Roles Folder

index.php

@@ -1,6 +1,8 @@
 <?php
 
 use Collections\HomeCollection;
+use Collections\RolesCollection;
+use Principal\RolesBackend;
 use Sabre\DAV;
 use Dotenv\Dotenv;
 
@@ -10,18 +12,17 @@ require 'vendor/autoload.php';
 $dotenv = Dotenv::createImmutable(__DIR__);
 $dotenv->load();
 
-
-$aclPlugin = new \Sabre\DAVACL\Plugin();
-
+$principalBackend = new RolesBackend();
 
 // Set Auth
-$authBackend = new Keycloak\KeycloakAuth($aclPlugin,$_ENV['client_id'], $_ENV['client_secret'], $_ENV['keycloak_token_url'] );
+$authBackend = new Keycloak\KeycloakAuth($principalBackend,$_ENV['client_id'], $_ENV['client_secret'], $_ENV['keycloak_token_url'] );
 $authBackend->setRealm($_ENV['realm']);
 $authPlugin = new DAV\Auth\Plugin($authBackend);
 
+$path = $_ENV['users_path'];
 
 // The server object is responsible for making sense out of the WebDAV protocol
-$server = new DAV\Server([new HomeCollection($authPlugin, $_ENV['users_path'])]);
+$server = new DAV\Server([new HomeCollection($authPlugin, $path), new RolesCollection($principalBackend, $path)]);
 
 // If your server is not on your webroot, make sure the following line has the
 // correct information
@@ -34,12 +35,12 @@ $lockPlugin = new DAV\Locks\Plugin($lockBackend);
 $server->addPlugin($lockPlugin);
 
 
+$principalPlugin = new Sabre\DAVACL\Plugin($principalBackend);
 
-// This ensures that we get a pretty index in the browser, but it is
-// optional.
-$server->addPlugin(new DAV\Browser\Plugin());
 $server->addPlugin($authPlugin);
-$server->addPlugin($aclPlugin);
+$server->addPlugin($principalPlugin);
+$server->addPlugin(new DAV\Browser\Plugin());
+
 
 // All we need to do now, is to fire up the server
 $server->start();

src/Collections/HomeCollection.php

@@ -12,13 +12,13 @@ class HomeCollection extends Collection
     private $userPath;
 
 
-    public function __construct(AuthPlugin $authPlugin, $userPath)
+    public function __construct(AuthPlugin $authPlugin, string $userPath)
     {
         $this->plugin = $authPlugin;
         $this->userPath = $userPath;
     }
 
-    public function getChildren()
+    public function getChildren(): array
     {
         $principal = $this->plugin->getCurrentPrincipal();
         $username = explode("/", $principal)[1];
@@ -31,7 +31,7 @@ class HomeCollection extends Collection
         return [new Directory($path.$username, $username)];
     }
 
-    public function getName()
+    public function getName(): string
     {
         return "Home";
     }

src/Collections/RolesCollection.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Collections;
+
+use Principal\RolesBackend;
+use Sabre\DAV\Collection;
+use Sabre\DAV\FSExt\Directory as SabreDirectory;
+
+class RolesCollection extends Collection {
+    
+    private RolesBackend $principalBackend;
+    private $dataRoot;
+
+    public function __construct(RolesBackend $principal_backend, string $dataRoot)
+    {
+        $this->$dataRoot = $dataRoot; 
+        $this->principalBackend = $principal_backend;
+    }
+
+    public function getChildren() : array { 
+        $path = $this->dataRoot;
+        $dirs = [];
+        foreach ($this->principalBackend->roles as $role) { 
+            if (!is_dir($path . 'public/' . $role)){
+                mkdir($path . 'public/' . $role, 0777, true);
+            }
+            $dirs[] = new SabreDirectory($path . 'public/' . $role, $role);
+        }
+
+        return $dirs;
+    } 
+
+    public function getName() : string
+    {
+        return "Groups";
+    }
+
+}

src/Keycloak/KeycloakAuth.php

@@ -2,19 +2,21 @@
 
 namespace Keycloak;
 
+use Principal\RolesBackend;
 use Sabre\DAV\Auth\Backend\AbstractBasic;
-use Sabre\DAVACL\Plugin as AclPlugin;
 
 class KeycloakAuth extends AbstractBasic
 {
-    private $aclPlugin;
-    private $client_id;
-    private $client_secret;
-    private $keycloakTokenUrl;
 
-    public function __construct(AclPlugin $plugin, string $client_id, string $client_secret, string $keycloakTokenUrl)
+    private RolesBackend $principal_backend;
+    private string $client_id;
+    private string $client_secret;
+    private string $keycloakTokenUrl;
+
+    public function __construct(RolesBackend $principal_backend, string $client_id, 
+	string $client_secret, string $keycloakTokenUrl)
     {
-        $this->aclPlugin = $plugin;
+        $this->principal_backend = $principal_backend;
         $this->client_id = $client_id;
         $this->client_secret = $client_secret;
         $this->keycloakTokenUrl = $keycloakTokenUrl;
@@ -38,17 +40,32 @@ class KeycloakAuth extends AbstractBasic
             ],
         ]);
 
-        curl_exec($curl);
+        $body = curl_exec($curl);
 
         $err = curl_error($curl);
 
         $data = curl_getinfo($curl);
 
+
         curl_close($curl);
 
         if ($err || $data['http_code'] != 200) {
             return false;
         } else {
+	        $x = json_decode($body);
+	        $user_data = json_decode(base64_decode(explode(".",$x->access_token)[1]), true);
+            
+            $resource_data = $user_data["resource_access"];
+            if (is_null($resource_data) || !array_key_exists($this->client_id, $resource_data)) return true;
+
+            $client_data = $resource_data[$this->client_id];
+            if (is_null($client_data)) return true;
+
+            $roles = $client_data["roles"];
+            if (is_null($client_data)) return true;
+
+            $this->principal_backend->setPrincipals($roles);
+
             return true;
         }
 

src/Principal/RolesBackend.php

@@ -4,17 +4,21 @@ namespace Principal;
 
 use Sabre\DAVACL\PrincipalBackend\AbstractBackend;
 
-class CustomBackend extends AbstractBackend
+class RolesBackend extends AbstractBackend
 {
+    public array $roles = [];
+    public array $principals = [];
 
     public function getPrincipalsByPrefix($prefixPath)
     {
-        // TODO: Implement getPrincipalsByPrefix() method.
+       return array_filter(array: $this->principals, callback: function($k) use($prefixPath) {
+           return str_starts_with($prefixPath, $k);
+       }); 
     }
 
     public function getPrincipalByPath($path)
     {
-        // TODO: Implement getPrincipalByPath() method.
+        return $path;
     }
 
     public function updatePrincipal($path, \Sabre\DAV\PropPatch $propPatch)
@@ -34,11 +38,21 @@ class CustomBackend extends AbstractBackend
 
     public function getGroupMembership($principal)
     {
-        // TODO: Implement getGroupMembership() method.
+	if (!str_contains("groups")) {
+		return $this->principals;
+	}
+	else return [$principal];
     }
 
     public function setGroupMemberSet($principal, array $members)
     {
         // TODO: Implement setGroupMemberSet() method.
     }
+
+    public function setPrincipals(array $roles) {
+        $this->roles = $roles;
+        $this->principals = array_map(array: $roles, callback:  function($r) {
+            return "/principals/groups/" . $r;
+        });
+    }
 }