slirp: move sources to src/ subdirectory

Prepare for making slirp/ a standalone project.

Remove some useless includes while at it.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20190212162524.31504-5-marcandre.lureau@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

1 files changed, 0 insertions, 370 deletions

diff --git a/slirp/bootp.c b/slirp/bootp.c
deleted file mode 100644
index d396849a05..0000000000
--- a/slirp/bootp.c
+++ /dev/null
@@ -1,370 +0,0 @@
-/*
- * 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);
-    }
-}