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msd2/phpBB3/phpbb/viewonline_helper.php

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+<?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 to handle viewonline related tasks
+*/
+class viewonline_helper
+{
+	/** @var \phpbb\filesystem\filesystem_interface */
+	protected $filesystem;
+
+	/**
+	* @param \phpbb\filesystem\filesystem_interface $filesystem	phpBB's filesystem service
+	*/
+	public function __construct(\phpbb\filesystem\filesystem_interface $filesystem)
+	{
+		$this->filesystem = $filesystem;
+	}
+
+	/**
+	* Get user page
+	*
+	* @param string $session_page User's session page
+	* @return array Match array filled by preg_match()
+	*/
+	public function get_user_page($session_page)
+	{
+		$session_page = $this->filesystem->clean_path($session_page);
+		if (strpos($session_page, './') === 0)
+		{
+			$session_page = substr($session_page, 2);
+		}
+
+		preg_match('#^((\.\./)*([a-z0-9/_-]+))#i', $session_page, $on_page);
+		if (empty($on_page))
+		{
+			$on_page[1] = '';
+		}
+
+		return $on_page;
+	}
+}