enable/disable plugins from admin page

boot.php

@@ -453,6 +453,37 @@ function system_unavailable() {
 	killme();
 }}
 
+
+// install and uninstall plugin
+if (! function_exists('uninstall_plugin')){
+function uninstall_plugin($plugin){
+	logger("Addons: uninstalling " . $plugin);
+	q("DELETE FROM `addon` WHERE `name` = '%s' LIMIT 1",
+		dbesc($plugin)
+	);
+
+	@include_once('addon/' . $plugin . '/' . $plugin . '.php');
+	if(function_exists($plugin . '_uninstall')) {
+		$func = $plugin . '_uninstall';
+		$func();
+	}
+}}
+
+if (! function_exists('install_plugin')){
+function install_plugin($plugin){
+	logger("Addons: installing " . $plugin);
+	$t = filemtime('addon/' . $plugin . '/' . $plugin . '.php');
+	@include_once('addon/' . $plugin . '/' . $plugin . '.php');
+	if(function_exists($plugin . '_install')) {
+		$func = $plugin . '_install';
+		$func();
+		$r = q("INSERT INTO `addon` (`name`, `installed`, `timestamp`) VALUES ( '%s', 1, %d ) ",
+			dbesc($plugin),
+			intval($t)
+		);
+	}
+}}
+
 // Primarily involved with database upgrade, but also sets the 
 // base url for use in cmdline programs which don't have
 // $_SERVER variables, and synchronising the state of installed plugins.
@@ -538,16 +569,7 @@ function check_config(&$a) {
 	if(count($installed)) {
 		foreach($installed as $i) {
 			if(! in_array($i['name'],$plugins_arr)) {
-				logger("Addons: uninstalling " . $i['name']);
-				q("DELETE FROM `addon` WHERE `id` = %d LIMIT 1",
-					intval($i['id'])
-				);
-
-				@include_once('addon/' . $i['name'] . '/' . $i['name'] . '.php');
-				if(function_exists($i['name'] . '_uninstall')) {
-					$func = $i['name'] . '_uninstall';
-					$func();
-				}
+				uninstall_plugin($i['name']);
 			}
 			else
 				$installed_arr[] = $i['name'];
@@ -557,17 +579,7 @@ function check_config(&$a) {
 	if(count($plugins_arr)) {
 		foreach($plugins_arr as $p) {
 			if(! in_array($p,$installed_arr)) {
-				logger("Addons: installing " . $p);
-				$t = filemtime('addon/' . $p . '/' . $p . '.php');
-				@include_once('addon/' . $p . '/' . $p . '.php');
-				if(function_exists($p . '_install')) {
-					$func = $p . '_install';
-					$func();
-					$r = q("INSERT INTO `addon` (`name`, `installed`, `timestamp`) VALUES ( '%s', 1, %d ) ",
-						dbesc($p),
-						intval($t)
-					);
-				}
+				install_plugin($p);
 			}
 		}
 	}

mod/admin.php

@@ -310,7 +310,58 @@ function admin_page_users(&$a){
 
 function admin_page_plugins(&$a){
 	
-	/* all plugins */
+	/**
+	 * Single plugin
+	 */
+	if ($a->argc == 3){
+		$plugin = $a->argv[2];
+		if (!is_file("addon/$plugin/$plugin.php")){
+			notice( t("Item not found.") );
+			return;
+		}
+		
+		if (x($_GET,"a") && $_GET['a']=="t"){
+			// Toggle plugin status
+			$idx = array_search($plugin, $a->plugins);
+			if ($idx){
+				unset($a->plugins[$idx]);
+				uninstall_plugin($plugin);
+			} else {
+				$a->plugins[] = $plugin;
+				install_plugin($plugin);
+			}
+			set_config("system","addon", implode(", ",$a->plugins));
+			goaway($a->get_baseurl() . '/admin/plugins' );
+			return; // NOTREACHED	
+		}
+		// display plugin details
+		
+
+		if (in_array($plugin, $a->plugins)){
+			$status="on"; $action= t("Disable");
+		} else {
+			$status="off"; $action= t("Enable");
+		}
+		
+		$t = get_markup_template("admin_plugins_details.tpl");
+		return replace_macros($t, array(
+			'$title' => t('Administration'),
+			'$page' => t('Plugins'),
+			'$toggle' => t('Toggle'),
+			'$baseurl' => $a->get_baseurl(),
+		
+			'$plugin' => $plugin,
+			'$status' => $status,
+			'$action' => $action
+		));
+	} 
+	 
+	 
+	
+	/**
+	 * List plugins
+	 */
+	
 	$plugins = array();
 	$files = glob("addon/*/");
 	if($files) {