![rizzo](/assets/img/avatar_default.png)
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@89512 f38db490-d61c-443f-a65b-d21fe96a405b
226 lines
6 KiB
C
226 lines
6 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2005-2006, Russell Bryant <russelb@clemson.edu>
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*
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* func_db.c adapted from the old app_db.c, copyright by the following people
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* Copyright (C) 2005, Mark Spencer <markster@digium.com>
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* Copyright (C) 2003, Jefferson Noxon <jeff@debian.org>
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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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/*! \file
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*
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* \brief Functions for interaction with the Asterisk database
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*
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* \author Russell Bryant <russelb@clemson.edu>
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*
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* \ingroup functions
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <regex.h>
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#include "asterisk/module.h"
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/utils.h"
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#include "asterisk/app.h"
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#include "asterisk/astdb.h"
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static int function_db_read(struct ast_channel *chan, const char *cmd,
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char *parse, char *buf, size_t len)
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{
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(family);
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AST_APP_ARG(key);
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);
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buf[0] = '\0';
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if (ast_strlen_zero(parse)) {
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ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)\n");
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return -1;
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}
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AST_NONSTANDARD_APP_ARGS(args, parse, '/');
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if (args.argc < 2) {
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ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)\n");
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return -1;
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}
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if (ast_db_get(args.family, args.key, buf, len - 1)) {
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ast_debug(1, "DB: %s/%s not found in database.\n", args.family, args.key);
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} else
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pbx_builtin_setvar_helper(chan, "DB_RESULT", buf);
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return 0;
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}
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static int function_db_write(struct ast_channel *chan, const char *cmd, char *parse,
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const char *value)
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{
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(family);
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AST_APP_ARG(key);
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);
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if (ast_strlen_zero(parse)) {
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ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)=<value>\n");
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return -1;
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}
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AST_NONSTANDARD_APP_ARGS(args, parse, '/');
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if (args.argc < 2) {
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ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)=value\n");
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return -1;
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}
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if (ast_db_put(args.family, args.key, (char *) value))
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ast_log(LOG_WARNING, "DB: Error writing value to database.\n");
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return 0;
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}
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static struct ast_custom_function db_function = {
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.name = "DB",
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.synopsis = "Read from or write to the Asterisk database",
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.syntax = "DB(<family>/<key>)",
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.desc =
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"This function will read from or write a value to the Asterisk database. On a\n"
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"read, this function returns the corresponding value from the database, or blank\n"
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"if it does not exist. Reading a database value will also set the variable\n"
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"DB_RESULT. If you wish to find out if an entry exists, use the DB_EXISTS\n"
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"function.\n",
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.read = function_db_read,
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.write = function_db_write,
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};
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static int function_db_exists(struct ast_channel *chan, const char *cmd,
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char *parse, char *buf, size_t len)
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{
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(family);
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AST_APP_ARG(key);
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);
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buf[0] = '\0';
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if (ast_strlen_zero(parse)) {
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ast_log(LOG_WARNING, "DB_EXISTS requires an argument, DB(<family>/<key>)\n");
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return -1;
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}
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AST_NONSTANDARD_APP_ARGS(args, parse, '/');
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if (args.argc < 2) {
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ast_log(LOG_WARNING, "DB_EXISTS requires an argument, DB(<family>/<key>)\n");
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return -1;
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}
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if (ast_db_get(args.family, args.key, buf, len - 1))
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strcpy(buf, "0");
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else {
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pbx_builtin_setvar_helper(chan, "DB_RESULT", buf);
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strcpy(buf, "1");
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}
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return 0;
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}
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static struct ast_custom_function db_exists_function = {
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.name = "DB_EXISTS",
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.synopsis = "Check to see if a key exists in the Asterisk database",
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.syntax = "DB_EXISTS(<family>/<key>)",
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.desc =
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"This function will check to see if a key exists in the Asterisk\n"
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"database. If it exists, the function will return \"1\". If not,\n"
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"it will return \"0\". Checking for existence of a database key will\n"
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"also set the variable DB_RESULT to the key's value if it exists.\n",
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.read = function_db_exists,
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};
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static int function_db_delete(struct ast_channel *chan, const char *cmd,
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char *parse, char *buf, size_t len)
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{
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(family);
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AST_APP_ARG(key);
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);
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buf[0] = '\0';
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if (ast_strlen_zero(parse)) {
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ast_log(LOG_WARNING, "DB_DELETE requires an argument, DB_DELETE(<family>/<key>)\n");
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return -1;
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}
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AST_NONSTANDARD_APP_ARGS(args, parse, '/');
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if (args.argc < 2) {
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ast_log(LOG_WARNING, "DB_DELETE requires an argument, DB_DELETE(<family>/<key>)\n");
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return -1;
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}
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if (ast_db_get(args.family, args.key, buf, len - 1)) {
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ast_debug(1, "DB_DELETE: %s/%s not found in database.\n", args.family, args.key);
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} else {
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if (ast_db_del(args.family, args.key)) {
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ast_debug(1, "DB_DELETE: %s/%s could not be deleted from the database\n", args.family, args.key);
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}
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}
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pbx_builtin_setvar_helper(chan, "DB_RESULT", buf);
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return 0;
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}
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static struct ast_custom_function db_delete_function = {
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.name = "DB_DELETE",
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.synopsis = "Return a value from the database and delete it",
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.syntax = "DB_DELETE(<family>/<key>)",
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.desc =
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"This function will retrieve a value from the Asterisk database\n"
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" and then remove that key from the database. DB_RESULT\n"
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"will be set to the key's value if it exists.\n",
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.read = function_db_delete,
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};
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static int unload_module(void)
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{
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int res = 0;
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res |= ast_custom_function_unregister(&db_function);
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res |= ast_custom_function_unregister(&db_exists_function);
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res |= ast_custom_function_unregister(&db_delete_function);
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return res;
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}
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static int load_module(void)
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{
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int res = 0;
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res |= ast_custom_function_register(&db_function);
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res |= ast_custom_function_register(&db_exists_function);
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res |= ast_custom_function_register(&db_delete_function);
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return res;
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Database (astdb) related dialplan functions");
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