nextcloud / server

lib/private/Tagging/TagMapper.php

Indentation +39 added lines, -39 removed lines

@@ -35,46 +35,46 @@
  */
 class TagMapper extends Mapper {
 
-	/**
-	 * Constructor.
-	 *
-	 * @param IDBConnection $db Instance of the Db abstraction layer.
-	 */
-	public function __construct(IDBConnection $db) {
-		parent::__construct($db, 'vcategory', Tag::class);
-	}
+    /**
+     * Constructor.
+     *
+     * @param IDBConnection $db Instance of the Db abstraction layer.
+     */
+    public function __construct(IDBConnection $db) {
+        parent::__construct($db, 'vcategory', Tag::class);
+    }
 
-	/**
-	 * Load tags from the database.
-	 *
-	 * @param array|string $owners The user(s) whose tags we are going to load.
-	 * @param string $type The type of item for which we are loading tags.
-	 * @return array An array of Tag objects.
-	 */
-	public function loadTags($owners, $type) {
-		if(!is_array($owners)) {
-			$owners = [$owners];
-		}
+    /**
+     * Load tags from the database.
+     *
+     * @param array|string $owners The user(s) whose tags we are going to load.
+     * @param string $type The type of item for which we are loading tags.
+     * @return array An array of Tag objects.
+     */
+    public function loadTags($owners, $type) {
+        if(!is_array($owners)) {
+            $owners = [$owners];
+        }
 
-		$sql = 'SELECT `id`, `uid`, `type`, `category` FROM `' . $this->getTableName() . '` '
-			. 'WHERE `uid` IN (' . str_repeat('?,', count($owners)-1) . '?) AND `type` = ? ORDER BY `category`';
-		return $this->findEntities($sql, array_merge($owners, [$type]));
-	}
+        $sql = 'SELECT `id`, `uid`, `type`, `category` FROM `' . $this->getTableName() . '` '
+            . 'WHERE `uid` IN (' . str_repeat('?,', count($owners)-1) . '?) AND `type` = ? ORDER BY `category`';
+        return $this->findEntities($sql, array_merge($owners, [$type]));
+    }
 
-	/**
-	 * Check if a given Tag object already exists in the database.
-	 *
-	 * @param Tag $tag The tag to look for in the database.
-	 * @return bool
-	 */
-	public function tagExists($tag) {
-		$sql = 'SELECT `id`, `uid`, `type`, `category` FROM `' . $this->getTableName() . '` '
-			. 'WHERE `uid` = ? AND `type` = ? AND `category` = ?';
-		try {
-			$this->findEntity($sql, [$tag->getOwner(), $tag->getType(), $tag->getName()]);
-		} catch (DoesNotExistException $e) {
-			return false;
-		}
-		return true;
-	}
+    /**
+     * Check if a given Tag object already exists in the database.
+     *
+     * @param Tag $tag The tag to look for in the database.
+     * @return bool
+     */
+    public function tagExists($tag) {
+        $sql = 'SELECT `id`, `uid`, `type`, `category` FROM `' . $this->getTableName() . '` '
+            . 'WHERE `uid` = ? AND `type` = ? AND `category` = ?';
+        try {
+            $this->findEntity($sql, [$tag->getOwner(), $tag->getType(), $tag->getName()]);
+        } catch (DoesNotExistException $e) {
+            return false;
+        }
+        return true;
+    }
 }

Spacing +4 added lines, -4 removed lines

@@ -52,12 +52,12 @@ 
 	 * @return array An array of Tag objects.
 	 */
 	public function loadTags($owners, $type) {
-		if(!is_array($owners)) {
+		if (!is_array($owners)) {
 			$owners = [$owners];
 		}
 
-		$sql = 'SELECT `id`, `uid`, `type`, `category` FROM `' . $this->getTableName() . '` '
-			. 'WHERE `uid` IN (' . str_repeat('?,', count($owners)-1) . '?) AND `type` = ? ORDER BY `category`';
+		$sql = 'SELECT `id`, `uid`, `type`, `category` FROM `'.$this->getTableName().'` '
+			. 'WHERE `uid` IN ('.str_repeat('?,', count($owners) - 1).'?) AND `type` = ? ORDER BY `category`';
 		return $this->findEntities($sql, array_merge($owners, [$type]));
 	}
 
@@ -68,7 +68,7 @@ 
 	 * @return bool
 	 */
 	public function tagExists($tag) {
-		$sql = 'SELECT `id`, `uid`, `type`, `category` FROM `' . $this->getTableName() . '` '
+		$sql = 'SELECT `id`, `uid`, `type`, `category` FROM `'.$this->getTableName().'` '
 			. 'WHERE `uid` = ? AND `type` = ? AND `category` = ?';
 		try {
 			$this->findEntity($sql, [$tag->getOwner(), $tag->getType(), $tag->getName()]);

lib/private/Tagging/Tag.php

Indentation +47 added lines, -47 removed lines

@@ -38,54 +38,54 @@
  */
 class Tag extends Entity {
 
-	protected $owner;
-	protected $type;
-	protected $name;
+    protected $owner;
+    protected $type;
+    protected $name;
 
-	/**
-	 * Constructor.
-	 *
-	 * @param string $owner The tag's owner
-	 * @param string $type The type of item this tag is used for
-	 * @param string $name The tag's name
-	 */
-	public function __construct($owner = null, $type = null, $name = null) {
-		$this->setOwner($owner);
-		$this->setType($type);
-		$this->setName($name);
-	}
+    /**
+     * Constructor.
+     *
+     * @param string $owner The tag's owner
+     * @param string $type The type of item this tag is used for
+     * @param string $name The tag's name
+     */
+    public function __construct($owner = null, $type = null, $name = null) {
+        $this->setOwner($owner);
+        $this->setType($type);
+        $this->setName($name);
+    }
 
-	/**
-	 * Transform a database columnname to a property
-	 *
-	 * @param string $columnName the name of the column
-	 * @return string the property name
-	 * @todo migrate existing database columns to the correct names
-	 * to be able to drop this direct mapping
-	 */
-	public function columnToProperty($columnName){
-		if ($columnName === 'category') {
-		    return 'name';
-		} elseif ($columnName === 'uid') {
-		    return 'owner';
-		} else {
-		    return parent::columnToProperty($columnName);
-		}
-	}
+    /**
+     * Transform a database columnname to a property
+     *
+     * @param string $columnName the name of the column
+     * @return string the property name
+     * @todo migrate existing database columns to the correct names
+     * to be able to drop this direct mapping
+     */
+    public function columnToProperty($columnName){
+        if ($columnName === 'category') {
+            return 'name';
+        } elseif ($columnName === 'uid') {
+            return 'owner';
+        } else {
+            return parent::columnToProperty($columnName);
+        }
+    }
 
-	/**
-	 * Transform a property to a database column name
-	 *
-	 * @param string $property the name of the property
-	 * @return string the column name
-	 */
-	public function propertyToColumn($property){
-		if ($property === 'name') {
-		    return 'category';
-		} elseif ($property === 'owner') {
-		    return 'uid';
-		} else {
-		    return parent::propertyToColumn($property);
-		}
-	}
+    /**
+     * Transform a property to a database column name
+     *
+     * @param string $property the name of the property
+     * @return string the column name
+     */
+    public function propertyToColumn($property){
+        if ($property === 'name') {
+            return 'category';
+        } elseif ($property === 'owner') {
+            return 'uid';
+        } else {
+            return parent::propertyToColumn($property);
+        }
+    }
 }

lib/private/Tags.php

Indentation +805 added lines, -805 removed lines

@@ -54,809 +54,809 @@
 
 class Tags implements ITags {
 
-	/**
-	 * Tags
-	 *
-	 * @var array
-	 */
-	private $tags = [];
-
-	/**
-	 * Used for storing objectid/categoryname pairs while rescanning.
-	 *
-	 * @var array
-	 */
-	private static $relations = [];
-
-	/**
-	 * Type
-	 *
-	 * @var string
-	 */
-	private $type;
-
-	/**
-	 * User
-	 *
-	 * @var string
-	 */
-	private $user;
-
-	/**
-	 * Are we including tags for shared items?
-	 *
-	 * @var bool
-	 */
-	private $includeShared = false;
-
-	/**
-	 * The current user, plus any owners of the items shared with the current
-	 * user, if $this->includeShared === true.
-	 *
-	 * @var array
-	 */
-	private $owners = [];
-
-	/**
-	 * The Mapper we're using to communicate our Tag objects to the database.
-	 *
-	 * @var TagMapper
-	 */
-	private $mapper;
-
-	/**
-	 * The sharing backend for objects of $this->type. Required if
-	 * $this->includeShared === true to determine ownership of items.
-	 *
-	 * @var \OCP\Share_Backend
-	 */
-	private $backend;
-
-	const TAG_TABLE = '*PREFIX*vcategory';
-	const RELATION_TABLE = '*PREFIX*vcategory_to_object';
-
-	/**
-	 * Constructor.
-	 *
-	 * @param TagMapper $mapper Instance of the TagMapper abstraction layer.
-	 * @param string $user The user whose data the object will operate on.
-	 * @param string $type The type of items for which tags will be loaded.
-	 * @param array $defaultTags Tags that should be created at construction.
-	 * @param boolean $includeShared Whether to include tags for items shared with this user by others.
-	 */
-	public function __construct(TagMapper $mapper, $user, $type, $defaultTags = [], $includeShared = false) {
-		$this->mapper = $mapper;
-		$this->user = $user;
-		$this->type = $type;
-		$this->includeShared = $includeShared;
-		$this->owners = [$this->user];
-		if ($this->includeShared) {
-			$this->owners = array_merge($this->owners, \OC\Share\Share::getSharedItemsOwners($this->user, $this->type, true));
-			$this->backend = \OC\Share\Share::getBackend($this->type);
-		}
-		$this->tags = $this->mapper->loadTags($this->owners, $this->type);
-
-		if(count($defaultTags) > 0 && count($this->tags) === 0) {
-			$this->addMultiple($defaultTags, true);
-		}
-	}
-
-	/**
-	 * Check if any tags are saved for this type and user.
-	 *
-	 * @return boolean
-	 */
-	public function isEmpty() {
-		return count($this->tags) === 0;
-	}
-
-	/**
-	 * Returns an array mapping a given tag's properties to its values:
-	 * ['id' => 0, 'name' = 'Tag', 'owner' = 'User', 'type' => 'tagtype']
-	 *
-	 * @param string $id The ID of the tag that is going to be mapped
-	 * @return array|false
-	 */
-	public function getTag($id) {
-		$key = $this->getTagById($id);
-		if ($key !== false) {
-			return $this->tagMap($this->tags[$key]);
-		}
-		return false;
-	}
-
-	/**
-	 * Get the tags for a specific user.
-	 *
-	 * This returns an array with maps containing each tag's properties:
-	 * [
-	 * 	['id' => 0, 'name' = 'First tag', 'owner' = 'User', 'type' => 'tagtype'],
-	 * 	['id' => 1, 'name' = 'Shared tag', 'owner' = 'Other user', 'type' => 'tagtype'],
-	 * ]
-	 *
-	 * @return array
-	 */
-	public function getTags() {
-		if(!count($this->tags)) {
-			return [];
-		}
-
-		usort($this->tags, function($a, $b) {
-			return strnatcasecmp($a->getName(), $b->getName());
-		});
-		$tagMap = [];
-
-		foreach($this->tags as $tag) {
-			if($tag->getName() !== ITags::TAG_FAVORITE) {
-				$tagMap[] = $this->tagMap($tag);
-			}
-		}
-		return $tagMap;
-
-	}
-
-	/**
-	 * Return only the tags owned by the given user, omitting any tags shared
-	 * by other users.
-	 *
-	 * @param string $user The user whose tags are to be checked.
-	 * @return array An array of Tag objects.
-	 */
-	public function getTagsForUser($user) {
-		return array_filter($this->tags,
-			function($tag) use($user) {
-				return $tag->getOwner() === $user;
-			}
-		);
-	}
-
-	/**
-	 * Get the list of tags for the given ids.
-	 *
-	 * @param array $objIds array of object ids
-	 * @return array|boolean of tags id as key to array of tag names
-	 * or false if an error occurred
-	 */
-	public function getTagsForObjects(array $objIds) {
-		$entries = [];
-
-		try {
-			$conn = \OC::$server->getDatabaseConnection();
-			$chunks = array_chunk($objIds, 900, false);
-			foreach ($chunks as $chunk) {
-				$result = $conn->executeQuery(
-					'SELECT `category`, `categoryid`, `objid` ' .
-					'FROM `' . self::RELATION_TABLE . '` r, `' . self::TAG_TABLE . '` ' .
-					'WHERE `categoryid` = `id` AND `uid` = ? AND r.`type` = ? AND `objid` IN (?)',
-					[$this->user, $this->type, $chunk],
-					[null, null, IQueryBuilder::PARAM_INT_ARRAY]
-				);
-				while ($row = $result->fetch()) {
-					$objId = (int)$row['objid'];
-					if (!isset($entries[$objId])) {
-						$entries[$objId] = [];
-					}
-					$entries[$objId][] = $row['category'];
-				}
-				if ($result === null) {
-					\OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
-					return false;
-				}
-			}
-		} catch(\Exception $e) {
-			\OC::$server->getLogger()->logException($e, [
-				'message' => __METHOD__,
-				'level' => ILogger::ERROR,
-				'app' => 'core',
-			]);
-			return false;
-		}
-
-		return $entries;
-	}
-
-	/**
-	 * Get the a list if items tagged with $tag.
-	 *
-	 * Throws an exception if the tag could not be found.
-	 *
-	 * @param string $tag Tag id or name.
-	 * @return array|false An array of object ids or false on error.
-	 * @throws \Exception
-	 */
-	public function getIdsForTag($tag) {
-		$result = null;
-		$tagId = false;
-		if(is_numeric($tag)) {
-			$tagId = $tag;
-		} elseif(is_string($tag)) {
-			$tag = trim($tag);
-			if($tag === '') {
-				\OCP\Util::writeLog('core', __METHOD__.', Cannot use empty tag names', ILogger::DEBUG);
-				return false;
-			}
-			$tagId = $this->getTagId($tag);
-		}
-
-		if($tagId === false) {
-			$l10n = \OC::$server->getL10N('core');
-			throw new \Exception(
-				$l10n->t('Could not find category "%s"', [$tag])
-			);
-		}
-
-		$ids = [];
-		$sql = 'SELECT `objid` FROM `' . self::RELATION_TABLE
-			. '` WHERE `categoryid` = ?';
-
-		try {
-			$stmt = \OC_DB::prepare($sql);
-			$result = $stmt->execute([$tagId]);
-			if ($result === null) {
-				\OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
-				return false;
-			}
-		} catch(\Exception $e) {
-			\OC::$server->getLogger()->logException($e, [
-				'message' => __METHOD__,
-				'level' => ILogger::ERROR,
-				'app' => 'core',
-			]);
-			return false;
-		}
-
-		if(!is_null($result)) {
-			while( $row = $result->fetchRow()) {
-				$id = (int)$row['objid'];
-
-				if ($this->includeShared) {
-					// We have to check if we are really allowed to access the
-					// items that are tagged with $tag. To that end, we ask the
-					// corresponding sharing backend if the item identified by $id
-					// is owned by any of $this->owners.
-					foreach ($this->owners as $owner) {
-						if ($this->backend->isValidSource($id, $owner)) {
-							$ids[] = $id;
-							break;
-						}
-					}
-				} else {
-					$ids[] = $id;
-				}
-			}
-		}
-
-		return $ids;
-	}
-
-	/**
-	 * Checks whether a tag is saved for the given user,
-	 * disregarding the ones shared with him or her.
-	 *
-	 * @param string $name The tag name to check for.
-	 * @param string $user The user whose tags are to be checked.
-	 * @return bool
-	 */
-	public function userHasTag($name, $user) {
-		$key = $this->array_searchi($name, $this->getTagsForUser($user));
-		return ($key !== false) ? $this->tags[$key]->getId() : false;
-	}
-
-	/**
-	 * Checks whether a tag is saved for or shared with the current user.
-	 *
-	 * @param string $name The tag name to check for.
-	 * @return bool
-	 */
-	public function hasTag($name) {
-		return $this->getTagId($name) !== false;
-	}
-
-	/**
-	 * Add a new tag.
-	 *
-	 * @param string $name A string with a name of the tag
-	 * @return false|int the id of the added tag or false on error.
-	 */
-	public function add($name) {
-		$name = trim($name);
-
-		if($name === '') {
-			\OCP\Util::writeLog('core', __METHOD__.', Cannot add an empty tag', ILogger::DEBUG);
-			return false;
-		}
-		if($this->userHasTag($name, $this->user)) {
-			\OCP\Util::writeLog('core', __METHOD__.', name: ' . $name. ' exists already', ILogger::DEBUG);
-			return false;
-		}
-		try {
-			$tag = new Tag($this->user, $this->type, $name);
-			$tag = $this->mapper->insert($tag);
-			$this->tags[] = $tag;
-		} catch(\Exception $e) {
-			\OC::$server->getLogger()->logException($e, [
-				'message' => __METHOD__,
-				'level' => ILogger::ERROR,
-				'app' => 'core',
-			]);
-			return false;
-		}
-		\OCP\Util::writeLog('core', __METHOD__.', id: ' . $tag->getId(), ILogger::DEBUG);
-		return $tag->getId();
-	}
-
-	/**
-	 * Rename tag.
-	 *
-	 * @param string|integer $from The name or ID of the existing tag
-	 * @param string $to The new name of the tag.
-	 * @return bool
-	 */
-	public function rename($from, $to) {
-		$from = trim($from);
-		$to = trim($to);
-
-		if($to === '' || $from === '') {
-			\OCP\Util::writeLog('core', __METHOD__.', Cannot use empty tag names', ILogger::DEBUG);
-			return false;
-		}
-
-		if (is_numeric($from)) {
-			$key = $this->getTagById($from);
-		} else {
-			$key = $this->getTagByName($from);
-		}
-		if($key === false) {
-			\OCP\Util::writeLog('core', __METHOD__.', tag: ' . $from. ' does not exist', ILogger::DEBUG);
-			return false;
-		}
-		$tag = $this->tags[$key];
-
-		if($this->userHasTag($to, $tag->getOwner())) {
-			\OCP\Util::writeLog('core', __METHOD__.', A tag named ' . $to. ' already exists for user ' . $tag->getOwner() . '.', ILogger::DEBUG);
-			return false;
-		}
-
-		try {
-			$tag->setName($to);
-			$this->tags[$key] = $this->mapper->update($tag);
-		} catch(\Exception $e) {
-			\OC::$server->getLogger()->logException($e, [
-				'message' => __METHOD__,
-				'level' => ILogger::ERROR,
-				'app' => 'core',
-			]);
-			return false;
-		}
-		return true;
-	}
-
-	/**
-	 * Add a list of new tags.
-	 *
-	 * @param string[] $names A string with a name or an array of strings containing
-	 * the name(s) of the tag(s) to add.
-	 * @param bool $sync When true, save the tags
-	 * @param int|null $id int Optional object id to add to this|these tag(s)
-	 * @return bool Returns false on error.
-	 */
-	public function addMultiple($names, $sync=false, $id = null) {
-		if(!is_array($names)) {
-			$names = [$names];
-		}
-		$names = array_map('trim', $names);
-		array_filter($names);
-
-		$newones = [];
-		foreach($names as $name) {
-			if(!$this->hasTag($name) && $name !== '') {
-				$newones[] = new Tag($this->user, $this->type, $name);
-			}
-			if(!is_null($id) ) {
-				// Insert $objectid, $categoryid  pairs if not exist.
-				self::$relations[] = ['objid' => $id, 'tag' => $name];
-			}
-		}
-		$this->tags = array_merge($this->tags, $newones);
-		if($sync === true) {
-			$this->save();
-		}
-
-		return true;
-	}
-
-	/**
-	 * Save the list of tags and their object relations
-	 */
-	protected function save() {
-		if(is_array($this->tags)) {
-			foreach($this->tags as $tag) {
-				try {
-					if (!$this->mapper->tagExists($tag)) {
-						$this->mapper->insert($tag);
-					}
-				} catch(\Exception $e) {
-					\OC::$server->getLogger()->logException($e, [
-						'message' => __METHOD__,
-						'level' => ILogger::ERROR,
-						'app' => 'core',
-					]);
-				}
-			}
-
-			// reload tags to get the proper ids.
-			$this->tags = $this->mapper->loadTags($this->owners, $this->type);
-			\OCP\Util::writeLog('core', __METHOD__.', tags: ' . print_r($this->tags, true),
-				ILogger::DEBUG);
-			// Loop through temporarily cached objectid/tagname pairs
-			// and save relations.
-			$tags = $this->tags;
-			// For some reason this is needed or array_search(i) will return 0..?
-			ksort($tags);
-			$dbConnection = \OC::$server->getDatabaseConnection();
-			foreach(self::$relations as $relation) {
-				$tagId = $this->getTagId($relation['tag']);
-				\OCP\Util::writeLog('core', __METHOD__ . 'catid, ' . $relation['tag'] . ' ' . $tagId, ILogger::DEBUG);
-				if($tagId) {
-					try {
-						$dbConnection->insertIfNotExist(self::RELATION_TABLE,
-							[
-								'objid' => $relation['objid'],
-								'categoryid' => $tagId,
-								'type' => $this->type,
-								]);
-					} catch(\Exception $e) {
-						\OC::$server->getLogger()->logException($e, [
-							'message' => __METHOD__,
-							'level' => ILogger::ERROR,
-							'app' => 'core',
-						]);
-					}
-				}
-			}
-			self::$relations = []; // reset
-		} else {
-			\OCP\Util::writeLog('core', __METHOD__.', $this->tags is not an array! '
-				. print_r($this->tags, true), ILogger::ERROR);
-		}
-	}
-
-	/**
-	 * Delete tags and tag/object relations for a user.
-	 *
-	 * For hooking up on post_deleteUser
-	 *
-	 * @param array $arguments
-	 */
-	public static function post_deleteUser($arguments) {
-		// Find all objectid/tagId pairs.
-		$result = null;
-		try {
-			$stmt = \OC_DB::prepare('SELECT `id` FROM `' . self::TAG_TABLE . '` '
-				. 'WHERE `uid` = ?');
-			$result = $stmt->execute([$arguments['uid']]);
-			if ($result === null) {
-				\OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
-			}
-		} catch(\Exception $e) {
-			\OC::$server->getLogger()->logException($e, [
-				'message' => __METHOD__,
-				'level' => ILogger::ERROR,
-				'app' => 'core',
-			]);
-		}
-
-		if(!is_null($result)) {
-			try {
-				$stmt = \OC_DB::prepare('DELETE FROM `' . self::RELATION_TABLE . '` '
-					. 'WHERE `categoryid` = ?');
-				while( $row = $result->fetchRow()) {
-					try {
-						$stmt->execute([$row['id']]);
-					} catch(\Exception $e) {
-						\OC::$server->getLogger()->logException($e, [
-							'message' => __METHOD__,
-							'level' => ILogger::ERROR,
-							'app' => 'core',
-						]);
-					}
-				}
-			} catch(\Exception $e) {
-				\OC::$server->getLogger()->logException($e, [
-					'message' => __METHOD__,
-					'level' => ILogger::ERROR,
-					'app' => 'core',
-				]);
-			}
-		}
-		try {
-			$stmt = \OC_DB::prepare('DELETE FROM `' . self::TAG_TABLE . '` '
-				. 'WHERE `uid` = ?');
-			$result = $stmt->execute([$arguments['uid']]);
-			if ($result === null) {
-				\OCP\Util::writeLog('core', __METHOD__. ', DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
-			}
-		} catch(\Exception $e) {
-			\OC::$server->getLogger()->logException($e, [
-				'message' => __METHOD__,
-				'level' => ILogger::ERROR,
-				'app' => 'core',
-			]);
-		}
-	}
-
-	/**
-	 * Delete tag/object relations from the db
-	 *
-	 * @param array $ids The ids of the objects
-	 * @return boolean Returns false on error.
-	 */
-	public function purgeObjects(array $ids) {
-		if(count($ids) === 0) {
-			// job done ;)
-			return true;
-		}
-		$updates = $ids;
-		try {
-			$query = 'DELETE FROM `' . self::RELATION_TABLE . '` ';
-			$query .= 'WHERE `objid` IN (' . str_repeat('?,', count($ids)-1) . '?) ';
-			$query .= 'AND `type`= ?';
-			$updates[] = $this->type;
-			$stmt = \OC_DB::prepare($query);
-			$result = $stmt->execute($updates);
-			if ($result === null) {
-				\OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
-				return false;
-			}
-		} catch(\Exception $e) {
-			\OC::$server->getLogger()->logException($e, [
-				'message' => __METHOD__,
-				'level' => ILogger::ERROR,
-				'app' => 'core',
-			]);
-			return false;
-		}
-		return true;
-	}
-
-	/**
-	 * Get favorites for an object type
-	 *
-	 * @return array|false An array of object ids.
-	 */
-	public function getFavorites() {
-		if(!$this->userHasTag(ITags::TAG_FAVORITE, $this->user)) {
-			return [];
-		}
-
-		try {
-			return $this->getIdsForTag(ITags::TAG_FAVORITE);
-		} catch(\Exception $e) {
-			\OC::$server->getLogger()->logException($e, [
-				'message' => __METHOD__,
-				'level' => ILogger::ERROR,
-				'app' => 'core',
-			]);
-			return [];
-		}
-	}
-
-	/**
-	 * Add an object to favorites
-	 *
-	 * @param int $objid The id of the object
-	 * @return boolean
-	 */
-	public function addToFavorites($objid) {
-		if(!$this->userHasTag(ITags::TAG_FAVORITE, $this->user)) {
-			$this->add(ITags::TAG_FAVORITE);
-		}
-		return $this->tagAs($objid, ITags::TAG_FAVORITE);
-	}
-
-	/**
-	 * Remove an object from favorites
-	 *
-	 * @param int $objid The id of the object
-	 * @return boolean
-	 */
-	public function removeFromFavorites($objid) {
-		return $this->unTag($objid, ITags::TAG_FAVORITE);
-	}
-
-	/**
-	 * Creates a tag/object relation.
-	 *
-	 * @param int $objid The id of the object
-	 * @param string $tag The id or name of the tag
-	 * @return boolean Returns false on error.
-	 */
-	public function tagAs($objid, $tag) {
-		if(is_string($tag) && !is_numeric($tag)) {
-			$tag = trim($tag);
-			if($tag === '') {
-				\OCP\Util::writeLog('core', __METHOD__.', Cannot add an empty tag', ILogger::DEBUG);
-				return false;
-			}
-			if(!$this->hasTag($tag)) {
-				$this->add($tag);
-			}
-			$tagId =  $this->getTagId($tag);
-		} else {
-			$tagId = $tag;
-		}
-		try {
-			\OC::$server->getDatabaseConnection()->insertIfNotExist(self::RELATION_TABLE,
-				[
-					'objid' => $objid,
-					'categoryid' => $tagId,
-					'type' => $this->type,
-				]);
-		} catch(\Exception $e) {
-			\OC::$server->getLogger()->logException($e, [
-				'message' => __METHOD__,
-				'level' => ILogger::ERROR,
-				'app' => 'core',
-			]);
-			return false;
-		}
-		return true;
-	}
-
-	/**
-	 * Delete single tag/object relation from the db
-	 *
-	 * @param int $objid The id of the object
-	 * @param string $tag The id or name of the tag
-	 * @return boolean
-	 */
-	public function unTag($objid, $tag) {
-		if(is_string($tag) && !is_numeric($tag)) {
-			$tag = trim($tag);
-			if($tag === '') {
-				\OCP\Util::writeLog('core', __METHOD__.', Tag name is empty', ILogger::DEBUG);
-				return false;
-			}
-			$tagId =  $this->getTagId($tag);
-		} else {
-			$tagId = $tag;
-		}
-
-		try {
-			$sql = 'DELETE FROM `' . self::RELATION_TABLE . '` '
-					. 'WHERE `objid` = ? AND `categoryid` = ? AND `type` = ?';
-			$stmt = \OC_DB::prepare($sql);
-			$stmt->execute([$objid, $tagId, $this->type]);
-		} catch(\Exception $e) {
-			\OC::$server->getLogger()->logException($e, [
-				'message' => __METHOD__,
-				'level' => ILogger::ERROR,
-				'app' => 'core',
-			]);
-			return false;
-		}
-		return true;
-	}
-
-	/**
-	 * Delete tags from the database.
-	 *
-	 * @param string[]|integer[] $names An array of tags (names or IDs) to delete
-	 * @return bool Returns false on error
-	 */
-	public function delete($names) {
-		if(!is_array($names)) {
-			$names = [$names];
-		}
-
-		$names = array_map('trim', $names);
-		array_filter($names);
-
-		\OCP\Util::writeLog('core', __METHOD__ . ', before: '
-			. print_r($this->tags, true), ILogger::DEBUG);
-		foreach($names as $name) {
-			$id = null;
-
-			if (is_numeric($name)) {
-				$key = $this->getTagById($name);
-			} else {
-				$key = $this->getTagByName($name);
-			}
-			if ($key !== false) {
-				$tag = $this->tags[$key];
-				$id = $tag->getId();
-				unset($this->tags[$key]);
-				$this->mapper->delete($tag);
-			} else {
-				\OCP\Util::writeLog('core', __METHOD__ . 'Cannot delete tag ' . $name
-					. ': not found.', ILogger::ERROR);
-			}
-			if(!is_null($id) && $id !== false) {
-				try {
-					$sql = 'DELETE FROM `' . self::RELATION_TABLE . '` '
-							. 'WHERE `categoryid` = ?';
-					$stmt = \OC_DB::prepare($sql);
-					$result = $stmt->execute([$id]);
-					if ($result === null) {
-						\OCP\Util::writeLog('core',
-							__METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(),
-							ILogger::ERROR);
-						return false;
-					}
-				} catch(\Exception $e) {
-					\OC::$server->getLogger()->logException($e, [
-						'message' => __METHOD__,
-						'level' => ILogger::ERROR,
-						'app' => 'core',
-					]);
-					return false;
-				}
-			}
-		}
-		return true;
-	}
-
-	// case-insensitive array_search
-	protected function array_searchi($needle, $haystack, $mem='getName') {
-		if(!is_array($haystack)) {
-			return false;
-		}
-		return array_search(strtolower($needle), array_map(
-			function($tag) use($mem) {
-				return strtolower(call_user_func([$tag, $mem]));
-			}, $haystack)
-		);
-	}
-
-	/**
-	 * Get a tag's ID.
-	 *
-	 * @param string $name The tag name to look for.
-	 * @return string|bool The tag's id or false if no matching tag is found.
-	 */
-	private function getTagId($name) {
-		$key = $this->array_searchi($name, $this->tags);
-		if ($key !== false) {
-			return $this->tags[$key]->getId();
-		}
-		return false;
-	}
-
-	/**
-	 * Get a tag by its name.
-	 *
-	 * @param string $name The tag name.
-	 * @return integer|bool The tag object's offset within the $this->tags
-	 *                      array or false if it doesn't exist.
-	 */
-	private function getTagByName($name) {
-		return $this->array_searchi($name, $this->tags, 'getName');
-	}
-
-	/**
-	 * Get a tag by its ID.
-	 *
-	 * @param string $id The tag ID to look for.
-	 * @return integer|bool The tag object's offset within the $this->tags
-	 *                      array or false if it doesn't exist.
-	 */
-	private function getTagById($id) {
-		return $this->array_searchi($id, $this->tags, 'getId');
-	}
-
-	/**
-	 * Returns an array mapping a given tag's properties to its values:
-	 * ['id' => 0, 'name' = 'Tag', 'owner' = 'User', 'type' => 'tagtype']
-	 *
-	 * @param Tag $tag The tag that is going to be mapped
-	 * @return array
-	 */
-	private function tagMap(Tag $tag) {
-		return [
-			'id'    => $tag->getId(),
-			'name'  => $tag->getName(),
-			'owner' => $tag->getOwner(),
-			'type'  => $tag->getType()
-		];
-	}
+    /**
+     * Tags
+     *
+     * @var array
+     */
+    private $tags = [];
+
+    /**
+     * Used for storing objectid/categoryname pairs while rescanning.
+     *
+     * @var array
+     */
+    private static $relations = [];
+
+    /**
+     * Type
+     *
+     * @var string
+     */
+    private $type;
+
+    /**
+     * User
+     *
+     * @var string
+     */
+    private $user;
+
+    /**
+     * Are we including tags for shared items?
+     *
+     * @var bool
+     */
+    private $includeShared = false;
+
+    /**
+     * The current user, plus any owners of the items shared with the current
+     * user, if $this->includeShared === true.
+     *
+     * @var array
+     */
+    private $owners = [];
+
+    /**
+     * The Mapper we're using to communicate our Tag objects to the database.
+     *
+     * @var TagMapper
+     */
+    private $mapper;
+
+    /**
+     * The sharing backend for objects of $this->type. Required if
+     * $this->includeShared === true to determine ownership of items.
+     *
+     * @var \OCP\Share_Backend
+     */
+    private $backend;
+
+    const TAG_TABLE = '*PREFIX*vcategory';
+    const RELATION_TABLE = '*PREFIX*vcategory_to_object';
+
+    /**
+     * Constructor.
+     *
+     * @param TagMapper $mapper Instance of the TagMapper abstraction layer.
+     * @param string $user The user whose data the object will operate on.
+     * @param string $type The type of items for which tags will be loaded.
+     * @param array $defaultTags Tags that should be created at construction.
+     * @param boolean $includeShared Whether to include tags for items shared with this user by others.
+     */
+    public function __construct(TagMapper $mapper, $user, $type, $defaultTags = [], $includeShared = false) {
+        $this->mapper = $mapper;
+        $this->user = $user;
+        $this->type = $type;
+        $this->includeShared = $includeShared;
+        $this->owners = [$this->user];
+        if ($this->includeShared) {
+            $this->owners = array_merge($this->owners, \OC\Share\Share::getSharedItemsOwners($this->user, $this->type, true));
+            $this->backend = \OC\Share\Share::getBackend($this->type);
+        }
+        $this->tags = $this->mapper->loadTags($this->owners, $this->type);
+
+        if(count($defaultTags) > 0 && count($this->tags) === 0) {
+            $this->addMultiple($defaultTags, true);
+        }
+    }
+
+    /**
+     * Check if any tags are saved for this type and user.
+     *
+     * @return boolean
+     */
+    public function isEmpty() {
+        return count($this->tags) === 0;
+    }
+
+    /**
+     * Returns an array mapping a given tag's properties to its values:
+     * ['id' => 0, 'name' = 'Tag', 'owner' = 'User', 'type' => 'tagtype']
+     *
+     * @param string $id The ID of the tag that is going to be mapped
+     * @return array|false
+     */
+    public function getTag($id) {
+        $key = $this->getTagById($id);
+        if ($key !== false) {
+            return $this->tagMap($this->tags[$key]);
+        }
+        return false;
+    }
+
+    /**
+     * Get the tags for a specific user.
+     *
+     * This returns an array with maps containing each tag's properties:
+     * [
+     * 	['id' => 0, 'name' = 'First tag', 'owner' = 'User', 'type' => 'tagtype'],
+     * 	['id' => 1, 'name' = 'Shared tag', 'owner' = 'Other user', 'type' => 'tagtype'],
+     * ]
+     *
+     * @return array
+     */
+    public function getTags() {
+        if(!count($this->tags)) {
+            return [];
+        }
+
+        usort($this->tags, function($a, $b) {
+            return strnatcasecmp($a->getName(), $b->getName());
+        });
+        $tagMap = [];
+
+        foreach($this->tags as $tag) {
+            if($tag->getName() !== ITags::TAG_FAVORITE) {
+                $tagMap[] = $this->tagMap($tag);
+            }
+        }
+        return $tagMap;
+
+    }
+
+    /**
+     * Return only the tags owned by the given user, omitting any tags shared
+     * by other users.
+     *
+     * @param string $user The user whose tags are to be checked.
+     * @return array An array of Tag objects.
+     */
+    public function getTagsForUser($user) {
+        return array_filter($this->tags,
+            function($tag) use($user) {
+                return $tag->getOwner() === $user;
+            }
+        );
+    }
+
+    /**
+     * Get the list of tags for the given ids.
+     *
+     * @param array $objIds array of object ids
+     * @return array|boolean of tags id as key to array of tag names
+     * or false if an error occurred
+     */
+    public function getTagsForObjects(array $objIds) {
+        $entries = [];
+
+        try {
+            $conn = \OC::$server->getDatabaseConnection();
+            $chunks = array_chunk($objIds, 900, false);
+            foreach ($chunks as $chunk) {
+                $result = $conn->executeQuery(
+                    'SELECT `category`, `categoryid`, `objid` ' .
+                    'FROM `' . self::RELATION_TABLE . '` r, `' . self::TAG_TABLE . '` ' .
+                    'WHERE `categoryid` = `id` AND `uid` = ? AND r.`type` = ? AND `objid` IN (?)',
+                    [$this->user, $this->type, $chunk],
+                    [null, null, IQueryBuilder::PARAM_INT_ARRAY]
+                );
+                while ($row = $result->fetch()) {
+                    $objId = (int)$row['objid'];
+                    if (!isset($entries[$objId])) {
+                        $entries[$objId] = [];
+                    }
+                    $entries[$objId][] = $row['category'];
+                }
+                if ($result === null) {
+                    \OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
+                    return false;
+                }
+            }
+        } catch(\Exception $e) {
+            \OC::$server->getLogger()->logException($e, [
+                'message' => __METHOD__,
+                'level' => ILogger::ERROR,
+                'app' => 'core',
+            ]);
+            return false;
+        }
+
+        return $entries;
+    }
+
+    /**
+     * Get the a list if items tagged with $tag.
+     *
+     * Throws an exception if the tag could not be found.
+     *
+     * @param string $tag Tag id or name.
+     * @return array|false An array of object ids or false on error.
+     * @throws \Exception
+     */
+    public function getIdsForTag($tag) {
+        $result = null;
+        $tagId = false;
+        if(is_numeric($tag)) {
+            $tagId = $tag;
+        } elseif(is_string($tag)) {
+            $tag = trim($tag);
+            if($tag === '') {
+                \OCP\Util::writeLog('core', __METHOD__.', Cannot use empty tag names', ILogger::DEBUG);
+                return false;
+            }
+            $tagId = $this->getTagId($tag);
+        }
+
+        if($tagId === false) {
+            $l10n = \OC::$server->getL10N('core');
+            throw new \Exception(
+                $l10n->t('Could not find category "%s"', [$tag])
+            );
+        }
+
+        $ids = [];
+        $sql = 'SELECT `objid` FROM `' . self::RELATION_TABLE
+            . '` WHERE `categoryid` = ?';
+
+        try {
+            $stmt = \OC_DB::prepare($sql);
+            $result = $stmt->execute([$tagId]);
+            if ($result === null) {
+                \OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
+                return false;
+            }
+        } catch(\Exception $e) {
+            \OC::$server->getLogger()->logException($e, [
+                'message' => __METHOD__,
+                'level' => ILogger::ERROR,
+                'app' => 'core',
+            ]);
+            return false;
+        }
+
+        if(!is_null($result)) {
+            while( $row = $result->fetchRow()) {
+                $id = (int)$row['objid'];
+
+                if ($this->includeShared) {
+                    // We have to check if we are really allowed to access the
+                    // items that are tagged with $tag. To that end, we ask the
+                    // corresponding sharing backend if the item identified by $id
+                    // is owned by any of $this->owners.
+                    foreach ($this->owners as $owner) {
+                        if ($this->backend->isValidSource($id, $owner)) {
+                            $ids[] = $id;
+                            break;
+                        }
+                    }
+                } else {
+                    $ids[] = $id;
+                }
+            }
+        }
+
+        return $ids;
+    }
+
+    /**
+     * Checks whether a tag is saved for the given user,
+     * disregarding the ones shared with him or her.
+     *
+     * @param string $name The tag name to check for.
+     * @param string $user The user whose tags are to be checked.
+     * @return bool
+     */
+    public function userHasTag($name, $user) {
+        $key = $this->array_searchi($name, $this->getTagsForUser($user));
+        return ($key !== false) ? $this->tags[$key]->getId() : false;
+    }
+
+    /**
+     * Checks whether a tag is saved for or shared with the current user.
+     *
+     * @param string $name The tag name to check for.
+     * @return bool
+     */
+    public function hasTag($name) {
+        return $this->getTagId($name) !== false;
+    }
+
+    /**
+     * Add a new tag.
+     *
+     * @param string $name A string with a name of the tag
+     * @return false|int the id of the added tag or false on error.
+     */
+    public function add($name) {
+        $name = trim($name);
+
+        if($name === '') {
+            \OCP\Util::writeLog('core', __METHOD__.', Cannot add an empty tag', ILogger::DEBUG);
+            return false;
+        }
+        if($this->userHasTag($name, $this->user)) {
+            \OCP\Util::writeLog('core', __METHOD__.', name: ' . $name. ' exists already', ILogger::DEBUG);
+            return false;
+        }
+        try {
+            $tag = new Tag($this->user, $this->type, $name);
+            $tag = $this->mapper->insert($tag);
+            $this->tags[] = $tag;
+        } catch(\Exception $e) {
+            \OC::$server->getLogger()->logException($e, [
+                'message' => __METHOD__,
+                'level' => ILogger::ERROR,
+                'app' => 'core',
+            ]);
+            return false;
+        }
+        \OCP\Util::writeLog('core', __METHOD__.', id: ' . $tag->getId(), ILogger::DEBUG);
+        return $tag->getId();
+    }
+
+    /**
+     * Rename tag.
+     *
+     * @param string|integer $from The name or ID of the existing tag
+     * @param string $to The new name of the tag.
+     * @return bool
+     */
+    public function rename($from, $to) {
+        $from = trim($from);
+        $to = trim($to);
+
+        if($to === '' || $from === '') {
+            \OCP\Util::writeLog('core', __METHOD__.', Cannot use empty tag names', ILogger::DEBUG);
+            return false;
+        }
+
+        if (is_numeric($from)) {
+            $key = $this->getTagById($from);
+        } else {
+            $key = $this->getTagByName($from);
+        }
+        if($key === false) {
+            \OCP\Util::writeLog('core', __METHOD__.', tag: ' . $from. ' does not exist', ILogger::DEBUG);
+            return false;
+        }
+        $tag = $this->tags[$key];
+
+        if($this->userHasTag($to, $tag->getOwner())) {
+            \OCP\Util::writeLog('core', __METHOD__.', A tag named ' . $to. ' already exists for user ' . $tag->getOwner() . '.', ILogger::DEBUG);
+            return false;
+        }
+
+        try {
+            $tag->setName($to);
+            $this->tags[$key] = $this->mapper->update($tag);
+        } catch(\Exception $e) {
+            \OC::$server->getLogger()->logException($e, [
+                'message' => __METHOD__,
+                'level' => ILogger::ERROR,
+                'app' => 'core',
+            ]);
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Add a list of new tags.
+     *
+     * @param string[] $names A string with a name or an array of strings containing
+     * the name(s) of the tag(s) to add.
+     * @param bool $sync When true, save the tags
+     * @param int|null $id int Optional object id to add to this|these tag(s)
+     * @return bool Returns false on error.
+     */
+    public function addMultiple($names, $sync=false, $id = null) {
+        if(!is_array($names)) {
+            $names = [$names];
+        }
+        $names = array_map('trim', $names);
+        array_filter($names);
+
+        $newones = [];
+        foreach($names as $name) {
+            if(!$this->hasTag($name) && $name !== '') {
+                $newones[] = new Tag($this->user, $this->type, $name);
+            }
+            if(!is_null($id) ) {
+                // Insert $objectid, $categoryid  pairs if not exist.
+                self::$relations[] = ['objid' => $id, 'tag' => $name];
+            }
+        }
+        $this->tags = array_merge($this->tags, $newones);
+        if($sync === true) {
+            $this->save();
+        }
+
+        return true;
+    }
+
+    /**
+     * Save the list of tags and their object relations
+     */
+    protected function save() {
+        if(is_array($this->tags)) {
+            foreach($this->tags as $tag) {
+                try {
+                    if (!$this->mapper->tagExists($tag)) {
+                        $this->mapper->insert($tag);
+                    }
+                } catch(\Exception $e) {
+                    \OC::$server->getLogger()->logException($e, [
+                        'message' => __METHOD__,
+                        'level' => ILogger::ERROR,
+                        'app' => 'core',
+                    ]);
+                }
+            }
+
+            // reload tags to get the proper ids.
+            $this->tags = $this->mapper->loadTags($this->owners, $this->type);
+            \OCP\Util::writeLog('core', __METHOD__.', tags: ' . print_r($this->tags, true),
+                ILogger::DEBUG);
+            // Loop through temporarily cached objectid/tagname pairs
+            // and save relations.
+            $tags = $this->tags;
+            // For some reason this is needed or array_search(i) will return 0..?
+            ksort($tags);
+            $dbConnection = \OC::$server->getDatabaseConnection();
+            foreach(self::$relations as $relation) {
+                $tagId = $this->getTagId($relation['tag']);
+                \OCP\Util::writeLog('core', __METHOD__ . 'catid, ' . $relation['tag'] . ' ' . $tagId, ILogger::DEBUG);
+                if($tagId) {
+                    try {
+                        $dbConnection->insertIfNotExist(self::RELATION_TABLE,
+                            [
+                                'objid' => $relation['objid'],
+                                'categoryid' => $tagId,
+                                'type' => $this->type,
+                                ]);
+                    } catch(\Exception $e) {
+                        \OC::$server->getLogger()->logException($e, [
+                            'message' => __METHOD__,
+                            'level' => ILogger::ERROR,
+                            'app' => 'core',
+                        ]);
+                    }
+                }
+            }
+            self::$relations = []; // reset
+        } else {
+            \OCP\Util::writeLog('core', __METHOD__.', $this->tags is not an array! '
+                . print_r($this->tags, true), ILogger::ERROR);
+        }
+    }
+
+    /**
+     * Delete tags and tag/object relations for a user.
+     *
+     * For hooking up on post_deleteUser
+     *
+     * @param array $arguments
+     */
+    public static function post_deleteUser($arguments) {
+        // Find all objectid/tagId pairs.
+        $result = null;
+        try {
+            $stmt = \OC_DB::prepare('SELECT `id` FROM `' . self::TAG_TABLE . '` '
+                . 'WHERE `uid` = ?');
+            $result = $stmt->execute([$arguments['uid']]);
+            if ($result === null) {
+                \OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
+            }
+        } catch(\Exception $e) {
+            \OC::$server->getLogger()->logException($e, [
+                'message' => __METHOD__,
+                'level' => ILogger::ERROR,
+                'app' => 'core',
+            ]);
+        }
+
+        if(!is_null($result)) {
+            try {
+                $stmt = \OC_DB::prepare('DELETE FROM `' . self::RELATION_TABLE . '` '
+                    . 'WHERE `categoryid` = ?');
+                while( $row = $result->fetchRow()) {
+                    try {
+                        $stmt->execute([$row['id']]);
+                    } catch(\Exception $e) {
+                        \OC::$server->getLogger()->logException($e, [
+                            'message' => __METHOD__,
+                            'level' => ILogger::ERROR,
+                            'app' => 'core',
+                        ]);
+                    }
+                }
+            } catch(\Exception $e) {
+                \OC::$server->getLogger()->logException($e, [
+                    'message' => __METHOD__,
+                    'level' => ILogger::ERROR,
+                    'app' => 'core',
+                ]);
+            }
+        }
+        try {
+            $stmt = \OC_DB::prepare('DELETE FROM `' . self::TAG_TABLE . '` '
+                . 'WHERE `uid` = ?');
+            $result = $stmt->execute([$arguments['uid']]);
+            if ($result === null) {
+                \OCP\Util::writeLog('core', __METHOD__. ', DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
+            }
+        } catch(\Exception $e) {
+            \OC::$server->getLogger()->logException($e, [
+                'message' => __METHOD__,
+                'level' => ILogger::ERROR,
+                'app' => 'core',
+            ]);
+        }
+    }
+
+    /**
+     * Delete tag/object relations from the db
+     *
+     * @param array $ids The ids of the objects
+     * @return boolean Returns false on error.
+     */
+    public function purgeObjects(array $ids) {
+        if(count($ids) === 0) {
+            // job done ;)
+            return true;
+        }
+        $updates = $ids;
+        try {
+            $query = 'DELETE FROM `' . self::RELATION_TABLE . '` ';
+            $query .= 'WHERE `objid` IN (' . str_repeat('?,', count($ids)-1) . '?) ';
+            $query .= 'AND `type`= ?';
+            $updates[] = $this->type;
+            $stmt = \OC_DB::prepare($query);
+            $result = $stmt->execute($updates);
+            if ($result === null) {
+                \OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
+                return false;
+            }
+        } catch(\Exception $e) {
+            \OC::$server->getLogger()->logException($e, [
+                'message' => __METHOD__,
+                'level' => ILogger::ERROR,
+                'app' => 'core',
+            ]);
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Get favorites for an object type
+     *
+     * @return array|false An array of object ids.
+     */
+    public function getFavorites() {
+        if(!$this->userHasTag(ITags::TAG_FAVORITE, $this->user)) {
+            return [];
+        }
+
+        try {
+            return $this->getIdsForTag(ITags::TAG_FAVORITE);
+        } catch(\Exception $e) {
+            \OC::$server->getLogger()->logException($e, [
+                'message' => __METHOD__,
+                'level' => ILogger::ERROR,
+                'app' => 'core',
+            ]);
+            return [];
+        }
+    }
+
+    /**
+     * Add an object to favorites
+     *
+     * @param int $objid The id of the object
+     * @return boolean
+     */
+    public function addToFavorites($objid) {
+        if(!$this->userHasTag(ITags::TAG_FAVORITE, $this->user)) {
+            $this->add(ITags::TAG_FAVORITE);
+        }
+        return $this->tagAs($objid, ITags::TAG_FAVORITE);
+    }
+
+    /**
+     * Remove an object from favorites
+     *
+     * @param int $objid The id of the object
+     * @return boolean
+     */
+    public function removeFromFavorites($objid) {
+        return $this->unTag($objid, ITags::TAG_FAVORITE);
+    }
+
+    /**
+     * Creates a tag/object relation.
+     *
+     * @param int $objid The id of the object
+     * @param string $tag The id or name of the tag
+     * @return boolean Returns false on error.
+     */
+    public function tagAs($objid, $tag) {
+        if(is_string($tag) && !is_numeric($tag)) {
+            $tag = trim($tag);
+            if($tag === '') {
+                \OCP\Util::writeLog('core', __METHOD__.', Cannot add an empty tag', ILogger::DEBUG);
+                return false;
+            }
+            if(!$this->hasTag($tag)) {
+                $this->add($tag);
+            }
+            $tagId =  $this->getTagId($tag);
+        } else {
+            $tagId = $tag;
+        }
+        try {
+            \OC::$server->getDatabaseConnection()->insertIfNotExist(self::RELATION_TABLE,
+                [
+                    'objid' => $objid,
+                    'categoryid' => $tagId,
+                    'type' => $this->type,
+                ]);
+        } catch(\Exception $e) {
+            \OC::$server->getLogger()->logException($e, [
+                'message' => __METHOD__,
+                'level' => ILogger::ERROR,
+                'app' => 'core',
+            ]);
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Delete single tag/object relation from the db
+     *
+     * @param int $objid The id of the object
+     * @param string $tag The id or name of the tag
+     * @return boolean
+     */
+    public function unTag($objid, $tag) {
+        if(is_string($tag) && !is_numeric($tag)) {
+            $tag = trim($tag);
+            if($tag === '') {
+                \OCP\Util::writeLog('core', __METHOD__.', Tag name is empty', ILogger::DEBUG);
+                return false;
+            }
+            $tagId =  $this->getTagId($tag);
+        } else {
+            $tagId = $tag;
+        }
+
+        try {
+            $sql = 'DELETE FROM `' . self::RELATION_TABLE . '` '
+                    . 'WHERE `objid` = ? AND `categoryid` = ? AND `type` = ?';
+            $stmt = \OC_DB::prepare($sql);
+            $stmt->execute([$objid, $tagId, $this->type]);
+        } catch(\Exception $e) {
+            \OC::$server->getLogger()->logException($e, [
+                'message' => __METHOD__,
+                'level' => ILogger::ERROR,
+                'app' => 'core',
+            ]);
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Delete tags from the database.
+     *
+     * @param string[]|integer[] $names An array of tags (names or IDs) to delete
+     * @return bool Returns false on error
+     */
+    public function delete($names) {
+        if(!is_array($names)) {
+            $names = [$names];
+        }
+
+        $names = array_map('trim', $names);
+        array_filter($names);
+
+        \OCP\Util::writeLog('core', __METHOD__ . ', before: '
+            . print_r($this->tags, true), ILogger::DEBUG);
+        foreach($names as $name) {
+            $id = null;
+
+            if (is_numeric($name)) {
+                $key = $this->getTagById($name);
+            } else {
+                $key = $this->getTagByName($name);
+            }
+            if ($key !== false) {
+                $tag = $this->tags[$key];
+                $id = $tag->getId();
+                unset($this->tags[$key]);
+                $this->mapper->delete($tag);
+            } else {
+                \OCP\Util::writeLog('core', __METHOD__ . 'Cannot delete tag ' . $name
+                    . ': not found.', ILogger::ERROR);
+            }
+            if(!is_null($id) && $id !== false) {
+                try {
+                    $sql = 'DELETE FROM `' . self::RELATION_TABLE . '` '
+                            . 'WHERE `categoryid` = ?';
+                    $stmt = \OC_DB::prepare($sql);
+                    $result = $stmt->execute([$id]);
+                    if ($result === null) {
+                        \OCP\Util::writeLog('core',
+                            __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(),
+                            ILogger::ERROR);
+                        return false;
+                    }
+                } catch(\Exception $e) {
+                    \OC::$server->getLogger()->logException($e, [
+                        'message' => __METHOD__,
+                        'level' => ILogger::ERROR,
+                        'app' => 'core',
+                    ]);
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
+    // case-insensitive array_search
+    protected function array_searchi($needle, $haystack, $mem='getName') {
+        if(!is_array($haystack)) {
+            return false;
+        }
+        return array_search(strtolower($needle), array_map(
+            function($tag) use($mem) {
+                return strtolower(call_user_func([$tag, $mem]));
+            }, $haystack)
+        );
+    }
+
+    /**
+     * Get a tag's ID.
+     *
+     * @param string $name The tag name to look for.
+     * @return string|bool The tag's id or false if no matching tag is found.
+     */
+    private function getTagId($name) {
+        $key = $this->array_searchi($name, $this->tags);
+        if ($key !== false) {
+            return $this->tags[$key]->getId();
+        }
+        return false;
+    }
+
+    /**
+     * Get a tag by its name.
+     *
+     * @param string $name The tag name.
+     * @return integer|bool The tag object's offset within the $this->tags
+     *                      array or false if it doesn't exist.
+     */
+    private function getTagByName($name) {
+        return $this->array_searchi($name, $this->tags, 'getName');
+    }
+
+    /**
+     * Get a tag by its ID.
+     *
+     * @param string $id The tag ID to look for.
+     * @return integer|bool The tag object's offset within the $this->tags
+     *                      array or false if it doesn't exist.
+     */
+    private function getTagById($id) {
+        return $this->array_searchi($id, $this->tags, 'getId');
+    }
+
+    /**
+     * Returns an array mapping a given tag's properties to its values:
+     * ['id' => 0, 'name' = 'Tag', 'owner' = 'User', 'type' => 'tagtype']
+     *
+     * @param Tag $tag The tag that is going to be mapped
+     * @return array
+     */
+    private function tagMap(Tag $tag) {
+        return [
+            'id'    => $tag->getId(),
+            'name'  => $tag->getName(),
+            'owner' => $tag->getOwner(),
+            'type'  => $tag->getType()
+        ];
+    }
 }

Spacing +83 added lines, -83 removed lines

@@ -136,7 +136,7 @@ 
 		}
 		$this->tags = $this->mapper->loadTags($this->owners, $this->type);
 
-		if(count($defaultTags) > 0 && count($this->tags) === 0) {
+		if (count($defaultTags) > 0 && count($this->tags) === 0) {
 			$this->addMultiple($defaultTags, true);
 		}
 	}
@@ -177,7 +177,7 @@ 
 	 * @return array
 	 */
 	public function getTags() {
-		if(!count($this->tags)) {
+		if (!count($this->tags)) {
 			return [];
 		}
 
@@ -186,8 +186,8 @@ 
 		});
 		$tagMap = [];
 
-		foreach($this->tags as $tag) {
-			if($tag->getName() !== ITags::TAG_FAVORITE) {
+		foreach ($this->tags as $tag) {
+			if ($tag->getName() !== ITags::TAG_FAVORITE) {
 				$tagMap[] = $this->tagMap($tag);
 			}
 		}
@@ -225,25 +225,25 @@ 
 			$chunks = array_chunk($objIds, 900, false);
 			foreach ($chunks as $chunk) {
 				$result = $conn->executeQuery(
-					'SELECT `category`, `categoryid`, `objid` ' .
-					'FROM `' . self::RELATION_TABLE . '` r, `' . self::TAG_TABLE . '` ' .
+					'SELECT `category`, `categoryid`, `objid` '.
+					'FROM `'.self::RELATION_TABLE.'` r, `'.self::TAG_TABLE.'` '.
 					'WHERE `categoryid` = `id` AND `uid` = ? AND r.`type` = ? AND `objid` IN (?)',
 					[$this->user, $this->type, $chunk],
 					[null, null, IQueryBuilder::PARAM_INT_ARRAY]
 				);
 				while ($row = $result->fetch()) {
-					$objId = (int)$row['objid'];
+					$objId = (int) $row['objid'];
 					if (!isset($entries[$objId])) {
 						$entries[$objId] = [];
 					}
 					$entries[$objId][] = $row['category'];
 				}
 				if ($result === null) {
-					\OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
+					\OCP\Util::writeLog('core', __METHOD__.'DB error: '.\OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
 					return false;
 				}
 			}
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			\OC::$server->getLogger()->logException($e, [
 				'message' => __METHOD__,
 				'level' => ILogger::ERROR,
@@ -267,18 +267,18 @@ 
 	public function getIdsForTag($tag) {
 		$result = null;
 		$tagId = false;
-		if(is_numeric($tag)) {
+		if (is_numeric($tag)) {
 			$tagId = $tag;
-		} elseif(is_string($tag)) {
+		} elseif (is_string($tag)) {
 			$tag = trim($tag);
-			if($tag === '') {
+			if ($tag === '') {
 				\OCP\Util::writeLog('core', __METHOD__.', Cannot use empty tag names', ILogger::DEBUG);
 				return false;
 			}
 			$tagId = $this->getTagId($tag);
 		}
 
-		if($tagId === false) {
+		if ($tagId === false) {
 			$l10n = \OC::$server->getL10N('core');
 			throw new \Exception(
 				$l10n->t('Could not find category "%s"', [$tag])
@@ -286,17 +286,17 @@ 
 		}
 
 		$ids = [];
-		$sql = 'SELECT `objid` FROM `' . self::RELATION_TABLE
+		$sql = 'SELECT `objid` FROM `'.self::RELATION_TABLE
 			. '` WHERE `categoryid` = ?';
 
 		try {
 			$stmt = \OC_DB::prepare($sql);
 			$result = $stmt->execute([$tagId]);
 			if ($result === null) {
-				\OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
+				\OCP\Util::writeLog('core', __METHOD__.'DB error: '.\OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
 				return false;
 			}
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			\OC::$server->getLogger()->logException($e, [
 				'message' => __METHOD__,
 				'level' => ILogger::ERROR,
@@ -305,9 +305,9 @@ 
 			return false;
 		}
 
-		if(!is_null($result)) {
-			while( $row = $result->fetchRow()) {
-				$id = (int)$row['objid'];
+		if (!is_null($result)) {
+			while ($row = $result->fetchRow()) {
+				$id = (int) $row['objid'];
 
 				if ($this->includeShared) {
 					// We have to check if we are really allowed to access the
@@ -361,19 +361,19 @@ 
 	public function add($name) {
 		$name = trim($name);
 
-		if($name === '') {
+		if ($name === '') {
 			\OCP\Util::writeLog('core', __METHOD__.', Cannot add an empty tag', ILogger::DEBUG);
 			return false;
 		}
-		if($this->userHasTag($name, $this->user)) {
-			\OCP\Util::writeLog('core', __METHOD__.', name: ' . $name. ' exists already', ILogger::DEBUG);
+		if ($this->userHasTag($name, $this->user)) {
+			\OCP\Util::writeLog('core', __METHOD__.', name: '.$name.' exists already', ILogger::DEBUG);
 			return false;
 		}
 		try {
 			$tag = new Tag($this->user, $this->type, $name);
 			$tag = $this->mapper->insert($tag);
 			$this->tags[] = $tag;
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			\OC::$server->getLogger()->logException($e, [
 				'message' => __METHOD__,
 				'level' => ILogger::ERROR,
@@ -381,7 +381,7 @@ 
 			]);
 			return false;
 		}
-		\OCP\Util::writeLog('core', __METHOD__.', id: ' . $tag->getId(), ILogger::DEBUG);
+		\OCP\Util::writeLog('core', __METHOD__.', id: '.$tag->getId(), ILogger::DEBUG);
 		return $tag->getId();
 	}
 
@@ -396,7 +396,7 @@ 
 		$from = trim($from);
 		$to = trim($to);
 
-		if($to === '' || $from === '') {
+		if ($to === '' || $from === '') {
 			\OCP\Util::writeLog('core', __METHOD__.', Cannot use empty tag names', ILogger::DEBUG);
 			return false;
 		}
@@ -406,21 +406,21 @@ 
 		} else {
 			$key = $this->getTagByName($from);
 		}
-		if($key === false) {
-			\OCP\Util::writeLog('core', __METHOD__.', tag: ' . $from. ' does not exist', ILogger::DEBUG);
+		if ($key === false) {
+			\OCP\Util::writeLog('core', __METHOD__.', tag: '.$from.' does not exist', ILogger::DEBUG);
 			return false;
 		}
 		$tag = $this->tags[$key];
 
-		if($this->userHasTag($to, $tag->getOwner())) {
-			\OCP\Util::writeLog('core', __METHOD__.', A tag named ' . $to. ' already exists for user ' . $tag->getOwner() . '.', ILogger::DEBUG);
+		if ($this->userHasTag($to, $tag->getOwner())) {
+			\OCP\Util::writeLog('core', __METHOD__.', A tag named '.$to.' already exists for user '.$tag->getOwner().'.', ILogger::DEBUG);
 			return false;
 		}
 
 		try {
 			$tag->setName($to);
 			$this->tags[$key] = $this->mapper->update($tag);
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			\OC::$server->getLogger()->logException($e, [
 				'message' => __METHOD__,
 				'level' => ILogger::ERROR,
@@ -440,25 +440,25 @@ 
 	 * @param int|null $id int Optional object id to add to this|these tag(s)
 	 * @return bool Returns false on error.
 	 */
-	public function addMultiple($names, $sync=false, $id = null) {
-		if(!is_array($names)) {
+	public function addMultiple($names, $sync = false, $id = null) {
+		if (!is_array($names)) {
 			$names = [$names];
 		}
 		$names = array_map('trim', $names);
 		array_filter($names);
 
 		$newones = [];
-		foreach($names as $name) {
-			if(!$this->hasTag($name) && $name !== '') {
+		foreach ($names as $name) {
+			if (!$this->hasTag($name) && $name !== '') {
 				$newones[] = new Tag($this->user, $this->type, $name);
 			}
-			if(!is_null($id) ) {
+			if (!is_null($id)) {
 				// Insert $objectid, $categoryid  pairs if not exist.
 				self::$relations[] = ['objid' => $id, 'tag' => $name];
 			}
 		}
 		$this->tags = array_merge($this->tags, $newones);
-		if($sync === true) {
+		if ($sync === true) {
 			$this->save();
 		}
 
@@ -469,13 +469,13 @@ 
 	 * Save the list of tags and their object relations
 	 */
 	protected function save() {
-		if(is_array($this->tags)) {
-			foreach($this->tags as $tag) {
+		if (is_array($this->tags)) {
+			foreach ($this->tags as $tag) {
 				try {
 					if (!$this->mapper->tagExists($tag)) {
 						$this->mapper->insert($tag);
 					}
-				} catch(\Exception $e) {
+				} catch (\Exception $e) {
 					\OC::$server->getLogger()->logException($e, [
 						'message' => __METHOD__,
 						'level' => ILogger::ERROR,
@@ -486,7 +486,7 @@ 
 
 			// reload tags to get the proper ids.
 			$this->tags = $this->mapper->loadTags($this->owners, $this->type);
-			\OCP\Util::writeLog('core', __METHOD__.', tags: ' . print_r($this->tags, true),
+			\OCP\Util::writeLog('core', __METHOD__.', tags: '.print_r($this->tags, true),
 				ILogger::DEBUG);
 			// Loop through temporarily cached objectid/tagname pairs
 			// and save relations.
@@ -494,10 +494,10 @@ 
 			// For some reason this is needed or array_search(i) will return 0..?
 			ksort($tags);
 			$dbConnection = \OC::$server->getDatabaseConnection();
-			foreach(self::$relations as $relation) {
+			foreach (self::$relations as $relation) {
 				$tagId = $this->getTagId($relation['tag']);
-				\OCP\Util::writeLog('core', __METHOD__ . 'catid, ' . $relation['tag'] . ' ' . $tagId, ILogger::DEBUG);
-				if($tagId) {
+				\OCP\Util::writeLog('core', __METHOD__.'catid, '.$relation['tag'].' '.$tagId, ILogger::DEBUG);
+				if ($tagId) {
 					try {
 						$dbConnection->insertIfNotExist(self::RELATION_TABLE,
 							[
@@ -505,7 +505,7 @@ 
 								'categoryid' => $tagId,
 								'type' => $this->type,
 								]);
-					} catch(\Exception $e) {
+					} catch (\Exception $e) {
 						\OC::$server->getLogger()->logException($e, [
 							'message' => __METHOD__,
 							'level' => ILogger::ERROR,
@@ -532,13 +532,13 @@ 
 		// Find all objectid/tagId pairs.
 		$result = null;
 		try {
-			$stmt = \OC_DB::prepare('SELECT `id` FROM `' . self::TAG_TABLE . '` '
+			$stmt = \OC_DB::prepare('SELECT `id` FROM `'.self::TAG_TABLE.'` '
 				. 'WHERE `uid` = ?');
 			$result = $stmt->execute([$arguments['uid']]);
 			if ($result === null) {
-				\OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
+				\OCP\Util::writeLog('core', __METHOD__.'DB error: '.\OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
 			}
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			\OC::$server->getLogger()->logException($e, [
 				'message' => __METHOD__,
 				'level' => ILogger::ERROR,
@@ -546,14 +546,14 @@ 
 			]);
 		}
 
-		if(!is_null($result)) {
+		if (!is_null($result)) {
 			try {
-				$stmt = \OC_DB::prepare('DELETE FROM `' . self::RELATION_TABLE . '` '
+				$stmt = \OC_DB::prepare('DELETE FROM `'.self::RELATION_TABLE.'` '
 					. 'WHERE `categoryid` = ?');
-				while( $row = $result->fetchRow()) {
+				while ($row = $result->fetchRow()) {
 					try {
 						$stmt->execute([$row['id']]);
-					} catch(\Exception $e) {
+					} catch (\Exception $e) {
 						\OC::$server->getLogger()->logException($e, [
 							'message' => __METHOD__,
 							'level' => ILogger::ERROR,
@@ -561,7 +561,7 @@ 
 						]);
 					}
 				}
-			} catch(\Exception $e) {
+			} catch (\Exception $e) {
 				\OC::$server->getLogger()->logException($e, [
 					'message' => __METHOD__,
 					'level' => ILogger::ERROR,
@@ -570,13 +570,13 @@ 
 			}
 		}
 		try {
-			$stmt = \OC_DB::prepare('DELETE FROM `' . self::TAG_TABLE . '` '
+			$stmt = \OC_DB::prepare('DELETE FROM `'.self::TAG_TABLE.'` '
 				. 'WHERE `uid` = ?');
 			$result = $stmt->execute([$arguments['uid']]);
 			if ($result === null) {
-				\OCP\Util::writeLog('core', __METHOD__. ', DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
+				\OCP\Util::writeLog('core', __METHOD__.', DB error: '.\OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
 			}
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			\OC::$server->getLogger()->logException($e, [
 				'message' => __METHOD__,
 				'level' => ILogger::ERROR,
@@ -592,23 +592,23 @@ 
 	 * @return boolean Returns false on error.
 	 */
 	public function purgeObjects(array $ids) {
-		if(count($ids) === 0) {
+		if (count($ids) === 0) {
 			// job done ;)
 			return true;
 		}
 		$updates = $ids;
 		try {
-			$query = 'DELETE FROM `' . self::RELATION_TABLE . '` ';
-			$query .= 'WHERE `objid` IN (' . str_repeat('?,', count($ids)-1) . '?) ';
+			$query = 'DELETE FROM `'.self::RELATION_TABLE.'` ';
+			$query .= 'WHERE `objid` IN ('.str_repeat('?,', count($ids) - 1).'?) ';
 			$query .= 'AND `type`= ?';
 			$updates[] = $this->type;
 			$stmt = \OC_DB::prepare($query);
 			$result = $stmt->execute($updates);
 			if ($result === null) {
-				\OCP\Util::writeLog('core', __METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
+				\OCP\Util::writeLog('core', __METHOD__.'DB error: '.\OC::$server->getDatabaseConnection()->getError(), ILogger::ERROR);
 				return false;
 			}
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			\OC::$server->getLogger()->logException($e, [
 				'message' => __METHOD__,
 				'level' => ILogger::ERROR,
@@ -625,13 +625,13 @@ 
 	 * @return array|false An array of object ids.
 	 */
 	public function getFavorites() {
-		if(!$this->userHasTag(ITags::TAG_FAVORITE, $this->user)) {
+		if (!$this->userHasTag(ITags::TAG_FAVORITE, $this->user)) {
 			return [];
 		}
 
 		try {
 			return $this->getIdsForTag(ITags::TAG_FAVORITE);
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			\OC::$server->getLogger()->logException($e, [
 				'message' => __METHOD__,
 				'level' => ILogger::ERROR,
@@ -648,7 +648,7 @@ 
 	 * @return boolean
 	 */
 	public function addToFavorites($objid) {
-		if(!$this->userHasTag(ITags::TAG_FAVORITE, $this->user)) {
+		if (!$this->userHasTag(ITags::TAG_FAVORITE, $this->user)) {
 			$this->add(ITags::TAG_FAVORITE);
 		}
 		return $this->tagAs($objid, ITags::TAG_FAVORITE);
@@ -672,16 +672,16 @@ 
 	 * @return boolean Returns false on error.
 	 */
 	public function tagAs($objid, $tag) {
-		if(is_string($tag) && !is_numeric($tag)) {
+		if (is_string($tag) && !is_numeric($tag)) {
 			$tag = trim($tag);
-			if($tag === '') {
+			if ($tag === '') {
 				\OCP\Util::writeLog('core', __METHOD__.', Cannot add an empty tag', ILogger::DEBUG);
 				return false;
 			}
-			if(!$this->hasTag($tag)) {
+			if (!$this->hasTag($tag)) {
 				$this->add($tag);
 			}
-			$tagId =  $this->getTagId($tag);
+			$tagId = $this->getTagId($tag);
 		} else {
 			$tagId = $tag;
 		}
@@ -692,7 +692,7 @@ 
 					'categoryid' => $tagId,
 					'type' => $this->type,
 				]);
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			\OC::$server->getLogger()->logException($e, [
 				'message' => __METHOD__,
 				'level' => ILogger::ERROR,
@@ -711,23 +711,23 @@ 
 	 * @return boolean
 	 */
 	public function unTag($objid, $tag) {
-		if(is_string($tag) && !is_numeric($tag)) {
+		if (is_string($tag) && !is_numeric($tag)) {
 			$tag = trim($tag);
-			if($tag === '') {
+			if ($tag === '') {
 				\OCP\Util::writeLog('core', __METHOD__.', Tag name is empty', ILogger::DEBUG);
 				return false;
 			}
-			$tagId =  $this->getTagId($tag);
+			$tagId = $this->getTagId($tag);
 		} else {
 			$tagId = $tag;
 		}
 
 		try {
-			$sql = 'DELETE FROM `' . self::RELATION_TABLE . '` '
+			$sql = 'DELETE FROM `'.self::RELATION_TABLE.'` '
 					. 'WHERE `objid` = ? AND `categoryid` = ? AND `type` = ?';
 			$stmt = \OC_DB::prepare($sql);
 			$stmt->execute([$objid, $tagId, $this->type]);
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			\OC::$server->getLogger()->logException($e, [
 				'message' => __METHOD__,
 				'level' => ILogger::ERROR,
@@ -745,16 +745,16 @@ 
 	 * @return bool Returns false on error
 	 */
 	public function delete($names) {
-		if(!is_array($names)) {
+		if (!is_array($names)) {
 			$names = [$names];
 		}
 
 		$names = array_map('trim', $names);
 		array_filter($names);
 
-		\OCP\Util::writeLog('core', __METHOD__ . ', before: '
+		\OCP\Util::writeLog('core', __METHOD__.', before: '
 			. print_r($this->tags, true), ILogger::DEBUG);
-		foreach($names as $name) {
+		foreach ($names as $name) {
 			$id = null;
 
 			if (is_numeric($name)) {
@@ -768,22 +768,22 @@ 
 				unset($this->tags[$key]);
 				$this->mapper->delete($tag);
 			} else {
-				\OCP\Util::writeLog('core', __METHOD__ . 'Cannot delete tag ' . $name
+				\OCP\Util::writeLog('core', __METHOD__.'Cannot delete tag '.$name
 					. ': not found.', ILogger::ERROR);
 			}
-			if(!is_null($id) && $id !== false) {
+			if (!is_null($id) && $id !== false) {
 				try {
-					$sql = 'DELETE FROM `' . self::RELATION_TABLE . '` '
+					$sql = 'DELETE FROM `'.self::RELATION_TABLE.'` '
 							. 'WHERE `categoryid` = ?';
 					$stmt = \OC_DB::prepare($sql);
 					$result = $stmt->execute([$id]);
 					if ($result === null) {
 						\OCP\Util::writeLog('core',
-							__METHOD__. 'DB error: ' . \OC::$server->getDatabaseConnection()->getError(),
+							__METHOD__.'DB error: '.\OC::$server->getDatabaseConnection()->getError(),
 							ILogger::ERROR);
 						return false;
 					}
-				} catch(\Exception $e) {
+				} catch (\Exception $e) {
 					\OC::$server->getLogger()->logException($e, [
 						'message' => __METHOD__,
 						'level' => ILogger::ERROR,
@@ -797,8 +797,8 @@ 
 	}
 
 	// case-insensitive array_search
-	protected function array_searchi($needle, $haystack, $mem='getName') {
-		if(!is_array($haystack)) {
+	protected function array_searchi($needle, $haystack, $mem = 'getName') {
+		if (!is_array($haystack)) {
 			return false;
 		}
 		return array_search(strtolower($needle), array_map(

core/Command/Background/Base.php

Indentation +31 added lines, -31 removed lines

@@ -39,39 +39,39 @@
 abstract class Base extends Command {
 
 
-	abstract protected function getMode();
+    abstract protected function getMode();
 
-	/**
-	 * @var \OCP\IConfig
-	 */
-	protected $config;
+    /**
+     * @var \OCP\IConfig
+     */
+    protected $config;
 
-	/**
-	 * @param \OCP\IConfig $config
-	 */
-	public function __construct(IConfig $config) {
-		$this->config = $config;
-		parent::__construct();
-	}
+    /**
+     * @param \OCP\IConfig $config
+     */
+    public function __construct(IConfig $config) {
+        $this->config = $config;
+        parent::__construct();
+    }
 
-	protected function configure() {
-		$mode = $this->getMode();
-		$this
-			->setName("background:$mode")
-			->setDescription("Use $mode to run background jobs");
-	}
+    protected function configure() {
+        $mode = $this->getMode();
+        $this
+            ->setName("background:$mode")
+            ->setDescription("Use $mode to run background jobs");
+    }
 
-	/**
-	 * Executing this command will set the background job mode for owncloud.
-	 * The mode to set is specified by the concrete sub class by implementing the
-	 * getMode() function.
-	 *
-	 * @param InputInterface $input
-	 * @param OutputInterface $output
-	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
-		$mode = $this->getMode();
-		$this->config->setAppValue( 'core', 'backgroundjobs_mode', $mode );
-		$output->writeln("Set mode for background jobs to '$mode'");
-	}
+    /**
+     * Executing this command will set the background job mode for owncloud.
+     * The mode to set is specified by the concrete sub class by implementing the
+     * getMode() function.
+     *
+     * @param InputInterface $input
+     * @param OutputInterface $output
+     */
+    protected function execute(InputInterface $input, OutputInterface $output) {
+        $mode = $this->getMode();
+        $this->config->setAppValue( 'core', 'backgroundjobs_mode', $mode );
+        $output->writeln("Set mode for background jobs to '$mode'");
+    }
 }

Spacing +1 added lines, -1 removed lines

@@ -71,7 +71,7 @@
 	 */
 	protected function execute(InputInterface $input, OutputInterface $output) {
 		$mode = $this->getMode();
-		$this->config->setAppValue( 'core', 'backgroundjobs_mode', $mode );
+		$this->config->setAppValue('core', 'backgroundjobs_mode', $mode);
 		$output->writeln("Set mode for background jobs to '$mode'");
 	}
 }

core/Controller/WebAuthnController.php

Indentation +76 added lines, -76 removed lines

@@ -38,80 +38,80 @@
 
 class WebAuthnController extends Controller {
 
-	private const WEBAUTHN_LOGIN = 'webauthn_login';
-	private const WEBAUTHN_LOGIN_UID = 'webauthn_login_uid';
-
-	/** @var Manager */
-	private $webAuthnManger;
-
-	/** @var ISession */
-	private $session;
-
-	/** @var ILogger */
-	private $logger;
-
-	/** @var WebAuthnChain */
-	private $webAuthnChain;
-
-	public function __construct($appName, IRequest $request, Manager $webAuthnManger, ISession $session, ILogger $logger, WebAuthnChain $webAuthnChain) {
-		parent::__construct($appName, $request);
-
-		$this->webAuthnManger = $webAuthnManger;
-		$this->session = $session;
-		$this->logger = $logger;
-		$this->webAuthnChain = $webAuthnChain;
-	}
-
-	/**
-	 * @NoAdminRequired
-	 * @PublicPage
-	 * @UseSession
-	 */
-	public function startAuthentication(string $loginName): JSONResponse {
-		$this->logger->debug('Starting WebAuthn login');
-
-		$this->logger->debug('Converting login name to UID');
-		$uid = $loginName;
-		Util::emitHook(
-			'\OCA\Files_Sharing\API\Server2Server',
-			'preLoginNameUsedAsUserName',
-			['uid' => &$uid]
-		);
-		$this->logger->debug('Got UID: ' . $uid);
-
-		$publicKeyCredentialRequestOptions = $this->webAuthnManger->startAuthentication($uid, $this->request->getServerHost());
-		$this->session->set(self::WEBAUTHN_LOGIN, json_encode($publicKeyCredentialRequestOptions));
-		$this->session->set(self::WEBAUTHN_LOGIN_UID, $uid);
-
-		return new JSONResponse($publicKeyCredentialRequestOptions);
-	}
-
-	/**
-	 * @NoAdminRequired
-	 * @PublicPage
-	 * @UseSession
-	 */
-	public function finishAuthentication(string $data): JSONResponse {
-		$this->logger->debug('Validating WebAuthn login');
-
-		if (!$this->session->exists(self::WEBAUTHN_LOGIN) || !$this->session->exists(self::WEBAUTHN_LOGIN_UID)) {
-			$this->logger->debug('Trying to finish WebAuthn login without session data');
-			return new JSONResponse([], Http::STATUS_BAD_REQUEST);
-		}
-
-		// Obtain the publicKeyCredentialOptions from when we started the registration
-		$publicKeyCredentialRequestOptions = PublicKeyCredentialRequestOptions::createFromString($this->session->get(self::WEBAUTHN_LOGIN));
-		$uid = $this->session->get(self::WEBAUTHN_LOGIN_UID);
-		$this->webAuthnManger->finishAuthentication($publicKeyCredentialRequestOptions, $data, $uid);
-
-		//TODO: add other parameters
-		$loginData = new LoginData(
-			$this->request,
-			$uid,
-			''
-		);
-		$this->webAuthnChain->process($loginData);
-
-		return new JSONResponse([]);
-	}
+    private const WEBAUTHN_LOGIN = 'webauthn_login';
+    private const WEBAUTHN_LOGIN_UID = 'webauthn_login_uid';
+
+    /** @var Manager */
+    private $webAuthnManger;
+
+    /** @var ISession */
+    private $session;
+
+    /** @var ILogger */
+    private $logger;
+
+    /** @var WebAuthnChain */
+    private $webAuthnChain;
+
+    public function __construct($appName, IRequest $request, Manager $webAuthnManger, ISession $session, ILogger $logger, WebAuthnChain $webAuthnChain) {
+        parent::__construct($appName, $request);
+
+        $this->webAuthnManger = $webAuthnManger;
+        $this->session = $session;
+        $this->logger = $logger;
+        $this->webAuthnChain = $webAuthnChain;
+    }
+
+    /**
+     * @NoAdminRequired
+     * @PublicPage
+     * @UseSession
+     */
+    public function startAuthentication(string $loginName): JSONResponse {
+        $this->logger->debug('Starting WebAuthn login');
+
+        $this->logger->debug('Converting login name to UID');
+        $uid = $loginName;
+        Util::emitHook(
+            '\OCA\Files_Sharing\API\Server2Server',
+            'preLoginNameUsedAsUserName',
+            ['uid' => &$uid]
+        );
+        $this->logger->debug('Got UID: ' . $uid);
+
+        $publicKeyCredentialRequestOptions = $this->webAuthnManger->startAuthentication($uid, $this->request->getServerHost());
+        $this->session->set(self::WEBAUTHN_LOGIN, json_encode($publicKeyCredentialRequestOptions));
+        $this->session->set(self::WEBAUTHN_LOGIN_UID, $uid);
+
+        return new JSONResponse($publicKeyCredentialRequestOptions);
+    }
+
+    /**
+     * @NoAdminRequired
+     * @PublicPage
+     * @UseSession
+     */
+    public function finishAuthentication(string $data): JSONResponse {
+        $this->logger->debug('Validating WebAuthn login');
+
+        if (!$this->session->exists(self::WEBAUTHN_LOGIN) || !$this->session->exists(self::WEBAUTHN_LOGIN_UID)) {
+            $this->logger->debug('Trying to finish WebAuthn login without session data');
+            return new JSONResponse([], Http::STATUS_BAD_REQUEST);
+        }
+
+        // Obtain the publicKeyCredentialOptions from when we started the registration
+        $publicKeyCredentialRequestOptions = PublicKeyCredentialRequestOptions::createFromString($this->session->get(self::WEBAUTHN_LOGIN));
+        $uid = $this->session->get(self::WEBAUTHN_LOGIN_UID);
+        $this->webAuthnManger->finishAuthentication($publicKeyCredentialRequestOptions, $data, $uid);
+
+        //TODO: add other parameters
+        $loginData = new LoginData(
+            $this->request,
+            $uid,
+            ''
+        );
+        $this->webAuthnChain->process($loginData);
+
+        return new JSONResponse([]);
+    }
 }

Spacing +1 added lines, -1 removed lines

@@ -77,7 +77,7 @@
 			'preLoginNameUsedAsUserName',
 			['uid' => &$uid]
 		);
-		$this->logger->debug('Got UID: ' . $uid);
+		$this->logger->debug('Got UID: '.$uid);
 
 		$publicKeyCredentialRequestOptions = $this->webAuthnManger->startAuthentication($uid, $this->request->getServerHost());
 		$this->session->set(self::WEBAUTHN_LOGIN, json_encode($publicKeyCredentialRequestOptions));

core/Controller/AvatarController.php

Indentation +289 added lines, -289 removed lines

@@ -53,293 +53,293 @@
  */
 class AvatarController extends Controller {
 
-	/** @var IAvatarManager */
-	protected $avatarManager;
-
-	/** @var ICache */
-	protected $cache;
-
-	/** @var IL10N */
-	protected $l;
-
-	/** @var IUserManager */
-	protected $userManager;
-
-	/** @var IUserSession */
-	protected $userSession;
-
-	/** @var IRootFolder */
-	protected $rootFolder;
-
-	/** @var ILogger */
-	protected $logger;
-
-	/** @var string */
-	protected $userId;
-
-	/** @var TimeFactory */
-	protected $timeFactory;
-	/** @var IAccountManager */
-	private $accountManager;
-
-	public function __construct($appName,
-								IRequest $request,
-								IAvatarManager $avatarManager,
-								ICache $cache,
-								IL10N $l10n,
-								IUserManager $userManager,
-								IRootFolder $rootFolder,
-								ILogger $logger,
-								$userId,
-								TimeFactory $timeFactory,
-								IAccountManager $accountManager) {
-		parent::__construct($appName, $request);
-
-		$this->avatarManager = $avatarManager;
-		$this->cache = $cache;
-		$this->l = $l10n;
-		$this->userManager = $userManager;
-		$this->rootFolder = $rootFolder;
-		$this->logger = $logger;
-		$this->userId = $userId;
-		$this->timeFactory = $timeFactory;
-		$this->accountManager = $accountManager;
-	}
-
-
-	/**
-	 * @NoAdminRequired
-	 * @NoCSRFRequired
-	 * @NoSameSiteCookieRequired
-	 * @PublicPage
-	 *
-	 * @param string $userId
-	 * @param int $size
-	 * @return JSONResponse|FileDisplayResponse
-	 */
-	public function getAvatar($userId, $size) {
-		// min/max size
-		if ($size > 2048) {
-			$size = 2048;
-		} elseif ($size <= 0) {
-			$size = 64;
-		}
-
-		$user = $this->userManager->get($userId);
-		if ($user === null) {
-			return new JSONResponse([], Http::STATUS_NOT_FOUND);
-		}
-
-		$account = $this->accountManager->getAccount($user);
-		$scope = $account->getProperty(IAccountManager::PROPERTY_AVATAR)->getScope();
-
-		if ($scope !== IAccountManager::VISIBILITY_PUBLIC && $this->userId === null) {
-			// Public avatar access is not allowed
-			$response = new JSONResponse([], Http::STATUS_NOT_FOUND);
-			$response->cacheFor(1800);
-			return $response;
-		}
-
-		try {
-			$avatar = $this->avatarManager->getAvatar($userId);
-			$avatarFile = $avatar->getFile($size);
-			$response = new FileDisplayResponse(
-				$avatarFile,
-				Http::STATUS_OK,
-				['Content-Type' => $avatarFile->getMimeType(), 'X-NC-IsCustomAvatar' => (int)$avatar->isCustomAvatar()]
-			);
-		} catch (\Exception $e) {
-			return new JSONResponse([], Http::STATUS_NOT_FOUND);
-		}
-
-		// Cache for 30 minutes
-		$response->cacheFor(1800);
-		return $response;
-	}
-
-	/**
-	 * @NoAdminRequired
-	 *
-	 * @param string $path
-	 * @return JSONResponse
-	 */
-	public function postAvatar($path) {
-		$files = $this->request->getUploadedFile('files');
-
-		if (isset($path)) {
-			$path = stripslashes($path);
-			$userFolder = $this->rootFolder->getUserFolder($this->userId);
-			/** @var File $node */
-			$node = $userFolder->get($path);
-			if (!($node instanceof File)) {
-				return new JSONResponse(['data' => ['message' => $this->l->t('Please select a file.')]]);
-			}
-			if ($node->getSize() > 20*1024*1024) {
-				return new JSONResponse(
-					['data' => ['message' => $this->l->t('File is too big')]],
-					Http::STATUS_BAD_REQUEST
-				);
-			}
-
-			if ($node->getMimeType() !== 'image/jpeg' && $node->getMimeType() !== 'image/png') {
-				return new JSONResponse(
-					['data' => ['message' => $this->l->t('The selected file is not an image.')]],
-					Http::STATUS_BAD_REQUEST
-				);
-			}
-
-			try {
-				$content = $node->getContent();
-			} catch (\OCP\Files\NotPermittedException $e) {
-				return new JSONResponse(
-					['data' => ['message' => $this->l->t('The selected file cannot be read.')]],
-					Http::STATUS_BAD_REQUEST
-				);
-			}
-		} elseif (!is_null($files)) {
-			if (
-				$files['error'][0] === 0 &&
-				 is_uploaded_file($files['tmp_name'][0]) &&
-				!\OC\Files\Filesystem::isFileBlacklisted($files['tmp_name'][0])
-			) {
-				if ($files['size'][0] > 20*1024*1024) {
-					return new JSONResponse(
-						['data' => ['message' => $this->l->t('File is too big')]],
-						Http::STATUS_BAD_REQUEST
-					);
-				}
-				$this->cache->set('avatar_upload', file_get_contents($files['tmp_name'][0]), 7200);
-				$content = $this->cache->get('avatar_upload');
-				unlink($files['tmp_name'][0]);
-			} else {
-				return new JSONResponse(
-					['data' => ['message' => $this->l->t('Invalid file provided')]],
-					Http::STATUS_BAD_REQUEST
-				);
-			}
-		} else {
-			//Add imgfile
-			return new JSONResponse(
-				['data' => ['message' => $this->l->t('No image or file provided')]],
-				Http::STATUS_BAD_REQUEST
-			);
-		}
-
-		try {
-			$image = new \OC_Image();
-			$image->loadFromData($content);
-			$image->readExif($content);
-			$image->fixOrientation();
-
-			if ($image->valid()) {
-				$mimeType = $image->mimeType();
-				if ($mimeType !== 'image/jpeg' && $mimeType !== 'image/png') {
-					return new JSONResponse(
-						['data' => ['message' => $this->l->t('Unknown filetype')]],
-						Http::STATUS_OK
-					);
-				}
-
-				$this->cache->set('tmpAvatar', $image->data(), 7200);
-				return new JSONResponse(
-					['data' => 'notsquare'],
-					Http::STATUS_OK
-				);
-			} else {
-				return new JSONResponse(
-					['data' => ['message' => $this->l->t('Invalid image')]],
-					Http::STATUS_OK
-				);
-			}
-		} catch (\Exception $e) {
-			$this->logger->logException($e, ['app' => 'core']);
-			return new JSONResponse(['data' => ['message' => $this->l->t('An error occurred. Please contact your admin.')]], Http::STATUS_OK);
-		}
-	}
-
-	/**
-	 * @NoAdminRequired
-	 *
-	 * @return JSONResponse
-	 */
-	public function deleteAvatar() {
-		try {
-			$avatar = $this->avatarManager->getAvatar($this->userId);
-			$avatar->remove();
-			return new JSONResponse();
-		} catch (\Exception $e) {
-			$this->logger->logException($e, ['app' => 'core']);
-			return new JSONResponse(['data' => ['message' => $this->l->t('An error occurred. Please contact your admin.')]], Http::STATUS_BAD_REQUEST);
-		}
-	}
-
-	/**
-	 * @NoAdminRequired
-	 *
-	 * @return JSONResponse|DataDisplayResponse
-	 */
-	public function getTmpAvatar() {
-		$tmpAvatar = $this->cache->get('tmpAvatar');
-		if (is_null($tmpAvatar)) {
-			return new JSONResponse(['data' => [
-										'message' => $this->l->t("No temporary profile picture available, try again")
-									]],
-									Http::STATUS_NOT_FOUND);
-		}
-
-		$image = new \OC_Image();
-		$image->loadFromData($tmpAvatar);
-
-		$resp = new DataDisplayResponse($image->data(),
-				Http::STATUS_OK,
-				['Content-Type' => $image->mimeType()]);
-
-		$resp->setETag((string)crc32($image->data()));
-		$resp->cacheFor(0);
-		$resp->setLastModified(new \DateTime('now', new \DateTimeZone('GMT')));
-		return $resp;
-	}
-
-	/**
-	 * @NoAdminRequired
-	 *
-	 * @param array $crop
-	 * @return JSONResponse
-	 */
-	public function postCroppedAvatar($crop) {
-		if (is_null($crop)) {
-			return new JSONResponse(['data' => ['message' => $this->l->t("No crop data provided")]],
-									Http::STATUS_BAD_REQUEST);
-		}
-
-		if (!isset($crop['x'], $crop['y'], $crop['w'], $crop['h'])) {
-			return new JSONResponse(['data' => ['message' => $this->l->t("No valid crop data provided")]],
-									Http::STATUS_BAD_REQUEST);
-		}
-
-		$tmpAvatar = $this->cache->get('tmpAvatar');
-		if (is_null($tmpAvatar)) {
-			return new JSONResponse(['data' => [
-										'message' => $this->l->t("No temporary profile picture available, try again")
-									]],
-									Http::STATUS_BAD_REQUEST);
-		}
-
-		$image = new \OC_Image();
-		$image->loadFromData($tmpAvatar);
-		$image->crop($crop['x'], $crop['y'], (int)round($crop['w']), (int)round($crop['h']));
-		try {
-			$avatar = $this->avatarManager->getAvatar($this->userId);
-			$avatar->set($image);
-			// Clean up
-			$this->cache->remove('tmpAvatar');
-			return new JSONResponse(['status' => 'success']);
-		} catch (\OC\NotSquareException $e) {
-			return new JSONResponse(['data' => ['message' => $this->l->t('Crop is not square')]],
-									Http::STATUS_BAD_REQUEST);
-		} catch (\Exception $e) {
-			$this->logger->logException($e, ['app' => 'core']);
-			return new JSONResponse(['data' => ['message' => $this->l->t('An error occurred. Please contact your admin.')]], Http::STATUS_BAD_REQUEST);
-		}
-	}
+    /** @var IAvatarManager */
+    protected $avatarManager;
+
+    /** @var ICache */
+    protected $cache;
+
+    /** @var IL10N */
+    protected $l;
+
+    /** @var IUserManager */
+    protected $userManager;
+
+    /** @var IUserSession */
+    protected $userSession;
+
+    /** @var IRootFolder */
+    protected $rootFolder;
+
+    /** @var ILogger */
+    protected $logger;
+
+    /** @var string */
+    protected $userId;
+
+    /** @var TimeFactory */
+    protected $timeFactory;
+    /** @var IAccountManager */
+    private $accountManager;
+
+    public function __construct($appName,
+                                IRequest $request,
+                                IAvatarManager $avatarManager,
+                                ICache $cache,
+                                IL10N $l10n,
+                                IUserManager $userManager,
+                                IRootFolder $rootFolder,
+                                ILogger $logger,
+                                $userId,
+                                TimeFactory $timeFactory,
+                                IAccountManager $accountManager) {
+        parent::__construct($appName, $request);
+
+        $this->avatarManager = $avatarManager;
+        $this->cache = $cache;
+        $this->l = $l10n;
+        $this->userManager = $userManager;
+        $this->rootFolder = $rootFolder;
+        $this->logger = $logger;
+        $this->userId = $userId;
+        $this->timeFactory = $timeFactory;
+        $this->accountManager = $accountManager;
+    }
+
+
+    /**
+     * @NoAdminRequired
+     * @NoCSRFRequired
+     * @NoSameSiteCookieRequired
+     * @PublicPage
+     *
+     * @param string $userId
+     * @param int $size
+     * @return JSONResponse|FileDisplayResponse
+     */
+    public function getAvatar($userId, $size) {
+        // min/max size
+        if ($size > 2048) {
+            $size = 2048;
+        } elseif ($size <= 0) {
+            $size = 64;
+        }
+
+        $user = $this->userManager->get($userId);
+        if ($user === null) {
+            return new JSONResponse([], Http::STATUS_NOT_FOUND);
+        }
+
+        $account = $this->accountManager->getAccount($user);
+        $scope = $account->getProperty(IAccountManager::PROPERTY_AVATAR)->getScope();
+
+        if ($scope !== IAccountManager::VISIBILITY_PUBLIC && $this->userId === null) {
+            // Public avatar access is not allowed
+            $response = new JSONResponse([], Http::STATUS_NOT_FOUND);
+            $response->cacheFor(1800);
+            return $response;
+        }
+
+        try {
+            $avatar = $this->avatarManager->getAvatar($userId);
+            $avatarFile = $avatar->getFile($size);
+            $response = new FileDisplayResponse(
+                $avatarFile,
+                Http::STATUS_OK,
+                ['Content-Type' => $avatarFile->getMimeType(), 'X-NC-IsCustomAvatar' => (int)$avatar->isCustomAvatar()]
+            );
+        } catch (\Exception $e) {
+            return new JSONResponse([], Http::STATUS_NOT_FOUND);
+        }
+
+        // Cache for 30 minutes
+        $response->cacheFor(1800);
+        return $response;
+    }
+
+    /**
+     * @NoAdminRequired
+     *
+     * @param string $path
+     * @return JSONResponse
+     */
+    public function postAvatar($path) {
+        $files = $this->request->getUploadedFile('files');
+
+        if (isset($path)) {
+            $path = stripslashes($path);
+            $userFolder = $this->rootFolder->getUserFolder($this->userId);
+            /** @var File $node */
+            $node = $userFolder->get($path);
+            if (!($node instanceof File)) {
+                return new JSONResponse(['data' => ['message' => $this->l->t('Please select a file.')]]);
+            }
+            if ($node->getSize() > 20*1024*1024) {
+                return new JSONResponse(
+                    ['data' => ['message' => $this->l->t('File is too big')]],
+                    Http::STATUS_BAD_REQUEST
+                );
+            }
+
+            if ($node->getMimeType() !== 'image/jpeg' && $node->getMimeType() !== 'image/png') {
+                return new JSONResponse(
+                    ['data' => ['message' => $this->l->t('The selected file is not an image.')]],
+                    Http::STATUS_BAD_REQUEST
+                );
+            }
+
+            try {
+                $content = $node->getContent();
+            } catch (\OCP\Files\NotPermittedException $e) {
+                return new JSONResponse(
+                    ['data' => ['message' => $this->l->t('The selected file cannot be read.')]],
+                    Http::STATUS_BAD_REQUEST
+                );
+            }
+        } elseif (!is_null($files)) {
+            if (
+                $files['error'][0] === 0 &&
+                 is_uploaded_file($files['tmp_name'][0]) &&
+                !\OC\Files\Filesystem::isFileBlacklisted($files['tmp_name'][0])
+            ) {
+                if ($files['size'][0] > 20*1024*1024) {
+                    return new JSONResponse(
+                        ['data' => ['message' => $this->l->t('File is too big')]],
+                        Http::STATUS_BAD_REQUEST
+                    );
+                }
+                $this->cache->set('avatar_upload', file_get_contents($files['tmp_name'][0]), 7200);
+                $content = $this->cache->get('avatar_upload');
+                unlink($files['tmp_name'][0]);
+            } else {
+                return new JSONResponse(
+                    ['data' => ['message' => $this->l->t('Invalid file provided')]],
+                    Http::STATUS_BAD_REQUEST
+                );
+            }
+        } else {
+            //Add imgfile
+            return new JSONResponse(
+                ['data' => ['message' => $this->l->t('No image or file provided')]],
+                Http::STATUS_BAD_REQUEST
+            );
+        }
+
+        try {
+            $image = new \OC_Image();
+            $image->loadFromData($content);
+            $image->readExif($content);
+            $image->fixOrientation();
+
+            if ($image->valid()) {
+                $mimeType = $image->mimeType();
+                if ($mimeType !== 'image/jpeg' && $mimeType !== 'image/png') {
+                    return new JSONResponse(
+                        ['data' => ['message' => $this->l->t('Unknown filetype')]],
+                        Http::STATUS_OK
+                    );
+                }
+
+                $this->cache->set('tmpAvatar', $image->data(), 7200);
+                return new JSONResponse(
+                    ['data' => 'notsquare'],
+                    Http::STATUS_OK
+                );
+            } else {
+                return new JSONResponse(
+                    ['data' => ['message' => $this->l->t('Invalid image')]],
+                    Http::STATUS_OK
+                );
+            }
+        } catch (\Exception $e) {
+            $this->logger->logException($e, ['app' => 'core']);
+            return new JSONResponse(['data' => ['message' => $this->l->t('An error occurred. Please contact your admin.')]], Http::STATUS_OK);
+        }
+    }
+
+    /**
+     * @NoAdminRequired
+     *
+     * @return JSONResponse
+     */
+    public function deleteAvatar() {
+        try {
+            $avatar = $this->avatarManager->getAvatar($this->userId);
+            $avatar->remove();
+            return new JSONResponse();
+        } catch (\Exception $e) {
+            $this->logger->logException($e, ['app' => 'core']);
+            return new JSONResponse(['data' => ['message' => $this->l->t('An error occurred. Please contact your admin.')]], Http::STATUS_BAD_REQUEST);
+        }
+    }
+
+    /**
+     * @NoAdminRequired
+     *
+     * @return JSONResponse|DataDisplayResponse
+     */
+    public function getTmpAvatar() {
+        $tmpAvatar = $this->cache->get('tmpAvatar');
+        if (is_null($tmpAvatar)) {
+            return new JSONResponse(['data' => [
+                                        'message' => $this->l->t("No temporary profile picture available, try again")
+                                    ]],
+                                    Http::STATUS_NOT_FOUND);
+        }
+
+        $image = new \OC_Image();
+        $image->loadFromData($tmpAvatar);
+
+        $resp = new DataDisplayResponse($image->data(),
+                Http::STATUS_OK,
+                ['Content-Type' => $image->mimeType()]);
+
+        $resp->setETag((string)crc32($image->data()));
+        $resp->cacheFor(0);
+        $resp->setLastModified(new \DateTime('now', new \DateTimeZone('GMT')));
+        return $resp;
+    }
+
+    /**
+     * @NoAdminRequired
+     *
+     * @param array $crop
+     * @return JSONResponse
+     */
+    public function postCroppedAvatar($crop) {
+        if (is_null($crop)) {
+            return new JSONResponse(['data' => ['message' => $this->l->t("No crop data provided")]],
+                                    Http::STATUS_BAD_REQUEST);
+        }
+
+        if (!isset($crop['x'], $crop['y'], $crop['w'], $crop['h'])) {
+            return new JSONResponse(['data' => ['message' => $this->l->t("No valid crop data provided")]],
+                                    Http::STATUS_BAD_REQUEST);
+        }
+
+        $tmpAvatar = $this->cache->get('tmpAvatar');
+        if (is_null($tmpAvatar)) {
+            return new JSONResponse(['data' => [
+                                        'message' => $this->l->t("No temporary profile picture available, try again")
+                                    ]],
+                                    Http::STATUS_BAD_REQUEST);
+        }
+
+        $image = new \OC_Image();
+        $image->loadFromData($tmpAvatar);
+        $image->crop($crop['x'], $crop['y'], (int)round($crop['w']), (int)round($crop['h']));
+        try {
+            $avatar = $this->avatarManager->getAvatar($this->userId);
+            $avatar->set($image);
+            // Clean up
+            $this->cache->remove('tmpAvatar');
+            return new JSONResponse(['status' => 'success']);
+        } catch (\OC\NotSquareException $e) {
+            return new JSONResponse(['data' => ['message' => $this->l->t('Crop is not square')]],
+                                    Http::STATUS_BAD_REQUEST);
+        } catch (\Exception $e) {
+            $this->logger->logException($e, ['app' => 'core']);
+            return new JSONResponse(['data' => ['message' => $this->l->t('An error occurred. Please contact your admin.')]], Http::STATUS_BAD_REQUEST);
+        }
+    }
 }