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php_random.h

/*
   +----------------------------------------------------------------------+
   | 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: Rasmus Lerdorf <rasmus@php.net>                             |
   |          Zeev Suraski <zeev@php.net>                                 |
   |          Sascha Schumann <sascha@schumann.cx>                        |
   |          Pedro Melo <melo@ip.pt>                                     |
   |          Sterling Hughes <sterling@php.net>                          |
   |          Sammy Kaye Powers <me@sammyk.me>                            |
   |          Go Kudo <zeriyoshi@php.net>                                 |
   |                                                                      |
   | Based on code from: Richard J. Wagner <rjwagner@writeme.com>         |
   |                     Makoto Matsumoto <matumoto@math.keio.ac.jp>      |
   |                     Takuji Nishimura                                 |
   |                     Shawn Cokus <Cokus@math.washington.edu>          |
   |                     David Blackman                                   |
   |                     Sebastiano Vigna <vigna@acm.org>                 |
   |                     Melissa O'Neill <oneill@pcg-random.org>          |
   +----------------------------------------------------------------------+
*/

#ifndef PHP_RANDOM_H
# define PHP_RANDOM_H

# include "php.h"
# include "php_random_csprng.h"
# include "php_random_uint128.h"

PHPAPI double php_combined_lcg(void);

typedef struct _php_random_fallback_seed_state php_random_fallback_seed_state;

PHPAPI uint64_t php_random_generate_fallback_seed(void);
PHPAPI uint64_t php_random_generate_fallback_seed_ex(php_random_fallback_seed_state *state);

static inline zend_long GENERATE_SEED(void)
{
	return (zend_long)php_random_generate_fallback_seed();
}

# define PHP_MT_RAND_MAX ((zend_long) (0x7FFFFFFF)) /* (1<<31) - 1 */

enum php_random_mt19937_mode {
	MT_RAND_MT19937 = 0,
	MT_RAND_PHP = 1,
};

#define PHP_RANDOM_RANGE_ATTEMPTS (50)

PHPAPI void php_mt_srand(uint32_t seed);
PHPAPI uint32_t php_mt_rand(void);
PHPAPI zend_long php_mt_rand_range(zend_long min, zend_long max);
PHPAPI zend_long php_mt_rand_common(zend_long min, zend_long max);

typedef struct _php_random_status_state_mt19937 {
	uint32_t count;
	enum php_random_mt19937_mode mode;
	uint32_t state[624];
} php_random_status_state_mt19937;

typedef struct _php_random_status_state_pcgoneseq128xslrr64 {
	php_random_uint128_t state;
} php_random_status_state_pcgoneseq128xslrr64;

typedef struct _php_random_status_state_xoshiro256starstar {
	uint64_t state[4];
} php_random_status_state_xoshiro256starstar;

typedef struct _php_random_status_state_user {
	zend_object *object;
	zend_function *generate_method;
} php_random_status_state_user;

typedef struct _php_random_result {
	uint64_t result;
	size_t size;
} php_random_result;

typedef struct _php_random_algo {
	const size_t state_size;
	php_random_result (*generate)(void *state);
	zend_long (*range)(void *state, zend_long min, zend_long max);
	bool (*serialize)(void *state, HashTable *data);
	bool (*unserialize)(void *state, HashTable *data);
} php_random_algo;

typedef struct _php_random_algo_with_state {
	const php_random_algo *algo;
	void *state;
} php_random_algo_with_state;

typedef struct _php_random_fallback_seed_state {
	bool initialized;
	unsigned char seed[20];
} php_random_fallback_seed_state;

extern PHPAPI const php_random_algo php_random_algo_mt19937;
extern PHPAPI const php_random_algo php_random_algo_pcgoneseq128xslrr64;
extern PHPAPI const php_random_algo php_random_algo_xoshiro256starstar;
extern PHPAPI const php_random_algo php_random_algo_secure;
extern PHPAPI const php_random_algo php_random_algo_user;

typedef struct _php_random_engine {
	php_random_algo_with_state engine;
	zend_object std;
} php_random_engine;

typedef struct _php_random_randomizer {
	php_random_algo_with_state engine;
	bool is_userland_algo;
	zend_object std;
} php_random_randomizer;

extern PHPAPI zend_class_entry *random_ce_Random_Engine;
extern PHPAPI zend_class_entry *random_ce_Random_CryptoSafeEngine;

extern PHPAPI zend_class_entry *random_ce_Random_RandomError;
extern PHPAPI zend_class_entry *random_ce_Random_BrokenRandomEngineError;
extern PHPAPI zend_class_entry *random_ce_Random_RandomException;

extern PHPAPI zend_class_entry *random_ce_Random_Engine_PcgOneseq128XslRr64;
extern PHPAPI zend_class_entry *random_ce_Random_Engine_Mt19937;
extern PHPAPI zend_class_entry *random_ce_Random_Engine_Xoshiro256StarStar;
extern PHPAPI zend_class_entry *random_ce_Random_Engine_Secure;

extern PHPAPI zend_class_entry *random_ce_Random_Randomizer;

extern PHPAPI zend_class_entry *random_ce_Random_IntervalBoundary;

static inline php_random_engine *php_random_engine_from_obj(zend_object *object) {
	return (php_random_engine *)((char *)(object) - XtOffsetOf(php_random_engine, std));
}

static inline php_random_randomizer *php_random_randomizer_from_obj(zend_object *object) {
	return (php_random_randomizer *)((char *)(object) - XtOffsetOf(php_random_randomizer, std));
}

# define Z_RANDOM_ENGINE_P(zval) php_random_engine_from_obj(Z_OBJ_P(zval))

# define Z_RANDOM_RANDOMIZER_P(zval) php_random_randomizer_from_obj(Z_OBJ_P(zval));

PHPAPI void *php_random_status_alloc(const php_random_algo *algo, const bool persistent);
PHPAPI void *php_random_status_copy(const php_random_algo *algo, void *old_status, void *new_status);
PHPAPI void php_random_status_free(void *status, const bool persistent);
PHPAPI php_random_engine *php_random_engine_common_init(zend_class_entry *ce, zend_object_handlers *handlers, const php_random_algo *algo);
PHPAPI void php_random_engine_common_free_object(zend_object *object);
PHPAPI zend_object *php_random_engine_common_clone_object(zend_object *object);
PHPAPI uint32_t php_random_range32(php_random_algo_with_state engine, uint32_t umax);
PHPAPI uint64_t php_random_range64(php_random_algo_with_state engine, uint64_t umax);
PHPAPI zend_long php_random_range(php_random_algo_with_state engine, zend_long min, zend_long max);
PHPAPI const php_random_algo *php_random_default_algo(void);
PHPAPI void *php_random_default_status(void);

static inline php_random_algo_with_state php_random_default_engine(void)
{
	php_random_algo_with_state raws;
	raws.algo = php_random_default_algo();
	raws.state = php_random_default_status();
	return raws;
}

PHPAPI zend_string *php_random_bin2hex_le(const void *ptr, const size_t len);
PHPAPI bool php_random_hex2bin_le(zend_string *hexstr, void *dest);

PHPAPI void php_random_mt19937_seed32(php_random_status_state_mt19937 *state, uint32_t seed);
PHPAPI void php_random_mt19937_seed_default(php_random_status_state_mt19937 *state);

PHPAPI void php_random_pcgoneseq128xslrr64_seed128(php_random_status_state_pcgoneseq128xslrr64 *s, php_random_uint128_t seed);
PHPAPI void php_random_pcgoneseq128xslrr64_advance(php_random_status_state_pcgoneseq128xslrr64 *state, uint64_t advance);

PHPAPI void php_random_xoshiro256starstar_seed64(php_random_status_state_xoshiro256starstar *state, uint64_t seed);
PHPAPI void php_random_xoshiro256starstar_seed256(php_random_status_state_xoshiro256starstar *state, uint64_t s0, uint64_t s1, uint64_t s2, uint64_t s3);
PHPAPI void php_random_xoshiro256starstar_jump(php_random_status_state_xoshiro256starstar *state);
PHPAPI void php_random_xoshiro256starstar_jump_long(php_random_status_state_xoshiro256starstar *state);

PHPAPI double php_random_gammasection_closed_open(php_random_algo_with_state engine, double min, double max);
PHPAPI double php_random_gammasection_closed_closed(php_random_algo_with_state engine, double min, double max);
PHPAPI double php_random_gammasection_open_closed(php_random_algo_with_state engine, double min, double max);
PHPAPI double php_random_gammasection_open_open(php_random_algo_with_state engine, double min, double max);

extern zend_module_entry random_module_entry;
# define phpext_random_ptr &random_module_entry

PHP_MINIT_FUNCTION(random);
PHP_MSHUTDOWN_FUNCTION(random);
PHP_RINIT_FUNCTION(random);

ZEND_BEGIN_MODULE_GLOBALS(random)
	bool combined_lcg_seeded;
	bool mt19937_seeded;
	php_random_fallback_seed_state fallback_seed_state;
	int32_t combined_lcg[2];
	php_random_status_state_mt19937 mt19937;
ZEND_END_MODULE_GLOBALS(random)

PHPAPI ZEND_EXTERN_MODULE_GLOBALS(random)

# define RANDOM_G(v)	ZEND_MODULE_GLOBALS_ACCESSOR(random, v)

#endif	/* PHP_RANDOM_H */

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Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/linksafe	0755	2025-12-15 11:41:24
..	dir	-	root/linksafe	0755	2025-11-20 07:30:54
php_random.h	text/x-c	8.97 KB	root/linksafe	0644	2025-11-20 07:30:59
php_random_csprng.h	text/x-c	2.18 KB	root/linksafe	0644	2025-11-20 07:30:59
php_random_uint128.h	text/x-c	3.62 KB	root/linksafe	0644	2025-11-20 07:30:59