mirror of
https://github.com/YunoHost-Apps/phpbb_ynh.git
synced 2024-09-03 19:56:36 +02:00
903 lines
18 KiB
PHP
903 lines
18 KiB
PHP
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<?php
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/**
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*
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* This file is part of the phpBB Forum Software package.
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*
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* @copyright (c) phpBB Limited <https://www.phpbb.com>
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* @license GNU General Public License, version 2 (GPL-2.0)
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*
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* For full copyright and license information, please see
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* the docs/CREDITS.txt file.
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*
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*/
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/**
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* @ignore
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*/
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if (!defined('IN_PHPBB'))
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{
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exit;
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}
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/**
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* Transfer class, wrapper for ftp/sftp/ssh
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*/
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class transfer
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{
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var $connection;
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var $host;
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var $port;
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var $username;
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var $password;
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var $timeout;
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var $root_path;
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var $tmp_path;
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var $file_perms;
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var $dir_perms;
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/**
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* Constructor - init some basic values
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*/
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function transfer()
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{
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global $phpbb_root_path;
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$this->file_perms = 0644;
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$this->dir_perms = 0777;
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// We use the store directory as temporary path to circumvent open basedir restrictions
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$this->tmp_path = $phpbb_root_path . 'store/';
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}
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/**
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* Write file to location
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*/
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function write_file($destination_file = '', $contents = '')
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{
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global $phpbb_root_path;
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$destination_file = $this->root_path . str_replace($phpbb_root_path, '', $destination_file);
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// need to create a temp file and then move that temp file.
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// ftp functions can only move files around and can't create.
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// This means that the users will need to have access to write
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// temporary files or have write access on a folder within phpBB
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// like the cache folder. If the user can't do either, then
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// he/she needs to use the fsock ftp method
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$temp_name = tempnam($this->tmp_path, 'transfer_');
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@unlink($temp_name);
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$fp = @fopen($temp_name, 'w');
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if (!$fp)
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{
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trigger_error('Unable to create temporary file ' . $temp_name, E_USER_ERROR);
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}
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@fwrite($fp, $contents);
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@fclose($fp);
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$result = $this->overwrite_file($temp_name, $destination_file);
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// remove temporary file now
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@unlink($temp_name);
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return $result;
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}
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/**
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* Moving file into location. If the destination file already exists it gets overwritten
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*/
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function overwrite_file($source_file, $destination_file)
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{
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/**
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* @todo generally think about overwriting files in another way, by creating a temporary file and then renaming it
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* @todo check for the destination file existance too
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*/
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$this->_delete($destination_file);
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$result = $this->_put($source_file, $destination_file);
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$this->_chmod($destination_file, $this->file_perms);
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return $result;
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}
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/**
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* Create directory structure
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*/
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function make_dir($dir)
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{
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global $phpbb_root_path;
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$dir = str_replace($phpbb_root_path, '', $dir);
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$dir = explode('/', $dir);
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$dirs = '';
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for ($i = 0, $total = sizeof($dir); $i < $total; $i++)
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{
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$result = true;
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if (strpos($dir[$i], '.') === 0)
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{
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continue;
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}
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$cur_dir = $dir[$i] . '/';
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if (!file_exists($phpbb_root_path . $dirs . $cur_dir))
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{
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// create the directory
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$result = $this->_mkdir($dir[$i]);
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$this->_chmod($dir[$i], $this->dir_perms);
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}
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$this->_chdir($this->root_path . $dirs . $dir[$i]);
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$dirs .= $cur_dir;
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}
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$this->_chdir($this->root_path);
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/**
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* @todo stack result into array to make sure every path creation has been taken care of
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*/
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return $result;
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}
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/**
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* Copy file from source location to destination location
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*/
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function copy_file($from_loc, $to_loc)
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{
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global $phpbb_root_path;
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$from_loc = ((strpos($from_loc, $phpbb_root_path) !== 0) ? $phpbb_root_path : '') . $from_loc;
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$to_loc = $this->root_path . str_replace($phpbb_root_path, '', $to_loc);
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if (!file_exists($from_loc))
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{
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return false;
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}
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$result = $this->overwrite_file($from_loc, $to_loc);
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return $result;
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}
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/**
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* Remove file
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*/
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function delete_file($file)
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{
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global $phpbb_root_path;
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$file = $this->root_path . str_replace($phpbb_root_path, '', $file);
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return $this->_delete($file);
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}
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/**
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* Remove directory
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* @todo remove child directories?
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*/
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function remove_dir($dir)
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{
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global $phpbb_root_path;
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$dir = $this->root_path . str_replace($phpbb_root_path, '', $dir);
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return $this->_rmdir($dir);
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}
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/**
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* Rename a file or folder
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*/
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function rename($old_handle, $new_handle)
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{
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global $phpbb_root_path;
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$old_handle = $this->root_path . str_replace($phpbb_root_path, '', $old_handle);
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return $this->_rename($old_handle, $new_handle);
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}
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/**
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* Check if a specified file exist...
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*/
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function file_exists($directory, $filename)
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{
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global $phpbb_root_path;
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$directory = $this->root_path . str_replace($phpbb_root_path, '', $directory);
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$this->_chdir($directory);
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$result = $this->_ls();
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if ($result !== false && is_array($result))
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{
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return (in_array($filename, $result)) ? true : false;
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}
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return false;
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}
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/**
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* Open session
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*/
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function open_session()
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{
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return $this->_init();
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}
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/**
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* Close current session
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*/
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function close_session()
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{
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return $this->_close();
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}
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/**
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* Determine methods able to be used
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*/
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static public function methods()
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{
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$methods = array();
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$disabled_functions = explode(',', @ini_get('disable_functions'));
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if (@extension_loaded('ftp'))
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{
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$methods[] = 'ftp';
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}
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if (!in_array('fsockopen', $disabled_functions))
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{
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$methods[] = 'ftp_fsock';
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}
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return $methods;
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}
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}
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/**
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* FTP transfer class
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*/
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class ftp extends transfer
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{
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/**
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* Standard parameters for FTP session
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*/
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function ftp($host, $username, $password, $root_path, $port = 21, $timeout = 10)
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{
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$this->host = $host;
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$this->port = $port;
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$this->username = $username;
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$this->password = $password;
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$this->timeout = $timeout;
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// Make sure $this->root_path is layed out the same way as the $user->page['root_script_path'] value (/ at the end)
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$this->root_path = str_replace('\\', '/', $this->root_path);
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if (!empty($root_path))
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{
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$this->root_path = (($root_path[0] != '/' ) ? '/' : '') . $root_path . ((substr($root_path, -1, 1) == '/') ? '' : '/');
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}
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// Init some needed values
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$this->transfer();
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return;
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}
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/**
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* Requests data
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*/
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static public function data()
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{
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global $user;
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return array(
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'host' => 'localhost',
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'username' => 'anonymous',
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'password' => '',
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'root_path' => $user->page['root_script_path'],
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'port' => 21,
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'timeout' => 10
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);
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}
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/**
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* Init FTP Session
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* @access private
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*/
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function _init()
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{
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// connect to the server
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$this->connection = @ftp_connect($this->host, $this->port, $this->timeout);
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if (!$this->connection)
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{
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return 'ERR_CONNECTING_SERVER';
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}
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// login to the server
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if (!@ftp_login($this->connection, $this->username, $this->password))
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{
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return 'ERR_UNABLE_TO_LOGIN';
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}
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// attempt to turn pasv mode on
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@ftp_pasv($this->connection, true);
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// change to the root directory
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if (!$this->_chdir($this->root_path))
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{
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return 'ERR_CHANGING_DIRECTORY';
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}
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return true;
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}
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/**
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* Create Directory (MKDIR)
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* @access private
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*/
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function _mkdir($dir)
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{
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return @ftp_mkdir($this->connection, $dir);
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}
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/**
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* Remove directory (RMDIR)
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* @access private
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*/
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function _rmdir($dir)
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{
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return @ftp_rmdir($this->connection, $dir);
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}
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/**
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* Rename file
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* @access private
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*/
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function _rename($old_handle, $new_handle)
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{
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return @ftp_rename($this->connection, $old_handle, $new_handle);
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}
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/**
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* Change current working directory (CHDIR)
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* @access private
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*/
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function _chdir($dir = '')
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{
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if ($dir && $dir !== '/')
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{
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if (substr($dir, -1, 1) == '/')
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{
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$dir = substr($dir, 0, -1);
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}
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}
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return @ftp_chdir($this->connection, $dir);
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}
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/**
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* change file permissions (CHMOD)
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* @access private
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*/
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function _chmod($file, $perms)
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{
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if (function_exists('ftp_chmod'))
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{
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$err = @ftp_chmod($this->connection, $perms, $file);
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}
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else
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{
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// Unfortunatly CHMOD is not expecting an octal value...
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// We need to transform the integer (which was an octal) to an octal representation (to get the int) and then pass as is. ;)
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$chmod_cmd = 'CHMOD ' . base_convert($perms, 10, 8) . ' ' . $file;
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$err = $this->_site($chmod_cmd);
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}
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return $err;
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}
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/**
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* Upload file to location (PUT)
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* @access private
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*/
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function _put($from_file, $to_file)
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{
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// get the file extension
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$file_extension = strtolower(substr(strrchr($to_file, '.'), 1));
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// We only use the BINARY file mode to cicumvent rewrite actions from ftp server (mostly linefeeds being replaced)
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$mode = FTP_BINARY;
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$to_dir = dirname($to_file);
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$to_file = basename($to_file);
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$this->_chdir($to_dir);
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$result = @ftp_put($this->connection, $to_file, $from_file, $mode);
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$this->_chdir($this->root_path);
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return $result;
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}
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/**
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* Delete file (DELETE)
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* @access private
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*/
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function _delete($file)
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{
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return @ftp_delete($this->connection, $file);
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}
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/**
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* Close ftp session (CLOSE)
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* @access private
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*/
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function _close()
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{
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if (!$this->connection)
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{
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return false;
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}
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return @ftp_quit($this->connection);
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}
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/**
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* Return current working directory (CWD)
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* At the moment not used by parent class
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* @access private
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*/
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function _cwd()
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{
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return @ftp_pwd($this->connection);
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}
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/**
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* Return list of files in a given directory (LS)
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* @access private
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*/
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function _ls($dir = './')
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{
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$list = @ftp_nlist($this->connection, $dir);
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// See bug #46295 - Some FTP daemons don't like './'
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if ($dir === './')
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{
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// Let's try some alternatives
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$list = (empty($list)) ? @ftp_nlist($this->connection, '.') : $list;
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$list = (empty($list)) ? @ftp_nlist($this->connection, '') : $list;
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}
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// Return on error
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if ($list === false)
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{
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return false;
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}
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// Remove path if prepended
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foreach ($list as $key => $item)
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{
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// Use same separator for item and dir
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$item = str_replace('\\', '/', $item);
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$dir = str_replace('\\', '/', $dir);
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if (!empty($dir) && strpos($item, $dir) === 0)
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{
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$item = substr($item, strlen($dir));
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}
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$list[$key] = $item;
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}
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return $list;
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}
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/**
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* FTP SITE command (ftp-only function)
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* @access private
|
||
|
*/
|
||
|
function _site($command)
|
||
|
{
|
||
|
return @ftp_site($this->connection, $command);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* FTP fsock transfer class
|
||
|
*/
|
||
|
class ftp_fsock extends transfer
|
||
|
{
|
||
|
var $data_connection;
|
||
|
|
||
|
/**
|
||
|
* Standard parameters for FTP session
|
||
|
*/
|
||
|
function ftp_fsock($host, $username, $password, $root_path, $port = 21, $timeout = 10)
|
||
|
{
|
||
|
$this->host = $host;
|
||
|
$this->port = $port;
|
||
|
$this->username = $username;
|
||
|
$this->password = $password;
|
||
|
$this->timeout = $timeout;
|
||
|
|
||
|
// Make sure $this->root_path is layed out the same way as the $user->page['root_script_path'] value (/ at the end)
|
||
|
$this->root_path = str_replace('\\', '/', $this->root_path);
|
||
|
|
||
|
if (!empty($root_path))
|
||
|
{
|
||
|
$this->root_path = (($root_path[0] != '/' ) ? '/' : '') . $root_path . ((substr($root_path, -1, 1) == '/') ? '' : '/');
|
||
|
}
|
||
|
|
||
|
// Init some needed values
|
||
|
$this->transfer();
|
||
|
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Requests data
|
||
|
*/
|
||
|
static public function data()
|
||
|
{
|
||
|
global $user;
|
||
|
|
||
|
return array(
|
||
|
'host' => 'localhost',
|
||
|
'username' => 'anonymous',
|
||
|
'password' => '',
|
||
|
'root_path' => $user->page['root_script_path'],
|
||
|
'port' => 21,
|
||
|
'timeout' => 10
|
||
|
);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Init FTP Session
|
||
|
* @access private
|
||
|
*/
|
||
|
function _init()
|
||
|
{
|
||
|
$errno = 0;
|
||
|
$errstr = '';
|
||
|
|
||
|
// connect to the server
|
||
|
$this->connection = @fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout);
|
||
|
|
||
|
if (!$this->connection || !$this->_check_command())
|
||
|
{
|
||
|
return 'ERR_CONNECTING_SERVER';
|
||
|
}
|
||
|
|
||
|
@stream_set_timeout($this->connection, $this->timeout);
|
||
|
|
||
|
// login
|
||
|
if (!$this->_send_command('USER', $this->username))
|
||
|
{
|
||
|
return 'ERR_UNABLE_TO_LOGIN';
|
||
|
}
|
||
|
|
||
|
if (!$this->_send_command('PASS', $this->password))
|
||
|
{
|
||
|
return 'ERR_UNABLE_TO_LOGIN';
|
||
|
}
|
||
|
|
||
|
// change to the root directory
|
||
|
if (!$this->_chdir($this->root_path))
|
||
|
{
|
||
|
return 'ERR_CHANGING_DIRECTORY';
|
||
|
}
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Create Directory (MKDIR)
|
||
|
* @access private
|
||
|
*/
|
||
|
function _mkdir($dir)
|
||
|
{
|
||
|
return $this->_send_command('MKD', $dir);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Remove directory (RMDIR)
|
||
|
* @access private
|
||
|
*/
|
||
|
function _rmdir($dir)
|
||
|
{
|
||
|
return $this->_send_command('RMD', $dir);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Rename File
|
||
|
* @access private
|
||
|
*/
|
||
|
function _rename($old_handle, $new_handle)
|
||
|
{
|
||
|
$this->_send_command('RNFR', $old_handle);
|
||
|
return $this->_send_command('RNTO', $new_handle);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Change current working directory (CHDIR)
|
||
|
* @access private
|
||
|
*/
|
||
|
function _chdir($dir = '')
|
||
|
{
|
||
|
if ($dir && $dir !== '/')
|
||
|
{
|
||
|
if (substr($dir, -1, 1) == '/')
|
||
|
{
|
||
|
$dir = substr($dir, 0, -1);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return $this->_send_command('CWD', $dir);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* change file permissions (CHMOD)
|
||
|
* @access private
|
||
|
*/
|
||
|
function _chmod($file, $perms)
|
||
|
{
|
||
|
// Unfortunatly CHMOD is not expecting an octal value...
|
||
|
// We need to transform the integer (which was an octal) to an octal representation (to get the int) and then pass as is. ;)
|
||
|
return $this->_send_command('SITE CHMOD', base_convert($perms, 10, 8) . ' ' . $file);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Upload file to location (PUT)
|
||
|
* @access private
|
||
|
*/
|
||
|
function _put($from_file, $to_file)
|
||
|
{
|
||
|
// We only use the BINARY file mode to cicumvent rewrite actions from ftp server (mostly linefeeds being replaced)
|
||
|
// 'I' == BINARY
|
||
|
// 'A' == ASCII
|
||
|
if (!$this->_send_command('TYPE', 'I'))
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
// open the connection to send file over
|
||
|
if (!$this->_open_data_connection())
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
$this->_send_command('STOR', $to_file, false);
|
||
|
|
||
|
// send the file
|
||
|
$fp = @fopen($from_file, 'rb');
|
||
|
while (!@feof($fp))
|
||
|
{
|
||
|
@fwrite($this->data_connection, @fread($fp, 4096));
|
||
|
}
|
||
|
@fclose($fp);
|
||
|
|
||
|
// close connection
|
||
|
$this->_close_data_connection();
|
||
|
|
||
|
return $this->_check_command();
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Delete file (DELETE)
|
||
|
* @access private
|
||
|
*/
|
||
|
function _delete($file)
|
||
|
{
|
||
|
return $this->_send_command('DELE', $file);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Close ftp session (CLOSE)
|
||
|
* @access private
|
||
|
*/
|
||
|
function _close()
|
||
|
{
|
||
|
if (!$this->connection)
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
return $this->_send_command('QUIT');
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Return current working directory (CWD)
|
||
|
* At the moment not used by parent class
|
||
|
* @access private
|
||
|
*/
|
||
|
function _cwd()
|
||
|
{
|
||
|
$this->_send_command('PWD', '', false);
|
||
|
return preg_replace('#^[0-9]{3} "(.+)" .+\r\n#', '\\1', $this->_check_command(true));
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Return list of files in a given directory (LS)
|
||
|
* @access private
|
||
|
*/
|
||
|
function _ls($dir = './')
|
||
|
{
|
||
|
if (!$this->_open_data_connection())
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
$this->_send_command('NLST', $dir);
|
||
|
|
||
|
$list = array();
|
||
|
while (!@feof($this->data_connection))
|
||
|
{
|
||
|
$filename = preg_replace('#[\r\n]#', '', @fgets($this->data_connection, 512));
|
||
|
|
||
|
if ($filename !== '')
|
||
|
{
|
||
|
$list[] = $filename;
|
||
|
}
|
||
|
}
|
||
|
$this->_close_data_connection();
|
||
|
|
||
|
// Clear buffer
|
||
|
$this->_check_command();
|
||
|
|
||
|
// See bug #46295 - Some FTP daemons don't like './'
|
||
|
if ($dir === './' && empty($list))
|
||
|
{
|
||
|
// Let's try some alternatives
|
||
|
$list = $this->_ls('.');
|
||
|
|
||
|
if (empty($list))
|
||
|
{
|
||
|
$list = $this->_ls('');
|
||
|
}
|
||
|
|
||
|
return $list;
|
||
|
}
|
||
|
|
||
|
// Remove path if prepended
|
||
|
foreach ($list as $key => $item)
|
||
|
{
|
||
|
// Use same separator for item and dir
|
||
|
$item = str_replace('\\', '/', $item);
|
||
|
$dir = str_replace('\\', '/', $dir);
|
||
|
|
||
|
if (!empty($dir) && strpos($item, $dir) === 0)
|
||
|
{
|
||
|
$item = substr($item, strlen($dir));
|
||
|
}
|
||
|
|
||
|
$list[$key] = $item;
|
||
|
}
|
||
|
|
||
|
return $list;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Send a command to server (FTP fsock only function)
|
||
|
* @access private
|
||
|
*/
|
||
|
function _send_command($command, $args = '', $check = true)
|
||
|
{
|
||
|
if (!empty($args))
|
||
|
{
|
||
|
$command = "$command $args";
|
||
|
}
|
||
|
|
||
|
fwrite($this->connection, $command . "\r\n");
|
||
|
|
||
|
if ($check === true && !$this->_check_command())
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Opens a connection to send data (FTP fosck only function)
|
||
|
* @access private
|
||
|
*/
|
||
|
function _open_data_connection()
|
||
|
{
|
||
|
// Try to find out whether we have a IPv4 or IPv6 (control) connection
|
||
|
if (function_exists('stream_socket_get_name'))
|
||
|
{
|
||
|
$socket_name = stream_socket_get_name($this->connection, true);
|
||
|
$server_ip = substr($socket_name, 0, strrpos($socket_name, ':'));
|
||
|
}
|
||
|
|
||
|
if (!isset($server_ip) || preg_match(get_preg_expression('ipv4'), $server_ip))
|
||
|
{
|
||
|
// Passive mode
|
||
|
$this->_send_command('PASV', '', false);
|
||
|
|
||
|
if (!$ip_port = $this->_check_command(true))
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
// open the connection to start sending the file
|
||
|
if (!preg_match('#[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+#', $ip_port, $temp))
|
||
|
{
|
||
|
// bad ip and port
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
$temp = explode(',', $temp[0]);
|
||
|
$server_ip = $temp[0] . '.' . $temp[1] . '.' . $temp[2] . '.' . $temp[3];
|
||
|
$server_port = $temp[4] * 256 + $temp[5];
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
// Extended Passive Mode - RFC2428
|
||
|
$this->_send_command('EPSV', '', false);
|
||
|
|
||
|
if (!$epsv_response = $this->_check_command(true))
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
// Response looks like "229 Entering Extended Passive Mode (|||12345|)"
|
||
|
// where 12345 is the tcp port for the data connection
|
||
|
if (!preg_match('#\(\|\|\|([0-9]+)\|\)#', $epsv_response, $match))
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
$server_port = (int) $match[1];
|
||
|
|
||
|
// fsockopen expects IPv6 address in square brackets
|
||
|
$server_ip = "[$server_ip]";
|
||
|
}
|
||
|
|
||
|
$errno = 0;
|
||
|
$errstr = '';
|
||
|
|
||
|
if (!$this->data_connection = @fsockopen($server_ip, $server_port, $errno, $errstr, $this->timeout))
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
@stream_set_timeout($this->data_connection, $this->timeout);
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Closes a connection used to send data
|
||
|
* @access private
|
||
|
*/
|
||
|
function _close_data_connection()
|
||
|
{
|
||
|
return @fclose($this->data_connection);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Check to make sure command was successful (FTP fsock only function)
|
||
|
* @access private
|
||
|
*/
|
||
|
function _check_command($return = false)
|
||
|
{
|
||
|
$response = '';
|
||
|
|
||
|
do
|
||
|
{
|
||
|
$result = @fgets($this->connection, 512);
|
||
|
$response .= $result;
|
||
|
}
|
||
|
while (substr($result, 3, 1) !== ' ');
|
||
|
|
||
|
if (!preg_match('#^[123]#', $response))
|
||
|
{
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
return ($return) ? $response : true;
|
||
|
}
|
||
|
}
|