* This file is licensed under the Affero General Public License version 3 or * later. * See the COPYING-README file. */ namespace OC\Files\Storage; set_include_path(get_include_path() . PATH_SEPARATOR . \OC_App::getAppPath('files_external') . '/3rdparty/phpseclib/phpseclib'); require 'Net/SFTP.php'; class SFTP extends \OC\Files\Storage\Common { private $host; private $user; private $password; private $root; private $client; private static $tempFiles = array(); public function __construct($params) { $this->host = $params['host']; $proto = strpos($this->host, '://'); if ($proto != false) { $this->host = substr($this->host, $proto+3); } $this->user = $params['user']; $this->password = $params['password']; $this->root = isset($params['root']) ? $this->cleanPath($params['root']) : '/'; if ($this->root[0] != '/') { $this->root = '/' . $this->root; } if (substr($this->root, -1, 1) != '/') { $this->root .= '/'; } $hostKeys = $this->readHostKeys(); $this->client = new \Net_SFTP($this->host); if (!$this->client->login($this->user, $this->password)) { throw new \Exception('Login failed'); } $currentHostKey = $this->client->getServerPublicHostKey(); if (array_key_exists($this->host, $hostKeys)) { if ($hostKeys[$this->host] != $currentHostKey) { throw new \Exception('Host public key does not match known key'); } } else { $hostKeys[$this->host] = $currentHostKey; $this->writeHostKeys($hostKeys); } } public function test() { if ( !isset($this->host) || !isset($this->user) || !isset($this->password) ) { return false; } return $this->client->nlist() !== false; } public function getId(){ return 'sftp::' . $this->user . '@' . $this->host . '/' . $this->root; } private function absPath($path) { return $this->root . $this->cleanPath($path); } private function hostKeysPath() { try { $storage_view = \OCP\Files::getStorage('files_external'); if ($storage_view) { return \OCP\Config::getSystemValue('datadirectory') . $storage_view->getAbsolutePath('') . 'ssh_hostKeys'; } } catch (\Exception $e) { } return false; } private function writeHostKeys($keys) { try { $keyPath = $this->hostKeysPath(); if ($keyPath && file_exists($keyPath)) { $fp = fopen($keyPath, 'w'); foreach ($keys as $host => $key) { fwrite($fp, $host . '::' . $key . "\n"); } fclose($fp); return true; } } catch (\Exception $e) { } return false; } private function readHostKeys() { try { $keyPath = $this->hostKeysPath(); if (file_exists($keyPath)) { $hosts = array(); $keys = array(); $lines = file($keyPath, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES); if ($lines) { foreach ($lines as $line) { $hostKeyArray = explode("::", $line, 2); if (count($hostKeyArray) == 2) { $hosts[] = $hostKeyArray[0]; $keys[] = $hostKeyArray[1]; } } return array_combine($hosts, $keys); } } } catch (\Exception $e) { } return array(); } public function mkdir($path) { try { return $this->client->mkdir($this->absPath($path)); } catch (\Exception $e) { return false; } } public function rmdir($path) { try { return $this->client->delete($this->absPath($path), true); } catch (\Exception $e) { return false; } } public function opendir($path) { try { $list = $this->client->nlist($this->absPath($path)); $id = md5('sftp:' . $path); $dirStream = array(); foreach($list as $file) { if ($file != '.' && $file != '..') { $dirStream[] = $file; } } \OC\Files\Stream\Dir::register($id, $dirStream); return opendir('fakedir://' . $id); } catch(\Exception $e) { return false; } } public function filetype($path) { try { $stat = $this->client->stat($this->absPath($path)); if ($stat['type'] == NET_SFTP_TYPE_REGULAR) { return 'file'; } if ($stat['type'] == NET_SFTP_TYPE_DIRECTORY) { return 'dir'; } } catch (\Exeption $e) { } return false; } public function file_exists($path) { try { return $this->client->stat($this->absPath($path)) !== false; } catch (\Exception $e) { return false; } } public function unlink($path) { try { return $this->client->delete($this->absPath($path), true); } catch (\Exception $e) { return false; } } public function fopen($path, $mode) { try { $absPath = $this->absPath($path); switch($mode) { case 'r': case 'rb': if ( !$this->file_exists($path)) { return false; } if (strrpos($path, '.')!==false) { $ext=substr($path, strrpos($path, '.')); } else { $ext=''; } $tmp = \OC_Helper::tmpFile($ext); $this->getFile($absPath, $tmp); return fopen($tmp, $mode); case 'w': case 'wb': case 'a': case 'ab': case 'r+': case 'w+': case 'wb+': case 'a+': case 'x': case 'x+': case 'c': case 'c+': if (strrpos($path, '.')!==false) { $ext=substr($path, strrpos($path, '.')); } else { $ext=''; } $tmpFile=\OC_Helper::tmpFile($ext); \OC\Files\Stream\Close::registerCallback( $tmpFile, array($this, 'writeBack') ); if ($this->file_exists($path)) { $this->getFile($absPath, $tmpFile); } self::$tempFiles[$tmpFile]=$absPath; return fopen('close://'.$tmpFile, $mode); } } catch (\Exception $e) { } return false; } public function writeBack($tmpFile) { if (array_key_exists($tmpFile, self::$tempFiles)) { $this->uploadFile($tmpFile, self::$tempFiles[$tmpFile]); unlink($tmpFile); unset(self::$tempFiles[$tmpFile]); } } public function touch($path, $mtime=null) { try { if (!is_null($mtime)) { return false; } if (!$this->file_exists($path)) { $this->client->put($this->absPath($path), ''); } else { return false; } } catch (\Exception $e) { return false; } return true; } public function getFile($path, $target) { $this->client->get($path, $target); } public function uploadFile($path, $target) { $this->client->put($target, $path, NET_SFTP_LOCAL_FILE); } public function rename($source, $target) { try { return $this->client->rename( $this->absPath($source), $this->absPath($target) ); } catch (\Exception $e) { return false; } } public function stat($path) { try { $stat = $this->client->stat($this->absPath($path)); $mtime = $stat ? $stat['mtime'] : -1; $size = $stat ? $stat['size'] : 0; return array('mtime' => $mtime, 'size' => $size, 'ctime' => -1); } catch (\Exception $e) { return false; } } } orage_full_warning'>artonge/fix/storage_full_warning Nextcloud server, a safe home for all your data: https://github.com/nextcloud/serverwww-data
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