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asterisk/cdr/cdr_pgsql.c
Mark Spencer 6a6814379f Release pgsql on failure (bug #891) 
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2055 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2004-01-22 17:03:11 +00:00

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