/*
 * pua_xmpp module - presence SIP - XMPP Gateway
 *
 * Copyright (C) 2007 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

/*! \file
 * \brief Kamailio presence gateway: SIP/SIMPLE -- XMPP
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <libxml/parser.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;
}
xmlNodePtr xmlDocGetNodeByName(xmlDocPtr doc, const char *name, const char *ns)
{
	xmlNodePtr cur = doc->children;
	return xmlNodeGetNodeByName(cur, name, ns);
}

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;
}
