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93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
/* Cookies name-value pairs parser */
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/* $Id: parser.c,v 1.17 2005/02/28 10:25:21 zas Exp $ */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include "elinks.h"
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#include "cookies/parser.h"
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#include "util/string.h"
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/* In order to be able to compile parsetst, you should try to use minimum
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* of foreign stuff here. */
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#if 0
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static inline void
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debug_cookie_parser(struct cookie_str *cstr, unsigned char *pos, int ws, int eq)
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{
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int namelen = int_max(cstr->nam_end - cstr->str, 0);
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int valuelen = int_max(cstr->val_end - cstr->val_start, 0);
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printf("[%.*s] :: (%.*s) :: %d,%d [%s] %d\n",
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namelen, cstr->str,
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valuelen, cstr->val_start,
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ws, eq, pos, cstr->nam_end - cstr->str);
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}
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#else
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#define debug_cookie_parser(cstr, pos, ws, eq)
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#endif
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/* This function parses the starting name/value pair from the cookie string.
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* The syntax is simply: <name token> [ '=' <value token> ] with possible
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* spaces between tokens and '='. However spaces in the value token is also
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* allowed. See bug 174 for a description why. */
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/* Defined in RFC 2965. */
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/* Return cstr on success, NULL on failure. */
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struct cookie_str *
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parse_cookie_str(struct cookie_str *cstr, unsigned char *str)
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{
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memset(cstr, 0, sizeof(*cstr));
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cstr->str = str;
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/* Parse name token */
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while (*str != ';' && *str != '=' && !isspace(*str) && *str)
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str++;
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/* Bail out if name token is empty */
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if (str == cstr->str) return NULL;
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cstr->nam_end = str;
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skip_space(str);
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switch (*str) {
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case '\0':
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case ';':
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/* No value token, so just set to empty value */
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cstr->val_start = str;
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cstr->val_end = str;
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return cstr;
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case '=':
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/* Map 'a===b' to 'a=b' */
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do str++; while (*str == '=');
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break;
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default:
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/* No spaces in the name token is allowed */
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return NULL;
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}
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skip_space(str);
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/* Parse value token */
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/* Start with empty value, so even 'a=' will work */
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cstr->val_start = str;
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cstr->val_end = str;
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for (; *str != ';' && *str; str++) {
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/* Allow spaces in the value but leave out ending spaces */
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if (!isspace(*str))
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cstr->val_end = str + 1;
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}
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return cstr;
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}
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