cmpapi.c

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/*
 * $Id$
 *
 * Copyright (C) 2001-2003 FhG Fokus
 *
 * This file is part of Kamailio, a free SIP server.
 *
 * Kamailio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version
 *
 * Kamailio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License 
 * along with this program; if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "../../parser/parse_uri.h"
#include "../../parser/parse_param.h"
#include "cmpapi.h"

int cmp_str(str *s1, str *s2)
{
        int ret = 0;
        int len = 0;
        if(s1->len==0 && s2->len==0)
                return 0;
        if(s1->len==0)
                return -1;
        if(s2->len==0)
                return 1;
        len = (s1->len<s2->len)?s1->len:s2->len;
        ret = strncmp(s1->s, s2->s, len);
        if(ret==0)
        {
                if(s1->len==s2->len)
                        return 0;
                if(s1->len<s2->len)
                        return -1;
                return 1;
        }
        return ret;
}

int cmpi_str(str *s1, str *s2)
{
        int ret = 0;
        int len = 0;
        if(s1->len==0 && s2->len==0)
                return 0;
        if(s1->len==0)
                return -1;
        if(s2->len==0)
                return 1;
        len = (s1->len<s2->len)?s1->len:s2->len;
        ret = strncasecmp(s1->s, s2->s, len);
        if(ret==0)
        {
                if(s1->len==s2->len)
                        return 0;
                if(s1->len<s2->len)
                        return -1;
                return 1;
        }
        return ret;
}

int cmp_hdrname_str(str *s1, str *s2)
{
        /* todo: parse hdr name and compare with short/long alternative */
        return cmpi_str(s1, s2);
}

int cmp_hdrname_strzn(str *s1, char *s2, size_t n)
{
        str s;
        s.s = s2;
        s.len = n;
        return cmpi_str(s1, &s);
}

int cmp_str_params(str *s1, str *s2)
{
        param_t* pl1 = NULL;
        param_hooks_t phooks1;
        param_t *pit1=NULL;
        param_t* pl2 = NULL;
        param_hooks_t phooks2;
        param_t *pit2=NULL;
        
        if (parse_params(s1, CLASS_ANY, &phooks1, &pl1)<0)
                return -1;
        if (parse_params(s2, CLASS_ANY, &phooks2, &pl2)<0)
                return -1;
        for (pit1 = pl1; pit1; pit1=pit1->next)
        {
                for (pit2 = pl2; pit2; pit2=pit2->next)
                {
                        if (pit1->name.len==pit2->name.len
                                && strncasecmp(pit1->name.s, pit2->name.s, pit2->name.len)==0)
                        {
                                if(pit1->body.len!=pit2->body.len
                                                || strncasecmp(pit1->body.s, pit2->body.s,
                                                        pit2->body.len)!=0)
                                        return 1;
                        }
                }
        }
        return 0;
}

int cmp_uri(struct sip_uri *uri1, struct sip_uri *uri2)
{
        if(uri1->type!=uri2->type)
                return 1;
        /* quick check for length */
        if(uri1->user.len!=uri2->user.len
                        || uri1->host.len!=uri2->host.len
                        || uri1->port.len!=uri2->port.len
                        || uri1->passwd.len!=uri2->passwd.len)
                return 1;
        if(cmp_str(&uri1->user, &uri2->user)!=0)
                return 1;
        if(cmp_str(&uri1->port, &uri2->port)!=0)
                return 1;
        if(cmp_str(&uri1->passwd, &uri2->passwd)!=0)
                return 1;
        if(cmpi_str(&uri1->host, &uri2->host)!=0)
                return 1;
        /* if no params, we are done */
        if(uri1->params.len==0 && uri2->params.len==0)
                return 0;
        if(uri1->params.len==0)
        {
                if(uri2->user_param.len!=0)
                        return 1;
                if(uri2->ttl.len!=0)
                        return 1;
                if(uri2->method.len!=0)
                        return 1;
                if(uri2->maddr.len!=0)
                        return 1;
        }
        if(uri2->params.len==0)
        {
                if(uri1->user_param.len!=0)
                        return 1;
                if(uri1->ttl.len!=0)
                        return 1;
                if(uri1->method.len!=0)
                        return 1;
                if(uri1->maddr.len!=0)
                        return 1;
        }
        return cmp_str_params(&uri1->params, &uri2->params);
}

int cmp_uri_str(str *s1, str *s2)
{
        struct sip_uri uri1;
        struct sip_uri uri2;

        /* todo: parse uri and compare the parts */
        if(parse_uri(s1->s, s1->len, &uri1)!=0)
                return -1;
        if(parse_uri(s2->s, s2->len, &uri2)!=0)
                return -1;
        return cmp_uri(&uri1, &uri2);
}

int cmp_aor(struct sip_uri *uri1, struct sip_uri *uri2)
{
        /* quick check for length */
        if(uri1->user.len!=uri2->user.len
                        || uri1->host.len!=uri2->host.len)
                return 1;
        if(cmp_str(&uri1->user, &uri2->user)!=0)
                return 1;
        if(cmp_str(&uri1->port, &uri2->port)!=0)
        {
                if(uri1->port.len==0 && uri2->port_no!=5060)
                        return 1;
                if(uri2->port.len==0 && uri1->port_no!=5060)
                        return 1;
        }
        if(cmpi_str(&uri1->host, &uri2->host)!=0)
                return 1;
        return 0;
}

int cmp_aor_str(str *s1, str *s2)
{
        struct sip_uri uri1;
        struct sip_uri uri2;

        /* todo: parse uri and compare the parts */
        if(parse_uri(s1->s, s1->len, &uri1)!=0)
                return -1;
        if(parse_uri(s2->s, s2->len, &uri2)!=0)
                return -1;
        return cmp_aor(&uri1, &uri2);
}