Merge pull request #52041 from nextcloud/backport/52013/stable29

[stable29] fix: Handle missing share providers when promoting reshares

Author: susnux

lib/private/Share20/Manager.php

@@ -1215,7 +1215,12 @@ protected function promoteReshares(IShare $share): void {
 
 		foreach ($userIds as $userId) {
 			foreach ($shareTypes as $shareType) {
-				$provider = $this->factory->getProviderForType($shareType);
+				try {
+					$provider = $this->factory->getProviderForType($shareType);
+				} catch (ProviderException $e) {
+					continue;
+				}
+
 				if ($node instanceof Folder) {
 					/* We need to get all shares by this user to get subshares */
 					$shares = $provider->getSharesBy($userId, $shareType, null, false, -1, 0);

tests/lib/Share20/ManagerTest.php

@@ -2273,7 +2273,7 @@ public function testLinkCreateChecksReadOnly() {
 
 	public function testPathCreateChecksContainsSharedMount() {
 		$this->expectException(\InvalidArgumentException::class);
-		$this->expectExceptionMessage('You cannot share a folder that contains other shares');
+		$this->expectExceptionMessage('Path contains files shared with you');
 
 		$path = $this->createMock(Folder::class);
 		$path->method('getPath')->willReturn('path');