Moves access permissions references over to using the ACCESS_* constants defined in access.php. Refs #687

git-svn-id: https://code.elgg.org/elgg/trunk@2639 36083f99-b078-4883-b0ff-0f9b5a30f544

1 files changed, 457 insertions, 457 deletions

diff --git a/engine/lib/plugins.php b/engine/lib/plugins.php
index 3ba31b521..a38f159cc 100644
--- a/engine/lib/plugins.php
+++ b/engine/lib/plugins.php
@@ -11,77 +11,77 @@
 		 * @copyright Curverider Ltd 2008-2009

 		 * @link http://elgg.org/

 		 */

-
-		
-		/// Cache enabled plugins per page
+

+		

+		/// Cache enabled plugins per page

 		$ENABLED_PLUGINS_CACHE = NULL;

-
-		/**
-		 * PluginException
-		 *  
-		 * A plugin Exception, thrown when an Exception occurs relating to the plugin mechanism. Subclass for specific plugin Exceptions.
-		 * 
-		 * @package Elgg
-		 * @subpackage Exceptions
-		 */
-		class PluginException extends Exception {}
-		
-		/**
-		 * @class ElggPlugin Object representing a plugin's settings for a given site.
-		 * This class is currently a stub, allowing a plugin to saving settings in an object's metadata for each site.
-		 * @author Curverider Ltd
-		 */
-		class ElggPlugin extends ElggObject
-		{
-			protected function initialise_attributes()
-			{
-				parent::initialise_attributes();
-				
-				$this->attributes['subtype'] = "plugin";
-			}
-			
-			public function __construct($guid = null) 
-			{			
-				parent::__construct($guid);
-			}
-			
-			/**
-			 * Override entity get and sets in order to save data to private data store.
-			 */
-			public function get($name)
-			{
-				// See if its in our base attribute
-				if (isset($this->attributes[$name])) {
-					return $this->attributes[$name];
-				}
-				
-				// No, so see if its in the private data store.
-				$meta = get_private_setting($this->guid, $name);
-				if ($meta)
-					return $meta;
-				
-				// Can't find it, so return null
-				return null;
-			}
-
-			/**
-			 * Override entity get and sets in order to save data to private data store.
-			 */
-			public function set($name, $value)
-			{
-				if (array_key_exists($name, $this->attributes))
-				{
-					// Check that we're not trying to change the guid! 
-					if ((array_key_exists('guid', $this->attributes)) && ($name=='guid'))
-						return false;
-						
-					$this->attributes[$name] = $value;
-				}
-				else 
-					return set_private_setting($this->guid, $name, $value);
-			
-				return true;
-			}
+

+		/**

+		 * PluginException

+		 *  

+		 * A plugin Exception, thrown when an Exception occurs relating to the plugin mechanism. Subclass for specific plugin Exceptions.

+		 * 

+		 * @package Elgg

+		 * @subpackage Exceptions

+		 */

+		class PluginException extends Exception {}

+		

+		/**

+		 * @class ElggPlugin Object representing a plugin's settings for a given site.

+		 * This class is currently a stub, allowing a plugin to saving settings in an object's metadata for each site.

+		 * @author Curverider Ltd

+		 */

+		class ElggPlugin extends ElggObject

+		{

+			protected function initialise_attributes()

+			{

+				parent::initialise_attributes();

+				

+				$this->attributes['subtype'] = "plugin";

+			}

+			

+			public function __construct($guid = null) 

+			{			

+				parent::__construct($guid);

+			}

+			

+			/**

+			 * Override entity get and sets in order to save data to private data store.

+			 */

+			public function get($name)

+			{

+				// See if its in our base attribute

+				if (isset($this->attributes[$name])) {

+					return $this->attributes[$name];

+				}

+				

+				// No, so see if its in the private data store.

+				$meta = get_private_setting($this->guid, $name);

+				if ($meta)

+					return $meta;

+				

+				// Can't find it, so return null

+				return null;

+			}

+

+			/**

+			 * Override entity get and sets in order to save data to private data store.

+			 */

+			public function set($name, $value)

+			{

+				if (array_key_exists($name, $this->attributes))

+				{

+					// Check that we're not trying to change the guid! 

+					if ((array_key_exists('guid', $this->attributes)) && ($name=='guid'))

+						return false;

+						

+					$this->attributes[$name] = $value;

+				}

+				else 

+					return set_private_setting($this->guid, $name, $value);

+			

+				return true;

+			}

 		}

 		

 		/**

@@ -201,22 +201,22 @@
 			return false;

 			

 		}

-		
+		

 

 		/**

 		 * For now, loads plugins directly

 		 *

-		 * @todo Add proper plugin handler that launches plugins in an admin-defined order and activates them on admin request
-		 * @package Elgg
+		 * @todo Add proper plugin handler that launches plugins in an admin-defined order and activates them on admin request

+		 * @package Elgg

 		 * @subpackage Core

 		 */

 		function load_plugins() {

 

 			global $CONFIG;

-			if (!empty($CONFIG->pluginspath)) {
-				
-				// temporary disable all plugins if there is a file called 'disabled' in the plugin dir
-				if (file_exists($CONFIG->pluginspath . "disabled"))
+			if (!empty($CONFIG->pluginspath)) {

+				

+				// temporary disable all plugins if there is a file called 'disabled' in the plugin dir

+				if (file_exists($CONFIG->pluginspath . "disabled"))

 					return;

 				

 				$plugins = get_plugin_list();

@@ -281,255 +281,255 @@
 				}

 			}

 			return false;

-		}
-		
-		/**
-		 * Load and parse a plugin manifest from a plugin XML file.
-		 * 
-		 * Example file:
-		 * 
-		 * <plugin_manifest>
-		 * 	<field key="author" value="Curverider Ltd" />
-		 *  <field key="version" value="1.0" />
-		 * 	<field key="description" value="My plugin description, keep it short" />
-		 *  <field key="website" value="http://www.elgg.org/" />
-		 *  <field key="copyright" value="(C) Curverider 2008-2009" />
-		 *  <field key="licence" value="GNU Public License version 2" />
-		 * </plugin_manifest>
-		 *
-		 * @param string $plugin Plugin name.
-		 * @return array of values
-		 */
-		function load_plugin_manifest($plugin)
-		{
-			global $CONFIG;
-			
-			$xml = xml_2_object(file_get_contents($CONFIG->pluginspath . $plugin. "/manifest.xml"));
-			
-			if ($xml)
-			{
-				$elements = array();
-				
-				foreach ($xml->children as $element)
-				{
-					$key = $element->attributes['key'];
-					$value = $element->attributes['value'];
-					
-					$elements[$key] = $value;
-				}
-				
-				return $elements;
-			}
-			
-			return false;
-		}
-		
-		/**
-		 * Shorthand function for finding the plugin settings.
-		 * 
-		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you
-		 * 								are calling from.
-		 */
-		function find_plugin_settings($plugin_name = "")
-		{
-			$plugins = get_entities('object', 'plugin');
-			$plugin_name = sanitise_string($plugin_name);
-			if (!$plugin_name)
-				$plugin_name = get_plugin_name();
-	
-			if ($plugins)
-			{
-				foreach ($plugins as $plugin)			
-					if (strcmp($plugin->title, $plugin_name)==0)
-						return $plugin;
-			}
-			
-			return false;
-		}
-		
-		/**
-		 * Find the plugin settings for a user.
-		 *
-		 * @param string $plugin_name Plugin name.
-		 * @param int $user_guid The guid who's settings to retrieve.
-		 * @return array of settings in an associative array minus prefix.
-		 */
-		function find_plugin_usersettings($plugin_name = "", $user_guid = 0)
-		{
-			$plugin_name = sanitise_string($plugin_name);
-			$user_guid = (int)$user_guid;
-			
-			if (!$plugin_name)
-				$plugin_name = get_plugin_name();
-				
-			if ($user_guid == 0) $user_guid = get_loggedin_userid();
-			
-			// Get metadata for user
-			$all_metadata = get_all_private_settings($user_guid); //get_metadata_for_entity($user_guid);
-			if ($all_metadata)
-			{
-				$prefix = "plugin:settings:$plugin_name:";
-				$return = new stdClass;
-				
-				foreach ($all_metadata as $key => $meta)
-				{
-					$name = substr($key, strlen($prefix));
-					$value = $meta;
-					
-					if (strpos($key, $prefix) === 0)
-						$return->$name = $value;
-				}
-
-				return $return;			
-			}
-			
-			return false;
-		}
-		
-		/**
-		 * Set a user specific setting for a plugin.
-		 *
-		 * @param string $name The name - note, can't be "title".
-		 * @param mixed $value The value.
-		 * @param int $user_guid Optional user.
-		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you are calling from.
-		 */
-		function set_plugin_usersetting($name, $value, $user_guid = 0, $plugin_name = "")
-		{
-			$plugin_name = sanitise_string($plugin_name);
-			$user_guid = (int)$user_guid;
-			$name = sanitise_string($name);
-			
-			if (!$plugin_name)
-				$plugin_name = get_plugin_name();
-							
-			$user = get_entity($user_guid);
-			if (!$user) $user = get_loggedin_user();
-			
-			if (($user) && ($user instanceof ElggUser))
-			{
-				$prefix = "plugin:settings:$plugin_name:$name";
-				//$user->$prefix = $value;
-				//$user->save();
-				
-				// Hook to validate setting
-				$value = trigger_plugin_hook('plugin:usersetting', 'user', array(
-					'user' => $user,
-					'plugin' => $plugin_name,
-					'name' => $name,
-					'value' => $value
-				), $value);
-					
-				return set_private_setting($user->guid, $prefix, $value);
-			}
-			
-			return false;
-		}
-		
-		/**
-		 * Get a user specific setting for a plugin.
-		 *
-		 * @param string $name The name.
-		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you are calling from.
-		 */
-		function get_plugin_usersetting($name, $user_guid = 0, $plugin_name = "")
-		{
-			$plugin_name = sanitise_string($plugin_name);
-			$user_guid = (int)$user_guid;
-			$name = sanitise_string($name);
-			
-			if (!$plugin_name)
-				$plugin_name = get_plugin_name();
-				
-			$user = get_entity($user_guid);
-			if (!$user) $user = get_loggedin_user();
-			
-			if (($user) && ($user instanceof ElggUser))
-			{
-				$prefix = "plugin:settings:$plugin_name:$name";
-				return get_private_setting($user->guid, $prefix); //$user->$prefix;
-			}
-			
-			return false;
-		}
-			
-		/**
-		 * Set a setting for a plugin.
-		 *
-		 * @param string $name The name - note, can't be "title".
-		 * @param mixed $value The value.
-		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you are calling from.
-		 */
-		function set_plugin_setting($name, $value, $plugin_name = "")
-		{	
-			if (!$plugin_name) $plugin_name = get_plugin_name();	
-			$plugin = find_plugin_settings($plugin_name);
-			
-			if (!$plugin) 
-				$plugin = new ElggPlugin();
-				
-			if ($name!='title') 
-			{
-				// Hook to validate setting
-				$value = trigger_plugin_hook('plugin:setting', 'plugin', array(
-					'plugin' => $plugin_name,
-					'name' => $name,
-					'value' => $value
-				), $value);
-				
-				$plugin->title = $plugin_name;
-				$plugin->access_id = 2;
-				$plugin->save();
-				$plugin->$name = $value;
-				
-				return $plugin->getGUID();
-			}
-			
-			return false;
-		}
-		
-		/**
-		 * Get setting for a plugin.
-		 *
-		 * @param string $name The name.
-		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you are calling from.
-		 */
-		function get_plugin_setting($name, $plugin_name = "")
-		{
-			$plugin = find_plugin_settings($plugin_name);
-		
-			if ($plugin)
-				return $plugin->$name;
-			
-			return false;
-		}
-		
-		/**
-		 * Clear a plugin setting.
-		 *
-		 * @param string $name The name.
-		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you are calling from.
-		 */
-		function clear_plugin_setting($name, $plugin_name = "")
-		{
-			$plugin = find_plugin_settings($plugin_name);
-			
-			if ($plugin)
-				return remove_all_private_settings($plugin->guid); //$plugin->clearMetaData($name);
-			
-			return false;
-		}
-		
-		/**
-		 * Return an array of installed plugins.
-		 */
-		function get_installed_plugins()
-		{
-			global $CONFIG;
-			
-			$installed_plugins = array();
-			
-			if (!empty($CONFIG->pluginspath)) {
+		}

+		

+		/**

+		 * Load and parse a plugin manifest from a plugin XML file.

+		 * 

+		 * Example file:

+		 * 

+		 * <plugin_manifest>

+		 * 	<field key="author" value="Curverider Ltd" />

+		 *  <field key="version" value="1.0" />

+		 * 	<field key="description" value="My plugin description, keep it short" />

+		 *  <field key="website" value="http://www.elgg.org/" />

+		 *  <field key="copyright" value="(C) Curverider 2008-2009" />

+		 *  <field key="licence" value="GNU Public License version 2" />

+		 * </plugin_manifest>

+		 *

+		 * @param string $plugin Plugin name.

+		 * @return array of values

+		 */

+		function load_plugin_manifest($plugin)

+		{

+			global $CONFIG;

+			

+			$xml = xml_2_object(file_get_contents($CONFIG->pluginspath . $plugin. "/manifest.xml"));

+			

+			if ($xml)

+			{

+				$elements = array();

+				

+				foreach ($xml->children as $element)

+				{

+					$key = $element->attributes['key'];

+					$value = $element->attributes['value'];

+					

+					$elements[$key] = $value;

+				}

+				

+				return $elements;

+			}

+			

+			return false;

+		}

+		

+		/**

+		 * Shorthand function for finding the plugin settings.

+		 * 

+		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you

+		 * 								are calling from.

+		 */

+		function find_plugin_settings($plugin_name = "")

+		{

+			$plugins = get_entities('object', 'plugin');

+			$plugin_name = sanitise_string($plugin_name);

+			if (!$plugin_name)

+				$plugin_name = get_plugin_name();

+	

+			if ($plugins)

+			{

+				foreach ($plugins as $plugin)			

+					if (strcmp($plugin->title, $plugin_name)==0)

+						return $plugin;

+			}

+			

+			return false;

+		}

+		

+		/**

+		 * Find the plugin settings for a user.

+		 *

+		 * @param string $plugin_name Plugin name.

+		 * @param int $user_guid The guid who's settings to retrieve.

+		 * @return array of settings in an associative array minus prefix.

+		 */

+		function find_plugin_usersettings($plugin_name = "", $user_guid = 0)

+		{

+			$plugin_name = sanitise_string($plugin_name);

+			$user_guid = (int)$user_guid;

+			

+			if (!$plugin_name)

+				$plugin_name = get_plugin_name();

+				

+			if ($user_guid == 0) $user_guid = get_loggedin_userid();

+			

+			// Get metadata for user

+			$all_metadata = get_all_private_settings($user_guid); //get_metadata_for_entity($user_guid);

+			if ($all_metadata)

+			{

+				$prefix = "plugin:settings:$plugin_name:";

+				$return = new stdClass;

+				

+				foreach ($all_metadata as $key => $meta)

+				{

+					$name = substr($key, strlen($prefix));

+					$value = $meta;

+					

+					if (strpos($key, $prefix) === 0)

+						$return->$name = $value;

+				}

+

+				return $return;			

+			}

+			

+			return false;

+		}

+		

+		/**

+		 * Set a user specific setting for a plugin.

+		 *

+		 * @param string $name The name - note, can't be "title".

+		 * @param mixed $value The value.

+		 * @param int $user_guid Optional user.

+		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you are calling from.

+		 */

+		function set_plugin_usersetting($name, $value, $user_guid = 0, $plugin_name = "")

+		{

+			$plugin_name = sanitise_string($plugin_name);

+			$user_guid = (int)$user_guid;

+			$name = sanitise_string($name);

+			

+			if (!$plugin_name)

+				$plugin_name = get_plugin_name();

+							

+			$user = get_entity($user_guid);

+			if (!$user) $user = get_loggedin_user();

+			

+			if (($user) && ($user instanceof ElggUser))

+			{

+				$prefix = "plugin:settings:$plugin_name:$name";

+				//$user->$prefix = $value;

+				//$user->save();

+				

+				// Hook to validate setting

+				$value = trigger_plugin_hook('plugin:usersetting', 'user', array(

+					'user' => $user,

+					'plugin' => $plugin_name,

+					'name' => $name,

+					'value' => $value

+				), $value);

+					

+				return set_private_setting($user->guid, $prefix, $value);

+			}

+			

+			return false;

+		}

+		

+		/**

+		 * Get a user specific setting for a plugin.

+		 *

+		 * @param string $name The name.

+		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you are calling from.

+		 */

+		function get_plugin_usersetting($name, $user_guid = 0, $plugin_name = "")

+		{

+			$plugin_name = sanitise_string($plugin_name);

+			$user_guid = (int)$user_guid;

+			$name = sanitise_string($name);

+			

+			if (!$plugin_name)

+				$plugin_name = get_plugin_name();

+				

+			$user = get_entity($user_guid);

+			if (!$user) $user = get_loggedin_user();

+			

+			if (($user) && ($user instanceof ElggUser))

+			{

+				$prefix = "plugin:settings:$plugin_name:$name";

+				return get_private_setting($user->guid, $prefix); //$user->$prefix;

+			}

+			

+			return false;

+		}

+			

+		/**

+		 * Set a setting for a plugin.

+		 *

+		 * @param string $name The name - note, can't be "title".

+		 * @param mixed $value The value.

+		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you are calling from.

+		 */

+		function set_plugin_setting($name, $value, $plugin_name = "")

+		{	

+			if (!$plugin_name) $plugin_name = get_plugin_name();	

+			$plugin = find_plugin_settings($plugin_name);

+			

+			if (!$plugin) 

+				$plugin = new ElggPlugin();

+				

+			if ($name!='title') 

+			{

+				// Hook to validate setting

+				$value = trigger_plugin_hook('plugin:setting', 'plugin', array(

+					'plugin' => $plugin_name,

+					'name' => $name,

+					'value' => $value

+				), $value);

+				

+				$plugin->title = $plugin_name;

+				$plugin->access_id = ACCESS_PUBLIC;

+				$plugin->save();

+				$plugin->$name = $value;

+				

+				return $plugin->getGUID();

+			}

+			

+			return false;

+		}

+		

+		/**

+		 * Get setting for a plugin.

+		 *

+		 * @param string $name The name.

+		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you are calling from.

+		 */

+		function get_plugin_setting($name, $plugin_name = "")

+		{

+			$plugin = find_plugin_settings($plugin_name);

+		

+			if ($plugin)

+				return $plugin->$name;

+			

+			return false;

+		}

+		

+		/**

+		 * Clear a plugin setting.

+		 *

+		 * @param string $name The name.

+		 * @param string $plugin_name Optional plugin name, if not specified then it is detected from where you are calling from.

+		 */

+		function clear_plugin_setting($name, $plugin_name = "")

+		{

+			$plugin = find_plugin_settings($plugin_name);

+			

+			if ($plugin)

+				return remove_all_private_settings($plugin->guid); //$plugin->clearMetaData($name);

+			

+			return false;

+		}

+		

+		/**

+		 * Return an array of installed plugins.

+		 */

+		function get_installed_plugins()

+		{

+			global $CONFIG;

+			

+			$installed_plugins = array();

+			

+			if (!empty($CONFIG->pluginspath)) {

 				

 				$plugins = get_plugin_list();

 				

@@ -538,140 +538,140 @@
 					$installed_plugins[$mod]['active'] = is_plugin_enabled($mod);

 					$installed_plugins[$mod]['manifest'] = load_plugin_manifest($mod);

 				}

-				
-			}
-			
-			return $installed_plugins;
-		}
-		
-		/**
-		 * Enable a plugin for a site (default current site)
-		 *
-		 * @param string $plugin The plugin name.
-		 * @param int $site_guid The site id, if not specified then this is detected.
-		 */
-		function enable_plugin($plugin, $site_guid = 0)
-		{
-			global $CONFIG;
-			
-			$plugin = sanitise_string($plugin);
-			$site_guid = (int) $site_guid;
-			if ($site_guid == 0)
-				$site_guid = $CONFIG->site_guid;
-				
-			$site = get_entity($site_guid);
-			if (!($site instanceof ElggSite))
-				throw new InvalidClassException(sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $site_guid, "ElggSite"));
-				
-			$enabled = $site->getMetaData('enabled_plugins');
-			$new_enabled = array();
-			if ($enabled)
-			{
-				if (!is_array($enabled))
-					$new_enabled[] = $enabled;
-				else
-					$new_enabled = $enabled;
-			}
-			$new_enabled[] = $plugin;
-			$new_enabled = array_unique($new_enabled);
-			
-			$return = $site->setMetaData('enabled_plugins', $new_enabled);
-			
-			return $return; 
-		}
-		
-		/**
-		 * Disable a plugin for a site (default current site)
-		 *
-		 * @param string $plugin The plugin name.
-		 * @param int $site_guid The site id, if not specified then this is detected.
-		 */
-		function disable_plugin($plugin, $site_guid = 0)
-		{
-			global $CONFIG;
-			
-			$plugin = sanitise_string($plugin);
-			$site_guid = (int) $site_guid;
-			if ($site_guid == 0)
-				$site_guid = $CONFIG->site_guid;
-				
-			$site = get_entity($site_guid);
-			if (!($site instanceof ElggSite))
-				throw new InvalidClassException(sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $site_guid, "ElggSite"));
-				
-			$enabled = $site->getMetaData('enabled_plugins');
-			$new_enabled = array();
-		
-			foreach ($enabled as $plug)
-				if ($plugin != $plug)
-					$new_enabled[] = $plug;
-					
-			$return = $site->setMetaData('enabled_plugins', $new_enabled);
-					
-			return $return;
-		}
-		
-		/**
-		 * Return whether a plugin is enabled or not.
-		 *
-		 * @param string $plugin The plugin name.
-		 * @param int $site_guid The site id, if not specified then this is detected.
-		 * @return bool
-		 */
-		function is_plugin_enabled($plugin, $site_guid = 0)
-		{
-			global $CONFIG, $ENABLED_PLUGINS_CACHE;
-			
-			if (!file_exists($CONFIG->pluginspath . $plugin)) return false;
-			
-			$site_guid = (int) $site_guid;
-			if ($site_guid == 0)
-				$site_guid = $CONFIG->site_guid;
-				
-				
-			if (!$ENABLED_PLUGINS_CACHE) {
-				$site = get_entity($site_guid);
-				if (!($site instanceof ElggSite))
-					throw new InvalidClassException(sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $site_guid, "ElggSite"));
-			
-				$ENABLED_PLUGINS_CACHE = $site->enabled_plugins;
-			}
-				
-			foreach ($ENABLED_PLUGINS_CACHE as $e)
-				if ($e == $plugin) return true;
-				
-			return false;
-		}
+				

+			}

+			

+			return $installed_plugins;

+		}

 		

-		/**
-		 * Run once and only once.
-		 */
-		function plugin_run_once()
-		{
-			// Register a class
-			add_subtype("object", "plugin", "ElggPlugin");	
-		}
-		
-		/** 
-		 * Initialise the file modules. 
-		 * Listens to system boot and registers any appropriate file types and classes 
-		 */
-		function plugin_init()
-		{
-			// Now run this stuff, but only once
-			run_function_once("plugin_run_once");
-			
-			// Register some actions
-			register_action("plugins/settings/save", false, "", true);
-			register_action("plugins/usersettings/save");
-			
-			register_action('admin/plugins/enable', false, "", true); // Enable
+		/**

+		 * Enable a plugin for a site (default current site)

+		 *

+		 * @param string $plugin The plugin name.

+		 * @param int $site_guid The site id, if not specified then this is detected.

+		 */

+		function enable_plugin($plugin, $site_guid = 0)

+		{

+			global $CONFIG;

+			

+			$plugin = sanitise_string($plugin);

+			$site_guid = (int) $site_guid;

+			if ($site_guid == 0)

+				$site_guid = $CONFIG->site_guid;

+				

+			$site = get_entity($site_guid);

+			if (!($site instanceof ElggSite))

+				throw new InvalidClassException(sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $site_guid, "ElggSite"));

+				

+			$enabled = $site->getMetaData('enabled_plugins');

+			$new_enabled = array();

+			if ($enabled)

+			{

+				if (!is_array($enabled))

+					$new_enabled[] = $enabled;

+				else

+					$new_enabled = $enabled;

+			}

+			$new_enabled[] = $plugin;

+			$new_enabled = array_unique($new_enabled);

+			

+			$return = $site->setMetaData('enabled_plugins', $new_enabled);

+			

+			return $return; 

+		}

+		

+		/**

+		 * Disable a plugin for a site (default current site)

+		 *

+		 * @param string $plugin The plugin name.

+		 * @param int $site_guid The site id, if not specified then this is detected.

+		 */

+		function disable_plugin($plugin, $site_guid = 0)

+		{

+			global $CONFIG;

+			

+			$plugin = sanitise_string($plugin);

+			$site_guid = (int) $site_guid;

+			if ($site_guid == 0)

+				$site_guid = $CONFIG->site_guid;

+				

+			$site = get_entity($site_guid);

+			if (!($site instanceof ElggSite))

+				throw new InvalidClassException(sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $site_guid, "ElggSite"));

+				

+			$enabled = $site->getMetaData('enabled_plugins');

+			$new_enabled = array();

+		

+			foreach ($enabled as $plug)

+				if ($plugin != $plug)

+					$new_enabled[] = $plug;

+					

+			$return = $site->setMetaData('enabled_plugins', $new_enabled);

+					

+			return $return;

+		}

+		

+		/**

+		 * Return whether a plugin is enabled or not.

+		 *

+		 * @param string $plugin The plugin name.

+		 * @param int $site_guid The site id, if not specified then this is detected.

+		 * @return bool

+		 */

+		function is_plugin_enabled($plugin, $site_guid = 0)

+		{

+			global $CONFIG, $ENABLED_PLUGINS_CACHE;

+			

+			if (!file_exists($CONFIG->pluginspath . $plugin)) return false;

+			

+			$site_guid = (int) $site_guid;

+			if ($site_guid == 0)

+				$site_guid = $CONFIG->site_guid;

+				

+				

+			if (!$ENABLED_PLUGINS_CACHE) {

+				$site = get_entity($site_guid);

+				if (!($site instanceof ElggSite))

+					throw new InvalidClassException(sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $site_guid, "ElggSite"));

+			

+				$ENABLED_PLUGINS_CACHE = $site->enabled_plugins;

+			}

+				

+			foreach ($ENABLED_PLUGINS_CACHE as $e)

+				if ($e == $plugin) return true;

+				

+			return false;

+		}

+		

+		/**

+		 * Run once and only once.

+		 */

+		function plugin_run_once()

+		{

+			// Register a class

+			add_subtype("object", "plugin", "ElggPlugin");	

+		}

+		

+		/** 

+		 * Initialise the file modules. 

+		 * Listens to system boot and registers any appropriate file types and classes 

+		 */

+		function plugin_init()

+		{

+			// Now run this stuff, but only once

+			run_function_once("plugin_run_once");

+			

+			// Register some actions

+			register_action("plugins/settings/save", false, "", true);

+			register_action("plugins/usersettings/save");

+			

+			register_action('admin/plugins/enable', false, "", true); // Enable

 			register_action('admin/plugins/disable', false, "", true); // Disable

 			

 			register_action('admin/plugins/reorder', false, "", true); // Disable

-			
-		}
-		
-		// Register a startup event
+			

+		}

+		

+		// Register a startup event

 		register_elgg_event_handler('init','system','plugin_init');	

 ?>
\ No newline at end of file