From 4bd1937c9156782f3c82716cc21896a81bfc4bfe Mon Sep 17 00:00:00 2001
From: Ferdinand Thiessen <opensource@fthiessen.de>
Date: Wed, 14 Aug 2024 18:07:51 +0200
Subject: [PATCH] fix(webauthn): Increase database column for public key id

* Resolves https://github.com/nextcloud/server/issues/34476

There is no maximum length defined in the standard,
most common the length is between 128 and 200 characters,
but as we store it not in plain data but base64 encoded the length can grow about 1/3.
We had a regression with 'Nitrokey 3' which created IDs with 196 byte length -> 262 bytes encoded base64.
So to be save we increase the size to 512 bytes.

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>
---
 .../Version19000Date20200211083441.php        |  2 +-
 .../Version30000Date20240814180800.php        | 37 +++++++++++++++++++
 lib/composer/composer/autoload_classmap.php   |  1 +
 lib/composer/composer/autoload_static.php     |  1 +
 4 files changed, 40 insertions(+), 1 deletion(-)
 create mode 100644 core/Migrations/Version30000Date20240814180800.php

diff --git a/core/Migrations/Version19000Date20200211083441.php b/core/Migrations/Version19000Date20200211083441.php
index 4e5c48a3b881f..c1cfca2c1b709 100644
--- a/core/Migrations/Version19000Date20200211083441.php
+++ b/core/Migrations/Version19000Date20200211083441.php
@@ -53,7 +53,7 @@ public function changeSchema(IOutput $output, Closure $schemaClosure, array $opt
 			]);
 			$table->addColumn('public_key_credential_id', 'string', [
 				'notnull' => true,
-				'length' => 255
+				'length' => 512
 			]);
 			$table->addColumn('data', 'text', [
 				'notnull' => true,
diff --git a/core/Migrations/Version30000Date20240814180800.php b/core/Migrations/Version30000Date20240814180800.php
new file mode 100644
index 0000000000000..199af8cc0aa2f
--- /dev/null
+++ b/core/Migrations/Version30000Date20240814180800.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OC\Core\Migrations;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+class Version30000Date20240814180800 extends SimpleMigrationStep {
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		$table = $schema->getTable('webauthn');
+		$column = $table->getColumn('public_key_credential_id');
+
+		/**
+		 * There is no maximum length defined in the standard,
+		 * most common the length is between 128 and 200 characters,
+		 * but as we store it not in plain data but base64 encoded the length can grow about 1/3.
+		 * We had a regression with 'Nitrokey 3' which created IDs with 196 byte length -> 262 bytes encoded base64.
+		 * So to be save we increase the size to 512 bytes.
+		 */
+		if ($column->getLength() < 512) {
+			$column->setLength(512);
+		}
+
+		return $schema;
+	}
+}
diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
index a09bbb25038a6..4872a042b53fd 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -1279,6 +1279,7 @@
     'OC\\Core\\Migrations\\Version29000Date20240124132201' => $baseDir . '/core/Migrations/Version29000Date20240124132201.php',
     'OC\\Core\\Migrations\\Version29000Date20240124132202' => $baseDir . '/core/Migrations/Version29000Date20240124132202.php',
     'OC\\Core\\Migrations\\Version29000Date20240131122720' => $baseDir . '/core/Migrations/Version29000Date20240131122720.php',
+    'OC\\Core\\Migrations\\Version30000Date20240814180800' => $baseDir . '/core/Migrations/Version30000Date20240814180800.php',
     'OC\\Core\\Notification\\CoreNotifier' => $baseDir . '/core/Notification/CoreNotifier.php',
     'OC\\Core\\Service\\LoginFlowV2Service' => $baseDir . '/core/Service/LoginFlowV2Service.php',
     'OC\\DB\\Adapter' => $baseDir . '/lib/private/DB/Adapter.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index 16fb699964c46..4dba8372083df 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -1312,6 +1312,7 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
         'OC\\Core\\Migrations\\Version29000Date20240124132201' => __DIR__ . '/../../..' . '/core/Migrations/Version29000Date20240124132201.php',
         'OC\\Core\\Migrations\\Version29000Date20240124132202' => __DIR__ . '/../../..' . '/core/Migrations/Version29000Date20240124132202.php',
         'OC\\Core\\Migrations\\Version29000Date20240131122720' => __DIR__ . '/../../..' . '/core/Migrations/Version29000Date20240131122720.php',
+        'OC\\Core\\Migrations\\Version30000Date20240814180800' => __DIR__ . '/../../..' . '/core/Migrations/Version30000Date20240814180800.php',
         'OC\\Core\\Notification\\CoreNotifier' => __DIR__ . '/../../..' . '/core/Notification/CoreNotifier.php',
         'OC\\Core\\Service\\LoginFlowV2Service' => __DIR__ . '/../../..' . '/core/Service/LoginFlowV2Service.php',
         'OC\\DB\\Adapter' => __DIR__ . '/../../..' . '/lib/private/DB/Adapter.php',