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, .support_level = AST_MODULE_SUPPORT_CORE, }
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 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, ast_strlen_zero, max, min, and tmp().

00061 {
00062    int min_int, response_int, max_int;
00063    AST_DECLARE_APP_ARGS(args,
00064               AST_APP_ARG(min);
00065               AST_APP_ARG(max);
00066    );
00067 
00068    AST_STANDARD_APP_ARGS(args, parse);
00069 
00070    if (ast_strlen_zero(args.min) || sscanf(args.min, "%30d", &min_int) != 1)
00071       min_int = 0;
00072 
00073    if (ast_strlen_zero(args.max) || sscanf(args.max, "%30d", &max_int) != 1)
00074       max_int = RAND_MAX;
00075 
00076    if (max_int < min_int) {
00077       int tmp = max_int;
00078 
00079       max_int = min_int;
00080       min_int = tmp;
00081       ast_debug(1, "max<min\n");
00082    }
00083 
00084    response_int = min_int + (ast_random() % (max_int - min_int + 1));
00085    ast_debug(1, "%d was the lucky number in range [%d,%d]\n", response_int, min_int, max_int);
00086    snprintf(buffer, buflen, "%d", response_int);
00087 
00088    return 0;
00089 }

static int load_module ( void   )  [static]

Definition at line 104 of file func_rand.c.

References ast_custom_function_register.

00105 {
00106    return ast_custom_function_register(&acf_rand);
00107 }

static int unload_module ( void   )  [static]

Definition at line 97 of file func_rand.c.

References ast_custom_function_unregister().

00098 {
00099    ast_custom_function_unregister(&acf_rand);
00100 
00101    return 0;
00102 }


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, .support_level = AST_MODULE_SUPPORT_CORE, } [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.

Definition at line 109 of file func_rand.c.


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