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| 1 | <?php |
| 2 | |
| 3 | use MediaWiki\Deferred\AutoCommitUpdate; |
| 4 | use MediaWiki\Deferred\DeferredUpdates; |
| 5 | use MediaWiki\FileRepo\FileRepo; |
| 6 | use MediaWiki\FileRepo\LocalRepo; |
| 7 | use MediaWiki\Logger\LoggerFactory; |
| 8 | use MediaWiki\MediaWikiServices; |
| 9 | use MediaWiki\Request\WebRequestUpload; |
| 10 | use MediaWiki\Status\Status; |
| 11 | use MediaWiki\User\User; |
| 12 | use Psr\Log\LoggerInterface; |
| 13 | use Wikimedia\FileBackend\FileBackend; |
| 14 | |
| 15 | /** |
| 16 | * Backend for uploading files from chunks. |
| 17 | * |
| 18 | * This program is free software; you can redistribute it and/or modify |
| 19 | * it under the terms of the GNU General Public License as published by |
| 20 | * the Free Software Foundation; either version 2 of the License, or |
| 21 | * (at your option) any later version. |
| 22 | * |
| 23 | * This program is distributed in the hope that it will be useful, |
| 24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 26 | * GNU General Public License for more details. |
| 27 | * |
| 28 | * You should have received a copy of the GNU General Public License along |
| 29 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 30 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 31 | * http://www.gnu.org/copyleft/gpl.html |
| 32 | * |
| 33 | * @file |
| 34 | * @ingroup Upload |
| 35 | */ |
| 36 | |
| 37 | /** |
| 38 | * Implements uploading from chunks |
| 39 | * |
| 40 | * @ingroup Upload |
| 41 | * @author Michael Dale |
| 42 | */ |
| 43 | class UploadFromChunks extends UploadFromFile { |
| 44 | /** @var LocalRepo */ |
| 45 | private $repo; |
| 46 | /** @var UploadStash */ |
| 47 | public $stash; |
| 48 | /** @var User */ |
| 49 | public $user; |
| 50 | |
| 51 | /** @var int|null */ |
| 52 | protected $mOffset; |
| 53 | /** @var int|null */ |
| 54 | protected $mChunkIndex; |
| 55 | /** @var string */ |
| 56 | protected $mFileKey; |
| 57 | /** @var string|null */ |
| 58 | protected $mVirtualTempPath; |
| 59 | |
| 60 | private LoggerInterface $logger; |
| 61 | |
| 62 | /** @noinspection PhpMissingParentConstructorInspection */ |
| 63 | |
| 64 | /** |
| 65 | * Setup local pointers to stash, repo and user (similar to UploadFromStash) |
| 66 | * |
| 67 | * @param User $user |
| 68 | * @param UploadStash|false $stash Default: false |
| 69 | * @param FileRepo|false $repo Default: false |
| 70 | */ |
| 71 | public function __construct( User $user, $stash = false, $repo = false ) { |
| 72 | $this->user = $user; |
| 73 | |
| 74 | if ( $repo ) { |
| 75 | $this->repo = $repo; |
| 76 | } else { |
| 77 | $this->repo = MediaWikiServices::getInstance()->getRepoGroup()->getLocalRepo(); |
| 78 | } |
| 79 | |
| 80 | if ( $stash ) { |
| 81 | $this->stash = $stash; |
| 82 | } else { |
| 83 | wfDebug( __METHOD__ . " creating new UploadFromChunks instance for " . $user->getId() ); |
| 84 | $this->stash = new UploadStash( $this->repo, $this->user ); |
| 85 | } |
| 86 | |
| 87 | $this->logger = LoggerFactory::getInstance( 'upload' ); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * @inheritDoc |
| 92 | */ |
| 93 | public function tryStashFile( User $user, $isPartial = false ) { |
| 94 | try { |
| 95 | $this->verifyChunk(); |
| 96 | } catch ( UploadChunkVerificationException $e ) { |
| 97 | return Status::newFatal( $e->msg ); |
| 98 | } |
| 99 | |
| 100 | return parent::tryStashFile( $user, $isPartial ); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Calls the parent doStashFile and updates the uploadsession table to handle "chunks" |
| 105 | * |
| 106 | * @param User|null $user |
| 107 | * @return UploadStashFile Stashed file |
| 108 | */ |
| 109 | protected function doStashFile( ?User $user = null ) { |
| 110 | // Stash file is the called on creating a new chunk session: |
| 111 | $this->mChunkIndex = 0; |
| 112 | $this->mOffset = 0; |
| 113 | |
| 114 | // Create a local stash target |
| 115 | $this->mStashFile = parent::doStashFile( $user ); |
| 116 | // Update the initial file offset (based on file size) |
| 117 | $this->mOffset = $this->mStashFile->getSize(); |
| 118 | $this->mFileKey = $this->mStashFile->getFileKey(); |
| 119 | $this->mVirtualTempPath = $this->mStashFile->getPath(); |
| 120 | |
| 121 | // Output a copy of this first to chunk 0 location: |
| 122 | $this->outputChunk( $this->mStashFile->getPath() ); |
| 123 | |
| 124 | // Update db table to reflect initial "chunk" state |
| 125 | $this->updateChunkStatus(); |
| 126 | |
| 127 | return $this->mStashFile; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Continue chunk uploading |
| 132 | * |
| 133 | * @param string $name |
| 134 | * @param string $key |
| 135 | * @param WebRequestUpload $webRequestUpload |
| 136 | */ |
| 137 | public function continueChunks( $name, $key, $webRequestUpload ) { |
| 138 | $this->mFileKey = $key; |
| 139 | $this->mUpload = $webRequestUpload; |
| 140 | // Get the chunk status form the db: |
| 141 | $this->getChunkStatus(); |
| 142 | |
| 143 | $metadata = $this->stash->getMetadata( $key ); |
| 144 | $tempPath = $this->getRealPath( $metadata['us_path'] ); |
| 145 | if ( $tempPath === false ) { |
| 146 | throw new UploadStashBadPathException( wfMessage( 'uploadstash-bad-path' ) ); |
| 147 | } |
| 148 | $this->initializePathInfo( $name, |
| 149 | $tempPath, |
| 150 | $metadata['us_size'], |
| 151 | false |
| 152 | ); |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * Append the final chunk and ready file for parent::performUpload() |
| 157 | * @return Status |
| 158 | */ |
| 159 | public function concatenateChunks() { |
| 160 | $oldFileKey = $this->mFileKey; |
| 161 | $chunkIndex = $this->getChunkIndex(); |
| 162 | $this->logger->debug( |
| 163 | __METHOD__ . ' concatenate {totalChunks} chunks: {offset} inx: {curIndex}', |
| 164 | [ |
| 165 | 'offset' => $this->getOffset(), |
| 166 | 'totalChunks' => $this->mChunkIndex, |
| 167 | 'curIndex' => $chunkIndex, |
| 168 | 'filekey' => $oldFileKey |
| 169 | ] |
| 170 | ); |
| 171 | |
| 172 | // Concatenate all the chunks to mVirtualTempPath |
| 173 | $fileList = []; |
| 174 | // The first chunk is stored at the mVirtualTempPath path so we start on "chunk 1" |
| 175 | for ( $i = 0; $i <= $chunkIndex; $i++ ) { |
| 176 | $fileList[] = $this->getVirtualChunkLocation( $i ); |
| 177 | } |
| 178 | |
| 179 | // Get the file extension from the last chunk |
| 180 | $ext = FileBackend::extensionFromPath( $this->mVirtualTempPath ); |
| 181 | // Get a 0-byte temp file to perform the concatenation at |
| 182 | $tmpFile = MediaWikiServices::getInstance()->getTempFSFileFactory() |
| 183 | ->newTempFSFile( 'chunkedupload_', $ext ); |
| 184 | $tmpPath = false; // fail in concatenate() |
| 185 | if ( $tmpFile ) { |
| 186 | // keep alive with $this |
| 187 | $tmpPath = $tmpFile->bind( $this )->getPath(); |
| 188 | } else { |
| 189 | $this->logger->warning( "Error getting tmp file", [ 'filekey' => $oldFileKey ] ); |
| 190 | } |
| 191 | |
| 192 | // Concatenate the chunks at the temp file |
| 193 | $tStart = microtime( true ); |
| 194 | $status = $this->repo->concatenate( $fileList, $tmpPath ); |
| 195 | $tAmount = microtime( true ) - $tStart; |
| 196 | if ( !$status->isOK() ) { |
| 197 | // This is a backend error and not user-related, so log is safe |
| 198 | // Upload verification further on is not safe to log server side |
| 199 | $this->logFileBackendStatus( |
| 200 | $status, |
| 201 | '[{type}] Error on concatenate {chunks} stashed files ({details})', |
| 202 | [ 'chunks' => $chunkIndex, 'filekey' => $oldFileKey ] |
| 203 | ); |
| 204 | return $status; |
| 205 | } else { |
| 206 | // Delete old chunks in deferred job. Put in deferred job because deleting |
| 207 | // lots of chunks can take a long time, sometimes to the point of causing |
| 208 | // a timeout, and we do not want that to tank the operation. Note that chunks |
| 209 | // are also automatically deleted after a set time by cleanupUploadStash.php |
| 210 | // Additionally, using AutoCommitUpdate ensures that we do not delete files |
| 211 | // if the main transaction is rolled back for some reason. |
| 212 | DeferredUpdates::addUpdate( new AutoCommitUpdate( |
| 213 | $this->repo->getPrimaryDB(), |
| 214 | __METHOD__, |
| 215 | function () use( $fileList, $oldFileKey ) { |
| 216 | $status = $this->repo->quickPurgeBatch( $fileList ); |
| 217 | if ( !$status->isOK() ) { |
| 218 | $this->logger->warning( |
| 219 | "Could not delete chunks of {filekey} - {status}", |
| 220 | [ |
| 221 | 'status' => (string)$status, |
| 222 | 'filekey' => $oldFileKey, |
| 223 | ] |
| 224 | ); |
| 225 | } |
| 226 | } |
| 227 | ) ); |
| 228 | } |
| 229 | |
| 230 | wfDebugLog( 'fileconcatenate', "Combined $i chunks in $tAmount seconds." ); |
| 231 | |
| 232 | // File system path of the actual full temp file |
| 233 | $this->setTempFile( $tmpPath ); |
| 234 | |
| 235 | $ret = $this->verifyUpload(); |
| 236 | if ( $ret['status'] !== UploadBase::OK ) { |
| 237 | $this->logger->info( |
| 238 | "Verification failed for chunked upload {filekey}", |
| 239 | [ |
| 240 | 'user' => $this->user->getName(), |
| 241 | 'filekey' => $oldFileKey |
| 242 | ] |
| 243 | ); |
| 244 | // @phan-suppress-next-line PhanTypeMismatchReturnProbablyReal |
| 245 | return $this->convertVerifyErrorToStatus( $ret ); |
| 246 | } |
| 247 | |
| 248 | // Update the mTempPath and mStashFile |
| 249 | // (for FileUpload or normal Stash to take over) |
| 250 | $tStart = microtime( true ); |
| 251 | // This is a re-implementation of UploadBase::tryStashFile(), we can't call it because we |
| 252 | // override doStashFile() with completely different functionality in this class... |
| 253 | $error = $this->runUploadStashFileHook( $this->user ); |
| 254 | if ( $error ) { |
| 255 | $status->fatal( ...$error ); |
| 256 | $this->logger->info( "Aborting stash upload due to hook - {status}", |
| 257 | [ |
| 258 | 'status' => (string)$status, |
| 259 | 'user' => $this->user->getName(), |
| 260 | 'filekey' => $this->mFileKey |
| 261 | ] |
| 262 | ); |
| 263 | return $status; |
| 264 | } |
| 265 | try { |
| 266 | $this->mStashFile = parent::doStashFile( $this->user ); |
| 267 | } catch ( UploadStashException $e ) { |
| 268 | $this->logger->warning( "Could not stash file for {user} because {error} {msg}", |
| 269 | [ |
| 270 | 'user' => $this->user->getName(), |
| 271 | 'error' => get_class( $e ), |
| 272 | 'msg' => $e->getMessage(), |
| 273 | 'filekey' => $this->mFileKey |
| 274 | ] |
| 275 | ); |
| 276 | $status->fatal( 'uploadstash-exception', get_class( $e ), $e->getMessage() ); |
| 277 | return $status; |
| 278 | } |
| 279 | |
| 280 | $tAmount = microtime( true ) - $tStart; |
| 281 | // @phan-suppress-next-line PhanTypeMismatchArgumentNullable tmpFile is set when tmpPath is set here |
| 282 | $this->mStashFile->setLocalReference( $tmpFile ); // reuse (e.g. for getImageInfo()) |
| 283 | $this->logger->info( "Stashed combined ({chunks} chunks) of {oldkey} under new name {filekey}", |
| 284 | [ |
| 285 | 'chunks' => $i, |
| 286 | 'stashTime' => $tAmount, |
| 287 | 'oldpath' => $this->mVirtualTempPath, |
| 288 | 'filekey' => $this->mStashFile->getFileKey(), |
| 289 | 'oldkey' => $oldFileKey, |
| 290 | 'newpath' => $this->mStashFile->getPath(), |
| 291 | 'user' => $this->user->getName() |
| 292 | ] |
| 293 | ); |
| 294 | wfDebugLog( 'fileconcatenate', "Stashed combined file ($i chunks) in $tAmount seconds." ); |
| 295 | |
| 296 | return $status; |
| 297 | } |
| 298 | |
| 299 | /** |
| 300 | * Returns the virtual chunk location: |
| 301 | * @param int $index |
| 302 | * @return string |
| 303 | */ |
| 304 | private function getVirtualChunkLocation( $index ) { |
| 305 | return $this->repo->getVirtualUrl( 'temp' ) . |
| 306 | '/' . |
| 307 | $this->repo->getHashPath( |
| 308 | $this->getChunkFileKey( $index ) |
| 309 | ) . |
| 310 | $this->getChunkFileKey( $index ); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Add a chunk to the temporary directory |
| 315 | * |
| 316 | * @param string $chunkPath Path to temporary chunk file |
| 317 | * @param int $chunkSize Size of the current chunk |
| 318 | * @param int $offset Offset of current chunk ( mutch match database chunk offset ) |
| 319 | * @return Status |
| 320 | */ |
| 321 | public function addChunk( $chunkPath, $chunkSize, $offset ) { |
| 322 | // Get the offset before we add the chunk to the file system |
| 323 | $preAppendOffset = $this->getOffset(); |
| 324 | |
| 325 | if ( $preAppendOffset + $chunkSize > $this->getMaxUploadSize() ) { |
| 326 | $status = Status::newFatal( 'file-too-large' ); |
| 327 | } else { |
| 328 | // Make sure the client is uploading the correct chunk with a matching offset. |
| 329 | if ( $preAppendOffset == $offset ) { |
| 330 | // Update local chunk index for the current chunk |
| 331 | $this->mChunkIndex++; |
| 332 | try { |
| 333 | # For some reason mTempPath is set to first part |
| 334 | $oldTemp = $this->mTempPath; |
| 335 | $this->mTempPath = $chunkPath; |
| 336 | $this->verifyChunk(); |
| 337 | $this->mTempPath = $oldTemp; |
| 338 | } catch ( UploadChunkVerificationException $e ) { |
| 339 | $this->logger->info( "Error verifying upload chunk {msg}", |
| 340 | [ |
| 341 | 'user' => $this->user->getName(), |
| 342 | 'msg' => $e->getMessage(), |
| 343 | 'chunkIndex' => $this->mChunkIndex, |
| 344 | 'filekey' => $this->mFileKey |
| 345 | ] |
| 346 | ); |
| 347 | |
| 348 | return Status::newFatal( $e->msg ); |
| 349 | } |
| 350 | $status = $this->outputChunk( $chunkPath ); |
| 351 | if ( $status->isGood() ) { |
| 352 | // Update local offset: |
| 353 | $this->mOffset = $preAppendOffset + $chunkSize; |
| 354 | // Update chunk table status db |
| 355 | $this->updateChunkStatus(); |
| 356 | } |
| 357 | } else { |
| 358 | $status = Status::newFatal( 'invalid-chunk-offset' ); |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | return $status; |
| 363 | } |
| 364 | |
| 365 | /** |
| 366 | * Update the chunk db table with the current status: |
| 367 | */ |
| 368 | private function updateChunkStatus() { |
| 369 | $this->logger->info( "update chunk status for {filekey} offset: {offset} inx: {inx}", |
| 370 | [ |
| 371 | 'offset' => $this->getOffset(), |
| 372 | 'inx' => $this->getChunkIndex(), |
| 373 | 'filekey' => $this->mFileKey, |
| 374 | 'user' => $this->user->getName() |
| 375 | ] |
| 376 | ); |
| 377 | |
| 378 | $dbw = $this->repo->getPrimaryDB(); |
| 379 | $dbw->newUpdateQueryBuilder() |
| 380 | ->update( 'uploadstash' ) |
| 381 | ->set( [ |
| 382 | 'us_status' => 'chunks', |
| 383 | 'us_chunk_inx' => $this->getChunkIndex(), |
| 384 | 'us_size' => $this->getOffset() |
| 385 | ] ) |
| 386 | ->where( [ 'us_key' => $this->mFileKey ] ) |
| 387 | ->caller( __METHOD__ )->execute(); |
| 388 | } |
| 389 | |
| 390 | /** |
| 391 | * Get the chunk db state and populate update relevant local values |
| 392 | */ |
| 393 | private function getChunkStatus() { |
| 394 | // get primary db to avoid race conditions. |
| 395 | // Otherwise, if chunk upload time < replag there will be spurious errors |
| 396 | $dbw = $this->repo->getPrimaryDB(); |
| 397 | $row = $dbw->newSelectQueryBuilder() |
| 398 | ->select( [ 'us_chunk_inx', 'us_size', 'us_path' ] ) |
| 399 | ->from( 'uploadstash' ) |
| 400 | ->where( [ 'us_key' => $this->mFileKey ] ) |
| 401 | ->caller( __METHOD__ )->fetchRow(); |
| 402 | // Handle result: |
| 403 | if ( $row ) { |
| 404 | $this->mChunkIndex = $row->us_chunk_inx; |
| 405 | $this->mOffset = $row->us_size; |
| 406 | $this->mVirtualTempPath = $row->us_path; |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | /** |
| 411 | * Get the current Chunk index |
| 412 | * @return int Index of the current chunk |
| 413 | */ |
| 414 | private function getChunkIndex() { |
| 415 | return $this->mChunkIndex ?? 0; |
| 416 | } |
| 417 | |
| 418 | /** |
| 419 | * Get the offset at which the next uploaded chunk will be appended to |
| 420 | * @return int Current byte offset of the chunk file set |
| 421 | */ |
| 422 | public function getOffset() { |
| 423 | return $this->mOffset ?? 0; |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | * Output the chunk to disk |
| 428 | * |
| 429 | * @param string $chunkPath |
| 430 | * @throws UploadChunkFileException |
| 431 | * @return Status |
| 432 | */ |
| 433 | private function outputChunk( $chunkPath ) { |
| 434 | // Key is fileKey + chunk index |
| 435 | $fileKey = $this->getChunkFileKey(); |
| 436 | |
| 437 | // Store the chunk per its indexed fileKey: |
| 438 | $hashPath = $this->repo->getHashPath( $fileKey ); |
| 439 | $storeStatus = $this->repo->quickImport( $chunkPath, |
| 440 | $this->repo->getZonePath( 'temp' ) . "/{$hashPath}{$fileKey}" ); |
| 441 | |
| 442 | // Check for error in stashing the chunk: |
| 443 | if ( !$storeStatus->isOK() ) { |
| 444 | $error = $this->logFileBackendStatus( |
| 445 | $storeStatus, |
| 446 | '[{type}] Error storing chunk in "{chunkPath}" for {fileKey} ({details})', |
| 447 | [ 'chunkPath' => $chunkPath, 'fileKey' => $fileKey ] |
| 448 | ); |
| 449 | throw new UploadChunkFileException( "Error storing file in '{chunkPath}': " . |
| 450 | implode( '; ', $error ), [ 'chunkPath' => $chunkPath ] ); |
| 451 | } |
| 452 | |
| 453 | return $storeStatus; |
| 454 | } |
| 455 | |
| 456 | private function getChunkFileKey( ?int $index = null ): string { |
| 457 | return $this->mFileKey . '.' . ( $index ?? $this->getChunkIndex() ); |
| 458 | } |
| 459 | |
| 460 | /** |
| 461 | * Verify that the chunk isn't really an evil html file |
| 462 | * |
| 463 | * @throws UploadChunkVerificationException |
| 464 | */ |
| 465 | private function verifyChunk() { |
| 466 | // Rest mDesiredDestName here so we verify the name as if it were mFileKey |
| 467 | $oldDesiredDestName = $this->mDesiredDestName; |
| 468 | $this->mDesiredDestName = $this->mFileKey; |
| 469 | $this->mTitle = false; |
| 470 | $res = $this->verifyPartialFile(); |
| 471 | $this->mDesiredDestName = $oldDesiredDestName; |
| 472 | $this->mTitle = false; |
| 473 | if ( is_array( $res ) ) { |
| 474 | throw new UploadChunkVerificationException( $res ); |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * Log a status object from FileBackend functions (via FileRepo functions) to the upload log channel. |
| 480 | * Return a array with the first error to build up a exception message |
| 481 | * |
| 482 | * @param Status $status |
| 483 | * @param string $logMessage |
| 484 | * @param array $context |
| 485 | * @return array |
| 486 | */ |
| 487 | private function logFileBackendStatus( Status $status, string $logMessage, array $context = [] ): array { |
| 488 | $logger = $this->logger; |
| 489 | $errorToThrow = null; |
| 490 | $warningToThrow = null; |
| 491 | |
| 492 | foreach ( $status->getErrors() as $errorItem ) { |
| 493 | // The message key stands for distinct error situation from the file backend, |
| 494 | // each error situation should be shown up in aggregated stats as own point, replace in message |
| 495 | $logMessageType = str_replace( '{type}', $errorItem['message'], $logMessage ); |
| 496 | |
| 497 | // The message arguments often contains the name of the failing datacenter or file names |
| 498 | // and should not show up in aggregated stats, add to context |
| 499 | $context['details'] = implode( '; ', $errorItem['params'] ); |
| 500 | $context['user'] = $this->user->getName(); |
| 501 | |
| 502 | if ( $errorItem['type'] === 'error' ) { |
| 503 | // Use the first error of the list for the exception text |
| 504 | $errorToThrow ??= [ $errorItem['message'], ...$errorItem['params'] ]; |
| 505 | $logger->error( $logMessageType, $context ); |
| 506 | } else { |
| 507 | // When no error is found, fall back to the first warning |
| 508 | $warningToThrow ??= [ $errorItem['message'], ...$errorItem['params'] ]; |
| 509 | $logger->warning( $logMessageType, $context ); |
| 510 | } |
| 511 | } |
| 512 | return $errorToThrow ?? $warningToThrow ?? [ 'unknown', 'no error recorded' ]; |
| 513 | } |
| 514 | } |