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asterisk/cdr/cdr_odbc.c
Tilghman Lesher 56b9568164 Don't reload a configuration file if nothing has changed. 
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@79747 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2007-08-16 21:09:46 +00:00

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2003-2005, Digium, Inc.
*
* Brian K. West <brian@bkw.org>
*
* 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 ODBC CDR Backend
*
* \author Brian K. West <brian@bkw.org>
*
* See also:
* \arg http://www.unixodbc.org
* \arg \ref Config_cdr
* \ingroup cdr_drivers
*/
/*** MODULEINFO
<depend>unixodbc</depend>
<depend>ltdl</depend>
***/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#ifndef __CYGWIN__
#include <sql.h>
#include <sqlext.h>
#include <sqltypes.h>
#else
#include <windows.h>
#include <w32api/sql.h>
#include <w32api/sqlext.h>
#include <w32api/sqltypes.h>
#endif
#include "asterisk/config.h"
#include "asterisk/options.h"
#include "asterisk/channel.h"
#include "asterisk/cdr.h"
#include "asterisk/module.h"
#include "asterisk/logger.h"
#define DATE_FORMAT "%Y-%m-%d %T"
static char *name = "ODBC";
static char *config = "cdr_odbc.conf";
static char *dsn = NULL, *username = NULL, *password = NULL, *table = NULL;
static int loguniqueid = 0;
static int usegmtime = 0;
static int dispositionstring = 0;
static int connected = 0;
AST_MUTEX_DEFINE_STATIC(odbc_lock);
static int odbc_do_query(void);
static int odbc_init(void);
static SQLHENV ODBC_env = SQL_NULL_HANDLE; /* global ODBC Environment */
static SQLHDBC ODBC_con; /* global ODBC Connection Handle */
static SQLHSTMT ODBC_stmt; /* global ODBC Statement Handle */
static void odbc_disconnect(void)
{
SQLDisconnect(ODBC_con);
SQLFreeHandle(SQL_HANDLE_DBC, ODBC_con);
SQLFreeHandle(SQL_HANDLE_ENV, ODBC_env);
connected = 0;
}
static int odbc_log(struct ast_cdr *cdr)
{
int ODBC_res;
char sqlcmd[2048] = "", timestr[128];
int res = 0;
struct ast_tm tm;
ast_localtime(&cdr->start, &tm, usegmtime ? "GMT" : NULL);
ast_mutex_lock(&odbc_lock);
ast_strftime(timestr, sizeof(timestr), DATE_FORMAT, &tm);
memset(sqlcmd,0,2048);
if (loguniqueid) {
snprintf(sqlcmd,sizeof(sqlcmd),"INSERT INTO %s "
"(calldate,clid,src,dst,dcontext,channel,dstchannel,lastapp,"
"lastdata,duration,billsec,disposition,amaflags,accountcode,uniqueid,userfield) "
"VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)", table);
} else {
snprintf(sqlcmd,sizeof(sqlcmd),"INSERT INTO %s "
"(calldate,clid,src,dst,dcontext,channel,dstchannel,lastapp,lastdata,"
"duration,billsec,disposition,amaflags,accountcode) "
"VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?)", table);
}
if (!connected) {
res = odbc_init();
if (res < 0) {
odbc_disconnect();
ast_mutex_unlock(&odbc_lock);
return 0;
}
}
ODBC_res = SQLAllocHandle(SQL_HANDLE_STMT, ODBC_con, &ODBC_stmt);
if ((ODBC_res != SQL_SUCCESS) && (ODBC_res != SQL_SUCCESS_WITH_INFO)) {
ast_verb(11, "cdr_odbc: Failure in AllocStatement %d\n", ODBC_res);
SQLFreeHandle(SQL_HANDLE_STMT, ODBC_stmt);
odbc_disconnect();
ast_mutex_unlock(&odbc_lock);
return 0;
}
/* We really should only have to do this once. But for some
strange reason if I don't it blows holes in memory like
like a shotgun. So we just do this so its safe. */
ODBC_res = SQLPrepare(ODBC_stmt, (unsigned char *)sqlcmd, SQL_NTS);
if ((ODBC_res != SQL_SUCCESS) && (ODBC_res != SQL_SUCCESS_WITH_INFO)) {
ast_verb(11, "cdr_odbc: Error in PREPARE %d\n", ODBC_res);
SQLFreeHandle(SQL_HANDLE_STMT, ODBC_stmt);
odbc_disconnect();
ast_mutex_unlock(&odbc_lock);
return 0;
}
SQLBindParameter(ODBC_stmt, 1, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(timestr), 0, &timestr, 0, NULL);
SQLBindParameter(ODBC_stmt, 2, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(cdr->clid), 0, cdr->clid, 0, NULL);
SQLBindParameter(ODBC_stmt, 3, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(cdr->src), 0, cdr->src, 0, NULL);
SQLBindParameter(ODBC_stmt, 4, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(cdr->dst), 0, cdr->dst, 0, NULL);
SQLBindParameter(ODBC_stmt, 5, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(cdr->dcontext), 0, cdr->dcontext, 0, NULL);
SQLBindParameter(ODBC_stmt, 6, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(cdr->channel), 0, cdr->channel, 0, NULL);
SQLBindParameter(ODBC_stmt, 7, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(cdr->dstchannel), 0, cdr->dstchannel, 0, NULL);
SQLBindParameter(ODBC_stmt, 8, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(cdr->lastapp), 0, cdr->lastapp, 0, NULL);
SQLBindParameter(ODBC_stmt, 9, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(cdr->lastdata), 0, cdr->lastdata, 0, NULL);
SQLBindParameter(ODBC_stmt, 10, SQL_PARAM_INPUT, SQL_C_SLONG, SQL_INTEGER, 0, 0, &cdr->duration, 0, NULL);
SQLBindParameter(ODBC_stmt, 11, SQL_PARAM_INPUT, SQL_C_SLONG, SQL_INTEGER, 0, 0, &cdr->billsec, 0, NULL);
if (dispositionstring)
SQLBindParameter(ODBC_stmt, 12, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(ast_cdr_disp2str(cdr->disposition)) + 1, 0, ast_cdr_disp2str(cdr->disposition), 0, NULL);
else
SQLBindParameter(ODBC_stmt, 12, SQL_PARAM_INPUT, SQL_C_SLONG, SQL_INTEGER, 0, 0, &cdr->disposition, 0, NULL);
SQLBindParameter(ODBC_stmt, 13, SQL_PARAM_INPUT, SQL_C_SLONG, SQL_INTEGER, 0, 0, &cdr->amaflags, 0, NULL);
SQLBindParameter(ODBC_stmt, 14, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(cdr->accountcode), 0, cdr->accountcode, 0, NULL);
if (loguniqueid) {
SQLBindParameter(ODBC_stmt, 15, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(cdr->uniqueid), 0, cdr->uniqueid, 0, NULL);
SQLBindParameter(ODBC_stmt, 16, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, sizeof(cdr->userfield), 0, cdr->userfield, 0, NULL);
}
if (connected) {
res = odbc_do_query();
if (res < 0) {
ast_verb(11, "cdr_odbc: Query FAILED Call not logged!\n");
ast_verb(11, "cdr_odbc: Reconnecting to dsn %s\n", dsn);
SQLDisconnect(ODBC_con);
res = odbc_init();
if (res < 0) {
ast_verb(11, "cdr_odbc: %s has gone away!\n", dsn);
odbc_disconnect();
} else {
ast_verb(11, "cdr_odbc: Trying Query again!\n");
res = odbc_do_query();
if (res < 0) {
ast_verb(11, "cdr_odbc: Query FAILED Call not logged!\n");
}
}
}
} else {
ast_verb(11, "cdr_odbc: Query FAILED Call not logged!\n");
}
SQLFreeHandle(SQL_HANDLE_STMT, ODBC_stmt);
ast_mutex_unlock(&odbc_lock);
return 0;
}
static int odbc_unload_module(void)
{
ast_mutex_lock(&odbc_lock);
if (connected) {
ast_verb(11, "cdr_odbc: Disconnecting from %s\n", dsn);
SQLFreeHandle(SQL_HANDLE_STMT, ODBC_stmt);
odbc_disconnect();
}
if (dsn) {
ast_verb(11, "cdr_odbc: free dsn\n");
ast_free(dsn);
}
if (username) {
ast_verb(11, "cdr_odbc: free username\n");
ast_free(username);
}
if (password) {
ast_verb(11, "cdr_odbc: free password\n");
ast_free(password);
}
if (table) {
ast_verb(11, "cdr_odbc: free table\n");
ast_free(table);
}
ast_cdr_unregister(name);
ast_mutex_unlock(&odbc_lock);
return 0;
}
static int odbc_load_module(int reload)
{
int res = 0;
struct ast_config *cfg;
struct ast_variable *var;
const char *tmp;
struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
ast_mutex_lock(&odbc_lock);
do {
cfg = ast_config_load(config, config_flags);
if (!cfg) {
ast_log(LOG_WARNING, "cdr_odbc: Unable to load config for ODBC CDR's: %s\n", config);
res = AST_MODULE_LOAD_DECLINE;
break;
} else if (cfg == CONFIG_STATUS_FILEUNCHANGED)
break;
var = ast_variable_browse(cfg, "global");
if (!var) {
/* nothing configured */
break;
}
if ((tmp = ast_variable_retrieve(cfg, "global", "dsn")) == NULL) {
ast_log(LOG_WARNING, "cdr_odbc: dsn not specified. Assuming asteriskdb\n");
tmp = "asteriskdb";
}
if (dsn)
ast_free(dsn);
dsn = ast_strdup(tmp);
if (dsn == NULL) {
res = -1;
break;
}
if ((tmp = ast_variable_retrieve(cfg, "global", "dispositionstring")))
dispositionstring = ast_true(tmp);
else
dispositionstring = 0;
if ((tmp = ast_variable_retrieve(cfg, "global", "username"))) {
if (username)
ast_free(username);
username = ast_strdup(tmp);
if (username == NULL) {
res = -1;
break;
}
}
if ((tmp = ast_variable_retrieve(cfg, "global", "password"))) {
if (password)
ast_free(password);
password = ast_strdup(tmp);
if (password == NULL) {
res = -1;
break;
}
}
if ((tmp = ast_variable_retrieve(cfg, "global", "loguniqueid"))) {
loguniqueid = ast_true(tmp);
if (loguniqueid) {
ast_debug(1, "cdr_odbc: Logging uniqueid\n");
} else {
ast_debug(1, "cdr_odbc: Not logging uniqueid\n");
}
} else {
ast_debug(1, "cdr_odbc: Not logging uniqueid\n");
loguniqueid = 0;
}
if ((tmp = ast_variable_retrieve(cfg, "global", "usegmtime"))) {
usegmtime = ast_true(tmp);
if (usegmtime) {
ast_debug(1, "cdr_odbc: Logging in GMT\n");
} else {
ast_debug(1, "cdr_odbc: Not logging in GMT\n");
}
} else {
ast_debug(1, "cdr_odbc: Not logging in GMT\n");
usegmtime = 0;
}
if ((tmp = ast_variable_retrieve(cfg, "global", "table")) == NULL) {
ast_log(LOG_WARNING, "cdr_odbc: table not specified. Assuming cdr\n");
tmp = "cdr";
}
if (table)
ast_free(table);
table = ast_strdup(tmp);
if (table == NULL) {
res = -1;
break;
}
ast_verb(3, "cdr_odbc: dsn is %s\n", dsn);
if (username) {
ast_verb(3, "cdr_odbc: username is %s\n", username);
ast_verb(3, "cdr_odbc: password is [secret]\n");
} else
ast_verb(3, "cdr_odbc: retrieving username and password from odbc config\n");
ast_verb(3, "cdr_odbc: table is %s\n", table);
res = odbc_init();
if (res < 0) {
ast_log(LOG_ERROR, "cdr_odbc: Unable to connect to datasource: %s\n", dsn);
ast_verb(3, "cdr_odbc: Unable to connect to datasource: %s\n", dsn);
}
res = ast_cdr_register(name, ast_module_info->description, odbc_log);
if (res) {
ast_log(LOG_ERROR, "cdr_odbc: Unable to register ODBC CDR handling\n");
}
} while (0);
if (cfg && cfg != CONFIG_STATUS_FILEUNCHANGED)
ast_config_destroy(cfg);
ast_mutex_unlock(&odbc_lock);
return res;
}
static int odbc_do_query(void)
{
int ODBC_res;
ODBC_res = SQLExecute(ODBC_stmt);
if ((ODBC_res != SQL_SUCCESS) && (ODBC_res != SQL_SUCCESS_WITH_INFO)) {
ast_verb(11, "cdr_odbc: Error in Query %d\n", ODBC_res);
SQLFreeHandle(SQL_HANDLE_STMT, ODBC_stmt);
odbc_disconnect();
return -1;
} else {
ast_verb(11, "cdr_odbc: Query Successful!\n");
connected = 1;
}
return 0;
}
static int odbc_init(void)
{
int ODBC_res;
if (ODBC_env == SQL_NULL_HANDLE || connected == 0) {
ODBC_res = SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &ODBC_env);
if ((ODBC_res != SQL_SUCCESS) && (ODBC_res != SQL_SUCCESS_WITH_INFO)) {
ast_verb(11, "cdr_odbc: Error AllocHandle\n");
connected = 0;
return -1;
}
ODBC_res = SQLSetEnvAttr(ODBC_env, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0);
if ((ODBC_res != SQL_SUCCESS) && (ODBC_res != SQL_SUCCESS_WITH_INFO)) {
ast_verb(11, "cdr_odbc: Error SetEnv\n");
SQLFreeHandle(SQL_HANDLE_ENV, ODBC_env);
connected = 0;
return -1;
}
ODBC_res = SQLAllocHandle(SQL_HANDLE_DBC, ODBC_env, &ODBC_con);
if ((ODBC_res != SQL_SUCCESS) && (ODBC_res != SQL_SUCCESS_WITH_INFO)) {
ast_verb(11, "cdr_odbc: Error AllocHDB %d\n", ODBC_res);
SQLFreeHandle(SQL_HANDLE_ENV, ODBC_env);
connected = 0;
return -1;
}
SQLSetConnectAttr(ODBC_con, SQL_LOGIN_TIMEOUT, (SQLPOINTER *)10, 0);
}
/* Note that the username and password could be NULL here, but that is allowed in ODBC.
In this case, the default username and password will be used from odbc.conf */
ODBC_res = SQLConnect(ODBC_con, (SQLCHAR*)dsn, SQL_NTS, (SQLCHAR*)username, SQL_NTS, (SQLCHAR*)password, SQL_NTS);
if ((ODBC_res != SQL_SUCCESS) && (ODBC_res != SQL_SUCCESS_WITH_INFO)) {
ast_verb(11, "cdr_odbc: Error SQLConnect %d\n", ODBC_res);
SQLFreeHandle(SQL_HANDLE_DBC, ODBC_con);
SQLFreeHandle(SQL_HANDLE_ENV, ODBC_env);
connected = 0;
return -1;
} else {
ast_verb(11, "cdr_odbc: Connected to %s\n", dsn);
connected = 1;
}
return 0;
}
static int load_module(void)
{
return odbc_load_module(0);
}
static int unload_module(void)
{
return odbc_unload_module();
}
static int reload(void)
{
return odbc_load_module(1);
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "ODBC CDR Backend",
.load = load_module,
.unload = unload_module,
.reload = reload,
);
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