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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. | | |
| +----------------------------------------------------------------------+ | |
| | Authors: Sammy Kaye Powers <me@sammyk.me> | | |
| | Go Kudo <zeriyoshi@php.net> | | |
| | Tim Düsterhus <timwolla@php.net> | | |
| +----------------------------------------------------------------------+ | |
| */ | |
| PHPAPI ZEND_DECLARE_MODULE_GLOBALS(random) | |
| PHPAPI zend_class_entry *random_ce_Random_Engine; | |
| PHPAPI zend_class_entry *random_ce_Random_CryptoSafeEngine; | |
| PHPAPI zend_class_entry *random_ce_Random_Engine_Mt19937; | |
| PHPAPI zend_class_entry *random_ce_Random_Engine_PcgOneseq128XslRr64; | |
| PHPAPI zend_class_entry *random_ce_Random_Engine_Xoshiro256StarStar; | |
| PHPAPI zend_class_entry *random_ce_Random_Engine_Secure; | |
| PHPAPI zend_class_entry *random_ce_Random_Randomizer; | |
| PHPAPI zend_class_entry *random_ce_Random_IntervalBoundary; | |
| PHPAPI zend_class_entry *random_ce_Random_RandomError; | |
| PHPAPI zend_class_entry *random_ce_Random_BrokenRandomEngineError; | |
| PHPAPI zend_class_entry *random_ce_Random_RandomException; | |
| static zend_object_handlers random_engine_mt19937_object_handlers; | |
| static zend_object_handlers random_engine_pcgoneseq128xslrr64_object_handlers; | |
| static zend_object_handlers random_engine_xoshiro256starstar_object_handlers; | |
| static zend_object_handlers random_engine_secure_object_handlers; | |
| static zend_object_handlers random_randomizer_object_handlers; | |
| PHPAPI uint32_t php_random_range32(php_random_algo_with_state engine, uint32_t umax) | |
| { | |
| const php_random_algo *algo = engine.algo; | |
| void *state = engine.state; | |
| uint32_t result; | |
| size_t total_size; | |
| result = 0; | |
| total_size = 0; | |
| do { | |
| php_random_result r = algo->generate(state); | |
| result = result | (((uint32_t) r.result) << (total_size * 8)); | |
| total_size += r.size; | |
| if (EG(exception)) { | |
| return 0; | |
| } | |
| } while (total_size < sizeof(uint32_t)); | |
| /* Special case where no modulus is required */ | |
| if (UNEXPECTED(umax == UINT32_MAX)) { | |
| return result; | |
| } | |
| /* Increment the max so range is inclusive of max */ | |
| umax++; | |
| /* Powers of two are not biased */ | |
| if ((umax & (umax - 1)) == 0) { | |
| return result & (umax - 1); | |
| } | |
| /* Ceiling under which UINT32_MAX % max == 0 */ | |
| uint32_t limit = UINT32_MAX - (UINT32_MAX % umax) - 1; | |
| /* Discard numbers over the limit to avoid modulo bias */ | |
| uint32_t count = 0; | |
| while (UNEXPECTED(result > limit)) { | |
| /* If the requirements cannot be met in a cycles, return fail */ | |
| if (++count > PHP_RANDOM_RANGE_ATTEMPTS) { | |
| zend_throw_error(random_ce_Random_BrokenRandomEngineError, "Failed to generate an acceptable random number in %d attempts", PHP_RANDOM_RANGE_ATTEMPTS); | |
| return 0; | |
| } | |
| result = 0; | |
| total_size = 0; | |
| do { | |
| php_random_result r = algo->generate(state); | |
| result = result | (((uint32_t) r.result) << (total_size * 8)); | |
| total_size += r.size; | |
| if (EG(exception)) { | |
| return 0; | |
| } | |
| } while (total_size < sizeof(uint32_t)); | |
| } | |
| return result % umax; | |
| } | |
| PHPAPI uint64_t php_random_range64(php_random_algo_with_state engine, uint64_t umax) | |
| { | |
| const php_random_algo *algo = engine.algo; | |
| void *state = engine.state; | |
| uint64_t result; | |
| size_t total_size; | |
| result = 0; | |
| total_size = 0; | |
| do { | |
| php_random_result r = algo->generate(state); | |
| result = result | (r.result << (total_size * 8)); | |
| total_size += r.size; | |
| if (EG(exception)) { | |
| return 0; | |
| } | |
| } while (total_size < sizeof(uint64_t)); | |
| /* Special case where no modulus is required */ | |
| if (UNEXPECTED(umax == UINT64_MAX)) { | |
| return result; | |
| } | |
| /* Increment the max so range is inclusive of max */ | |
| umax++; | |
| /* Powers of two are not biased */ | |
| if ((umax & (umax - 1)) == 0) { | |
| return result & (umax - 1); | |
| } | |
| /* Ceiling under which UINT64_MAX % max == 0 */ | |
| uint64_t limit = UINT64_MAX - (UINT64_MAX % umax) - 1; | |
| /* Discard numbers over the limit to avoid modulo bias */ | |
| uint32_t count = 0; | |
| while (UNEXPECTED(result > limit)) { | |
| /* If the requirements cannot be met in a cycles, return fail */ | |
| if (++count > PHP_RANDOM_RANGE_ATTEMPTS) { | |
| zend_throw_error(random_ce_Random_BrokenRandomEngineError, "Failed to generate an acceptable random number in %d attempts", PHP_RANDOM_RANGE_ATTEMPTS); | |
| return 0; | |
| } | |
| result = 0; | |
| total_size = 0; | |
| do { | |
| php_random_result r = algo->generate(state); | |
| result = result | (r.result << (total_size * 8)); | |
| total_size += r.size; | |
| if (EG(exception)) { | |
| return 0; | |
| } | |
| } while (total_size < sizeof(uint64_t)); | |
| } | |
| return result % umax; | |
| } | |
| static zend_object *php_random_engine_mt19937_new(zend_class_entry *ce) | |
| { | |
| return &php_random_engine_common_init(ce, &random_engine_mt19937_object_handlers, &php_random_algo_mt19937)->std; | |
| } | |
| static zend_object *php_random_engine_pcgoneseq128xslrr64_new(zend_class_entry *ce) | |
| { | |
| return &php_random_engine_common_init(ce, &random_engine_pcgoneseq128xslrr64_object_handlers, &php_random_algo_pcgoneseq128xslrr64)->std; | |
| } | |
| static zend_object *php_random_engine_xoshiro256starstar_new(zend_class_entry *ce) | |
| { | |
| return &php_random_engine_common_init(ce, &random_engine_xoshiro256starstar_object_handlers, &php_random_algo_xoshiro256starstar)->std; | |
| } | |
| static zend_object *php_random_engine_secure_new(zend_class_entry *ce) | |
| { | |
| return &php_random_engine_common_init(ce, &random_engine_secure_object_handlers, &php_random_algo_secure)->std; | |
| } | |
| static zend_object *php_random_randomizer_new(zend_class_entry *ce) | |
| { | |
| php_random_randomizer *randomizer = zend_object_alloc(sizeof(php_random_randomizer), ce); | |
| zend_object_std_init(&randomizer->std, ce); | |
| object_properties_init(&randomizer->std, ce); | |
| return &randomizer->std; | |
| } | |
| static void randomizer_free_obj(zend_object *object) { | |
| php_random_randomizer *randomizer = php_random_randomizer_from_obj(object); | |
| if (randomizer->is_userland_algo) { | |
| php_random_status_free(randomizer->engine.state, false); | |
| } | |
| zend_object_std_dtor(&randomizer->std); | |
| } | |
| PHPAPI void *php_random_status_alloc(const php_random_algo *algo, const bool persistent) | |
| { | |
| return algo->state_size > 0 ? pecalloc(1, algo->state_size, persistent) : NULL; | |
| } | |
| PHPAPI void *php_random_status_copy(const php_random_algo *algo, void *old_status, void *new_status) | |
| { | |
| return memcpy(new_status, old_status, algo->state_size); | |
| } | |
| PHPAPI void php_random_status_free(void *status, const bool persistent) | |
| { | |
| pefree(status, persistent); | |
| } | |
| PHPAPI php_random_engine *php_random_engine_common_init(zend_class_entry *ce, zend_object_handlers *handlers, const php_random_algo *algo) | |
| { | |
| php_random_engine *engine = zend_object_alloc(sizeof(php_random_engine), ce); | |
| zend_object_std_init(&engine->std, ce); | |
| object_properties_init(&engine->std, ce); | |
| engine->engine = (php_random_algo_with_state){ | |
| .algo = algo, | |
| .state = php_random_status_alloc(algo, false) | |
| }; | |
| engine->std.handlers = handlers; | |
| return engine; | |
| } | |
| PHPAPI void php_random_engine_common_free_object(zend_object *object) | |
| { | |
| php_random_engine *engine = php_random_engine_from_obj(object); | |
| php_random_status_free(engine->engine.state, false); | |
| zend_object_std_dtor(object); | |
| } | |
| PHPAPI zend_object *php_random_engine_common_clone_object(zend_object *object) | |
| { | |
| php_random_engine *old_engine = php_random_engine_from_obj(object); | |
| php_random_engine *new_engine = php_random_engine_from_obj(old_engine->std.ce->create_object(old_engine->std.ce)); | |
| new_engine->engine.algo = old_engine->engine.algo; | |
| if (old_engine->engine.state) { | |
| new_engine->engine.state = php_random_status_copy(old_engine->engine.algo, old_engine->engine.state, new_engine->engine.state); | |
| } | |
| zend_objects_clone_members(&new_engine->std, &old_engine->std); | |
| return &new_engine->std; | |
| } | |
| /* {{{ php_random_range */ | |
| PHPAPI zend_long php_random_range(php_random_algo_with_state engine, zend_long min, zend_long max) | |
| { | |
| zend_ulong umax = (zend_ulong) max - (zend_ulong) min; | |
| if (umax > UINT32_MAX) { | |
| return (zend_long) (php_random_range64(engine, umax) + min); | |
| } | |
| return (zend_long) (php_random_range32(engine, umax) + min); | |
| } | |
| /* }}} */ | |
| /* {{{ php_random_default_algo */ | |
| PHPAPI const php_random_algo *php_random_default_algo(void) | |
| { | |
| return &php_random_algo_mt19937; | |
| } | |
| /* }}} */ | |
| /* {{{ php_random_default_status */ | |
| PHPAPI void *php_random_default_status(void) | |
| { | |
| php_random_status_state_mt19937 *state = &RANDOM_G(mt19937); | |
| if (!RANDOM_G(mt19937_seeded)) { | |
| state->mode = MT_RAND_MT19937; | |
| php_random_mt19937_seed_default(state); | |
| RANDOM_G(mt19937_seeded) = true; | |
| } | |
| return state; | |
| } | |
| /* }}} */ | |
| /* this is read-only, so it's ok */ | |
| ZEND_SET_ALIGNED(16, static const char hexconvtab[]) = "0123456789abcdef"; | |
| /* {{{ php_random_bin2hex_le */ | |
| /* stolen from standard/string.c */ | |
| PHPAPI zend_string *php_random_bin2hex_le(const void *ptr, const size_t len) | |
| { | |
| zend_string *str; | |
| size_t i; | |
| str = zend_string_safe_alloc(len, 2 * sizeof(char), 0, 0); | |
| i = 0; | |
| /* force little endian */ | |
| for (size_t h = len; 0 < h; h--) { | |
| size_t j = h-1; | |
| for (size_t j = 0; j < len; j++) { | |
| ZSTR_VAL(str)[i++] = hexconvtab[((unsigned char *) ptr)[j] >> 4]; | |
| ZSTR_VAL(str)[i++] = hexconvtab[((unsigned char *) ptr)[j] & 15]; | |
| } | |
| ZSTR_VAL(str)[i] = '\0'; | |
| return str; | |
| } | |
| /* }}} */ | |
| /* {{{ php_random_hex2bin_le */ | |
| /* stolen from standard/string.c */ | |
| PHPAPI bool php_random_hex2bin_le(zend_string *hexstr, void *dest) | |
| { | |
| size_t len = hexstr->len >> 1; | |
| unsigned char *str = (unsigned char *) hexstr->val, c, l, d; | |
| unsigned char *ptr = (unsigned char *) dest; | |
| int is_letter, i = 0; | |
| /* force little endian */ | |
| for (size_t h = len; 0 < h; h--) { | |
| size_t j = h-1; | |
| for (size_t j = 0; j < len; j++) { | |
| c = str[i++]; | |
| l = c & ~0x20; | |
| is_letter = ((uint32_t) ((l - 'A') ^ (l - 'F' - 1))) >> (8 * sizeof(uint32_t) - 1); | |
| /* basically (c >= '0' && c <= '9') || (l >= 'A' && l <= 'F') */ | |
| if (EXPECTED((((c ^ '0') - 10) >> (8 * sizeof(uint32_t) - 1)) | is_letter)) { | |
| d = (l - 0x10 - 0x27 * is_letter) << 4; | |
| } else { | |
| return false; | |
| } | |
| c = str[i++]; | |
| l = c & ~0x20; | |
| is_letter = ((uint32_t) ((l - 'A') ^ (l - 'F' - 1))) >> (8 * sizeof(uint32_t) - 1); | |
| if (EXPECTED((((c ^ '0') - 10) >> (8 * sizeof(uint32_t) - 1)) | is_letter)) { | |
| d |= l - 0x10 - 0x27 * is_letter; | |
| } else { | |
| return false; | |
| } | |
| ptr[j] = d; | |
| } | |
| return true; | |
| } | |
| /* }}} */ | |
| /* {{{ php_combined_lcg */ | |
| PHPAPI double php_combined_lcg(void) | |
| { | |
| int32_t *state = RANDOM_G(combined_lcg); | |
| if (!RANDOM_G(combined_lcg_seeded)) { | |
| uint64_t seed = 0; | |
| if (php_random_bytes_silent(&seed, sizeof(seed)) == FAILURE) { | |
| seed = php_random_generate_fallback_seed(); | |
| } | |
| state[0] = seed & 0xffffffffU; | |
| state[1] = seed >> 32; | |
| RANDOM_G(combined_lcg_seeded) = true; | |
| } | |
| /* | |
| * combinedLCG() returns a pseudo random number in the range of (0, 1). | |
| * The function combines two CGs with periods of | |
| * 2^31 - 85 - 1 and 2^31 - 249 - 1. The period of this function | |
| * is equal to the product of the two underlying periods, divided | |
| * by factors shared by the underlying periods, i.e. 2.3 * 10^18. | |
| * | |
| * see: https://library.sciencemadness.org/lanl1_a/lib-www/numerica/f7-1.pdf | |
| */ | |
| int32_t q, z; | |
| /* state[0] = (state[0] * 40014) % 2147483563; */ | |
| PHP_COMBINED_LCG_MODMULT(53668, 40014, 12211, 2147483563L, state[0]); | |
| /* state[1] = (state[1] * 40692) % 2147483399; */ | |
| PHP_COMBINED_LCG_MODMULT(52774, 40692, 3791, 2147483399L, state[1]); | |
| z = state[0] - state[1]; | |
| if (z < 1) { | |
| z += 2147483562; | |
| } | |
| return ((uint64_t)z) * 4.656613e-10; | |
| } | |
| /* }}} */ | |
| /* {{{ php_mt_srand */ | |
| PHPAPI void php_mt_srand(uint32_t seed) | |
| { | |
| php_random_mt19937_seed32(php_random_default_status(), seed); | |
| } | |
| /* }}} */ | |
| /* {{{ php_mt_rand */ | |
| PHPAPI uint32_t php_mt_rand(void) | |
| { | |
| return (uint32_t) php_random_algo_mt19937.generate(php_random_default_status()).result; | |
| } | |
| /* }}} */ | |
| /* {{{ php_mt_rand_range */ | |
| PHPAPI zend_long php_mt_rand_range(zend_long min, zend_long max) | |
| { | |
| return php_random_algo_mt19937.range(php_random_default_status(), min, max); | |
| } | |
| /* }}} */ | |
| /* {{{ php_mt_rand_common | |
| * rand() allows min > max, mt_rand does not */ | |
| PHPAPI zend_long php_mt_rand_common(zend_long min, zend_long max) | |
| { | |
| php_random_status_state_mt19937 *s = php_random_default_status(); | |
| if (s->mode == MT_RAND_MT19937) { | |
| return php_mt_rand_range(min, max); | |
| } | |
| uint64_t r = php_random_algo_mt19937.generate(php_random_default_status()).result >> 1; | |
| /* This is an inlined version of the RAND_RANGE_BADSCALING macro that does not invoke UB when encountering | |
| * (max - min) > ZEND_LONG_MAX. | |
| */ | |
| zend_ulong offset = (double) ( (double) max - min + 1.0) * (r / (PHP_MT_RAND_MAX + 1.0)); | |
| return (zend_long) (offset + min); | |
| } | |
| /* }}} */ | |
| /* {{{ Returns a value from the combined linear congruential generator */ | |
| PHP_FUNCTION(lcg_value) | |
| { | |
| ZEND_PARSE_PARAMETERS_NONE(); | |
| RETURN_DOUBLE(php_combined_lcg()); | |
| } | |
| /* }}} */ | |
| /* {{{ Seeds Mersenne Twister random number generator */ | |
| PHP_FUNCTION(mt_srand) | |
| { | |
| zend_long seed = 0; | |
| bool seed_is_null = true; | |
| zend_long mode = MT_RAND_MT19937; | |
| php_random_status_state_mt19937 *state = &RANDOM_G(mt19937); | |
| ZEND_PARSE_PARAMETERS_START(0, 2) | |
| Z_PARAM_OPTIONAL | |
| Z_PARAM_LONG_OR_NULL(seed, seed_is_null) | |
| Z_PARAM_LONG(mode) | |
| ZEND_PARSE_PARAMETERS_END(); | |
| switch (mode) { | |
| case MT_RAND_PHP: | |
| state->mode = MT_RAND_PHP; | |
| zend_error(E_DEPRECATED, "The MT_RAND_PHP variant of Mt19937 is deprecated"); | |
| break; | |
| default: | |
| state->mode = MT_RAND_MT19937; | |
| } | |
| if (seed_is_null) { | |
| php_random_mt19937_seed_default(state); | |
| } else { | |
| php_random_mt19937_seed32(state, (uint64_t) seed); | |
| } | |
| RANDOM_G(mt19937_seeded) = true; | |
| } | |
| /* }}} */ | |
| /* {{{ Returns a random number from Mersenne Twister */ | |
| PHP_FUNCTION(mt_rand) | |
| { | |
| zend_long min, max; | |
| int argc = ZEND_NUM_ARGS(); | |
| if (argc == 0) { | |
| /* genrand_int31 in mt19937ar.c performs a right shift */ | |
| RETURN_LONG(php_mt_rand() >> 1); | |
| } | |
| ZEND_PARSE_PARAMETERS_START(2, 2) | |
| Z_PARAM_LONG(min) | |
| Z_PARAM_LONG(max) | |
| ZEND_PARSE_PARAMETERS_END(); | |
| if (UNEXPECTED(max < min)) { | |
| zend_argument_value_error(2, "must be greater than or equal to argument #1 ($min)"); | |
| RETURN_THROWS(); | |
| } | |
| RETURN_LONG(php_mt_rand_common(min, max)); | |
| } | |
| /* }}} */ | |
| /* {{{ Returns the maximum value a random number from Mersenne Twister can have */ | |
| PHP_FUNCTION(mt_getrandmax) | |
| { | |
| ZEND_PARSE_PARAMETERS_NONE(); | |
| /* | |
| * Melo: it could be 2^^32, but we only use 2^^31 to maintain | |
| * compatibility with the previous php_rand | |
| */ | |
| RETURN_LONG(PHP_MT_RAND_MAX); /* 2^^31 */ | |
| } | |
| /* }}} */ | |
| /* {{{ Returns a random number from Mersenne Twister */ | |
| PHP_FUNCTION(rand) | |
| { | |
| zend_long min, max; | |
| int argc = ZEND_NUM_ARGS(); | |
| if (argc == 0) { | |
| /* genrand_int31 in mt19937ar.c performs a right shift */ | |
| RETURN_LONG(php_mt_rand() >> 1); | |
| } | |
| ZEND_PARSE_PARAMETERS_START(2, 2) | |
| Z_PARAM_LONG(min) | |
| Z_PARAM_LONG(max) | |
| ZEND_PARSE_PARAMETERS_END(); | |
| if (max < min) { | |
| RETURN_LONG(php_mt_rand_common(max, min)); | |
| } | |
| RETURN_LONG(php_mt_rand_common(min, max)); | |
| } | |
| /* }}} */ | |
| /* {{{ Return an arbitrary length of pseudo-random bytes as binary string */ | |
| PHP_FUNCTION(random_bytes) | |
| { | |
| zend_long size; | |
| zend_string *bytes; | |
| ZEND_PARSE_PARAMETERS_START(1, 1) | |
| Z_PARAM_LONG(size) | |
| ZEND_PARSE_PARAMETERS_END(); | |
| if (size < 1) { | |
| zend_argument_value_error(1, "must be greater than 0"); | |
| RETURN_THROWS(); | |
| } | |
| bytes = zend_string_alloc(size, 0); | |
| if (php_random_bytes_throw(ZSTR_VAL(bytes), size) == FAILURE) { | |
| zend_string_release_ex(bytes, 0); | |
| RETURN_THROWS(); | |
| } | |
| ZSTR_VAL(bytes)[size] = '\0'; | |
| RETURN_STR(bytes); | |
| } | |
| /* }}} */ | |
| /* {{{ Return an arbitrary pseudo-random integer */ | |
| PHP_FUNCTION(random_int) | |
| { | |
| zend_long min, max, result; | |
| ZEND_PARSE_PARAMETERS_START(2, 2) | |
| Z_PARAM_LONG(min) | |
| Z_PARAM_LONG(max) | |
| ZEND_PARSE_PARAMETERS_END(); | |
| if (min > max) { | |
| zend_argument_value_error(1, "must be less than or equal to argument #2 ($max)"); | |
| RETURN_THROWS(); | |
| } | |
| if (php_random_int_throw(min, max, &result) == FAILURE) { | |
| RETURN_THROWS(); | |
| } | |
| RETURN_LONG(result); | |
| } | |
| /* }}} */ | |
| static inline void fallback_seed_add(PHP_SHA1_CTX *c, void *p, size_t l){ | |
| /* Wrapper around PHP_SHA1Update allowing to pass | |
| * arbitrary pointers without (unsigned char*) casts | |
| * everywhere. | |
| */ | |
| PHP_SHA1Update(c, p, l); | |
| } | |
| PHPAPI uint64_t php_random_generate_fallback_seed_ex(php_random_fallback_seed_state *state) | |
| { | |
| /* Mix various values using SHA-1 as a PRF to obtain as | |
| * much entropy as possible, hopefully generating an | |
| * unpredictable and independent uint64_t. Nevertheless, | |
| * the output of this function MUST NOT be treated as | |
| * being cryptographically safe. | |
| */ | |
| PHP_SHA1_CTX c; | |
| struct timeval tv; | |
| void *pointer; | |
| pid_t pid; | |
| THREAD_T tid; | |
| char buf[64 + 1]; | |
| PHP_SHA1Init(&c); | |
| if (!state->initialized) { | |
| /* Current time. */ | |
| gettimeofday(&tv, NULL); | |
| fallback_seed_add(&c, &tv, sizeof(tv)); | |
| /* Various PIDs. */ | |
| pid = getpid(); | |
| fallback_seed_add(&c, &pid, sizeof(pid)); | |
| pid = getppid(); | |
| fallback_seed_add(&c, &pid, sizeof(pid)); | |
| tid = tsrm_thread_id(); | |
| fallback_seed_add(&c, &tid, sizeof(tid)); | |
| /* Pointer values to benefit from ASLR. */ | |
| pointer = &state; | |
| fallback_seed_add(&c, &pointer, sizeof(pointer)); | |
| pointer = &c; | |
| fallback_seed_add(&c, &pointer, sizeof(pointer)); | |
| /* Updated time. */ | |
| gettimeofday(&tv, NULL); | |
| fallback_seed_add(&c, &tv, sizeof(tv)); | |
| /* Hostname. */ | |
| memset(buf, 0, sizeof(buf)); | |
| if (gethostname(buf, sizeof(buf) - 1) == 0) { | |
| fallback_seed_add(&c, buf, strlen(buf)); | |
| } | |
| /* CSPRNG. */ | |
| if (php_random_bytes_silent(buf, 16) == SUCCESS) { | |
| fallback_seed_add(&c, buf, 16); | |
| } | |
| /* Updated time. */ | |
| gettimeofday(&tv, NULL); | |
| fallback_seed_add(&c, &tv, sizeof(tv)); | |
| } else { | |
| /* Current time. */ | |
| gettimeofday(&tv, NULL); | |
| fallback_seed_add(&c, &tv, sizeof(tv)); | |
| /* Previous state. */ | |
| fallback_seed_add(&c, state->seed, 20); | |
| } | |
| PHP_SHA1Final(state->seed, &c); | |
| state->initialized = true; | |
| uint64_t result = 0; | |
| for (size_t i = 0; i < sizeof(result); i++) { | |
| result = result | (((uint64_t)state->seed[i]) << (i * 8)); | |
| } | |
| return result; | |
| } | |
| PHPAPI uint64_t php_random_generate_fallback_seed(void) | |
| { | |
| return php_random_generate_fallback_seed_ex(&RANDOM_G(fallback_seed_state)); | |
| } | |
| /* {{{ PHP_GINIT_FUNCTION */ | |
| static PHP_GINIT_FUNCTION(random) | |
| { | |
| random_globals->fallback_seed_state.initialized = false; | |
| } | |
| /* }}} */ | |
| /* {{{ PHP_MINIT_FUNCTION */ | |
| PHP_MINIT_FUNCTION(random) | |
| { | |
| /* Random\Engine */ | |
| random_ce_Random_Engine = register_class_Random_Engine(); | |
| /* Random\CryptoSafeEngine */ | |
| random_ce_Random_CryptoSafeEngine = register_class_Random_CryptoSafeEngine(random_ce_Random_Engine); | |
| /* Random\RandomError */ | |
| random_ce_Random_RandomError = register_class_Random_RandomError(zend_ce_error); | |
| /* Random\BrokenRandomEngineError */ | |
| random_ce_Random_BrokenRandomEngineError = register_class_Random_BrokenRandomEngineError(random_ce_Random_RandomError); | |
| /* Random\RandomException */ | |
| random_ce_Random_RandomException = register_class_Random_RandomException(zend_ce_exception); | |
| /* Random\Engine\Mt19937 */ | |
| random_ce_Random_Engine_Mt19937 = register_class_Random_Engine_Mt19937(random_ce_Random_Engine); | |
| random_ce_Random_Engine_Mt19937->create_object = php_random_engine_mt19937_new; | |
| memcpy(&random_engine_mt19937_object_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers)); | |
| random_engine_mt19937_object_handlers.offset = XtOffsetOf(php_random_engine, std); | |
| random_engine_mt19937_object_handlers.free_obj = php_random_engine_common_free_object; | |
| random_engine_mt19937_object_handlers.clone_obj = php_random_engine_common_clone_object; | |
| /* Random\Engine\PcgOnseq128XslRr64 */ | |
| random_ce_Random_Engine_PcgOneseq128XslRr64 = register_class_Random_Engine_PcgOneseq128XslRr64(random_ce_Random_Engine); | |
| random_ce_Random_Engine_PcgOneseq128XslRr64->create_object = php_random_engine_pcgoneseq128xslrr64_new; | |
| memcpy(&random_engine_pcgoneseq128xslrr64_object_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers)); | |
| random_engine_pcgoneseq128xslrr64_object_handlers.offset = XtOffsetOf(php_random_engine, std); | |
| random_engine_pcgoneseq128xslrr64_object_handlers.free_obj = php_random_engine_common_free_object; | |
| random_engine_pcgoneseq128xslrr64_object_handlers.clone_obj = php_random_engine_common_clone_object; | |
| /* Random\Engine\Xoshiro256StarStar */ | |
| random_ce_Random_Engine_Xoshiro256StarStar = register_class_Random_Engine_Xoshiro256StarStar(random_ce_Random_Engine); | |
| random_ce_Random_Engine_Xoshiro256StarStar->create_object = php_random_engine_xoshiro256starstar_new; | |
| memcpy(&random_engine_xoshiro256starstar_object_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers)); | |
| random_engine_xoshiro256starstar_object_handlers.offset = XtOffsetOf(php_random_engine, std); | |
| random_engine_xoshiro256starstar_object_handlers.free_obj = php_random_engine_common_free_object; | |
| random_engine_xoshiro256starstar_object_handlers.clone_obj = php_random_engine_common_clone_object; | |
| /* Random\Engine\Secure */ | |
| random_ce_Random_Engine_Secure = register_class_Random_Engine_Secure(random_ce_Random_CryptoSafeEngine); | |
| random_ce_Random_Engine_Secure->create_object = php_random_engine_secure_new; | |
| memcpy(&random_engine_secure_object_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers)); | |
| random_engine_secure_object_handlers.offset = XtOffsetOf(php_random_engine, std); | |
| random_engine_secure_object_handlers.free_obj = php_random_engine_common_free_object; | |
| random_engine_secure_object_handlers.clone_obj = NULL; | |
| /* Random\Randomizer */ | |
| random_ce_Random_Randomizer = register_class_Random_Randomizer(); | |
| random_ce_Random_Randomizer->create_object = php_random_randomizer_new; | |
| random_ce_Random_Randomizer->default_object_handlers = &random_randomizer_object_handlers; | |
| memcpy(&random_randomizer_object_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers)); | |
| random_randomizer_object_handlers.offset = XtOffsetOf(php_random_randomizer, std); | |
| random_randomizer_object_handlers.free_obj = randomizer_free_obj; | |
| random_randomizer_object_handlers.clone_obj = NULL; | |
| /* Random\IntervalBoundary */ | |
| random_ce_Random_IntervalBoundary = register_class_Random_IntervalBoundary(); | |
| register_random_symbols(module_number); | |
| return SUCCESS; | |
| } | |
| /* }}} */ | |
| /* {{{ PHP_MSHUTDOWN_FUNCTION */ | |
| PHP_MSHUTDOWN_FUNCTION(random) | |
| { | |
| php_random_csprng_shutdown(); | |
| return SUCCESS; | |
| } | |
| /* }}} */ | |
| /* {{{ PHP_RINIT_FUNCTION */ | |
| PHP_RINIT_FUNCTION(random) | |
| { | |
| RANDOM_G(combined_lcg_seeded) = false; | |
| RANDOM_G(mt19937_seeded) = false; | |
| return SUCCESS; | |
| } | |
| /* }}} */ | |
| /* {{{ random_module_entry */ | |
| zend_module_entry random_module_entry = { | |
| STANDARD_MODULE_HEADER, | |
| "random", /* Extension name */ | |
| ext_functions, /* zend_function_entry */ | |
| PHP_MINIT(random), /* PHP_MINIT - Module initialization */ | |
| PHP_MSHUTDOWN(random), /* PHP_MSHUTDOWN - Module shutdown */ | |
| PHP_RINIT(random), /* PHP_RINIT - Request initialization */ | |
| NULL, /* PHP_RSHUTDOWN - Request shutdown */ | |
| NULL, /* PHP_MINFO - Module info */ | |
| PHP_VERSION, /* Version */ | |
| PHP_MODULE_GLOBALS(random), /* ZTS Module globals */ | |
| PHP_GINIT(random), /* PHP_GINIT - Global initialization */ | |
| NULL, /* PHP_GSHUTDOWN - Global shutdown */ | |
| NULL, /* Post deactivate */ | |
| STANDARD_MODULE_PROPERTIES_EX | |
| }; | |
| /* }}} */ | |