Annotation of libaitwww/src/tools.c, revision 1.2.6.1
1.1 misho 1: /*************************************************************************
2: * (C) 2012 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
3: * by Michael Pounov <misho@elwix.org>
4: *
5: * $Author: misho $
1.2.6.1 ! misho 6: * $Id: tools.c,v 1.2 2012/03/10 00:26:49 misho Exp $
1.1 misho 7: *
8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #include "global.h"
47:
48:
1.2.6.1 ! misho 49: /*
! 50: * www_cmp() - Compare two string
! 51: *
! 52: * @ct = content text from www
! 53: * @s = string
! 54: * return: 0 are equal or !0 are different
! 55: */
1.1 misho 56: int
57: www_cmp(const char *ct, const char *s)
58: {
59: char *sc;
60:
61: assert(ct && s);
62:
63: while (isspace(*ct))
64: ct++;
65:
66: if (!(sc = strchr(ct, ';')))
67: sc = strchr(ct, '\x0');
68: while (isspace(*(sc - 1)))
69: sc--;
70:
71: if (strlen(s) != sc - ct)
72: return -1;
73: return strncasecmp(ct, s, sc - ct);
74: }
75:
1.2.6.1 ! misho 76: /*
! 77: * www_cmptype() - Compare context type
! 78: *
! 79: * @ct = content text from www
! 80: * @type = content type
! 81: * return: 0 are equal or !0 are different
! 82: */
1.1 misho 83: int
84: www_cmptype(const char *ct, const char *type)
85: {
86: char *sl;
87:
88: assert(ct && type);
89:
90: while (isspace(*ct))
91: ct++;
92:
93: if (!(sl = strchr(ct, '/')))
94: return -1;
95:
96: if (strlen(type) != sl - ct)
97: return 1;
98: return strncasecmp(ct, type, sl - ct);
99: }
100:
1.2.6.1 ! misho 101: /*
! 102: * www_getpair() - Get AV pair from WWW query string
! 103: *
! 104: * @str = query string
! 105: * @delim = delimiter
! 106: * return: NULL error or AV pair, must be free() after use!
! 107: */
1.1 misho 108: char *
109: www_getpair(char ** __restrict str, const char *delim)
110: {
111: char *tr, *s = NULL;
112: int cx;
113:
114: assert(str && *str && delim);
115:
116: cx = strcspn(*str, delim);
117: tr = *str + cx;
118:
119: s = malloc(cx + 1);
120: if (!s) {
121: LOGERR;
122: return NULL;
1.2.6.1 ! misho 123: } else
! 124: strlcpy(s, *str, cx + 1);
1.1 misho 125:
126: *str = tr;
1.2 misho 127: if (**str)
1.1 misho 128: (*str)++;
129:
130: return s;
131: }
132:
1.2.6.1 ! misho 133: /*
! 134: * www_x2c() - Hex from string to digit
! 135: *
! 136: * @str = string
! 137: * return: digit
! 138: */
1.1 misho 139: inline char
140: www_x2c(const char *str)
141: {
142: register char digit;
143:
144: assert(str);
145:
146: digit = (str[0] >= 'A' ? ((str[0] & 0xdf) - 'A') + 10 : (str[0] - '0'));
147: digit *= 16;
148: digit += (str[1] >= 'A' ? ((str[1] & 0xdf) - 'A') + 10 : (str[1] - '0'));
149:
150: return digit;
151: }
152:
1.2.6.1 ! misho 153: /*
! 154: * www_unescape() - Unescape/decode WWW query string to host string
! 155: *
! 156: * @str = string
! 157: * return: none
! 158: */
1.1 misho 159: inline void
160: www_unescape(char * __restrict str)
161: {
162: register int i, j;
163:
164: assert(str);
165:
166: for (i = j = 0; str[j]; i++, j++) {
167: str[i] = str[j];
168:
169: if (str[j] == '+')
170: str[i] = ' ';
171: else if (str[j] == '%') {
172: str[i] = www_x2c(&str[j + 1]);
173: j += 2;
174: }
175: }
176:
177: str[i] = 0;
178: }
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