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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2005, Russell Bryant <russelb@clemson.edu>
*
* func_db.c adapted from the old app_db.c, copyright by the following people
* Copyright (C) 2005, Mark Spencer <markster@digium.com>
* Copyright (C) 2003, Jefferson Noxon <jeff@debian.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 Functions for interaction with the Asterisk database
*
*/
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <regex.h>
#include "asterisk.h"
/* ASTERISK_FILE_VERSION(__FILE__, "$Revision$") */
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/logger.h"
#include "asterisk/options.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"
#include "asterisk/astdb.h"
static char *function_db_read(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
{
int argc;
char *args;
char *argv[2];
char *family;
char *key;
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)\n");
return buf;
}
args = ast_strdupa(data);
argc = ast_app_separate_args(args, '/', argv, sizeof(argv) / sizeof(argv[0]));
if (argc > 1) {
family = argv[0];
key = argv[1];
} else {
ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)\n");
return buf;
}
if (ast_db_get(family, key, buf, len-1)) {
ast_log(LOG_DEBUG, "DB: %s/%s not found in database.\n", family, key);
} else
pbx_builtin_setvar_helper(chan, "DB_RESULT", buf);
return buf;
}
static void function_db_write(struct ast_channel *chan, char *cmd, char *data, const char *value)
{
int argc;
char *args;
char *argv[2];
char *family;
char *key;
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)=<value>\n");
return;
}
args = ast_strdupa(data);
argc = ast_app_separate_args(args, '/', argv, sizeof(argv) / sizeof(argv[0]));
if (argc > 1) {
family = argv[0];
key = argv[1];
} else {
ast_log(LOG_WARNING, "DB requires an argument, DB(<family>/<key>)=value\n");
return;
}
if (ast_db_put(family, key, (char*)value)) {
ast_log(LOG_WARNING, "DB: Error writing value to database.\n");
}
}
#ifndef BUILTIN_FUNC
static
#endif
struct ast_custom_function db_function = {
.name = "DB",
.synopsis = "Read from or write to the Asterisk database",
.syntax = "DB(<family>/<key>)",
.desc =
"This function will read from or write a value to the Asterisk database. On a\n"
"read, this function returns the corresponding value from the database, or blank\n"
"if it does not exist. Reading a database value will also set the variable\n"
"DB_RESULT. If you wish to find out if an entry exists, use the DB_EXISTS\n"
"function.\n",
.read = function_db_read,
.write = function_db_write,
};
static char *function_db_exists(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
{
int argc;
char *args;
char *argv[2];
char *family;
char *key;
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "DB_EXISTS requires an argument, DB(<family>/<key>)\n");
return buf;
}
args = ast_strdupa(data);
argc = ast_app_separate_args(args, '/', argv, sizeof(argv) / sizeof(argv[0]));
if (argc > 1) {
family = argv[0];
key = argv[1];
} else {
ast_log(LOG_WARNING, "DB_EXISTS requires an argument, DB(<family>/<key>)\n");
return buf;
}
if (ast_db_get(family, key, buf, len-1))
ast_copy_string(buf, "0", len);
else {
pbx_builtin_setvar_helper(chan, "DB_RESULT", buf);
ast_copy_string(buf, "1", len);
}
return buf;
}
#ifndef BUILTIN_FUNC
static
#endif
struct ast_custom_function db_exists_function = {
.name = "DB_EXISTS",
.synopsis = "Check to see if a key exists in the Asterisk database",
.syntax = "DB_EXISTS(<family>/<key>)",
.desc = "This function will check to see if a key exists in the Asterisk\n"
"database. If it exists, the function will return \"1\". If not,\n"
"it will return \"0\". Checking for existence of a database key will\n"
"also set the variable DB_RESULT to the key's value if it exists.\n",
.read = function_db_exists,
};
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