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| 1 | <?php |
| 2 | /** |
| 3 | * Scan the logging table and purge affected files within a timeframe. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | * @ingroup Maintenance |
| 22 | */ |
| 23 | |
| 24 | use MediaWiki\Title\Title; |
| 25 | |
| 26 | require_once __DIR__ . '/Maintenance.php'; |
| 27 | |
| 28 | /** |
| 29 | * Maintenance script that scans the deletion log and purges affected files |
| 30 | * within a timeframe. |
| 31 | * |
| 32 | * @ingroup Maintenance |
| 33 | */ |
| 34 | class PurgeChangedFiles extends Maintenance { |
| 35 | /** |
| 36 | * Mapping from type option to log type and actions. |
| 37 | * @var array |
| 38 | */ |
| 39 | private static $typeMappings = [ |
| 40 | 'created' => [ |
| 41 | 'upload' => [ 'upload' ], |
| 42 | 'import' => [ 'upload', 'interwiki' ], |
| 43 | ], |
| 44 | 'deleted' => [ |
| 45 | 'delete' => [ 'delete', 'revision' ], |
| 46 | 'suppress' => [ 'delete', 'revision' ], |
| 47 | ], |
| 48 | 'modified' => [ |
| 49 | 'upload' => [ 'overwrite', 'revert' ], |
| 50 | 'move' => [ 'move', 'move_redir' ], |
| 51 | ], |
| 52 | ]; |
| 53 | |
| 54 | /** |
| 55 | * @var string |
| 56 | */ |
| 57 | private $startTimestamp; |
| 58 | |
| 59 | /** |
| 60 | * @var string |
| 61 | */ |
| 62 | private $endTimestamp; |
| 63 | |
| 64 | public function __construct() { |
| 65 | parent::__construct(); |
| 66 | $this->addDescription( 'Scan the logging table and purge files and thumbnails.' ); |
| 67 | $this->addOption( 'starttime', 'Starting timestamp', true, true ); |
| 68 | $this->addOption( 'endtime', 'Ending timestamp', true, true ); |
| 69 | $this->addOption( 'type', 'Comma-separated list of types of changes to send purges for (' . |
| 70 | implode( ',', array_keys( self::$typeMappings ) ) . ',all)', false, true ); |
| 71 | $this->addOption( 'htcp-dest', 'HTCP announcement destination (IP:port)', false, true ); |
| 72 | $this->addOption( 'dry-run', 'Do not send purge requests' ); |
| 73 | $this->addOption( 'sleep-per-batch', 'Milliseconds to sleep between batches', false, true ); |
| 74 | $this->addOption( 'verbose', 'Show more output', false, false, 'v' ); |
| 75 | $this->setBatchSize( 100 ); |
| 76 | } |
| 77 | |
| 78 | public function execute() { |
| 79 | global $wgHTCPRouting; |
| 80 | |
| 81 | if ( $this->hasOption( 'htcp-dest' ) ) { |
| 82 | $parts = explode( ':', $this->getOption( 'htcp-dest' ), 2 ); |
| 83 | if ( count( $parts ) < 2 ) { |
| 84 | // Add default htcp port |
| 85 | $parts[] = '4827'; |
| 86 | } |
| 87 | |
| 88 | // Route all HTCP messages to provided host:port |
| 89 | $wgHTCPRouting = [ |
| 90 | '' => [ 'host' => $parts[0], 'port' => $parts[1] ], |
| 91 | ]; |
| 92 | $this->verbose( "HTCP broadcasts to {$parts[0]}:{$parts[1]}\n" ); |
| 93 | } |
| 94 | |
| 95 | // Find out which actions we should be concerned with |
| 96 | $typeOpt = $this->getOption( 'type', 'all' ); |
| 97 | if ( $typeOpt === 'all' ) { |
| 98 | // Convert 'all' to all registered types |
| 99 | $typeOpt = implode( ',', array_keys( self::$typeMappings ) ); |
| 100 | } |
| 101 | $typeList = explode( ',', $typeOpt ); |
| 102 | foreach ( $typeList as $type ) { |
| 103 | if ( !isset( self::$typeMappings[$type] ) ) { |
| 104 | $this->error( "\nERROR: Unknown type: {$type}\n" ); |
| 105 | $this->maybeHelp( true ); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | // Validate the timestamps |
| 110 | $dbr = $this->getReplicaDB(); |
| 111 | $this->startTimestamp = $dbr->timestamp( $this->getOption( 'starttime' ) ); |
| 112 | $this->endTimestamp = $dbr->timestamp( $this->getOption( 'endtime' ) ); |
| 113 | |
| 114 | if ( $this->startTimestamp > $this->endTimestamp ) { |
| 115 | $this->error( "\nERROR: starttime after endtime\n" ); |
| 116 | $this->maybeHelp( true ); |
| 117 | } |
| 118 | |
| 119 | // Turn on verbose when dry-run is enabled |
| 120 | if ( $this->hasOption( 'dry-run' ) ) { |
| 121 | $this->mOptions['verbose'] = 1; |
| 122 | } |
| 123 | |
| 124 | $this->verbose( 'Purging files that were: ' . implode( ', ', $typeList ) . "\n" ); |
| 125 | foreach ( $typeList as $type ) { |
| 126 | $this->verbose( "Checking for {$type} files...\n" ); |
| 127 | $this->purgeFromLogType( $type ); |
| 128 | if ( !$this->hasOption( 'dry-run' ) ) { |
| 129 | $this->verbose( "...{$type} files purged.\n\n" ); |
| 130 | } |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Purge cache and thumbnails for changes of the given type. |
| 136 | * |
| 137 | * @param string $type Type of change to find |
| 138 | */ |
| 139 | protected function purgeFromLogType( $type ) { |
| 140 | $repo = $this->getServiceContainer()->getRepoGroup()->getLocalRepo(); |
| 141 | $dbr = $this->getReplicaDB(); |
| 142 | |
| 143 | foreach ( self::$typeMappings[$type] as $logType => $logActions ) { |
| 144 | $this->verbose( "Scanning for {$logType}/" . implode( ',', $logActions ) . "\n" ); |
| 145 | |
| 146 | $res = $dbr->newSelectQueryBuilder() |
| 147 | ->select( [ 'log_title', 'log_timestamp', 'log_params' ] ) |
| 148 | ->from( 'logging' ) |
| 149 | ->where( [ |
| 150 | 'log_namespace' => NS_FILE, |
| 151 | 'log_type' => $logType, |
| 152 | 'log_action' => $logActions, |
| 153 | $dbr->expr( 'log_timestamp', '>=', $this->startTimestamp ), |
| 154 | $dbr->expr( 'log_timestamp', '<=', $this->endTimestamp ), |
| 155 | ] ) |
| 156 | ->caller( __METHOD__ )->fetchResultSet(); |
| 157 | |
| 158 | $bSize = 0; |
| 159 | foreach ( $res as $row ) { |
| 160 | $file = $repo->newFile( Title::makeTitle( NS_FILE, $row->log_title ) ); |
| 161 | |
| 162 | if ( $this->hasOption( 'dry-run' ) ) { |
| 163 | $this->verbose( "{$type}[{$row->log_timestamp}]: {$row->log_title}\n" ); |
| 164 | continue; |
| 165 | } |
| 166 | |
| 167 | // Purge current version and its thumbnails |
| 168 | $file->purgeCache(); |
| 169 | // Purge the old versions and their thumbnails |
| 170 | foreach ( $file->getHistory() as $oldFile ) { |
| 171 | $oldFile->purgeCache(); |
| 172 | } |
| 173 | |
| 174 | if ( $logType === 'delete' ) { |
| 175 | // If there is an orphaned storage file... delete it |
| 176 | if ( !$file->exists() && $repo->fileExists( $file->getPath() ) ) { |
| 177 | $dpath = $this->getDeletedPath( $repo, $file ); |
| 178 | if ( $repo->fileExists( $dpath ) ) { |
| 179 | // Check to avoid data loss |
| 180 | $repo->getBackend()->delete( [ 'src' => $file->getPath() ] ); |
| 181 | $this->verbose( "Deleted orphan file: {$file->getPath()}.\n" ); |
| 182 | } else { |
| 183 | $this->error( "File was not deleted: {$file->getPath()}.\n" ); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | // Purge items from fileachive table (rows are likely here) |
| 188 | $this->purgeFromArchiveTable( $repo, $file ); |
| 189 | } elseif ( $logType === 'move' ) { |
| 190 | // Purge the target file as well |
| 191 | |
| 192 | $params = unserialize( $row->log_params ); |
| 193 | if ( isset( $params['4::target'] ) ) { |
| 194 | $target = $params['4::target']; |
| 195 | $targetFile = $repo->newFile( Title::makeTitle( NS_FILE, $target ) ); |
| 196 | $targetFile->purgeCache(); |
| 197 | $this->verbose( "Purged file {$target}; move target @{$row->log_timestamp}.\n" ); |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | $this->verbose( "Purged file {$row->log_title}; {$type} @{$row->log_timestamp}.\n" ); |
| 202 | |
| 203 | if ( $this->hasOption( 'sleep-per-batch' ) && ++$bSize > $this->getBatchSize() ) { |
| 204 | $bSize = 0; |
| 205 | // sleep-per-batch is milliseconds, usleep wants micro seconds. |
| 206 | usleep( 1000 * (int)$this->getOption( 'sleep-per-batch' ) ); |
| 207 | } |
| 208 | } |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | protected function purgeFromArchiveTable( LocalRepo $repo, LocalFile $file ) { |
| 213 | $dbr = $repo->getReplicaDB(); |
| 214 | $res = $dbr->newSelectQueryBuilder() |
| 215 | ->select( [ 'fa_archive_name' ] ) |
| 216 | ->from( 'filearchive' ) |
| 217 | ->where( [ 'fa_name' => $file->getName() ] ) |
| 218 | ->caller( __METHOD__ )->fetchResultSet(); |
| 219 | |
| 220 | foreach ( $res as $row ) { |
| 221 | if ( $row->fa_archive_name === null ) { |
| 222 | // Was not an old version (current version names checked already) |
| 223 | continue; |
| 224 | } |
| 225 | $ofile = $repo->newFromArchiveName( $file->getTitle(), $row->fa_archive_name ); |
| 226 | // If there is an orphaned storage file still there...delete it |
| 227 | if ( !$file->exists() && $repo->fileExists( $ofile->getPath() ) ) { |
| 228 | $dpath = $this->getDeletedPath( $repo, $ofile ); |
| 229 | if ( $repo->fileExists( $dpath ) ) { |
| 230 | // Check to avoid data loss |
| 231 | $repo->getBackend()->delete( [ 'src' => $ofile->getPath() ] ); |
| 232 | $this->output( "Deleted orphan file: {$ofile->getPath()}.\n" ); |
| 233 | } else { |
| 234 | $this->error( "File was not deleted: {$ofile->getPath()}.\n" ); |
| 235 | } |
| 236 | } |
| 237 | $file->purgeOldThumbnails( $row->fa_archive_name ); |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | protected function getDeletedPath( LocalRepo $repo, LocalFile $file ) { |
| 242 | $hash = $repo->getFileSha1( $file->getPath() ); |
| 243 | $key = "{$hash}.{$file->getExtension()}"; |
| 244 | |
| 245 | return $repo->getDeletedHashPath( $key ) . $key; |
| 246 | } |
| 247 | |
| 248 | /** |
| 249 | * Send an output message iff the 'verbose' option has been provided. |
| 250 | * |
| 251 | * @param string $msg Message to output |
| 252 | */ |
| 253 | protected function verbose( $msg ) { |
| 254 | if ( $this->hasOption( 'verbose' ) ) { |
| 255 | $this->output( $msg ); |
| 256 | } |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | $maintClass = PurgeChangedFiles::class; |
| 261 | require_once RUN_MAINTENANCE_IF_MAIN; |