<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb;
class file_downloader
{
/** @var string Error string */
protected $error_string = '';
/** @var int Error number */
protected $error_number = 0;
/**
* Retrieve contents from remotely stored file
*
* @param string $host File host
* @param string $directory Directory file is in
* @param string $filename Filename of file to retrieve
* @param int $port Port to connect to; default: 80
* @param int $timeout Connection timeout in seconds; default: 6
*
* @return mixed File data as string if file can be read and there is no
* timeout, false if there were errors or the connection timed out
*
* @throws \phpbb\exception\runtime_exception If data can't be retrieved and no error
* message is returned
*/
public function get($host, $directory, $filename, $port = 80, $timeout = 6)
{
// Set default values for error variables
$this->error_number = 0;
$this->error_string = '';
if (function_exists('fsockopen') &&
$socket = @fsockopen(($port == 443 ? 'ssl://' : '') . $host, $port, $this->error_number, $this->error_string, $timeout)
)
{
@fputs($socket, "GET $directory/$filename HTTP/1.0\r\n");
@fputs($socket, "HOST: $host\r\n");
@fputs($socket, "Connection: close\r\n\r\n");
$timer_stop = time() + $timeout;
stream_set_timeout($socket, $timeout);
$file_info = '';
$get_info = false;
while (!@feof($socket))
{
if ($get_info)
{
$file_info .= @fread($socket, 1024);
}
else
{
$line = @fgets($socket, 1024);
if ($line == "\r\n")
{
$get_info = true;
}
else if (stripos($line, '404 not found') !== false)
{
throw new \phpbb\exception\runtime_exception('FILE_NOT_FOUND', array($filename));
}
}
$stream_meta_data = stream_get_meta_data($socket);
if (!empty($stream_meta_data['timed_out']) || time() >= $timer_stop)
{
throw new \phpbb\exception\runtime_exception('FSOCK_TIMEOUT');
}
}
@fclose($socket);
}
else
{
if ($this->error_string)
{
$this->error_string = utf8_convert_message($this->error_string);
return false;
}
else
{
throw new \phpbb\exception\runtime_exception('FSOCK_DISABLED');
}
}
return $file_info;
}
/**
* Get error string
*
* @return string Error string
*/
public function get_error_string()
{
return $this->error_string;
}
/**
* Get error number
*
* @return int Error number
*/
public function get_error_number()
{
return $this->error_number;
}
}