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<?php
/**
* API module for serving debug console requests on the edit page
*/
class ApiScribuntoConsole extends ApiBase {
const SC_MAX_SIZE = 500000;
const SC_SESSION_EXPIRY = 3600;
public function execute() {
$params = $this->extractRequestParams();
$title = Title::newFromText( $params['title'] );
if ( !$title ) {
$this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $params['title'] ) ] );
}
if ( $params['session'] ) {
$sessionId = $params['session'];
} else {
$sessionId = mt_rand( 0, 0x7fffffff );
}
$cache = ObjectCache::getInstance( CACHE_ANYTHING );
$sessionKey = $cache->makeKey( 'scribunto-console', $this->getUser()->getId(), $sessionId );
$session = null;
$sessionIsNew = false;
if ( $params['session'] ) {
$session = $cache->get( $sessionKey );
}
if ( !isset( $session['version'] ) ) {
$session = $this->newSession();
$sessionIsNew = true;
}
// Create a variable holding the session which will be stored if there
// are no errors. If there are errors, we don't want to store the current
// question to the state builder array, since that will cause subsequent
// requests to fail.
$newSession = $session;
if ( !empty( $params['clear'] ) ) {
$newSession['size'] -= strlen( implode( '', $newSession['questions'] ) );
$newSession['questions'] = [];
$session['questions'] = [];
}
if ( strlen( $params['question'] ) ) {
$newSession['size'] += strlen( $params['question'] );
$newSession['questions'][] = $params['question'];
}
if ( $params['content'] ) {
$newSession['size'] += strlen( $params['content'] ) - strlen( $newSession['content'] );
$newSession['content'] = $params['content'];
}
if ( $newSession['size'] > self::SC_MAX_SIZE ) {
$this->dieWithError( 'scribunto-console-too-large' );
}
$result = $this->runConsole( [
'title' => $title,
'content' => $newSession['content'],
'prevQuestions' => $session['questions'],
'question' => $params['question'],
] );
if ( $result['type'] === 'error' ) {
// Restore the questions array
$newSession['questions'] = $session['questions'];
}
$cache->set( $sessionKey, $newSession, self::SC_SESSION_EXPIRY );
$result['session'] = $sessionId;
$result['sessionSize'] = $newSession['size'];
$result['sessionMaxSize'] = self::SC_MAX_SIZE;
if ( $sessionIsNew ) {
$result['sessionIsNew'] = '';
}
foreach ( $result as $key => $value ) {
$this->getResult()->addValue( null, $key, $value );
}
}
protected function runConsole( array $params ) {
global $wgParser;
$options = new ParserOptions;
$wgParser->startExternalParse( $params['title'], $options, Parser::OT_HTML, true );
$engine = Scribunto::getParserEngine( $wgParser );
try {
$result = $engine->runConsole( $params );
} catch ( ScribuntoException $e ) {
$trace = $e->getScriptTraceHtml();
$message = $e->getMessage();
$html = Html::element( 'p', [], $message );
if ( $trace !== false ) {
$html .= Html::element( 'p',
[],
$this->msg( 'scribunto-common-backtrace' )->inContentLanguage()->text()
) . $trace;
}
return [
'type' => 'error',
'html' => $html,
'message' => $message,
'messagename' => $e->getMessageName() ];
}
return [
'type' => 'normal',
'print' => strval( $result['print'] ),
'return' => strval( $result['return'] )
];
}
/**
* @return array
*/
protected function newSession() {
return [
'content' => '',
'questions' => [],
'size' => 0,
'version' => 1,
];
}
public function isInternal() {
return true;
}
public function getAllowedParams() {
return [
'title' => [
ApiBase::PARAM_TYPE => 'string',
],
'content' => [
ApiBase::PARAM_TYPE => 'string'
],
'session' => [
ApiBase::PARAM_TYPE => 'integer',
],
'question' => [
ApiBase::PARAM_TYPE => 'string',
ApiBase::PARAM_REQUIRED => true,
],
'clear' => [
ApiBase::PARAM_TYPE => 'boolean',
],
];
}
}
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