eval.php

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<?php
use MediaWiki\Logger\ConsoleSpi;
use MediaWiki\Logger\LoggerFactory;
use MediaWiki\MediaWikiServices;
 
require_once __DIR__ . '/Maintenance.php';
 
// phpcs:disable MediaWiki.Files.ClassMatchesFilename.NotMatch
class MWEval extends Maintenance {
    public function __construct() {
        parent::__construct();
        $this->addDescription(
            'Maintenance script providing an interactive console for evaluating php' .
            'commands in the context of an initialized MediaWiki instance.'
        );
 
        $this->addOption(
            'd',
            'Enable (some) debug output',
            false,
            true
        );
 
        $this->addOption(
            'ignore-errors',
            'Ignore (some) errors'
        );
    }
 
    public function canExecuteWithoutLocalSettings(): bool {
        return true;
    }
 
    public function execute() {
        if ( $this->hasOption( 'd' ) ) {
            $d = $this->getOption( 'd' );
            if ( $d > 0 ) {
                LoggerFactory::registerProvider( new ConsoleSpi );
                // Some services hold Logger instances in object properties
                MediaWikiServices::resetGlobalInstance();
            }
            if ( $d > 1 ) {
                wfGetDB( DB_PRIMARY )->setFlag( DBO_DEBUG );
                wfGetDB( DB_REPLICA )->setFlag( DBO_DEBUG );
            }
        }
 
        // pull all globals into local scope
        foreach ( $GLOBALS as $name => $unused ) {
            // phpcs:disable MediaWiki.NamingConventions.ValidGlobalName.allowedPrefix
            // phpcs:disable MediaWiki.VariableAnalysis.UnusedGlobalVariables.UnusedGlobal$name
            global $$name;
        }
 
        $__ignoreErrors = $this->hasOption( 'ignore-errors' );
 
        $__useReadline = function_exists( 'readline_add_history' )
            && Maintenance::posix_isatty( 0 /*STDIN*/ );
 
        if ( $__useReadline ) {
            $__historyFile = isset( $_ENV['HOME'] ) ?
                "{$_ENV['HOME']}/.mweval_history" : ( MW_INSTALL_PATH . "/maintenance/.mweval_history" );
            readline_read_history( $__historyFile );
        } else {
            $__historyFile = null;
        }
 
        Hooks::runner()->onMaintenanceShellStart();
 
        $__e = null; // PHP exception
        while ( ( $__line = Maintenance::readconsole() ) !== false ) {
            if ( !$__ignoreErrors && $__e && !preg_match( '/^(exit|die);?$/', $__line ) ) {
                // Internal state may be corrupted or fatals may occur later due
                // to some object not being set. Don't drop out of eval in case
                // lines were being pasted in (which would then get dumped to the shell).
                // Instead, just absorb the remaining commands. Let "exit" through per DWIM.
                echo "Exception was thrown before; please restart eval.php\n";
                continue;
            }
            if ( $__useReadline ) {
                readline_add_history( $__line );
                // @phan-suppress-next-line PhanTypeMismatchArgumentNullableInternal
                readline_write_history( $__historyFile );
            }
            try {
                // @phan-suppress-next-line SecurityCheck-RCE
                $__val = eval( $__line . ";" );
            } catch ( Exception $__e ) {
                fwrite( STDERR, "Caught exception " . get_class( $__e ) .
                    ": {$__e->getMessage()}\n" . $__e->getTraceAsString() . "\n" );
                continue;
            } catch ( Throwable $__e ) {
                if ( $__ignoreErrors ) {
                    fwrite( STDERR, "Caught " . get_class( $__e ) .
                        ": {$__e->getMessage()}\n" . $__e->getTraceAsString() . "\n" );
                    continue;
                } else {
                    throw $__e;
                }
            }
            if ( $__val === null ) {
                echo "\n";
            } elseif ( is_string( $__val ) || is_numeric( $__val ) ) {
                echo "$__val\n";
            } else {
                var_dump( $__val );
            }
        }
 
        echo "\n";
    }
}
 
$maintClass = MWEval::class;
require_once RUN_MAINTENANCE_IF_MAIN;