2 files changed, 12 insertions, 0 deletions
diff --git a/apps/files_external/lib/Lib/Auth/Password/UserGlobalAuth.php b/apps/files_external/lib/Lib/Auth/Password/UserGlobalAuth.php
index d43c4327b6b..d91ebba2744 100644
--- a/apps/files_external/lib/Lib/Auth/Password/UserGlobalAuth.php
+++ b/apps/files_external/lib/Lib/Auth/Password/UserGlobalAuth.php
@@ -29,6 +29,7 @@ declare(strict_types=1);
 namespace OCA\Files_External\Lib\Auth\Password;
 
 use OCA\Files_External\Lib\Auth\AuthMechanism;
+use OCA\Files_External\Lib\DefinitionParameter;
 use OCA\Files_External\Lib\InsufficientDataForMeaningfulAnswerException;
 use OCA\Files_External\Lib\StorageConfig;
 use OCA\Files_External\Service\BackendService;
@@ -61,6 +62,12 @@ class UserGlobalAuth extends AuthMechanism {
 		if (!isset($backendOptions['user']) && !isset($backendOptions['password'])) {
 			return;
 		}
+
+		if ($backendOptions['password'] === DefinitionParameter::UNMODIFIED_PLACEHOLDER) {
+			$oldCredentials = $this->credentialsManager->retrieve($user->getUID(), self::CREDENTIALS_IDENTIFIER);
+			$backendOptions['password'] = $oldCredentials['password'];
+		}
+
 		// make sure we're not setting any unexpected keys
 		$credentials = [
 			'user' => $backendOptions['user'],
diff --git a/apps/files_external/lib/Lib/Auth/Password/UserProvided.php b/apps/files_external/lib/Lib/Auth/Password/UserProvided.php
index 7fcbdb38336..61aa208e78d 100644
--- a/apps/files_external/lib/Lib/Auth/Password/UserProvided.php
+++ b/apps/files_external/lib/Lib/Auth/Password/UserProvided.php
@@ -65,6 +65,11 @@ class UserProvided extends AuthMechanism implements IUserProvided {
 	}
 
 	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