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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\Math; |
| 4 | |
| 5 | use Exception; |
| 6 | use MediaWiki\Logger\LoggerFactory; |
| 7 | use MediaWiki\MediaWikiServices; |
| 8 | use RuntimeException; |
| 9 | use stdClass; |
| 10 | |
| 11 | /** |
| 12 | * @author Moritz Schubotz |
| 13 | */ |
| 14 | class MathMathMLCli extends MathMathML { |
| 15 | |
| 16 | /** |
| 17 | * @param MathRenderer[] $renderers |
| 18 | * @return bool |
| 19 | */ |
| 20 | public static function batchEvaluate( array $renderers ) { |
| 21 | $req = []; |
| 22 | foreach ( $renderers as $renderer ) { |
| 23 | '@phan-var MathMathMLCli $renderer'; |
| 24 | // checking if the rendering is in the database is no security issue since only the md5 |
| 25 | // hash of the user input string will be sent to the database |
| 26 | if ( !$renderer->isInDatabase() ) { |
| 27 | $req[] = $renderer->getMathoidCliQuery(); |
| 28 | } |
| 29 | } |
| 30 | if ( count( $req ) === 0 ) { |
| 31 | return true; |
| 32 | } |
| 33 | $exitCode = 1; |
| 34 | $res = self::evaluateWithCli( $req, $exitCode ); |
| 35 | foreach ( $renderers as $renderer ) { |
| 36 | '@phan-var MathMathMLCli $renderer'; |
| 37 | if ( !$renderer->isInDatabase() ) { |
| 38 | $renderer->initializeFromCliResponse( $res ); |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | return true; |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * @param stdClass $res |
| 47 | * @return bool |
| 48 | */ |
| 49 | private function initializeFromCliResponse( $res ) { |
| 50 | global $wgMathoidCli; |
| 51 | if ( !property_exists( $res, $this->getInputHash() ) ) { |
| 52 | $this->lastError = |
| 53 | $this->getError( 'math_mathoid_error', 'cli', |
| 54 | var_export( get_object_vars( $res ), true ) ); |
| 55 | return false; |
| 56 | } |
| 57 | if ( $this->isEmpty() ) { |
| 58 | $this->lastError = $this->getError( 'math_empty_tex' ); |
| 59 | return false; |
| 60 | } |
| 61 | $response = $res->{$this->getInputHash()}; |
| 62 | if ( !$response->success ) { |
| 63 | $this->lastError = $this->renderError( $response ); |
| 64 | return false; |
| 65 | } |
| 66 | $this->texSecure = true; |
| 67 | $this->tex = $response->sanetex; |
| 68 | // The host name is only relevant for the debugging. So using file:// to indicate that the |
| 69 | // cli interface seems to be OK. |
| 70 | $this->processJsonResult( $response, 'file://' . $wgMathoidCli[0] ); |
| 71 | $this->mathStyle = $response->mathoidStyle; |
| 72 | $this->changed = true; |
| 73 | return true; |
| 74 | } |
| 75 | |
| 76 | public function renderError( stdClass $response ): string { |
| 77 | $msg = $response->error; |
| 78 | try { |
| 79 | switch ( $response->detail->status ) { |
| 80 | case "F": |
| 81 | $msg .= "\n Found {$response->detail->details}" . |
| 82 | $this->appendLocationInfo( $response ); |
| 83 | break; |
| 84 | case 'S': |
| 85 | case "C": |
| 86 | $msg .= $this->appendLocationInfo( $response ); |
| 87 | break; |
| 88 | case '-': |
| 89 | // we do not know any cases that triggers this error |
| 90 | } |
| 91 | } catch ( Exception $e ) { |
| 92 | // use default error message |
| 93 | } |
| 94 | |
| 95 | return $this->getError( 'math_mathoid_error', 'cli', $msg ); |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * @return array |
| 100 | */ |
| 101 | public function getMathoidCliQuery() { |
| 102 | return [ |
| 103 | 'query' => [ |
| 104 | 'q' => $this->getTex(), |
| 105 | 'type' => $this->getInputType(), |
| 106 | 'hash' => $this->getInputHash(), |
| 107 | ], |
| 108 | ]; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * @param mixed $req request |
| 113 | * @param int|null &$exitCode |
| 114 | * @return mixed |
| 115 | */ |
| 116 | private static function evaluateWithCli( $req, &$exitCode = null ) { |
| 117 | global $wgMathoidCli; |
| 118 | $json_req = json_encode( $req ); |
| 119 | $cmd = MediaWikiServices::getInstance()->getShellCommandFactory()->create(); |
| 120 | $cmd->params( $wgMathoidCli ); |
| 121 | $cmd->input( $json_req ); |
| 122 | $result = $cmd->execute(); |
| 123 | if ( $result->getExitCode() != 0 ) { |
| 124 | $errorMsg = $result->getStderr(); |
| 125 | LoggerFactory::getInstance( 'Math' )->error( 'Can not process {req} with config |
| 126 | {conf} returns {res}', [ |
| 127 | 'req' => $req, |
| 128 | 'conf' => var_export( $wgMathoidCli, true ), |
| 129 | 'res' => var_export( $result, true ), |
| 130 | ] ); |
| 131 | throw new RuntimeException( "Failed to execute Mathoid cli '$wgMathoidCli[0]', reason: $errorMsg" ); |
| 132 | } |
| 133 | $res = json_decode( $result->getStdout() ); |
| 134 | if ( !$res ) { |
| 135 | throw new RuntimeException( "Mathoid cli response '$res' is no valid JSON file." ); |
| 136 | } |
| 137 | |
| 138 | return $res; |
| 139 | } |
| 140 | |
| 141 | /** @inheritDoc */ |
| 142 | public function render() { |
| 143 | if ( $this->getLastError() ) { |
| 144 | return false; |
| 145 | } |
| 146 | |
| 147 | return true; |
| 148 | } |
| 149 | |
| 150 | protected function doCheck(): bool { |
| 151 | // avoid that restbase is called if check is set to always |
| 152 | return $this->texSecure; |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * @param stdClass $response object from cli |
| 157 | * @return string containing the location information |
| 158 | */ |
| 159 | private function appendLocationInfo( $response ) { |
| 160 | return "in {$response->detail->line}:{$response->detail->column}"; |
| 161 | } |
| 162 | } |