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Diffstat (limited to 'trunk/cdr/cdr_pgsql.c')
-rw-r--r-- | trunk/cdr/cdr_pgsql.c | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/trunk/cdr/cdr_pgsql.c b/trunk/cdr/cdr_pgsql.c new file mode 100644 index 000000000..eea4416a5 --- /dev/null +++ b/trunk/cdr/cdr_pgsql.c @@ -0,0 +1,335 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 2003 - 2006 + * + * 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> + * + * See http://www.asterisk.org for more information about + * the Asterisk project. Please do not directly contact + * any of the maintainers of this project for assistance; + * the project provides a web site, mailing lists and IRC + * channels for your use. + * + * This program is free software, distributed under the terms of + * the GNU General Public License Version 2. See the LICENSE file + * at the top of the source tree. + */ + +/*! \file + * + * \brief PostgreSQL CDR logger + * + * \author Matthew D. Hardeman <mhardemn@papersoft.com> + * \extref PostgreSQL http://www.postgresql.org/ + * + * See also + * \arg \ref Config_cdr + * \arg http://www.postgresql.org/ + * \ingroup cdr_drivers + */ + +/*** MODULEINFO + <depend>pgsql</depend> + ***/ + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include <time.h> + +#include <libpq-fe.h> + +#include "asterisk/config.h" +#include "asterisk/channel.h" +#include "asterisk/cdr.h" +#include "asterisk/module.h" + +#define DATE_FORMAT "%Y-%m-%d %T" + +static char *name = "pgsql"; +static char *config = "cdr_pgsql.conf"; +static char *pghostname = NULL, *pgdbname = NULL, *pgdbuser = NULL, *pgpassword = NULL, *pgdbport = NULL, *table = NULL; +static int connected = 0; + +AST_MUTEX_DEFINE_STATIC(pgsql_lock); + +static PGconn *conn = NULL; + +static int pgsql_log(struct ast_cdr *cdr) +{ + struct ast_tm tm; + char sqlcmd[2048] = "", timestr[128]; + char *pgerror; + PGresult *result; + + ast_mutex_lock(&pgsql_lock); + + ast_localtime(&cdr->start, &tm, NULL); + ast_strftime(timestr, sizeof(timestr), 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); + PQfinish(conn); + conn = NULL; + } + } + + if (connected) { + char *clid=NULL, *dcontext=NULL, *channel=NULL, *dstchannel=NULL, *lastapp=NULL, *lastdata=NULL; + char *src=NULL, *dst=NULL, *uniqueid=NULL, *userfield=NULL; + int pgerr; + + /* 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) + PQescapeStringConn(conn, clid, cdr->clid, strlen(cdr->clid), &pgerr); + if ((dcontext = alloca(strlen(cdr->dcontext) * 2 + 1)) != NULL) + PQescapeStringConn(conn, dcontext, cdr->dcontext, strlen(cdr->dcontext), &pgerr); + if ((channel = alloca(strlen(cdr->channel) * 2 + 1)) != NULL) + PQescapeStringConn(conn, channel, cdr->channel, strlen(cdr->channel), &pgerr); + if ((dstchannel = alloca(strlen(cdr->dstchannel) * 2 + 1)) != NULL) + PQescapeStringConn(conn, dstchannel, cdr->dstchannel, strlen(cdr->dstchannel), &pgerr); + if ((lastapp = alloca(strlen(cdr->lastapp) * 2 + 1)) != NULL) + PQescapeStringConn(conn, lastapp, cdr->lastapp, strlen(cdr->lastapp), &pgerr); + if ((lastdata = alloca(strlen(cdr->lastdata) * 2 + 1)) != NULL) + PQescapeStringConn(conn, lastdata, cdr->lastdata, strlen(cdr->lastdata), &pgerr); + if ((uniqueid = alloca(strlen(cdr->uniqueid) * 2 + 1)) != NULL) + PQescapeStringConn(conn, uniqueid, cdr->uniqueid, strlen(cdr->uniqueid), &pgerr); + if ((userfield = alloca(strlen(cdr->userfield) * 2 + 1)) != NULL) + PQescapeStringConn(conn, userfield, cdr->userfield, strlen(cdr->userfield), &pgerr); + if ((src = alloca(strlen(cdr->src) * 2 + 1)) != NULL) + PQescapeStringConn(conn, src, cdr->src, strlen(cdr->src), &pgerr); + if ((dst = alloca(strlen(cdr->dst) * 2 + 1)) != NULL) + PQescapeStringConn(conn, dst, cdr->dst, strlen(cdr->dst), &pgerr); + + /* Check for all alloca failures above at once */ + if ((!clid) || (!dcontext) || (!channel) || (!dstchannel) || (!lastapp) || (!lastdata) || (!uniqueid) || (!userfield) || (!src) || (!dst)) { + ast_log(LOG_ERROR, "cdr_pgsql: Out of memory error (insert fails)\n"); + ast_mutex_unlock(&pgsql_lock); + return -1; + } + + ast_debug(2, "cdr_pgsql: inserting a CDR record.\n"); + + snprintf(sqlcmd,sizeof(sqlcmd),"INSERT INTO %s (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',%ld,%ld,'%s',%ld,'%s','%s','%s')", + table, timestr, clid, src, dst, dcontext, channel, dstchannel, lastapp, lastdata, + cdr->duration,cdr->billsec,ast_cdr_disp2str(cdr->disposition),cdr->amaflags, cdr->accountcode, uniqueid, userfield); + + ast_debug(3, "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); + PQfinish(conn); + conn = NULL; + 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_log(LOG_ERROR,"cdr_pgsql: Connection may have been lost... attempting to reconnect.\n"); + PQreset(conn); + if (PQstatus(conn) == CONNECTION_OK) { + ast_log(LOG_ERROR, "cdr_pgsql: Connection reestablished.\n"); + connected = 1; + PQclear(result); + result = PQexec(conn, sqlcmd); + if (PQresultStatus(result) != PGRES_COMMAND_OK) { + pgerror = PQresultErrorMessage(result); + ast_log(LOG_ERROR,"cdr_pgsql: HARD ERROR! Attempted reconnection failed. DROPPING CALL RECORD!\n"); + ast_log(LOG_ERROR,"cdr_pgsql: Reason: %s\n", pgerror); + } + } + ast_mutex_unlock(&pgsql_lock); + PQclear(result); + return -1; + } + PQclear(result); + } + ast_mutex_unlock(&pgsql_lock); + return 0; +} + +static int unload_module(void) +{ + PQfinish(conn); + if (pghostname) + ast_free(pghostname); + if (pgdbname) + ast_free(pgdbname); + if (pgdbuser) + ast_free(pgdbuser); + if (pgpassword) + ast_free(pgpassword); + if (pgdbport) + ast_free(pgdbport); + if (table) + ast_free(table); + ast_cdr_unregister(name); + return 0; +} + +static int config_module(int reload) +{ + struct ast_variable *var; + char *pgerror; + const char *tmp; + struct ast_config *cfg; + struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 }; + + if ((cfg = ast_config_load(config, config_flags)) == NULL) { + ast_log(LOG_WARNING, "Unable to load config for PostgreSQL CDR's: %s\n", config); + return -1; + } else if (cfg == CONFIG_STATUS_FILEUNCHANGED) + return 0; + + if (!(var = ast_variable_browse(cfg, "global"))) { + ast_config_destroy(cfg); + return 0; + } + + if (!(tmp = ast_variable_retrieve(cfg, "global", "hostname"))) { + ast_log(LOG_WARNING, "PostgreSQL server hostname not specified. Assuming unix socket connection\n"); + tmp = ""; /* connect via UNIX-socket by default */ + } + + if (pghostname) + ast_free(pghostname); + if (!(pghostname = ast_strdup(tmp))) { + ast_config_destroy(cfg); + return -1; + } + + if (!(tmp = ast_variable_retrieve(cfg, "global", "dbname"))) { + ast_log(LOG_WARNING,"PostgreSQL database not specified. Assuming asterisk\n"); + tmp = "asteriskcdrdb"; + } + + if (pgdbname) + ast_free(pgdbname); + if (!(pgdbname = ast_strdup(tmp))) { + ast_config_destroy(cfg); + return -1; + } + + if (!(tmp = ast_variable_retrieve(cfg, "global", "user"))) { + ast_log(LOG_WARNING,"PostgreSQL database user not specified. Assuming asterisk\n"); + tmp = "asterisk"; + } + + if (pgdbuser) + ast_free(pgdbuser); + if (!(pgdbuser = ast_strdup(tmp))) { + ast_config_destroy(cfg); + return -1; + } + + if (!(tmp = ast_variable_retrieve(cfg, "global", "password"))) { + ast_log(LOG_WARNING,"PostgreSQL database password not specified. Assuming blank\n"); + tmp = ""; + } + + if (pgpassword) + ast_free(pgpassword); + if (!(pgpassword = ast_strdup(tmp))) { + ast_config_destroy(cfg); + return -1; + } + + if (!(tmp = ast_variable_retrieve(cfg,"global","port"))) { + ast_log(LOG_WARNING,"PostgreSQL database port not specified. Using default 5432.\n"); + tmp = "5432"; + } + + if (pgdbport) + ast_free(pgdbport); + if (!(pgdbport = ast_strdup(tmp))) { + ast_config_destroy(cfg); + return -1; + } + + if (!(tmp = ast_variable_retrieve(cfg, "global", "table"))) { + ast_log(LOG_WARNING,"CDR table not specified. Assuming cdr\n"); + tmp = "cdr"; + } + + if (table) + ast_free(table); + if (!(table = ast_strdup(tmp))) { + ast_config_destroy(cfg); + return -1; + } + + if (option_debug) { + if (ast_strlen_zero(pghostname)) + ast_debug(1, "cdr_pgsql: using default unix socket\n"); + else + ast_debug(1, "cdr_pgsql: got hostname of %s\n", pghostname); + ast_debug(1, "cdr_pgsql: got port of %s\n", pgdbport); + ast_debug(1, "cdr_pgsql: got user of %s\n", pgdbuser); + ast_debug(1, "cdr_pgsql: got dbname of %s\n", pgdbname); + ast_debug(1, "cdr_pgsql: got password of %s\n", pgpassword); + ast_debug(1, "cdr_pgsql: got sql table name of %s\n", table); + } + + conn = PQsetdbLogin(pghostname, pgdbport, NULL, NULL, pgdbname, pgdbuser, pgpassword); + if (PQstatus(conn) != CONNECTION_BAD) { + ast_debug(1, "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; + } + + ast_config_destroy(cfg); + + return ast_cdr_register(name, ast_module_info->description, pgsql_log); +} + +static int load_module(void) +{ + return config_module(0) ? AST_MODULE_LOAD_DECLINE : 0; +} + +static int reload(void) +{ + return config_module(1); +} + +AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "PostgreSQL CDR Backend", + .load = load_module, + .unload = unload_module, + .reload = reload, + ); |