505 lines
14 KiB
PHP
505 lines
14 KiB
PHP
<?php
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/**
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* Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\Files\Storage;
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use OCP\Files\StorageNotAvailableException;
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use Sabre\DAV\Exception;
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class DAV extends \OC\Files\Storage\Common {
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protected $password;
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protected $user;
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protected $host;
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protected $secure;
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protected $root;
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protected $certPath;
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protected $ready;
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/**
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* @var \Sabre\DAV\Client
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*/
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private $client;
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private static $tempFiles = array();
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public function __construct($params) {
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if (isset($params['host']) && isset($params['user']) && isset($params['password'])) {
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$host = $params['host'];
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//remove leading http[s], will be generated in createBaseUri()
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if (substr($host, 0, 8) == "https://") $host = substr($host, 8);
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else if (substr($host, 0, 7) == "http://") $host = substr($host, 7);
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$this->host = $host;
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$this->user = $params['user'];
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$this->password = $params['password'];
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if (isset($params['secure'])) {
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if (is_string($params['secure'])) {
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$this->secure = ($params['secure'] === 'true');
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} else {
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$this->secure = (bool)$params['secure'];
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}
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} else {
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$this->secure = false;
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}
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if ($this->secure === true) {
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$certPath = \OC_User::getHome(\OC_User::getUser()) . '/files_external/rootcerts.crt';
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if (file_exists($certPath)) {
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$this->certPath = $certPath;
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}
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}
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$this->root = isset($params['root']) ? $params['root'] : '/';
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if (!$this->root || $this->root[0] != '/') {
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$this->root = '/' . $this->root;
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}
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if (substr($this->root, -1, 1) != '/') {
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$this->root .= '/';
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}
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} else {
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throw new \Exception();
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}
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}
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private function init() {
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if ($this->ready) {
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return;
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}
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$this->ready = true;
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$settings = array(
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'baseUri' => $this->createBaseUri(),
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'userName' => $this->user,
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'password' => $this->password,
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);
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$this->client = new \Sabre\DAV\Client($settings);
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if ($this->secure === true && $this->certPath) {
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$this->client->addTrustedCertificates($this->certPath);
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}
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}
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public function getId() {
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return 'webdav::' . $this->user . '@' . $this->host . '/' . $this->root;
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}
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protected function createBaseUri() {
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$baseUri = 'http';
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if ($this->secure) {
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$baseUri .= 's';
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}
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$baseUri .= '://' . $this->host . $this->root;
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return $baseUri;
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}
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public function mkdir($path) {
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$this->init();
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$path = $this->cleanPath($path);
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return $this->simpleResponse('MKCOL', $path, null, 201);
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}
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public function rmdir($path) {
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$this->init();
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$path = $this->cleanPath($path) . '/';
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// FIXME: some WebDAV impl return 403 when trying to DELETE
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// a non-empty folder
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return $this->simpleResponse('DELETE', $path, null, 204);
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}
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public function opendir($path) {
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$this->init();
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$path = $this->cleanPath($path);
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try {
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$response = $this->client->propfind($this->encodePath($path), array(), 1);
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$id = md5('webdav' . $this->root . $path);
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$content = array();
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$files = array_keys($response);
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array_shift($files); //the first entry is the current directory
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foreach ($files as $file) {
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$file = urldecode(basename($file));
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$content[] = $file;
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}
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\OC\Files\Stream\Dir::register($id, $content);
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return opendir('fakedir://' . $id);
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} catch (\Exception $e) {
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return false;
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}
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}
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public function filetype($path) {
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$this->init();
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$path = $this->cleanPath($path);
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try {
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$response = $this->client->propfind($this->encodePath($path), array('{DAV:}resourcetype'));
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$responseType = array();
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if (isset($response["{DAV:}resourcetype"])) {
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$responseType = $response["{DAV:}resourcetype"]->resourceType;
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}
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return (count($responseType) > 0 and $responseType[0] == "{DAV:}collection") ? 'dir' : 'file';
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} catch (\Exception $e) {
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error_log($e->getMessage());
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\OCP\Util::writeLog("webdav client", \OCP\Util::sanitizeHTML($e->getMessage()), \OCP\Util::ERROR);
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return false;
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}
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}
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public function file_exists($path) {
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$this->init();
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$path = $this->cleanPath($path);
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try {
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$this->client->propfind($this->encodePath($path), array('{DAV:}resourcetype'));
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return true; //no 404 exception
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} catch (\Exception $e) {
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return false;
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}
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}
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public function unlink($path) {
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$this->init();
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return $this->simpleResponse('DELETE', $path, null, 204);
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}
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public function fopen($path, $mode) {
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$this->init();
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$path = $this->cleanPath($path);
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switch ($mode) {
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case 'r':
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case 'rb':
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if (!$this->file_exists($path)) {
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return false;
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}
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//straight up curl instead of sabredav here, sabredav put's the entire get result in memory
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$curl = curl_init();
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$fp = fopen('php://temp', 'r+');
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curl_setopt($curl, CURLOPT_USERPWD, $this->user . ':' . $this->password);
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curl_setopt($curl, CURLOPT_URL, $this->createBaseUri() . $this->encodePath($path));
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curl_setopt($curl, CURLOPT_FILE, $fp);
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curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
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if ($this->secure === true) {
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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
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curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 2);
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if ($this->certPath) {
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curl_setopt($curl, CURLOPT_CAINFO, $this->certPath);
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}
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}
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curl_exec($curl);
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$statusCode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
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if ($statusCode !== 200) {
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\OCP\Util::writeLog("webdav client", 'curl GET ' . curl_getinfo($curl, CURLINFO_EFFECTIVE_URL) . ' returned status code ' . $statusCode, \OCP\Util::ERROR);
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}
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curl_close($curl);
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rewind($fp);
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return $fp;
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case 'w':
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case 'wb':
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case 'a':
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case 'ab':
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case 'r+':
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case 'w+':
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case 'wb+':
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case 'a+':
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case 'x':
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case 'x+':
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case 'c':
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case 'c+':
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//emulate these
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if (strrpos($path, '.') !== false) {
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$ext = substr($path, strrpos($path, '.'));
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} else {
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$ext = '';
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}
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if ($this->file_exists($path)) {
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if (!$this->isUpdatable($path)) {
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return false;
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}
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$tmpFile = $this->getCachedFile($path);
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} else {
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if (!$this->isCreatable(dirname($path))) {
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return false;
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}
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$tmpFile = \OCP\Files::tmpFile($ext);
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}
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\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
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self::$tempFiles[$tmpFile] = $path;
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return fopen('close://' . $tmpFile, $mode);
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}
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}
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public function writeBack($tmpFile) {
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if (isset(self::$tempFiles[$tmpFile])) {
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$this->uploadFile($tmpFile, self::$tempFiles[$tmpFile]);
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unlink($tmpFile);
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}
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}
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public function free_space($path) {
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$this->init();
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$path = $this->cleanPath($path);
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try {
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$response = $this->client->propfind($this->encodePath($path), array('{DAV:}quota-available-bytes'));
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if (isset($response['{DAV:}quota-available-bytes'])) {
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return (int)$response['{DAV:}quota-available-bytes'];
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} else {
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return \OC\Files\SPACE_UNKNOWN;
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}
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} catch (\Exception $e) {
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return \OC\Files\SPACE_UNKNOWN;
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}
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}
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public function touch($path, $mtime = null) {
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$this->init();
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if (is_null($mtime)) {
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$mtime = time();
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}
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$path = $this->cleanPath($path);
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// if file exists, update the mtime, else create a new empty file
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if ($this->file_exists($path)) {
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try {
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$this->client->proppatch($this->encodePath($path), array('{DAV:}lastmodified' => $mtime));
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} catch (\Sabre\DAV\Exception\NotImplemented $e) {
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return false;
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}
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} else {
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$this->file_put_contents($path, '');
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}
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return true;
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}
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protected function uploadFile($path, $target) {
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$this->init();
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$source = fopen($path, 'r');
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$curl = curl_init();
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curl_setopt($curl, CURLOPT_USERPWD, $this->user . ':' . $this->password);
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curl_setopt($curl, CURLOPT_URL, $this->createBaseUri() . $this->encodePath($target));
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curl_setopt($curl, CURLOPT_BINARYTRANSFER, true);
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curl_setopt($curl, CURLOPT_INFILE, $source); // file pointer
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curl_setopt($curl, CURLOPT_INFILESIZE, filesize($path));
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curl_setopt($curl, CURLOPT_PUT, true);
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
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if ($this->secure === true) {
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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
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curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 2);
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if ($this->certPath) {
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curl_setopt($curl, CURLOPT_CAINFO, $this->certPath);
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}
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}
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curl_exec($curl);
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$statusCode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
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if ($statusCode !== 200) {
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\OCP\Util::writeLog("webdav client", 'curl GET ' . curl_getinfo($curl, CURLINFO_EFFECTIVE_URL) . ' returned status code ' . $statusCode, \OCP\Util::ERROR);
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}
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curl_close($curl);
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fclose($source);
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$this->removeCachedFile($target);
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}
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public function rename($path1, $path2) {
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$this->init();
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$path1 = $this->encodePath($this->cleanPath($path1));
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$path2 = $this->createBaseUri() . $this->encodePath($this->cleanPath($path2));
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try {
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$this->client->request('MOVE', $path1, null, array('Destination' => $path2));
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$this->removeCachedFile($path1);
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$this->removeCachedFile($path2);
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return true;
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} catch (\Exception $e) {
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return false;
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}
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}
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public function copy($path1, $path2) {
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$this->init();
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$path1 = $this->encodePath($this->cleanPath($path1));
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$path2 = $this->createBaseUri() . $this->encodePath($this->cleanPath($path2));
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try {
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$this->client->request('COPY', $path1, null, array('Destination' => $path2));
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$this->removeCachedFile($path2);
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return true;
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} catch (\Exception $e) {
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return false;
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}
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}
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public function stat($path) {
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$this->init();
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$path = $this->cleanPath($path);
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try {
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$response = $this->client->propfind($this->encodePath($path), array('{DAV:}getlastmodified', '{DAV:}getcontentlength'));
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return array(
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'mtime' => strtotime($response['{DAV:}getlastmodified']),
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'size' => (int)isset($response['{DAV:}getcontentlength']) ? $response['{DAV:}getcontentlength'] : 0,
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);
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} catch (\Exception $e) {
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return array();
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}
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}
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public function getMimeType($path) {
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$this->init();
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$path = $this->cleanPath($path);
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try {
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$response = $this->client->propfind($this->encodePath($path), array('{DAV:}getcontenttype', '{DAV:}resourcetype'));
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$responseType = array();
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if (isset($response["{DAV:}resourcetype"])) {
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$responseType = $response["{DAV:}resourcetype"]->resourceType;
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}
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$type = (count($responseType) > 0 and $responseType[0] == "{DAV:}collection") ? 'dir' : 'file';
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if ($type == 'dir') {
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return 'httpd/unix-directory';
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} elseif (isset($response['{DAV:}getcontenttype'])) {
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return $response['{DAV:}getcontenttype'];
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} else {
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return false;
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}
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} catch (\Exception $e) {
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return false;
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}
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}
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/**
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* @param string $path
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*/
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public function cleanPath($path) {
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if ($path === "") {
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return $path;
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}
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$path = \OC\Files\Filesystem::normalizePath($path);
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// remove leading slash
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return substr($path, 1);
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}
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/**
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* URL encodes the given path but keeps the slashes
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*
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* @param string $path to encode
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* @return string encoded path
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*/
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private function encodePath($path) {
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// slashes need to stay
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return str_replace('%2F', '/', rawurlencode($path));
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}
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/**
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* @param string $method
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* @param string $path
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* @param integer $expected
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*/
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private function simpleResponse($method, $path, $body, $expected) {
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$path = $this->cleanPath($path);
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try {
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$response = $this->client->request($method, $this->encodePath($path), $body);
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return $response['statusCode'] == $expected;
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} catch (\Exception $e) {
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return false;
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}
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}
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/**
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* check if curl is installed
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*/
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public static function checkDependencies() {
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if (function_exists('curl_init')) {
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return true;
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} else {
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return array('curl');
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}
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}
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public function isUpdatable($path) {
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return (bool)($this->getPermissions($path) & \OCP\PERMISSION_UPDATE);
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}
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public function isCreatable($path) {
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return (bool)($this->getPermissions($path) & \OCP\PERMISSION_CREATE);
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}
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public function isSharable($path) {
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return (bool)($this->getPermissions($path) & \OCP\PERMISSION_SHARE);
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}
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public function isDeletable($path) {
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return (bool)($this->getPermissions($path) & \OCP\PERMISSION_DELETE);
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}
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public function getPermissions($path) {
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$this->init();
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$response = $this->client->propfind($this->encodePath($path), array('{http://owncloud.org/ns}permissions'));
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if (isset($response['{http://owncloud.org/ns}permissions'])) {
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return $this->parsePermissions($response['{http://owncloud.org/ns}permissions']);
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} else if ($this->is_dir($path)) {
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return \OCP\PERMISSION_ALL;
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} else if ($this->file_exists($path)) {
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return \OCP\PERMISSION_ALL - \OCP\PERMISSION_CREATE;
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} else {
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return 0;
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}
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}
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/**
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* @param string $permissionsString
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* @return int
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*/
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protected function parsePermissions($permissionsString) {
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$permissions = \OCP\PERMISSION_READ;
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if (strpos($permissionsString, 'R') !== false) {
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$permissions |= \OCP\PERMISSION_SHARE;
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}
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if (strpos($permissionsString, 'D') !== false) {
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$permissions |= \OCP\PERMISSION_DELETE;
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}
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if (strpos($permissionsString, 'W') !== false) {
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$permissions |= \OCP\PERMISSION_UPDATE;
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}
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if (strpos($permissionsString, 'CK') !== false) {
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$permissions |= \OCP\PERMISSION_CREATE;
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$permissions |= \OCP\PERMISSION_UPDATE;
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}
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return $permissions;
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}
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/**
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* check if a file or folder has been updated since $time
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*
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* @param string $path
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* @param int $time
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* @throws \OCP\Files\StorageNotAvailableException
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* @return bool
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*/
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public function hasUpdated($path, $time) {
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$this->init();
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try {
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$response = $this->client->propfind($this->encodePath($path), array(
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'{DAV:}getlastmodified',
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'{DAV:}getetag',
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'{http://owncloud.org/ns}permissions'
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));
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if (isset($response['{DAV:}getetag'])) {
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$cachedData = $this->getCache()->get($path);
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$etag = trim($response['{DAV:}getetag'], '"');
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if ($cachedData['etag'] !== $etag) {
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return true;
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} else if (isset($response['{http://owncloud.org/ns}permissions'])) {
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$permissions = $this->parsePermissions($response['{http://owncloud.org/ns}permissions']);
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return $permissions !== $cachedData['permissions'];
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} else {
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return false;
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}
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} else {
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$remoteMtime = strtotime($response['{DAV:}getlastmodified']);
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return $remoteMtime > $time;
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}
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} catch (Exception\NotFound $e) {
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return false;
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} catch (Exception $e) {
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throw new StorageNotAvailableException();
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}
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}
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}
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