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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2007, Digium, Inc.
*
* Mark Spencer <markster@digium.com> and others.
*
* 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 Custom SQLite3 CDR records.
*
* \author Adapted by Alejandro Rios <alejandro.rios@avatar.com.co> and
* Russell Bryant <russell@digium.com> from
* cdr_mysql_custom by Edward Eastman <ed@dm3.co.uk>,
* and cdr_sqlite by Holger Schurig <hs4233@mail.mn-solutions.de>
*
*
* \arg See also \ref AstCDR
*
*
* \ingroup cdr_drivers
*/
/*** MODULEINFO
<depend>sqlite3</depend>
***/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include <time.h>
#include <sqlite3.h>
#include "asterisk/paths.h" /* use ast_config_AST_LOG_DIR */
#include "asterisk/channel.h"
#include "asterisk/cdr.h"
#include "asterisk/module.h"
#include "asterisk/config.h"
#include "asterisk/pbx.h"
#include "asterisk/utils.h"
#include "asterisk/cli.h"
AST_MUTEX_DEFINE_STATIC(lock);
static const char config_file[] = "cdr_sqlite3_custom.conf";
static char *desc = "Customizable SQLite3 CDR Backend";
static char *name = "cdr_sqlite3_custom";
static sqlite3 *db = NULL;
static char table[80];
static char columns[1024];
static char values[1024];
static int load_config(int reload)
{
struct ast_config *cfg;
struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
struct ast_variable *mappingvar;
const char *tmp;
if (!(cfg = ast_config_load(config_file, config_flags))) {
if (reload)
ast_log(LOG_WARNING, "%s: Failed to reload configuration file.\n", name);
else {
ast_log(LOG_WARNING,
"%s: Failed to load configuration file. Module not activated.\n",
name);
}
return -1;
} else if (cfg == CONFIG_STATUS_FILEUNCHANGED)
return 0;
ast_mutex_lock(&lock);
if (!(mappingvar = ast_variable_browse(cfg, "master"))) {
/* nothing configured */
ast_mutex_unlock(&lock);
ast_config_destroy(cfg);
return 0;
}
/* Mapping must have a table name */
tmp = ast_variable_retrieve(cfg, "master", "table");
if (!ast_strlen_zero(tmp))
ast_copy_string(table, tmp, sizeof(table));
else {
ast_log(LOG_WARNING, "%s: Table name not specified. Assuming cdr.\n", name);
strcpy(table, "cdr");
}
tmp = ast_variable_retrieve(cfg, "master", "columns");
if (!ast_strlen_zero(tmp))
ast_copy_string(columns, tmp, sizeof(columns));
else {
ast_log(LOG_WARNING, "%s: Column names not specified. Module not loaded.\n",
name);
ast_mutex_unlock(&lock);
ast_config_destroy(cfg);
return -1;
}
tmp = ast_variable_retrieve(cfg, "master", "values");
if (!ast_strlen_zero(tmp))
ast_copy_string(values, tmp, sizeof(values));
else {
ast_log(LOG_WARNING, "%s: Values not specified. Module not loaded.\n", name);
ast_mutex_unlock(&lock);
ast_config_destroy(cfg);
return -1;
}
ast_mutex_unlock(&lock);
ast_config_destroy(cfg);
return 0;
}
/* assumues 'to' buffer is at least strlen(from) * 2 + 1 bytes */
static int do_escape(char *to, const char *from)
{
char *out = to;
for (; *from; from++) {
if (*from == '\'' || *from == '\\')
*out++ = *from;
*out++ = *from;
}
*out = '\0';
return 0;
}
static int sqlite3_log(struct ast_cdr *cdr)
{
int res = 0;
char *zErr = 0;
char *sql_cmd;
struct ast_channel dummy = { 0, };
int count;
{ /* Make it obvious that only sql_cmd should be used outside of this block */
char *sql_tmp_cmd;
char sql_insert_cmd[2048];
sql_tmp_cmd = sqlite3_mprintf("INSERT INTO %q (%q) VALUES (%q)", table, columns, values);
dummy.cdr = cdr;
pbx_substitute_variables_helper(&dummy, sql_tmp_cmd, sql_insert_cmd, sizeof(sql_insert_cmd) - 1);
sqlite3_free(sql_tmp_cmd);
sql_cmd = alloca(strlen(sql_insert_cmd) * 2 + 1);
do_escape(sql_cmd, sql_insert_cmd);
}
ast_mutex_lock(&lock);
for (count = 0; count < 5; count++) {
res = sqlite3_exec(db, sql_cmd, NULL, NULL, &zErr);
if (res != SQLITE_BUSY && res != SQLITE_LOCKED)
break;
usleep(200);
}
if (zErr) {
ast_log(LOG_ERROR, "%s: %s. sentence: %s.\n", name, zErr, sql_cmd);
sqlite3_free(zErr);
}
ast_mutex_unlock(&lock);
return res;
}
static int unload_module(void)
{
if (db)
sqlite3_close(db);
ast_cdr_unregister(name);
return 0;
}
static int load_module(void)
{
char *zErr;
char fn[PATH_MAX];
int res;
char *sql_cmd;
if (!load_config(0)) {
res = ast_cdr_register(name, desc, sqlite3_log);
if (res) {
ast_log(LOG_ERROR, "%s: Unable to register custom SQLite3 CDR handling\n", name);
return AST_MODULE_LOAD_DECLINE;
}
} else
return AST_MODULE_LOAD_DECLINE;
/* is the database there? */
snprintf(fn, sizeof(fn), "%s/master.db", ast_config_AST_LOG_DIR);
res = sqlite3_open(fn, &db);
if (!db) {
ast_log(LOG_ERROR, "%s: Could not open database %s.\n", name, fn);
sqlite3_free(zErr);
return AST_MODULE_LOAD_DECLINE;
}
/* is the table there? */
sql_cmd = sqlite3_mprintf("SELECT COUNT(AcctId) FROM %q;", table);
res = sqlite3_exec(db, sql_cmd, NULL, NULL, NULL);
sqlite3_free(sql_cmd);
if (res) {
sql_cmd = sqlite3_mprintf("CREATE TABLE %q (AcctId INTEGER PRIMARY KEY,%q)", table, columns);
res = sqlite3_exec(db, sql_cmd, NULL, NULL, &zErr);
sqlite3_free(sql_cmd);
if (zErr) {
ast_log(LOG_WARNING, "%s: %s.\n", name, zErr);
sqlite3_free(zErr);
return 0;
}
if (res) {
ast_log(LOG_ERROR, "%s: Unable to create table '%s': %s.\n", name, table, zErr);
sqlite3_free(zErr);
if (db)
sqlite3_close(db);
return AST_MODULE_LOAD_DECLINE;
}
}
return 0;
}
static int reload(void)
{
return load_config(1);
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "SQLite3 Custom CDR Module",
.load = load_module,
.unload = unload_module,
.reload = reload,
);
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