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| 1 | <?php |
| 2 | |
| 3 | namespace FileImporter\Remote\MediaWiki; |
| 4 | |
| 5 | use Exception; |
| 6 | use FileImporter\Data\SourceUrl; |
| 7 | use FileImporter\Services\Http\HttpRequestExecutor; |
| 8 | use MediaWiki\User\CentralId\CentralIdLookup; |
| 9 | use MediaWiki\User\User; |
| 10 | use MediaWiki\User\UserIdentity; |
| 11 | use Psr\Log\LoggerAwareInterface; |
| 12 | use Psr\Log\LoggerInterface; |
| 13 | use Psr\Log\NullLogger; |
| 14 | |
| 15 | /** |
| 16 | * Use CentralAuth to execute API calls on a sibling wiki. |
| 17 | * |
| 18 | * @license GPL-2.0-or-later |
| 19 | */ |
| 20 | class RemoteApiRequestExecutor implements LoggerAwareInterface { |
| 21 | |
| 22 | private HttpApiLookup $httpApiLookup; |
| 23 | private HttpRequestExecutor $httpRequestExecutor; |
| 24 | private CentralAuthTokenProvider $centralAuthTokenProvider; |
| 25 | private CentralIdLookup $centralIdLookup; |
| 26 | private LoggerInterface $logger; |
| 27 | |
| 28 | public function __construct( |
| 29 | HttpApiLookup $httpApiLookup, |
| 30 | HttpRequestExecutor $httpRequestExecutor, |
| 31 | CentralAuthTokenProvider $centralAuthTokenProvider, |
| 32 | CentralIdLookup $centralIdLookup |
| 33 | ) { |
| 34 | $this->httpApiLookup = $httpApiLookup; |
| 35 | $this->httpRequestExecutor = $httpRequestExecutor; |
| 36 | $this->centralAuthTokenProvider = $centralAuthTokenProvider; |
| 37 | $this->centralIdLookup = $centralIdLookup; |
| 38 | $this->logger = new NullLogger(); |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * @codeCoverageIgnore |
| 43 | */ |
| 44 | public function setLogger( LoggerInterface $logger ) { |
| 45 | $this->logger = $logger; |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * @param SourceUrl $sourceUrl |
| 50 | * @param User $user |
| 51 | * @param array $params API request params |
| 52 | * @param bool $usePost |
| 53 | * @return array|null Null in case of an error. Calling code can't understand why, but the error |
| 54 | * is logged. |
| 55 | */ |
| 56 | public function execute( |
| 57 | SourceUrl $sourceUrl, |
| 58 | User $user, |
| 59 | array $params, |
| 60 | bool $usePost = false |
| 61 | ): ?array { |
| 62 | // TODO handle error |
| 63 | if ( !$this->canUseCentralAuth( $user ) ) { |
| 64 | $this->logger->error( __METHOD__ . ' user can\'t use CentralAuth.' ); |
| 65 | return null; |
| 66 | } |
| 67 | |
| 68 | $result = $this->doRequest( $sourceUrl, $user, $params, $usePost ); |
| 69 | |
| 70 | // It's an array of "errors" with errorformat=plaintext, but a single "error" without. |
| 71 | // Each error contains "code" and "info" with formatversion=2, but "code" and "*" without. |
| 72 | if ( isset( $result['errors'] ) || isset( $result['error'] ) ) { |
| 73 | $this->logger->error( 'Remote API responded with an error', [ |
| 74 | 'sourceUrl' => $sourceUrl->getUrl(), |
| 75 | 'apiParameters' => $params, |
| 76 | 'response' => $result, |
| 77 | ] ); |
| 78 | } |
| 79 | |
| 80 | return $result; |
| 81 | } |
| 82 | |
| 83 | private function getCentralId( UserIdentity $user ): int { |
| 84 | return $this->centralIdLookup->centralIdFromLocalUser( |
| 85 | $user, |
| 86 | CentralIdLookup::AUDIENCE_RAW |
| 87 | ); |
| 88 | } |
| 89 | |
| 90 | private function canUseCentralAuth( User $user ): bool { |
| 91 | return $user->isSafeToLoad() && |
| 92 | $this->getCentralId( $user ) !== 0; |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * @throws Exception |
| 97 | */ |
| 98 | private function getAuthorizedApiUrl( |
| 99 | SourceUrl $sourceUrl, |
| 100 | User $user |
| 101 | ): string { |
| 102 | $url = $this->httpApiLookup->getApiUrl( $sourceUrl ); |
| 103 | return wfAppendQuery( $url, [ |
| 104 | 'centralauthtoken' => $this->centralAuthTokenProvider->getToken( $user ), |
| 105 | ] ); |
| 106 | } |
| 107 | |
| 108 | public function getCsrfToken( SourceUrl $sourceUrl, User $user ): ?string { |
| 109 | try { |
| 110 | $tokenRequestUrl = $this->getAuthorizedApiUrl( $sourceUrl, $user ); |
| 111 | } catch ( Exception $ex ) { |
| 112 | $this->logger->error( 'Failed to get centralauthtoken: ' . |
| 113 | $ex->getMessage() ); |
| 114 | return null; |
| 115 | } |
| 116 | $tokenRequest = $this->httpRequestExecutor->execute( $tokenRequestUrl, [ |
| 117 | 'action' => 'query', |
| 118 | 'meta' => 'tokens', |
| 119 | 'type' => 'csrf', |
| 120 | 'format' => 'json', |
| 121 | 'formatversion' => 2, |
| 122 | ] ); |
| 123 | |
| 124 | $tokenData = json_decode( $tokenRequest->getContent(), true ); |
| 125 | $token = $tokenData['query']['tokens']['csrftoken'] ?? null; |
| 126 | |
| 127 | if ( !$token ) { |
| 128 | $this->logger->error( __METHOD__ . ' failed to get CSRF token.' ); |
| 129 | } |
| 130 | |
| 131 | return $token; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * @param SourceUrl $sourceUrl |
| 136 | * @param User $user |
| 137 | * @param array $params API request params |
| 138 | * @param bool $usePost |
| 139 | * @return array|null Null in case of an error. Calling code can't understand why, but the error |
| 140 | * is logged. |
| 141 | */ |
| 142 | private function doRequest( |
| 143 | SourceUrl $sourceUrl, |
| 144 | User $user, |
| 145 | array $params, |
| 146 | bool $usePost |
| 147 | ): ?array { |
| 148 | /** @var array|null $result */ |
| 149 | $result = null; |
| 150 | /** @var \MWHttpRequest|null $request */ |
| 151 | $request = null; |
| 152 | |
| 153 | try { |
| 154 | $requestUrl = $this->getAuthorizedApiUrl( $sourceUrl, $user ); |
| 155 | $this->logger->debug( 'Got cross-wiki, authorized API URL: ' . $requestUrl ); |
| 156 | if ( $usePost ) { |
| 157 | $request = $this->httpRequestExecutor->executePost( $requestUrl, $params ); |
| 158 | } else { |
| 159 | $request = $this->httpRequestExecutor->execute( $requestUrl, $params ); |
| 160 | } |
| 161 | $result = json_decode( $request->getContent(), true ); |
| 162 | if ( $result === null ) { |
| 163 | $this->logger->error( __METHOD__ . ' failed to decode response from ' . |
| 164 | $request->getFinalUrl() ); |
| 165 | } |
| 166 | } catch ( Exception $ex ) { |
| 167 | if ( !$request ) { |
| 168 | $msg = __METHOD__ . ' failed to do remote request to ' . $sourceUrl->getHost() . |
| 169 | ' with params ' . json_encode( $params ) . ': ' . $ex->getMessage(); |
| 170 | } else { |
| 171 | $msg = __METHOD__ . ' failed to do remote request to ' . $request->getFinalUrl() . |
| 172 | ' with params ' . json_encode( $params ) . |
| 173 | ' and response headers ' . json_encode( $request->getResponseHeaders() ) . |
| 174 | ': ' . $ex->getMessage(); |
| 175 | } |
| 176 | $this->logger->error( $msg ); |
| 177 | } |
| 178 | |
| 179 | return $result; |
| 180 | } |
| 181 | |
| 182 | } |