Fri Jul 24 00:41:45 2009

Asterisk developer's documentation


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"

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_DEFAULT , .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 = "a9c98e5d177805051735cb5b0b16b0a0" , .load = load_module, .unload = unload_module, }
static struct ast_custom_function acf_rand
static struct ast_module_infoast_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 93 of file func_rand.c.

static void __unreg_module ( void   )  [static]

Definition at line 93 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 37 of file func_rand.c.

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

00039 {
00040    int min_int, response_int, max_int;
00041    AST_DECLARE_APP_ARGS(args,
00042               AST_APP_ARG(min);
00043               AST_APP_ARG(max);
00044    );
00045 
00046    AST_STANDARD_APP_ARGS(args, parse);
00047 
00048    if (ast_strlen_zero(args.min) || sscanf(args.min, "%d", &min_int) != 1)
00049       min_int = 0;
00050 
00051    if (ast_strlen_zero(args.max) || sscanf(args.max, "%d", &max_int) != 1)
00052       max_int = RAND_MAX;
00053 
00054    if (max_int < min_int) {
00055       int tmp = max_int;
00056 
00057       max_int = min_int;
00058       min_int = tmp;
00059       ast_debug(1, "max<min\n");
00060    }
00061 
00062    response_int = min_int + (ast_random() % (max_int - min_int + 1));
00063    ast_debug(1, "%d was the lucky number in range [%d,%d]\n", response_int, min_int, max_int);
00064    snprintf(buffer, buflen, "%d", response_int);
00065 
00066    return 0;
00067 }

static int load_module ( void   )  [static]

Definition at line 88 of file func_rand.c.

References acf_rand, and ast_custom_function_register.

00089 {
00090    return ast_custom_function_register(&acf_rand);
00091 }

static int unload_module ( void   )  [static]

Definition at line 81 of file func_rand.c.

References acf_rand, and ast_custom_function_unregister().

00082 {
00083    ast_custom_function_unregister(&acf_rand);
00084 
00085    return 0;
00086 }


Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .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 = "a9c98e5d177805051735cb5b0b16b0a0" , .load = load_module, .unload = unload_module, } [static]

Definition at line 93 of file func_rand.c.

struct ast_custom_function acf_rand [static]

Definition at line 69 of file func_rand.c.

Referenced by load_module(), and unload_module().

struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 93 of file func_rand.c.


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