Fix Authentication workflow

Fix ldap backends to use Credentials to work with. Fix
some tests to use include right files.

refs #4340

library/Icinga/Authentication/Backend.php

@@ -6,6 +6,9 @@ namespace Icinga\Authentication;
 
 class Backend
 {
+    /**
+     * @var UserBackend
+     */
     protected $userBackend;
 
     public function __construct($config)

library/Icinga/Authentication/Backend/LdapUserBackend.php

@@ -5,6 +5,8 @@
 namespace Icinga\Authentication\Backend;
 
 use Icinga\Authentication\User as User;
+use Icinga\Authentication\UserBackend;
+use Icinga\Authentication\Credentials;
 use Icinga\Protocol\Ldap;
 
 class LdapUserBackend implements UserBackend
@@ -16,14 +18,11 @@ class LdapUserBackend implements UserBackend
         $this->connection = new Ldap\Connection($config);
     }
 
-    public function hasUsername($username)
+    public function hasUsername(Credentials $credential)
     {
-        if (!$username) {
-            return false;
-        }
         return $this->connection->fetchOne(
-            $this->selectUsername($username)
-        ) === $username;
+            $this->selectUsername($credential->getUsername())
+        ) === $credential->getUsername();
     }
 
     protected function stripAsterisks($string)
@@ -38,19 +37,15 @@ class LdapUserBackend implements UserBackend
             ->where('sAMAccountName', $this->stripAsterisks($username));
     }
 
-    public function authenticate($username, $password = null)
+    public function authenticate(Credentials $credentials)
     {
-        if (empty($username) || empty($password)) {
-            return false;
-        }
-
         if (!$this->connection->testCredentials(
-            $this->connection->fetchDN($this->selectUsername($username)),
-            $password
+            $this->connection->fetchDN($this->selectUsername($credentials->getUsername())),
+            $credentials->getPassword()
         )     ) {
             return false;
         }
-        $user = new User($username);
+        $user = new User($credentials->getUsername());
 
         return $user;
     }

library/Icinga/Authentication/UserBackend.php

@@ -1,15 +1,28 @@
 <?php
 // {{{ICINGA_LICENSE_HEADER}}}
-// {{{ICINGA_LICENSE_HEADER}}// {{{ICINGA_LICENSE_HEADER}}}
 // {{{ICINGA_LICENSE_HEADER}}}}
 
 namespace Icinga\Authentication;
 
 interface UserBackend
 {
+    /**
+     * Creates a new object
+     * @param $config
+     */
     public function __construct($config);
 
+    /**
+     * Test if the username exists
+     * @param Credentials $credentials
+     * @return boolean
+     */
     public function hasUsername(Credentials $credentials);
 
+    /**
+     * Authenticate
+     * @param Credentials $credentials
+     * @return User
+     */
     public function authenticate(Credentials $credentials);
 }

test/php/library/Icinga/Authentication/PhpSessionTest.php

@@ -7,6 +7,7 @@ namespace Tests\Icinga\Authentication;
 require_once("../../library/Icinga/Authentication/Session.php");
 require_once("../../library/Icinga/Authentication/PhpSession.php");
 require_once("../../library/Icinga/Application/Logger.php");
+require_once("../../library/Icinga/Exception/ConfigurationError.php");
 require_once("Zend/Log.php");
 
 use Icinga\Authentication\PhpSession as PhpSession;