110 lines
3 KiB
PHP
110 lines
3 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2017, Robin Appelman <robin@icewind.nl>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Federation;
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use OCP\Federation\ICloudId;
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use OCP\Federation\ICloudIdManager;
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class CloudIdManager implements ICloudIdManager {
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/**
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* @param string $cloudId
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* @return ICloudId
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* @throws \InvalidArgumentException
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*/
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public function resolveCloudId($cloudId) {
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// TODO magic here to get the url and user instead of just splitting on @
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if (!$this->isValidCloudId($cloudId)) {
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throw new \InvalidArgumentException('Invalid cloud id');
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}
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// Find the first character that is not allowed in user names
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$id = $this->fixRemoteURL($cloudId);
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$posSlash = strpos($id, '/');
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$posColon = strpos($id, ':');
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if ($posSlash === false && $posColon === false) {
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$invalidPos = strlen($id);
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} else if ($posSlash === false) {
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$invalidPos = $posColon;
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} else if ($posColon === false) {
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$invalidPos = $posSlash;
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} else {
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$invalidPos = min($posSlash, $posColon);
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}
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// Find the last @ before $invalidPos
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$pos = $lastAtPos = 0;
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while ($lastAtPos !== false && $lastAtPos <= $invalidPos) {
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$pos = $lastAtPos;
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$lastAtPos = strpos($id, '@', $pos + 1);
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}
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if ($pos !== false) {
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$user = substr($id, 0, $pos);
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$remote = substr($id, $pos + 1);
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if (!empty($user) && !empty($remote)) {
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return new CloudId($id, $user, $remote);
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}
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}
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throw new \InvalidArgumentException('Invalid cloud id');
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}
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/**
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* @param string $user
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* @param string $remote
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* @return CloudId
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*/
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public function getCloudId($user, $remote) {
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// TODO check what the correct url is for remote (asking the remote)
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return new CloudId($user. '@' . $remote, $user, $remote);
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}
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/**
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* Strips away a potential file names and trailing slashes:
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* - http://localhost
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* - http://localhost/
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* - http://localhost/index.php
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* - http://localhost/index.php/s/{shareToken}
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*
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* all return: http://localhost
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*
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* @param string $remote
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* @return string
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*/
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protected function fixRemoteURL($remote) {
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$remote = str_replace('\\', '/', $remote);
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if ($fileNamePosition = strpos($remote, '/index.php')) {
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$remote = substr($remote, 0, $fileNamePosition);
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}
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$remote = rtrim($remote, '/');
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return $remote;
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}
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/**
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* @param string $cloudId
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* @return bool
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*/
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public function isValidCloudId($cloudId) {
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return strpos($cloudId, '@') !== false;
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}
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}
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