nextcloud/apps/files_external/lib/webdav.php

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<?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.
*/
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namespace OC\Files\Storage;
class DAV extends \OC\Files\Storage\Common{
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private $password;
private $user;
private $host;
private $secure;
private $root;
private $ready;
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/**
* @var \Sabre_DAV_Client
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*/
private $client;
private static $tempFiles=array();
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public function __construct($params) {
if (isset($params['host']) && isset($params['user']) && isset($params['password'])) {
$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)!='/') {
$this->root.='/';
}
} else {
throw new \Exception();
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}
}
private function init(){
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if($this->ready) {
return;
}
$this->ready = true;
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$settings = array(
'baseUri' => $this->createBaseUri(),
'userName' => $this->user,
'password' => $this->password,
);
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$this->client = new \Sabre_DAV_Client($settings);
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$caview = \OCP\Files::getStorage('files_external');
if ($caview) {
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$certPath=\OCP\Config::getSystemValue('datadirectory').$caview->getAbsolutePath("").'rootcerts.crt';
if (file_exists($certPath)) {
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$this->client->addTrustedCertificates($certPath);
}
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}
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}
public function getId(){
return 'webdav::' . $this->user . '@' . $this->host . '/' . $this->root;
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}
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private function createBaseUri() {
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$baseUri='http';
if ($this->secure) {
$baseUri.='s';
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}
$baseUri.='://'.$this->host.$this->root;
return $baseUri;
}
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public function mkdir($path) {
$this->init();
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$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) {
$this->init();
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$path=$this->cleanPath($path);
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return $this->simpleResponse('DELETE', $path, null, 204);
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}
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public function opendir($path) {
$this->init();
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$path=$this->cleanPath($path);
try {
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$response=$this->client->propfind($path, array(), 1);
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$id=md5('webdav'.$this->root.$path);
$content = array();
$files=array_keys($response);
array_shift($files);//the first entry is the current directory
foreach ($files as $file) {
$file = urldecode(basename($file));
$content[]=$file;
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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 $e) {
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return false;
}
}
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public function filetype($path) {
$this->init();
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$path=$this->cleanPath($path);
try {
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$response=$this->client->propfind($path, array('{DAV:}resourcetype'));
$responseType=$response["{DAV:}resourcetype"]->resourceType;
return (count($responseType)>0 and $responseType[0]=="{DAV:}collection")?'dir':'file';
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} catch(\Exception $e) {
error_log($e->getMessage());
\OCP\Util::writeLog("webdav client", \OCP\Util::sanitizeHTML($e->getMessage()), \OCP\Util::ERROR);
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return false;
}
}
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public function isReadable($path) {
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return true;//not properly supported
}
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public function isUpdatable($path) {
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return true;//not properly supported
}
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public function file_exists($path) {
$this->init();
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$path=$this->cleanPath($path);
try {
$this->client->propfind($path, array('{DAV:}resourcetype'));
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return true;//no 404 exception
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} catch(\Exception $e) {
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return false;
}
}
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public function unlink($path) {
$this->init();
return $this->simpleResponse('DELETE', $path, null, 204);
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}
public function fopen($path, $mode) {
$this->init();
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$path=$this->cleanPath($path);
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switch($mode) {
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case 'r':
case 'rb':
if ( ! $this->file_exists($path)) {
return false;
}
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//straight up curl instead of sabredav here, sabredav put's the entire get result in memory
$curl = curl_init();
$fp = fopen('php://temp', 'r+');
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curl_setopt($curl, CURLOPT_USERPWD, $this->user.':'.$this->password);
curl_setopt($curl, CURLOPT_URL, $this->createBaseUri().str_replace(' ', '%20', $path));
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curl_setopt($curl, CURLOPT_FILE, $fp);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
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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) {
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$ext=substr($path, strrpos($path, '.'));
} else {
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$ext='';
}
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$tmpFile = \OCP\Files::tmpFile($ext);
\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
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if($this->file_exists($path)) {
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$this->getFile($path, $tmpFile);
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}
self::$tempFiles[$tmpFile]=$path;
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return fopen('close://'.$tmpFile, $mode);
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}
}
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public function writeBack($tmpFile) {
if (isset(self::$tempFiles[$tmpFile])) {
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$this->uploadFile($tmpFile, self::$tempFiles[$tmpFile]);
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unlink($tmpFile);
}
}
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public function free_space($path) {
$this->init();
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$path=$this->cleanPath($path);
try {
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$response=$this->client->propfind($path, array('{DAV:}quota-available-bytes'));
if (isset($response['{DAV:}quota-available-bytes'])) {
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return (int)$response['{DAV:}quota-available-bytes'];
} else {
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return 0;
}
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} catch(\Exception $e) {
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return \OC\Files\SPACE_UNKNOWN;
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}
}
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public function touch($path, $mtime=null) {
$this->init();
if (is_null($mtime)) {
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$mtime=time();
}
$path=$this->cleanPath($path);
// if file exists, update the mtime, else create a new empty file
if ($this->file_exists($path)) {
$this->client->proppatch($path, array('{DAV:}lastmodified' => $mtime));
} else {
$this->file_put_contents($path, '');
}
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}
public function getFile($path, $target) {
$this->init();
$source=$this->fopen($path, 'r');
file_put_contents($target, $source);
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}
public function uploadFile($path, $target) {
$this->init();
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$source=fopen($path, 'r');
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$curl = curl_init();
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curl_setopt($curl, CURLOPT_USERPWD, $this->user.':'.$this->password);
curl_setopt($curl, CURLOPT_URL, $this->createBaseUri().str_replace(' ', '%20', $target));
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curl_setopt($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) {
$this->init();
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$path1=$this->cleanPath($path1);
$path2=$this->root.$this->cleanPath($path2);
try {
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$this->client->request('MOVE', $path1, null, array('Destination'=>$path2));
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return true;
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} catch(\Exception $e) {
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return false;
}
}
public function copy($path1, $path2) {
$this->init();
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$path1=$this->cleanPath($path1);
$path2=$this->root.$this->cleanPath($path2);
try {
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$this->client->request('COPY', $path1, null, array('Destination'=>$path2));
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return true;
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} catch(\Exception $e) {
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return false;
}
}
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public function stat($path) {
$this->init();
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$path=$this->cleanPath($path);
try {
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$response=$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,
);
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} catch(\Exception $e) {
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return array();
}
}
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public function getMimeType($path) {
$this->init();
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$path=$this->cleanPath($path);
try {
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$response=$this->client->propfind($path, array('{DAV:}getcontenttype', '{DAV:}resourcetype'));
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$responseType=$response["{DAV:}resourcetype"]->resourceType;
$type=(count($responseType)>0 and $responseType[0]=="{DAV:}collection")?'dir':'file';
if ($type=='dir') {
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return 'httpd/unix-directory';
} elseif (isset($response['{DAV:}getcontenttype'])) {
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return $response['{DAV:}getcontenttype'];
} else {
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return false;
}
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} catch(\Exception $e) {
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return false;
}
}
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public function cleanPath($path) {
if ( ! $path || $path[0]=='/') {
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return substr($path, 1);
} else {
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return $path;
}
}
private function simpleResponse($method, $path, $body, $expected) {
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$path=$this->cleanPath($path);
try {
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$response=$this->client->request($method, $path, $body);
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return $response['statusCode']==$expected;
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} catch(\Exception $e) {
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return false;
}
}
}