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| 1 | <?php |
| 2 | /** |
| 3 | * Clean up broken, unparseable upload filenames. |
| 4 | * |
| 5 | * Copyright © 2005-2006 Brooke Vibber <bvibber@wikimedia.org> |
| 6 | * https://www.mediawiki.org/ |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 21 | * http://www.gnu.org/copyleft/gpl.html |
| 22 | * |
| 23 | * @file |
| 24 | * @author Brooke Vibber <bvibber@wikimedia.org> |
| 25 | * @ingroup Maintenance |
| 26 | */ |
| 27 | |
| 28 | use MediaWiki\Parser\Sanitizer; |
| 29 | use MediaWiki\Title\Title; |
| 30 | |
| 31 | require_once __DIR__ . '/TableCleanup.php'; |
| 32 | |
| 33 | /** |
| 34 | * Maintenance script to clean up broken, unparseable upload filenames. |
| 35 | * |
| 36 | * @ingroup Maintenance |
| 37 | */ |
| 38 | class CleanupImages extends TableCleanup { |
| 39 | protected $defaultParams = [ |
| 40 | 'table' => 'image', |
| 41 | 'conds' => [], |
| 42 | 'index' => 'img_name', |
| 43 | 'callback' => 'processRow', |
| 44 | ]; |
| 45 | |
| 46 | /** @var LocalRepo|null */ |
| 47 | private $repo; |
| 48 | |
| 49 | public function __construct() { |
| 50 | parent::__construct(); |
| 51 | $this->addDescription( 'Script to clean up broken, unparseable upload filenames' ); |
| 52 | } |
| 53 | |
| 54 | protected function processRow( $row ) { |
| 55 | $source = $row->img_name; |
| 56 | if ( $source == '' ) { |
| 57 | // Ye olde empty rows. Just kill them. |
| 58 | $this->killRow( $source ); |
| 59 | |
| 60 | $this->progress( 1 ); |
| 61 | return; |
| 62 | } |
| 63 | |
| 64 | $cleaned = $source; |
| 65 | |
| 66 | // About half of old bad image names have percent-codes |
| 67 | $cleaned = rawurldecode( $cleaned ); |
| 68 | |
| 69 | // We also have some HTML entities there |
| 70 | $cleaned = Sanitizer::decodeCharReferences( $cleaned ); |
| 71 | |
| 72 | $contLang = $this->getServiceContainer()->getContentLanguage(); |
| 73 | |
| 74 | // Some are old latin-1 |
| 75 | $cleaned = $contLang->checkTitleEncoding( $cleaned ); |
| 76 | |
| 77 | // Many of remainder look like non-normalized unicode |
| 78 | $cleaned = $contLang->normalize( $cleaned ); |
| 79 | |
| 80 | $title = Title::makeTitleSafe( NS_FILE, $cleaned ); |
| 81 | |
| 82 | if ( $title === null ) { |
| 83 | $this->output( "page $source ($cleaned) is illegal.\n" ); |
| 84 | $safe = $this->buildSafeTitle( $cleaned ); |
| 85 | if ( $safe === false ) { |
| 86 | $this->progress( 0 ); |
| 87 | return; |
| 88 | } |
| 89 | $this->pokeFile( $source, $safe ); |
| 90 | |
| 91 | $this->progress( 1 ); |
| 92 | return; |
| 93 | } |
| 94 | |
| 95 | if ( $title->getDBkey() !== $source ) { |
| 96 | $munged = $title->getDBkey(); |
| 97 | $this->output( "page $source ($munged) doesn't match self.\n" ); |
| 98 | $this->pokeFile( $source, $munged ); |
| 99 | |
| 100 | $this->progress( 1 ); |
| 101 | return; |
| 102 | } |
| 103 | |
| 104 | $this->progress( 0 ); |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * @param string $name |
| 109 | */ |
| 110 | private function killRow( $name ) { |
| 111 | if ( $this->dryrun ) { |
| 112 | $this->output( "DRY RUN: would delete bogus row '$name'\n" ); |
| 113 | } else { |
| 114 | $this->output( "deleting bogus row '$name'\n" ); |
| 115 | $db = $this->getPrimaryDB(); |
| 116 | $db->newDeleteQueryBuilder() |
| 117 | ->deleteFrom( 'image' ) |
| 118 | ->where( [ 'img_name' => $name ] ) |
| 119 | ->caller( __METHOD__ ) |
| 120 | ->execute(); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | /** |
| 125 | * @param string $name |
| 126 | * @return string |
| 127 | */ |
| 128 | private function filePath( $name ) { |
| 129 | if ( $this->repo === null ) { |
| 130 | $this->repo = $this->getServiceContainer()->getRepoGroup()->getLocalRepo(); |
| 131 | } |
| 132 | |
| 133 | return $this->repo->getRootDirectory() . '/' . $this->repo->getHashPath( $name ) . $name; |
| 134 | } |
| 135 | |
| 136 | private function imageExists( $name, $db ) { |
| 137 | return (bool)$db->newSelectQueryBuilder() |
| 138 | ->select( '1' ) |
| 139 | ->from( 'image' ) |
| 140 | ->where( [ 'img_name' => $name ] ) |
| 141 | ->caller( __METHOD__ ) |
| 142 | ->fetchField(); |
| 143 | } |
| 144 | |
| 145 | private function pageExists( $name, $db ) { |
| 146 | return (bool)$db->newSelectQueryBuilder() |
| 147 | ->select( '1' ) |
| 148 | ->from( 'page' ) |
| 149 | ->where( [ |
| 150 | 'page_namespace' => NS_FILE, |
| 151 | 'page_title' => $name, |
| 152 | ] ) |
| 153 | ->caller( __METHOD__ ) |
| 154 | ->fetchField(); |
| 155 | } |
| 156 | |
| 157 | private function pokeFile( $orig, $new ) { |
| 158 | $path = $this->filePath( $orig ); |
| 159 | if ( !file_exists( $path ) ) { |
| 160 | $this->output( "missing file: $path\n" ); |
| 161 | $this->killRow( $orig ); |
| 162 | |
| 163 | return; |
| 164 | } |
| 165 | |
| 166 | $db = $this->getPrimaryDB(); |
| 167 | |
| 168 | /* |
| 169 | * To prevent key collisions in the update() statements below, |
| 170 | * if the target title exists in the image table, or if both the |
| 171 | * original and target titles exist in the page table, append |
| 172 | * increasing version numbers until the target title exists in |
| 173 | * neither. (See also T18916.) |
| 174 | */ |
| 175 | $version = 0; |
| 176 | $final = $new; |
| 177 | $conflict = ( $this->imageExists( $final, $db ) || |
| 178 | ( $this->pageExists( $orig, $db ) && $this->pageExists( $final, $db ) ) ); |
| 179 | |
| 180 | while ( $conflict ) { |
| 181 | $this->output( "Rename conflicts with '$final'...\n" ); |
| 182 | $version++; |
| 183 | $final = $this->appendTitle( $new, "_$version" ); |
| 184 | $conflict = ( $this->imageExists( $final, $db ) || $this->pageExists( $final, $db ) ); |
| 185 | } |
| 186 | |
| 187 | $finalPath = $this->filePath( $final ); |
| 188 | |
| 189 | if ( $this->dryrun ) { |
| 190 | $this->output( "DRY RUN: would rename $path to $finalPath\n" ); |
| 191 | } else { |
| 192 | $this->output( "renaming $path to $finalPath\n" ); |
| 193 | // @todo FIXME: Should this use File::move()? |
| 194 | $this->beginTransaction( $db, __METHOD__ ); |
| 195 | $db->newUpdateQueryBuilder() |
| 196 | ->update( 'image' ) |
| 197 | ->set( [ 'img_name' => $final ] ) |
| 198 | ->where( [ 'img_name' => $orig ] ) |
| 199 | ->caller( __METHOD__ ) |
| 200 | ->execute(); |
| 201 | $db->newUpdateQueryBuilder() |
| 202 | ->update( 'oldimage' ) |
| 203 | ->set( [ 'oi_name' => $final ] ) |
| 204 | ->where( [ 'oi_name' => $orig ] ) |
| 205 | ->caller( __METHOD__ ) |
| 206 | ->execute(); |
| 207 | $db->newUpdateQueryBuilder() |
| 208 | ->update( 'page' ) |
| 209 | ->set( [ 'page_title' => $final ] ) |
| 210 | ->where( [ 'page_title' => $orig, 'page_namespace' => NS_FILE ] ) |
| 211 | ->caller( __METHOD__ ) |
| 212 | ->execute(); |
| 213 | $dir = dirname( $finalPath ); |
| 214 | if ( !file_exists( $dir ) ) { |
| 215 | if ( !wfMkdirParents( $dir, null, __METHOD__ ) ) { |
| 216 | $this->output( "RENAME FAILED, COULD NOT CREATE $dir" ); |
| 217 | $this->rollbackTransaction( $db, __METHOD__ ); |
| 218 | |
| 219 | return; |
| 220 | } |
| 221 | } |
| 222 | if ( rename( $path, $finalPath ) ) { |
| 223 | $this->commitTransaction( $db, __METHOD__ ); |
| 224 | } else { |
| 225 | $this->error( "RENAME FAILED" ); |
| 226 | $this->rollbackTransaction( $db, __METHOD__ ); |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | private function appendTitle( $name, $suffix ) { |
| 232 | return preg_replace( '/^(.*)(\..*?)$/', |
| 233 | "\\1$suffix\\2", $name ); |
| 234 | } |
| 235 | |
| 236 | private function buildSafeTitle( $name ) { |
| 237 | $x = preg_replace_callback( |
| 238 | '/([^' . Title::legalChars() . ']|~)/', |
| 239 | [ $this, 'hexChar' ], |
| 240 | $name ); |
| 241 | |
| 242 | $test = Title::makeTitleSafe( NS_FILE, $x ); |
| 243 | if ( $test === null || $test->getDBkey() !== $x ) { |
| 244 | $this->error( "Unable to generate safe title from '$name', got '$x'" ); |
| 245 | |
| 246 | return false; |
| 247 | } |
| 248 | |
| 249 | return $x; |
| 250 | } |
| 251 | } |
| 252 | |
| 253 | $maintClass = CleanupImages::class; |
| 254 | require_once RUN_MAINTENANCE_IF_MAIN; |