* acl (named_acl.c) * cdr * cel * ccss * dnsmgr * dsp * enum * extconfig (config.c) * features * http * indications * logger * manager * plc * sounds * udptl These modules are now loaded at appropriate time by the module loader. Unlike loadable modules these use AST_MODULE_LOAD_FAILURE on error so the module loader will abort startup on failure of these modules. Some of these modules are still initialized or shutdown from outside the module loader. logger.c is initialized very early and shutdown very late, manager.c is initialized by the module loader but is shutdown by the Asterisk core (too much uses it without holding references). Change-Id: I371a9a45064f20026c492623ea8062d02a1ab97f
365 lines
9.2 KiB
C
365 lines
9.2 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2007, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com> and others.
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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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 Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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* \file
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* \brief Custom SQLite3 CDR records.
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*
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* \author Adapted by Alejandro Rios <alejandro.rios@avatar.com.co> and
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* Russell Bryant <russell@digium.com> from
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* cdr_mysql_custom by Edward Eastman <ed@dm3.co.uk>,
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* and cdr_sqlite by Holger Schurig <hs4233@mail.mn-solutions.de>
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*
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*
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* \arg See also \ref AstCDR
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*
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*
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* \ingroup cdr_drivers
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*/
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/*** MODULEINFO
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<depend>sqlite3</depend>
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<support_level>extended</support_level>
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***/
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#include "asterisk.h"
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#include <sqlite3.h>
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#include "asterisk/paths.h" /* use ast_config_AST_LOG_DIR */
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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/config.h"
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#include "asterisk/pbx.h"
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#include "asterisk/utils.h"
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#include "asterisk/cli.h"
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#include "asterisk/app.h"
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AST_MUTEX_DEFINE_STATIC(lock);
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static const char config_file[] = "cdr_sqlite3_custom.conf";
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static const char desc[] = "Customizable SQLite3 CDR Backend";
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static const char name[] = "cdr_sqlite3_custom";
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static sqlite3 *db = NULL;
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static char table[80];
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static char *columns;
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static int busy_timeout;
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struct values {
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AST_LIST_ENTRY(values) list;
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char expression[1];
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};
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static AST_LIST_HEAD_STATIC(sql_values, values);
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static void free_config(int reload);
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static int load_column_config(const char *tmp)
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{
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char *col = NULL;
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char *cols = NULL, *save = NULL;
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char *escaped = NULL;
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struct ast_str *column_string = NULL;
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if (ast_strlen_zero(tmp)) {
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ast_log(LOG_WARNING, "Column names not specified. Module not loaded.\n");
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return -1;
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}
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if (!(column_string = ast_str_create(1024))) {
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ast_log(LOG_ERROR, "Out of memory creating temporary buffer for column list for table '%s.'\n", table);
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return -1;
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}
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if (!(save = cols = ast_strdup(tmp))) {
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ast_log(LOG_ERROR, "Out of memory creating temporary buffer for column list for table '%s.'\n", table);
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ast_free(column_string);
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return -1;
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}
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while ((col = strsep(&cols, ","))) {
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col = ast_strip(col);
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escaped = sqlite3_mprintf("%q", col);
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if (!escaped) {
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ast_log(LOG_ERROR, "Out of memory creating entry for column '%s' in table '%s.'\n", col, table);
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ast_free(column_string);
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ast_free(save);
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return -1;
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}
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ast_str_append(&column_string, 0, "%s%s", ast_str_strlen(column_string) ? "," : "", escaped);
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sqlite3_free(escaped);
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}
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if (!(columns = ast_strdup(ast_str_buffer(column_string)))) {
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ast_log(LOG_ERROR, "Out of memory copying columns string for table '%s.'\n", table);
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ast_free(column_string);
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ast_free(save);
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return -1;
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}
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ast_free(column_string);
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ast_free(save);
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return 0;
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}
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static int load_values_config(const char *tmp)
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{
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char *vals = NULL, *save = NULL;
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struct values *value = NULL;
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int i;
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AST_DECLARE_APP_ARGS(val,
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AST_APP_ARG(ues)[200]; /* More than 200 columns in this CDR? Yeah, right... */
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);
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if (ast_strlen_zero(tmp)) {
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ast_log(LOG_WARNING, "Values not specified. Module not loaded.\n");
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return -1;
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}
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if (!(save = vals = ast_strdup(tmp))) {
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ast_log(LOG_ERROR, "Out of memory creating temporary buffer for value '%s'\n", tmp);
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return -1;
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}
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AST_STANDARD_RAW_ARGS(val, vals);
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for (i = 0; i < val.argc; i++) {
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/* Strip the single quotes off if they are there */
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char *v = ast_strip_quoted(val.ues[i], "'", "'");
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value = ast_calloc(sizeof(char), sizeof(*value) + strlen(v));
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if (!value) {
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ast_log(LOG_ERROR, "Out of memory creating entry for value '%s'\n", v);
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ast_free(save);
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return -1;
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}
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strcpy(value->expression, v); /* SAFE */
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AST_LIST_INSERT_TAIL(&sql_values, value, list);
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}
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ast_free(save);
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return 0;
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}
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static int load_config(int reload)
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{
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struct ast_config *cfg;
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struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
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const char *tmp;
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if ((cfg = ast_config_load(config_file, config_flags)) == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEINVALID) {
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ast_log(LOG_WARNING, "Failed to %sload configuration file. %s\n", reload ? "re" : "", reload ? "" : "Module not activated.");
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return -1;
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} else if (cfg == CONFIG_STATUS_FILEUNCHANGED) {
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return 0;
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}
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if (reload) {
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free_config(1);
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}
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if (!ast_variable_browse(cfg, "master")) {
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/* Nothing configured */
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ast_config_destroy(cfg);
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return -1;
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}
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/* Mapping must have a table name */
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if (!ast_strlen_zero(tmp = ast_variable_retrieve(cfg, "master", "table"))) {
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ast_copy_string(table, tmp, sizeof(table));
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} else {
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ast_log(LOG_WARNING, "Table name not specified. Assuming cdr.\n");
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strcpy(table, "cdr");
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}
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/* sqlite3_busy_timeout in miliseconds */
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if ((tmp = ast_variable_retrieve(cfg, "master", "busy_timeout")) != NULL) {
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if (ast_parse_arg(tmp, PARSE_INT32|PARSE_DEFAULT, &busy_timeout, 1000) != 0) {
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ast_log(LOG_WARNING, "Invalid busy_timeout value '%s' specified. Using 1000 instead.\n", tmp);
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}
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} else {
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busy_timeout = 1000;
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}
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/* Columns */
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if (load_column_config(ast_variable_retrieve(cfg, "master", "columns"))) {
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ast_config_destroy(cfg);
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free_config(0);
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return -1;
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}
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/* Values */
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if (load_values_config(ast_variable_retrieve(cfg, "master", "values"))) {
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ast_config_destroy(cfg);
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free_config(0);
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return -1;
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}
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ast_verb(4, "cdr_sqlite3_custom: Logging CDR records to table '%s' in 'master.db'\n", table);
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ast_config_destroy(cfg);
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return 0;
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}
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static void free_config(int reload)
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{
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struct values *value;
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if (!reload && db) {
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sqlite3_close(db);
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db = NULL;
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}
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if (columns) {
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ast_free(columns);
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columns = NULL;
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}
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while ((value = AST_LIST_REMOVE_HEAD(&sql_values, list))) {
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ast_free(value);
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}
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}
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static int write_cdr(struct ast_cdr *cdr)
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{
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int res = 0;
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char *error = NULL;
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char *sql = NULL;
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if (db == NULL) {
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/* Should not have loaded, but be failsafe. */
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return 0;
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}
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ast_mutex_lock(&lock);
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{ /* Make it obvious that only sql should be used outside of this block */
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char *escaped;
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char subst_buf[2048];
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struct values *value;
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struct ast_channel *dummy;
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struct ast_str *value_string = ast_str_create(1024);
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dummy = ast_dummy_channel_alloc();
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if (!dummy) {
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ast_log(LOG_ERROR, "Unable to allocate channel for variable subsitution.\n");
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ast_free(value_string);
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ast_mutex_unlock(&lock);
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return 0;
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}
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ast_channel_cdr_set(dummy, ast_cdr_dup(cdr));
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AST_LIST_TRAVERSE(&sql_values, value, list) {
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pbx_substitute_variables_helper(dummy, value->expression, subst_buf, sizeof(subst_buf) - 1);
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escaped = sqlite3_mprintf("%q", subst_buf);
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ast_str_append(&value_string, 0, "%s'%s'", ast_str_strlen(value_string) ? "," : "", escaped);
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sqlite3_free(escaped);
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}
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sql = sqlite3_mprintf("INSERT INTO %q (%s) VALUES (%s)", table, columns, ast_str_buffer(value_string));
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ast_debug(1, "About to log: %s\n", sql);
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ast_channel_unref(dummy);
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ast_free(value_string);
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}
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if (sqlite3_exec(db, sql, NULL, NULL, &error) != SQLITE_OK) {
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ast_log(LOG_ERROR, "%s. SQL: %s.\n", error, sql);
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sqlite3_free(error);
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}
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if (sql) {
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sqlite3_free(sql);
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}
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ast_mutex_unlock(&lock);
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return res;
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}
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static int unload_module(void)
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{
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if (ast_cdr_unregister(name)) {
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return -1;
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}
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free_config(0);
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return 0;
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}
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static int load_module(void)
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{
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char *error;
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char filename[PATH_MAX];
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int res;
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char *sql;
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if (load_config(0)) {
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return AST_MODULE_LOAD_DECLINE;
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}
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/* is the database there? */
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snprintf(filename, sizeof(filename), "%s/master.db", ast_config_AST_LOG_DIR);
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res = sqlite3_open(filename, &db);
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if (res != SQLITE_OK) {
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ast_log(LOG_ERROR, "Could not open database %s.\n", filename);
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free_config(0);
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return AST_MODULE_LOAD_DECLINE;
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}
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sqlite3_busy_timeout(db, busy_timeout);
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/* is the table there? */
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sql = sqlite3_mprintf("SELECT COUNT(AcctId) FROM %q;", table);
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res = sqlite3_exec(db, sql, NULL, NULL, NULL);
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sqlite3_free(sql);
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if (res != SQLITE_OK) {
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/* We don't use %q for the column list here since we already escaped when building it */
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sql = sqlite3_mprintf("CREATE TABLE %q (AcctId INTEGER PRIMARY KEY, %s)", table, columns);
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res = sqlite3_exec(db, sql, NULL, NULL, &error);
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sqlite3_free(sql);
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if (res != SQLITE_OK) {
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ast_log(LOG_WARNING, "Unable to create table '%s': %s.\n", table, error);
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sqlite3_free(error);
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free_config(0);
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return AST_MODULE_LOAD_DECLINE;
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}
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}
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res = ast_cdr_register(name, desc, write_cdr);
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if (res) {
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ast_log(LOG_ERROR, "Unable to register custom SQLite3 CDR handling\n");
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free_config(0);
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return AST_MODULE_LOAD_DECLINE;
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}
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return AST_MODULE_LOAD_SUCCESS;
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}
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static int reload(void)
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{
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int res = 0;
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ast_mutex_lock(&lock);
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res = load_config(1);
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ast_mutex_unlock(&lock);
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return res;
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}
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "SQLite3 Custom CDR Module",
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.support_level = AST_MODULE_SUPPORT_EXTENDED,
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.load = load_module,
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.unload = unload_module,
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.reload = reload,
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.load_pri = AST_MODPRI_CDR_DRIVER,
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.requires = "cdr",
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);
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