From eb896134ce40c3124edb593bf9f291f2a2241909 Mon Sep 17 00:00:00 2001
From: oej <oej@f38db490-d61c-443f-a65b-d21fe96a405b>
Date: Mon, 30 Oct 2006 21:48:41 +0000
Subject: Adding dialplan function IFMODULE, so you can create dialplans that
 handle various PBX installations and checks if a module is loaded before
 using it. 	example IFMODULE(chan_sip3.so)

issue #6671 in the bug tracker, finally gone. Thanks to mithraen for keeping
it updated.


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@46513 f38db490-d61c-443f-a65b-d21fe96a405b
---
 funcs/func_module.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 funcs/func_module.c

(limited to 'funcs')

diff --git a/funcs/func_module.c b/funcs/func_module.c
new file mode 100644
index 000000000..09d27a0d6
--- /dev/null
+++ b/funcs/func_module.c
@@ -0,0 +1,77 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 1999 - 2006, Digium, Inc.
+ *
+ * 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 Simple module check function
+ * \author Olle E. Johansson, Edvina.net
+ */
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "asterisk/module.h"
+#include "asterisk/channel.h"
+#include "asterisk/pbx.h"
+#include "asterisk/logger.h"
+#include "asterisk/utils.h"
+#include "asterisk/app.h"
+#include "asterisk/module.h"
+
+static int ifmodule_read(struct ast_channel *chan, char *cmd, char *data,
+		    char *buf, size_t len)
+{
+	char *ret = "0";
+
+	*buf = '\0';
+
+	if (data)
+		if (ast_module_check(data))
+			ret = "1";
+
+	ast_copy_string(buf, ret, len);
+
+	return 0;
+}
+
+static struct ast_custom_function ifmodule_function = {
+	.name = "IFMODULE",
+	.synopsis = "Checks if an Asterisk module is loaded in memory",
+	.syntax = "IFMODULE(<modulename.so>)",
+	.read = ifmodule_read,
+	.desc = "Checks if a module is loaded. Use the full module name\n"
+		"as shown by the list in \"show modules\". \n"
+		"Returns \"1\" if module exists in memory, otherwise \"0\".\n",
+};
+
+
+static int unload_module(void)
+{
+	return ast_custom_function_unregister(&ifmodule_function);
+}
+
+static int load_module(void)
+{
+	return ast_custom_function_register(&ifmodule_function);
+}
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Checks if Asterisk module is loaded in memory");
-- 
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