aboutsummaryrefslogtreecommitdiff
path: root/util/uri.c
diff options
context:
space:
mode:
Diffstat (limited to 'util/uri.c')
-rw-r--r--util/uri.c1466
1 files changed, 0 insertions, 1466 deletions
diff --git a/util/uri.c b/util/uri.c
deleted file mode 100644
index 573174bf47..0000000000
--- a/util/uri.c
+++ /dev/null
@@ -1,1466 +0,0 @@
-/**
- * uri.c: set of generic URI related routines
- *
- * Reference: RFCs 3986, 2732 and 2373
- *
- * Copyright (C) 1998-2003 Daniel Veillard. All Rights Reserved.
- *
- * 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
- * DANIEL VEILLARD 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.
- *
- * Except as contained in this notice, the name of Daniel Veillard shall not
- * be used in advertising or otherwise to promote the sale, use or other
- * dealings in this Software without prior written authorization from him.
- *
- * daniel@veillard.com
- *
- **
- *
- * Copyright (C) 2007, 2009-2010 Red Hat, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library. If not, see <https://www.gnu.org/licenses/>.
- *
- * Authors:
- * Richard W.M. Jones <rjones@redhat.com>
- *
- */
-
-#include "qemu/osdep.h"
-#include "qemu/cutils.h"
-
-#include "qemu/uri.h"
-
-static void uri_clean(URI *uri);
-
-/*
- * Old rule from 2396 used in legacy handling code
- * alpha = lowalpha | upalpha
- */
-#define IS_ALPHA(x) (IS_LOWALPHA(x) || IS_UPALPHA(x))
-
-/*
- * lowalpha = "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" |
- * "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" | "s" | "t" |
- * "u" | "v" | "w" | "x" | "y" | "z"
- */
-
-#define IS_LOWALPHA(x) (((x) >= 'a') && ((x) <= 'z'))
-
-/*
- * upalpha = "A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | "J" |
- * "K" | "L" | "M" | "N" | "O" | "P" | "Q" | "R" | "S" | "T" |
- * "U" | "V" | "W" | "X" | "Y" | "Z"
- */
-#define IS_UPALPHA(x) (((x) >= 'A') && ((x) <= 'Z'))
-
-#ifdef IS_DIGIT
-#undef IS_DIGIT
-#endif
-/*
- * digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"
- */
-#define IS_DIGIT(x) (((x) >= '0') && ((x) <= '9'))
-
-/*
- * alphanum = alpha | digit
- */
-
-#define IS_ALPHANUM(x) (IS_ALPHA(x) || IS_DIGIT(x))
-
-/*
- * mark = "-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")"
- */
-
-#define IS_MARK(x) (((x) == '-') || ((x) == '_') || ((x) == '.') || \
- ((x) == '!') || ((x) == '~') || ((x) == '*') || ((x) == '\'') || \
- ((x) == '(') || ((x) == ')'))
-
-/*
- * unwise = "{" | "}" | "|" | "\" | "^" | "`"
- */
-
-#define IS_UNWISE(p) \
- (((*(p) == '{')) || ((*(p) == '}')) || ((*(p) == '|')) || \
- ((*(p) == '\\')) || ((*(p) == '^')) || ((*(p) == '[')) || \
- ((*(p) == ']')) || ((*(p) == '`')))
-/*
- * reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" | "$" | "," |
- * "[" | "]"
- */
-
-#define IS_RESERVED(x) (((x) == ';') || ((x) == '/') || ((x) == '?') || \
- ((x) == ':') || ((x) == '@') || ((x) == '&') || ((x) == '=') || \
- ((x) == '+') || ((x) == '$') || ((x) == ',') || ((x) == '[') || \
- ((x) == ']'))
-
-/*
- * unreserved = alphanum | mark
- */
-
-#define IS_UNRESERVED(x) (IS_ALPHANUM(x) || IS_MARK(x))
-
-/*
- * Skip to next pointer char, handle escaped sequences
- */
-
-#define NEXT(p) ((*p == '%') ? p += 3 : p++)
-
-/*
- * Productions from the spec.
- *
- * authority = server | reg_name
- * reg_name = 1*( unreserved | escaped | "$" | "," |
- * ";" | ":" | "@" | "&" | "=" | "+" )
- *
- * path = [ abs_path | opaque_part ]
- */
-
-/************************************************************************
- * *
- * RFC 3986 parser *
- * *
- ************************************************************************/
-
-#define ISA_DIGIT(p) ((*(p) >= '0') && (*(p) <= '9'))
-#define ISA_ALPHA(p) (((*(p) >= 'a') && (*(p) <= 'z')) || \
- ((*(p) >= 'A') && (*(p) <= 'Z')))
-#define ISA_HEXDIG(p) \
- (ISA_DIGIT(p) || ((*(p) >= 'a') && (*(p) <= 'f')) || \
- ((*(p) >= 'A') && (*(p) <= 'F')))
-
-/*
- * sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
- * / "*" / "+" / "," / ";" / "="
- */
-#define ISA_SUB_DELIM(p) \
- (((*(p) == '!')) || ((*(p) == '$')) || ((*(p) == '&')) || \
- ((*(p) == '(')) || ((*(p) == ')')) || ((*(p) == '*')) || \
- ((*(p) == '+')) || ((*(p) == ',')) || ((*(p) == ';')) || \
- ((*(p) == '=')) || ((*(p) == '\'')))
-
-/*
- * unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
- */
-#define ISA_UNRESERVED(p) \
- ((ISA_ALPHA(p)) || (ISA_DIGIT(p)) || ((*(p) == '-')) || \
- ((*(p) == '.')) || ((*(p) == '_')) || ((*(p) == '~')))
-
-/*
- * pct-encoded = "%" HEXDIG HEXDIG
- */
-#define ISA_PCT_ENCODED(p) \
- ((*(p) == '%') && (ISA_HEXDIG(p + 1)) && (ISA_HEXDIG(p + 2)))
-
-/*
- * pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
- */
-#define ISA_PCHAR(p) \
- (ISA_UNRESERVED(p) || ISA_PCT_ENCODED(p) || ISA_SUB_DELIM(p) || \
- ((*(p) == ':')) || ((*(p) == '@')))
-
-/**
- * rfc3986_parse_scheme:
- * @uri: pointer to an URI structure
- * @str: pointer to the string to analyze
- *
- * Parse an URI scheme
- *
- * ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_scheme(URI *uri, const char **str)
-{
- const char *cur;
-
- if (str == NULL) {
- return -1;
- }
-
- cur = *str;
- if (!ISA_ALPHA(cur)) {
- return 2;
- }
- cur++;
- while (ISA_ALPHA(cur) || ISA_DIGIT(cur) || (*cur == '+') || (*cur == '-') ||
- (*cur == '.')) {
- cur++;
- }
- if (uri != NULL) {
- g_free(uri->scheme);
- uri->scheme = g_strndup(*str, cur - *str);
- }
- *str = cur;
- return 0;
-}
-
-/**
- * rfc3986_parse_fragment:
- * @uri: pointer to an URI structure
- * @str: pointer to the string to analyze
- *
- * Parse the query part of an URI
- *
- * fragment = *( pchar / "/" / "?" )
- * NOTE: the strict syntax as defined by 3986 does not allow '[' and ']'
- * in the fragment identifier but this is used very broadly for
- * xpointer scheme selection, so we are allowing it here to not break
- * for example all the DocBook processing chains.
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_fragment(URI *uri, const char **str)
-{
- const char *cur;
-
- if (str == NULL) {
- return -1;
- }
-
- cur = *str;
-
- while ((ISA_PCHAR(cur)) || (*cur == '/') || (*cur == '?') ||
- (*cur == '[') || (*cur == ']') ||
- ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) {
- NEXT(cur);
- }
- if (uri != NULL) {
- g_free(uri->fragment);
- if (uri->cleanup & 2) {
- uri->fragment = g_strndup(*str, cur - *str);
- } else {
- uri->fragment = g_uri_unescape_segment(*str, cur, NULL);
- }
- }
- *str = cur;
- return 0;
-}
-
-/**
- * rfc3986_parse_query:
- * @uri: pointer to an URI structure
- * @str: pointer to the string to analyze
- *
- * Parse the query part of an URI
- *
- * query = *uric
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_query(URI *uri, const char **str)
-{
- const char *cur;
-
- if (str == NULL) {
- return -1;
- }
-
- cur = *str;
-
- while ((ISA_PCHAR(cur)) || (*cur == '/') || (*cur == '?') ||
- ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) {
- NEXT(cur);
- }
- if (uri != NULL) {
- g_free(uri->query);
- uri->query = g_strndup(*str, cur - *str);
- }
- *str = cur;
- return 0;
-}
-
-/**
- * rfc3986_parse_port:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse a port part and fills in the appropriate fields
- * of the @uri structure
- *
- * port = *DIGIT
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_port(URI *uri, const char **str)
-{
- const char *cur = *str;
- int port = 0;
-
- if (ISA_DIGIT(cur)) {
- while (ISA_DIGIT(cur)) {
- port = port * 10 + (*cur - '0');
- if (port > 65535) {
- return 1;
- }
- cur++;
- }
- if (uri) {
- uri->port = port;
- }
- *str = cur;
- return 0;
- }
- return 1;
-}
-
-/**
- * rfc3986_parse_user_info:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse a user information part and fill in the appropriate fields
- * of the @uri structure
- *
- * userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_user_info(URI *uri, const char **str)
-{
- const char *cur;
-
- cur = *str;
- while (ISA_UNRESERVED(cur) || ISA_PCT_ENCODED(cur) || ISA_SUB_DELIM(cur) ||
- (*cur == ':')) {
- NEXT(cur);
- }
- if (*cur == '@') {
- if (uri != NULL) {
- g_free(uri->user);
- if (uri->cleanup & 2) {
- uri->user = g_strndup(*str, cur - *str);
- } else {
- uri->user = g_uri_unescape_segment(*str, cur, NULL);
- }
- }
- *str = cur;
- return 0;
- }
- return 1;
-}
-
-/**
- * rfc3986_parse_dec_octet:
- * @str: the string to analyze
- *
- * dec-octet = DIGIT ; 0-9
- * / %x31-39 DIGIT ; 10-99
- * / "1" 2DIGIT ; 100-199
- * / "2" %x30-34 DIGIT ; 200-249
- * / "25" %x30-35 ; 250-255
- *
- * Skip a dec-octet.
- *
- * Returns 0 if found and skipped, 1 otherwise
- */
-static int rfc3986_parse_dec_octet(const char **str)
-{
- const char *cur = *str;
-
- if (!(ISA_DIGIT(cur))) {
- return 1;
- }
- if (!ISA_DIGIT(cur + 1)) {
- cur++;
- } else if ((*cur != '0') && (ISA_DIGIT(cur + 1)) && (!ISA_DIGIT(cur + 2))) {
- cur += 2;
- } else if ((*cur == '1') && (ISA_DIGIT(cur + 1)) && (ISA_DIGIT(cur + 2))) {
- cur += 3;
- } else if ((*cur == '2') && (*(cur + 1) >= '0') && (*(cur + 1) <= '4') &&
- (ISA_DIGIT(cur + 2))) {
- cur += 3;
- } else if ((*cur == '2') && (*(cur + 1) == '5') && (*(cur + 2) >= '0') &&
- (*(cur + 1) <= '5')) {
- cur += 3;
- } else {
- return 1;
- }
- *str = cur;
- return 0;
-}
-/**
- * rfc3986_parse_host:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse an host part and fills in the appropriate fields
- * of the @uri structure
- *
- * host = IP-literal / IPv4address / reg-name
- * IP-literal = "[" ( IPv6address / IPvFuture ) "]"
- * IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
- * reg-name = *( unreserved / pct-encoded / sub-delims )
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_host(URI *uri, const char **str)
-{
- const char *cur = *str;
- const char *host;
-
- host = cur;
- /*
- * IPv6 and future addressing scheme are enclosed between brackets
- */
- if (*cur == '[') {
- cur++;
- while ((*cur != ']') && (*cur != 0)) {
- cur++;
- }
- if (*cur != ']') {
- return 1;
- }
- cur++;
- goto found;
- }
- /*
- * try to parse an IPv4
- */
- if (ISA_DIGIT(cur)) {
- if (rfc3986_parse_dec_octet(&cur) != 0) {
- goto not_ipv4;
- }
- if (*cur != '.') {
- goto not_ipv4;
- }
- cur++;
- if (rfc3986_parse_dec_octet(&cur) != 0) {
- goto not_ipv4;
- }
- if (*cur != '.') {
- goto not_ipv4;
- }
- if (rfc3986_parse_dec_octet(&cur) != 0) {
- goto not_ipv4;
- }
- if (*cur != '.') {
- goto not_ipv4;
- }
- if (rfc3986_parse_dec_octet(&cur) != 0) {
- goto not_ipv4;
- }
- goto found;
- not_ipv4:
- cur = *str;
- }
- /*
- * then this should be a hostname which can be empty
- */
- while (ISA_UNRESERVED(cur) || ISA_PCT_ENCODED(cur) || ISA_SUB_DELIM(cur)) {
- NEXT(cur);
- }
-found:
- if (uri != NULL) {
- g_free(uri->authority);
- uri->authority = NULL;
- g_free(uri->server);
- if (cur != host) {
- if (uri->cleanup & 2) {
- uri->server = g_strndup(host, cur - host);
- } else {
- uri->server = g_uri_unescape_segment(host, cur, NULL);
- }
- } else {
- uri->server = NULL;
- }
- }
- *str = cur;
- return 0;
-}
-
-/**
- * rfc3986_parse_authority:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse an authority part and fills in the appropriate fields
- * of the @uri structure
- *
- * authority = [ userinfo "@" ] host [ ":" port ]
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_authority(URI *uri, const char **str)
-{
- const char *cur;
- int ret;
-
- cur = *str;
- /*
- * try to parse a userinfo and check for the trailing @
- */
- ret = rfc3986_parse_user_info(uri, &cur);
- if ((ret != 0) || (*cur != '@')) {
- cur = *str;
- } else {
- cur++;
- }
- ret = rfc3986_parse_host(uri, &cur);
- if (ret != 0) {
- return ret;
- }
- if (*cur == ':') {
- cur++;
- ret = rfc3986_parse_port(uri, &cur);
- if (ret != 0) {
- return ret;
- }
- }
- *str = cur;
- return 0;
-}
-
-/**
- * rfc3986_parse_segment:
- * @str: the string to analyze
- * @forbid: an optional forbidden character
- * @empty: allow an empty segment
- *
- * Parse a segment and fills in the appropriate fields
- * of the @uri structure
- *
- * segment = *pchar
- * segment-nz = 1*pchar
- * segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" )
- * ; non-zero-length segment without any colon ":"
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_segment(const char **str, char forbid, int empty)
-{
- const char *cur;
-
- cur = *str;
- if (!ISA_PCHAR(cur)) {
- if (empty) {
- return 0;
- }
- return 1;
- }
- while (ISA_PCHAR(cur) && (*cur != forbid)) {
- NEXT(cur);
- }
- *str = cur;
- return 0;
-}
-
-/**
- * rfc3986_parse_path_ab_empty:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse an path absolute or empty and fills in the appropriate fields
- * of the @uri structure
- *
- * path-abempty = *( "/" segment )
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_path_ab_empty(URI *uri, const char **str)
-{
- const char *cur;
- int ret;
-
- cur = *str;
-
- while (*cur == '/') {
- cur++;
- ret = rfc3986_parse_segment(&cur, 0, 1);
- if (ret != 0) {
- return ret;
- }
- }
- if (uri != NULL) {
- g_free(uri->path);
- if (*str != cur) {
- if (uri->cleanup & 2) {
- uri->path = g_strndup(*str, cur - *str);
- } else {
- uri->path = g_uri_unescape_segment(*str, cur, NULL);
- }
- } else {
- uri->path = NULL;
- }
- }
- *str = cur;
- return 0;
-}
-
-/**
- * rfc3986_parse_path_absolute:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse an path absolute and fills in the appropriate fields
- * of the @uri structure
- *
- * path-absolute = "/" [ segment-nz *( "/" segment ) ]
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_path_absolute(URI *uri, const char **str)
-{
- const char *cur;
- int ret;
-
- cur = *str;
-
- if (*cur != '/') {
- return 1;
- }
- cur++;
- ret = rfc3986_parse_segment(&cur, 0, 0);
- if (ret == 0) {
- while (*cur == '/') {
- cur++;
- ret = rfc3986_parse_segment(&cur, 0, 1);
- if (ret != 0) {
- return ret;
- }
- }
- }
- if (uri != NULL) {
- g_free(uri->path);
- if (cur != *str) {
- if (uri->cleanup & 2) {
- uri->path = g_strndup(*str, cur - *str);
- } else {
- uri->path = g_uri_unescape_segment(*str, cur, NULL);
- }
- } else {
- uri->path = NULL;
- }
- }
- *str = cur;
- return 0;
-}
-
-/**
- * rfc3986_parse_path_rootless:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse an path without root and fills in the appropriate fields
- * of the @uri structure
- *
- * path-rootless = segment-nz *( "/" segment )
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_path_rootless(URI *uri, const char **str)
-{
- const char *cur;
- int ret;
-
- cur = *str;
-
- ret = rfc3986_parse_segment(&cur, 0, 0);
- if (ret != 0) {
- return ret;
- }
- while (*cur == '/') {
- cur++;
- ret = rfc3986_parse_segment(&cur, 0, 1);
- if (ret != 0) {
- return ret;
- }
- }
- if (uri != NULL) {
- g_free(uri->path);
- if (cur != *str) {
- if (uri->cleanup & 2) {
- uri->path = g_strndup(*str, cur - *str);
- } else {
- uri->path = g_uri_unescape_segment(*str, cur, NULL);
- }
- } else {
- uri->path = NULL;
- }
- }
- *str = cur;
- return 0;
-}
-
-/**
- * rfc3986_parse_path_no_scheme:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse an path which is not a scheme and fills in the appropriate fields
- * of the @uri structure
- *
- * path-noscheme = segment-nz-nc *( "/" segment )
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_path_no_scheme(URI *uri, const char **str)
-{
- const char *cur;
- int ret;
-
- cur = *str;
-
- ret = rfc3986_parse_segment(&cur, ':', 0);
- if (ret != 0) {
- return ret;
- }
- while (*cur == '/') {
- cur++;
- ret = rfc3986_parse_segment(&cur, 0, 1);
- if (ret != 0) {
- return ret;
- }
- }
- if (uri != NULL) {
- g_free(uri->path);
- if (cur != *str) {
- if (uri->cleanup & 2) {
- uri->path = g_strndup(*str, cur - *str);
- } else {
- uri->path = g_uri_unescape_segment(*str, cur, NULL);
- }
- } else {
- uri->path = NULL;
- }
- }
- *str = cur;
- return 0;
-}
-
-/**
- * rfc3986_parse_hier_part:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse an hierarchical part and fills in the appropriate fields
- * of the @uri structure
- *
- * hier-part = "//" authority path-abempty
- * / path-absolute
- * / path-rootless
- * / path-empty
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_hier_part(URI *uri, const char **str)
-{
- const char *cur;
- int ret;
-
- cur = *str;
-
- if ((*cur == '/') && (*(cur + 1) == '/')) {
- cur += 2;
- ret = rfc3986_parse_authority(uri, &cur);
- if (ret != 0) {
- return ret;
- }
- ret = rfc3986_parse_path_ab_empty(uri, &cur);
- if (ret != 0) {
- return ret;
- }
- *str = cur;
- return 0;
- } else if (*cur == '/') {
- ret = rfc3986_parse_path_absolute(uri, &cur);
- if (ret != 0) {
- return ret;
- }
- } else if (ISA_PCHAR(cur)) {
- ret = rfc3986_parse_path_rootless(uri, &cur);
- if (ret != 0) {
- return ret;
- }
- } else {
- /* path-empty is effectively empty */
- if (uri != NULL) {
- g_free(uri->path);
- uri->path = NULL;
- }
- }
- *str = cur;
- return 0;
-}
-
-/**
- * rfc3986_parse_relative_ref:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse an URI string and fills in the appropriate fields
- * of the @uri structure
- *
- * relative-ref = relative-part [ "?" query ] [ "#" fragment ]
- * relative-part = "//" authority path-abempty
- * / path-absolute
- * / path-noscheme
- * / path-empty
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_relative_ref(URI *uri, const char *str)
-{
- int ret;
-
- if ((*str == '/') && (*(str + 1) == '/')) {
- str += 2;
- ret = rfc3986_parse_authority(uri, &str);
- if (ret != 0) {
- return ret;
- }
- ret = rfc3986_parse_path_ab_empty(uri, &str);
- if (ret != 0) {
- return ret;
- }
- } else if (*str == '/') {
- ret = rfc3986_parse_path_absolute(uri, &str);
- if (ret != 0) {
- return ret;
- }
- } else if (ISA_PCHAR(str)) {
- ret = rfc3986_parse_path_no_scheme(uri, &str);
- if (ret != 0) {
- return ret;
- }
- } else {
- /* path-empty is effectively empty */
- if (uri != NULL) {
- g_free(uri->path);
- uri->path = NULL;
- }
- }
-
- if (*str == '?') {
- str++;
- ret = rfc3986_parse_query(uri, &str);
- if (ret != 0) {
- return ret;
- }
- }
- if (*str == '#') {
- str++;
- ret = rfc3986_parse_fragment(uri, &str);
- if (ret != 0) {
- return ret;
- }
- }
- if (*str != 0) {
- uri_clean(uri);
- return 1;
- }
- return 0;
-}
-
-/**
- * rfc3986_parse:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse an URI string and fills in the appropriate fields
- * of the @uri structure
- *
- * scheme ":" hier-part [ "?" query ] [ "#" fragment ]
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse(URI *uri, const char *str)
-{
- int ret;
-
- ret = rfc3986_parse_scheme(uri, &str);
- if (ret != 0) {
- return ret;
- }
- if (*str != ':') {
- return 1;
- }
- str++;
- ret = rfc3986_parse_hier_part(uri, &str);
- if (ret != 0) {
- return ret;
- }
- if (*str == '?') {
- str++;
- ret = rfc3986_parse_query(uri, &str);
- if (ret != 0) {
- return ret;
- }
- }
- if (*str == '#') {
- str++;
- ret = rfc3986_parse_fragment(uri, &str);
- if (ret != 0) {
- return ret;
- }
- }
- if (*str != 0) {
- uri_clean(uri);
- return 1;
- }
- return 0;
-}
-
-/**
- * rfc3986_parse_uri_reference:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse an URI reference string and fills in the appropriate fields
- * of the @uri structure
- *
- * URI-reference = URI / relative-ref
- *
- * Returns 0 or the error code
- */
-static int rfc3986_parse_uri_reference(URI *uri, const char *str)
-{
- int ret;
-
- if (str == NULL) {
- return -1;
- }
- uri_clean(uri);
-
- /*
- * Try first to parse absolute refs, then fallback to relative if
- * it fails.
- */
- ret = rfc3986_parse(uri, str);
- if (ret != 0) {
- uri_clean(uri);
- ret = rfc3986_parse_relative_ref(uri, str);
- if (ret != 0) {
- uri_clean(uri);
- return ret;
- }
- }
- return 0;
-}
-
-/**
- * uri_parse:
- * @str: the URI string to analyze
- *
- * Parse an URI based on RFC 3986
- *
- * URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ]
- *
- * Returns a newly built URI or NULL in case of error
- */
-URI *uri_parse(const char *str)
-{
- URI *uri;
- int ret;
-
- if (str == NULL) {
- return NULL;
- }
- uri = uri_new();
- ret = rfc3986_parse_uri_reference(uri, str);
- if (ret) {
- uri_free(uri);
- return NULL;
- }
- return uri;
-}
-
-/**
- * uri_parse_into:
- * @uri: pointer to an URI structure
- * @str: the string to analyze
- *
- * Parse an URI reference string based on RFC 3986 and fills in the
- * appropriate fields of the @uri structure
- *
- * URI-reference = URI / relative-ref
- *
- * Returns 0 or the error code
- */
-int uri_parse_into(URI *uri, const char *str)
-{
- return rfc3986_parse_uri_reference(uri, str);
-}
-
-/**
- * uri_parse_raw:
- * @str: the URI string to analyze
- * @raw: if 1 unescaping of URI pieces are disabled
- *
- * Parse an URI but allows to keep intact the original fragments.
- *
- * URI-reference = URI / relative-ref
- *
- * Returns a newly built URI or NULL in case of error
- */
-URI *uri_parse_raw(const char *str, int raw)
-{
- URI *uri;
- int ret;
-
- if (str == NULL) {
- return NULL;
- }
- uri = uri_new();
- if (raw) {
- uri->cleanup |= 2;
- }
- ret = uri_parse_into(uri, str);
- if (ret) {
- uri_free(uri);
- return NULL;
- }
- return uri;
-}
-
-/************************************************************************
- * *
- * Generic URI structure functions *
- * *
- ************************************************************************/
-
-/**
- * uri_new:
- *
- * Simply creates an empty URI
- *
- * Returns the new structure or NULL in case of error
- */
-URI *uri_new(void)
-{
- return g_new0(URI, 1);
-}
-
-/**
- * realloc2n:
- *
- * Function to handle properly a reallocation when saving an URI
- * Also imposes some limit on the length of an URI string output
- */
-static char *realloc2n(char *ret, int *max)
-{
- char *temp;
- int tmp;
-
- tmp = *max * 2;
- temp = g_realloc(ret, (tmp + 1));
- *max = tmp;
- return temp;
-}
-
-/**
- * uri_to_string:
- * @uri: pointer to an URI
- *
- * Save the URI as an escaped string
- *
- * Returns a new string (to be deallocated by caller)
- */
-char *uri_to_string(URI *uri)
-{
- char *ret = NULL;
- char *temp;
- const char *p;
- int len;
- int max;
-
- if (uri == NULL) {
- return NULL;
- }
-
- max = 80;
- ret = g_malloc(max + 1);
- len = 0;
-
- if (uri->scheme != NULL) {
- p = uri->scheme;
- while (*p != 0) {
- if (len >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len++] = *p++;
- }
- if (len >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len++] = ':';
- }
- if (uri->opaque != NULL) {
- p = uri->opaque;
- while (*p != 0) {
- if (len + 3 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- if (IS_RESERVED(*(p)) || IS_UNRESERVED(*(p))) {
- ret[len++] = *p++;
- } else {
- int val = *(unsigned char *)p++;
- int hi = val / 0x10, lo = val % 0x10;
- ret[len++] = '%';
- ret[len++] = hi + (hi > 9 ? 'A' - 10 : '0');
- ret[len++] = lo + (lo > 9 ? 'A' - 10 : '0');
- }
- }
- } else {
- if (uri->server != NULL) {
- if (len + 3 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len++] = '/';
- ret[len++] = '/';
- if (uri->user != NULL) {
- p = uri->user;
- while (*p != 0) {
- if (len + 3 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- if ((IS_UNRESERVED(*(p))) || ((*(p) == ';')) ||
- ((*(p) == ':')) || ((*(p) == '&')) || ((*(p) == '=')) ||
- ((*(p) == '+')) || ((*(p) == '$')) || ((*(p) == ','))) {
- ret[len++] = *p++;
- } else {
- int val = *(unsigned char *)p++;
- int hi = val / 0x10, lo = val % 0x10;
- ret[len++] = '%';
- ret[len++] = hi + (hi > 9 ? 'A' - 10 : '0');
- ret[len++] = lo + (lo > 9 ? 'A' - 10 : '0');
- }
- }
- if (len + 3 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len++] = '@';
- }
- p = uri->server;
- while (*p != 0) {
- if (len >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len++] = *p++;
- }
- if (uri->port > 0) {
- if (len + 10 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- len += snprintf(&ret[len], max - len, ":%d", uri->port);
- }
- } else if (uri->authority != NULL) {
- if (len + 3 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len++] = '/';
- ret[len++] = '/';
- p = uri->authority;
- while (*p != 0) {
- if (len + 3 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- if ((IS_UNRESERVED(*(p))) || ((*(p) == '$')) ||
- ((*(p) == ',')) || ((*(p) == ';')) || ((*(p) == ':')) ||
- ((*(p) == '@')) || ((*(p) == '&')) || ((*(p) == '=')) ||
- ((*(p) == '+'))) {
- ret[len++] = *p++;
- } else {
- int val = *(unsigned char *)p++;
- int hi = val / 0x10, lo = val % 0x10;
- ret[len++] = '%';
- ret[len++] = hi + (hi > 9 ? 'A' - 10 : '0');
- ret[len++] = lo + (lo > 9 ? 'A' - 10 : '0');
- }
- }
- } else if (uri->scheme != NULL) {
- if (len + 3 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len++] = '/';
- ret[len++] = '/';
- }
- if (uri->path != NULL) {
- p = uri->path;
- /*
- * the colon in file:///d: should not be escaped or
- * Windows accesses fail later.
- */
- if ((uri->scheme != NULL) && (p[0] == '/') &&
- (((p[1] >= 'a') && (p[1] <= 'z')) ||
- ((p[1] >= 'A') && (p[1] <= 'Z'))) &&
- (p[2] == ':') && (!strcmp(uri->scheme, "file"))) {
- if (len + 3 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len++] = *p++;
- ret[len++] = *p++;
- ret[len++] = *p++;
- }
- while (*p != 0) {
- if (len + 3 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- if ((IS_UNRESERVED(*(p))) || ((*(p) == '/')) ||
- ((*(p) == ';')) || ((*(p) == '@')) || ((*(p) == '&')) ||
- ((*(p) == '=')) || ((*(p) == '+')) || ((*(p) == '$')) ||
- ((*(p) == ','))) {
- ret[len++] = *p++;
- } else {
- int val = *(unsigned char *)p++;
- int hi = val / 0x10, lo = val % 0x10;
- ret[len++] = '%';
- ret[len++] = hi + (hi > 9 ? 'A' - 10 : '0');
- ret[len++] = lo + (lo > 9 ? 'A' - 10 : '0');
- }
- }
- }
- if (uri->query != NULL) {
- if (len + 1 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len++] = '?';
- p = uri->query;
- while (*p != 0) {
- if (len + 1 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len++] = *p++;
- }
- }
- }
- if (uri->fragment != NULL) {
- if (len + 3 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len++] = '#';
- p = uri->fragment;
- while (*p != 0) {
- if (len + 3 >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- if ((IS_UNRESERVED(*(p))) || (IS_RESERVED(*(p)))) {
- ret[len++] = *p++;
- } else {
- int val = *(unsigned char *)p++;
- int hi = val / 0x10, lo = val % 0x10;
- ret[len++] = '%';
- ret[len++] = hi + (hi > 9 ? 'A' - 10 : '0');
- ret[len++] = lo + (lo > 9 ? 'A' - 10 : '0');
- }
- }
- }
- if (len >= max) {
- temp = realloc2n(ret, &max);
- ret = temp;
- }
- ret[len] = 0;
- return ret;
-}
-
-/**
- * uri_clean:
- * @uri: pointer to an URI
- *
- * Make sure the URI struct is free of content
- */
-static void uri_clean(URI *uri)
-{
- if (uri == NULL) {
- return;
- }
-
- g_free(uri->scheme);
- uri->scheme = NULL;
- g_free(uri->server);
- uri->server = NULL;
- g_free(uri->user);
- uri->user = NULL;
- g_free(uri->path);
- uri->path = NULL;
- g_free(uri->fragment);
- uri->fragment = NULL;
- g_free(uri->opaque);
- uri->opaque = NULL;
- g_free(uri->authority);
- uri->authority = NULL;
- g_free(uri->query);
- uri->query = NULL;
-}
-
-/**
- * uri_free:
- * @uri: pointer to an URI, NULL is ignored
- *
- * Free up the URI struct
- */
-void uri_free(URI *uri)
-{
- uri_clean(uri);
- g_free(uri);
-}
-
-/************************************************************************
- * *
- * Public functions *
- * *
- ************************************************************************/
-
-/*
- * Utility functions to help parse and assemble query strings.
- */
-
-struct QueryParams *query_params_new(int init_alloc)
-{
- struct QueryParams *ps;
-
- if (init_alloc <= 0) {
- init_alloc = 1;
- }
-
- ps = g_new(QueryParams, 1);
- ps->n = 0;
- ps->alloc = init_alloc;
- ps->p = g_new(QueryParam, ps->alloc);
-
- return ps;
-}
-
-/* Ensure there is space to store at least one more parameter
- * at the end of the set.
- */
-static int query_params_append(struct QueryParams *ps, const char *name,
- const char *value)
-{
- if (ps->n >= ps->alloc) {
- ps->p = g_renew(QueryParam, ps->p, ps->alloc * 2);
- ps->alloc *= 2;
- }
-
- ps->p[ps->n].name = g_strdup(name);
- ps->p[ps->n].value = g_strdup(value);
- ps->p[ps->n].ignore = 0;
- ps->n++;
-
- return 0;
-}
-
-void query_params_free(struct QueryParams *ps)
-{
- int i;
-
- for (i = 0; i < ps->n; ++i) {
- g_free(ps->p[i].name);
- g_free(ps->p[i].value);
- }
- g_free(ps->p);
- g_free(ps);
-}
-
-struct QueryParams *query_params_parse(const char *query)
-{
- struct QueryParams *ps;
- const char *end, *eq;
-
- ps = query_params_new(0);
- if (!query || query[0] == '\0') {
- return ps;
- }
-
- while (*query) {
- char *name = NULL, *value = NULL;
-
- /* Find the next separator, or end of the string. */
- end = strchr(query, '&');
- if (!end) {
- end = qemu_strchrnul(query, ';');
- }
-
- /* Find the first '=' character between here and end. */
- eq = strchr(query, '=');
- if (eq && eq >= end) {
- eq = NULL;
- }
-
- /* Empty section (eg. "&&"). */
- if (end == query) {
- goto next;
- }
-
- /* If there is no '=' character, then we have just "name"
- * and consistent with CGI.pm we assume value is "".
- */
- else if (!eq) {
- name = g_uri_unescape_segment(query, end, NULL);
- value = NULL;
- }
- /* Or if we have "name=" here (works around annoying
- * problem when calling uri_string_unescape with len = 0).
- */
- else if (eq + 1 == end) {
- name = g_uri_unescape_segment(query, eq, NULL);
- value = g_new0(char, 1);
- }
- /* If the '=' character is at the beginning then we have
- * "=value" and consistent with CGI.pm we _ignore_ this.
- */
- else if (query == eq) {
- goto next;
- }
-
- /* Otherwise it's "name=value". */
- else {
- name = g_uri_unescape_segment(query, eq, NULL);
- value = g_uri_unescape_segment(eq + 1, end, NULL);
- }
-
- /* Append to the parameter set. */
- query_params_append(ps, name, value);
- g_free(name);
- g_free(value);
-
- next:
- query = end;
- if (*query) {
- query++; /* skip '&' separator */
- }
- }
-
- return ps;
-}
generated by cgit v1.2.3 (git 2.26.2) at 2025-03-21 05:30:30 +0000