nextcloud/apps/files_external/lib/webdav.php

311 lines
8.1 KiB
PHP

<?php
/**
* Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
class OC_FileStorage_DAV extends OC_Filestorage_Common{
private $password;
private $user;
private $host;
private $secure;
private $root;
/**
* @var Sabre_DAV_Client
*/
private $client;
private static $tempFiles=array();
public function __construct($params) {
$host = $params['host'];
//remove leading http[s], will be generated in createBaseUri()
if (substr($host, 0, 8) == "https://") $host = substr($host, 8);
else if (substr($host, 0, 7) == "http://") $host = substr($host, 7);
$this->host=$host;
$this->user=$params['user'];
$this->password=$params['password'];
if (isset($params['secure'])) {
if (is_string($params['secure'])) {
$this->secure = ($params['secure'] === 'true');
} else {
$this->secure = (bool)$params['secure'];
}
} else {
$this->secure = false;
}
$this->root=isset($params['root'])?$params['root']:'/';
if ( ! $this->root || $this->root[0]!='/') {
$this->root='/'.$this->root;
}
if (substr($this->root, -1, 1)!='/') {
$this->root.='/';
}
$settings = array(
'baseUri' => $this->createBaseUri(),
'userName' => $this->user,
'password' => $this->password,
);
$this->client = new Sabre_DAV_Client($settings);
$caview = \OCP\Files::getStorage('files_external');
if ($caview) {
$certPath=\OCP\Config::getSystemValue('datadirectory').$caview->getAbsolutePath("").'rootcerts.crt';
if (file_exists($certPath)) {
$this->client->addTrustedCertificates($certPath);
}
}
//create the root folder if necesary
$this->mkdir('');
}
private function createBaseUri() {
$baseUri='http';
if ($this->secure) {
$baseUri.='s';
}
$baseUri.='://'.$this->host.$this->root;
return $baseUri;
}
public function mkdir($path) {
$path=$this->cleanPath($path);
return $this->simpleResponse('MKCOL', $path, null, 201);
}
public function rmdir($path) {
$path=$this->cleanPath($path);
return $this->simpleResponse('DELETE', $path, null, 204);
}
public function opendir($path) {
$path=$this->cleanPath($path);
try {
$response=$this->client->propfind($path, array(), 1);
$id=md5('webdav'.$this->root.$path);
OC_FakeDirStream::$dirs[$id]=array();
$files=array_keys($response);
array_shift($files);//the first entry is the current directory
foreach ($files as $file) {
$file = urldecode(basename($file));
OC_FakeDirStream::$dirs[$id][]=$file;
}
return opendir('fakedir://'.$id);
} catch(Exception $e) {
return false;
}
}
public function filetype($path) {
$path=$this->cleanPath($path);
try {
$response=$this->client->propfind($path, array('{DAV:}resourcetype'));
$responseType=$response["{DAV:}resourcetype"]->resourceType;
return (count($responseType)>0 and $responseType[0]=="{DAV:}collection")?'dir':'file';
} catch(Exception $e) {
error_log($e->getMessage());
\OCP\Util::writeLog("webdav client", \OCP\Util::sanitizeHTML($e->getMessage()), \OCP\Util::ERROR);
return false;
}
}
public function isReadable($path) {
return true;//not properly supported
}
public function isUpdatable($path) {
return true;//not properly supported
}
public function file_exists($path) {
$path=$this->cleanPath($path);
try {
$this->client->propfind($path, array('{DAV:}resourcetype'));
return true;//no 404 exception
} catch(Exception $e) {
return false;
}
}
public function unlink($path) {
return $this->simpleResponse('DELETE', $path, null, 204);
}
public function fopen($path, $mode) {
$path=$this->cleanPath($path);
switch($mode) {
case 'r':
case 'rb':
if ( ! $this->file_exists($path)) {
return false;
}
//straight up curl instead of sabredav here, sabredav put's the entire get result in memory
$curl = curl_init();
$fp = fopen('php://temp', 'r+');
curl_setopt($curl, CURLOPT_USERPWD, $this->user.':'.$this->password);
curl_setopt($curl, CURLOPT_URL, $this->createBaseUri().$path);
curl_setopt($curl, CURLOPT_FILE, $fp);
curl_exec ($curl);
curl_close ($curl);
rewind($fp);
return $fp;
case 'w':
case 'wb':
case 'a':
case 'ab':
case 'r+':
case 'w+':
case 'wb+':
case 'a+':
case 'x':
case 'x+':
case 'c':
case 'c+':
//emulate these
if (strrpos($path, '.')!==false) {
$ext=substr($path, strrpos($path, '.'));
} else {
$ext='';
}
$tmpFile=OCP\Files::tmpFile($ext);
OC_CloseStreamWrapper::$callBacks[$tmpFile]=array($this, 'writeBack');
if ($this->file_exists($path)) {
$this->getFile($path, $tmpFile);
}
self::$tempFiles[$tmpFile]=$path;
return fopen('close://'.$tmpFile, $mode);
}
}
public function writeBack($tmpFile) {
if (isset(self::$tempFiles[$tmpFile])) {
$this->uploadFile($tmpFile, self::$tempFiles[$tmpFile]);
unlink($tmpFile);
}
}
public function free_space($path) {
$path=$this->cleanPath($path);
try {
$response=$this->client->propfind($path, array('{DAV:}quota-available-bytes'));
if (isset($response['{DAV:}quota-available-bytes'])) {
return (int)$response['{DAV:}quota-available-bytes'];
} else {
return 0;
}
} catch(Exception $e) {
return 0;
}
}
public function touch($path, $mtime=null) {
if (is_null($mtime)) {
$mtime=time();
}
$path=$this->cleanPath($path);
$this->client->proppatch($path, array('{DAV:}lastmodified' => $mtime));
}
public function getFile($path, $target) {
$source=$this->fopen($path, 'r');
file_put_contents($target, $source);
}
public function uploadFile($path, $target) {
$source=fopen($path, 'r');
$curl = curl_init();
curl_setopt($curl, CURLOPT_USERPWD, $this->user.':'.$this->password);
curl_setopt($curl, CURLOPT_URL, $this->createBaseUri().$target);
curl_setopt($curl, CURLOPT_BINARYTRANSFER, true);
curl_setopt($curl, CURLOPT_INFILE, $source); // file pointer
curl_setopt($curl, CURLOPT_INFILESIZE, filesize($path));
curl_setopt($curl, CURLOPT_PUT, true);
curl_exec ($curl);
curl_close ($curl);
}
public function rename($path1, $path2) {
$path1=$this->cleanPath($path1);
$path2=$this->root.$this->cleanPath($path2);
try {
$response=$this->client->request('MOVE', $path1, null, array('Destination'=>$path2));
return true;
} catch(Exception $e) {
echo $e;
echo 'fail';
var_dump($response);
return false;
}
}
public function copy($path1, $path2) {
$path1=$this->cleanPath($path1);
$path2=$this->root.$this->cleanPath($path2);
try {
$response=$this->client->request('COPY', $path1, null, array('Destination'=>$path2));
return true;
} catch(Exception $e) {
echo $e;
echo 'fail';
var_dump($response);
return false;
}
}
public function stat($path) {
$path=$this->cleanPath($path);
try {
$response=$this->client->propfind($path, array('{DAV:}getlastmodified', '{DAV:}getcontentlength'));
return array(
'mtime'=>strtotime($response['{DAV:}getlastmodified']),
'size'=>(int)isset($response['{DAV:}getcontentlength']) ? $response['{DAV:}getcontentlength'] : 0,
'ctime'=>-1,
);
} catch(Exception $e) {
return array();
}
}
public function getMimeType($path) {
$path=$this->cleanPath($path);
try {
$response=$this->client->propfind($path, array('{DAV:}getcontenttype', '{DAV:}resourcetype'));
$responseType=$response["{DAV:}resourcetype"]->resourceType;
$type=(count($responseType)>0 and $responseType[0]=="{DAV:}collection")?'dir':'file';
if ($type=='dir') {
return 'httpd/unix-directory';
} elseif (isset($response['{DAV:}getcontenttype'])) {
return $response['{DAV:}getcontenttype'];
} else {
return false;
}
} catch(Exception $e) {
return false;
}
}
private function cleanPath($path) {
if ( ! $path || $path[0]=='/') {
return substr($path, 1);
} else {
return $path;
}
}
private function simpleResponse($method, $path, $body, $expected) {
$path=$this->cleanPath($path);
try {
$response=$this->client->request($method, $path, $body);
return $response['statusCode']==$expected;
} catch(Exception $e) {
return false;
}
}
}