diff options
Diffstat (limited to 'apps/federatedfilesharing/lib/AddressHandler.php')
| -rw-r--r-- | apps/federatedfilesharing/lib/AddressHandler.php | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/apps/federatedfilesharing/lib/AddressHandler.php b/apps/federatedfilesharing/lib/AddressHandler.php new file mode 100644 index 00000000000..92768f11b95 --- /dev/null +++ b/apps/federatedfilesharing/lib/AddressHandler.php @@ -0,0 +1,184 @@ +<?php +/** + * @author Björn Schießle <schiessle@owncloud.com> + * + * @copyright Copyright (c) 2016, ownCloud, Inc. + * @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 OCA\FederatedFileSharing; +use OC\HintException; +use OCP\IL10N; +use OCP\IURLGenerator; + +/** + * Class AddressHandler - parse, modify and construct federated sharing addresses + * + * @package OCA\FederatedFileSharing + */ +class AddressHandler { + + /** @var IL10N */ + private $l; + + /** @var IURLGenerator */ + private $urlGenerator; + + /** + * AddressHandler constructor. + * + * @param IURLGenerator $urlGenerator + * @param IL10N $il10n + */ + public function __construct( + IURLGenerator $urlGenerator, + IL10N $il10n + ) { + $this->l = $il10n; + $this->urlGenerator = $urlGenerator; + } + + /** + * split user and remote from federated cloud id + * + * @param string $address federated share address + * @return array [user, remoteURL] + * @throws HintException + */ + public function splitUserRemote($address) { + if (strpos($address, '@') === false) { + $hint = $this->l->t('Invalid Federated Cloud ID'); + throw new HintException('Invalid Federated Cloud ID', $hint); + } + + // Find the first character that is not allowed in user names + $id = str_replace('\\', '/', $address); + $posSlash = strpos($id, '/'); + $posColon = strpos($id, ':'); + + if ($posSlash === false && $posColon === false) { + $invalidPos = strlen($id); + } else if ($posSlash === false) { + $invalidPos = $posColon; + } else if ($posColon === false) { + $invalidPos = $posSlash; + } else { + $invalidPos = min($posSlash, $posColon); + } + + // Find the last @ before $invalidPos + $pos = $lastAtPos = 0; + while ($lastAtPos !== false && $lastAtPos <= $invalidPos) { + $pos = $lastAtPos; + $lastAtPos = strpos($id, '@', $pos + 1); + } + + if ($pos !== false) { + $user = substr($id, 0, $pos); + $remote = substr($id, $pos + 1); + $remote = $this->fixRemoteURL($remote); + if (!empty($user) && !empty($remote)) { + return array($user, $remote); + } + } + + $hint = $this->l->t('Invalid Federated Cloud ID'); + throw new HintException('Invalid Federated Cloud ID', $hint); + } + + /** + * generate remote URL part of federated ID + * + * @return string url of the current server + */ + public function generateRemoteURL() { + $url = $this->urlGenerator->getAbsoluteURL('/'); + return $url; + } + + /** + * check if two federated cloud IDs refer to the same user + * + * @param string $user1 + * @param string $server1 + * @param string $user2 + * @param string $server2 + * @return bool true if both users and servers are the same + */ + public function compareAddresses($user1, $server1, $user2, $server2) { + $normalizedServer1 = strtolower($this->removeProtocolFromUrl($server1)); + $normalizedServer2 = strtolower($this->removeProtocolFromUrl($server2)); + + if (rtrim($normalizedServer1, '/') === rtrim($normalizedServer2, '/')) { + // FIXME this should be a method in the user management instead + \OCP\Util::emitHook( + '\OCA\Files_Sharing\API\Server2Server', + 'preLoginNameUsedAsUserName', + array('uid' => &$user1) + ); + \OCP\Util::emitHook( + '\OCA\Files_Sharing\API\Server2Server', + 'preLoginNameUsedAsUserName', + array('uid' => &$user2) + ); + + if ($user1 === $user2) { + return true; + } + } + + return false; + } + + /** + * remove protocol from URL + * + * @param string $url + * @return string + */ + public function removeProtocolFromUrl($url) { + if (strpos($url, 'https://') === 0) { + return substr($url, strlen('https://')); + } else if (strpos($url, 'http://') === 0) { + return substr($url, strlen('http://')); + } + + return $url; + } + + /** + * Strips away a potential file names and trailing slashes: + * - http://localhost + * - http://localhost/ + * - http://localhost/index.php + * - http://localhost/index.php/s/{shareToken} + * + * all return: http://localhost + * + * @param string $remote + * @return string + */ + protected function fixRemoteURL($remote) { + $remote = str_replace('\\', '/', $remote); + if ($fileNamePosition = strpos($remote, '/index.php')) { + $remote = substr($remote, 0, $fileNamePosition); + } + $remote = rtrim($remote, '/'); + + return $remote; + } + +} |