1 files changed, 93 insertions, 0 deletions
diff --git a/trunk/funcs/func_rand.c b/trunk/funcs/func_rand.c
new file mode 100644
index 000000000..a3db21d26
--- /dev/null
+++ b/trunk/funcs/func_rand.c
@@ -0,0 +1,93 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2006, Digium, Inc.
+ * Copyright (C) 2006, Claude Patry
+ *
+ * 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 Generate Random Number
+ * 
+ * \author Claude Patry <cpatry@gmail.com>
+ * \author Tilghman Lesher ( http://asterisk.drunkcoder.com/ )
+ * \ingroup functions
+ */
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include "asterisk/module.h"
+#include "asterisk/channel.h"
+#include "asterisk/pbx.h"
+#include "asterisk/utils.h"
+#include "asterisk/app.h"
+
+static int acf_rand_exec(struct ast_channel *chan, const char *cmd,
+			 char *parse, char *buffer, size_t buflen)
+{
+	int min_int, response_int, max_int;
+	AST_DECLARE_APP_ARGS(args,
+			     AST_APP_ARG(min);
+			     AST_APP_ARG(max);
+	);
+
+	AST_STANDARD_APP_ARGS(args, parse);
+
+	if (ast_strlen_zero(args.min) || sscanf(args.min, "%d", &min_int) != 1)
+		min_int = 0;
+
+	if (ast_strlen_zero(args.max) || sscanf(args.max, "%d", &max_int) != 1)
+		max_int = RAND_MAX;
+
+	if (max_int < min_int) {
+		int tmp = max_int;
+
+		max_int = min_int;
+		min_int = tmp;
+		ast_debug(1, "max<min\n");
+	}
+
+	response_int = min_int + (ast_random() % (max_int - min_int + 1));
+	ast_debug(1, "%d was the lucky number in range [%d,%d]\n", response_int, min_int, max_int);
+	snprintf(buffer, buflen, "%d", response_int);
+
+	return 0;
+}
+
+static struct ast_custom_function acf_rand = {
+	.name = "RAND",
+	.synopsis = "Choose a random number in a range",
+	.syntax = "RAND([min][,max])",
+	.desc =
+		"Choose a random number between min and max.  Min defaults to 0, if not\n"
+		"specified, while max defaults to RAND_MAX (2147483647 on many systems).\n"
+		"  Example:  Set(junky=${RAND(1,8)}); \n"
+		"  Sets junky to a random number between 1 and 8, inclusive.\n",
+	.read = acf_rand_exec,
+};
+
+static int unload_module(void)
+{
+	ast_custom_function_unregister(&acf_rand);
+
+	return 0;
+}
+
+static int load_module(void)
+{
+	return ast_custom_function_register(&acf_rand);
+}
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Random number dialplan function");