added modman and composer

app/code/community/Inchoo/LoginAsCustomer/controllers/Adminhtml/Inchoo/LoginAsCustomerController.php

@@ -32,6 +32,12 @@
  */
 class Inchoo_LoginAsCustomer_Adminhtml_Inchoo_LoginAsCustomerController extends Mage_Adminhtml_Controller_Action
 {
+
+    protected function _isAllowed()
+    {
+        return Mage::getSingleton('admin/session')->isLoggedIn();
+    }
+
     public function indexAction()
     {
         $this->loadLayout()->_setActiveMenu('sales/inchoo_loginAsCustomer');
@@ -49,11 +55,20 @@ public function gridAction()
     public function loginAction()
     {
         $info = Mage::helper('core')->encrypt(serialize(array(
-            'website_id' => $this->getRequest()->getParam('website_id'),
-            'customer_id' => $this->getRequest()->getParam('customer_id'),
-            'timestamp' => time(),
-        )));
+                    'website_id' => $this->getRequest()->getParam('website_id'),
+                    'customer_id' => $this->getRequest()->getParam('customer_id'),
+                    'timestamp' => time(),
+                )));
+
+        $store = Mage::app()->getWebsite($this->getRequest()->getParam('website_id'))->getDefaultStore();
+
+        $args = array(
+            'loginAsCustomer' => base64_encode($info),
+            '_store'          => $store,
+        );
+
+        $url = Mage::getModel('core/url')->getUrl('inchoo_loginAsCustomer/customer/login', $args);
 
-        $this->_redirectUrl(Mage::app()->getWebsite($this->getRequest()->getParam('website_id'))->getConfig('web/unsecure/base_url').'index.php/inchoo_loginAsCustomer/customer/login?loginAsCustomer='.base64_encode($info));
+        $this->_redirectUrl($url);
     }
 }

app/locale/de_DE/Inchoo_LoginAsCustomer.csv

@@ -0,0 +1,5 @@
+"Login as Customer","Als Kunde anmelden"
+"Login as customer %s (choose a website to log into)","Als Kunde anmelden (wählen Sie eine Webseite, in der Sie sich anmelden wollen)"
+"Website Name","Webseite Name"
+"Edit Website","Bearbeite Webseite"
+"<i>Share Customer Accounts</i> option is set to <i>Per Website</i>. You are trying to login as customer from website %d into website %s. This action is not allowed.","<i>Kundenkonten verteilen</i> ist eingestellt auf <i>pro Webseite</i>. Sie versuchen sich von der Webseite %d auf der Website %s anzumelden. Dieses ist leider nicht möglich."

composer.json

@@ -0,0 +1,9 @@
+{
+   "name": "inchoo/loginascustomer",
+   "type": "magento-module",
+   "description": "login as customer from backend",
+   "homepage": "https://github.com/ajzele/Inchoo_LoginAsCustomer",
+   "require": {
+      "magento-hackathon/magento-composer-installer": "*"
+   }
+}

modman

@@ -0,0 +1,4 @@
+app/etc/modules/Inchoo_LoginAsCustomer.xml                                app/etc/modules/Inchoo_LoginAsCustomer.xml
+app/code/community/Inchoo/LoginAsCustomer/                                app/code/community/Inchoo/LoginAsCustomer/
+app/locale/pt_BR/Inchoo_LoginAsCustomer.csv                               app/locale/pt_BR/Inchoo_LoginAsCustomer.csv
+app/locale/de_DE/Inchoo_LoginAsCustomer.csv                               app/locale/de_DE/Inchoo_LoginAsCustomer.csv