IniUserGroupBackend: Extend Repository and implement UserGroupBackendInterface

Note that it was necessary to change the structure of ini files providing
the membership information. They need to be structured like our db
table rows now.

refs #8826

library/Icinga/Authentication/UserGroup/IniUserGroupBackend.php

@@ -3,61 +3,84 @@
 
 namespace Icinga\Authentication\UserGroup;
 
-use Icinga\Application\Config;
-use Icinga\Exception\ConfigurationError;
+use Icinga\Repository\Repository;
 use Icinga\User;
 use Icinga\Util\String;
 
-/**
- * INI user group backend
- */
-class IniUserGroupBackend extends UserGroupBackend
+class IniUserGroupBackend extends Repository implements UserGroupBackendInterface
 {
     /**
-     * Config
+     * The query columns being provided
      *
-     * @var Config
+     * @var array
      */
-    private $config;
+    protected $queryColumns = array(
+        'groups' => array(
+            'group'         => 'name',
+            'group_name'    => 'name',
+            'parent'        => 'parent',
+            'parent_name'   => 'parent',
+            'created_at'    => 'ctime',
+            'last_modified' => 'mtime',
+            'users'
+        )
+    );
 
     /**
-     * Create a new INI user group backend
+     * The columns which are not permitted to be queried
      *
-     * @param Config $config
+     * @var array
      */
-    public function __construct(Config $config)
-    {
-        $this->config = $config;
-    }
+    protected $filterColumns = array('group', 'parent');
 
     /**
-     * (non-PHPDoc)
-     * @see UserGroupBackend::getMemberships() For the method documentation.
+     * The default sort rules to be applied on a query
+     *
+     * @var array
+     */
+    protected $sortRules = array(
+        'group_name' => array(
+            'columns'   => array(
+                'group_name',
+                'parent_name'
+            )
+        )
+    );
+
+    /**
+     * Return the groups the given user is a member of
+     *
+     * @param   User    $user
+     *
+     * @return  array
      */
     public function getMemberships(User $user)
     {
-        $username = strtolower($user->getUsername());
+        $result = $this->select()->fetchAll();
+
         $groups = array();
-        foreach ($this->config as $name => $section) {
-            if (empty($section->users)) {
-                throw new ConfigurationError(
-                    'Membership section \'%s\' in \'%s\' is missing the \'users\' section',
-                    $name,
-                    $this->config->getConfigFile()
-                );
-            }
-            if (empty($section->groups)) {
-                throw new ConfigurationError(
-                    'Membership section \'%s\' in \'%s\' is missing the \'groups\' section',
-                    $name,
-                    $this->config->getConfigFile()
-                );
-            }
-            $users = array_map('strtolower', String::trimSplit($section->users));
-            if (in_array($username, $users)) {
-                $groups = array_merge($groups, array_diff(String::trimSplit($section->groups), $groups));
+        foreach ($result as $group) {
+            if ($group->group_name) { // TODO: Can we set this somehow automatically to the section's name??
+                $groups[$group->group_name] = $group->parent_name;
             }
         }
-        return $groups;
+
+        $username = strtolower($user->getUsername());
+        $memberships = array();
+        foreach ($result as $group) {
+            if ($group->group_name && $group->users) {
+                $users = array_map('strtolower', String::trimSplit($group->users));
+                if (! in_array($group->group_name, $memberships) && in_array($username, $users)) {
+                    $memberships[] = $group->group_name;
+                    $parent = $groups[$group->group_name];
+                    while ($parent !== null) {
+                        $memberships[] = $parent;
+                        $parent = isset($groups[$parent]) ? $groups[$parent] : null;
+                    }
+                }
+            }
+        }
+
+        return $memberships;
     }
 }