occ encryption:encrypt-all should not auto-enable user-key encryption

changelog/unreleased/40702

@@ -0,0 +1,7 @@
+Change: Do not auto-enable user-key ecryption
+
+Executing occ encryption:encrypt-all will no longer auto-enable user-key encryption.
+
+https://github.com/owncloud/core/pull/40702
+https://github.com/owncloud/enterprise/issues/4939
+https://doc.owncloud.com/docs/next/server_release_notes.html#deprecation-note-for-user-key-storage-encryption

core/Command/Encryption/EncryptAll.php

@@ -115,10 +115,7 @@ protected function execute(InputInterface $input, OutputInterface $output) {
 		$masterKeyEnabled = $this->config->getAppValue('encryption', 'useMasterKey', '');
 		$userKeyEnabled = $this->config->getAppValue('encryption', 'userSpecificKey', '');
 		if (($masterKeyEnabled === '') && ($userKeyEnabled === '')) {
-			/**
-			 * Enable user specific encryption if nothing is enabled.
-			 */
-			$this->config->setAppValue('encryption', 'userSpecificKey', '1');
+			throw new \Exception('None of the encryption modules is enabled');
 		}
 
 		$output->writeln("\n");

tests/Core/Command/Encryption/EncryptAllTest.php

@@ -71,7 +71,7 @@ protected function setUp(): void {
 		$this->consoleOutput = $this->createMock('Symfony\Component\Console\Output\OutputInterface');
 	}
 
-	public function testEncryptAll() {
+	public function testSingleUserAndTrashbin() {
 		// trash bin needs to be disabled in order to avoid adding dummy files to the users
 		// trash bin which gets deleted during the encryption process
 		$this->appManager->expects($this->once())->method('disableApp')->with('files_trashbin');
@@ -99,12 +99,11 @@ public function testExecute($answer, $askResult) {
 		$this->config->expects($this->any())
 			->method('getAppValue')
 			->willReturnMap([
-				['encryption', 'useMasterKey', '', ''],
+				['encryption', 'useMasterKey', '', '1'], // enabled
 				['encryption', 'userSpecificKey', '', '']
 			]);
-		$this->config->expects($this->once())
-			->method('setAppValue')
-			->willReturn(null);
+		$this->config->expects($this->never())
+			->method('setAppValue');
 
 		if ($answer === 'Y' || $answer === 'y') {
 			$this->encryptionManager->expects($this->once())
@@ -127,7 +126,7 @@ public function dataTestExecute() {
 
 	/**
 	 */
-	public function testExecuteException() {
+	public function testExecuteEncryptionNotEnabled() {
 		$this->expectException(\Exception::class);
 
 		$command = new EncryptAll($this->encryptionManager, $this->appManager, $this->config, $this->questionHelper);
@@ -136,4 +135,20 @@ public function testExecuteException() {
 		$this->encryptionModule->expects($this->never())->method('encryptAll');
 		$this->invokePrivate($command, 'execute', [$this->consoleInput, $this->consoleOutput]);
 	}
+
+	/**
+	 */
+	public function testExecuteEncryptionModuleNotEnabled() {
+		$this->expectException(\Exception::class);
+
+		$command = new EncryptAll($this->encryptionManager, $this->appManager, $this->config, $this->questionHelper);
+		$this->encryptionManager->expects($this->once())->method('isEnabled')->willReturn(true);
+		$this->config->expects($this->any())
+			->method('getAppValue')
+			->willReturnMap([
+				['encryption', 'useMasterKey', '', ''],
+				['encryption', 'userSpecificKey', '', '']
+			]);
+		$this->invokePrivate($command, 'execute', [$this->consoleInput, $this->consoleOutput]);
+	}
 }