Mon Jun 27 16:51:14 2011

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_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 = "8586c2a7d357cb591cc3a6607a8f62d1" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, }
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 105 of file func_rand.c.

static void __unreg_module ( void   )  [static]

Definition at line 105 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 55 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().

00057 {
00058    int min_int, response_int, max_int;
00059    AST_DECLARE_APP_ARGS(args,
00060               AST_APP_ARG(min);
00061               AST_APP_ARG(max);
00062    );
00063 
00064    AST_STANDARD_APP_ARGS(args, parse);
00065 
00066    if (ast_strlen_zero(args.min) || sscanf(args.min, "%30d", &min_int) != 1)
00067       min_int = 0;
00068 
00069    if (ast_strlen_zero(args.max) || sscanf(args.max, "%30d", &max_int) != 1)
00070       max_int = RAND_MAX;
00071 
00072    if (max_int < min_int) {
00073       int tmp = max_int;
00074 
00075       max_int = min_int;
00076       min_int = tmp;
00077       ast_debug(1, "max<min\n");
00078    }
00079 
00080    response_int = min_int + (ast_random() % (max_int - min_int + 1));
00081    ast_debug(1, "%d was the lucky number in range [%d,%d]\n", response_int, min_int, max_int);
00082    snprintf(buffer, buflen, "%d", response_int);
00083 
00084    return 0;
00085 }

static int load_module ( void   )  [static]

Definition at line 100 of file func_rand.c.

References acf_rand, and ast_custom_function_register.

00101 {
00102    return ast_custom_function_register(&acf_rand);
00103 }

static int unload_module ( void   )  [static]

Definition at line 93 of file func_rand.c.

References acf_rand, and ast_custom_function_unregister().

00094 {
00095    ast_custom_function_unregister(&acf_rand);
00096 
00097    return 0;
00098 }


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 = "8586c2a7d357cb591cc3a6607a8f62d1" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static]

Definition at line 105 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 87 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 105 of file func_rand.c.


Generated on Mon Jun 27 16:51:14 2011 for Asterisk - The Open Source Telephony Project by  doxygen 1.4.7