3 files changed, 134 insertions, 0 deletions
diff --git a/phpBB/includes/extension/controller.php b/phpBB/includes/extension/controller.php
new file mode 100644
index 0000000000..c7fd439a19
--- /dev/null
+++ b/phpBB/includes/extension/controller.php
@@ -0,0 +1,77 @@
+<?php
+/**
+*
+* @package extension
+* @copyright (c) 2011 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* Abstract class extended by extension front controller classes
+*
+* @package extension
+*/
+abstract class phpbb_extension_controller implements phpbb_extension_controller_interface
+{
+	/**
+	* @var phpbb_request Request class object
+	*/
+	protected $request;
+
+	/**
+	* @var dbal DBAL class object
+	*/
+	protected $db;
+
+	/**
+	* @var user User class object
+	*/
+	protected $user;
+
+	/**
+	* @var phpbb_template Template class object
+	*/
+	protected $template;
+
+	/**
+	* @var array Config array
+	*/
+	protected $config;
+
+	/**
+	* @var string PHP Extension
+	*/
+	protected $phpEx;
+
+	/**
+	* @var string Relative path to board root
+	*/
+	protected $phpbb_root_path;
+
+	/**
+	* Constructor method that provides the common phpBB objects as inherited class
+	* properties for automatic availability in extension controllers
+	*/
+	public function __construct()
+	{
+		global $request, $db, $user, $template, $config;
+		global $phpEx, $phpbb_root_path;
+
+		$this->request = $request;
+		$this->db = $db;
+		$this->user = $user;
+		$this->template = $template;
+		$this->config = $config;
+		$this->phpEx = $phpEx;
+		$this->phpbb_root_path = $phpbb_root_path;
+	}
+}
diff --git a/phpBB/includes/extension/controller_interface.php b/phpBB/includes/extension/controller_interface.php
new file mode 100644
index 0000000000..2b88925388
--- /dev/null
+++ b/phpBB/includes/extension/controller_interface.php
@@ -0,0 +1,31 @@
+<?php
+/**
+*
+* @package extension
+* @copyright (c) 2011 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* The interface that extension classes have to implement to run front pages
+*
+* @package extension
+*/
+interface phpbb_extension_controller_interface
+{
+	/**
+	* Handle the request to display a page from an extension
+	*
+	* @return	null
+	*/
+	public function handle();
+}
diff --git a/phpBB/includes/extension/manager.php b/phpBB/includes/extension/manager.php
index c38f0df32e..537c19aff8 100644
--- a/phpBB/includes/extension/manager.php
+++ b/phpBB/includes/extension/manager.php
@@ -352,6 +352,10 @@ class phpbb_extension_manager
 	public function all_available()
 	{
 		$available = array();
+		if (!is_dir($this->phpbb_root_path . 'ext/'))
+		{
+			return $available;
+		}
 
 		$iterator = new RecursiveIteratorIterator(
 			new RecursiveDirectoryIterator($this->phpbb_root_path . 'ext/'),
@@ -428,6 +432,28 @@ class phpbb_extension_manager
 		}
 		return $disabled;
 	}
+	
+	/**
+	* Check to see if a given extension is available on the filesystem
+	*
+	* @param string $name Extension name to check NOTE: Can be user input
+	* @return bool Depending on whether or not the extension is available
+	*/
+	public function available($name)
+	{
+		return file_exists($this->get_extension_path($name, true));
+	}
+
+	/**
+	* Check to see if a given extension is enabled
+	*
+	* @param string $name Extension name to check
+	* @return bool Depending on whether or not the extension is enabled
+	*/
+	public function enabled($name)
+	{
+		return isset($this->extensions[$name]) && $this->extensions[$name]['ext_active'];
+	}
 
 	/**
 	* Instantiates a phpbb_extension_finder.