owncloud/core

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lib/private/Files/FileInfo.php

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<?php
/**
 * @author Joas Schilling <coding@schilljs.com>
 * @author Lukas Reschke <lukas@statuscode.ch>
 * @author Morris Jobke <hey@morrisjobke.de>
 * @author Robin Appelman <icewind@owncloud.com>
 * @author Robin McCorkell <robin@mccorkell.me.uk>
 * @author Roeland Jago Douma <rullzer@owncloud.com>
 * @author tbartenstein <tbartenstein@users.noreply.github.com>
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 * @author Vincent Petry <pvince81@owncloud.com>
 *
 * @copyright Copyright (c) 2018, ownCloud GmbH
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */

namespace OC\Files;

use OCP\Files\Cache\ICacheEntry;
use OCP\IUser;

class FileInfo implements \OCP\Files\FileInfo, \ArrayAccess {
    /**
     * @var array $data
     */
    private $data;

    /**
     * @var string $path
     */
    private $path;

    /**
     * @var \OC\Files\Storage\Storage $storage
     */
    private $storage;

    /**
     * @var string $internalPath
     */
    private $internalPath;

    /**
     * @var \OCP\Files\Mount\IMountPoint
     */
    private $mount;

    /**
     * @var IUser
     */
    private $owner;

    /**
     * @var string[]
     */
    private $childEtags = [];

    /**
     * @param string|boolean $path
     * @param Storage\Storage $storage
     * @param string $internalPath
     * @param array|ICacheEntry $data
     * @param \OCP\Files\Mount\IMountPoint $mount
     * @param \OCP\IUser|null $owner
     */
    public function __construct($path, $storage, $internalPath, $data, $mount, $owner= null) {
        $this->path = $path;
        $this->storage = $storage;
        $this->internalPath = $internalPath;
        $this->data = $data;
        $this->mount = $mount;
        $this->owner = $owner;
    }

    public function offsetSet($offset, $value) {
        $this->data[$offset] = $value;
    }

    public function offsetExists($offset) {
        return isset($this->data[$offset]);
    }

    public function offsetUnset($offset) {
        unset($this->data[$offset]);
    }

    public function offsetGet($offset) {
        if ($offset === 'type') {
            return $this->getType();
        } elseif ($offset === 'etag') {
            return $this->getEtag();
        } elseif ($offset === 'permissions') {
            return $this->getPermissions();
        } elseif (isset($this->data[$offset])) {
            return $this->data[$offset];
        } else {
            return null;
        }
    }

    /**
     * @return string
     */
    public function getPath() {
        return $this->path;
    }

    /**
     * @return \OCP\Files\Storage
     */
    public function getStorage() {
        return $this->storage;
    }

    /**
     * @return string
     */
    public function getInternalPath() {
        return $this->internalPath;
    }

    /**
     * @return int
     */
    public function getId() {
        return $this->data['fileid'];
    }

    /**
     * @return string
     */
    public function getMimetype() {
        return $this->data['mimetype'];
    }

    /**
     * @return string
     */
    public function getMimePart() {
        return $this->data['mimepart'];
    }

    /**
     * @return string
     */
    public function getName() {
        return \basename($this->getPath());
    }

    /**
     * @return string
     */
    public function getEtag() {
        if (\count($this->childEtags) > 0) {
            $combinedEtag = $this->data['etag'] . '::' . \implode('::', $this->childEtags);
            return \md5($combinedEtag);
        } else {
            return $this->data['etag'];
        }
    }

    /**
     * @return int|float
     */
    public function getSize() {
        return isset($this->data['size']) ? $this->data['size'] : 0;
    }

    /**
     * @return int
     */
    public function getMTime() {
        return $this->data['mtime'];
    }

    /**
     * @return bool
     */
    public function isEncrypted() {
        return $this->data['encrypted'];
    }

    /**
     * Return the currently version used for the HMAC in the encryption app
     *
     * @return int
     */
    public function getEncryptedVersion() {
        return isset($this->data['encryptedVersion']) ? (int) $this->data['encryptedVersion'] : 1;
    }

    /**
     * @return int
     */
    public function getPermissions() {
        $perms = $this->data['permissions'];
        if (\OCP\Util::isSharingDisabledForUser() || ($this->isShared() && !\OC\Share\Share::isResharingAllowed())) {
            $perms = $perms & ~\OCP\Constants::PERMISSION_SHARE;
        }
        return $perms;
    }

    /**
     * @return \OCP\Files\FileInfo::TYPE_FILE|\OCP\Files\FileInfo::TYPE_FOLDER
     */
    public function getType() {
        if (!isset($this->data['type'])) {
            $this->data['type'] = ($this->getMimetype() === 'httpd/unix-directory') ? self::TYPE_FOLDER : self::TYPE_FILE;
        }
        return $this->data['type'];
    }

    public function getData() {
        return $this->data;
    }

    /**
     * @param int $permissions
     * @return bool
     */
    protected function checkPermissions($permissions) {
        return ($this->getPermissions() & $permissions) === $permissions;
    }

    /**
     * @return bool
     */
    public function isReadable() {
        return $this->checkPermissions(\OCP\Constants::PERMISSION_READ);
    }

    /**
     * @return bool
     */
    public function isUpdateable() {
        return $this->checkPermissions(\OCP\Constants::PERMISSION_UPDATE);
    }

    /**
     * Check whether new files or folders can be created inside this folder
     *
     * @return bool
     */
    public function isCreatable() {
        return $this->checkPermissions(\OCP\Constants::PERMISSION_CREATE);
    }

    /**
     * @return bool
     */
    public function isDeletable() {
        return $this->checkPermissions(\OCP\Constants::PERMISSION_DELETE);
    }

    /**
     * @return bool
     */
    public function isShareable() {
        return $this->checkPermissions(\OCP\Constants::PERMISSION_SHARE);
    }

    /**
     * Check if a file or folder is shared
     *
     * @return bool
     */
    public function isShared() {
        $sid = $this->getStorage()->getId();
        if ($sid !== null) {
            $sid = \explode(':', $sid);
            return ($sid[0] === 'shared');
        }

        return false;
    }

    public function isMounted() {
        $sid = $this->getStorage()->getId();
        if ($sid !== null) {
            $sid = \explode(':', $sid);
            return ($sid[0] !== 'home' and $sid[0] !== 'shared');
        }

        return false;
    }

    /**
     * Get the mountpoint the file belongs to
     *
     * @return \OCP\Files\Mount\IMountPoint
     */
    public function getMountPoint() {
        return $this->mount;
    }

    /**
     * Get the owner of the file
     *
     * @return \OCP\IUser
     */
    public function getOwner() {
        return $this->owner;
    }

    /**
     * Add a cache entry which is the child of this folder
     *
     * Sets the size, etag and size to for cross-storage children
     *
     * @param array $data cache entry for the child
     * @param string $entryPath full path of the child entry
     */
    public function addSubEntry($data, $entryPath) {
        $this->data['size'] += isset($data['size']) ? $data['size'] : 0;
        if (isset($data['mtime'])) {
            $this->data['mtime'] = \max($this->data['mtime'], $data['mtime']);
        }
        if (isset($data['etag'])) {
            // prefix the etag with the relative path of the subentry to propagate etag on mount moves
            $relativeEntryPath = \substr($entryPath, \strlen($this->getPath()));
            // attach the permissions to propagate etag on permission changes of submounts
            $permissions = isset($data['permissions']) ? $data['permissions'] : 0;
            $this->childEtags[] = $relativeEntryPath . '/' . $data['etag'] . $permissions;
        }
    }

    /**
     * @inheritdoc
     */
    public function getChecksum() {
        return $this->data['checksum'];
    }
}