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| 1 | <?php |
| 2 | /** |
| 3 | * Hooks for managing JSON Schema namespace and content model. |
| 4 | * |
| 5 | * @file |
| 6 | * @ingroup Extensions |
| 7 | * @ingroup EventLogging |
| 8 | * |
| 9 | * @author Ori Livneh <ori@wikimedia.org> |
| 10 | */ |
| 11 | |
| 12 | // phpcs:disable MediaWiki.NamingConventions.LowerCamelFunctionsName.FunctionName |
| 13 | |
| 14 | namespace MediaWiki\Extension\EventLogging; |
| 15 | |
| 16 | use MediaWiki\Api\ApiModuleManager; |
| 17 | use MediaWiki\Api\Hook\ApiMain__moduleManagerHook; |
| 18 | use MediaWiki\Content\Content; |
| 19 | use MediaWiki\Context\IContextSource; |
| 20 | use MediaWiki\EditPage\EditPage; |
| 21 | use MediaWiki\Extension\EventLogging\Libs\JsonSchemaValidation\JsonSchemaException; |
| 22 | use MediaWiki\Hook\EditFilterMergedContentHook; |
| 23 | use MediaWiki\Hook\MovePageIsValidMoveHook; |
| 24 | use MediaWiki\Output\Hook\BeforePageDisplayHook; |
| 25 | use MediaWiki\Output\OutputPage; |
| 26 | use MediaWiki\Status\Status; |
| 27 | use MediaWiki\Title\Title; |
| 28 | use MediaWiki\User\User; |
| 29 | use Skin; |
| 30 | |
| 31 | class JsonSchemaHooks implements |
| 32 | BeforePageDisplayHook, |
| 33 | EditFilterMergedContentHook, |
| 34 | MovePageIsValidMoveHook, |
| 35 | ApiMain__moduleManagerHook |
| 36 | { |
| 37 | |
| 38 | /** |
| 39 | * Convenience function to determine whether the |
| 40 | * Schema namespace is enabled |
| 41 | * |
| 42 | * @return bool |
| 43 | */ |
| 44 | public static function isSchemaNamespaceEnabled() { |
| 45 | global $wgEventLoggingDBname, $wgDBname; |
| 46 | |
| 47 | return $wgEventLoggingDBname === $wgDBname; |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * ApiMain::moduleManager hook to register jsonschema |
| 52 | * API module only if the Schema namespace is enabled |
| 53 | * |
| 54 | * @param ApiModuleManager $moduleManager |
| 55 | */ |
| 56 | public function onApiMain__moduleManager( $moduleManager ): void { |
| 57 | if ( self::isSchemaNamespaceEnabled() ) { |
| 58 | $moduleManager->addModule( |
| 59 | 'jsonschema', |
| 60 | 'action', |
| 61 | ApiJsonSchema::class |
| 62 | ); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Declares JSON as the code editor language for Schema: pages. |
| 68 | * This hook only runs if the CodeEditor extension is enabled. |
| 69 | * |
| 70 | * @param Title $title |
| 71 | * @param string &$lang Page language. |
| 72 | */ |
| 73 | public static function onCodeEditorGetPageLanguage( $title, &$lang ): void { |
| 74 | if ( self::isSchemaNamespaceEnabled() |
| 75 | && $title->inNamespace( NS_SCHEMA ) |
| 76 | ) { |
| 77 | $lang = 'json'; |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Validates that the revised contents are valid JSON. |
| 83 | * If not valid, rejects edit with error message. |
| 84 | * |
| 85 | * @param IContextSource $context |
| 86 | * @param Content $content |
| 87 | * @param Status $status |
| 88 | * @param string $summary |
| 89 | * @param User $user |
| 90 | * @param bool $minoredit |
| 91 | * @return bool |
| 92 | */ |
| 93 | public function onEditFilterMergedContent( |
| 94 | IContextSource $context, |
| 95 | Content $content, |
| 96 | Status $status, |
| 97 | $summary, |
| 98 | User $user, |
| 99 | $minoredit |
| 100 | ): bool { |
| 101 | $title = $context->getTitle(); |
| 102 | |
| 103 | if ( !self::isSchemaNamespaceEnabled() |
| 104 | || !$title->inNamespace( NS_SCHEMA ) |
| 105 | ) { |
| 106 | return true; |
| 107 | } |
| 108 | |
| 109 | if ( !preg_match( '/^[a-zA-Z0-9_-]{1,63}$/', $title->getText() ) ) { |
| 110 | $status->fatal( 'badtitle' ); |
| 111 | // @todo Remove this line after this extension do not support mediawiki version 1.36 and before |
| 112 | $status->value = EditPage::AS_HOOK_ERROR_EXPECTED; |
| 113 | return false; |
| 114 | } |
| 115 | |
| 116 | if ( !$content instanceof JsonSchemaContent ) { |
| 117 | return true; |
| 118 | } |
| 119 | |
| 120 | try { |
| 121 | $content->validate(); |
| 122 | return true; |
| 123 | } catch ( JsonSchemaException $e ) { |
| 124 | $status->fatal( $context->msg( $e->getCode(), $e->args ) ); |
| 125 | // @todo Remove this line after this extension do not support mediawiki version 1.36 and before |
| 126 | $status->value = EditPage::AS_HOOK_ERROR_EXPECTED; |
| 127 | return false; |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Add the revision id as the subtitle on NS_SCHEMA pages. |
| 133 | * |
| 134 | * @param OutputPage $out |
| 135 | * @param Skin $skin |
| 136 | */ |
| 137 | public function onBeforePageDisplay( $out, $skin ): void { |
| 138 | $title = $out->getTitle(); |
| 139 | $revId = $out->getRevisionId(); |
| 140 | |
| 141 | if ( self::isSchemaNamespaceEnabled() |
| 142 | && $title->inNamespace( NS_SCHEMA ) |
| 143 | && $revId !== null |
| 144 | ) { |
| 145 | $out->addSubtitle( $out->msg( 'eventlogging-revision-id' ) |
| 146 | // We use 'rawParams' rather than 'numParams' to make it |
| 147 | // easy to copy/paste the value into code. |
| 148 | ->rawParams( $revId ) |
| 149 | ->escaped() ); |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Prohibit moving (renaming) Schema pages, as doing so violates |
| 155 | * immutability guarantees. |
| 156 | * |
| 157 | * @param Title $currentTitle |
| 158 | * @param Title $newTitle |
| 159 | * @param Status $status |
| 160 | * @return bool |
| 161 | */ |
| 162 | public function onMovePageIsValidMove( |
| 163 | $currentTitle, $newTitle, $status |
| 164 | ) { |
| 165 | if ( !self::isSchemaNamespaceEnabled() ) { |
| 166 | // Namespace isn't even enabled |
| 167 | return true; |
| 168 | } elseif ( $currentTitle->inNamespace( NS_SCHEMA ) ) { |
| 169 | $status->fatal( 'eventlogging-error-move-source' ); |
| 170 | return false; |
| 171 | } elseif ( $newTitle->inNamespace( NS_SCHEMA ) ) { |
| 172 | $status->fatal( 'eventlogging-error-move-destination' ); |
| 173 | return false; |
| 174 | } |
| 175 | return true; |
| 176 | } |
| 177 | } |