presence_xml/add_events.c

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/*
 * 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:
 * --------
 *  2007-04-17  initial version (anca)
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libxml/parser.h>
#include "../../parser/parse_content.h"
#include "../../data_lump_rpl.h"
#include "../../ut.h"
#include "xcap_auth.h"
#include "notify_body.h"
#include "add_events.h"
#include "presence_xml.h"

extern int disable_presence;
extern int disable_winfo;
extern int disable_bla;

static str pu_415_rpl  = str_init("Unsupported media type");

int xml_add_events(void)
{
        pres_ev_t event;
        
        if (!disable_presence) {
                /* constructing presence event */
                memset(&event, 0, sizeof(pres_ev_t));
                event.name.s= "presence";
                event.name.len= 8;

                event.content_type.s= "application/pidf+xml";
                event.content_type.len= 20;

                event.type= PUBL_TYPE;
                event.req_auth= 1;
                event.apply_auth_nbody= pres_apply_auth;
                event.get_auth_status= pres_watcher_allowed;
                event.agg_nbody= pres_agg_nbody;
                event.evs_publ_handl= xml_publ_handl;
                event.free_body= free_xml_body;
                event.default_expires= 3600;
                event.get_rules_doc= pres_get_rules_doc;
                if(pres_add_event(&event)< 0)
                {
                        LM_ERR("while adding event presence\n");
                        return -1;
                }               
                LM_DBG("added 'presence' event to presence module\n");
        }

        if (!disable_winfo) {
                /* constructing presence.winfo event */
                memset(&event, 0, sizeof(pres_ev_t));
                event.name.s= "presence.winfo";
                event.name.len= 14;

                event.content_type.s= "application/watcherinfo+xml";
                event.content_type.len= 27;
                event.type= WINFO_TYPE;
                event.free_body= free_xml_body;
                event.default_expires= 3600;

                if(pres_add_event(&event)< 0)
                {
                        LM_ERR("while adding event presence.winfo\n");
                        return -1;
                }
                LM_DBG("added 'presence.winfo' event to presence module\n");
        }
        
        if (!disable_bla) {
                /* constructing bla event */
                memset(&event, 0, sizeof(pres_ev_t));
                event.name.s= "dialog;sla";
                event.name.len= 10;

                event.etag_not_new= 1;
                event.evs_publ_handl= xml_publ_handl;
                event.content_type.s= "application/dialog-info+xml";
                event.content_type.len= 27;
                event.type= PUBL_TYPE;
                event.free_body= free_xml_body;
                event.default_expires= 3600;
                if(pres_add_event(&event)< 0)
                {
                        LM_ERR("while adding event dialog;sla\n");
                        return -1;
                }
                LM_DBG("added 'dialog;sla' event to presence module\n");
        }
        
        return 0;
}
/*
 * in event specific publish handling - only check is good body format
 */
int     xml_publ_handl(struct sip_msg* msg)
{       
        str body= {0, 0};
        xmlDocPtr doc= NULL;

        if ( get_content_length(msg) == 0 )
                return 1;
        
        body.s=get_body(msg);
        if (body.s== NULL) 
        {
                LM_ERR("cannot extract body from msg\n");
                goto error;
        }
        /* content-length (if present) must be already parsed */

        body.len = get_content_length( msg );
        doc= xmlParseMemory( body.s, body.len );
        if(doc== NULL)
        {
                LM_ERR("bad body format\n");
                if(slb.freply(msg, 415, &pu_415_rpl) < 0)
                {
                        LM_ERR("while sending '415 Unsupported media type' reply\n");
                }
                goto error;
        }
        xmlFreeDoc(doc);
        xmlCleanupParser();
        xmlMemoryDump();
        return 1;

error:
        xmlFreeDoc(doc);
        xmlCleanupParser();
        xmlMemoryDump();
        return -1;

}