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)
struct ast_module *	AST_MODULE_SELF_SYM (void)
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 const struct ast_module_info *	ast_module_info = &__mod_info

Detailed Description

Generate Random Number.

Author

Claude Patry cpatr.nosp@m.y@gm.nosp@m.ail.c.nosp@m.om

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

Definition in file func_rand.c.

Function Documentation

__reg_module()

static void __reg_module ( void  )

static

Definition at line 108 of file func_rand.c.

__unreg_module()

static void __unreg_module ( void  )

static

Definition at line 108 of file func_rand.c.

acf_rand_exec()

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

static

Definition at line 58 of file func_rand.c.

{
    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;
}

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

AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM

(

void

)

Definition at line 108 of file func_rand.c.

load_module()

static int load_module ( void  )

static

Definition at line 103 of file func_rand.c.

{
    return ast_custom_function_register(&acf_rand);
}

References acf_rand, and ast_custom_function_register.

unload_module()

static int unload_module ( void  )

static

Definition at line 96 of file func_rand.c.

{
    ast_custom_function_unregister(&acf_rand);
 
    return 0;
}

References acf_rand, and ast_custom_function_unregister().

Variable Documentation

__mod_info

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 108 of file func_rand.c.

acf_rand

struct ast_custom_function acf_rand

static

Initial value:

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

Definition at line 90 of file func_rand.c.

Referenced by load_module(), and unload_module().

ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 108 of file func_rand.c.