mirror of
https://github.com/php/php-src.git
synced 2025-08-15 13:38:49 +02:00
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
|
|
+----------------------------------------------------------------------+
|
|
| 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 php_random_result generate(void *state)
|
|
{
|
|
php_random_status_state_user *s = state;
|
|
uint64_t result = 0;
|
|
size_t size;
|
|
zval retval;
|
|
zend_string *zstr;
|
|
|
|
zend_call_known_instance_method_with_0_params(s->generate_method, s->object, &retval);
|
|
|
|
if (EG(exception)) {
|
|
return (php_random_result){
|
|
.size = sizeof(uint64_t),
|
|
.result = 0,
|
|
};
|
|
}
|
|
|
|
if (UNEXPECTED(Z_ISREF(retval))) {
|
|
zstr = Z_STR_P(Z_REFVAL(retval));
|
|
} else {
|
|
zstr = Z_STR(retval);
|
|
}
|
|
|
|
/* Store generated size in a state */
|
|
size = ZSTR_LEN(zstr);
|
|
|
|
/* Guard for over 64-bit results */
|
|
if (size > sizeof(uint64_t)) {
|
|
size = sizeof(uint64_t);
|
|
}
|
|
|
|
if (size > 0) {
|
|
/* Endianness safe copy */
|
|
for (size_t i = 0; i < size; i++) {
|
|
result += ((uint64_t) (unsigned char) ZSTR_VAL(zstr)[i]) << (8 * i);
|
|
}
|
|
} else {
|
|
zend_throw_error(random_ce_Random_BrokenRandomEngineError, "A random engine must return a non-empty string");
|
|
zval_ptr_dtor(&retval);
|
|
return (php_random_result){
|
|
.size = sizeof(uint64_t),
|
|
.result = 0,
|
|
};
|
|
}
|
|
|
|
zval_ptr_dtor(&retval);
|
|
|
|
return (php_random_result){
|
|
.size = size,
|
|
.result = result,
|
|
};
|
|
}
|
|
|
|
static zend_long range(void *state, zend_long min, zend_long max)
|
|
{
|
|
return php_random_range((php_random_algo_with_state){
|
|
.algo = &php_random_algo_user,
|
|
.state = state,
|
|
}, min, max);
|
|
}
|
|
|
|
PHPAPI const php_random_algo php_random_algo_user = {
|
|
sizeof(php_random_status_state_user),
|
|
generate,
|
|
range,
|
|
NULL,
|
|
NULL,
|
|
};
|