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| 1 | <?php |
| 2 | |
| 3 | use MediaWiki\Content\ContentHandler; |
| 4 | use MediaWiki\Content\TextContent; |
| 5 | use MediaWiki\Context\IContextSource; |
| 6 | use MediaWiki\MediaWikiServices; |
| 7 | use MediaWiki\Parser\Sanitizer; |
| 8 | use MediaWiki\Revision\SlotRecord; |
| 9 | use MediaWiki\Title\Title; |
| 10 | use MediaWiki\User\User; |
| 11 | use Wikimedia\Rdbms\IDBAccessObject; |
| 12 | |
| 13 | class BannerMessage { |
| 14 | |
| 15 | private const SPAN_TAG_PLACEHOLDER_START = '%%%spantagplaceholderstart%%%'; |
| 16 | private const SPAN_TAG_PLACEHOLDER_END = '%%%spantagplaceholderend%%%'; |
| 17 | |
| 18 | public function __construct( |
| 19 | private readonly string $banner_name, |
| 20 | private readonly string $name, |
| 21 | ) { |
| 22 | } |
| 23 | |
| 24 | /** |
| 25 | * @param string $lang |
| 26 | * @param int $namespace |
| 27 | * @return Title|null |
| 28 | */ |
| 29 | public function getTitle( $lang, $namespace = NS_MEDIAWIKI ) { |
| 30 | return Title::newFromText( $this->getDbKey( $lang, $namespace ), $namespace ); |
| 31 | } |
| 32 | |
| 33 | /** |
| 34 | * Obtains the key of the message as stored in the database. This varies depending on namespace |
| 35 | * - in the MediaWiki namespace messages are Centralnotice-{banner name}-{message name}/{lang} |
| 36 | * -- except for the content language which is stored without the /{lang} extension |
| 37 | * - in the CN Banner namespace messages are {banner name}-{message name}/{lang} |
| 38 | * |
| 39 | * @param string|null $lang Language code |
| 40 | * @param int $namespace Namespace to get key for |
| 41 | * |
| 42 | * @return string Message database key |
| 43 | * @throws RangeException |
| 44 | */ |
| 45 | public function getDbKey( $lang = null, $namespace = NS_MEDIAWIKI ) { |
| 46 | global $wgLanguageCode; |
| 47 | |
| 48 | if ( $namespace === NS_MEDIAWIKI ) { |
| 49 | return ( $lang === null || $lang === $wgLanguageCode ) ? |
| 50 | "Centralnotice-{$this->banner_name}-{$this->name}" : |
| 51 | "Centralnotice-{$this->banner_name}-{$this->name}/{$lang}"; |
| 52 | } elseif ( $namespace === NS_CN_BANNER ) { |
| 53 | return "{$this->banner_name}-{$this->name}/{$lang}"; |
| 54 | } else { |
| 55 | throw new RangeException( |
| 56 | "Namespace '$namespace' not known for having CentralNotice messages." |
| 57 | ); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Return the whether the message exists, without language fallback. |
| 63 | * @param string|null $lang |
| 64 | * @return bool |
| 65 | */ |
| 66 | public function existsInLang( $lang ) { |
| 67 | return $this->getTitle( $lang )->exists(); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Obtain the raw contents of the message; stripping out the stupid <message-name> if it's blank |
| 72 | * |
| 73 | * @param null|string $lang |
| 74 | * @return null|string Will be null if the message does not exist, otherwise will be |
| 75 | * the contents of the message. |
| 76 | */ |
| 77 | public function getContents( $lang ) { |
| 78 | if ( $this->existsInLang( $lang ) ) { |
| 79 | $dbKey = $this->getDbKey(); |
| 80 | $revisionLookup = MediaWikiServices::getInstance()->getRevisionLookup(); |
| 81 | $rev = $revisionLookup->getRevisionByTitle( $this->getTitle( $lang ) ); |
| 82 | |
| 83 | if ( !$rev ) { |
| 84 | // Try harder, might have just been created, otherwise the title wouldn't exist |
| 85 | $rev = $revisionLookup->getRevisionByTitle( |
| 86 | $this->getTitle( $lang ), |
| 87 | IDBAccessObject::READ_LATEST |
| 88 | ); |
| 89 | } |
| 90 | |
| 91 | if ( !$rev ) { |
| 92 | return null; |
| 93 | } |
| 94 | |
| 95 | $content = $rev->getContent( SlotRecord::MAIN ); |
| 96 | /** @var TextContent $content */ |
| 97 | '@phan-var TextContent $content'; |
| 98 | $msg = $content->getText(); |
| 99 | if ( $msg === "<{$dbKey}>" ) { |
| 100 | $msg = ''; |
| 101 | } |
| 102 | return $msg; |
| 103 | } else { |
| 104 | return null; |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | public function toHtml( IContextSource $context ): string { |
| 109 | global $wgNoticeUseLanguageConversion; |
| 110 | $lang = $context->getLanguage(); |
| 111 | if ( $wgNoticeUseLanguageConversion ) { |
| 112 | $lang = MediaWikiServices::getInstance()->getLanguageFactory() |
| 113 | ->getParentLanguage( $lang->getCode() ) ?? $lang; |
| 114 | } |
| 115 | |
| 116 | $text = self::sanitize( |
| 117 | $context->msg( $this->getDbKey() )->inLanguage( $lang )->text() ); |
| 118 | |
| 119 | return $text; |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Add or update message contents |
| 124 | * @param string $translation |
| 125 | * @param string|null $lang |
| 126 | * @param User $user |
| 127 | * @param string|null $summary |
| 128 | */ |
| 129 | public function update( $translation, $lang, $user, $summary = null ) { |
| 130 | global $wgNoticeUseTranslateExtension, $wgLanguageCode; |
| 131 | |
| 132 | if ( $summary === null ) { |
| 133 | // default edit summary |
| 134 | // TODO make this consistent throughout CN |
| 135 | $summary = '/* CN admin */'; |
| 136 | } |
| 137 | |
| 138 | $savePage = static function ( $title, $text ) use ( $summary, $user ) { |
| 139 | $wikiPage = MediaWikiServices::getInstance()->getWikiPageFactory()->newFromTitle( $title ); |
| 140 | |
| 141 | $content = ContentHandler::makeContent( $text, $title ); |
| 142 | $tags = [ 'centralnotice' ]; |
| 143 | $wikiPage->doUserEditContent( |
| 144 | $content, |
| 145 | $user, |
| 146 | $summary, |
| 147 | EDIT_FORCE_BOT, |
| 148 | false, |
| 149 | $tags |
| 150 | ); |
| 151 | |
| 152 | return $wikiPage; |
| 153 | }; |
| 154 | |
| 155 | $page = $savePage( $this->getTitle( $lang ), $translation ); |
| 156 | Banner::protectBannerContent( $page, $user ); |
| 157 | |
| 158 | // If we're using translate : group review; create and protect the english page |
| 159 | if ( $wgNoticeUseTranslateExtension |
| 160 | && ( $lang === $wgLanguageCode ) |
| 161 | && BannerMessageGroup::isUsingGroupReview() |
| 162 | ) { |
| 163 | $page = $savePage( $this->getTitle( $lang, NS_CN_BANNER ), $translation ); |
| 164 | Banner::protectBannerContent( $page, $user ); |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | public static function sanitize( string $text ): string { |
| 169 | // First, remove any occurrences of the placeholders used to preserve span tags. |
| 170 | $text = str_replace( self::SPAN_TAG_PLACEHOLDER_START, '', $text ); |
| 171 | $text = str_replace( self::SPAN_TAG_PLACEHOLDER_END, '', $text ); |
| 172 | |
| 173 | // Remove and save <span> tags so they don't get removed by sanitization; allow |
| 174 | // only class attributes. |
| 175 | $spanTags = []; |
| 176 | $text = preg_replace_callback( |
| 177 | '/(<\/?span\s*(?:class\s?=\s?([\'"])[a-zA-Z0-9_ -]+(\2))?\s*>)/', |
| 178 | static function ( $matches ) use ( &$spanTags ) { |
| 179 | $spanTags[] = $matches[ 1 ]; |
| 180 | return BannerMessage::SPAN_TAG_PLACEHOLDER_START . |
| 181 | ( count( $spanTags ) - 1 ) . |
| 182 | BannerMessage::SPAN_TAG_PLACEHOLDER_END; |
| 183 | }, |
| 184 | $text |
| 185 | ); |
| 186 | |
| 187 | $text = Sanitizer::stripAllTags( $text ); |
| 188 | $text = Sanitizer::escapeHtmlAllowEntities( $text ); |
| 189 | |
| 190 | // Restore span tags |
| 191 | $text = preg_replace_callback( |
| 192 | '/(?:' . self::SPAN_TAG_PLACEHOLDER_START . '(\d+)' . |
| 193 | self::SPAN_TAG_PLACEHOLDER_END . ')/', |
| 194 | |
| 195 | static function ( $matches ) use ( $spanTags ) { |
| 196 | $index = (int)$matches[ 1 ]; |
| 197 | // This should never happen, but let's be safe. |
| 198 | if ( !isset( $spanTags[ $index ] ) ) { |
| 199 | return ''; |
| 200 | } |
| 201 | return $spanTags[ $index ]; |
| 202 | }, |
| 203 | |
| 204 | $text |
| 205 | ); |
| 206 | |
| 207 | return $text; |
| 208 | } |
| 209 | } |