Subversion-Projekte lars-tiefland.laravel_shop

<?php

/*

 * This file is part of Psy Shell.

 *

 * (c) 2012-2022 Justin Hileman

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace Psy\CodeCleaner;

use PhpParser\Node;

use PhpParser\Node\Arg;

use PhpParser\Node\Expr\Include_;

use PhpParser\Node\Expr\StaticCall;

use PhpParser\Node\Name\FullyQualified as FullyQualifiedName;

use PhpParser\Node\Scalar\LNumber;

use Psy\Exception\ErrorException;

use Psy\Exception\FatalErrorException;

/**

 * Add runtime validation for `require` and `require_once` calls.

 */

class RequirePass extends CodeCleanerPass

{

    private static $requireTypes = [Include_::TYPE_REQUIRE, Include_::TYPE_REQUIRE_ONCE];

    /**

     * {@inheritdoc}

     *

     * @return int|Node|null Replacement node (or special return value)

     */

    public function enterNode(Node $origNode)

    {

        if (!$this->isRequireNode($origNode)) {

            return;

        }

        $node = clone $origNode;

        /*

         * rewrite

         *

         *   $foo = require $bar

         *

         * to

         *

         *   $foo = require \Psy\CodeCleaner\RequirePass::resolve($bar)

         */

        $node->expr = new StaticCall(

            new FullyQualifiedName(self::class),

            'resolve',

            [new Arg($origNode->expr), new Arg(new LNumber($origNode->getLine()))],

            $origNode->getAttributes()

        );

        return $node;

    }

    /**

     * Runtime validation that $file can be resolved as an include path.

     *

     * If $file can be resolved, return $file. Otherwise throw a fatal error exception.

     *

     * If $file collides with a path in the currently running PsySH phar, it will be resolved

     * relative to the include path, to prevent PHP from grabbing the phar version of the file.

     *

     * @throws FatalErrorException when unable to resolve include path for $file

     * @throws ErrorException      if $file is empty and E_WARNING is included in error_reporting level

     *

     * @param string $file

     * @param int    $lineNumber Line number of the original require expression

     *

     * @return string Exactly the same as $file, unless $file collides with a path in the currently running phar

     */

    public static function resolve($file, $lineNumber = null): string

    {

        $file = (string) $file;

        if ($file === '') {

            // @todo Shell::handleError would be better here, because we could

            // fake the file and line number, but we can't call it statically.

            // So we're duplicating some of the logics here.

            if (\E_WARNING & \error_reporting()) {

                ErrorException::throwException(\E_WARNING, 'Filename cannot be empty', null, $lineNumber);

            }

            // @todo trigger an error as fallback? this is pretty ugly…

            // trigger_error('Filename cannot be empty', E_USER_WARNING);

        }

        $resolvedPath = \stream_resolve_include_path($file);

        if ($file === '' || !$resolvedPath) {

            $msg = \sprintf("Failed opening required '%s'", $file);

            throw new FatalErrorException($msg, 0, \E_ERROR, null, $lineNumber);

        }

        // Special case: if the path is not already relative or absolute, and it would resolve to

        // something inside the currently running phar (e.g. `vendor/autoload.php`), we'll resolve

        // it relative to the include path so PHP won't grab the phar version.

        //

        // Note that this only works if the phar has `psysh` in the path. We might want to lift this

        // restriction and special case paths that would collide with any running phar?

        if ($resolvedPath !== $file && $file[0] !== '.') {

            $runningPhar = \Phar::running();

            if (\strpos($runningPhar, 'psysh') !== false && \is_file($runningPhar.\DIRECTORY_SEPARATOR.$file)) {

                foreach (self::getIncludePath() as $prefix) {

                    $resolvedPath = $prefix.\DIRECTORY_SEPARATOR.$file;

                    if (\is_file($resolvedPath)) {

                        return $resolvedPath;

                    }

                }

            }

        }

        return $file;

    }

    private function isRequireNode(Node $node): bool

    {

        return $node instanceof Include_ && \in_array($node->type, self::$requireTypes);

    }

    private static function getIncludePath(): array

    {

        if (\PATH_SEPARATOR === ':') {

            return \preg_split('#:(?!//)#', \get_include_path());

        }

        return \explode(\PATH_SEPARATOR, \get_include_path());

    }

}