diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2019-04-24 13:00:41 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2019-05-03 00:15:37 +0200 |
| commit | 7c57bdd82026ba03f3158bbcd841afde7c2dc43a (patch) | |
| tree | 4ddb7c7ccbe33e6158ee4a9c4ae2f0a67e227bf4 /slirp | |
| parent | 816956014e92d04d458900d2b8815b5bf3ac5a4d (diff) | |
build-sys: move slirp as git submodule project
The slirp project is now hosted on freedesktop at:
https://gitlab.freedesktop.org/slirp.
The libslirp source was extracted from qemu/slirp filtered through
clang-format (available in project tree). The qemu slirp directory can
be swapped by a git submodule.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20190424110041.8175-3-marcandre.lureau@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Diffstat (limited to 'slirp')
59 files changed, 0 insertions, 15722 deletions
diff --git a/slirp b/slirp new file mode 160000 +Subproject 59a1b1f165458c2acb7ff0525b543945f741622 diff --git a/slirp/COPYRIGHT b/slirp/COPYRIGHT deleted file mode 100644 index ed49512dbc..0000000000 --- a/slirp/COPYRIGHT +++ /dev/null @@ -1,62 +0,0 @@ -Slirp was written by Danny Gasparovski. -Copyright (c), 1995,1996 All Rights Reserved. - -Slirp is free software; "free" as in you don't have to pay for it, and you -are free to do whatever you want with it. I do not accept any donations, -monetary or otherwise, for Slirp. Instead, I would ask you to pass this -potential donation to your favorite charity. In fact, I encourage -*everyone* who finds Slirp useful to make a small donation to their -favorite charity (for example, GreenPeace). This is not a requirement, but -a suggestion from someone who highly values the service they provide. - -The copyright terms and conditions: - ----BEGIN--- - - Copyright (c) 1995,1996 Danny Gasparovski. All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - 1. Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - 2. Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - 3. Neither the name of the copyright holder nor the names of its - contributors may be used to endorse or promote products derived - from this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, - INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL - DANNY GASPAROVSKI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - ----END--- - -This basically means you can do anything you want with the software, except -1) call it your own, and 2) claim warranty on it. There is no warranty for -this software. None. Nada. If you lose a million dollars while using -Slirp, that's your loss not mine. So, ***USE AT YOUR OWN RISK!***. - -If these conditions cannot be met due to legal restrictions (E.g. where it -is against the law to give out Software without warranty), you must cease -using the software and delete all copies you have. - -Slirp uses code that is copyrighted by the following people/organizations: - -Juha Pirkola. -Gregory M. Christy. -The Regents of the University of California. -Carnegie Mellon University. -The Australian National University. -RSA Data Security, Inc. - -Please read the top of each source file for the details on the various -copyrights. diff --git a/slirp/Makefile b/slirp/Makefile deleted file mode 100644 index 6d48f626ba..0000000000 --- a/slirp/Makefile +++ /dev/null @@ -1,47 +0,0 @@ -ROOT_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST)))) -BUILD_DIR ?= . - -LIBSLIRP = $(BUILD_DIR)/libslirp.a - -all: $(LIBSLIRP) - -SRCS := $(wildcard src/*.c) -OBJS := $(SRCS:%.c=$(BUILD_DIR)/%.o) -DEPS := $(OBJS:%.o=%.d) - -INC_DIRS := $(BUILD_DIR)/src -INC_FLAGS := $(addprefix -I,$(INC_DIRS)) - -override CFLAGS += \ - -DG_LOG_DOMAIN='"Slirp"' \ - $(shell $(PKG_CONFIG) --cflags glib-2.0) \ - $(INC_FLAGS) \ - -MMD -MP -override LDFLAGS += $(shell $(PKG_CONFIG) --libs glib-2.0) - -$(LIBSLIRP): $(OBJS) - -.PHONY: clean - -clean: - rm -r $(OBJS) $(DEPS) $(LIBSLIRP) - -$(BUILD_DIR)/src/%.o: $(ROOT_DIR)/src/%.c - @$(MKDIR_P) $(dir $@) - $(call quiet-command,$(CC) $(CFLAGS) -c -o $@ $<,"CC","$@") - -%.a: - $(call quiet-command,rm -f $@ && $(AR) rcs $@ $^,"AR","$@") - -PKG_CONFIG ?= pkg-config -MKDIR_P ?= mkdir -p -quiet-command-run = $(if $(V),,$(if $2,printf " %-7s %s\n" $2 $3 && ))$1 -quiet-@ = $(if $(V),,@) -quiet-command = $(quiet-@)$(call quiet-command-run,$1,$2,$3) - -print-%: - @echo '$*=$($*)' - -.SUFFIXES: - --include $(DEPS) diff --git a/slirp/src/arp_table.c b/slirp/src/arp_table.c deleted file mode 100644 index 9d7a59eb2c..0000000000 --- a/slirp/src/arp_table.c +++ /dev/null @@ -1,92 +0,0 @@ -/* SPDX-License-Identifier: MIT */ -/* - * ARP table - * - * Copyright (c) 2011 AdaCore - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "slirp.h" - -#include <string.h> - -void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]) -{ - const uint32_t broadcast_addr = - ~slirp->vnetwork_mask.s_addr | slirp->vnetwork_addr.s_addr; - ArpTable *arptbl = &slirp->arp_table; - int i; - - DEBUG_CALL("arp_table_add"); - DEBUG_ARG("ip = %s", inet_ntoa((struct in_addr){.s_addr = ip_addr})); - DEBUG_ARG("hw addr = %02x:%02x:%02x:%02x:%02x:%02x", - ethaddr[0], ethaddr[1], ethaddr[2], - ethaddr[3], ethaddr[4], ethaddr[5]); - - if (ip_addr == 0 || ip_addr == 0xffffffff || ip_addr == broadcast_addr) { - /* Do not register broadcast addresses */ - return; - } - - /* Search for an entry */ - for (i = 0; i < ARP_TABLE_SIZE; i++) { - if (arptbl->table[i].ar_sip == ip_addr) { - /* Update the entry */ - memcpy(arptbl->table[i].ar_sha, ethaddr, ETH_ALEN); - return; - } - } - - /* No entry found, create a new one */ - arptbl->table[arptbl->next_victim].ar_sip = ip_addr; - memcpy(arptbl->table[arptbl->next_victim].ar_sha, ethaddr, ETH_ALEN); - arptbl->next_victim = (arptbl->next_victim + 1) % ARP_TABLE_SIZE; -} - -bool arp_table_search(Slirp *slirp, uint32_t ip_addr, - uint8_t out_ethaddr[ETH_ALEN]) -{ - const uint32_t broadcast_addr = - ~slirp->vnetwork_mask.s_addr | slirp->vnetwork_addr.s_addr; - ArpTable *arptbl = &slirp->arp_table; - int i; - - DEBUG_CALL("arp_table_search"); - DEBUG_ARG("ip = %s", inet_ntoa((struct in_addr){.s_addr = ip_addr})); - - /* If broadcast address */ - if (ip_addr == 0xffffffff || ip_addr == broadcast_addr) { - /* return Ethernet broadcast address */ - memset(out_ethaddr, 0xff, ETH_ALEN); - return 1; - } - - for (i = 0; i < ARP_TABLE_SIZE; i++) { - if (arptbl->table[i].ar_sip == ip_addr) { - memcpy(out_ethaddr, arptbl->table[i].ar_sha, ETH_ALEN); - DEBUG_ARG("found hw addr = %02x:%02x:%02x:%02x:%02x:%02x", - out_ethaddr[0], out_ethaddr[1], out_ethaddr[2], - out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]); - return 1; - } - } - - return 0; -} diff --git a/slirp/src/bootp.c b/slirp/src/bootp.c deleted file mode 100644 index b208e3b216..0000000000 --- a/slirp/src/bootp.c +++ /dev/null @@ -1,371 +0,0 @@ -/* SPDX-License-Identifier: MIT */ -/* - * QEMU BOOTP/DHCP server - * - * Copyright (c) 2004 Fabrice Bellard - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "slirp.h" - -#if defined(_WIN32) -/* Windows ntohl() returns an u_long value. - * Add a type cast to match the format strings. */ -# define ntohl(n) ((uint32_t)ntohl(n)) -#endif - -/* XXX: only DHCP is supported */ - -#define LEASE_TIME (24 * 3600) - -static const uint8_t rfc1533_cookie[] = { RFC1533_COOKIE }; - -#define DPRINTF(fmt, ...) DEBUG_CALL(fmt, ##__VA_ARGS__) - -static BOOTPClient *get_new_addr(Slirp *slirp, struct in_addr *paddr, - const uint8_t *macaddr) -{ - BOOTPClient *bc; - int i; - - for(i = 0; i < NB_BOOTP_CLIENTS; i++) { - bc = &slirp->bootp_clients[i]; - if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6)) - goto found; - } - return NULL; - found: - bc = &slirp->bootp_clients[i]; - bc->allocated = 1; - paddr->s_addr = slirp->vdhcp_startaddr.s_addr + htonl(i); - return bc; -} - -static BOOTPClient *request_addr(Slirp *slirp, const struct in_addr *paddr, - const uint8_t *macaddr) -{ - uint32_t req_addr = ntohl(paddr->s_addr); - uint32_t dhcp_addr = ntohl(slirp->vdhcp_startaddr.s_addr); - BOOTPClient *bc; - - if (req_addr >= dhcp_addr && - req_addr < (dhcp_addr + NB_BOOTP_CLIENTS)) { - bc = &slirp->bootp_clients[req_addr - dhcp_addr]; - if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6)) { - bc->allocated = 1; - return bc; - } - } - return NULL; -} - -static BOOTPClient *find_addr(Slirp *slirp, struct in_addr *paddr, - const uint8_t *macaddr) -{ - BOOTPClient *bc; - int i; - - for(i = 0; i < NB_BOOTP_CLIENTS; i++) { - if (!memcmp(macaddr, slirp->bootp_clients[i].macaddr, 6)) - goto found; - } - return NULL; - found: - bc = &slirp->bootp_clients[i]; - bc->allocated = 1; - paddr->s_addr = slirp->vdhcp_startaddr.s_addr + htonl(i); - return bc; -} - -static void dhcp_decode(const struct bootp_t *bp, int *pmsg_type, - struct in_addr *preq_addr) -{ - const uint8_t *p, *p_end; - int len, tag; - - *pmsg_type = 0; - preq_addr->s_addr = htonl(0L); - - p = bp->bp_vend; - p_end = p + DHCP_OPT_LEN; - if (memcmp(p, rfc1533_cookie, 4) != 0) - return; - p += 4; - while (p < p_end) { - tag = p[0]; - if (tag == RFC1533_PAD) { - p++; - } else if (tag == RFC1533_END) { - break; - } else { - p++; - if (p >= p_end) - break; - len = *p++; - if (p + len > p_end) { - break; - } - DPRINTF("dhcp: tag=%d len=%d\n", tag, len); - - switch(tag) { - case RFC2132_MSG_TYPE: - if (len >= 1) - *pmsg_type = p[0]; - break; - case RFC2132_REQ_ADDR: - if (len >= 4) { - memcpy(&(preq_addr->s_addr), p, 4); - } - break; - default: - break; - } - p += len; - } - } - if (*pmsg_type == DHCPREQUEST && preq_addr->s_addr == htonl(0L) && - bp->bp_ciaddr.s_addr) { - memcpy(&(preq_addr->s_addr), &bp->bp_ciaddr, 4); - } -} - -static void bootp_reply(Slirp *slirp, const struct bootp_t *bp) -{ - BOOTPClient *bc = NULL; - struct mbuf *m; - struct bootp_t *rbp; - struct sockaddr_in saddr, daddr; - struct in_addr preq_addr; - int dhcp_msg_type, val; - uint8_t *q; - uint8_t *end; - uint8_t client_ethaddr[ETH_ALEN]; - - /* extract exact DHCP msg type */ - dhcp_decode(bp, &dhcp_msg_type, &preq_addr); - DPRINTF("bootp packet op=%d msgtype=%d", bp->bp_op, dhcp_msg_type); - if (preq_addr.s_addr != htonl(0L)) - DPRINTF(" req_addr=%08" PRIx32 "\n", ntohl(preq_addr.s_addr)); - else { - DPRINTF("\n"); - } - - if (dhcp_msg_type == 0) - dhcp_msg_type = DHCPREQUEST; /* Force reply for old BOOTP clients */ - - if (dhcp_msg_type != DHCPDISCOVER && - dhcp_msg_type != DHCPREQUEST) - return; - - /* Get client's hardware address from bootp request */ - memcpy(client_ethaddr, bp->bp_hwaddr, ETH_ALEN); - - m = m_get(slirp); - if (!m) { - return; - } - m->m_data += IF_MAXLINKHDR; - rbp = (struct bootp_t *)m->m_data; - m->m_data += sizeof(struct udpiphdr); - memset(rbp, 0, sizeof(struct bootp_t)); - - if (dhcp_msg_type == DHCPDISCOVER) { - if (preq_addr.s_addr != htonl(0L)) { - bc = request_addr(slirp, &preq_addr, client_ethaddr); - if (bc) { - daddr.sin_addr = preq_addr; - } - } - if (!bc) { - new_addr: - bc = get_new_addr(slirp, &daddr.sin_addr, client_ethaddr); - if (!bc) { - DPRINTF("no address left\n"); - return; - } - } - memcpy(bc->macaddr, client_ethaddr, ETH_ALEN); - } else if (preq_addr.s_addr != htonl(0L)) { - bc = request_addr(slirp, &preq_addr, client_ethaddr); - if (bc) { - daddr.sin_addr = preq_addr; - memcpy(bc->macaddr, client_ethaddr, ETH_ALEN); - } else { - /* DHCPNAKs should be sent to broadcast */ - daddr.sin_addr.s_addr = 0xffffffff; - } - } else { - bc = find_addr(slirp, &daddr.sin_addr, bp->bp_hwaddr); - if (!bc) { - /* if never assigned, behaves as if it was already - assigned (windows fix because it remembers its address) */ - goto new_addr; - } - } - - /* Update ARP table for this IP address */ - arp_table_add(slirp, daddr.sin_addr.s_addr, client_ethaddr); - - saddr.sin_addr = slirp->vhost_addr; - saddr.sin_port = htons(BOOTP_SERVER); - - daddr.sin_port = htons(BOOTP_CLIENT); - - rbp->bp_op = BOOTP_REPLY; - rbp->bp_xid = bp->bp_xid; - rbp->bp_htype = 1; - rbp->bp_hlen = 6; - memcpy(rbp->bp_hwaddr, bp->bp_hwaddr, ETH_ALEN); - - rbp->bp_yiaddr = daddr.sin_addr; /* Client IP address */ - rbp->bp_siaddr = saddr.sin_addr; /* Server IP address */ - - q = rbp->bp_vend; - end = (uint8_t *)&rbp[1]; - memcpy(q, rfc1533_cookie, 4); - q += 4; - - if (bc) { - DPRINTF("%s addr=%08" PRIx32 "\n", - (dhcp_msg_type == DHCPDISCOVER) ? "offered" : "ack'ed", - ntohl(daddr.sin_addr.s_addr)); - - if (dhcp_msg_type == DHCPDISCOVER) { - *q++ = RFC2132_MSG_TYPE; - *q++ = 1; - *q++ = DHCPOFFER; - } else /* DHCPREQUEST */ { - *q++ = RFC2132_MSG_TYPE; - *q++ = 1; - *q++ = DHCPACK; - } - - if (slirp->bootp_filename) - snprintf((char *)rbp->bp_file, sizeof(rbp->bp_file), "%s", - slirp->bootp_filename); - - *q++ = RFC2132_SRV_ID; - *q++ = 4; - memcpy(q, &saddr.sin_addr, 4); - q += 4; - - *q++ = RFC1533_NETMASK; - *q++ = 4; - memcpy(q, &slirp->vnetwork_mask, 4); - q += 4; - - if (!slirp->restricted) { - *q++ = RFC1533_GATEWAY; - *q++ = 4; - memcpy(q, &saddr.sin_addr, 4); - q += 4; - - *q++ = RFC1533_DNS; - *q++ = 4; - memcpy(q, &slirp->vnameserver_addr, 4); - q += 4; - } - - *q++ = RFC2132_LEASE_TIME; - *q++ = 4; - val = htonl(LEASE_TIME); - memcpy(q, &val, 4); - q += 4; - - if (*slirp->client_hostname) { - val = strlen(slirp->client_hostname); - if (q + val + 2 >= end) { - g_warning("DHCP packet size exceeded, " - "omitting host name option."); - } else { - *q++ = RFC1533_HOSTNAME; - *q++ = val; - memcpy(q, slirp->client_hostname, val); - q += val; - } - } - - if (slirp->vdomainname) { - val = strlen(slirp->vdomainname); - if (q + val + 2 >= end) { - g_warning("DHCP packet size exceeded, " - "omitting domain name option."); - } else { - *q++ = RFC1533_DOMAINNAME; - *q++ = val; - memcpy(q, slirp->vdomainname, val); - q += val; - } - } - - if (slirp->tftp_server_name) { - val = strlen(slirp->tftp_server_name); - if (q + val + 2 >= end) { - g_warning("DHCP packet size exceeded, " - "omitting tftp-server-name option."); - } else { - *q++ = RFC2132_TFTP_SERVER_NAME; - *q++ = val; - memcpy(q, slirp->tftp_server_name, val); - q += val; - } - } - - if (slirp->vdnssearch) { - val = slirp->vdnssearch_len; - if (q + val >= end) { - g_warning("DHCP packet size exceeded, " - "omitting domain-search option."); - } else { - memcpy(q, slirp->vdnssearch, val); - q += val; - } - } - } else { - static const char nak_msg[] = "requested address not available"; - - DPRINTF("nak'ed addr=%08" PRIx32 "\n", ntohl(preq_addr.s_addr)); - - *q++ = RFC2132_MSG_TYPE; - *q++ = 1; - *q++ = DHCPNAK; - - *q++ = RFC2132_MESSAGE; - *q++ = sizeof(nak_msg) - 1; - memcpy(q, nak_msg, sizeof(nak_msg) - 1); - q += sizeof(nak_msg) - 1; - } - assert(q < end); - *q = RFC1533_END; - - daddr.sin_addr.s_addr = 0xffffffffu; - - m->m_len = sizeof(struct bootp_t) - - sizeof(struct ip) - sizeof(struct udphdr); - udp_output(NULL, m, &saddr, &daddr, IPTOS_LOWDELAY); -} - -void bootp_input(struct mbuf *m) -{ - struct bootp_t *bp = mtod(m, struct bootp_t *); - - if (bp->bp_op == BOOTP_REQUEST) { - bootp_reply(m->slirp, bp); - } -} diff --git a/slirp/src/bootp.h b/slirp/src/bootp.h deleted file mode 100644 index d881ad620a..0000000000 --- a/slirp/src/bootp.h +++ /dev/null @@ -1,129 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* bootp/dhcp defines */ - -#ifndef SLIRP_BOOTP_H -#define SLIRP_BOOTP_H - -#define BOOTP_SERVER 67 -#define BOOTP_CLIENT 68 - -#define BOOTP_REQUEST 1 -#define BOOTP_REPLY 2 - -#define RFC1533_COOKIE 99, 130, 83, 99 -#define RFC1533_PAD 0 -#define RFC1533_NETMASK 1 -#define RFC1533_TIMEOFFSET 2 -#define RFC1533_GATEWAY 3 -#define RFC1533_TIMESERVER 4 -#define RFC1533_IEN116NS 5 -#define RFC1533_DNS 6 -#define RFC1533_LOGSERVER 7 -#define RFC1533_COOKIESERVER 8 -#define RFC1533_LPRSERVER 9 -#define RFC1533_IMPRESSSERVER 10 -#define RFC1533_RESOURCESERVER 11 -#define RFC1533_HOSTNAME 12 -#define RFC1533_BOOTFILESIZE 13 -#define RFC1533_MERITDUMPFILE 14 -#define RFC1533_DOMAINNAME 15 -#define RFC1533_SWAPSERVER 16 -#define RFC1533_ROOTPATH 17 -#define RFC1533_EXTENSIONPATH 18 -#define RFC1533_IPFORWARDING 19 -#define RFC1533_IPSOURCEROUTING 20 -#define RFC1533_IPPOLICYFILTER 21 -#define RFC1533_IPMAXREASSEMBLY 22 -#define RFC1533_IPTTL 23 -#define RFC1533_IPMTU 24 -#define RFC1533_IPMTUPLATEAU 25 -#define RFC1533_INTMTU 26 -#define RFC1533_INTLOCALSUBNETS 27 -#define RFC1533_INTBROADCAST 28 -#define RFC1533_INTICMPDISCOVER 29 -#define RFC1533_INTICMPRESPOND 30 -#define RFC1533_INTROUTEDISCOVER 31 -#define RFC1533_INTROUTESOLICIT 32 -#define RFC1533_INTSTATICROUTES 33 -#define RFC1533_LLTRAILERENCAP 34 -#define RFC1533_LLARPCACHETMO 35 -#define RFC1533_LLETHERNETENCAP 36 -#define RFC1533_TCPTTL 37 -#define RFC1533_TCPKEEPALIVETMO 38 -#define RFC1533_TCPKEEPALIVEGB 39 -#define RFC1533_NISDOMAIN 40 -#define RFC1533_NISSERVER 41 -#define RFC1533_NTPSERVER 42 -#define RFC1533_VENDOR 43 -#define RFC1533_NBNS 44 -#define RFC1533_NBDD 45 -#define RFC1533_NBNT 46 -#define RFC1533_NBSCOPE 47 -#define RFC1533_XFS 48 -#define RFC1533_XDM 49 - -#define RFC2132_REQ_ADDR 50 -#define RFC2132_LEASE_TIME 51 -#define RFC2132_MSG_TYPE 53 -#define RFC2132_SRV_ID 54 -#define RFC2132_PARAM_LIST 55 -#define RFC2132_MESSAGE 56 -#define RFC2132_MAX_SIZE 57 -#define RFC2132_RENEWAL_TIME 58 -#define RFC2132_REBIND_TIME 59 -#define RFC2132_TFTP_SERVER_NAME 66 - -#define DHCPDISCOVER 1 -#define DHCPOFFER 2 -#define DHCPREQUEST 3 -#define DHCPACK 5 -#define DHCPNAK 6 - -#define RFC1533_VENDOR_MAJOR 0 -#define RFC1533_VENDOR_MINOR 0 - -#define RFC1533_VENDOR_MAGIC 128 -#define RFC1533_VENDOR_ADDPARM 129 -#define RFC1533_VENDOR_ETHDEV 130 -#define RFC1533_VENDOR_HOWTO 132 -#define RFC1533_VENDOR_MNUOPTS 160 -#define RFC1533_VENDOR_SELECTION 176 -#define RFC1533_VENDOR_MOTD 184 -#define RFC1533_VENDOR_NUMOFMOTD 8 -#define RFC1533_VENDOR_IMG 192 -#define RFC1533_VENDOR_NUMOFIMG 16 - -#define RFC1533_END 255 -#define BOOTP_VENDOR_LEN 64 -#define DHCP_OPT_LEN 312 - -struct bootp_t { - struct ip ip; - struct udphdr udp; - uint8_t bp_op; - uint8_t bp_htype; - uint8_t bp_hlen; - uint8_t bp_hops; - uint32_t bp_xid; - uint16_t bp_secs; - uint16_t unused; - struct in_addr bp_ciaddr; - struct in_addr bp_yiaddr; - struct in_addr bp_siaddr; - struct in_addr bp_giaddr; - uint8_t bp_hwaddr[16]; - uint8_t bp_sname[64]; - uint8_t bp_file[128]; - uint8_t bp_vend[DHCP_OPT_LEN]; -}; - -typedef struct { - uint16_t allocated; - uint8_t macaddr[6]; -} BOOTPClient; - -#define NB_BOOTP_CLIENTS 16 - -void bootp_input(struct mbuf *m); - -#endif diff --git a/slirp/src/cksum.c b/slirp/src/cksum.c deleted file mode 100644 index 9599f6a280..0000000000 --- a/slirp/src/cksum.c +++ /dev/null @@ -1,161 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1988, 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)in_cksum.c 8.1 (Berkeley) 6/10/93 - * in_cksum.c,v 1.2 1994/08/02 07:48:16 davidg Exp - */ - -#include "slirp.h" - -/* - * Checksum routine for Internet Protocol family headers (Portable Version). - * - * This routine is very heavily used in the network - * code and should be modified for each CPU to be as fast as possible. - * - * XXX Since we will never span more than 1 mbuf, we can optimise this - */ - -#define ADDCARRY(x) (x > 65535 ? x -= 65535 : x) -#define REDUCE {l_util.l = sum; sum = l_util.s[0] + l_util.s[1]; \ - (void)ADDCARRY(sum);} - -int cksum(struct mbuf *m, int len) -{ - register uint16_t *w; - register int sum = 0; - register int mlen = 0; - int byte_swapped = 0; - - union { - uint8_t c[2]; - uint16_t s; - } s_util; - union { - uint16_t s[2]; - uint32_t l; - } l_util; - - if (m->m_len == 0) - goto cont; - w = mtod(m, uint16_t *); - - mlen = m->m_len; - - if (len < mlen) - mlen = len; - len -= mlen; - /* - * Force to even boundary. - */ - if ((1 & (uintptr_t)w) && (mlen > 0)) { - REDUCE; - sum <<= 8; - s_util.c[0] = *(uint8_t *)w; - w = (uint16_t *)((int8_t *)w + 1); - mlen--; - byte_swapped = 1; - } - /* - * Unroll the loop to make overhead from - * branches &c small. - */ - while ((mlen -= 32) >= 0) { - sum += w[0]; sum += w[1]; sum += w[2]; sum += w[3]; - sum += w[4]; sum += w[5]; sum += w[6]; sum += w[7]; - sum += w[8]; sum += w[9]; sum += w[10]; sum += w[11]; - sum += w[12]; sum += w[13]; sum += w[14]; sum += w[15]; - w += 16; - } - mlen += 32; - while ((mlen -= 8) >= 0) { - sum += w[0]; sum += w[1]; sum += w[2]; sum += w[3]; - w += 4; - } - mlen += 8; - if (mlen == 0 && byte_swapped == 0) - goto cont; - REDUCE; - while ((mlen -= 2) >= 0) { - sum += *w++; - } - - if (byte_swapped) { - REDUCE; - sum <<= 8; - if (mlen == -1) { - s_util.c[1] = *(uint8_t *)w; - sum += s_util.s; - mlen = 0; - } else - - mlen = -1; - } else if (mlen == -1) - s_util.c[0] = *(uint8_t *)w; - -cont: - if (len) { - DEBUG_ERROR("cksum: out of data"); - DEBUG_ERROR(" len = %d", len); - } - if (mlen == -1) { - /* The last mbuf has odd # of bytes. Follow the - standard (the odd byte may be shifted left by 8 bits - or not as determined by endian-ness of the machine) */ - s_util.c[1] = 0; - sum += s_util.s; - } - REDUCE; - return (~sum & 0xffff); -} - -int ip6_cksum(struct mbuf *m) -{ - /* TODO: Optimize this by being able to pass the ip6_pseudohdr to cksum - * separately from the mbuf */ - struct ip6 save_ip, *ip = mtod(m, struct ip6 *); - struct ip6_pseudohdr *ih = mtod(m, struct ip6_pseudohdr *); - int sum; - - save_ip = *ip; - - ih->ih_src = save_ip.ip_src; - ih->ih_dst = save_ip.ip_dst; - ih->ih_pl = htonl((uint32_t)ntohs(save_ip.ip_pl)); - ih->ih_zero_hi = 0; - ih->ih_zero_lo = 0; - ih->ih_nh = save_ip.ip_nh; - - sum = cksum(m, ((int)sizeof(struct ip6_pseudohdr)) - + ntohl(ih->ih_pl)); - - *ip = save_ip; - - return sum; -} diff --git a/slirp/src/debug.h b/slirp/src/debug.h deleted file mode 100644 index c95fd8ffd2..0000000000 --- a/slirp/src/debug.h +++ /dev/null @@ -1,46 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1995 Danny Gasparovski. - */ - -#ifndef DEBUG_H_ -#define DEBUG_H_ - -#define DBG_CALL (1 << 0) -#define DBG_MISC (1 << 1) -#define DBG_ERROR (1 << 2) -#define DBG_TFTP (1 << 3) - -extern int slirp_debug; - -#define DEBUG_CALL(fmt, ...) do { \ - if (G_UNLIKELY(slirp_debug & DBG_CALL)) { \ - g_debug(fmt "...", ##__VA_ARGS__); \ - } \ -} while (0) - -#define DEBUG_ARG(fmt, ...) do { \ - if (G_UNLIKELY(slirp_debug & DBG_CALL)) { \ - g_debug(" " fmt, ##__VA_ARGS__); \ - } \ -} while (0) - -#define DEBUG_MISC(fmt, ...) do { \ - if (G_UNLIKELY(slirp_debug & DBG_MISC)) { \ - g_debug(fmt, ##__VA_ARGS__); \ - } \ -} while (0) - -#define DEBUG_ERROR(fmt, ...) do { \ - if (G_UNLIKELY(slirp_debug & DBG_ERROR)) { \ - g_debug(fmt, ##__VA_ARGS__); \ - } \ -} while (0) - -#define DEBUG_TFTP(fmt, ...) do { \ - if (G_UNLIKELY(slirp_debug & DBG_TFTP)) { \ - g_debug(fmt, ##__VA_ARGS__); \ - } \ -} while (0) - -#endif /* DEBUG_H_ */ diff --git a/slirp/src/dhcpv6.c b/slirp/src/dhcpv6.c deleted file mode 100644 index 3c8f420912..0000000000 --- a/slirp/src/dhcpv6.c +++ /dev/null @@ -1,224 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * SLIRP stateless DHCPv6 - * - * We only support stateless DHCPv6, e.g. for network booting. - * See RFC 3315, RFC 3736, RFC 3646 and RFC 5970 for details. - * - * Copyright 2016 Thomas Huth, Red Hat Inc. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * 2. Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * - * 3. Neither the name of the copyright holder nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "slirp.h" -#include "dhcpv6.h" - -/* DHCPv6 message types */ -#define MSGTYPE_REPLY 7 -#define MSGTYPE_INFO_REQUEST 11 - -/* DHCPv6 option types */ -#define OPTION_CLIENTID 1 -#define OPTION_IAADDR 5 -#define OPTION_ORO 6 -#define OPTION_DNS_SERVERS 23 -#define OPTION_BOOTFILE_URL 59 - -struct requested_infos { - uint8_t *client_id; - int client_id_len; - bool want_dns; - bool want_boot_url; -}; - -/** - * Analyze the info request message sent by the client to see what data it - * provided and what it wants to have. The information is gathered in the - * "requested_infos" struct. Note that client_id (if provided) points into - * the odata region, thus the caller must keep odata valid as long as it - * needs to access the requested_infos struct. - */ -static int dhcpv6_parse_info_request(Slirp *slirp, uint8_t *odata, int olen, - struct requested_infos *ri) -{ - int i, req_opt; - - while (olen > 4) { - /* Parse one option */ - int option = odata[0] << 8 | odata[1]; - int len = odata[2] << 8 | odata[3]; - - if (len + 4 > olen) { - slirp->cb->guest_error("Guest sent bad DHCPv6 packet!", slirp->opaque); - return -E2BIG; - } - - switch (option) { - case OPTION_IAADDR: - /* According to RFC3315, we must discard requests with IA option */ - return -EINVAL; - case OPTION_CLIENTID: - if (len > 256) { - /* Avoid very long IDs which could cause problems later */ - return -E2BIG; - } - ri->client_id = odata + 4; - ri->client_id_len = len; - break; - case OPTION_ORO: /* Option request option */ - if (len & 1) { - return -EINVAL; - } - /* Check which options the client wants to have */ - for (i = 0; i < len; i += 2) { - req_opt = odata[4 + i] << 8 | odata[4 + i + 1]; - switch (req_opt) { - case OPTION_DNS_SERVERS: - ri->want_dns = true; - break; - case OPTION_BOOTFILE_URL: - ri->want_boot_url = true; - break; - default: - DEBUG_MISC("dhcpv6: Unsupported option request %d", - req_opt); - } - } - break; - default: - DEBUG_MISC("dhcpv6 info req: Unsupported option %d, len=%d", - option, len); - } - - odata += len + 4; - olen -= len + 4; - } - - return 0; -} - - -/** - * Handle information request messages - */ -static void dhcpv6_info_request(Slirp *slirp, struct sockaddr_in6 *srcsas, - uint32_t xid, uint8_t *odata, int olen) -{ - struct requested_infos ri = { NULL }; - struct sockaddr_in6 sa6, da6; - struct mbuf *m; - uint8_t *resp; - - if (dhcpv6_parse_info_request(slirp, odata, olen, &ri) < 0) { - return; - } - - m = m_get(slirp); - if (!m) { - return; - } - memset(m->m_data, 0, m->m_size); - m->m_data += IF_MAXLINKHDR; - resp = (uint8_t *)m->m_data + sizeof(struct ip6) + sizeof(struct udphdr); - - /* Fill in response */ - *resp++ = MSGTYPE_REPLY; - *resp++ = (uint8_t)(xid >> 16); - *resp++ = (uint8_t)(xid >> 8); - *resp++ = (uint8_t)xid; - - if (ri.client_id) { - *resp++ = OPTION_CLIENTID >> 8; /* option-code high byte */ - *resp++ = OPTION_CLIENTID; /* option-code low byte */ - *resp++ = ri.client_id_len >> 8; /* option-len high byte */ - *resp++ = ri.client_id_len; /* option-len low byte */ - memcpy(resp, ri.client_id, ri.client_id_len); - resp += ri.client_id_len; - } - if (ri.want_dns) { - *resp++ = OPTION_DNS_SERVERS >> 8; /* option-code high byte */ - *resp++ = OPTION_DNS_SERVERS; /* option-code low byte */ - *resp++ = 0; /* option-len high byte */ - *resp++ = 16; /* option-len low byte */ - memcpy(resp, &slirp->vnameserver_addr6, 16); - resp += 16; - } - if (ri.want_boot_url) { - uint8_t *sa = slirp->vhost_addr6.s6_addr; - int slen, smaxlen; - - *resp++ = OPTION_BOOTFILE_URL >> 8; /* option-code high byte */ - *resp++ = OPTION_BOOTFILE_URL; /* option-code low byte */ - smaxlen = (uint8_t *)m->m_data + IF_MTU - (resp + 2); - slen = snprintf((char *)resp + 2, smaxlen, - "tftp://[%02x%02x:%02x%02x:%02x%02x:%02x%02x:" - "%02x%02x:%02x%02x:%02x%02x:%02x%02x]/%s", - sa[0], sa[1], sa[2], sa[3], sa[4], sa[5], sa[6], sa[7], - sa[8], sa[9], sa[10], sa[11], sa[12], sa[13], sa[14], - sa[15], slirp->bootp_filename); - slen = MIN(slen, smaxlen); - *resp++ = slen >> 8; /* option-len high byte */ - *resp++ = slen; /* option-len low byte */ - resp += slen; - } - - sa6.sin6_addr = slirp->vhost_addr6; - sa6.sin6_port = DHCPV6_SERVER_PORT; - da6.sin6_addr = srcsas->sin6_addr; - da6.sin6_port = srcsas->sin6_port; - m->m_data += sizeof(struct ip6) + sizeof(struct udphdr); - m->m_len = resp - (uint8_t *)m->m_data; - udp6_output(NULL, m, &sa6, &da6); -} - -/** - * Handle DHCPv6 messages sent by the client - */ -void dhcpv6_input(struct sockaddr_in6 *srcsas, struct mbuf *m) -{ - uint8_t *data = (uint8_t *)m->m_data + sizeof(struct udphdr); - int data_len = m->m_len - sizeof(struct udphdr); - uint32_t xid; - - if (data_len < 4) { - return; - } - - xid = ntohl(*(uint32_t *)data) & 0xffffff; - - switch (data[0]) { - case MSGTYPE_INFO_REQUEST: - dhcpv6_info_request(m->slirp, srcsas, xid, &data[4], data_len - 4); - break; - default: - DEBUG_MISC("dhcpv6_input: Unsupported message type 0x%x", data[0]); - } -} diff --git a/slirp/src/dhcpv6.h b/slirp/src/dhcpv6.h deleted file mode 100644 index dc26a93cff..0000000000 --- a/slirp/src/dhcpv6.h +++ /dev/null @@ -1,53 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Definitions and prototypes for SLIRP stateless DHCPv6 - * - * Copyright 2016 Thomas Huth, Red Hat Inc. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * 2. Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * - * 3. Neither the name of the copyright holder nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#ifndef SLIRP_DHCPV6_H -#define SLIRP_DHCPV6_H - -#define DHCPV6_SERVER_PORT 547 - -#define ALLDHCP_MULTICAST { .s6_addr = \ - { 0xff, 0x02, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x01, 0x00, 0x02 } } - -#define in6_dhcp_multicast(a)\ - in6_equal(a, &(struct in6_addr)ALLDHCP_MULTICAST) - -void dhcpv6_input(struct sockaddr_in6 *srcsas, struct mbuf *m); - -#endif diff --git a/slirp/src/dnssearch.c b/slirp/src/dnssearch.c deleted file mode 100644 index 12c488971e..0000000000 --- a/slirp/src/dnssearch.c +++ /dev/null @@ -1,311 +0,0 @@ -/* SPDX-License-Identifier: MIT */ -/* - * Domain search option for DHCP (RFC 3397) - * - * Copyright (c) 2012 Klaus Stengel - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "slirp.h" - -static const uint8_t RFC3397_OPT_DOMAIN_SEARCH = 119; -static const uint8_t MAX_OPT_LEN = 255; -static const uint8_t OPT_HEADER_LEN = 2; -static const uint8_t REFERENCE_LEN = 2; - -struct compact_domain; - -typedef struct compact_domain { - struct compact_domain *self; - struct compact_domain *refdom; - uint8_t *labels; - size_t len; - size_t common_octets; -} CompactDomain; - -static size_t -domain_suffix_diffoff(const CompactDomain *a, const CompactDomain *b) -{ - size_t la = a->len, lb = b->len; - uint8_t *da = a->labels + la, *db = b->labels + lb; - size_t i, lm = (la < lb) ? la : lb; - - for (i = 0; i < lm; i++) { - da--; db--; - if (*da != *db) { - break; - } - } - return i; -} - -static int domain_suffix_ord(const void *cva, const void *cvb) -{ - const CompactDomain *a = cva, *b = cvb; - size_t la = a->len, lb = b->len; - size_t doff = domain_suffix_diffoff(a, b); - uint8_t ca = a->labels[la - doff]; - uint8_t cb = b->labels[lb - doff]; - - if (ca < cb) { - return -1; - } - if (ca > cb) { - return 1; - } - if (la < lb) { - return -1; - } - if (la > lb) { - return 1; - } - return 0; -} - -static size_t domain_common_label(CompactDomain *a, CompactDomain *b) -{ - size_t res, doff = domain_suffix_diffoff(a, b); - uint8_t *first_eq_pos = a->labels + (a->len - doff); - uint8_t *label = a->labels; - - while (*label && label < first_eq_pos) { - label += *label + 1; - } - res = a->len - (label - a->labels); - /* only report if it can help to reduce the packet size */ - return (res > REFERENCE_LEN) ? res : 0; -} - -static void domain_fixup_order(CompactDomain *cd, size_t n) -{ - size_t i; - - for (i = 0; i < n; i++) { - CompactDomain *cur = cd + i, *next = cd[i].self; - - while (!cur->common_octets) { - CompactDomain *tmp = next->self; /* backup target value */ - - next->self = cur; - cur->common_octets++; - - cur = next; - next = tmp; - } - } -} - -static void domain_mklabels(CompactDomain *cd, const char *input) -{ - uint8_t *len_marker = cd->labels; - uint8_t *output = len_marker; /* pre-incremented */ - const char *in = input; - char cur_chr; - size_t len = 0; - - if (cd->len == 0) { - goto fail; - } - cd->len++; - - do { - cur_chr = *in++; - if (cur_chr == '.' || cur_chr == '\0') { - len = output - len_marker; - if ((len == 0 && cur_chr == '.') || len >= 64) { - goto fail; - } - *len_marker = len; - - output++; - len_marker = output; - } else { - output++; - *output = cur_chr; - } - } while (cur_chr != '\0'); - - /* ensure proper zero-termination */ - if (len != 0) { - *len_marker = 0; - cd->len++; - } - return; - -fail: - g_warning("failed to parse domain name '%s'\n", input); - cd->len = 0; -} - -static void -domain_mkxrefs(CompactDomain *doms, CompactDomain *last, size_t depth) -{ - CompactDomain *i = doms, *target = doms; - - do { - if (i->labels < target->labels) { - target = i; - } - } while (i++ != last); - - for (i = doms; i != last; i++) { - CompactDomain *group_last; - size_t next_depth; - - if (i->common_octets == depth) { - continue; - } - - next_depth = -1; - for (group_last = i; group_last != last; group_last++) { - size_t co = group_last->common_octets; - if (co <= depth) { - break; - } - if (co < next_depth) { - next_depth = co; - } - } - domain_mkxrefs(i, group_last, next_depth); - - i = group_last; - if (i == last) { - break; - } - } - - if (depth == 0) { - return; - } - - i = doms; - do { - if (i != target && i->refdom == NULL) { - i->refdom = target; - i->common_octets = depth; - } - } while (i++ != last); -} - -static size_t domain_compactify(CompactDomain *domains, size_t n) -{ - uint8_t *start = domains->self->labels, *outptr = start; - size_t i; - - for (i = 0; i < n; i++) { - CompactDomain *cd = domains[i].self; - CompactDomain *rd = cd->refdom; - - if (rd != NULL) { - size_t moff = (rd->labels - start) - + (rd->len - cd->common_octets); - if (moff < 0x3FFFu) { - cd->len -= cd->common_octets - 2; - cd->labels[cd->len - 1] = moff & 0xFFu; - cd->labels[cd->len - 2] = 0xC0u | (moff >> 8); - } - } - - if (cd->labels != outptr) { - memmove(outptr, cd->labels, cd->len); - cd->labels = outptr; - } - outptr += cd->len; - } - return outptr - start; -} - -int translate_dnssearch(Slirp *s, const char **names) -{ - size_t blocks, bsrc_start, bsrc_end, bdst_start; - size_t i, num_domains, memreq = 0; - uint8_t *result = NULL, *outptr; - CompactDomain *domains = NULL; - const char **nameptr = names; - - while (*nameptr != NULL) { - nameptr++; - } - - num_domains = nameptr - names; - if (num_domains == 0) { - return -2; - } - - domains = g_malloc(num_domains * sizeof(*domains)); - - for (i = 0; i < num_domains; i++) { - size_t nlen = strlen(names[i]); - memreq += nlen + 2; /* 1 zero octet + 1 label length octet */ - domains[i].self = domains + i; - domains[i].len = nlen; - domains[i].common_octets = 0; - domains[i].refdom = NULL; - } - - /* reserve extra 2 header bytes for each 255 bytes of output */ - memreq += DIV_ROUND_UP(memreq, MAX_OPT_LEN) * OPT_HEADER_LEN; - result = g_malloc(memreq * sizeof(*result)); - - outptr = result; - for (i = 0; i < num_domains; i++) { - domains[i].labels = outptr; - domain_mklabels(domains + i, names[i]); - outptr += domains[i].len; - } - - if (outptr == result) { - g_free(domains); - g_free(result); - return -1; - } - - qsort(domains, num_domains, sizeof(*domains), domain_suffix_ord); - domain_fixup_order(domains, num_domains); - - for (i = 1; i < num_domains; i++) { - size_t cl = domain_common_label(domains + i - 1, domains + i); - domains[i - 1].common_octets = cl; - } - - domain_mkxrefs(domains, domains + num_domains - 1, 0); - memreq = domain_compactify(domains, num_domains); - - blocks = DIV_ROUND_UP(memreq, MAX_OPT_LEN); - bsrc_end = memreq; - bsrc_start = (blocks - 1) * MAX_OPT_LEN; - bdst_start = bsrc_start + blocks * OPT_HEADER_LEN; - memreq += blocks * OPT_HEADER_LEN; - - while (blocks--) { - size_t len = bsrc_end - bsrc_start; - memmove(result + bdst_start, result + bsrc_start, len); - result[bdst_start - 2] = RFC3397_OPT_DOMAIN_SEARCH; - result[bdst_start - 1] = len; - bsrc_end = bsrc_start; - bsrc_start -= MAX_OPT_LEN; - bdst_start -= MAX_OPT_LEN + OPT_HEADER_LEN; - } - - g_free(domains); - s->vdnssearch = result; - s->vdnssearch_len = memreq; - return 0; -} diff --git a/slirp/src/if.c b/slirp/src/if.c deleted file mode 100644 index 6eaac7292a..0000000000 --- a/slirp/src/if.c +++ /dev/null @@ -1,218 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1995 Danny Gasparovski. - */ - -#include "slirp.h" - -static void -ifs_insque(struct mbuf *ifm, struct mbuf *ifmhead) -{ - ifm->ifs_next = ifmhead->ifs_next; - ifmhead->ifs_next = ifm; - ifm->ifs_prev = ifmhead; - ifm->ifs_next->ifs_prev = ifm; -} - -static void -ifs_remque(struct mbuf *ifm) -{ - ifm->ifs_prev->ifs_next = ifm->ifs_next; - ifm->ifs_next->ifs_prev = ifm->ifs_prev; -} - -void -if_init(Slirp *slirp) -{ - slirp->if_fastq.qh_link = slirp->if_fastq.qh_rlink = &slirp->if_fastq; - slirp->if_batchq.qh_link = slirp->if_batchq.qh_rlink = &slirp->if_batchq; -} - -/* - * if_output: Queue packet into an output queue. - * There are 2 output queue's, if_fastq and if_batchq. - * Each output queue is a doubly linked list of double linked lists - * of mbufs, each list belonging to one "session" (socket). This - * way, we can output packets fairly by sending one packet from each - * session, instead of all the packets from one session, then all packets - * from the next session, etc. Packets on the if_fastq get absolute - * priority, but if one session hogs the link, it gets "downgraded" - * to the batchq until it runs out of packets, then it'll return - * to the fastq (eg. if the user does an ls -alR in a telnet session, - * it'll temporarily get downgraded to the batchq) - */ -void -if_output(struct socket *so, struct mbuf *ifm) -{ - Slirp *slirp = ifm->slirp; - struct mbuf *ifq; - int on_fastq = 1; - - DEBUG_CALL("if_output"); - DEBUG_ARG("so = %p", so); - DEBUG_ARG("ifm = %p", ifm); - - /* - * First remove the mbuf from m_usedlist, - * since we're gonna use m_next and m_prev ourselves - * XXX Shouldn't need this, gotta change dtom() etc. - */ - if (ifm->m_flags & M_USEDLIST) { - remque(ifm); - ifm->m_flags &= ~M_USEDLIST; - } - - /* - * See if there's already a batchq list for this session. - * This can include an interactive session, which should go on fastq, - * but gets too greedy... hence it'll be downgraded from fastq to batchq. - * We mustn't put this packet back on the fastq (or we'll send it out of order) - * XXX add cache here? - */ - if (so) { - for (ifq = (struct mbuf *) slirp->if_batchq.qh_rlink; - (struct quehead *) ifq != &slirp->if_batchq; - ifq = ifq->ifq_prev) { - if (so == ifq->ifq_so) { - /* A match! */ - ifm->ifq_so = so; - ifs_insque(ifm, ifq->ifs_prev); - goto diddit; - } - } - } - - /* No match, check which queue to put it on */ - if (so && (so->so_iptos & IPTOS_LOWDELAY)) { - ifq = (struct mbuf *) slirp->if_fastq.qh_rlink; - on_fastq = 1; - /* - * Check if this packet is a part of the last - * packet's session - */ - if (ifq->ifq_so == so) { - ifm->ifq_so = so; - ifs_insque(ifm, ifq->ifs_prev); - goto diddit; - } - } else { - ifq = (struct mbuf *) slirp->if_batchq.qh_rlink; - } - - /* Create a new doubly linked list for this session */ - ifm->ifq_so = so; - ifs_init(ifm); - insque(ifm, ifq); - -diddit: - if (so) { - /* Update *_queued */ - so->so_queued++; - so->so_nqueued++; - /* - * Check if the interactive session should be downgraded to - * the batchq. A session is downgraded if it has queued 6 - * packets without pausing, and at least 3 of those packets - * have been sent over the link - * (XXX These are arbitrary numbers, probably not optimal..) - */ - if (on_fastq && ((so->so_nqueued >= 6) && - (so->so_nqueued - so->so_queued) >= 3)) { - - /* Remove from current queue... */ - remque(ifm->ifs_next); - - /* ...And insert in the new. That'll teach ya! */ - insque(ifm->ifs_next, &slirp->if_batchq); - } - } - - /* - * This prevents us from malloc()ing too many mbufs - */ - if_start(ifm->slirp); -} - -/* - * Send one packet from each session. - * If there are packets on the fastq, they are sent FIFO, before - * everything else. Then we choose the first packet from each - * batchq session (socket) and send it. - * For example, if there are 3 ftp sessions fighting for bandwidth, - * one packet will be sent from the first session, then one packet - * from the second session, then one packet from the third. - */ -void if_start(Slirp *slirp) -{ - uint64_t now = slirp->cb->clock_get_ns(slirp->opaque); - bool from_batchq = false; - struct mbuf *ifm, *ifm_next, *ifqt; - - DEBUG_CALL("if_start"); - - if (slirp->if_start_busy) { - return; - } - slirp->if_start_busy = true; - - struct mbuf *batch_head = NULL; - if (slirp->if_batchq.qh_link != &slirp->if_batchq) { - batch_head = (struct mbuf *) slirp->if_batchq.qh_link; - } - - if (slirp->if_fastq.qh_link != &slirp->if_fastq) { - ifm_next = (struct mbuf *) slirp->if_fastq.qh_link; - } else if (batch_head) { - /* Nothing on fastq, pick up from batchq */ - ifm_next = batch_head; - from_batchq = true; - } else { - ifm_next = NULL; - } - - while (ifm_next) { - ifm = ifm_next; - - ifm_next = ifm->ifq_next; - if ((struct quehead *) ifm_next == &slirp->if_fastq) { - /* No more packets in fastq, switch to batchq */ - ifm_next = batch_head; - from_batchq = true; - } - if ((struct quehead *) ifm_next == &slirp->if_batchq) { - /* end of batchq */ - ifm_next = NULL; - } - - /* Try to send packet unless it already expired */ - if (ifm->expiration_date >= now && !if_encap(slirp, ifm)) { - /* Packet is delayed due to pending ARP or NDP resolution */ - continue; - } - - /* Remove it from the queue */ - ifqt = ifm->ifq_prev; - remque(ifm); - - /* If there are more packets for this session, re-queue them */ - if (ifm->ifs_next != ifm) { - struct mbuf *next = ifm->ifs_next; - - insque(next, ifqt); - ifs_remque(ifm); - if (!from_batchq) { - ifm_next = next; - } - } - - /* Update so_queued */ - if (ifm->ifq_so && --ifm->ifq_so->so_queued == 0) { - /* If there's no more queued, reset nqueued */ - ifm->ifq_so->so_nqueued = 0; - } - - m_free(ifm); - } - - slirp->if_start_busy = false; -} diff --git a/slirp/src/if.h b/slirp/src/if.h deleted file mode 100644 index b71c37d6ea..0000000000 --- a/slirp/src/if.h +++ /dev/null @@ -1,21 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1995 Danny Gasparovski. - */ - -#ifndef IF_H -#define IF_H - -#define IF_COMPRESS 0x01 /* We want compression */ -#define IF_NOCOMPRESS 0x02 /* Do not do compression */ -#define IF_AUTOCOMP 0x04 /* Autodetect (default) */ -#define IF_NOCIDCOMP 0x08 /* CID compression */ - -#define IF_MTU 1500 -#define IF_MRU 1500 -#define IF_COMP IF_AUTOCOMP /* Flags for compression */ - -/* 2 for alignment, 14 for ethernet */ -#define IF_MAXLINKHDR (2 + ETH_HLEN) - -#endif diff --git a/slirp/src/ip.h b/slirp/src/ip.h deleted file mode 100644 index 1484de1176..0000000000 --- a/slirp/src/ip.h +++ /dev/null @@ -1,242 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)ip.h 8.1 (Berkeley) 6/10/93 - * ip.h,v 1.3 1994/08/21 05:27:30 paul Exp - */ - -#ifndef IP_H -#define IP_H - -#include <glib.h> - -#if G_BYTE_ORDER == G_BIG_ENDIAN -# undef NTOHL -# undef NTOHS -# undef HTONL -# undef HTONS -# define NTOHL(d) -# define NTOHS(d) -# define HTONL(d) -# define HTONS(d) -#else -# ifndef NTOHL -# define NTOHL(d) ((d) = ntohl((d))) -# endif -# ifndef NTOHS -# define NTOHS(d) ((d) = ntohs((uint16_t)(d))) -# endif -# ifndef HTONL -# define HTONL(d) ((d) = htonl((d))) -# endif -# ifndef HTONS -# define HTONS(d) ((d) = htons((uint16_t)(d))) -# endif -#endif - -typedef uint32_t n_long; /* long as received from the net */ - -/* - * Definitions for internet protocol version 4. - * Per RFC 791, September 1981. - */ -#define IPVERSION 4 - -/* - * Structure of an internet header, naked of options. - */ -struct ip { -#if G_BYTE_ORDER == G_BIG_ENDIAN - uint8_t ip_v:4, /* version */ - ip_hl:4; /* header length */ -#else - uint8_t ip_hl:4, /* header length */ - ip_v:4; /* version */ -#endif - uint8_t ip_tos; /* type of service */ - uint16_t ip_len; /* total length */ - uint16_t ip_id; /* identification */ - uint16_t ip_off; /* fragment offset field */ -#define IP_DF 0x4000 /* don't fragment flag */ -#define IP_MF 0x2000 /* more fragments flag */ -#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ - uint8_t ip_ttl; /* time to live */ - uint8_t ip_p; /* protocol */ - uint16_t ip_sum; /* checksum */ - struct in_addr ip_src,ip_dst; /* source and dest address */ -} SLIRP_PACKED; - -#define IP_MAXPACKET 65535 /* maximum packet size */ - -/* - * Definitions for IP type of service (ip_tos) - */ -#define IPTOS_LOWDELAY 0x10 -#define IPTOS_THROUGHPUT 0x08 -#define IPTOS_RELIABILITY 0x04 - -/* - * Definitions for options. - */ -#define IPOPT_COPIED(o) ((o)&0x80) -#define IPOPT_CLASS(o) ((o)&0x60) -#define IPOPT_NUMBER(o) ((o)&0x1f) - -#define IPOPT_CONTROL 0x00 -#define IPOPT_RESERVED1 0x20 -#define IPOPT_DEBMEAS 0x40 -#define IPOPT_RESERVED2 0x60 - -#define IPOPT_EOL 0 /* end of option list */ -#define IPOPT_NOP 1 /* no operation */ - -#define IPOPT_RR 7 /* record packet route */ -#define IPOPT_TS 68 /* timestamp */ -#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */ -#define IPOPT_LSRR 131 /* loose source route */ -#define IPOPT_SATID 136 /* satnet id */ -#define IPOPT_SSRR 137 /* strict source route */ - -/* - * Offsets to fields in options other than EOL and NOP. - */ -#define IPOPT_OPTVAL 0 /* option ID */ -#define IPOPT_OLEN 1 /* option length */ -#define IPOPT_OFFSET 2 /* offset within option */ -#define IPOPT_MINOFF 4 /* min value of above */ - -/* - * Time stamp option structure. - */ -struct ip_timestamp { - uint8_t ipt_code; /* IPOPT_TS */ - uint8_t ipt_len; /* size of structure (variable) */ - uint8_t ipt_ptr; /* index of current entry */ -#if G_BYTE_ORDER == G_BIG_ENDIAN - uint8_t ipt_oflw:4, /* overflow counter */ - ipt_flg:4; /* flags, see below */ -#else - uint8_t ipt_flg:4, /* flags, see below */ - ipt_oflw:4; /* overflow counter */ -#endif - union ipt_timestamp { - n_long ipt_time[1]; - struct ipt_ta { - struct in_addr ipt_addr; - n_long ipt_time; - } ipt_ta[1]; - } ipt_timestamp; -} SLIRP_PACKED; - -/* flag bits for ipt_flg */ -#define IPOPT_TS_TSONLY 0 /* timestamps only */ -#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */ -#define IPOPT_TS_PRESPEC 3 /* specified modules only */ - -/* bits for security (not byte swapped) */ -#define IPOPT_SECUR_UNCLASS 0x0000 -#define IPOPT_SECUR_CONFID 0xf135 -#define IPOPT_SECUR_EFTO 0x789a -#define IPOPT_SECUR_MMMM 0xbc4d -#define IPOPT_SECUR_RESTR 0xaf13 -#define IPOPT_SECUR_SECRET 0xd788 -#define IPOPT_SECUR_TOPSECRET 0x6bc5 - -/* - * Internet implementation parameters. - */ -#define MAXTTL 255 /* maximum time to live (seconds) */ -#define IPDEFTTL 64 /* default ttl, from RFC 1340 */ -#define IPFRAGTTL 60 /* time to live for frags, slowhz */ -#define IPTTLDEC 1 /* subtracted when forwarding */ - -#define IP_MSS 576 /* default maximum segment size */ - -#if GLIB_SIZEOF_VOID_P == 4 -struct mbuf_ptr { - struct mbuf *mptr; - uint32_t dummy; -} SLIRP_PACKED; -#else -struct mbuf_ptr { - struct mbuf *mptr; -} SLIRP_PACKED; -#endif -struct qlink { - void *next, *prev; -}; - -/* - * Overlay for ip header used by other protocols (tcp, udp). - */ -struct ipovly { - struct mbuf_ptr ih_mbuf; /* backpointer to mbuf */ - uint8_t ih_x1; /* (unused) */ - uint8_t ih_pr; /* protocol */ - uint16_t ih_len; /* protocol length */ - struct in_addr ih_src; /* source internet address */ - struct in_addr ih_dst; /* destination internet address */ -} SLIRP_PACKED; - -/* - * Ip reassembly queue structure. Each fragment - * being reassembled is attached to one of these structures. - * They are timed out after ipq_ttl drops to 0, and may also - * be reclaimed if memory becomes tight. - * size 28 bytes - */ -struct ipq { - struct qlink frag_link; /* to ip headers of fragments */ - struct qlink ip_link; /* to other reass headers */ - uint8_t ipq_ttl; /* time for reass q to live */ - uint8_t ipq_p; /* protocol of this fragment */ - uint16_t ipq_id; /* sequence id for reassembly */ - struct in_addr ipq_src,ipq_dst; -}; - -/* - * Ip header, when holding a fragment. - * - * Note: ipf_link must be at same offset as frag_link above - */ -struct ipasfrag { - struct qlink ipf_link; - struct ip ipf_ip; -}; - -G_STATIC_ASSERT(offsetof(struct ipq, frag_link) == - offsetof(struct ipasfrag, ipf_link)); - -#define ipf_off ipf_ip.ip_off -#define ipf_tos ipf_ip.ip_tos -#define ipf_len ipf_ip.ip_len -#define ipf_next ipf_link.next -#define ipf_prev ipf_link.prev - -#endif diff --git a/slirp/src/ip6.h b/slirp/src/ip6.h deleted file mode 100644 index 33683c8e20..0000000000 --- a/slirp/src/ip6.h +++ /dev/null @@ -1,160 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 2013 - * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne. - */ - -#ifndef SLIRP_IP6_H -#define SLIRP_IP6_H - -#include <glib.h> -#include <string.h> - -#define ALLNODES_MULTICAST { .s6_addr = \ - { 0xff, 0x02, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x01 } } - -#define SOLICITED_NODE_PREFIX { .s6_addr = \ - { 0xff, 0x02, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x01,\ - 0xff, 0x00, 0x00, 0x00 } } - -#define LINKLOCAL_ADDR { .s6_addr = \ - { 0xfe, 0x80, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x02 } } - -#define ZERO_ADDR { .s6_addr = \ - { 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00,\ - 0x00, 0x00, 0x00, 0x00 } } - -static inline bool in6_equal(const struct in6_addr *a, const struct in6_addr *b) -{ - return memcmp(a, b, sizeof(*a)) == 0; -} - -static inline bool in6_equal_net(const struct in6_addr *a, - const struct in6_addr *b, - int prefix_len) -{ - if (memcmp(a, b, prefix_len / 8) != 0) { - return 0; - } - - if (prefix_len % 8 == 0) { - return 1; - } - - return a->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8)) - == b->s6_addr[prefix_len / 8] >> (8 - (prefix_len % 8)); -} - -static inline bool in6_equal_mach(const struct in6_addr *a, - const struct in6_addr *b, - int prefix_len) -{ - if (memcmp(&(a->s6_addr[DIV_ROUND_UP(prefix_len, 8)]), - &(b->s6_addr[DIV_ROUND_UP(prefix_len, 8)]), - 16 - DIV_ROUND_UP(prefix_len, 8)) != 0) { - return 0; - } - - if (prefix_len % 8 == 0) { - return 1; - } - - return (a->s6_addr[prefix_len / 8] & ((1U << (8 - (prefix_len % 8))) - 1)) - == (b->s6_addr[prefix_len / 8] & ((1U << (8 - (prefix_len % 8))) - 1)); -} - - -#define in6_equal_router(a)\ - ((in6_equal_net(a, &slirp->vprefix_addr6, slirp->vprefix_len)\ - && in6_equal_mach(a, &slirp->vhost_addr6, slirp->vprefix_len))\ - || (in6_equal_net(a, &(struct in6_addr)LINKLOCAL_ADDR, 64)\ - && in6_equal_mach(a, &slirp->vhost_addr6, 64))) - -#define in6_equal_dns(a)\ - ((in6_equal_net(a, &slirp->vprefix_addr6, slirp->vprefix_len)\ - && in6_equal_mach(a, &slirp->vnameserver_addr6, slirp->vprefix_len))\ - || (in6_equal_net(a, &(struct in6_addr)LINKLOCAL_ADDR, 64)\ - && in6_equal_mach(a, &slirp->vnameserver_addr6, 64))) - -#define in6_equal_host(a)\ - (in6_equal_router(a) || in6_equal_dns(a)) - -#define in6_solicitednode_multicast(a)\ - (in6_equal_net(a, &(struct in6_addr)SOLICITED_NODE_PREFIX, 104)) - -#define in6_zero(a)\ - (in6_equal(a, &(struct in6_addr)ZERO_ADDR)) - -/* Compute emulated host MAC address from its ipv6 address */ -static inline void in6_compute_ethaddr(struct in6_addr ip, - uint8_t eth[ETH_ALEN]) -{ - eth[0] = 0x52; - eth[1] = 0x56; - memcpy(ð[2], &ip.s6_addr[16 - (ETH_ALEN - 2)], ETH_ALEN - 2); -} - -/* - * Definitions for internet protocol version 6. - * Per RFC 2460, December 1998. - */ -#define IP6VERSION 6 -#define IP6_HOP_LIMIT 255 - -/* - * Structure of an internet header, naked of options. - */ -struct ip6 { -#if G_BYTE_ORDER == G_BIG_ENDIAN - uint32_t - ip_v:4, /* version */ - ip_tc_hi:4, /* traffic class */ - ip_tc_lo:4, - ip_fl_hi:4, /* flow label */ - ip_fl_lo:16; -#else - uint32_t - ip_tc_hi:4, - ip_v:4, - ip_fl_hi:4, - ip_tc_lo:4, - ip_fl_lo:16; -#endif - uint16_t ip_pl; /* payload length */ - uint8_t ip_nh; /* next header */ - uint8_t ip_hl; /* hop limit */ - struct in6_addr ip_src, ip_dst; /* source and dest address */ -}; - -/* - * IPv6 pseudo-header used by upper-layer protocols - */ -struct ip6_pseudohdr { - struct in6_addr ih_src; /* source internet address */ - struct in6_addr ih_dst; /* destination internet address */ - uint32_t ih_pl; /* upper-layer packet length */ - uint16_t ih_zero_hi; /* zero */ - uint8_t ih_zero_lo; /* zero */ - uint8_t ih_nh; /* next header */ -}; - -/* - * We don't want to mark these ip6 structs as packed as they are naturally - * correctly aligned; instead assert that there is no stray padding. - * If we marked the struct as packed then we would be unable to take - * the address of any of the fields in it. - */ -G_STATIC_ASSERT(sizeof(struct ip6) == 40); -G_STATIC_ASSERT(sizeof(struct ip6_pseudohdr) == 40); - -#endif diff --git a/slirp/src/ip6_icmp.c b/slirp/src/ip6_icmp.c deleted file mode 100644 index 5642457fdd..0000000000 --- a/slirp/src/ip6_icmp.c +++ /dev/null @@ -1,438 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 2013 - * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne. - */ - -#include "slirp.h" -#include "ip6_icmp.h" - -#define NDP_Interval g_rand_int_range(slirp->grand, \ - NDP_MinRtrAdvInterval, NDP_MaxRtrAdvInterval) - -static void ra_timer_handler(void *opaque) -{ - Slirp *slirp = opaque; - - slirp->cb->timer_mod(slirp->ra_timer, - slirp->cb->clock_get_ns(slirp->opaque) / SCALE_MS + NDP_Interval, - slirp->opaque); - ndp_send_ra(slirp); -} - -void icmp6_init(Slirp *slirp) -{ - if (!slirp->in6_enabled) { - return; - } - - slirp->ra_timer = slirp->cb->timer_new(ra_timer_handler, slirp, slirp->opaque); - slirp->cb->timer_mod(slirp->ra_timer, - slirp->cb->clock_get_ns(slirp->opaque) / SCALE_MS + NDP_Interval, - slirp->opaque); -} - -void icmp6_cleanup(Slirp *slirp) -{ - if (!slirp->in6_enabled) { - return; - } - - slirp->cb->timer_free(slirp->ra_timer, slirp->opaque); -} - -static void icmp6_send_echoreply(struct mbuf *m, Slirp *slirp, struct ip6 *ip, - struct icmp6 *icmp) -{ - struct mbuf *t = m_get(slirp); - t->m_len = sizeof(struct ip6) + ntohs(ip->ip_pl); - memcpy(t->m_data, m->m_data, t->m_len); - - /* IPv6 Packet */ - struct ip6 *rip = mtod(t, struct ip6 *); - rip->ip_dst = ip->ip_src; - rip->ip_src = ip->ip_dst; - - /* ICMPv6 packet */ - t->m_data += sizeof(struct ip6); - struct icmp6 *ricmp = mtod(t, struct icmp6 *); - ricmp->icmp6_type = ICMP6_ECHO_REPLY; - ricmp->icmp6_cksum = 0; - - /* Checksum */ - t->m_data -= sizeof(struct ip6); - ricmp->icmp6_cksum = ip6_cksum(t); - - ip6_output(NULL, t, 0); -} - -void icmp6_send_error(struct mbuf *m, uint8_t type, uint8_t code) -{ - Slirp *slirp = m->slirp; - struct mbuf *t; - struct ip6 *ip = mtod(m, struct ip6 *); - char addrstr[INET6_ADDRSTRLEN]; - - DEBUG_CALL("icmp6_send_error"); - DEBUG_ARG("type = %d, code = %d", type, code); - - if (IN6_IS_ADDR_MULTICAST(&ip->ip_src) || - in6_zero(&ip->ip_src)) { - /* TODO icmp error? */ - return; - } - - t = m_get(slirp); - - /* IPv6 packet */ - struct ip6 *rip = mtod(t, struct ip6 *); - rip->ip_src = (struct in6_addr)LINKLOCAL_ADDR; - rip->ip_dst = ip->ip_src; - inet_ntop(AF_INET6, &rip->ip_dst, addrstr, INET6_ADDRSTRLEN); - DEBUG_ARG("target = %s", addrstr); - - rip->ip_nh = IPPROTO_ICMPV6; - const int error_data_len = MIN(m->m_len, - IF_MTU - (sizeof(struct ip6) + ICMP6_ERROR_MINLEN)); - rip->ip_pl = htons(ICMP6_ERROR_MINLEN + error_data_len); - t->m_len = sizeof(struct ip6) + ntohs(rip->ip_pl); - - /* ICMPv6 packet */ - t->m_data += sizeof(struct ip6); - struct icmp6 *ricmp = mtod(t, struct icmp6 *); - ricmp->icmp6_type = type; - ricmp->icmp6_code = code; - ricmp->icmp6_cksum = 0; - - switch (type) { - case ICMP6_UNREACH: - case ICMP6_TIMXCEED: - ricmp->icmp6_err.unused = 0; - break; - case ICMP6_TOOBIG: - ricmp->icmp6_err.mtu = htonl(IF_MTU); - break; - case ICMP6_PARAMPROB: - /* TODO: Handle this case */ - break; - default: - g_assert_not_reached(); - break; - } - t->m_data += ICMP6_ERROR_MINLEN; - memcpy(t->m_data, m->m_data, error_data_len); - - /* Checksum */ - t->m_data -= ICMP6_ERROR_MINLEN; - t->m_data -= sizeof(struct ip6); - ricmp->icmp6_cksum = ip6_cksum(t); - - ip6_output(NULL, t, 0); -} - -/* - * Send NDP Router Advertisement - */ -void ndp_send_ra(Slirp *slirp) -{ - DEBUG_CALL("ndp_send_ra"); - - /* Build IPv6 packet */ - struct mbuf *t = m_get(slirp); - struct ip6 *rip = mtod(t, struct ip6 *); - size_t pl_size = 0; - struct in6_addr addr; - uint32_t scope_id; - - rip->ip_src = (struct in6_addr)LINKLOCAL_ADDR; - rip->ip_dst = (struct in6_addr)ALLNODES_MULTICAST; - rip->ip_nh = IPPROTO_ICMPV6; - - /* Build ICMPv6 packet */ - t->m_data += sizeof(struct ip6); - struct icmp6 *ricmp = mtod(t, struct icmp6 *); - ricmp->icmp6_type = ICMP6_NDP_RA; - ricmp->icmp6_code = 0; - ricmp->icmp6_cksum = 0; - - /* NDP */ - ricmp->icmp6_nra.chl = NDP_AdvCurHopLimit; - ricmp->icmp6_nra.M = NDP_AdvManagedFlag; - ricmp->icmp6_nra.O = NDP_AdvOtherConfigFlag; - ricmp->icmp6_nra.reserved = 0; - ricmp->icmp6_nra.lifetime = htons(NDP_AdvDefaultLifetime); - ricmp->icmp6_nra.reach_time = htonl(NDP_AdvReachableTime); - ricmp->icmp6_nra.retrans_time = htonl(NDP_AdvRetransTime); - t->m_data += ICMP6_NDP_RA_MINLEN; - pl_size += ICMP6_NDP_RA_MINLEN; - - /* Source link-layer address (NDP option) */ - struct ndpopt *opt = mtod(t, struct ndpopt *); - opt->ndpopt_type = NDPOPT_LINKLAYER_SOURCE; - opt->ndpopt_len = NDPOPT_LINKLAYER_LEN / 8; - in6_compute_ethaddr(rip->ip_src, opt->ndpopt_linklayer); - t->m_data += NDPOPT_LINKLAYER_LEN; - pl_size += NDPOPT_LINKLAYER_LEN; - - /* Prefix information (NDP option) */ - struct ndpopt *opt2 = mtod(t, struct ndpopt *); - opt2->ndpopt_type = NDPOPT_PREFIX_INFO; - opt2->ndpopt_len = NDPOPT_PREFIXINFO_LEN / 8; - opt2->ndpopt_prefixinfo.prefix_length = slirp->vprefix_len; - opt2->ndpopt_prefixinfo.L = 1; - opt2->ndpopt_prefixinfo.A = 1; - opt2->ndpopt_prefixinfo.reserved1 = 0; - opt2->ndpopt_prefixinfo.valid_lt = htonl(NDP_AdvValidLifetime); - opt2->ndpopt_prefixinfo.pref_lt = htonl(NDP_AdvPrefLifetime); - opt2->ndpopt_prefixinfo.reserved2 = 0; - opt2->ndpopt_prefixinfo.prefix = slirp->vprefix_addr6; - t->m_data += NDPOPT_PREFIXINFO_LEN; - pl_size += NDPOPT_PREFIXINFO_LEN; - - /* Prefix information (NDP option) */ - if (get_dns6_addr(&addr, &scope_id) >= 0) { - /* Host system does have an IPv6 DNS server, announce our proxy. */ - struct ndpopt *opt3 = mtod(t, struct ndpopt *); - opt3->ndpopt_type = NDPOPT_RDNSS; - opt3->ndpopt_len = NDPOPT_RDNSS_LEN / 8; - opt3->ndpopt_rdnss.reserved = 0; - opt3->ndpopt_rdnss.lifetime = htonl(2 * NDP_MaxRtrAdvInterval); - opt3->ndpopt_rdnss.addr = slirp->vnameserver_addr6; - t->m_data += NDPOPT_RDNSS_LEN; - pl_size += NDPOPT_RDNSS_LEN; - } - - rip->ip_pl = htons(pl_size); - t->m_data -= sizeof(struct ip6) + pl_size; - t->m_len = sizeof(struct ip6) + pl_size; - - /* ICMPv6 Checksum */ - ricmp->icmp6_cksum = ip6_cksum(t); - - ip6_output(NULL, t, 0); -} - -/* - * Send NDP Neighbor Solitication - */ -void ndp_send_ns(Slirp *slirp, struct in6_addr addr) -{ - char addrstr[INET6_ADDRSTRLEN]; - - inet_ntop(AF_INET6, &addr, addrstr, INET6_ADDRSTRLEN); - - DEBUG_CALL("ndp_send_ns"); - DEBUG_ARG("target = %s", addrstr); - - /* Build IPv6 packet */ - struct mbuf *t = m_get(slirp); - struct ip6 *rip = mtod(t, struct ip6 *); - rip->ip_src = slirp->vhost_addr6; - rip->ip_dst = (struct in6_addr)SOLICITED_NODE_PREFIX; - memcpy(&rip->ip_dst.s6_addr[13], &addr.s6_addr[13], 3); - rip->ip_nh = IPPROTO_ICMPV6; - rip->ip_pl = htons(ICMP6_NDP_NS_MINLEN + NDPOPT_LINKLAYER_LEN); - t->m_len = sizeof(struct ip6) + ntohs(rip->ip_pl); - - /* Build ICMPv6 packet */ - t->m_data += sizeof(struct ip6); - struct icmp6 *ricmp = mtod(t, struct icmp6 *); - ricmp->icmp6_type = ICMP6_NDP_NS; - ricmp->icmp6_code = 0; - ricmp->icmp6_cksum = 0; - - /* NDP */ - ricmp->icmp6_nns.reserved = 0; - ricmp->icmp6_nns.target = addr; - - /* Build NDP option */ - t->m_data += ICMP6_NDP_NS_MINLEN; - struct ndpopt *opt = mtod(t, struct ndpopt *); - opt->ndpopt_type = NDPOPT_LINKLAYER_SOURCE; - opt->ndpopt_len = NDPOPT_LINKLAYER_LEN / 8; - in6_compute_ethaddr(slirp->vhost_addr6, opt->ndpopt_linklayer); - - /* ICMPv6 Checksum */ - t->m_data -= ICMP6_NDP_NA_MINLEN; - t->m_data -= sizeof(struct ip6); - ricmp->icmp6_cksum = ip6_cksum(t); - - ip6_output(NULL, t, 1); -} - -/* - * Send NDP Neighbor Advertisement - */ -static void ndp_send_na(Slirp *slirp, struct ip6 *ip, struct icmp6 *icmp) -{ - /* Build IPv6 packet */ - struct mbuf *t = m_get(slirp); - struct ip6 *rip = mtod(t, struct ip6 *); - rip->ip_src = icmp->icmp6_nns.target; - if (in6_zero(&ip->ip_src)) { - rip->ip_dst = (struct in6_addr)ALLNODES_MULTICAST; - } else { - rip->ip_dst = ip->ip_src; - } - rip->ip_nh = IPPROTO_ICMPV6; - rip->ip_pl = htons(ICMP6_NDP_NA_MINLEN - + NDPOPT_LINKLAYER_LEN); - t->m_len = sizeof(struct ip6) + ntohs(rip->ip_pl); - - /* Build ICMPv6 packet */ - t->m_data += sizeof(struct ip6); - struct icmp6 *ricmp = mtod(t, struct icmp6 *); - ricmp->icmp6_type = ICMP6_NDP_NA; - ricmp->icmp6_code = 0; - ricmp->icmp6_cksum = 0; - - /* NDP */ - ricmp->icmp6_nna.R = NDP_IsRouter; - ricmp->icmp6_nna.S = !IN6_IS_ADDR_MULTICAST(&rip->ip_dst); - ricmp->icmp6_nna.O = 1; - ricmp->icmp6_nna.reserved_hi = 0; - ricmp->icmp6_nna.reserved_lo = 0; - ricmp->icmp6_nna.target = icmp->icmp6_nns.target; - - /* Build NDP option */ - t->m_data += ICMP6_NDP_NA_MINLEN; - struct ndpopt *opt = mtod(t, struct ndpopt *); - opt->ndpopt_type = NDPOPT_LINKLAYER_TARGET; - opt->ndpopt_len = NDPOPT_LINKLAYER_LEN / 8; - in6_compute_ethaddr(ricmp->icmp6_nna.target, - opt->ndpopt_linklayer); - - /* ICMPv6 Checksum */ - t->m_data -= ICMP6_NDP_NA_MINLEN; - t->m_data -= sizeof(struct ip6); - ricmp->icmp6_cksum = ip6_cksum(t); - - ip6_output(NULL, t, 0); -} - -/* - * Process a NDP message - */ -static void ndp_input(struct mbuf *m, Slirp *slirp, struct ip6 *ip, - struct icmp6 *icmp) -{ - m->m_len += ETH_HLEN; - m->m_data -= ETH_HLEN; - struct ethhdr *eth = mtod(m, struct ethhdr *); - m->m_len -= ETH_HLEN; - m->m_data += ETH_HLEN; - - switch (icmp->icmp6_type) { - case ICMP6_NDP_RS: - DEBUG_CALL(" type = Router Solicitation"); - if (ip->ip_hl == 255 - && icmp->icmp6_code == 0 - && ntohs(ip->ip_pl) >= ICMP6_NDP_RS_MINLEN) { - /* Gratuitous NDP */ - ndp_table_add(slirp, ip->ip_src, eth->h_source); - - ndp_send_ra(slirp); - } - break; - - case ICMP6_NDP_RA: - DEBUG_CALL(" type = Router Advertisement"); - slirp->cb->guest_error("Warning: guest sent NDP RA, but shouldn't", - slirp->opaque); - break; - - case ICMP6_NDP_NS: - DEBUG_CALL(" type = Neighbor Solicitation"); - if (ip->ip_hl == 255 - && icmp->icmp6_code == 0 - && !IN6_IS_ADDR_MULTICAST(&icmp->icmp6_nns.target) - && ntohs(ip->ip_pl) >= ICMP6_NDP_NS_MINLEN - && (!in6_zero(&ip->ip_src) - || in6_solicitednode_multicast(&ip->ip_dst))) { - if (in6_equal_host(&icmp->icmp6_nns.target)) { - /* Gratuitous NDP */ - ndp_table_add(slirp, ip->ip_src, eth->h_source); - ndp_send_na(slirp, ip, icmp); - } - } - break; - - case ICMP6_NDP_NA: - DEBUG_CALL(" type = Neighbor Advertisement"); - if (ip->ip_hl == 255 - && icmp->icmp6_code == 0 - && ntohs(ip->ip_pl) >= ICMP6_NDP_NA_MINLEN - && !IN6_IS_ADDR_MULTICAST(&icmp->icmp6_nna.target) - && (!IN6_IS_ADDR_MULTICAST(&ip->ip_dst) - || icmp->icmp6_nna.S == 0)) { - ndp_table_add(slirp, ip->ip_src, eth->h_source); - } - break; - - case ICMP6_NDP_REDIRECT: - DEBUG_CALL(" type = Redirect"); - slirp->cb->guest_error( - "Warning: guest sent NDP REDIRECT, but shouldn't", slirp->opaque); - break; - } -} - -/* - * Process a received ICMPv6 message. - */ -void icmp6_input(struct mbuf *m) -{ - struct icmp6 *icmp; - struct ip6 *ip = mtod(m, struct ip6 *); - Slirp *slirp = m->slirp; - int hlen = sizeof(struct ip6); - - DEBUG_CALL("icmp6_input"); - DEBUG_ARG("m = %p", m); - DEBUG_ARG("m_len = %d", m->m_len); - - if (ntohs(ip->ip_pl) < ICMP6_MINLEN) { - goto end; - } - - if (ip6_cksum(m)) { - goto end; - } - - m->m_len -= hlen; - m->m_data += hlen; - icmp = mtod(m, struct icmp6 *); - m->m_len += hlen; - m->m_data -= hlen; - - DEBUG_ARG("icmp6_type = %d", icmp->icmp6_type); - switch (icmp->icmp6_type) { - case ICMP6_ECHO_REQUEST: - if (in6_equal_host(&ip->ip_dst)) { - icmp6_send_echoreply(m, slirp, ip, icmp); - } else { - /* TODO */ - g_critical("external icmpv6 not supported yet"); - } - break; - - case ICMP6_NDP_RS: - case ICMP6_NDP_RA: - case ICMP6_NDP_NS: - case ICMP6_NDP_NA: - case ICMP6_NDP_REDIRECT: - ndp_input(m, slirp, ip, icmp); - break; - - case ICMP6_UNREACH: - case ICMP6_TOOBIG: - case ICMP6_TIMXCEED: - case ICMP6_PARAMPROB: - /* XXX? report error? close socket? */ - default: - break; - } - -end: - m_free(m); -} diff --git a/slirp/src/ip6_icmp.h b/slirp/src/ip6_icmp.h deleted file mode 100644 index d8d13e30fc..0000000000 --- a/slirp/src/ip6_icmp.h +++ /dev/null @@ -1,232 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 2013 - * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne. - */ - -#ifndef SLIRP_IP6_ICMP_H -#define SLIRP_IP6_ICMP_H - -/* - * Interface Control Message Protocol version 6 Definitions. - * Per RFC 4443, March 2006. - * - * Network Discover Protocol Definitions. - * Per RFC 4861, September 2007. - */ - -struct icmp6_echo { /* Echo Messages */ - uint16_t id; - uint16_t seq_num; -}; - -union icmp6_error_body { - uint32_t unused; - uint32_t pointer; - uint32_t mtu; -}; - -/* - * NDP Messages - */ -struct ndp_rs { /* Router Solicitation Message */ - uint32_t reserved; -}; - -struct ndp_ra { /* Router Advertisement Message */ - uint8_t chl; /* Cur Hop Limit */ -#if G_BYTE_ORDER == G_BIG_ENDIAN - uint8_t - M:1, - O:1, - reserved:6; -#else - uint8_t - reserved:6, - O:1, - M:1; -#endif - uint16_t lifetime; /* Router Lifetime */ - uint32_t reach_time; /* Reachable Time */ - uint32_t retrans_time; /* Retrans Timer */ -}; - -G_STATIC_ASSERT(sizeof(struct ndp_ra) == 12); - -struct ndp_ns { /* Neighbor Solicitation Message */ - uint32_t reserved; - struct in6_addr target; /* Target Address */ -}; - -G_STATIC_ASSERT(sizeof(struct ndp_ns) == 20); - -struct ndp_na { /* Neighbor Advertisement Message */ -#if G_BYTE_ORDER == G_BIG_ENDIAN - uint32_t - R:1, /* Router Flag */ - S:1, /* Solicited Flag */ - O:1, /* Override Flag */ - reserved_hi:5, - reserved_lo:24; -#else - uint32_t - reserved_hi:5, - O:1, - S:1, - R:1, - reserved_lo:24; -#endif - struct in6_addr target; /* Target Address */ -}; - -G_STATIC_ASSERT(sizeof(struct ndp_na) == 20); - -struct ndp_redirect { - uint32_t reserved; - struct in6_addr target; /* Target Address */ - struct in6_addr dest; /* Destination Address */ -}; - -G_STATIC_ASSERT(sizeof(struct ndp_redirect) == 36); - -/* - * Structure of an icmpv6 header. - */ -struct icmp6 { - uint8_t icmp6_type; /* type of message, see below */ - uint8_t icmp6_code; /* type sub code */ - uint16_t icmp6_cksum; /* ones complement cksum of struct */ - union { - union icmp6_error_body error_body; - struct icmp6_echo echo; - struct ndp_rs ndp_rs; - struct ndp_ra ndp_ra; - struct ndp_ns ndp_ns; - struct ndp_na ndp_na; - struct ndp_redirect ndp_redirect; - } icmp6_body; -#define icmp6_err icmp6_body.error_body -#define icmp6_echo icmp6_body.echo -#define icmp6_nrs icmp6_body.ndp_rs -#define icmp6_nra icmp6_body.ndp_ra -#define icmp6_nns icmp6_body.ndp_ns -#define icmp6_nna icmp6_body.ndp_na -#define icmp6_redirect icmp6_body.ndp_redirect -}; - -G_STATIC_ASSERT(sizeof(struct icmp6) == 40); - -#define ICMP6_MINLEN 4 -#define ICMP6_ERROR_MINLEN 8 -#define ICMP6_ECHO_MINLEN 8 -#define ICMP6_NDP_RS_MINLEN 8 -#define ICMP6_NDP_RA_MINLEN 16 -#define ICMP6_NDP_NS_MINLEN 24 -#define ICMP6_NDP_NA_MINLEN 24 -#define ICMP6_NDP_REDIRECT_MINLEN 40 - -/* - * NDP Options - */ -struct ndpopt { - uint8_t ndpopt_type; /* Option type */ - uint8_t ndpopt_len; /* /!\ In units of 8 octets */ - union { - unsigned char linklayer_addr[6]; /* Source/Target Link-layer */ -#define ndpopt_linklayer ndpopt_body.linklayer_addr - struct prefixinfo { /* Prefix Information */ - uint8_t prefix_length; -#if G_BYTE_ORDER == G_BIG_ENDIAN - uint8_t L:1, A:1, reserved1:6; -#else - uint8_t reserved1:6, A:1, L:1; -#endif - uint32_t valid_lt; /* Valid Lifetime */ - uint32_t pref_lt; /* Preferred Lifetime */ - uint32_t reserved2; - struct in6_addr prefix; - } SLIRP_PACKED prefixinfo; -#define ndpopt_prefixinfo ndpopt_body.prefixinfo - struct rdnss { - uint16_t reserved; - uint32_t lifetime; - struct in6_addr addr; - } SLIRP_PACKED rdnss; -#define ndpopt_rdnss ndpopt_body.rdnss - } ndpopt_body; -} SLIRP_PACKED; - -/* NDP options type */ -#define NDPOPT_LINKLAYER_SOURCE 1 /* Source Link-Layer Address */ -#define NDPOPT_LINKLAYER_TARGET 2 /* Target Link-Layer Address */ -#define NDPOPT_PREFIX_INFO 3 /* Prefix Information */ -#define NDPOPT_RDNSS 25 /* Recursive DNS Server Address */ - -/* NDP options size, in octets. */ -#define NDPOPT_LINKLAYER_LEN 8 -#define NDPOPT_PREFIXINFO_LEN 32 -#define NDPOPT_RDNSS_LEN 24 - -/* - * Definition of type and code field values. - * Per https://www.iana.org/assignments/icmpv6-parameters/icmpv6-parameters.xml - * Last Updated 2012-11-12 - */ - -/* Errors */ -#define ICMP6_UNREACH 1 /* Destination Unreachable */ -#define ICMP6_UNREACH_NO_ROUTE 0 /* no route to dest */ -#define ICMP6_UNREACH_DEST_PROHIB 1 /* com with dest prohibited */ -#define ICMP6_UNREACH_SCOPE 2 /* beyond scope of src addr */ -#define ICMP6_UNREACH_ADDRESS 3 /* address unreachable */ -#define ICMP6_UNREACH_PORT 4 /* port unreachable */ -#define ICMP6_UNREACH_SRC_FAIL 5 /* src addr failed */ -#define ICMP6_UNREACH_REJECT_ROUTE 6 /* reject route to dest */ -#define ICMP6_UNREACH_SRC_HDR_ERROR 7 /* error in src routing header */ -#define ICMP6_TOOBIG 2 /* Packet Too Big */ -#define ICMP6_TIMXCEED 3 /* Time Exceeded */ -#define ICMP6_TIMXCEED_INTRANS 0 /* hop limit exceeded in transit */ -#define ICMP6_TIMXCEED_REASS 1 /* ttl=0 in reass */ -#define ICMP6_PARAMPROB 4 /* Parameter Problem */ -#define ICMP6_PARAMPROB_HDR_FIELD 0 /* err header field */ -#define ICMP6_PARAMPROB_NXTHDR_TYPE 1 /* unrecognized Next Header type */ -#define ICMP6_PARAMPROB_IPV6_OPT 2 /* unrecognized IPv6 option */ - -/* Informational Messages */ -#define ICMP6_ECHO_REQUEST 128 /* Echo Request */ -#define ICMP6_ECHO_REPLY 129 /* Echo Reply */ -#define ICMP6_NDP_RS 133 /* Router Solicitation (NDP) */ -#define ICMP6_NDP_RA 134 /* Router Advertisement (NDP) */ -#define ICMP6_NDP_NS 135 /* Neighbor Solicitation (NDP) */ -#define ICMP6_NDP_NA 136 /* Neighbor Advertisement (NDP) */ -#define ICMP6_NDP_REDIRECT 137 /* Redirect Message (NDP) */ - -/* - * Router Configuration Variables (rfc4861#section-6) - */ -#define NDP_IsRouter 1 -#define NDP_AdvSendAdvertisements 1 -#define NDP_MaxRtrAdvInterval 600000 -#define NDP_MinRtrAdvInterval ((NDP_MaxRtrAdvInterval >= 9) ? \ - NDP_MaxRtrAdvInterval / 3 : \ - NDP_MaxRtrAdvInterval) -#define NDP_AdvManagedFlag 0 -#define NDP_AdvOtherConfigFlag 0 -#define NDP_AdvLinkMTU 0 -#define NDP_AdvReachableTime 0 -#define NDP_AdvRetransTime 0 -#define NDP_AdvCurHopLimit 64 -#define NDP_AdvDefaultLifetime ((3 * NDP_MaxRtrAdvInterval) / 1000) -#define NDP_AdvValidLifetime 86400 -#define NDP_AdvOnLinkFlag 1 -#define NDP_AdvPrefLifetime 14400 -#define NDP_AdvAutonomousFlag 1 - -void icmp6_init(Slirp *slirp); -void icmp6_cleanup(Slirp *slirp); -void icmp6_input(struct mbuf *); -void icmp6_send_error(struct mbuf *m, uint8_t type, uint8_t code); -void ndp_send_ra(Slirp *slirp); -void ndp_send_ns(Slirp *slirp, struct in6_addr addr); - -#endif diff --git a/slirp/src/ip6_input.c b/slirp/src/ip6_input.c deleted file mode 100644 index d9d2b7e9cd..0000000000 --- a/slirp/src/ip6_input.c +++ /dev/null @@ -1,78 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 2013 - * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne. - */ - -#include "slirp.h" -#include "ip6_icmp.h" - -/* - * IP initialization: fill in IP protocol switch table. - * All protocols not implemented in kernel go to raw IP protocol handler. - */ -void ip6_init(Slirp *slirp) -{ - icmp6_init(slirp); -} - -void ip6_cleanup(Slirp *slirp) -{ - icmp6_cleanup(slirp); -} - -void ip6_input(struct mbuf *m) -{ - struct ip6 *ip6; - Slirp *slirp = m->slirp; - - if (!slirp->in6_enabled) { - goto bad; - } - - DEBUG_CALL("ip6_input"); - DEBUG_ARG("m = %p", m); - DEBUG_ARG("m_len = %d", m->m_len); - - if (m->m_len < sizeof(struct ip6)) { - goto bad; - } - - ip6 = mtod(m, struct ip6 *); - - if (ip6->ip_v != IP6VERSION) { - goto bad; - } - - if (ntohs(ip6->ip_pl) > IF_MTU) { - icmp6_send_error(m, ICMP6_TOOBIG, 0); - goto bad; - } - - /* check ip_ttl for a correct ICMP reply */ - if (ip6->ip_hl == 0) { - icmp6_send_error(m, ICMP6_TIMXCEED, ICMP6_TIMXCEED_INTRANS); - goto bad; - } - - /* - * Switch out to protocol's input routine. - */ - switch (ip6->ip_nh) { - case IPPROTO_TCP: - NTOHS(ip6->ip_pl); - tcp_input(m, sizeof(struct ip6), (struct socket *)NULL, AF_INET6); - break; - case IPPROTO_UDP: - udp6_input(m); - break; - case IPPROTO_ICMPV6: - icmp6_input(m); - break; - default: - m_free(m); - } - return; -bad: - m_free(m); -} diff --git a/slirp/src/ip6_output.c b/slirp/src/ip6_output.c deleted file mode 100644 index b86110662c..0000000000 --- a/slirp/src/ip6_output.c +++ /dev/null @@ -1,39 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 2013 - * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne. - */ - -#include "slirp.h" - -/* Number of packets queued before we start sending - * (to prevent allocing too many mbufs) */ -#define IF6_THRESH 10 - -/* - * IPv6 output. The packet in mbuf chain m contains a IP header - */ -int ip6_output(struct socket *so, struct mbuf *m, int fast) -{ - struct ip6 *ip = mtod(m, struct ip6 *); - - DEBUG_CALL("ip6_output"); - DEBUG_ARG("so = %p", so); - DEBUG_ARG("m = %p", m); - - /* Fill IPv6 header */ - ip->ip_v = IP6VERSION; - ip->ip_hl = IP6_HOP_LIMIT; - ip->ip_tc_hi = 0; - ip->ip_tc_lo = 0; - ip->ip_fl_hi = 0; - ip->ip_fl_lo = 0; - - if (fast) { - if_encap(m->slirp, m); - } else { - if_output(so, m); - } - - return 0; -} diff --git a/slirp/src/ip_icmp.c b/slirp/src/ip_icmp.c deleted file mode 100644 index 1aea18afa7..0000000000 --- a/slirp/src/ip_icmp.c +++ /dev/null @@ -1,470 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1988, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)ip_icmp.c 8.2 (Berkeley) 1/4/94 - * ip_icmp.c,v 1.7 1995/05/30 08:09:42 rgrimes Exp - */ - -#include "slirp.h" -#include "ip_icmp.h" - -#ifndef WITH_ICMP_ERROR_MSG -#define WITH_ICMP_ERROR_MSG 0 -#endif - -/* The message sent when emulating PING */ -/* Be nice and tell them it's just a pseudo-ping packet */ -static const char icmp_ping_msg[] = "This is a pseudo-PING packet used by Slirp to emulate ICMP ECHO-REQUEST packets.\n"; - -/* list of actions for icmp_send_error() on RX of an icmp message */ -static const int icmp_flush[19] = { -/* ECHO REPLY (0) */ 0, - 1, - 1, -/* DEST UNREACH (3) */ 1, -/* SOURCE QUENCH (4)*/ 1, -/* REDIRECT (5) */ 1, - 1, - 1, -/* ECHO (8) */ 0, -/* ROUTERADVERT (9) */ 1, -/* ROUTERSOLICIT (10) */ 1, -/* TIME EXCEEDED (11) */ 1, -/* PARAMETER PROBLEM (12) */ 1, -/* TIMESTAMP (13) */ 0, -/* TIMESTAMP REPLY (14) */ 0, -/* INFO (15) */ 0, -/* INFO REPLY (16) */ 0, -/* ADDR MASK (17) */ 0, -/* ADDR MASK REPLY (18) */ 0 -}; - -void icmp_init(Slirp *slirp) -{ - slirp->icmp.so_next = slirp->icmp.so_prev = &slirp->icmp; - slirp->icmp_last_so = &slirp->icmp; -} - -void icmp_cleanup(Slirp *slirp) -{ - while (slirp->icmp.so_next != &slirp->icmp) { - icmp_detach(slirp->icmp.so_next); - } -} - -static int icmp_send(struct socket *so, struct mbuf *m, int hlen) -{ - struct ip *ip = mtod(m, struct ip *); - struct sockaddr_in addr; - - so->s = slirp_socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP); - if (so->s == -1) { - return -1; - } - - so->so_m = m; - so->so_faddr = ip->ip_dst; - so->so_laddr = ip->ip_src; - so->so_iptos = ip->ip_tos; - so->so_type = IPPROTO_ICMP; - so->so_state = SS_ISFCONNECTED; - so->so_expire = curtime + SO_EXPIRE; - - addr.sin_family = AF_INET; - addr.sin_addr = so->so_faddr; - - insque(so, &so->slirp->icmp); - - if (sendto(so->s, m->m_data + hlen, m->m_len - hlen, 0, - (struct sockaddr *)&addr, sizeof(addr)) == -1) { - DEBUG_MISC("icmp_input icmp sendto tx errno = %d-%s", - errno, strerror(errno)); - icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0, strerror(errno)); - icmp_detach(so); - } - - return 0; -} - -void icmp_detach(struct socket *so) -{ - so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque); - closesocket(so->s); - sofree(so); -} - -/* - * Process a received ICMP message. - */ -void -icmp_input(struct mbuf *m, int hlen) -{ - register struct icmp *icp; - register struct ip *ip=mtod(m, struct ip *); - int icmplen=ip->ip_len; - Slirp *slirp = m->slirp; - - DEBUG_CALL("icmp_input"); - DEBUG_ARG("m = %p", m); - DEBUG_ARG("m_len = %d", m->m_len); - - /* - * Locate icmp structure in mbuf, and check - * that its not corrupted and of at least minimum length. - */ - if (icmplen < ICMP_MINLEN) { /* min 8 bytes payload */ - freeit: - m_free(m); - goto end_error; - } - - m->m_len -= hlen; - m->m_data += hlen; - icp = mtod(m, struct icmp *); - if (cksum(m, icmplen)) { - goto freeit; - } - m->m_len += hlen; - m->m_data -= hlen; - - DEBUG_ARG("icmp_type = %d", icp->icmp_type); - switch (icp->icmp_type) { - case ICMP_ECHO: - ip->ip_len += hlen; /* since ip_input subtracts this */ - if (ip->ip_dst.s_addr == slirp->vhost_addr.s_addr || - ip->ip_dst.s_addr == slirp->vnameserver_addr.s_addr) { - icmp_reflect(m); - } else if (slirp->restricted) { - goto freeit; - } else { - struct socket *so; - struct sockaddr_storage addr; - so = socreate(slirp); - if (icmp_send(so, m, hlen) == 0) { - return; - } - if (udp_attach(so, AF_INET) == -1) { - DEBUG_MISC("icmp_input udp_attach errno = %d-%s", - errno,strerror(errno)); - sofree(so); - m_free(m); - goto end_error; - } - so->so_m = m; - so->so_ffamily = AF_INET; - so->so_faddr = ip->ip_dst; - so->so_fport = htons(7); - so->so_lfamily = AF_INET; - so->so_laddr = ip->ip_src; - so->so_lport = htons(9); - so->so_iptos = ip->ip_tos; - so->so_type = IPPROTO_ICMP; - so->so_state = SS_ISFCONNECTED; - - /* Send the packet */ - addr = so->fhost.ss; - sotranslate_out(so, &addr); - - if(sendto(so->s, icmp_ping_msg, strlen(icmp_ping_msg), 0, - (struct sockaddr *)&addr, sockaddr_size(&addr)) == -1) { - DEBUG_MISC("icmp_input udp sendto tx errno = %d-%s", - errno,strerror(errno)); - icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0, strerror(errno)); - udp_detach(so); - } - } /* if ip->ip_dst.s_addr == alias_addr.s_addr */ - break; - case ICMP_UNREACH: - /* XXX? report error? close socket? */ - case ICMP_TIMXCEED: - case ICMP_PARAMPROB: - case ICMP_SOURCEQUENCH: - case ICMP_TSTAMP: - case ICMP_MASKREQ: - case ICMP_REDIRECT: - m_free(m); - break; - - default: - m_free(m); - } /* swith */ - -end_error: - /* m is m_free()'d xor put in a socket xor or given to ip_send */ - return; -} - - -/* - * Send an ICMP message in response to a situation - * - * RFC 1122: 3.2.2 MUST send at least the IP header and 8 bytes of header. MAY send more (we do). - * MUST NOT change this header information. - * MUST NOT reply to a multicast/broadcast IP address. - * MUST NOT reply to a multicast/broadcast MAC address. - * MUST reply to only the first fragment. - */ -/* - * Send ICMP_UNREACH back to the source regarding msrc. - * mbuf *msrc is used as a template, but is NOT m_free()'d. - * It is reported as the bad ip packet. The header should - * be fully correct and in host byte order. - * ICMP fragmentation is illegal. All machines must accept 576 bytes in one - * packet. The maximum payload is 576-20(ip hdr)-8(icmp hdr)=548 - */ - -#define ICMP_MAXDATALEN (IP_MSS-28) -void -icmp_send_error(struct mbuf *msrc, uint8_t type, uint8_t code, int minsize, - const char *message) -{ - unsigned hlen, shlen, s_ip_len; - register struct ip *ip; - register struct icmp *icp; - register struct mbuf *m; - - DEBUG_CALL("icmp_send_error"); - DEBUG_ARG("msrc = %p", msrc); - DEBUG_ARG("msrc_len = %d", msrc->m_len); - - if(type!=ICMP_UNREACH && type!=ICMP_TIMXCEED) goto end_error; - - /* check msrc */ - if(!msrc) goto end_error; - ip = mtod(msrc, struct ip *); - if (slirp_debug & DBG_MISC) { - char bufa[20], bufb[20]; - strcpy(bufa, inet_ntoa(ip->ip_src)); - strcpy(bufb, inet_ntoa(ip->ip_dst)); - DEBUG_MISC(" %.16s to %.16s", bufa, bufb); - } - if(ip->ip_off & IP_OFFMASK) goto end_error; /* Only reply to fragment 0 */ - - /* Do not reply to source-only IPs */ - if ((ip->ip_src.s_addr & htonl(~(0xf << 28))) == 0) { - goto end_error; - } - - shlen=ip->ip_hl << 2; - s_ip_len=ip->ip_len; - if(ip->ip_p == IPPROTO_ICMP) { - icp = (struct icmp *)((char *)ip + shlen); - /* - * Assume any unknown ICMP type is an error. This isn't - * specified by the RFC, but think about it.. - */ - if(icp->icmp_type>18 || icmp_flush[icp->icmp_type]) goto end_error; - } - - /* make a copy */ - m = m_get(msrc->slirp); - if (!m) { - goto end_error; - } - - { int new_m_size; - new_m_size=sizeof(struct ip )+ICMP_MINLEN+msrc->m_len+ICMP_MAXDATALEN; - if(new_m_size>m->m_size) m_inc(m, new_m_size); - } - memcpy(m->m_data, msrc->m_data, msrc->m_len); - m->m_len = msrc->m_len; /* copy msrc to m */ - - /* make the header of the reply packet */ - ip = mtod(m, struct ip *); - hlen= sizeof(struct ip ); /* no options in reply */ - - /* fill in icmp */ - m->m_data += hlen; - m->m_len -= hlen; - - icp = mtod(m, struct icmp *); - - if(minsize) s_ip_len=shlen+ICMP_MINLEN; /* return header+8b only */ - else if(s_ip_len>ICMP_MAXDATALEN) /* maximum size */ - s_ip_len=ICMP_MAXDATALEN; - - m->m_len=ICMP_MINLEN+s_ip_len; /* 8 bytes ICMP header */ - - /* min. size = 8+sizeof(struct ip)+8 */ - - icp->icmp_type = type; - icp->icmp_code = code; - icp->icmp_id = 0; - icp->icmp_seq = 0; - - memcpy(&icp->icmp_ip, msrc->m_data, s_ip_len); /* report the ip packet */ - HTONS(icp->icmp_ip.ip_len); - HTONS(icp->icmp_ip.ip_id); - HTONS(icp->icmp_ip.ip_off); - - if (message && WITH_ICMP_ERROR_MSG) { /* append message to ICMP packet */ - int message_len; - char *cpnt; - message_len=strlen(message); - if(message_len>ICMP_MAXDATALEN) message_len=ICMP_MAXDATALEN; - cpnt=(char *)m->m_data+m->m_len; - memcpy(cpnt, message, message_len); - m->m_len+=message_len; - } - - icp->icmp_cksum = 0; - icp->icmp_cksum = cksum(m, m->m_len); - - m->m_data -= hlen; - m->m_len += hlen; - - /* fill in ip */ - ip->ip_hl = hlen >> 2; - ip->ip_len = m->m_len; - - ip->ip_tos=((ip->ip_tos & 0x1E) | 0xC0); /* high priority for errors */ - - ip->ip_ttl = MAXTTL; - ip->ip_p = IPPROTO_ICMP; - ip->ip_dst = ip->ip_src; /* ip addresses */ - ip->ip_src = m->slirp->vhost_addr; - - (void ) ip_output((struct socket *)NULL, m); - -end_error: - return; -} -#undef ICMP_MAXDATALEN - -/* - * Reflect the ip packet back to the source - */ -void -icmp_reflect(struct mbuf *m) -{ - register struct ip *ip = mtod(m, struct ip *); - int hlen = ip->ip_hl << 2; - int optlen = hlen - sizeof(struct ip ); - register struct icmp *icp; - - /* - * Send an icmp packet back to the ip level, - * after supplying a checksum. - */ - m->m_data += hlen; - m->m_len -= hlen; - icp = mtod(m, struct icmp *); - - icp->icmp_type = ICMP_ECHOREPLY; - icp->icmp_cksum = 0; - icp->icmp_cksum = cksum(m, ip->ip_len - hlen); - - m->m_data -= hlen; - m->m_len += hlen; - - /* fill in ip */ - if (optlen > 0) { - /* - * Strip out original options by copying rest of first - * mbuf's data back, and adjust the IP length. - */ - memmove((char *)(ip + 1), (char *)ip + hlen, - (unsigned )(m->m_len - hlen)); - hlen -= optlen; - ip->ip_hl = hlen >> 2; - ip->ip_len -= optlen; - m->m_len -= optlen; - } - - ip->ip_ttl = MAXTTL; - { /* swap */ - struct in_addr icmp_dst; - icmp_dst = ip->ip_dst; - ip->ip_dst = ip->ip_src; - ip->ip_src = icmp_dst; - } - - (void ) ip_output((struct socket *)NULL, m); -} - -void icmp_receive(struct socket *so) -{ - struct mbuf *m = so->so_m; - struct ip *ip = mtod(m, struct ip *); - int hlen = ip->ip_hl << 2; - uint8_t error_code; - struct icmp *icp; - int id, len; - - m->m_data += hlen; - m->m_len -= hlen; - icp = mtod(m, struct icmp *); - - id = icp->icmp_id; - len = recv(so->s, icp, M_ROOM(m), 0); - /* - * The behavior of reading SOCK_DGRAM+IPPROTO_ICMP sockets is inconsistent - * between host OSes. On Linux, only the ICMP header and payload is - * included. On macOS/Darwin, the socket acts like a raw socket and - * includes the IP header as well. On other BSDs, SOCK_DGRAM+IPPROTO_ICMP - * sockets aren't supported at all, so we treat them like raw sockets. It - * isn't possible to detect this difference at runtime, so we must use an - * #ifdef to determine if we need to remove the IP header. - */ -#ifdef CONFIG_BSD - if (len >= sizeof(struct ip)) { - struct ip *inner_ip = mtod(m, struct ip *); - int inner_hlen = inner_ip->ip_hl << 2; - if (inner_hlen > len) { - len = -1; - errno = -EINVAL; - } else { - len -= inner_hlen; - memmove(icp, (unsigned char *)icp + inner_hlen, len); - } - } else { - len = -1; - errno = -EINVAL; - } -#endif - icp->icmp_id = id; - - m->m_data -= hlen; - m->m_len += hlen; - - if (len == -1 || len == 0) { - if (errno == ENETUNREACH) { - error_code = ICMP_UNREACH_NET; - } else { - error_code = ICMP_UNREACH_HOST; - } - DEBUG_MISC(" udp icmp rx errno = %d-%s", errno, - strerror(errno)); - icmp_send_error(so->so_m, ICMP_UNREACH, error_code, 0, strerror(errno)); - } else { - icmp_reflect(so->so_m); - so->so_m = NULL; /* Don't m_free() it again! */ - } - icmp_detach(so); -} diff --git a/slirp/src/ip_icmp.h b/slirp/src/ip_icmp.h deleted file mode 100644 index 05d85c59dd..0000000000 --- a/slirp/src/ip_icmp.h +++ /dev/null @@ -1,166 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 - * ip_icmp.h,v 1.4 1995/05/30 08:09:43 rgrimes Exp - */ - -#ifndef NETINET_IP_ICMP_H -#define NETINET_IP_ICMP_H - -/* - * Interface Control Message Protocol Definitions. - * Per RFC 792, September 1981. - */ - -typedef uint32_t n_time; - -/* - * Structure of an icmp header. - */ -struct icmp { - uint8_t icmp_type; /* type of message, see below */ - uint8_t icmp_code; /* type sub code */ - uint16_t icmp_cksum; /* ones complement cksum of struct */ - union { - uint8_t ih_pptr; /* ICMP_PARAMPROB */ - struct in_addr ih_gwaddr; /* ICMP_REDIRECT */ - struct ih_idseq { - uint16_t icd_id; - uint16_t icd_seq; - } ih_idseq; - int ih_void; - - /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */ - struct ih_pmtu { - uint16_t ipm_void; - uint16_t ipm_nextmtu; - } ih_pmtu; - } icmp_hun; -#define icmp_pptr icmp_hun.ih_pptr -#define icmp_gwaddr icmp_hun.ih_gwaddr -#define icmp_id icmp_hun.ih_idseq.icd_id -#define icmp_seq icmp_hun.ih_idseq.icd_seq -#define icmp_void icmp_hun.ih_void -#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void -#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu - union { - struct id_ts { - n_time its_otime; - n_time its_rtime; - n_time its_ttime; - } id_ts; - struct id_ip { - struct ip idi_ip; - /* options and then 64 bits of data */ - } id_ip; - uint32_t id_mask; - char id_data[1]; - } icmp_dun; -#define icmp_otime icmp_dun.id_ts.its_otime -#define icmp_rtime icmp_dun.id_ts.its_rtime -#define icmp_ttime icmp_dun.id_ts.its_ttime -#define icmp_ip icmp_dun.id_ip.idi_ip -#define icmp_mask icmp_dun.id_mask -#define icmp_data icmp_dun.id_data -}; - -/* - * Lower bounds on packet lengths for various types. - * For the error advice packets must first ensure that the - * packet is large enough to contain the returned ip header. - * Only then can we do the check to see if 64 bits of packet - * data have been returned, since we need to check the returned - * ip header length. - */ -#define ICMP_MINLEN 8 /* abs minimum */ -#define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */ -#define ICMP_MASKLEN 12 /* address mask */ -#define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */ -#define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) - /* N.B.: must separately check that ip_hl >= 5 */ - -/* - * Definition of type and code field values. - */ -#define ICMP_ECHOREPLY 0 /* echo reply */ -#define ICMP_UNREACH 3 /* dest unreachable, codes: */ -#define ICMP_UNREACH_NET 0 /* bad net */ -#define ICMP_UNREACH_HOST 1 /* bad host */ -#define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */ -#define ICMP_UNREACH_PORT 3 /* bad port */ -#define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */ -#define ICMP_UNREACH_SRCFAIL 5 /* src route failed */ -#define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */ -#define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */ -#define ICMP_UNREACH_ISOLATED 8 /* src host isolated */ -#define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */ -#define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */ -#define ICMP_UNREACH_TOSNET 11 /* bad tos for net */ -#define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */ -#define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */ -#define ICMP_REDIRECT 5 /* shorter route, codes: */ -#define ICMP_REDIRECT_NET 0 /* for network */ -#define ICMP_REDIRECT_HOST 1 /* for host */ -#define ICMP_REDIRECT_TOSNET 2 /* for tos and net */ -#define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */ -#define ICMP_ECHO 8 /* echo service */ -#define ICMP_ROUTERADVERT 9 /* router advertisement */ -#define ICMP_ROUTERSOLICIT 10 /* router solicitation */ -#define ICMP_TIMXCEED 11 /* time exceeded, code: */ -#define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */ -#define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */ -#define ICMP_PARAMPROB 12 /* ip header bad */ -#define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */ -#define ICMP_TSTAMP 13 /* timestamp request */ -#define ICMP_TSTAMPREPLY 14 /* timestamp reply */ -#define ICMP_IREQ 15 /* information request */ -#define ICMP_IREQREPLY 16 /* information reply */ -#define ICMP_MASKREQ 17 /* address mask request */ -#define ICMP_MASKREPLY 18 /* address mask reply */ - -#define ICMP_MAXTYPE 18 - -#define ICMP_INFOTYPE(type) \ - ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \ - (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \ - (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \ - (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \ - (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY) - -void icmp_init(Slirp *slirp); -void icmp_cleanup(Slirp *slirp); -void icmp_input(struct mbuf *, int); -void icmp_send_error(struct mbuf *msrc, uint8_t type, uint8_t code, int minsize, - const char *message); -void icmp_reflect(struct mbuf *); -void icmp_receive(struct socket *so); -void icmp_detach(struct socket *so); - -#endif diff --git a/slirp/src/ip_input.c b/slirp/src/ip_input.c deleted file mode 100644 index a714fecd58..0000000000 --- a/slirp/src/ip_input.c +++ /dev/null @@ -1,469 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1988, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)ip_input.c 8.2 (Berkeley) 1/4/94 - * ip_input.c,v 1.11 1994/11/16 10:17:08 jkh Exp - */ - -/* - * Changes and additions relating to SLiRP are - * Copyright (c) 1995 Danny Gasparovski. - */ - -#include "slirp.h" -#include "ip_icmp.h" - -static struct ip *ip_reass(Slirp *slirp, struct ip *ip, struct ipq *fp); -static void ip_freef(Slirp *slirp, struct ipq *fp); -static void ip_enq(register struct ipasfrag *p, - register struct ipasfrag *prev); -static void ip_deq(register struct ipasfrag *p); - -/* - * IP initialization: fill in IP protocol switch table. - * All protocols not implemented in kernel go to raw IP protocol handler. - */ -void -ip_init(Slirp *slirp) -{ - slirp->ipq.ip_link.next = slirp->ipq.ip_link.prev = &slirp->ipq.ip_link; - udp_init(slirp); - tcp_init(slirp); - icmp_init(slirp); -} - -void ip_cleanup(Slirp *slirp) -{ - udp_cleanup(slirp); - tcp_cleanup(slirp); - icmp_cleanup(slirp); -} - -/* - * Ip input routine. Checksum and byte swap header. If fragmented - * try to reassemble. Process options. Pass to next level. - */ -void -ip_input(struct mbuf *m) -{ - Slirp *slirp = m->slirp; - register struct ip *ip; - int hlen; - - if (!slirp->in_enabled) { - goto bad; - } - - DEBUG_CALL("ip_input"); - DEBUG_ARG("m = %p", m); - DEBUG_ARG("m_len = %d", m->m_len); - - if (m->m_len < sizeof (struct ip)) { - goto bad; - } - - ip = mtod(m, struct ip *); - - if (ip->ip_v != IPVERSION) { - goto bad; - } - - hlen = ip->ip_hl << 2; - if (hlen<sizeof(struct ip ) || hlen>m->m_len) {/* min header length */ - goto bad; /* or packet too short */ - } - - /* keep ip header intact for ICMP reply - * ip->ip_sum = cksum(m, hlen); - * if (ip->ip_sum) { - */ - if(cksum(m,hlen)) { - goto bad; - } - - /* - * Convert fields to host representation. - */ - NTOHS(ip->ip_len); - if (ip->ip_len < hlen) { - goto bad; - } - NTOHS(ip->ip_id); - NTOHS(ip->ip_off); - - /* - * Check that the amount of data in the buffers - * is as at least much as the IP header would have us expect. - * Trim mbufs if longer than we expect. - * Drop packet if shorter than we expect. - */ - if (m->m_len < ip->ip_len) { - goto bad; - } - - /* Should drop packet if mbuf too long? hmmm... */ - if (m->m_len > ip->ip_len) - m_adj(m, ip->ip_len - m->m_len); - - /* check ip_ttl for a correct ICMP reply */ - if (ip->ip_ttl == 0) { - icmp_send_error(m, ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS, 0, "ttl"); - goto bad; - } - - /* - * If offset or IP_MF are set, must reassemble. - * Otherwise, nothing need be done. - * (We could look in the reassembly queue to see - * if the packet was previously fragmented, - * but it's not worth the time; just let them time out.) - * - * XXX This should fail, don't fragment yet - */ - if (ip->ip_off &~ IP_DF) { - register struct ipq *fp; - struct qlink *l; - /* - * Look for queue of fragments - * of this datagram. - */ - for (l = slirp->ipq.ip_link.next; l != &slirp->ipq.ip_link; - l = l->next) { - fp = container_of(l, struct ipq, ip_link); - if (ip->ip_id == fp->ipq_id && - ip->ip_src.s_addr == fp->ipq_src.s_addr && - ip->ip_dst.s_addr == fp->ipq_dst.s_addr && - ip->ip_p == fp->ipq_p) - goto found; - } - fp = NULL; - found: - - /* - * Adjust ip_len to not reflect header, - * set ip_mff if more fragments are expected, - * convert offset of this to bytes. - */ - ip->ip_len -= hlen; - if (ip->ip_off & IP_MF) - ip->ip_tos |= 1; - else - ip->ip_tos &= ~1; - - ip->ip_off <<= 3; - - /* - * If datagram marked as having more fragments - * or if this is not the first fragment, - * attempt reassembly; if it succeeds, proceed. - */ - if (ip->ip_tos & 1 || ip->ip_off) { - ip = ip_reass(slirp, ip, fp); - if (ip == NULL) - return; - m = dtom(slirp, ip); - } else - if (fp) - ip_freef(slirp, fp); - - } else - ip->ip_len -= hlen; - - /* - * Switch out to protocol's input routine. - */ - switch (ip->ip_p) { - case IPPROTO_TCP: - tcp_input(m, hlen, (struct socket *)NULL, AF_INET); - break; - case IPPROTO_UDP: - udp_input(m, hlen); - break; - case IPPROTO_ICMP: - icmp_input(m, hlen); - break; - default: - m_free(m); - } - return; -bad: - m_free(m); -} - -#define iptofrag(P) ((struct ipasfrag *)(((char*)(P)) - sizeof(struct qlink))) -#define fragtoip(P) ((struct ip*)(((char*)(P)) + sizeof(struct qlink))) -/* - * Take incoming datagram fragment and try to - * reassemble it into whole datagram. If a chain for - * reassembly of this datagram already exists, then it - * is given as fp; otherwise have to make a chain. - */ -static struct ip * -ip_reass(Slirp *slirp, struct ip *ip, struct ipq *fp) -{ - register struct mbuf *m = dtom(slirp, ip); - register struct ipasfrag *q; - int hlen = ip->ip_hl << 2; - int i, next; - - DEBUG_CALL("ip_reass"); - DEBUG_ARG("ip = %p", ip); - DEBUG_ARG("fp = %p", fp); - DEBUG_ARG("m = %p", m); - - /* - * Presence of header sizes in mbufs - * would confuse code below. - * Fragment m_data is concatenated. - */ - m->m_data += hlen; - m->m_len -= hlen; - - /* - * If first fragment to arrive, create a reassembly queue. - */ - if (fp == NULL) { - struct mbuf *t = m_get(slirp); - - if (t == NULL) { - goto dropfrag; - } - fp = mtod(t, struct ipq *); - insque(&fp->ip_link, &slirp->ipq.ip_link); - fp->ipq_ttl = IPFRAGTTL; - fp->ipq_p = ip->ip_p; - fp->ipq_id = ip->ip_id; - fp->frag_link.next = fp->frag_link.prev = &fp->frag_link; - fp->ipq_src = ip->ip_src; - fp->ipq_dst = ip->ip_dst; - q = (struct ipasfrag *)fp; - goto insert; - } - - /* - * Find a segment which begins after this one does. - */ - for (q = fp->frag_link.next; q != (struct ipasfrag *)&fp->frag_link; - q = q->ipf_next) - if (q->ipf_off > ip->ip_off) - break; - - /* - * If there is a preceding segment, it may provide some of - * our data already. If so, drop the data from the incoming - * segment. If it provides all of our data, drop us. - */ - if (q->ipf_prev != &fp->frag_link) { - struct ipasfrag *pq = q->ipf_prev; - i = pq->ipf_off + pq->ipf_len - ip->ip_off; - if (i > 0) { - if (i >= ip->ip_len) - goto dropfrag; - m_adj(dtom(slirp, ip), i); - ip->ip_off += i; - ip->ip_len -= i; - } - } - - /* - * While we overlap succeeding segments trim them or, - * if they are completely covered, dequeue them. - */ - while (q != (struct ipasfrag*)&fp->frag_link && - ip->ip_off + ip->ip_len > q->ipf_off) { - i = (ip->ip_off + ip->ip_len) - q->ipf_off; - if (i < q->ipf_len) { - q->ipf_len -= i; - q->ipf_off += i; - m_adj(dtom(slirp, q), i); - break; - } - q = q->ipf_next; - m_free(dtom(slirp, q->ipf_prev)); - ip_deq(q->ipf_prev); - } - -insert: - /* - * Stick new segment in its place; - * check for complete reassembly. - */ - ip_enq(iptofrag(ip), q->ipf_prev); - next = 0; - for (q = fp->frag_link.next; q != (struct ipasfrag*)&fp->frag_link; - q = q->ipf_next) { - if (q->ipf_off != next) - return NULL; - next += q->ipf_len; - } - if (((struct ipasfrag *)(q->ipf_prev))->ipf_tos & 1) - return NULL; - - /* - * Reassembly is complete; concatenate fragments. - */ - q = fp->frag_link.next; - m = dtom(slirp, q); - - q = (struct ipasfrag *) q->ipf_next; - while (q != (struct ipasfrag*)&fp->frag_link) { - struct mbuf *t = dtom(slirp, q); - q = (struct ipasfrag *) q->ipf_next; - m_cat(m, t); - } - - /* - * Create header for new ip packet by - * modifying header of first packet; - * dequeue and discard fragment reassembly header. - * Make header visible. - */ - q = fp->frag_link.next; - - /* - * If the fragments concatenated to an mbuf that's - * bigger than the total size of the fragment, then and - * m_ext buffer was alloced. But fp->ipq_next points to - * the old buffer (in the mbuf), so we must point ip - * into the new buffer. - */ - if (m->m_flags & M_EXT) { - int delta = (char *)q - m->m_dat; - q = (struct ipasfrag *)(m->m_ext + delta); - } - - ip = fragtoip(q); - ip->ip_len = next; - ip->ip_tos &= ~1; - ip->ip_src = fp->ipq_src; - ip->ip_dst = fp->ipq_dst; - remque(&fp->ip_link); - (void) m_free(dtom(slirp, fp)); - m->m_len += (ip->ip_hl << 2); - m->m_data -= (ip->ip_hl << 2); - - return ip; - -dropfrag: - m_free(m); - return NULL; -} - -/* - * Free a fragment reassembly header and all - * associated datagrams. - */ -static void -ip_freef(Slirp *slirp, struct ipq *fp) -{ - register struct ipasfrag *q, *p; - - for (q = fp->frag_link.next; q != (struct ipasfrag*)&fp->frag_link; q = p) { - p = q->ipf_next; - ip_deq(q); - m_free(dtom(slirp, q)); - } - remque(&fp->ip_link); - (void) m_free(dtom(slirp, fp)); -} - -/* - * Put an ip fragment on a reassembly chain. - * Like insque, but pointers in middle of structure. - */ -static void -ip_enq(register struct ipasfrag *p, register struct ipasfrag *prev) -{ - DEBUG_CALL("ip_enq"); - DEBUG_ARG("prev = %p", prev); - p->ipf_prev = prev; - p->ipf_next = prev->ipf_next; - ((struct ipasfrag *)(prev->ipf_next))->ipf_prev = p; - prev->ipf_next = p; -} - -/* - * To ip_enq as remque is to insque. - */ -static void -ip_deq(register struct ipasfrag *p) -{ - ((struct ipasfrag *)(p->ipf_prev))->ipf_next = p->ipf_next; - ((struct ipasfrag *)(p->ipf_next))->ipf_prev = p->ipf_prev; -} - -/* - * IP timer processing; - * if a timer expires on a reassembly - * queue, discard it. - */ -void -ip_slowtimo(Slirp *slirp) -{ - struct qlink *l; - - DEBUG_CALL("ip_slowtimo"); - - l = slirp->ipq.ip_link.next; - - if (l == NULL) - return; - - while (l != &slirp->ipq.ip_link) { - struct ipq *fp = container_of(l, struct ipq, ip_link); - l = l->next; - if (--fp->ipq_ttl == 0) { - ip_freef(slirp, fp); - } - } -} - -/* - * Strip out IP options, at higher - * level protocol in the kernel. - * Second argument is buffer to which options - * will be moved, and return value is their length. - * (XXX) should be deleted; last arg currently ignored. - */ -void -ip_stripoptions(register struct mbuf *m, struct mbuf *mopt) -{ - register int i; - struct ip *ip = mtod(m, struct ip *); - register char *opts; - int olen; - - olen = (ip->ip_hl<<2) - sizeof (struct ip); - opts = (char *)(ip + 1); - i = m->m_len - (sizeof (struct ip) + olen); - memcpy(opts, opts + olen, (unsigned)i); - m->m_len -= olen; - - ip->ip_hl = sizeof(struct ip) >> 2; -} diff --git a/slirp/src/ip_output.c b/slirp/src/ip_output.c deleted file mode 100644 index 8560197cf6..0000000000 --- a/slirp/src/ip_output.c +++ /dev/null @@ -1,170 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1988, 1990, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)ip_output.c 8.3 (Berkeley) 1/21/94 - * ip_output.c,v 1.9 1994/11/16 10:17:10 jkh Exp - */ - -/* - * Changes and additions relating to SLiRP are - * Copyright (c) 1995 Danny Gasparovski. - */ - -#include "slirp.h" - -/* Number of packets queued before we start sending - * (to prevent allocing too many mbufs) */ -#define IF_THRESH 10 - -/* - * IP output. The packet in mbuf chain m contains a skeletal IP - * header (with len, off, ttl, proto, tos, src, dst). - * The mbuf chain containing the packet will be freed. - * The mbuf opt, if present, will not be freed. - */ -int -ip_output(struct socket *so, struct mbuf *m0) -{ - Slirp *slirp = m0->slirp; - register struct ip *ip; - register struct mbuf *m = m0; - register int hlen = sizeof(struct ip ); - int len, off, error = 0; - - DEBUG_CALL("ip_output"); - DEBUG_ARG("so = %p", so); - DEBUG_ARG("m0 = %p", m0); - - ip = mtod(m, struct ip *); - /* - * Fill in IP header. - */ - ip->ip_v = IPVERSION; - ip->ip_off &= IP_DF; - ip->ip_id = htons(slirp->ip_id++); - ip->ip_hl = hlen >> 2; - - /* - * If small enough for interface, can just send directly. - */ - if ((uint16_t)ip->ip_len <= IF_MTU) { - ip->ip_len = htons((uint16_t)ip->ip_len); - ip->ip_off = htons((uint16_t)ip->ip_off); - ip->ip_sum = 0; - ip->ip_sum = cksum(m, hlen); - - if_output(so, m); - goto done; - } - - /* - * Too large for interface; fragment if possible. - * Must be able to put at least 8 bytes per fragment. - */ - if (ip->ip_off & IP_DF) { - error = -1; - goto bad; - } - - len = (IF_MTU - hlen) &~ 7; /* ip databytes per packet */ - if (len < 8) { - error = -1; - goto bad; - } - - { - int mhlen, firstlen = len; - struct mbuf **mnext = &m->m_nextpkt; - - /* - * Loop through length of segment after first fragment, - * make new header and copy data of each part and link onto chain. - */ - m0 = m; - mhlen = sizeof (struct ip); - for (off = hlen + len; off < (uint16_t)ip->ip_len; off += len) { - register struct ip *mhip; - m = m_get(slirp); - if (m == NULL) { - error = -1; - goto sendorfree; - } - m->m_data += IF_MAXLINKHDR; - mhip = mtod(m, struct ip *); - *mhip = *ip; - - m->m_len = mhlen; - mhip->ip_off = ((off - hlen) >> 3) + (ip->ip_off & ~IP_MF); - if (ip->ip_off & IP_MF) - mhip->ip_off |= IP_MF; - if (off + len >= (uint16_t)ip->ip_len) - len = (uint16_t)ip->ip_len - off; - else - mhip->ip_off |= IP_MF; - mhip->ip_len = htons((uint16_t)(len + mhlen)); - - if (m_copy(m, m0, off, len) < 0) { - error = -1; - goto sendorfree; - } - - mhip->ip_off = htons((uint16_t)mhip->ip_off); - mhip->ip_sum = 0; - mhip->ip_sum = cksum(m, mhlen); - *mnext = m; - mnext = &m->m_nextpkt; - } - /* - * Update first fragment by trimming what's been copied out - * and updating header, then send each fragment (in order). - */ - m = m0; - m_adj(m, hlen + firstlen - (uint16_t)ip->ip_len); - ip->ip_len = htons((uint16_t)m->m_len); - ip->ip_off = htons((uint16_t)(ip->ip_off | IP_MF)); - ip->ip_sum = 0; - ip->ip_sum = cksum(m, hlen); -sendorfree: - for (m = m0; m; m = m0) { - m0 = m->m_nextpkt; - m->m_nextpkt = NULL; - if (error == 0) - if_output(so, m); - else - m_free(m); - } - } - -done: - return (error); - -bad: - m_free(m0); - goto done; -} diff --git a/slirp/src/libslirp.h b/slirp/src/libslirp.h deleted file mode 100644 index 3b28764bec..0000000000 --- a/slirp/src/libslirp.h +++ /dev/null @@ -1,118 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -#ifndef LIBSLIRP_H -#define LIBSLIRP_H - -#include <stdint.h> -#include <stdbool.h> -#include <sys/types.h> - -#ifdef _WIN32 -#include <winsock2.h> -#include <in6addr.h> -#else -#include <netinet/in.h> -#include <arpa/inet.h> -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -typedef struct Slirp Slirp; - -enum { - SLIRP_POLL_IN = 1 << 0, - SLIRP_POLL_OUT = 1 << 1, - SLIRP_POLL_PRI = 1 << 2, - SLIRP_POLL_ERR = 1 << 3, - SLIRP_POLL_HUP = 1 << 4, -}; - -typedef ssize_t (*SlirpReadCb)(void *buf, size_t len, void *opaque); -typedef ssize_t (*SlirpWriteCb)(const void *buf, size_t len, void *opaque); -typedef void (*SlirpTimerCb)(void *opaque); -typedef int (*SlirpAddPollCb)(int fd, int events, void *opaque); -typedef int (*SlirpGetREventsCb)(int idx, void *opaque); - -/* - * Callbacks from slirp - */ -typedef struct SlirpCb { - /* - * Send an ethernet frame to the guest network. The opaque - * parameter is the one given to slirp_init(). The function - * doesn't need to send all the data and may return <len (no - * buffering is done on libslirp side, so the data will be dropped - * in this case). <0 reports an IO error. - */ - SlirpWriteCb send_packet; - /* Print a message for an error due to guest misbehavior. */ - void (*guest_error)(const char *msg, void *opaque); - /* Return the virtual clock value in nanoseconds */ - int64_t (*clock_get_ns)(void *opaque); - /* Create a new timer with the given callback and opaque data */ - void *(*timer_new)(SlirpTimerCb cb, void *cb_opaque, void *opaque); - /* Remove and free a timer */ - void (*timer_free)(void *timer, void *opaque); - /* Modify a timer to expire at @expire_time */ - void (*timer_mod)(void *timer, int64_t expire_time, void *opaque); - /* Register a fd for future polling */ - void (*register_poll_fd)(int fd, void *opaque); - /* Unregister a fd */ - void (*unregister_poll_fd)(int fd, void *opaque); - /* Kick the io-thread, to signal that new events may be processed */ - void (*notify)(void *opaque); -} SlirpCb; - - -Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork, - struct in_addr vnetmask, struct in_addr vhost, - bool in6_enabled, - struct in6_addr vprefix_addr6, uint8_t vprefix_len, - struct in6_addr vhost6, const char *vhostname, - const char *tftp_server_name, - const char *tftp_path, const char *bootfile, - struct in_addr vdhcp_start, struct in_addr vnameserver, - struct in6_addr vnameserver6, const char **vdnssearch, - const char *vdomainname, - const SlirpCb *callbacks, - void *opaque); -void slirp_cleanup(Slirp *slirp); - -void slirp_pollfds_fill(Slirp *slirp, uint32_t *timeout, - SlirpAddPollCb add_poll, void *opaque); - -void slirp_pollfds_poll(Slirp *slirp, int select_error, - SlirpGetREventsCb get_revents, void *opaque); - -void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len); - -int slirp_add_hostfwd(Slirp *slirp, int is_udp, - struct in_addr host_addr, int host_port, - struct in_addr guest_addr, int guest_port); -int slirp_remove_hostfwd(Slirp *slirp, int is_udp, - struct in_addr host_addr, int host_port); -int slirp_add_exec(Slirp *slirp, const char *cmdline, - struct in_addr *guest_addr, int guest_port); -int slirp_add_guestfwd(Slirp *slirp, SlirpWriteCb write_cb, void *opaque, - struct in_addr *guest_addr, int guest_port); - -char *slirp_connection_info(Slirp *slirp); - -void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, - int guest_port, const uint8_t *buf, int size); -size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr, - int guest_port); - -void slirp_state_save(Slirp *s, SlirpWriteCb write_cb, void *opaque); - -int slirp_state_load(Slirp *s, int version_id, - SlirpReadCb read_cb, void *opaque); - -int slirp_state_version(void); - -#ifdef __cplusplus -} /* extern "C" */ -#endif - -#endif /* LIBSLIRP_H */ diff --git a/slirp/src/main.h b/slirp/src/main.h deleted file mode 100644 index 3b3f883703..0000000000 --- a/slirp/src/main.h +++ /dev/null @@ -1,16 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1995 Danny Gasparovski. - */ - -#ifndef SLIRP_MAIN_H -#define SLIRP_MAIN_H - -extern unsigned curtime; -extern struct in_addr loopback_addr; -extern unsigned long loopback_mask; - -int if_encap(Slirp *slirp, struct mbuf *ifm); -ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags); - -#endif diff --git a/slirp/src/mbuf.c b/slirp/src/mbuf.c deleted file mode 100644 index 800406ca9e..0000000000 --- a/slirp/src/mbuf.c +++ /dev/null @@ -1,235 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1995 Danny Gasparovski - */ - -/* - * mbuf's in SLiRP are much simpler than the real mbufs in - * FreeBSD. They are fixed size, determined by the MTU, - * so that one whole packet can fit. Mbuf's cannot be - * chained together. If there's more data than the mbuf - * could hold, an external g_malloced buffer is pointed to - * by m_ext (and the data pointers) and M_EXT is set in - * the flags - */ - -#include "slirp.h" - -#define MBUF_THRESH 30 - -/* - * Find a nice value for msize - */ -#define SLIRP_MSIZE\ - (offsetof(struct mbuf, m_dat) + IF_MAXLINKHDR + TCPIPHDR_DELTA + IF_MTU) - -void -m_init(Slirp *slirp) -{ - slirp->m_freelist.qh_link = slirp->m_freelist.qh_rlink = &slirp->m_freelist; - slirp->m_usedlist.qh_link = slirp->m_usedlist.qh_rlink = &slirp->m_usedlist; -} - -void m_cleanup(Slirp *slirp) -{ - struct mbuf *m, *next; - - m = (struct mbuf *) slirp->m_usedlist.qh_link; - while ((struct quehead *) m != &slirp->m_usedlist) { - next = m->m_next; - if (m->m_flags & M_EXT) { - g_free(m->m_ext); - } - g_free(m); - m = next; - } - m = (struct mbuf *) slirp->m_freelist.qh_link; - while ((struct quehead *) m != &slirp->m_freelist) { - next = m->m_next; - g_free(m); - m = next; - } -} - -/* - * Get an mbuf from the free list, if there are none - * allocate one - * - * Because fragmentation can occur if we alloc new mbufs and - * free old mbufs, we mark all mbufs above mbuf_thresh as M_DOFREE, - * which tells m_free to actually g_free() it - */ -struct mbuf * -m_get(Slirp *slirp) -{ - register struct mbuf *m; - int flags = 0; - - DEBUG_CALL("m_get"); - - if (slirp->m_freelist.qh_link == &slirp->m_freelist) { - m = g_malloc(SLIRP_MSIZE); - slirp->mbuf_alloced++; - if (slirp->mbuf_alloced > MBUF_THRESH) - flags = M_DOFREE; - m->slirp = slirp; - } else { - m = (struct mbuf *) slirp->m_freelist.qh_link; - remque(m); - } - - /* Insert it in the used list */ - insque(m,&slirp->m_usedlist); - m->m_flags = (flags | M_USEDLIST); - - /* Initialise it */ - m->m_size = SLIRP_MSIZE - offsetof(struct mbuf, m_dat); - m->m_data = m->m_dat; - m->m_len = 0; - m->m_nextpkt = NULL; - m->m_prevpkt = NULL; - m->resolution_requested = false; - m->expiration_date = (uint64_t)-1; - DEBUG_ARG("m = %p", m); - return m; -} - -void -m_free(struct mbuf *m) -{ - - DEBUG_CALL("m_free"); - DEBUG_ARG("m = %p", m); - - if(m) { - /* Remove from m_usedlist */ - if (m->m_flags & M_USEDLIST) - remque(m); - - /* If it's M_EXT, free() it */ - if (m->m_flags & M_EXT) { - g_free(m->m_ext); - } - /* - * Either free() it or put it on the free list - */ - if (m->m_flags & M_DOFREE) { - m->slirp->mbuf_alloced--; - g_free(m); - } else if ((m->m_flags & M_FREELIST) == 0) { - insque(m,&m->slirp->m_freelist); - m->m_flags = M_FREELIST; /* Clobber other flags */ - } - } /* if(m) */ -} - -/* - * Copy data from one mbuf to the end of - * the other.. if result is too big for one mbuf, allocate - * an M_EXT data segment - */ -void -m_cat(struct mbuf *m, struct mbuf *n) -{ - /* - * If there's no room, realloc - */ - if (M_FREEROOM(m) < n->m_len) - m_inc(m, m->m_len + n->m_len); - - memcpy(m->m_data+m->m_len, n->m_data, n->m_len); - m->m_len += n->m_len; - - m_free(n); -} - - -/* make m 'size' bytes large from m_data */ -void -m_inc(struct mbuf *m, int size) -{ - int gapsize; - - /* some compilers throw up on gotos. This one we can fake. */ - if (M_ROOM(m) > size) { - return; - } - - if (m->m_flags & M_EXT) { - gapsize = m->m_data - m->m_ext; - m->m_ext = g_realloc(m->m_ext, size + gapsize); - } else { - gapsize = m->m_data - m->m_dat; - m->m_ext = g_malloc(size + gapsize); - memcpy(m->m_ext, m->m_dat, m->m_size); - m->m_flags |= M_EXT; - } - - m->m_data = m->m_ext + gapsize; - m->m_size = size + gapsize; -} - - - -void -m_adj(struct mbuf *m, int len) -{ - if (m == NULL) - return; - if (len >= 0) { - /* Trim from head */ - m->m_data += len; - m->m_len -= len; - } else { - /* Trim from tail */ - len = -len; - m->m_len -= len; - } -} - - -/* - * Copy len bytes from m, starting off bytes into n - */ -int -m_copy(struct mbuf *n, struct mbuf *m, int off, int len) -{ - if (len > M_FREEROOM(n)) - return -1; - - memcpy((n->m_data + n->m_len), (m->m_data + off), len); - n->m_len += len; - return 0; -} - - -/* - * Given a pointer into an mbuf, return the mbuf - * XXX This is a kludge, I should eliminate the need for it - * Fortunately, it's not used often - */ -struct mbuf * -dtom(Slirp *slirp, void *dat) -{ - struct mbuf *m; - - DEBUG_CALL("dtom"); - DEBUG_ARG("dat = %p", dat); - - /* bug corrected for M_EXT buffers */ - for (m = (struct mbuf *) slirp->m_usedlist.qh_link; - (struct quehead *) m != &slirp->m_usedlist; - m = m->m_next) { - if (m->m_flags & M_EXT) { - if( (char *)dat>=m->m_ext && (char *)dat<(m->m_ext + m->m_size) ) - return m; - } else { - if( (char *)dat >= m->m_dat && (char *)dat<(m->m_dat + m->m_size) ) - return m; - } - } - - DEBUG_ERROR("dtom failed"); - - return (struct mbuf *)0; -} diff --git a/slirp/src/mbuf.h b/slirp/src/mbuf.h deleted file mode 100644 index 732c85c63c..0000000000 --- a/slirp/src/mbuf.h +++ /dev/null @@ -1,127 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1988, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)mbuf.h 8.3 (Berkeley) 1/21/94 - * mbuf.h,v 1.9 1994/11/14 13:54:20 bde Exp - */ - -#ifndef MBUF_H -#define MBUF_H - -/* - * Macros for type conversion - * mtod(m,t) - convert mbuf pointer to data pointer of correct type - */ -#define mtod(m,t) ((t)(m)->m_data) - -/* XXX About mbufs for slirp: - * Only one mbuf is ever used in a chain, for each "cell" of data. - * m_nextpkt points to the next packet, if fragmented. - * If the data is too large, the M_EXT is used, and a larger block - * is alloced. Therefore, m_free[m] must check for M_EXT and if set - * free the m_ext. This is inefficient memory-wise, but who cares. - */ - -/* - * mbufs allow to have a gap between the start of the allocated buffer (m_ext if - * M_EXT is set, m_dat otherwise) and the in-use data: - * - * |--gapsize----->|---m_len-------> - * |----------m_size------------------------------> - * |----M_ROOM--------------------> - * |-M_FREEROOM--> - * - * ^ ^ ^ - * m_dat/m_ext m_data end of buffer - */ - -/* - * How much room is in the mbuf, from m_data to the end of the mbuf - */ -#define M_ROOM(m) ((m->m_flags & M_EXT)? \ - (((m)->m_ext + (m)->m_size) - (m)->m_data) \ - : \ - (((m)->m_dat + (m)->m_size) - (m)->m_data)) - -/* - * How much free room there is - */ -#define M_FREEROOM(m) (M_ROOM(m) - (m)->m_len) - -struct mbuf { - /* XXX should union some of these! */ - /* header at beginning of each mbuf: */ - struct mbuf *m_next; /* Linked list of mbufs */ - struct mbuf *m_prev; - struct mbuf *m_nextpkt; /* Next packet in queue/record */ - struct mbuf *m_prevpkt; /* Flags aren't used in the output queue */ - int m_flags; /* Misc flags */ - - int m_size; /* Size of mbuf, from m_dat or m_ext */ - struct socket *m_so; - - char *m_data; /* Current location of data */ - int m_len; /* Amount of data in this mbuf, from m_data */ - - Slirp *slirp; - bool resolution_requested; - uint64_t expiration_date; - char *m_ext; - /* start of dynamic buffer area, must be last element */ - char m_dat[]; -}; - -#define ifq_prev m_prev -#define ifq_next m_next -#define ifs_prev m_prevpkt -#define ifs_next m_nextpkt -#define ifq_so m_so - -#define M_EXT 0x01 /* m_ext points to more (malloced) data */ -#define M_FREELIST 0x02 /* mbuf is on free list */ -#define M_USEDLIST 0x04 /* XXX mbuf is on used list (for dtom()) */ -#define M_DOFREE 0x08 /* when m_free is called on the mbuf, free() - * it rather than putting it on the free list */ - -void m_init(Slirp *); -void m_cleanup(Slirp *slirp); -struct mbuf * m_get(Slirp *); -void m_free(struct mbuf *); -void m_cat(register struct mbuf *, register struct mbuf *); -void m_inc(struct mbuf *, int); -void m_adj(struct mbuf *, int); -int m_copy(struct mbuf *, struct mbuf *, int, int); -struct mbuf * dtom(Slirp *, void *); - -static inline void ifs_init(struct mbuf *ifm) -{ - ifm->ifs_next = ifm->ifs_prev = ifm; -} - -#endif diff --git a/slirp/src/misc.c b/slirp/src/misc.c deleted file mode 100644 index 7c5db0e0aa..0000000000 --- a/slirp/src/misc.c +++ /dev/null @@ -1,321 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1995 Danny Gasparovski. - */ - -#include "slirp.h" - -inline void -insque(void *a, void *b) -{ - register struct quehead *element = (struct quehead *) a; - register struct quehead *head = (struct quehead *) b; - element->qh_link = head->qh_link; - head->qh_link = (struct quehead *)element; - element->qh_rlink = (struct quehead *)head; - ((struct quehead *)(element->qh_link))->qh_rlink - = (struct quehead *)element; -} - -inline void -remque(void *a) -{ - register struct quehead *element = (struct quehead *) a; - ((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink; - ((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link; - element->qh_rlink = NULL; -} - -/* TODO: IPv6 */ -struct gfwd_list * -add_guestfwd(struct gfwd_list **ex_ptr, - SlirpWriteCb write_cb, void *opaque, - struct in_addr addr, int port) -{ - struct gfwd_list *f = g_new0(struct gfwd_list, 1); - - f->write_cb = write_cb; - f->opaque = opaque; - f->ex_fport = port; - f->ex_addr = addr; - f->ex_next = *ex_ptr; - *ex_ptr = f; - - return f; -} - -struct gfwd_list * -add_exec(struct gfwd_list **ex_ptr, const char *cmdline, - struct in_addr addr, int port) -{ - struct gfwd_list *f = add_guestfwd(ex_ptr, NULL, NULL, addr, port); - - f->ex_exec = g_strdup(cmdline); - - return f; -} - -static int -slirp_socketpair_with_oob(int sv[2]) -{ - struct sockaddr_in addr = { - .sin_family = AF_INET, - .sin_port = 0, - .sin_addr.s_addr = INADDR_ANY, - }; - socklen_t addrlen = sizeof(addr); - int ret, s; - - sv[1] = -1; - s = slirp_socket(AF_INET, SOCK_STREAM, 0); - if (s < 0 || bind(s, (struct sockaddr *)&addr, addrlen) < 0 || - listen(s, 1) < 0 || - getsockname(s, (struct sockaddr *)&addr, &addrlen) < 0) { - goto err; - } - - sv[1] = slirp_socket(AF_INET, SOCK_STREAM, 0); - if (sv[1] < 0) { - goto err; - } - /* - * This connect won't block because we've already listen()ed on - * the server end (even though we won't accept() the connection - * until later on). - */ - do { - ret = connect(sv[1], (struct sockaddr *)&addr, addrlen); - } while (ret < 0 && errno == EINTR); - if (ret < 0) { - goto err; - } - - do { - sv[0] = accept(s, (struct sockaddr *)&addr, &addrlen); - } while (sv[0] < 0 && errno == EINTR); - if (sv[0] < 0) { - goto err; - } - - closesocket(s); - return 0; - -err: - g_critical("slirp_socketpair(): %s", strerror(errno)); - if (s >= 0) { - closesocket(s); - } - if (sv[1] >= 0) { - closesocket(sv[1]); - } - return -1; -} - -static void -fork_exec_child_setup(gpointer data) -{ -#ifndef _WIN32 - setsid(); -#endif -} - -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wdeprecated-declarations" - -#if !GLIB_CHECK_VERSION(2, 58, 0) -typedef struct SlirpGSpawnFds { - GSpawnChildSetupFunc child_setup; - gpointer user_data; - gint stdin_fd; - gint stdout_fd; - gint stderr_fd; -} SlirpGSpawnFds; - -static inline void -slirp_gspawn_fds_setup(gpointer user_data) -{ - SlirpGSpawnFds *q = (SlirpGSpawnFds *)user_data; - - dup2(q->stdin_fd, 0); - dup2(q->stdout_fd, 1); - dup2(q->stderr_fd, 2); - q->child_setup(q->user_data); -} -#endif - -static inline gboolean -g_spawn_async_with_fds_slirp(const gchar *working_directory, - gchar **argv, - gchar **envp, - GSpawnFlags flags, - GSpawnChildSetupFunc child_setup, - gpointer user_data, - GPid *child_pid, - gint stdin_fd, - gint stdout_fd, - gint stderr_fd, - GError **error) -{ -#if GLIB_CHECK_VERSION(2, 58, 0) - return g_spawn_async_with_fds(working_directory, argv, envp, flags, - child_setup, user_data, - child_pid, stdin_fd, stdout_fd, stderr_fd, - error); -#else - SlirpGSpawnFds setup = { - .child_setup = child_setup, - .user_data = user_data, - .stdin_fd = stdin_fd, - .stdout_fd = stdout_fd, - .stderr_fd = stderr_fd, - }; - - return g_spawn_async(working_directory, argv, envp, flags, - slirp_gspawn_fds_setup, &setup, - child_pid, error); -#endif -} - -#define g_spawn_async_with_fds(wd, argv, env, f, c, d, p, ifd, ofd, efd, err) \ - g_spawn_async_with_fds_slirp(wd, argv, env, f, c, d, p, ifd, ofd, efd, err) - -#pragma GCC diagnostic pop - -int -fork_exec(struct socket *so, const char *ex) -{ - GError *err = NULL; - char **argv; - int opt, sp[2]; - - DEBUG_CALL("fork_exec"); - DEBUG_ARG("so = %p", so); - DEBUG_ARG("ex = %p", ex); - - if (slirp_socketpair_with_oob(sp) < 0) { - return 0; - } - - argv = g_strsplit(ex, " ", -1); - g_spawn_async_with_fds(NULL /* cwd */, - argv, - NULL /* env */, - G_SPAWN_SEARCH_PATH, - fork_exec_child_setup, NULL /* data */, - NULL /* child_pid */, - sp[1], sp[1], sp[1], - &err); - g_strfreev(argv); - - if (err) { - g_critical("fork_exec: %s", err->message); - g_error_free(err); - closesocket(sp[0]); - closesocket(sp[1]); - return 0; - } - - so->s = sp[0]; - closesocket(sp[1]); - slirp_socket_set_fast_reuse(so->s); - opt = 1; - setsockopt(so->s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int)); - slirp_set_nonblock(so->s); - so->slirp->cb->register_poll_fd(so->s, so->slirp->opaque); - return 1; -} - -char *slirp_connection_info(Slirp *slirp) -{ - GString *str = g_string_new(NULL); - const char * const tcpstates[] = { - [TCPS_CLOSED] = "CLOSED", - [TCPS_LISTEN] = "LISTEN", - [TCPS_SYN_SENT] = "SYN_SENT", - [TCPS_SYN_RECEIVED] = "SYN_RCVD", - [TCPS_ESTABLISHED] = "ESTABLISHED", - [TCPS_CLOSE_WAIT] = "CLOSE_WAIT", - [TCPS_FIN_WAIT_1] = "FIN_WAIT_1", - [TCPS_CLOSING] = "CLOSING", - [TCPS_LAST_ACK] = "LAST_ACK", - [TCPS_FIN_WAIT_2] = "FIN_WAIT_2", - [TCPS_TIME_WAIT] = "TIME_WAIT", - }; - struct in_addr dst_addr; - struct sockaddr_in src; - socklen_t src_len; - uint16_t dst_port; - struct socket *so; - const char *state; - char buf[20]; - - g_string_append_printf(str, - " Protocol[State] FD Source Address Port " - "Dest. Address Port RecvQ SendQ\n"); - - /* TODO: IPv6 */ - - for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) { - if (so->so_state & SS_HOSTFWD) { - state = "HOST_FORWARD"; - } else if (so->so_tcpcb) { - state = tcpstates[so->so_tcpcb->t_state]; - } else { - state = "NONE"; - } - if (so->so_state & (SS_HOSTFWD | SS_INCOMING)) { - src_len = sizeof(src); - getsockname(so->s, (struct sockaddr *)&src, &src_len); - dst_addr = so->so_laddr; - dst_port = so->so_lport; - } else { - src.sin_addr = so->so_laddr; - src.sin_port = so->so_lport; - dst_addr = so->so_faddr; - dst_port = so->so_fport; - } - snprintf(buf, sizeof(buf), " TCP[%s]", state); - g_string_append_printf(str, "%-19s %3d %15s %5d ", buf, so->s, - src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*", - ntohs(src.sin_port)); - g_string_append_printf(str, "%15s %5d %5d %5d\n", - inet_ntoa(dst_addr), ntohs(dst_port), - so->so_rcv.sb_cc, so->so_snd.sb_cc); - } - - for (so = slirp->udb.so_next; so != &slirp->udb; so = so->so_next) { - if (so->so_state & SS_HOSTFWD) { - snprintf(buf, sizeof(buf), " UDP[HOST_FORWARD]"); - src_len = sizeof(src); - getsockname(so->s, (struct sockaddr *)&src, &src_len); - dst_addr = so->so_laddr; - dst_port = so->so_lport; - } else { - snprintf(buf, sizeof(buf), " UDP[%d sec]", - (so->so_expire - curtime) / 1000); - src.sin_addr = so->so_laddr; - src.sin_port = so->so_lport; - dst_addr = so->so_faddr; - dst_port = so->so_fport; - } - g_string_append_printf(str, "%-19s %3d %15s %5d ", buf, so->s, - src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*", - ntohs(src.sin_port)); - g_string_append_printf(str, "%15s %5d %5d %5d\n", - inet_ntoa(dst_addr), ntohs(dst_port), - so->so_rcv.sb_cc, so->so_snd.sb_cc); - } - - for (so = slirp->icmp.so_next; so != &slirp->icmp; so = so->so_next) { - snprintf(buf, sizeof(buf), " ICMP[%d sec]", - (so->so_expire - curtime) / 1000); - src.sin_addr = so->so_laddr; - dst_addr = so->so_faddr; - g_string_append_printf(str, "%-19s %3d %15s - ", buf, so->s, - src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*"); - g_string_append_printf(str, "%15s - %5d %5d\n", inet_ntoa(dst_addr), - so->so_rcv.sb_cc, so->so_snd.sb_cc); - } - - return g_string_free(str, FALSE); -} diff --git a/slirp/src/misc.h b/slirp/src/misc.h deleted file mode 100644 index 23b7490448..0000000000 --- a/slirp/src/misc.h +++ /dev/null @@ -1,66 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1995 Danny Gasparovski. - */ - -#ifndef MISC_H -#define MISC_H - -#include "libslirp.h" - -struct gfwd_list { - SlirpWriteCb write_cb; - void *opaque; - struct in_addr ex_addr; /* Server address */ - int ex_fport; /* Port to telnet to */ - char *ex_exec; /* Command line of what to exec */ - struct gfwd_list *ex_next; -}; - -#define EMU_NONE 0x0 - -/* TCP emulations */ -#define EMU_CTL 0x1 -#define EMU_FTP 0x2 -#define EMU_KSH 0x3 -#define EMU_IRC 0x4 -#define EMU_REALAUDIO 0x5 -#define EMU_RLOGIN 0x6 -#define EMU_IDENT 0x7 - -#define EMU_NOCONNECT 0x10 /* Don't connect */ - -struct tos_t { - uint16_t lport; - uint16_t fport; - uint8_t tos; - uint8_t emu; -}; - -struct emu_t { - uint16_t lport; - uint16_t fport; - uint8_t tos; - uint8_t emu; - struct emu_t *next; -}; - -struct slirp_quehead { - struct slirp_quehead *qh_link; - struct slirp_quehead *qh_rlink; -}; - -void slirp_insque(void *, void *); -void slirp_remque(void *); -int fork_exec(struct socket *so, const char *ex); - -struct gfwd_list * -add_guestfwd(struct gfwd_list **ex_ptr, - SlirpWriteCb write_cb, void *opaque, - struct in_addr addr, int port); - -struct gfwd_list * -add_exec(struct gfwd_list **ex_ptr, const char *cmdline, - struct in_addr addr, int port); - -#endif diff --git a/slirp/src/ncsi-pkt.h b/slirp/src/ncsi-pkt.h deleted file mode 100644 index 4c0be39f6e..0000000000 --- a/slirp/src/ncsi-pkt.h +++ /dev/null @@ -1,445 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright Gavin Shan, IBM Corporation 2016. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * 2. Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * - * 3. Neither the name of the copyright holder nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef NCSI_PKT_H -#define NCSI_PKT_H - -/* from linux/net/ncsi/ncsi-pkt.h */ -#define __be32 uint32_t -#define __be16 uint16_t - -struct ncsi_pkt_hdr { - unsigned char mc_id; /* Management controller ID */ - unsigned char revision; /* NCSI version - 0x01 */ - unsigned char reserved; /* Reserved */ - unsigned char id; /* Packet sequence number */ - unsigned char type; /* Packet type */ - unsigned char channel; /* Network controller ID */ - __be16 length; /* Payload length */ - __be32 reserved1[2]; /* Reserved */ -}; - -struct ncsi_cmd_pkt_hdr { - struct ncsi_pkt_hdr common; /* Common NCSI packet header */ -}; - -struct ncsi_rsp_pkt_hdr { - struct ncsi_pkt_hdr common; /* Common NCSI packet header */ - __be16 code; /* Response code */ - __be16 reason; /* Response reason */ -}; - -struct ncsi_aen_pkt_hdr { - struct ncsi_pkt_hdr common; /* Common NCSI packet header */ - unsigned char reserved2[3]; /* Reserved */ - unsigned char type; /* AEN packet type */ -}; - -/* NCSI common command packet */ -struct ncsi_cmd_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - __be32 checksum; /* Checksum */ - unsigned char pad[26]; -}; - -struct ncsi_rsp_pkt { - struct ncsi_rsp_pkt_hdr rsp; /* Response header */ - __be32 checksum; /* Checksum */ - unsigned char pad[22]; -}; - -/* Select Package */ -struct ncsi_cmd_sp_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - unsigned char reserved[3]; /* Reserved */ - unsigned char hw_arbitration; /* HW arbitration */ - __be32 checksum; /* Checksum */ - unsigned char pad[22]; -}; - -/* Disable Channel */ -struct ncsi_cmd_dc_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - unsigned char reserved[3]; /* Reserved */ - unsigned char ald; /* Allow link down */ - __be32 checksum; /* Checksum */ - unsigned char pad[22]; -}; - -/* Reset Channel */ -struct ncsi_cmd_rc_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - __be32 reserved; /* Reserved */ - __be32 checksum; /* Checksum */ - unsigned char pad[22]; -}; - -/* AEN Enable */ -struct ncsi_cmd_ae_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - unsigned char reserved[3]; /* Reserved */ - unsigned char mc_id; /* MC ID */ - __be32 mode; /* AEN working mode */ - __be32 checksum; /* Checksum */ - unsigned char pad[18]; -}; - -/* Set Link */ -struct ncsi_cmd_sl_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - __be32 mode; /* Link working mode */ - __be32 oem_mode; /* OEM link mode */ - __be32 checksum; /* Checksum */ - unsigned char pad[18]; -}; - -/* Set VLAN Filter */ -struct ncsi_cmd_svf_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - __be16 reserved; /* Reserved */ - __be16 vlan; /* VLAN ID */ - __be16 reserved1; /* Reserved */ - unsigned char index; /* VLAN table index */ - unsigned char enable; /* Enable or disable */ - __be32 checksum; /* Checksum */ - unsigned char pad[14]; -}; - -/* Enable VLAN */ -struct ncsi_cmd_ev_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - unsigned char reserved[3]; /* Reserved */ - unsigned char mode; /* VLAN filter mode */ - __be32 checksum; /* Checksum */ - unsigned char pad[22]; -}; - -/* Set MAC Address */ -struct ncsi_cmd_sma_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - unsigned char mac[6]; /* MAC address */ - unsigned char index; /* MAC table index */ - unsigned char at_e; /* Addr type and operation */ - __be32 checksum; /* Checksum */ - unsigned char pad[18]; -}; - -/* Enable Broadcast Filter */ -struct ncsi_cmd_ebf_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - __be32 mode; /* Filter mode */ - __be32 checksum; /* Checksum */ - unsigned char pad[22]; -}; - -/* Enable Global Multicast Filter */ -struct ncsi_cmd_egmf_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - __be32 mode; /* Global MC mode */ - __be32 checksum; /* Checksum */ - unsigned char pad[22]; -}; - -/* Set NCSI Flow Control */ -struct ncsi_cmd_snfc_pkt { - struct ncsi_cmd_pkt_hdr cmd; /* Command header */ - unsigned char reserved[3]; /* Reserved */ - unsigned char mode; /* Flow control mode */ - __be32 checksum; /* Checksum */ - unsigned char pad[22]; -}; - -/* Get Link Status */ -struct ncsi_rsp_gls_pkt { - struct ncsi_rsp_pkt_hdr rsp; /* Response header */ - __be32 status; /* Link status */ - __be32 other; /* Other indications */ - __be32 oem_status; /* OEM link status */ - __be32 checksum; - unsigned char pad[10]; -}; - -/* Get Version ID */ -struct ncsi_rsp_gvi_pkt { - struct ncsi_rsp_pkt_hdr rsp; /* Response header */ - __be32 ncsi_version; /* NCSI version */ - unsigned char reserved[3]; /* Reserved */ - unsigned char alpha2; /* NCSI version */ - unsigned char fw_name[12]; /* f/w name string */ - __be32 fw_version; /* f/w version */ - __be16 pci_ids[4]; /* PCI IDs */ - __be32 mf_id; /* Manufacture ID */ - __be32 checksum; -}; - -/* Get Capabilities */ -struct ncsi_rsp_gc_pkt { - struct ncsi_rsp_pkt_hdr rsp; /* Response header */ - __be32 cap; /* Capabilities */ - __be32 bc_cap; /* Broadcast cap */ - __be32 mc_cap; /* Multicast cap */ - __be32 buf_cap; /* Buffering cap */ - __be32 aen_cap; /* AEN cap */ - unsigned char vlan_cnt; /* VLAN filter count */ - unsigned char mixed_cnt; /* Mix filter count */ - unsigned char mc_cnt; /* MC filter count */ - unsigned char uc_cnt; /* UC filter count */ - unsigned char reserved[2]; /* Reserved */ - unsigned char vlan_mode; /* VLAN mode */ - unsigned char channel_cnt; /* Channel count */ - __be32 checksum; /* Checksum */ -}; - -/* Get Parameters */ -struct ncsi_rsp_gp_pkt { - struct ncsi_rsp_pkt_hdr rsp; /* Response header */ - unsigned char mac_cnt; /* Number of MAC addr */ - unsigned char reserved[2]; /* Reserved */ - unsigned char mac_enable; /* MAC addr enable flags */ - unsigned char vlan_cnt; /* VLAN tag count */ - unsigned char reserved1; /* Reserved */ - __be16 vlan_enable; /* VLAN tag enable flags */ - __be32 link_mode; /* Link setting */ - __be32 bc_mode; /* BC filter mode */ - __be32 valid_modes; /* Valid mode parameters */ - unsigned char vlan_mode; /* VLAN mode */ - unsigned char fc_mode; /* Flow control mode */ - unsigned char reserved2[2]; /* Reserved */ - __be32 aen_mode; /* AEN mode */ - unsigned char mac[6]; /* Supported MAC addr */ - __be16 vlan; /* Supported VLAN tags */ - __be32 checksum; /* Checksum */ -}; - -/* Get Controller Packet Statistics */ -struct ncsi_rsp_gcps_pkt { - struct ncsi_rsp_pkt_hdr rsp; /* Response header */ - __be32 cnt_hi; /* Counter cleared */ - __be32 cnt_lo; /* Counter cleared */ - __be32 rx_bytes; /* Rx bytes */ - __be32 tx_bytes; /* Tx bytes */ - __be32 rx_uc_pkts; /* Rx UC packets */ - __be32 rx_mc_pkts; /* Rx MC packets */ - __be32 rx_bc_pkts; /* Rx BC packets */ - __be32 tx_uc_pkts; /* Tx UC packets */ - __be32 tx_mc_pkts; /* Tx MC packets */ - __be32 tx_bc_pkts; /* Tx BC packets */ - __be32 fcs_err; /* FCS errors */ - __be32 align_err; /* Alignment errors */ - __be32 false_carrier; /* False carrier detection */ - __be32 runt_pkts; /* Rx runt packets */ - __be32 jabber_pkts; /* Rx jabber packets */ - __be32 rx_pause_xon; /* Rx pause XON frames */ - __be32 rx_pause_xoff; /* Rx XOFF frames */ - __be32 tx_pause_xon; /* Tx XON frames */ - __be32 tx_pause_xoff; /* Tx XOFF frames */ - __be32 tx_s_collision; /* Single collision frames */ - __be32 tx_m_collision; /* Multiple collision frames */ - __be32 l_collision; /* Late collision frames */ - __be32 e_collision; /* Excessive collision frames */ - __be32 rx_ctl_frames; /* Rx control frames */ - __be32 rx_64_frames; /* Rx 64-bytes frames */ - __be32 rx_127_frames; /* Rx 65-127 bytes frames */ - __be32 rx_255_frames; /* Rx 128-255 bytes frames */ - __be32 rx_511_frames; /* Rx 256-511 bytes frames */ - __be32 rx_1023_frames; /* Rx 512-1023 bytes frames */ - __be32 rx_1522_frames; /* Rx 1024-1522 bytes frames */ - __be32 rx_9022_frames; /* Rx 1523-9022 bytes frames */ - __be32 tx_64_frames; /* Tx 64-bytes frames */ - __be32 tx_127_frames; /* Tx 65-127 bytes frames */ - __be32 tx_255_frames; /* Tx 128-255 bytes frames */ - __be32 tx_511_frames; /* Tx 256-511 bytes frames */ - __be32 tx_1023_frames; /* Tx 512-1023 bytes frames */ - __be32 tx_1522_frames; /* Tx 1024-1522 bytes frames */ - __be32 tx_9022_frames; /* Tx 1523-9022 bytes frames */ - __be32 rx_valid_bytes; /* Rx valid bytes */ - __be32 rx_runt_pkts; /* Rx error runt packets */ - __be32 rx_jabber_pkts; /* Rx error jabber packets */ - __be32 checksum; /* Checksum */ -}; - -/* Get NCSI Statistics */ -struct ncsi_rsp_gns_pkt { - struct ncsi_rsp_pkt_hdr rsp; /* Response header */ - __be32 rx_cmds; /* Rx NCSI commands */ - __be32 dropped_cmds; /* Dropped commands */ - __be32 cmd_type_errs; /* Command type errors */ - __be32 cmd_csum_errs; /* Command checksum errors */ - __be32 rx_pkts; /* Rx NCSI packets */ - __be32 tx_pkts; /* Tx NCSI packets */ - __be32 tx_aen_pkts; /* Tx AEN packets */ - __be32 checksum; /* Checksum */ -}; - -/* Get NCSI Pass-through Statistics */ -struct ncsi_rsp_gnpts_pkt { - struct ncsi_rsp_pkt_hdr rsp; /* Response header */ - __be32 tx_pkts; /* Tx packets */ - __be32 tx_dropped; /* Tx dropped packets */ - __be32 tx_channel_err; /* Tx channel errors */ - __be32 tx_us_err; /* Tx undersize errors */ - __be32 rx_pkts; /* Rx packets */ - __be32 rx_dropped; /* Rx dropped packets */ - __be32 rx_channel_err; /* Rx channel errors */ - __be32 rx_us_err; /* Rx undersize errors */ - __be32 rx_os_err; /* Rx oversize errors */ - __be32 checksum; /* Checksum */ -}; - -/* Get package status */ -struct ncsi_rsp_gps_pkt { - struct ncsi_rsp_pkt_hdr rsp; /* Response header */ - __be32 status; /* Hardware arbitration status */ - __be32 checksum; -}; - -/* Get package UUID */ -struct ncsi_rsp_gpuuid_pkt { - struct ncsi_rsp_pkt_hdr rsp; /* Response header */ - unsigned char uuid[16]; /* UUID */ - __be32 checksum; -}; - -/* AEN: Link State Change */ -struct ncsi_aen_lsc_pkt { - struct ncsi_aen_pkt_hdr aen; /* AEN header */ - __be32 status; /* Link status */ - __be32 oem_status; /* OEM link status */ - __be32 checksum; /* Checksum */ - unsigned char pad[14]; -}; - -/* AEN: Configuration Required */ -struct ncsi_aen_cr_pkt { - struct ncsi_aen_pkt_hdr aen; /* AEN header */ - __be32 checksum; /* Checksum */ - unsigned char pad[22]; -}; - -/* AEN: Host Network Controller Driver Status Change */ -struct ncsi_aen_hncdsc_pkt { - struct ncsi_aen_pkt_hdr aen; /* AEN header */ - __be32 status; /* Status */ - __be32 checksum; /* Checksum */ - unsigned char pad[18]; -}; - -/* NCSI packet revision */ -#define NCSI_PKT_REVISION 0x01 - -/* NCSI packet commands */ -#define NCSI_PKT_CMD_CIS 0x00 /* Clear Initial State */ -#define NCSI_PKT_CMD_SP 0x01 /* Select Package */ -#define NCSI_PKT_CMD_DP 0x02 /* Deselect Package */ -#define NCSI_PKT_CMD_EC 0x03 /* Enable Channel */ -#define NCSI_PKT_CMD_DC 0x04 /* Disable Channel */ -#define NCSI_PKT_CMD_RC 0x05 /* Reset Channel */ -#define NCSI_PKT_CMD_ECNT 0x06 /* Enable Channel Network Tx */ -#define NCSI_PKT_CMD_DCNT 0x07 /* Disable Channel Network Tx */ -#define NCSI_PKT_CMD_AE 0x08 /* AEN Enable */ -#define NCSI_PKT_CMD_SL 0x09 /* Set Link */ -#define NCSI_PKT_CMD_GLS 0x0a /* Get Link */ -#define NCSI_PKT_CMD_SVF 0x0b /* Set VLAN Filter */ -#define NCSI_PKT_CMD_EV 0x0c /* Enable VLAN */ -#define NCSI_PKT_CMD_DV 0x0d /* Disable VLAN */ -#define NCSI_PKT_CMD_SMA 0x0e /* Set MAC address */ -#define NCSI_PKT_CMD_EBF 0x10 /* Enable Broadcast Filter */ -#define NCSI_PKT_CMD_DBF 0x11 /* Disable Broadcast Filter */ -#define NCSI_PKT_CMD_EGMF 0x12 /* Enable Global Multicast Filter */ -#define NCSI_PKT_CMD_DGMF 0x13 /* Disable Global Multicast Filter */ -#define NCSI_PKT_CMD_SNFC 0x14 /* Set NCSI Flow Control */ -#define NCSI_PKT_CMD_GVI 0x15 /* Get Version ID */ -#define NCSI_PKT_CMD_GC 0x16 /* Get Capabilities */ -#define NCSI_PKT_CMD_GP 0x17 /* Get Parameters */ -#define NCSI_PKT_CMD_GCPS 0x18 /* Get Controller Packet Statistics */ -#define NCSI_PKT_CMD_GNS 0x19 /* Get NCSI Statistics */ -#define NCSI_PKT_CMD_GNPTS 0x1a /* Get NCSI Pass-throu Statistics */ -#define NCSI_PKT_CMD_GPS 0x1b /* Get package status */ -#define NCSI_PKT_CMD_OEM 0x50 /* OEM */ -#define NCSI_PKT_CMD_PLDM 0x51 /* PLDM request over NCSI over RBT */ -#define NCSI_PKT_CMD_GPUUID 0x52 /* Get package UUID */ - -/* NCSI packet responses */ -#define NCSI_PKT_RSP_CIS (NCSI_PKT_CMD_CIS + 0x80) -#define NCSI_PKT_RSP_SP (NCSI_PKT_CMD_SP + 0x80) -#define NCSI_PKT_RSP_DP (NCSI_PKT_CMD_DP + 0x80) -#define NCSI_PKT_RSP_EC (NCSI_PKT_CMD_EC + 0x80) -#define NCSI_PKT_RSP_DC (NCSI_PKT_CMD_DC + 0x80) -#define NCSI_PKT_RSP_RC (NCSI_PKT_CMD_RC + 0x80) -#define NCSI_PKT_RSP_ECNT (NCSI_PKT_CMD_ECNT + 0x80) -#define NCSI_PKT_RSP_DCNT (NCSI_PKT_CMD_DCNT + 0x80) -#define NCSI_PKT_RSP_AE (NCSI_PKT_CMD_AE + 0x80) -#define NCSI_PKT_RSP_SL (NCSI_PKT_CMD_SL + 0x80) -#define NCSI_PKT_RSP_GLS (NCSI_PKT_CMD_GLS + 0x80) -#define NCSI_PKT_RSP_SVF (NCSI_PKT_CMD_SVF + 0x80) -#define NCSI_PKT_RSP_EV (NCSI_PKT_CMD_EV + 0x80) -#define NCSI_PKT_RSP_DV (NCSI_PKT_CMD_DV + 0x80) -#define NCSI_PKT_RSP_SMA (NCSI_PKT_CMD_SMA + 0x80) -#define NCSI_PKT_RSP_EBF (NCSI_PKT_CMD_EBF + 0x80) -#define NCSI_PKT_RSP_DBF (NCSI_PKT_CMD_DBF + 0x80) -#define NCSI_PKT_RSP_EGMF (NCSI_PKT_CMD_EGMF + 0x80) -#define NCSI_PKT_RSP_DGMF (NCSI_PKT_CMD_DGMF + 0x80) -#define NCSI_PKT_RSP_SNFC (NCSI_PKT_CMD_SNFC + 0x80) -#define NCSI_PKT_RSP_GVI (NCSI_PKT_CMD_GVI + 0x80) -#define NCSI_PKT_RSP_GC (NCSI_PKT_CMD_GC + 0x80) -#define NCSI_PKT_RSP_GP (NCSI_PKT_CMD_GP + 0x80) -#define NCSI_PKT_RSP_GCPS (NCSI_PKT_CMD_GCPS + 0x80) -#define NCSI_PKT_RSP_GNS (NCSI_PKT_CMD_GNS + 0x80) -#define NCSI_PKT_RSP_GNPTS (NCSI_PKT_CMD_GNPTS + 0x80) -#define NCSI_PKT_RSP_GPS (NCSI_PKT_CMD_GPS + 0x80) -#define NCSI_PKT_RSP_OEM (NCSI_PKT_CMD_OEM + 0x80) -#define NCSI_PKT_RSP_PLDM (NCSI_PKT_CMD_PLDM + 0x80) -#define NCSI_PKT_RSP_GPUUID (NCSI_PKT_CMD_GPUUID + 0x80) - -/* NCSI response code/reason */ -#define NCSI_PKT_RSP_C_COMPLETED 0x0000 /* Command Completed */ -#define NCSI_PKT_RSP_C_FAILED 0x0001 /* Command Failed */ -#define NCSI_PKT_RSP_C_UNAVAILABLE 0x0002 /* Command Unavailable */ -#define NCSI_PKT_RSP_C_UNSUPPORTED 0x0003 /* Command Unsupported */ -#define NCSI_PKT_RSP_R_NO_ERROR 0x0000 /* No Error */ -#define NCSI_PKT_RSP_R_INTERFACE 0x0001 /* Interface not ready */ -#define NCSI_PKT_RSP_R_PARAM 0x0002 /* Invalid Parameter */ -#define NCSI_PKT_RSP_R_CHANNEL 0x0003 /* Channel not Ready */ -#define NCSI_PKT_RSP_R_PACKAGE 0x0004 /* Package not Ready */ -#define NCSI_PKT_RSP_R_LENGTH 0x0005 /* Invalid payload length */ -#define NCSI_PKT_RSP_R_UNKNOWN 0x7fff /* Command type unsupported */ - -/* NCSI AEN packet type */ -#define NCSI_PKT_AEN 0xFF /* AEN Packet */ -#define NCSI_PKT_AEN_LSC 0x00 /* Link status change */ -#define NCSI_PKT_AEN_CR 0x01 /* Configuration required */ -#define NCSI_PKT_AEN_HNCDSC 0x02 /* HNC driver status change */ - -#endif /* NCSI_PKT_H */ diff --git a/slirp/src/ncsi.c b/slirp/src/ncsi.c deleted file mode 100644 index 6d574ec5ec..0000000000 --- a/slirp/src/ncsi.c +++ /dev/null @@ -1,194 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * NC-SI (Network Controller Sideband Interface) "echo" model - * - * Copyright (C) 2016-2018 IBM Corp. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * 2. Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * - * 3. Neither the name of the copyright holder nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#include "slirp.h" - -#include "ncsi-pkt.h" - -static uint32_t ncsi_calculate_checksum(uint16_t *data, int len) -{ - uint32_t checksum = 0; - int i; - - /* - * 32-bit unsigned sum of the NC-SI packet header and NC-SI packet - * payload interpreted as a series of 16-bit unsigned integer values. - */ - for (i = 0; i < len; i++) { - checksum += htons(data[i]); - } - - checksum = (~checksum + 1); - return checksum; -} - -/* Get Capabilities */ -static int ncsi_rsp_handler_gc(struct ncsi_rsp_pkt_hdr *rnh) -{ - struct ncsi_rsp_gc_pkt *rsp = (struct ncsi_rsp_gc_pkt *) rnh; - - rsp->cap = htonl(~0); - rsp->bc_cap = htonl(~0); - rsp->mc_cap = htonl(~0); - rsp->buf_cap = htonl(~0); - rsp->aen_cap = htonl(~0); - rsp->vlan_mode = 0xff; - rsp->uc_cnt = 2; - return 0; -} - -/* Get Link status */ -static int ncsi_rsp_handler_gls(struct ncsi_rsp_pkt_hdr *rnh) -{ - struct ncsi_rsp_gls_pkt *rsp = (struct ncsi_rsp_gls_pkt *) rnh; - - rsp->status = htonl(0x1); - return 0; -} - -/* Get Parameters */ -static int ncsi_rsp_handler_gp(struct ncsi_rsp_pkt_hdr *rnh) -{ - struct ncsi_rsp_gp_pkt *rsp = (struct ncsi_rsp_gp_pkt *) rnh; - - /* no MAC address filters or VLAN filters on the channel */ - rsp->mac_cnt = 0; - rsp->mac_enable = 0; - rsp->vlan_cnt = 0; - rsp->vlan_enable = 0; - - return 0; -} - -static const struct ncsi_rsp_handler { - unsigned char type; - int payload; - int (*handler)(struct ncsi_rsp_pkt_hdr *rnh); -} ncsi_rsp_handlers[] = { - { NCSI_PKT_RSP_CIS, 4, NULL }, - { NCSI_PKT_RSP_SP, 4, NULL }, - { NCSI_PKT_RSP_DP, 4, NULL }, - { NCSI_PKT_RSP_EC, 4, NULL }, - { NCSI_PKT_RSP_DC, 4, NULL }, - { NCSI_PKT_RSP_RC, 4, NULL }, - { NCSI_PKT_RSP_ECNT, 4, NULL }, - { NCSI_PKT_RSP_DCNT, 4, NULL }, - { NCSI_PKT_RSP_AE, 4, NULL }, - { NCSI_PKT_RSP_SL, 4, NULL }, - { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls }, - { NCSI_PKT_RSP_SVF, 4, NULL }, - { NCSI_PKT_RSP_EV, 4, NULL }, - { NCSI_PKT_RSP_DV, 4, NULL }, - { NCSI_PKT_RSP_SMA, 4, NULL }, - { NCSI_PKT_RSP_EBF, 4, NULL }, - { NCSI_PKT_RSP_DBF, 4, NULL }, - { NCSI_PKT_RSP_EGMF, 4, NULL }, - { NCSI_PKT_RSP_DGMF, 4, NULL }, - { NCSI_PKT_RSP_SNFC, 4, NULL }, - { NCSI_PKT_RSP_GVI, 40, NULL }, - { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc }, - { NCSI_PKT_RSP_GP, 40, ncsi_rsp_handler_gp }, - { NCSI_PKT_RSP_GCPS, 172, NULL }, - { NCSI_PKT_RSP_GNS, 172, NULL }, - { NCSI_PKT_RSP_GNPTS, 172, NULL }, - { NCSI_PKT_RSP_GPS, 8, NULL }, - { NCSI_PKT_RSP_OEM, 0, NULL }, - { NCSI_PKT_RSP_PLDM, 0, NULL }, - { NCSI_PKT_RSP_GPUUID, 20, NULL } -}; - -/* - * packet format : ncsi header + payload + checksum - */ -#define NCSI_MAX_PAYLOAD 172 -#define NCSI_MAX_LEN (sizeof(struct ncsi_pkt_hdr) + NCSI_MAX_PAYLOAD + 4) - -void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) -{ - struct ncsi_pkt_hdr *nh = (struct ncsi_pkt_hdr *)(pkt + ETH_HLEN); - uint8_t ncsi_reply[ETH_HLEN + NCSI_MAX_LEN]; - struct ethhdr *reh = (struct ethhdr *)ncsi_reply; - struct ncsi_rsp_pkt_hdr *rnh = (struct ncsi_rsp_pkt_hdr *) - (ncsi_reply + ETH_HLEN); - const struct ncsi_rsp_handler *handler = NULL; - int i; - int ncsi_rsp_len = sizeof(*nh); - uint32_t checksum; - uint32_t *pchecksum; - - memset(ncsi_reply, 0, sizeof(ncsi_reply)); - - memset(reh->h_dest, 0xff, ETH_ALEN); - memset(reh->h_source, 0xff, ETH_ALEN); - reh->h_proto = htons(ETH_P_NCSI); - - for (i = 0; i < G_N_ELEMENTS(ncsi_rsp_handlers); i++) { - if (ncsi_rsp_handlers[i].type == nh->type + 0x80) { - handler = &ncsi_rsp_handlers[i]; - break; - } - } - - rnh->common.mc_id = nh->mc_id; - rnh->common.revision = NCSI_PKT_REVISION; - rnh->common.id = nh->id; - rnh->common.type = nh->type + 0x80; - rnh->common.channel = nh->channel; - - if (handler) { - rnh->common.length = htons(handler->payload); - rnh->code = htons(NCSI_PKT_RSP_C_COMPLETED); - rnh->reason = htons(NCSI_PKT_RSP_R_NO_ERROR); - - if (handler->handler) { - /* TODO: handle errors */ - handler->handler(rnh); - } - ncsi_rsp_len += handler->payload; - } else { - rnh->common.length = 0; - rnh->code = htons(NCSI_PKT_RSP_C_UNAVAILABLE); - rnh->reason = htons(NCSI_PKT_RSP_R_UNKNOWN); - } - - /* Add the optional checksum at the end of the frame. */ - checksum = ncsi_calculate_checksum((uint16_t *) rnh, ncsi_rsp_len); - pchecksum = (uint32_t *)((void *) rnh + ncsi_rsp_len); - *pchecksum = htonl(checksum); - ncsi_rsp_len += 4; - - slirp_send_packet_all(slirp, ncsi_reply, ETH_HLEN + ncsi_rsp_len); -} diff --git a/slirp/src/ndp_table.c b/slirp/src/ndp_table.c deleted file mode 100644 index 78324877e2..0000000000 --- a/slirp/src/ndp_table.c +++ /dev/null @@ -1,87 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 2013 - * Guillaume Subiron, Yann Bordenave, Serigne Modou Wagne. - */ - -#include "slirp.h" - -void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr, - uint8_t ethaddr[ETH_ALEN]) -{ - char addrstr[INET6_ADDRSTRLEN]; - NdpTable *ndp_table = &slirp->ndp_table; - int i; - - inet_ntop(AF_INET6, &(ip_addr), addrstr, INET6_ADDRSTRLEN); - - DEBUG_CALL("ndp_table_add"); - DEBUG_ARG("ip = %s", addrstr); - DEBUG_ARG("hw addr = %02x:%02x:%02x:%02x:%02x:%02x", - ethaddr[0], ethaddr[1], ethaddr[2], - ethaddr[3], ethaddr[4], ethaddr[5]); - - if (IN6_IS_ADDR_MULTICAST(&ip_addr) || in6_zero(&ip_addr)) { - /* Do not register multicast or unspecified addresses */ - DEBUG_CALL(" abort: do not register multicast or unspecified address"); - return; - } - - /* Search for an entry */ - for (i = 0; i < NDP_TABLE_SIZE; i++) { - if (in6_equal(&ndp_table->table[i].ip_addr, &ip_addr)) { - DEBUG_CALL(" already in table: update the entry"); - /* Update the entry */ - memcpy(ndp_table->table[i].eth_addr, ethaddr, ETH_ALEN); - return; - } - } - - /* No entry found, create a new one */ - DEBUG_CALL(" create new entry"); - ndp_table->table[ndp_table->next_victim].ip_addr = ip_addr; - memcpy(ndp_table->table[ndp_table->next_victim].eth_addr, - ethaddr, ETH_ALEN); - ndp_table->next_victim = (ndp_table->next_victim + 1) % NDP_TABLE_SIZE; -} - -bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr, - uint8_t out_ethaddr[ETH_ALEN]) -{ - char addrstr[INET6_ADDRSTRLEN]; - NdpTable *ndp_table = &slirp->ndp_table; - int i; - - inet_ntop(AF_INET6, &(ip_addr), addrstr, INET6_ADDRSTRLEN); - - DEBUG_CALL("ndp_table_search"); - DEBUG_ARG("ip = %s", addrstr); - - assert(!in6_zero(&ip_addr)); - - /* Multicast address: fec0::abcd:efgh/8 -> 33:33:ab:cd:ef:gh */ - if (IN6_IS_ADDR_MULTICAST(&ip_addr)) { - out_ethaddr[0] = 0x33; out_ethaddr[1] = 0x33; - out_ethaddr[2] = ip_addr.s6_addr[12]; - out_ethaddr[3] = ip_addr.s6_addr[13]; - out_ethaddr[4] = ip_addr.s6_addr[14]; - out_ethaddr[5] = ip_addr.s6_addr[15]; - DEBUG_ARG("multicast addr = %02x:%02x:%02x:%02x:%02x:%02x", - out_ethaddr[0], out_ethaddr[1], out_ethaddr[2], - out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]); - return 1; - } - - for (i = 0; i < NDP_TABLE_SIZE; i++) { - if (in6_equal(&ndp_table->table[i].ip_addr, &ip_addr)) { - memcpy(out_ethaddr, ndp_table->table[i].eth_addr, ETH_ALEN); - DEBUG_ARG("found hw addr = %02x:%02x:%02x:%02x:%02x:%02x", - out_ethaddr[0], out_ethaddr[1], out_ethaddr[2], - out_ethaddr[3], out_ethaddr[4], out_ethaddr[5]); - return 1; - } - } - - DEBUG_CALL(" ip not found in table"); - return 0; -} diff --git a/slirp/src/qtailq.h b/slirp/src/qtailq.h deleted file mode 100644 index d8aa0e19a4..0000000000 --- a/slirp/src/qtailq.h +++ /dev/null @@ -1,194 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* $NetBSD: queue.h,v 1.52 2009/04/20 09:56:08 mschuett Exp $ */ - -/* - * slirp version: Copy from QEMU, removed all but tail queues. - */ - -/* - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)queue.h 8.5 (Berkeley) 8/20/94 - */ - -#ifndef QTAILQ_H -#define QTAILQ_H - -/* - * A tail queue is headed by a pair of pointers, one to the head of the - * list and the other to the tail of the list. The elements are doubly - * linked so that an arbitrary element can be removed without a need to - * traverse the list. New elements can be added to the list before or - * after an existing element, at the head of the list, or at the end of - * the list. A tail queue may be traversed in either direction. - */ -typedef struct QTailQLink { - void *tql_next; - struct QTailQLink *tql_prev; -} QTailQLink; - -/* - * Tail queue definitions. The union acts as a poor man template, as if - * it were QTailQLink<type>. - */ -#define QTAILQ_HEAD(name, type) \ - union name { \ - struct type *tqh_first; /* first element */ \ - QTailQLink tqh_circ; /* link for circular backwards list */ \ - } - -#define QTAILQ_HEAD_INITIALIZER(head) \ - { .tqh_circ = { NULL, &(head).tqh_circ } } - -#define QTAILQ_ENTRY(type) \ - union { \ - struct type *tqe_next; /* next element */ \ - QTailQLink tqe_circ; /* link for circular backwards list */ \ - } - -#define QTAILQ_INIT(head) do { \ - (head)->tqh_first = NULL; \ - (head)->tqh_circ.tql_prev = &(head)->tqh_circ; \ -} while (/*CONSTCOND*/0) - -#define QTAILQ_INSERT_HEAD(head, elm, field) do { \ - if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \ - (head)->tqh_first->field.tqe_circ.tql_prev = \ - &(elm)->field.tqe_circ; \ - else \ - (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \ - (head)->tqh_first = (elm); \ - (elm)->field.tqe_circ.tql_prev = &(head)->tqh_circ; \ -} while (/*CONSTCOND*/0) - -#define QTAILQ_INSERT_TAIL(head, elm, field) do { \ - (elm)->field.tqe_next = NULL; \ - (elm)->field.tqe_circ.tql_prev = (head)->tqh_circ.tql_prev; \ - (head)->tqh_circ.tql_prev->tql_next = (elm); \ - (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \ -} while (/*CONSTCOND*/0) - -#define QTAILQ_INSERT_AFTER(head, listelm, elm, field) do { \ - if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\ - (elm)->field.tqe_next->field.tqe_circ.tql_prev = \ - &(elm)->field.tqe_circ; \ - else \ - (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \ - (listelm)->field.tqe_next = (elm); \ - (elm)->field.tqe_circ.tql_prev = &(listelm)->field.tqe_circ; \ -} while (/*CONSTCOND*/0) - -#define QTAILQ_INSERT_BEFORE(listelm, elm, field) do { \ - (elm)->field.tqe_circ.tql_prev = (listelm)->field.tqe_circ.tql_prev; \ - (elm)->field.tqe_next = (listelm); \ - (listelm)->field.tqe_circ.tql_prev->tql_next = (elm); \ - (listelm)->field.tqe_circ.tql_prev = &(elm)->field.tqe_circ; \ -} while (/*CONSTCOND*/0) - -#define QTAILQ_REMOVE(head, elm, field) do { \ - if (((elm)->field.tqe_next) != NULL) \ - (elm)->field.tqe_next->field.tqe_circ.tql_prev = \ - (elm)->field.tqe_circ.tql_prev; \ - else \ - (head)->tqh_circ.tql_prev = (elm)->field.tqe_circ.tql_prev; \ - (elm)->field.tqe_circ.tql_prev->tql_next = (elm)->field.tqe_next; \ - (elm)->field.tqe_circ.tql_prev = NULL; \ -} while (/*CONSTCOND*/0) - -#define QTAILQ_FOREACH(var, head, field) \ - for ((var) = ((head)->tqh_first); \ - (var); \ - (var) = ((var)->field.tqe_next)) - -#define QTAILQ_FOREACH_SAFE(var, head, field, next_var) \ - for ((var) = ((head)->tqh_first); \ - (var) && ((next_var) = ((var)->field.tqe_next), 1); \ - (var) = (next_var)) - -#define QTAILQ_FOREACH_REVERSE(var, head, field) \ - for ((var) = QTAILQ_LAST(head); \ - (var); \ - (var) = QTAILQ_PREV(var, field)) - -#define QTAILQ_FOREACH_REVERSE_SAFE(var, head, field, prev_var) \ - for ((var) = QTAILQ_LAST(head); \ - (var) && ((prev_var) = QTAILQ_PREV(var, field)); \ - (var) = (prev_var)) - -/* - * Tail queue access methods. - */ -#define QTAILQ_EMPTY(head) ((head)->tqh_first == NULL) -#define QTAILQ_FIRST(head) ((head)->tqh_first) -#define QTAILQ_NEXT(elm, field) ((elm)->field.tqe_next) -#define QTAILQ_IN_USE(elm, field) ((elm)->field.tqe_circ.tql_prev != NULL) - -#define QTAILQ_LINK_PREV(link) \ - ((link).tql_prev->tql_prev->tql_next) -#define QTAILQ_LAST(head) \ - ((typeof((head)->tqh_first)) QTAILQ_LINK_PREV((head)->tqh_circ)) -#define QTAILQ_PREV(elm, field) \ - ((typeof((elm)->field.tqe_next)) QTAILQ_LINK_PREV((elm)->field.tqe_circ)) - -#define field_at_offset(base, offset, type) \ - ((type *) (((char *) (base)) + (offset))) - -/* - * Raw access of elements of a tail queue head. Offsets are all zero - * because it's a union. - */ -#define QTAILQ_RAW_FIRST(head) \ - field_at_offset(head, 0, void *) -#define QTAILQ_RAW_TQH_CIRC(head) \ - field_at_offset(head, 0, QTailQLink) - -/* - * Raw access of elements of a tail entry - */ -#define QTAILQ_RAW_NEXT(elm, entry) \ - field_at_offset(elm, entry, void *) -#define QTAILQ_RAW_TQE_CIRC(elm, entry) \ - field_at_offset(elm, entry, QTailQLink) -/* - * Tail queue traversal using pointer arithmetic. - */ -#define QTAILQ_RAW_FOREACH(elm, head, entry) \ - for ((elm) = *QTAILQ_RAW_FIRST(head); \ - (elm); \ - (elm) = *QTAILQ_RAW_NEXT(elm, entry)) -/* - * Tail queue insertion using pointer arithmetic. - */ -#define QTAILQ_RAW_INSERT_TAIL(head, elm, entry) do { \ - *QTAILQ_RAW_NEXT(elm, entry) = NULL; \ - QTAILQ_RAW_TQE_CIRC(elm, entry)->tql_prev = QTAILQ_RAW_TQH_CIRC(head)->tql_prev; \ - QTAILQ_RAW_TQH_CIRC(head)->tql_prev->tql_next = (elm); \ - QTAILQ_RAW_TQH_CIRC(head)->tql_prev = QTAILQ_RAW_TQE_CIRC(elm, entry); \ -} while (/*CONSTCOND*/0) - -#endif /* QTAILQ_H */ diff --git a/slirp/src/sbuf.c b/slirp/src/sbuf.c deleted file mode 100644 index 9c0b31b513..0000000000 --- a/slirp/src/sbuf.c +++ /dev/null @@ -1,186 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1995 Danny Gasparovski. - */ - -#include "slirp.h" - -static void sbappendsb(struct sbuf *sb, struct mbuf *m); - -void -sbfree(struct sbuf *sb) -{ - free(sb->sb_data); -} - -bool -sbdrop(struct sbuf *sb, int num) -{ - int limit = sb->sb_datalen / 2; - - /* - * We can only drop how much we have - * This should never succeed - */ - if(num > sb->sb_cc) - num = sb->sb_cc; - sb->sb_cc -= num; - sb->sb_rptr += num; - if(sb->sb_rptr >= sb->sb_data + sb->sb_datalen) - sb->sb_rptr -= sb->sb_datalen; - - if (sb->sb_cc < limit && sb->sb_cc + num >= limit) { - return true; - } - - return false; -} - -void -sbreserve(struct sbuf *sb, int size) -{ - if (sb->sb_data) { - /* Already alloced, realloc if necessary */ - if (sb->sb_datalen != size) { - sb->sb_wptr = sb->sb_rptr = sb->sb_data = (char *)realloc(sb->sb_data, size); - sb->sb_cc = 0; - if (sb->sb_wptr) - sb->sb_datalen = size; - else - sb->sb_datalen = 0; - } - } else { - sb->sb_wptr = sb->sb_rptr = sb->sb_data = (char *)malloc(size); - sb->sb_cc = 0; - if (sb->sb_wptr) - sb->sb_datalen = size; - else - sb->sb_datalen = 0; - } -} - -/* - * Try and write() to the socket, whatever doesn't get written - * append to the buffer... for a host with a fast net connection, - * this prevents an unnecessary copy of the data - * (the socket is non-blocking, so we won't hang) - */ -void -sbappend(struct socket *so, struct mbuf *m) -{ - int ret = 0; - - DEBUG_CALL("sbappend"); - DEBUG_ARG("so = %p", so); - DEBUG_ARG("m = %p", m); - DEBUG_ARG("m->m_len = %d", m->m_len); - - /* Shouldn't happen, but... e.g. foreign host closes connection */ - if (m->m_len <= 0) { - m_free(m); - return; - } - - /* - * If there is urgent data, call sosendoob - * if not all was sent, sowrite will take care of the rest - * (The rest of this function is just an optimisation) - */ - if (so->so_urgc) { - sbappendsb(&so->so_rcv, m); - m_free(m); - (void)sosendoob(so); - return; - } - - /* - * We only write if there's nothing in the buffer, - * ottherwise it'll arrive out of order, and hence corrupt - */ - if (!so->so_rcv.sb_cc) - ret = slirp_send(so, m->m_data, m->m_len, 0); - - if (ret <= 0) { - /* - * Nothing was written - * It's possible that the socket has closed, but - * we don't need to check because if it has closed, - * it will be detected in the normal way by soread() - */ - sbappendsb(&so->so_rcv, m); - } else if (ret != m->m_len) { - /* - * Something was written, but not everything.. - * sbappendsb the rest - */ - m->m_len -= ret; - m->m_data += ret; - sbappendsb(&so->so_rcv, m); - } /* else */ - /* Whatever happened, we free the mbuf */ - m_free(m); -} - -/* - * Copy the data from m into sb - * The caller is responsible to make sure there's enough room - */ -static void -sbappendsb(struct sbuf *sb, struct mbuf *m) -{ - int len, n, nn; - - len = m->m_len; - - if (sb->sb_wptr < sb->sb_rptr) { - n = sb->sb_rptr - sb->sb_wptr; - if (n > len) n = len; - memcpy(sb->sb_wptr, m->m_data, n); - } else { - /* Do the right edge first */ - n = sb->sb_data + sb->sb_datalen - sb->sb_wptr; - if (n > len) n = len; - memcpy(sb->sb_wptr, m->m_data, n); - len -= n; - if (len) { - /* Now the left edge */ - nn = sb->sb_rptr - sb->sb_data; - if (nn > len) nn = len; - memcpy(sb->sb_data,m->m_data+n,nn); - n += nn; - } - } - - sb->sb_cc += n; - sb->sb_wptr += n; - if (sb->sb_wptr >= sb->sb_data + sb->sb_datalen) - sb->sb_wptr -= sb->sb_datalen; -} - -/* - * Copy data from sbuf to a normal, straight buffer - * Don't update the sbuf rptr, this will be - * done in sbdrop when the data is acked - */ -void -sbcopy(struct sbuf *sb, int off, int len, char *to) -{ - char *from; - - from = sb->sb_rptr + off; - if (from >= sb->sb_data + sb->sb_datalen) - from -= sb->sb_datalen; - - if (from < sb->sb_wptr) { - if (len > sb->sb_cc) len = sb->sb_cc; - memcpy(to,from,len); - } else { - /* re-use off */ - off = (sb->sb_data + sb->sb_datalen) - from; - if (off > len) off = len; - memcpy(to,from,off); - len -= off; - if (len) - memcpy(to+off,sb->sb_data,len); - } -} diff --git a/slirp/src/sbuf.h b/slirp/src/sbuf.h deleted file mode 100644 index 337af1bbde..0000000000 --- a/slirp/src/sbuf.h +++ /dev/null @@ -1,27 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1995 Danny Gasparovski. - */ - -#ifndef SBUF_H -#define SBUF_H - -#define sbspace(sb) ((sb)->sb_datalen - (sb)->sb_cc) - -struct sbuf { - uint32_t sb_cc; /* actual chars in buffer */ - uint32_t sb_datalen; /* Length of data */ - char *sb_wptr; /* write pointer. points to where the next - * bytes should be written in the sbuf */ - char *sb_rptr; /* read pointer. points to where the next - * byte should be read from the sbuf */ - char *sb_data; /* Actual data */ -}; - -void sbfree(struct sbuf *); -bool sbdrop(struct sbuf *, int); -void sbreserve(struct sbuf *, int); -void sbappend(struct socket *, struct mbuf *); -void sbcopy(struct sbuf *, int, int, char *); - -#endif diff --git a/slirp/src/slirp.c b/slirp/src/slirp.c deleted file mode 100644 index 169c85b906..0000000000 --- a/slirp/src/slirp.c +++ /dev/null @@ -1,1118 +0,0 @@ -/* SPDX-License-Identifier: MIT */ -/* - * libslirp glue - * - * Copyright (c) 2004-2008 Fabrice Bellard - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "slirp.h" - - -#ifndef _WIN32 -#include <net/if.h> -#endif - -int slirp_debug; - -/* Define to 1 if you want KEEPALIVE timers */ -bool slirp_do_keepalive; - -/* host loopback address */ -struct in_addr loopback_addr; -/* host loopback network mask */ -unsigned long loopback_mask; - -/* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */ -static const uint8_t special_ethaddr[ETH_ALEN] = { - 0x52, 0x55, 0x00, 0x00, 0x00, 0x00 -}; - -unsigned curtime; - -static struct in_addr dns_addr; -#ifndef _WIN32 -static struct in6_addr dns6_addr; -#endif -static unsigned dns_addr_time; -#ifndef _WIN32 -static unsigned dns6_addr_time; -#endif - -#define TIMEOUT_FAST 2 /* milliseconds */ -#define TIMEOUT_SLOW 499 /* milliseconds */ -/* for the aging of certain requests like DNS */ -#define TIMEOUT_DEFAULT 1000 /* milliseconds */ - -#ifdef _WIN32 - -int get_dns_addr(struct in_addr *pdns_addr) -{ - FIXED_INFO *FixedInfo=NULL; - ULONG BufLen; - DWORD ret; - IP_ADDR_STRING *pIPAddr; - struct in_addr tmp_addr; - - if (dns_addr.s_addr != 0 && (curtime - dns_addr_time) < TIMEOUT_DEFAULT) { - *pdns_addr = dns_addr; - return 0; - } - - FixedInfo = (FIXED_INFO *)GlobalAlloc(GPTR, sizeof(FIXED_INFO)); - BufLen = sizeof(FIXED_INFO); - - if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &BufLen)) { - if (FixedInfo) { - GlobalFree(FixedInfo); - FixedInfo = NULL; - } - FixedInfo = GlobalAlloc(GPTR, BufLen); - } - - if ((ret = GetNetworkParams(FixedInfo, &BufLen)) != ERROR_SUCCESS) { - printf("GetNetworkParams failed. ret = %08x\n", (unsigned)ret ); - if (FixedInfo) { - GlobalFree(FixedInfo); - FixedInfo = NULL; - } - return -1; - } - - pIPAddr = &(FixedInfo->DnsServerList); - inet_aton(pIPAddr->IpAddress.String, &tmp_addr); - *pdns_addr = tmp_addr; - dns_addr = tmp_addr; - dns_addr_time = curtime; - if (FixedInfo) { - GlobalFree(FixedInfo); - FixedInfo = NULL; - } - return 0; -} - -int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id) -{ - return -1; -} - -static void winsock_cleanup(void) -{ - WSACleanup(); -} - -#else - -static int get_dns_addr_cached(void *pdns_addr, void *cached_addr, - socklen_t addrlen, - struct stat *cached_stat, unsigned *cached_time) -{ - struct stat old_stat; - if (curtime - *cached_time < TIMEOUT_DEFAULT) { - memcpy(pdns_addr, cached_addr, addrlen); - return 0; - } - old_stat = *cached_stat; - if (stat("/etc/resolv.conf", cached_stat) != 0) { - return -1; - } - if (cached_stat->st_dev == old_stat.st_dev - && cached_stat->st_ino == old_stat.st_ino - && cached_stat->st_size == old_stat.st_size - && cached_stat->st_mtime == old_stat.st_mtime) { - memcpy(pdns_addr, cached_addr, addrlen); - return 0; - } - return 1; -} - -static int get_dns_addr_resolv_conf(int af, void *pdns_addr, void *cached_addr, - socklen_t addrlen, uint32_t *scope_id, - unsigned *cached_time) -{ - char buff[512]; - char buff2[257]; - FILE *f; - int found = 0; - void *tmp_addr = alloca(addrlen); - unsigned if_index; - - f = fopen("/etc/resolv.conf", "r"); - if (!f) - return -1; - - DEBUG_MISC("IP address of your DNS(s):"); - while (fgets(buff, 512, f) != NULL) { - if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) { - char *c = strchr(buff2, '%'); - if (c) { - if_index = if_nametoindex(c + 1); - *c = '\0'; - } else { - if_index = 0; - } - - if (!inet_pton(af, buff2, tmp_addr)) { - continue; - } - /* If it's the first one, set it to dns_addr */ - if (!found) { - memcpy(pdns_addr, tmp_addr, addrlen); - memcpy(cached_addr, tmp_addr, addrlen); - if (scope_id) { - *scope_id = if_index; - } - *cached_time = curtime; - } - - if (++found > 3) { - DEBUG_MISC(" (more)"); - break; - } else if (slirp_debug & DBG_MISC) { - char s[INET6_ADDRSTRLEN]; - const char *res = inet_ntop(af, tmp_addr, s, sizeof(s)); - if (!res) { - res = " (string conversion error)"; - } - DEBUG_MISC(" %s", res); - } - } - } - fclose(f); - if (!found) - return -1; - return 0; -} - -int get_dns_addr(struct in_addr *pdns_addr) -{ - static struct stat dns_addr_stat; - - if (dns_addr.s_addr != 0) { - int ret; - ret = get_dns_addr_cached(pdns_addr, &dns_addr, sizeof(dns_addr), - &dns_addr_stat, &dns_addr_time); - if (ret <= 0) { - return ret; - } - } - return get_dns_addr_resolv_conf(AF_INET, pdns_addr, &dns_addr, - sizeof(dns_addr), NULL, &dns_addr_time); -} - -int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id) -{ - static struct stat dns6_addr_stat; - - if (!in6_zero(&dns6_addr)) { - int ret; - ret = get_dns_addr_cached(pdns6_addr, &dns6_addr, sizeof(dns6_addr), - &dns6_addr_stat, &dns6_addr_time); - if (ret <= 0) { - return ret; - } - } - return get_dns_addr_resolv_conf(AF_INET6, pdns6_addr, &dns6_addr, - sizeof(dns6_addr), - scope_id, &dns6_addr_time); -} - -#endif - -static void slirp_init_once(void) -{ - static int initialized; - const char *debug; -#ifdef _WIN32 - WSADATA Data; -#endif - - if (initialized) { - return; - } - initialized = 1; - -#ifdef _WIN32 - WSAStartup(MAKEWORD(2,0), &Data); - atexit(winsock_cleanup); -#endif - - loopback_addr.s_addr = htonl(INADDR_LOOPBACK); - loopback_mask = htonl(IN_CLASSA_NET); - - debug = g_getenv("SLIRP_DEBUG"); - if (debug) { - const GDebugKey keys[] = { - { "call", DBG_CALL }, - { "misc", DBG_MISC }, - { "error", DBG_ERROR }, - { "tftp", DBG_TFTP }, - }; - slirp_debug = g_parse_debug_string(debug, keys, G_N_ELEMENTS(keys)); - } - - -} - -Slirp *slirp_init(int restricted, bool in_enabled, struct in_addr vnetwork, - struct in_addr vnetmask, struct in_addr vhost, - bool in6_enabled, - struct in6_addr vprefix_addr6, uint8_t vprefix_len, - struct in6_addr vhost6, const char *vhostname, - const char *tftp_server_name, - const char *tftp_path, const char *bootfile, - struct in_addr vdhcp_start, struct in_addr vnameserver, - struct in6_addr vnameserver6, const char **vdnssearch, - const char *vdomainname, - const SlirpCb *callbacks, - void *opaque) -{ - Slirp *slirp = g_malloc0(sizeof(Slirp)); - - slirp_init_once(); - - slirp->opaque = opaque; - slirp->cb = callbacks; - slirp->grand = g_rand_new(); - slirp->restricted = restricted; - - slirp->in_enabled = in_enabled; - slirp->in6_enabled = in6_enabled; - - if_init(slirp); - ip_init(slirp); - ip6_init(slirp); - - /* Initialise mbufs *after* setting the MTU */ - m_init(slirp); - - slirp->vnetwork_addr = vnetwork; - slirp->vnetwork_mask = vnetmask; - slirp->vhost_addr = vhost; - slirp->vprefix_addr6 = vprefix_addr6; - slirp->vprefix_len = vprefix_len; - slirp->vhost_addr6 = vhost6; - if (vhostname) { - slirp_pstrcpy(slirp->client_hostname, sizeof(slirp->client_hostname), - vhostname); - } - slirp->tftp_prefix = g_strdup(tftp_path); - slirp->bootp_filename = g_strdup(bootfile); - slirp->vdomainname = g_strdup(vdomainname); - slirp->vdhcp_startaddr = vdhcp_start; - slirp->vnameserver_addr = vnameserver; - slirp->vnameserver_addr6 = vnameserver6; - slirp->tftp_server_name = g_strdup(tftp_server_name); - - if (vdnssearch) { - translate_dnssearch(slirp, vdnssearch); - } - - return slirp; -} - -void slirp_cleanup(Slirp *slirp) -{ - struct gfwd_list *e, *next; - - for (e = slirp->guestfwd_list; e; e = next) { - next = e->ex_next; - g_free(e->ex_exec); - g_free(e); - } - - ip_cleanup(slirp); - ip6_cleanup(slirp); - m_cleanup(slirp); - - g_rand_free(slirp->grand); - - g_free(slirp->vdnssearch); - g_free(slirp->tftp_prefix); - g_free(slirp->bootp_filename); - g_free(slirp->vdomainname); - g_free(slirp); -} - -#define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) -#define CONN_CANFRCV(so) (((so)->so_state & (SS_FCANTRCVMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) - -static void slirp_update_timeout(Slirp *slirp, uint32_t *timeout) -{ - uint32_t t; - - if (*timeout <= TIMEOUT_FAST) { - return; - } - - t = MIN(1000, *timeout); - - /* If we have tcp timeout with slirp, then we will fill @timeout with - * more precise value. - */ - if (slirp->time_fasttimo) { - *timeout = TIMEOUT_FAST; - return; - } - if (slirp->do_slowtimo) { - t = MIN(TIMEOUT_SLOW, t); - } - *timeout = t; -} - -void slirp_pollfds_fill(Slirp *slirp, uint32_t *timeout, - SlirpAddPollCb add_poll, void *opaque) -{ - struct socket *so, *so_next; - - /* - * First, TCP sockets - */ - - /* - * *_slowtimo needs calling if there are IP fragments - * in the fragment queue, or there are TCP connections active - */ - slirp->do_slowtimo = ((slirp->tcb.so_next != &slirp->tcb) || - (&slirp->ipq.ip_link != slirp->ipq.ip_link.next)); - - for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so_next) { - int events = 0; - - so_next = so->so_next; - - so->pollfds_idx = -1; - - /* - * See if we need a tcp_fasttimo - */ - if (slirp->time_fasttimo == 0 && - so->so_tcpcb->t_flags & TF_DELACK) { - slirp->time_fasttimo = curtime; /* Flag when want a fasttimo */ - } - - /* - * NOFDREF can include still connecting to local-host, - * newly socreated() sockets etc. Don't want to select these. - */ - if (so->so_state & SS_NOFDREF || so->s == -1) { - continue; - } - - /* - * Set for reading sockets which are accepting - */ - if (so->so_state & SS_FACCEPTCONN) { - so->pollfds_idx = add_poll(so->s, - SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR, opaque); - continue; - } - - /* - * Set for writing sockets which are connecting - */ - if (so->so_state & SS_ISFCONNECTING) { - so->pollfds_idx = add_poll(so->s, - SLIRP_POLL_OUT | SLIRP_POLL_ERR, opaque); - continue; - } - - /* - * Set for writing if we are connected, can send more, and - * we have something to send - */ - if (CONN_CANFSEND(so) && so->so_rcv.sb_cc) { - events |= SLIRP_POLL_OUT | SLIRP_POLL_ERR; - } - - /* - * Set for reading (and urgent data) if we are connected, can - * receive more, and we have room for it XXX /2 ? - */ - if (CONN_CANFRCV(so) && - (so->so_snd.sb_cc < (so->so_snd.sb_datalen/2))) { - events |= SLIRP_POLL_IN | SLIRP_POLL_HUP | - SLIRP_POLL_ERR | SLIRP_POLL_PRI; - } - - if (events) { - so->pollfds_idx = add_poll(so->s, events, opaque); - } - } - - /* - * UDP sockets - */ - for (so = slirp->udb.so_next; so != &slirp->udb; so = so_next) { - so_next = so->so_next; - - so->pollfds_idx = -1; - - /* - * See if it's timed out - */ - if (so->so_expire) { - if (so->so_expire <= curtime) { - udp_detach(so); - continue; - } else { - slirp->do_slowtimo = true; /* Let socket expire */ - } - } - - /* - * When UDP packets are received from over the - * link, they're sendto()'d straight away, so - * no need for setting for writing - * Limit the number of packets queued by this session - * to 4. Note that even though we try and limit this - * to 4 packets, the session could have more queued - * if the packets needed to be fragmented - * (XXX <= 4 ?) - */ - if ((so->so_state & SS_ISFCONNECTED) && so->so_queued <= 4) { - so->pollfds_idx = add_poll(so->s, - SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR, opaque); - } - } - - /* - * ICMP sockets - */ - for (so = slirp->icmp.so_next; so != &slirp->icmp; so = so_next) { - so_next = so->so_next; - - so->pollfds_idx = -1; - - /* - * See if it's timed out - */ - if (so->so_expire) { - if (so->so_expire <= curtime) { - icmp_detach(so); - continue; - } else { - slirp->do_slowtimo = true; /* Let socket expire */ - } - } - - if (so->so_state & SS_ISFCONNECTED) { - so->pollfds_idx = add_poll(so->s, - SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR, opaque); - } - } - - slirp_update_timeout(slirp, timeout); -} - -void slirp_pollfds_poll(Slirp *slirp, int select_error, - SlirpGetREventsCb get_revents, void *opaque) -{ - struct socket *so, *so_next; - int ret; - - curtime = slirp->cb->clock_get_ns(slirp->opaque) / SCALE_MS; - - /* - * See if anything has timed out - */ - if (slirp->time_fasttimo && - ((curtime - slirp->time_fasttimo) >= TIMEOUT_FAST)) { - tcp_fasttimo(slirp); - slirp->time_fasttimo = 0; - } - if (slirp->do_slowtimo && - ((curtime - slirp->last_slowtimo) >= TIMEOUT_SLOW)) { - ip_slowtimo(slirp); - tcp_slowtimo(slirp); - slirp->last_slowtimo = curtime; - } - - /* - * Check sockets - */ - if (!select_error) { - /* - * Check TCP sockets - */ - for (so = slirp->tcb.so_next; so != &slirp->tcb; - so = so_next) { - int revents; - - so_next = so->so_next; - - revents = 0; - if (so->pollfds_idx != -1) { - revents = get_revents(so->pollfds_idx, opaque); - } - - if (so->so_state & SS_NOFDREF || so->s == -1) { - continue; - } - - /* - * Check for URG data - * This will soread as well, so no need to - * test for SLIRP_POLL_IN below if this succeeds - */ - if (revents & SLIRP_POLL_PRI) { - ret = sorecvoob(so); - if (ret < 0) { - /* Socket error might have resulted in the socket being - * removed, do not try to do anything more with it. */ - continue; - } - } - /* - * Check sockets for reading - */ - else if (revents & - (SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR)) { - /* - * Check for incoming connections - */ - if (so->so_state & SS_FACCEPTCONN) { - tcp_connect(so); - continue; - } /* else */ - ret = soread(so); - - /* Output it if we read something */ - if (ret > 0) { - tcp_output(sototcpcb(so)); - } - if (ret < 0) { - /* Socket error might have resulted in the socket being - * removed, do not try to do anything more with it. */ - continue; - } - } - - /* - * Check sockets for writing - */ - if (!(so->so_state & SS_NOFDREF) && - (revents & (SLIRP_POLL_OUT | SLIRP_POLL_ERR))) { - /* - * Check for non-blocking, still-connecting sockets - */ - if (so->so_state & SS_ISFCONNECTING) { - /* Connected */ - so->so_state &= ~SS_ISFCONNECTING; - - ret = send(so->s, (const void *) &ret, 0, 0); - if (ret < 0) { - /* XXXXX Must fix, zero bytes is a NOP */ - if (errno == EAGAIN || errno == EWOULDBLOCK || - errno == EINPROGRESS || errno == ENOTCONN) { - continue; - } - - /* else failed */ - so->so_state &= SS_PERSISTENT_MASK; - so->so_state |= SS_NOFDREF; - } - /* else so->so_state &= ~SS_ISFCONNECTING; */ - - /* - * Continue tcp_input - */ - tcp_input((struct mbuf *)NULL, sizeof(struct ip), so, - so->so_ffamily); - /* continue; */ - } else { - ret = sowrite(so); - if (ret > 0) { - /* Call tcp_output in case we need to send a window - * update to the guest, otherwise it will be stuck - * until it sends a window probe. */ - tcp_output(sototcpcb(so)); - } - } - } - } - - /* - * Now UDP sockets. - * Incoming packets are sent straight away, they're not buffered. - * Incoming UDP data isn't buffered either. - */ - for (so = slirp->udb.so_next; so != &slirp->udb; - so = so_next) { - int revents; - - so_next = so->so_next; - - revents = 0; - if (so->pollfds_idx != -1) { - revents = get_revents(so->pollfds_idx, opaque); - } - - if (so->s != -1 && - (revents & (SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR))) { - sorecvfrom(so); - } - } - - /* - * Check incoming ICMP relies. - */ - for (so = slirp->icmp.so_next; so != &slirp->icmp; - so = so_next) { - int revents; - - so_next = so->so_next; - - revents = 0; - if (so->pollfds_idx != -1) { - revents = get_revents(so->pollfds_idx, opaque); - } - - if (so->s != -1 && - (revents & (SLIRP_POLL_IN | SLIRP_POLL_HUP | SLIRP_POLL_ERR))) { - icmp_receive(so); - } - } - } - - if_start(slirp); -} - -static void arp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) -{ - struct slirp_arphdr *ah = (struct slirp_arphdr *)(pkt + ETH_HLEN); - uint8_t arp_reply[MAX(ETH_HLEN + sizeof(struct slirp_arphdr), 64)]; - struct ethhdr *reh = (struct ethhdr *)arp_reply; - struct slirp_arphdr *rah = (struct slirp_arphdr *)(arp_reply + ETH_HLEN); - int ar_op; - struct gfwd_list *ex_ptr; - - if (!slirp->in_enabled) { - return; - } - - ar_op = ntohs(ah->ar_op); - switch(ar_op) { - case ARPOP_REQUEST: - if (ah->ar_tip == ah->ar_sip) { - /* Gratuitous ARP */ - arp_table_add(slirp, ah->ar_sip, ah->ar_sha); - return; - } - - if ((ah->ar_tip & slirp->vnetwork_mask.s_addr) == - slirp->vnetwork_addr.s_addr) { - if (ah->ar_tip == slirp->vnameserver_addr.s_addr || - ah->ar_tip == slirp->vhost_addr.s_addr) - goto arp_ok; - /* TODO: IPv6 */ - for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { - if (ex_ptr->ex_addr.s_addr == ah->ar_tip) - goto arp_ok; - } - return; - arp_ok: - memset(arp_reply, 0, sizeof(arp_reply)); - - arp_table_add(slirp, ah->ar_sip, ah->ar_sha); - - /* ARP request for alias/dns mac address */ - memcpy(reh->h_dest, pkt + ETH_ALEN, ETH_ALEN); - memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); - memcpy(&reh->h_source[2], &ah->ar_tip, 4); - reh->h_proto = htons(ETH_P_ARP); - - rah->ar_hrd = htons(1); - rah->ar_pro = htons(ETH_P_IP); - rah->ar_hln = ETH_ALEN; - rah->ar_pln = 4; - rah->ar_op = htons(ARPOP_REPLY); - memcpy(rah->ar_sha, reh->h_source, ETH_ALEN); - rah->ar_sip = ah->ar_tip; - memcpy(rah->ar_tha, ah->ar_sha, ETH_ALEN); - rah->ar_tip = ah->ar_sip; - slirp_send_packet_all(slirp, arp_reply, sizeof(arp_reply)); - } - break; - case ARPOP_REPLY: - arp_table_add(slirp, ah->ar_sip, ah->ar_sha); - break; - default: - break; - } -} - -void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) -{ - struct mbuf *m; - int proto; - - if (pkt_len < ETH_HLEN) - return; - - proto = (((uint16_t) pkt[12]) << 8) + pkt[13]; - switch(proto) { - case ETH_P_ARP: - arp_input(slirp, pkt, pkt_len); - break; - case ETH_P_IP: - case ETH_P_IPV6: - m = m_get(slirp); - if (!m) - return; - /* Note: we add 2 to align the IP header on 4 bytes, - * and add the margin for the tcpiphdr overhead */ - if (M_FREEROOM(m) < pkt_len + TCPIPHDR_DELTA + 2) { - m_inc(m, pkt_len + TCPIPHDR_DELTA + 2); - } - m->m_len = pkt_len + TCPIPHDR_DELTA + 2; - memcpy(m->m_data + TCPIPHDR_DELTA + 2, pkt, pkt_len); - - m->m_data += TCPIPHDR_DELTA + 2 + ETH_HLEN; - m->m_len -= TCPIPHDR_DELTA + 2 + ETH_HLEN; - - if (proto == ETH_P_IP) { - ip_input(m); - } else if (proto == ETH_P_IPV6) { - ip6_input(m); - } - break; - - case ETH_P_NCSI: - ncsi_input(slirp, pkt, pkt_len); - break; - - default: - break; - } -} - -/* Prepare the IPv4 packet to be sent to the ethernet device. Returns 1 if no - * packet should be sent, 0 if the packet must be re-queued, 2 if the packet - * is ready to go. - */ -static int if_encap4(Slirp *slirp, struct mbuf *ifm, struct ethhdr *eh, - uint8_t ethaddr[ETH_ALEN]) -{ - const struct ip *iph = (const struct ip *)ifm->m_data; - - if (iph->ip_dst.s_addr == 0) { - /* 0.0.0.0 can not be a destination address, something went wrong, - * avoid making it worse */ - return 1; - } - if (!arp_table_search(slirp, iph->ip_dst.s_addr, ethaddr)) { - uint8_t arp_req[ETH_HLEN + sizeof(struct slirp_arphdr)]; - struct ethhdr *reh = (struct ethhdr *)arp_req; - struct slirp_arphdr *rah = (struct slirp_arphdr *)(arp_req + ETH_HLEN); - - if (!ifm->resolution_requested) { - /* If the client addr is not known, send an ARP request */ - memset(reh->h_dest, 0xff, ETH_ALEN); - memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); - memcpy(&reh->h_source[2], &slirp->vhost_addr, 4); - reh->h_proto = htons(ETH_P_ARP); - rah->ar_hrd = htons(1); - rah->ar_pro = htons(ETH_P_IP); - rah->ar_hln = ETH_ALEN; - rah->ar_pln = 4; - rah->ar_op = htons(ARPOP_REQUEST); - - /* source hw addr */ - memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 4); - memcpy(&rah->ar_sha[2], &slirp->vhost_addr, 4); - - /* source IP */ - rah->ar_sip = slirp->vhost_addr.s_addr; - - /* target hw addr (none) */ - memset(rah->ar_tha, 0, ETH_ALEN); - - /* target IP */ - rah->ar_tip = iph->ip_dst.s_addr; - slirp->client_ipaddr = iph->ip_dst; - slirp_send_packet_all(slirp, arp_req, sizeof(arp_req)); - ifm->resolution_requested = true; - - /* Expire request and drop outgoing packet after 1 second */ - ifm->expiration_date = - slirp->cb->clock_get_ns(slirp->opaque) + 1000000000ULL; - } - return 0; - } else { - memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 4); - /* XXX: not correct */ - memcpy(&eh->h_source[2], &slirp->vhost_addr, 4); - eh->h_proto = htons(ETH_P_IP); - - /* Send this */ - return 2; - } -} - -/* Prepare the IPv6 packet to be sent to the ethernet device. Returns 1 if no - * packet should be sent, 0 if the packet must be re-queued, 2 if the packet - * is ready to go. - */ -static int if_encap6(Slirp *slirp, struct mbuf *ifm, struct ethhdr *eh, - uint8_t ethaddr[ETH_ALEN]) -{ - const struct ip6 *ip6h = mtod(ifm, const struct ip6 *); - if (!ndp_table_search(slirp, ip6h->ip_dst, ethaddr)) { - if (!ifm->resolution_requested) { - ndp_send_ns(slirp, ip6h->ip_dst); - ifm->resolution_requested = true; - ifm->expiration_date = slirp->cb->clock_get_ns(slirp->opaque) + 1000000000ULL; - } - return 0; - } else { - eh->h_proto = htons(ETH_P_IPV6); - in6_compute_ethaddr(ip6h->ip_src, eh->h_source); - - /* Send this */ - return 2; - } -} - -/* Output the IP packet to the ethernet device. Returns 0 if the packet must be - * re-queued. - */ -int if_encap(Slirp *slirp, struct mbuf *ifm) -{ - uint8_t buf[1600]; - struct ethhdr *eh = (struct ethhdr *)buf; - uint8_t ethaddr[ETH_ALEN]; - const struct ip *iph = (const struct ip *)ifm->m_data; - int ret; - - if (ifm->m_len + ETH_HLEN > sizeof(buf)) { - return 1; - } - - switch (iph->ip_v) { - case IPVERSION: - ret = if_encap4(slirp, ifm, eh, ethaddr); - if (ret < 2) { - return ret; - } - break; - - case IP6VERSION: - ret = if_encap6(slirp, ifm, eh, ethaddr); - if (ret < 2) { - return ret; - } - break; - - default: - g_assert_not_reached(); - break; - } - - memcpy(eh->h_dest, ethaddr, ETH_ALEN); - DEBUG_ARG("src = %02x:%02x:%02x:%02x:%02x:%02x", - eh->h_source[0], eh->h_source[1], eh->h_source[2], - eh->h_source[3], eh->h_source[4], eh->h_source[5]); - DEBUG_ARG("dst = %02x:%02x:%02x:%02x:%02x:%02x", - eh->h_dest[0], eh->h_dest[1], eh->h_dest[2], - eh->h_dest[3], eh->h_dest[4], eh->h_dest[5]); - memcpy(buf + sizeof(struct ethhdr), ifm->m_data, ifm->m_len); - slirp_send_packet_all(slirp, buf, ifm->m_len + ETH_HLEN); - return 1; -} - -/* Drop host forwarding rule, return 0 if found. */ -/* TODO: IPv6 */ -int slirp_remove_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, - int host_port) -{ - struct socket *so; - struct socket *head = (is_udp ? &slirp->udb : &slirp->tcb); - struct sockaddr_in addr; - int port = htons(host_port); - socklen_t addr_len; - - for (so = head->so_next; so != head; so = so->so_next) { - addr_len = sizeof(addr); - if ((so->so_state & SS_HOSTFWD) && - getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 && - addr.sin_addr.s_addr == host_addr.s_addr && - addr.sin_port == port) { - so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque); - closesocket(so->s); - sofree(so); - return 0; - } - } - - return -1; -} - -/* TODO: IPv6 */ -int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, - int host_port, struct in_addr guest_addr, int guest_port) -{ - if (!guest_addr.s_addr) { - guest_addr = slirp->vdhcp_startaddr; - } - if (is_udp) { - if (!udp_listen(slirp, host_addr.s_addr, htons(host_port), - guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) - return -1; - } else { - if (!tcp_listen(slirp, host_addr.s_addr, htons(host_port), - guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) - return -1; - } - return 0; -} - -/* TODO: IPv6 */ -static bool -check_guestfwd(Slirp *slirp, struct in_addr *guest_addr, int guest_port) -{ - struct gfwd_list *tmp_ptr; - - if (!guest_addr->s_addr) { - guest_addr->s_addr = slirp->vnetwork_addr.s_addr | - (htonl(0x0204) & ~slirp->vnetwork_mask.s_addr); - } - if ((guest_addr->s_addr & slirp->vnetwork_mask.s_addr) != - slirp->vnetwork_addr.s_addr || - guest_addr->s_addr == slirp->vhost_addr.s_addr || - guest_addr->s_addr == slirp->vnameserver_addr.s_addr) { - return false; - } - - /* check if the port is "bound" */ - for (tmp_ptr = slirp->guestfwd_list; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) { - if (guest_port == tmp_ptr->ex_fport && - guest_addr->s_addr == tmp_ptr->ex_addr.s_addr) - return false; - } - - return true; -} - -int slirp_add_exec(Slirp *slirp, const char *cmdline, - struct in_addr *guest_addr, int guest_port) -{ - if (!check_guestfwd(slirp, guest_addr, guest_port)) { - return -1; - } - - add_exec(&slirp->guestfwd_list, cmdline, *guest_addr, htons(guest_port)); - return 0; -} - -int slirp_add_guestfwd(Slirp *slirp, SlirpWriteCb write_cb, void *opaque, - struct in_addr *guest_addr, int guest_port) -{ - if (!check_guestfwd(slirp, guest_addr, guest_port)) { - return -1; - } - - add_guestfwd(&slirp->guestfwd_list, write_cb, opaque, - *guest_addr, htons(guest_port)); - return 0; -} - -ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags) -{ - if (so->s == -1 && so->guestfwd) { - /* XXX this blocks entire thread. Rewrite to use - * qemu_chr_fe_write and background I/O callbacks */ - so->guestfwd->write_cb(buf, len, so->guestfwd->opaque); - return len; - } - - if (so->s == -1) { - /* - * This should in theory not happen but it is hard to be - * sure because some code paths will end up with so->s == -1 - * on a failure but don't dispose of the struct socket. - * Check specifically, so we don't pass -1 to send(). - */ - errno = EBADF; - return -1; - } - - return send(so->s, buf, len, flags); -} - -struct socket * -slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port) -{ - struct socket *so; - - /* TODO: IPv6 */ - for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) { - if (so->so_faddr.s_addr == guest_addr.s_addr && - htons(so->so_fport) == guest_port) { - return so; - } - } - return NULL; -} - -size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr, - int guest_port) -{ - struct iovec iov[2]; - struct socket *so; - - so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); - - if (!so || so->so_state & SS_NOFDREF) { - return 0; - } - - if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2)) { - return 0; - } - - return sopreprbuf(so, iov, NULL); -} - -void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port, - const uint8_t *buf, int size) -{ - int ret; - struct socket *so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); - - if (!so) - return; - - ret = soreadbuf(so, (const char *)buf, size); - - if (ret > 0) - tcp_output(sototcpcb(so)); -} - -void slirp_send_packet_all(Slirp *slirp, const void *buf, size_t len) -{ - ssize_t ret = slirp->cb->send_packet(buf, len, slirp->opaque); - - if (ret < 0) { - g_critical("Failed to send packet, ret: %ld", (long) ret); - } else if (ret < len) { - DEBUG_ERROR("send_packet() didn't send all data: %ld < %lu", - (long) ret, (unsigned long) len); - } -} diff --git a/slirp/src/slirp.h b/slirp/src/slirp.h deleted file mode 100644 index 39580934f3..0000000000 --- a/slirp/src/slirp.h +++ /dev/null @@ -1,275 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -#ifndef SLIRP_H -#define SLIRP_H - -#ifdef _WIN32 - -/* as defined in sdkddkver.h */ -#ifndef _WIN32_WINNT -#define _WIN32_WINNT 0x0600 /* Vista */ -#endif -/* reduces the number of implicitly included headers */ -#ifndef WIN32_LEAN_AND_MEAN -#define WIN32_LEAN_AND_MEAN -#endif - -# include <winsock2.h> -# include <windows.h> -# include <ws2tcpip.h> -# include <sys/timeb.h> -# include <iphlpapi.h> - -#else -# if !defined(__HAIKU__) -# define O_BINARY 0 -# endif -#endif - -#ifndef _WIN32 -#include <sys/uio.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <sys/socket.h> -#include <sys/ioctl.h> -#endif - -#ifdef __APPLE__ -# include <sys/filio.h> -#endif - -/* Avoid conflicting with the libc insque() and remque(), which - have different prototypes. */ -#define insque slirp_insque -#define remque slirp_remque -#define quehead slirp_quehead - -#include "debug.h" -#include "util.h" -#include "qtailq.h" - -#include "libslirp.h" -#include "ip.h" -#include "ip6.h" -#include "tcp.h" -#include "tcp_timer.h" -#include "tcp_var.h" -#include "tcpip.h" -#include "udp.h" -#include "ip_icmp.h" -#include "ip6_icmp.h" -#include "mbuf.h" -#include "sbuf.h" -#include "socket.h" -#include "if.h" -#include "main.h" -#include "misc.h" - -#include "bootp.h" -#include "tftp.h" - -#define ARPOP_REQUEST 1 /* ARP request */ -#define ARPOP_REPLY 2 /* ARP reply */ - -struct ethhdr { - unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ - unsigned char h_source[ETH_ALEN]; /* source ether addr */ - unsigned short h_proto; /* packet type ID field */ -}; - -struct slirp_arphdr { - unsigned short ar_hrd; /* format of hardware address */ - unsigned short ar_pro; /* format of protocol address */ - unsigned char ar_hln; /* length of hardware address */ - unsigned char ar_pln; /* length of protocol address */ - unsigned short ar_op; /* ARP opcode (command) */ - - /* - * Ethernet looks like this : This bit is variable sized however... - */ - unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */ - uint32_t ar_sip; /* sender IP address */ - unsigned char ar_tha[ETH_ALEN]; /* target hardware address */ - uint32_t ar_tip; /* target IP address */ -} SLIRP_PACKED; - -#define ARP_TABLE_SIZE 16 - -typedef struct ArpTable { - struct slirp_arphdr table[ARP_TABLE_SIZE]; - int next_victim; -} ArpTable; - -void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]); - -bool arp_table_search(Slirp *slirp, uint32_t ip_addr, - uint8_t out_ethaddr[ETH_ALEN]); - -struct ndpentry { - unsigned char eth_addr[ETH_ALEN]; /* sender hardware address */ - struct in6_addr ip_addr; /* sender IP address */ -}; - -#define NDP_TABLE_SIZE 16 - -typedef struct NdpTable { - struct ndpentry table[NDP_TABLE_SIZE]; - int next_victim; -} NdpTable; - -void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr, - uint8_t ethaddr[ETH_ALEN]); -bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr, - uint8_t out_ethaddr[ETH_ALEN]); - -struct Slirp { - QTAILQ_ENTRY(Slirp) entry; - unsigned time_fasttimo; - unsigned last_slowtimo; - bool do_slowtimo; - - bool in_enabled, in6_enabled; - - /* virtual network configuration */ - struct in_addr vnetwork_addr; - struct in_addr vnetwork_mask; - struct in_addr vhost_addr; - struct in6_addr vprefix_addr6; - uint8_t vprefix_len; - struct in6_addr vhost_addr6; - struct in_addr vdhcp_startaddr; - struct in_addr vnameserver_addr; - struct in6_addr vnameserver_addr6; - - struct in_addr client_ipaddr; - char client_hostname[33]; - - int restricted; - struct gfwd_list *guestfwd_list; - - /* mbuf states */ - struct quehead m_freelist; - struct quehead m_usedlist; - int mbuf_alloced; - - /* if states */ - struct quehead if_fastq; /* fast queue (for interactive data) */ - struct quehead if_batchq; /* queue for non-interactive data */ - bool if_start_busy; /* avoid if_start recursion */ - - /* ip states */ - struct ipq ipq; /* ip reass. queue */ - uint16_t ip_id; /* ip packet ctr, for ids */ - - /* bootp/dhcp states */ - BOOTPClient bootp_clients[NB_BOOTP_CLIENTS]; - char *bootp_filename; - size_t vdnssearch_len; - uint8_t *vdnssearch; - char *vdomainname; - - /* tcp states */ - struct socket tcb; - struct socket *tcp_last_so; - tcp_seq tcp_iss; /* tcp initial send seq # */ - uint32_t tcp_now; /* for RFC 1323 timestamps */ - - /* udp states */ - struct socket udb; - struct socket *udp_last_so; - - /* icmp states */ - struct socket icmp; - struct socket *icmp_last_so; - - /* tftp states */ - char *tftp_prefix; - struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX]; - char *tftp_server_name; - - ArpTable arp_table; - NdpTable ndp_table; - - GRand *grand; - void *ra_timer; - - const SlirpCb *cb; - void *opaque; -}; - -void if_start(Slirp *); - -int get_dns_addr(struct in_addr *pdns_addr); -int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id); - -/* ncsi.c */ -void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len); - -#ifndef _WIN32 -#include <netdb.h> -#endif - - -extern bool slirp_do_keepalive; - -#define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL) - -/* dnssearch.c */ -int translate_dnssearch(Slirp *s, const char ** names); - -/* cksum.c */ -int cksum(struct mbuf *m, int len); -int ip6_cksum(struct mbuf *m); - -/* if.c */ -void if_init(Slirp *); -void if_output(struct socket *, struct mbuf *); - -/* ip_input.c */ -void ip_init(Slirp *); -void ip_cleanup(Slirp *); -void ip_input(struct mbuf *); -void ip_slowtimo(Slirp *); -void ip_stripoptions(register struct mbuf *, struct mbuf *); - -/* ip_output.c */ -int ip_output(struct socket *, struct mbuf *); - -/* ip6_input.c */ -void ip6_init(Slirp *); -void ip6_cleanup(Slirp *); -void ip6_input(struct mbuf *); - -/* ip6_output */ -int ip6_output(struct socket *, struct mbuf *, int fast); - -/* tcp_input.c */ -void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af); -int tcp_mss(register struct tcpcb *, unsigned); - -/* tcp_output.c */ -int tcp_output(register struct tcpcb *); -void tcp_setpersist(register struct tcpcb *); - -/* tcp_subr.c */ -void tcp_init(Slirp *); -void tcp_cleanup(Slirp *); -void tcp_template(struct tcpcb *); -void tcp_respond(struct tcpcb *, register struct tcpiphdr *, - register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short); -struct tcpcb * tcp_newtcpcb(struct socket *); -struct tcpcb * tcp_close(register struct tcpcb *); -void tcp_sockclosed(struct tcpcb *); -int tcp_fconnect(struct socket *, unsigned short af); -void tcp_connect(struct socket *); -int tcp_attach(struct socket *); -uint8_t tcp_tos(struct socket *); -int tcp_emu(struct socket *, struct mbuf *); -int tcp_ctl(struct socket *); -struct tcpcb *tcp_drop(struct tcpcb *tp, int err); - -struct socket * -slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port); - -void slirp_send_packet_all(Slirp *slirp, const void *buf, size_t len); - -#endif diff --git a/slirp/src/socket.c b/slirp/src/socket.c deleted file mode 100644 index bb752fdcae..0000000000 --- a/slirp/src/socket.c +++ /dev/null @@ -1,945 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1995 Danny Gasparovski. - */ - -#include "slirp.h" -#include "ip_icmp.h" -#ifdef __sun__ -#include <sys/filio.h> -#endif - -static void sofcantrcvmore(struct socket *so); -static void sofcantsendmore(struct socket *so); - -struct socket *solookup(struct socket **last, struct socket *head, - struct sockaddr_storage *lhost, struct sockaddr_storage *fhost) -{ - struct socket *so = *last; - - /* Optimisation */ - if (so != head && sockaddr_equal(&(so->lhost.ss), lhost) - && (!fhost || sockaddr_equal(&so->fhost.ss, fhost))) { - return so; - } - - for (so = head->so_next; so != head; so = so->so_next) { - if (sockaddr_equal(&(so->lhost.ss), lhost) - && (!fhost || sockaddr_equal(&so->fhost.ss, fhost))) { - *last = so; - return so; - } - } - - return (struct socket *)NULL; -} - -/* - * Create a new socket, initialise the fields - * It is the responsibility of the caller to - * insque() it into the correct linked-list - */ -struct socket * -socreate(Slirp *slirp) -{ - struct socket *so = g_new(struct socket, 1); - - memset(so, 0, sizeof(struct socket)); - so->so_state = SS_NOFDREF; - so->s = -1; - so->slirp = slirp; - so->pollfds_idx = -1; - - return so; -} - -/* - * Remove references to so from the given message queue. - */ -static void -soqfree(struct socket *so, struct quehead *qh) -{ - struct mbuf *ifq; - - for (ifq = (struct mbuf *) qh->qh_link; - (struct quehead *) ifq != qh; - ifq = ifq->ifq_next) { - if (ifq->ifq_so == so) { - struct mbuf *ifm; - ifq->ifq_so = NULL; - for (ifm = ifq->ifs_next; ifm != ifq; ifm = ifm->ifs_next) { - ifm->ifq_so = NULL; - } - } - } -} - -/* - * remque and free a socket, clobber cache - */ -void -sofree(struct socket *so) -{ - Slirp *slirp = so->slirp; - - soqfree(so, &slirp->if_fastq); - soqfree(so, &slirp->if_batchq); - - if (so == slirp->tcp_last_so) { - slirp->tcp_last_so = &slirp->tcb; - } else if (so == slirp->udp_last_so) { - slirp->udp_last_so = &slirp->udb; - } else if (so == slirp->icmp_last_so) { - slirp->icmp_last_so = &slirp->icmp; - } - m_free(so->so_m); - - if(so->so_next && so->so_prev) - remque(so); /* crashes if so is not in a queue */ - - if (so->so_tcpcb) { - free(so->so_tcpcb); - } - g_free(so); -} - -size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np) -{ - int n, lss, total; - struct sbuf *sb = &so->so_snd; - int len = sb->sb_datalen - sb->sb_cc; - int mss = so->so_tcpcb->t_maxseg; - - DEBUG_CALL("sopreprbuf"); - DEBUG_ARG("so = %p", so); - - if (len <= 0) - return 0; - - iov[0].iov_base = sb->sb_wptr; - iov[1].iov_base = NULL; - iov[1].iov_len = 0; - if (sb->sb_wptr < sb->sb_rptr) { - iov[0].iov_len = sb->sb_rptr - sb->sb_wptr; - /* Should never succeed, but... */ - if (iov[0].iov_len > len) - iov[0].iov_len = len; - if (iov[0].iov_len > mss) - iov[0].iov_len -= iov[0].iov_len%mss; - n = 1; - } else { - iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_wptr; - /* Should never succeed, but... */ - if (iov[0].iov_len > len) iov[0].iov_len = len; - len -= iov[0].iov_len; - if (len) { - iov[1].iov_base = sb->sb_data; - iov[1].iov_len = sb->sb_rptr - sb->sb_data; - if(iov[1].iov_len > len) - iov[1].iov_len = len; - total = iov[0].iov_len + iov[1].iov_len; - if (total > mss) { - lss = total%mss; - if (iov[1].iov_len > lss) { - iov[1].iov_len -= lss; - n = 2; - } else { - lss -= iov[1].iov_len; - iov[0].iov_len -= lss; - n = 1; - } - } else - n = 2; - } else { - if (iov[0].iov_len > mss) - iov[0].iov_len -= iov[0].iov_len%mss; - n = 1; - } - } - if (np) - *np = n; - - return iov[0].iov_len + (n - 1) * iov[1].iov_len; -} - -/* - * Read from so's socket into sb_snd, updating all relevant sbuf fields - * NOTE: This will only be called if it is select()ed for reading, so - * a read() of 0 (or less) means it's disconnected - */ -int -soread(struct socket *so) -{ - int n, nn; - size_t buf_len; - struct sbuf *sb = &so->so_snd; - struct iovec iov[2]; - - DEBUG_CALL("soread"); - DEBUG_ARG("so = %p", so); - - /* - * No need to check if there's enough room to read. - * soread wouldn't have been called if there weren't - */ - buf_len = sopreprbuf(so, iov, &n); - assert(buf_len != 0); - - nn = recv(so->s, iov[0].iov_base, iov[0].iov_len,0); - if (nn <= 0) { - if (nn < 0 && (errno == EINTR || errno == EAGAIN)) - return 0; - else { - int err; - socklen_t elen = sizeof err; - struct sockaddr_storage addr; - struct sockaddr *paddr = (struct sockaddr *) &addr; - socklen_t alen = sizeof addr; - - err = errno; - if (nn == 0) { - if (getpeername(so->s, paddr, &alen) < 0) { - err = errno; - } else { - getsockopt(so->s, SOL_SOCKET, SO_ERROR, - &err, &elen); - } - } - - DEBUG_MISC(" --- soread() disconnected, nn = %d, errno = %d-%s", - nn, errno,strerror(errno)); - sofcantrcvmore(so); - - if (err == ECONNRESET || err == ECONNREFUSED - || err == ENOTCONN || err == EPIPE) { - tcp_drop(sototcpcb(so), err); - } else { - tcp_sockclosed(sototcpcb(so)); - } - return -1; - } - } - - /* - * If there was no error, try and read the second time round - * We read again if n = 2 (ie, there's another part of the buffer) - * and we read as much as we could in the first read - * We don't test for <= 0 this time, because there legitimately - * might not be any more data (since the socket is non-blocking), - * a close will be detected on next iteration. - * A return of -1 won't (shouldn't) happen, since it didn't happen above - */ - if (n == 2 && nn == iov[0].iov_len) { - int ret; - ret = recv(so->s, iov[1].iov_base, iov[1].iov_len,0); - if (ret > 0) - nn += ret; - } - - DEBUG_MISC(" ... read nn = %d bytes", nn); - - /* Update fields */ - sb->sb_cc += nn; - sb->sb_wptr += nn; - if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen)) - sb->sb_wptr -= sb->sb_datalen; - return nn; -} - -int soreadbuf(struct socket *so, const char *buf, int size) -{ - int n, nn, copy = size; - struct sbuf *sb = &so->so_snd; - struct iovec iov[2]; - - DEBUG_CALL("soreadbuf"); - DEBUG_ARG("so = %p", so); - - /* - * No need to check if there's enough room to read. - * soread wouldn't have been called if there weren't - */ - assert(size > 0); - if (sopreprbuf(so, iov, &n) < size) - goto err; - - nn = MIN(iov[0].iov_len, copy); - memcpy(iov[0].iov_base, buf, nn); - - copy -= nn; - buf += nn; - - if (copy == 0) - goto done; - - memcpy(iov[1].iov_base, buf, copy); - -done: - /* Update fields */ - sb->sb_cc += size; - sb->sb_wptr += size; - if (sb->sb_wptr >= (sb->sb_data + sb->sb_datalen)) - sb->sb_wptr -= sb->sb_datalen; - return size; -err: - - sofcantrcvmore(so); - tcp_sockclosed(sototcpcb(so)); - g_critical("soreadbuf buffer too small"); - return -1; -} - -/* - * Get urgent data - * - * When the socket is created, we set it SO_OOBINLINE, - * so when OOB data arrives, we soread() it and everything - * in the send buffer is sent as urgent data - */ -int -sorecvoob(struct socket *so) -{ - struct tcpcb *tp = sototcpcb(so); - int ret; - - DEBUG_CALL("sorecvoob"); - DEBUG_ARG("so = %p", so); - - /* - * We take a guess at how much urgent data has arrived. - * In most situations, when urgent data arrives, the next - * read() should get all the urgent data. This guess will - * be wrong however if more data arrives just after the - * urgent data, or the read() doesn't return all the - * urgent data. - */ - ret = soread(so); - if (ret > 0) { - tp->snd_up = tp->snd_una + so->so_snd.sb_cc; - tp->t_force = 1; - tcp_output(tp); - tp->t_force = 0; - } - - return ret; -} - -/* - * Send urgent data - * There's a lot duplicated code here, but... - */ -int -sosendoob(struct socket *so) -{ - struct sbuf *sb = &so->so_rcv; - char buff[2048]; /* XXX Shouldn't be sending more oob data than this */ - - int n; - - DEBUG_CALL("sosendoob"); - DEBUG_ARG("so = %p", so); - DEBUG_ARG("sb->sb_cc = %d", sb->sb_cc); - - if (so->so_urgc > 2048) - so->so_urgc = 2048; /* XXXX */ - - if (sb->sb_rptr < sb->sb_wptr) { - /* We can send it directly */ - n = slirp_send(so, sb->sb_rptr, so->so_urgc, (MSG_OOB)); /* |MSG_DONTWAIT)); */ - } else { - /* - * Since there's no sendv or sendtov like writev, - * we must copy all data to a linear buffer then - * send it all - */ - uint32_t urgc = so->so_urgc; - int len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr; - if (len > urgc) { - len = urgc; - } - memcpy(buff, sb->sb_rptr, len); - urgc -= len; - if (urgc) { - n = sb->sb_wptr - sb->sb_data; - if (n > urgc) { - n = urgc; - } - memcpy((buff + len), sb->sb_data, n); - len += n; - } - n = slirp_send(so, buff, len, (MSG_OOB)); /* |MSG_DONTWAIT)); */ -#ifdef DEBUG - if (n != len) { - DEBUG_ERROR("Didn't send all data urgently XXXXX"); - } -#endif - } - - if (n < 0) { - return n; - } - so->so_urgc -= n; - DEBUG_MISC(" ---2 sent %d bytes urgent data, %d urgent bytes left", n, so->so_urgc); - - sb->sb_cc -= n; - sb->sb_rptr += n; - if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen)) - sb->sb_rptr -= sb->sb_datalen; - - return n; -} - -/* - * Write data from so_rcv to so's socket, - * updating all sbuf field as necessary - */ -int -sowrite(struct socket *so) -{ - int n,nn; - struct sbuf *sb = &so->so_rcv; - int len = sb->sb_cc; - struct iovec iov[2]; - - DEBUG_CALL("sowrite"); - DEBUG_ARG("so = %p", so); - - if (so->so_urgc) { - uint32_t expected = so->so_urgc; - if (sosendoob(so) < expected) { - /* Treat a short write as a fatal error too, - * rather than continuing on and sending the urgent - * data as if it were non-urgent and leaving the - * so_urgc count wrong. - */ - goto err_disconnected; - } - if (sb->sb_cc == 0) - return 0; - } - - /* - * No need to check if there's something to write, - * sowrite wouldn't have been called otherwise - */ - - iov[0].iov_base = sb->sb_rptr; - iov[1].iov_base = NULL; - iov[1].iov_len = 0; - if (sb->sb_rptr < sb->sb_wptr) { - iov[0].iov_len = sb->sb_wptr - sb->sb_rptr; - /* Should never succeed, but... */ - if (iov[0].iov_len > len) iov[0].iov_len = len; - n = 1; - } else { - iov[0].iov_len = (sb->sb_data + sb->sb_datalen) - sb->sb_rptr; - if (iov[0].iov_len > len) iov[0].iov_len = len; - len -= iov[0].iov_len; - if (len) { - iov[1].iov_base = sb->sb_data; - iov[1].iov_len = sb->sb_wptr - sb->sb_data; - if (iov[1].iov_len > len) iov[1].iov_len = len; - n = 2; - } else - n = 1; - } - /* Check if there's urgent data to send, and if so, send it */ - - nn = slirp_send(so, iov[0].iov_base, iov[0].iov_len,0); - /* This should never happen, but people tell me it does *shrug* */ - if (nn < 0 && (errno == EAGAIN || errno == EINTR)) - return 0; - - if (nn <= 0) { - goto err_disconnected; - } - - if (n == 2 && nn == iov[0].iov_len) { - int ret; - ret = slirp_send(so, iov[1].iov_base, iov[1].iov_len,0); - if (ret > 0) - nn += ret; - } - DEBUG_MISC(" ... wrote nn = %d bytes", nn); - - /* Update sbuf */ - sb->sb_cc -= nn; - sb->sb_rptr += nn; - if (sb->sb_rptr >= (sb->sb_data + sb->sb_datalen)) - sb->sb_rptr -= sb->sb_datalen; - - /* - * If in DRAIN mode, and there's no more data, set - * it CANTSENDMORE - */ - if ((so->so_state & SS_FWDRAIN) && sb->sb_cc == 0) - sofcantsendmore(so); - - return nn; - -err_disconnected: - DEBUG_MISC(" --- sowrite disconnected, so->so_state = %x, errno = %d", - so->so_state, errno); - sofcantsendmore(so); - tcp_sockclosed(sototcpcb(so)); - return -1; -} - -/* - * recvfrom() a UDP socket - */ -void -sorecvfrom(struct socket *so) -{ - struct sockaddr_storage addr; - struct sockaddr_storage saddr, daddr; - socklen_t addrlen = sizeof(struct sockaddr_storage); - - DEBUG_CALL("sorecvfrom"); - DEBUG_ARG("so = %p", so); - - if (so->so_type == IPPROTO_ICMP) { /* This is a "ping" reply */ - char buff[256]; - int len; - - len = recvfrom(so->s, buff, 256, 0, - (struct sockaddr *)&addr, &addrlen); - /* XXX Check if reply is "correct"? */ - - if(len == -1 || len == 0) { - uint8_t code=ICMP_UNREACH_PORT; - - if(errno == EHOSTUNREACH) code=ICMP_UNREACH_HOST; - else if(errno == ENETUNREACH) code=ICMP_UNREACH_NET; - - DEBUG_MISC(" udp icmp rx errno = %d-%s", - errno,strerror(errno)); - icmp_send_error(so->so_m, ICMP_UNREACH, code, 0, strerror(errno)); - } else { - icmp_reflect(so->so_m); - so->so_m = NULL; /* Don't m_free() it again! */ - } - /* No need for this socket anymore, udp_detach it */ - udp_detach(so); - } else { /* A "normal" UDP packet */ - struct mbuf *m; - int len; -#ifdef _WIN32 - unsigned long n; -#else - int n; -#endif - - if (ioctlsocket(so->s, FIONREAD, &n) != 0) { - DEBUG_MISC(" ioctlsocket errno = %d-%s\n", - errno,strerror(errno)); - return; - } - if (n == 0) { - return; - } - - m = m_get(so->slirp); - if (!m) { - return; - } - switch (so->so_ffamily) { - case AF_INET: - m->m_data += IF_MAXLINKHDR + sizeof(struct udpiphdr); - break; - case AF_INET6: - m->m_data += IF_MAXLINKHDR + sizeof(struct ip6) - + sizeof(struct udphdr); - break; - default: - g_assert_not_reached(); - break; - } - - /* - * XXX Shouldn't FIONREAD packets destined for port 53, - * but I don't know the max packet size for DNS lookups - */ - len = M_FREEROOM(m); - /* if (so->so_fport != htons(53)) { */ - - if (n > len) { - n = (m->m_data - m->m_dat) + m->m_len + n + 1; - m_inc(m, n); - len = M_FREEROOM(m); - } - /* } */ - - m->m_len = recvfrom(so->s, m->m_data, len, 0, - (struct sockaddr *)&addr, &addrlen); - DEBUG_MISC(" did recvfrom %d, errno = %d-%s", - m->m_len, errno,strerror(errno)); - if(m->m_len<0) { - /* Report error as ICMP */ - switch (so->so_lfamily) { - uint8_t code; - case AF_INET: - code = ICMP_UNREACH_PORT; - - if (errno == EHOSTUNREACH) { - code = ICMP_UNREACH_HOST; - } else if (errno == ENETUNREACH) { - code = ICMP_UNREACH_NET; - } - - DEBUG_MISC(" rx error, tx icmp ICMP_UNREACH:%i", code); - icmp_send_error(so->so_m, ICMP_UNREACH, code, 0, strerror(errno)); - break; - case AF_INET6: - code = ICMP6_UNREACH_PORT; - - if (errno == EHOSTUNREACH) { - code = ICMP6_UNREACH_ADDRESS; - } else if (errno == ENETUNREACH) { - code = ICMP6_UNREACH_NO_ROUTE; - } - - DEBUG_MISC(" rx error, tx icmp6 ICMP_UNREACH:%i", code); - icmp6_send_error(so->so_m, ICMP6_UNREACH, code); - break; - default: - g_assert_not_reached(); - break; - } - m_free(m); - } else { - /* - * Hack: domain name lookup will be used the most for UDP, - * and since they'll only be used once there's no need - * for the 4 minute (or whatever) timeout... So we time them - * out much quicker (10 seconds for now...) - */ - if (so->so_expire) { - if (so->so_fport == htons(53)) - so->so_expire = curtime + SO_EXPIREFAST; - else - so->so_expire = curtime + SO_EXPIRE; - } - - /* - * If this packet was destined for CTL_ADDR, - * make it look like that's where it came from - */ - saddr = addr; - sotranslate_in(so, &saddr); - daddr = so->lhost.ss; - - switch (so->so_ffamily) { - case AF_INET: - udp_output(so, m, (struct sockaddr_in *) &saddr, - (struct sockaddr_in *) &daddr, - so->so_iptos); - break; - case AF_INET6: - udp6_output(so, m, (struct sockaddr_in6 *) &saddr, - (struct sockaddr_in6 *) &daddr); - break; - default: - g_assert_not_reached(); - break; - } - } /* rx error */ - } /* if ping packet */ -} - -/* - * sendto() a socket - */ -int -sosendto(struct socket *so, struct mbuf *m) -{ - int ret; - struct sockaddr_storage addr; - - DEBUG_CALL("sosendto"); - DEBUG_ARG("so = %p", so); - DEBUG_ARG("m = %p", m); - - addr = so->fhost.ss; - DEBUG_CALL(" sendto()ing)"); - sotranslate_out(so, &addr); - - /* Don't care what port we get */ - ret = sendto(so->s, m->m_data, m->m_len, 0, - (struct sockaddr *)&addr, sockaddr_size(&addr)); - if (ret < 0) - return -1; - - /* - * Kill the socket if there's no reply in 4 minutes, - * but only if it's an expirable socket - */ - if (so->so_expire) - so->so_expire = curtime + SO_EXPIRE; - so->so_state &= SS_PERSISTENT_MASK; - so->so_state |= SS_ISFCONNECTED; /* So that it gets select()ed */ - return 0; -} - -/* - * Listen for incoming TCP connections - */ -struct socket * -tcp_listen(Slirp *slirp, uint32_t haddr, unsigned hport, uint32_t laddr, - unsigned lport, int flags) -{ - /* TODO: IPv6 */ - struct sockaddr_in addr; - struct socket *so; - int s, opt = 1; - socklen_t addrlen = sizeof(addr); - memset(&addr, 0, addrlen); - - DEBUG_CALL("tcp_listen"); - DEBUG_ARG("haddr = %s", inet_ntoa((struct in_addr){.s_addr = haddr})); - DEBUG_ARG("hport = %d", ntohs(hport)); - DEBUG_ARG("laddr = %s", inet_ntoa((struct in_addr){.s_addr = laddr})); - DEBUG_ARG("lport = %d", ntohs(lport)); - DEBUG_ARG("flags = %x", flags); - - so = socreate(slirp); - - /* Don't tcp_attach... we don't need so_snd nor so_rcv */ - if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) { - g_free(so); - return NULL; - } - insque(so, &slirp->tcb); - - /* - * SS_FACCEPTONCE sockets must time out. - */ - if (flags & SS_FACCEPTONCE) - so->so_tcpcb->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT*2; - - so->so_state &= SS_PERSISTENT_MASK; - so->so_state |= (SS_FACCEPTCONN | flags); - so->so_lfamily = AF_INET; - so->so_lport = lport; /* Kept in network format */ - so->so_laddr.s_addr = laddr; /* Ditto */ - - addr.sin_family = AF_INET; - addr.sin_addr.s_addr = haddr; - addr.sin_port = hport; - - if (((s = slirp_socket(AF_INET,SOCK_STREAM,0)) < 0) || - (slirp_socket_set_fast_reuse(s) < 0) || - (bind(s,(struct sockaddr *)&addr, sizeof(addr)) < 0) || - (listen(s,1) < 0)) { - int tmperrno = errno; /* Don't clobber the real reason we failed */ - - if (s >= 0) { - closesocket(s); - } - sofree(so); - /* Restore the real errno */ -#ifdef _WIN32 - WSASetLastError(tmperrno); -#else - errno = tmperrno; -#endif - return NULL; - } - setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int)); - opt = 1; - setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(int)); - - getsockname(s,(struct sockaddr *)&addr,&addrlen); - so->so_ffamily = AF_INET; - so->so_fport = addr.sin_port; - if (addr.sin_addr.s_addr == 0 || addr.sin_addr.s_addr == loopback_addr.s_addr) - so->so_faddr = slirp->vhost_addr; - else - so->so_faddr = addr.sin_addr; - - so->s = s; - return so; -} - -/* - * Various session state calls - * XXX Should be #define's - * The socket state stuff needs work, these often get call 2 or 3 - * times each when only 1 was needed - */ -void -soisfconnecting(struct socket *so) -{ - so->so_state &= ~(SS_NOFDREF|SS_ISFCONNECTED|SS_FCANTRCVMORE| - SS_FCANTSENDMORE|SS_FWDRAIN); - so->so_state |= SS_ISFCONNECTING; /* Clobber other states */ -} - -void -soisfconnected(struct socket *so) -{ - so->so_state &= ~(SS_ISFCONNECTING|SS_FWDRAIN|SS_NOFDREF); - so->so_state |= SS_ISFCONNECTED; /* Clobber other states */ -} - -static void -sofcantrcvmore(struct socket *so) -{ - if ((so->so_state & SS_NOFDREF) == 0) { - shutdown(so->s,0); - } - so->so_state &= ~(SS_ISFCONNECTING); - if (so->so_state & SS_FCANTSENDMORE) { - so->so_state &= SS_PERSISTENT_MASK; - so->so_state |= SS_NOFDREF; /* Don't select it */ - } else { - so->so_state |= SS_FCANTRCVMORE; - } -} - -static void -sofcantsendmore(struct socket *so) -{ - if ((so->so_state & SS_NOFDREF) == 0) { - shutdown(so->s,1); /* send FIN to fhost */ - } - so->so_state &= ~(SS_ISFCONNECTING); - if (so->so_state & SS_FCANTRCVMORE) { - so->so_state &= SS_PERSISTENT_MASK; - so->so_state |= SS_NOFDREF; /* as above */ - } else { - so->so_state |= SS_FCANTSENDMORE; - } -} - -/* - * Set write drain mode - * Set CANTSENDMORE once all data has been write()n - */ -void -sofwdrain(struct socket *so) -{ - if (so->so_rcv.sb_cc) - so->so_state |= SS_FWDRAIN; - else - sofcantsendmore(so); -} - -/* - * Translate addr in host addr when it is a virtual address - */ -void sotranslate_out(struct socket *so, struct sockaddr_storage *addr) -{ - Slirp *slirp = so->slirp; - struct sockaddr_in *sin = (struct sockaddr_in *)addr; - struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; - - switch (addr->ss_family) { - case AF_INET: - if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) == - slirp->vnetwork_addr.s_addr) { - /* It's an alias */ - if (so->so_faddr.s_addr == slirp->vnameserver_addr.s_addr) { - if (get_dns_addr(&sin->sin_addr) < 0) { - sin->sin_addr = loopback_addr; - } - } else { - sin->sin_addr = loopback_addr; - } - } - - DEBUG_MISC(" addr.sin_port=%d, addr.sin_addr.s_addr=%.16s", - ntohs(sin->sin_port), inet_ntoa(sin->sin_addr)); - break; - - case AF_INET6: - if (in6_equal_net(&so->so_faddr6, &slirp->vprefix_addr6, - slirp->vprefix_len)) { - if (in6_equal(&so->so_faddr6, &slirp->vnameserver_addr6)) { - uint32_t scope_id; - if (get_dns6_addr(&sin6->sin6_addr, &scope_id) >= 0) { - sin6->sin6_scope_id = scope_id; - } else { - sin6->sin6_addr = in6addr_loopback; - } - } else { - sin6->sin6_addr = in6addr_loopback; - } - } - break; - - default: - break; - } -} - -void sotranslate_in(struct socket *so, struct sockaddr_storage *addr) -{ - Slirp *slirp = so->slirp; - struct sockaddr_in *sin = (struct sockaddr_in *)addr; - struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; - - switch (addr->ss_family) { - case AF_INET: - if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) == - slirp->vnetwork_addr.s_addr) { - uint32_t inv_mask = ~slirp->vnetwork_mask.s_addr; - - if ((so->so_faddr.s_addr & inv_mask) == inv_mask) { - sin->sin_addr = slirp->vhost_addr; - } else if (sin->sin_addr.s_addr == loopback_addr.s_addr || - so->so_faddr.s_addr != slirp->vhost_addr.s_addr) { - sin->sin_addr = so->so_faddr; - } - } - break; - - case AF_INET6: - if (in6_equal_net(&so->so_faddr6, &slirp->vprefix_addr6, - slirp->vprefix_len)) { - if (in6_equal(&sin6->sin6_addr, &in6addr_loopback) - || !in6_equal(&so->so_faddr6, &slirp->vhost_addr6)) { - sin6->sin6_addr = so->so_faddr6; - } - } - break; - - default: - break; - } -} - -/* - * Translate connections from localhost to the real hostname - */ -void sotranslate_accept(struct socket *so) -{ - Slirp *slirp = so->slirp; - - switch (so->so_ffamily) { - case AF_INET: - if (so->so_faddr.s_addr == INADDR_ANY || - (so->so_faddr.s_addr & loopback_mask) == - (loopback_addr.s_addr & loopback_mask)) { - so->so_faddr = slirp->vhost_addr; - } - break; - - case AF_INET6: - if (in6_equal(&so->so_faddr6, &in6addr_any) || - in6_equal(&so->so_faddr6, &in6addr_loopback)) { - so->so_faddr6 = slirp->vhost_addr6; - } - break; - - default: - break; - } -} - -void sodrop(struct socket *s, int num) -{ - if (sbdrop(&s->so_snd, num)) { - s->slirp->cb->notify(s->slirp->opaque); - } -} diff --git a/slirp/src/socket.h b/slirp/src/socket.h deleted file mode 100644 index 25403898cd..0000000000 --- a/slirp/src/socket.h +++ /dev/null @@ -1,160 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1995 Danny Gasparovski. - */ - -#ifndef SLIRP_SOCKET_H -#define SLIRP_SOCKET_H - -#include "misc.h" - -#define SO_EXPIRE 240000 -#define SO_EXPIREFAST 10000 - -/* - * Our socket structure - */ - -union slirp_sockaddr { - struct sockaddr_storage ss; - struct sockaddr_in sin; - struct sockaddr_in6 sin6; -}; - -struct socket { - struct socket *so_next,*so_prev; /* For a linked list of sockets */ - - int s; /* The actual socket */ - struct gfwd_list *guestfwd; - - int pollfds_idx; /* GPollFD GArray index */ - - Slirp *slirp; /* managing slirp instance */ - - /* XXX union these with not-yet-used sbuf params */ - struct mbuf *so_m; /* Pointer to the original SYN packet, - * for non-blocking connect()'s, and - * PING reply's */ - struct tcpiphdr *so_ti; /* Pointer to the original ti within - * so_mconn, for non-blocking connections */ - uint32_t so_urgc; - union slirp_sockaddr fhost; /* Foreign host */ -#define so_faddr fhost.sin.sin_addr -#define so_fport fhost.sin.sin_port -#define so_faddr6 fhost.sin6.sin6_addr -#define so_fport6 fhost.sin6.sin6_port -#define so_ffamily fhost.ss.ss_family - - union slirp_sockaddr lhost; /* Local host */ -#define so_laddr lhost.sin.sin_addr -#define so_lport lhost.sin.sin_port -#define so_laddr6 lhost.sin6.sin6_addr -#define so_lport6 lhost.sin6.sin6_port -#define so_lfamily lhost.ss.ss_family - - uint8_t so_iptos; /* Type of service */ - uint8_t so_emu; /* Is the socket emulated? */ - - uint8_t so_type; /* Type of socket, UDP or TCP */ - int32_t so_state; /* internal state flags SS_*, below */ - - struct tcpcb *so_tcpcb; /* pointer to TCP protocol control block */ - unsigned so_expire; /* When the socket will expire */ - - int so_queued; /* Number of packets queued from this socket */ - int so_nqueued; /* Number of packets queued in a row - * Used to determine when to "downgrade" a session - * from fastq to batchq */ - - struct sbuf so_rcv; /* Receive buffer */ - struct sbuf so_snd; /* Send buffer */ -}; - - -/* - * Socket state bits. (peer means the host on the Internet, - * local host means the host on the other end of the modem) - */ -#define SS_NOFDREF 0x001 /* No fd reference */ - -#define SS_ISFCONNECTING 0x002 /* Socket is connecting to peer (non-blocking connect()'s) */ -#define SS_ISFCONNECTED 0x004 /* Socket is connected to peer */ -#define SS_FCANTRCVMORE 0x008 /* Socket can't receive more from peer (for half-closes) */ -#define SS_FCANTSENDMORE 0x010 /* Socket can't send more to peer (for half-closes) */ -#define SS_FWDRAIN 0x040 /* We received a FIN, drain data and set SS_FCANTSENDMORE */ - -#define SS_CTL 0x080 -#define SS_FACCEPTCONN 0x100 /* Socket is accepting connections from a host on the internet */ -#define SS_FACCEPTONCE 0x200 /* If set, the SS_FACCEPTCONN socket will die after one accept */ - -#define SS_PERSISTENT_MASK 0xf000 /* Unremovable state bits */ -#define SS_HOSTFWD 0x1000 /* Socket describes host->guest forwarding */ -#define SS_INCOMING 0x2000 /* Connection was initiated by a host on the internet */ - -static inline int sockaddr_equal(struct sockaddr_storage *a, - struct sockaddr_storage *b) -{ - if (a->ss_family != b->ss_family) { - return 0; - } - - switch (a->ss_family) { - case AF_INET: - { - struct sockaddr_in *a4 = (struct sockaddr_in *) a; - struct sockaddr_in *b4 = (struct sockaddr_in *) b; - return a4->sin_addr.s_addr == b4->sin_addr.s_addr - && a4->sin_port == b4->sin_port; - } - case AF_INET6: - { - struct sockaddr_in6 *a6 = (struct sockaddr_in6 *) a; - struct sockaddr_in6 *b6 = (struct sockaddr_in6 *) b; - return (in6_equal(&a6->sin6_addr, &b6->sin6_addr) - && a6->sin6_port == b6->sin6_port); - } - default: - g_assert_not_reached(); - } - - return 0; -} - -static inline socklen_t sockaddr_size(struct sockaddr_storage *a) -{ - switch (a->ss_family) { - case AF_INET: - return sizeof(struct sockaddr_in); - case AF_INET6: - return sizeof(struct sockaddr_in6); - default: - g_assert_not_reached(); - } -} - -struct socket *solookup(struct socket **, struct socket *, - struct sockaddr_storage *, struct sockaddr_storage *); -struct socket *socreate(Slirp *); -void sofree(struct socket *); -int soread(struct socket *); -int sorecvoob(struct socket *); -int sosendoob(struct socket *); -int sowrite(struct socket *); -void sorecvfrom(struct socket *); -int sosendto(struct socket *, struct mbuf *); -struct socket * tcp_listen(Slirp *, uint32_t, unsigned, uint32_t, unsigned, - int); -void soisfconnecting(register struct socket *); -void soisfconnected(register struct socket *); -void sofwdrain(struct socket *); -struct iovec; /* For win32 */ -size_t sopreprbuf(struct socket *so, struct iovec *iov, int *np); -int soreadbuf(struct socket *so, const char *buf, int size); - -void sotranslate_out(struct socket *, struct sockaddr_storage *); -void sotranslate_in(struct socket *, struct sockaddr_storage *); -void sotranslate_accept(struct socket *); -void sodrop(struct socket *, int num); - - -#endif /* SLIRP_SOCKET_H */ diff --git a/slirp/src/state.c b/slirp/src/state.c deleted file mode 100644 index 09cea3590e..0000000000 --- a/slirp/src/state.c +++ /dev/null @@ -1,388 +0,0 @@ -/* SPDX-License-Identifier: MIT */ -/* - * libslirp - * - * Copyright (c) 2004-2008 Fabrice Bellard - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "slirp.h" -#include "vmstate.h" -#include "stream.h" - -static int slirp_tcp_post_load(void *opaque, int version) -{ - tcp_template((struct tcpcb *)opaque); - - return 0; -} - -static const VMStateDescription vmstate_slirp_tcp = { - .name = "slirp-tcp", - .version_id = 0, - .post_load = slirp_tcp_post_load, - .fields = (VMStateField[]) { - VMSTATE_INT16(t_state, struct tcpcb), - VMSTATE_INT16_ARRAY(t_timer, struct tcpcb, TCPT_NTIMERS), - VMSTATE_INT16(t_rxtshift, struct tcpcb), - VMSTATE_INT16(t_rxtcur, struct tcpcb), - VMSTATE_INT16(t_dupacks, struct tcpcb), - VMSTATE_UINT16(t_maxseg, struct tcpcb), - VMSTATE_UINT8(t_force, struct tcpcb), - VMSTATE_UINT16(t_flags, struct tcpcb), - VMSTATE_UINT32(snd_una, struct tcpcb), - VMSTATE_UINT32(snd_nxt, struct tcpcb), - VMSTATE_UINT32(snd_up, struct tcpcb), - VMSTATE_UINT32(snd_wl1, struct tcpcb), - VMSTATE_UINT32(snd_wl2, struct tcpcb), - VMSTATE_UINT32(iss, struct tcpcb), - VMSTATE_UINT32(snd_wnd, struct tcpcb), - VMSTATE_UINT32(rcv_wnd, struct tcpcb), - VMSTATE_UINT32(rcv_nxt, struct tcpcb), - VMSTATE_UINT32(rcv_up, struct tcpcb), - VMSTATE_UINT32(irs, struct tcpcb), - VMSTATE_UINT32(rcv_adv, struct tcpcb), - VMSTATE_UINT32(snd_max, struct tcpcb), - VMSTATE_UINT32(snd_cwnd, struct tcpcb), - VMSTATE_UINT32(snd_ssthresh, struct tcpcb), - VMSTATE_INT16(t_idle, struct tcpcb), - VMSTATE_INT16(t_rtt, struct tcpcb), - VMSTATE_UINT32(t_rtseq, struct tcpcb), - VMSTATE_INT16(t_srtt, struct tcpcb), - VMSTATE_INT16(t_rttvar, struct tcpcb), - VMSTATE_UINT16(t_rttmin, struct tcpcb), - VMSTATE_UINT32(max_sndwnd, struct tcpcb), - VMSTATE_UINT8(t_oobflags, struct tcpcb), - VMSTATE_UINT8(t_iobc, struct tcpcb), - VMSTATE_INT16(t_softerror, struct tcpcb), - VMSTATE_UINT8(snd_scale, struct tcpcb), - VMSTATE_UINT8(rcv_scale, struct tcpcb), - VMSTATE_UINT8(request_r_scale, struct tcpcb), - VMSTATE_UINT8(requested_s_scale, struct tcpcb), - VMSTATE_UINT32(ts_recent, struct tcpcb), - VMSTATE_UINT32(ts_recent_age, struct tcpcb), - VMSTATE_UINT32(last_ack_sent, struct tcpcb), - VMSTATE_END_OF_LIST() - } -}; - -/* The sbuf has a pair of pointers that are migrated as offsets; - * we calculate the offsets and restore the pointers using - * pre_save/post_load on a tmp structure. - */ -struct sbuf_tmp { - struct sbuf *parent; - uint32_t roff, woff; -}; - -static int sbuf_tmp_pre_save(void *opaque) -{ - struct sbuf_tmp *tmp = opaque; - tmp->woff = tmp->parent->sb_wptr - tmp->parent->sb_data; - tmp->roff = tmp->parent->sb_rptr - tmp->parent->sb_data; - - return 0; -} - -static int sbuf_tmp_post_load(void *opaque, int version) -{ - struct sbuf_tmp *tmp = opaque; - uint32_t requested_len = tmp->parent->sb_datalen; - - /* Allocate the buffer space used by the field after the tmp */ - sbreserve(tmp->parent, tmp->parent->sb_datalen); - - if (tmp->parent->sb_datalen != requested_len) { - return -ENOMEM; - } - if (tmp->woff >= requested_len || - tmp->roff >= requested_len) { - g_critical("invalid sbuf offsets r/w=%u/%u len=%u", - tmp->roff, tmp->woff, requested_len); - return -EINVAL; - } - - tmp->parent->sb_wptr = tmp->parent->sb_data + tmp->woff; - tmp->parent->sb_rptr = tmp->parent->sb_data + tmp->roff; - - return 0; -} - - -static const VMStateDescription vmstate_slirp_sbuf_tmp = { - .name = "slirp-sbuf-tmp", - .post_load = sbuf_tmp_post_load, - .pre_save = sbuf_tmp_pre_save, - .version_id = 0, - .fields = (VMStateField[]) { - VMSTATE_UINT32(woff, struct sbuf_tmp), - VMSTATE_UINT32(roff, struct sbuf_tmp), - VMSTATE_END_OF_LIST() - } -}; - -static const VMStateDescription vmstate_slirp_sbuf = { - .name = "slirp-sbuf", - .version_id = 0, - .fields = (VMStateField[]) { - VMSTATE_UINT32(sb_cc, struct sbuf), - VMSTATE_UINT32(sb_datalen, struct sbuf), - VMSTATE_WITH_TMP(struct sbuf, struct sbuf_tmp, vmstate_slirp_sbuf_tmp), - VMSTATE_VBUFFER_UINT32(sb_data, struct sbuf, 0, NULL, sb_datalen), - VMSTATE_END_OF_LIST() - } -}; - -static bool slirp_older_than_v4(void *opaque, int version_id) -{ - return version_id < 4; -} - -static bool slirp_family_inet(void *opaque, int version_id) -{ - union slirp_sockaddr *ssa = (union slirp_sockaddr *)opaque; - return ssa->ss.ss_family == AF_INET; -} - -static int slirp_socket_pre_load(void *opaque) -{ - struct socket *so = opaque; - if (tcp_attach(so) < 0) { - return -ENOMEM; - } - /* Older versions don't load these fields */ - so->so_ffamily = AF_INET; - so->so_lfamily = AF_INET; - return 0; -} - -#ifndef _WIN32 -#define VMSTATE_SIN4_ADDR(f, s, t) VMSTATE_UINT32_TEST(f, s, t) -#else -/* Win uses u_long rather than uint32_t - but it's still 32bits long */ -#define VMSTATE_SIN4_ADDR(f, s, t) VMSTATE_SINGLE_TEST(f, s, t, 0, \ - slirp_vmstate_info_uint32, u_long) -#endif - -/* The OS provided ss_family field isn't that portable; it's size - * and type varies (16/8 bit, signed, unsigned) - * and the values it contains aren't fully portable. - */ -typedef struct SS_FamilyTmpStruct { - union slirp_sockaddr *parent; - uint16_t portable_family; -} SS_FamilyTmpStruct; - -#define SS_FAMILY_MIG_IPV4 2 /* Linux, BSD, Win... */ -#define SS_FAMILY_MIG_IPV6 10 /* Linux */ -#define SS_FAMILY_MIG_OTHER 0xffff - -static int ss_family_pre_save(void *opaque) -{ - SS_FamilyTmpStruct *tss = opaque; - - tss->portable_family = SS_FAMILY_MIG_OTHER; - - if (tss->parent->ss.ss_family == AF_INET) { - tss->portable_family = SS_FAMILY_MIG_IPV4; - } else if (tss->parent->ss.ss_family == AF_INET6) { - tss->portable_family = SS_FAMILY_MIG_IPV6; - } - - return 0; -} - -static int ss_family_post_load(void *opaque, int version_id) -{ - SS_FamilyTmpStruct *tss = opaque; - - switch (tss->portable_family) { - case SS_FAMILY_MIG_IPV4: - tss->parent->ss.ss_family = AF_INET; - break; - case SS_FAMILY_MIG_IPV6: - case 23: /* compatibility: AF_INET6 from mingw */ - case 28: /* compatibility: AF_INET6 from FreeBSD sys/socket.h */ - tss->parent->ss.ss_family = AF_INET6; - break; - default: - g_critical("invalid ss_family type %x", tss->portable_family); - return -EINVAL; - } - - return 0; -} - -static const VMStateDescription vmstate_slirp_ss_family = { - .name = "slirp-socket-addr/ss_family", - .pre_save = ss_family_pre_save, - .post_load = ss_family_post_load, - .fields = (VMStateField[]) { - VMSTATE_UINT16(portable_family, SS_FamilyTmpStruct), - VMSTATE_END_OF_LIST() - } -}; - -static const VMStateDescription vmstate_slirp_socket_addr = { - .name = "slirp-socket-addr", - .version_id = 4, - .fields = (VMStateField[]) { - VMSTATE_WITH_TMP(union slirp_sockaddr, SS_FamilyTmpStruct, - vmstate_slirp_ss_family), - VMSTATE_SIN4_ADDR(sin.sin_addr.s_addr, union slirp_sockaddr, - slirp_family_inet), - VMSTATE_UINT16_TEST(sin.sin_port, union slirp_sockaddr, - slirp_family_inet), - -#if 0 - /* Untested: Needs checking by someone with IPv6 test */ - VMSTATE_BUFFER_TEST(sin6.sin6_addr, union slirp_sockaddr, - slirp_family_inet6), - VMSTATE_UINT16_TEST(sin6.sin6_port, union slirp_sockaddr, - slirp_family_inet6), - VMSTATE_UINT32_TEST(sin6.sin6_flowinfo, union slirp_sockaddr, - slirp_family_inet6), - VMSTATE_UINT32_TEST(sin6.sin6_scope_id, union slirp_sockaddr, - slirp_family_inet6), -#endif - - VMSTATE_END_OF_LIST() - } -}; - -static const VMStateDescription vmstate_slirp_socket = { - .name = "slirp-socket", - .version_id = 4, - .pre_load = slirp_socket_pre_load, - .fields = (VMStateField[]) { - VMSTATE_UINT32(so_urgc, struct socket), - /* Pre-v4 versions */ - VMSTATE_SIN4_ADDR(so_faddr.s_addr, struct socket, - slirp_older_than_v4), - VMSTATE_SIN4_ADDR(so_laddr.s_addr, struct socket, - slirp_older_than_v4), - VMSTATE_UINT16_TEST(so_fport, struct socket, slirp_older_than_v4), - VMSTATE_UINT16_TEST(so_lport, struct socket, slirp_older_than_v4), - /* v4 and newer */ - VMSTATE_STRUCT(fhost, struct socket, 4, vmstate_slirp_socket_addr, - union slirp_sockaddr), - VMSTATE_STRUCT(lhost, struct socket, 4, vmstate_slirp_socket_addr, - union slirp_sockaddr), - - VMSTATE_UINT8(so_iptos, struct socket), - VMSTATE_UINT8(so_emu, struct socket), - VMSTATE_UINT8(so_type, struct socket), - VMSTATE_INT32(so_state, struct socket), - VMSTATE_STRUCT(so_rcv, struct socket, 0, vmstate_slirp_sbuf, - struct sbuf), - VMSTATE_STRUCT(so_snd, struct socket, 0, vmstate_slirp_sbuf, - struct sbuf), - VMSTATE_STRUCT_POINTER(so_tcpcb, struct socket, vmstate_slirp_tcp, - struct tcpcb), - VMSTATE_END_OF_LIST() - } -}; - -static const VMStateDescription vmstate_slirp_bootp_client = { - .name = "slirp_bootpclient", - .fields = (VMStateField[]) { - VMSTATE_UINT16(allocated, BOOTPClient), - VMSTATE_BUFFER(macaddr, BOOTPClient), - VMSTATE_END_OF_LIST() - } -}; - -static const VMStateDescription vmstate_slirp = { - .name = "slirp", - .version_id = 4, - .fields = (VMStateField[]) { - VMSTATE_UINT16_V(ip_id, Slirp, 2), - VMSTATE_STRUCT_ARRAY(bootp_clients, Slirp, NB_BOOTP_CLIENTS, 3, - vmstate_slirp_bootp_client, BOOTPClient), - VMSTATE_END_OF_LIST() - } -}; - -void slirp_state_save(Slirp *slirp, SlirpWriteCb write_cb, void *opaque) -{ - struct gfwd_list *ex_ptr; - SlirpOStream f = { - .write_cb = write_cb, - .opaque = opaque, - }; - - for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) - if (ex_ptr->write_cb) { - struct socket *so; - so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr, - ntohs(ex_ptr->ex_fport)); - if (!so) { - continue; - } - - slirp_ostream_write_u8(&f, 42); - slirp_vmstate_save_state(&f, &vmstate_slirp_socket, so); - } - slirp_ostream_write_u8(&f, 0); - - slirp_vmstate_save_state(&f, &vmstate_slirp, slirp); -} - - -int slirp_state_load(Slirp *slirp, int version_id, - SlirpReadCb read_cb, void *opaque) -{ - struct gfwd_list *ex_ptr; - SlirpIStream f = { - .read_cb = read_cb, - .opaque = opaque, - }; - - while (slirp_istream_read_u8(&f)) { - int ret; - struct socket *so = socreate(slirp); - - ret = slirp_vmstate_load_state(&f, &vmstate_slirp_socket, so, version_id); - if (ret < 0) { - return ret; - } - - if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) != - slirp->vnetwork_addr.s_addr) { - return -EINVAL; - } - for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { - if (ex_ptr->write_cb && - so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr && - so->so_fport == ex_ptr->ex_fport) { - break; - } - } - if (!ex_ptr) { - return -EINVAL; - } - } - - return slirp_vmstate_load_state(&f, &vmstate_slirp, slirp, version_id); -} - -int slirp_state_version(void) -{ - return 4; -} diff --git a/slirp/src/stream.c b/slirp/src/stream.c deleted file mode 100644 index 9c1764c0b7..0000000000 --- a/slirp/src/stream.c +++ /dev/null @@ -1,120 +0,0 @@ -/* SPDX-License-Identifier: MIT */ -/* - * libslirp io streams - * - * Copyright (c) 2018 Red Hat, Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "stream.h" -#include <glib.h> - -bool slirp_istream_read(SlirpIStream *f, void *buf, size_t size) -{ - return f->read_cb(buf, size, f->opaque) == size; -} - -bool slirp_ostream_write(SlirpOStream *f, const void *buf, size_t size) -{ - return f->write_cb(buf, size, f->opaque) == size; -} - -uint8_t slirp_istream_read_u8(SlirpIStream *f) -{ - uint8_t b; - - if (slirp_istream_read(f, &b, sizeof(b))) { - return b; - } - - return 0; -} - -bool slirp_ostream_write_u8(SlirpOStream *f, uint8_t b) -{ - return slirp_ostream_write(f, &b, sizeof(b)); -} - -uint16_t slirp_istream_read_u16(SlirpIStream *f) -{ - uint16_t b; - - if (slirp_istream_read(f, &b, sizeof(b))) { - return GUINT16_FROM_BE(b); - } - - return 0; -} - -bool slirp_ostream_write_u16(SlirpOStream *f, uint16_t b) -{ - b = GUINT16_TO_BE(b); - return slirp_ostream_write(f, &b, sizeof(b)); -} - -uint32_t slirp_istream_read_u32(SlirpIStream *f) -{ - uint32_t b; - - if (slirp_istream_read(f, &b, sizeof(b))) { - return GUINT32_FROM_BE(b); - } - - return 0; -} - -bool slirp_ostream_write_u32(SlirpOStream *f, uint32_t b) -{ - b = GUINT32_TO_BE(b); - return slirp_ostream_write(f, &b, sizeof(b)); -} - -int16_t slirp_istream_read_i16(SlirpIStream *f) -{ - int16_t b; - - if (slirp_istream_read(f, &b, sizeof(b))) { - return GINT16_FROM_BE(b); - } - - return 0; -} - -bool slirp_ostream_write_i16(SlirpOStream *f, int16_t b) -{ - b = GINT16_TO_BE(b); - return slirp_ostream_write(f, &b, sizeof(b)); -} - -int32_t slirp_istream_read_i32(SlirpIStream *f) -{ - int32_t b; - - if (slirp_istream_read(f, &b, sizeof(b))) { - return GINT32_FROM_BE(b); - } - - return 0; -} - -bool slirp_ostream_write_i32(SlirpOStream *f, int32_t b) -{ - b = GINT32_TO_BE(b); - return slirp_ostream_write(f, &b, sizeof(b)); -} diff --git a/slirp/src/stream.h b/slirp/src/stream.h deleted file mode 100644 index 08bb5b6610..0000000000 --- a/slirp/src/stream.h +++ /dev/null @@ -1,35 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -#ifndef STREAM_H_ -#define STREAM_H_ - -#include "libslirp.h" - -typedef struct SlirpIStream { - SlirpReadCb read_cb; - void *opaque; -} SlirpIStream; - -typedef struct SlirpOStream { - SlirpWriteCb write_cb; - void *opaque; -} SlirpOStream; - -bool slirp_istream_read(SlirpIStream *f, void *buf, size_t size); -bool slirp_ostream_write(SlirpOStream *f, const void *buf, size_t size); - -uint8_t slirp_istream_read_u8(SlirpIStream *f); -bool slirp_ostream_write_u8(SlirpOStream *f, uint8_t b); - -uint16_t slirp_istream_read_u16(SlirpIStream *f); -bool slirp_ostream_write_u16(SlirpOStream *f, uint16_t b); - -uint32_t slirp_istream_read_u32(SlirpIStream *f); -bool slirp_ostream_write_u32(SlirpOStream *f, uint32_t b); - -int16_t slirp_istream_read_i16(SlirpIStream *f); -bool slirp_ostream_write_i16(SlirpOStream *f, int16_t b); - -int32_t slirp_istream_read_i32(SlirpIStream *f); -bool slirp_ostream_write_i32(SlirpOStream *f, int32_t b); - -#endif /* STREAM_H_ */ diff --git a/slirp/src/tcp.h b/slirp/src/tcp.h deleted file mode 100644 index 79d3251bb5..0000000000 --- a/slirp/src/tcp.h +++ /dev/null @@ -1,181 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)tcp.h 8.1 (Berkeley) 6/10/93 - * tcp.h,v 1.3 1994/08/21 05:27:34 paul Exp - */ - -#ifndef TCP_H -#define TCP_H - -#include <glib.h> - -typedef uint32_t tcp_seq; - -#define PR_SLOWHZ 2 /* 2 slow timeouts per second (approx) */ -#define PR_FASTHZ 5 /* 5 fast timeouts per second (not important) */ - -#define TCP_SNDSPACE 8192 -#define TCP_RCVSPACE 8192 - -/* - * TCP header. - * Per RFC 793, September, 1981. - */ -#define tcphdr slirp_tcphdr -struct tcphdr { - uint16_t th_sport; /* source port */ - uint16_t th_dport; /* destination port */ - tcp_seq th_seq; /* sequence number */ - tcp_seq th_ack; /* acknowledgement number */ -#if G_BYTE_ORDER == G_BIG_ENDIAN - uint8_t th_off:4, /* data offset */ - th_x2:4; /* (unused) */ -#else - uint8_t th_x2:4, /* (unused) */ - th_off:4; /* data offset */ -#endif - uint8_t th_flags; - uint16_t th_win; /* window */ - uint16_t th_sum; /* checksum */ - uint16_t th_urp; /* urgent pointer */ -}; - -#include "tcp_var.h" - -#ifndef TH_FIN -#define TH_FIN 0x01 -#define TH_SYN 0x02 -#define TH_RST 0x04 -#define TH_PUSH 0x08 -#define TH_ACK 0x10 -#define TH_URG 0x20 -#endif - -#ifndef TCPOPT_EOL -#define TCPOPT_EOL 0 -#define TCPOPT_NOP 1 -#define TCPOPT_MAXSEG 2 -#define TCPOPT_WINDOW 3 -#define TCPOPT_SACK_PERMITTED 4 /* Experimental */ -#define TCPOPT_SACK 5 /* Experimental */ -#define TCPOPT_TIMESTAMP 8 - -#define TCPOPT_TSTAMP_HDR \ - (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP) -#endif - -#ifndef TCPOLEN_MAXSEG -#define TCPOLEN_MAXSEG 4 -#define TCPOLEN_WINDOW 3 -#define TCPOLEN_SACK_PERMITTED 2 -#define TCPOLEN_TIMESTAMP 10 -#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ -#endif - -/* - * Default maximum segment size for TCP. - * With an IP MSS of 576, this is 536, - * but 512 is probably more convenient. - * This should be defined as MIN(512, IP_MSS - sizeof (struct tcpiphdr)). - * - * We make this 1460 because we only care about Ethernet in the qemu context. - */ -#undef TCP_MSS -#define TCP_MSS 1460 -#undef TCP6_MSS -#define TCP6_MSS 1440 - -#undef TCP_MAXWIN -#define TCP_MAXWIN 65535 /* largest value for (unscaled) window */ - -#undef TCP_MAX_WINSHIFT -#define TCP_MAX_WINSHIFT 14 /* maximum window shift */ - -/* - * User-settable options (used with setsockopt). - * - * We don't use the system headers on unix because we have conflicting - * local structures. We can't avoid the system definitions on Windows, - * so we undefine them. - */ -#undef TCP_NODELAY -#define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */ -#undef TCP_MAXSEG - -/* - * TCP FSM state definitions. - * Per RFC793, September, 1981. - */ - -#define TCP_NSTATES 11 - -#define TCPS_CLOSED 0 /* closed */ -#define TCPS_LISTEN 1 /* listening for connection */ -#define TCPS_SYN_SENT 2 /* active, have sent syn */ -#define TCPS_SYN_RECEIVED 3 /* have send and received syn */ -/* states < TCPS_ESTABLISHED are those where connections not established */ -#define TCPS_ESTABLISHED 4 /* established */ -#define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */ -/* states > TCPS_CLOSE_WAIT are those where user has closed */ -#define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */ -#define TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */ -#define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */ -/* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */ -#define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */ -#define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */ - -#define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RECEIVED) -#define TCPS_HAVEESTABLISHED(s) ((s) >= TCPS_ESTABLISHED) -#define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT) - -/* - * TCP sequence numbers are 32 bit integers operated - * on with modular arithmetic. These macros can be - * used to compare such integers. - */ -#define SEQ_LT(a,b) ((int)((a)-(b)) < 0) -#define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0) -#define SEQ_GT(a,b) ((int)((a)-(b)) > 0) -#define SEQ_GEQ(a,b) ((int)((a)-(b)) >= 0) - -/* - * Macros to initialize tcp sequence numbers for - * send and receive from initial send and receive - * sequence numbers. - */ -#define tcp_rcvseqinit(tp) \ - (tp)->rcv_adv = (tp)->rcv_nxt = (tp)->irs + 1 - -#define tcp_sendseqinit(tp) \ - (tp)->snd_una = (tp)->snd_nxt = (tp)->snd_max = (tp)->snd_up = (tp)->iss - -#define TCP_ISSINCR (125*1024) /* increment for tcp_iss each second */ - -#endif diff --git a/slirp/src/tcp_input.c b/slirp/src/tcp_input.c deleted file mode 100644 index 50a1145ec9..0000000000 --- a/slirp/src/tcp_input.c +++ /dev/null @@ -1,1554 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1994 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)tcp_input.c 8.5 (Berkeley) 4/10/94 - * tcp_input.c,v 1.10 1994/10/13 18:36:32 wollman Exp - */ - -/* - * Changes and additions relating to SLiRP - * Copyright (c) 1995 Danny Gasparovski. - */ - -#include "slirp.h" -#include "ip_icmp.h" - -#define TCPREXMTTHRESH 3 - -#define TCP_PAWS_IDLE (24 * 24 * 60 * 60 * PR_SLOWHZ) - -/* for modulo comparisons of timestamps */ -#define TSTMP_LT(a,b) ((int)((a)-(b)) < 0) -#define TSTMP_GEQ(a,b) ((int)((a)-(b)) >= 0) - -/* - * Insert segment ti into reassembly queue of tcp with - * control block tp. Return TH_FIN if reassembly now includes - * a segment with FIN. The macro form does the common case inline - * (segment is the next to be received on an established connection, - * and the queue is empty), avoiding linkage into and removal - * from the queue and repetition of various conversions. - * Set DELACK for segments received in order, but ack immediately - * when segments are out of order (so fast retransmit can work). - */ -#define TCP_REASS(tp, ti, m, so, flags) { \ - if ((ti)->ti_seq == (tp)->rcv_nxt && \ - tcpfrag_list_empty(tp) && \ - (tp)->t_state == TCPS_ESTABLISHED) { \ - tp->t_flags |= TF_DELACK; \ - (tp)->rcv_nxt += (ti)->ti_len; \ - flags = (ti)->ti_flags & TH_FIN; \ - if (so->so_emu) { \ - if (tcp_emu((so),(m))) sbappend(so, (m)); \ - } else \ - sbappend((so), (m)); \ - } else { \ - (flags) = tcp_reass((tp), (ti), (m)); \ - tp->t_flags |= TF_ACKNOW; \ - } \ -} - -static void tcp_dooptions(struct tcpcb *tp, uint8_t *cp, int cnt, - struct tcpiphdr *ti); -static void tcp_xmit_timer(register struct tcpcb *tp, int rtt); - -static int -tcp_reass(register struct tcpcb *tp, register struct tcpiphdr *ti, - struct mbuf *m) -{ - register struct tcpiphdr *q; - struct socket *so = tp->t_socket; - int flags; - - /* - * Call with ti==NULL after become established to - * force pre-ESTABLISHED data up to user socket. - */ - if (ti == NULL) - goto present; - - /* - * Find a segment which begins after this one does. - */ - for (q = tcpfrag_list_first(tp); !tcpfrag_list_end(q, tp); - q = tcpiphdr_next(q)) - if (SEQ_GT(q->ti_seq, ti->ti_seq)) - break; - - /* - * If there is a preceding segment, it may provide some of - * our data already. If so, drop the data from the incoming - * segment. If it provides all of our data, drop us. - */ - if (!tcpfrag_list_end(tcpiphdr_prev(q), tp)) { - register int i; - q = tcpiphdr_prev(q); - /* conversion to int (in i) handles seq wraparound */ - i = q->ti_seq + q->ti_len - ti->ti_seq; - if (i > 0) { - if (i >= ti->ti_len) { - m_free(m); - /* - * Try to present any queued data - * at the left window edge to the user. - * This is needed after the 3-WHS - * completes. - */ - goto present; /* ??? */ - } - m_adj(m, i); - ti->ti_len -= i; - ti->ti_seq += i; - } - q = tcpiphdr_next(q); - } - ti->ti_mbuf = m; - - /* - * While we overlap succeeding segments trim them or, - * if they are completely covered, dequeue them. - */ - while (!tcpfrag_list_end(q, tp)) { - register int i = (ti->ti_seq + ti->ti_len) - q->ti_seq; - if (i <= 0) - break; - if (i < q->ti_len) { - q->ti_seq += i; - q->ti_len -= i; - m_adj(q->ti_mbuf, i); - break; - } - q = tcpiphdr_next(q); - m = tcpiphdr_prev(q)->ti_mbuf; - remque(tcpiphdr2qlink(tcpiphdr_prev(q))); - m_free(m); - } - - /* - * Stick new segment in its place. - */ - insque(tcpiphdr2qlink(ti), tcpiphdr2qlink(tcpiphdr_prev(q))); - -present: - /* - * Present data to user, advancing rcv_nxt through - * completed sequence space. - */ - if (!TCPS_HAVEESTABLISHED(tp->t_state)) - return (0); - ti = tcpfrag_list_first(tp); - if (tcpfrag_list_end(ti, tp) || ti->ti_seq != tp->rcv_nxt) - return (0); - if (tp->t_state == TCPS_SYN_RECEIVED && ti->ti_len) - return (0); - do { - tp->rcv_nxt += ti->ti_len; - flags = ti->ti_flags & TH_FIN; - remque(tcpiphdr2qlink(ti)); - m = ti->ti_mbuf; - ti = tcpiphdr_next(ti); - if (so->so_state & SS_FCANTSENDMORE) - m_free(m); - else { - if (so->so_emu) { - if (tcp_emu(so,m)) sbappend(so, m); - } else - sbappend(so, m); - } - } while (ti != (struct tcpiphdr *)tp && ti->ti_seq == tp->rcv_nxt); - return (flags); -} - -/* - * TCP input routine, follows pages 65-76 of the - * protocol specification dated September, 1981 very closely. - */ -void -tcp_input(struct mbuf *m, int iphlen, struct socket *inso, unsigned short af) -{ - struct ip save_ip, *ip; - struct ip6 save_ip6, *ip6; - register struct tcpiphdr *ti; - char *optp = NULL; - int optlen = 0; - int len, tlen, off; - register struct tcpcb *tp = NULL; - register int tiflags; - struct socket *so = NULL; - int todrop, acked, ourfinisacked, needoutput = 0; - int iss = 0; - uint32_t tiwin; - int ret; - struct sockaddr_storage lhost, fhost; - struct sockaddr_in *lhost4, *fhost4; - struct sockaddr_in6 *lhost6, *fhost6; - struct gfwd_list *ex_ptr; - Slirp *slirp; - - DEBUG_CALL("tcp_input"); - DEBUG_ARG("m = %p iphlen = %2d inso = %p", - m, iphlen, inso); - - /* - * If called with m == 0, then we're continuing the connect - */ - if (m == NULL) { - so = inso; - slirp = so->slirp; - - /* Re-set a few variables */ - tp = sototcpcb(so); - m = so->so_m; - so->so_m = NULL; - ti = so->so_ti; - tiwin = ti->ti_win; - tiflags = ti->ti_flags; - - goto cont_conn; - } - slirp = m->slirp; - - ip = mtod(m, struct ip *); - ip6 = mtod(m, struct ip6 *); - - switch (af) { - case AF_INET: - if (iphlen > sizeof(struct ip)) { - ip_stripoptions(m, (struct mbuf *)0); - iphlen = sizeof(struct ip); - } - /* XXX Check if too short */ - - - /* - * Save a copy of the IP header in case we want restore it - * for sending an ICMP error message in response. - */ - save_ip = *ip; - save_ip.ip_len += iphlen; - - /* - * Get IP and TCP header together in first mbuf. - * Note: IP leaves IP header in first mbuf. - */ - m->m_data -= sizeof(struct tcpiphdr) - sizeof(struct ip) - - sizeof(struct tcphdr); - m->m_len += sizeof(struct tcpiphdr) - sizeof(struct ip) - - sizeof(struct tcphdr); - ti = mtod(m, struct tcpiphdr *); - - /* - * Checksum extended TCP header and data. - */ - tlen = ip->ip_len; - tcpiphdr2qlink(ti)->next = tcpiphdr2qlink(ti)->prev = NULL; - memset(&ti->ih_mbuf, 0 , sizeof(struct mbuf_ptr)); - memset(&ti->ti, 0, sizeof(ti->ti)); - ti->ti_x0 = 0; - ti->ti_src = save_ip.ip_src; - ti->ti_dst = save_ip.ip_dst; - ti->ti_pr = save_ip.ip_p; - ti->ti_len = htons((uint16_t)tlen); - break; - - case AF_INET6: - /* - * Save a copy of the IP header in case we want restore it - * for sending an ICMP error message in response. - */ - save_ip6 = *ip6; - /* - * Get IP and TCP header together in first mbuf. - * Note: IP leaves IP header in first mbuf. - */ - m->m_data -= sizeof(struct tcpiphdr) - (sizeof(struct ip6) - + sizeof(struct tcphdr)); - m->m_len += sizeof(struct tcpiphdr) - (sizeof(struct ip6) - + sizeof(struct tcphdr)); - ti = mtod(m, struct tcpiphdr *); - - tlen = ip6->ip_pl; - tcpiphdr2qlink(ti)->next = tcpiphdr2qlink(ti)->prev = NULL; - memset(&ti->ih_mbuf, 0 , sizeof(struct mbuf_ptr)); - memset(&ti->ti, 0, sizeof(ti->ti)); - ti->ti_x0 = 0; - ti->ti_src6 = save_ip6.ip_src; - ti->ti_dst6 = save_ip6.ip_dst; - ti->ti_nh6 = save_ip6.ip_nh; - ti->ti_len = htons((uint16_t)tlen); - break; - - default: - g_assert_not_reached(); - } - - len = ((sizeof(struct tcpiphdr) - sizeof(struct tcphdr)) + tlen); - if (cksum(m, len)) { - goto drop; - } - - /* - * Check that TCP offset makes sense, - * pull out TCP options and adjust length. XXX - */ - off = ti->ti_off << 2; - if (off < sizeof (struct tcphdr) || off > tlen) { - goto drop; - } - tlen -= off; - ti->ti_len = tlen; - if (off > sizeof (struct tcphdr)) { - optlen = off - sizeof (struct tcphdr); - optp = mtod(m, char *) + sizeof (struct tcpiphdr); - } - tiflags = ti->ti_flags; - - /* - * Convert TCP protocol specific fields to host format. - */ - NTOHL(ti->ti_seq); - NTOHL(ti->ti_ack); - NTOHS(ti->ti_win); - NTOHS(ti->ti_urp); - - /* - * Drop TCP, IP headers and TCP options. - */ - m->m_data += sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr); - m->m_len -= sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr); - - /* - * Locate pcb for segment. - */ -findso: - lhost.ss_family = af; - fhost.ss_family = af; - switch (af) { - case AF_INET: - lhost4 = (struct sockaddr_in *) &lhost; - lhost4->sin_addr = ti->ti_src; - lhost4->sin_port = ti->ti_sport; - fhost4 = (struct sockaddr_in *) &fhost; - fhost4->sin_addr = ti->ti_dst; - fhost4->sin_port = ti->ti_dport; - break; - case AF_INET6: - lhost6 = (struct sockaddr_in6 *) &lhost; - lhost6->sin6_addr = ti->ti_src6; - lhost6->sin6_port = ti->ti_sport; - fhost6 = (struct sockaddr_in6 *) &fhost; - fhost6->sin6_addr = ti->ti_dst6; - fhost6->sin6_port = ti->ti_dport; - break; - default: - g_assert_not_reached(); - } - - so = solookup(&slirp->tcp_last_so, &slirp->tcb, &lhost, &fhost); - - /* - * If the state is CLOSED (i.e., TCB does not exist) then - * all data in the incoming segment is discarded. - * If the TCB exists but is in CLOSED state, it is embryonic, - * but should either do a listen or a connect soon. - * - * state == CLOSED means we've done socreate() but haven't - * attached it to a protocol yet... - * - * XXX If a TCB does not exist, and the TH_SYN flag is - * the only flag set, then create a session, mark it - * as if it was LISTENING, and continue... - */ - if (so == NULL) { - /* TODO: IPv6 */ - if (slirp->restricted) { - /* Any hostfwds will have an existing socket, so we only get here - * for non-hostfwd connections. These should be dropped, unless it - * happens to be a guestfwd. - */ - for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { - if (ex_ptr->ex_fport == ti->ti_dport && - ti->ti_dst.s_addr == ex_ptr->ex_addr.s_addr) { - break; - } - } - if (!ex_ptr) { - goto dropwithreset; - } - } - - if ((tiflags & (TH_SYN|TH_FIN|TH_RST|TH_URG|TH_ACK)) != TH_SYN) - goto dropwithreset; - - so = socreate(slirp); - if (tcp_attach(so) < 0) { - g_free(so); /* Not sofree (if it failed, it's not insqued) */ - goto dropwithreset; - } - - sbreserve(&so->so_snd, TCP_SNDSPACE); - sbreserve(&so->so_rcv, TCP_RCVSPACE); - - so->lhost.ss = lhost; - so->fhost.ss = fhost; - - so->so_iptos = tcp_tos(so); - if (so->so_iptos == 0) { - switch (af) { - case AF_INET: - so->so_iptos = ((struct ip *)ti)->ip_tos; - break; - case AF_INET6: - break; - default: - g_assert_not_reached(); - } - } - - tp = sototcpcb(so); - tp->t_state = TCPS_LISTEN; - } - - /* - * If this is a still-connecting socket, this probably - * a retransmit of the SYN. Whether it's a retransmit SYN - * or something else, we nuke it. - */ - if (so->so_state & SS_ISFCONNECTING) - goto drop; - - tp = sototcpcb(so); - - /* XXX Should never fail */ - if (tp == NULL) - goto dropwithreset; - if (tp->t_state == TCPS_CLOSED) - goto drop; - - tiwin = ti->ti_win; - - /* - * Segment received on connection. - * Reset idle time and keep-alive timer. - */ - tp->t_idle = 0; - if (slirp_do_keepalive) - tp->t_timer[TCPT_KEEP] = TCPTV_KEEPINTVL; - else - tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_IDLE; - - /* - * Process options if not in LISTEN state, - * else do it below (after getting remote address). - */ - if (optp && tp->t_state != TCPS_LISTEN) - tcp_dooptions(tp, (uint8_t *)optp, optlen, ti); - - /* - * Header prediction: check for the two common cases - * of a uni-directional data xfer. If the packet has - * no control flags, is in-sequence, the window didn't - * change and we're not retransmitting, it's a - * candidate. If the length is zero and the ack moved - * forward, we're the sender side of the xfer. Just - * free the data acked & wake any higher level process - * that was blocked waiting for space. If the length - * is non-zero and the ack didn't move, we're the - * receiver side. If we're getting packets in-order - * (the reassembly queue is empty), add the data to - * the socket buffer and note that we need a delayed ack. - * - * XXX Some of these tests are not needed - * eg: the tiwin == tp->snd_wnd prevents many more - * predictions.. with no *real* advantage.. - */ - if (tp->t_state == TCPS_ESTABLISHED && - (tiflags & (TH_SYN|TH_FIN|TH_RST|TH_URG|TH_ACK)) == TH_ACK && - ti->ti_seq == tp->rcv_nxt && - tiwin && tiwin == tp->snd_wnd && - tp->snd_nxt == tp->snd_max) { - if (ti->ti_len == 0) { - if (SEQ_GT(ti->ti_ack, tp->snd_una) && - SEQ_LEQ(ti->ti_ack, tp->snd_max) && - tp->snd_cwnd >= tp->snd_wnd) { - /* - * this is a pure ack for outstanding data. - */ - if (tp->t_rtt && - SEQ_GT(ti->ti_ack, tp->t_rtseq)) - tcp_xmit_timer(tp, tp->t_rtt); - acked = ti->ti_ack - tp->snd_una; - sodrop(so, acked); - tp->snd_una = ti->ti_ack; - m_free(m); - - /* - * If all outstanding data are acked, stop - * retransmit timer, otherwise restart timer - * using current (possibly backed-off) value. - * If process is waiting for space, - * wakeup/selwakeup/signal. If data - * are ready to send, let tcp_output - * decide between more output or persist. - */ - if (tp->snd_una == tp->snd_max) - tp->t_timer[TCPT_REXMT] = 0; - else if (tp->t_timer[TCPT_PERSIST] == 0) - tp->t_timer[TCPT_REXMT] = tp->t_rxtcur; - - /* - * This is called because sowwakeup might have - * put data into so_snd. Since we don't so sowwakeup, - * we don't need this.. XXX??? - */ - if (so->so_snd.sb_cc) - (void) tcp_output(tp); - - return; - } - } else if (ti->ti_ack == tp->snd_una && - tcpfrag_list_empty(tp) && - ti->ti_len <= sbspace(&so->so_rcv)) { - /* - * this is a pure, in-sequence data packet - * with nothing on the reassembly queue and - * we have enough buffer space to take it. - */ - tp->rcv_nxt += ti->ti_len; - /* - * Add data to socket buffer. - */ - if (so->so_emu) { - if (tcp_emu(so,m)) sbappend(so, m); - } else - sbappend(so, m); - - /* - * If this is a short packet, then ACK now - with Nagel - * congestion avoidance sender won't send more until - * he gets an ACK. - * - * It is better to not delay acks at all to maximize - * TCP throughput. See RFC 2581. - */ - tp->t_flags |= TF_ACKNOW; - tcp_output(tp); - return; - } - } /* header prediction */ - /* - * Calculate amount of space in receive window, - * and then do TCP input processing. - * Receive window is amount of space in rcv queue, - * but not less than advertised window. - */ - { int win; - win = sbspace(&so->so_rcv); - if (win < 0) - win = 0; - tp->rcv_wnd = MAX(win, (int)(tp->rcv_adv - tp->rcv_nxt)); - } - - switch (tp->t_state) { - - /* - * If the state is LISTEN then ignore segment if it contains an RST. - * If the segment contains an ACK then it is bad and send a RST. - * If it does not contain a SYN then it is not interesting; drop it. - * Don't bother responding if the destination was a broadcast. - * Otherwise initialize tp->rcv_nxt, and tp->irs, select an initial - * tp->iss, and send a segment: - * <SEQ=ISS><ACK=RCV_NXT><CTL=SYN,ACK> - * Also initialize tp->snd_nxt to tp->iss+1 and tp->snd_una to tp->iss. - * Fill in remote peer address fields if not previously specified. - * Enter SYN_RECEIVED state, and process any other fields of this - * segment in this state. - */ - case TCPS_LISTEN: { - - if (tiflags & TH_RST) - goto drop; - if (tiflags & TH_ACK) - goto dropwithreset; - if ((tiflags & TH_SYN) == 0) - goto drop; - - /* - * This has way too many gotos... - * But a bit of spaghetti code never hurt anybody :) - */ - - /* - * If this is destined for the control address, then flag to - * tcp_ctl once connected, otherwise connect - */ - /* TODO: IPv6 */ - if (af == AF_INET && - (so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) == - slirp->vnetwork_addr.s_addr) { - if (so->so_faddr.s_addr != slirp->vhost_addr.s_addr && - so->so_faddr.s_addr != slirp->vnameserver_addr.s_addr) { - /* May be an add exec */ - for (ex_ptr = slirp->guestfwd_list; ex_ptr; - ex_ptr = ex_ptr->ex_next) { - if(ex_ptr->ex_fport == so->so_fport && - so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr) { - so->so_state |= SS_CTL; - break; - } - } - if (so->so_state & SS_CTL) { - goto cont_input; - } - } - /* CTL_ALIAS: Do nothing, tcp_fconnect will be called on it */ - } - - if (so->so_emu & EMU_NOCONNECT) { - so->so_emu &= ~EMU_NOCONNECT; - goto cont_input; - } - - if ((tcp_fconnect(so, so->so_ffamily) == -1) && - (errno != EAGAIN) && - (errno != EINPROGRESS) && (errno != EWOULDBLOCK) - ) { - uint8_t code; - DEBUG_MISC(" tcp fconnect errno = %d-%s", errno, strerror(errno)); - if(errno == ECONNREFUSED) { - /* ACK the SYN, send RST to refuse the connection */ - tcp_respond(tp, ti, m, ti->ti_seq + 1, (tcp_seq) 0, - TH_RST | TH_ACK, af); - } else { - switch (af) { - case AF_INET: - code = ICMP_UNREACH_NET; - if (errno == EHOSTUNREACH) { - code = ICMP_UNREACH_HOST; - } - break; - case AF_INET6: - code = ICMP6_UNREACH_NO_ROUTE; - if (errno == EHOSTUNREACH) { - code = ICMP6_UNREACH_ADDRESS; - } - break; - default: - g_assert_not_reached(); - } - HTONL(ti->ti_seq); /* restore tcp header */ - HTONL(ti->ti_ack); - HTONS(ti->ti_win); - HTONS(ti->ti_urp); - m->m_data -= sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr); - m->m_len += sizeof(struct tcpiphdr)+off-sizeof(struct tcphdr); - switch (af) { - case AF_INET: - m->m_data += sizeof(struct tcpiphdr) - sizeof(struct ip) - - sizeof(struct tcphdr); - m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct ip) - - sizeof(struct tcphdr); - *ip = save_ip; - icmp_send_error(m, ICMP_UNREACH, code, 0, strerror(errno)); - break; - case AF_INET6: - m->m_data += sizeof(struct tcpiphdr) - (sizeof(struct ip6) - + sizeof(struct tcphdr)); - m->m_len -= sizeof(struct tcpiphdr) - (sizeof(struct ip6) - + sizeof(struct tcphdr)); - *ip6 = save_ip6; - icmp6_send_error(m, ICMP6_UNREACH, code); - break; - default: - g_assert_not_reached(); - } - } - tcp_close(tp); - m_free(m); - } else { - /* - * Haven't connected yet, save the current mbuf - * and ti, and return - * XXX Some OS's don't tell us whether the connect() - * succeeded or not. So we must time it out. - */ - so->so_m = m; - so->so_ti = ti; - tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT; - tp->t_state = TCPS_SYN_RECEIVED; - /* - * Initialize receive sequence numbers now so that we can send a - * valid RST if the remote end rejects our connection. - */ - tp->irs = ti->ti_seq; - tcp_rcvseqinit(tp); - tcp_template(tp); - } - return; - - cont_conn: - /* m==NULL - * Check if the connect succeeded - */ - if (so->so_state & SS_NOFDREF) { - tp = tcp_close(tp); - goto dropwithreset; - } - cont_input: - tcp_template(tp); - - if (optp) - tcp_dooptions(tp, (uint8_t *)optp, optlen, ti); - - if (iss) - tp->iss = iss; - else - tp->iss = slirp->tcp_iss; - slirp->tcp_iss += TCP_ISSINCR/2; - tp->irs = ti->ti_seq; - tcp_sendseqinit(tp); - tcp_rcvseqinit(tp); - tp->t_flags |= TF_ACKNOW; - tp->t_state = TCPS_SYN_RECEIVED; - tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT; - goto trimthenstep6; - } /* case TCPS_LISTEN */ - - /* - * If the state is SYN_SENT: - * if seg contains an ACK, but not for our SYN, drop the input. - * if seg contains a RST, then drop the connection. - * if seg does not contain SYN, then drop it. - * Otherwise this is an acceptable SYN segment - * initialize tp->rcv_nxt and tp->irs - * if seg contains ack then advance tp->snd_una - * if SYN has been acked change to ESTABLISHED else SYN_RCVD state - * arrange for segment to be acked (eventually) - * continue processing rest of data/controls, beginning with URG - */ - case TCPS_SYN_SENT: - if ((tiflags & TH_ACK) && - (SEQ_LEQ(ti->ti_ack, tp->iss) || - SEQ_GT(ti->ti_ack, tp->snd_max))) - goto dropwithreset; - - if (tiflags & TH_RST) { - if (tiflags & TH_ACK) { - tcp_drop(tp, 0); /* XXX Check t_softerror! */ - } - goto drop; - } - - if ((tiflags & TH_SYN) == 0) - goto drop; - if (tiflags & TH_ACK) { - tp->snd_una = ti->ti_ack; - if (SEQ_LT(tp->snd_nxt, tp->snd_una)) - tp->snd_nxt = tp->snd_una; - } - - tp->t_timer[TCPT_REXMT] = 0; - tp->irs = ti->ti_seq; - tcp_rcvseqinit(tp); - tp->t_flags |= TF_ACKNOW; - if (tiflags & TH_ACK && SEQ_GT(tp->snd_una, tp->iss)) { - soisfconnected(so); - tp->t_state = TCPS_ESTABLISHED; - - (void) tcp_reass(tp, (struct tcpiphdr *)0, - (struct mbuf *)0); - /* - * if we didn't have to retransmit the SYN, - * use its rtt as our initial srtt & rtt var. - */ - if (tp->t_rtt) - tcp_xmit_timer(tp, tp->t_rtt); - } else - tp->t_state = TCPS_SYN_RECEIVED; - -trimthenstep6: - /* - * Advance ti->ti_seq to correspond to first data byte. - * If data, trim to stay within window, - * dropping FIN if necessary. - */ - ti->ti_seq++; - if (ti->ti_len > tp->rcv_wnd) { - todrop = ti->ti_len - tp->rcv_wnd; - m_adj(m, -todrop); - ti->ti_len = tp->rcv_wnd; - tiflags &= ~TH_FIN; - } - tp->snd_wl1 = ti->ti_seq - 1; - tp->rcv_up = ti->ti_seq; - goto step6; - } /* switch tp->t_state */ - /* - * States other than LISTEN or SYN_SENT. - * Check that at least some bytes of segment are within - * receive window. If segment begins before rcv_nxt, - * drop leading data (and SYN); if nothing left, just ack. - */ - todrop = tp->rcv_nxt - ti->ti_seq; - if (todrop > 0) { - if (tiflags & TH_SYN) { - tiflags &= ~TH_SYN; - ti->ti_seq++; - if (ti->ti_urp > 1) - ti->ti_urp--; - else - tiflags &= ~TH_URG; - todrop--; - } - /* - * Following if statement from Stevens, vol. 2, p. 960. - */ - if (todrop > ti->ti_len - || (todrop == ti->ti_len && (tiflags & TH_FIN) == 0)) { - /* - * Any valid FIN must be to the left of the window. - * At this point the FIN must be a duplicate or out - * of sequence; drop it. - */ - tiflags &= ~TH_FIN; - - /* - * Send an ACK to resynchronize and drop any data. - * But keep on processing for RST or ACK. - */ - tp->t_flags |= TF_ACKNOW; - todrop = ti->ti_len; - } - m_adj(m, todrop); - ti->ti_seq += todrop; - ti->ti_len -= todrop; - if (ti->ti_urp > todrop) - ti->ti_urp -= todrop; - else { - tiflags &= ~TH_URG; - ti->ti_urp = 0; - } - } - /* - * If new data are received on a connection after the - * user processes are gone, then RST the other end. - */ - if ((so->so_state & SS_NOFDREF) && - tp->t_state > TCPS_CLOSE_WAIT && ti->ti_len) { - tp = tcp_close(tp); - goto dropwithreset; - } - - /* - * If segment ends after window, drop trailing data - * (and PUSH and FIN); if nothing left, just ACK. - */ - todrop = (ti->ti_seq+ti->ti_len) - (tp->rcv_nxt+tp->rcv_wnd); - if (todrop > 0) { - if (todrop >= ti->ti_len) { - /* - * If a new connection request is received - * while in TIME_WAIT, drop the old connection - * and start over if the sequence numbers - * are above the previous ones. - */ - if (tiflags & TH_SYN && - tp->t_state == TCPS_TIME_WAIT && - SEQ_GT(ti->ti_seq, tp->rcv_nxt)) { - iss = tp->rcv_nxt + TCP_ISSINCR; - tp = tcp_close(tp); - goto findso; - } - /* - * If window is closed can only take segments at - * window edge, and have to drop data and PUSH from - * incoming segments. Continue processing, but - * remember to ack. Otherwise, drop segment - * and ack. - */ - if (tp->rcv_wnd == 0 && ti->ti_seq == tp->rcv_nxt) { - tp->t_flags |= TF_ACKNOW; - } else { - goto dropafterack; - } - } - m_adj(m, -todrop); - ti->ti_len -= todrop; - tiflags &= ~(TH_PUSH|TH_FIN); - } - - /* - * If the RST bit is set examine the state: - * SYN_RECEIVED STATE: - * If passive open, return to LISTEN state. - * If active open, inform user that connection was refused. - * ESTABLISHED, FIN_WAIT_1, FIN_WAIT2, CLOSE_WAIT STATES: - * Inform user that connection was reset, and close tcb. - * CLOSING, LAST_ACK, TIME_WAIT STATES - * Close the tcb. - */ - if (tiflags&TH_RST) switch (tp->t_state) { - - case TCPS_SYN_RECEIVED: - case TCPS_ESTABLISHED: - case TCPS_FIN_WAIT_1: - case TCPS_FIN_WAIT_2: - case TCPS_CLOSE_WAIT: - tp->t_state = TCPS_CLOSED; - tcp_close(tp); - goto drop; - - case TCPS_CLOSING: - case TCPS_LAST_ACK: - case TCPS_TIME_WAIT: - tcp_close(tp); - goto drop; - } - - /* - * If a SYN is in the window, then this is an - * error and we send an RST and drop the connection. - */ - if (tiflags & TH_SYN) { - tp = tcp_drop(tp,0); - goto dropwithreset; - } - - /* - * If the ACK bit is off we drop the segment and return. - */ - if ((tiflags & TH_ACK) == 0) goto drop; - - /* - * Ack processing. - */ - switch (tp->t_state) { - /* - * In SYN_RECEIVED state if the ack ACKs our SYN then enter - * ESTABLISHED state and continue processing, otherwise - * send an RST. una<=ack<=max - */ - case TCPS_SYN_RECEIVED: - - if (SEQ_GT(tp->snd_una, ti->ti_ack) || - SEQ_GT(ti->ti_ack, tp->snd_max)) - goto dropwithreset; - tp->t_state = TCPS_ESTABLISHED; - /* - * The sent SYN is ack'ed with our sequence number +1 - * The first data byte already in the buffer will get - * lost if no correction is made. This is only needed for - * SS_CTL since the buffer is empty otherwise. - * tp->snd_una++; or: - */ - tp->snd_una=ti->ti_ack; - if (so->so_state & SS_CTL) { - /* So tcp_ctl reports the right state */ - ret = tcp_ctl(so); - if (ret == 1) { - soisfconnected(so); - so->so_state &= ~SS_CTL; /* success XXX */ - } else if (ret == 2) { - so->so_state &= SS_PERSISTENT_MASK; - so->so_state |= SS_NOFDREF; /* CTL_CMD */ - } else { - needoutput = 1; - tp->t_state = TCPS_FIN_WAIT_1; - } - } else { - soisfconnected(so); - } - - (void) tcp_reass(tp, (struct tcpiphdr *)0, (struct mbuf *)0); - tp->snd_wl1 = ti->ti_seq - 1; - /* Avoid ack processing; snd_una==ti_ack => dup ack */ - goto synrx_to_est; - /* fall into ... */ - - /* - * In ESTABLISHED state: drop duplicate ACKs; ACK out of range - * ACKs. If the ack is in the range - * tp->snd_una < ti->ti_ack <= tp->snd_max - * then advance tp->snd_una to ti->ti_ack and drop - * data from the retransmission queue. If this ACK reflects - * more up to date window information we update our window information. - */ - case TCPS_ESTABLISHED: - case TCPS_FIN_WAIT_1: - case TCPS_FIN_WAIT_2: - case TCPS_CLOSE_WAIT: - case TCPS_CLOSING: - case TCPS_LAST_ACK: - case TCPS_TIME_WAIT: - - if (SEQ_LEQ(ti->ti_ack, tp->snd_una)) { - if (ti->ti_len == 0 && tiwin == tp->snd_wnd) { - DEBUG_MISC(" dup ack m = %p so = %p", m, so); - /* - * If we have outstanding data (other than - * a window probe), this is a completely - * duplicate ack (ie, window info didn't - * change), the ack is the biggest we've - * seen and we've seen exactly our rexmt - * threshold of them, assume a packet - * has been dropped and retransmit it. - * Kludge snd_nxt & the congestion - * window so we send only this one - * packet. - * - * We know we're losing at the current - * window size so do congestion avoidance - * (set ssthresh to half the current window - * and pull our congestion window back to - * the new ssthresh). - * - * Dup acks mean that packets have left the - * network (they're now cached at the receiver) - * so bump cwnd by the amount in the receiver - * to keep a constant cwnd packets in the - * network. - */ - if (tp->t_timer[TCPT_REXMT] == 0 || - ti->ti_ack != tp->snd_una) - tp->t_dupacks = 0; - else if (++tp->t_dupacks == TCPREXMTTHRESH) { - tcp_seq onxt = tp->snd_nxt; - unsigned win = - MIN(tp->snd_wnd, tp->snd_cwnd) / - 2 / tp->t_maxseg; - - if (win < 2) - win = 2; - tp->snd_ssthresh = win * tp->t_maxseg; - tp->t_timer[TCPT_REXMT] = 0; - tp->t_rtt = 0; - tp->snd_nxt = ti->ti_ack; - tp->snd_cwnd = tp->t_maxseg; - (void) tcp_output(tp); - tp->snd_cwnd = tp->snd_ssthresh + - tp->t_maxseg * tp->t_dupacks; - if (SEQ_GT(onxt, tp->snd_nxt)) - tp->snd_nxt = onxt; - goto drop; - } else if (tp->t_dupacks > TCPREXMTTHRESH) { - tp->snd_cwnd += tp->t_maxseg; - (void) tcp_output(tp); - goto drop; - } - } else - tp->t_dupacks = 0; - break; - } - synrx_to_est: - /* - * If the congestion window was inflated to account - * for the other side's cached packets, retract it. - */ - if (tp->t_dupacks > TCPREXMTTHRESH && - tp->snd_cwnd > tp->snd_ssthresh) - tp->snd_cwnd = tp->snd_ssthresh; - tp->t_dupacks = 0; - if (SEQ_GT(ti->ti_ack, tp->snd_max)) { - goto dropafterack; - } - acked = ti->ti_ack - tp->snd_una; - - /* - * If transmit timer is running and timed sequence - * number was acked, update smoothed round trip time. - * Since we now have an rtt measurement, cancel the - * timer backoff (cf., Phil Karn's retransmit alg.). - * Recompute the initial retransmit timer. - */ - if (tp->t_rtt && SEQ_GT(ti->ti_ack, tp->t_rtseq)) - tcp_xmit_timer(tp,tp->t_rtt); - - /* - * If all outstanding data is acked, stop retransmit - * timer and remember to restart (more output or persist). - * If there is more data to be acked, restart retransmit - * timer, using current (possibly backed-off) value. - */ - if (ti->ti_ack == tp->snd_max) { - tp->t_timer[TCPT_REXMT] = 0; - needoutput = 1; - } else if (tp->t_timer[TCPT_PERSIST] == 0) - tp->t_timer[TCPT_REXMT] = tp->t_rxtcur; - /* - * When new data is acked, open the congestion window. - * If the window gives us less than ssthresh packets - * in flight, open exponentially (maxseg per packet). - * Otherwise open linearly: maxseg per window - * (maxseg^2 / cwnd per packet). - */ - { - register unsigned cw = tp->snd_cwnd; - register unsigned incr = tp->t_maxseg; - - if (cw > tp->snd_ssthresh) - incr = incr * incr / cw; - tp->snd_cwnd = MIN(cw + incr, TCP_MAXWIN << tp->snd_scale); - } - if (acked > so->so_snd.sb_cc) { - tp->snd_wnd -= so->so_snd.sb_cc; - sodrop(so, (int)so->so_snd.sb_cc); - ourfinisacked = 1; - } else { - sodrop(so, acked); - tp->snd_wnd -= acked; - ourfinisacked = 0; - } - tp->snd_una = ti->ti_ack; - if (SEQ_LT(tp->snd_nxt, tp->snd_una)) - tp->snd_nxt = tp->snd_una; - - switch (tp->t_state) { - - /* - * In FIN_WAIT_1 STATE in addition to the processing - * for the ESTABLISHED state if our FIN is now acknowledged - * then enter FIN_WAIT_2. - */ - case TCPS_FIN_WAIT_1: - if (ourfinisacked) { - /* - * If we can't receive any more - * data, then closing user can proceed. - * Starting the timer is contrary to the - * specification, but if we don't get a FIN - * we'll hang forever. - */ - if (so->so_state & SS_FCANTRCVMORE) { - tp->t_timer[TCPT_2MSL] = TCP_MAXIDLE; - } - tp->t_state = TCPS_FIN_WAIT_2; - } - break; - - /* - * In CLOSING STATE in addition to the processing for - * the ESTABLISHED state if the ACK acknowledges our FIN - * then enter the TIME-WAIT state, otherwise ignore - * the segment. - */ - case TCPS_CLOSING: - if (ourfinisacked) { - tp->t_state = TCPS_TIME_WAIT; - tcp_canceltimers(tp); - tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL; - } - break; - - /* - * In LAST_ACK, we may still be waiting for data to drain - * and/or to be acked, as well as for the ack of our FIN. - * If our FIN is now acknowledged, delete the TCB, - * enter the closed state and return. - */ - case TCPS_LAST_ACK: - if (ourfinisacked) { - tcp_close(tp); - goto drop; - } - break; - - /* - * In TIME_WAIT state the only thing that should arrive - * is a retransmission of the remote FIN. Acknowledge - * it and restart the finack timer. - */ - case TCPS_TIME_WAIT: - tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL; - goto dropafterack; - } - } /* switch(tp->t_state) */ - -step6: - /* - * Update window information. - * Don't look at window if no ACK: TAC's send garbage on first SYN. - */ - if ((tiflags & TH_ACK) && - (SEQ_LT(tp->snd_wl1, ti->ti_seq) || - (tp->snd_wl1 == ti->ti_seq && (SEQ_LT(tp->snd_wl2, ti->ti_ack) || - (tp->snd_wl2 == ti->ti_ack && tiwin > tp->snd_wnd))))) { - tp->snd_wnd = tiwin; - tp->snd_wl1 = ti->ti_seq; - tp->snd_wl2 = ti->ti_ack; - if (tp->snd_wnd > tp->max_sndwnd) - tp->max_sndwnd = tp->snd_wnd; - needoutput = 1; - } - - /* - * Process segments with URG. - */ - if ((tiflags & TH_URG) && ti->ti_urp && - TCPS_HAVERCVDFIN(tp->t_state) == 0) { - /* - * This is a kludge, but if we receive and accept - * random urgent pointers, we'll crash in - * soreceive. It's hard to imagine someone - * actually wanting to send this much urgent data. - */ - if (ti->ti_urp + so->so_rcv.sb_cc > so->so_rcv.sb_datalen) { - ti->ti_urp = 0; - tiflags &= ~TH_URG; - goto dodata; - } - /* - * If this segment advances the known urgent pointer, - * then mark the data stream. This should not happen - * in CLOSE_WAIT, CLOSING, LAST_ACK or TIME_WAIT STATES since - * a FIN has been received from the remote side. - * In these states we ignore the URG. - * - * According to RFC961 (Assigned Protocols), - * the urgent pointer points to the last octet - * of urgent data. We continue, however, - * to consider it to indicate the first octet - * of data past the urgent section as the original - * spec states (in one of two places). - */ - if (SEQ_GT(ti->ti_seq+ti->ti_urp, tp->rcv_up)) { - tp->rcv_up = ti->ti_seq + ti->ti_urp; - so->so_urgc = so->so_rcv.sb_cc + - (tp->rcv_up - tp->rcv_nxt); /* -1; */ - tp->rcv_up = ti->ti_seq + ti->ti_urp; - - } - } else - /* - * If no out of band data is expected, - * pull receive urgent pointer along - * with the receive window. - */ - if (SEQ_GT(tp->rcv_nxt, tp->rcv_up)) - tp->rcv_up = tp->rcv_nxt; -dodata: - - /* - * If this is a small packet, then ACK now - with Nagel - * congestion avoidance sender won't send more until - * he gets an ACK. - */ - if (ti->ti_len && (unsigned)ti->ti_len <= 5 && - ((struct tcpiphdr_2 *)ti)->first_char == (char)27) { - tp->t_flags |= TF_ACKNOW; - } - - /* - * Process the segment text, merging it into the TCP sequencing queue, - * and arranging for acknowledgment of receipt if necessary. - * This process logically involves adjusting tp->rcv_wnd as data - * is presented to the user (this happens in tcp_usrreq.c, - * case PRU_RCVD). If a FIN has already been received on this - * connection then we just ignore the text. - */ - if ((ti->ti_len || (tiflags&TH_FIN)) && - TCPS_HAVERCVDFIN(tp->t_state) == 0) { - TCP_REASS(tp, ti, m, so, tiflags); - } else { - m_free(m); - tiflags &= ~TH_FIN; - } - - /* - * If FIN is received ACK the FIN and let the user know - * that the connection is closing. - */ - if (tiflags & TH_FIN) { - if (TCPS_HAVERCVDFIN(tp->t_state) == 0) { - /* - * If we receive a FIN we can't send more data, - * set it SS_FDRAIN - * Shutdown the socket if there is no rx data in the - * buffer. - * soread() is called on completion of shutdown() and - * will got to TCPS_LAST_ACK, and use tcp_output() - * to send the FIN. - */ - sofwdrain(so); - - tp->t_flags |= TF_ACKNOW; - tp->rcv_nxt++; - } - switch (tp->t_state) { - - /* - * In SYN_RECEIVED and ESTABLISHED STATES - * enter the CLOSE_WAIT state. - */ - case TCPS_SYN_RECEIVED: - case TCPS_ESTABLISHED: - if(so->so_emu == EMU_CTL) /* no shutdown on socket */ - tp->t_state = TCPS_LAST_ACK; - else - tp->t_state = TCPS_CLOSE_WAIT; - break; - - /* - * If still in FIN_WAIT_1 STATE FIN has not been acked so - * enter the CLOSING state. - */ - case TCPS_FIN_WAIT_1: - tp->t_state = TCPS_CLOSING; - break; - - /* - * In FIN_WAIT_2 state enter the TIME_WAIT state, - * starting the time-wait timer, turning off the other - * standard timers. - */ - case TCPS_FIN_WAIT_2: - tp->t_state = TCPS_TIME_WAIT; - tcp_canceltimers(tp); - tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL; - break; - - /* - * In TIME_WAIT state restart the 2 MSL time_wait timer. - */ - case TCPS_TIME_WAIT: - tp->t_timer[TCPT_2MSL] = 2 * TCPTV_MSL; - break; - } - } - - /* - * Return any desired output. - */ - if (needoutput || (tp->t_flags & TF_ACKNOW)) { - (void) tcp_output(tp); - } - return; - -dropafterack: - /* - * Generate an ACK dropping incoming segment if it occupies - * sequence space, where the ACK reflects our state. - */ - if (tiflags & TH_RST) - goto drop; - m_free(m); - tp->t_flags |= TF_ACKNOW; - (void) tcp_output(tp); - return; - -dropwithreset: - /* reuses m if m!=NULL, m_free() unnecessary */ - if (tiflags & TH_ACK) - tcp_respond(tp, ti, m, (tcp_seq)0, ti->ti_ack, TH_RST, af); - else { - if (tiflags & TH_SYN) ti->ti_len++; - tcp_respond(tp, ti, m, ti->ti_seq + ti->ti_len, (tcp_seq) 0, - TH_RST | TH_ACK, af); - } - - return; - -drop: - /* - * Drop space held by incoming segment and return. - */ - m_free(m); -} - -static void -tcp_dooptions(struct tcpcb *tp, uint8_t *cp, int cnt, struct tcpiphdr *ti) -{ - uint16_t mss; - int opt, optlen; - - DEBUG_CALL("tcp_dooptions"); - DEBUG_ARG("tp = %p cnt=%i", tp, cnt); - - for (; cnt > 0; cnt -= optlen, cp += optlen) { - opt = cp[0]; - if (opt == TCPOPT_EOL) - break; - if (opt == TCPOPT_NOP) - optlen = 1; - else { - optlen = cp[1]; - if (optlen <= 0) - break; - } - switch (opt) { - - default: - continue; - - case TCPOPT_MAXSEG: - if (optlen != TCPOLEN_MAXSEG) - continue; - if (!(ti->ti_flags & TH_SYN)) - continue; - memcpy((char *) &mss, (char *) cp + 2, sizeof(mss)); - NTOHS(mss); - (void) tcp_mss(tp, mss); /* sets t_maxseg */ - break; - } - } -} - -/* - * Collect new round-trip time estimate - * and update averages and current timeout. - */ - -static void -tcp_xmit_timer(register struct tcpcb *tp, int rtt) -{ - register short delta; - - DEBUG_CALL("tcp_xmit_timer"); - DEBUG_ARG("tp = %p", tp); - DEBUG_ARG("rtt = %d", rtt); - - if (tp->t_srtt != 0) { - /* - * srtt is stored as fixed point with 3 bits after the - * binary point (i.e., scaled by 8). The following magic - * is equivalent to the smoothing algorithm in rfc793 with - * an alpha of .875 (srtt = rtt/8 + srtt*7/8 in fixed - * point). Adjust rtt to origin 0. - */ - delta = rtt - 1 - (tp->t_srtt >> TCP_RTT_SHIFT); - if ((tp->t_srtt += delta) <= 0) - tp->t_srtt = 1; - /* - * We accumulate a smoothed rtt variance (actually, a - * smoothed mean difference), then set the retransmit - * timer to smoothed rtt + 4 times the smoothed variance. - * rttvar is stored as fixed point with 2 bits after the - * binary point (scaled by 4). The following is - * equivalent to rfc793 smoothing with an alpha of .75 - * (rttvar = rttvar*3/4 + |delta| / 4). This replaces - * rfc793's wired-in beta. - */ - if (delta < 0) - delta = -delta; - delta -= (tp->t_rttvar >> TCP_RTTVAR_SHIFT); - if ((tp->t_rttvar += delta) <= 0) - tp->t_rttvar = 1; - } else { - /* - * No rtt measurement yet - use the unsmoothed rtt. - * Set the variance to half the rtt (so our first - * retransmit happens at 3*rtt). - */ - tp->t_srtt = rtt << TCP_RTT_SHIFT; - tp->t_rttvar = rtt << (TCP_RTTVAR_SHIFT - 1); - } - tp->t_rtt = 0; - tp->t_rxtshift = 0; - - /* - * the retransmit should happen at rtt + 4 * rttvar. - * Because of the way we do the smoothing, srtt and rttvar - * will each average +1/2 tick of bias. When we compute - * the retransmit timer, we want 1/2 tick of rounding and - * 1 extra tick because of +-1/2 tick uncertainty in the - * firing of the timer. The bias will give us exactly the - * 1.5 tick we need. But, because the bias is - * statistical, we have to test that we don't drop below - * the minimum feasible timer (which is 2 ticks). - */ - TCPT_RANGESET(tp->t_rxtcur, TCP_REXMTVAL(tp), - (short)tp->t_rttmin, TCPTV_REXMTMAX); /* XXX */ - - /* - * We received an ack for a packet that wasn't retransmitted; - * it is probably safe to discard any error indications we've - * received recently. This isn't quite right, but close enough - * for now (a route might have failed after we sent a segment, - * and the return path might not be symmetrical). - */ - tp->t_softerror = 0; -} - -/* - * Determine a reasonable value for maxseg size. - * If the route is known, check route for mtu. - * If none, use an mss that can be handled on the outgoing - * interface without forcing IP to fragment; if bigger than - * an mbuf cluster (MCLBYTES), round down to nearest multiple of MCLBYTES - * to utilize large mbufs. If no route is found, route has no mtu, - * or the destination isn't local, use a default, hopefully conservative - * size (usually 512 or the default IP max size, but no more than the mtu - * of the interface), as we can't discover anything about intervening - * gateways or networks. We also initialize the congestion/slow start - * window to be a single segment if the destination isn't local. - * While looking at the routing entry, we also initialize other path-dependent - * parameters from pre-set or cached values in the routing entry. - */ - -int -tcp_mss(struct tcpcb *tp, unsigned offer) -{ - struct socket *so = tp->t_socket; - int mss; - - DEBUG_CALL("tcp_mss"); - DEBUG_ARG("tp = %p", tp); - DEBUG_ARG("offer = %d", offer); - - switch (so->so_ffamily) { - case AF_INET: - mss = MIN(IF_MTU, IF_MRU) - sizeof(struct tcphdr) - - sizeof(struct ip); - break; - case AF_INET6: - mss = MIN(IF_MTU, IF_MRU) - sizeof(struct tcphdr) - - sizeof(struct ip6); - break; - default: - g_assert_not_reached(); - } - - if (offer) - mss = MIN(mss, offer); - mss = MAX(mss, 32); - if (mss < tp->t_maxseg || offer != 0) - tp->t_maxseg = mss; - - tp->snd_cwnd = mss; - - sbreserve(&so->so_snd, TCP_SNDSPACE + ((TCP_SNDSPACE % mss) ? - (mss - (TCP_SNDSPACE % mss)) : - 0)); - sbreserve(&so->so_rcv, TCP_RCVSPACE + ((TCP_RCVSPACE % mss) ? - (mss - (TCP_RCVSPACE % mss)) : - 0)); - - DEBUG_MISC(" returning mss = %d", mss); - - return mss; -} diff --git a/slirp/src/tcp_output.c b/slirp/src/tcp_output.c deleted file mode 100644 index 6bbaf6ca6f..0000000000 --- a/slirp/src/tcp_output.c +++ /dev/null @@ -1,522 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1988, 1990, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)tcp_output.c 8.3 (Berkeley) 12/30/93 - * tcp_output.c,v 1.3 1994/09/15 10:36:55 davidg Exp - */ - -/* - * Changes and additions relating to SLiRP - * Copyright (c) 1995 Danny Gasparovski. - */ - -#include "slirp.h" - -static const uint8_t tcp_outflags[TCP_NSTATES] = { - TH_RST|TH_ACK, 0, TH_SYN, TH_SYN|TH_ACK, - TH_ACK, TH_ACK, TH_FIN|TH_ACK, TH_FIN|TH_ACK, - TH_FIN|TH_ACK, TH_ACK, TH_ACK, -}; - - -#undef MAX_TCPOPTLEN -#define MAX_TCPOPTLEN 32 /* max # bytes that go in options */ - -/* - * Tcp output routine: figure out what should be sent and send it. - */ -int -tcp_output(struct tcpcb *tp) -{ - register struct socket *so = tp->t_socket; - register long len, win; - int off, flags, error; - register struct mbuf *m; - register struct tcpiphdr *ti, tcpiph_save; - struct ip *ip; - struct ip6 *ip6; - uint8_t opt[MAX_TCPOPTLEN]; - unsigned optlen, hdrlen; - int idle, sendalot; - - DEBUG_CALL("tcp_output"); - DEBUG_ARG("tp = %p", tp); - - /* - * Determine length of data that should be transmitted, - * and flags that will be used. - * If there is some data or critical controls (SYN, RST) - * to send, then transmit; otherwise, investigate further. - */ - idle = (tp->snd_max == tp->snd_una); - if (idle && tp->t_idle >= tp->t_rxtcur) - /* - * We have been idle for "a while" and no acks are - * expected to clock out any data we send -- - * slow start to get ack "clock" running again. - */ - tp->snd_cwnd = tp->t_maxseg; -again: - sendalot = 0; - off = tp->snd_nxt - tp->snd_una; - win = MIN(tp->snd_wnd, tp->snd_cwnd); - - flags = tcp_outflags[tp->t_state]; - - DEBUG_MISC(" --- tcp_output flags = 0x%x", flags); - - /* - * If in persist timeout with window of 0, send 1 byte. - * Otherwise, if window is small but nonzero - * and timer expired, we will send what we can - * and go to transmit state. - */ - if (tp->t_force) { - if (win == 0) { - /* - * If we still have some data to send, then - * clear the FIN bit. Usually this would - * happen below when it realizes that we - * aren't sending all the data. However, - * if we have exactly 1 byte of unset data, - * then it won't clear the FIN bit below, - * and if we are in persist state, we wind - * up sending the packet without recording - * that we sent the FIN bit. - * - * We can't just blindly clear the FIN bit, - * because if we don't have any more data - * to send then the probe will be the FIN - * itself. - */ - if (off < so->so_snd.sb_cc) - flags &= ~TH_FIN; - win = 1; - } else { - tp->t_timer[TCPT_PERSIST] = 0; - tp->t_rxtshift = 0; - } - } - - len = MIN(so->so_snd.sb_cc, win) - off; - - if (len < 0) { - /* - * If FIN has been sent but not acked, - * but we haven't been called to retransmit, - * len will be -1. Otherwise, window shrank - * after we sent into it. If window shrank to 0, - * cancel pending retransmit and pull snd_nxt - * back to (closed) window. We will enter persist - * state below. If the window didn't close completely, - * just wait for an ACK. - */ - len = 0; - if (win == 0) { - tp->t_timer[TCPT_REXMT] = 0; - tp->snd_nxt = tp->snd_una; - } - } - - if (len > tp->t_maxseg) { - len = tp->t_maxseg; - sendalot = 1; - } - if (SEQ_LT(tp->snd_nxt + len, tp->snd_una + so->so_snd.sb_cc)) - flags &= ~TH_FIN; - - win = sbspace(&so->so_rcv); - - /* - * Sender silly window avoidance. If connection is idle - * and can send all data, a maximum segment, - * at least a maximum default-size segment do it, - * or are forced, do it; otherwise don't bother. - * If peer's buffer is tiny, then send - * when window is at least half open. - * If retransmitting (possibly after persist timer forced us - * to send into a small window), then must resend. - */ - if (len) { - if (len == tp->t_maxseg) - goto send; - if ((1 || idle || tp->t_flags & TF_NODELAY) && - len + off >= so->so_snd.sb_cc) - goto send; - if (tp->t_force) - goto send; - if (len >= tp->max_sndwnd / 2 && tp->max_sndwnd > 0) - goto send; - if (SEQ_LT(tp->snd_nxt, tp->snd_max)) - goto send; - } - - /* - * Compare available window to amount of window - * known to peer (as advertised window less - * next expected input). If the difference is at least two - * max size segments, or at least 50% of the maximum possible - * window, then want to send a window update to peer. - */ - if (win > 0) { - /* - * "adv" is the amount we can increase the window, - * taking into account that we are limited by - * TCP_MAXWIN << tp->rcv_scale. - */ - long adv = MIN(win, (long)TCP_MAXWIN << tp->rcv_scale) - - (tp->rcv_adv - tp->rcv_nxt); - - if (adv >= (long) (2 * tp->t_maxseg)) - goto send; - if (2 * adv >= (long) so->so_rcv.sb_datalen) - goto send; - } - - /* - * Send if we owe peer an ACK. - */ - if (tp->t_flags & TF_ACKNOW) - goto send; - if (flags & (TH_SYN|TH_RST)) - goto send; - if (SEQ_GT(tp->snd_up, tp->snd_una)) - goto send; - /* - * If our state indicates that FIN should be sent - * and we have not yet done so, or we're retransmitting the FIN, - * then we need to send. - */ - if (flags & TH_FIN && - ((tp->t_flags & TF_SENTFIN) == 0 || tp->snd_nxt == tp->snd_una)) - goto send; - - /* - * TCP window updates are not reliable, rather a polling protocol - * using ``persist'' packets is used to insure receipt of window - * updates. The three ``states'' for the output side are: - * idle not doing retransmits or persists - * persisting to move a small or zero window - * (re)transmitting and thereby not persisting - * - * tp->t_timer[TCPT_PERSIST] - * is set when we are in persist state. - * tp->t_force - * is set when we are called to send a persist packet. - * tp->t_timer[TCPT_REXMT] - * is set when we are retransmitting - * The output side is idle when both timers are zero. - * - * If send window is too small, there is data to transmit, and no - * retransmit or persist is pending, then go to persist state. - * If nothing happens soon, send when timer expires: - * if window is nonzero, transmit what we can, - * otherwise force out a byte. - */ - if (so->so_snd.sb_cc && tp->t_timer[TCPT_REXMT] == 0 && - tp->t_timer[TCPT_PERSIST] == 0) { - tp->t_rxtshift = 0; - tcp_setpersist(tp); - } - - /* - * No reason to send a segment, just return. - */ - return (0); - -send: - /* - * Before ESTABLISHED, force sending of initial options - * unless TCP set not to do any options. - * NOTE: we assume that the IP/TCP header plus TCP options - * always fit in a single mbuf, leaving room for a maximum - * link header, i.e. - * max_linkhdr + sizeof (struct tcpiphdr) + optlen <= MHLEN - */ - optlen = 0; - hdrlen = sizeof (struct tcpiphdr); - if (flags & TH_SYN) { - tp->snd_nxt = tp->iss; - if ((tp->t_flags & TF_NOOPT) == 0) { - uint16_t mss; - - opt[0] = TCPOPT_MAXSEG; - opt[1] = 4; - mss = htons((uint16_t) tcp_mss(tp, 0)); - memcpy((char *)(opt + 2), (char *)&mss, sizeof(mss)); - optlen = 4; - } - } - - hdrlen += optlen; - - /* - * Adjust data length if insertion of options will - * bump the packet length beyond the t_maxseg length. - */ - if (len > tp->t_maxseg - optlen) { - len = tp->t_maxseg - optlen; - sendalot = 1; - } - - /* - * Grab a header mbuf, attaching a copy of data to - * be transmitted, and initialize the header from - * the template for sends on this connection. - */ - if (len) { - m = m_get(so->slirp); - if (m == NULL) { - error = 1; - goto out; - } - m->m_data += IF_MAXLINKHDR; - m->m_len = hdrlen; - - sbcopy(&so->so_snd, off, (int) len, mtod(m, char *) + hdrlen); - m->m_len += len; - - /* - * If we're sending everything we've got, set PUSH. - * (This will keep happy those implementations which only - * give data to the user when a buffer fills or - * a PUSH comes in.) - */ - if (off + len == so->so_snd.sb_cc) - flags |= TH_PUSH; - } else { - m = m_get(so->slirp); - if (m == NULL) { - error = 1; - goto out; - } - m->m_data += IF_MAXLINKHDR; - m->m_len = hdrlen; - } - - ti = mtod(m, struct tcpiphdr *); - - memcpy((char *)ti, &tp->t_template, sizeof (struct tcpiphdr)); - - /* - * Fill in fields, remembering maximum advertised - * window for use in delaying messages about window sizes. - * If resending a FIN, be sure not to use a new sequence number. - */ - if (flags & TH_FIN && tp->t_flags & TF_SENTFIN && - tp->snd_nxt == tp->snd_max) - tp->snd_nxt--; - /* - * If we are doing retransmissions, then snd_nxt will - * not reflect the first unsent octet. For ACK only - * packets, we do not want the sequence number of the - * retransmitted packet, we want the sequence number - * of the next unsent octet. So, if there is no data - * (and no SYN or FIN), use snd_max instead of snd_nxt - * when filling in ti_seq. But if we are in persist - * state, snd_max might reflect one byte beyond the - * right edge of the window, so use snd_nxt in that - * case, since we know we aren't doing a retransmission. - * (retransmit and persist are mutually exclusive...) - */ - if (len || (flags & (TH_SYN|TH_FIN)) || tp->t_timer[TCPT_PERSIST]) - ti->ti_seq = htonl(tp->snd_nxt); - else - ti->ti_seq = htonl(tp->snd_max); - ti->ti_ack = htonl(tp->rcv_nxt); - if (optlen) { - memcpy((char *)(ti + 1), (char *)opt, optlen); - ti->ti_off = (sizeof (struct tcphdr) + optlen) >> 2; - } - ti->ti_flags = flags; - /* - * Calculate receive window. Don't shrink window, - * but avoid silly window syndrome. - */ - if (win < (long)(so->so_rcv.sb_datalen / 4) && win < (long)tp->t_maxseg) - win = 0; - if (win > (long)TCP_MAXWIN << tp->rcv_scale) - win = (long)TCP_MAXWIN << tp->rcv_scale; - if (win < (long)(tp->rcv_adv - tp->rcv_nxt)) - win = (long)(tp->rcv_adv - tp->rcv_nxt); - ti->ti_win = htons((uint16_t) (win>>tp->rcv_scale)); - - if (SEQ_GT(tp->snd_up, tp->snd_una)) { - ti->ti_urp = htons((uint16_t)(tp->snd_up - ntohl(ti->ti_seq))); - ti->ti_flags |= TH_URG; - } else - /* - * If no urgent pointer to send, then we pull - * the urgent pointer to the left edge of the send window - * so that it doesn't drift into the send window on sequence - * number wraparound. - */ - tp->snd_up = tp->snd_una; /* drag it along */ - - /* - * Put TCP length in extended header, and then - * checksum extended header and data. - */ - if (len + optlen) - ti->ti_len = htons((uint16_t)(sizeof (struct tcphdr) + - optlen + len)); - ti->ti_sum = cksum(m, (int)(hdrlen + len)); - - /* - * In transmit state, time the transmission and arrange for - * the retransmit. In persist state, just set snd_max. - */ - if (tp->t_force == 0 || tp->t_timer[TCPT_PERSIST] == 0) { - tcp_seq startseq = tp->snd_nxt; - - /* - * Advance snd_nxt over sequence space of this segment. - */ - if (flags & (TH_SYN|TH_FIN)) { - if (flags & TH_SYN) - tp->snd_nxt++; - if (flags & TH_FIN) { - tp->snd_nxt++; - tp->t_flags |= TF_SENTFIN; - } - } - tp->snd_nxt += len; - if (SEQ_GT(tp->snd_nxt, tp->snd_max)) { - tp->snd_max = tp->snd_nxt; - /* - * Time this transmission if not a retransmission and - * not currently timing anything. - */ - if (tp->t_rtt == 0) { - tp->t_rtt = 1; - tp->t_rtseq = startseq; - } - } - - /* - * Set retransmit timer if not currently set, - * and not doing an ack or a keep-alive probe. - * Initial value for retransmit timer is smoothed - * round-trip time + 2 * round-trip time variance. - * Initialize shift counter which is used for backoff - * of retransmit time. - */ - if (tp->t_timer[TCPT_REXMT] == 0 && - tp->snd_nxt != tp->snd_una) { - tp->t_timer[TCPT_REXMT] = tp->t_rxtcur; - if (tp->t_timer[TCPT_PERSIST]) { - tp->t_timer[TCPT_PERSIST] = 0; - tp->t_rxtshift = 0; - } - } - } else - if (SEQ_GT(tp->snd_nxt + len, tp->snd_max)) - tp->snd_max = tp->snd_nxt + len; - - /* - * Fill in IP length and desired time to live and - * send to IP level. There should be a better way - * to handle ttl and tos; we could keep them in - * the template, but need a way to checksum without them. - */ - m->m_len = hdrlen + len; /* XXX Needed? m_len should be correct */ - tcpiph_save = *mtod(m, struct tcpiphdr *); - - switch (so->so_ffamily) { - case AF_INET: - m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr) - - sizeof(struct ip); - m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr) - - sizeof(struct ip); - ip = mtod(m, struct ip *); - - ip->ip_len = m->m_len; - ip->ip_dst = tcpiph_save.ti_dst; - ip->ip_src = tcpiph_save.ti_src; - ip->ip_p = tcpiph_save.ti_pr; - - ip->ip_ttl = IPDEFTTL; - ip->ip_tos = so->so_iptos; - error = ip_output(so, m); - break; - - case AF_INET6: - m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr) - - sizeof(struct ip6); - m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr) - - sizeof(struct ip6); - ip6 = mtod(m, struct ip6 *); - - ip6->ip_pl = tcpiph_save.ti_len; - ip6->ip_dst = tcpiph_save.ti_dst6; - ip6->ip_src = tcpiph_save.ti_src6; - ip6->ip_nh = tcpiph_save.ti_nh6; - - error = ip6_output(so, m, 0); - break; - - default: - g_assert_not_reached(); - } - - if (error) { -out: - return (error); - } - - /* - * Data sent (as far as we can tell). - * If this advertises a larger window than any other segment, - * then remember the size of the advertised window. - * Any pending ACK has now been sent. - */ - if (win > 0 && SEQ_GT(tp->rcv_nxt+win, tp->rcv_adv)) - tp->rcv_adv = tp->rcv_nxt + win; - tp->last_ack_sent = tp->rcv_nxt; - tp->t_flags &= ~(TF_ACKNOW|TF_DELACK); - if (sendalot) - goto again; - - return (0); -} - -void -tcp_setpersist(struct tcpcb *tp) -{ - int t = ((tp->t_srtt >> 2) + tp->t_rttvar) >> 1; - - /* - * Start/restart persistence timer. - */ - TCPT_RANGESET(tp->t_timer[TCPT_PERSIST], - t * tcp_backoff[tp->t_rxtshift], - TCPTV_PERSMIN, TCPTV_PERSMAX); - if (tp->t_rxtshift < TCP_MAXRXTSHIFT) - tp->t_rxtshift++; -} diff --git a/slirp/src/tcp_subr.c b/slirp/src/tcp_subr.c deleted file mode 100644 index fde9207b0c..0000000000 --- a/slirp/src/tcp_subr.c +++ /dev/null @@ -1,987 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1988, 1990, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)tcp_subr.c 8.1 (Berkeley) 6/10/93 - * tcp_subr.c,v 1.5 1994/10/08 22:39:58 phk Exp - */ - -/* - * Changes and additions relating to SLiRP - * Copyright (c) 1995 Danny Gasparovski. - */ - -#include "slirp.h" - -/* patchable/settable parameters for tcp */ -/* Don't do rfc1323 performance enhancements */ -#define TCP_DO_RFC1323 0 - -/* - * Tcp initialization - */ -void -tcp_init(Slirp *slirp) -{ - slirp->tcp_iss = 1; /* wrong */ - slirp->tcb.so_next = slirp->tcb.so_prev = &slirp->tcb; - slirp->tcp_last_so = &slirp->tcb; -} - -void tcp_cleanup(Slirp *slirp) -{ - while (slirp->tcb.so_next != &slirp->tcb) { - tcp_close(sototcpcb(slirp->tcb.so_next)); - } -} - -/* - * Create template to be used to send tcp packets on a connection. - * Call after host entry created, fills - * in a skeletal tcp/ip header, minimizing the amount of work - * necessary when the connection is used. - */ -void -tcp_template(struct tcpcb *tp) -{ - struct socket *so = tp->t_socket; - register struct tcpiphdr *n = &tp->t_template; - - n->ti_mbuf = NULL; - memset(&n->ti, 0, sizeof(n->ti)); - n->ti_x0 = 0; - switch (so->so_ffamily) { - case AF_INET: - n->ti_pr = IPPROTO_TCP; - n->ti_len = htons(sizeof(struct tcphdr)); - n->ti_src = so->so_faddr; - n->ti_dst = so->so_laddr; - n->ti_sport = so->so_fport; - n->ti_dport = so->so_lport; - break; - - case AF_INET6: - n->ti_nh6 = IPPROTO_TCP; - n->ti_len = htons(sizeof(struct tcphdr)); - n->ti_src6 = so->so_faddr6; - n->ti_dst6 = so->so_laddr6; - n->ti_sport = so->so_fport6; - n->ti_dport = so->so_lport6; - break; - - default: - g_assert_not_reached(); - } - - n->ti_seq = 0; - n->ti_ack = 0; - n->ti_x2 = 0; - n->ti_off = 5; - n->ti_flags = 0; - n->ti_win = 0; - n->ti_sum = 0; - n->ti_urp = 0; -} - -/* - * Send a single message to the TCP at address specified by - * the given TCP/IP header. If m == 0, then we make a copy - * of the tcpiphdr at ti and send directly to the addressed host. - * This is used to force keep alive messages out using the TCP - * template for a connection tp->t_template. If flags are given - * then we send a message back to the TCP which originated the - * segment ti, and discard the mbuf containing it and any other - * attached mbufs. - * - * In any case the ack and sequence number of the transmitted - * segment are as specified by the parameters. - */ -void -tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m, - tcp_seq ack, tcp_seq seq, int flags, unsigned short af) -{ - register int tlen; - int win = 0; - - DEBUG_CALL("tcp_respond"); - DEBUG_ARG("tp = %p", tp); - DEBUG_ARG("ti = %p", ti); - DEBUG_ARG("m = %p", m); - DEBUG_ARG("ack = %u", ack); - DEBUG_ARG("seq = %u", seq); - DEBUG_ARG("flags = %x", flags); - - if (tp) - win = sbspace(&tp->t_socket->so_rcv); - if (m == NULL) { - if (!tp || (m = m_get(tp->t_socket->slirp)) == NULL) - return; - tlen = 0; - m->m_data += IF_MAXLINKHDR; - *mtod(m, struct tcpiphdr *) = *ti; - ti = mtod(m, struct tcpiphdr *); - switch (af) { - case AF_INET: - ti->ti.ti_i4.ih_x1 = 0; - break; - case AF_INET6: - ti->ti.ti_i6.ih_x1 = 0; - break; - default: - g_assert_not_reached(); - } - flags = TH_ACK; - } else { - /* - * ti points into m so the next line is just making - * the mbuf point to ti - */ - m->m_data = (char *)ti; - - m->m_len = sizeof (struct tcpiphdr); - tlen = 0; -#define xchg(a,b,type) { type t; t=a; a=b; b=t; } - switch (af) { - case AF_INET: - xchg(ti->ti_dst.s_addr, ti->ti_src.s_addr, uint32_t); - xchg(ti->ti_dport, ti->ti_sport, uint16_t); - break; - case AF_INET6: - xchg(ti->ti_dst6, ti->ti_src6, struct in6_addr); - xchg(ti->ti_dport, ti->ti_sport, uint16_t); - break; - default: - g_assert_not_reached(); - } -#undef xchg - } - ti->ti_len = htons((uint16_t)(sizeof (struct tcphdr) + tlen)); - tlen += sizeof (struct tcpiphdr); - m->m_len = tlen; - - ti->ti_mbuf = NULL; - ti->ti_x0 = 0; - ti->ti_seq = htonl(seq); - ti->ti_ack = htonl(ack); - ti->ti_x2 = 0; - ti->ti_off = sizeof (struct tcphdr) >> 2; - ti->ti_flags = flags; - if (tp) - ti->ti_win = htons((uint16_t) (win >> tp->rcv_scale)); - else - ti->ti_win = htons((uint16_t)win); - ti->ti_urp = 0; - ti->ti_sum = 0; - ti->ti_sum = cksum(m, tlen); - - struct tcpiphdr tcpiph_save = *(mtod(m, struct tcpiphdr *)); - struct ip *ip; - struct ip6 *ip6; - - switch (af) { - case AF_INET: - m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr) - - sizeof(struct ip); - m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr) - - sizeof(struct ip); - ip = mtod(m, struct ip *); - ip->ip_len = m->m_len; - ip->ip_dst = tcpiph_save.ti_dst; - ip->ip_src = tcpiph_save.ti_src; - ip->ip_p = tcpiph_save.ti_pr; - - if (flags & TH_RST) { - ip->ip_ttl = MAXTTL; - } else { - ip->ip_ttl = IPDEFTTL; - } - - ip_output(NULL, m); - break; - - case AF_INET6: - m->m_data += sizeof(struct tcpiphdr) - sizeof(struct tcphdr) - - sizeof(struct ip6); - m->m_len -= sizeof(struct tcpiphdr) - sizeof(struct tcphdr) - - sizeof(struct ip6); - ip6 = mtod(m, struct ip6 *); - ip6->ip_pl = tcpiph_save.ti_len; - ip6->ip_dst = tcpiph_save.ti_dst6; - ip6->ip_src = tcpiph_save.ti_src6; - ip6->ip_nh = tcpiph_save.ti_nh6; - - ip6_output(NULL, m, 0); - break; - - default: - g_assert_not_reached(); - } -} - -/* - * Create a new TCP control block, making an - * empty reassembly queue and hooking it to the argument - * protocol control block. - */ -struct tcpcb * -tcp_newtcpcb(struct socket *so) -{ - register struct tcpcb *tp; - - tp = (struct tcpcb *)malloc(sizeof(*tp)); - if (tp == NULL) - return ((struct tcpcb *)0); - - memset((char *) tp, 0, sizeof(struct tcpcb)); - tp->seg_next = tp->seg_prev = (struct tcpiphdr*)tp; - tp->t_maxseg = (so->so_ffamily == AF_INET) ? TCP_MSS : TCP6_MSS; - - tp->t_flags = TCP_DO_RFC1323 ? (TF_REQ_SCALE|TF_REQ_TSTMP) : 0; - tp->t_socket = so; - - /* - * Init srtt to TCPTV_SRTTBASE (0), so we can tell that we have no - * rtt estimate. Set rttvar so that srtt + 2 * rttvar gives - * reasonable initial retransmit time. - */ - tp->t_srtt = TCPTV_SRTTBASE; - tp->t_rttvar = TCPTV_SRTTDFLT << 2; - tp->t_rttmin = TCPTV_MIN; - - TCPT_RANGESET(tp->t_rxtcur, - ((TCPTV_SRTTBASE >> 2) + (TCPTV_SRTTDFLT << 2)) >> 1, - TCPTV_MIN, TCPTV_REXMTMAX); - - tp->snd_cwnd = TCP_MAXWIN << TCP_MAX_WINSHIFT; - tp->snd_ssthresh = TCP_MAXWIN << TCP_MAX_WINSHIFT; - tp->t_state = TCPS_CLOSED; - - so->so_tcpcb = tp; - - return (tp); -} - -/* - * Drop a TCP connection, reporting - * the specified error. If connection is synchronized, - * then send a RST to peer. - */ -struct tcpcb *tcp_drop(struct tcpcb *tp, int err) -{ - DEBUG_CALL("tcp_drop"); - DEBUG_ARG("tp = %p", tp); - DEBUG_ARG("errno = %d", errno); - - if (TCPS_HAVERCVDSYN(tp->t_state)) { - tp->t_state = TCPS_CLOSED; - (void) tcp_output(tp); - } - return (tcp_close(tp)); -} - -/* - * Close a TCP control block: - * discard all space held by the tcp - * discard internet protocol block - * wake up any sleepers - */ -struct tcpcb * -tcp_close(struct tcpcb *tp) -{ - register struct tcpiphdr *t; - struct socket *so = tp->t_socket; - Slirp *slirp = so->slirp; - register struct mbuf *m; - - DEBUG_CALL("tcp_close"); - DEBUG_ARG("tp = %p", tp); - - /* free the reassembly queue, if any */ - t = tcpfrag_list_first(tp); - while (!tcpfrag_list_end(t, tp)) { - t = tcpiphdr_next(t); - m = tcpiphdr_prev(t)->ti_mbuf; - remque(tcpiphdr2qlink(tcpiphdr_prev(t))); - m_free(m); - } - free(tp); - so->so_tcpcb = NULL; - /* clobber input socket cache if we're closing the cached connection */ - if (so == slirp->tcp_last_so) - slirp->tcp_last_so = &slirp->tcb; - so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque); - closesocket(so->s); - sbfree(&so->so_rcv); - sbfree(&so->so_snd); - sofree(so); - return ((struct tcpcb *)0); -} - -/* - * TCP protocol interface to socket abstraction. - */ - -/* - * User issued close, and wish to trail through shutdown states: - * if never received SYN, just forget it. If got a SYN from peer, - * but haven't sent FIN, then go to FIN_WAIT_1 state to send peer a FIN. - * If already got a FIN from peer, then almost done; go to LAST_ACK - * state. In all other cases, have already sent FIN to peer (e.g. - * after PRU_SHUTDOWN), and just have to play tedious game waiting - * for peer to send FIN or not respond to keep-alives, etc. - * We can let the user exit from the close as soon as the FIN is acked. - */ -void -tcp_sockclosed(struct tcpcb *tp) -{ - - DEBUG_CALL("tcp_sockclosed"); - DEBUG_ARG("tp = %p", tp); - - if (!tp) { - return; - } - - switch (tp->t_state) { - - case TCPS_CLOSED: - case TCPS_LISTEN: - case TCPS_SYN_SENT: - tp->t_state = TCPS_CLOSED; - tp = tcp_close(tp); - break; - - case TCPS_SYN_RECEIVED: - case TCPS_ESTABLISHED: - tp->t_state = TCPS_FIN_WAIT_1; - break; - - case TCPS_CLOSE_WAIT: - tp->t_state = TCPS_LAST_ACK; - break; - } - tcp_output(tp); -} - -/* - * Connect to a host on the Internet - * Called by tcp_input - * Only do a connect, the tcp fields will be set in tcp_input - * return 0 if there's a result of the connect, - * else return -1 means we're still connecting - * The return value is almost always -1 since the socket is - * nonblocking. Connect returns after the SYN is sent, and does - * not wait for ACK+SYN. - */ -int tcp_fconnect(struct socket *so, unsigned short af) -{ - int ret=0; - - DEBUG_CALL("tcp_fconnect"); - DEBUG_ARG("so = %p", so); - - ret = so->s = slirp_socket(af, SOCK_STREAM, 0); - if (ret >= 0) { - int opt, s=so->s; - struct sockaddr_storage addr; - - slirp_set_nonblock(s); - so->slirp->cb->register_poll_fd(so->s, so->slirp->opaque); - slirp_socket_set_fast_reuse(s); - opt = 1; - setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(opt)); - opt = 1; - setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt)); - - addr = so->fhost.ss; - DEBUG_CALL(" connect()ing"); - sotranslate_out(so, &addr); - - /* We don't care what port we get */ - ret = connect(s, (struct sockaddr *)&addr, sockaddr_size(&addr)); - - /* - * If it's not in progress, it failed, so we just return 0, - * without clearing SS_NOFDREF - */ - soisfconnecting(so); - } - - return(ret); -} - -/* - * Accept the socket and connect to the local-host - * - * We have a problem. The correct thing to do would be - * to first connect to the local-host, and only if the - * connection is accepted, then do an accept() here. - * But, a) we need to know who's trying to connect - * to the socket to be able to SYN the local-host, and - * b) we are already connected to the foreign host by - * the time it gets to accept(), so... We simply accept - * here and SYN the local-host. - */ -void tcp_connect(struct socket *inso) -{ - Slirp *slirp = inso->slirp; - struct socket *so; - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(struct sockaddr_storage); - struct tcpcb *tp; - int s, opt; - - DEBUG_CALL("tcp_connect"); - DEBUG_ARG("inso = %p", inso); - - /* - * If it's an SS_ACCEPTONCE socket, no need to socreate() - * another socket, just use the accept() socket. - */ - if (inso->so_state & SS_FACCEPTONCE) { - /* FACCEPTONCE already have a tcpcb */ - so = inso; - } else { - so = socreate(slirp); - if (tcp_attach(so) < 0) { - g_free(so); /* NOT sofree */ - return; - } - so->lhost = inso->lhost; - so->so_ffamily = inso->so_ffamily; - } - - tcp_mss(sototcpcb(so), 0); - - s = accept(inso->s, (struct sockaddr *)&addr, &addrlen); - if (s < 0) { - tcp_close(sototcpcb(so)); /* This will sofree() as well */ - return; - } - slirp_set_nonblock(s); - so->slirp->cb->register_poll_fd(so->s, so->slirp->opaque); - slirp_socket_set_fast_reuse(s); - opt = 1; - setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int)); - slirp_socket_set_nodelay(s); - - so->fhost.ss = addr; - sotranslate_accept(so); - - /* Close the accept() socket, set right state */ - if (inso->so_state & SS_FACCEPTONCE) { - /* If we only accept once, close the accept() socket */ - so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque); - closesocket(so->s); - - /* Don't select it yet, even though we have an FD */ - /* if it's not FACCEPTONCE, it's already NOFDREF */ - so->so_state = SS_NOFDREF; - } - so->s = s; - so->so_state |= SS_INCOMING; - - so->so_iptos = tcp_tos(so); - tp = sototcpcb(so); - - tcp_template(tp); - - tp->t_state = TCPS_SYN_SENT; - tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT; - tp->iss = slirp->tcp_iss; - slirp->tcp_iss += TCP_ISSINCR/2; - tcp_sendseqinit(tp); - tcp_output(tp); -} - -/* - * Attach a TCPCB to a socket. - */ -int -tcp_attach(struct socket *so) -{ - if ((so->so_tcpcb = tcp_newtcpcb(so)) == NULL) - return -1; - - insque(so, &so->slirp->tcb); - - return 0; -} - -/* - * Set the socket's type of service field - */ -static const struct tos_t tcptos[] = { - {0, 20, IPTOS_THROUGHPUT, 0}, /* ftp data */ - {21, 21, IPTOS_LOWDELAY, EMU_FTP}, /* ftp control */ - {0, 23, IPTOS_LOWDELAY, 0}, /* telnet */ - {0, 80, IPTOS_THROUGHPUT, 0}, /* WWW */ - {0, 513, IPTOS_LOWDELAY, EMU_RLOGIN|EMU_NOCONNECT}, /* rlogin */ - {0, 544, IPTOS_LOWDELAY, EMU_KSH}, /* kshell */ - {0, 543, IPTOS_LOWDELAY, 0}, /* klogin */ - {0, 6667, IPTOS_THROUGHPUT, EMU_IRC}, /* IRC */ - {0, 6668, IPTOS_THROUGHPUT, EMU_IRC}, /* IRC undernet */ - {0, 7070, IPTOS_LOWDELAY, EMU_REALAUDIO }, /* RealAudio control */ - {0, 113, IPTOS_LOWDELAY, EMU_IDENT }, /* identd protocol */ - {0, 0, 0, 0} -}; - -static struct emu_t *tcpemu = NULL; - -/* - * Return TOS according to the above table - */ -uint8_t -tcp_tos(struct socket *so) -{ - int i = 0; - struct emu_t *emup; - - while(tcptos[i].tos) { - if ((tcptos[i].fport && (ntohs(so->so_fport) == tcptos[i].fport)) || - (tcptos[i].lport && (ntohs(so->so_lport) == tcptos[i].lport))) { - so->so_emu = tcptos[i].emu; - return tcptos[i].tos; - } - i++; - } - - /* Nope, lets see if there's a user-added one */ - for (emup = tcpemu; emup; emup = emup->next) { - if ((emup->fport && (ntohs(so->so_fport) == emup->fport)) || - (emup->lport && (ntohs(so->so_lport) == emup->lport))) { - so->so_emu = emup->emu; - return emup->tos; - } - } - - return 0; -} - -/* - * Emulate programs that try and connect to us - * This includes ftp (the data connection is - * initiated by the server) and IRC (DCC CHAT and - * DCC SEND) for now - * - * NOTE: It's possible to crash SLiRP by sending it - * unstandard strings to emulate... if this is a problem, - * more checks are needed here - * - * XXX Assumes the whole command came in one packet - * - * XXX Some ftp clients will have their TOS set to - * LOWDELAY and so Nagel will kick in. Because of this, - * we'll get the first letter, followed by the rest, so - * we simply scan for ORT instead of PORT... - * DCC doesn't have this problem because there's other stuff - * in the packet before the DCC command. - * - * Return 1 if the mbuf m is still valid and should be - * sbappend()ed - * - * NOTE: if you return 0 you MUST m_free() the mbuf! - */ -int -tcp_emu(struct socket *so, struct mbuf *m) -{ - Slirp *slirp = so->slirp; - unsigned n1, n2, n3, n4, n5, n6; - char buff[257]; - uint32_t laddr; - unsigned lport; - char *bptr; - - DEBUG_CALL("tcp_emu"); - DEBUG_ARG("so = %p", so); - DEBUG_ARG("m = %p", m); - - switch(so->so_emu) { - int x, i; - - /* TODO: IPv6 */ - case EMU_IDENT: - /* - * Identification protocol as per rfc-1413 - */ - - { - struct socket *tmpso; - struct sockaddr_in addr; - socklen_t addrlen = sizeof(struct sockaddr_in); - struct sbuf *so_rcv = &so->so_rcv; - - if (m->m_len > so_rcv->sb_datalen - - (so_rcv->sb_wptr - so_rcv->sb_data)) { - return 1; - } - - memcpy(so_rcv->sb_wptr, m->m_data, m->m_len); - so_rcv->sb_wptr += m->m_len; - so_rcv->sb_rptr += m->m_len; - m->m_data[m->m_len] = 0; /* NULL terminate */ - if (strchr(m->m_data, '\r') || strchr(m->m_data, '\n')) { - if (sscanf(so_rcv->sb_data, "%u%*[ ,]%u", &n1, &n2) == 2) { - HTONS(n1); - HTONS(n2); - /* n2 is the one on our host */ - for (tmpso = slirp->tcb.so_next; - tmpso != &slirp->tcb; - tmpso = tmpso->so_next) { - if (tmpso->so_laddr.s_addr == so->so_laddr.s_addr && - tmpso->so_lport == n2 && - tmpso->so_faddr.s_addr == so->so_faddr.s_addr && - tmpso->so_fport == n1) { - if (getsockname(tmpso->s, - (struct sockaddr *)&addr, &addrlen) == 0) - n2 = addr.sin_port; - break; - } - } - NTOHS(n1); - NTOHS(n2); - so_rcv->sb_cc = snprintf(so_rcv->sb_data, - so_rcv->sb_datalen, - "%d,%d\r\n", n1, n2); - so_rcv->sb_rptr = so_rcv->sb_data; - so_rcv->sb_wptr = so_rcv->sb_data + so_rcv->sb_cc; - } - } - m_free(m); - return 0; - } - - case EMU_FTP: /* ftp */ - *(m->m_data+m->m_len) = 0; /* NUL terminate for strstr */ - if ((bptr = (char *)strstr(m->m_data, "ORT")) != NULL) { - /* - * Need to emulate the PORT command - */ - x = sscanf(bptr, "ORT %u,%u,%u,%u,%u,%u\r\n%256[^\177]", - &n1, &n2, &n3, &n4, &n5, &n6, buff); - if (x < 6) - return 1; - - laddr = htonl((n1 << 24) | (n2 << 16) | (n3 << 8) | (n4)); - lport = htons((n5 << 8) | (n6)); - - if ((so = tcp_listen(slirp, INADDR_ANY, 0, laddr, - lport, SS_FACCEPTONCE)) == NULL) { - return 1; - } - n6 = ntohs(so->so_fport); - - n5 = (n6 >> 8) & 0xff; - n6 &= 0xff; - - laddr = ntohl(so->so_faddr.s_addr); - - n1 = ((laddr >> 24) & 0xff); - n2 = ((laddr >> 16) & 0xff); - n3 = ((laddr >> 8) & 0xff); - n4 = (laddr & 0xff); - - m->m_len = bptr - m->m_data; /* Adjust length */ - m->m_len += snprintf(bptr, m->m_size - m->m_len, - "ORT %d,%d,%d,%d,%d,%d\r\n%s", - n1, n2, n3, n4, n5, n6, x==7?buff:""); - return 1; - } else if ((bptr = (char *)strstr(m->m_data, "27 Entering")) != NULL) { - /* - * Need to emulate the PASV response - */ - x = sscanf(bptr, "27 Entering Passive Mode (%u,%u,%u,%u,%u,%u)\r\n%256[^\177]", - &n1, &n2, &n3, &n4, &n5, &n6, buff); - if (x < 6) - return 1; - - laddr = htonl((n1 << 24) | (n2 << 16) | (n3 << 8) | (n4)); - lport = htons((n5 << 8) | (n6)); - - if ((so = tcp_listen(slirp, INADDR_ANY, 0, laddr, - lport, SS_FACCEPTONCE)) == NULL) { - return 1; - } - n6 = ntohs(so->so_fport); - - n5 = (n6 >> 8) & 0xff; - n6 &= 0xff; - - laddr = ntohl(so->so_faddr.s_addr); - - n1 = ((laddr >> 24) & 0xff); - n2 = ((laddr >> 16) & 0xff); - n3 = ((laddr >> 8) & 0xff); - n4 = (laddr & 0xff); - - m->m_len = bptr - m->m_data; /* Adjust length */ - m->m_len += snprintf(bptr, m->m_size - m->m_len, - "27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s", - n1, n2, n3, n4, n5, n6, x==7?buff:""); - - return 1; - } - - return 1; - - case EMU_KSH: - /* - * The kshell (Kerberos rsh) and shell services both pass - * a local port port number to carry signals to the server - * and stderr to the client. It is passed at the beginning - * of the connection as a NUL-terminated decimal ASCII string. - */ - so->so_emu = 0; - for (lport = 0, i = 0; i < m->m_len-1; ++i) { - if (m->m_data[i] < '0' || m->m_data[i] > '9') - return 1; /* invalid number */ - lport *= 10; - lport += m->m_data[i] - '0'; - } - if (m->m_data[m->m_len-1] == '\0' && lport != 0 && - (so = tcp_listen(slirp, INADDR_ANY, 0, so->so_laddr.s_addr, - htons(lport), SS_FACCEPTONCE)) != NULL) - m->m_len = snprintf(m->m_data, m->m_size, "%d", - ntohs(so->so_fport)) + 1; - return 1; - - case EMU_IRC: - /* - * Need to emulate DCC CHAT, DCC SEND and DCC MOVE - */ - *(m->m_data+m->m_len) = 0; /* NULL terminate the string for strstr */ - if ((bptr = (char *)strstr(m->m_data, "DCC")) == NULL) - return 1; - - /* The %256s is for the broken mIRC */ - if (sscanf(bptr, "DCC CHAT %256s %u %u", buff, &laddr, &lport) == 3) { - if ((so = tcp_listen(slirp, INADDR_ANY, 0, - htonl(laddr), htons(lport), - SS_FACCEPTONCE)) == NULL) { - return 1; - } - m->m_len = bptr - m->m_data; /* Adjust length */ - m->m_len += snprintf(bptr, m->m_size, - "DCC CHAT chat %lu %u%c\n", - (unsigned long)ntohl(so->so_faddr.s_addr), - ntohs(so->so_fport), 1); - } else if (sscanf(bptr, "DCC SEND %256s %u %u %u", buff, &laddr, &lport, &n1) == 4) { - if ((so = tcp_listen(slirp, INADDR_ANY, 0, - htonl(laddr), htons(lport), - SS_FACCEPTONCE)) == NULL) { - return 1; - } - m->m_len = bptr - m->m_data; /* Adjust length */ - m->m_len += snprintf(bptr, m->m_size, - "DCC SEND %s %lu %u %u%c\n", buff, - (unsigned long)ntohl(so->so_faddr.s_addr), - ntohs(so->so_fport), n1, 1); - } else if (sscanf(bptr, "DCC MOVE %256s %u %u %u", buff, &laddr, &lport, &n1) == 4) { - if ((so = tcp_listen(slirp, INADDR_ANY, 0, - htonl(laddr), htons(lport), - SS_FACCEPTONCE)) == NULL) { - return 1; - } - m->m_len = bptr - m->m_data; /* Adjust length */ - m->m_len += snprintf(bptr, m->m_size, - "DCC MOVE %s %lu %u %u%c\n", buff, - (unsigned long)ntohl(so->so_faddr.s_addr), - ntohs(so->so_fport), n1, 1); - } - return 1; - - case EMU_REALAUDIO: - /* - * RealAudio emulation - JP. We must try to parse the incoming - * data and try to find the two characters that contain the - * port number. Then we redirect an udp port and replace the - * number with the real port we got. - * - * The 1.0 beta versions of the player are not supported - * any more. - * - * A typical packet for player version 1.0 (release version): - * - * 0000:50 4E 41 00 05 - * 0000:00 01 00 02 1B D7 00 00 67 E6 6C DC 63 00 12 50 ........g.l.c..P - * 0010:4E 43 4C 49 45 4E 54 20 31 30 31 20 41 4C 50 48 NCLIENT 101 ALPH - * 0020:41 6C 00 00 52 00 17 72 61 66 69 6C 65 73 2F 76 Al..R..rafiles/v - * 0030:6F 61 2F 65 6E 67 6C 69 73 68 5F 2E 72 61 79 42 oa/english_.rayB - * - * Now the port number 0x1BD7 is found at offset 0x04 of the - * Now the port number 0x1BD7 is found at offset 0x04 of the - * second packet. This time we received five bytes first and - * then the rest. You never know how many bytes you get. - * - * A typical packet for player version 2.0 (beta): - * - * 0000:50 4E 41 00 06 00 02 00 00 00 01 00 02 1B C1 00 PNA............. - * 0010:00 67 75 78 F5 63 00 0A 57 69 6E 32 2E 30 2E 30 .gux.c..Win2.0.0 - * 0020:2E 35 6C 00 00 52 00 1C 72 61 66 69 6C 65 73 2F .5l..R..rafiles/ - * 0030:77 65 62 73 69 74 65 2F 32 30 72 65 6C 65 61 73 website/20releas - * 0040:65 2E 72 61 79 53 00 00 06 36 42 e.rayS...6B - * - * Port number 0x1BC1 is found at offset 0x0d. - * - * This is just a horrible switch statement. Variable ra tells - * us where we're going. - */ - - bptr = m->m_data; - while (bptr < m->m_data + m->m_len) { - uint16_t p; - static int ra = 0; - char ra_tbl[4]; - - ra_tbl[0] = 0x50; - ra_tbl[1] = 0x4e; - ra_tbl[2] = 0x41; - ra_tbl[3] = 0; - - switch (ra) { - case 0: - case 2: - case 3: - if (*bptr++ != ra_tbl[ra]) { - ra = 0; - continue; - } - break; - - case 1: - /* - * We may get 0x50 several times, ignore them - */ - if (*bptr == 0x50) { - ra = 1; - bptr++; - continue; - } else if (*bptr++ != ra_tbl[ra]) { - ra = 0; - continue; - } - break; - - case 4: - /* - * skip version number - */ - bptr++; - break; - - case 5: - /* - * The difference between versions 1.0 and - * 2.0 is here. For future versions of - * the player this may need to be modified. - */ - if (*(bptr + 1) == 0x02) - bptr += 8; - else - bptr += 4; - break; - - case 6: - /* This is the field containing the port - * number that RA-player is listening to. - */ - lport = (((uint8_t*)bptr)[0] << 8) - + ((uint8_t *)bptr)[1]; - if (lport < 6970) - lport += 256; /* don't know why */ - if (lport < 6970 || lport > 7170) - return 1; /* failed */ - - /* try to get udp port between 6970 - 7170 */ - for (p = 6970; p < 7071; p++) { - if (udp_listen(slirp, INADDR_ANY, - htons(p), - so->so_laddr.s_addr, - htons(lport), - SS_FACCEPTONCE)) { - break; - } - } - if (p == 7071) - p = 0; - *(uint8_t *)bptr++ = (p >> 8) & 0xff; - *(uint8_t *)bptr = p & 0xff; - ra = 0; - return 1; /* port redirected, we're done */ - break; - - default: - ra = 0; - } - ra++; - } - return 1; - - default: - /* Ooops, not emulated, won't call tcp_emu again */ - so->so_emu = 0; - return 1; - } -} - -/* - * Do misc. config of SLiRP while its running. - * Return 0 if this connections is to be closed, 1 otherwise, - * return 2 if this is a command-line connection - */ -int tcp_ctl(struct socket *so) -{ - Slirp *slirp = so->slirp; - struct sbuf *sb = &so->so_snd; - struct gfwd_list *ex_ptr; - - DEBUG_CALL("tcp_ctl"); - DEBUG_ARG("so = %p", so); - - /* TODO: IPv6 */ - if (so->so_faddr.s_addr != slirp->vhost_addr.s_addr) { - /* Check if it's pty_exec */ - for (ex_ptr = slirp->guestfwd_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { - if (ex_ptr->ex_fport == so->so_fport && - so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr) { - if (ex_ptr->write_cb) { - so->s = -1; - so->guestfwd = ex_ptr; - return 1; - } - DEBUG_MISC(" executing %s", ex_ptr->ex_exec); - return fork_exec(so, ex_ptr->ex_exec); - } - } - } - sb->sb_cc = - snprintf(sb->sb_wptr, sb->sb_datalen - (sb->sb_wptr - sb->sb_data), - "Error: No application configured.\r\n"); - sb->sb_wptr += sb->sb_cc; - return 0; -} diff --git a/slirp/src/tcp_timer.c b/slirp/src/tcp_timer.c deleted file mode 100644 index be361a1bb6..0000000000 --- a/slirp/src/tcp_timer.c +++ /dev/null @@ -1,294 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1988, 1990, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)tcp_timer.c 8.1 (Berkeley) 6/10/93 - * tcp_timer.c,v 1.2 1994/08/02 07:49:10 davidg Exp - */ - -#include "slirp.h" - -static struct tcpcb *tcp_timers(register struct tcpcb *tp, int timer); - -/* - * Fast timeout routine for processing delayed acks - */ -void -tcp_fasttimo(Slirp *slirp) -{ - register struct socket *so; - register struct tcpcb *tp; - - DEBUG_CALL("tcp_fasttimo"); - - so = slirp->tcb.so_next; - if (so) - for (; so != &slirp->tcb; so = so->so_next) - if ((tp = (struct tcpcb *)so->so_tcpcb) && - (tp->t_flags & TF_DELACK)) { - tp->t_flags &= ~TF_DELACK; - tp->t_flags |= TF_ACKNOW; - (void) tcp_output(tp); - } -} - -/* - * Tcp protocol timeout routine called every 500 ms. - * Updates the timers in all active tcb's and - * causes finite state machine actions if timers expire. - */ -void -tcp_slowtimo(Slirp *slirp) -{ - register struct socket *ip, *ipnxt; - register struct tcpcb *tp; - register int i; - - DEBUG_CALL("tcp_slowtimo"); - - /* - * Search through tcb's and update active timers. - */ - ip = slirp->tcb.so_next; - if (ip == NULL) { - return; - } - for (; ip != &slirp->tcb; ip = ipnxt) { - ipnxt = ip->so_next; - tp = sototcpcb(ip); - if (tp == NULL) { - continue; - } - for (i = 0; i < TCPT_NTIMERS; i++) { - if (tp->t_timer[i] && --tp->t_timer[i] == 0) { - tcp_timers(tp,i); - if (ipnxt->so_prev != ip) - goto tpgone; - } - } - tp->t_idle++; - if (tp->t_rtt) - tp->t_rtt++; -tpgone: - ; - } - slirp->tcp_iss += TCP_ISSINCR/PR_SLOWHZ; /* increment iss */ - slirp->tcp_now++; /* for timestamps */ -} - -/* - * Cancel all timers for TCP tp. - */ -void -tcp_canceltimers(struct tcpcb *tp) -{ - register int i; - - for (i = 0; i < TCPT_NTIMERS; i++) - tp->t_timer[i] = 0; -} - -const int tcp_backoff[TCP_MAXRXTSHIFT + 1] = - { 1, 2, 4, 8, 16, 32, 64, 64, 64, 64, 64, 64, 64 }; - -/* - * TCP timer processing. - */ -static struct tcpcb * -tcp_timers(register struct tcpcb *tp, int timer) -{ - register int rexmt; - - DEBUG_CALL("tcp_timers"); - - switch (timer) { - - /* - * 2 MSL timeout in shutdown went off. If we're closed but - * still waiting for peer to close and connection has been idle - * too long, or if 2MSL time is up from TIME_WAIT, delete connection - * control block. Otherwise, check again in a bit. - */ - case TCPT_2MSL: - if (tp->t_state != TCPS_TIME_WAIT && - tp->t_idle <= TCP_MAXIDLE) - tp->t_timer[TCPT_2MSL] = TCPTV_KEEPINTVL; - else - tp = tcp_close(tp); - break; - - /* - * Retransmission timer went off. Message has not - * been acked within retransmit interval. Back off - * to a longer retransmit interval and retransmit one segment. - */ - case TCPT_REXMT: - - /* - * XXXXX If a packet has timed out, then remove all the queued - * packets for that session. - */ - - if (++tp->t_rxtshift > TCP_MAXRXTSHIFT) { - /* - * This is a hack to suit our terminal server here at the uni of canberra - * since they have trouble with zeroes... It usually lets them through - * unharmed, but under some conditions, it'll eat the zeros. If we - * keep retransmitting it, it'll keep eating the zeroes, so we keep - * retransmitting, and eventually the connection dies... - * (this only happens on incoming data) - * - * So, if we were gonna drop the connection from too many retransmits, - * don't... instead halve the t_maxseg, which might break up the NULLs and - * let them through - * - * *sigh* - */ - - tp->t_maxseg >>= 1; - if (tp->t_maxseg < 32) { - /* - * We tried our best, now the connection must die! - */ - tp->t_rxtshift = TCP_MAXRXTSHIFT; - tp = tcp_drop(tp, tp->t_softerror); - /* tp->t_softerror : ETIMEDOUT); */ /* XXX */ - return (tp); /* XXX */ - } - - /* - * Set rxtshift to 6, which is still at the maximum - * backoff time - */ - tp->t_rxtshift = 6; - } - rexmt = TCP_REXMTVAL(tp) * tcp_backoff[tp->t_rxtshift]; - TCPT_RANGESET(tp->t_rxtcur, rexmt, - (short)tp->t_rttmin, TCPTV_REXMTMAX); /* XXX */ - tp->t_timer[TCPT_REXMT] = tp->t_rxtcur; - /* - * If losing, let the lower level know and try for - * a better route. Also, if we backed off this far, - * our srtt estimate is probably bogus. Clobber it - * so we'll take the next rtt measurement as our srtt; - * move the current srtt into rttvar to keep the current - * retransmit times until then. - */ - if (tp->t_rxtshift > TCP_MAXRXTSHIFT / 4) { - tp->t_rttvar += (tp->t_srtt >> TCP_RTT_SHIFT); - tp->t_srtt = 0; - } - tp->snd_nxt = tp->snd_una; - /* - * If timing a segment in this window, stop the timer. - */ - tp->t_rtt = 0; - /* - * Close the congestion window down to one segment - * (we'll open it by one segment for each ack we get). - * Since we probably have a window's worth of unacked - * data accumulated, this "slow start" keeps us from - * dumping all that data as back-to-back packets (which - * might overwhelm an intermediate gateway). - * - * There are two phases to the opening: Initially we - * open by one mss on each ack. This makes the window - * size increase exponentially with time. If the - * window is larger than the path can handle, this - * exponential growth results in dropped packet(s) - * almost immediately. To get more time between - * drops but still "push" the network to take advantage - * of improving conditions, we switch from exponential - * to linear window opening at some threshold size. - * For a threshold, we use half the current window - * size, truncated to a multiple of the mss. - * - * (the minimum cwnd that will give us exponential - * growth is 2 mss. We don't allow the threshold - * to go below this.) - */ - { - unsigned win = MIN(tp->snd_wnd, tp->snd_cwnd) / 2 / tp->t_maxseg; - if (win < 2) - win = 2; - tp->snd_cwnd = tp->t_maxseg; - tp->snd_ssthresh = win * tp->t_maxseg; - tp->t_dupacks = 0; - } - (void) tcp_output(tp); - break; - - /* - * Persistence timer into zero window. - * Force a byte to be output, if possible. - */ - case TCPT_PERSIST: - tcp_setpersist(tp); - tp->t_force = 1; - (void) tcp_output(tp); - tp->t_force = 0; - break; - - /* - * Keep-alive timer went off; send something - * or drop connection if idle for too long. - */ - case TCPT_KEEP: - if (tp->t_state < TCPS_ESTABLISHED) - goto dropit; - - if (slirp_do_keepalive && tp->t_state <= TCPS_CLOSE_WAIT) { - if (tp->t_idle >= TCPTV_KEEP_IDLE + TCP_MAXIDLE) - goto dropit; - /* - * Send a packet designed to force a response - * if the peer is up and reachable: - * either an ACK if the connection is still alive, - * or an RST if the peer has closed the connection - * due to timeout or reboot. - * Using sequence number tp->snd_una-1 - * causes the transmitted zero-length segment - * to lie outside the receive window; - * by the protocol spec, this requires the - * correspondent TCP to respond. - */ - tcp_respond(tp, &tp->t_template, (struct mbuf *)NULL, - tp->rcv_nxt, tp->snd_una - 1, 0, - tp->t_socket->so_ffamily); - tp->t_timer[TCPT_KEEP] = TCPTV_KEEPINTVL; - } else - tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_IDLE; - break; - - dropit: - tp = tcp_drop(tp, 0); - break; - } - - return (tp); -} diff --git a/slirp/src/tcp_timer.h b/slirp/src/tcp_timer.h deleted file mode 100644 index 709f63987a..0000000000 --- a/slirp/src/tcp_timer.h +++ /dev/null @@ -1,128 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)tcp_timer.h 8.1 (Berkeley) 6/10/93 - * tcp_timer.h,v 1.4 1994/08/21 05:27:38 paul Exp - */ - -#ifndef TCP_TIMER_H -#define TCP_TIMER_H - -/* - * Definitions of the TCP timers. These timers are counted - * down PR_SLOWHZ times a second. - */ -#define TCPT_NTIMERS 4 - -#define TCPT_REXMT 0 /* retransmit */ -#define TCPT_PERSIST 1 /* retransmit persistence */ -#define TCPT_KEEP 2 /* keep alive */ -#define TCPT_2MSL 3 /* 2*msl quiet time timer */ - -/* - * The TCPT_REXMT timer is used to force retransmissions. - * The TCP has the TCPT_REXMT timer set whenever segments - * have been sent for which ACKs are expected but not yet - * received. If an ACK is received which advances tp->snd_una, - * then the retransmit timer is cleared (if there are no more - * outstanding segments) or reset to the base value (if there - * are more ACKs expected). Whenever the retransmit timer goes off, - * we retransmit one unacknowledged segment, and do a backoff - * on the retransmit timer. - * - * The TCPT_PERSIST timer is used to keep window size information - * flowing even if the window goes shut. If all previous transmissions - * have been acknowledged (so that there are no retransmissions in progress), - * and the window is too small to bother sending anything, then we start - * the TCPT_PERSIST timer. When it expires, if the window is nonzero, - * we go to transmit state. Otherwise, at intervals send a single byte - * into the peer's window to force him to update our window information. - * We do this at most as often as TCPT_PERSMIN time intervals, - * but no more frequently than the current estimate of round-trip - * packet time. The TCPT_PERSIST timer is cleared whenever we receive - * a window update from the peer. - * - * The TCPT_KEEP timer is used to keep connections alive. If an - * connection is idle (no segments received) for TCPTV_KEEP_INIT amount of time, - * but not yet established, then we drop the connection. Once the connection - * is established, if the connection is idle for TCPTV_KEEP_IDLE time - * (and keepalives have been enabled on the socket), we begin to probe - * the connection. We force the peer to send us a segment by sending: - * <SEQ=SND.UNA-1><ACK=RCV.NXT><CTL=ACK> - * This segment is (deliberately) outside the window, and should elicit - * an ack segment in response from the peer. If, despite the TCPT_KEEP - * initiated segments we cannot elicit a response from a peer in TCPT_MAXIDLE - * amount of time probing, then we drop the connection. - */ - -/* - * Time constants. - */ -#define TCPTV_MSL ( 5*PR_SLOWHZ) /* max seg lifetime (hah!) */ - -#define TCPTV_SRTTBASE 0 /* base roundtrip time; - if 0, no idea yet */ -#define TCPTV_SRTTDFLT ( 3*PR_SLOWHZ) /* assumed RTT if no info */ - -#define TCPTV_PERSMIN ( 5*PR_SLOWHZ) /* retransmit persistence */ -#define TCPTV_PERSMAX ( 60*PR_SLOWHZ) /* maximum persist interval */ - -#define TCPTV_KEEP_INIT ( 75*PR_SLOWHZ) /* initial connect keep alive */ -#define TCPTV_KEEP_IDLE (120*60*PR_SLOWHZ) /* dflt time before probing */ -#define TCPTV_KEEPINTVL ( 75*PR_SLOWHZ) /* default probe interval */ -#define TCPTV_KEEPCNT 8 /* max probes before drop */ - -#define TCPTV_MIN ( 1*PR_SLOWHZ) /* minimum allowable value */ -#define TCPTV_REXMTMAX ( 12*PR_SLOWHZ) /* max allowable REXMT value */ - -#define TCP_LINGERTIME 120 /* linger at most 2 minutes */ - -#define TCP_MAXRXTSHIFT 12 /* maximum retransmits */ - - -/* - * Force a time value to be in a certain range. - */ -#define TCPT_RANGESET(tv, value, tvmin, tvmax) { \ - (tv) = (value); \ - if ((tv) < (tvmin)) \ - (tv) = (tvmin); \ - else if ((tv) > (tvmax)) \ - (tv) = (tvmax); \ -} - -extern const int tcp_backoff[]; - -struct tcpcb; - -void tcp_fasttimo(Slirp *); -void tcp_slowtimo(Slirp *); -void tcp_canceltimers(struct tcpcb *); - -#endif diff --git a/slirp/src/tcp_var.h b/slirp/src/tcp_var.h deleted file mode 100644 index 162be6e95e..0000000000 --- a/slirp/src/tcp_var.h +++ /dev/null @@ -1,162 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1993, 1994 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)tcp_var.h 8.3 (Berkeley) 4/10/94 - * tcp_var.h,v 1.3 1994/08/21 05:27:39 paul Exp - */ - -#ifndef TCP_VAR_H -#define TCP_VAR_H - -#include "tcpip.h" -#include "tcp_timer.h" - -/* - * Tcp control block, one per tcp; fields: - */ -struct tcpcb { - struct tcpiphdr *seg_next; /* sequencing queue */ - struct tcpiphdr *seg_prev; - short t_state; /* state of this connection */ - short t_timer[TCPT_NTIMERS]; /* tcp timers */ - short t_rxtshift; /* log(2) of rexmt exp. backoff */ - short t_rxtcur; /* current retransmit value */ - short t_dupacks; /* consecutive dup acks recd */ - uint16_t t_maxseg; /* maximum segment size */ - uint8_t t_force; /* 1 if forcing out a byte */ - uint16_t t_flags; -#define TF_ACKNOW 0x0001 /* ack peer immediately */ -#define TF_DELACK 0x0002 /* ack, but try to delay it */ -#define TF_NODELAY 0x0004 /* don't delay packets to coalesce */ -#define TF_NOOPT 0x0008 /* don't use tcp options */ -#define TF_SENTFIN 0x0010 /* have sent FIN */ -#define TF_REQ_SCALE 0x0020 /* have/will request window scaling */ -#define TF_RCVD_SCALE 0x0040 /* other side has requested scaling */ -#define TF_REQ_TSTMP 0x0080 /* have/will request timestamps */ -#define TF_RCVD_TSTMP 0x0100 /* a timestamp was received in SYN */ -#define TF_SACK_PERMIT 0x0200 /* other side said I could SACK */ - - struct tcpiphdr t_template; /* static skeletal packet for xmit */ - - struct socket *t_socket; /* back pointer to socket */ -/* - * The following fields are used as in the protocol specification. - * See RFC783, Dec. 1981, page 21. - */ -/* send sequence variables */ - tcp_seq snd_una; /* send unacknowledged */ - tcp_seq snd_nxt; /* send next */ - tcp_seq snd_up; /* send urgent pointer */ - tcp_seq snd_wl1; /* window update seg seq number */ - tcp_seq snd_wl2; /* window update seg ack number */ - tcp_seq iss; /* initial send sequence number */ - uint32_t snd_wnd; /* send window */ -/* receive sequence variables */ - uint32_t rcv_wnd; /* receive window */ - tcp_seq rcv_nxt; /* receive next */ - tcp_seq rcv_up; /* receive urgent pointer */ - tcp_seq irs; /* initial receive sequence number */ -/* - * Additional variables for this implementation. - */ -/* receive variables */ - tcp_seq rcv_adv; /* advertised window */ -/* retransmit variables */ - tcp_seq snd_max; /* highest sequence number sent; - * used to recognize retransmits - */ -/* congestion control (for slow start, source quench, retransmit after loss) */ - uint32_t snd_cwnd; /* congestion-controlled window */ - uint32_t snd_ssthresh; /* snd_cwnd size threshold for - * for slow start exponential to - * linear switch - */ -/* - * transmit timing stuff. See below for scale of srtt and rttvar. - * "Variance" is actually smoothed difference. - */ - short t_idle; /* inactivity time */ - short t_rtt; /* round trip time */ - tcp_seq t_rtseq; /* sequence number being timed */ - short t_srtt; /* smoothed round-trip time */ - short t_rttvar; /* variance in round-trip time */ - uint16_t t_rttmin; /* minimum rtt allowed */ - uint32_t max_sndwnd; /* largest window peer has offered */ - -/* out-of-band data */ - uint8_t t_oobflags; /* have some */ - uint8_t t_iobc; /* input character */ -#define TCPOOB_HAVEDATA 0x01 -#define TCPOOB_HADDATA 0x02 - short t_softerror; /* possible error not yet reported */ - -/* RFC 1323 variables */ - uint8_t snd_scale; /* window scaling for send window */ - uint8_t rcv_scale; /* window scaling for recv window */ - uint8_t request_r_scale; /* pending window scaling */ - uint8_t requested_s_scale; - uint32_t ts_recent; /* timestamp echo data */ - uint32_t ts_recent_age; /* when last updated */ - tcp_seq last_ack_sent; - -}; - -#define sototcpcb(so) ((so)->so_tcpcb) - -/* - * The smoothed round-trip time and estimated variance - * are stored as fixed point numbers scaled by the values below. - * For convenience, these scales are also used in smoothing the average - * (smoothed = (1/scale)sample + ((scale-1)/scale)smoothed). - * With these scales, srtt has 3 bits to the right of the binary point, - * and thus an "ALPHA" of 0.875. rttvar has 2 bits to the right of the - * binary point, and is smoothed with an ALPHA of 0.75. - */ -#define TCP_RTT_SCALE 8 /* multiplier for srtt; 3 bits frac. */ -#define TCP_RTT_SHIFT 3 /* shift for srtt; 3 bits frac. */ -#define TCP_RTTVAR_SCALE 4 /* multiplier for rttvar; 2 bits */ -#define TCP_RTTVAR_SHIFT 2 /* multiplier for rttvar; 2 bits */ - -/* - * The initial retransmission should happen at rtt + 4 * rttvar. - * Because of the way we do the smoothing, srtt and rttvar - * will each average +1/2 tick of bias. When we compute - * the retransmit timer, we want 1/2 tick of rounding and - * 1 extra tick because of +-1/2 tick uncertainty in the - * firing of the timer. The bias will give us exactly the - * 1.5 tick we need. But, because the bias is - * statistical, we have to test that we don't drop below - * the minimum feasible timer (which is 2 ticks). - * This macro assumes that the value of TCP_RTTVAR_SCALE - * is the same as the multiplier for rttvar. - */ -#define TCP_REXMTVAL(tp) \ - (((tp)->t_srtt >> TCP_RTT_SHIFT) + (tp)->t_rttvar) - -#endif diff --git a/slirp/src/tcpip.h b/slirp/src/tcpip.h deleted file mode 100644 index 560a86417c..0000000000 --- a/slirp/src/tcpip.h +++ /dev/null @@ -1,102 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)tcpip.h 8.1 (Berkeley) 6/10/93 - * tcpip.h,v 1.3 1994/08/21 05:27:40 paul Exp - */ - -#ifndef TCPIP_H -#define TCPIP_H - -/* - * Tcp+ip header, after ip options removed. - */ -struct tcpiphdr { - struct mbuf_ptr ih_mbuf; /* backpointer to mbuf */ - union { - struct { - struct in_addr ih_src; /* source internet address */ - struct in_addr ih_dst; /* destination internet address */ - uint8_t ih_x1; /* (unused) */ - uint8_t ih_pr; /* protocol */ - } ti_i4; - struct { - struct in6_addr ih_src; - struct in6_addr ih_dst; - uint8_t ih_x1; - uint8_t ih_nh; - } ti_i6; - } ti; - uint16_t ti_x0; - uint16_t ti_len; /* protocol length */ - struct tcphdr ti_t; /* tcp header */ -}; -#define ti_mbuf ih_mbuf.mptr -#define ti_pr ti.ti_i4.ih_pr -#define ti_src ti.ti_i4.ih_src -#define ti_dst ti.ti_i4.ih_dst -#define ti_src6 ti.ti_i6.ih_src -#define ti_dst6 ti.ti_i6.ih_dst -#define ti_nh6 ti.ti_i6.ih_nh -#define ti_sport ti_t.th_sport -#define ti_dport ti_t.th_dport -#define ti_seq ti_t.th_seq -#define ti_ack ti_t.th_ack -#define ti_x2 ti_t.th_x2 -#define ti_off ti_t.th_off -#define ti_flags ti_t.th_flags -#define ti_win ti_t.th_win -#define ti_sum ti_t.th_sum -#define ti_urp ti_t.th_urp - -#define tcpiphdr2qlink(T) ((struct qlink*)(((char*)(T)) - sizeof(struct qlink))) -#define qlink2tcpiphdr(Q) ((struct tcpiphdr*)(((char*)(Q)) + sizeof(struct qlink))) -#define tcpiphdr_next(T) qlink2tcpiphdr(tcpiphdr2qlink(T)->next) -#define tcpiphdr_prev(T) qlink2tcpiphdr(tcpiphdr2qlink(T)->prev) -#define tcpfrag_list_first(T) qlink2tcpiphdr((T)->seg_next) -#define tcpfrag_list_end(F, T) (tcpiphdr2qlink(F) == (struct qlink*)(T)) -#define tcpfrag_list_empty(T) ((T)->seg_next == (struct tcpiphdr*)(T)) - -/* This is the difference between the size of a tcpiphdr structure, and the - * size of actual ip+tcp headers, rounded up since we need to align data. */ -#define TCPIPHDR_DELTA\ - (MAX(0,\ - (sizeof(struct tcpiphdr)\ - - sizeof(struct ip) - sizeof(struct tcphdr) + 3) & ~3)) - -/* - * Just a clean way to get to the first byte - * of the packet - */ -struct tcpiphdr_2 { - struct tcpiphdr dummy; - char first_char; -}; - -#endif diff --git a/slirp/src/tftp.c b/slirp/src/tftp.c deleted file mode 100644 index 2071dca2a6..0000000000 --- a/slirp/src/tftp.c +++ /dev/null @@ -1,463 +0,0 @@ -/* SPDX-License-Identifier: MIT */ -/* - * tftp.c - a simple, read-only tftp server for qemu - * - * Copyright (c) 2004 Magnus Damm <damm@opensource.se> - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "slirp.h" - -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> - -static inline int tftp_session_in_use(struct tftp_session *spt) -{ - return (spt->slirp != NULL); -} - -static inline void tftp_session_update(struct tftp_session *spt) -{ - spt->timestamp = curtime; -} - -static void tftp_session_terminate(struct tftp_session *spt) -{ - if (spt->fd >= 0) { - close(spt->fd); - spt->fd = -1; - } - g_free(spt->filename); - spt->slirp = NULL; -} - -static int tftp_session_allocate(Slirp *slirp, struct sockaddr_storage *srcsas, - struct tftp_t *tp) -{ - struct tftp_session *spt; - int k; - - for (k = 0; k < TFTP_SESSIONS_MAX; k++) { - spt = &slirp->tftp_sessions[k]; - - if (!tftp_session_in_use(spt)) - goto found; - - /* sessions time out after 5 inactive seconds */ - if ((int)(curtime - spt->timestamp) > 5000) { - tftp_session_terminate(spt); - goto found; - } - } - - return -1; - - found: - memset(spt, 0, sizeof(*spt)); - memcpy(&spt->client_addr, srcsas, sockaddr_size(srcsas)); - spt->fd = -1; - spt->block_size = 512; - spt->client_port = tp->udp.uh_sport; - spt->slirp = slirp; - - tftp_session_update(spt); - - return k; -} - -static int tftp_session_find(Slirp *slirp, struct sockaddr_storage *srcsas, - struct tftp_t *tp) -{ - struct tftp_session *spt; - int k; - - for (k = 0; k < TFTP_SESSIONS_MAX; k++) { - spt = &slirp->tftp_sessions[k]; - - if (tftp_session_in_use(spt)) { - if (sockaddr_equal(&spt->client_addr, srcsas)) { - if (spt->client_port == tp->udp.uh_sport) { - return k; - } - } - } - } - - return -1; -} - -static int tftp_read_data(struct tftp_session *spt, uint32_t block_nr, - uint8_t *buf, int len) -{ - int bytes_read = 0; - - if (spt->fd < 0) { - spt->fd = open(spt->filename, O_RDONLY | O_BINARY); - } - - if (spt->fd < 0) { - return -1; - } - - if (len) { - lseek(spt->fd, block_nr * spt->block_size, SEEK_SET); - - bytes_read = read(spt->fd, buf, len); - } - - return bytes_read; -} - -static struct tftp_t *tftp_prep_mbuf_data(struct tftp_session *spt, - struct mbuf *m) -{ - struct tftp_t *tp; - - memset(m->m_data, 0, m->m_size); - - m->m_data += IF_MAXLINKHDR; - if (spt->client_addr.ss_family == AF_INET6) { - m->m_data += sizeof(struct ip6); - } else { - m->m_data += sizeof(struct ip); - } - tp = (void *)m->m_data; - m->m_data += sizeof(struct udphdr); - - return tp; -} - -static void tftp_udp_output(struct tftp_session *spt, struct mbuf *m, - struct tftp_t *recv_tp) -{ - if (spt->client_addr.ss_family == AF_INET6) { - struct sockaddr_in6 sa6, da6; - - sa6.sin6_addr = spt->slirp->vhost_addr6; - sa6.sin6_port = recv_tp->udp.uh_dport; - da6.sin6_addr = ((struct sockaddr_in6 *)&spt->client_addr)->sin6_addr; - da6.sin6_port = spt->client_port; - - udp6_output(NULL, m, &sa6, &da6); - } else { - struct sockaddr_in sa4, da4; - - sa4.sin_addr = spt->slirp->vhost_addr; - sa4.sin_port = recv_tp->udp.uh_dport; - da4.sin_addr = ((struct sockaddr_in *)&spt->client_addr)->sin_addr; - da4.sin_port = spt->client_port; - - udp_output(NULL, m, &sa4, &da4, IPTOS_LOWDELAY); - } -} - -static int tftp_send_oack(struct tftp_session *spt, - const char *keys[], uint32_t values[], int nb, - struct tftp_t *recv_tp) -{ - struct mbuf *m; - struct tftp_t *tp; - int i, n = 0; - - m = m_get(spt->slirp); - - if (!m) - return -1; - - tp = tftp_prep_mbuf_data(spt, m); - - tp->tp_op = htons(TFTP_OACK); - for (i = 0; i < nb; i++) { - n += snprintf(tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%s", - keys[i]) + 1; - n += snprintf(tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%u", - values[i]) + 1; - } - - m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX + 2) + n - - sizeof(struct udphdr); - tftp_udp_output(spt, m, recv_tp); - - return 0; -} - -static void tftp_send_error(struct tftp_session *spt, - uint16_t errorcode, const char *msg, - struct tftp_t *recv_tp) -{ - struct mbuf *m; - struct tftp_t *tp; - - DEBUG_TFTP("tftp error msg: %s", msg); - - m = m_get(spt->slirp); - - if (!m) { - goto out; - } - - tp = tftp_prep_mbuf_data(spt, m); - - tp->tp_op = htons(TFTP_ERROR); - tp->x.tp_error.tp_error_code = htons(errorcode); - slirp_pstrcpy((char *)tp->x.tp_error.tp_msg, sizeof(tp->x.tp_error.tp_msg), msg); - - m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX + 2) + 3 + strlen(msg) - - sizeof(struct udphdr); - tftp_udp_output(spt, m, recv_tp); - -out: - tftp_session_terminate(spt); -} - -static void tftp_send_next_block(struct tftp_session *spt, - struct tftp_t *recv_tp) -{ - struct mbuf *m; - struct tftp_t *tp; - int nobytes; - - m = m_get(spt->slirp); - - if (!m) { - return; - } - - tp = tftp_prep_mbuf_data(spt, m); - - tp->tp_op = htons(TFTP_DATA); - tp->x.tp_data.tp_block_nr = htons((spt->block_nr + 1) & 0xffff); - - nobytes = tftp_read_data(spt, spt->block_nr, tp->x.tp_data.tp_buf, - spt->block_size); - - if (nobytes < 0) { - m_free(m); - - /* send "file not found" error back */ - - tftp_send_error(spt, 1, "File not found", tp); - - return; - } - - m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX - nobytes) - - sizeof(struct udphdr); - tftp_udp_output(spt, m, recv_tp); - - if (nobytes == spt->block_size) { - tftp_session_update(spt); - } - else { - tftp_session_terminate(spt); - } - - spt->block_nr++; -} - -static void tftp_handle_rrq(Slirp *slirp, struct sockaddr_storage *srcsas, - struct tftp_t *tp, int pktlen) -{ - struct tftp_session *spt; - int s, k; - size_t prefix_len; - char *req_fname; - const char *option_name[2]; - uint32_t option_value[2]; - int nb_options = 0; - - /* check if a session already exists and if so terminate it */ - s = tftp_session_find(slirp, srcsas, tp); - if (s >= 0) { - tftp_session_terminate(&slirp->tftp_sessions[s]); - } - - s = tftp_session_allocate(slirp, srcsas, tp); - - if (s < 0) { - return; - } - - spt = &slirp->tftp_sessions[s]; - - /* unspecified prefix means service disabled */ - if (!slirp->tftp_prefix) { - tftp_send_error(spt, 2, "Access violation", tp); - return; - } - - /* skip header fields */ - k = 0; - pktlen -= offsetof(struct tftp_t, x.tp_buf); - - /* prepend tftp_prefix */ - prefix_len = strlen(slirp->tftp_prefix); - spt->filename = g_malloc(prefix_len + TFTP_FILENAME_MAX + 2); - memcpy(spt->filename, slirp->tftp_prefix, prefix_len); - spt->filename[prefix_len] = '/'; - - /* get name */ - req_fname = spt->filename + prefix_len + 1; - - while (1) { - if (k >= TFTP_FILENAME_MAX || k >= pktlen) { - tftp_send_error(spt, 2, "Access violation", tp); - return; - } - req_fname[k] = tp->x.tp_buf[k]; - if (req_fname[k++] == '\0') { - break; - } - } - - DEBUG_TFTP("tftp rrq file: %s", req_fname); - - /* check mode */ - if ((pktlen - k) < 6) { - tftp_send_error(spt, 2, "Access violation", tp); - return; - } - - if (strcasecmp(&tp->x.tp_buf[k], "octet") != 0) { - tftp_send_error(spt, 4, "Unsupported transfer mode", tp); - return; - } - - k += 6; /* skipping octet */ - - /* do sanity checks on the filename */ - if (!strncmp(req_fname, "../", 3) || - req_fname[strlen(req_fname) - 1] == '/' || - strstr(req_fname, "/../")) { - tftp_send_error(spt, 2, "Access violation", tp); - return; - } - - /* check if the file exists */ - if (tftp_read_data(spt, 0, NULL, 0) < 0) { - tftp_send_error(spt, 1, "File not found", tp); - return; - } - - if (tp->x.tp_buf[pktlen - 1] != 0) { - tftp_send_error(spt, 2, "Access violation", tp); - return; - } - - while (k < pktlen && nb_options < G_N_ELEMENTS(option_name)) { - const char *key, *value; - - key = &tp->x.tp_buf[k]; - k += strlen(key) + 1; - - if (k >= pktlen) { - tftp_send_error(spt, 2, "Access violation", tp); - return; - } - - value = &tp->x.tp_buf[k]; - k += strlen(value) + 1; - - if (strcasecmp(key, "tsize") == 0) { - int tsize = atoi(value); - struct stat stat_p; - - if (tsize == 0) { - if (stat(spt->filename, &stat_p) == 0) - tsize = stat_p.st_size; - else { - tftp_send_error(spt, 1, "File not found", tp); - return; - } - } - - option_name[nb_options] = "tsize"; - option_value[nb_options] = tsize; - nb_options++; - } else if (strcasecmp(key, "blksize") == 0) { - int blksize = atoi(value); - - /* Accept blksize up to our maximum size */ - if (blksize > 0) { - spt->block_size = MIN(blksize, TFTP_BLOCKSIZE_MAX); - option_name[nb_options] = "blksize"; - option_value[nb_options] = spt->block_size; - nb_options++; - } - } - } - - if (nb_options > 0) { - assert(nb_options <= G_N_ELEMENTS(option_name)); - tftp_send_oack(spt, option_name, option_value, nb_options, tp); - return; - } - - spt->block_nr = 0; - tftp_send_next_block(spt, tp); -} - -static void tftp_handle_ack(Slirp *slirp, struct sockaddr_storage *srcsas, - struct tftp_t *tp, int pktlen) -{ - int s; - - s = tftp_session_find(slirp, srcsas, tp); - - if (s < 0) { - return; - } - - tftp_send_next_block(&slirp->tftp_sessions[s], tp); -} - -static void tftp_handle_error(Slirp *slirp, struct sockaddr_storage *srcsas, - struct tftp_t *tp, int pktlen) -{ - int s; - - s = tftp_session_find(slirp, srcsas, tp); - - if (s < 0) { - return; - } - - tftp_session_terminate(&slirp->tftp_sessions[s]); -} - -void tftp_input(struct sockaddr_storage *srcsas, struct mbuf *m) -{ - struct tftp_t *tp = (struct tftp_t *)m->m_data; - - switch(ntohs(tp->tp_op)) { - case TFTP_RRQ: - tftp_handle_rrq(m->slirp, srcsas, tp, m->m_len); - break; - - case TFTP_ACK: - tftp_handle_ack(m->slirp, srcsas, tp, m->m_len); - break; - - case TFTP_ERROR: - tftp_handle_error(m->slirp, srcsas, tp, m->m_len); - break; - } -} diff --git a/slirp/src/tftp.h b/slirp/src/tftp.h deleted file mode 100644 index 3fe3b70205..0000000000 --- a/slirp/src/tftp.h +++ /dev/null @@ -1,52 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* tftp defines */ - -#ifndef SLIRP_TFTP_H -#define SLIRP_TFTP_H - -#define TFTP_SESSIONS_MAX 20 - -#define TFTP_SERVER 69 - -#define TFTP_RRQ 1 -#define TFTP_WRQ 2 -#define TFTP_DATA 3 -#define TFTP_ACK 4 -#define TFTP_ERROR 5 -#define TFTP_OACK 6 - -#define TFTP_FILENAME_MAX 512 -#define TFTP_BLOCKSIZE_MAX 1428 - -struct tftp_t { - struct udphdr udp; - uint16_t tp_op; - union { - struct { - uint16_t tp_block_nr; - uint8_t tp_buf[TFTP_BLOCKSIZE_MAX]; - } tp_data; - struct { - uint16_t tp_error_code; - uint8_t tp_msg[TFTP_BLOCKSIZE_MAX]; - } tp_error; - char tp_buf[TFTP_BLOCKSIZE_MAX + 2]; - } x; -} __attribute__((packed)); - -struct tftp_session { - Slirp *slirp; - char *filename; - int fd; - uint16_t block_size; - - struct sockaddr_storage client_addr; - uint16_t client_port; - uint32_t block_nr; - - int timestamp; -}; - -void tftp_input(struct sockaddr_storage *srcsas, struct mbuf *m); - -#endif diff --git a/slirp/src/udp.c b/slirp/src/udp.c deleted file mode 100644 index 27bb829c37..0000000000 --- a/slirp/src/udp.c +++ /dev/null @@ -1,363 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1988, 1990, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94 - * udp_usrreq.c,v 1.4 1994/10/02 17:48:45 phk Exp - */ - -/* - * Changes and additions relating to SLiRP - * Copyright (c) 1995 Danny Gasparovski. - * - * Please read the file COPYRIGHT for the - * terms and conditions of the copyright. - */ - -#include "slirp.h" -#include "ip_icmp.h" - -static uint8_t udp_tos(struct socket *so); - -void -udp_init(Slirp *slirp) -{ - slirp->udb.so_next = slirp->udb.so_prev = &slirp->udb; - slirp->udp_last_so = &slirp->udb; -} - -void udp_cleanup(Slirp *slirp) -{ - while (slirp->udb.so_next != &slirp->udb) { - udp_detach(slirp->udb.so_next); - } -} - -/* m->m_data points at ip packet header - * m->m_len length ip packet - * ip->ip_len length data (IPDU) - */ -void -udp_input(register struct mbuf *m, int iphlen) -{ - Slirp *slirp = m->slirp; - register struct ip *ip; - register struct udphdr *uh; - int len; - struct ip save_ip; - struct socket *so; - struct sockaddr_storage lhost; - struct sockaddr_in *lhost4; - - DEBUG_CALL("udp_input"); - DEBUG_ARG("m = %p", m); - DEBUG_ARG("iphlen = %d", iphlen); - - /* - * Strip IP options, if any; should skip this, - * make available to user, and use on returned packets, - * but we don't yet have a way to check the checksum - * with options still present. - */ - if(iphlen > sizeof(struct ip)) { - ip_stripoptions(m, (struct mbuf *)0); - iphlen = sizeof(struct ip); - } - - /* - * Get IP and UDP header together in first mbuf. - */ - ip = mtod(m, struct ip *); - uh = (struct udphdr *)((char *)ip + iphlen); - - /* - * Make mbuf data length reflect UDP length. - * If not enough data to reflect UDP length, drop. - */ - len = ntohs((uint16_t)uh->uh_ulen); - - if (ip->ip_len != len) { - if (len > ip->ip_len) { - goto bad; - } - m_adj(m, len - ip->ip_len); - ip->ip_len = len; - } - - /* - * Save a copy of the IP header in case we want restore it - * for sending an ICMP error message in response. - */ - save_ip = *ip; - save_ip.ip_len+= iphlen; /* tcp_input subtracts this */ - - /* - * Checksum extended UDP header and data. - */ - if (uh->uh_sum) { - memset(&((struct ipovly *)ip)->ih_mbuf, 0, sizeof(struct mbuf_ptr)); - ((struct ipovly *)ip)->ih_x1 = 0; - ((struct ipovly *)ip)->ih_len = uh->uh_ulen; - if(cksum(m, len + sizeof(struct ip))) { - goto bad; - } - } - - lhost.ss_family = AF_INET; - lhost4 = (struct sockaddr_in *) &lhost; - lhost4->sin_addr = ip->ip_src; - lhost4->sin_port = uh->uh_sport; - - /* - * handle DHCP/BOOTP - */ - if (ntohs(uh->uh_dport) == BOOTP_SERVER && - (ip->ip_dst.s_addr == slirp->vhost_addr.s_addr || - ip->ip_dst.s_addr == 0xffffffff)) { - bootp_input(m); - goto bad; - } - - /* - * handle TFTP - */ - if (ntohs(uh->uh_dport) == TFTP_SERVER && - ip->ip_dst.s_addr == slirp->vhost_addr.s_addr) { - m->m_data += iphlen; - m->m_len -= iphlen; - tftp_input(&lhost, m); - m->m_data -= iphlen; - m->m_len += iphlen; - goto bad; - } - - if (slirp->restricted) { - goto bad; - } - - /* - * Locate pcb for datagram. - */ - so = solookup(&slirp->udp_last_so, &slirp->udb, &lhost, NULL); - - if (so == NULL) { - /* - * If there's no socket for this packet, - * create one - */ - so = socreate(slirp); - if (udp_attach(so, AF_INET) == -1) { - DEBUG_MISC(" udp_attach errno = %d-%s", errno, strerror(errno)); - sofree(so); - goto bad; - } - - /* - * Setup fields - */ - so->so_lfamily = AF_INET; - so->so_laddr = ip->ip_src; - so->so_lport = uh->uh_sport; - - if ((so->so_iptos = udp_tos(so)) == 0) - so->so_iptos = ip->ip_tos; - - /* - * XXXXX Here, check if it's in udpexec_list, - * and if it is, do the fork_exec() etc. - */ - } - - so->so_ffamily = AF_INET; - so->so_faddr = ip->ip_dst; /* XXX */ - so->so_fport = uh->uh_dport; /* XXX */ - - iphlen += sizeof(struct udphdr); - m->m_len -= iphlen; - m->m_data += iphlen; - - /* - * Now we sendto() the packet. - */ - if(sosendto(so,m) == -1) { - m->m_len += iphlen; - m->m_data -= iphlen; - *ip=save_ip; - DEBUG_MISC("udp tx errno = %d-%s", errno, strerror(errno)); - icmp_send_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, 0, - strerror(errno)); - goto bad; - } - - m_free(so->so_m); /* used for ICMP if error on sorecvfrom */ - - /* restore the orig mbuf packet */ - m->m_len += iphlen; - m->m_data -= iphlen; - *ip=save_ip; - so->so_m=m; /* ICMP backup */ - - return; -bad: - m_free(m); -} - -int udp_output(struct socket *so, struct mbuf *m, - struct sockaddr_in *saddr, struct sockaddr_in *daddr, - int iptos) -{ - register struct udpiphdr *ui; - int error = 0; - - DEBUG_CALL("udp_output"); - DEBUG_ARG("so = %p", so); - DEBUG_ARG("m = %p", m); - DEBUG_ARG("saddr = %s", inet_ntoa(saddr->sin_addr)); - DEBUG_ARG("daddr = %s", inet_ntoa(daddr->sin_addr)); - - /* - * Adjust for header - */ - m->m_data -= sizeof(struct udpiphdr); - m->m_len += sizeof(struct udpiphdr); - - /* - * Fill in mbuf with extended UDP header - * and addresses and length put into network format. - */ - ui = mtod(m, struct udpiphdr *); - memset(&ui->ui_i.ih_mbuf, 0 , sizeof(struct mbuf_ptr)); - ui->ui_x1 = 0; - ui->ui_pr = IPPROTO_UDP; - ui->ui_len = htons(m->m_len - sizeof(struct ip)); - /* XXXXX Check for from-one-location sockets, or from-any-location sockets */ - ui->ui_src = saddr->sin_addr; - ui->ui_dst = daddr->sin_addr; - ui->ui_sport = saddr->sin_port; - ui->ui_dport = daddr->sin_port; - ui->ui_ulen = ui->ui_len; - - /* - * Stuff checksum and output datagram. - */ - ui->ui_sum = 0; - if ((ui->ui_sum = cksum(m, m->m_len)) == 0) - ui->ui_sum = 0xffff; - ((struct ip *)ui)->ip_len = m->m_len; - - ((struct ip *)ui)->ip_ttl = IPDEFTTL; - ((struct ip *)ui)->ip_tos = iptos; - - error = ip_output(so, m); - - return (error); -} - -int -udp_attach(struct socket *so, unsigned short af) -{ - so->s = slirp_socket(af, SOCK_DGRAM, 0); - if (so->s != -1) { - so->so_expire = curtime + SO_EXPIRE; - insque(so, &so->slirp->udb); - } - return(so->s); -} - -void -udp_detach(struct socket *so) -{ - so->slirp->cb->unregister_poll_fd(so->s, so->slirp->opaque); - closesocket(so->s); - sofree(so); -} - -static const struct tos_t udptos[] = { - {0, 53, IPTOS_LOWDELAY, 0}, /* DNS */ - {0, 0, 0, 0} -}; - -static uint8_t -udp_tos(struct socket *so) -{ - int i = 0; - - while(udptos[i].tos) { - if ((udptos[i].fport && ntohs(so->so_fport) == udptos[i].fport) || - (udptos[i].lport && ntohs(so->so_lport) == udptos[i].lport)) { - so->so_emu = udptos[i].emu; - return udptos[i].tos; - } - i++; - } - - return 0; -} - -struct socket * -udp_listen(Slirp *slirp, uint32_t haddr, unsigned hport, uint32_t laddr, - unsigned lport, int flags) -{ - /* TODO: IPv6 */ - struct sockaddr_in addr; - struct socket *so; - socklen_t addrlen = sizeof(struct sockaddr_in); - - so = socreate(slirp); - so->s = slirp_socket(AF_INET,SOCK_DGRAM,0); - if (so->s < 0) { - sofree(so); - return NULL; - } - so->so_expire = curtime + SO_EXPIRE; - insque(so, &slirp->udb); - - addr.sin_family = AF_INET; - addr.sin_addr.s_addr = haddr; - addr.sin_port = hport; - - if (bind(so->s,(struct sockaddr *)&addr, addrlen) < 0) { - udp_detach(so); - return NULL; - } - slirp_socket_set_fast_reuse(so->s); - - getsockname(so->s,(struct sockaddr *)&addr,&addrlen); - so->fhost.sin = addr; - sotranslate_accept(so); - so->so_lfamily = AF_INET; - so->so_lport = lport; - so->so_laddr.s_addr = laddr; - if (flags != SS_FACCEPTONCE) - so->so_expire = 0; - - so->so_state &= SS_PERSISTENT_MASK; - so->so_state |= SS_ISFCONNECTED | flags; - - return so; -} diff --git a/slirp/src/udp.h b/slirp/src/udp.h deleted file mode 100644 index 29c0297179..0000000000 --- a/slirp/src/udp.h +++ /dev/null @@ -1,92 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 1982, 1986, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)udp.h 8.1 (Berkeley) 6/10/93 - * udp.h,v 1.3 1994/08/21 05:27:41 paul Exp - */ - -#ifndef UDP_H -#define UDP_H - -#define UDP_TTL 0x60 -#define UDP_UDPDATALEN 16192 - -/* - * Udp protocol header. - * Per RFC 768, September, 1981. - */ -struct udphdr { - uint16_t uh_sport; /* source port */ - uint16_t uh_dport; /* destination port */ - int16_t uh_ulen; /* udp length */ - uint16_t uh_sum; /* udp checksum */ -}; - -/* - * UDP kernel structures and variables. - */ -struct udpiphdr { - struct ipovly ui_i; /* overlaid ip structure */ - struct udphdr ui_u; /* udp header */ -}; -#define ui_mbuf ui_i.ih_mbuf.mptr -#define ui_x1 ui_i.ih_x1 -#define ui_pr ui_i.ih_pr -#define ui_len ui_i.ih_len -#define ui_src ui_i.ih_src -#define ui_dst ui_i.ih_dst -#define ui_sport ui_u.uh_sport -#define ui_dport ui_u.uh_dport -#define ui_ulen ui_u.uh_ulen -#define ui_sum ui_u.uh_sum - -/* - * Names for UDP sysctl objects - */ -#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ -#define UDPCTL_MAXID 2 - -struct mbuf; - -void udp_init(Slirp *); -void udp_cleanup(Slirp *); -void udp_input(register struct mbuf *, int); -int udp_attach(struct socket *, unsigned short af); -void udp_detach(struct socket *); -struct socket * udp_listen(Slirp *, uint32_t, unsigned, uint32_t, unsigned, - int); -int udp_output(struct socket *so, struct mbuf *m, - struct sockaddr_in *saddr, struct sockaddr_in *daddr, - int iptos); - -void udp6_input(register struct mbuf *); -int udp6_output(struct socket *so, struct mbuf *m, - struct sockaddr_in6 *saddr, struct sockaddr_in6 *daddr); - -#endif diff --git a/slirp/src/udp6.c b/slirp/src/udp6.c deleted file mode 100644 index bfcc7ec6fa..0000000000 --- a/slirp/src/udp6.c +++ /dev/null @@ -1,173 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 2013 - * Guillaume Subiron - */ - -#include "slirp.h" -#include "udp.h" -#include "dhcpv6.h" - -void udp6_input(struct mbuf *m) -{ - Slirp *slirp = m->slirp; - struct ip6 *ip, save_ip; - struct udphdr *uh; - int iphlen = sizeof(struct ip6); - int len; - struct socket *so; - struct sockaddr_in6 lhost; - - DEBUG_CALL("udp6_input"); - DEBUG_ARG("m = %p", m); - - if (slirp->restricted) { - goto bad; - } - - ip = mtod(m, struct ip6 *); - m->m_len -= iphlen; - m->m_data += iphlen; - uh = mtod(m, struct udphdr *); - m->m_len += iphlen; - m->m_data -= iphlen; - - if (ip6_cksum(m)) { - goto bad; - } - - len = ntohs((uint16_t)uh->uh_ulen); - - /* - * Make mbuf data length reflect UDP length. - * If not enough data to reflect UDP length, drop. - */ - if (ntohs(ip->ip_pl) != len) { - if (len > ntohs(ip->ip_pl)) { - goto bad; - } - m_adj(m, len - ntohs(ip->ip_pl)); - ip->ip_pl = htons(len); - } - - /* - * Save a copy of the IP header in case we want restore it - * for sending an ICMP error message in response. - */ - save_ip = *ip; - - /* Locate pcb for datagram. */ - lhost.sin6_family = AF_INET6; - lhost.sin6_addr = ip->ip_src; - lhost.sin6_port = uh->uh_sport; - - /* handle DHCPv6 */ - if (ntohs(uh->uh_dport) == DHCPV6_SERVER_PORT && - (in6_equal(&ip->ip_dst, &slirp->vhost_addr6) || - in6_dhcp_multicast(&ip->ip_dst))) { - m->m_data += iphlen; - m->m_len -= iphlen; - dhcpv6_input(&lhost, m); - m->m_data -= iphlen; - m->m_len += iphlen; - goto bad; - } - - /* handle TFTP */ - if (ntohs(uh->uh_dport) == TFTP_SERVER && - !memcmp(ip->ip_dst.s6_addr, slirp->vhost_addr6.s6_addr, 16)) { - m->m_data += iphlen; - m->m_len -= iphlen; - tftp_input((struct sockaddr_storage *)&lhost, m); - m->m_data -= iphlen; - m->m_len += iphlen; - goto bad; - } - - so = solookup(&slirp->udp_last_so, &slirp->udb, - (struct sockaddr_storage *) &lhost, NULL); - - if (so == NULL) { - /* If there's no socket for this packet, create one. */ - so = socreate(slirp); - if (udp_attach(so, AF_INET6) == -1) { - DEBUG_MISC(" udp6_attach errno = %d-%s", errno, strerror(errno)); - sofree(so); - goto bad; - } - - /* Setup fields */ - so->so_lfamily = AF_INET6; - so->so_laddr6 = ip->ip_src; - so->so_lport6 = uh->uh_sport; - } - - so->so_ffamily = AF_INET6; - so->so_faddr6 = ip->ip_dst; /* XXX */ - so->so_fport6 = uh->uh_dport; /* XXX */ - - iphlen += sizeof(struct udphdr); - m->m_len -= iphlen; - m->m_data += iphlen; - - /* - * Now we sendto() the packet. - */ - if (sosendto(so, m) == -1) { - m->m_len += iphlen; - m->m_data -= iphlen; - *ip = save_ip; - DEBUG_MISC("udp tx errno = %d-%s", errno, strerror(errno)); - icmp6_send_error(m, ICMP6_UNREACH, ICMP6_UNREACH_NO_ROUTE); - goto bad; - } - - m_free(so->so_m); /* used for ICMP if error on sorecvfrom */ - - /* restore the orig mbuf packet */ - m->m_len += iphlen; - m->m_data -= iphlen; - *ip = save_ip; - so->so_m = m; - - return; -bad: - m_free(m); -} - -int udp6_output(struct socket *so, struct mbuf *m, - struct sockaddr_in6 *saddr, struct sockaddr_in6 *daddr) -{ - struct ip6 *ip; - struct udphdr *uh; - - DEBUG_CALL("udp6_output"); - DEBUG_ARG("so = %p", so); - DEBUG_ARG("m = %p", m); - - /* adjust for header */ - m->m_data -= sizeof(struct udphdr); - m->m_len += sizeof(struct udphdr); - uh = mtod(m, struct udphdr *); - m->m_data -= sizeof(struct ip6); - m->m_len += sizeof(struct ip6); - ip = mtod(m, struct ip6 *); - - /* Build IP header */ - ip->ip_pl = htons(m->m_len - sizeof(struct ip6)); - ip->ip_nh = IPPROTO_UDP; - ip->ip_src = saddr->sin6_addr; - ip->ip_dst = daddr->sin6_addr; - - /* Build UDP header */ - uh->uh_sport = saddr->sin6_port; - uh->uh_dport = daddr->sin6_port; - uh->uh_ulen = ip->ip_pl; - uh->uh_sum = 0; - uh->uh_sum = ip6_cksum(m); - if (uh->uh_sum == 0) { - uh->uh_sum = 0xffff; - } - - return ip6_output(so, m, 0); -} diff --git a/slirp/src/util.c b/slirp/src/util.c deleted file mode 100644 index 60bb200801..0000000000 --- a/slirp/src/util.c +++ /dev/null @@ -1,368 +0,0 @@ -/* SPDX-License-Identifier: MIT */ -/* - * util.c (mostly based on QEMU os-win32.c) - * - * Copyright (c) 2003-2008 Fabrice Bellard - * Copyright (c) 2010-2016 Red Hat, Inc. - * - * QEMU library functions for win32 which are shared between QEMU and - * the QEMU tools. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "util.h" - -#include <glib.h> -#include <fcntl.h> -#include <stdint.h> - -#if defined(_WIN32) -int slirp_inet_aton(const char *cp, struct in_addr *ia) -{ - uint32_t addr = inet_addr(cp); - if (addr == 0xffffffff) { - return 0; - } - ia->s_addr = addr; - return 1; -} -#endif - -void slirp_set_nonblock(int fd) -{ -#ifndef _WIN32 - int f; - f = fcntl(fd, F_GETFL); - assert(f != -1); - f = fcntl(fd, F_SETFL, f | O_NONBLOCK); - assert(f != -1); -#else - unsigned long opt = 1; - ioctlsocket(fd, FIONBIO, &opt); -#endif -} - -static void slirp_set_cloexec(int fd) -{ -#ifndef _WIN32 - int f; - f = fcntl(fd, F_GETFD); - assert(f != -1); - f = fcntl(fd, F_SETFD, f | FD_CLOEXEC); - assert(f != -1); -#endif -} - -/* - * Opens a socket with FD_CLOEXEC set - */ -int slirp_socket(int domain, int type, int protocol) -{ - int ret; - -#ifdef SOCK_CLOEXEC - ret = socket(domain, type | SOCK_CLOEXEC, protocol); - if (ret != -1 || errno != EINVAL) { - return ret; - } -#endif - ret = socket(domain, type, protocol); - if (ret >= 0) { - slirp_set_cloexec(ret); - } - - return ret; -} - -#ifdef _WIN32 -static int socket_error(void) -{ - switch (WSAGetLastError()) { - case 0: - return 0; - case WSAEINTR: - return EINTR; - case WSAEINVAL: - return EINVAL; - case WSA_INVALID_HANDLE: - return EBADF; - case WSA_NOT_ENOUGH_MEMORY: - return ENOMEM; - case WSA_INVALID_PARAMETER: - return EINVAL; - case WSAENAMETOOLONG: - return ENAMETOOLONG; - case WSAENOTEMPTY: - return ENOTEMPTY; - case WSAEWOULDBLOCK: - /* not using EWOULDBLOCK as we don't want code to have - * to check both EWOULDBLOCK and EAGAIN */ - return EAGAIN; - case WSAEINPROGRESS: - return EINPROGRESS; - case WSAEALREADY: - return EALREADY; - case WSAENOTSOCK: - return ENOTSOCK; - case WSAEDESTADDRREQ: - return EDESTADDRREQ; - case WSAEMSGSIZE: - return EMSGSIZE; - case WSAEPROTOTYPE: - return EPROTOTYPE; - case WSAENOPROTOOPT: - return ENOPROTOOPT; - case WSAEPROTONOSUPPORT: - return EPROTONOSUPPORT; - case WSAEOPNOTSUPP: - return EOPNOTSUPP; - case WSAEAFNOSUPPORT: - return EAFNOSUPPORT; - case WSAEADDRINUSE: - return EADDRINUSE; - case WSAEADDRNOTAVAIL: - return EADDRNOTAVAIL; - case WSAENETDOWN: - return ENETDOWN; - case WSAENETUNREACH: - return ENETUNREACH; - case WSAENETRESET: - return ENETRESET; - case WSAECONNABORTED: - return ECONNABORTED; - case WSAECONNRESET: - return ECONNRESET; - case WSAENOBUFS: - return ENOBUFS; - case WSAEISCONN: - return EISCONN; - case WSAENOTCONN: - return ENOTCONN; - case WSAETIMEDOUT: - return ETIMEDOUT; - case WSAECONNREFUSED: - return ECONNREFUSED; - case WSAELOOP: - return ELOOP; - case WSAEHOSTUNREACH: - return EHOSTUNREACH; - default: - return EIO; - } -} - -#undef ioctlsocket -int slirp_ioctlsocket_wrap(int fd, int req, void *val) -{ - int ret; - ret = ioctlsocket(fd, req, val); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef closesocket -int slirp_closesocket_wrap(int fd) -{ - int ret; - ret = closesocket(fd); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef connect -int slirp_connect_wrap(int sockfd, const struct sockaddr *addr, int addrlen) -{ - int ret; - ret = connect(sockfd, addr, addrlen); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef listen -int slirp_listen_wrap(int sockfd, int backlog) -{ - int ret; - ret = listen(sockfd, backlog); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef bind -int slirp_bind_wrap(int sockfd, const struct sockaddr *addr, int addrlen) -{ - int ret; - ret = bind(sockfd, addr, addrlen); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef socket -int slirp_socket_wrap(int domain, int type, int protocol) -{ - int ret; - ret = socket(domain, type, protocol); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef accept -int slirp_accept_wrap(int sockfd, struct sockaddr *addr, int *addrlen) -{ - int ret; - ret = accept(sockfd, addr, addrlen); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef shutdown -int slirp_shutdown_wrap(int sockfd, int how) -{ - int ret; - ret = shutdown(sockfd, how); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef getsockopt -int slirp_getsockopt_wrap(int sockfd, int level, int optname, - void *optval, int *optlen) -{ - int ret; - ret = getsockopt(sockfd, level, optname, optval, optlen); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef setsockopt -int slirp_setsockopt_wrap(int sockfd, int level, int optname, - const void *optval, int optlen) -{ - int ret; - ret = setsockopt(sockfd, level, optname, optval, optlen); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef getpeername -int slirp_getpeername_wrap(int sockfd, struct sockaddr *addr, - int *addrlen) -{ - int ret; - ret = getpeername(sockfd, addr, addrlen); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef getsockname -int slirp_getsockname_wrap(int sockfd, struct sockaddr *addr, - int *addrlen) -{ - int ret; - ret = getsockname(sockfd, addr, addrlen); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef send -ssize_t slirp_send_wrap(int sockfd, const void *buf, size_t len, int flags) -{ - int ret; - ret = send(sockfd, buf, len, flags); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef sendto -ssize_t slirp_sendto_wrap(int sockfd, const void *buf, size_t len, int flags, - const struct sockaddr *addr, int addrlen) -{ - int ret; - ret = sendto(sockfd, buf, len, flags, addr, addrlen); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef recv -ssize_t slirp_recv_wrap(int sockfd, void *buf, size_t len, int flags) -{ - int ret; - ret = recv(sockfd, buf, len, flags); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} - -#undef recvfrom -ssize_t slirp_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags, - struct sockaddr *addr, int *addrlen) -{ - int ret; - ret = recvfrom(sockfd, buf, len, flags, addr, addrlen); - if (ret < 0) { - errno = socket_error(); - } - return ret; -} -#endif /* WIN32 */ - -void slirp_pstrcpy(char *buf, int buf_size, const char *str) -{ - int c; - char *q = buf; - - if (buf_size <= 0) - return; - - for(;;) { - c = *str++; - if (c == 0 || q >= buf + buf_size - 1) - break; - *q++ = c; - } - *q = '\0'; -} diff --git a/slirp/src/util.h b/slirp/src/util.h deleted file mode 100644 index 01f1e0e068..0000000000 --- a/slirp/src/util.h +++ /dev/null @@ -1,175 +0,0 @@ -/* SPDX-License-Identifier: MIT */ -/* - * Copyright (c) 2003-2008 Fabrice Bellard - * Copyright (c) 2010-2019 Red Hat, Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#ifndef UTIL_H_ -#define UTIL_H_ - -#include <stdlib.h> -#include <stdio.h> -#include <assert.h> -#include <errno.h> -#include <unistd.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <unistd.h> -#include <inttypes.h> - -#ifdef _WIN32 -#include <winsock2.h> -#include <windows.h> -#else -#include <sys/socket.h> -#include <netinet/tcp.h> -#include <netinet/in.h> -#endif - -#if defined(_WIN32) -# define SLIRP_PACKED __attribute__((gcc_struct, packed)) -#else -# define SLIRP_PACKED __attribute__((packed)) -#endif - -#ifndef DIV_ROUND_UP -#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) -#endif - -#ifndef container_of -#define container_of(ptr, type, member) __extension__ ({ \ - void *__mptr = (void *)(ptr); \ - ((type *)(__mptr - offsetof(type, member))); }) -#endif - -#if defined(_WIN32) /* CONFIG_IOVEC */ -# if !defined(IOV_MAX) /* XXX: to avoid duplicate with QEMU osdep.h */ -struct iovec { - void *iov_base; - size_t iov_len; -}; -# endif -#else -#include <sys/uio.h> -#endif - -#define SCALE_MS 1000000 - -#define ETH_ALEN 6 -#define ETH_HLEN 14 -#define ETH_P_IP (0x0800) /* Internet Protocol packet */ -#define ETH_P_ARP (0x0806) /* Address Resolution packet */ -#define ETH_P_IPV6 (0x86dd) -#define ETH_P_VLAN (0x8100) -#define ETH_P_DVLAN (0x88a8) -#define ETH_P_NCSI (0x88f8) -#define ETH_P_UNKNOWN (0xffff) - -/* FIXME: remove me when made standalone */ -#ifdef _WIN32 -#undef accept -#undef bind -#undef closesocket -#undef connect -#undef getpeername -#undef getsockname -#undef getsockopt -#undef ioctlsocket -#undef listen -#undef recv -#undef recvfrom -#undef send -#undef sendto -#undef setsockopt -#undef shutdown -#undef socket -#endif - -#ifdef _WIN32 -#define connect slirp_connect_wrap -int slirp_connect_wrap(int fd, const struct sockaddr *addr, int addrlen); -#define listen slirp_listen_wrap -int slirp_listen_wrap(int fd, int backlog); -#define bind slirp_bind_wrap -int slirp_bind_wrap(int fd, const struct sockaddr *addr, int addrlen); -#define socket slirp_socket_wrap -int slirp_socket_wrap(int domain, int type, int protocol); -#define accept slirp_accept_wrap -int slirp_accept_wrap(int fd, struct sockaddr *addr, int *addrlen); -#define shutdown slirp_shutdown_wrap -int slirp_shutdown_wrap(int fd, int how); -#define getpeername slirp_getpeername_wrap -int slirp_getpeername_wrap(int fd, struct sockaddr *addr, int *addrlen); -#define getsockname slirp_getsockname_wrap -int slirp_getsockname_wrap(int fd, struct sockaddr *addr, int *addrlen); -#define send slirp_send_wrap -ssize_t slirp_send_wrap(int fd, const void *buf, size_t len, int flags); -#define sendto slirp_sendto_wrap -ssize_t slirp_sendto_wrap(int fd, const void *buf, size_t len, int flags, - const struct sockaddr *dest_addr, int addrlen); -#define recv slirp_recv_wrap -ssize_t slirp_recv_wrap(int fd, void *buf, size_t len, int flags); -#define recvfrom slirp_recvfrom_wrap -ssize_t slirp_recvfrom_wrap(int fd, void *buf, size_t len, int flags, - struct sockaddr *src_addr, int *addrlen); -#define closesocket slirp_closesocket_wrap -int slirp_closesocket_wrap(int fd); -#define ioctlsocket slirp_ioctlsocket_wrap -int slirp_ioctlsocket_wrap(int fd, int req, void *val); -#define getsockopt slirp_getsockopt_wrap -int slirp_getsockopt_wrap(int sockfd, int level, int optname, - void *optval, int *optlen); -#define setsockopt slirp_setsockopt_wrap -int slirp_setsockopt_wrap(int sockfd, int level, int optname, - const void *optval, int optlen); -#define inet_aton slirp_inet_aton -int slirp_inet_aton(const char *cp, struct in_addr *ia); -#else -#define closesocket(s) close(s) -#define ioctlsocket(s, r, v) ioctl(s, r, v) -#endif - -int slirp_socket(int domain, int type, int protocol); -void slirp_set_nonblock(int fd); - -static inline int slirp_socket_set_nodelay(int fd) -{ - int v = 1; - return setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &v, sizeof(v)); -} - -static inline int slirp_socket_set_fast_reuse(int fd) -{ -#ifndef _WIN32 - int v = 1; - return setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v)); -#else - /* Enabling the reuse of an endpoint that was used by a socket still in - * TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows - * fast reuse is the default and SO_REUSEADDR does strange things. So we - * don't have to do anything here. More info can be found at: - * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */ - return 0; -#endif -} - -void slirp_pstrcpy(char *buf, int buf_size, const char *str); - -#endif diff --git a/slirp/src/vmstate.c b/slirp/src/vmstate.c deleted file mode 100644 index 43bb3ebc6f..0000000000 --- a/slirp/src/vmstate.c +++ /dev/null @@ -1,441 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * VMState interpreter - * - * Copyright (c) 2009-2018 Red Hat Inc - * - * Authors: - * Juan Quintela <quintela@redhat.com> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * 2. Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * - * 3. Neither the name of the copyright holder nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#include <assert.h> -#include <errno.h> -#include <string.h> -#include <glib.h> - -#include "stream.h" -#include "vmstate.h" - -static int get_nullptr(SlirpIStream *f, void *pv, size_t size, - const VMStateField *field) -{ - if (slirp_istream_read_u8(f) == VMS_NULLPTR_MARKER) { - return 0; - } - g_warning("vmstate: get_nullptr expected VMS_NULLPTR_MARKER"); - return -EINVAL; -} - -static int put_nullptr(SlirpOStream *f, void *pv, size_t size, - const VMStateField *field) - -{ - if (pv == NULL) { - slirp_ostream_write_u8(f, VMS_NULLPTR_MARKER); - return 0; - } - g_warning("vmstate: put_nullptr must be called with pv == NULL"); - return -EINVAL; -} - -const VMStateInfo slirp_vmstate_info_nullptr = { - .name = "uint64", - .get = get_nullptr, - .put = put_nullptr, -}; - -/* 8 bit unsigned int */ - -static int get_uint8(SlirpIStream *f, void *pv, size_t size, const VMStateField *field) -{ - uint8_t *v = pv; - *v = slirp_istream_read_u8(f); - return 0; -} - -static int put_uint8(SlirpOStream *f, void *pv, size_t size, const VMStateField *field) -{ - uint8_t *v = pv; - slirp_ostream_write_u8(f, *v); - return 0; -} - -const VMStateInfo slirp_vmstate_info_uint8 = { - .name = "uint8", - .get = get_uint8, - .put = put_uint8, -}; - -/* 16 bit unsigned int */ - -static int get_uint16(SlirpIStream *f, void *pv, size_t size, - const VMStateField *field) -{ - uint16_t *v = pv; - *v = slirp_istream_read_u16(f); - return 0; -} - -static int put_uint16(SlirpOStream *f, void *pv, size_t size, - const VMStateField *field) -{ - uint16_t *v = pv; - slirp_ostream_write_u16(f, *v); - return 0; -} - -const VMStateInfo slirp_vmstate_info_uint16 = { - .name = "uint16", - .get = get_uint16, - .put = put_uint16, -}; - -/* 32 bit unsigned int */ - -static int get_uint32(SlirpIStream *f, void *pv, size_t size, - const VMStateField *field) -{ - uint32_t *v = pv; - *v = slirp_istream_read_u32(f); - return 0; -} - -static int put_uint32(SlirpOStream *f, void *pv, size_t size, - const VMStateField *field) -{ - uint32_t *v = pv; - slirp_ostream_write_u32(f, *v); - return 0; -} - -const VMStateInfo slirp_vmstate_info_uint32 = { - .name = "uint32", - .get = get_uint32, - .put = put_uint32, -}; - -/* 16 bit int */ - -static int get_int16(SlirpIStream *f, void *pv, size_t size, const VMStateField *field) -{ - int16_t *v = pv; - *v = slirp_istream_read_i16(f); - return 0; -} - -static int put_int16(SlirpOStream *f, void *pv, size_t size, const VMStateField *field) -{ - int16_t *v = pv; - slirp_ostream_write_i16(f, *v); - return 0; -} - -const VMStateInfo slirp_vmstate_info_int16 = { - .name = "int16", - .get = get_int16, - .put = put_int16, -}; - -/* 32 bit int */ - -static int get_int32(SlirpIStream *f, void *pv, size_t size, const VMStateField *field) -{ - int32_t *v = pv; - *v = slirp_istream_read_i32(f); - return 0; -} - -static int put_int32(SlirpOStream *f, void *pv, size_t size, const VMStateField *field) -{ - int32_t *v = pv; - slirp_ostream_write_i32(f, *v); - return 0; -} - -const VMStateInfo slirp_vmstate_info_int32 = { - .name = "int32", - .get = get_int32, - .put = put_int32, -}; - -/* vmstate_info_tmp, see VMSTATE_WITH_TMP, the idea is that we allocate - * a temporary buffer and the pre_load/pre_save methods in the child vmsd - * copy stuff from the parent into the child and do calculations to fill - * in fields that don't really exist in the parent but need to be in the - * stream. - */ -static int get_tmp(SlirpIStream *f, void *pv, size_t size, const VMStateField *field) -{ - int ret; - const VMStateDescription *vmsd = field->vmsd; - int version_id = field->version_id; - void *tmp = g_malloc(size); - - /* Writes the parent field which is at the start of the tmp */ - *(void **)tmp = pv; - ret = slirp_vmstate_load_state(f, vmsd, tmp, version_id); - g_free(tmp); - return ret; -} - -static int put_tmp(SlirpOStream *f, void *pv, size_t size, const VMStateField *field) -{ - const VMStateDescription *vmsd = field->vmsd; - void *tmp = g_malloc(size); - int ret; - - /* Writes the parent field which is at the start of the tmp */ - *(void **)tmp = pv; - ret = slirp_vmstate_save_state(f, vmsd, tmp); - g_free(tmp); - - return ret; -} - -const VMStateInfo slirp_vmstate_info_tmp = { - .name = "tmp", - .get = get_tmp, - .put = put_tmp, -}; - -/* uint8_t buffers */ - -static int get_buffer(SlirpIStream *f, void *pv, size_t size, - const VMStateField *field) -{ - slirp_istream_read(f, pv, size); - return 0; -} - -static int put_buffer(SlirpOStream *f, void *pv, size_t size, - const VMStateField *field) -{ - slirp_ostream_write(f, pv, size); - return 0; -} - -const VMStateInfo slirp_vmstate_info_buffer = { - .name = "buffer", - .get = get_buffer, - .put = put_buffer, -}; - -static int vmstate_n_elems(void *opaque, const VMStateField *field) -{ - int n_elems = 1; - - if (field->flags & VMS_ARRAY) { - n_elems = field->num; - } else if (field->flags & VMS_VARRAY_INT32) { - n_elems = *(int32_t *)(opaque + field->num_offset); - } else if (field->flags & VMS_VARRAY_UINT32) { - n_elems = *(uint32_t *)(opaque + field->num_offset); - } else if (field->flags & VMS_VARRAY_UINT16) { - n_elems = *(uint16_t *)(opaque + field->num_offset); - } else if (field->flags & VMS_VARRAY_UINT8) { - n_elems = *(uint8_t *)(opaque + field->num_offset); - } - - if (field->flags & VMS_MULTIPLY_ELEMENTS) { - n_elems *= field->num; - } - - return n_elems; -} - -static int vmstate_size(void *opaque, const VMStateField *field) -{ - int size = field->size; - - if (field->flags & VMS_VBUFFER) { - size = *(int32_t *)(opaque + field->size_offset); - if (field->flags & VMS_MULTIPLY) { - size *= field->size; - } - } - - return size; -} - -static int -vmstate_save_state_v(SlirpOStream *f, const VMStateDescription *vmsd, - void *opaque, int version_id) -{ - int ret = 0; - const VMStateField *field = vmsd->fields; - - if (vmsd->pre_save) { - ret = vmsd->pre_save(opaque); - if (ret) { - g_warning("pre-save failed: %s", vmsd->name); - return ret; - } - } - - while (field->name) { - if ((field->field_exists && - field->field_exists(opaque, version_id)) || - (!field->field_exists && - field->version_id <= version_id)) { - void *first_elem = opaque + field->offset; - int i, n_elems = vmstate_n_elems(opaque, field); - int size = vmstate_size(opaque, field); - - if (field->flags & VMS_POINTER) { - first_elem = *(void **)first_elem; - assert(first_elem || !n_elems || !size); - } - for (i = 0; i < n_elems; i++) { - void *curr_elem = first_elem + size * i; - ret = 0; - - if (field->flags & VMS_ARRAY_OF_POINTER) { - assert(curr_elem); - curr_elem = *(void **)curr_elem; - } - if (!curr_elem && size) { - /* if null pointer write placeholder and do not follow */ - assert(field->flags & VMS_ARRAY_OF_POINTER); - ret = slirp_vmstate_info_nullptr.put(f, curr_elem, size, NULL); - } else if (field->flags & VMS_STRUCT) { - ret = slirp_vmstate_save_state(f, field->vmsd, curr_elem); - } else if (field->flags & VMS_VSTRUCT) { - ret = vmstate_save_state_v(f, field->vmsd, curr_elem, - field->struct_version_id); - } else { - ret = field->info->put(f, curr_elem, size, field); - } - if (ret) { - g_warning("Save of field %s/%s failed", - vmsd->name, field->name); - return ret; - } - } - } else { - if (field->flags & VMS_MUST_EXIST) { - g_warning("Output state validation failed: %s/%s", - vmsd->name, field->name); - assert(!(field->flags & VMS_MUST_EXIST)); - } - } - field++; - } - - return 0; -} - -int slirp_vmstate_save_state(SlirpOStream *f, const VMStateDescription *vmsd, - void *opaque) -{ - return vmstate_save_state_v(f, vmsd, opaque, vmsd->version_id); -} - -static void vmstate_handle_alloc(void *ptr, VMStateField *field, void *opaque) -{ - if (field->flags & VMS_POINTER && field->flags & VMS_ALLOC) { - size_t size = vmstate_size(opaque, field); - size *= vmstate_n_elems(opaque, field); - if (size) { - *(void **)ptr = g_malloc(size); - } - } -} - -int slirp_vmstate_load_state(SlirpIStream *f, const VMStateDescription *vmsd, - void *opaque, int version_id) -{ - VMStateField *field = vmsd->fields; - int ret = 0; - - if (version_id > vmsd->version_id) { - g_warning("%s: incoming version_id %d is too new " - "for local version_id %d", - vmsd->name, version_id, vmsd->version_id); - return -EINVAL; - } - if (vmsd->pre_load) { - int ret = vmsd->pre_load(opaque); - if (ret) { - return ret; - } - } - while (field->name) { - if ((field->field_exists && - field->field_exists(opaque, version_id)) || - (!field->field_exists && - field->version_id <= version_id)) { - void *first_elem = opaque + field->offset; - int i, n_elems = vmstate_n_elems(opaque, field); - int size = vmstate_size(opaque, field); - - vmstate_handle_alloc(first_elem, field, opaque); - if (field->flags & VMS_POINTER) { - first_elem = *(void **)first_elem; - assert(first_elem || !n_elems || !size); - } - for (i = 0; i < n_elems; i++) { - void *curr_elem = first_elem + size * i; - - if (field->flags & VMS_ARRAY_OF_POINTER) { - curr_elem = *(void **)curr_elem; - } - if (!curr_elem && size) { - /* if null pointer check placeholder and do not follow */ - assert(field->flags & VMS_ARRAY_OF_POINTER); - ret = slirp_vmstate_info_nullptr.get(f, curr_elem, size, NULL); - } else if (field->flags & VMS_STRUCT) { - ret = slirp_vmstate_load_state(f, field->vmsd, curr_elem, - field->vmsd->version_id); - } else if (field->flags & VMS_VSTRUCT) { - ret = slirp_vmstate_load_state(f, field->vmsd, curr_elem, - field->struct_version_id); - } else { - ret = field->info->get(f, curr_elem, size, field); - } - if (ret < 0) { - g_warning("Failed to load %s:%s", vmsd->name, - field->name); - return ret; - } - } - } else if (field->flags & VMS_MUST_EXIST) { - g_warning("Input validation failed: %s/%s", - vmsd->name, field->name); - return -1; - } - field++; - } - if (vmsd->post_load) { - ret = vmsd->post_load(opaque, version_id); - } - return ret; -} diff --git a/slirp/src/vmstate.h b/slirp/src/vmstate.h deleted file mode 100644 index 44efea7b50..0000000000 --- a/slirp/src/vmstate.h +++ /dev/null @@ -1,409 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * QEMU migration/snapshot declarations - * - * Copyright (c) 2009-2011 Red Hat, Inc. - * - * Original author: Juan Quintela <quintela@redhat.com> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * 2. Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * - * 3. Neither the name of the copyright holder nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#ifndef VMSTATE_H_ -#define VMSTATE_H_ - -#include <unistd.h> -#include <stdint.h> -#include <stdbool.h> -#include "slirp.h" -#include "stream.h" - -#define stringify(s) tostring(s) -#define tostring(s) #s - -typedef struct VMStateInfo VMStateInfo; -typedef struct VMStateDescription VMStateDescription; -typedef struct VMStateField VMStateField; - -int slirp_vmstate_save_state(SlirpOStream *f, const VMStateDescription *vmsd, - void *opaque); -int slirp_vmstate_load_state(SlirpIStream *f, const VMStateDescription *vmsd, - void *opaque, int version_id); - -/* VMStateInfo allows customized migration of objects that don't fit in - * any category in VMStateFlags. Additional information is always passed - * into get and put in terms of field and vmdesc parameters. However - * these two parameters should only be used in cases when customized - * handling is needed, such as QTAILQ. For primitive data types such as - * integer, field and vmdesc parameters should be ignored inside get/put. - */ -struct VMStateInfo { - const char *name; - int (*get)(SlirpIStream *f, void *pv, size_t size, const VMStateField *field); - int (*put)(SlirpOStream *f, void *pv, size_t size, const VMStateField *field); -}; - -enum VMStateFlags { - /* Ignored */ - VMS_SINGLE = 0x001, - - /* The struct member at opaque + VMStateField.offset is a pointer - * to the actual field (e.g. struct a { uint8_t *b; - * }). Dereference the pointer before using it as basis for - * further pointer arithmetic (see e.g. VMS_ARRAY). Does not - * affect the meaning of VMStateField.num_offset or - * VMStateField.size_offset; see VMS_VARRAY* and VMS_VBUFFER for - * those. */ - VMS_POINTER = 0x002, - - /* The field is an array of fixed size. VMStateField.num contains - * the number of entries in the array. The size of each entry is - * given by VMStateField.size and / or opaque + - * VMStateField.size_offset; see VMS_VBUFFER and - * VMS_MULTIPLY. Each array entry will be processed individually - * (VMStateField.info.get()/put() if VMS_STRUCT is not set, - * recursion into VMStateField.vmsd if VMS_STRUCT is set). May not - * be combined with VMS_VARRAY*. */ - VMS_ARRAY = 0x004, - - /* The field is itself a struct, containing one or more - * fields. Recurse into VMStateField.vmsd. Most useful in - * combination with VMS_ARRAY / VMS_VARRAY*, recursing into each - * array entry. */ - VMS_STRUCT = 0x008, - - /* The field is an array of variable size. The int32_t at opaque + - * VMStateField.num_offset contains the number of entries in the - * array. See the VMS_ARRAY description regarding array handling - * in general. May not be combined with VMS_ARRAY or any other - * VMS_VARRAY*. */ - VMS_VARRAY_INT32 = 0x010, - - /* Ignored */ - VMS_BUFFER = 0x020, - - /* The field is a (fixed-size or variable-size) array of pointers - * (e.g. struct a { uint8_t *b[]; }). Dereference each array entry - * before using it. Note: Does not imply any one of VMS_ARRAY / - * VMS_VARRAY*; these need to be set explicitly. */ - VMS_ARRAY_OF_POINTER = 0x040, - - /* The field is an array of variable size. The uint16_t at opaque - * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS) - * contains the number of entries in the array. See the VMS_ARRAY - * description regarding array handling in general. May not be - * combined with VMS_ARRAY or any other VMS_VARRAY*. */ - VMS_VARRAY_UINT16 = 0x080, - - /* The size of the individual entries (a single array entry if - * VMS_ARRAY or any of VMS_VARRAY* are set, or the field itself if - * neither is set) is variable (i.e. not known at compile-time), - * but the same for all entries. Use the int32_t at opaque + - * VMStateField.size_offset (subject to VMS_MULTIPLY) to determine - * the size of each (and every) entry. */ - VMS_VBUFFER = 0x100, - - /* Multiply the entry size given by the int32_t at opaque + - * VMStateField.size_offset (see VMS_VBUFFER description) with - * VMStateField.size to determine the number of bytes to be - * allocated. Only valid in combination with VMS_VBUFFER. */ - VMS_MULTIPLY = 0x200, - - /* The field is an array of variable size. The uint8_t at opaque + - * VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS) - * contains the number of entries in the array. See the VMS_ARRAY - * description regarding array handling in general. May not be - * combined with VMS_ARRAY or any other VMS_VARRAY*. */ - VMS_VARRAY_UINT8 = 0x400, - - /* The field is an array of variable size. The uint32_t at opaque - * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS) - * contains the number of entries in the array. See the VMS_ARRAY - * description regarding array handling in general. May not be - * combined with VMS_ARRAY or any other VMS_VARRAY*. */ - VMS_VARRAY_UINT32 = 0x800, - - /* Fail loading the serialised VM state if this field is missing - * from the input. */ - VMS_MUST_EXIST = 0x1000, - - /* When loading serialised VM state, allocate memory for the - * (entire) field. Only valid in combination with - * VMS_POINTER. Note: Not all combinations with other flags are - * currently supported, e.g. VMS_ALLOC|VMS_ARRAY_OF_POINTER won't - * cause the individual entries to be allocated. */ - VMS_ALLOC = 0x2000, - - /* Multiply the number of entries given by the integer at opaque + - * VMStateField.num_offset (see VMS_VARRAY*) with VMStateField.num - * to determine the number of entries in the array. Only valid in - * combination with one of VMS_VARRAY*. */ - VMS_MULTIPLY_ELEMENTS = 0x4000, - - /* A structure field that is like VMS_STRUCT, but uses - * VMStateField.struct_version_id to tell which version of the - * structure we are referencing to use. */ - VMS_VSTRUCT = 0x8000, -}; - -struct VMStateField { - const char *name; - size_t offset; - size_t size; - size_t start; - int num; - size_t num_offset; - size_t size_offset; - const VMStateInfo *info; - enum VMStateFlags flags; - const VMStateDescription *vmsd; - int version_id; - int struct_version_id; - bool (*field_exists)(void *opaque, int version_id); -}; - -struct VMStateDescription { - const char *name; - int version_id; - int (*pre_load)(void *opaque); - int (*post_load)(void *opaque, int version_id); - int (*pre_save)(void *opaque); - VMStateField *fields; -}; - - -extern const VMStateInfo slirp_vmstate_info_int16; -extern const VMStateInfo slirp_vmstate_info_int32; -extern const VMStateInfo slirp_vmstate_info_uint8; -extern const VMStateInfo slirp_vmstate_info_uint16; -extern const VMStateInfo slirp_vmstate_info_uint32; - -/** Put this in the stream when migrating a null pointer.*/ -#define VMS_NULLPTR_MARKER (0x30U) /* '0' */ -extern const VMStateInfo slirp_vmstate_info_nullptr; - -extern const VMStateInfo slirp_vmstate_info_buffer; -extern const VMStateInfo slirp_vmstate_info_tmp; - -#define type_check_array(t1,t2,n) ((t1(*)[n])0 - (t2*)0) -#define type_check_pointer(t1,t2) ((t1**)0 - (t2*)0) -#define typeof_field(type, field) typeof(((type *)0)->field) -#define type_check(t1,t2) ((t1*)0 - (t2*)0) - -#define vmstate_offset_value(_state, _field, _type) \ - (offsetof(_state, _field) + \ - type_check(_type, typeof_field(_state, _field))) - -#define vmstate_offset_pointer(_state, _field, _type) \ - (offsetof(_state, _field) + \ - type_check_pointer(_type, typeof_field(_state, _field))) - -#define vmstate_offset_array(_state, _field, _type, _num) \ - (offsetof(_state, _field) + \ - type_check_array(_type, typeof_field(_state, _field), _num)) - -#define vmstate_offset_buffer(_state, _field) \ - vmstate_offset_array(_state, _field, uint8_t, \ - sizeof(typeof_field(_state, _field))) - -/* In the macros below, if there is a _version, that means the macro's - * field will be processed only if the version being received is >= - * the _version specified. In general, if you add a new field, you - * would increment the structure's version and put that version - * number into the new field so it would only be processed with the - * new version. - * - * In particular, for VMSTATE_STRUCT() and friends the _version does - * *NOT* pick the version of the sub-structure. It works just as - * specified above. The version of the top-level structure received - * is passed down to all sub-structures. This means that the - * sub-structures must have version that are compatible with all the - * structures that use them. - * - * If you want to specify the version of the sub-structure, use - * VMSTATE_VSTRUCT(), which allows the specific sub-structure version - * to be directly specified. - */ - -#define VMSTATE_SINGLE_TEST(_field, _state, _test, _version, _info, _type) { \ - .name = (stringify(_field)), \ - .version_id = (_version), \ - .field_exists = (_test), \ - .size = sizeof(_type), \ - .info = &(_info), \ - .flags = VMS_SINGLE, \ - .offset = vmstate_offset_value(_state, _field, _type), \ -} - -#define VMSTATE_ARRAY(_field, _state, _num, _version, _info, _type) {\ - .name = (stringify(_field)), \ - .version_id = (_version), \ - .num = (_num), \ - .info = &(_info), \ - .size = sizeof(_type), \ - .flags = VMS_ARRAY, \ - .offset = vmstate_offset_array(_state, _field, _type, _num), \ -} - -#define VMSTATE_STRUCT_TEST(_field, _state, _test, _version, _vmsd, _type) { \ - .name = (stringify(_field)), \ - .version_id = (_version), \ - .field_exists = (_test), \ - .vmsd = &(_vmsd), \ - .size = sizeof(_type), \ - .flags = VMS_STRUCT, \ - .offset = vmstate_offset_value(_state, _field, _type), \ -} - -#define VMSTATE_STRUCT_POINTER_V(_field, _state, _version, _vmsd, _type) { \ - .name = (stringify(_field)), \ - .version_id = (_version), \ - .vmsd = &(_vmsd), \ - .size = sizeof(_type *), \ - .flags = VMS_STRUCT|VMS_POINTER, \ - .offset = vmstate_offset_pointer(_state, _field, _type), \ -} - -#define VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, _test, _version, _vmsd, _type) { \ - .name = (stringify(_field)), \ - .num = (_num), \ - .field_exists = (_test), \ - .version_id = (_version), \ - .vmsd = &(_vmsd), \ - .size = sizeof(_type), \ - .flags = VMS_STRUCT|VMS_ARRAY, \ - .offset = vmstate_offset_array(_state, _field, _type, _num),\ -} - -#define VMSTATE_STATIC_BUFFER(_field, _state, _version, _test, _start, _size) { \ - .name = (stringify(_field)), \ - .version_id = (_version), \ - .field_exists = (_test), \ - .size = (_size - _start), \ - .info = &slirp_vmstate_info_buffer, \ - .flags = VMS_BUFFER, \ - .offset = vmstate_offset_buffer(_state, _field) + _start, \ -} - -#define VMSTATE_VBUFFER_UINT32(_field, _state, _version, _test, _field_size) { \ - .name = (stringify(_field)), \ - .version_id = (_version), \ - .field_exists = (_test), \ - .size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\ - .info = &slirp_vmstate_info_buffer, \ - .flags = VMS_VBUFFER|VMS_POINTER, \ - .offset = offsetof(_state, _field), \ -} - -#define QEMU_BUILD_BUG_ON_STRUCT(x) \ - struct { \ - int:(x) ? -1 : 1; \ - } - -#define QEMU_BUILD_BUG_ON_ZERO(x) (sizeof(QEMU_BUILD_BUG_ON_STRUCT(x)) - \ - sizeof(QEMU_BUILD_BUG_ON_STRUCT(x))) - -/* Allocate a temporary of type 'tmp_type', set tmp->parent to _state - * and execute the vmsd on the temporary. Note that we're working with - * the whole of _state here, not a field within it. - * We compile time check that: - * That _tmp_type contains a 'parent' member that's a pointer to the - * '_state' type - * That the pointer is right at the start of _tmp_type. - */ -#define VMSTATE_WITH_TMP(_state, _tmp_type, _vmsd) { \ - .name = "tmp", \ - .size = sizeof(_tmp_type) + \ - QEMU_BUILD_BUG_ON_ZERO(offsetof(_tmp_type, parent) != 0) + \ - type_check_pointer(_state, \ - typeof_field(_tmp_type, parent)), \ - .vmsd = &(_vmsd), \ - .info = &slirp_vmstate_info_tmp, \ -} - -#define VMSTATE_SINGLE(_field, _state, _version, _info, _type) \ - VMSTATE_SINGLE_TEST(_field, _state, NULL, _version, _info, _type) - -#define VMSTATE_STRUCT(_field, _state, _version, _vmsd, _type) \ - VMSTATE_STRUCT_TEST(_field, _state, NULL, _version, _vmsd, _type) - -#define VMSTATE_STRUCT_POINTER(_field, _state, _vmsd, _type) \ - VMSTATE_STRUCT_POINTER_V(_field, _state, 0, _vmsd, _type) - -#define VMSTATE_STRUCT_ARRAY(_field, _state, _num, _version, _vmsd, _type) \ - VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, NULL, _version, \ - _vmsd, _type) - -#define VMSTATE_INT16_V(_f, _s, _v) \ - VMSTATE_SINGLE(_f, _s, _v, slirp_vmstate_info_int16, int16_t) -#define VMSTATE_INT32_V(_f, _s, _v) \ - VMSTATE_SINGLE(_f, _s, _v, slirp_vmstate_info_int32, int32_t) - -#define VMSTATE_UINT8_V(_f, _s, _v) \ - VMSTATE_SINGLE(_f, _s, _v, slirp_vmstate_info_uint8, uint8_t) -#define VMSTATE_UINT16_V(_f, _s, _v) \ - VMSTATE_SINGLE(_f, _s, _v, slirp_vmstate_info_uint16, uint16_t) -#define VMSTATE_UINT32_V(_f, _s, _v) \ - VMSTATE_SINGLE(_f, _s, _v, slirp_vmstate_info_uint32, uint32_t) - -#define VMSTATE_INT16(_f, _s) \ - VMSTATE_INT16_V(_f, _s, 0) -#define VMSTATE_INT32(_f, _s) \ - VMSTATE_INT32_V(_f, _s, 0) - -#define VMSTATE_UINT8(_f, _s) \ - VMSTATE_UINT8_V(_f, _s, 0) -#define VMSTATE_UINT16(_f, _s) \ - VMSTATE_UINT16_V(_f, _s, 0) -#define VMSTATE_UINT32(_f, _s) \ - VMSTATE_UINT32_V(_f, _s, 0) - -#define VMSTATE_UINT16_TEST(_f, _s, _t) \ - VMSTATE_SINGLE_TEST(_f, _s, _t, 0, slirp_vmstate_info_uint16, uint16_t) - -#define VMSTATE_UINT32_TEST(_f, _s, _t) \ - VMSTATE_SINGLE_TEST(_f, _s, _t, 0, slirp_vmstate_info_uint32, uint32_t) - -#define VMSTATE_INT16_ARRAY_V(_f, _s, _n, _v) \ - VMSTATE_ARRAY(_f, _s, _n, _v, slirp_vmstate_info_int16, int16_t) - -#define VMSTATE_INT16_ARRAY(_f, _s, _n) \ - VMSTATE_INT16_ARRAY_V(_f, _s, _n, 0) - -#define VMSTATE_BUFFER_V(_f, _s, _v) \ - VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, 0, sizeof(typeof_field(_s, _f))) - -#define VMSTATE_BUFFER(_f, _s) \ - VMSTATE_BUFFER_V(_f, _s, 0) - -#define VMSTATE_END_OF_LIST() \ - {} - -#endif |