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<?php |
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/* |
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* This file is part of the ManageWP Worker plugin. |
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* |
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* (c) ManageWP LLC <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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|
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class MWP_Action_IncrementalBackup_HashFiles extends MWP_Action_IncrementalBackup_AbstractFiles |
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{ |
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// 100MB |
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const UNIX_HASH_THRESHOLD = 104857600; |
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|
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// 100KB |
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const MAX_CHUNK_SIZE = 102400; |
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|
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public function execute(array $params = array(), MWP_Worker_Request $request) |
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{ |
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$hashComputer = new MWP_IncrementalBackup_HashComputer(); |
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|
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/** |
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* Each file is structured like: |
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* [ |
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* "relativePath" => file path relative to ABSPATH, |
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* "pathEncoded" => is path url encoded?, |
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* "size" => file size sent for reference, |
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* "offset" => number of bytes to offset hash start (integer, optional, default 0), |
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* "limit" => number of bytes to hash (integer, optional, default 0), |
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* "forcePartialHashing" => partially hashes file instead of md5_file always (boolean, optional, default false), |
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* ] |
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*/ |
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$files = $params['files']; |
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$result = array(); |
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|
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// Allow overriding max chunk byte size per request for doing partial hashes |
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$chunkByteSize = isset($params['maxChunkByteSize']) ? $params['maxChunkByteSize'] : self::MAX_CHUNK_SIZE; |
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$hashComputer->setMaxChunkByteSize($chunkByteSize); |
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|
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$unixHashThreshold = isset($params['unixMd5Threshold']) ? $params['unixMd5Threshold'] : self::UNIX_HASH_THRESHOLD; |
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|
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foreach ($files as $file) { |
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$relativePath = $file['path']; |
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$size = $file['size']; |
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$offset = isset($file['offset']) ? $file['offset'] : 0; |
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$limit = isset($file['limit']) ? $file['limit'] : 0; |
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$forcePartial = isset($file['forcePartialHashing']) ? $file['forcePartialHashing'] : false; |
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$decodedRelativePath = $file['pathEncoded'] ? $this->pathDecode($relativePath) : $relativePath; |
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$realPath = $this->getRealPath($decodedRelativePath); |
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|
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// Run a unix command to generate md5 hash if file size exceeds threshold |
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// Ignore partial requests for big files because of speed problems |
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if ($size > $unixHashThreshold && $offset === 0 && $limit === 0) { |
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$hash = $hashComputer->computeUnixMd5Sum($realPath); |
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|
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if ($hash !== null) { |
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$result[] = array( |
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'path' => $relativePath, |
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'hash' => $hash, |
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); |
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|
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continue; |
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} |
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// In case of a failed hashing fall back bellow to compute md5 hash from PHP |
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} |
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|
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$hash = $hashComputer->computeMd5Hash($realPath, $offset, $limit, $forcePartial); |
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$result[] = array( |
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'path' => $relativePath, |
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'hash' => $hash, |
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); |
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} |
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|
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return $this->createResult(array( |
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'files' => $result, |
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)); |
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} |
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} |
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|
