2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005 Richard Kettlewell
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.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
34 int urldecode(struct sink
*sink
, const char *ptr
, size_t n
) {
40 if((d1
= unhexdigit(ptr
[0])) == -1
41 || (d2
= unhexdigit(ptr
[1])) == -1)
53 if(sink_writec(sink
,c
) < 0)
59 static char *decode(const char *ptr
, size_t n
) {
65 if(urldecode(s
, ptr
, n
))
71 struct kvp
*kvp_urldecode(const char *ptr
, size_t n
) {
72 struct kvp
*kvp
, **kk
= &kvp
, *k
;
73 const char *q
, *r
, *top
= ptr
+ n
, *next
;
76 *kk
= k
= xmalloc(sizeof *k
);
77 if(!(q
= memchr(ptr
, '=', top
- ptr
)))
79 if(!(k
->name
= decode(ptr
, q
- ptr
))) break;
80 if((r
= memchr(ptr
, '&', top
- ptr
)))
86 if(!(k
->value
= decode(q
+ 1, r
- (q
+ 1)))) break;
94 int urlencode(struct sink
*sink
, const char *s
, size_t n
) {
102 if((c
>= '0' && c
<= '9')
103 || (c
>= 'a' && c
<= 'z')
104 || (c
>= 'A' && c
<= 'Z')) {
105 /* RFC2396 2.3 unreserved characters */
115 /* additional unreserved characters */
117 if(sink_writec(sink
, c
) < 0)
120 if(sink_printf(sink
, "%%%02x", (unsigned int)c
) < 0)
127 /** @brief URL-encode @p s
128 * @param s String to encode
129 * @return Encoded string
131 const char *urlencodestring(const char *s
) {
135 urlencode(sink_dynstr(&d
), s
, strlen(s
));
136 dynstr_terminate(&d
);
140 /** @brief URL-decode @p s
141 * @param s String to decode
142 * @param ns Length of string
143 * @return Decoded string
145 const char *urldecodestring(const char *s
, size_t ns
) {
149 urldecode(sink_dynstr(&d
), s
, ns
);
150 dynstr_terminate(&d
);
154 char *kvp_urlencode(const struct kvp
*kvp
, size_t *np
) {
159 sink
= sink_dynstr(&d
);
161 urlencode(sink
, kvp
->name
, strlen(kvp
->name
));
162 dynstr_append(&d
, '=');
163 urlencode(sink
, kvp
->value
, strlen(kvp
->value
));
164 if((kvp
= kvp
->next
))
165 dynstr_append(&d
, '&');
168 dynstr_terminate(&d
);
174 int kvp_set(struct kvp
**kvpp
, const char *name
, const char *value
) {
177 for(kk
= kvpp
; (k
= *kk
) && strcmp(name
, k
->name
); kk
= &k
->next
)
181 if(strcmp(k
->value
, value
)) {
182 k
->value
= xstrdup(value
);
192 *kk
= k
= xmalloc(sizeof *k
);
193 k
->name
= xstrdup(name
);
194 k
->value
= xstrdup(value
);
201 const char *kvp_get(const struct kvp
*kvp
, const char *name
) {
202 for(;kvp
&& strcmp(kvp
->name
, name
); kvp
= kvp
->next
)
204 return kvp ? kvp
->value
: 0;