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| 1 | <?php |
| 2 | |
| 3 | namespace FileImporter\Services; |
| 4 | |
| 5 | use FileImporter\Data\ImportDetails; |
| 6 | use FileImporter\Data\ImportPlan; |
| 7 | use FileImporter\Data\WikitextConversions; |
| 8 | use FileImporter\Exceptions\DuplicateFilesException; |
| 9 | use FileImporter\Exceptions\LocalizedImportException; |
| 10 | use FileImporter\Exceptions\RecoverableTitleException; |
| 11 | use FileImporter\Exceptions\TitleException; |
| 12 | use FileImporter\Interfaces\ImportTitleChecker; |
| 13 | use FileImporter\Remote\MediaWiki\CommonsHelperConfigRetriever; |
| 14 | use FileImporter\Services\UploadBase\UploadBaseFactory; |
| 15 | use FileImporter\Services\Wikitext\CommonsHelperConfigParser; |
| 16 | use FileImporter\Services\Wikitext\WikiLinkParserFactory; |
| 17 | use FileImporter\Services\Wikitext\WikitextContentCleaner; |
| 18 | use MediaWiki\Context\RequestContext; |
| 19 | use MediaWiki\MainConfigNames; |
| 20 | use MediaWiki\MediaWikiServices; |
| 21 | use MediaWiki\Permissions\Authority; |
| 22 | use MediaWiki\Permissions\PermissionStatus; |
| 23 | use MediaWiki\Permissions\RestrictionStore; |
| 24 | use MediaWiki\Title\MalformedTitleException; |
| 25 | use MediaWiki\Title\Title; |
| 26 | use UploadBase; |
| 27 | |
| 28 | /** |
| 29 | * @license GPL-2.0-or-later |
| 30 | * @author Addshore |
| 31 | */ |
| 32 | class ImportPlanValidator { |
| 33 | |
| 34 | private DuplicateFileRevisionChecker $duplicateFileChecker; |
| 35 | private ImportTitleChecker $importTitleChecker; |
| 36 | private UploadBaseFactory $uploadBaseFactory; |
| 37 | private ?CommonsHelperConfigRetriever $commonsHelperConfigRetriever; |
| 38 | /** @var string|null */ |
| 39 | private $commonsHelperHelpPage; |
| 40 | private WikiLinkParserFactory $wikiLinkParserFactory; |
| 41 | private RestrictionStore $restrictionStore; |
| 42 | |
| 43 | /** |
| 44 | * @param DuplicateFileRevisionChecker $duplicateFileChecker |
| 45 | * @param ImportTitleChecker $importTitleChecker |
| 46 | * @param UploadBaseFactory $uploadBaseFactory |
| 47 | * @param CommonsHelperConfigRetriever|null $commonsHelperConfigRetriever |
| 48 | * @param string|null $commonsHelperHelpPage |
| 49 | * @param WikiLinkParserFactory $wikiLinkParserFactory |
| 50 | * @param RestrictionStore $restrictionStore |
| 51 | */ |
| 52 | public function __construct( |
| 53 | DuplicateFileRevisionChecker $duplicateFileChecker, |
| 54 | ImportTitleChecker $importTitleChecker, |
| 55 | UploadBaseFactory $uploadBaseFactory, |
| 56 | ?CommonsHelperConfigRetriever $commonsHelperConfigRetriever, |
| 57 | $commonsHelperHelpPage, |
| 58 | WikiLinkParserFactory $wikiLinkParserFactory, |
| 59 | RestrictionStore $restrictionStore |
| 60 | ) { |
| 61 | $this->duplicateFileChecker = $duplicateFileChecker; |
| 62 | $this->importTitleChecker = $importTitleChecker; |
| 63 | $this->uploadBaseFactory = $uploadBaseFactory; |
| 64 | $this->commonsHelperConfigRetriever = $commonsHelperConfigRetriever; |
| 65 | $this->commonsHelperHelpPage = $commonsHelperHelpPage; |
| 66 | $this->wikiLinkParserFactory = $wikiLinkParserFactory; |
| 67 | $this->restrictionStore = $restrictionStore; |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Validate the ImportPlan by running various checks. |
| 72 | * The order of the checks is vaguely important as some can be actively solved in the extension |
| 73 | * and others cannot. |
| 74 | * It's frustrating to the user if they fix one thing, only to be shown another error that |
| 75 | * cannot be easily fixed. |
| 76 | * |
| 77 | * @param ImportPlan $importPlan The plan to be validated |
| 78 | * @param Authority $user User that executes the import |
| 79 | * |
| 80 | * @throws TitleException When there is a problem with the planned title (can't be fixed easily). |
| 81 | * @throws DuplicateFilesException When a file with the same hash is detected locally.. |
| 82 | * @throws RecoverableTitleException When there is a problem with the title that can be fixed. |
| 83 | */ |
| 84 | public function validate( ImportPlan $importPlan, Authority $user ) { |
| 85 | // Have to run this first because other tests don't make sense without basic title sanity. |
| 86 | $this->runBasicTitleCheck( $importPlan ); |
| 87 | |
| 88 | // Unrecoverable errors |
| 89 | $this->runPermissionTitleChecks( $importPlan, $user ); |
| 90 | $this->runFileExtensionCheck( $importPlan ); |
| 91 | $this->runDuplicateFilesCheck( $importPlan ); |
| 92 | |
| 93 | // Conversions |
| 94 | $this->runCommonsHelperChecksAndConversions( $importPlan ); |
| 95 | $this->runWikiLinkConversions( $importPlan ); |
| 96 | |
| 97 | // Solvable errors |
| 98 | $this->warnOnAutomaticTitleChanges( $importPlan ); |
| 99 | $this->runFileTitleCheck( $importPlan ); |
| 100 | $this->runLocalTitleConflictCheck( $importPlan ); |
| 101 | $this->runRemoteTitleConflictCheck( $importPlan ); |
| 102 | } |
| 103 | |
| 104 | private function runCommonsHelperChecksAndConversions( ImportPlan $importPlan ): void { |
| 105 | if ( !$this->commonsHelperConfigRetriever ) { |
| 106 | return; |
| 107 | } |
| 108 | |
| 109 | $details = $importPlan->getDetails(); |
| 110 | $sourceUrl = $details->getSourceUrl(); |
| 111 | |
| 112 | if ( !$this->commonsHelperConfigRetriever->retrieveConfiguration( $sourceUrl ) ) { |
| 113 | throw new LocalizedImportException( [ |
| 114 | 'fileimporter-commonshelper-missing-config', |
| 115 | $sourceUrl->getHost(), |
| 116 | $this->commonsHelperHelpPage |
| 117 | ] ); |
| 118 | } |
| 119 | |
| 120 | $commonHelperConfigParser = new CommonsHelperConfigParser( |
| 121 | $this->commonsHelperConfigRetriever->getConfigWikiUrl(), |
| 122 | $this->commonsHelperConfigRetriever->getConfigWikitext() |
| 123 | ); |
| 124 | |
| 125 | $this->runLicenseChecks( $details, $commonHelperConfigParser->getWikitextConversions() ); |
| 126 | $this->cleanWikitext( $importPlan, $commonHelperConfigParser->getWikitextConversions() ); |
| 127 | } |
| 128 | |
| 129 | private function runLicenseChecks( ImportDetails $details, WikitextConversions $conversions ): void { |
| 130 | $validator = new FileDescriptionPageValidator( $conversions ); |
| 131 | $validator->hasRequiredTemplate( $details->getTemplates() ); |
| 132 | $validator->validateTemplates( $details->getTemplates() ); |
| 133 | $validator->validateCategories( $details->getCategories() ); |
| 134 | } |
| 135 | |
| 136 | private function cleanWikitext( ImportPlan $importPlan, WikitextConversions $conversions ): void { |
| 137 | $wikitext = $importPlan->getCleanedLatestRevisionText(); |
| 138 | $cleaner = new WikitextContentCleaner( $conversions ); |
| 139 | |
| 140 | $sourceLanguage = $importPlan->getDetails()->getPageLanguage(); |
| 141 | if ( $sourceLanguage ) { |
| 142 | $languageTemplate = Title::makeTitleSafe( NS_TEMPLATE, $sourceLanguage ); |
| 143 | if ( $languageTemplate->exists() ) { |
| 144 | $cleaner->setSourceWikiLanguageTemplate( $sourceLanguage ); |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | $importPlan->setCleanedLatestRevisionText( $cleaner->cleanWikitext( $wikitext ) ); |
| 149 | $importPlan->setNumberOfTemplateReplacements( $cleaner->getLatestNumberOfReplacements() ); |
| 150 | } |
| 151 | |
| 152 | private function runWikiLinkConversions( ImportPlan $importPlan ): void { |
| 153 | $parser = $this->wikiLinkParserFactory->getWikiLinkParser( |
| 154 | $importPlan->getDetails()->getPageLanguage(), |
| 155 | $importPlan->getInterWikiPrefix() |
| 156 | ); |
| 157 | $wikitext = $importPlan->getCleanedLatestRevisionText(); |
| 158 | $importPlan->setCleanedLatestRevisionText( $parser->parse( $wikitext ) ); |
| 159 | } |
| 160 | |
| 161 | private function runBasicTitleCheck( ImportPlan $importPlan ): void { |
| 162 | try { |
| 163 | $importPlan->getTitle(); |
| 164 | } catch ( MalformedTitleException $e ) { |
| 165 | throw new RecoverableTitleException( |
| 166 | [ $e->getErrorMessage(), ...$e->getErrorMessageParameters() ], |
| 167 | $importPlan, |
| 168 | $e |
| 169 | ); |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | private function warnOnAutomaticTitleChanges( ImportPlan $importPlan ): void { |
| 174 | if ( $importPlan->getRequest()->getIntendedName() !== null && |
| 175 | $importPlan->getFileName() !== $importPlan->getRequest()->getIntendedName() |
| 176 | ) { |
| 177 | throw new RecoverableTitleException( |
| 178 | [ |
| 179 | 'fileimporter-filenameerror-automaticchanges', |
| 180 | $importPlan->getRequest()->getIntendedName(), |
| 181 | $importPlan->getFileName() |
| 182 | ], |
| 183 | $importPlan |
| 184 | ); |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | private function runPermissionTitleChecks( ImportPlan $importPlan, Authority $user ): void { |
| 189 | $title = $importPlan->getTitle(); |
| 190 | |
| 191 | /** |
| 192 | * {@see UploadBase::verifyTitlePermissions} |
| 193 | */ |
| 194 | $status = PermissionStatus::newEmpty(); |
| 195 | $user->authorizeWrite( 'edit', $title, $status ); |
| 196 | $user->authorizeWrite( 'upload', $title, $status ); |
| 197 | if ( !$status->isGood() ) { |
| 198 | $permErrors = $status->toLegacyErrorArray(); |
| 199 | throw new RecoverableTitleException( $permErrors[0], $importPlan ); |
| 200 | } |
| 201 | |
| 202 | // Even administrators should not (accidentally) move a file to a protected file name |
| 203 | if ( $this->restrictionStore->isProtected( $title ) ) { |
| 204 | throw new RecoverableTitleException( 'fileimporter-filenameerror-protected', $importPlan ); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * @return string |
| 210 | */ |
| 211 | private function getAllowedFileExtensions() { |
| 212 | $config = MediaWikiServices::getInstance()->getMainConfig(); |
| 213 | $fileExtensions = array_unique( $config->get( MainConfigNames::FileExtensions ) ); |
| 214 | $language = RequestContext::getMain()->getLanguage(); |
| 215 | return $language->listToText( $fileExtensions ); |
| 216 | } |
| 217 | |
| 218 | private function runFileTitleCheck( ImportPlan $importPlan ): void { |
| 219 | $plannedTitleText = $importPlan->getTitle()->getText(); |
| 220 | if ( $plannedTitleText != wfStripIllegalFilenameChars( $plannedTitleText ) ) { |
| 221 | throw new RecoverableTitleException( |
| 222 | 'fileimporter-illegalfilenamechars', |
| 223 | $importPlan |
| 224 | ); |
| 225 | } |
| 226 | |
| 227 | $base = $this->uploadBaseFactory->newValidatingUploadBase( |
| 228 | $importPlan->getTitle(), |
| 229 | '' |
| 230 | ); |
| 231 | switch ( $base->validateTitle() ) { |
| 232 | case UploadBase::OK: |
| 233 | return; |
| 234 | |
| 235 | case UploadBase::FILETYPE_BADTYPE: |
| 236 | // Stop the import early if the extension is not allowed on the destination wiki |
| 237 | throw new TitleException( [ |
| 238 | 'fileimporter-filenameerror-notallowed', |
| 239 | $importPlan->getFileExtension(), |
| 240 | $this->getAllowedFileExtensions() |
| 241 | ] ); |
| 242 | |
| 243 | case UploadBase::ILLEGAL_FILENAME: |
| 244 | $errorMessage = 'fileimporter-filenameerror-illegal'; |
| 245 | break; |
| 246 | case UploadBase::FILENAME_TOO_LONG: |
| 247 | $errorMessage = 'fileimporter-filenameerror-toolong'; |
| 248 | break; |
| 249 | default: |
| 250 | $errorMessage = 'fileimporter-filenameerror-default'; |
| 251 | break; |
| 252 | } |
| 253 | throw new RecoverableTitleException( $errorMessage, $importPlan ); |
| 254 | } |
| 255 | |
| 256 | private function runFileExtensionCheck( ImportPlan $importPlan ): void { |
| 257 | $sourcePathInfo = pathinfo( $importPlan->getDetails()->getSourceLinkTarget()->getText() ); |
| 258 | $plannedPathInfo = pathinfo( $importPlan->getTitle()->getText() ); |
| 259 | |
| 260 | // Check that both the source and planned titles have extensions |
| 261 | if ( !array_key_exists( 'extension', $sourcePathInfo ) ) { |
| 262 | throw new TitleException( 'fileimporter-filenameerror-nosourceextension' ); |
| 263 | } |
| 264 | if ( !array_key_exists( 'extension', $plannedPathInfo ) ) { |
| 265 | throw new TitleException( 'fileimporter-filenameerror-noplannedextension' ); |
| 266 | } |
| 267 | |
| 268 | // Check to ensure files are not imported with differing file extensions. |
| 269 | if ( |
| 270 | strtolower( $sourcePathInfo['extension'] ) !== |
| 271 | strtolower( $plannedPathInfo['extension'] ) |
| 272 | ) { |
| 273 | throw new TitleException( 'fileimporter-filenameerror-missmatchextension' ); |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | private function runDuplicateFilesCheck( ImportPlan $importPlan ): void { |
| 278 | $duplicateFiles = $this->duplicateFileChecker->findDuplicates( |
| 279 | $importPlan->getDetails()->getFileRevisions()->getLatest() |
| 280 | ); |
| 281 | |
| 282 | if ( $duplicateFiles !== [] ) { |
| 283 | throw new DuplicateFilesException( $duplicateFiles ); |
| 284 | } |
| 285 | } |
| 286 | |
| 287 | private function runLocalTitleConflictCheck( ImportPlan $importPlan ): void { |
| 288 | if ( $importPlan->getTitle()->exists() ) { |
| 289 | throw new RecoverableTitleException( |
| 290 | 'fileimporter-localtitleexists', |
| 291 | $importPlan |
| 292 | ); |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | private function runRemoteTitleConflictCheck( ImportPlan $importPlan ): void { |
| 297 | $request = $importPlan->getRequest(); |
| 298 | $details = $importPlan->getDetails(); |
| 299 | $title = $importPlan->getTitle(); |
| 300 | |
| 301 | // Only check remotely if the title has been changed, if it is the same assume this is |
| 302 | // okay / intended / other checks have happened. |
| 303 | if ( |
| 304 | $title->getText() !== $details->getSourceLinkTarget()->getText() && |
| 305 | !$this->importTitleChecker->importAllowed( $request->getUrl(), $title->getText() ) |
| 306 | ) { |
| 307 | throw new RecoverableTitleException( |
| 308 | 'fileimporter-sourcetitleexists', |
| 309 | $importPlan |
| 310 | ); |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | } |