Do not copy skeleton on avatar access

Fixes #22119

Just try to get the folder of the user. If it is not there a
NotFoundException will be thrown. Which will be handled by the avatar
endpoint.

lib/private/avatarmanager.php

@@ -26,6 +26,7 @@
 
 namespace OC;
 
+use OCP\Files\Folder;
 use OCP\IAvatarManager;
 use OCP\IUserManager;
 use OCP\Files\IRootFolder;
@@ -45,6 +46,13 @@ class AvatarManager implements IAvatarManager {
 	/** @var IL10N */
 	private $l;
 
+	/**
+	 * AvatarManager constructor.
+	 *
+	 * @param IUserManager $userManager
+	 * @param IRootFolder $rootFolder
+	 * @param IL10N $l
+	 */
 	public function __construct(
 			IUserManager $userManager,
 			IRootFolder $rootFolder,
@@ -57,7 +65,7 @@ class AvatarManager implements IAvatarManager {
 	/**
 	 * return a user specific instance of \OCP\IAvatar
 	 * @see \OCP\IAvatar
-	 * @param string $user the ownCloud user id
+	 * @param string $userId the ownCloud user id
 	 * @return \OCP\IAvatar
 	 * @throws \Exception In case the username is potentially dangerous
 	 */
@@ -66,6 +74,16 @@ class AvatarManager implements IAvatarManager {
 		if (is_null($user)) {
 			throw new \Exception('user does not exist');
 		}
-		return new Avatar($this->rootFolder->getUserFolder($userId)->getParent(), $this->l, $user);
+
+		/*
+		 * Fix for #22119
+		 * Basically we do not want to copy the skeleton folder
+		 */
+		\OC\Files\Filesystem::initMountPoints($userId);
+		$dir = '/' . $userId;
+		/** @var Folder $folder */
+		$folder = $this->rootFolder->get($dir);
+
+		return new Avatar($folder, $this->l, $user);
 	}
 }

tests/lib/avatarmanagertest.php

@@ -19,30 +19,32 @@
  *
  */
 use OC\AvatarManager;
-use OCP\Files\IRootFolder;
-use OCP\IUserManager;
+use Test\Traits\UserTrait;
+use Test\Traits\MountProviderTrait;
 
+/**
+ * Class AvatarManagerTest
+ * @group DB
+ */
 class AvatarManagerTest extends \Test\TestCase {
-	/** @var  IRootFolder */
-	private $rootFolder;
+	use UserTrait;
+	use MountProviderTrait;
 
-	/** @var  AvatarManager */
+	/** @var AvatarManager */
 	private $avatarManager;
 
-	/** @var  IUserManager */
-	private $userManager;
+	/** @var \OC\Files\Storage\Temporary */
+	private $storage;
 
 	public function setUp() {
 		parent::setUp();
 
-		$this->rootFolder = $this->getMock('\OCP\Files\IRootFolder');
-		$this->userManager = $this->getMock('\OCP\IUserManager');
-		$l = $this->getMock('\OCP\IL10N');
-		$l->method('t')->will($this->returnArgument(0));
-		$this->avatarManager = new \OC\AvatarManager(
-				$this->userManager,
-				$this->rootFolder,
-				$l);;
+		$this->createUser('valid-user', 'valid-user');
+
+		$this->storage = new \OC\Files\Storage\Temporary();
+		$this->registerMount('valid-user', $this->storage, '/valid-user/');
+
+		$this->avatarManager = \OC::$server->getAvatarManager();
 	}
 
 	/**
@@ -54,23 +56,10 @@ class AvatarManagerTest extends \Test\TestCase {
 	}
 
 	public function testGetAvatarValidUser() {
-		$this->userManager->expects($this->once())
-			->method('get')
-			->with('validUser')
-			->willReturn(true);
-
-		$folder = $this->getMock('\OCP\Files\Folder');
-		$this->rootFolder->expects($this->once())
-			->method('getUserFolder')
-			->with('validUser')
-			->willReturn($folder);
-
-		$folder->expects($this->once())
-			->method('getParent')
-			->will($this->returnSelf());
-
-		$this->avatarManager->getAvatar('validUser');
+		$avatar = $this->avatarManager->getAvatar('valid-user');
 
+		$this->assertInstanceOf('\OCP\IAvatar', $avatar);
+		$this->assertFalse($this->storage->file_exists('files'));
 	}
 
 }