3 files changed, 560 insertions, 0 deletions
diff --git a/phpBB/phpbb/install/module/requirements/module.php b/phpBB/phpbb/install/module/requirements/module.php
new file mode 100644
index 0000000000..d87ca15128
--- /dev/null
+++ b/phpBB/phpbb/install/module/requirements/module.php
@@ -0,0 +1,97 @@
+<?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;
+
+use phpbb\install\exception\user_interaction_required_exception;
+
+class module extends \phpbb\install\module_base
+{
+	public function run()
+	{
+		$tests_passed = true;
+
+		// Recover install progress
+		$task_index = 0;
+
+		// Run until there are available resources
+		while ($this->install_config->get_time_remaining() > 0 && $this->install_config->get_memory_remaining() > 0)
+		{
+			// Check if task exists
+			if (!isset($this->task_collection[$task_index]))
+			{
+				break;
+			}
+
+			// Recover task to be executed
+			try
+			{
+				/** @var \phpbb\install\task_interface $task */
+				$task = $this->container->get($this->task_collection[$task_index]);
+			}
+			catch (InvalidArgumentException $e)
+			{
+				throw new task_not_found_exception($this->task_collection[$task_index]);
+			}
+
+			// Iterate to the next task
+			$task_index++;
+
+			// Check if we can run the task
+			if (!$task->is_essential() && !$task->check_requirements())
+			{
+				continue;
+			}
+
+			$test_result = $task->run();
+			$tests_passed = ($tests_passed) ? $test_result : false;
+		}
+
+		// Check if tests have failed
+		if (!$tests_passed)
+		{
+			// If requirements are not met, exit form installer
+			// Set up UI for retesting
+			$this->iohandler->add_user_form_group('', array(
+				'install'	=> array(
+					'label'	=> 'RETEST_REQUIREMENTS',
+					'type'	=> 'submit',
+				),
+			));
+
+			// Send the response and quit
+			$this->iohandler->send_response();
+			throw new user_interaction_required_exception();
+		}
+
+		// Log install progress
+		$current_task_index = $task_index - 1;
+		$this->install_config->set_finished_task($this->task_collection[$current_task_index], $current_task_index);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_step_count()
+	{
+		return 0;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_navigation_stage_path()
+	{
+		return array('install', 0, 'requirements');
+	}
+}
diff --git a/phpBB/phpbb/install/module/requirements/task/check_filesystem.php b/phpBB/phpbb/install/module/requirements/task/check_filesystem.php
new file mode 100644
index 0000000000..5b944b8415
--- /dev/null
+++ b/phpBB/phpbb/install/module/requirements/task/check_filesystem.php
@@ -0,0 +1,273 @@
+<?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;
+
+/**
+ * Checks filesystem requirements
+ */
+class check_filesystem extends \phpbb\install\task_base
+{
+	/**
+	 * @var \phpbb\filesystem\filesystem_interface
+	 */
+	protected $filesystem;
+
+	/**
+	 * @var array
+	 */
+	protected $files_to_check;
+
+	/**
+	 * @var bool
+	 */
+	protected $tests_passed;
+
+	/**
+	 * @var string
+	 */
+	protected $phpbb_root_path;
+
+	/**
+	 * @var \phpbb\install\helper\iohandler\iohandler_interface
+	 */
+	protected $response;
+
+	/**
+	 * Constructor
+	 *
+	 * @param \phpbb\filesystem\filesystem_interface				$filesystem			filesystem handler
+	 * @parma \phpbb\install\helper\iohandler\iohandler_interface	$response			response helper
+	 * @param string												$phpbb_root_path	relative path to phpBB's root
+	 * @param string												$php_ext			extension of php files
+	 */
+	public function __construct(\phpbb\filesystem\filesystem_interface $filesystem,
+								\phpbb\install\helper\iohandler\iohandler_interface $response,
+								$phpbb_root_path,
+								$php_ext)
+	{
+		parent::__construct(true);
+
+		$this->filesystem		= $filesystem;
+		$this->response			= $response;
+		$this->phpbb_root_path	= $phpbb_root_path;
+
+		$this->tests_passed = false;
+
+		// Files/Directories to check
+		// All file/directory names must be relative to phpBB's root path
+		$this->files_to_check = array(
+			array(
+				'path' => 'cache/',
+				'failable' => false,
+				'is_file' => false,
+			),
+			array(
+				'path' => 'store/',
+				'failable' => false,
+				'is_file' => false,
+			),
+			array(
+				'path' => 'files/',
+				'failable' => false,
+				'is_file' => false,
+			),
+			array(
+				'path' => 'images/avatars/upload/',
+				'failable' => true,
+				'is_file' => false,
+			),
+			array(
+				'path' => "config.$php_ext",
+				'failable' => false,
+				'is_file' => true,
+			),
+		);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function run()
+	{
+		$this->tests_passed = true;
+
+		// Check files/directories to be writable
+		foreach ($this->files_to_check as $file)
+		{
+			if ($file['is_file'])
+			{
+				$this->check_file($file['path'], $file['failable']);
+			}
+			else
+			{
+				$this->check_dir($file['path'], $file['failable']);
+			}
+		}
+
+		return $this->tests_passed;
+	}
+
+	/**
+	 * 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) ? false : $is_passed;
+	}
+
+	/**
+	 * Check if a file is readable and writable
+	 *
+	 * @param string	$file		Filename
+	 * @param bool		$failable	Whether failing test should interrupt installation process
+	 */
+	protected function check_file($file, $failable = false)
+	{
+		$path = $this->phpbb_root_path . $file;
+		$exists = $writable = true;
+
+		// Try to create file if it does not exists
+		if (!file_exists($path))
+		{
+			$fp = @fopen($path, 'w');
+			@fclose($fp);
+			try
+			{
+				$this->filesystem->phpbb_chmod($path,
+					\phpbb\filesystem\filesystem_interface::CHMOD_READ | \phpbb\filesystem\filesystem_interface::CHMOD_WRITE
+				);
+				$exists = true;
+			}
+			catch (\phpbb\filesystem\exception\filesystem_exception $e)
+			{
+				// Do nothing
+			}
+		}
+
+		if (file_exists($path))
+		{
+			if (!$this->filesystem->is_writable($path))
+			{
+				$writable = false;
+			}
+		}
+		else
+		{
+			$exists = $writable = false;
+		}
+
+		$this->set_test_passed(($exists && $writable) || $failable);
+
+		if (!($exists && $writable))
+		{
+			$title = ($exists) ? 'FILE_NOT_WRITABLE' : 'FILE_NOT_EXISTS';
+			$description = array($title . '_EXPLAIN', $file);
+
+			if ($failable)
+			{
+				$this->response->add_warning_message($title, $description);
+			}
+			else
+			{
+				$this->response->add_error_message($title, $description);
+			}
+		}
+	}
+
+	/**
+	 * Check if a directory is readable and writable
+	 *
+	 * @param string	$dir		Filename
+	 * @param bool		$failable	Whether failing test should abort the installation process
+	 */
+	protected function check_dir($dir, $failable = false)
+	{
+		$path = $this->phpbb_root_path . $dir;
+		$exists = $writable = false;
+
+		// Try to create the directory if it does not exist
+		if (!file_exists($path))
+		{
+			try
+			{
+				$this->filesystem->mkdir($path, 0777);
+				$this->filesystem->phpbb_chmod($path,
+					\phpbb\filesystem\filesystem_interface::CHMOD_READ | \phpbb\filesystem\filesystem_interface::CHMOD_WRITE
+				);
+				$exists = true;
+			}
+			catch (\phpbb\filesystem\exception\filesystem_exception $e)
+			{
+				// Do nothing
+			}
+		}
+
+		// Now really check
+		if (file_exists($path) && is_dir($path))
+		{
+			try
+			{
+				$exists = true;
+				$this->filesystem->phpbb_chmod($path,
+					\phpbb\filesystem\filesystem_interface::CHMOD_READ | \phpbb\filesystem\filesystem_interface::CHMOD_WRITE
+				);
+			}
+			catch (\phpbb\filesystem\exception\filesystem_exception $e)
+			{
+				// Do nothing
+			}
+		}
+
+		if ($this->filesystem->is_writable($path))
+		{
+			$writable = true;
+		}
+
+		$this->set_test_passed(($exists && $writable) || $failable);
+
+		if (!($exists && $writable))
+		{
+			$title = ($exists) ? 'DIRECTORY_NOT_WRITABLE' : 'DIRECTORY_NOT_EXISTS';
+			$description = array($title . '_EXPLAIN', $dir);
+
+			if ($failable)
+			{
+				$this->response->add_warning_message($title, $description);
+			}
+			else
+			{
+				$this->response->add_error_message($title, $description);
+			}
+		}
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	static public function get_step_count()
+	{
+		return 0;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_task_lang_name()
+	{
+		return '';
+	}
+}
diff --git a/phpBB/phpbb/install/module/requirements/task/check_server_environment.php b/phpBB/phpbb/install/module/requirements/task/check_server_environment.php
new file mode 100644
index 0000000000..50efdc55a2
--- /dev/null
+++ b/phpBB/phpbb/install/module/requirements/task/check_server_environment.php
@@ -0,0 +1,190 @@
+<?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;
+
+/**
+ * Installer task that checks if the server meats phpBB requirements
+ */
+class check_server_environment extends \phpbb\install\task_base
+{
+	/**
+	 * @var \phpbb\install\helper\database
+	 */
+	protected $database_helper;
+
+	/**
+	 * @var \phpbb\install\helper\iohandler\iohandler_interface
+	 */
+	protected $response_helper;
+
+	/**
+	 * @var bool
+	 */
+	protected $tests_passed;
+
+	/**
+	 * Constructor
+	 *
+	 * @param	\phpbb\install\helper\database	$database_helper
+	 * @param	\phpbb\install\helper\iohandler\iohandler_interface	$response
+	 */
+	public function __construct(\phpbb\install\helper\database $database_helper,
+								\phpbb\install\helper\iohandler\iohandler_interface $response)
+	{
+		$this->database_helper	= $database_helper;
+		$this->response_helper	= $response;
+		$this->tests_passed		= true;
+
+		parent::__construct(true);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function run()
+	{
+		//
+		// Check requirements
+		// The error messages should be set in the check_ functions
+		//
+
+		// Check PHP version
+		$this->check_php_version();
+
+		// Check for getimagesize()
+		$this->check_image_size();
+
+		// Check for PCRE support
+		$this->check_pcre();
+
+		// Check for JSON support
+		$this->check_json();
+
+		// Check for dbms support
+		$this->check_available_dbms();
+
+		return $this->tests_passed;
+	}
+
+	/**
+	 * 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) ? false : $is_passed;
+	}
+
+	/**
+	 * Check if the requirements for PHP version is met
+	 */
+	protected function check_php_version()
+	{
+		$php_version = PHP_VERSION;
+
+		if (version_compare($php_version, '5.3.9') < 0)
+		{
+			$this->response_helper->add_error_message('PHP_VERSION_REQD', 'PHP_VERSION_REQD_EXPLAIN');
+
+			$this->set_test_passed(false);
+			return;
+		}
+
+		$this->set_test_passed(true);
+	}
+
+	/**
+	 * Checks if the installed PHP has getimagesize() available
+	 */
+	protected function check_image_size()
+	{
+		if (!@function_exists('getimagesize'))
+		{
+			$this->response_helper->add_error_message('PHP_GETIMAGESIZE_SUPPORT', 'PHP_GETIMAGESIZE_SUPPORT_EXPLAIN');
+
+			$this->set_test_passed(false);
+			return;
+		}
+
+		$this->set_test_passed(true);
+	}
+
+	/**
+	 * Checks if the installed PHP supports PCRE
+	 */
+	protected function check_pcre()
+	{
+		if (@preg_match('//u', ''))
+		{
+			$this->set_test_passed(true);
+			return;
+		}
+
+		$this->response_helper->add_error_message('PCRE_UTF_SUPPORT', 'PCRE_UTF_SUPPORT_EXPLAIN');
+
+		$this->set_test_passed(false);
+	}
+
+	/**
+	 * Checks whether PHP's JSON extension is available or not
+	 */
+	protected function check_json()
+	{
+		if (@extension_loaded('json'))
+		{
+			$this->set_test_passed(true);
+			return;
+		}
+
+		$this->response_helper->add_error_message('PHP_JSON_SUPPORT', 'PHP_JSON_SUPPORT_EXPLAIN');
+
+		$this->set_test_passed(false);
+	}
+
+	/**
+	 * Check if any supported DBMS is available
+	 */
+	protected function check_available_dbms()
+	{
+		$available_dbms = $this->database_helper->get_available_dbms(false, true);
+
+		if ($available_dbms['ANY_DB_SUPPORT'])
+		{
+			$this->set_test_passed(true);
+			return;
+		}
+
+		$this->response_helper->add_error_message('PHP_SUPPORTED_DB', 'PHP_SUPPORTED_DB_EXPLAIN');
+
+		$this->set_test_passed(false);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	static public function get_step_count()
+	{
+		return 0;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_task_lang_name()
+	{
+		return '';
+	}
+}