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 = ASTERISK_GPL_KEY , .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 111 of file func_rand.c.

__unreg_module()

static void __unreg_module ( void  )

static

Definition at line 111 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 61 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, and min.

AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM

(

void

)

Definition at line 111 of file func_rand.c.

load_module()

static int load_module ( void  )

static

Definition at line 106 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 99 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 = ASTERISK_GPL_KEY , .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 111 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 93 of file func_rand.c.

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

Referenced by load_module(), and unload_module().

ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 111 of file func_rand.c.