2005-05-05 05:39:33 +00:00
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/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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2005-05-05 12:48:52 +00:00
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* Conditional logic dialplan functions
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2005-05-05 05:39:33 +00:00
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*
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* Copyright (C) 2005, Digium, Inc.
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2005-05-05 12:48:52 +00:00
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* Portions Copyright (C) 2005, Anthony Minessale II
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2005-05-05 05:39:33 +00:00
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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
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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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2005-06-06 22:12:19 +00:00
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#include "asterisk.h"
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/* ASTERISK_FILE_VERSION(__FILE__, "$Revision$") */
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2005-05-05 05:39:33 +00:00
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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/utils.h"
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#include "asterisk/app.h"
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#include "asterisk/config.h" /* for ast_true */
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static char *builtin_function_isnull(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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2005-06-03 21:04:04 +00:00
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return data && *data ? "0" : "1";
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2005-05-05 05:39:33 +00:00
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}
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static char *builtin_function_exists(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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2005-06-03 21:04:04 +00:00
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return data && *data ? "1" : "0";
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}
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2005-05-05 05:39:33 +00:00
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2005-06-03 21:04:04 +00:00
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static char *builtin_function_iftime(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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struct ast_timing timing;
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char *ret;
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char *expr;
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char *iftrue;
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char *iffalse;
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if (!(data = ast_strdupa(data))) {
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ast_log(LOG_WARNING, "Memory Error!\n");
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return NULL;
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}
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data = ast_strip_quoted(data, "\"", "\"");
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expr = strsep(&data, "?");
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iftrue = strsep(&data, ":");
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iffalse = data;
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if (!expr || ast_strlen_zero(expr) || !(iftrue || iffalse)) {
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ast_log(LOG_WARNING, "Syntax IFTIME(<timespec>?[<true>][:<false>])\n");
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return NULL;
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}
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if (!ast_build_timing(&timing, expr)) {
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ast_log(LOG_WARNING, "Invalid Time Spec.\n");
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return NULL;
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}
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if (iftrue)
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iftrue = ast_strip_quoted(iftrue, "\"", "\"");
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if (iffalse)
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iffalse = ast_strip_quoted(iffalse, "\"", "\"");
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if ((ret = ast_check_timing(&timing) ? iftrue : iffalse)) {
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ast_copy_string(buf, ret, len);
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ret = buf;
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}
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return ret;
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2005-05-05 05:39:33 +00:00
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}
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static char *builtin_function_if(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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2005-06-03 21:04:04 +00:00
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char *ret;
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char *expr;
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char *iftrue;
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char *iffalse;
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if (!(data = ast_strdupa(data))) {
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2005-05-05 05:39:33 +00:00
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ast_log(LOG_WARNING, "Memory Error!\n");
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2005-06-03 21:04:04 +00:00
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return NULL;
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2005-05-05 05:39:33 +00:00
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}
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2005-06-03 21:04:04 +00:00
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data = ast_strip_quoted(data, "\"", "\"");
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expr = strsep(&data, "?");
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iftrue = strsep(&data, ":");
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iffalse = data;
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if (!expr || ast_strlen_zero(expr) || !(iftrue || iffalse)) {
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ast_log(LOG_WARNING, "Syntax IF(<timespec>?[<true>][:<false>])\n");
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return NULL;
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}
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if (iftrue)
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iftrue = ast_strip_quoted(iftrue, "\"", "\"");
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if (iffalse)
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iffalse = ast_strip_quoted(iffalse, "\"", "\"");
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if ((ret = ast_true(expr) ? iftrue : iffalse)) {
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ast_copy_string(buf, ret, len);
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ret = buf;
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}
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2005-05-05 05:39:33 +00:00
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return ret;
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}
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2005-05-19 20:38:51 +00:00
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static char *builtin_function_set(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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2005-06-03 21:04:04 +00:00
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char *varname;
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char *val;
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2005-05-19 20:38:51 +00:00
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2005-06-03 21:04:04 +00:00
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if (!(data = ast_strdupa(data))) {
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ast_log(LOG_WARNING, "Memory Error!\n");
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return NULL;
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}
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varname = strsep(&data, "=");
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val = data;
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if (!varname || ast_strlen_zero(varname) || !val) {
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ast_log(LOG_WARNING, "Syntax SET(<varname>=[<value>])\n");
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return NULL;
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}
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varname = ast_strip(varname);
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val = ast_strip(val);
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pbx_builtin_setvar_helper(chan, varname, val);
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ast_copy_string(buf, val, len);
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return buf;
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2005-05-19 20:38:51 +00:00
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}
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2005-05-05 05:39:33 +00:00
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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 isnull_function = {
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.name = "ISNULL",
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.synopsis = "NULL Test: Returns 1 if NULL or 0 otherwise",
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.syntax = "ISNULL(<data>)",
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.read = builtin_function_isnull,
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};
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2005-05-19 20:38:51 +00:00
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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 set_function = {
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.name = "SET",
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2005-06-03 21:04:04 +00:00
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.synopsis = "SET assigns a value to a channel variable",
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.syntax = "SET(<varname>=[<value>])",
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2005-05-19 20:38:51 +00:00
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.read = builtin_function_set,
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};
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2005-05-05 05:39:33 +00:00
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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 exists_function = {
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.name = "EXISTS",
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.synopsis = "Existence Test: Returns 1 if exists, 0 otherwise",
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.syntax = "EXISTS(<data>)",
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.read = builtin_function_exists,
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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 if_function = {
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.name = "IF",
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.synopsis = "Conditional: Returns the data following '?' if true else the data following ':'",
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2005-06-03 21:04:04 +00:00
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.syntax = "IF(<expr>?[<true>][:<false>])",
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2005-05-05 05:39:33 +00:00
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.read = builtin_function_if,
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};
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2005-06-03 21:04:04 +00:00
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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 if_time_function = {
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.name = "IFTIME",
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.synopsis = "Temporal Conditional: Returns the data following '?' if true else the data following ':'",
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.syntax = "IFTIME(<timespec>?[<true>][:<false>])",
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.read = builtin_function_iftime,
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};
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