6 files changed, 153 insertions, 61 deletions
diff --git a/phpBB/config/services.yml b/phpBB/config/services.yml
index 975f2f7580..8667cbbf84 100644
--- a/phpBB/config/services.yml
+++ b/phpBB/config/services.yml
@@ -109,6 +109,9 @@ services:
     filesystem:
         class: phpbb\filesystem
 
+    file_downloader:
+        class: phpbb\file_downloader
+
     http_kernel:
         class: Symfony\Component\HttpKernel\HttpKernel
         arguments:
@@ -181,4 +184,5 @@ services:
         arguments:
             - @cache
             - @config
+            - @file_downloader
             - @user
diff --git a/phpBB/includes/functions_admin.php b/phpBB/includes/functions_admin.php
index 5ddaf31cf5..0b9ea23fe7 100644
--- a/phpBB/includes/functions_admin.php
+++ b/phpBB/includes/functions_admin.php
@@ -2982,68 +2982,21 @@ function get_database_size()
 
 /**
 * Retrieve contents from remotely stored file
+*
+* @deprecated	3.1.2	Use file_downloader instead
 */
 function get_remote_file($host, $directory, $filename, &$errstr, &$errno, $port = 80, $timeout = 6)
 {
-	global $user;
-
-	if ($fsock = @fsockopen($host, $port, $errno, $errstr, $timeout))
-	{
-		@fputs($fsock, "GET $directory/$filename HTTP/1.0\r\n");
-		@fputs($fsock, "HOST: $host\r\n");
-		@fputs($fsock, "Connection: close\r\n\r\n");
+	global $phpbb_container;
 
-		$timer_stop = time() + $timeout;
-		stream_set_timeout($fsock, $timeout);
-
-		$file_info = '';
-		$get_info = false;
-
-		while (!@feof($fsock))
-		{
-			if ($get_info)
-			{
-				$file_info .= @fread($fsock, 1024);
-			}
-			else
-			{
-				$line = @fgets($fsock, 1024);
-				if ($line == "\r\n")
-				{
-					$get_info = true;
-				}
-				else if (stripos($line, '404 not found') !== false)
-				{
-					$errstr = $user->lang('FILE_NOT_FOUND', $filename);
-					return false;
-				}
-			}
+	// Get file downloader and assign $errstr and $errno
+	$file_downloader = $phpbb_container->get('file_downloader');
 
-			$stream_meta_data = stream_get_meta_data($fsock);
-
-			if (!empty($stream_meta_data['timed_out']) || time() >= $timer_stop)
-			{
-				$errstr = $user->lang['FSOCK_TIMEOUT'];
-				return false;
-			}
-		}
-		@fclose($fsock);
-	}
-	else
-	{
-		if ($errstr)
-		{
-			$errstr = utf8_convert_message($errstr);
-			return false;
-		}
-		else
-		{
-			$errstr = $user->lang['FSOCK_DISABLED'];
-			return false;
-		}
-	}
+	$file_data = $file_downloader->get($host, $directory, $filename, $port, $timeout);
+	$errstr = $file_downloader->get_error_string();
+	$errno = $file_downloader->get_error_number();
 
-	return $file_info;
+	return $file_data;
 }
 
 /*
diff --git a/phpBB/phpbb/file_downloader.php b/phpBB/phpbb/file_downloader.php
new file mode 100644
index 0000000000..d717b394d5
--- /dev/null
+++ b/phpBB/phpbb/file_downloader.php
@@ -0,0 +1,120 @@
+<?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		$timeout		Connection timeout in seconds; default: 6
+	 *
+	 * @return mixed File data as string if file can be read and there is no
+	 *			timeout, false if there were errors or the connection timed out
+	 *
+	 * @throws \RuntimeException If data can't be retrieved and no error
+	 *		message is returned
+	 */
+	public function get($host, $directory, $filename, $port = 80, $timeout = 6)
+	{
+		// Set default values for error variables
+		$this->error_number = 0;
+		$this->error_string = '';
+
+		if ($socket = @fsockopen($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 \RuntimeException(array('FILE_NOT_FOUND', $filename));
+					}
+				}
+
+				$stream_meta_data = stream_get_meta_data($socket);
+
+				if (!empty($stream_meta_data['timed_out']) || time() >= $timer_stop)
+				{
+					throw new \RuntimeException('FSOCK_TIMEOUT');
+				}
+			}
+			@fclose($socket);
+		}
+		else
+		{
+			if ($this->error_string)
+			{
+				$this->error_string = utf8_convert_message($this->error_string);
+				return false;
+			}
+			else
+			{
+				throw new \RuntimeException('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;
+	}
+}
diff --git a/phpBB/phpbb/version_helper.php b/phpBB/phpbb/version_helper.php
index bcc67712e4..8c106cf758 100644
--- a/phpBB/phpbb/version_helper.php
+++ b/phpBB/phpbb/version_helper.php
@@ -50,6 +50,9 @@ class version_helper
 	/** @var \phpbb\config\config */
 	protected $config;
 
+	/** @var \phpbb\file_downloader */
+	protected $file_downloader;
+
 	/** @var \phpbb\user */
 	protected $user;
 
@@ -58,12 +61,14 @@ class version_helper
 	 *
 	 * @param \phpbb\cache\service $cache
 	 * @param \phpbb\config\config $config
+	 * @param \phpbb\file_downloader $file_downloader
 	 * @param \phpbb\user $user
 	 */
-	public function __construct(\phpbb\cache\service $cache, \phpbb\config\config $config, \phpbb\user $user)
+	public function __construct(\phpbb\cache\service $cache, \phpbb\config\config $config, file_downloader $file_downloader, \phpbb\user $user)
 	{
 		$this->cache = $cache;
 		$this->config = $config;
+		$this->file_downloader = $file_downloader;
 		$this->user = $user;
 
 		if (defined('PHPBB_QA'))
@@ -249,12 +254,18 @@ class version_helper
 		}
 		else if ($info === false || $force_update)
 		{
-			$errstr = $errno = '';
-			$info = get_remote_file($this->host, $this->path, $this->file, $errstr, $errno);
+			try {
+				$info = $this->file_downloader->get($this->host, $this->path, $this->file);
+			}
+			catch (\RuntimeException $exception)
+			{
+				throw new \RuntimeException(call_user_func_array(array($this->user, 'lang'), $exception->getMessage()));
+			}
+			$error_string = $this->file_downloader->get_error_string();
 
-			if (!empty($errstr))
+			if (!empty($error_string))
 			{
-				throw new \RuntimeException($errstr);
+				throw new \RuntimeException($error_string);
 			}
 
 			$info = json_decode($info, true);
diff --git a/tests/version/version_fetch_test.php b/tests/version/version_fetch_test.php
index 05eac58a52..cfc87183cf 100644
--- a/tests/version/version_fetch_test.php
+++ b/tests/version/version_fetch_test.php
@@ -33,6 +33,7 @@ class phpbb_version_helper_fetch_test extends phpbb_test_case
 			new \phpbb\config\config(array(
 				'version'	=> '3.1.0',
 			)),
+			new \phpbb\file_downloader(),
 			new \phpbb\user('\phpbb\datetime')
 		);
 	}
diff --git a/tests/version/version_test.php b/tests/version/version_test.php
index ba31c79a79..528f1602d6 100644
--- a/tests/version/version_test.php
+++ b/tests/version/version_test.php
@@ -30,6 +30,7 @@ class phpbb_version_helper_test extends phpbb_test_case
 			new \phpbb\config\config(array(
 				'version'	=> '3.1.0',
 			)),
+			new \phpbb\file_downloader(),
 			new \phpbb\user('\phpbb\datetime')
 		);
 	}
@@ -208,6 +209,7 @@ class phpbb_version_helper_test extends phpbb_test_case
 				new \phpbb\config\config(array(
 					'version'	=> $current_version,
 				)),
+				new \phpbb\file_downloader(),
 				new \phpbb\user('\phpbb\datetime'),
 			))
 			->getMock()
@@ -318,6 +320,7 @@ class phpbb_version_helper_test extends phpbb_test_case
 				new \phpbb\config\config(array(
 					'version'	=> $current_version,
 				)),
+				new \phpbb\file_downloader(),
 				new \phpbb\user('\phpbb\datetime'),
 			))
 			->getMock()