func_rand.c File Reference

Generate Random Number. More...

#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"

Include dependency graph for func_rand.c:

Go to the source code of this file.

Functions
static void	__reg_module (void)
static void	__unreg_module (void)
static int	acf_rand_exec (struct ast_channel *chan, const char *cmd, char *parse, char *buffer, size_t buflen)
static int	load_module (void)
static int	unload_module (void)
Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Random number dialplan function" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, }
static struct ast_custom_function	acf_rand
static struct ast_module_info *	ast_module_info = &__mod_info

---

Detailed Description

Generate Random Number.

Author:

Claude Patry <cpatry@gmail.com>

Tilghman Lesher ( http://asterisk.drunkcoder.com/ )

Definition in file func_rand.c.

---

Function Documentation

static void __reg_module

(

void

)

[static]

Definition at line 109 of file func_rand.c.

static void __unreg_module

(

void

)

[static]

Definition at line 109 of file func_rand.c.

static int acf_rand_exec	(	struct ast_channel *	chan,
		const char *	cmd,
		char *	parse,
		char *	buffer,
		size_t	buflen
	)		[static]

Definition at line 59 of file func_rand.c.

References args, AST_APP_ARG, ast_debug, AST_DECLARE_APP_ARGS, ast_random(), AST_STANDARD_APP_ARGS, and ast_strlen_zero().

{
   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, "%30d", &min_int) != 1)
      min_int = 0;

   if (ast_strlen_zero(args.max) || sscanf(args.max, "%30d", &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 int load_module

(

void

)

[static]

Definition at line 104 of file func_rand.c.

References ast_custom_function_register.

{
   return ast_custom_function_register(&acf_rand);
}

static int unload_module

(

void

)

[static]

Definition at line 97 of file func_rand.c.

References ast_custom_function_unregister().

{
   ast_custom_function_unregister(&acf_rand);

   return 0;
}

---

Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Random number dialplan function" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static]

Definition at line 109 of file func_rand.c.

struct ast_custom_function acf_rand [static]

Initial value:

 {
   .name = "RAND",
   .read = acf_rand_exec,
   .read_max = 12,
}

Definition at line 91 of file func_rand.c.

struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 109 of file func_rand.c.