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1<?php
2/**
3 * Prune file cache for pages, objects, resources, etc.
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// @codeCoverageIgnoreStart
25require_once __DIR__ . '/Maintenance.php';
26// @codeCoverageIgnoreEnd
27
28/**
29 * Maintenance script that prunes file cache for pages, objects, resources, etc.
30 *
31 * @ingroup Maintenance
32 */
33class PruneFileCache extends Maintenance {
34
35    /** @var int */
36    protected $minSurviveTimestamp;
37
38    public function __construct() {
39        parent::__construct();
40        $this->addDescription( 'Delete file cache files older than "agedays"' );
41        $this->addOption( 'agedays', 'How many days old files must be in order to delete', true, true );
42        $this->addOption( 'subdir', 'Prune one $wgFileCacheDirectory subdirectory name', false, true );
43    }
44
45    public function execute() {
46        global $wgUseFileCache, $wgFileCacheDirectory;
47
48        if ( !$wgUseFileCache ) {
49            $this->fatalError( "Nothing to do -- \$wgUseFileCache is disabled." );
50        }
51
52        $age = $this->getOption( 'agedays' );
53        if ( !ctype_digit( $age ) ) {
54            $this->fatalError( "Non-integer 'age' parameter given." );
55        }
56        // Delete items with a TS older than this
57        $this->minSurviveTimestamp = time() - ( 86400 * $age );
58
59        $dir = $wgFileCacheDirectory;
60        if ( !is_dir( $dir ) ) {
61            $this->fatalError( "Nothing to do -- \$wgFileCacheDirectory directory not found." );
62        }
63
64        $subDir = $this->getOption( 'subdir' );
65        if ( $subDir !== null ) {
66            if ( !is_dir( "$dir/$subDir" ) ) {
67                $this->fatalError( "The specified subdirectory `$subDir` does not exist." );
68            }
69            $this->output( "Pruning `$dir/$subDir` directory...\n" );
70            $this->prune_directory( "$dir/$subDir", 'report' );
71            $this->output( "Done pruning `$dir/$subDir` directory\n" );
72        } else {
73            $this->output( "Pruning `$dir` directory...\n" );
74            // Note: don't prune things like .cdb files on the top level!
75            $this->prune_directory( $dir, 'report' );
76            $this->output( "Done pruning `$dir` directory\n" );
77        }
78    }
79
80    /**
81     * @param string $dir
82     * @param string|bool $report Use 'report' to report the directories being scanned
83     */
84    protected function prune_directory( $dir, $report = false ) {
85        $tsNow = time();
86        $dirHandle = opendir( $dir );
87        // phpcs:ignore Generic.CodeAnalysis.AssignmentInCondition.FoundInWhileCondition
88        while ( ( $file = readdir( $dirHandle ) ) !== false ) {
89            // Skip ".", "..", and also any dirs or files like ".svn" or ".htaccess"
90            if ( $file[0] != "." ) {
91                // absolute
92                $path = $dir . '/' . $file;
93                if ( is_dir( $path ) ) {
94                    if ( $report === 'report' ) {
95                        $this->output( "Scanning `$path`...\n" );
96                    }
97                    $this->prune_directory( $path );
98                } else {
99                    $mts = filemtime( $path );
100                    // Check the file extension against known cache types
101                    if ( $mts < $this->minSurviveTimestamp
102                        && preg_match( '/\.(?:html|cache)(?:\.gz)?$/', $file )
103                        && unlink( $path )
104                    ) {
105                        $daysOld = round( ( $tsNow - $mts ) / 86400, 2 );
106                        $this->output( "Deleted `$path` [days=$daysOld]\n" );
107                    }
108                }
109            }
110        }
111        closedir( $dirHandle );
112    }
113}
114
115// @codeCoverageIgnoreStart
116$maintClass = PruneFileCache::class;
117require_once RUN_MAINTENANCE_IF_MAIN;
118// @codeCoverageIgnoreEnd