1baacf047SPaolo Bonzini /**
2baacf047SPaolo Bonzini * uri.c: set of generic URI related routines
3baacf047SPaolo Bonzini *
4baacf047SPaolo Bonzini * Reference: RFCs 3986, 2732 and 2373
5baacf047SPaolo Bonzini *
6baacf047SPaolo Bonzini * Copyright (C) 1998-2003 Daniel Veillard. All Rights Reserved.
7baacf047SPaolo Bonzini *
8baacf047SPaolo Bonzini * Permission is hereby granted, free of charge, to any person obtaining a copy
9baacf047SPaolo Bonzini * of this software and associated documentation files (the "Software"), to deal
10baacf047SPaolo Bonzini * in the Software without restriction, including without limitation the rights
11baacf047SPaolo Bonzini * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12baacf047SPaolo Bonzini * copies of the Software, and to permit persons to whom the Software is
13baacf047SPaolo Bonzini * furnished to do so, subject to the following conditions:
14baacf047SPaolo Bonzini *
15baacf047SPaolo Bonzini * The above copyright notice and this permission notice shall be included in
16baacf047SPaolo Bonzini * all copies or substantial portions of the Software.
17baacf047SPaolo Bonzini *
18baacf047SPaolo Bonzini * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19baacf047SPaolo Bonzini * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20baacf047SPaolo Bonzini * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21baacf047SPaolo Bonzini * DANIEL VEILLARD BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
22baacf047SPaolo Bonzini * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23baacf047SPaolo Bonzini * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24baacf047SPaolo Bonzini *
25baacf047SPaolo Bonzini * Except as contained in this notice, the name of Daniel Veillard shall not
26baacf047SPaolo Bonzini * be used in advertising or otherwise to promote the sale, use or other
27baacf047SPaolo Bonzini * dealings in this Software without prior written authorization from him.
28baacf047SPaolo Bonzini *
29baacf047SPaolo Bonzini * daniel@veillard.com
30baacf047SPaolo Bonzini *
31baacf047SPaolo Bonzini **
32baacf047SPaolo Bonzini *
33baacf047SPaolo Bonzini * Copyright (C) 2007, 2009-2010 Red Hat, Inc.
34baacf047SPaolo Bonzini *
35baacf047SPaolo Bonzini * This library is free software; you can redistribute it and/or
36baacf047SPaolo Bonzini * modify it under the terms of the GNU Lesser General Public
37baacf047SPaolo Bonzini * License as published by the Free Software Foundation; either
38baacf047SPaolo Bonzini * version 2.1 of the License, or (at your option) any later version.
39baacf047SPaolo Bonzini *
40baacf047SPaolo Bonzini * This library is distributed in the hope that it will be useful,
41baacf047SPaolo Bonzini * but WITHOUT ANY WARRANTY; without even the implied warranty of
42baacf047SPaolo Bonzini * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
43baacf047SPaolo Bonzini * Lesser General Public License for more details.
44baacf047SPaolo Bonzini *
45baacf047SPaolo Bonzini * You should have received a copy of the GNU Lesser General Public
46*0c201cc1SKhadija Kamran * License along with this library. If not, see <https://www.gnu.org/licenses/>.
47baacf047SPaolo Bonzini *
48baacf047SPaolo Bonzini * Authors:
49baacf047SPaolo Bonzini * Richard W.M. Jones <rjones@redhat.com>
50baacf047SPaolo Bonzini *
51baacf047SPaolo Bonzini */
52baacf047SPaolo Bonzini
53aafd7584SPeter Maydell #include "qemu/osdep.h"
545c99fa37SKeno Fischer #include "qemu/cutils.h"
55baacf047SPaolo Bonzini
56baacf047SPaolo Bonzini #include "qemu/uri.h"
57baacf047SPaolo Bonzini
58baacf047SPaolo Bonzini static void uri_clean(URI *uri);
59baacf047SPaolo Bonzini
60baacf047SPaolo Bonzini /*
61baacf047SPaolo Bonzini * Old rule from 2396 used in legacy handling code
62baacf047SPaolo Bonzini * alpha = lowalpha | upalpha
63baacf047SPaolo Bonzini */
64baacf047SPaolo Bonzini #define IS_ALPHA(x) (IS_LOWALPHA(x) || IS_UPALPHA(x))
65baacf047SPaolo Bonzini
66baacf047SPaolo Bonzini /*
67baacf047SPaolo Bonzini * lowalpha = "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" |
68baacf047SPaolo Bonzini * "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" | "s" | "t" |
69baacf047SPaolo Bonzini * "u" | "v" | "w" | "x" | "y" | "z"
70baacf047SPaolo Bonzini */
71baacf047SPaolo Bonzini
72baacf047SPaolo Bonzini #define IS_LOWALPHA(x) (((x) >= 'a') && ((x) <= 'z'))
73baacf047SPaolo Bonzini
74baacf047SPaolo Bonzini /*
75baacf047SPaolo Bonzini * upalpha = "A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | "J" |
76baacf047SPaolo Bonzini * "K" | "L" | "M" | "N" | "O" | "P" | "Q" | "R" | "S" | "T" |
77baacf047SPaolo Bonzini * "U" | "V" | "W" | "X" | "Y" | "Z"
78baacf047SPaolo Bonzini */
79baacf047SPaolo Bonzini #define IS_UPALPHA(x) (((x) >= 'A') && ((x) <= 'Z'))
80baacf047SPaolo Bonzini
81baacf047SPaolo Bonzini #ifdef IS_DIGIT
82baacf047SPaolo Bonzini #undef IS_DIGIT
83baacf047SPaolo Bonzini #endif
84baacf047SPaolo Bonzini /*
85baacf047SPaolo Bonzini * digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"
86baacf047SPaolo Bonzini */
87baacf047SPaolo Bonzini #define IS_DIGIT(x) (((x) >= '0') && ((x) <= '9'))
88baacf047SPaolo Bonzini
89baacf047SPaolo Bonzini /*
90baacf047SPaolo Bonzini * alphanum = alpha | digit
91baacf047SPaolo Bonzini */
92baacf047SPaolo Bonzini
93baacf047SPaolo Bonzini #define IS_ALPHANUM(x) (IS_ALPHA(x) || IS_DIGIT(x))
94baacf047SPaolo Bonzini
95baacf047SPaolo Bonzini /*
96baacf047SPaolo Bonzini * mark = "-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")"
97baacf047SPaolo Bonzini */
98baacf047SPaolo Bonzini
99baacf047SPaolo Bonzini #define IS_MARK(x) (((x) == '-') || ((x) == '_') || ((x) == '.') || \
100baacf047SPaolo Bonzini ((x) == '!') || ((x) == '~') || ((x) == '*') || ((x) == '\'') || \
101baacf047SPaolo Bonzini ((x) == '(') || ((x) == ')'))
102baacf047SPaolo Bonzini
103baacf047SPaolo Bonzini /*
104baacf047SPaolo Bonzini * unwise = "{" | "}" | "|" | "\" | "^" | "`"
105baacf047SPaolo Bonzini */
106baacf047SPaolo Bonzini
107baacf047SPaolo Bonzini #define IS_UNWISE(p) \
108baacf047SPaolo Bonzini (((*(p) == '{')) || ((*(p) == '}')) || ((*(p) == '|')) || \
109baacf047SPaolo Bonzini ((*(p) == '\\')) || ((*(p) == '^')) || ((*(p) == '[')) || \
110baacf047SPaolo Bonzini ((*(p) == ']')) || ((*(p) == '`')))
111baacf047SPaolo Bonzini /*
112baacf047SPaolo Bonzini * reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" | "$" | "," |
113baacf047SPaolo Bonzini * "[" | "]"
114baacf047SPaolo Bonzini */
115baacf047SPaolo Bonzini
116baacf047SPaolo Bonzini #define IS_RESERVED(x) (((x) == ';') || ((x) == '/') || ((x) == '?') || \
117baacf047SPaolo Bonzini ((x) == ':') || ((x) == '@') || ((x) == '&') || ((x) == '=') || \
118baacf047SPaolo Bonzini ((x) == '+') || ((x) == '$') || ((x) == ',') || ((x) == '[') || \
119baacf047SPaolo Bonzini ((x) == ']'))
120baacf047SPaolo Bonzini
121baacf047SPaolo Bonzini /*
122baacf047SPaolo Bonzini * unreserved = alphanum | mark
123baacf047SPaolo Bonzini */
124baacf047SPaolo Bonzini
125baacf047SPaolo Bonzini #define IS_UNRESERVED(x) (IS_ALPHANUM(x) || IS_MARK(x))
126baacf047SPaolo Bonzini
127baacf047SPaolo Bonzini /*
128baacf047SPaolo Bonzini * Skip to next pointer char, handle escaped sequences
129baacf047SPaolo Bonzini */
130baacf047SPaolo Bonzini
131baacf047SPaolo Bonzini #define NEXT(p) ((*p == '%') ? p += 3 : p++)
132baacf047SPaolo Bonzini
133baacf047SPaolo Bonzini /*
134baacf047SPaolo Bonzini * Productions from the spec.
135baacf047SPaolo Bonzini *
136baacf047SPaolo Bonzini * authority = server | reg_name
137baacf047SPaolo Bonzini * reg_name = 1*( unreserved | escaped | "$" | "," |
138baacf047SPaolo Bonzini * ";" | ":" | "@" | "&" | "=" | "+" )
139baacf047SPaolo Bonzini *
140baacf047SPaolo Bonzini * path = [ abs_path | opaque_part ]
141baacf047SPaolo Bonzini */
142baacf047SPaolo Bonzini
143baacf047SPaolo Bonzini /************************************************************************
144baacf047SPaolo Bonzini * *
145baacf047SPaolo Bonzini * RFC 3986 parser *
146baacf047SPaolo Bonzini * *
147baacf047SPaolo Bonzini ************************************************************************/
148baacf047SPaolo Bonzini
149baacf047SPaolo Bonzini #define ISA_DIGIT(p) ((*(p) >= '0') && (*(p) <= '9'))
150baacf047SPaolo Bonzini #define ISA_ALPHA(p) (((*(p) >= 'a') && (*(p) <= 'z')) || \
151baacf047SPaolo Bonzini ((*(p) >= 'A') && (*(p) <= 'Z')))
152baacf047SPaolo Bonzini #define ISA_HEXDIG(p) \
153baacf047SPaolo Bonzini (ISA_DIGIT(p) || ((*(p) >= 'a') && (*(p) <= 'f')) || \
154baacf047SPaolo Bonzini ((*(p) >= 'A') && (*(p) <= 'F')))
155baacf047SPaolo Bonzini
156baacf047SPaolo Bonzini /*
157baacf047SPaolo Bonzini * sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
158baacf047SPaolo Bonzini * / "*" / "+" / "," / ";" / "="
159baacf047SPaolo Bonzini */
160baacf047SPaolo Bonzini #define ISA_SUB_DELIM(p) \
161baacf047SPaolo Bonzini (((*(p) == '!')) || ((*(p) == '$')) || ((*(p) == '&')) || \
162baacf047SPaolo Bonzini ((*(p) == '(')) || ((*(p) == ')')) || ((*(p) == '*')) || \
163baacf047SPaolo Bonzini ((*(p) == '+')) || ((*(p) == ',')) || ((*(p) == ';')) || \
164baacf047SPaolo Bonzini ((*(p) == '=')) || ((*(p) == '\'')))
165baacf047SPaolo Bonzini
166baacf047SPaolo Bonzini /*
167baacf047SPaolo Bonzini * gen-delims = ":" / "/" / "?" / "#" / "[" / "]" / "@"
168baacf047SPaolo Bonzini */
169baacf047SPaolo Bonzini #define ISA_GEN_DELIM(p) \
170baacf047SPaolo Bonzini (((*(p) == ':')) || ((*(p) == '/')) || ((*(p) == '?')) || \
171baacf047SPaolo Bonzini ((*(p) == '#')) || ((*(p) == '[')) || ((*(p) == ']')) || \
172baacf047SPaolo Bonzini ((*(p) == '@')))
173baacf047SPaolo Bonzini
174baacf047SPaolo Bonzini /*
175baacf047SPaolo Bonzini * reserved = gen-delims / sub-delims
176baacf047SPaolo Bonzini */
177baacf047SPaolo Bonzini #define ISA_RESERVED(p) (ISA_GEN_DELIM(p) || (ISA_SUB_DELIM(p)))
178baacf047SPaolo Bonzini
179baacf047SPaolo Bonzini /*
180baacf047SPaolo Bonzini * unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
181baacf047SPaolo Bonzini */
182baacf047SPaolo Bonzini #define ISA_UNRESERVED(p) \
183baacf047SPaolo Bonzini ((ISA_ALPHA(p)) || (ISA_DIGIT(p)) || ((*(p) == '-')) || \
184baacf047SPaolo Bonzini ((*(p) == '.')) || ((*(p) == '_')) || ((*(p) == '~')))
185baacf047SPaolo Bonzini
186baacf047SPaolo Bonzini /*
187baacf047SPaolo Bonzini * pct-encoded = "%" HEXDIG HEXDIG
188baacf047SPaolo Bonzini */
189baacf047SPaolo Bonzini #define ISA_PCT_ENCODED(p) \
190baacf047SPaolo Bonzini ((*(p) == '%') && (ISA_HEXDIG(p + 1)) && (ISA_HEXDIG(p + 2)))
191baacf047SPaolo Bonzini
192baacf047SPaolo Bonzini /*
193baacf047SPaolo Bonzini * pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
194baacf047SPaolo Bonzini */
195baacf047SPaolo Bonzini #define ISA_PCHAR(p) \
196baacf047SPaolo Bonzini (ISA_UNRESERVED(p) || ISA_PCT_ENCODED(p) || ISA_SUB_DELIM(p) || \
197baacf047SPaolo Bonzini ((*(p) == ':')) || ((*(p) == '@')))
198baacf047SPaolo Bonzini
199baacf047SPaolo Bonzini /**
200baacf047SPaolo Bonzini * rfc3986_parse_scheme:
201baacf047SPaolo Bonzini * @uri: pointer to an URI structure
202baacf047SPaolo Bonzini * @str: pointer to the string to analyze
203baacf047SPaolo Bonzini *
204baacf047SPaolo Bonzini * Parse an URI scheme
205baacf047SPaolo Bonzini *
206baacf047SPaolo Bonzini * ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
207baacf047SPaolo Bonzini *
208baacf047SPaolo Bonzini * Returns 0 or the error code
209baacf047SPaolo Bonzini */
rfc3986_parse_scheme(URI * uri,const char ** str)210be95adafSSu Hang static int rfc3986_parse_scheme(URI *uri, const char **str)
211be95adafSSu Hang {
212baacf047SPaolo Bonzini const char *cur;
213baacf047SPaolo Bonzini
214a1515161SSu Hang if (str == NULL) {
21542fa2725SSu Hang return -1;
216a1515161SSu Hang }
217baacf047SPaolo Bonzini
218baacf047SPaolo Bonzini cur = *str;
219a1515161SSu Hang if (!ISA_ALPHA(cur)) {
22042fa2725SSu Hang return 2;
221a1515161SSu Hang }
222baacf047SPaolo Bonzini cur++;
223be95adafSSu Hang while (ISA_ALPHA(cur) || ISA_DIGIT(cur) || (*cur == '+') || (*cur == '-') ||
224a1515161SSu Hang (*cur == '.')) {
225be95adafSSu Hang cur++;
226a1515161SSu Hang }
227baacf047SPaolo Bonzini if (uri != NULL) {
22844c2286bSMarkus Armbruster g_free(uri->scheme);
229baacf047SPaolo Bonzini uri->scheme = g_strndup(*str, cur - *str);
230baacf047SPaolo Bonzini }
231baacf047SPaolo Bonzini *str = cur;
23242fa2725SSu Hang return 0;
233baacf047SPaolo Bonzini }
234baacf047SPaolo Bonzini
235baacf047SPaolo Bonzini /**
236baacf047SPaolo Bonzini * rfc3986_parse_fragment:
237baacf047SPaolo Bonzini * @uri: pointer to an URI structure
238baacf047SPaolo Bonzini * @str: pointer to the string to analyze
239baacf047SPaolo Bonzini *
240baacf047SPaolo Bonzini * Parse the query part of an URI
241baacf047SPaolo Bonzini *
242baacf047SPaolo Bonzini * fragment = *( pchar / "/" / "?" )
243baacf047SPaolo Bonzini * NOTE: the strict syntax as defined by 3986 does not allow '[' and ']'
244baacf047SPaolo Bonzini * in the fragment identifier but this is used very broadly for
245baacf047SPaolo Bonzini * xpointer scheme selection, so we are allowing it here to not break
246baacf047SPaolo Bonzini * for example all the DocBook processing chains.
247baacf047SPaolo Bonzini *
248baacf047SPaolo Bonzini * Returns 0 or the error code
249baacf047SPaolo Bonzini */
rfc3986_parse_fragment(URI * uri,const char ** str)250be95adafSSu Hang static int rfc3986_parse_fragment(URI *uri, const char **str)
251baacf047SPaolo Bonzini {
252baacf047SPaolo Bonzini const char *cur;
253baacf047SPaolo Bonzini
254a1515161SSu Hang if (str == NULL) {
25542fa2725SSu Hang return -1;
256a1515161SSu Hang }
257baacf047SPaolo Bonzini
258baacf047SPaolo Bonzini cur = *str;
259baacf047SPaolo Bonzini
260baacf047SPaolo Bonzini while ((ISA_PCHAR(cur)) || (*cur == '/') || (*cur == '?') ||
261baacf047SPaolo Bonzini (*cur == '[') || (*cur == ']') ||
262a1515161SSu Hang ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) {
263baacf047SPaolo Bonzini NEXT(cur);
264a1515161SSu Hang }
265baacf047SPaolo Bonzini if (uri != NULL) {
266baacf047SPaolo Bonzini g_free(uri->fragment);
267a1515161SSu Hang if (uri->cleanup & 2) {
268baacf047SPaolo Bonzini uri->fragment = g_strndup(*str, cur - *str);
269a1515161SSu Hang } else {
270baacf047SPaolo Bonzini uri->fragment = uri_string_unescape(*str, cur - *str, NULL);
271baacf047SPaolo Bonzini }
272a1515161SSu Hang }
273baacf047SPaolo Bonzini *str = cur;
27442fa2725SSu Hang return 0;
275baacf047SPaolo Bonzini }
276baacf047SPaolo Bonzini
277baacf047SPaolo Bonzini /**
278baacf047SPaolo Bonzini * rfc3986_parse_query:
279baacf047SPaolo Bonzini * @uri: pointer to an URI structure
280baacf047SPaolo Bonzini * @str: pointer to the string to analyze
281baacf047SPaolo Bonzini *
282baacf047SPaolo Bonzini * Parse the query part of an URI
283baacf047SPaolo Bonzini *
284baacf047SPaolo Bonzini * query = *uric
285baacf047SPaolo Bonzini *
286baacf047SPaolo Bonzini * Returns 0 or the error code
287baacf047SPaolo Bonzini */
rfc3986_parse_query(URI * uri,const char ** str)288be95adafSSu Hang static int rfc3986_parse_query(URI *uri, const char **str)
289baacf047SPaolo Bonzini {
290baacf047SPaolo Bonzini const char *cur;
291baacf047SPaolo Bonzini
292a1515161SSu Hang if (str == NULL) {
29342fa2725SSu Hang return -1;
294a1515161SSu Hang }
295baacf047SPaolo Bonzini
296baacf047SPaolo Bonzini cur = *str;
297baacf047SPaolo Bonzini
298baacf047SPaolo Bonzini while ((ISA_PCHAR(cur)) || (*cur == '/') || (*cur == '?') ||
299a1515161SSu Hang ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) {
300baacf047SPaolo Bonzini NEXT(cur);
301a1515161SSu Hang }
302baacf047SPaolo Bonzini if (uri != NULL) {
303baacf047SPaolo Bonzini g_free(uri->query);
304baacf047SPaolo Bonzini uri->query = g_strndup(*str, cur - *str);
305baacf047SPaolo Bonzini }
306baacf047SPaolo Bonzini *str = cur;
30742fa2725SSu Hang return 0;
308baacf047SPaolo Bonzini }
309baacf047SPaolo Bonzini
310baacf047SPaolo Bonzini /**
311baacf047SPaolo Bonzini * rfc3986_parse_port:
312baacf047SPaolo Bonzini * @uri: pointer to an URI structure
313baacf047SPaolo Bonzini * @str: the string to analyze
314baacf047SPaolo Bonzini *
315baacf047SPaolo Bonzini * Parse a port part and fills in the appropriate fields
316baacf047SPaolo Bonzini * of the @uri structure
317baacf047SPaolo Bonzini *
318baacf047SPaolo Bonzini * port = *DIGIT
319baacf047SPaolo Bonzini *
320baacf047SPaolo Bonzini * Returns 0 or the error code
321baacf047SPaolo Bonzini */
rfc3986_parse_port(URI * uri,const char ** str)322be95adafSSu Hang static int rfc3986_parse_port(URI *uri, const char **str)
323baacf047SPaolo Bonzini {
324baacf047SPaolo Bonzini const char *cur = *str;
3252b212330SMax Reitz int port = 0;
326baacf047SPaolo Bonzini
327baacf047SPaolo Bonzini if (ISA_DIGIT(cur)) {
328baacf047SPaolo Bonzini while (ISA_DIGIT(cur)) {
3292b212330SMax Reitz port = port * 10 + (*cur - '0');
3302b212330SMax Reitz if (port > 65535) {
3312b212330SMax Reitz return 1;
3322b212330SMax Reitz }
333baacf047SPaolo Bonzini cur++;
334baacf047SPaolo Bonzini }
3352b212330SMax Reitz if (uri) {
3362b212330SMax Reitz uri->port = port;
337baacf047SPaolo Bonzini }
3382b212330SMax Reitz *str = cur;
3392b212330SMax Reitz return 0;
3402b212330SMax Reitz }
3412b212330SMax Reitz return 1;
342baacf047SPaolo Bonzini }
343baacf047SPaolo Bonzini
344baacf047SPaolo Bonzini /**
345baacf047SPaolo Bonzini * rfc3986_parse_user_info:
346baacf047SPaolo Bonzini * @uri: pointer to an URI structure
347baacf047SPaolo Bonzini * @str: the string to analyze
348baacf047SPaolo Bonzini *
349736a83faSStefan Weil * Parse a user information part and fill in the appropriate fields
350baacf047SPaolo Bonzini * of the @uri structure
351baacf047SPaolo Bonzini *
352baacf047SPaolo Bonzini * userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
353baacf047SPaolo Bonzini *
354baacf047SPaolo Bonzini * Returns 0 or the error code
355baacf047SPaolo Bonzini */
rfc3986_parse_user_info(URI * uri,const char ** str)356be95adafSSu Hang static int rfc3986_parse_user_info(URI *uri, const char **str)
357baacf047SPaolo Bonzini {
358baacf047SPaolo Bonzini const char *cur;
359baacf047SPaolo Bonzini
360baacf047SPaolo Bonzini cur = *str;
361be95adafSSu Hang while (ISA_UNRESERVED(cur) || ISA_PCT_ENCODED(cur) || ISA_SUB_DELIM(cur) ||
362a1515161SSu Hang (*cur == ':')) {
363baacf047SPaolo Bonzini NEXT(cur);
364a1515161SSu Hang }
365baacf047SPaolo Bonzini if (*cur == '@') {
366baacf047SPaolo Bonzini if (uri != NULL) {
36744c2286bSMarkus Armbruster g_free(uri->user);
368a1515161SSu Hang if (uri->cleanup & 2) {
369baacf047SPaolo Bonzini uri->user = g_strndup(*str, cur - *str);
370a1515161SSu Hang } else {
371baacf047SPaolo Bonzini uri->user = uri_string_unescape(*str, cur - *str, NULL);
372baacf047SPaolo Bonzini }
373a1515161SSu Hang }
374baacf047SPaolo Bonzini *str = cur;
37542fa2725SSu Hang return 0;
376baacf047SPaolo Bonzini }
37742fa2725SSu Hang return 1;
378baacf047SPaolo Bonzini }
379baacf047SPaolo Bonzini
380baacf047SPaolo Bonzini /**
381baacf047SPaolo Bonzini * rfc3986_parse_dec_octet:
382baacf047SPaolo Bonzini * @str: the string to analyze
383baacf047SPaolo Bonzini *
384baacf047SPaolo Bonzini * dec-octet = DIGIT ; 0-9
385baacf047SPaolo Bonzini * / %x31-39 DIGIT ; 10-99
386baacf047SPaolo Bonzini * / "1" 2DIGIT ; 100-199
387baacf047SPaolo Bonzini * / "2" %x30-34 DIGIT ; 200-249
388baacf047SPaolo Bonzini * / "25" %x30-35 ; 250-255
389baacf047SPaolo Bonzini *
390baacf047SPaolo Bonzini * Skip a dec-octet.
391baacf047SPaolo Bonzini *
392baacf047SPaolo Bonzini * Returns 0 if found and skipped, 1 otherwise
393baacf047SPaolo Bonzini */
rfc3986_parse_dec_octet(const char ** str)394be95adafSSu Hang static int rfc3986_parse_dec_octet(const char **str)
395be95adafSSu Hang {
396baacf047SPaolo Bonzini const char *cur = *str;
397baacf047SPaolo Bonzini
398a1515161SSu Hang if (!(ISA_DIGIT(cur))) {
39942fa2725SSu Hang return 1;
400a1515161SSu Hang }
401a1515161SSu Hang if (!ISA_DIGIT(cur + 1)) {
402baacf047SPaolo Bonzini cur++;
403a1515161SSu Hang } else if ((*cur != '0') && (ISA_DIGIT(cur + 1)) && (!ISA_DIGIT(cur + 2))) {
404baacf047SPaolo Bonzini cur += 2;
405a1515161SSu Hang } else if ((*cur == '1') && (ISA_DIGIT(cur + 1)) && (ISA_DIGIT(cur + 2))) {
406baacf047SPaolo Bonzini cur += 3;
407a1515161SSu Hang } else if ((*cur == '2') && (*(cur + 1) >= '0') && (*(cur + 1) <= '4') &&
408a1515161SSu Hang (ISA_DIGIT(cur + 2))) {
409baacf047SPaolo Bonzini cur += 3;
410a1515161SSu Hang } else if ((*cur == '2') && (*(cur + 1) == '5') && (*(cur + 2) >= '0') &&
411a1515161SSu Hang (*(cur + 1) <= '5')) {
412baacf047SPaolo Bonzini cur += 3;
413a1515161SSu Hang } else {
41442fa2725SSu Hang return 1;
415a1515161SSu Hang }
416baacf047SPaolo Bonzini *str = cur;
41742fa2725SSu Hang return 0;
418baacf047SPaolo Bonzini }
419baacf047SPaolo Bonzini /**
420baacf047SPaolo Bonzini * rfc3986_parse_host:
421baacf047SPaolo Bonzini * @uri: pointer to an URI structure
422baacf047SPaolo Bonzini * @str: the string to analyze
423baacf047SPaolo Bonzini *
424baacf047SPaolo Bonzini * Parse an host part and fills in the appropriate fields
425baacf047SPaolo Bonzini * of the @uri structure
426baacf047SPaolo Bonzini *
427baacf047SPaolo Bonzini * host = IP-literal / IPv4address / reg-name
428baacf047SPaolo Bonzini * IP-literal = "[" ( IPv6address / IPvFuture ) "]"
429baacf047SPaolo Bonzini * IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet
430baacf047SPaolo Bonzini * reg-name = *( unreserved / pct-encoded / sub-delims )
431baacf047SPaolo Bonzini *
432baacf047SPaolo Bonzini * Returns 0 or the error code
433baacf047SPaolo Bonzini */
rfc3986_parse_host(URI * uri,const char ** str)434be95adafSSu Hang static int rfc3986_parse_host(URI *uri, const char **str)
435baacf047SPaolo Bonzini {
436baacf047SPaolo Bonzini const char *cur = *str;
437baacf047SPaolo Bonzini const char *host;
438baacf047SPaolo Bonzini
439baacf047SPaolo Bonzini host = cur;
440baacf047SPaolo Bonzini /*
441baacf047SPaolo Bonzini * IPv6 and future addressing scheme are enclosed between brackets
442baacf047SPaolo Bonzini */
443baacf047SPaolo Bonzini if (*cur == '[') {
444baacf047SPaolo Bonzini cur++;
445a1515161SSu Hang while ((*cur != ']') && (*cur != 0)) {
446baacf047SPaolo Bonzini cur++;
447a1515161SSu Hang }
448a1515161SSu Hang if (*cur != ']') {
44942fa2725SSu Hang return 1;
450a1515161SSu Hang }
451baacf047SPaolo Bonzini cur++;
452baacf047SPaolo Bonzini goto found;
453baacf047SPaolo Bonzini }
454baacf047SPaolo Bonzini /*
455baacf047SPaolo Bonzini * try to parse an IPv4
456baacf047SPaolo Bonzini */
457baacf047SPaolo Bonzini if (ISA_DIGIT(cur)) {
458a1515161SSu Hang if (rfc3986_parse_dec_octet(&cur) != 0) {
459baacf047SPaolo Bonzini goto not_ipv4;
460a1515161SSu Hang }
461a1515161SSu Hang if (*cur != '.') {
462baacf047SPaolo Bonzini goto not_ipv4;
463a1515161SSu Hang }
464baacf047SPaolo Bonzini cur++;
465a1515161SSu Hang if (rfc3986_parse_dec_octet(&cur) != 0) {
466baacf047SPaolo Bonzini goto not_ipv4;
467a1515161SSu Hang }
468a1515161SSu Hang if (*cur != '.') {
469baacf047SPaolo Bonzini goto not_ipv4;
470a1515161SSu Hang }
471a1515161SSu Hang if (rfc3986_parse_dec_octet(&cur) != 0) {
472baacf047SPaolo Bonzini goto not_ipv4;
473a1515161SSu Hang }
474a1515161SSu Hang if (*cur != '.') {
475baacf047SPaolo Bonzini goto not_ipv4;
476a1515161SSu Hang }
477a1515161SSu Hang if (rfc3986_parse_dec_octet(&cur) != 0) {
478baacf047SPaolo Bonzini goto not_ipv4;
479a1515161SSu Hang }
480baacf047SPaolo Bonzini goto found;
481baacf047SPaolo Bonzini not_ipv4:
482baacf047SPaolo Bonzini cur = *str;
483baacf047SPaolo Bonzini }
484baacf047SPaolo Bonzini /*
485baacf047SPaolo Bonzini * then this should be a hostname which can be empty
486baacf047SPaolo Bonzini */
487a1515161SSu Hang while (ISA_UNRESERVED(cur) || ISA_PCT_ENCODED(cur) || ISA_SUB_DELIM(cur)) {
488baacf047SPaolo Bonzini NEXT(cur);
489a1515161SSu Hang }
490baacf047SPaolo Bonzini found:
491baacf047SPaolo Bonzini if (uri != NULL) {
49244c2286bSMarkus Armbruster g_free(uri->authority);
493baacf047SPaolo Bonzini uri->authority = NULL;
49444c2286bSMarkus Armbruster g_free(uri->server);
495baacf047SPaolo Bonzini if (cur != host) {
496a1515161SSu Hang if (uri->cleanup & 2) {
497baacf047SPaolo Bonzini uri->server = g_strndup(host, cur - host);
498a1515161SSu Hang } else {
499baacf047SPaolo Bonzini uri->server = uri_string_unescape(host, cur - host, NULL);
500a1515161SSu Hang }
501a1515161SSu Hang } else {
502baacf047SPaolo Bonzini uri->server = NULL;
503baacf047SPaolo Bonzini }
504a1515161SSu Hang }
505baacf047SPaolo Bonzini *str = cur;
50642fa2725SSu Hang return 0;
507baacf047SPaolo Bonzini }
508baacf047SPaolo Bonzini
509baacf047SPaolo Bonzini /**
510baacf047SPaolo Bonzini * rfc3986_parse_authority:
511baacf047SPaolo Bonzini * @uri: pointer to an URI structure
512baacf047SPaolo Bonzini * @str: the string to analyze
513baacf047SPaolo Bonzini *
514baacf047SPaolo Bonzini * Parse an authority part and fills in the appropriate fields
515baacf047SPaolo Bonzini * of the @uri structure
516baacf047SPaolo Bonzini *
517baacf047SPaolo Bonzini * authority = [ userinfo "@" ] host [ ":" port ]
518baacf047SPaolo Bonzini *
519baacf047SPaolo Bonzini * Returns 0 or the error code
520baacf047SPaolo Bonzini */
rfc3986_parse_authority(URI * uri,const char ** str)521be95adafSSu Hang static int rfc3986_parse_authority(URI *uri, const char **str)
522baacf047SPaolo Bonzini {
523baacf047SPaolo Bonzini const char *cur;
524baacf047SPaolo Bonzini int ret;
525baacf047SPaolo Bonzini
526baacf047SPaolo Bonzini cur = *str;
527baacf047SPaolo Bonzini /*
528736a83faSStefan Weil * try to parse a userinfo and check for the trailing @
529baacf047SPaolo Bonzini */
530baacf047SPaolo Bonzini ret = rfc3986_parse_user_info(uri, &cur);
531a1515161SSu Hang if ((ret != 0) || (*cur != '@')) {
532baacf047SPaolo Bonzini cur = *str;
533a1515161SSu Hang } else {
534baacf047SPaolo Bonzini cur++;
535a1515161SSu Hang }
536baacf047SPaolo Bonzini ret = rfc3986_parse_host(uri, &cur);
537a1515161SSu Hang if (ret != 0) {
53842fa2725SSu Hang return ret;
539a1515161SSu Hang }
540baacf047SPaolo Bonzini if (*cur == ':') {
541baacf047SPaolo Bonzini cur++;
542baacf047SPaolo Bonzini ret = rfc3986_parse_port(uri, &cur);
543a1515161SSu Hang if (ret != 0) {
54442fa2725SSu Hang return ret;
545baacf047SPaolo Bonzini }
546a1515161SSu Hang }
547baacf047SPaolo Bonzini *str = cur;
54842fa2725SSu Hang return 0;
549baacf047SPaolo Bonzini }
550baacf047SPaolo Bonzini
551baacf047SPaolo Bonzini /**
552baacf047SPaolo Bonzini * rfc3986_parse_segment:
553baacf047SPaolo Bonzini * @str: the string to analyze
554baacf047SPaolo Bonzini * @forbid: an optional forbidden character
555baacf047SPaolo Bonzini * @empty: allow an empty segment
556baacf047SPaolo Bonzini *
557baacf047SPaolo Bonzini * Parse a segment and fills in the appropriate fields
558baacf047SPaolo Bonzini * of the @uri structure
559baacf047SPaolo Bonzini *
560baacf047SPaolo Bonzini * segment = *pchar
561baacf047SPaolo Bonzini * segment-nz = 1*pchar
562baacf047SPaolo Bonzini * segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" )
563baacf047SPaolo Bonzini * ; non-zero-length segment without any colon ":"
564baacf047SPaolo Bonzini *
565baacf047SPaolo Bonzini * Returns 0 or the error code
566baacf047SPaolo Bonzini */
rfc3986_parse_segment(const char ** str,char forbid,int empty)567be95adafSSu Hang static int rfc3986_parse_segment(const char **str, char forbid, int empty)
568baacf047SPaolo Bonzini {
569baacf047SPaolo Bonzini const char *cur;
570baacf047SPaolo Bonzini
571baacf047SPaolo Bonzini cur = *str;
572baacf047SPaolo Bonzini if (!ISA_PCHAR(cur)) {
573a1515161SSu Hang if (empty) {
57442fa2725SSu Hang return 0;
575a1515161SSu Hang }
57642fa2725SSu Hang return 1;
577baacf047SPaolo Bonzini }
578a1515161SSu Hang while (ISA_PCHAR(cur) && (*cur != forbid)) {
579baacf047SPaolo Bonzini NEXT(cur);
580a1515161SSu Hang }
581baacf047SPaolo Bonzini *str = cur;
58242fa2725SSu Hang return 0;
583baacf047SPaolo Bonzini }
584baacf047SPaolo Bonzini
585baacf047SPaolo Bonzini /**
586baacf047SPaolo Bonzini * rfc3986_parse_path_ab_empty:
587baacf047SPaolo Bonzini * @uri: pointer to an URI structure
588baacf047SPaolo Bonzini * @str: the string to analyze
589baacf047SPaolo Bonzini *
590baacf047SPaolo Bonzini * Parse an path absolute or empty and fills in the appropriate fields
591baacf047SPaolo Bonzini * of the @uri structure
592baacf047SPaolo Bonzini *
593baacf047SPaolo Bonzini * path-abempty = *( "/" segment )
594baacf047SPaolo Bonzini *
595baacf047SPaolo Bonzini * Returns 0 or the error code
596baacf047SPaolo Bonzini */
rfc3986_parse_path_ab_empty(URI * uri,const char ** str)597be95adafSSu Hang static int rfc3986_parse_path_ab_empty(URI *uri, const char **str)
598baacf047SPaolo Bonzini {
599baacf047SPaolo Bonzini const char *cur;
600baacf047SPaolo Bonzini int ret;
601baacf047SPaolo Bonzini
602baacf047SPaolo Bonzini cur = *str;
603baacf047SPaolo Bonzini
604baacf047SPaolo Bonzini while (*cur == '/') {
605baacf047SPaolo Bonzini cur++;
606baacf047SPaolo Bonzini ret = rfc3986_parse_segment(&cur, 0, 1);
607a1515161SSu Hang if (ret != 0) {
60842fa2725SSu Hang return ret;
609baacf047SPaolo Bonzini }
610a1515161SSu Hang }
611baacf047SPaolo Bonzini if (uri != NULL) {
61244c2286bSMarkus Armbruster g_free(uri->path);
613baacf047SPaolo Bonzini if (*str != cur) {
614a1515161SSu Hang if (uri->cleanup & 2) {
615baacf047SPaolo Bonzini uri->path = g_strndup(*str, cur - *str);
616a1515161SSu Hang } else {
617baacf047SPaolo Bonzini uri->path = uri_string_unescape(*str, cur - *str, NULL);
618a1515161SSu Hang }
619baacf047SPaolo Bonzini } else {
620baacf047SPaolo Bonzini uri->path = NULL;
621baacf047SPaolo Bonzini }
622baacf047SPaolo Bonzini }
623baacf047SPaolo Bonzini *str = cur;
62442fa2725SSu Hang return 0;
625baacf047SPaolo Bonzini }
626baacf047SPaolo Bonzini
627baacf047SPaolo Bonzini /**
628baacf047SPaolo Bonzini * rfc3986_parse_path_absolute:
629baacf047SPaolo Bonzini * @uri: pointer to an URI structure
630baacf047SPaolo Bonzini * @str: the string to analyze
631baacf047SPaolo Bonzini *
632baacf047SPaolo Bonzini * Parse an path absolute and fills in the appropriate fields
633baacf047SPaolo Bonzini * of the @uri structure
634baacf047SPaolo Bonzini *
635baacf047SPaolo Bonzini * path-absolute = "/" [ segment-nz *( "/" segment ) ]
636baacf047SPaolo Bonzini *
637baacf047SPaolo Bonzini * Returns 0 or the error code
638baacf047SPaolo Bonzini */
rfc3986_parse_path_absolute(URI * uri,const char ** str)639be95adafSSu Hang static int rfc3986_parse_path_absolute(URI *uri, const char **str)
640baacf047SPaolo Bonzini {
641baacf047SPaolo Bonzini const char *cur;
642baacf047SPaolo Bonzini int ret;
643baacf047SPaolo Bonzini
644baacf047SPaolo Bonzini cur = *str;
645baacf047SPaolo Bonzini
646a1515161SSu Hang if (*cur != '/') {
64742fa2725SSu Hang return 1;
648a1515161SSu Hang }
649baacf047SPaolo Bonzini cur++;
650baacf047SPaolo Bonzini ret = rfc3986_parse_segment(&cur, 0, 0);
651baacf047SPaolo Bonzini if (ret == 0) {
652baacf047SPaolo Bonzini while (*cur == '/') {
653baacf047SPaolo Bonzini cur++;
654baacf047SPaolo Bonzini ret = rfc3986_parse_segment(&cur, 0, 1);
655a1515161SSu Hang if (ret != 0) {
65642fa2725SSu Hang return ret;
657baacf047SPaolo Bonzini }
658baacf047SPaolo Bonzini }
659a1515161SSu Hang }
660baacf047SPaolo Bonzini if (uri != NULL) {
66144c2286bSMarkus Armbruster g_free(uri->path);
662baacf047SPaolo Bonzini if (cur != *str) {
663a1515161SSu Hang if (uri->cleanup & 2) {
664baacf047SPaolo Bonzini uri->path = g_strndup(*str, cur - *str);
665a1515161SSu Hang } else {
666baacf047SPaolo Bonzini uri->path = uri_string_unescape(*str, cur - *str, NULL);
667a1515161SSu Hang }
668baacf047SPaolo Bonzini } else {
669baacf047SPaolo Bonzini uri->path = NULL;
670baacf047SPaolo Bonzini }
671baacf047SPaolo Bonzini }
672baacf047SPaolo Bonzini *str = cur;
67342fa2725SSu Hang return 0;
674baacf047SPaolo Bonzini }
675baacf047SPaolo Bonzini
676baacf047SPaolo Bonzini /**
677baacf047SPaolo Bonzini * rfc3986_parse_path_rootless:
678baacf047SPaolo Bonzini * @uri: pointer to an URI structure
679baacf047SPaolo Bonzini * @str: the string to analyze
680baacf047SPaolo Bonzini *
681baacf047SPaolo Bonzini * Parse an path without root and fills in the appropriate fields
682baacf047SPaolo Bonzini * of the @uri structure
683baacf047SPaolo Bonzini *
684baacf047SPaolo Bonzini * path-rootless = segment-nz *( "/" segment )
685baacf047SPaolo Bonzini *
686baacf047SPaolo Bonzini * Returns 0 or the error code
687baacf047SPaolo Bonzini */
rfc3986_parse_path_rootless(URI * uri,const char ** str)688be95adafSSu Hang static int rfc3986_parse_path_rootless(URI *uri, const char **str)
689baacf047SPaolo Bonzini {
690baacf047SPaolo Bonzini const char *cur;
691baacf047SPaolo Bonzini int ret;
692baacf047SPaolo Bonzini
693baacf047SPaolo Bonzini cur = *str;
694baacf047SPaolo Bonzini
695baacf047SPaolo Bonzini ret = rfc3986_parse_segment(&cur, 0, 0);
696a1515161SSu Hang if (ret != 0) {
69742fa2725SSu Hang return ret;
698a1515161SSu Hang }
699baacf047SPaolo Bonzini while (*cur == '/') {
700baacf047SPaolo Bonzini cur++;
701baacf047SPaolo Bonzini ret = rfc3986_parse_segment(&cur, 0, 1);
702a1515161SSu Hang if (ret != 0) {
70342fa2725SSu Hang return ret;
704baacf047SPaolo Bonzini }
705a1515161SSu Hang }
706baacf047SPaolo Bonzini if (uri != NULL) {
70744c2286bSMarkus Armbruster g_free(uri->path);
708baacf047SPaolo Bonzini if (cur != *str) {
709a1515161SSu Hang if (uri->cleanup & 2) {
710baacf047SPaolo Bonzini uri->path = g_strndup(*str, cur - *str);
711a1515161SSu Hang } else {
712baacf047SPaolo Bonzini uri->path = uri_string_unescape(*str, cur - *str, NULL);
713a1515161SSu Hang }
714baacf047SPaolo Bonzini } else {
715baacf047SPaolo Bonzini uri->path = NULL;
716baacf047SPaolo Bonzini }
717baacf047SPaolo Bonzini }
718baacf047SPaolo Bonzini *str = cur;
71942fa2725SSu Hang return 0;
720baacf047SPaolo Bonzini }
721baacf047SPaolo Bonzini
722baacf047SPaolo Bonzini /**
723baacf047SPaolo Bonzini * rfc3986_parse_path_no_scheme:
724baacf047SPaolo Bonzini * @uri: pointer to an URI structure
725baacf047SPaolo Bonzini * @str: the string to analyze
726baacf047SPaolo Bonzini *
727baacf047SPaolo Bonzini * Parse an path which is not a scheme and fills in the appropriate fields
728baacf047SPaolo Bonzini * of the @uri structure
729baacf047SPaolo Bonzini *
730baacf047SPaolo Bonzini * path-noscheme = segment-nz-nc *( "/" segment )
731baacf047SPaolo Bonzini *
732baacf047SPaolo Bonzini * Returns 0 or the error code
733baacf047SPaolo Bonzini */
rfc3986_parse_path_no_scheme(URI * uri,const char ** str)734be95adafSSu Hang static int rfc3986_parse_path_no_scheme(URI *uri, const char **str)
735baacf047SPaolo Bonzini {
736baacf047SPaolo Bonzini const char *cur;
737baacf047SPaolo Bonzini int ret;
738baacf047SPaolo Bonzini
739baacf047SPaolo Bonzini cur = *str;
740baacf047SPaolo Bonzini
741baacf047SPaolo Bonzini ret = rfc3986_parse_segment(&cur, ':', 0);
742a1515161SSu Hang if (ret != 0) {
74342fa2725SSu Hang return ret;
744a1515161SSu Hang }
745baacf047SPaolo Bonzini while (*cur == '/') {
746baacf047SPaolo Bonzini cur++;
747baacf047SPaolo Bonzini ret = rfc3986_parse_segment(&cur, 0, 1);
748a1515161SSu Hang if (ret != 0) {
74942fa2725SSu Hang return ret;
750baacf047SPaolo Bonzini }
751a1515161SSu Hang }
752baacf047SPaolo Bonzini if (uri != NULL) {
75344c2286bSMarkus Armbruster g_free(uri->path);
754baacf047SPaolo Bonzini if (cur != *str) {
755a1515161SSu Hang if (uri->cleanup & 2) {
756baacf047SPaolo Bonzini uri->path = g_strndup(*str, cur - *str);
757a1515161SSu Hang } else {
758baacf047SPaolo Bonzini uri->path = uri_string_unescape(*str, cur - *str, NULL);
759a1515161SSu Hang }
760baacf047SPaolo Bonzini } else {
761baacf047SPaolo Bonzini uri->path = NULL;
762baacf047SPaolo Bonzini }
763baacf047SPaolo Bonzini }
764baacf047SPaolo Bonzini *str = cur;
76542fa2725SSu Hang return 0;
766baacf047SPaolo Bonzini }
767baacf047SPaolo Bonzini
768baacf047SPaolo Bonzini /**
769baacf047SPaolo Bonzini * rfc3986_parse_hier_part:
770baacf047SPaolo Bonzini * @uri: pointer to an URI structure
771baacf047SPaolo Bonzini * @str: the string to analyze
772baacf047SPaolo Bonzini *
773baacf047SPaolo Bonzini * Parse an hierarchical part and fills in the appropriate fields
774baacf047SPaolo Bonzini * of the @uri structure
775baacf047SPaolo Bonzini *
776baacf047SPaolo Bonzini * hier-part = "//" authority path-abempty
777baacf047SPaolo Bonzini * / path-absolute
778baacf047SPaolo Bonzini * / path-rootless
779baacf047SPaolo Bonzini * / path-empty
780baacf047SPaolo Bonzini *
781baacf047SPaolo Bonzini * Returns 0 or the error code
782baacf047SPaolo Bonzini */
rfc3986_parse_hier_part(URI * uri,const char ** str)783be95adafSSu Hang static int rfc3986_parse_hier_part(URI *uri, const char **str)
784baacf047SPaolo Bonzini {
785baacf047SPaolo Bonzini const char *cur;
786baacf047SPaolo Bonzini int ret;
787baacf047SPaolo Bonzini
788baacf047SPaolo Bonzini cur = *str;
789baacf047SPaolo Bonzini
790baacf047SPaolo Bonzini if ((*cur == '/') && (*(cur + 1) == '/')) {
791baacf047SPaolo Bonzini cur += 2;
792baacf047SPaolo Bonzini ret = rfc3986_parse_authority(uri, &cur);
793a1515161SSu Hang if (ret != 0) {
79442fa2725SSu Hang return ret;
795a1515161SSu Hang }
796baacf047SPaolo Bonzini ret = rfc3986_parse_path_ab_empty(uri, &cur);
797a1515161SSu Hang if (ret != 0) {
79842fa2725SSu Hang return ret;
799a1515161SSu Hang }
800baacf047SPaolo Bonzini *str = cur;
80142fa2725SSu Hang return 0;
802baacf047SPaolo Bonzini } else if (*cur == '/') {
803baacf047SPaolo Bonzini ret = rfc3986_parse_path_absolute(uri, &cur);
804a1515161SSu Hang if (ret != 0) {
80542fa2725SSu Hang return ret;
806a1515161SSu Hang }
807baacf047SPaolo Bonzini } else if (ISA_PCHAR(cur)) {
808baacf047SPaolo Bonzini ret = rfc3986_parse_path_rootless(uri, &cur);
809a1515161SSu Hang if (ret != 0) {
81042fa2725SSu Hang return ret;
811a1515161SSu Hang }
812baacf047SPaolo Bonzini } else {
813baacf047SPaolo Bonzini /* path-empty is effectively empty */
814baacf047SPaolo Bonzini if (uri != NULL) {
81544c2286bSMarkus Armbruster g_free(uri->path);
816baacf047SPaolo Bonzini uri->path = NULL;
817baacf047SPaolo Bonzini }
818baacf047SPaolo Bonzini }
819baacf047SPaolo Bonzini *str = cur;
82042fa2725SSu Hang return 0;
821baacf047SPaolo Bonzini }
822baacf047SPaolo Bonzini
823baacf047SPaolo Bonzini /**
824baacf047SPaolo Bonzini * rfc3986_parse_relative_ref:
825baacf047SPaolo Bonzini * @uri: pointer to an URI structure
826baacf047SPaolo Bonzini * @str: the string to analyze
827baacf047SPaolo Bonzini *
828baacf047SPaolo Bonzini * Parse an URI string and fills in the appropriate fields
829baacf047SPaolo Bonzini * of the @uri structure
830baacf047SPaolo Bonzini *
831baacf047SPaolo Bonzini * relative-ref = relative-part [ "?" query ] [ "#" fragment ]
832baacf047SPaolo Bonzini * relative-part = "//" authority path-abempty
833baacf047SPaolo Bonzini * / path-absolute
834baacf047SPaolo Bonzini * / path-noscheme
835baacf047SPaolo Bonzini * / path-empty
836baacf047SPaolo Bonzini *
837baacf047SPaolo Bonzini * Returns 0 or the error code
838baacf047SPaolo Bonzini */
rfc3986_parse_relative_ref(URI * uri,const char * str)839be95adafSSu Hang static int rfc3986_parse_relative_ref(URI *uri, const char *str)
840be95adafSSu Hang {
841baacf047SPaolo Bonzini int ret;
842baacf047SPaolo Bonzini
843baacf047SPaolo Bonzini if ((*str == '/') && (*(str + 1) == '/')) {
844baacf047SPaolo Bonzini str += 2;
845baacf047SPaolo Bonzini ret = rfc3986_parse_authority(uri, &str);
846a1515161SSu Hang if (ret != 0) {
84742fa2725SSu Hang return ret;
848a1515161SSu Hang }
849baacf047SPaolo Bonzini ret = rfc3986_parse_path_ab_empty(uri, &str);
850a1515161SSu Hang if (ret != 0) {
85142fa2725SSu Hang return ret;
852a1515161SSu Hang }
853baacf047SPaolo Bonzini } else if (*str == '/') {
854baacf047SPaolo Bonzini ret = rfc3986_parse_path_absolute(uri, &str);
855a1515161SSu Hang if (ret != 0) {
85642fa2725SSu Hang return ret;
857a1515161SSu Hang }
858baacf047SPaolo Bonzini } else if (ISA_PCHAR(str)) {
859baacf047SPaolo Bonzini ret = rfc3986_parse_path_no_scheme(uri, &str);
860a1515161SSu Hang if (ret != 0) {
86142fa2725SSu Hang return ret;
862a1515161SSu Hang }
863baacf047SPaolo Bonzini } else {
864baacf047SPaolo Bonzini /* path-empty is effectively empty */
865baacf047SPaolo Bonzini if (uri != NULL) {
86644c2286bSMarkus Armbruster g_free(uri->path);
867baacf047SPaolo Bonzini uri->path = NULL;
868baacf047SPaolo Bonzini }
869baacf047SPaolo Bonzini }
870baacf047SPaolo Bonzini
871baacf047SPaolo Bonzini if (*str == '?') {
872baacf047SPaolo Bonzini str++;
873baacf047SPaolo Bonzini ret = rfc3986_parse_query(uri, &str);
874a1515161SSu Hang if (ret != 0) {
87542fa2725SSu Hang return ret;
876baacf047SPaolo Bonzini }
877a1515161SSu Hang }
878baacf047SPaolo Bonzini if (*str == '#') {
879baacf047SPaolo Bonzini str++;
880baacf047SPaolo Bonzini ret = rfc3986_parse_fragment(uri, &str);
881a1515161SSu Hang if (ret != 0) {
88242fa2725SSu Hang return ret;
883baacf047SPaolo Bonzini }
884a1515161SSu Hang }
885baacf047SPaolo Bonzini if (*str != 0) {
886baacf047SPaolo Bonzini uri_clean(uri);
88742fa2725SSu Hang return 1;
888baacf047SPaolo Bonzini }
88942fa2725SSu Hang return 0;
890baacf047SPaolo Bonzini }
891baacf047SPaolo Bonzini
892baacf047SPaolo Bonzini /**
893baacf047SPaolo Bonzini * rfc3986_parse:
894baacf047SPaolo Bonzini * @uri: pointer to an URI structure
895baacf047SPaolo Bonzini * @str: the string to analyze
896baacf047SPaolo Bonzini *
897baacf047SPaolo Bonzini * Parse an URI string and fills in the appropriate fields
898baacf047SPaolo Bonzini * of the @uri structure
899baacf047SPaolo Bonzini *
900baacf047SPaolo Bonzini * scheme ":" hier-part [ "?" query ] [ "#" fragment ]
901baacf047SPaolo Bonzini *
902baacf047SPaolo Bonzini * Returns 0 or the error code
903baacf047SPaolo Bonzini */
rfc3986_parse(URI * uri,const char * str)904be95adafSSu Hang static int rfc3986_parse(URI *uri, const char *str)
905be95adafSSu Hang {
906baacf047SPaolo Bonzini int ret;
907baacf047SPaolo Bonzini
908baacf047SPaolo Bonzini ret = rfc3986_parse_scheme(uri, &str);
909a1515161SSu Hang if (ret != 0) {
91042fa2725SSu Hang return ret;
911a1515161SSu Hang }
912baacf047SPaolo Bonzini if (*str != ':') {
91342fa2725SSu Hang return 1;
914baacf047SPaolo Bonzini }
915baacf047SPaolo Bonzini str++;
916baacf047SPaolo Bonzini ret = rfc3986_parse_hier_part(uri, &str);
917a1515161SSu Hang if (ret != 0) {
91842fa2725SSu Hang return ret;
919a1515161SSu Hang }
920baacf047SPaolo Bonzini if (*str == '?') {
921baacf047SPaolo Bonzini str++;
922baacf047SPaolo Bonzini ret = rfc3986_parse_query(uri, &str);
923a1515161SSu Hang if (ret != 0) {
92442fa2725SSu Hang return ret;
925baacf047SPaolo Bonzini }
926a1515161SSu Hang }
927baacf047SPaolo Bonzini if (*str == '#') {
928baacf047SPaolo Bonzini str++;
929baacf047SPaolo Bonzini ret = rfc3986_parse_fragment(uri, &str);
930a1515161SSu Hang if (ret != 0) {
93142fa2725SSu Hang return ret;
932baacf047SPaolo Bonzini }
933a1515161SSu Hang }
934baacf047SPaolo Bonzini if (*str != 0) {
935baacf047SPaolo Bonzini uri_clean(uri);
93642fa2725SSu Hang return 1;
937baacf047SPaolo Bonzini }
93842fa2725SSu Hang return 0;
939baacf047SPaolo Bonzini }
940baacf047SPaolo Bonzini
941baacf047SPaolo Bonzini /**
942baacf047SPaolo Bonzini * rfc3986_parse_uri_reference:
943baacf047SPaolo Bonzini * @uri: pointer to an URI structure
944baacf047SPaolo Bonzini * @str: the string to analyze
945baacf047SPaolo Bonzini *
946baacf047SPaolo Bonzini * Parse an URI reference string and fills in the appropriate fields
947baacf047SPaolo Bonzini * of the @uri structure
948baacf047SPaolo Bonzini *
949baacf047SPaolo Bonzini * URI-reference = URI / relative-ref
950baacf047SPaolo Bonzini *
951baacf047SPaolo Bonzini * Returns 0 or the error code
952baacf047SPaolo Bonzini */
rfc3986_parse_uri_reference(URI * uri,const char * str)953be95adafSSu Hang static int rfc3986_parse_uri_reference(URI *uri, const char *str)
954be95adafSSu Hang {
955baacf047SPaolo Bonzini int ret;
956baacf047SPaolo Bonzini
957a1515161SSu Hang if (str == NULL) {
95842fa2725SSu Hang return -1;
959a1515161SSu Hang }
960baacf047SPaolo Bonzini uri_clean(uri);
961baacf047SPaolo Bonzini
962baacf047SPaolo Bonzini /*
963baacf047SPaolo Bonzini * Try first to parse absolute refs, then fallback to relative if
964baacf047SPaolo Bonzini * it fails.
965baacf047SPaolo Bonzini */
966baacf047SPaolo Bonzini ret = rfc3986_parse(uri, str);
967baacf047SPaolo Bonzini if (ret != 0) {
968baacf047SPaolo Bonzini uri_clean(uri);
969baacf047SPaolo Bonzini ret = rfc3986_parse_relative_ref(uri, str);
970baacf047SPaolo Bonzini if (ret != 0) {
971baacf047SPaolo Bonzini uri_clean(uri);
97242fa2725SSu Hang return ret;
973baacf047SPaolo Bonzini }
974baacf047SPaolo Bonzini }
97542fa2725SSu Hang return 0;
976baacf047SPaolo Bonzini }
977baacf047SPaolo Bonzini
978baacf047SPaolo Bonzini /**
979baacf047SPaolo Bonzini * uri_parse:
980baacf047SPaolo Bonzini * @str: the URI string to analyze
981baacf047SPaolo Bonzini *
982baacf047SPaolo Bonzini * Parse an URI based on RFC 3986
983baacf047SPaolo Bonzini *
984baacf047SPaolo Bonzini * URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ]
985baacf047SPaolo Bonzini *
986baacf047SPaolo Bonzini * Returns a newly built URI or NULL in case of error
987baacf047SPaolo Bonzini */
uri_parse(const char * str)988be95adafSSu Hang URI *uri_parse(const char *str)
989be95adafSSu Hang {
990baacf047SPaolo Bonzini URI *uri;
991baacf047SPaolo Bonzini int ret;
992baacf047SPaolo Bonzini
993a1515161SSu Hang if (str == NULL) {
99442fa2725SSu Hang return NULL;
995a1515161SSu Hang }
996baacf047SPaolo Bonzini uri = uri_new();
997baacf047SPaolo Bonzini ret = rfc3986_parse_uri_reference(uri, str);
998baacf047SPaolo Bonzini if (ret) {
999baacf047SPaolo Bonzini uri_free(uri);
100042fa2725SSu Hang return NULL;
1001baacf047SPaolo Bonzini }
100242fa2725SSu Hang return uri;
1003baacf047SPaolo Bonzini }
1004baacf047SPaolo Bonzini
1005baacf047SPaolo Bonzini /**
1006baacf047SPaolo Bonzini * uri_parse_into:
1007baacf047SPaolo Bonzini * @uri: pointer to an URI structure
1008baacf047SPaolo Bonzini * @str: the string to analyze
1009baacf047SPaolo Bonzini *
1010baacf047SPaolo Bonzini * Parse an URI reference string based on RFC 3986 and fills in the
1011baacf047SPaolo Bonzini * appropriate fields of the @uri structure
1012baacf047SPaolo Bonzini *
1013baacf047SPaolo Bonzini * URI-reference = URI / relative-ref
1014baacf047SPaolo Bonzini *
1015baacf047SPaolo Bonzini * Returns 0 or the error code
1016baacf047SPaolo Bonzini */
uri_parse_into(URI * uri,const char * str)1017be95adafSSu Hang int uri_parse_into(URI *uri, const char *str)
1018be95adafSSu Hang {
101942fa2725SSu Hang return rfc3986_parse_uri_reference(uri, str);
1020baacf047SPaolo Bonzini }
1021baacf047SPaolo Bonzini
1022baacf047SPaolo Bonzini /**
1023baacf047SPaolo Bonzini * uri_parse_raw:
1024baacf047SPaolo Bonzini * @str: the URI string to analyze
1025baacf047SPaolo Bonzini * @raw: if 1 unescaping of URI pieces are disabled
1026baacf047SPaolo Bonzini *
1027baacf047SPaolo Bonzini * Parse an URI but allows to keep intact the original fragments.
1028baacf047SPaolo Bonzini *
1029baacf047SPaolo Bonzini * URI-reference = URI / relative-ref
1030baacf047SPaolo Bonzini *
1031baacf047SPaolo Bonzini * Returns a newly built URI or NULL in case of error
1032baacf047SPaolo Bonzini */
uri_parse_raw(const char * str,int raw)1033be95adafSSu Hang URI *uri_parse_raw(const char *str, int raw)
1034be95adafSSu Hang {
1035baacf047SPaolo Bonzini URI *uri;
1036baacf047SPaolo Bonzini int ret;
1037baacf047SPaolo Bonzini
1038a1515161SSu Hang if (str == NULL) {
103942fa2725SSu Hang return NULL;
1040a1515161SSu Hang }
1041baacf047SPaolo Bonzini uri = uri_new();
1042baacf047SPaolo Bonzini if (raw) {
1043baacf047SPaolo Bonzini uri->cleanup |= 2;
1044baacf047SPaolo Bonzini }
1045baacf047SPaolo Bonzini ret = uri_parse_into(uri, str);
1046baacf047SPaolo Bonzini if (ret) {
1047baacf047SPaolo Bonzini uri_free(uri);
104842fa2725SSu Hang return NULL;
1049baacf047SPaolo Bonzini }
105042fa2725SSu Hang return uri;
1051baacf047SPaolo Bonzini }
1052baacf047SPaolo Bonzini
1053baacf047SPaolo Bonzini /************************************************************************
1054baacf047SPaolo Bonzini * *
1055baacf047SPaolo Bonzini * Generic URI structure functions *
1056baacf047SPaolo Bonzini * *
1057baacf047SPaolo Bonzini ************************************************************************/
1058baacf047SPaolo Bonzini
1059baacf047SPaolo Bonzini /**
1060baacf047SPaolo Bonzini * uri_new:
1061baacf047SPaolo Bonzini *
1062baacf047SPaolo Bonzini * Simply creates an empty URI
1063baacf047SPaolo Bonzini *
1064baacf047SPaolo Bonzini * Returns the new structure or NULL in case of error
1065baacf047SPaolo Bonzini */
uri_new(void)1066be95adafSSu Hang URI *uri_new(void)
1067be95adafSSu Hang {
10684a4ff4c5SLaurent Vivier return g_new0(URI, 1);
1069baacf047SPaolo Bonzini }
1070baacf047SPaolo Bonzini
1071baacf047SPaolo Bonzini /**
1072baacf047SPaolo Bonzini * realloc2n:
1073baacf047SPaolo Bonzini *
1074baacf047SPaolo Bonzini * Function to handle properly a reallocation when saving an URI
1075baacf047SPaolo Bonzini * Also imposes some limit on the length of an URI string output
1076baacf047SPaolo Bonzini */
realloc2n(char * ret,int * max)1077be95adafSSu Hang static char *realloc2n(char *ret, int *max)
1078be95adafSSu Hang {
1079baacf047SPaolo Bonzini char *temp;
1080baacf047SPaolo Bonzini int tmp;
1081baacf047SPaolo Bonzini
1082baacf047SPaolo Bonzini tmp = *max * 2;
1083baacf047SPaolo Bonzini temp = g_realloc(ret, (tmp + 1));
1084baacf047SPaolo Bonzini *max = tmp;
108542fa2725SSu Hang return temp;
1086baacf047SPaolo Bonzini }
1087baacf047SPaolo Bonzini
1088baacf047SPaolo Bonzini /**
1089baacf047SPaolo Bonzini * uri_to_string:
1090baacf047SPaolo Bonzini * @uri: pointer to an URI
1091baacf047SPaolo Bonzini *
1092baacf047SPaolo Bonzini * Save the URI as an escaped string
1093baacf047SPaolo Bonzini *
1094baacf047SPaolo Bonzini * Returns a new string (to be deallocated by caller)
1095baacf047SPaolo Bonzini */
uri_to_string(URI * uri)1096be95adafSSu Hang char *uri_to_string(URI *uri)
1097be95adafSSu Hang {
1098baacf047SPaolo Bonzini char *ret = NULL;
1099baacf047SPaolo Bonzini char *temp;
1100baacf047SPaolo Bonzini const char *p;
1101baacf047SPaolo Bonzini int len;
1102baacf047SPaolo Bonzini int max;
1103baacf047SPaolo Bonzini
1104a1515161SSu Hang if (uri == NULL) {
110542fa2725SSu Hang return NULL;
1106a1515161SSu Hang }
1107baacf047SPaolo Bonzini
1108baacf047SPaolo Bonzini max = 80;
1109baacf047SPaolo Bonzini ret = g_malloc(max + 1);
1110baacf047SPaolo Bonzini len = 0;
1111baacf047SPaolo Bonzini
1112baacf047SPaolo Bonzini if (uri->scheme != NULL) {
1113baacf047SPaolo Bonzini p = uri->scheme;
1114baacf047SPaolo Bonzini while (*p != 0) {
1115baacf047SPaolo Bonzini if (len >= max) {
1116baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1117baacf047SPaolo Bonzini ret = temp;
1118baacf047SPaolo Bonzini }
1119baacf047SPaolo Bonzini ret[len++] = *p++;
1120baacf047SPaolo Bonzini }
1121baacf047SPaolo Bonzini if (len >= max) {
1122baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1123baacf047SPaolo Bonzini ret = temp;
1124baacf047SPaolo Bonzini }
1125baacf047SPaolo Bonzini ret[len++] = ':';
1126baacf047SPaolo Bonzini }
1127baacf047SPaolo Bonzini if (uri->opaque != NULL) {
1128baacf047SPaolo Bonzini p = uri->opaque;
1129baacf047SPaolo Bonzini while (*p != 0) {
1130baacf047SPaolo Bonzini if (len + 3 >= max) {
1131baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1132baacf047SPaolo Bonzini ret = temp;
1133baacf047SPaolo Bonzini }
1134a1515161SSu Hang if (IS_RESERVED(*(p)) || IS_UNRESERVED(*(p))) {
1135baacf047SPaolo Bonzini ret[len++] = *p++;
1136a1515161SSu Hang } else {
1137baacf047SPaolo Bonzini int val = *(unsigned char *)p++;
1138baacf047SPaolo Bonzini int hi = val / 0x10, lo = val % 0x10;
1139baacf047SPaolo Bonzini ret[len++] = '%';
1140baacf047SPaolo Bonzini ret[len++] = hi + (hi > 9 ? 'A' - 10 : '0');
1141baacf047SPaolo Bonzini ret[len++] = lo + (lo > 9 ? 'A' - 10 : '0');
1142baacf047SPaolo Bonzini }
1143baacf047SPaolo Bonzini }
1144baacf047SPaolo Bonzini } else {
1145baacf047SPaolo Bonzini if (uri->server != NULL) {
1146baacf047SPaolo Bonzini if (len + 3 >= max) {
1147baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1148baacf047SPaolo Bonzini ret = temp;
1149baacf047SPaolo Bonzini }
1150baacf047SPaolo Bonzini ret[len++] = '/';
1151baacf047SPaolo Bonzini ret[len++] = '/';
1152baacf047SPaolo Bonzini if (uri->user != NULL) {
1153baacf047SPaolo Bonzini p = uri->user;
1154baacf047SPaolo Bonzini while (*p != 0) {
1155baacf047SPaolo Bonzini if (len + 3 >= max) {
1156baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1157baacf047SPaolo Bonzini ret = temp;
1158baacf047SPaolo Bonzini }
1159be95adafSSu Hang if ((IS_UNRESERVED(*(p))) || ((*(p) == ';')) ||
1160be95adafSSu Hang ((*(p) == ':')) || ((*(p) == '&')) || ((*(p) == '=')) ||
1161a1515161SSu Hang ((*(p) == '+')) || ((*(p) == '$')) || ((*(p) == ','))) {
1162baacf047SPaolo Bonzini ret[len++] = *p++;
1163a1515161SSu Hang } else {
1164baacf047SPaolo Bonzini int val = *(unsigned char *)p++;
1165baacf047SPaolo Bonzini int hi = val / 0x10, lo = val % 0x10;
1166baacf047SPaolo Bonzini ret[len++] = '%';
1167baacf047SPaolo Bonzini ret[len++] = hi + (hi > 9 ? 'A' - 10 : '0');
1168baacf047SPaolo Bonzini ret[len++] = lo + (lo > 9 ? 'A' - 10 : '0');
1169baacf047SPaolo Bonzini }
1170baacf047SPaolo Bonzini }
1171baacf047SPaolo Bonzini if (len + 3 >= max) {
1172baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1173baacf047SPaolo Bonzini ret = temp;
1174baacf047SPaolo Bonzini }
1175baacf047SPaolo Bonzini ret[len++] = '@';
1176baacf047SPaolo Bonzini }
1177baacf047SPaolo Bonzini p = uri->server;
1178baacf047SPaolo Bonzini while (*p != 0) {
1179baacf047SPaolo Bonzini if (len >= max) {
1180baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1181baacf047SPaolo Bonzini ret = temp;
1182baacf047SPaolo Bonzini }
1183baacf047SPaolo Bonzini ret[len++] = *p++;
1184baacf047SPaolo Bonzini }
1185baacf047SPaolo Bonzini if (uri->port > 0) {
1186baacf047SPaolo Bonzini if (len + 10 >= max) {
1187baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1188baacf047SPaolo Bonzini ret = temp;
1189baacf047SPaolo Bonzini }
1190baacf047SPaolo Bonzini len += snprintf(&ret[len], max - len, ":%d", uri->port);
1191baacf047SPaolo Bonzini }
1192baacf047SPaolo Bonzini } else if (uri->authority != NULL) {
1193baacf047SPaolo Bonzini if (len + 3 >= max) {
1194baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1195baacf047SPaolo Bonzini ret = temp;
1196baacf047SPaolo Bonzini }
1197baacf047SPaolo Bonzini ret[len++] = '/';
1198baacf047SPaolo Bonzini ret[len++] = '/';
1199baacf047SPaolo Bonzini p = uri->authority;
1200baacf047SPaolo Bonzini while (*p != 0) {
1201baacf047SPaolo Bonzini if (len + 3 >= max) {
1202baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1203baacf047SPaolo Bonzini ret = temp;
1204baacf047SPaolo Bonzini }
1205be95adafSSu Hang if ((IS_UNRESERVED(*(p))) || ((*(p) == '$')) ||
1206be95adafSSu Hang ((*(p) == ',')) || ((*(p) == ';')) || ((*(p) == ':')) ||
1207be95adafSSu Hang ((*(p) == '@')) || ((*(p) == '&')) || ((*(p) == '=')) ||
1208a1515161SSu Hang ((*(p) == '+'))) {
1209baacf047SPaolo Bonzini ret[len++] = *p++;
1210a1515161SSu Hang } else {
1211baacf047SPaolo Bonzini int val = *(unsigned char *)p++;
1212baacf047SPaolo Bonzini int hi = val / 0x10, lo = val % 0x10;
1213baacf047SPaolo Bonzini ret[len++] = '%';
1214baacf047SPaolo Bonzini ret[len++] = hi + (hi > 9 ? 'A' - 10 : '0');
1215baacf047SPaolo Bonzini ret[len++] = lo + (lo > 9 ? 'A' - 10 : '0');
1216baacf047SPaolo Bonzini }
1217baacf047SPaolo Bonzini }
1218baacf047SPaolo Bonzini } else if (uri->scheme != NULL) {
1219baacf047SPaolo Bonzini if (len + 3 >= max) {
1220baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1221baacf047SPaolo Bonzini ret = temp;
1222baacf047SPaolo Bonzini }
1223baacf047SPaolo Bonzini ret[len++] = '/';
1224baacf047SPaolo Bonzini ret[len++] = '/';
1225baacf047SPaolo Bonzini }
1226baacf047SPaolo Bonzini if (uri->path != NULL) {
1227baacf047SPaolo Bonzini p = uri->path;
1228baacf047SPaolo Bonzini /*
1229baacf047SPaolo Bonzini * the colon in file:///d: should not be escaped or
1230baacf047SPaolo Bonzini * Windows accesses fail later.
1231baacf047SPaolo Bonzini */
1232be95adafSSu Hang if ((uri->scheme != NULL) && (p[0] == '/') &&
1233baacf047SPaolo Bonzini (((p[1] >= 'a') && (p[1] <= 'z')) ||
1234baacf047SPaolo Bonzini ((p[1] >= 'A') && (p[1] <= 'Z'))) &&
1235be95adafSSu Hang (p[2] == ':') && (!strcmp(uri->scheme, "file"))) {
1236baacf047SPaolo Bonzini if (len + 3 >= max) {
1237baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1238baacf047SPaolo Bonzini ret = temp;
1239baacf047SPaolo Bonzini }
1240baacf047SPaolo Bonzini ret[len++] = *p++;
1241baacf047SPaolo Bonzini ret[len++] = *p++;
1242baacf047SPaolo Bonzini ret[len++] = *p++;
1243baacf047SPaolo Bonzini }
1244baacf047SPaolo Bonzini while (*p != 0) {
1245baacf047SPaolo Bonzini if (len + 3 >= max) {
1246baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1247baacf047SPaolo Bonzini ret = temp;
1248baacf047SPaolo Bonzini }
1249baacf047SPaolo Bonzini if ((IS_UNRESERVED(*(p))) || ((*(p) == '/')) ||
1250baacf047SPaolo Bonzini ((*(p) == ';')) || ((*(p) == '@')) || ((*(p) == '&')) ||
1251baacf047SPaolo Bonzini ((*(p) == '=')) || ((*(p) == '+')) || ((*(p) == '$')) ||
1252a1515161SSu Hang ((*(p) == ','))) {
1253baacf047SPaolo Bonzini ret[len++] = *p++;
1254a1515161SSu Hang } else {
1255baacf047SPaolo Bonzini int val = *(unsigned char *)p++;
1256baacf047SPaolo Bonzini int hi = val / 0x10, lo = val % 0x10;
1257baacf047SPaolo Bonzini ret[len++] = '%';
1258baacf047SPaolo Bonzini ret[len++] = hi + (hi > 9 ? 'A' - 10 : '0');
1259baacf047SPaolo Bonzini ret[len++] = lo + (lo > 9 ? 'A' - 10 : '0');
1260baacf047SPaolo Bonzini }
1261baacf047SPaolo Bonzini }
1262baacf047SPaolo Bonzini }
1263baacf047SPaolo Bonzini if (uri->query != NULL) {
1264baacf047SPaolo Bonzini if (len + 1 >= max) {
1265baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1266baacf047SPaolo Bonzini ret = temp;
1267baacf047SPaolo Bonzini }
1268baacf047SPaolo Bonzini ret[len++] = '?';
1269baacf047SPaolo Bonzini p = uri->query;
1270baacf047SPaolo Bonzini while (*p != 0) {
1271baacf047SPaolo Bonzini if (len + 1 >= max) {
1272baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1273baacf047SPaolo Bonzini ret = temp;
1274baacf047SPaolo Bonzini }
1275baacf047SPaolo Bonzini ret[len++] = *p++;
1276baacf047SPaolo Bonzini }
1277baacf047SPaolo Bonzini }
1278baacf047SPaolo Bonzini }
1279baacf047SPaolo Bonzini if (uri->fragment != NULL) {
1280baacf047SPaolo Bonzini if (len + 3 >= max) {
1281baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1282baacf047SPaolo Bonzini ret = temp;
1283baacf047SPaolo Bonzini }
1284baacf047SPaolo Bonzini ret[len++] = '#';
1285baacf047SPaolo Bonzini p = uri->fragment;
1286baacf047SPaolo Bonzini while (*p != 0) {
1287baacf047SPaolo Bonzini if (len + 3 >= max) {
1288baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1289baacf047SPaolo Bonzini ret = temp;
1290baacf047SPaolo Bonzini }
1291a1515161SSu Hang if ((IS_UNRESERVED(*(p))) || (IS_RESERVED(*(p)))) {
1292baacf047SPaolo Bonzini ret[len++] = *p++;
1293a1515161SSu Hang } else {
1294baacf047SPaolo Bonzini int val = *(unsigned char *)p++;
1295baacf047SPaolo Bonzini int hi = val / 0x10, lo = val % 0x10;
1296baacf047SPaolo Bonzini ret[len++] = '%';
1297baacf047SPaolo Bonzini ret[len++] = hi + (hi > 9 ? 'A' - 10 : '0');
1298baacf047SPaolo Bonzini ret[len++] = lo + (lo > 9 ? 'A' - 10 : '0');
1299baacf047SPaolo Bonzini }
1300baacf047SPaolo Bonzini }
1301baacf047SPaolo Bonzini }
1302baacf047SPaolo Bonzini if (len >= max) {
1303baacf047SPaolo Bonzini temp = realloc2n(ret, &max);
1304baacf047SPaolo Bonzini ret = temp;
1305baacf047SPaolo Bonzini }
1306baacf047SPaolo Bonzini ret[len] = 0;
130742fa2725SSu Hang return ret;
1308baacf047SPaolo Bonzini }
1309baacf047SPaolo Bonzini
1310baacf047SPaolo Bonzini /**
1311baacf047SPaolo Bonzini * uri_clean:
1312baacf047SPaolo Bonzini * @uri: pointer to an URI
1313baacf047SPaolo Bonzini *
1314baacf047SPaolo Bonzini * Make sure the URI struct is free of content
1315baacf047SPaolo Bonzini */
uri_clean(URI * uri)1316be95adafSSu Hang static void uri_clean(URI *uri)
1317be95adafSSu Hang {
1318a1515161SSu Hang if (uri == NULL) {
1319be95adafSSu Hang return;
1320a1515161SSu Hang }
1321baacf047SPaolo Bonzini
132244c2286bSMarkus Armbruster g_free(uri->scheme);
1323baacf047SPaolo Bonzini uri->scheme = NULL;
132444c2286bSMarkus Armbruster g_free(uri->server);
1325baacf047SPaolo Bonzini uri->server = NULL;
132644c2286bSMarkus Armbruster g_free(uri->user);
1327baacf047SPaolo Bonzini uri->user = NULL;
132844c2286bSMarkus Armbruster g_free(uri->path);
1329baacf047SPaolo Bonzini uri->path = NULL;
133044c2286bSMarkus Armbruster g_free(uri->fragment);
1331baacf047SPaolo Bonzini uri->fragment = NULL;
133244c2286bSMarkus Armbruster g_free(uri->opaque);
1333baacf047SPaolo Bonzini uri->opaque = NULL;
133444c2286bSMarkus Armbruster g_free(uri->authority);
1335baacf047SPaolo Bonzini uri->authority = NULL;
133644c2286bSMarkus Armbruster g_free(uri->query);
1337baacf047SPaolo Bonzini uri->query = NULL;
1338baacf047SPaolo Bonzini }
1339baacf047SPaolo Bonzini
1340baacf047SPaolo Bonzini /**
1341baacf047SPaolo Bonzini * uri_free:
1342c2615bdfSHeinrich Schuchardt * @uri: pointer to an URI, NULL is ignored
1343baacf047SPaolo Bonzini *
1344baacf047SPaolo Bonzini * Free up the URI struct
1345baacf047SPaolo Bonzini */
uri_free(URI * uri)1346be95adafSSu Hang void uri_free(URI *uri)
1347be95adafSSu Hang {
1348baacf047SPaolo Bonzini uri_clean(uri);
1349baacf047SPaolo Bonzini g_free(uri);
1350baacf047SPaolo Bonzini }
1351baacf047SPaolo Bonzini
1352baacf047SPaolo Bonzini /************************************************************************
1353baacf047SPaolo Bonzini * *
1354baacf047SPaolo Bonzini * Helper functions *
1355baacf047SPaolo Bonzini * *
1356baacf047SPaolo Bonzini ************************************************************************/
1357baacf047SPaolo Bonzini
1358baacf047SPaolo Bonzini /**
1359baacf047SPaolo Bonzini * normalize_uri_path:
1360baacf047SPaolo Bonzini * @path: pointer to the path string
1361baacf047SPaolo Bonzini *
1362baacf047SPaolo Bonzini * Applies the 5 normalization steps to a path string--that is, RFC 2396
1363baacf047SPaolo Bonzini * Section 5.2, steps 6.c through 6.g.
1364baacf047SPaolo Bonzini *
1365baacf047SPaolo Bonzini * Normalization occurs directly on the string, no new allocation is done
1366baacf047SPaolo Bonzini *
1367baacf047SPaolo Bonzini * Returns 0 or an error code
1368baacf047SPaolo Bonzini */
normalize_uri_path(char * path)1369be95adafSSu Hang static int normalize_uri_path(char *path)
1370be95adafSSu Hang {
1371baacf047SPaolo Bonzini char *cur, *out;
1372baacf047SPaolo Bonzini
1373a1515161SSu Hang if (path == NULL) {
137442fa2725SSu Hang return -1;
1375a1515161SSu Hang }
1376baacf047SPaolo Bonzini
1377baacf047SPaolo Bonzini /* Skip all initial "/" chars. We want to get to the beginning of the
1378baacf047SPaolo Bonzini * first non-empty segment.
1379baacf047SPaolo Bonzini */
1380baacf047SPaolo Bonzini cur = path;
1381a1515161SSu Hang while (cur[0] == '/') {
1382baacf047SPaolo Bonzini ++cur;
1383a1515161SSu Hang }
1384a1515161SSu Hang if (cur[0] == '\0') {
138542fa2725SSu Hang return 0;
1386a1515161SSu Hang }
1387baacf047SPaolo Bonzini
1388baacf047SPaolo Bonzini /* Keep everything we've seen so far. */
1389baacf047SPaolo Bonzini out = cur;
1390baacf047SPaolo Bonzini
1391baacf047SPaolo Bonzini /*
1392baacf047SPaolo Bonzini * Analyze each segment in sequence for cases (c) and (d).
1393baacf047SPaolo Bonzini */
1394baacf047SPaolo Bonzini while (cur[0] != '\0') {
1395baacf047SPaolo Bonzini /*
1396baacf047SPaolo Bonzini * c) All occurrences of "./", where "." is a complete path segment,
1397baacf047SPaolo Bonzini * are removed from the buffer string.
1398baacf047SPaolo Bonzini */
1399baacf047SPaolo Bonzini if ((cur[0] == '.') && (cur[1] == '/')) {
1400baacf047SPaolo Bonzini cur += 2;
1401baacf047SPaolo Bonzini /* '//' normalization should be done at this point too */
1402a1515161SSu Hang while (cur[0] == '/') {
1403baacf047SPaolo Bonzini cur++;
1404a1515161SSu Hang }
1405baacf047SPaolo Bonzini continue;
1406baacf047SPaolo Bonzini }
1407baacf047SPaolo Bonzini
1408baacf047SPaolo Bonzini /*
1409baacf047SPaolo Bonzini * d) If the buffer string ends with "." as a complete path segment,
1410baacf047SPaolo Bonzini * that "." is removed.
1411baacf047SPaolo Bonzini */
1412a1515161SSu Hang if ((cur[0] == '.') && (cur[1] == '\0')) {
1413baacf047SPaolo Bonzini break;
1414a1515161SSu Hang }
1415baacf047SPaolo Bonzini
1416baacf047SPaolo Bonzini /* Otherwise keep the segment. */
1417baacf047SPaolo Bonzini while (cur[0] != '/') {
1418a1515161SSu Hang if (cur[0] == '\0') {
1419baacf047SPaolo Bonzini goto done_cd;
1420a1515161SSu Hang }
1421baacf047SPaolo Bonzini (out++)[0] = (cur++)[0];
1422baacf047SPaolo Bonzini }
1423baacf047SPaolo Bonzini /* nomalize // */
1424a1515161SSu Hang while ((cur[0] == '/') && (cur[1] == '/')) {
1425baacf047SPaolo Bonzini cur++;
1426a1515161SSu Hang }
1427baacf047SPaolo Bonzini
1428baacf047SPaolo Bonzini (out++)[0] = (cur++)[0];
1429baacf047SPaolo Bonzini }
1430baacf047SPaolo Bonzini done_cd:
1431baacf047SPaolo Bonzini out[0] = '\0';
1432baacf047SPaolo Bonzini
1433baacf047SPaolo Bonzini /* Reset to the beginning of the first segment for the next sequence. */
1434baacf047SPaolo Bonzini cur = path;
1435a1515161SSu Hang while (cur[0] == '/') {
1436baacf047SPaolo Bonzini ++cur;
1437a1515161SSu Hang }
1438a1515161SSu Hang if (cur[0] == '\0') {
143942fa2725SSu Hang return 0;
1440a1515161SSu Hang }
1441baacf047SPaolo Bonzini
1442baacf047SPaolo Bonzini /*
1443baacf047SPaolo Bonzini * Analyze each segment in sequence for cases (e) and (f).
1444baacf047SPaolo Bonzini *
1445baacf047SPaolo Bonzini * e) All occurrences of "<segment>/../", where <segment> is a
1446baacf047SPaolo Bonzini * complete path segment not equal to "..", are removed from the
1447baacf047SPaolo Bonzini * buffer string. Removal of these path segments is performed
1448baacf047SPaolo Bonzini * iteratively, removing the leftmost matching pattern on each
1449baacf047SPaolo Bonzini * iteration, until no matching pattern remains.
1450baacf047SPaolo Bonzini *
1451baacf047SPaolo Bonzini * f) If the buffer string ends with "<segment>/..", where <segment>
1452baacf047SPaolo Bonzini * is a complete path segment not equal to "..", that
1453baacf047SPaolo Bonzini * "<segment>/.." is removed.
1454baacf047SPaolo Bonzini *
1455baacf047SPaolo Bonzini * To satisfy the "iterative" clause in (e), we need to collapse the
1456baacf047SPaolo Bonzini * string every time we find something that needs to be removed. Thus,
1457baacf047SPaolo Bonzini * we don't need to keep two pointers into the string: we only need a
1458baacf047SPaolo Bonzini * "current position" pointer.
1459baacf047SPaolo Bonzini */
1460baacf047SPaolo Bonzini while (1) {
1461baacf047SPaolo Bonzini char *segp, *tmp;
1462baacf047SPaolo Bonzini
1463baacf047SPaolo Bonzini /* At the beginning of each iteration of this loop, "cur" points to
1464baacf047SPaolo Bonzini * the first character of the segment we want to examine.
1465baacf047SPaolo Bonzini */
1466baacf047SPaolo Bonzini
1467baacf047SPaolo Bonzini /* Find the end of the current segment. */
1468baacf047SPaolo Bonzini segp = cur;
1469a1515161SSu Hang while ((segp[0] != '/') && (segp[0] != '\0')) {
1470baacf047SPaolo Bonzini ++segp;
1471a1515161SSu Hang }
1472baacf047SPaolo Bonzini
1473baacf047SPaolo Bonzini /* If this is the last segment, we're done (we need at least two
1474baacf047SPaolo Bonzini * segments to meet the criteria for the (e) and (f) cases).
1475baacf047SPaolo Bonzini */
1476a1515161SSu Hang if (segp[0] == '\0') {
1477baacf047SPaolo Bonzini break;
1478a1515161SSu Hang }
1479baacf047SPaolo Bonzini
1480baacf047SPaolo Bonzini /* If the first segment is "..", or if the next segment _isn't_ "..",
1481baacf047SPaolo Bonzini * keep this segment and try the next one.
1482baacf047SPaolo Bonzini */
1483baacf047SPaolo Bonzini ++segp;
1484be95adafSSu Hang if (((cur[0] == '.') && (cur[1] == '.') && (segp == cur + 3)) ||
1485be95adafSSu Hang ((segp[0] != '.') || (segp[1] != '.') ||
1486be95adafSSu Hang ((segp[2] != '/') && (segp[2] != '\0')))) {
1487baacf047SPaolo Bonzini cur = segp;
1488baacf047SPaolo Bonzini continue;
1489baacf047SPaolo Bonzini }
1490baacf047SPaolo Bonzini
1491baacf047SPaolo Bonzini /* If we get here, remove this segment and the next one and back up
1492baacf047SPaolo Bonzini * to the previous segment (if there is one), to implement the
1493baacf047SPaolo Bonzini * "iteratively" clause. It's pretty much impossible to back up
1494baacf047SPaolo Bonzini * while maintaining two pointers into the buffer, so just compact
1495baacf047SPaolo Bonzini * the whole buffer now.
1496baacf047SPaolo Bonzini */
1497baacf047SPaolo Bonzini
1498baacf047SPaolo Bonzini /* If this is the end of the buffer, we're done. */
1499baacf047SPaolo Bonzini if (segp[2] == '\0') {
1500baacf047SPaolo Bonzini cur[0] = '\0';
1501baacf047SPaolo Bonzini break;
1502baacf047SPaolo Bonzini }
1503baacf047SPaolo Bonzini /* Valgrind complained, strcpy(cur, segp + 3); */
1504baacf047SPaolo Bonzini /* string will overlap, do not use strcpy */
1505baacf047SPaolo Bonzini tmp = cur;
1506baacf047SPaolo Bonzini segp += 3;
1507a1515161SSu Hang while ((*tmp++ = *segp++) != 0) {
1508a1515161SSu Hang /* No further work */
1509a1515161SSu Hang }
1510baacf047SPaolo Bonzini
1511baacf047SPaolo Bonzini /* If there are no previous segments, then keep going from here. */
1512baacf047SPaolo Bonzini segp = cur;
1513a1515161SSu Hang while ((segp > path) && ((--segp)[0] == '/')) {
1514a1515161SSu Hang /* No further work */
1515a1515161SSu Hang }
1516a1515161SSu Hang if (segp == path) {
1517baacf047SPaolo Bonzini continue;
1518a1515161SSu Hang }
1519baacf047SPaolo Bonzini
1520baacf047SPaolo Bonzini /* "segp" is pointing to the end of a previous segment; find it's
1521baacf047SPaolo Bonzini * start. We need to back up to the previous segment and start
1522baacf047SPaolo Bonzini * over with that to handle things like "foo/bar/../..". If we
1523baacf047SPaolo Bonzini * don't do this, then on the first pass we'll remove the "bar/..",
1524baacf047SPaolo Bonzini * but be pointing at the second ".." so we won't realize we can also
1525baacf047SPaolo Bonzini * remove the "foo/..".
1526baacf047SPaolo Bonzini */
1527baacf047SPaolo Bonzini cur = segp;
1528a1515161SSu Hang while ((cur > path) && (cur[-1] != '/')) {
1529baacf047SPaolo Bonzini --cur;
1530baacf047SPaolo Bonzini }
1531a1515161SSu Hang }
1532baacf047SPaolo Bonzini out[0] = '\0';
1533baacf047SPaolo Bonzini
1534baacf047SPaolo Bonzini /*
1535baacf047SPaolo Bonzini * g) If the resulting buffer string still begins with one or more
1536baacf047SPaolo Bonzini * complete path segments of "..", then the reference is
1537baacf047SPaolo Bonzini * considered to be in error. Implementations may handle this
1538baacf047SPaolo Bonzini * error by retaining these components in the resolved path (i.e.,
1539baacf047SPaolo Bonzini * treating them as part of the final URI), by removing them from
1540baacf047SPaolo Bonzini * the resolved path (i.e., discarding relative levels above the
1541baacf047SPaolo Bonzini * root), or by avoiding traversal of the reference.
1542baacf047SPaolo Bonzini *
1543baacf047SPaolo Bonzini * We discard them from the final path.
1544baacf047SPaolo Bonzini */
1545baacf047SPaolo Bonzini if (path[0] == '/') {
1546baacf047SPaolo Bonzini cur = path;
1547be95adafSSu Hang while ((cur[0] == '/') && (cur[1] == '.') && (cur[2] == '.') &&
1548a1515161SSu Hang ((cur[3] == '/') || (cur[3] == '\0'))) {
1549baacf047SPaolo Bonzini cur += 3;
1550a1515161SSu Hang }
1551baacf047SPaolo Bonzini
1552baacf047SPaolo Bonzini if (cur != path) {
1553baacf047SPaolo Bonzini out = path;
1554a1515161SSu Hang while (cur[0] != '\0') {
1555baacf047SPaolo Bonzini (out++)[0] = (cur++)[0];
1556a1515161SSu Hang }
1557baacf047SPaolo Bonzini out[0] = 0;
1558baacf047SPaolo Bonzini }
1559baacf047SPaolo Bonzini }
1560baacf047SPaolo Bonzini
156142fa2725SSu Hang return 0;
1562baacf047SPaolo Bonzini }
1563baacf047SPaolo Bonzini
is_hex(char c)1564be95adafSSu Hang static int is_hex(char c)
1565be95adafSSu Hang {
1566be95adafSSu Hang if (((c >= '0') && (c <= '9')) || ((c >= 'a') && (c <= 'f')) ||
1567a1515161SSu Hang ((c >= 'A') && (c <= 'F'))) {
156842fa2725SSu Hang return 1;
1569a1515161SSu Hang }
157042fa2725SSu Hang return 0;
1571baacf047SPaolo Bonzini }
1572baacf047SPaolo Bonzini
1573baacf047SPaolo Bonzini /**
1574baacf047SPaolo Bonzini * uri_string_unescape:
1575baacf047SPaolo Bonzini * @str: the string to unescape
1576baacf047SPaolo Bonzini * @len: the length in bytes to unescape (or <= 0 to indicate full string)
1577baacf047SPaolo Bonzini * @target: optional destination buffer
1578baacf047SPaolo Bonzini *
1579baacf047SPaolo Bonzini * Unescaping routine, but does not check that the string is an URI. The
1580baacf047SPaolo Bonzini * output is a direct unsigned char translation of %XX values (no encoding)
1581baacf047SPaolo Bonzini * Note that the length of the result can only be smaller or same size as
1582baacf047SPaolo Bonzini * the input string.
1583baacf047SPaolo Bonzini *
1584baacf047SPaolo Bonzini * Returns a copy of the string, but unescaped, will return NULL only in case
1585baacf047SPaolo Bonzini * of error
1586baacf047SPaolo Bonzini */
uri_string_unescape(const char * str,int len,char * target)1587be95adafSSu Hang char *uri_string_unescape(const char *str, int len, char *target)
1588be95adafSSu Hang {
1589baacf047SPaolo Bonzini char *ret, *out;
1590baacf047SPaolo Bonzini const char *in;
1591baacf047SPaolo Bonzini
1592a1515161SSu Hang if (str == NULL) {
159342fa2725SSu Hang return NULL;
1594a1515161SSu Hang }
1595a1515161SSu Hang if (len <= 0) {
1596be95adafSSu Hang len = strlen(str);
1597a1515161SSu Hang }
1598a1515161SSu Hang if (len < 0) {
159942fa2725SSu Hang return NULL;
1600a1515161SSu Hang }
1601baacf047SPaolo Bonzini
1602baacf047SPaolo Bonzini if (target == NULL) {
1603baacf047SPaolo Bonzini ret = g_malloc(len + 1);
1604a1515161SSu Hang } else {
1605baacf047SPaolo Bonzini ret = target;
1606a1515161SSu Hang }
1607baacf047SPaolo Bonzini in = str;
1608baacf047SPaolo Bonzini out = ret;
1609baacf047SPaolo Bonzini while (len > 0) {
1610baacf047SPaolo Bonzini if ((len > 2) && (*in == '%') && (is_hex(in[1])) && (is_hex(in[2]))) {
1611baacf047SPaolo Bonzini in++;
1612a1515161SSu Hang if ((*in >= '0') && (*in <= '9')) {
1613baacf047SPaolo Bonzini *out = (*in - '0');
1614a1515161SSu Hang } else if ((*in >= 'a') && (*in <= 'f')) {
1615baacf047SPaolo Bonzini *out = (*in - 'a') + 10;
1616a1515161SSu Hang } else if ((*in >= 'A') && (*in <= 'F')) {
1617baacf047SPaolo Bonzini *out = (*in - 'A') + 10;
1618a1515161SSu Hang }
1619baacf047SPaolo Bonzini in++;
1620a1515161SSu Hang if ((*in >= '0') && (*in <= '9')) {
1621baacf047SPaolo Bonzini *out = *out * 16 + (*in - '0');
1622a1515161SSu Hang } else if ((*in >= 'a') && (*in <= 'f')) {
1623baacf047SPaolo Bonzini *out = *out * 16 + (*in - 'a') + 10;
1624a1515161SSu Hang } else if ((*in >= 'A') && (*in <= 'F')) {
1625baacf047SPaolo Bonzini *out = *out * 16 + (*in - 'A') + 10;
1626a1515161SSu Hang }
1627baacf047SPaolo Bonzini in++;
1628baacf047SPaolo Bonzini len -= 3;
1629baacf047SPaolo Bonzini out++;
1630baacf047SPaolo Bonzini } else {
1631baacf047SPaolo Bonzini *out++ = *in++;
1632baacf047SPaolo Bonzini len--;
1633baacf047SPaolo Bonzini }
1634baacf047SPaolo Bonzini }
1635baacf047SPaolo Bonzini *out = 0;
163642fa2725SSu Hang return ret;
1637baacf047SPaolo Bonzini }
1638baacf047SPaolo Bonzini
1639baacf047SPaolo Bonzini /**
1640baacf047SPaolo Bonzini * uri_string_escape:
1641baacf047SPaolo Bonzini * @str: string to escape
1642baacf047SPaolo Bonzini * @list: exception list string of chars not to escape
1643baacf047SPaolo Bonzini *
1644baacf047SPaolo Bonzini * This routine escapes a string to hex, ignoring reserved characters (a-z)
1645baacf047SPaolo Bonzini * and the characters in the exception list.
1646baacf047SPaolo Bonzini *
1647baacf047SPaolo Bonzini * Returns a new escaped string or NULL in case of error.
1648baacf047SPaolo Bonzini */
uri_string_escape(const char * str,const char * list)1649be95adafSSu Hang char *uri_string_escape(const char *str, const char *list)
1650be95adafSSu Hang {
1651baacf047SPaolo Bonzini char *ret, ch;
1652baacf047SPaolo Bonzini char *temp;
1653baacf047SPaolo Bonzini const char *in;
1654baacf047SPaolo Bonzini int len, out;
1655baacf047SPaolo Bonzini
1656a1515161SSu Hang if (str == NULL) {
165742fa2725SSu Hang return NULL;
1658a1515161SSu Hang }
1659a1515161SSu Hang if (str[0] == 0) {
166042fa2725SSu Hang return g_strdup(str);
1661a1515161SSu Hang }
1662baacf047SPaolo Bonzini len = strlen(str);
1663a1515161SSu Hang if (!(len > 0)) {
166442fa2725SSu Hang return NULL;
1665a1515161SSu Hang }
1666baacf047SPaolo Bonzini
1667baacf047SPaolo Bonzini len += 20;
1668baacf047SPaolo Bonzini ret = g_malloc(len);
1669baacf047SPaolo Bonzini in = str;
1670baacf047SPaolo Bonzini out = 0;
1671baacf047SPaolo Bonzini while (*in != 0) {
1672baacf047SPaolo Bonzini if (len - out <= 3) {
1673baacf047SPaolo Bonzini temp = realloc2n(ret, &len);
1674baacf047SPaolo Bonzini ret = temp;
1675baacf047SPaolo Bonzini }
1676baacf047SPaolo Bonzini
1677baacf047SPaolo Bonzini ch = *in;
1678baacf047SPaolo Bonzini
1679baacf047SPaolo Bonzini if ((ch != '@') && (!IS_UNRESERVED(ch)) && (!strchr(list, ch))) {
1680baacf047SPaolo Bonzini unsigned char val;
1681baacf047SPaolo Bonzini ret[out++] = '%';
1682baacf047SPaolo Bonzini val = ch >> 4;
1683a1515161SSu Hang if (val <= 9) {
1684baacf047SPaolo Bonzini ret[out++] = '0' + val;
1685a1515161SSu Hang } else {
1686baacf047SPaolo Bonzini ret[out++] = 'A' + val - 0xA;
1687a1515161SSu Hang }
1688baacf047SPaolo Bonzini val = ch & 0xF;
1689a1515161SSu Hang if (val <= 9) {
1690baacf047SPaolo Bonzini ret[out++] = '0' + val;
1691a1515161SSu Hang } else {
1692baacf047SPaolo Bonzini ret[out++] = 'A' + val - 0xA;
1693a1515161SSu Hang }
1694baacf047SPaolo Bonzini in++;
1695baacf047SPaolo Bonzini } else {
1696baacf047SPaolo Bonzini ret[out++] = *in++;
1697baacf047SPaolo Bonzini }
1698baacf047SPaolo Bonzini }
1699baacf047SPaolo Bonzini ret[out] = 0;
170042fa2725SSu Hang return ret;
1701baacf047SPaolo Bonzini }
1702baacf047SPaolo Bonzini
1703baacf047SPaolo Bonzini /************************************************************************
1704baacf047SPaolo Bonzini * *
1705baacf047SPaolo Bonzini * Public functions *
1706baacf047SPaolo Bonzini * *
1707baacf047SPaolo Bonzini ************************************************************************/
1708baacf047SPaolo Bonzini
1709baacf047SPaolo Bonzini /**
1710baacf047SPaolo Bonzini * uri_resolve:
1711baacf047SPaolo Bonzini * @URI: the URI instance found in the document
1712baacf047SPaolo Bonzini * @base: the base value
1713baacf047SPaolo Bonzini *
1714baacf047SPaolo Bonzini * Computes he final URI of the reference done by checking that
1715baacf047SPaolo Bonzini * the given URI is valid, and building the final URI using the
1716baacf047SPaolo Bonzini * base URI. This is processed according to section 5.2 of the
1717baacf047SPaolo Bonzini * RFC 2396
1718baacf047SPaolo Bonzini *
1719baacf047SPaolo Bonzini * 5.2. Resolving Relative References to Absolute Form
1720baacf047SPaolo Bonzini *
1721baacf047SPaolo Bonzini * Returns a new URI string (to be freed by the caller) or NULL in case
1722baacf047SPaolo Bonzini * of error.
1723baacf047SPaolo Bonzini */
uri_resolve(const char * uri,const char * base)1724be95adafSSu Hang char *uri_resolve(const char *uri, const char *base)
1725be95adafSSu Hang {
1726baacf047SPaolo Bonzini char *val = NULL;
1727baacf047SPaolo Bonzini int ret, len, indx, cur, out;
1728baacf047SPaolo Bonzini URI *ref = NULL;
1729baacf047SPaolo Bonzini URI *bas = NULL;
1730baacf047SPaolo Bonzini URI *res = NULL;
1731baacf047SPaolo Bonzini
1732baacf047SPaolo Bonzini /*
1733baacf047SPaolo Bonzini * 1) The URI reference is parsed into the potential four components and
1734baacf047SPaolo Bonzini * fragment identifier, as described in Section 4.3.
1735baacf047SPaolo Bonzini *
1736baacf047SPaolo Bonzini * NOTE that a completely empty URI is treated by modern browsers
1737baacf047SPaolo Bonzini * as a reference to "." rather than as a synonym for the current
1738baacf047SPaolo Bonzini * URI. Should we do that here?
1739baacf047SPaolo Bonzini */
1740a1515161SSu Hang if (uri == NULL) {
1741baacf047SPaolo Bonzini ret = -1;
1742a1515161SSu Hang } else {
1743baacf047SPaolo Bonzini if (*uri) {
1744baacf047SPaolo Bonzini ref = uri_new();
1745baacf047SPaolo Bonzini ret = uri_parse_into(ref, uri);
1746a1515161SSu Hang } else {
1747baacf047SPaolo Bonzini ret = 0;
1748baacf047SPaolo Bonzini }
1749a1515161SSu Hang }
1750a1515161SSu Hang if (ret != 0) {
1751baacf047SPaolo Bonzini goto done;
1752a1515161SSu Hang }
1753baacf047SPaolo Bonzini if ((ref != NULL) && (ref->scheme != NULL)) {
1754baacf047SPaolo Bonzini /*
1755baacf047SPaolo Bonzini * The URI is absolute don't modify.
1756baacf047SPaolo Bonzini */
1757baacf047SPaolo Bonzini val = g_strdup(uri);
1758baacf047SPaolo Bonzini goto done;
1759baacf047SPaolo Bonzini }
1760a1515161SSu Hang if (base == NULL) {
1761baacf047SPaolo Bonzini ret = -1;
1762a1515161SSu Hang } else {
1763baacf047SPaolo Bonzini bas = uri_new();
1764baacf047SPaolo Bonzini ret = uri_parse_into(bas, base);
1765baacf047SPaolo Bonzini }
1766baacf047SPaolo Bonzini if (ret != 0) {
1767a1515161SSu Hang if (ref) {
1768baacf047SPaolo Bonzini val = uri_to_string(ref);
1769a1515161SSu Hang }
1770baacf047SPaolo Bonzini goto done;
1771baacf047SPaolo Bonzini }
1772baacf047SPaolo Bonzini if (ref == NULL) {
1773baacf047SPaolo Bonzini /*
1774baacf047SPaolo Bonzini * the base fragment must be ignored
1775baacf047SPaolo Bonzini */
1776baacf047SPaolo Bonzini g_free(bas->fragment);
1777baacf047SPaolo Bonzini bas->fragment = NULL;
1778baacf047SPaolo Bonzini val = uri_to_string(bas);
1779baacf047SPaolo Bonzini goto done;
1780baacf047SPaolo Bonzini }
1781baacf047SPaolo Bonzini
1782baacf047SPaolo Bonzini /*
1783baacf047SPaolo Bonzini * 2) If the path component is empty and the scheme, authority, and
1784baacf047SPaolo Bonzini * query components are undefined, then it is a reference to the
1785baacf047SPaolo Bonzini * current document and we are done. Otherwise, the reference URI's
1786baacf047SPaolo Bonzini * query and fragment components are defined as found (or not found)
1787baacf047SPaolo Bonzini * within the URI reference and not inherited from the base URI.
1788baacf047SPaolo Bonzini *
1789baacf047SPaolo Bonzini * NOTE that in modern browsers, the parsing differs from the above
1790baacf047SPaolo Bonzini * in the following aspect: the query component is allowed to be
1791baacf047SPaolo Bonzini * defined while still treating this as a reference to the current
1792baacf047SPaolo Bonzini * document.
1793baacf047SPaolo Bonzini */
1794baacf047SPaolo Bonzini res = uri_new();
1795baacf047SPaolo Bonzini if ((ref->scheme == NULL) && (ref->path == NULL) &&
1796baacf047SPaolo Bonzini ((ref->authority == NULL) && (ref->server == NULL))) {
1797baacf047SPaolo Bonzini res->scheme = g_strdup(bas->scheme);
1798a1515161SSu Hang if (bas->authority != NULL) {
1799baacf047SPaolo Bonzini res->authority = g_strdup(bas->authority);
1800a1515161SSu Hang } else if (bas->server != NULL) {
1801baacf047SPaolo Bonzini res->server = g_strdup(bas->server);
1802baacf047SPaolo Bonzini res->user = g_strdup(bas->user);
1803baacf047SPaolo Bonzini res->port = bas->port;
1804baacf047SPaolo Bonzini }
1805baacf047SPaolo Bonzini res->path = g_strdup(bas->path);
180624588100SMarkus Armbruster if (ref->query != NULL) {
1807baacf047SPaolo Bonzini res->query = g_strdup(ref->query);
180824588100SMarkus Armbruster } else {
1809baacf047SPaolo Bonzini res->query = g_strdup(bas->query);
181024588100SMarkus Armbruster }
1811baacf047SPaolo Bonzini res->fragment = g_strdup(ref->fragment);
1812baacf047SPaolo Bonzini goto step_7;
1813baacf047SPaolo Bonzini }
1814baacf047SPaolo Bonzini
1815baacf047SPaolo Bonzini /*
1816baacf047SPaolo Bonzini * 3) If the scheme component is defined, indicating that the reference
1817baacf047SPaolo Bonzini * starts with a scheme name, then the reference is interpreted as an
1818baacf047SPaolo Bonzini * absolute URI and we are done. Otherwise, the reference URI's
1819baacf047SPaolo Bonzini * scheme is inherited from the base URI's scheme component.
1820baacf047SPaolo Bonzini */
1821baacf047SPaolo Bonzini if (ref->scheme != NULL) {
1822baacf047SPaolo Bonzini val = uri_to_string(ref);
1823baacf047SPaolo Bonzini goto done;
1824baacf047SPaolo Bonzini }
1825baacf047SPaolo Bonzini res->scheme = g_strdup(bas->scheme);
1826baacf047SPaolo Bonzini
1827baacf047SPaolo Bonzini res->query = g_strdup(ref->query);
1828baacf047SPaolo Bonzini res->fragment = g_strdup(ref->fragment);
1829baacf047SPaolo Bonzini
1830baacf047SPaolo Bonzini /*
1831baacf047SPaolo Bonzini * 4) If the authority component is defined, then the reference is a
1832baacf047SPaolo Bonzini * network-path and we skip to step 7. Otherwise, the reference
1833baacf047SPaolo Bonzini * URI's authority is inherited from the base URI's authority
1834baacf047SPaolo Bonzini * component, which will also be undefined if the URI scheme does not
1835baacf047SPaolo Bonzini * use an authority component.
1836baacf047SPaolo Bonzini */
1837baacf047SPaolo Bonzini if ((ref->authority != NULL) || (ref->server != NULL)) {
1838a1515161SSu Hang if (ref->authority != NULL) {
1839baacf047SPaolo Bonzini res->authority = g_strdup(ref->authority);
1840a1515161SSu Hang } else {
1841baacf047SPaolo Bonzini res->server = g_strdup(ref->server);
1842baacf047SPaolo Bonzini res->user = g_strdup(ref->user);
1843baacf047SPaolo Bonzini res->port = ref->port;
1844baacf047SPaolo Bonzini }
1845baacf047SPaolo Bonzini res->path = g_strdup(ref->path);
1846baacf047SPaolo Bonzini goto step_7;
1847baacf047SPaolo Bonzini }
1848a1515161SSu Hang if (bas->authority != NULL) {
1849baacf047SPaolo Bonzini res->authority = g_strdup(bas->authority);
1850a1515161SSu Hang } else if (bas->server != NULL) {
1851baacf047SPaolo Bonzini res->server = g_strdup(bas->server);
1852baacf047SPaolo Bonzini res->user = g_strdup(bas->user);
1853baacf047SPaolo Bonzini res->port = bas->port;
1854baacf047SPaolo Bonzini }
1855baacf047SPaolo Bonzini
1856baacf047SPaolo Bonzini /*
1857baacf047SPaolo Bonzini * 5) If the path component begins with a slash character ("/"), then
1858baacf047SPaolo Bonzini * the reference is an absolute-path and we skip to step 7.
1859baacf047SPaolo Bonzini */
1860baacf047SPaolo Bonzini if ((ref->path != NULL) && (ref->path[0] == '/')) {
1861baacf047SPaolo Bonzini res->path = g_strdup(ref->path);
1862baacf047SPaolo Bonzini goto step_7;
1863baacf047SPaolo Bonzini }
1864baacf047SPaolo Bonzini
1865baacf047SPaolo Bonzini /*
1866baacf047SPaolo Bonzini * 6) If this step is reached, then we are resolving a relative-path
1867baacf047SPaolo Bonzini * reference. The relative path needs to be merged with the base
1868baacf047SPaolo Bonzini * URI's path. Although there are many ways to do this, we will
1869baacf047SPaolo Bonzini * describe a simple method using a separate string buffer.
1870baacf047SPaolo Bonzini *
1871baacf047SPaolo Bonzini * Allocate a buffer large enough for the result string.
1872baacf047SPaolo Bonzini */
1873baacf047SPaolo Bonzini len = 2; /* extra / and 0 */
1874a1515161SSu Hang if (ref->path != NULL) {
1875baacf047SPaolo Bonzini len += strlen(ref->path);
1876a1515161SSu Hang }
1877a1515161SSu Hang if (bas->path != NULL) {
1878baacf047SPaolo Bonzini len += strlen(bas->path);
1879a1515161SSu Hang }
1880baacf047SPaolo Bonzini res->path = g_malloc(len);
1881baacf047SPaolo Bonzini res->path[0] = 0;
1882baacf047SPaolo Bonzini
1883baacf047SPaolo Bonzini /*
1884baacf047SPaolo Bonzini * a) All but the last segment of the base URI's path component is
1885baacf047SPaolo Bonzini * copied to the buffer. In other words, any characters after the
1886baacf047SPaolo Bonzini * last (right-most) slash character, if any, are excluded.
1887baacf047SPaolo Bonzini */
1888baacf047SPaolo Bonzini cur = 0;
1889baacf047SPaolo Bonzini out = 0;
1890baacf047SPaolo Bonzini if (bas->path != NULL) {
1891baacf047SPaolo Bonzini while (bas->path[cur] != 0) {
1892a1515161SSu Hang while ((bas->path[cur] != 0) && (bas->path[cur] != '/')) {
1893baacf047SPaolo Bonzini cur++;
1894a1515161SSu Hang }
1895a1515161SSu Hang if (bas->path[cur] == 0) {
1896baacf047SPaolo Bonzini break;
1897a1515161SSu Hang }
1898baacf047SPaolo Bonzini
1899baacf047SPaolo Bonzini cur++;
1900baacf047SPaolo Bonzini while (out < cur) {
1901baacf047SPaolo Bonzini res->path[out] = bas->path[out];
1902baacf047SPaolo Bonzini out++;
1903baacf047SPaolo Bonzini }
1904baacf047SPaolo Bonzini }
1905baacf047SPaolo Bonzini }
1906baacf047SPaolo Bonzini res->path[out] = 0;
1907baacf047SPaolo Bonzini
1908baacf047SPaolo Bonzini /*
1909baacf047SPaolo Bonzini * b) The reference's path component is appended to the buffer
1910baacf047SPaolo Bonzini * string.
1911baacf047SPaolo Bonzini */
1912baacf047SPaolo Bonzini if (ref->path != NULL && ref->path[0] != 0) {
1913baacf047SPaolo Bonzini indx = 0;
1914baacf047SPaolo Bonzini /*
1915baacf047SPaolo Bonzini * Ensure the path includes a '/'
1916baacf047SPaolo Bonzini */
1917a1515161SSu Hang if ((out == 0) && (bas->server != NULL)) {
1918baacf047SPaolo Bonzini res->path[out++] = '/';
1919a1515161SSu Hang }
1920baacf047SPaolo Bonzini while (ref->path[indx] != 0) {
1921baacf047SPaolo Bonzini res->path[out++] = ref->path[indx++];
1922baacf047SPaolo Bonzini }
1923baacf047SPaolo Bonzini }
1924baacf047SPaolo Bonzini res->path[out] = 0;
1925baacf047SPaolo Bonzini
1926baacf047SPaolo Bonzini /*
1927baacf047SPaolo Bonzini * Steps c) to h) are really path normalization steps
1928baacf047SPaolo Bonzini */
1929baacf047SPaolo Bonzini normalize_uri_path(res->path);
1930baacf047SPaolo Bonzini
1931baacf047SPaolo Bonzini step_7:
1932baacf047SPaolo Bonzini
1933baacf047SPaolo Bonzini /*
1934baacf047SPaolo Bonzini * 7) The resulting URI components, including any inherited from the
1935baacf047SPaolo Bonzini * base URI, are recombined to give the absolute form of the URI
1936baacf047SPaolo Bonzini * reference.
1937baacf047SPaolo Bonzini */
1938baacf047SPaolo Bonzini val = uri_to_string(res);
1939baacf047SPaolo Bonzini
1940baacf047SPaolo Bonzini done:
1941baacf047SPaolo Bonzini uri_free(ref);
1942baacf047SPaolo Bonzini uri_free(bas);
1943baacf047SPaolo Bonzini uri_free(res);
194442fa2725SSu Hang return val;
1945baacf047SPaolo Bonzini }
1946baacf047SPaolo Bonzini
1947baacf047SPaolo Bonzini /**
1948baacf047SPaolo Bonzini * uri_resolve_relative:
1949baacf047SPaolo Bonzini * @URI: the URI reference under consideration
1950baacf047SPaolo Bonzini * @base: the base value
1951baacf047SPaolo Bonzini *
1952baacf047SPaolo Bonzini * Expresses the URI of the reference in terms relative to the
1953baacf047SPaolo Bonzini * base. Some examples of this operation include:
1954baacf047SPaolo Bonzini * base = "http://site1.com/docs/book1.html"
1955baacf047SPaolo Bonzini * URI input URI returned
1956baacf047SPaolo Bonzini * docs/pic1.gif pic1.gif
1957baacf047SPaolo Bonzini * docs/img/pic1.gif img/pic1.gif
1958baacf047SPaolo Bonzini * img/pic1.gif ../img/pic1.gif
1959baacf047SPaolo Bonzini * http://site1.com/docs/pic1.gif pic1.gif
1960baacf047SPaolo Bonzini * http://site2.com/docs/pic1.gif http://site2.com/docs/pic1.gif
1961baacf047SPaolo Bonzini *
1962baacf047SPaolo Bonzini * base = "docs/book1.html"
1963baacf047SPaolo Bonzini * URI input URI returned
1964baacf047SPaolo Bonzini * docs/pic1.gif pic1.gif
1965baacf047SPaolo Bonzini * docs/img/pic1.gif img/pic1.gif
1966baacf047SPaolo Bonzini * img/pic1.gif ../img/pic1.gif
1967baacf047SPaolo Bonzini * http://site1.com/docs/pic1.gif http://site1.com/docs/pic1.gif
1968baacf047SPaolo Bonzini *
1969baacf047SPaolo Bonzini *
1970baacf047SPaolo Bonzini * Note: if the URI reference is really weird or complicated, it may be
1971baacf047SPaolo Bonzini * worthwhile to first convert it into a "nice" one by calling
1972baacf047SPaolo Bonzini * uri_resolve (using 'base') before calling this routine,
1973baacf047SPaolo Bonzini * since this routine (for reasonable efficiency) assumes URI has
1974baacf047SPaolo Bonzini * already been through some validation.
1975baacf047SPaolo Bonzini *
1976baacf047SPaolo Bonzini * Returns a new URI string (to be freed by the caller) or NULL in case
1977baacf047SPaolo Bonzini * error.
1978baacf047SPaolo Bonzini */
uri_resolve_relative(const char * uri,const char * base)1979be95adafSSu Hang char *uri_resolve_relative(const char *uri, const char *base)
1980baacf047SPaolo Bonzini {
1981baacf047SPaolo Bonzini char *val = NULL;
1982baacf047SPaolo Bonzini int ret;
1983baacf047SPaolo Bonzini int ix;
1984baacf047SPaolo Bonzini int pos = 0;
1985baacf047SPaolo Bonzini int nbslash = 0;
1986baacf047SPaolo Bonzini int len;
1987baacf047SPaolo Bonzini URI *ref = NULL;
1988baacf047SPaolo Bonzini URI *bas = NULL;
1989baacf047SPaolo Bonzini char *bptr, *uptr, *vptr;
1990baacf047SPaolo Bonzini int remove_path = 0;
1991baacf047SPaolo Bonzini
1992a1515161SSu Hang if ((uri == NULL) || (*uri == 0)) {
1993baacf047SPaolo Bonzini return NULL;
1994a1515161SSu Hang }
1995baacf047SPaolo Bonzini
1996baacf047SPaolo Bonzini /*
1997baacf047SPaolo Bonzini * First parse URI into a standard form
1998baacf047SPaolo Bonzini */
1999baacf047SPaolo Bonzini ref = uri_new();
2000baacf047SPaolo Bonzini /* If URI not already in "relative" form */
2001baacf047SPaolo Bonzini if (uri[0] != '.') {
2002baacf047SPaolo Bonzini ret = uri_parse_into(ref, uri);
2003a1515161SSu Hang if (ret != 0) {
2004baacf047SPaolo Bonzini goto done; /* Error in URI, return NULL */
2005a1515161SSu Hang }
2006a1515161SSu Hang } else {
2007baacf047SPaolo Bonzini ref->path = g_strdup(uri);
2008a1515161SSu Hang }
2009baacf047SPaolo Bonzini
2010baacf047SPaolo Bonzini /*
2011baacf047SPaolo Bonzini * Next parse base into the same standard form
2012baacf047SPaolo Bonzini */
2013baacf047SPaolo Bonzini if ((base == NULL) || (*base == 0)) {
2014baacf047SPaolo Bonzini val = g_strdup(uri);
2015baacf047SPaolo Bonzini goto done;
2016baacf047SPaolo Bonzini }
2017baacf047SPaolo Bonzini bas = uri_new();
2018baacf047SPaolo Bonzini if (base[0] != '.') {
2019baacf047SPaolo Bonzini ret = uri_parse_into(bas, base);
2020a1515161SSu Hang if (ret != 0) {
2021baacf047SPaolo Bonzini goto done; /* Error in base, return NULL */
2022a1515161SSu Hang }
2023a1515161SSu Hang } else {
2024baacf047SPaolo Bonzini bas->path = g_strdup(base);
2025a1515161SSu Hang }
2026baacf047SPaolo Bonzini
2027baacf047SPaolo Bonzini /*
2028baacf047SPaolo Bonzini * If the scheme / server on the URI differs from the base,
2029baacf047SPaolo Bonzini * just return the URI
2030baacf047SPaolo Bonzini */
2031baacf047SPaolo Bonzini if ((ref->scheme != NULL) &&
2032be95adafSSu Hang ((bas->scheme == NULL) || (strcmp(bas->scheme, ref->scheme)) ||
2033baacf047SPaolo Bonzini (strcmp(bas->server, ref->server)))) {
2034baacf047SPaolo Bonzini val = g_strdup(uri);
2035baacf047SPaolo Bonzini goto done;
2036baacf047SPaolo Bonzini }
2037afb30ddeSMarkus Armbruster if (bas->path == ref->path ||
2038afb30ddeSMarkus Armbruster (bas->path && ref->path && !strcmp(bas->path, ref->path))) {
2039baacf047SPaolo Bonzini val = g_strdup("");
2040baacf047SPaolo Bonzini goto done;
2041baacf047SPaolo Bonzini }
2042baacf047SPaolo Bonzini if (bas->path == NULL) {
2043baacf047SPaolo Bonzini val = g_strdup(ref->path);
2044baacf047SPaolo Bonzini goto done;
2045baacf047SPaolo Bonzini }
2046baacf047SPaolo Bonzini if (ref->path == NULL) {
2047baacf047SPaolo Bonzini ref->path = (char *)"/";
2048baacf047SPaolo Bonzini remove_path = 1;
2049baacf047SPaolo Bonzini }
2050baacf047SPaolo Bonzini
2051baacf047SPaolo Bonzini /*
2052baacf047SPaolo Bonzini * At this point (at last!) we can compare the two paths
2053baacf047SPaolo Bonzini *
2054baacf047SPaolo Bonzini * First we take care of the special case where either of the
2055baacf047SPaolo Bonzini * two path components may be missing (bug 316224)
2056baacf047SPaolo Bonzini */
2057baacf047SPaolo Bonzini if (bas->path == NULL) {
2058baacf047SPaolo Bonzini if (ref->path != NULL) {
2059baacf047SPaolo Bonzini uptr = ref->path;
2060a1515161SSu Hang if (*uptr == '/') {
2061baacf047SPaolo Bonzini uptr++;
2062a1515161SSu Hang }
2063baacf047SPaolo Bonzini /* exception characters from uri_to_string */
2064baacf047SPaolo Bonzini val = uri_string_escape(uptr, "/;&=+$,");
2065baacf047SPaolo Bonzini }
2066baacf047SPaolo Bonzini goto done;
2067baacf047SPaolo Bonzini }
2068baacf047SPaolo Bonzini bptr = bas->path;
2069baacf047SPaolo Bonzini if (ref->path == NULL) {
2070baacf047SPaolo Bonzini for (ix = 0; bptr[ix] != 0; ix++) {
2071a1515161SSu Hang if (bptr[ix] == '/') {
2072baacf047SPaolo Bonzini nbslash++;
2073baacf047SPaolo Bonzini }
2074a1515161SSu Hang }
2075baacf047SPaolo Bonzini uptr = NULL;
2076baacf047SPaolo Bonzini len = 1; /* this is for a string terminator only */
2077baacf047SPaolo Bonzini } else {
2078baacf047SPaolo Bonzini /*
2079baacf047SPaolo Bonzini * Next we compare the two strings and find where they first differ
2080baacf047SPaolo Bonzini */
2081a1515161SSu Hang if ((ref->path[pos] == '.') && (ref->path[pos + 1] == '/')) {
2082baacf047SPaolo Bonzini pos += 2;
2083a1515161SSu Hang }
2084a1515161SSu Hang if ((*bptr == '.') && (bptr[1] == '/')) {
2085baacf047SPaolo Bonzini bptr += 2;
2086a1515161SSu Hang } else if ((*bptr == '/') && (ref->path[pos] != '/')) {
2087baacf047SPaolo Bonzini bptr++;
2088a1515161SSu Hang }
2089a1515161SSu Hang while ((bptr[pos] == ref->path[pos]) && (bptr[pos] != 0)) {
2090baacf047SPaolo Bonzini pos++;
2091a1515161SSu Hang }
2092baacf047SPaolo Bonzini
2093baacf047SPaolo Bonzini if (bptr[pos] == ref->path[pos]) {
2094baacf047SPaolo Bonzini val = g_strdup("");
2095baacf047SPaolo Bonzini goto done; /* (I can't imagine why anyone would do this) */
2096baacf047SPaolo Bonzini }
2097baacf047SPaolo Bonzini
2098baacf047SPaolo Bonzini /*
2099baacf047SPaolo Bonzini * In URI, "back up" to the last '/' encountered. This will be the
2100baacf047SPaolo Bonzini * beginning of the "unique" suffix of URI
2101baacf047SPaolo Bonzini */
2102baacf047SPaolo Bonzini ix = pos;
2103a1515161SSu Hang if ((ref->path[ix] == '/') && (ix > 0)) {
2104baacf047SPaolo Bonzini ix--;
2105a1515161SSu Hang } else if ((ref->path[ix] == 0) && (ix > 1)
2106a1515161SSu Hang && (ref->path[ix - 1] == '/')) {
2107baacf047SPaolo Bonzini ix -= 2;
2108a1515161SSu Hang }
2109baacf047SPaolo Bonzini for (; ix > 0; ix--) {
2110a1515161SSu Hang if (ref->path[ix] == '/') {
2111baacf047SPaolo Bonzini break;
2112baacf047SPaolo Bonzini }
2113a1515161SSu Hang }
2114baacf047SPaolo Bonzini if (ix == 0) {
2115baacf047SPaolo Bonzini uptr = ref->path;
2116baacf047SPaolo Bonzini } else {
2117baacf047SPaolo Bonzini ix++;
2118baacf047SPaolo Bonzini uptr = &ref->path[ix];
2119baacf047SPaolo Bonzini }
2120baacf047SPaolo Bonzini
2121baacf047SPaolo Bonzini /*
2122baacf047SPaolo Bonzini * In base, count the number of '/' from the differing point
2123baacf047SPaolo Bonzini */
2124baacf047SPaolo Bonzini if (bptr[pos] != ref->path[pos]) { /* check for trivial URI == base */
2125baacf047SPaolo Bonzini for (; bptr[ix] != 0; ix++) {
2126a1515161SSu Hang if (bptr[ix] == '/') {
2127baacf047SPaolo Bonzini nbslash++;
2128baacf047SPaolo Bonzini }
2129baacf047SPaolo Bonzini }
2130a1515161SSu Hang }
2131baacf047SPaolo Bonzini len = strlen(uptr) + 1;
2132baacf047SPaolo Bonzini }
2133baacf047SPaolo Bonzini
2134baacf047SPaolo Bonzini if (nbslash == 0) {
2135a1515161SSu Hang if (uptr != NULL) {
2136baacf047SPaolo Bonzini /* exception characters from uri_to_string */
2137baacf047SPaolo Bonzini val = uri_string_escape(uptr, "/;&=+$,");
2138a1515161SSu Hang }
2139baacf047SPaolo Bonzini goto done;
2140baacf047SPaolo Bonzini }
2141baacf047SPaolo Bonzini
2142baacf047SPaolo Bonzini /*
2143baacf047SPaolo Bonzini * Allocate just enough space for the returned string -
2144baacf047SPaolo Bonzini * length of the remainder of the URI, plus enough space
2145baacf047SPaolo Bonzini * for the "../" groups, plus one for the terminator
2146baacf047SPaolo Bonzini */
2147baacf047SPaolo Bonzini val = g_malloc(len + 3 * nbslash);
2148baacf047SPaolo Bonzini vptr = val;
2149baacf047SPaolo Bonzini /*
2150baacf047SPaolo Bonzini * Put in as many "../" as needed
2151baacf047SPaolo Bonzini */
2152baacf047SPaolo Bonzini for (; nbslash > 0; nbslash--) {
2153baacf047SPaolo Bonzini *vptr++ = '.';
2154baacf047SPaolo Bonzini *vptr++ = '.';
2155baacf047SPaolo Bonzini *vptr++ = '/';
2156baacf047SPaolo Bonzini }
2157baacf047SPaolo Bonzini /*
2158baacf047SPaolo Bonzini * Finish up with the end of the URI
2159baacf047SPaolo Bonzini */
2160baacf047SPaolo Bonzini if (uptr != NULL) {
2161be95adafSSu Hang if ((vptr > val) && (len > 0) && (uptr[0] == '/') &&
2162be95adafSSu Hang (vptr[-1] == '/')) {
2163baacf047SPaolo Bonzini memcpy(vptr, uptr + 1, len - 1);
2164baacf047SPaolo Bonzini vptr[len - 2] = 0;
2165baacf047SPaolo Bonzini } else {
2166baacf047SPaolo Bonzini memcpy(vptr, uptr, len);
2167baacf047SPaolo Bonzini vptr[len - 1] = 0;
2168baacf047SPaolo Bonzini }
2169baacf047SPaolo Bonzini } else {
2170baacf047SPaolo Bonzini vptr[len - 1] = 0;
2171baacf047SPaolo Bonzini }
2172baacf047SPaolo Bonzini
2173baacf047SPaolo Bonzini /* escape the freshly-built path */
2174baacf047SPaolo Bonzini vptr = val;
2175baacf047SPaolo Bonzini /* exception characters from uri_to_string */
2176baacf047SPaolo Bonzini val = uri_string_escape(vptr, "/;&=+$,");
2177baacf047SPaolo Bonzini g_free(vptr);
2178baacf047SPaolo Bonzini
2179baacf047SPaolo Bonzini done:
2180baacf047SPaolo Bonzini /*
2181baacf047SPaolo Bonzini * Free the working variables
2182baacf047SPaolo Bonzini */
2183a1515161SSu Hang if (remove_path != 0) {
2184baacf047SPaolo Bonzini ref->path = NULL;
2185a1515161SSu Hang }
2186baacf047SPaolo Bonzini uri_free(ref);
2187baacf047SPaolo Bonzini uri_free(bas);
2188baacf047SPaolo Bonzini
2189baacf047SPaolo Bonzini return val;
2190baacf047SPaolo Bonzini }
2191baacf047SPaolo Bonzini
2192baacf047SPaolo Bonzini /*
2193baacf047SPaolo Bonzini * Utility functions to help parse and assemble query strings.
2194baacf047SPaolo Bonzini */
2195baacf047SPaolo Bonzini
query_params_new(int init_alloc)2196be95adafSSu Hang struct QueryParams *query_params_new(int init_alloc)
2197baacf047SPaolo Bonzini {
2198baacf047SPaolo Bonzini struct QueryParams *ps;
2199baacf047SPaolo Bonzini
2200a1515161SSu Hang if (init_alloc <= 0) {
2201be95adafSSu Hang init_alloc = 1;
2202a1515161SSu Hang }
2203baacf047SPaolo Bonzini
2204baacf047SPaolo Bonzini ps = g_new(QueryParams, 1);
2205baacf047SPaolo Bonzini ps->n = 0;
2206baacf047SPaolo Bonzini ps->alloc = init_alloc;
2207baacf047SPaolo Bonzini ps->p = g_new(QueryParam, ps->alloc);
2208baacf047SPaolo Bonzini
2209baacf047SPaolo Bonzini return ps;
2210baacf047SPaolo Bonzini }
2211baacf047SPaolo Bonzini
2212baacf047SPaolo Bonzini /* Ensure there is space to store at least one more parameter
2213baacf047SPaolo Bonzini * at the end of the set.
2214baacf047SPaolo Bonzini */
query_params_append(struct QueryParams * ps,const char * name,const char * value)2215be95adafSSu Hang static int query_params_append(struct QueryParams *ps, const char *name,
2216be95adafSSu Hang const char *value)
2217baacf047SPaolo Bonzini {
2218baacf047SPaolo Bonzini if (ps->n >= ps->alloc) {
2219baacf047SPaolo Bonzini ps->p = g_renew(QueryParam, ps->p, ps->alloc * 2);
2220baacf047SPaolo Bonzini ps->alloc *= 2;
2221baacf047SPaolo Bonzini }
2222baacf047SPaolo Bonzini
2223baacf047SPaolo Bonzini ps->p[ps->n].name = g_strdup(name);
22247f303adcSDong Xu Wang ps->p[ps->n].value = g_strdup(value);
2225baacf047SPaolo Bonzini ps->p[ps->n].ignore = 0;
2226baacf047SPaolo Bonzini ps->n++;
2227baacf047SPaolo Bonzini
2228baacf047SPaolo Bonzini return 0;
2229baacf047SPaolo Bonzini }
2230baacf047SPaolo Bonzini
query_params_free(struct QueryParams * ps)2231be95adafSSu Hang void query_params_free(struct QueryParams *ps)
2232baacf047SPaolo Bonzini {
2233baacf047SPaolo Bonzini int i;
2234baacf047SPaolo Bonzini
2235baacf047SPaolo Bonzini for (i = 0; i < ps->n; ++i) {
2236baacf047SPaolo Bonzini g_free(ps->p[i].name);
2237baacf047SPaolo Bonzini g_free(ps->p[i].value);
2238baacf047SPaolo Bonzini }
2239baacf047SPaolo Bonzini g_free(ps->p);
2240baacf047SPaolo Bonzini g_free(ps);
2241baacf047SPaolo Bonzini }
2242baacf047SPaolo Bonzini
query_params_parse(const char * query)2243be95adafSSu Hang struct QueryParams *query_params_parse(const char *query)
2244baacf047SPaolo Bonzini {
2245baacf047SPaolo Bonzini struct QueryParams *ps;
2246baacf047SPaolo Bonzini const char *end, *eq;
2247baacf047SPaolo Bonzini
2248baacf047SPaolo Bonzini ps = query_params_new(0);
2249a1515161SSu Hang if (!query || query[0] == '\0') {
2250be95adafSSu Hang return ps;
2251a1515161SSu Hang }
2252baacf047SPaolo Bonzini
2253baacf047SPaolo Bonzini while (*query) {
2254baacf047SPaolo Bonzini char *name = NULL, *value = NULL;
2255baacf047SPaolo Bonzini
2256baacf047SPaolo Bonzini /* Find the next separator, or end of the string. */
2257baacf047SPaolo Bonzini end = strchr(query, '&');
2258a1515161SSu Hang if (!end) {
22595c99fa37SKeno Fischer end = qemu_strchrnul(query, ';');
2260a1515161SSu Hang }
2261baacf047SPaolo Bonzini
2262baacf047SPaolo Bonzini /* Find the first '=' character between here and end. */
2263baacf047SPaolo Bonzini eq = strchr(query, '=');
2264a1515161SSu Hang if (eq && eq >= end) {
2265be95adafSSu Hang eq = NULL;
2266a1515161SSu Hang }
2267baacf047SPaolo Bonzini
2268baacf047SPaolo Bonzini /* Empty section (eg. "&&"). */
2269a1515161SSu Hang if (end == query) {
2270baacf047SPaolo Bonzini goto next;
2271a1515161SSu Hang }
2272baacf047SPaolo Bonzini
2273baacf047SPaolo Bonzini /* If there is no '=' character, then we have just "name"
2274baacf047SPaolo Bonzini * and consistent with CGI.pm we assume value is "".
2275baacf047SPaolo Bonzini */
2276baacf047SPaolo Bonzini else if (!eq) {
2277baacf047SPaolo Bonzini name = uri_string_unescape(query, end - query, NULL);
2278baacf047SPaolo Bonzini value = NULL;
2279baacf047SPaolo Bonzini }
2280baacf047SPaolo Bonzini /* Or if we have "name=" here (works around annoying
2281baacf047SPaolo Bonzini * problem when calling uri_string_unescape with len = 0).
2282baacf047SPaolo Bonzini */
2283baacf047SPaolo Bonzini else if (eq + 1 == end) {
2284baacf047SPaolo Bonzini name = uri_string_unescape(query, eq - query, NULL);
2285baacf047SPaolo Bonzini value = g_new0(char, 1);
2286baacf047SPaolo Bonzini }
2287baacf047SPaolo Bonzini /* If the '=' character is at the beginning then we have
2288baacf047SPaolo Bonzini * "=value" and consistent with CGI.pm we _ignore_ this.
2289baacf047SPaolo Bonzini */
2290a1515161SSu Hang else if (query == eq) {
2291baacf047SPaolo Bonzini goto next;
2292a1515161SSu Hang }
2293baacf047SPaolo Bonzini
2294baacf047SPaolo Bonzini /* Otherwise it's "name=value". */
2295baacf047SPaolo Bonzini else {
2296baacf047SPaolo Bonzini name = uri_string_unescape(query, eq - query, NULL);
2297baacf047SPaolo Bonzini value = uri_string_unescape(eq + 1, end - (eq + 1), NULL);
2298baacf047SPaolo Bonzini }
2299baacf047SPaolo Bonzini
2300baacf047SPaolo Bonzini /* Append to the parameter set. */
2301baacf047SPaolo Bonzini query_params_append(ps, name, value);
2302baacf047SPaolo Bonzini g_free(name);
2303baacf047SPaolo Bonzini g_free(value);
2304baacf047SPaolo Bonzini
2305baacf047SPaolo Bonzini next:
2306baacf047SPaolo Bonzini query = end;
2307a1515161SSu Hang if (*query) {
2308be95adafSSu Hang query++; /* skip '&' separator */
2309baacf047SPaolo Bonzini }
2310a1515161SSu Hang }
2311baacf047SPaolo Bonzini
2312baacf047SPaolo Bonzini return ps;
2313baacf047SPaolo Bonzini }
2314