From 21593231a0e7de30004a8b4530047b4ad4680db7 Mon Sep 17 00:00:00 2001
From: Daniel Weipert <git@mail.dweipert.de>
Date: Thu, 16 Apr 2026 15:39:21 +0200
Subject: implement against element

---
 src/Controllers/Client/KeyController.php | 34 ++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

(limited to 'src/Controllers/Client/KeyController.php')

diff --git a/src/Controllers/Client/KeyController.php b/src/Controllers/Client/KeyController.php
index 5e3245b..47f8933 100644
--- a/src/Controllers/Client/KeyController.php
+++ b/src/Controllers/Client/KeyController.php
@@ -2,7 +2,9 @@
 
 namespace App\Controllers\Client;
 
+use App\App;
 use App\Database;
+use App\Models\Device;
 use App\Models\User;
 use App\Support\RequestValidator;
 use Matrix\Responses\ClientKeysUploadPostResponse;
@@ -93,10 +95,38 @@ class KeyController
     $deviceKeys = $body["device_keys"];
     $timeout = $body["timeout"] ?? 10000;
 
-    foreach ($deviceKeys as $keysUserId => $deviceIds) {}
+    $downloadedDeviceKeys = [];
+    foreach ($deviceKeys as $keysUserId => $deviceIds) {
+      foreach ($deviceIds as $deviceId) {
+        $result = Database::getInstance()
+          ->query("select * from device_keys where user_id=:user_id and device_id=:device_id", [
+            "user_id" => $keysUserId,
+            "device_id" => $deviceId,
+          ])
+          ->fetch();
 
+        $device = Device::fetch($deviceId, $keysUserId);
+        
+        $downloadedDeviceKeys[$keysUserId][$deviceId] = [
+          "algorithms" => $result["supported_algorithms"],
+          "keys" => $result["keys"],
+          "signatures" => $result["signatures"],
+          "device_id" => $result["device_id"],
+          "user_id" => $result["user_id"],
+          "unsigned" => [
+            "device_display_name" => $device->getName(),
+          ],
+        ];
+      }
+    }
+
+    // apply timeout
+    if ($timeout > 0) {
+      sleep(intval(($timeout / 1000) - App::getExectionTime()));     
+    }
+    
     return new JsonResponse([
-      "device_keys" => [],
+      "device_keys" => empty($downloadedDeviceKeys) ? new \stdClass() : $downloadedDeviceKeys,
     ]);
   }
 
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