/[jscoverage]/trunk/http-url.c
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Contents of /trunk/http-url.c

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Revision 505 - (show annotations)
Sat Jan 2 04:55:54 2010 UTC (8 years, 6 months ago) by siliconforks
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1 /*
2 http-url.c - URL parsing routines
3 Copyright (C) 2008, 2009, 2010 siliconforks.com
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #include <config.h>
21
22 #include "http-server.h"
23
24 #include <ctype.h>
25 #include <string.h>
26
27 #include "util.h"
28
29 int URL_parse_host_and_port(const char * s, char ** host, uint16_t * port) {
30 char * colon = strchr(s, ':');
31 if (colon == NULL) {
32 *host = xstrdup(s);
33 *port = 80;
34 }
35 else {
36 if (*(colon + 1) == '\0') {
37 *port = 80;
38 }
39 else {
40 char * end;
41 unsigned long p = strtoul(colon + 1, &end, 10);
42 if (*end == '\0') {
43 if (p > UINT16_MAX) {
44 return -1;
45 }
46 else {
47 *port = p;
48 }
49 }
50 else {
51 return -1;
52 }
53 }
54 *host = xstrndup(s, colon - s);
55 }
56 return 0;
57 }
58
59 int URL_parse_abs_path_and_query(const char * s, char ** abs_path, char ** query) {
60 if (*s == '\0') {
61 *abs_path = xstrdup("/");
62 *query = NULL;
63 }
64 else if (*s == '?') {
65 *abs_path = xstrdup("/");
66 *query = xstrdup(s + 1);
67 }
68 else if (*s == '/') {
69 char * question = strchr(s, '?');
70 if (question == NULL) {
71 *abs_path = xstrdup(s);
72 *query = NULL;
73 }
74 else {
75 *abs_path = xstrndup(s, question - s);
76 *query = xstrdup(question + 1);
77 }
78 }
79 else {
80 return -1;
81 }
82 return 0;
83 }
84
85 int URL_parse(const char * url, char ** host, uint16_t * port, char ** abs_path, char ** query) {
86 /* check for invalid characters */
87 for (const char * p = url; *p != '\0'; p++) {
88 if (*p <= 32 || *p >= 127) {
89 return -1;
90 }
91 }
92
93 int result;
94 if (strncasecmp(url, "http://", 7) == 0) {
95 /* absoluteURI */
96
97 /* advance past the http:// */
98 const char * authority_start = url + 7;
99
100 /* look for a slash or question mark */
101 const char * p;
102 for (p = authority_start; *p != '/' && *p != '?' && *p != '\0'; p++) {
103 ;
104 }
105
106 char * host_and_port = xstrndup(authority_start, p - authority_start);
107 result = URL_parse_host_and_port(host_and_port, host, port);
108 free(host_and_port);
109 if (result != 0) {
110 return result;
111 }
112
113 result = URL_parse_abs_path_and_query(p, abs_path, query);
114 if (result != 0) {
115 free(*host);
116 *host = NULL;
117 return result;
118 }
119 }
120 else {
121 /* abs_path */
122 *host = NULL;
123 *port = 80;
124 result = URL_parse_abs_path_and_query(url, abs_path, query);
125 if (result != 0) {
126 return result;
127 }
128 }
129 result = 0;
130 return result;
131 }

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