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	git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@4440 65c4cc65-6c06-0410-ace0-fbb531ad65f3
		
			
				
	
	
		
			374 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			C
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			374 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			C
		
	
	
		
			Executable File
		
	
	
	
	
/*
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 * Asterisk -- A telephony toolkit for Linux.
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 *
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 * PostgreSQL CDR logger 
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 *
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 * Matthew D. Hardeman <mhardemn@papersoft.com> 
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 * Adapted from the MySQL CDR logger originally by James Sharp 
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 *
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 * Modified September 2003
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 * Matthew D. Hardeman <mhardemn@papersoft.com>
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 *
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 * This program is free software, distributed under the terms of
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 * the GNU General Public License.
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 *
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 */
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#include <sys/types.h>
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#include <asterisk/config.h>
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#include <asterisk/options.h>
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#include <asterisk/channel.h>
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#include <asterisk/cdr.h>
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#include <asterisk/module.h>
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#include <asterisk/logger.h>
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#include "../asterisk.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <time.h>
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#include <libpq-fe.h>
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#define DATE_FORMAT "%Y-%m-%d %T"
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static char *desc = "PostgreSQL CDR Backend";
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static char *name = "pgsql";
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static char *config = "cdr_pgsql.conf";
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static char *pghostname = NULL, *pgdbname = NULL, *pgdbuser = NULL, *pgpassword = NULL, *pgdbsock = NULL, *pgdbport = NULL, *table = NULL;
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static int hostname_alloc = 0, dbname_alloc = 0, dbuser_alloc = 0, password_alloc = 0, dbsock_alloc = 0, dbport_alloc = 0, table_alloc = 0;
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static int connected = 0;
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AST_MUTEX_DEFINE_STATIC(pgsql_lock);
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PGconn		*conn;
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PGresult	*result;
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static int pgsql_log(struct ast_cdr *cdr)
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{
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	struct tm tm;
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	char sqlcmd[2048] = "", timestr[128];
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	char *pgerror;
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	ast_mutex_lock(&pgsql_lock);
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	localtime_r(&cdr->start.tv_sec,&tm);
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	strftime(timestr, sizeof(timestr), DATE_FORMAT, &tm);
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	if ((!connected) && pghostname && pgdbuser && pgpassword && pgdbname) {
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		conn = PQsetdbLogin(pghostname, pgdbport, NULL, NULL, pgdbname, pgdbuser, pgpassword);
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		if (PQstatus(conn) != CONNECTION_BAD) {
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			connected = 1;
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		} else {
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			pgerror = PQerrorMessage(conn);
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			ast_log(LOG_ERROR, "cdr_pgsql: Unable to connect to database server %s.  Calls will not be logged!\n", pghostname);
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                        ast_log(LOG_ERROR, "cdr_pgsql: Reason: %s\n", pgerror);
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		}
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	}
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	if (connected) {
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		char *clid=NULL, *dcontext=NULL, *channel=NULL, *dstchannel=NULL, *lastapp=NULL, *lastdata=NULL;
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		char *uniqueid=NULL, *userfield=NULL;
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		/* Maximum space needed would be if all characters needed to be escaped, plus a trailing NULL */
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		if ((clid = alloca(strlen(cdr->clid) * 2 + 1)) != NULL)
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			PQescapeString(clid, cdr->clid, strlen(cdr->clid));
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		if ((dcontext = alloca(strlen(cdr->dcontext) * 2 + 1)) != NULL)
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			PQescapeString(dcontext, cdr->dcontext, strlen(cdr->dcontext));
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		if ((channel = alloca(strlen(cdr->channel) * 2 + 1)) != NULL)
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			PQescapeString(channel, cdr->channel, strlen(cdr->channel));
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		if ((dstchannel = alloca(strlen(cdr->dstchannel) * 2 + 1)) != NULL)
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			PQescapeString(dstchannel, cdr->dstchannel, strlen(cdr->dstchannel));
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		if ((lastapp = alloca(strlen(cdr->lastapp) * 2 + 1)) != NULL)
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			PQescapeString(lastapp, cdr->lastapp, strlen(cdr->lastapp));
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		if ((lastdata = alloca(strlen(cdr->lastdata) * 2 + 1)) != NULL)
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			PQescapeString(lastdata, cdr->lastdata, strlen(cdr->lastdata));
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		if ((uniqueid = alloca(strlen(cdr->uniqueid) * 2 + 1)) != NULL)
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			PQescapeString(uniqueid, cdr->uniqueid, strlen(cdr->uniqueid));
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		if ((userfield = alloca(strlen(cdr->userfield) * 2 + 1)) != NULL)
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			PQescapeString(userfield, cdr->userfield, strlen(cdr->userfield));
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		/* Check for all alloca failures above at once */
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		if ((!clid) || (!dcontext) || (!channel) || (!dstchannel) || (!lastapp) || (!lastdata) || (!uniqueid) || (!userfield)) {
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			ast_log(LOG_ERROR, "cdr_pgsql:  Out of memory error (insert fails)\n");
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			ast_mutex_unlock(&pgsql_lock);
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			return -1;
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		}
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		ast_log(LOG_DEBUG,"cdr_pgsql: inserting a CDR record.\n");
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		snprintf(sqlcmd,sizeof(sqlcmd),"INSERT INTO %s (calldate,clid,src,dst,dcontext,channel,dstchannel,"
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				 "lastapp,lastdata,duration,billsec,disposition,amaflags,accountcode,uniqueid,userfield) VALUES"
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				 " ('%s','%s','%s','%s','%s', '%s','%s','%s','%s',%i,%i,'%s',%i,'%s','%s','%s')",
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				 table,timestr,clid,cdr->src, cdr->dst, dcontext,channel, dstchannel, lastapp, lastdata,
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				 cdr->duration,cdr->billsec,ast_cdr_disp2str(cdr->disposition),cdr->amaflags, cdr->accountcode, uniqueid, userfield);
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		ast_log(LOG_DEBUG,"cdr_pgsql: SQL command executed:  %s\n",sqlcmd);
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		/* Test to be sure we're still connected... */
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		/* If we're connected, and connection is working, good. */
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		/* Otherwise, attempt reconnect.  If it fails... sorry... */
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		if (PQstatus(conn) == CONNECTION_OK) {
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			connected = 1;
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		} else {
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			ast_log(LOG_ERROR, "cdr_pgsql: Connection was lost... attempting to reconnect.\n");
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			PQreset(conn);
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			if (PQstatus(conn) == CONNECTION_OK) {
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				ast_log(LOG_ERROR, "cdr_pgsql: Connection reestablished.\n");
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				connected = 1;
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			} else {
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				pgerror = PQerrorMessage(conn);
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				ast_log(LOG_ERROR, "cdr_pgsql: Unable to reconnect to database server %s. Calls will not be logged!\n", pghostname);
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				ast_log(LOG_ERROR, "cdr_pgsql: Reason: %s\n", pgerror);
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				connected = 0;
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				ast_mutex_unlock(&pgsql_lock);
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				return -1;
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			}
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		}
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		result = PQexec(conn, sqlcmd);
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		if ( PQresultStatus(result) != PGRES_COMMAND_OK) {
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                        pgerror = PQresultErrorMessage(result);
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			ast_log(LOG_ERROR,"cdr_pgsql: Failed to insert call detail record into database!\n");
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                        ast_log(LOG_ERROR,"cdr_pgsql: Reason: %s\n", pgerror);
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			ast_mutex_unlock(&pgsql_lock);
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			return -1;
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		}
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	}
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	ast_mutex_unlock(&pgsql_lock);
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	return 0;
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}
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char *description(void)
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{
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	return desc;
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}
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static int my_unload_module(void)
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{ 
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	if (conn)
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		PQfinish(conn);
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	conn = NULL;
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	connected = 0;
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	if (pghostname && hostname_alloc) {
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		free(pghostname);
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		pghostname = NULL;
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		hostname_alloc = 0;
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	}
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	if (pgdbname && dbname_alloc) {
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		free(pgdbname);
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		pgdbname = NULL;
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		dbname_alloc = 0;
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	}
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	if (pgdbuser && dbuser_alloc) {
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		free(pgdbuser);
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		pgdbuser = NULL;
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		dbuser_alloc = 0;
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	}
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	if (pgdbsock && dbsock_alloc) {
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		free(pgdbsock);
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		pgdbsock = NULL;
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		dbsock_alloc = 0;
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	}
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	if (pgpassword && password_alloc) {
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		free(pgpassword);
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		pgpassword = NULL;
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		password_alloc = 0;
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	}
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	if (pgdbport && dbport_alloc) {
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		free(pgdbport);
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		pgdbport = NULL;
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		dbport_alloc = 0;
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	}
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	if (table && table_alloc) {
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		free(table);
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		table = NULL;
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		table_alloc = 0;
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	}
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	ast_cdr_unregister(name);
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	return 0;
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}
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static int process_my_load_module(struct ast_config *cfg)
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{
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	int res;
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	struct ast_variable *var;
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        char *pgerror;
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	char *tmp;
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	var = ast_variable_browse(cfg, "global");
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	if (!var) {
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		/* nothing configured */
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		return 0;
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	}
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	tmp = ast_variable_retrieve(cfg,"global","hostname");
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	if (tmp) {
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		pghostname = malloc(strlen(tmp) + 1);
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		if (pghostname != NULL) {
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			memset(pghostname, 0, strlen(tmp) + 1);
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			hostname_alloc = 1;
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			strncpy(pghostname, tmp, strlen(tmp));
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		} else {
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			ast_log(LOG_ERROR,"Out of memory error.\n");
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			return -1;
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		}
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	} else {
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		ast_log(LOG_WARNING,"PostgreSQL server hostname not specified.  Assuming localhost\n");
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		pghostname = "localhost";
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	}
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	tmp = ast_variable_retrieve(cfg,"global","dbname");
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	if (tmp) {
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		pgdbname = malloc(strlen(tmp) + 1);
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		if (pgdbname != NULL) {
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			memset(pgdbname, 0, strlen(tmp) + 1);
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			dbname_alloc = 1;
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			strncpy(pgdbname, tmp, strlen(tmp));
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		} else {
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			ast_log(LOG_ERROR,"Out of memory error.\n");
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			return -1;
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		}
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	} else {
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		ast_log(LOG_WARNING,"PostgreSQL database not specified.  Assuming asterisk\n");
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		pgdbname = "asteriskcdrdb";
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	}
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	tmp = ast_variable_retrieve(cfg,"global","user");
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	if (tmp) {
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		pgdbuser = malloc(strlen(tmp) + 1);
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		if (pgdbuser != NULL) {
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			memset(pgdbuser, 0, strlen(tmp) + 1);
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			dbuser_alloc = 1;
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			strncpy(pgdbuser, tmp, strlen(tmp));
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		} else {
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			ast_log(LOG_ERROR,"Out of memory error.\n");
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			return -1;
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		}
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	} else {
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		ast_log(LOG_WARNING,"PostgreSQL database user not specified.  Assuming root\n");
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		pgdbuser = "root";
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	}
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	tmp = ast_variable_retrieve(cfg,"global","password");
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	if (tmp) {
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		pgpassword = malloc(strlen(tmp) + 1);
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		if (pgpassword != NULL) {
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			memset(pgpassword, 0, strlen(tmp) + 1);
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			password_alloc = 1;
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			strncpy(pgpassword, tmp, strlen(tmp));
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		} else {
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			ast_log(LOG_ERROR,"Out of memory error.\n");
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			return -1;
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		}
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	} else {
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		ast_log(LOG_WARNING,"PostgreSQL database password not specified.  Assuming blank\n");
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		pgpassword = "";
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	}
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	tmp = ast_variable_retrieve(cfg,"global","port");
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	if (tmp) {
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		pgdbport = malloc(strlen(tmp) + 1);
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		if (pgdbport != NULL) {
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			memset(pgdbport, 0, strlen(tmp) + 1);
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			dbport_alloc = 1;
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			strncpy(pgdbport, tmp, strlen(tmp));
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		} else {
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			ast_log(LOG_ERROR,"Out of memory error.\n");
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			return -1;
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		}
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	} else {
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		ast_log(LOG_WARNING,"PostgreSQL database port not specified.  Using default 5432.\n");
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		pgdbport = "5432";
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	}
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        /* Loading stuff for table name */
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	tmp = ast_variable_retrieve(cfg,"global","table");
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	if (tmp) {
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		table = malloc(strlen(tmp) + 1);
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		if (table != NULL) {
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			memset(table, 0, strlen(tmp) + 1);
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			table_alloc = 1;
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			strncpy(table, tmp, strlen(tmp));
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		} else {
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			ast_log(LOG_ERROR,"Out of memory error.\n");
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			return -1;
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		}
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	} else {
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		ast_log(LOG_WARNING,"CDR table not specified.  Assuming cdr\n");
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		table = "cdr";
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	}
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	ast_log(LOG_DEBUG,"cdr_pgsql: got hostname of %s\n",pghostname);
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	ast_log(LOG_DEBUG,"cdr_pgsql: got port of %s\n",pgdbport);
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	if (pgdbsock)
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		ast_log(LOG_DEBUG,"cdr_pgsql: got sock file of %s\n",pgdbsock);
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	ast_log(LOG_DEBUG,"cdr_pgsql: got user of %s\n",pgdbuser);
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	ast_log(LOG_DEBUG,"cdr_pgsql: got dbname of %s\n",pgdbname);
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	ast_log(LOG_DEBUG,"cdr_pgsql: got password of %s\n",pgpassword);
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	ast_log(LOG_DEBUG,"cdr_pgsql: got sql table name of %s\n",table);
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	conn = PQsetdbLogin(pghostname, pgdbport, NULL, NULL, pgdbname, pgdbuser, pgpassword);
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	if (PQstatus(conn) != CONNECTION_BAD) {
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		ast_log(LOG_DEBUG,"Successfully connected to PostgreSQL database.\n");
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		connected = 1;
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	} else {
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                pgerror = PQerrorMessage(conn);
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		ast_log(LOG_ERROR, "cdr_pgsql: Unable to connect to database server %s.  Calls will not be logged!\n", pghostname);
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                ast_log(LOG_ERROR, "cdr_pgsql: Reason: %s\n", pgerror);
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		connected = 0;
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	}
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	res = ast_cdr_register(name, desc, pgsql_log);
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	if (res) {
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		ast_log(LOG_ERROR, "Unable to register PGSQL CDR handling\n");
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	}
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	return res;
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}
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static int my_load_module(void)
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{
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	struct ast_config *cfg;
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	int res;
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	cfg = ast_load(config);
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	if (!cfg) {
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		ast_log(LOG_WARNING, "Unable to load config for PostgreSQL CDR's: %s\n", config);
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		return 0;
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	}
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	res = process_my_load_module(cfg);
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	ast_destroy(cfg);
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	return res;
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}
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int load_module(void)
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{
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	return my_load_module();
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}
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int unload_module(void)
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{
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	return my_unload_module();
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}
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int reload(void)
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{
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	my_unload_module();
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	return my_load_module();
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}
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int usecount(void)
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{
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	/* To be able to unload the module */
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	if ( ast_mutex_trylock(&pgsql_lock) ) {
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		return 1;
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	} else {
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		ast_mutex_unlock(&pgsql_lock);
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		return 0;
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	}
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}
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char *key()
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{
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	return ASTERISK_GPL_KEY;
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}
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