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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
use Ramsey\Uuid\Converter\NumberConverterInterface;
/**
* CombGenerator provides functionality to generate COMB (combined GUID/timestamp)
* sequential UUIDs
*
* @link https://en.wikipedia.org/wiki/Globally_unique_identifier#Sequential_algorithms
*/
class CombGenerator implements RandomGeneratorInterface
{
const TIMESTAMP_BYTES = 6;
/**
* @var RandomGeneratorInterface
*/
private $randomGenerator;
/**
* @var NumberConverterInterface
*/
private $converter;
/**
* Constructs a `CombGenerator` using a random-number generator and a number converter
*
* @param RandomGeneratorInterface $generator Random-number generator for the non-time part.
* @param NumberConverterInterface $numberConverter Instance of number converter.
*/
public function __construct(RandomGeneratorInterface $generator, NumberConverterInterface $numberConverter)
{
$this->converter = $numberConverter;
$this->randomGenerator = $generator;
}
/**
* Generates a string of binary data of the specified length
*
* @param integer $length The number of bytes of random binary data to generate
* @return string A binary string
*/
public function generate($length)
{
if ($length < self::TIMESTAMP_BYTES || $length < 0) {
throw new \InvalidArgumentException('Length must be a positive integer.');
}
$hash = '';
if (self::TIMESTAMP_BYTES > 0 && $length > self::TIMESTAMP_BYTES) {
$hash = $this->randomGenerator->generate($length - self::TIMESTAMP_BYTES);
}
$lsbTime = str_pad($this->converter->toHex($this->timestamp()), self::TIMESTAMP_BYTES * 2, '0', STR_PAD_LEFT);
return hex2bin(str_pad(bin2hex($hash), $length - self::TIMESTAMP_BYTES, '0') . $lsbTime);
}
/**
* Returns current timestamp as integer, precise to 0.00001 seconds
*
* @return string
*/
private function timestamp()
{
$time = explode(' ', microtime(false));
return $time[1] . substr($time[0], 2, 5);
}
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
use Ramsey\Uuid\BinaryUtils;
use Ramsey\Uuid\Converter\TimeConverterInterface;
use Ramsey\Uuid\Provider\NodeProviderInterface;
use Ramsey\Uuid\Provider\TimeProviderInterface;
/**
* DefaultTimeGenerator provides functionality to generate strings of binary
* data for version 1 UUIDs based on a host ID, sequence number, and the current
* time
*/
class DefaultTimeGenerator implements TimeGeneratorInterface
{
/**
* @var NodeProviderInterface
*/
private $nodeProvider;
/**
* @var TimeConverterInterface
*/
private $timeConverter;
/**
* @var TimeProviderInterface
*/
private $timeProvider;
/**
* Constructs a `DefaultTimeGenerator` using a node provider, time converter,
* and time provider
*
* @param NodeProviderInterface $nodeProvider
* @param TimeConverterInterface $timeConverter
* @param TimeProviderInterface $timeProvider
*/
public function __construct(
NodeProviderInterface $nodeProvider,
TimeConverterInterface $timeConverter,
TimeProviderInterface $timeProvider
) {
$this->nodeProvider = $nodeProvider;
$this->timeConverter = $timeConverter;
$this->timeProvider = $timeProvider;
}
/**
* Generate a version 1 UUID from a host ID, sequence number, and the current time
*
* If $node is not given, we will attempt to obtain the local hardware
* address. If $clockSeq is given, it is used as the sequence number;
* otherwise a random 14-bit sequence number is chosen.
*
* @param int|string $node A 48-bit number representing the hardware address
* This number may be represented as an integer or a hexadecimal string.
* @param int $clockSeq A 14-bit number used to help avoid duplicates that
* could arise when the clock is set backwards in time or if the node ID
* changes.
* @return string A binary string
*/
public function generate($node = null, $clockSeq = null)
{
$node = $this->getValidNode($node);
if ($clockSeq === null) {
// Not using "stable storage"; see RFC 4122, Section 4.2.1.1
$clockSeq = mt_rand(0, 1 << 14);
}
// Create a 60-bit time value as a count of 100-nanosecond intervals
// since 00:00:00.00, 15 October 1582
$timeOfDay = $this->timeProvider->currentTime();
$uuidTime = $this->timeConverter->calculateTime($timeOfDay['sec'], $timeOfDay['usec']);
$timeHi = BinaryUtils::applyVersion($uuidTime['hi'], 1);
$clockSeqHi = BinaryUtils::applyVariant($clockSeq >> 8);
$hex = vsprintf(
'%08s%04s%04s%02s%02s%012s',
array(
$uuidTime['low'],
$uuidTime['mid'],
sprintf('%04x', $timeHi),
sprintf('%02x', $clockSeqHi),
sprintf('%02x', $clockSeq & 0xff),
$node,
)
);
return hex2bin($hex);
}
/**
* Uses the node provider given when constructing this instance to get
* the node ID (usually a MAC address)
*
* @param string|int $node A node value that may be used to override the node provider
* @return string Hexadecimal representation of the node ID
*/
protected function getValidNode($node)
{
if ($node === null) {
$node = $this->nodeProvider->getNode();
}
// Convert the node to hex, if it is still an integer
if (is_int($node)) {
$node = sprintf('%012x', $node);
}
if (!ctype_xdigit($node) || strlen($node) > 12) {
throw new \InvalidArgumentException('Invalid node value');
}
return strtolower(sprintf('%012s', $node));
}
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
/**
* MtRandRandomGenerator provides functionality to generate strings of random
* binary data using the `mt_rand()` PHP function
*
* @link http://php.net/mt_rand
*/
class MtRandGenerator implements RandomGeneratorInterface
{
/**
* Generates a string of random binary data of the specified length
*
* @param integer $length The number of bytes of random binary data to generate
* @return string A binary string
*/
public function generate($length)
{
$bytes = '';
for ($i = 1; $i <= $length; $i++) {
$bytes = chr(mt_rand(0, 255)) . $bytes;
}
return $bytes;
}
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
/**
* OpenSslRandomGenerator provides functionality to generate strings of random
* binary data using the `openssl_random_pseudo_bytes()` PHP function
*
* The use of this generator requires PHP to be compiled using the
* `--with-openssl` option.
*
* @link http://php.net/openssl_random_pseudo_bytes
*/
class OpenSslGenerator implements RandomGeneratorInterface
{
/**
* Generates a string of random binary data of the specified length
*
* @param integer $length The number of bytes of random binary data to generate
* @return string A binary string
*/
public function generate($length)
{
return openssl_random_pseudo_bytes($length);
}
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
/**
* PeclUuidRandomGenerator provides functionality to generate strings of random
* binary data using the PECL UUID PHP extension
*
* @link https://pecl.php.net/package/uuid
*/
class PeclUuidRandomGenerator implements RandomGeneratorInterface
{
/**
* Generates a string of random binary data of the specified length
*
* @param integer $length The number of bytes of random binary data to generate
* @return string A binary string
*/
public function generate($length)
{
$uuid = uuid_create(UUID_TYPE_RANDOM);
return uuid_parse($uuid);
}
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
/**
* PeclUuidTimeGenerator provides functionality to generate strings of binary
* data for version 1 UUIDs using the PECL UUID PHP extension
*
* @link https://pecl.php.net/package/uuid
*/
class PeclUuidTimeGenerator implements TimeGeneratorInterface
{
/**
* Generate a version 1 UUID using the PECL UUID extension
*
* @param int|string $node Not used in this context
* @param int $clockSeq Not used in this context
* @return string A binary string
*/
public function generate($node = null, $clockSeq = null)
{
$uuid = uuid_create(UUID_TYPE_TIME);
return uuid_parse($uuid);
}
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
/**
* RandomBytesGenerator provides functionality to generate strings of random
* binary data using `random_bytes()` function in PHP 7+ or paragonie/random_compat
*
* @link http://php.net/random_bytes
* @link https://github.com/paragonie/random_compat
*/
class RandomBytesGenerator implements RandomGeneratorInterface
{
/**
* Generates a string of random binary data of the specified length
*
* @param integer $length The number of bytes of random binary data to generate
* @return string A binary string
*/
public function generate($length)
{
return random_bytes($length);
}
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
/**
* A factory for retrieving a random generator, based on the environment
*/
class RandomGeneratorFactory
{
/**
* Returns a default random generator, based on the current environment
*
* @return RandomGeneratorInterface
*/
public static function getGenerator()
{
return new RandomBytesGenerator();
}
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
/**
* RandomGeneratorInterface provides functionality to generate strings of random
* binary data
*/
interface RandomGeneratorInterface
{
/**
* Generates a string of random binary data of the specified length
*
* @param integer $length The number of bytes of random binary data to generate
* @return string A binary string
*/
public function generate($length);
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
use RandomLib\Generator;
use RandomLib\Factory;
/**
* RandomLibAdapter provides functionality to generate strings of random
* binary data using the ircmaxell/random-lib library
*
* @link https://packagist.org/packages/ircmaxell/random-lib
*/
class RandomLibAdapter implements RandomGeneratorInterface
{
/**
* @var Generator
*/
private $generator;
/**
* Constructs a `RandomLibAdapter` using a `RandomLib\Generator`
*
* By default, if no `Generator` is passed in, this creates a medium-strength
* generator to use when generating random binary data.
*
* @param Generator $generator An ircmaxell/random-lib `Generator`
*/
public function __construct(Generator $generator = null)
{
$this->generator = $generator;
if ($this->generator === null) {
$factory = new Factory();
$this->generator = $factory->getMediumStrengthGenerator();
}
}
/**
* Generates a string of random binary data of the specified length
*
* @param integer $length The number of bytes of random binary data to generate
* @return string A binary string
*/
public function generate($length)
{
return $this->generator->generate($length);
}
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
/**
* SodiumRandomGenerator provides functionality to generate strings of random
* binary data using the PECL libsodium extension
*
* @link http://pecl.php.net/package/libsodium
* @link https://paragonie.com/book/pecl-libsodium
*/
class SodiumRandomGenerator implements RandomGeneratorInterface
{
/**
* Generates a string of random binary data of the specified length
*
* @param integer $length The number of bytes of random binary data to generate
* @return string A binary string
*/
public function generate($length)
{
return \Sodium\randombytes_buf($length);
}
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
use Ramsey\Uuid\Converter\TimeConverterInterface;
use Ramsey\Uuid\Provider\NodeProviderInterface;
use Ramsey\Uuid\Provider\TimeProviderInterface;
/**
* A factory for retrieving a time generator, based on the environment
*/
class TimeGeneratorFactory
{
/**
* @var NodeProviderInterface
*/
private $nodeProvider;
/**
* @var TimeConverterInterface
*/
private $timeConverter;
/**
* @var TimeProviderInterface
*/
private $timeProvider;
/**
* Constructs a `TimeGeneratorFactory` using a node provider, time converter,
* and time provider
*
* @param NodeProviderInterface $nodeProvider
* @param TimeConverterInterface $timeConverter
* @param TimeProviderInterface $timeProvider
*/
public function __construct(
NodeProviderInterface $nodeProvider,
TimeConverterInterface $timeConverter,
TimeProviderInterface $timeProvider
) {
$this->nodeProvider = $nodeProvider;
$this->timeConverter = $timeConverter;
$this->timeProvider = $timeProvider;
}
/**
* Returns a default time generator, based on the current environment
*
* @return TimeGeneratorInterface
*/
public function getGenerator()
{
return new DefaultTimeGenerator(
$this->nodeProvider,
$this->timeConverter,
$this->timeProvider
);
}
}

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<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/
namespace Ramsey\Uuid\Generator;
/**
* TimeGeneratorInterface provides functionality to generate strings of binary
* data for version 1 UUIDs based on a host ID, sequence number, and the current
* time
*/
interface TimeGeneratorInterface
{
/**
* Generate a version 1 UUID from a host ID, sequence number, and the current time
*
* @param int|string $node A 48-bit number representing the hardware address
* This number may be represented as an integer or a hexadecimal string.
* @param int $clockSeq A 14-bit number used to help avoid duplicates that
* could arise when the clock is set backwards in time or if the node ID
* changes.
* @return string A binary string
*/
public function generate($node = null, $clockSeq = null);
}