1 files changed, 198 insertions, 0 deletions
diff --git a/phpBB/phpbb/install/module/requirements/task/check_update.php b/phpBB/phpbb/install/module/requirements/task/check_update.php
new file mode 100644
index 0000000000..4eb2c6d75e
--- /dev/null
+++ b/phpBB/phpbb/install/module/requirements/task/check_update.php
@@ -0,0 +1,198 @@
+<?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\install\module\requirements\task;
+
+use phpbb\filesystem\filesystem;
+use phpbb\install\helper\config;
+use phpbb\install\helper\container_factory;
+use phpbb\install\helper\iohandler\iohandler_interface;
+use phpbb\install\helper\update_helper;
+use phpbb\install\task_base;
+
+/**
+ * Check the availability of updater files and update version
+ */
+class check_update extends task_base
+{
+	/**
+	 * @var \phpbb\config\db
+	 */
+	protected $config;
+
+	/**
+	 * @var filesystem
+	 */
+	protected $filesystem;
+
+	/**
+	 * @var config
+	 */
+	protected $installer_config;
+
+	/**
+	 * @var iohandler_interface
+	 */
+	protected $iohandler;
+
+	/**
+	 * @var update_helper
+	 */
+	protected $update_helper;
+
+	/**
+	 * @var \phpbb\version_helper
+	 */
+	protected $version_helper;
+
+	/**
+	 * @var string
+	 */
+	protected $phpbb_root_path;
+
+	/**
+	 * @var string
+	 */
+	protected $php_ext;
+
+	/**
+	 * @var bool
+	 */
+	protected $tests_passed;
+
+	/**
+	 * Constructor
+	 *
+	 * @param container_factory		$container
+	 * @param filesystem			$filesystem
+	 * @param config				$config
+	 * @param iohandler_interface	$iohandler
+	 * @param update_helper			$update_helper
+	 * @param string				$phpbb_root_path
+	 * @param string				$php_ext
+	 */
+	public function __construct(container_factory $container, filesystem $filesystem, config $config, iohandler_interface $iohandler, update_helper $update_helper, $phpbb_root_path, $php_ext)
+	{
+		$this->filesystem		= $filesystem;
+		$this->installer_config	= $config;
+		$this->iohandler		= $iohandler;
+		$this->update_helper	= $update_helper;
+		$this->phpbb_root_path	= $phpbb_root_path;
+		$this->php_ext			= $php_ext;
+		$this->tests_passed		= true;
+
+		$this->config			= $container->get('config');
+		$this->version_helper	= $container->get('version_helper');
+
+		parent::__construct(true);
+	}
+
+	/**
+	 * Sets $this->tests_passed
+	 *
+	 * @param	bool	$is_passed
+	 */
+	protected function set_test_passed($is_passed)
+	{
+		// If one test failed, tests_passed should be false
+		$this->tests_passed = $this->tests_passed && $is_passed;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function run()
+	{
+		// Array of update files
+		$update_files = array(
+			$this->phpbb_root_path . 'install/update',
+			$this->phpbb_root_path . 'install/update/index.' . $this->php_ext,
+		);
+
+		// Check for a valid update directory
+		if (!$this->filesystem->exists($update_files) || !$this->filesystem->is_readable($update_files))
+		{
+			if ($this->iohandler->get_input('update_type', 'all') === 'all')
+			{
+				$this->iohandler->add_warning_message('UPDATE_FILES_NOT_FOUND');
+				$this->set_test_passed(false);
+			}
+
+			// If there are no update files, we can't check the version etc
+			// However, we can let the users run migrations if they really want to...
+			$this->installer_config->set('disable_filesystem_update', true);
+			return true;
+		}
+
+		// Recover version numbers
+		$update_info = array();
+		@include($this->phpbb_root_path . 'install/update/index.' . $this->php_ext);
+		$info = (empty($update_info) || !is_array($update_info)) ? false : $update_info;
+		$update_version = false;
+
+		if ($info !== false)
+		{
+			$update_version = (!empty($info['version']['to'])) ? trim($info['version']['to']) : false;
+		}
+
+		// Get current and latest version
+		try
+		{
+			$latest_version = $this->version_helper->get_latest_on_current_branch(true);
+		}
+		catch (\RuntimeException $e)
+		{
+			$latest_version = $update_version;
+		}
+
+		$current_version = (!empty($this->config['version_update_from'])) ? $this->config['version_update_from'] : $this->config['version'];
+
+		// Check if the update package
+		if (!$this->update_helper->phpbb_version_compare($current_version, $update_version, '<'))
+		{
+			$this->iohandler->add_error_message('NO_UPDATE_FILES_UP_TO_DATE');
+			$this->tests_passed = false;
+		}
+
+		// Check if the update package works with the installed version
+		if (empty($info['version']['from']) || $info['version']['from'] !== $current_version)
+		{
+			$this->iohandler->add_error_message(array('INCOMPATIBLE_UPDATE_FILES', $current_version, $info['version']['from'], $update_version));
+			$this->tests_passed = false;
+		}
+
+		// check if this is the latest update package
+		if ($this->update_helper->phpbb_version_compare($update_version, $latest_version, '<'))
+		{
+			$this->iohandler->add_warning_message(array('OLD_UPDATE_FILES', $info['version']['from'], $update_version, $latest_version));
+		}
+
+		return $this->tests_passed;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	static public function get_step_count()
+	{
+		return 0;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_task_lang_name()
+	{
+		return '';
+	}
+}