719 lines
23 KiB
PHP
Executable file
719 lines
23 KiB
PHP
Executable file
<?php
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/**
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* ownCloud
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*
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* @author Michael Gapczynski
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* @copyright 2012 Michael Gapczynski mtgap@owncloud.com
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* @copyright 2014 Vincent Petry <pvince81@owncloud.com>
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* @copyright 2014 Robin McCorkell <rmccorkell@karoshi.org.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library 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
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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set_include_path(
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get_include_path() . PATH_SEPARATOR .
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\OC_App::getAppPath('files_external') . '/3rdparty/phpseclib/phpseclib'
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);
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/**
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* Class to configure mount.json globally and for users
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*/
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class OC_Mount_Config {
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// TODO: make this class non-static and give it a proper namespace
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const MOUNT_TYPE_GLOBAL = 'global';
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const MOUNT_TYPE_GROUP = 'group';
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const MOUNT_TYPE_USER = 'user';
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// whether to skip backend test (for unit tests, as this static class is not mockable)
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public static $skipTest = false;
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private static $backends = array();
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/**
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* @param string $class
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* @param array $definition
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* @return bool
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*/
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public static function registerBackend($class, $definition) {
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if (!isset($definition['backend'])) {
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return false;
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}
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OC_Mount_Config::$backends[$class] = $definition;
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return true;
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}
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/**
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* Setup backends
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*
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* @return array of previously registered backends
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*/
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public static function setUp($backends = array()) {
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$backup = self::$backends;
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self::$backends = $backends;
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return $backup;
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}
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/**
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* Get details on each of the external storage backends, used for the mount config UI
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* If a custom UI is needed, add the key 'custom' and a javascript file with that name will be loaded
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* If the configuration parameter should be secret, add a '*' to the beginning of the value
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* If the configuration parameter is a boolean, add a '!' to the beginning of the value
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* If the configuration parameter is optional, add a '&' to the beginning of the value
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* If the configuration parameter is hidden, add a '#' to the beginning of the value
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* @return array
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*/
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public static function getBackends() {
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$sortFunc = function($a, $b) {
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return strcasecmp($a['backend'], $b['backend']);
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};
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$backEnds = array();
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foreach (OC_Mount_Config::$backends as $class => $backend) {
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if (isset($backend['has_dependencies']) and $backend['has_dependencies'] === true) {
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if (!method_exists($class, 'checkDependencies')) {
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\OCP\Util::writeLog('files_external',
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"Backend class $class has dependencies but doesn't provide method checkDependencies()",
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\OCP\Util::DEBUG);
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continue;
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} elseif ($class::checkDependencies() !== true) {
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continue;
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}
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}
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$backEnds[$class] = $backend;
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}
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uasort($backEnds, $sortFunc);
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return $backEnds;
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}
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/**
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* Hook that mounts the given user's visible mount points
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* @param array $data
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*/
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public static function initMountPointsHook($data) {
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$mountPoints = self::getAbsoluteMountPoints($data['user']);
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foreach ($mountPoints as $mountPoint => $options) {
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\OC\Files\Filesystem::mount($options['class'], $options['options'], $mountPoint);
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}
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}
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/**
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* Returns the mount points for the given user.
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* The mount point is relative to the data directory.
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*
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* @param string $user user
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* @return array of mount point string as key, mountpoint config as value
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*/
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public static function getAbsoluteMountPoints($user) {
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$mountPoints = array();
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$datadir = \OC_Config::getValue("datadirectory", \OC::$SERVERROOT . "/data");
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$mount_file = \OC_Config::getValue("mount_file", $datadir . "/mount.json");
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//move config file to it's new position
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if (is_file(\OC::$SERVERROOT . '/config/mount.json')) {
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rename(\OC::$SERVERROOT . '/config/mount.json', $mount_file);
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}
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// Load system mount points
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$mountConfig = self::readData();
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if (isset($mountConfig[self::MOUNT_TYPE_GLOBAL])) {
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foreach ($mountConfig[self::MOUNT_TYPE_GLOBAL] as $mountPoint => $options) {
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$options['options'] = self::decryptPasswords($options['options']);
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$mountPoints[$mountPoint] = $options;
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}
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}
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if (isset($mountConfig[self::MOUNT_TYPE_GROUP])) {
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foreach ($mountConfig[self::MOUNT_TYPE_GROUP] as $group => $mounts) {
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if (\OC_Group::inGroup($user, $group)) {
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foreach ($mounts as $mountPoint => $options) {
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$mountPoint = self::setUserVars($user, $mountPoint);
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foreach ($options as &$option) {
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$option = self::setUserVars($user, $option);
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}
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$options['options'] = self::decryptPasswords($options['options']);
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$mountPoints[$mountPoint] = $options;
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}
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}
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}
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}
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if (isset($mountConfig[self::MOUNT_TYPE_USER])) {
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foreach ($mountConfig[self::MOUNT_TYPE_USER] as $mountUser => $mounts) {
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if ($mountUser === 'all' or strtolower($mountUser) === strtolower($user)) {
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foreach ($mounts as $mountPoint => $options) {
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$mountPoint = self::setUserVars($user, $mountPoint);
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foreach ($options as &$option) {
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$option = self::setUserVars($user, $option);
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}
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$options['options'] = self::decryptPasswords($options['options']);
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$mountPoints[$mountPoint] = $options;
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}
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}
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}
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}
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// Load personal mount points
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$mountConfig = self::readData($user);
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if (isset($mountConfig[self::MOUNT_TYPE_USER][$user])) {
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foreach ($mountConfig[self::MOUNT_TYPE_USER][$user] as $mountPoint => $options) {
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$options['options'] = self::decryptPasswords($options['options']);
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$mountPoints[$mountPoint] = $options;
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}
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}
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return $mountPoints;
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}
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/**
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* fill in the correct values for $user
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*
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* @param string $user
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* @param string $input
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* @return string
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*/
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private static function setUserVars($user, $input) {
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return str_replace('$user', $user, $input);
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}
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/**
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* Get details on each of the external storage backends, used for the mount config UI
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* Some backends are not available as a personal backend, f.e. Local and such that have
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* been disabled by the admin.
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*
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* If a custom UI is needed, add the key 'custom' and a javascript file with that name will be loaded
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* If the configuration parameter should be secret, add a '*' to the beginning of the value
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* If the configuration parameter is a boolean, add a '!' to the beginning of the value
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* If the configuration parameter is optional, add a '&' to the beginning of the value
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* If the configuration parameter is hidden, add a '#' to the beginning of the value
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* @return array
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*/
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public static function getPersonalBackends() {
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// Check whether the user has permissions to add personal storage backends
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// return an empty array if this is not the case
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if(OCP\Config::getAppValue('files_external', 'allow_user_mounting', 'yes') !== 'yes') {
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return array();
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}
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$backEnds = self::getBackends();
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// Remove local storage and other disabled storages
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unset($backEnds['\OC\Files\Storage\Local']);
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$allowedBackEnds = explode(',', OCP\Config::getAppValue('files_external', 'user_mounting_backends', ''));
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foreach ($backEnds as $backend => $null) {
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if (!in_array($backend, $allowedBackEnds)) {
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unset($backEnds[$backend]);
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}
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}
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return $backEnds;
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}
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/**
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* Get the system mount points
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* The returned array is not in the same format as getUserMountPoints()
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* @return array
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*/
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public static function getSystemMountPoints() {
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$mountPoints = self::readData();
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$backends = self::getBackends();
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$system = array();
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if (isset($mountPoints[self::MOUNT_TYPE_GROUP])) {
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foreach ($mountPoints[self::MOUNT_TYPE_GROUP] as $group => $mounts) {
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foreach ($mounts as $mountPoint => $mount) {
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// Update old classes to new namespace
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if (strpos($mount['class'], 'OC_Filestorage_') !== false) {
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$mount['class'] = '\OC\Files\Storage\\'.substr($mount['class'], 15);
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}
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$mount['options'] = self::decryptPasswords($mount['options']);
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// Remove '/$user/files/' from mount point
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$mountPoint = substr($mountPoint, 13);
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$config = array(
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'class' => $mount['class'],
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'mountpoint' => $mountPoint,
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'backend' => $backends[$mount['class']]['backend'],
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'options' => $mount['options'],
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'applicable' => array('groups' => array($group), 'users' => array()),
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'status' => self::getBackendStatus($mount['class'], $mount['options'], false)
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);
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$hash = self::makeConfigHash($config);
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// If an existing config exists (with same class, mountpoint and options)
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if (isset($system[$hash])) {
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// add the groups into that config
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$system[$hash]['applicable']['groups']
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= array_merge($system[$hash]['applicable']['groups'], array($group));
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} else {
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$system[$hash] = $config;
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}
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}
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}
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}
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if (isset($mountPoints[self::MOUNT_TYPE_USER])) {
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foreach ($mountPoints[self::MOUNT_TYPE_USER] as $user => $mounts) {
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foreach ($mounts as $mountPoint => $mount) {
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// Update old classes to new namespace
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if (strpos($mount['class'], 'OC_Filestorage_') !== false) {
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$mount['class'] = '\OC\Files\Storage\\'.substr($mount['class'], 15);
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}
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$mount['options'] = self::decryptPasswords($mount['options']);
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// Remove '/$user/files/' from mount point
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$mountPoint = substr($mountPoint, 13);
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$config = array(
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'class' => $mount['class'],
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'mountpoint' => $mountPoint,
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'backend' => $backends[$mount['class']]['backend'],
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'options' => $mount['options'],
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'applicable' => array('groups' => array(), 'users' => array($user)),
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'status' => self::getBackendStatus($mount['class'], $mount['options'], false)
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);
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$hash = self::makeConfigHash($config);
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// If an existing config exists (with same class, mountpoint and options)
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if (isset($system[$hash])) {
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// add the users into that config
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$system[$hash]['applicable']['users']
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= array_merge($system[$hash]['applicable']['users'], array($user));
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} else {
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$system[$hash] = $config;
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}
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}
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}
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}
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return array_values($system);
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}
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/**
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* Get the personal mount points of the current user
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* The returned array is not in the same format as getUserMountPoints()
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* @return array
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*/
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public static function getPersonalMountPoints() {
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$mountPoints = self::readData(OCP\User::getUser());
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$backEnds = self::getBackends();
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$uid = OCP\User::getUser();
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$personal = array();
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if (isset($mountPoints[self::MOUNT_TYPE_USER][$uid])) {
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foreach ($mountPoints[self::MOUNT_TYPE_USER][$uid] as $mountPoint => $mount) {
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// Update old classes to new namespace
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if (strpos($mount['class'], 'OC_Filestorage_') !== false) {
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$mount['class'] = '\OC\Files\Storage\\'.substr($mount['class'], 15);
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}
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$mount['options'] = self::decryptPasswords($mount['options']);
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$personal[] = array(
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'class' => $mount['class'],
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// Remove '/uid/files/' from mount point
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'mountpoint' => substr($mountPoint, strlen($uid) + 8),
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'backend' => $backEnds[$mount['class']]['backend'],
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'options' => $mount['options'],
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'status' => self::getBackendStatus($mount['class'], $mount['options'], true)
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);
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}
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}
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return $personal;
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}
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/**
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* Test connecting using the given backend configuration
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* @param string $class backend class name
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* @param array $options backend configuration options
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* @return bool true if the connection succeeded, false otherwise
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*/
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private static function getBackendStatus($class, $options, $isPersonal) {
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if (self::$skipTest) {
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return true;
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}
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foreach ($options as &$option) {
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$option = self::setUserVars(OCP\User::getUser(), $option);
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}
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if (class_exists($class)) {
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try {
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$storage = new $class($options);
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return $storage->test($isPersonal);
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} catch (Exception $exception) {
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\OCP\Util::logException('files_external', $exception);
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return false;
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}
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}
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return false;
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}
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/**
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* Add a mount point to the filesystem
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* @param string $mountPoint Mount point
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* @param string $class Backend class
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* @param array Backend parameters for the class
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* @param string $mountType MOUNT_TYPE_GROUP | MOUNT_TYPE_USER
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* @param string $applicable User or group to apply mount to
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* @param bool Personal or system mount point i.e. is this being called from the personal or admin page
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* @return boolean
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*/
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public static function addMountPoint($mountPoint,
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$class,
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$classOptions,
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$mountType,
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$applicable,
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$isPersonal = false) {
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$backends = self::getBackends();
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$mountPoint = OC\Files\Filesystem::normalizePath($mountPoint);
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if ($mountPoint === '' || $mountPoint === '/') {
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// can't mount at root folder
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return false;
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}
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if (!isset($backends[$class])) {
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// invalid backend
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return false;
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}
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if ($isPersonal) {
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// Verify that the mount point applies for the current user
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// Prevent non-admin users from mounting local storage and other disabled backends
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$allowed_backends = self::getPersonalBackends();
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if ($applicable != OCP\User::getUser() || !isset($allowed_backends[$class])) {
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return false;
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}
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$mountPoint = '/'.$applicable.'/files/'.ltrim($mountPoint, '/');
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} else {
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$mountPoint = '/$user/files/'.ltrim($mountPoint, '/');
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}
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$mount = array($applicable => array(
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$mountPoint => array(
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'class' => $class,
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'options' => self::encryptPasswords($classOptions))
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)
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);
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$mountPoints = self::readData($isPersonal ? OCP\User::getUser() : NULL);
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// Merge the new mount point into the current mount points
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if (isset($mountPoints[$mountType])) {
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if (isset($mountPoints[$mountType][$applicable])) {
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$mountPoints[$mountType][$applicable]
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= array_merge($mountPoints[$mountType][$applicable], $mount[$applicable]);
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} else {
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$mountPoints[$mountType] = array_merge($mountPoints[$mountType], $mount);
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}
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} else {
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$mountPoints[$mountType] = $mount;
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}
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self::writeData($isPersonal ? OCP\User::getUser() : NULL, $mountPoints);
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return self::getBackendStatus($class, $classOptions, $isPersonal);
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}
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/**
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*
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* @param string Mount point
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* @param string MOUNT_TYPE_GROUP | MOUNT_TYPE_USER
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* @param string User or group to remove mount from
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* @param bool Personal or system mount point
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* @return bool
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*/
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public static function removeMountPoint($mountPoint, $mountType, $applicable, $isPersonal = false) {
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// Verify that the mount point applies for the current user
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if ($isPersonal) {
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if ($applicable != OCP\User::getUser()) {
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return false;
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}
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$mountPoint = '/'.$applicable.'/files/'.ltrim($mountPoint, '/');
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} else {
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$mountPoint = '/$user/files/'.ltrim($mountPoint, '/');
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}
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$mountPoints = self::readData($isPersonal ? OCP\User::getUser() : NULL);
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// Remove mount point
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unset($mountPoints[$mountType][$applicable][$mountPoint]);
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// Unset parent arrays if empty
|
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if (empty($mountPoints[$mountType][$applicable])) {
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unset($mountPoints[$mountType][$applicable]);
|
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if (empty($mountPoints[$mountType])) {
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unset($mountPoints[$mountType]);
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}
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}
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self::writeData($isPersonal ? OCP\User::getUser() : NULL, $mountPoints);
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return true;
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}
|
|
|
|
/**
|
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* Read the mount points in the config file into an array
|
|
* @param string|null $user If not null, personal for $user, otherwise system
|
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* @return array
|
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*/
|
|
private static function readData($user = NULL) {
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$parser = new \OC\ArrayParser();
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if (isset($user)) {
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$phpFile = OC_User::getHome($user).'/mount.php';
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$jsonFile = OC_User::getHome($user).'/mount.json';
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} else {
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$phpFile = OC::$SERVERROOT.'/config/mount.php';
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$datadir = \OC_Config::getValue('datadirectory', \OC::$SERVERROOT . '/data/');
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$jsonFile = \OC_Config::getValue('mount_file', $datadir . '/mount.json');
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}
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if (is_file($jsonFile)) {
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$mountPoints = json_decode(file_get_contents($jsonFile), true);
|
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if (is_array($mountPoints)) {
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return $mountPoints;
|
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}
|
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} elseif (is_file($phpFile)) {
|
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$mountPoints = $parser->parsePHP(file_get_contents($phpFile));
|
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if (is_array($mountPoints)) {
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return $mountPoints;
|
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}
|
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}
|
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return array();
|
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}
|
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|
|
/**
|
|
* Write the mount points to the config file
|
|
* @param string|null $user If not null, personal for $user, otherwise system
|
|
* @param array $data Mount points
|
|
*/
|
|
private static function writeData($user, $data) {
|
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if (isset($user)) {
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$file = OC_User::getHome($user).'/mount.json';
|
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} else {
|
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$datadir = \OC_Config::getValue('datadirectory', \OC::$SERVERROOT . '/data/');
|
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$file = \OC_Config::getValue('mount_file', $datadir . '/mount.json');
|
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}
|
|
$options = 0;
|
|
if (defined('JSON_PRETTY_PRINT')) {
|
|
// only for PHP >= 5.4
|
|
$options = JSON_PRETTY_PRINT;
|
|
}
|
|
$content = json_encode($data, $options);
|
|
@file_put_contents($file, $content);
|
|
@chmod($file, 0640);
|
|
}
|
|
|
|
/**
|
|
* Returns all user uploaded ssl root certificates
|
|
* @return array
|
|
*/
|
|
public static function getCertificates() {
|
|
$path=OC_User::getHome(OC_User::getUser()) . '/files_external/uploads/';
|
|
\OCP\Util::writeLog('files_external', 'checking path '.$path, \OCP\Util::INFO);
|
|
if ( ! is_dir($path)) {
|
|
//path might not exist (e.g. non-standard OC_User::getHome() value)
|
|
//in this case create full path using 3rd (recursive=true) parameter.
|
|
mkdir($path, 0777, true);
|
|
}
|
|
$result = array();
|
|
$handle = opendir($path);
|
|
if(!is_resource($handle)) {
|
|
return array();
|
|
}
|
|
while (false !== ($file = readdir($handle))) {
|
|
if ($file != '.' && $file != '..') $result[] = $file;
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* creates certificate bundle
|
|
*/
|
|
public static function createCertificateBundle() {
|
|
$path=OC_User::getHome(OC_User::getUser()) . '/files_external';
|
|
|
|
$certs = OC_Mount_Config::getCertificates();
|
|
$fh_certs = fopen($path."/rootcerts.crt", 'w');
|
|
foreach ($certs as $cert) {
|
|
$file=$path.'/uploads/'.$cert;
|
|
$fh = fopen($file, "r");
|
|
$data = fread($fh, filesize($file));
|
|
fclose($fh);
|
|
if (strpos($data, 'BEGIN CERTIFICATE')) {
|
|
fwrite($fh_certs, $data);
|
|
fwrite($fh_certs, "\r\n");
|
|
}
|
|
}
|
|
|
|
fclose($fh_certs);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* check dependencies
|
|
*/
|
|
public static function checkDependencies() {
|
|
$dependencies = array();
|
|
foreach (OC_Mount_Config::$backends as $class => $backend) {
|
|
if (isset($backend['has_dependencies']) and $backend['has_dependencies'] === true) {
|
|
$result = $class::checkDependencies();
|
|
if ($result !== true) {
|
|
if (!is_array($result)) {
|
|
$result = array($result);
|
|
}
|
|
foreach ($result as $key => $value) {
|
|
if (is_numeric($key)) {
|
|
OC_Mount_Config::addDependency($dependencies, $value, $backend['backend']);
|
|
} else {
|
|
OC_Mount_Config::addDependency($dependencies, $key, $backend['backend'], $value);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (count($dependencies) > 0) {
|
|
return OC_Mount_Config::generateDependencyMessage($dependencies);
|
|
}
|
|
return '';
|
|
}
|
|
|
|
private static function addDependency(&$dependencies, $module, $backend, $message=null) {
|
|
if (!isset($dependencies[$module])) {
|
|
$dependencies[$module] = array();
|
|
}
|
|
|
|
if ($message === null) {
|
|
$dependencies[$module][] = $backend;
|
|
} else {
|
|
$dependencies[$module][] = array('backend' => $backend, 'message' => $message);
|
|
}
|
|
}
|
|
|
|
private static function generateDependencyMessage($dependencies) {
|
|
$l = new \OC_L10N('files_external');
|
|
$dependencyMessage = '';
|
|
foreach ($dependencies as $module => $backends) {
|
|
$dependencyGroup = array();
|
|
foreach ($backends as $backend) {
|
|
if (is_array($backend)) {
|
|
$dependencyMessage .= '<br />' . $l->t('<b>Note:</b> ') . $backend['message'];
|
|
} else {
|
|
$dependencyGroup[] = $backend;
|
|
}
|
|
}
|
|
|
|
if (count($dependencyGroup) > 0) {
|
|
$backends = '';
|
|
for ($i = 0; $i < count($dependencyGroup); $i++) {
|
|
if ($i > 0 && $i === count($dependencyGroup) - 1) {
|
|
$backends .= $l->t(' and ');
|
|
} elseif ($i > 0) {
|
|
$backends .= ', ';
|
|
}
|
|
$backends .= '<i>' . $dependencyGroup[$i] . '</i>';
|
|
}
|
|
$dependencyMessage .= '<br />' . OC_Mount_Config::getSingleDependencyMessage($l, $module, $backends);
|
|
}
|
|
}
|
|
return $dependencyMessage;
|
|
}
|
|
|
|
/**
|
|
* Returns a dependency missing message
|
|
* @param $l OC_L10N
|
|
* @param $module string
|
|
* @param $backend string
|
|
* @return string
|
|
*/
|
|
private static function getSingleDependencyMessage($l, $module, $backend) {
|
|
switch (strtolower($module)) {
|
|
case 'curl':
|
|
return $l->t('<b>Note:</b> The cURL support in PHP is not enabled or installed. Mounting of %s is not possible. Please ask your system administrator to install it.', $backend);
|
|
case 'ftp':
|
|
return $l->t('<b>Note:</b> The FTP support in PHP is not enabled or installed. Mounting of %s is not possible. Please ask your system administrator to install it.', $backend);
|
|
default:
|
|
return $l->t('<b>Note:</b> "%s" is not installed. Mounting of %s is not possible. Please ask your system administrator to install it.', array($module, $backend));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Encrypt passwords in the given config options
|
|
* @param array $options mount options
|
|
* @return array updated options
|
|
*/
|
|
private static function encryptPasswords($options) {
|
|
if (isset($options['password'])) {
|
|
$options['password_encrypted'] = self::encryptPassword($options['password']);
|
|
// do not unset the password, we want to keep the keys order
|
|
// on load... because that's how the UI currently works
|
|
$options['password'] = '';
|
|
}
|
|
return $options;
|
|
}
|
|
|
|
/**
|
|
* Decrypt passwords in the given config options
|
|
* @param array $options mount options
|
|
* @return array updated options
|
|
*/
|
|
private static function decryptPasswords($options) {
|
|
// note: legacy options might still have the unencrypted password in the "password" field
|
|
if (isset($options['password_encrypted'])) {
|
|
$options['password'] = self::decryptPassword($options['password_encrypted']);
|
|
unset($options['password_encrypted']);
|
|
}
|
|
return $options;
|
|
}
|
|
|
|
/**
|
|
* Encrypt a single password
|
|
* @param string $password plain text password
|
|
* @return encrypted password
|
|
*/
|
|
private static function encryptPassword($password) {
|
|
$cipher = self::getCipher();
|
|
$iv = \OCP\Util::generateRandomBytes(16);
|
|
$cipher->setIV($iv);
|
|
return base64_encode($iv . $cipher->encrypt($password));
|
|
}
|
|
|
|
/**
|
|
* Decrypts a single password
|
|
* @param string $encryptedPassword encrypted password
|
|
* @return plain text password
|
|
*/
|
|
private static function decryptPassword($encryptedPassword) {
|
|
$cipher = self::getCipher();
|
|
$binaryPassword = base64_decode($encryptedPassword);
|
|
$iv = substr($binaryPassword, 0, 16);
|
|
$cipher->setIV($iv);
|
|
$binaryPassword = substr($binaryPassword, 16);
|
|
return $cipher->decrypt($binaryPassword);
|
|
}
|
|
|
|
/**
|
|
* Returns the encryption cipher
|
|
*/
|
|
private static function getCipher() {
|
|
if (!class_exists('Crypt_AES', false)) {
|
|
include('Crypt/AES.php');
|
|
}
|
|
$cipher = new Crypt_AES(CRYPT_AES_MODE_CBC);
|
|
$cipher->setKey(\OCP\Config::getSystemValue('passwordsalt'));
|
|
return $cipher;
|
|
}
|
|
|
|
/**
|
|
* Computes a hash based on the given configuration.
|
|
* This is mostly used to find out whether configurations
|
|
* are the same.
|
|
*/
|
|
private static function makeConfigHash($config) {
|
|
$data = json_encode(
|
|
array(
|
|
'c' => $config['class'],
|
|
'm' => $config['mountpoint'],
|
|
'o' => $config['options']
|
|
)
|
|
);
|
|
return hash('md5', $data);
|
|
}
|
|
}
|