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| #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); |
| } |
|
|
| |
| size = ZSTR_LEN(zstr); |
|
|
| |
| if (size > sizeof(uint64_t)) { |
| size = sizeof(uint64_t); |
| } |
|
|
| if (size > 0) { |
| |
| 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, |
| }; |
|
|
