From b582630715a0a671f35f507b3cd36569c3b504b6 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 4b361149b30..2f8b46ad772 100644
--- a/core/Migrations/Version19000Date20200211083441.php
+++ b/core/Migrations/Version19000Date20200211083441.php
@@ -35,7 +35,7 @@ class Version19000Date20200211083441 extends SimpleMigrationStep {
 			]);
 			$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 00000000000..199af8cc0aa
--- /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 7c44d954223..11e04fe94bb 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -1365,6 +1365,7 @@ return array(
     'OC\\Core\\Migrations\\Version30000Date20240429122720' => $baseDir . '/core/Migrations/Version30000Date20240429122720.php',
     'OC\\Core\\Migrations\\Version30000Date20240708160048' => $baseDir . '/core/Migrations/Version30000Date20240708160048.php',
     'OC\\Core\\Migrations\\Version30000Date20240717111406' => $baseDir . '/core/Migrations/Version30000Date20240717111406.php',
+    'OC\\Core\\Migrations\\Version30000Date20240814180800' => $baseDir . '/core/Migrations/Version30000Date20240814180800.php',
     'OC\\Core\\Notification\\CoreNotifier' => $baseDir . '/core/Notification/CoreNotifier.php',
     'OC\\Core\\ResponseDefinitions' => $baseDir . '/core/ResponseDefinitions.php',
     'OC\\Core\\Service\\LoginFlowV2Service' => $baseDir . '/core/Service/LoginFlowV2Service.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index 63fa40d39bf..37bdb21c0d5 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -1398,6 +1398,7 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
         'OC\\Core\\Migrations\\Version30000Date20240429122720' => __DIR__ . '/../../..' . '/core/Migrations/Version30000Date20240429122720.php',
         'OC\\Core\\Migrations\\Version30000Date20240708160048' => __DIR__ . '/../../..' . '/core/Migrations/Version30000Date20240708160048.php',
         'OC\\Core\\Migrations\\Version30000Date20240717111406' => __DIR__ . '/../../..' . '/core/Migrations/Version30000Date20240717111406.php',
+        'OC\\Core\\Migrations\\Version30000Date20240814180800' => __DIR__ . '/../../..' . '/core/Migrations/Version30000Date20240814180800.php',
         'OC\\Core\\Notification\\CoreNotifier' => __DIR__ . '/../../..' . '/core/Notification/CoreNotifier.php',
         'OC\\Core\\ResponseDefinitions' => __DIR__ . '/../../..' . '/core/ResponseDefinitions.php',
         'OC\\Core\\Service\\LoginFlowV2Service' => __DIR__ . '/../../..' . '/core/Service/LoginFlowV2Service.php',