UserBackend: Implement interface ConfigAwareFactory

refs #9609

library/Icinga/Application/ApplicationBootstrap.php

@@ -7,6 +7,7 @@ use ErrorException;
 use Exception;
 use LogicException;
 use Icinga\Application\Modules\Manager as ModuleManager;
+use Icinga\Authentication\User\UserBackend;
 use Icinga\Data\ConfigObject;
 use Icinga\Data\ResourceFactory;
 use Icinga\Exception\ConfigurationError;
@@ -544,6 +545,24 @@ abstract class ApplicationBootstrap
         return $this;
     }
 
+    /**
+     * Set up the user backend factory
+     *
+     * @return  $this
+     */
+    protected function setupUserBackendFactory()
+    {
+        try {
+            UserBackend::setConfig(Config::app('authentication'));
+        } catch (NotReadableError $e) {
+            Logger::error(
+                new IcingaException('Cannot load user backend configuration. An exception was thrown:', $e)
+            );
+        }
+
+        return $this;
+    }
+
     /**
      * Detect the timezone
      *

library/Icinga/Application/Cli.php

@@ -43,6 +43,7 @@ class Cli extends ApplicationBootstrap
             ->setupLogger()
             ->setupResourceFactory()
             ->setupModuleManager()
+            ->setupUserBackendFactory()
             ->loadSetupModuleIfNecessary();
     }
 

library/Icinga/Application/Web.php

@@ -99,6 +99,7 @@ class Web extends ApplicationBootstrap
             ->setupZendMvc()
             ->setupFormNamespace()
             ->setupModuleManager()
+            ->setupUserBackendFactory()
             ->loadSetupModuleIfNecessary()
             ->loadEnabledModules()
             ->setupRoute()

library/Icinga/Authentication/User/UserBackend.php

@@ -9,11 +9,12 @@ use Icinga\Application\Icinga;
 use Icinga\Data\ConfigObject;
 use Icinga\Data\ResourceFactory;
 use Icinga\Exception\ConfigurationError;
+use Icinga\Util\ConfigAwareFactory;
 
 /**
  * Factory for user backends
  */
-class UserBackend
+class UserBackend implements ConfigAwareFactory
 {
     /**
      * The default user backend types provided by Icinga Web 2
@@ -34,6 +35,48 @@ class UserBackend
      */
     protected static $customBackends;
 
+    /**
+     * User backend configuration
+     *
+     * @var Config
+     */
+    private static $backends;
+
+    /**
+     * Set user backend configuration
+     *
+     * @param   Config  $config
+     */
+    public static function setConfig($config)
+    {
+        self::$backends = $config;
+    }
+
+    /**
+     * Return the configuration of all existing user backends
+     *
+     * @return  Config
+     */
+    public static function getBackendConfigs()
+    {
+        self::assertBackendsExist();
+        return self::$backends;
+    }
+
+    /**
+     * Check if any user backends exist. If not, throw an error.
+     *
+     * @throws  ConfigurationError
+     */
+    private static function assertBackendsExist()
+    {
+        if (self::$backends === null) {
+            throw new ConfigurationError(
+                'User backends not set up. Please contact your Icinga Web administrator'
+            );
+        }
+    }
+
     /**
      * Register all custom user backends from all loaded modules
      */
@@ -110,9 +153,9 @@ class UserBackend
     public static function create($name, ConfigObject $backendConfig = null)
     {
         if ($backendConfig === null) {
-            $authConfig = Config::app('authentication');
-            if ($authConfig->hasSection($name)) {
-                $backendConfig = $authConfig->getSection($name);
+            self::assertBackendsExist();
+            if (self::$backends->hasSection($name)) {
+                $backendConfig = self::$backends->getSection($name);
             } else {
                 throw new ConfigurationError('User backend "%s" does not exist', $name);
             }