LinkNode.php

Go to the documentation of this file.

<?php
namespace TYPO3\CMS\Install\FolderStructure;

use TYPO3\CMS\Install\Status;

class LinkNode extends AbstractNode implements NodeInterface {

    protected $target = '';

    public function __construct(array $structure, NodeInterface $parent = NULL) {
        if (is_null($parent)) {
            throw new \TYPO3\CMS\Install\FolderStructure\Exception\InvalidArgumentException(
                'Link node must have parent',
                1380485700
            );
        }
        $this->parent = $parent;

        // Ensure name is a single segment, but not a path like foo/bar or an absolute path /foo
        if (strstr($structure['name'], '/') !== FALSE) {
            throw new \TYPO3\CMS\Install\FolderStructure\Exception\InvalidArgumentException(
                'File name must not contain forward slash',
                1380546061
            );
        }
        $this->name = $structure['name'];

        if (isset($structure['target']) && strlen($structure['target']) > 0) {
            $this->target = $structure['target'];
        }
    }

    public function getStatus() {
        if ($this->isWindowsOs()) {
            $status = new Status\InfoStatus();
            $status->setTitle($this->getRelativePathBelowSiteRoot() . ' should be a link, but this support is incomplete for Windows.');
            $status->setMessage(
                'This node is not handled for Windows OS and should be checked manually.'
            );
            return array($status);
        }

        if (!$this->exists()) {
            $status = new Status\ErrorStatus();
            $status->setTitle($this->getRelativePathBelowSiteRoot() . ' should be a link, but it does not exist');
            $status->setMessage('Links cannot be fixed by this system');
            return array($status);
        }

        if (!$this->isLink()) {
            $status = new Status\WarningStatus();
            $status->setTitle('Path ' . $this->getRelativePathBelowSiteRoot() . ' is not a link');
            $type = @filetype($this->getAbsolutePath());
            if ($type) {
                $status->setMessage(
                    'The target ' . $this->getRelativePathBelowSiteRoot() . ' should be a link,' .
                    ' but is of type ' . $type . '. This cannot be fixed automatically. Please investigate.'
                );
            } else {
                $status->setMessage(
                    'The target ' . $this->getRelativePathBelowSiteRoot() . ' should be a file,' .
                    ' but is of unknown type, probably because an upper level directory does not exist. Please investigate.'
                );
            }
            return array($status);
        }

        if (!$this->isTargetCorrect()) {
            $status = new Status\ErrorStatus();
            $status->setTitle($this->getRelativePathBelowSiteRoot() . ' is a link, but link target is not as specified');
            $status->setMessage(
                'Link target should be ' . $this->getTarget() . ' but is ' . $this->getCurrentTarget()
            );
            return array($status);
        }

        $status = new Status\OkStatus();
        $message = 'Is a link';
        if ($this->getTarget() !== '') {
            $message .= ' and correctly points to target ' . $this->getTarget();
        }
        $status->setTitle($this->getRelativePathBelowSiteRoot());
        $status->setMessage($message);
        return array($status);
    }

    public function fix() {
        return array();
    }

    protected function getTarget() {
        return $this->target;
    }

    protected function isLink() {
        if (!$this->exists()) {
            throw new \TYPO3\CMS\Install\FolderStructure\Exception\InvalidArgumentException(
                'Link does not exist',
                1380556246
            );
        }
        return @is_link($this->getAbsolutePath());
    }

    protected function isTargetCorrect() {
        if (!$this->exists()) {
            throw new \TYPO3\CMS\Install\FolderStructure\Exception\InvalidArgumentException(
                'Link does not exist',
                1380556245
            );
        }
        if (!$this->isLink()) {
            throw new \TYPO3\CMS\Install\FolderStructure\Exception\InvalidArgumentException(
                'Node is not a link',
                1380556247
            );
        }

        $result = FALSE;
        $expectedTarget = $this->getTarget();
        if (empty($expectedTarget)) {
            $result = TRUE;
        } else {
            $actualTarget = $this->getCurrentTarget();
            if ($expectedTarget === rtrim($actualTarget, '/')) {
                $result = TRUE;
            }
        }
        return $result;
    }

    protected function getCurrentTarget() {
        return readlink($this->getAbsolutePath());
    }

}