2 files changed, 80 insertions, 72 deletions
diff --git a/phpBB/includes/acp/acp_extensions.php b/phpBB/includes/acp/acp_extensions.php
index 5a2ded91e2..ef5f78d5bf 100644
--- a/phpBB/includes/acp/acp_extensions.php
+++ b/phpBB/includes/acp/acp_extensions.php
@@ -56,21 +56,6 @@ class acp_extensions
 		$safe_time_limit = (ini_get('max_execution_time') / 2);
 		$start_time = time();
 
-		/**
-		* Event to run a specific action on extension
-		*
-		* @event core.acp_extensions_run_action
-		* @var	string	action			Action to run
-		* @var	string	u_action		Url we are at
-		* @var	string	ext_name		Extension name from request
-		* @var	int		safe_time_limit	Safe limit of execution time
-		* @var	int		start_time		Start time
-		* @since 3.1.11-RC1
-		*/
-		$u_action = $this->u_action;
-		$vars = array('action', 'u_action', 'ext_name', 'safe_time_limit', 'start_time');
-		extract($this->phpbb_dispatcher->trigger_event('core.acp_extensions_run_action', compact($vars)));
-
 		// Cancel action
 		if ($request->is_set_post('cancel'))
 		{
@@ -83,6 +68,28 @@ class acp_extensions
 			trigger_error('FORM_INVALID', E_USER_WARNING);
 		}
 
+		/**
+		* Event to run a specific action on extension
+		*
+		* @event core.acp_extensions_run_action_before
+		* @var	string	action			Action to run; if the event completes execution of the action, should be set to 'none'
+		* @var	string	u_action		Url we are at
+		* @var	string	ext_name		Extension name from request
+		* @var	int		safe_time_limit	Safe limit of execution time
+		* @var	int		start_time		Start time
+		* @var	string	tpl_name		Template file to load
+		* @since 3.1.11-RC1
+		* @changed 3.2.1-RC1			Renamed to core.acp_extensions_run_action_before, added tpl_name, added action 'none'
+		*/
+		$u_action = $this->u_action;
+		$tpl_name = '';
+		$vars = array('action', 'u_action', 'ext_name', 'safe_time_limit', 'start_time', 'tpl_name');
+		extract($this->phpbb_dispatcher->trigger_event('core.acp_extensions_run_action_before', compact($vars)));
+
+		// In case they have been updated by the event
+		$this->u_action = $u_action;
+		$this->tpl_name = $tpl_name;
+
 		// If they've specified an extension, let's load the metadata manager and validate it.
 		if ($ext_name)
 		{
@@ -101,6 +108,10 @@ class acp_extensions
 		// What are we doing?
 		switch ($action)
 		{
+			case 'none':
+				// Intentionally empty, used by extensions that execute additional actions in the prior event
+				break;
+
 			case 'set_config_version_check_force_unstable':
 				$force_unstable = $this->request->variable('force_unstable', false);
 
@@ -141,14 +152,13 @@ class acp_extensions
 			break;
 
 			case 'enable_pre':
-				if (!$md_manager->validate_dir())
+				try
 				{
-					trigger_error($user->lang['EXTENSION_DIR_INVALID'] . adm_back_link($this->u_action), E_USER_WARNING);
+					$md_manager->validate_enable();
 				}
-
-				if (!$md_manager->validate_enable())
+				catch (\phpbb\extension\exception $e)
 				{
-					trigger_error($user->lang['EXTENSION_NOT_AVAILABLE'] . adm_back_link($this->u_action), E_USER_WARNING);
+					trigger_error($e . adm_back_link($this->u_action), E_USER_WARNING);
 				}
 
 				$extension = $phpbb_extension_manager->get_extension($ext_name);
@@ -172,14 +182,13 @@ class acp_extensions
 			break;
 
 			case 'enable':
-				if (!$md_manager->validate_dir())
+				try
 				{
-					trigger_error($user->lang['EXTENSION_DIR_INVALID'] . adm_back_link($this->u_action), E_USER_WARNING);
+					$md_manager->validate_enable();
 				}
-
-				if (!$md_manager->validate_enable())
+				catch (\phpbb\extension\exception $e)
 				{
-					trigger_error($user->lang['EXTENSION_NOT_AVAILABLE'] . adm_back_link($this->u_action), E_USER_WARNING);
+					trigger_error($e . adm_back_link($this->u_action), E_USER_WARNING);
 				}
 
 				$extension = $phpbb_extension_manager->get_extension($ext_name);
@@ -335,6 +344,27 @@ class acp_extensions
 				$this->tpl_name = 'acp_ext_details';
 			break;
 		}
+
+		/**
+		* Event to run after a specific action on extension has completed
+		*
+		* @event core.acp_extensions_run_action_after
+		* @var	string	action			Action that has run
+		* @var	string	u_action		Url we are at
+		* @var	string	ext_name		Extension name from request
+		* @var	int		safe_time_limit	Safe limit of execution time
+		* @var	int		start_time		Start time
+		* @var	string	tpl_name		Template file to load
+		* @since 3.1.11-RC1
+		*/
+		$u_action = $this->u_action;
+		$tpl_name = $this->tpl_name;
+		$vars = array('action', 'u_action', 'ext_name', 'safe_time_limit', 'start_time', 'tpl_name');
+		extract($this->phpbb_dispatcher->trigger_event('core.acp_extensions_run_action_after', compact($vars)));
+
+		// In case they have been updated by the event
+		$this->u_action = $u_action;
+		$this->tpl_name = $tpl_name;
 	}
 
 	/**
diff --git a/phpBB/phpbb/extension/metadata_manager.php b/phpBB/phpbb/extension/metadata_manager.php
index 107907609b..0842c5d7ae 100644
--- a/phpBB/phpbb/extension/metadata_manager.php
+++ b/phpBB/phpbb/extension/metadata_manager.php
@@ -109,29 +109,18 @@ class metadata_manager
 		{
 			case 'all':
 			default:
-				// Validate the metadata
-				if (!$this->validate())
-				{
-					return false;
-				}
-
+				$this->validate();
 				return $this->metadata;
 			break;
 
 			case 'version':
 			case 'name':
-				return ($this->validate($element)) ? $this->metadata[$element] : false;
+				$this->validate($element);
+				return $this->metadata[$element];
 			break;
 
 			case 'display-name':
-				if (isset($this->metadata['extra']['display-name']))
-				{
-					return $this->metadata['extra']['display-name'];
-				}
-				else
-				{
-					return ($this->validate('name')) ? $this->metadata['name'] : false;
-				}
+				return (isset($this->metadata['extra']['display-name'])) ? $this->metadata['extra']['display-name'] : $this->get_metadata('name');
 			break;
 		}
 	}
@@ -228,23 +217,8 @@ class metadata_manager
 		switch ($name)
 		{
 			case 'all':
-				$this->validate('display');
-
-				if (!$this->validate_dir())
-				{
-					throw new \phpbb\extension\exception($this->user->lang('EXTENSION_DIR_INVALID'));
-				}
-
-				if (!$this->validate_require_phpbb())
-				{
-					throw new \phpbb\extension\exception($this->user->lang('META_FIELD_NOT_SET', 'soft-require'));
-				}
-
-				if (!$this->validate_require_php())
-				{
-					throw new \phpbb\extension\exception($this->user->lang('META_FIELD_NOT_SET', 'require php'));
-				}
-			break;
+				$this->validate_enable();
+				// no break
 
 			case 'display':
 				foreach ($fields as $field => $data)
@@ -301,40 +275,43 @@ class metadata_manager
 	/**
 	* This array handles the verification that this extension can be enabled on this board
 	*
-	* @return bool True if validation succeeded, False if failed
+	* @return bool True if validation succeeded, throws an exception if invalid
+	* @throws \phpbb\extension\exception
 	*/
 	public function validate_enable()
 	{
 		// Check for valid directory & phpBB, PHP versions
-		if (!$this->validate_dir() || !$this->validate_require_phpbb() || !$this->validate_require_php())
-		{
-			return false;
-		}
-
-		return true;
+		return $this->validate_dir() && $this->validate_require_phpbb() && $this->validate_require_php();
 	}
 
 	/**
 	* Validates the most basic directory structure to ensure it follows <vendor>/<ext> convention.
 	*
-	* @return boolean True when passes validation
+	* @return boolean True when passes validation, throws an exception if invalid
+	* @throws \phpbb\extension\exception
 	*/
 	public function validate_dir()
 	{
-		return (substr_count($this->ext_name, '/') === 1 && $this->ext_name == $this->get_metadata('name'));
+		if (substr_count($this->ext_name, '/') !== 1 || $this->ext_name != $this->get_metadata('name'))
+		{
+			throw new \phpbb\extension\exception($this->user->lang('EXTENSION_DIR_INVALID'));
+		}
+
+		return true;
 	}
 
 
 	/**
 	* Validates the contents of the phpbb requirement field
 	*
-	* @return boolean True when passes validation
+	* @return boolean True when passes validation, throws an exception if invalid
+	* @throws \phpbb\extension\exception
 	*/
 	public function validate_require_phpbb()
 	{
 		if (!isset($this->metadata['extra']['soft-require']['phpbb/phpbb']))
 		{
-			return false;
+			throw new \phpbb\extension\exception($this->user->lang('META_FIELD_NOT_SET', 'soft-require'));
 		}
 
 		return true;
@@ -343,13 +320,14 @@ class metadata_manager
 	/**
 	* Validates the contents of the php requirement field
 	*
-	* @return boolean True when passes validation
+	* @return boolean True when passes validation, throws an exception if invalid
+	* @throws \phpbb\extension\exception
 	*/
 	public function validate_require_php()
 	{
 		if (!isset($this->metadata['require']['php']))
 		{
-			return false;
+			throw new \phpbb\extension\exception($this->user->lang('META_FIELD_NOT_SET', 'require php'));
 		}
 
 		return true;
@@ -372,10 +350,10 @@ class metadata_manager
 			'META_LICENSE'		=> $this->metadata['license'],
 
 			'META_REQUIRE_PHP'		=> (isset($this->metadata['require']['php'])) ? $this->metadata['require']['php'] : '',
-			'META_REQUIRE_PHP_FAIL'	=> !$this->validate_require_php(),
+			'META_REQUIRE_PHP_FAIL'	=> (isset($this->metadata['require']['php'])) ? false : true,
 
 			'META_REQUIRE_PHPBB'		=> (isset($this->metadata['extra']['soft-require']['phpbb/phpbb'])) ? $this->metadata['extra']['soft-require']['phpbb/phpbb'] : '',
-			'META_REQUIRE_PHPBB_FAIL'	=> !$this->validate_require_phpbb(),
+			'META_REQUIRE_PHPBB_FAIL'	=> (isset($this->metadata['extra']['soft-require']['phpbb/phpbb'])) ? false : true,
 
 			'META_DISPLAY_NAME'	=> (isset($this->metadata['extra']['display-name'])) ? $this->metadata['extra']['display-name'] : '',
 		));