1 files changed, 77 insertions, 0 deletions
diff --git a/apps/files_external/lib/Lib/Auth/Password/UserProvided.php b/apps/files_external/lib/Lib/Auth/Password/UserProvided.php
new file mode 100644
index 00000000000..b158392f6eb
--- /dev/null
+++ b/apps/files_external/lib/Lib/Auth/Password/UserProvided.php
@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2018-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2015 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+namespace OCA\Files_External\Lib\Auth\Password;
+
+use OCA\Files_External\Lib\Auth\AuthMechanism;
+use OCA\Files_External\Lib\Auth\IUserProvided;
+use OCA\Files_External\Lib\DefinitionParameter;
+use OCA\Files_External\Lib\InsufficientDataForMeaningfulAnswerException;
+use OCA\Files_External\Lib\StorageConfig;
+use OCA\Files_External\Service\BackendService;
+use OCP\IL10N;
+use OCP\IUser;
+use OCP\Security\ICredentialsManager;
+
+/**
+ * User provided Username and Password
+ */
+class UserProvided extends AuthMechanism implements IUserProvided {
+	public const CREDENTIALS_IDENTIFIER_PREFIX = 'password::userprovided/';
+
+	public function __construct(
+		IL10N $l,
+		protected ICredentialsManager $credentialsManager,
+	) {
+		$this
+			->setIdentifier('password::userprovided')
+			->setVisibility(BackendService::VISIBILITY_ADMIN)
+			->setScheme(self::SCHEME_PASSWORD)
+			->setText($l->t('Manually entered, store in database'))
+			->addParameters([
+				(new DefinitionParameter('user', $l->t('Login')))
+					->setFlag(DefinitionParameter::FLAG_USER_PROVIDED),
+				(new DefinitionParameter('password', $l->t('Password')))
+					->setType(DefinitionParameter::VALUE_PASSWORD)
+					->setFlag(DefinitionParameter::FLAG_USER_PROVIDED),
+			]);
+	}
+
+	private function getCredentialsIdentifier($storageId) {
+		return self::CREDENTIALS_IDENTIFIER_PREFIX . $storageId;
+	}
+
+	public function saveBackendOptions(IUser $user, $mountId, array $options) {
+		if ($options['password'] === DefinitionParameter::UNMODIFIED_PLACEHOLDER) {
+			$oldCredentials = $this->credentialsManager->retrieve($user->getUID(), $this->getCredentialsIdentifier($mountId));
+			$options['password'] = $oldCredentials['password'];
+		}
+
+		$this->credentialsManager->store($user->getUID(), $this->getCredentialsIdentifier($mountId), [
+			'user' => $options['user'], // explicitly copy the fields we want instead of just passing the entire $options array
+			'password' => $options['password'] // this way we prevent users from being able to modify any other field
+		]);
+	}
+
+	/**
+	 * @return void
+	 */
+	public function manipulateStorageConfig(StorageConfig &$storage, ?IUser $user = null) {
+		if (!isset($user)) {
+			throw new InsufficientDataForMeaningfulAnswerException('No credentials saved');
+		}
+		$uid = $user->getUID();
+		$credentials = $this->credentialsManager->retrieve($uid, $this->getCredentialsIdentifier($storage->getId()));
+
+		if (!isset($credentials)) {
+			throw new InsufficientDataForMeaningfulAnswerException('No credentials saved');
+		}
+
+		$storage->setBackendOption('user', $credentials['user']);
+		$storage->setBackendOption('password', $credentials['password']);
+	}
+}