git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@7682 65c4cc65-6c06-0410-ace0-fbb531ad65f3
171 lines
4.5 KiB
C
171 lines
4.5 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2005, 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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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <regex.h>
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#include "asterisk.h"
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/* ASTERISK_FILE_VERSION(__FILE__, "$Revision$") */
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/logger.h"
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#include "asterisk/options.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 char *function_db_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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int argc;
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char *args;
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char *argv[2];
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char *family;
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char *key;
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)\n");
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return buf;
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}
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args = ast_strdupa(data);
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argc = ast_app_separate_args(args, '/', argv, sizeof(argv) / sizeof(argv[0]));
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if (argc > 1) {
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family = argv[0];
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key = argv[1];
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} else {
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ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)\n");
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return buf;
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}
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if (ast_db_get(family, key, buf, len-1)) {
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ast_log(LOG_DEBUG, "DB: %s/%s not found in database.\n", family, key);
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} else
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pbx_builtin_setvar_helper(chan, "DB_RESULT", buf);
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return buf;
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}
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static void function_db_write(struct ast_channel *chan, char *cmd, char *data, const char *value)
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{
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int argc;
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char *args;
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char *argv[2];
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char *family;
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char *key;
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)=<value>\n");
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return;
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}
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args = ast_strdupa(data);
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argc = ast_app_separate_args(args, '/', argv, sizeof(argv) / sizeof(argv[0]));
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if (argc > 1) {
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family = argv[0];
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key = argv[1];
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} else {
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ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)=value\n");
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return;
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}
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if (ast_db_put(family, key, (char*)value)) {
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ast_log(LOG_WARNING, "DB: Error writing value to database.\n");
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}
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}
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#ifndef BUILTIN_FUNC
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static
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#endif
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struct ast_custom_function db_function = {
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.name = "DB",
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.synopsis = "Read or Write from/to the Asterisk database",
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.syntax = "DB(<family>/<key>)",
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.desc = "This function will read or write a value from/to the Asterisk database.\n"
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"DB(...) will read a value from the database, while DB(...)=value\n"
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"will write a value to the database. On a read, this function\n"
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"returns the value from the datase, or NULL if it does not exist.\n"
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"On a write, this function will always return NULL. Reading a database value\n"
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"will also set the variable DB_RESULT.\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 char *function_db_exists(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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int argc;
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char *args;
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char *argv[2];
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char *family;
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char *key;
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "DB_EXISTS requires an argument, DB(<family>/<key>)\n");
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return buf;
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}
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args = ast_strdupa(data);
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argc = ast_app_separate_args(args, '/', argv, sizeof(argv) / sizeof(argv[0]));
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if (argc > 1) {
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family = argv[0];
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key = argv[1];
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} else {
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ast_log(LOG_WARNING, "DB_EXISTS requires an argument, DB(<family>/<key>)\n");
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return buf;
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}
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if (ast_db_get(family, key, buf, len-1))
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ast_copy_string(buf, "0", len);
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else {
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pbx_builtin_setvar_helper(chan, "DB_RESULT", buf);
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ast_copy_string(buf, "1", len);
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}
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return buf;
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}
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#ifndef BUILTIN_FUNC
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static
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#endif
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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 = "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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