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Diffstat (limited to 'util/uri.c')
| -rw-r--r-- | util/uri.c | 1466 |
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; -} |