/*-
 * Copyright (c) 1999, 2000, 2001, 2002, 2003 Lev Walkin <vlm@lionet.info>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $Id: cookies.c,v 1.3 2006/12/11 07:11:52 vlm Exp $
 */

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <errno.h>

#ifdef	HAVE_CONFIG_H
#include "config.h"
#endif

#ifdef	HAVE_UNISTD_H
#include <unistd.h>
#endif

#ifdef	HAVE_TIME_H
#include <time.h>
#endif

#ifdef	HAVE_SYS_TIME_H
#include <sys/time.h>
#endif

#ifdef	HAVE_ALLOCA_H
#include <alloca.h>
#endif

#include <sf_cgi.h>


int
set_cookie(char *name, char *value, char *optDomain, char *optPath, time_t optMaxAge, char *optComment, int optSecure) {

	if(value == NULL || name == NULL || *name == '\0') {
		errno = EINVAL;
		return -1;
	}

	printf("Set-Cookie: %s=\"%s\"", name, url_encode(value));
	if(optDomain)
		printf("; Domain=%s", optDomain);
	if(optPath)
		printf("; path=\"%s\"", optPath);
	if(optMaxAge >= 0)
		printf("; Max-Age=%ld", optMaxAge);
	if(optComment)
		printf("; Comment=\"%s\"", html_quote(optComment));
	if(optSecure)
		printf("; Secure");
	printf("\n");

	return 0;
}

static svect *_sf_cgi_csla = NULL;
static svect *_sf_cgi_cslv = NULL;

svect *
cookies() {
	if(_sf_cgi_csla == NULL)
		cookie("");
	return _sf_cgi_csla;
}

char *
cookie(char *name) {

	if(name == NULL) {
		errno = EINVAL;
		return NULL;
	}

	if(_sf_cgi_csla == NULL) {
		char *p, *s, *pt;

		pt=getenv("HTTP_COOKIE");
		if(pt == NULL || *pt == '\0') {
			/* No cookies */
			errno = ESRCH;
			return NULL;
		}
	
		p = (char *)alloca(strlen(pt) + 1);
		if(p == NULL) {
			errno = EINVAL;
			return NULL;
		}
	
		strcpy(p, pt);
	
		_sf_cgi_csla = sinit();
		if(_sf_cgi_csla == NULL)
			/* ENOMEM? */
			return NULL;
	
		_sf_cgi_cslv = sinit();
		if(_sf_cgi_cslv == NULL)
			/* ENOMEM? */
			return NULL;
	
		for(s=p; *p; p++) {
			if(*p == '=') {
				*p++='\0';
				if(sadd(_sf_cgi_csla, s) == -1) {
					sfree(_sf_cgi_csla);
					sfree(_sf_cgi_cslv);
					_sf_cgi_csla = NULL;
					_sf_cgi_cslv = NULL;
					/* ENOMEM? */
					return NULL;
				}
				s=p;
				if(*s == '"')
					p=strchr(++s, '"');
				else
					p=strchr(s, ';');
				if(p == NULL)
					p=strrchr(s, '\0');
				*p++ = 0;
				if( sadd(_sf_cgi_cslv, url_decode(s)) == -1 ) {
					sfree(_sf_cgi_csla);
					sfree(_sf_cgi_cslv);
					_sf_cgi_csla = NULL;
					_sf_cgi_cslv = NULL;
					/* ENOMEM? */
					return NULL;
				}
				if(*p == '"') p++;
				if(*p == ';') p++;
				while(*p == ' ') p++;
				s=p;
			
			}
		}
	}
	
	if(_sf_cgi_csla->count == 0) {
		errno = ESRCH;
		return NULL;
	}

	return scget2(_sf_cgi_csla, name, _sf_cgi_cslv);
}