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<?php |
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declare(strict_types=1); |
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/* |
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* Copyright (c) Ne-Lexa |
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* |
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* For the full copyright and license information, please view |
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* the LICENSE file that was distributed with this source code. |
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* |
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* @see https://github.com/Ne-Lexa/google-play-scraper |
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*/ |
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namespace Nelexa\GPlay\HttpClient; |
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use Psr\Http\Message\RequestInterface; |
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final class HashUtil |
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{ |
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/** |
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* Returns request hash. |
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* |
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* @param RequestInterface $request Request |
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* @param string $hashAlgo Hash algo |
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* |
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* @return string hash |
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*/ |
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public static function getRequestHash(RequestInterface $request, string $hashAlgo = 'crc32b'): string |
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{ |
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$ctx = hash_init($hashAlgo); |
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hash_update($ctx, $request->getMethod()); |
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hash_update($ctx, (string) $request->getUri()); |
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foreach ($request->getHeaders() as $name => $header) { |
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hash_update($ctx, $name . ': ' . implode(', ', $header)); |
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} |
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hash_update($ctx, $request->getBody()->getContents()); |
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return hash_final($ctx); |
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} |
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/** |
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* @param callable $func Callable, function name, class name or object |
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* @param string $hashAlgo Hash algorithm |
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* |
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* @throws \ReflectionException |
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* |
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* @return string |
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*/ |
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public static function hashCallable(callable $func, string $hashAlgo = 'crc32b'): string |
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{ |
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if (\is_object($func)) { |
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return self::generateHashByCallableObject($func, $hashAlgo); |
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} |
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if (\is_string($func) && strpos($func, '::') !== false) { |
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$func = explode('::', $func, 2); |
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} |
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if (\is_array($func) && \count($func) === 2) { |
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[$classRef, $method] = $func; |
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$ref = (new \ReflectionClass($classRef))->getMethod($method); |
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} elseif (\is_string($func)) { |
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if (class_exists($func, false)) { |
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$ref = new \ReflectionClass($func); |
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} elseif (\function_exists($func)) { |
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$ref = new \ReflectionFunction($func); |
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} |
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} |
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if (!isset($ref)) { |
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throw new \RuntimeException('Could not calculate hash for passed callable.'); |
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} |
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return self::generateHashByReflection($ref, $hashAlgo); |
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} |
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/** |
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* @param callable|object $func |
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* @param string $hashAlgo Hash algorithm |
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* |
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* @throws \ReflectionException |
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* |
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* @return string |
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*/ |
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private static function generateHashByCallableObject(callable $func, string $hashAlgo): string |
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{ |
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static $hashes; |
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if ($hashes === null) { |
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$hashes = new \SplObjectStorage(); |
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} |
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if (!isset($hashes[$func])) { |
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$hashContents = false; |
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if ($func instanceof \Closure) { |
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$ref = new \ReflectionFunction($func); |
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$hashContents = true; |
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} else { |
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$ref = new \ReflectionClass($func); |
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if ($ref->isAnonymous()) { |
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$hashContents = true; |
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} |
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} |
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$ctx = hash_init($hashAlgo); |
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if ($ref->isUserDefined()) { |
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if ($hashContents) { |
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$file = new \SplFileObject($ref->getFileName()); |
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$file->seek($ref->getStartLine() - 1); |
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while ($file->key() < $ref->getEndLine()) { |
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hash_update($ctx, $file->current()); |
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$file->next(); |
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} |
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} else { |
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hash_update( |
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$ctx, |
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$ref->getName() . \PHP_EOL |
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. $ref->getFileName() . \PHP_EOL |
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. filemtime($ref->getFileName()) |
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); |
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} |
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} else { |
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hash_update($ctx, $ref->getName()); |
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} |
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$hashes[$func] = hash_final($ctx); |
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} |
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return (string) $hashes[$func]; |
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} |
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/** |
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* @param \ReflectionClass|\ReflectionFunction|\ReflectionMethod $ref |
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* @param string $hashAlgo |
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* |
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* @return string |
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*/ |
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private static function generateHashByReflection($ref, string $hashAlgo): string |
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{ |
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static $hashes = []; |
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if (!isset($hashes[$ref->getName()])) { |
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if ($ref->isUserDefined()) { |
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$hashes[$ref->getName()] = hash( |
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$hashAlgo, |
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$ref->getName() . \PHP_EOL |
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. $ref->getFileName() . \PHP_EOL |
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. filemtime($ref->getFileName()) |
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); |
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} else { |
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$hashes[$ref->getName()] = hash($hashAlgo, $ref->getName()); |
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} |
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} |
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return $hashes[$ref->getName()]; |
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} |
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} |
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Ne-Lexa /
google-play-scraper
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