/*
 * rls module - resource list server
 *
 * Copyright (C) 2007 Voice Sistem S.R.L.
 *
 * This file is part of opensips, a free SIP server.
 *
 * opensips 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
 *
 * opensips 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
 *
 * History:
 * --------
 *  2007-09-11  initial version (Anca Vamanu)
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>

#include "../../sr_module.h"
#include "../../pt.h"
#include "../../db/db.h"
#include "../../dprint.h"
#include "../../error.h"
#include "../../ut.h"
#include "../../mem/mem.h"
#include "../../mem/shm_mem.h"
#include "../../mi/mi.h"
#include "../tm/tm_load.h"
#include "../signaling/signaling.h"
#include "../presence/bind_presence.h"
#include "../presence/hash.h"
#include "../pua/pua_bind.h"
#include "../pua/pidf.h"
#include "../xcap/api.h"
#include "rls.h"
#include "subscribe.h"
#include "notify.h"
#include "resource_notify.h"



#define P_TABLE_VERSION 1
#define W_TABLE_VERSION 2

/** database connection */
db_con_t *rls_db = NULL;
db_func_t rls_dbf;

/** modules variables */
str contact_user = str_init("rls");
str presence_server = {NULL, 0};
int waitn_time = 50;
str rlsubs_table= str_init("rls_watchers");
str rlpres_table= str_init("rls_presentity");

int hash_size= 512;
shtable_t rls_table;
int pid;
contains_event_t pres_contains_event;
search_event_t pres_search_event;
get_event_list_t pres_get_ev_list;
int clean_period= 100;
char* xcap_root;
unsigned int xcap_port= 8000;
int rls_restore_db_subs(void);

/* xcap API */
str db_url = {NULL, 0};
str rls_xcap_table = {NULL, 0};
int rls_integrated_xcap_server = 0;
normalize_sip_uri_t normalizeSipUri;
parse_xcap_uri_t xcapParseUri;
get_xcap_doc_t xcapDbGetDoc;

/** libxml api */
xmlDocGetNodeByName_t XMLDocGetNodeByName;
xmlNodeGetNodeByName_t XMLNodeGetNodeByName;
xmlNodeGetNodeContentByName_t XMLNodeGetNodeContentByName;
xmlNodeGetAttrContentByName_t XMLNodeGetAttrContentByName;

/* functions imported from presence to handle subscribe hash table */
new_shtable_t pres_new_shtable;
insert_shtable_t pres_insert_shtable;
search_shtable_t pres_search_shtable;
update_shtable_t pres_update_shtable;
delete_shtable_t pres_delete_shtable;
destroy_shtable_t pres_destroy_shtable;
mem_copy_subs_t  pres_copy_subs;
update_db_subs_t pres_update_db_subs;
extract_sdialog_info_t pres_extract_sdialog_info;
int rls_events= EVENT_PRESENCE;
int to_presence_code= 10;
int rls_max_expires= 7200;

/* functions imported from xcap_client module */
xcapGetNewDoc_t xcap_GetNewDoc= 0;

/* functions imported from pua module*/
send_subscribe_t pua_send_subscribe;
get_record_id_t pua_get_record_id;
get_subs_list_t pua_get_subs_list;

/* TM bind */
struct tm_binds tmb;
/* SIGNALING bind */
struct sig_binds rls_sigb;

str str_rlsubs_did_col = str_init("rlsubs_did");
str str_resource_uri_col = str_init("resource_uri");
str str_updated_col = str_init("updated");
str str_auth_state_col = str_init("auth_state");
str str_reason_col = str_init("reason");
str str_content_type_col = str_init("content_type");
str str_presence_state_col = str_init("presence_state");
str str_expires_col = str_init("expires");
str str_presentity_uri_col = str_init("presentity_uri");
str str_event_col = str_init("event");
str str_event_id_col = str_init("event_id");
str str_to_user_col = str_init("to_user");
str str_to_domain_col = str_init("to_domain");
str str_watcher_username_col = str_init("watcher_username");
str str_watcher_domain_col = str_init("watcher_domain");
str str_callid_col = str_init("callid");
str str_to_tag_col = str_init("to_tag");
str str_from_tag_col = str_init("from_tag");
str str_local_cseq_col = str_init("local_cseq");
str str_remote_cseq_col = str_init("remote_cseq");
str str_record_route_col = str_init("record_route");
str str_socket_info_col = str_init("socket_info");
str str_contact_col = str_init("contact");
str str_local_contact_col = str_init("local_contact");
str str_version_col = str_init("version");
str str_status_col = str_init("status");
str str_username_col = str_init("username");
str str_domain_col = str_init("domain");
str str_doc_type_col = str_init("doc_type");
str str_etag_col = str_init("etag");
str str_doc_col = str_init("doc");
str str_doc_uri_col = str_init("doc_uri");


/** module functions */

static int mod_init(void);
static int child_init(int);
void destroy(void);
int rlsubs_table_restore();
void rlsubs_table_update(unsigned int ticks,void *param);
int add_rls_event(modparam_t type, void* val);
int parse_xcap_root(void);
mi_response_t *mi_update_subscriptions(const mi_params_t *params,
								struct mi_handler *async_hdl);


static const cmd_export_t cmds[]={
	{"rls_handle_subscribe",     (cmd_function)rls_handle_subscribe, {{0,0,0}},
		REQUEST_ROUTE},
	{"rls_handle_notify",        (cmd_function)rls_handle_notify, {{0,0,0}},
		REQUEST_ROUTE},
	{0,0,{{0,0,0}},0}
};

static const param_export_t params[]={
	{ "contact_user",           STR_PARAM, &contact_user.s             },
	{ "presence_server",        STR_PARAM, &presence_server.s          },
	{ "rlsubs_table",           STR_PARAM, &rlsubs_table.s             },
	{ "rlpres_table",           STR_PARAM, &rlpres_table.s             },
	{ "waitn_time",             INT_PARAM, &waitn_time                 },
	{ "clean_period",           INT_PARAM, &clean_period               },
	{ "max_expires",            INT_PARAM, &rls_max_expires            },
	{ "hash_size",              INT_PARAM, &hash_size                  },
	{ "to_presence_code",       INT_PARAM, &to_presence_code           },
	{ "xcap_root",              STR_PARAM, &xcap_root                  },
	/*address and port(default: 80):"http://192.168.2.132:8000/xcap-root"*/
	{ "rls_event",              STR_PARAM|USE_FUNC_PARAM,(void*)add_rls_event},
	{  0,                       0,              0                       }
};

static const mi_export_t mi_cmds[] = {
	{ "rls_update_subscriptions", 0, 0, 0, {
		{mi_update_subscriptions, {"presentity_uri", 0}},
		{EMPTY_MI_RECIPE}}
	},
	{EMPTY_MI_EXPORT}
};

static const dep_export_t deps = {
	{ /* OpenSIPS module dependencies */
		{ MOD_TYPE_DEFAULT, "tm",        DEP_ABORT },
		{ MOD_TYPE_DEFAULT, "signaling", DEP_ABORT },
		{ MOD_TYPE_DEFAULT, "xcap",      DEP_ABORT },
		{ MOD_TYPE_DEFAULT, "pua",       DEP_ABORT },
		{ MOD_TYPE_DEFAULT, "presence",  DEP_ABORT },
		{ MOD_TYPE_NULL, NULL, 0 },
	},
	{ /* modparam dependencies */
		{ NULL, NULL },
	},
};

/** module exports */
struct module_exports exports= {
	"rls",                      /* module name */
	MOD_TYPE_DEFAULT,           /* class of this module */
	MODULE_VERSION,
	DEFAULT_DLFLAGS,            /* dlopen flags */
	0,				            /* load function */
	&deps,                      /* OpenSIPS module dependencies */
	cmds,                       /* exported functions */
	0,                          /* exported async functions */
	params,                     /* exported parameters */
	0,                          /* exported statistics */
	mi_cmds,                    /* exported MI functions */
	0,                          /* exported pseudo-variables */
	0,							/* exported transformations */
	0,                          /* extra processes */
	0,                          /* module pre-initialization function */
	mod_init,                   /* module initialization function */
	(response_function) 0,      /* response handling function */
	(destroy_function) destroy, /* destroy function */
	child_init,                 /* per-child init function */
	0                           /* reload confirm function */
};

/**
 * init module function
 */
static int mod_init(void)
{
	bind_presence_t bind_presence;
	presence_api_t pres;
	bind_pua_t bind_pua;
	pua_api_t pua;
	bind_libxml_t bind_libxml;
	libxml_api_t libxml_api;
	bind_xcap_t bind_xcap;
	xcap_api_t xcap_api;
	bind_xcap_client_t bind_xcap_client;
	xcap_client_api_t xcap_client_api;

	LM_DBG("start\n");

	contact_user.len = strlen(contact_user.s);

	if (presence_server.s)
		presence_server.len = strlen(presence_server.s);

	/* load XCAP API */
	bind_xcap = (bind_xcap_t)find_export("bind_xcap", 0);
	if (!bind_xcap)
	{
		LM_ERR("Can't bind xcap\n");
		return -1;
	}

	if (bind_xcap(&xcap_api) < 0)
	{
		LM_ERR("Can't bind xcap\n");
		return -1;
	}
	rls_integrated_xcap_server = xcap_api.integrated_server;
	db_url = xcap_api.db_url;
	rls_xcap_table = xcap_api.xcap_table;
	normalizeSipUri = xcap_api.normalize_sip_uri;
	xcapParseUri = xcap_api.parse_xcap_uri;
	xcapDbGetDoc = xcap_api.get_xcap_doc;

	if(!rls_integrated_xcap_server)
	{
		if(xcap_root== NULL)
		{
			LM_ERR("xcap_root parameter not set\n");
			return -1;
		}
		if(parse_xcap_root() < 0)
		{
			LM_ERR("wrong format for xcap_root parameter\n");
			return -1;
		}
	}

	/* load SIGNALING API */
	if(load_sig_api(&rls_sigb)< 0)
	{
		LM_ERR("can't load signaling functions\n");
		return -1;
	}

	/* load all TM stuff */
	if(load_tm_api(&tmb)==-1)
	{
		LM_ERR("can't load tm functions\n");
		return -1;
	}
	bind_presence= (bind_presence_t)find_export("bind_presence",0);
	if (!bind_presence)
	{
		LM_ERR("Can't bind presence\n");
		return -1;
	}
	if (bind_presence(&pres) < 0)
	{
		LM_ERR("Can't bind presence\n");
		return -1;
	}
	pres_contains_event = pres.contains_event;
	pres_search_event   = pres.search_event;
	pres_get_ev_list    = pres.get_event_list;
	pres_new_shtable    = pres.new_shtable;
	pres_destroy_shtable= pres.destroy_shtable;
	pres_insert_shtable = pres.insert_shtable;
	pres_delete_shtable = pres.delete_shtable;
	pres_update_shtable = pres.update_shtable;
	pres_search_shtable = pres.search_shtable;
	pres_copy_subs      = pres.mem_copy_subs;
	pres_update_db_subs = pres.update_db_subs;
	pres_extract_sdialog_info= pres.extract_sdialog_info;

	if(!pres_contains_event || !pres_get_ev_list || !pres_new_shtable ||
		!pres_destroy_shtable || !pres_insert_shtable || !pres_delete_shtable
		 || !pres_update_shtable || !pres_search_shtable || !pres_copy_subs
		 || !pres_extract_sdialog_info)
	{
		LM_ERR("importing functions from presence module\n");
		return -1;
	}

	rlsubs_table.len= strlen(rlsubs_table.s);
	rlpres_table.len= strlen(rlpres_table.s);
	rls_xcap_table.len= strlen(rls_xcap_table.s);

	/* binding to mysql module  */
	if (db_bind_mod(&db_url, &rls_dbf))
	{
		LM_ERR("Database module not found\n");
		return -1;
	}

	if (!DB_CAPABILITY(rls_dbf, DB_CAP_ALL)) {
		LM_ERR("Database module does not implement all functions"
				" needed by the module\n");
		return -1;
	}

	rls_db = rls_dbf.init(&db_url);
	if (!rls_db)
	{
		LM_ERR("while connecting database\n");
		return -1;
	}
	/* verify table version */
	if((db_check_table_version(&rls_dbf, rls_db, &rlsubs_table, W_TABLE_VERSION) < 0) ||
		(db_check_table_version(&rls_dbf, rls_db, &rlpres_table, P_TABLE_VERSION) < 0)) {
			LM_ERR("error during table version check.\n");
			return -1;
	}

	if(hash_size<=1)
		hash_size= 512;
	else
		hash_size = 1<<hash_size;

	rls_table= pres_new_shtable(hash_size);
	if(rls_table== NULL)
	{
		LM_ERR("while creating new hash table\n");
		return -1;
	}
	/*
	if(rls_restore_db_subs()< 0)
	{
		LM_ERR("while restoring rl watchers table\n");
		return -1;
	}
	*/

	if(rls_db)
		rls_dbf.close(rls_db);
	rls_db = NULL;

	if(waitn_time<= 0)
		waitn_time= 50;

	/* bind libxml wrapper functions */

	if((bind_libxml=(bind_libxml_t)find_export("bind_libxml_api", 0))== NULL)
	{
		LM_ERR("can't import bind_libxml_api\n");
		return -1;
	}
	if(bind_libxml(&libxml_api)< 0)
	{
		LM_ERR("can not bind libxml api\n");
		return -1;
	}
	XMLNodeGetAttrContentByName= libxml_api.xmlNodeGetAttrContentByName;
	XMLDocGetNodeByName= libxml_api.xmlDocGetNodeByName;
	XMLNodeGetNodeByName= libxml_api.xmlNodeGetNodeByName;
	XMLNodeGetNodeContentByName= libxml_api.xmlNodeGetNodeContentByName;

	if(XMLNodeGetAttrContentByName== NULL || XMLDocGetNodeByName== NULL ||
			XMLNodeGetNodeByName== NULL || XMLNodeGetNodeContentByName== NULL)
	{
		LM_ERR("libxml wrapper functions could not be bound\n");
		return -1;
	}

	/* bind pua */
	bind_pua= (bind_pua_t)find_export("bind_pua",0);
	if (!bind_pua)
	{
		LM_ERR("Can't bind pua\n");
		return -1;
	}

	if (bind_pua(&pua) < 0)
	{
		LM_ERR("mod_init Can't bind pua\n");
		return -1;
	}
	if(pua.send_subscribe == NULL)
	{
		LM_ERR("Could not import send_subscribe\n");
		return -1;
	}
	pua_send_subscribe= pua.send_subscribe;

	if(pua.get_record_id == NULL)
	{
		LM_ERR("Could not import send_subscribe\n");
		return -1;
	}
	pua_get_record_id= pua.get_record_id;

	if(pua.get_subs_list == NULL)
	{
		LM_ERR("Could not import get_subs_list\n");
		return -1;
	}
	pua_get_subs_list= pua.get_subs_list;

	if(!rls_integrated_xcap_server)
	{
		/* bind xcap */
		bind_xcap_client = (bind_xcap_client_t)find_export("bind_xcap_client", 0);
		if (!bind_xcap_client)
		{
			LM_ERR("Can't bind xcap_client\n");
			return -1;
		}

		if (bind_xcap_client(&xcap_client_api) < 0)
		{
			LM_ERR("Can't bind xcap\n");
			return -1;
		}
		xcap_GetNewDoc = xcap_client_api.getNewDoc;
		if(xcap_GetNewDoc== NULL)
		{
			LM_ERR("Can't import xcap_client functions\n");
			return -1;
		}
	}
	register_timer( "rls-notify", timer_send_notify, 0, waitn_time,
		TIMER_FLAG_DELAY_ON_DELAY);

	register_timer( "rls-pclean", rls_presentity_clean, 0, clean_period,
		TIMER_FLAG_DELAY_ON_DELAY);

	register_timer( "rls-dbupdate", rlsubs_table_update, 0, clean_period,
		TIMER_FLAG_SKIP_ON_DELAY);

	return 0;
}

int parse_xcap_root(void)
{
	char* sep;
	sep= strchr(xcap_root, ':');

	if(sep)
	{
		char* sep2= NULL;
		str port_str;

		sep2= strchr(sep+ 1, '/');
		if(!sep2)
			sep2 = xcap_root + strlen(xcap_root);

		port_str.s= sep+ 1;
		port_str.len= sep2- port_str.s;

		if(str2int(&port_str, &xcap_port)< 0)
		{
			LM_ERR("converting string to int [port]= %.*s\n",port_str.len,
					port_str.s);
			return -1;
		}
		if(xcap_port> 65535)
		{
			LM_ERR("wrong xcap server port\n");
			return -1;
		}
	}
	return 0;
}

/**
 * Initialize children
 */
static int child_init(int rank)
{
	LM_DBG("child [%d]  pid [%d]\n", rank, getpid());
	if (rls_dbf.init==0)
	{
		LM_CRIT("database not bound\n");
		return -1;
	}
	rls_db = rls_dbf.init(&db_url);
	if (!rls_db)
	{
		LM_ERR("child %d: Error while connecting database\n",
				rank);
		return -1;
	}

	LM_DBG("child %d: Database connection opened successfully\n", rank);

	pid= my_pid();
	return 0;
}

/*
 * destroy function
 */
void destroy(void)
{
	LM_DBG("start\n");

	if(rls_table)
	{
		if(rls_dbf.init && child_init(process_no)==0)
			rlsubs_table_update(0, 0);
		pres_destroy_shtable(rls_table, hash_size);
	}
	if(rls_db && rls_dbf.close)
		rls_dbf.close(rls_db);
}

int handle_expired_record(subs_t* s)
{
	int expires = s->expires;
	s->expires = 0;
	/* send Notify with state terminated*/
	if( rls_send_notify(s, NULL, NULL, NULL)< 0)
	{
		LM_ERR("in function send_notify\n");
		s->expires = expires;
		return -1;
	}
	s->expires = expires;

	return 0;
}

void rlsubs_table_update(unsigned int ticks,void *param)
{
	int no_lock= 0;

	if(ticks== 0 && param == NULL)
		no_lock= 1;

	if(rls_dbf.use_table(rls_db, &rlsubs_table)< 0)
	{
		LM_ERR("sql use table failed\n");
		return;
	}
	pres_update_db_subs(rls_db, &rls_dbf, rls_table, hash_size,
			no_lock, handle_expired_record);

}

int rls_restore_db_subs(void)
{
	db_key_t result_cols[22];
	db_res_t *res= NULL;
	db_row_t *row = NULL;
	db_val_t *row_vals= NULL;
	int i;
	int n_result_cols= 0;
	int pres_uri_col, expires_col, from_user_col, from_domain_col,to_user_col;
	int callid_col,totag_col,fromtag_col,to_domain_col,sockinfo_col,reason_col;
	int event_col,contact_col,record_route_col, event_id_col, status_col;
	int remote_cseq_col, local_cseq_col, local_contact_col, version_col;
	subs_t s;
	str ev_sname;
	pres_ev_t* event= NULL;
	event_t parsed_event;
	unsigned int expires;
	unsigned int hash_code;
	str sockinfo_str;
	int port, proto;
	str host;



	result_cols[pres_uri_col=n_result_cols++] = &str_presentity_uri_col;
	result_cols[expires_col=n_result_cols++] = &str_expires_col;
	result_cols[event_col=n_result_cols++] = &str_event_col;
	result_cols[event_id_col=n_result_cols++] = &str_event_id_col;
	result_cols[to_user_col=n_result_cols++] = &str_to_user_col;
	result_cols[to_domain_col=n_result_cols++] = &str_to_domain_col;
	result_cols[from_user_col=n_result_cols++] = &str_watcher_username_col;
	result_cols[from_domain_col=n_result_cols++] = &str_watcher_domain_col;
	result_cols[callid_col=n_result_cols++] = &str_callid_col;
	result_cols[totag_col=n_result_cols++] = &str_to_tag_col;
	result_cols[fromtag_col=n_result_cols++] = &str_from_tag_col;
	result_cols[local_cseq_col= n_result_cols++] = &str_local_cseq_col;
	result_cols[remote_cseq_col= n_result_cols++] = &str_remote_cseq_col;
	result_cols[record_route_col= n_result_cols++] = &str_record_route_col;
	result_cols[sockinfo_col= n_result_cols++] = &str_socket_info_col;
	result_cols[contact_col= n_result_cols++] = &str_contact_col;
	result_cols[local_contact_col= n_result_cols++] = &str_local_contact_col;
	result_cols[version_col= n_result_cols++] = &str_version_col;
	result_cols[status_col= n_result_cols++] = &str_status_col;
	result_cols[reason_col= n_result_cols++] = &str_reason_col;

	if(!rls_db)
	{
		LM_ERR("null database connection\n");
		return -1;
	}
	if(rls_dbf.use_table(rls_db, &rlsubs_table)< 0)
	{
		LM_ERR("in use table\n");
		return -1;
	}

	if(rls_dbf.query(rls_db,0, 0, 0, result_cols,0, n_result_cols, 0,&res)< 0)
	{
		LM_ERR("while querrying table\n");
		if(res)
		{
			rls_dbf.free_result(rls_db, res);
			res = NULL;
		}
		return -1;
	}
	if(res== NULL)
		return -1;

	if(res->n<=0)
	{
		LM_INFO("The query returned no result\n");
		rls_dbf.free_result(rls_db, res);
		res = NULL;
		return 0;
	}

	LM_DBG("found %d db entries\n", res->n);

	for(i =0 ; i< res->n ; i++)
	{
		row = &res->rows[i];
		row_vals = ROW_VALUES(row);
		memset(&s, 0, sizeof(subs_t));

		expires= row_vals[expires_col].val.int_val;

		if(expires< (int)time(NULL))
			continue;

		s.pres_uri.s= (char*)row_vals[pres_uri_col].val.string_val;
		s.pres_uri.len= strlen(s.pres_uri.s);

		s.to_user.s=(char*)row_vals[to_user_col].val.string_val;
		s.to_user.len= strlen(s.to_user.s);

		s.to_domain.s=(char*)row_vals[to_domain_col].val.string_val;
		s.to_domain.len= strlen(s.to_domain.s);

		s.from_user.s=(char*)row_vals[from_user_col].val.string_val;
		s.from_user.len= strlen(s.from_user.s);

		s.from_domain.s=(char*)row_vals[from_domain_col].val.string_val;
		s.from_domain.len= strlen(s.from_domain.s);

		s.to_tag.s=(char*)row_vals[totag_col].val.string_val;
		s.to_tag.len= strlen(s.to_tag.s);

		s.from_tag.s=(char*)row_vals[fromtag_col].val.string_val;
		s.from_tag.len= strlen(s.from_tag.s);

		s.callid.s=(char*)row_vals[callid_col].val.string_val;
		s.callid.len= strlen(s.callid.s);

		ev_sname.s= (char*)row_vals[event_col].val.string_val;
		ev_sname.len= strlen(ev_sname.s);

		event= pres_contains_event(&ev_sname, &parsed_event);
		if(event== NULL)
		{
			LM_ERR("event not found in list\n");
			goto error;
		}
		s.event= event;

		s.event_id.s=(char*)row_vals[event_id_col].val.string_val;
		if(s.event_id.s)
			s.event_id.len= strlen(s.event_id.s);

		s.remote_cseq= row_vals[remote_cseq_col].val.int_val;
		s.local_cseq= row_vals[local_cseq_col].val.int_val;
		s.version= row_vals[version_col].val.int_val;

		s.expires= expires- (int)time(NULL);
		s.status= row_vals[status_col].val.int_val;

		s.reason.s= (char*)row_vals[reason_col].val.string_val;
		if(s.reason.s)
			s.reason.len= strlen(s.reason.s);

		s.contact.s=(char*)row_vals[contact_col].val.string_val;
		s.contact.len= strlen(s.contact.s);

		s.local_contact.s=(char*)row_vals[local_contact_col].val.string_val;
		s.local_contact.len= strlen(s.local_contact.s);

		s.record_route.s=(char*)row_vals[record_route_col].val.string_val;
		if(s.record_route.s)
			s.record_route.len= strlen(s.record_route.s);

		sockinfo_str.s = (char*)row_vals[sockinfo_col].val.string_val;
		if (sockinfo_str.s)
		{
			sockinfo_str.len = strlen(sockinfo_str.s);
			if (parse_phostport (sockinfo_str.s, sockinfo_str.len, &host.s,
					&host.len, &port, &proto )< 0)
			{
				LM_ERR("bad format for stored sockinfo string\n");
				goto error;
			}
			s.sockinfo = grep_sock_info(&host, (unsigned short) port,
					(unsigned short) proto);
		}

		hash_code= core_hash(&s.pres_uri, &s.event->name, hash_size);
		if(pres_insert_shtable(rls_table, hash_code, &s)< 0)
		{
			LM_ERR("adding new record in hash table\n");
			goto error;
		}
	}

	rls_dbf.free_result(rls_db, res);

	/* delete all records */
	if(rls_dbf.delete(rls_db, 0,0,0,0)< 0)
	{
		LM_ERR("deleting all records from database table\n");
		return -1;
	}

	return 0;

error:
	if(res)
		rls_dbf.free_result(rls_db, res);
	return -1;

}

int add_rls_event(modparam_t type, void* val)
{
	char* event= (char*)val;
	event_t e;

	if(event_parser(event, strlen(event), &e)< 0)
	{
		LM_ERR("while parsing event = %s\n", event);
		return -1;
	}
	if(e.parsed & EVENT_OTHER)
	{
		LM_ERR("wrong event= %s\n", event);
		return -1;
	}

	rls_events|= e.parsed;

	return 0;

}


static void update_subs(subs_t *subs)
{
	xmlDocPtr doc = NULL;
	xmlNodePtr service_node = NULL;

	if ((subs->expires -= (int)time(NULL)) <= 0)
	{
		LM_WARN("found expired subscription for: %.*s\n",
				subs->pres_uri.len, subs->pres_uri.s);
		goto done;
	}

	if(get_resource_list(&subs->pres_uri, subs->from_user,
						 subs->from_domain, &service_node, &doc) < 0)
	{
		LM_ERR("failed getting resource list for: %.*s\n",
			   subs->pres_uri.len, subs->pres_uri.s);
		goto done;
	}
	if(doc==NULL)
	{
		LM_WARN("no document returned for: %.*s\n",
				subs->pres_uri.len, subs->pres_uri.s);
		goto done;
	}

	subs->internal_update_flag = 1;

	if(resource_subscriptions(subs, service_node) < 0)
	{
		LM_ERR("failed sending subscribe requests to resources in list\n");
		goto done;
	}

done:
	if (doc != NULL)
		xmlFreeDoc(doc);
}

mi_response_t *mi_update_subscriptions(const mi_params_t *params,
								struct mi_handler *async_hdl)
{
	struct sip_uri parsed_uri;
	str uri;
	int i;
	subs_t *subs, *subs_copy;

	if (get_mi_string_param(params, "presentity_uri", &uri.s, &uri.len) < 0)
		return init_mi_param_error();

	if(uri.s == NULL || uri.len== 0)
	{
		LM_ERR( "empty uri\n");
		return init_mi_error(404, MI_SSTR("Empty presentity URI"));
	}

	if (parse_uri(uri.s, uri.len, &parsed_uri) < 0)
	{
		LM_ERR("bad uri: %.*s\n", uri.len, uri.s);
		return 0;
	}

	LM_DBG("watcher username: %.*s, watcher domain: %.*s\n",
		parsed_uri.user.len, parsed_uri.user.s,
		parsed_uri.host.len, parsed_uri.host.s);

	if (rls_table == NULL)
	{
		LM_ERR("rls_table is NULL\n");
		return 0;
	}

	/* Search through the entire subscription table for matches... */
	for (i = 0; i < hash_size; i++)
	{
		lock_get(&rls_table[i].lock);

		subs = rls_table[i].entries->next;

		while (subs != NULL)
		{
			if (subs->from_user.len == parsed_uri.user.len &&
				strncmp(subs->from_user.s, parsed_uri.user.s, parsed_uri.user.len) == 0 &&
				subs->from_domain.len == parsed_uri.host.len &&
				strncmp(subs->from_domain.s, parsed_uri.host.s, parsed_uri.host.len) == 0)
			{
				subs_copy = NULL;

				LM_DBG("found matching RLS subscription for: %.*s\n",
					subs->pres_uri.len, subs->pres_uri.s);

				if ((subs_copy = pres_copy_subs(subs, PKG_MEM_TYPE)) == NULL)
				{
					LM_ERR("subs_t copy failed\n");
					lock_release(&rls_table[i].lock);
					return 0;
				}

				update_subs(subs_copy);
				pkg_free(subs_copy);
			}
			subs = subs->next;
		}
		lock_release(&rls_table[i].lock);
	}

	return init_mi_result_ok();
}


