| <?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; $this->error_string = '';
if ($socket = @fsockopen(($port == 443 ? 'tls://' : '') . $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; } }
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