modules_k/presence_dialoginfo/pidf.c

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/*
 * $Id: pidf.c 1953 2007-04-04 08:50:33Z anca_vamanu $
 *
 * presence module - presence server implementation
 *
 * Copyright (C) 2006 Voice Sistem S.R.L.
 *
 * 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
 *
 * History:
 * --------
 *  2007-04-14  initial version (anca)
 */

#ifdef __OS_linux
        #define _XOPEN_SOURCE 600          /* glibc2 on linux */
        #define _BSD_SOURCE 1                           /* needed on linux to "fix" the effect
                                                                                  of the above define on
                                                                                  features.h/unistd.h syscall() */
#elif defined __OS_solaris
        #define _XOPEN_SOURCE_EXTENDED 1   /* solaris */
#endif

#include <time.h>

#undef _XOPEN_SOURCE
#undef _XOPEN_SOURCE_EXTENDED

#include <string.h>
#include <stdlib.h>
#include <libxml/parser.h>
#include "../../dprint.h"
#include "../../sr_module.h"
#include "pidf.h"

xmlAttrPtr xmlNodeGetAttrByName(xmlNodePtr node, const char *name)
{
        xmlAttrPtr attr = node->properties;
        while (attr) {
                if (xmlStrcasecmp(attr->name, (unsigned char*)name) == 0)
                        return attr;
                attr = attr->next;
        }
        return NULL;
}

char *xmlNodeGetAttrContentByName(xmlNodePtr node, const char *name)
{
        xmlAttrPtr attr = xmlNodeGetAttrByName(node, name);
        if (attr)
                return (char*)xmlNodeGetContent(attr->children);
        else
                return NULL;
}

xmlNodePtr xmlNodeGetChildByName(xmlNodePtr node, const char *name)
{
        xmlNodePtr cur = node->children;
        while (cur) {
                if (xmlStrcasecmp(cur->name, (unsigned char*)name) == 0)
                        return cur;
                cur = cur->next;
        }
        return NULL;
}

xmlNodePtr xmlNodeGetNodeByName(xmlNodePtr node, const char *name,
                                                                                                                        const char *ns)
{
        xmlNodePtr cur = node;
        while (cur) {
                xmlNodePtr match = NULL;
                if (xmlStrcasecmp(cur->name, (unsigned char*)name) == 0) {
                        if (!ns || (cur->ns && xmlStrcasecmp(cur->ns->prefix,
                                                        (unsigned char*)ns) == 0))
                                return cur;
                }
                match = xmlNodeGetNodeByName(cur->children, name, ns);
                if (match)
                        return match;
                cur = cur->next;
        }
        return NULL;
}

char *xmlNodeGetNodeContentByName(xmlNodePtr root, const char *name,
                const char *ns)
{
        xmlNodePtr node = xmlNodeGetNodeByName(root, name, ns);
        if (node)
                return (char*)xmlNodeGetContent(node->children);
        else
                return NULL;
}

xmlNodePtr xmlDocGetNodeByName(xmlDocPtr doc, const char *name, const char *ns)
{
        xmlNodePtr cur = doc->children;
        return xmlNodeGetNodeByName(cur, name, ns);
}

char *xmlDocGetNodeContentByName(xmlDocPtr doc, const char *name, 
                const char *ns)
{
        xmlNodePtr node = xmlDocGetNodeByName(doc, name, ns);
        if (node)
                return (char*)xmlNodeGetContent(node->children);
        else
                return NULL;
}

time_t xml_parse_dateTime(char* xml_time_str)
{
        struct tm tm;
        char * p;
        int h, m;
        char h1, h2, m1, m2;
        int sign= 1;
        signed int timezone_diff= 0;

        p= strptime(xml_time_str, "%F", &tm);
        if(p== NULL)
        {
                printf("error: failed to parse time\n");
                return 0;
        }
        p++;
        p= strptime(p, "%T", &tm);
        if(p== NULL)
        {
                printf("error: failed to parse time\n");
                return 0;
        }
        
        if(*p== '\0')
                goto done;

        if(*p== '.')
        {
                p++;
                /* read the fractionar part of the seconds*/
                while(*p!= '\0' && *p>= '0' && *p<= '9')
                {
                        p++;
                }
        }

        if(*p== '\0')
                goto done;

        
        /* read time zone */

        if(*p== 'Z')
        {
                goto done;
        }

        if(*p== '+')
                sign= -1;

        p++;

        if(sscanf(p, "%c%c:%c%c", &h1, &h2, &m1, &m2) < 0) {
                printf("error: failed to parse time\n");
                return 0;
        }
        
        h= (h1- '0')*10+ h2- '0';
        m= (m1- '0')*10+ m2- '0';

        timezone_diff= sign* ((m+ h* 60)* 60);

done:
        return (mktime(&tm) + timezone_diff);   
}