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|
/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Go Kudo <zeriyoshi@php.net> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "php.h"
#include "php_random.h"
static uint64_t generate(php_random_status *status)
{
php_random_status_state_user *s = status->state;
uint64_t result = 0;
size_t size;
zval retval;
zend_call_known_instance_method_with_0_params(s->generate_method, s->object, &retval);
if (EG(exception)) {
return 0;
}
/* Store generated size in a state */
size = Z_STRLEN(retval);
/* Guard for over 64-bit results */
if (size > sizeof(uint64_t)) {
size = sizeof(uint64_t);
}
status->last_generated_size = size;
if (size > 0) {
/* Endianness safe copy */
for (size_t i = 0; i < size; i++) {
result += ((uint64_t) (unsigned char) Z_STRVAL(retval)[i]) << (8 * i);
}
} else {
zend_throw_error(random_ce_Random_BrokenRandomEngineError, "A random engine must return a non-empty string");
return 0;
}
zval_ptr_dtor(&retval);
return result;
}
static zend_long range(php_random_status *status, zend_long min, zend_long max)
{
return php_random_range(&php_random_algo_user, status, min, max);
}
const php_random_algo php_random_algo_user = {
0,
sizeof(php_random_status_state_user),
NULL,
generate,
range,
NULL,
NULL,
};
|
