pua_usrloc.c

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/*
 * $Id$
 *
 * pua_usrloc module - usrloc pua module
 *
 * 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:
 * --------
 *  2006-11-29  initial version (anca)
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libxml/parser.h>
#include <time.h>

#include "../../script_cb.h"
#include "../../sr_module.h"
#include "../../parser/parse_expires.h"
#include "../../dprint.h"
#include "../../mem/shm_mem.h"
#include "../../parser/msg_parser.h"
#include "../../str.h"
#include "../../mem/mem.h"
#include "../../pt.h"
#include "../usrloc/ul_mod.h"
#include "../usrloc/usrloc.h"
#include "../usrloc/ul_callback.h"
#include "../pua/pua_bind.h"
#include "pua_usrloc.h"
#include "api.h"

MODULE_VERSION

str default_domain= {NULL, 0};

int pua_ul_publish = 0;
int pua_ul_bflag = -1;
int pua_ul_bmask = 0;

pua_api_t pua;
str pres_prefix= {0, 0};

usrloc_api_t ul;

static int mod_init(void);

int pua_set_publish(struct sip_msg* , char*, char*);

send_publish_t pua_send_publish;
send_subscribe_t pua_send_subscribe;

static cmd_export_t cmds[]=
{
        {"pua_set_publish", (cmd_function)pua_set_publish, 0, 0, 0, REQUEST_ROUTE},
        {"bind_pua_usrloc", (cmd_function)bind_pua_usrloc, 1, 0, 0, 0},
        {0, 0, 0, 0, 0, 0} 
};

static param_export_t params[]={
        {"default_domain",       STR_PARAM, &default_domain.s    },
        {"entity_prefix",        STR_PARAM, &pres_prefix.s               },
        {"branch_flag",      INT_PARAM, &pua_ul_bflag            },
        {0,                                                      0,                     0            }
};

struct module_exports exports= {
        "pua_usrloc",                           
        DEFAULT_DLFLAGS,                        
        cmds,                                           
        params,                                         
        0,                                                      
        0,                                                      
        0,                                                      
        0,                                                      
        mod_init,                                       
        0,                                                      
        0,                                                      
        0                                                       
};
        
static int mod_init(void)
{
        bind_usrloc_t bind_usrloc;
        bind_pua_t bind_pua;
        
        if(default_domain.s == NULL )
        {       
                LM_ERR("default domain parameter not set\n");
                return -1;
        }
        default_domain.len= strlen(default_domain.s);
        
        if(pres_prefix.s == NULL )
        {       
                LM_DBG("No pres_prefix configured\n");
        }
        else
                pres_prefix.len= strlen(pres_prefix.s);

        bind_usrloc = (bind_usrloc_t)find_export("ul_bind_usrloc", 1, 0);
        if (!bind_usrloc)
        {
                LM_ERR("Can't bind usrloc\n");
                return -1;
        }
        if (bind_usrloc(&ul) < 0)
        {
                LM_ERR("Can't bind usrloc\n");
                return -1;
        }
        if(ul.register_ulcb == NULL)
        {
                LM_ERR("Could not import ul_register_ulcb\n");
                return -1;
        }

        if(ul.register_ulcb(UL_CONTACT_INSERT, ul_publish, 0)< 0)
        {
                LM_ERR("can not register callback for"
                                " insert\n");
                return -1;
        }
        if(ul.register_ulcb(UL_CONTACT_EXPIRE, ul_publish, 0)< 0)
        {
                LM_ERR("can not register callback for"
                                " expire\n");
                return -1;
        }
        
        if(ul.register_ulcb(UL_CONTACT_UPDATE, ul_publish, 0)< 0)
        {
                LM_ERR("can not register callback for update\n");
                return -1;
        }
        
        if(ul.register_ulcb(UL_CONTACT_DELETE, ul_publish, 0)< 0)
        {
                LM_ERR("can not register callback for delete\n");
                return -1;
        }
        
        bind_pua= (bind_pua_t)find_export("bind_pua", 1,0);
        if (!bind_pua)
        {
                LM_ERR("Can't bind pua\n");
                return -1;
        }
        
        if (bind_pua(&pua) < 0)
        {
                LM_ERR("Can't bind pua\n");
                return -1;
        }
        if(pua.send_publish == NULL)
        {
                LM_ERR("Could not import send_publish\n");
                return -1;
        }
        pua_send_publish= pua.send_publish;

        if(pua.send_subscribe == NULL)
        {
                LM_ERR("Could not import send_subscribe\n");
                return -1;
        }
        pua_send_subscribe= pua.send_subscribe;
        
        /* register post-script pua_unset_publish unset function */
        if(register_script_cb(pua_unset_publish, POST_SCRIPT_CB|REQUEST_CB, 0)<0)
        {
                LM_ERR("failed to register POST request callback\n");
                return -1;
        }

        if(pua_ul_bflag!=-1)
                pua_ul_bmask = 1 << pua_ul_bflag;

        return 0;
}

int bind_pua_usrloc(struct pua_usrloc_binds *pxb)
{
        if (pxb == NULL)
        {
                LM_WARN("bind_pua_usrloc: Cannot load pua_usrloc API into a NULL pointer\n");
                return -1;
        }

        pxb->pua_set_publish = pua_set_publish;
        return 0;
}