275 lines
6.4 KiB
PHP
275 lines
6.4 KiB
PHP
<?php
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/**
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* Copyright (c) 2012 Henrik Kjölhede <hkjolhede@gmail.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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set_include_path(get_include_path() . PATH_SEPARATOR . OC::$THIRDPARTYROOT . '/3rdparty/phpseclib/phpseclib');
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require('Net/SFTP.php');
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class OC_Filestorage_SFTP extends OC_Filestorage_Common {
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private $host;
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private $user;
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private $password;
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private $root;
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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($params['password'])) {
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throw new Exception("Required parameters not set");
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}
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$this->host = $params['host'];
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$proto = strpos($this->host, '://');
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if ($proto != false) {
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$this->host = substr($this->host, $proto+3);
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}
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$this->user = $params['user'];
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$this->password = $params['password'];
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$this->root = isset($params['root']) ? $params['root'] : '/';
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if ($this->root[0] != '/') $this->root = '/' . $this->root;
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if (substr($this->root, -1, 1) != '/') $this->root .= '/';
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$host_keys = $this->read_host_keys();
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$this->client = new Net_SFTP($this->host);
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if (!$this->client->login($this->user, $this->password)) {
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throw new Exception('Login failed');
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}
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$current_host_key = $this->client->getServerPublicHostKey();
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if (array_key_exists($this->host, $host_keys)) {
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if ($host_keys[$this->host] != $current_host_key) {
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throw new Exception('Host public key does not match known key');
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}
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} else {
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$host_keys[$this->host] = $current_host_key;
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$this->write_host_keys($host_keys);
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}
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}
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private function abs_path($path) {
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return $this->root . $path;
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}
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private function host_keys_path() {
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try {
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$storage_view = \OCP\Files::getStorage('files_external');
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if ($storage_view) {
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return \OCP\Config::getSystemValue('datadirectory') .
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$storage_view->getAbsolutePath('') .
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'ssh_host_keys';
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}
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} catch (Exception $e) {
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}
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return false;
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}
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private function write_host_keys($keys) {
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try {
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$key_path = $this->host_keys_path();
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$fp = fopen($key_path, 'w');
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foreach ($keys as $host => $key) {
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fwrite($fp, $host . '::' . $key . "\n");
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}
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fclose($fp);
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return true;
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} catch (Exception $e) {
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return false;
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}
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}
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private function read_host_keys() {
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try {
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$key_path = $this->host_keys_path();
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if (file_exists($key_path)) {
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$hosts = array();
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$keys = array();
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$lines = file($key_path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
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if ($lines) {
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foreach ($lines as $line) {
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$host_key_arr = explode("::", $line, 2);
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if (count($host_key_arr) == 2) {
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$hosts[] = $host_key_arr[0];
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$keys[] = $host_key_arr[1];
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}
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}
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return array_combine($hosts, $keys);
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}
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}
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} catch (Exception $e) {
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}
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return array();
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}
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public function mkdir($path) {
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try {
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return $this->client->mkdir($this->abs_path($path));
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} catch (Exception $e) {
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return false;
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}
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}
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public function rmdir($path) {
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try {
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return $this->client->delete($this->abs_path($path), true);
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} catch (Exception $e) {
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return false;
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}
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public function opendir($path) {
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try {
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$list = $this->client->nlist($this->abs_path($path));
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$id = md5('sftp:' . $path);
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OC_FakeDirStream::$dirs[$id] = array();
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foreach($list as $file) {
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if ($file != '.' && $file != '..') {
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OC_FakeDirStream::$dirs[$id][] = $file;
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}
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}
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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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try {
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$stat = $this->client->stat($this->abs_path($path));
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if ($stat['type'] == NET_SFTP_TYPE_REGULAR) return 'file';
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if ($stat['type'] == NET_SFTP_TYPE_DIRECTORY) return 'dir';
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} catch (Exeption $e) {
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}
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return false;
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}
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public function isReadable($path) {
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return true;
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}
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public function isUpdatable($path) {
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return true;
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}
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public function file_exists($path) {
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try {
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return $this->client->stat($this->abs_path($path)) === false ? false : true;
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} catch (Exception $e) {
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return false;
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}
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}
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public function unlink($path) {
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try {
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return $this->client->delete($this->abs_path($path), true);
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} catch (Exception $e) {
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return false;
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}
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}
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public function fopen($path, $mode) {
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try {
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$abs_path = $this->abs_path($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($path)) return false;
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if (strrpos($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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$tmp = OC_Helper::tmpFile($ext);
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$this->getFile($abs_path, $tmp);
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return fopen($tmp, $mode);
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case 'w':
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case 'wb':
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case 'a':
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case 'ab':
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case 'r+':
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case 'w+':
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case 'wb+':
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case 'a+':
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case 'x':
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case 'x+':
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case 'c':
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case 'c+':
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if (strrpos($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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$tmpFile=OC_Helper::tmpFile($ext);
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OC_CloseStreamWrapper::$callBacks[$tmpFile]=array($this, 'writeBack');
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if ($this->file_exists($path)) {
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$this->getFile($abs_path, $tmpFile);
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}
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self::$tempFiles[$tmpFile]=$abs_path;
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return fopen('close://'.$tmpFile, $mode);
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}
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} catch (Exception $e) {
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}
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return false;
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}
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public function writeBack($tmpFile) {
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if (array_key_exists($tmpFile, self::$tempFiles)) {
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$this->uploadFile($tmpFile, self::$tempFiles[$tmpFile]);
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unlink($tmpFile);
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unset(self::$tempFiles[$tmpFile]);
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}
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}
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public function free_space($path) {
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return -1;
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}
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public function touch($path, $mtime=null) {
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try {
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if (!$this->file_exists($path)) {
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$this->client->put($this->abs_path($path), '');
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}
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} catch (Exception $e) {
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}
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}
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public function getFile($path, $target) {
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$this->client->get($path, $target);
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}
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public function uploadFile($path, $target) {
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$this->client->put($target, $path, NET_SFTP_LOCAL_FILE);
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}
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public function rename($source, $target) {
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try {
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return $this->client->rename($this->abs_path($source), $this->abs_path($target));
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} catch (Exception $e) {
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return false;
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}
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public function stat($path) {
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try {
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$stat = $this->client->stat($this->abs_path($path));
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$mtime = $stat ? $stat['mtime'] : -1;
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$size = $stat ? $stat['size'] : 0;
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return array('mtime' => $mtime, 'size' => $size, 'ctime' => -1);
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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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?>
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