Dolibarr / dolibarr

htdocs/includes/sabre/sabre/dav/lib/DAVACL/PrincipalBackend/CreatePrincipalSupport.php

Indentation +10 added lines, -10 removed lines

@@ -16,14 +16,14 @@
  */
 interface CreatePrincipalSupport extends BackendInterface
 {
-    /**
-     * Creates a new principal.
-     *
-     * This method receives a full path for the new principal. The mkCol object
-     * contains any additional webdav properties specified during the creation
-     * of the principal.
-     *
-     * @param string $path
-     */
-    public function createPrincipal($path, MkCol $mkCol);
+	/**
+	 * Creates a new principal.
+	 *
+	 * This method receives a full path for the new principal. The mkCol object
+	 * contains any additional webdav properties specified during the creation
+	 * of the principal.
+	 *
+	 * @param string $path
+	 */
+	public function createPrincipal($path, MkCol $mkCol);
 }

htdocs/includes/sabre/sabre/dav/lib/DAVACL/PrincipalBackend/AbstractBackend.php

Indentation +33 added lines, -33 removed lines

@@ -17,38 +17,38 @@
  */
 abstract class AbstractBackend implements BackendInterface
 {
-    /**
-     * Finds a principal by its URI.
-     *
-     * This method may receive any type of uri, but mailto: addresses will be
-     * the most common.
-     *
-     * Implementation of this API is optional. It is currently used by the
-     * CalDAV system to find principals based on their email addresses. If this
-     * API is not implemented, some features may not work correctly.
-     *
-     * This method must return a relative principal path, or null, if the
-     * principal was not found or you refuse to find it.
-     *
-     * @param string $uri
-     * @param string $principalPrefix
-     *
-     * @return string|null
-     */
-    public function findByUri($uri, $principalPrefix)
-    {
-        // Note that the default implementation here is a bit slow and could
-        // likely be optimized.
-        if ('mailto:' !== substr($uri, 0, 7)) {
-            return;
-        }
-        $result = $this->searchPrincipals(
-            $principalPrefix,
-            ['{http://sabredav.org/ns}email-address' => substr($uri, 7)]
-        );
+	/**
+	 * Finds a principal by its URI.
+	 *
+	 * This method may receive any type of uri, but mailto: addresses will be
+	 * the most common.
+	 *
+	 * Implementation of this API is optional. It is currently used by the
+	 * CalDAV system to find principals based on their email addresses. If this
+	 * API is not implemented, some features may not work correctly.
+	 *
+	 * This method must return a relative principal path, or null, if the
+	 * principal was not found or you refuse to find it.
+	 *
+	 * @param string $uri
+	 * @param string $principalPrefix
+	 *
+	 * @return string|null
+	 */
+	public function findByUri($uri, $principalPrefix)
+	{
+		// Note that the default implementation here is a bit slow and could
+		// likely be optimized.
+		if ('mailto:' !== substr($uri, 0, 7)) {
+			return;
+		}
+		$result = $this->searchPrincipals(
+			$principalPrefix,
+			['{http://sabredav.org/ns}email-address' => substr($uri, 7)]
+		);
 
-        if ($result) {
-            return $result[0];
-        }
-    }
+		if ($result) {
+			return $result[0];
+		}
+	}
 }

htdocs/includes/sabre/sabre/dav/lib/DAVACL/PrincipalBackend/PDO.php

Indentation +415 added lines, -415 removed lines

@@ -20,424 +20,424 @@
  */
 class PDO extends AbstractBackend implements CreatePrincipalSupport
 {
-    /**
-     * PDO table name for 'principals'.
-     *
-     * @var string
-     */
-    public $tableName = 'principals';
-
-    /**
-     * PDO table name for 'group members'.
-     *
-     * @var string
-     */
-    public $groupMembersTableName = 'groupmembers';
-
-    /**
-     * pdo.
-     *
-     * @var PDO
-     */
-    protected $pdo;
-
-    /**
-     * A list of additional fields to support.
-     *
-     * @var array
-     */
-    protected $fieldMap = [
-        /*
+	/**
+	 * PDO table name for 'principals'.
+	 *
+	 * @var string
+	 */
+	public $tableName = 'principals';
+
+	/**
+	 * PDO table name for 'group members'.
+	 *
+	 * @var string
+	 */
+	public $groupMembersTableName = 'groupmembers';
+
+	/**
+	 * pdo.
+	 *
+	 * @var PDO
+	 */
+	protected $pdo;
+
+	/**
+	 * A list of additional fields to support.
+	 *
+	 * @var array
+	 */
+	protected $fieldMap = [
+		/*
          * This property can be used to display the users' real name.
          */
-        '{DAV:}displayname' => [
-            'dbField' => 'displayname',
-        ],
+		'{DAV:}displayname' => [
+			'dbField' => 'displayname',
+		],
 
-        /*
+		/*
          * This is the users' primary email-address.
          */
-        '{http://sabredav.org/ns}email-address' => [
-            'dbField' => 'email',
-        ],
-    ];
-
-    /**
-     * Sets up the backend.
-     */
-    public function __construct(\PDO $pdo)
-    {
-        $this->pdo = $pdo;
-    }
-
-    /**
-     * Returns a list of principals based on a prefix.
-     *
-     * This prefix will often contain something like 'principals'. You are only
-     * expected to return principals that are in this base path.
-     *
-     * You are expected to return at least a 'uri' for every user, you can
-     * return any additional properties if you wish so. Common properties are:
-     *   {DAV:}displayname
-     *   {http://sabredav.org/ns}email-address - This is a custom SabreDAV
-     *     field that's actualy injected in a number of other properties. If
-     *     you have an email address, use this property.
-     *
-     * @param string $prefixPath
-     *
-     * @return array
-     */
-    public function getPrincipalsByPrefix($prefixPath)
-    {
-        $fields = [
-            'uri',
-        ];
-
-        foreach ($this->fieldMap as $key => $value) {
-            $fields[] = $value['dbField'];
-        }
-        $result = $this->pdo->query('SELECT '.implode(',', $fields).'  FROM '.$this->tableName);
-
-        $principals = [];
-
-        while ($row = $result->fetch(\PDO::FETCH_ASSOC)) {
-            // Checking if the principal is in the prefix
-            list($rowPrefix) = Uri\split($row['uri']);
-            if ($rowPrefix !== $prefixPath) {
-                continue;
-            }
-
-            $principal = [
-                'uri' => $row['uri'],
-            ];
-            foreach ($this->fieldMap as $key => $value) {
-                if ($row[$value['dbField']]) {
-                    $principal[$key] = $row[$value['dbField']];
-                }
-            }
-            $principals[] = $principal;
-        }
-
-        return $principals;
-    }
-
-    /**
-     * Returns a specific principal, specified by it's path.
-     * The returned structure should be the exact same as from
-     * getPrincipalsByPrefix.
-     *
-     * @param string $path
-     *
-     * @return array
-     */
-    public function getPrincipalByPath($path)
-    {
-        $fields = [
-            'id',
-            'uri',
-        ];
-
-        foreach ($this->fieldMap as $key => $value) {
-            $fields[] = $value['dbField'];
-        }
-        $stmt = $this->pdo->prepare('SELECT '.implode(',', $fields).'  FROM '.$this->tableName.' WHERE uri = ?');
-        $stmt->execute([$path]);
-
-        $row = $stmt->fetch(\PDO::FETCH_ASSOC);
-        if (!$row) {
-            return;
-        }
-
-        $principal = [
-            'id' => $row['id'],
-            'uri' => $row['uri'],
-        ];
-        foreach ($this->fieldMap as $key => $value) {
-            if ($row[$value['dbField']]) {
-                $principal[$key] = $row[$value['dbField']];
-            }
-        }
-
-        return $principal;
-    }
-
-    /**
-     * Updates one ore more webdav properties on a principal.
-     *
-     * The list of mutations is stored in a Sabre\DAV\PropPatch object.
-     * To do the actual updates, you must tell this object which properties
-     * you're going to process with the handle() method.
-     *
-     * Calling the handle method is like telling the PropPatch object "I
-     * promise I can handle updating this property".
-     *
-     * Read the PropPatch documentation for more info and examples.
-     *
-     * @param string $path
-     */
-    public function updatePrincipal($path, DAV\PropPatch $propPatch)
-    {
-        $propPatch->handle(array_keys($this->fieldMap), function ($properties) use ($path) {
-            $query = 'UPDATE '.$this->tableName.' SET ';
-            $first = true;
-
-            $values = [];
-
-            foreach ($properties as $key => $value) {
-                $dbField = $this->fieldMap[$key]['dbField'];
-
-                if (!$first) {
-                    $query .= ', ';
-                }
-                $first = false;
-                $query .= $dbField.' = :'.$dbField;
-                $values[$dbField] = $value;
-            }
-
-            $query .= ' WHERE uri = :uri';
-            $values['uri'] = $path;
-
-            $stmt = $this->pdo->prepare($query);
-            $stmt->execute($values);
-
-            return true;
-        });
-    }
-
-    /**
-     * This method is used to search for principals matching a set of
-     * properties.
-     *
-     * This search is specifically used by RFC3744's principal-property-search
-     * REPORT.
-     *
-     * The actual search should be a unicode-non-case-sensitive search. The
-     * keys in searchProperties are the WebDAV property names, while the values
-     * are the property values to search on.
-     *
-     * By default, if multiple properties are submitted to this method, the
-     * various properties should be combined with 'AND'. If $test is set to
-     * 'anyof', it should be combined using 'OR'.
-     *
-     * This method should simply return an array with full principal uri's.
-     *
-     * If somebody attempted to search on a property the backend does not
-     * support, you should simply return 0 results.
-     *
-     * You can also just return 0 results if you choose to not support
-     * searching at all, but keep in mind that this may stop certain features
-     * from working.
-     *
-     * @param string $prefixPath
-     * @param string $test
-     *
-     * @return array
-     */
-    public function searchPrincipals($prefixPath, array $searchProperties, $test = 'allof')
-    {
-        if (0 == count($searchProperties)) {
-            return [];
-        }    //No criteria
-
-        $query = 'SELECT uri FROM '.$this->tableName.' WHERE ';
-        $values = [];
-        foreach ($searchProperties as $property => $value) {
-            switch ($property) {
-                case '{DAV:}displayname':
-                    $column = 'displayname';
-                    break;
-                case '{http://sabredav.org/ns}email-address':
-                    $column = 'email';
-                    break;
-                default:
-                    // Unsupported property
-                    return [];
-            }
-            if (count($values) > 0) {
-                $query .= (0 == strcmp($test, 'anyof') ? ' OR ' : ' AND ');
-            }
-            $query .= 'lower('.$column.') LIKE lower(?)';
-            $values[] = '%'.$value.'%';
-        }
-        $stmt = $this->pdo->prepare($query);
-        $stmt->execute($values);
-
-        $principals = [];
-        while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-            // Checking if the principal is in the prefix
-            list($rowPrefix) = Uri\split($row['uri']);
-            if ($rowPrefix !== $prefixPath) {
-                continue;
-            }
-
-            $principals[] = $row['uri'];
-        }
-
-        return $principals;
-    }
-
-    /**
-     * Finds a principal by its URI.
-     *
-     * This method may receive any type of uri, but mailto: addresses will be
-     * the most common.
-     *
-     * Implementation of this API is optional. It is currently used by the
-     * CalDAV system to find principals based on their email addresses. If this
-     * API is not implemented, some features may not work correctly.
-     *
-     * This method must return a relative principal path, or null, if the
-     * principal was not found or you refuse to find it.
-     *
-     * @param string $uri
-     * @param string $principalPrefix
-     *
-     * @return string
-     */
-    public function findByUri($uri, $principalPrefix)
-    {
-        $uriParts = Uri\parse($uri);
-
-        // Only two types of uri are supported :
-        //   - the "mailto:" scheme with some non-empty address
-        //   - a principals uri, in the form "principals/NAME"
-        // In both cases, `path` must not be empty.
-        if (empty($uriParts['path'])) {
-            return null;
-        }
-
-        $uri = null;
-        if ('mailto' === $uriParts['scheme']) {
-            $query = 'SELECT uri FROM '.$this->tableName.' WHERE lower(email)=lower(?)';
-            $stmt = $this->pdo->prepare($query);
-            $stmt->execute([$uriParts['path']]);
-
-            while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-                // Checking if the principal is in the prefix
-                list($rowPrefix) = Uri\split($row['uri']);
-                if ($rowPrefix !== $principalPrefix) {
-                    continue;
-                }
-
-                $uri = $row['uri'];
-                break; //Stop on first match
-            }
-        } else {
-            $pathParts = Uri\split($uriParts['path']); // We can do this since $uriParts['path'] is not null
-
-            if (2 === count($pathParts) && $pathParts[0] === $principalPrefix) {
-                // Checking that this uri exists
-                $query = 'SELECT * FROM '.$this->tableName.' WHERE uri = ?';
-                $stmt = $this->pdo->prepare($query);
-                $stmt->execute([$uriParts['path']]);
-                $rows = $stmt->fetchAll();
-
-                if (count($rows) > 0) {
-                    $uri = $uriParts['path'];
-                }
-            }
-        }
-
-        return $uri;
-    }
-
-    /**
-     * Returns the list of members for a group-principal.
-     *
-     * @param string $principal
-     *
-     * @return array
-     */
-    public function getGroupMemberSet($principal)
-    {
-        $principal = $this->getPrincipalByPath($principal);
-        if (!$principal) {
-            throw new DAV\Exception('Principal not found');
-        }
-        $stmt = $this->pdo->prepare('SELECT principals.uri as uri FROM '.$this->groupMembersTableName.' AS groupmembers LEFT JOIN '.$this->tableName.' AS principals ON groupmembers.member_id = principals.id WHERE groupmembers.principal_id = ?');
-        $stmt->execute([$principal['id']]);
-
-        $result = [];
-        while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-            $result[] = $row['uri'];
-        }
-
-        return $result;
-    }
-
-    /**
-     * Returns the list of groups a principal is a member of.
-     *
-     * @param string $principal
-     *
-     * @return array
-     */
-    public function getGroupMembership($principal)
-    {
-        $principal = $this->getPrincipalByPath($principal);
-        if (!$principal) {
-            throw new DAV\Exception('Principal not found');
-        }
-        $stmt = $this->pdo->prepare('SELECT principals.uri as uri FROM '.$this->groupMembersTableName.' AS groupmembers LEFT JOIN '.$this->tableName.' AS principals ON groupmembers.principal_id = principals.id WHERE groupmembers.member_id = ?');
-        $stmt->execute([$principal['id']]);
-
-        $result = [];
-        while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-            $result[] = $row['uri'];
-        }
-
-        return $result;
-    }
-
-    /**
-     * Updates the list of group members for a group principal.
-     *
-     * The principals should be passed as a list of uri's.
-     *
-     * @param string $principal
-     */
-    public function setGroupMemberSet($principal, array $members)
-    {
-        // Grabbing the list of principal id's.
-        $stmt = $this->pdo->prepare('SELECT id, uri FROM '.$this->tableName.' WHERE uri IN (? '.str_repeat(', ? ', count($members)).');');
-        $stmt->execute(array_merge([$principal], $members));
-
-        $memberIds = [];
-        $principalId = null;
-
-        while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-            if ($row['uri'] == $principal) {
-                $principalId = $row['id'];
-            } else {
-                $memberIds[] = $row['id'];
-            }
-        }
-        if (!$principalId) {
-            throw new DAV\Exception('Principal not found');
-        }
-        // Wiping out old members
-        $stmt = $this->pdo->prepare('DELETE FROM '.$this->groupMembersTableName.' WHERE principal_id = ?;');
-        $stmt->execute([$principalId]);
-
-        foreach ($memberIds as $memberId) {
-            $stmt = $this->pdo->prepare('INSERT INTO '.$this->groupMembersTableName.' (principal_id, member_id) VALUES (?, ?);');
-            $stmt->execute([$principalId, $memberId]);
-        }
-    }
-
-    /**
-     * Creates a new principal.
-     *
-     * This method receives a full path for the new principal. The mkCol object
-     * contains any additional webdav properties specified during the creation
-     * of the principal.
-     *
-     * @param string $path
-     */
-    public function createPrincipal($path, MkCol $mkCol)
-    {
-        $stmt = $this->pdo->prepare('INSERT INTO '.$this->tableName.' (uri) VALUES (?)');
-        $stmt->execute([$path]);
-        $this->updatePrincipal($path, $mkCol);
-    }
+		'{http://sabredav.org/ns}email-address' => [
+			'dbField' => 'email',
+		],
+	];
+
+	/**
+	 * Sets up the backend.
+	 */
+	public function __construct(\PDO $pdo)
+	{
+		$this->pdo = $pdo;
+	}
+
+	/**
+	 * Returns a list of principals based on a prefix.
+	 *
+	 * This prefix will often contain something like 'principals'. You are only
+	 * expected to return principals that are in this base path.
+	 *
+	 * You are expected to return at least a 'uri' for every user, you can
+	 * return any additional properties if you wish so. Common properties are:
+	 *   {DAV:}displayname
+	 *   {http://sabredav.org/ns}email-address - This is a custom SabreDAV
+	 *     field that's actualy injected in a number of other properties. If
+	 *     you have an email address, use this property.
+	 *
+	 * @param string $prefixPath
+	 *
+	 * @return array
+	 */
+	public function getPrincipalsByPrefix($prefixPath)
+	{
+		$fields = [
+			'uri',
+		];
+
+		foreach ($this->fieldMap as $key => $value) {
+			$fields[] = $value['dbField'];
+		}
+		$result = $this->pdo->query('SELECT '.implode(',', $fields).'  FROM '.$this->tableName);
+
+		$principals = [];
+
+		while ($row = $result->fetch(\PDO::FETCH_ASSOC)) {
+			// Checking if the principal is in the prefix
+			list($rowPrefix) = Uri\split($row['uri']);
+			if ($rowPrefix !== $prefixPath) {
+				continue;
+			}
+
+			$principal = [
+				'uri' => $row['uri'],
+			];
+			foreach ($this->fieldMap as $key => $value) {
+				if ($row[$value['dbField']]) {
+					$principal[$key] = $row[$value['dbField']];
+				}
+			}
+			$principals[] = $principal;
+		}
+
+		return $principals;
+	}
+
+	/**
+	 * Returns a specific principal, specified by it's path.
+	 * The returned structure should be the exact same as from
+	 * getPrincipalsByPrefix.
+	 *
+	 * @param string $path
+	 *
+	 * @return array
+	 */
+	public function getPrincipalByPath($path)
+	{
+		$fields = [
+			'id',
+			'uri',
+		];
+
+		foreach ($this->fieldMap as $key => $value) {
+			$fields[] = $value['dbField'];
+		}
+		$stmt = $this->pdo->prepare('SELECT '.implode(',', $fields).'  FROM '.$this->tableName.' WHERE uri = ?');
+		$stmt->execute([$path]);
+
+		$row = $stmt->fetch(\PDO::FETCH_ASSOC);
+		if (!$row) {
+			return;
+		}
+
+		$principal = [
+			'id' => $row['id'],
+			'uri' => $row['uri'],
+		];
+		foreach ($this->fieldMap as $key => $value) {
+			if ($row[$value['dbField']]) {
+				$principal[$key] = $row[$value['dbField']];
+			}
+		}
+
+		return $principal;
+	}
+
+	/**
+	 * Updates one ore more webdav properties on a principal.
+	 *
+	 * The list of mutations is stored in a Sabre\DAV\PropPatch object.
+	 * To do the actual updates, you must tell this object which properties
+	 * you're going to process with the handle() method.
+	 *
+	 * Calling the handle method is like telling the PropPatch object "I
+	 * promise I can handle updating this property".
+	 *
+	 * Read the PropPatch documentation for more info and examples.
+	 *
+	 * @param string $path
+	 */
+	public function updatePrincipal($path, DAV\PropPatch $propPatch)
+	{
+		$propPatch->handle(array_keys($this->fieldMap), function ($properties) use ($path) {
+			$query = 'UPDATE '.$this->tableName.' SET ';
+			$first = true;
+
+			$values = [];
+
+			foreach ($properties as $key => $value) {
+				$dbField = $this->fieldMap[$key]['dbField'];
+
+				if (!$first) {
+					$query .= ', ';
+				}
+				$first = false;
+				$query .= $dbField.' = :'.$dbField;
+				$values[$dbField] = $value;
+			}
+
+			$query .= ' WHERE uri = :uri';
+			$values['uri'] = $path;
+
+			$stmt = $this->pdo->prepare($query);
+			$stmt->execute($values);
+
+			return true;
+		});
+	}
+
+	/**
+	 * This method is used to search for principals matching a set of
+	 * properties.
+	 *
+	 * This search is specifically used by RFC3744's principal-property-search
+	 * REPORT.
+	 *
+	 * The actual search should be a unicode-non-case-sensitive search. The
+	 * keys in searchProperties are the WebDAV property names, while the values
+	 * are the property values to search on.
+	 *
+	 * By default, if multiple properties are submitted to this method, the
+	 * various properties should be combined with 'AND'. If $test is set to
+	 * 'anyof', it should be combined using 'OR'.
+	 *
+	 * This method should simply return an array with full principal uri's.
+	 *
+	 * If somebody attempted to search on a property the backend does not
+	 * support, you should simply return 0 results.
+	 *
+	 * You can also just return 0 results if you choose to not support
+	 * searching at all, but keep in mind that this may stop certain features
+	 * from working.
+	 *
+	 * @param string $prefixPath
+	 * @param string $test
+	 *
+	 * @return array
+	 */
+	public function searchPrincipals($prefixPath, array $searchProperties, $test = 'allof')
+	{
+		if (0 == count($searchProperties)) {
+			return [];
+		}    //No criteria
+
+		$query = 'SELECT uri FROM '.$this->tableName.' WHERE ';
+		$values = [];
+		foreach ($searchProperties as $property => $value) {
+			switch ($property) {
+				case '{DAV:}displayname':
+					$column = 'displayname';
+					break;
+				case '{http://sabredav.org/ns}email-address':
+					$column = 'email';
+					break;
+				default:
+					// Unsupported property
+					return [];
+			}
+			if (count($values) > 0) {
+				$query .= (0 == strcmp($test, 'anyof') ? ' OR ' : ' AND ');
+			}
+			$query .= 'lower('.$column.') LIKE lower(?)';
+			$values[] = '%'.$value.'%';
+		}
+		$stmt = $this->pdo->prepare($query);
+		$stmt->execute($values);
+
+		$principals = [];
+		while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+			// Checking if the principal is in the prefix
+			list($rowPrefix) = Uri\split($row['uri']);
+			if ($rowPrefix !== $prefixPath) {
+				continue;
+			}
+
+			$principals[] = $row['uri'];
+		}
+
+		return $principals;
+	}
+
+	/**
+	 * Finds a principal by its URI.
+	 *
+	 * This method may receive any type of uri, but mailto: addresses will be
+	 * the most common.
+	 *
+	 * Implementation of this API is optional. It is currently used by the
+	 * CalDAV system to find principals based on their email addresses. If this
+	 * API is not implemented, some features may not work correctly.
+	 *
+	 * This method must return a relative principal path, or null, if the
+	 * principal was not found or you refuse to find it.
+	 *
+	 * @param string $uri
+	 * @param string $principalPrefix
+	 *
+	 * @return string
+	 */
+	public function findByUri($uri, $principalPrefix)
+	{
+		$uriParts = Uri\parse($uri);
+
+		// Only two types of uri are supported :
+		//   - the "mailto:" scheme with some non-empty address
+		//   - a principals uri, in the form "principals/NAME"
+		// In both cases, `path` must not be empty.
+		if (empty($uriParts['path'])) {
+			return null;
+		}
+
+		$uri = null;
+		if ('mailto' === $uriParts['scheme']) {
+			$query = 'SELECT uri FROM '.$this->tableName.' WHERE lower(email)=lower(?)';
+			$stmt = $this->pdo->prepare($query);
+			$stmt->execute([$uriParts['path']]);
+
+			while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+				// Checking if the principal is in the prefix
+				list($rowPrefix) = Uri\split($row['uri']);
+				if ($rowPrefix !== $principalPrefix) {
+					continue;
+				}
+
+				$uri = $row['uri'];
+				break; //Stop on first match
+			}
+		} else {
+			$pathParts = Uri\split($uriParts['path']); // We can do this since $uriParts['path'] is not null
+
+			if (2 === count($pathParts) && $pathParts[0] === $principalPrefix) {
+				// Checking that this uri exists
+				$query = 'SELECT * FROM '.$this->tableName.' WHERE uri = ?';
+				$stmt = $this->pdo->prepare($query);
+				$stmt->execute([$uriParts['path']]);
+				$rows = $stmt->fetchAll();
+
+				if (count($rows) > 0) {
+					$uri = $uriParts['path'];
+				}
+			}
+		}
+
+		return $uri;
+	}
+
+	/**
+	 * Returns the list of members for a group-principal.
+	 *
+	 * @param string $principal
+	 *
+	 * @return array
+	 */
+	public function getGroupMemberSet($principal)
+	{
+		$principal = $this->getPrincipalByPath($principal);
+		if (!$principal) {
+			throw new DAV\Exception('Principal not found');
+		}
+		$stmt = $this->pdo->prepare('SELECT principals.uri as uri FROM '.$this->groupMembersTableName.' AS groupmembers LEFT JOIN '.$this->tableName.' AS principals ON groupmembers.member_id = principals.id WHERE groupmembers.principal_id = ?');
+		$stmt->execute([$principal['id']]);
+
+		$result = [];
+		while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+			$result[] = $row['uri'];
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Returns the list of groups a principal is a member of.
+	 *
+	 * @param string $principal
+	 *
+	 * @return array
+	 */
+	public function getGroupMembership($principal)
+	{
+		$principal = $this->getPrincipalByPath($principal);
+		if (!$principal) {
+			throw new DAV\Exception('Principal not found');
+		}
+		$stmt = $this->pdo->prepare('SELECT principals.uri as uri FROM '.$this->groupMembersTableName.' AS groupmembers LEFT JOIN '.$this->tableName.' AS principals ON groupmembers.principal_id = principals.id WHERE groupmembers.member_id = ?');
+		$stmt->execute([$principal['id']]);
+
+		$result = [];
+		while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+			$result[] = $row['uri'];
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Updates the list of group members for a group principal.
+	 *
+	 * The principals should be passed as a list of uri's.
+	 *
+	 * @param string $principal
+	 */
+	public function setGroupMemberSet($principal, array $members)
+	{
+		// Grabbing the list of principal id's.
+		$stmt = $this->pdo->prepare('SELECT id, uri FROM '.$this->tableName.' WHERE uri IN (? '.str_repeat(', ? ', count($members)).');');
+		$stmt->execute(array_merge([$principal], $members));
+
+		$memberIds = [];
+		$principalId = null;
+
+		while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+			if ($row['uri'] == $principal) {
+				$principalId = $row['id'];
+			} else {
+				$memberIds[] = $row['id'];
+			}
+		}
+		if (!$principalId) {
+			throw new DAV\Exception('Principal not found');
+		}
+		// Wiping out old members
+		$stmt = $this->pdo->prepare('DELETE FROM '.$this->groupMembersTableName.' WHERE principal_id = ?;');
+		$stmt->execute([$principalId]);
+
+		foreach ($memberIds as $memberId) {
+			$stmt = $this->pdo->prepare('INSERT INTO '.$this->groupMembersTableName.' (principal_id, member_id) VALUES (?, ?);');
+			$stmt->execute([$principalId, $memberId]);
+		}
+	}
+
+	/**
+	 * Creates a new principal.
+	 *
+	 * This method receives a full path for the new principal. The mkCol object
+	 * contains any additional webdav properties specified during the creation
+	 * of the principal.
+	 *
+	 * @param string $path
+	 */
+	public function createPrincipal($path, MkCol $mkCol)
+	{
+		$stmt = $this->pdo->prepare('INSERT INTO '.$this->tableName.' (uri) VALUES (?)');
+		$stmt->execute([$path]);
+		$this->updatePrincipal($path, $mkCol);
+	}
 }

htdocs/includes/sabre/sabre/dav/lib/DAVACL/PrincipalCollection.php

Indentation +69 added lines, -69 removed lines

@@ -20,77 +20,77 @@
  */
 class PrincipalCollection extends AbstractPrincipalCollection implements IExtendedCollection, IACL
 {
-    use ACLTrait;
+	use ACLTrait;
 
-    /**
-     * This method returns a node for a principal.
-     *
-     * The passed array contains principal information, and is guaranteed to
-     * at least contain a uri item. Other properties may or may not be
-     * supplied by the authentication backend.
-     *
-     * @return \Sabre\DAV\INode
-     */
-    public function getChildForPrincipal(array $principal)
-    {
-        return new Principal($this->principalBackend, $principal);
-    }
+	/**
+	 * This method returns a node for a principal.
+	 *
+	 * The passed array contains principal information, and is guaranteed to
+	 * at least contain a uri item. Other properties may or may not be
+	 * supplied by the authentication backend.
+	 *
+	 * @return \Sabre\DAV\INode
+	 */
+	public function getChildForPrincipal(array $principal)
+	{
+		return new Principal($this->principalBackend, $principal);
+	}
 
-    /**
-     * Creates a new collection.
-     *
-     * This method will receive a MkCol object with all the information about
-     * the new collection that's being created.
-     *
-     * The MkCol object contains information about the resourceType of the new
-     * collection. If you don't support the specified resourceType, you should
-     * throw Exception\InvalidResourceType.
-     *
-     * The object also contains a list of WebDAV properties for the new
-     * collection.
-     *
-     * You should call the handle() method on this object to specify exactly
-     * which properties you are storing. This allows the system to figure out
-     * exactly which properties you didn't store, which in turn allows other
-     * plugins (such as the propertystorage plugin) to handle storing the
-     * property for you.
-     *
-     * @param string $name
-     *
-     * @throws InvalidResourceType
-     */
-    public function createExtendedCollection($name, MkCol $mkCol)
-    {
-        if (!$mkCol->hasResourceType('{DAV:}principal')) {
-            throw new InvalidResourceType('Only resources of type {DAV:}principal may be created here');
-        }
+	/**
+	 * Creates a new collection.
+	 *
+	 * This method will receive a MkCol object with all the information about
+	 * the new collection that's being created.
+	 *
+	 * The MkCol object contains information about the resourceType of the new
+	 * collection. If you don't support the specified resourceType, you should
+	 * throw Exception\InvalidResourceType.
+	 *
+	 * The object also contains a list of WebDAV properties for the new
+	 * collection.
+	 *
+	 * You should call the handle() method on this object to specify exactly
+	 * which properties you are storing. This allows the system to figure out
+	 * exactly which properties you didn't store, which in turn allows other
+	 * plugins (such as the propertystorage plugin) to handle storing the
+	 * property for you.
+	 *
+	 * @param string $name
+	 *
+	 * @throws InvalidResourceType
+	 */
+	public function createExtendedCollection($name, MkCol $mkCol)
+	{
+		if (!$mkCol->hasResourceType('{DAV:}principal')) {
+			throw new InvalidResourceType('Only resources of type {DAV:}principal may be created here');
+		}
 
-        $this->principalBackend->createPrincipal(
-            $this->principalPrefix.'/'.$name,
-            $mkCol
-        );
-    }
+		$this->principalBackend->createPrincipal(
+			$this->principalPrefix.'/'.$name,
+			$mkCol
+		);
+	}
 
-    /**
-     * Returns a list of ACE's for this node.
-     *
-     * Each ACE has the following properties:
-     *   * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
-     *     currently the only supported privileges
-     *   * 'principal', a url to the principal who owns the node
-     *   * 'protected' (optional), indicating that this ACE is not allowed to
-     *      be updated.
-     *
-     * @return array
-     */
-    public function getACL()
-    {
-        return [
-            [
-                'principal' => '{DAV:}authenticated',
-                'privilege' => '{DAV:}read',
-                'protected' => true,
-            ],
-        ];
-    }
+	/**
+	 * Returns a list of ACE's for this node.
+	 *
+	 * Each ACE has the following properties:
+	 *   * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
+	 *     currently the only supported privileges
+	 *   * 'principal', a url to the principal who owns the node
+	 *   * 'protected' (optional), indicating that this ACE is not allowed to
+	 *      be updated.
+	 *
+	 * @return array
+	 */
+	public function getACL()
+	{
+		return [
+			[
+				'principal' => '{DAV:}authenticated',
+				'privilege' => '{DAV:}read',
+				'protected' => true,
+			],
+		];
+	}
 }

htdocs/includes/sabre/sabre/dav/lib/DAV/ICopyTarget.php

Indentation +18 added lines, -18 removed lines

@@ -17,22 +17,22 @@
  */
 interface ICopyTarget extends ICollection
 {
-    /**
-     * Copies a node into this collection.
-     *
-     * It is up to the implementors to:
-     *   1. Create the new resource.
-     *   2. Copy the data and any properties.
-     *
-     * If you return true from this function, the assumption
-     * is that the copy was successful.
-     * If you return false, sabre/dav will handle the copy itself.
-     *
-     * @param string $targetName new local file/collection name
-     * @param string $sourcePath Full path to source node
-     * @param INode  $sourceNode Source node itself
-     *
-     * @return bool
-     */
-    public function copyInto($targetName, $sourcePath, INode $sourceNode);
+	/**
+	 * Copies a node into this collection.
+	 *
+	 * It is up to the implementors to:
+	 *   1. Create the new resource.
+	 *   2. Copy the data and any properties.
+	 *
+	 * If you return true from this function, the assumption
+	 * is that the copy was successful.
+	 * If you return false, sabre/dav will handle the copy itself.
+	 *
+	 * @param string $targetName new local file/collection name
+	 * @param string $sourcePath Full path to source node
+	 * @param INode  $sourceNode Source node itself
+	 *
+	 * @return bool
+	 */
+	public function copyInto($targetName, $sourcePath, INode $sourceNode);
 }

htdocs/includes/sabre/sabre/dav/lib/DAV/IMoveTarget.php

Indentation +22 added lines, -22 removed lines

@@ -21,26 +21,26 @@
  */
 interface IMoveTarget extends ICollection
 {
-    /**
-     * Moves a node into this collection.
-     *
-     * It is up to the implementors to:
-     *   1. Create the new resource.
-     *   2. Remove the old resource.
-     *   3. Transfer any properties or other data.
-     *
-     * Generally you should make very sure that your collection can easily move
-     * the move.
-     *
-     * If you don't, just return false, which will trigger sabre/dav to handle
-     * the move itself. If you return true from this function, the assumption
-     * is that the move was successful.
-     *
-     * @param string $targetName new local file/collection name
-     * @param string $sourcePath Full path to source node
-     * @param INode  $sourceNode Source node itself
-     *
-     * @return bool
-     */
-    public function moveInto($targetName, $sourcePath, INode $sourceNode);
+	/**
+	 * Moves a node into this collection.
+	 *
+	 * It is up to the implementors to:
+	 *   1. Create the new resource.
+	 *   2. Remove the old resource.
+	 *   3. Transfer any properties or other data.
+	 *
+	 * Generally you should make very sure that your collection can easily move
+	 * the move.
+	 *
+	 * If you don't, just return false, which will trigger sabre/dav to handle
+	 * the move itself. If you return true from this function, the assumption
+	 * is that the move was successful.
+	 *
+	 * @param string $targetName new local file/collection name
+	 * @param string $sourcePath Full path to source node
+	 * @param INode  $sourceNode Source node itself
+	 *
+	 * @return bool
+	 */
+	public function moveInto($targetName, $sourcePath, INode $sourceNode);
 }

htdocs/includes/sabre/sabre/dav/lib/DAV/SimpleCollection.php

Indentation +82 added lines, -82 removed lines

@@ -18,92 +18,92 @@
  */
 class SimpleCollection extends Collection
 {
-    /**
-     * List of childnodes.
-     *
-     * @var INode[]
-     */
-    protected $children = [];
+	/**
+	 * List of childnodes.
+	 *
+	 * @var INode[]
+	 */
+	protected $children = [];
 
-    /**
-     * Name of this resource.
-     *
-     * @var string
-     */
-    protected $name;
+	/**
+	 * Name of this resource.
+	 *
+	 * @var string
+	 */
+	protected $name;
 
-    /**
-     * Creates this node.
-     *
-     * The name of the node must be passed, child nodes can also be passed.
-     * This nodes must be instances of INode
-     *
-     * @param string  $name
-     * @param INode[] $children
-     */
-    public function __construct($name, array $children = [])
-    {
-        $this->name = $name;
-        foreach ($children as $key => $child) {
-            if (is_string($child)) {
-                $child = new SimpleFile($key, $child);
-            } elseif (is_array($child)) {
-                $child = new self($key, $child);
-            } elseif (!$child instanceof INode) {
-                throw new InvalidArgumentException('Children must be specified as strings, arrays or instances of Sabre\DAV\INode');
-            }
-            $this->addChild($child);
-        }
-    }
+	/**
+	 * Creates this node.
+	 *
+	 * The name of the node must be passed, child nodes can also be passed.
+	 * This nodes must be instances of INode
+	 *
+	 * @param string  $name
+	 * @param INode[] $children
+	 */
+	public function __construct($name, array $children = [])
+	{
+		$this->name = $name;
+		foreach ($children as $key => $child) {
+			if (is_string($child)) {
+				$child = new SimpleFile($key, $child);
+			} elseif (is_array($child)) {
+				$child = new self($key, $child);
+			} elseif (!$child instanceof INode) {
+				throw new InvalidArgumentException('Children must be specified as strings, arrays or instances of Sabre\DAV\INode');
+			}
+			$this->addChild($child);
+		}
+	}
 
-    /**
-     * Adds a new childnode to this collection.
-     */
-    public function addChild(INode $child)
-    {
-        $this->children[$child->getName()] = $child;
-    }
+	/**
+	 * Adds a new childnode to this collection.
+	 */
+	public function addChild(INode $child)
+	{
+		$this->children[$child->getName()] = $child;
+	}
 
-    /**
-     * Returns the name of the collection.
-     *
-     * @return string
-     */
-    public function getName()
-    {
-        return $this->name;
-    }
+	/**
+	 * Returns the name of the collection.
+	 *
+	 * @return string
+	 */
+	public function getName()
+	{
+		return $this->name;
+	}
 
-    /**
-     * Returns a child object, by its name.
-     *
-     * This method makes use of the getChildren method to grab all the child nodes, and compares the name.
-     * Generally its wise to override this, as this can usually be optimized
-     *
-     * This method must throw Sabre\DAV\Exception\NotFound if the node does not
-     * exist.
-     *
-     * @param string $name
-     *
-     * @throws Exception\NotFound
-     *
-     * @return INode
-     */
-    public function getChild($name)
-    {
-        if (isset($this->children[$name])) {
-            return $this->children[$name];
-        }
-        throw new Exception\NotFound('File not found: '.$name.' in \''.$this->getName().'\'');
-    }
+	/**
+	 * Returns a child object, by its name.
+	 *
+	 * This method makes use of the getChildren method to grab all the child nodes, and compares the name.
+	 * Generally its wise to override this, as this can usually be optimized
+	 *
+	 * This method must throw Sabre\DAV\Exception\NotFound if the node does not
+	 * exist.
+	 *
+	 * @param string $name
+	 *
+	 * @throws Exception\NotFound
+	 *
+	 * @return INode
+	 */
+	public function getChild($name)
+	{
+		if (isset($this->children[$name])) {
+			return $this->children[$name];
+		}
+		throw new Exception\NotFound('File not found: '.$name.' in \''.$this->getName().'\'');
+	}
 
-    /**
-     * Returns a list of children for this collection.
-     *
-     * @return INode[]
-     */
-    public function getChildren()
-    {
-        return array_values($this->children);
-    }
+	/**
+	 * Returns a list of children for this collection.
+	 *
+	 * @return INode[]
+	 */
+	public function getChildren()
+	{
+		return array_values($this->children);
+	}
 }

htdocs/includes/sabre/sabre/dav/lib/DAV/Server.php

Indentation +1644 added lines, -1644 removed lines

@@ -25,1656 +25,1656 @@
  */
 class Server implements LoggerAwareInterface, EmitterInterface
 {
-    use LoggerAwareTrait;
-    use WildcardEmitterTrait;
-
-    /**
-     * Infinity is used for some request supporting the HTTP Depth header and indicates that the operation should traverse the entire tree.
-     */
-    const DEPTH_INFINITY = -1;
-
-    /**
-     * XML namespace for all SabreDAV related elements.
-     */
-    const NS_SABREDAV = 'http://sabredav.org/ns';
-
-    /**
-     * The tree object.
-     *
-     * @var Tree
-     */
-    public $tree;
-
-    /**
-     * The base uri.
-     *
-     * @var string
-     */
-    protected $baseUri = null;
-
-    /**
-     * httpResponse.
-     *
-     * @var HTTP\Response
-     */
-    public $httpResponse;
-
-    /**
-     * httpRequest.
-     *
-     * @var HTTP\Request
-     */
-    public $httpRequest;
-
-    /**
-     * PHP HTTP Sapi.
-     *
-     * @var HTTP\Sapi
-     */
-    public $sapi;
-
-    /**
-     * The list of plugins.
-     *
-     * @var array
-     */
-    protected $plugins = [];
-
-    /**
-     * This property will be filled with a unique string that describes the
-     * transaction. This is useful for performance measuring and logging
-     * purposes.
-     *
-     * By default it will just fill it with a lowercased HTTP method name, but
-     * plugins override this. For example, the WebDAV-Sync sync-collection
-     * report will set this to 'report-sync-collection'.
-     *
-     * @var string
-     */
-    public $transactionType;
-
-    /**
-     * This is a list of properties that are always server-controlled, and
-     * must not get modified with PROPPATCH.
-     *
-     * Plugins may add to this list.
-     *
-     * @var string[]
-     */
-    public $protectedProperties = [
-        // RFC4918
-        '{DAV:}getcontentlength',
-        '{DAV:}getetag',
-        '{DAV:}getlastmodified',
-        '{DAV:}lockdiscovery',
-        '{DAV:}supportedlock',
-
-        // RFC4331
-        '{DAV:}quota-available-bytes',
-        '{DAV:}quota-used-bytes',
-
-        // RFC3744
-        '{DAV:}supported-privilege-set',
-        '{DAV:}current-user-privilege-set',
-        '{DAV:}acl',
-        '{DAV:}acl-restrictions',
-        '{DAV:}inherited-acl-set',
-
-        // RFC3253
-        '{DAV:}supported-method-set',
-        '{DAV:}supported-report-set',
-
-        // RFC6578
-        '{DAV:}sync-token',
-
-        // calendarserver.org extensions
-        '{http://calendarserver.org/ns/}ctag',
-
-        // sabredav extensions
-        '{http://sabredav.org/ns}sync-token',
-    ];
-
-    /**
-     * This is a flag that allow or not showing file, line and code
-     * of the exception in the returned XML.
-     *
-     * @var bool
-     */
-    public $debugExceptions = false;
-
-    /**
-     * This property allows you to automatically add the 'resourcetype' value
-     * based on a node's classname or interface.
-     *
-     * The preset ensures that {DAV:}collection is automatically added for nodes
-     * implementing Sabre\DAV\ICollection.
-     *
-     * @var array
-     */
-    public $resourceTypeMapping = [
-        'Sabre\\DAV\\ICollection' => '{DAV:}collection',
-    ];
-
-    /**
-     * This property allows the usage of Depth: infinity on PROPFIND requests.
-     *
-     * By default Depth: infinity is treated as Depth: 1. Allowing Depth:
-     * infinity is potentially risky, as it allows a single client to do a full
-     * index of the webdav server, which is an easy DoS attack vector.
-     *
-     * Only turn this on if you know what you're doing.
-     *
-     * @var bool
-     */
-    public $enablePropfindDepthInfinity = false;
-
-    /**
-     * Reference to the XML utility object.
-     *
-     * @var Xml\Service
-     */
-    public $xml;
-
-    /**
-     * If this setting is turned off, SabreDAV's version number will be hidden
-     * from various places.
-     *
-     * Some people feel this is a good security measure.
-     *
-     * @var bool
-     */
-    public static $exposeVersion = true;
-
-    /**
-     * If this setting is turned on, any multi status response on any PROPFIND will be streamed to the output buffer.
-     * This will be beneficial for large result sets which will no longer consume a large amount of memory as well as
-     * send back data to the client earlier.
-     *
-     * @var bool
-     */
-    public static $streamMultiStatus = false;
-
-    /**
-     * Sets up the server.
-     *
-     * If a Sabre\DAV\Tree object is passed as an argument, it will
-     * use it as the directory tree. If a Sabre\DAV\INode is passed, it
-     * will create a Sabre\DAV\Tree and use the node as the root.
-     *
-     * If nothing is passed, a Sabre\DAV\SimpleCollection is created in
-     * a Sabre\DAV\Tree.
-     *
-     * If an array is passed, we automatically create a root node, and use
-     * the nodes in the array as top-level children.
-     *
-     * @param Tree|INode|array|null $treeOrNode The tree object
-     *
-     * @throws Exception
-     */
-    public function __construct($treeOrNode = null, HTTP\Sapi $sapi = null)
-    {
-        if ($treeOrNode instanceof Tree) {
-            $this->tree = $treeOrNode;
-        } elseif ($treeOrNode instanceof INode) {
-            $this->tree = new Tree($treeOrNode);
-        } elseif (is_array($treeOrNode)) {
-            $root = new SimpleCollection('root', $treeOrNode);
-            $this->tree = new Tree($root);
-        } elseif (is_null($treeOrNode)) {
-            $root = new SimpleCollection('root');
-            $this->tree = new Tree($root);
-        } else {
-            throw new Exception('Invalid argument passed to constructor. Argument must either be an instance of Sabre\\DAV\\Tree, Sabre\\DAV\\INode, an array or null');
-        }
-
-        $this->xml = new Xml\Service();
-        $this->sapi = $sapi ?? new HTTP\Sapi();
-        $this->httpResponse = new HTTP\Response();
-        $this->httpRequest = $this->sapi->getRequest();
-        $this->addPlugin(new CorePlugin());
-    }
-
-    /**
-     * Starts the DAV Server.
-     */
-    public function start()
-    {
-        try {
-            // If nginx (pre-1.2) is used as a proxy server, and SabreDAV as an
-            // origin, we must make sure we send back HTTP/1.0 if this was
-            // requested.
-            // This is mainly because nginx doesn't support Chunked Transfer
-            // Encoding, and this forces the webserver SabreDAV is running on,
-            // to buffer entire responses to calculate Content-Length.
-            $this->httpResponse->setHTTPVersion($this->httpRequest->getHTTPVersion());
-
-            // Setting the base url
-            $this->httpRequest->setBaseUrl($this->getBaseUri());
-            $this->invokeMethod($this->httpRequest, $this->httpResponse);
-        } catch (\Throwable $e) {
-            try {
-                $this->emit('exception', [$e]);
-            } catch (\Exception $ignore) {
-            }
-            $DOM = new \DOMDocument('1.0', 'utf-8');
-            $DOM->formatOutput = true;
-
-            $error = $DOM->createElementNS('DAV:', 'd:error');
-            $error->setAttribute('xmlns:s', self::NS_SABREDAV);
-            $DOM->appendChild($error);
-
-            $h = function ($v) {
-                return htmlspecialchars((string) $v, ENT_NOQUOTES, 'UTF-8');
-            };
-
-            if (self::$exposeVersion) {
-                $error->appendChild($DOM->createElement('s:sabredav-version', $h(Version::VERSION)));
-            }
-
-            $error->appendChild($DOM->createElement('s:exception', $h(get_class($e))));
-            $error->appendChild($DOM->createElement('s:message', $h($e->getMessage())));
-            if ($this->debugExceptions) {
-                $error->appendChild($DOM->createElement('s:file', $h($e->getFile())));
-                $error->appendChild($DOM->createElement('s:line', $h($e->getLine())));
-                $error->appendChild($DOM->createElement('s:code', $h($e->getCode())));
-                $error->appendChild($DOM->createElement('s:stacktrace', $h($e->getTraceAsString())));
-            }
-
-            if ($this->debugExceptions) {
-                $previous = $e;
-                while ($previous = $previous->getPrevious()) {
-                    $xPrevious = $DOM->createElement('s:previous-exception');
-                    $xPrevious->appendChild($DOM->createElement('s:exception', $h(get_class($previous))));
-                    $xPrevious->appendChild($DOM->createElement('s:message', $h($previous->getMessage())));
-                    $xPrevious->appendChild($DOM->createElement('s:file', $h($previous->getFile())));
-                    $xPrevious->appendChild($DOM->createElement('s:line', $h($previous->getLine())));
-                    $xPrevious->appendChild($DOM->createElement('s:code', $h($previous->getCode())));
-                    $xPrevious->appendChild($DOM->createElement('s:stacktrace', $h($previous->getTraceAsString())));
-                    $error->appendChild($xPrevious);
-                }
-            }
-
-            if ($e instanceof Exception) {
-                $httpCode = $e->getHTTPCode();
-                $e->serialize($this, $error);
-                $headers = $e->getHTTPHeaders($this);
-            } else {
-                $httpCode = 500;
-                $headers = [];
-            }
-            $headers['Content-Type'] = 'application/xml; charset=utf-8';
-
-            $this->httpResponse->setStatus($httpCode);
-            $this->httpResponse->setHeaders($headers);
-            $this->httpResponse->setBody($DOM->saveXML());
-            $this->sapi->sendResponse($this->httpResponse);
-        }
-    }
-
-    /**
-     * Alias of start().
-     *
-     * @deprecated
-     */
-    public function exec()
-    {
-        $this->start();
-    }
-
-    /**
-     * Sets the base server uri.
-     *
-     * @param string $uri
-     */
-    public function setBaseUri($uri)
-    {
-        // If the baseUri does not end with a slash, we must add it
-        if ('/' !== $uri[strlen($uri) - 1]) {
-            $uri .= '/';
-        }
-
-        $this->baseUri = $uri;
-    }
-
-    /**
-     * Returns the base responding uri.
-     *
-     * @return string
-     */
-    public function getBaseUri()
-    {
-        if (is_null($this->baseUri)) {
-            $this->baseUri = $this->guessBaseUri();
-        }
-
-        return $this->baseUri;
-    }
-
-    /**
-     * This method attempts to detect the base uri.
-     * Only the PATH_INFO variable is considered.
-     *
-     * If this variable is not set, the root (/) is assumed.
-     *
-     * @return string
-     */
-    public function guessBaseUri()
-    {
-        $pathInfo = $this->httpRequest->getRawServerValue('PATH_INFO');
-        $uri = $this->httpRequest->getRawServerValue('REQUEST_URI');
-
-        // If PATH_INFO is found, we can assume it's accurate.
-        if (!empty($pathInfo)) {
-            // We need to make sure we ignore the QUERY_STRING part
-            if ($pos = strpos($uri, '?')) {
-                $uri = substr($uri, 0, $pos);
-            }
-
-            // PATH_INFO is only set for urls, such as: /example.php/path
-            // in that case PATH_INFO contains '/path'.
-            // Note that REQUEST_URI is percent encoded, while PATH_INFO is
-            // not, Therefore they are only comparable if we first decode
-            // REQUEST_INFO as well.
-            $decodedUri = HTTP\decodePath($uri);
-
-            // A simple sanity check:
-            if (substr($decodedUri, strlen($decodedUri) - strlen($pathInfo)) === $pathInfo) {
-                $baseUri = substr($decodedUri, 0, strlen($decodedUri) - strlen($pathInfo));
-
-                return rtrim($baseUri, '/').'/';
-            }
-
-            throw new Exception('The REQUEST_URI ('.$uri.') did not end with the contents of PATH_INFO ('.$pathInfo.'). This server might be misconfigured.');
-        }
-
-        // The last fallback is that we're just going to assume the server root.
-        return '/';
-    }
-
-    /**
-     * Adds a plugin to the server.
-     *
-     * For more information, console the documentation of Sabre\DAV\ServerPlugin
-     */
-    public function addPlugin(ServerPlugin $plugin)
-    {
-        $this->plugins[$plugin->getPluginName()] = $plugin;
-        $plugin->initialize($this);
-    }
-
-    /**
-     * Returns an initialized plugin by it's name.
-     *
-     * This function returns null if the plugin was not found.
-     *
-     * @param string $name
-     *
-     * @return ServerPlugin
-     */
-    public function getPlugin($name)
-    {
-        if (isset($this->plugins[$name])) {
-            return $this->plugins[$name];
-        }
-
-        return null;
-    }
-
-    /**
-     * Returns all plugins.
-     *
-     * @return array
-     */
-    public function getPlugins()
-    {
-        return $this->plugins;
-    }
-
-    /**
-     * Returns the PSR-3 logger object.
-     *
-     * @return LoggerInterface
-     */
-    public function getLogger()
-    {
-        if (!$this->logger) {
-            $this->logger = new NullLogger();
-        }
-
-        return $this->logger;
-    }
-
-    /**
-     * Handles a http request, and execute a method based on its name.
-     *
-     * @param bool $sendResponse whether to send the HTTP response to the DAV client
-     */
-    public function invokeMethod(RequestInterface $request, ResponseInterface $response, $sendResponse = true)
-    {
-        $method = $request->getMethod();
-
-        if (!$this->emit('beforeMethod:'.$method, [$request, $response])) {
-            return;
-        }
-
-        if (self::$exposeVersion) {
-            $response->setHeader('X-Sabre-Version', Version::VERSION);
-        }
-
-        $this->transactionType = strtolower($method);
-
-        if (!$this->checkPreconditions($request, $response)) {
-            $this->sapi->sendResponse($response);
-
-            return;
-        }
-
-        if ($this->emit('method:'.$method, [$request, $response])) {
-            $exMessage = 'There was no plugin in the system that was willing to handle this '.$method.' method.';
-            if ('GET' === $method) {
-                $exMessage .= ' Enable the Browser plugin to get a better result here.';
-            }
-
-            // Unsupported method
-            throw new Exception\NotImplemented($exMessage);
-        }
-
-        if (!$this->emit('afterMethod:'.$method, [$request, $response])) {
-            return;
-        }
-
-        if (null === $response->getStatus()) {
-            throw new Exception('No subsystem set a valid HTTP status code. Something must have interrupted the request without providing further detail.');
-        }
-        if ($sendResponse) {
-            $this->sapi->sendResponse($response);
-            $this->emit('afterResponse', [$request, $response]);
-        }
-    }
-
-    // {{{ HTTP/WebDAV protocol helpers
-
-    /**
-     * Returns an array with all the supported HTTP methods for a specific uri.
-     *
-     * @param string $path
-     *
-     * @return array
-     */
-    public function getAllowedMethods($path)
-    {
-        $methods = [
-            'OPTIONS',
-            'GET',
-            'HEAD',
-            'DELETE',
-            'PROPFIND',
-            'PUT',
-            'PROPPATCH',
-            'COPY',
-            'MOVE',
-            'REPORT',
-        ];
-
-        // The MKCOL is only allowed on an unmapped uri
-        try {
-            $this->tree->getNodeForPath($path);
-        } catch (Exception\NotFound $e) {
-            $methods[] = 'MKCOL';
-        }
-
-        // We're also checking if any of the plugins register any new methods
-        foreach ($this->plugins as $plugin) {
-            $methods = array_merge($methods, $plugin->getHTTPMethods($path));
-        }
-        array_unique($methods);
-
-        return $methods;
-    }
-
-    /**
-     * Gets the uri for the request, keeping the base uri into consideration.
-     *
-     * @return string
-     */
-    public function getRequestUri()
-    {
-        return $this->calculateUri($this->httpRequest->getUrl());
-    }
-
-    /**
-     * Turns a URI such as the REQUEST_URI into a local path.
-     *
-     * This method:
-     *   * strips off the base path
-     *   * normalizes the path
-     *   * uri-decodes the path
-     *
-     * @param string $uri
-     *
-     * @throws Exception\Forbidden A permission denied exception is thrown whenever there was an attempt to supply a uri outside of the base uri
-     *
-     * @return string
-     */
-    public function calculateUri($uri)
-    {
-        if ('' != $uri && '/' != $uri[0] && strpos($uri, '://')) {
-            $uri = parse_url($uri, PHP_URL_PATH);
-        }
-
-        $uri = Uri\normalize(preg_replace('|/+|', '/', $uri));
-        $baseUri = Uri\normalize($this->getBaseUri());
-
-        if (0 === strpos($uri, $baseUri)) {
-            return trim(HTTP\decodePath(substr($uri, strlen($baseUri))), '/');
-
-        // A special case, if the baseUri was accessed without a trailing
-        // slash, we'll accept it as well.
-        } elseif ($uri.'/' === $baseUri) {
-            return '';
-        } else {
-            throw new Exception\Forbidden('Requested uri ('.$uri.') is out of base uri ('.$this->getBaseUri().')');
-        }
-    }
-
-    /**
-     * Returns the HTTP depth header.
-     *
-     * This method returns the contents of the HTTP depth request header. If the depth header was 'infinity' it will return the Sabre\DAV\Server::DEPTH_INFINITY object
-     * It is possible to supply a default depth value, which is used when the depth header has invalid content, or is completely non-existent
-     *
-     * @param mixed $default
-     *
-     * @return int
-     */
-    public function getHTTPDepth($default = self::DEPTH_INFINITY)
-    {
-        // If its not set, we'll grab the default
-        $depth = $this->httpRequest->getHeader('Depth');
-
-        if (is_null($depth)) {
-            return $default;
-        }
-
-        if ('infinity' == $depth) {
-            return self::DEPTH_INFINITY;
-        }
-
-        // If its an unknown value. we'll grab the default
-        if (!ctype_digit($depth)) {
-            return $default;
-        }
-
-        return (int) $depth;
-    }
-
-    /**
-     * Returns the HTTP range header.
-     *
-     * This method returns null if there is no well-formed HTTP range request
-     * header or array($start, $end).
-     *
-     * The first number is the offset of the first byte in the range.
-     * The second number is the offset of the last byte in the range.
-     *
-     * If the second offset is null, it should be treated as the offset of the last byte of the entity
-     * If the first offset is null, the second offset should be used to retrieve the last x bytes of the entity
-     *
-     * @return int[]|null
-     */
-    public function getHTTPRange()
-    {
-        $range = $this->httpRequest->getHeader('range');
-        if (is_null($range)) {
-            return null;
-        }
-
-        // Matching "Range: bytes=1234-5678: both numbers are optional
-
-        if (!preg_match('/^bytes=([0-9]*)-([0-9]*)$/i', $range, $matches)) {
-            return null;
-        }
-
-        if ('' === $matches[1] && '' === $matches[2]) {
-            return null;
-        }
-
-        return [
-            '' !== $matches[1] ? (int) $matches[1] : null,
-            '' !== $matches[2] ? (int) $matches[2] : null,
-        ];
-    }
-
-    /**
-     * Returns the HTTP Prefer header information.
-     *
-     * The prefer header is defined in:
-     * http://tools.ietf.org/html/draft-snell-http-prefer-14
-     *
-     * This method will return an array with options.
-     *
-     * Currently, the following options may be returned:
-     *  [
-     *      'return-asynch'         => true,
-     *      'return-minimal'        => true,
-     *      'return-representation' => true,
-     *      'wait'                  => 30,
-     *      'strict'                => true,
-     *      'lenient'               => true,
-     *  ]
-     *
-     * This method also supports the Brief header, and will also return
-     * 'return-minimal' if the brief header was set to 't'.
-     *
-     * For the boolean options, false will be returned if the headers are not
-     * specified. For the integer options it will be 'null'.
-     *
-     * @return array
-     */
-    public function getHTTPPrefer()
-    {
-        $result = [
-            // can be true or false
-            'respond-async' => false,
-            // Could be set to 'representation' or 'minimal'.
-            'return' => null,
-            // Used as a timeout, is usually a number.
-            'wait' => null,
-            // can be 'strict' or 'lenient'.
-            'handling' => false,
-        ];
-
-        if ($prefer = $this->httpRequest->getHeader('Prefer')) {
-            $result = array_merge(
-                $result,
-                HTTP\parsePrefer($prefer)
-            );
-        } elseif ('t' == $this->httpRequest->getHeader('Brief')) {
-            $result['return'] = 'minimal';
-        }
-
-        return $result;
-    }
-
-    /**
-     * Returns information about Copy and Move requests.
-     *
-     * This function is created to help getting information about the source and the destination for the
-     * WebDAV MOVE and COPY HTTP request. It also validates a lot of information and throws proper exceptions
-     *
-     * The returned value is an array with the following keys:
-     *   * destination - Destination path
-     *   * destinationExists - Whether or not the destination is an existing url (and should therefore be overwritten)
-     *
-     * @throws Exception\BadRequest           upon missing or broken request headers
-     * @throws Exception\UnsupportedMediaType when trying to copy into a
-     *                                        non-collection
-     * @throws Exception\PreconditionFailed   if overwrite is set to false, but
-     *                                        the destination exists
-     * @throws Exception\Forbidden            when source and destination paths are
-     *                                        identical
-     * @throws Exception\Conflict             when trying to copy a node into its own
-     *                                        subtree
-     *
-     * @return array
-     */
-    public function getCopyAndMoveInfo(RequestInterface $request)
-    {
-        // Collecting the relevant HTTP headers
-        if (!$request->getHeader('Destination')) {
-            throw new Exception\BadRequest('The destination header was not supplied');
-        }
-        $destination = $this->calculateUri($request->getHeader('Destination'));
-        $overwrite = $request->getHeader('Overwrite');
-        if (!$overwrite) {
-            $overwrite = 'T';
-        }
-        if ('T' == strtoupper($overwrite)) {
-            $overwrite = true;
-        } elseif ('F' == strtoupper($overwrite)) {
-            $overwrite = false;
-        }
-        // We need to throw a bad request exception, if the header was invalid
-        else {
-            throw new Exception\BadRequest('The HTTP Overwrite header should be either T or F');
-        }
-        list($destinationDir) = Uri\split($destination);
-
-        try {
-            $destinationParent = $this->tree->getNodeForPath($destinationDir);
-            if (!($destinationParent instanceof ICollection)) {
-                throw new Exception\UnsupportedMediaType('The destination node is not a collection');
-            }
-        } catch (Exception\NotFound $e) {
-            // If the destination parent node is not found, we throw a 409
-            throw new Exception\Conflict('The destination node is not found');
-        }
-
-        try {
-            $destinationNode = $this->tree->getNodeForPath($destination);
-
-            // If this succeeded, it means the destination already exists
-            // we'll need to throw precondition failed in case overwrite is false
-            if (!$overwrite) {
-                throw new Exception\PreconditionFailed('The destination node already exists, and the overwrite header is set to false', 'Overwrite');
-            }
-        } catch (Exception\NotFound $e) {
-            // Destination didn't exist, we're all good
-            $destinationNode = false;
-        }
-
-        $requestPath = $request->getPath();
-        if ($destination === $requestPath) {
-            throw new Exception\Forbidden('Source and destination uri are identical.');
-        }
-        if (substr($destination, 0, strlen($requestPath) + 1) === $requestPath.'/') {
-            throw new Exception\Conflict('The destination may not be part of the same subtree as the source path.');
-        }
-
-        // These are the three relevant properties we need to return
-        return [
-            'destination' => $destination,
-            'destinationExists' => (bool) $destinationNode,
-            'destinationNode' => $destinationNode,
-        ];
-    }
-
-    /**
-     * Returns a list of properties for a path.
-     *
-     * This is a simplified version getPropertiesForPath. If you aren't
-     * interested in status codes, but you just want to have a flat list of
-     * properties, use this method.
-     *
-     * Please note though that any problems related to retrieving properties,
-     * such as permission issues will just result in an empty array being
-     * returned.
-     *
-     * @param string $path
-     * @param array  $propertyNames
-     *
-     * @return array
-     */
-    public function getProperties($path, $propertyNames)
-    {
-        $result = $this->getPropertiesForPath($path, $propertyNames, 0);
-        if (isset($result[0][200])) {
-            return $result[0][200];
-        } else {
-            return [];
-        }
-    }
-
-    /**
-     * A kid-friendly way to fetch properties for a node's children.
-     *
-     * The returned array will be indexed by the path of the of child node.
-     * Only properties that are actually found will be returned.
-     *
-     * The parent node will not be returned.
-     *
-     * @param string $path
-     * @param array  $propertyNames
-     *
-     * @return array
-     */
-    public function getPropertiesForChildren($path, $propertyNames)
-    {
-        $result = [];
-        foreach ($this->getPropertiesForPath($path, $propertyNames, 1) as $k => $row) {
-            // Skipping the parent path
-            if (0 === $k) {
-                continue;
-            }
-
-            $result[$row['href']] = $row[200];
-        }
-
-        return $result;
-    }
-
-    /**
-     * Returns a list of HTTP headers for a particular resource.
-     *
-     * The generated http headers are based on properties provided by the
-     * resource. The method basically provides a simple mapping between
-     * DAV property and HTTP header.
-     *
-     * The headers are intended to be used for HEAD and GET requests.
-     *
-     * @param string $path
-     *
-     * @return array
-     */
-    public function getHTTPHeaders($path)
-    {
-        $propertyMap = [
-            '{DAV:}getcontenttype' => 'Content-Type',
-            '{DAV:}getcontentlength' => 'Content-Length',
-            '{DAV:}getlastmodified' => 'Last-Modified',
-            '{DAV:}getetag' => 'ETag',
-        ];
-
-        $properties = $this->getProperties($path, array_keys($propertyMap));
-
-        $headers = [];
-        foreach ($propertyMap as $property => $header) {
-            if (!isset($properties[$property])) {
-                continue;
-            }
-
-            if (is_scalar($properties[$property])) {
-                $headers[$header] = $properties[$property];
-
-            // GetLastModified gets special cased
-            } elseif ($properties[$property] instanceof Xml\Property\GetLastModified) {
-                $headers[$header] = HTTP\toDate($properties[$property]->getTime());
-            }
-        }
-
-        return $headers;
-    }
-
-    /**
-     * Small helper to support PROPFIND with DEPTH_INFINITY.
-     *
-     * @param array $yieldFirst
-     *
-     * @return \Traversable
-     */
-    private function generatePathNodes(PropFind $propFind, array $yieldFirst = null)
-    {
-        if (null !== $yieldFirst) {
-            yield $yieldFirst;
-        }
-        $newDepth = $propFind->getDepth();
-        $path = $propFind->getPath();
-
-        if (self::DEPTH_INFINITY !== $newDepth) {
-            --$newDepth;
-        }
-
-        $propertyNames = $propFind->getRequestedProperties();
-        $propFindType = !$propFind->isAllProps() ? PropFind::NORMAL : PropFind::ALLPROPS;
-
-        foreach ($this->tree->getChildren($path) as $childNode) {
-            if ('' !== $path) {
-                $subPath = $path.'/'.$childNode->getName();
-            } else {
-                $subPath = $childNode->getName();
-            }
-            $subPropFind = new PropFind($subPath, $propertyNames, $newDepth, $propFindType);
-
-            yield [
-                $subPropFind,
-                $childNode,
-            ];
-
-            if ((self::DEPTH_INFINITY === $newDepth || $newDepth >= 1) && $childNode instanceof ICollection) {
-                foreach ($this->generatePathNodes($subPropFind) as $subItem) {
-                    yield $subItem;
-                }
-            }
-        }
-    }
-
-    /**
-     * Returns a list of properties for a given path.
-     *
-     * The path that should be supplied should have the baseUrl stripped out
-     * The list of properties should be supplied in Clark notation. If the list is empty
-     * 'allprops' is assumed.
-     *
-     * If a depth of 1 is requested child elements will also be returned.
-     *
-     * @param string $path
-     * @param array  $propertyNames
-     * @param int    $depth
-     *
-     * @return array
-     *
-     * @deprecated Use getPropertiesIteratorForPath() instead (as it's more memory efficient)
-     * @see getPropertiesIteratorForPath()
-     */
-    public function getPropertiesForPath($path, $propertyNames = [], $depth = 0)
-    {
-        return iterator_to_array($this->getPropertiesIteratorForPath($path, $propertyNames, $depth));
-    }
-
-    /**
-     * Returns a list of properties for a given path.
-     *
-     * The path that should be supplied should have the baseUrl stripped out
-     * The list of properties should be supplied in Clark notation. If the list is empty
-     * 'allprops' is assumed.
-     *
-     * If a depth of 1 is requested child elements will also be returned.
-     *
-     * @param string $path
-     * @param array  $propertyNames
-     * @param int    $depth
-     *
-     * @return \Iterator
-     */
-    public function getPropertiesIteratorForPath($path, $propertyNames = [], $depth = 0)
-    {
-        // The only two options for the depth of a propfind is 0 or 1 - as long as depth infinity is not enabled
-        if (!$this->enablePropfindDepthInfinity && 0 != $depth) {
-            $depth = 1;
-        }
-
-        $path = trim($path, '/');
-
-        $propFindType = $propertyNames ? PropFind::NORMAL : PropFind::ALLPROPS;
-        $propFind = new PropFind($path, (array) $propertyNames, $depth, $propFindType);
-
-        $parentNode = $this->tree->getNodeForPath($path);
-
-        $propFindRequests = [[
-            $propFind,
-            $parentNode,
-        ]];
-
-        if (($depth > 0 || self::DEPTH_INFINITY === $depth) && $parentNode instanceof ICollection) {
-            $propFindRequests = $this->generatePathNodes(clone $propFind, current($propFindRequests));
-        }
-
-        foreach ($propFindRequests as $propFindRequest) {
-            list($propFind, $node) = $propFindRequest;
-            $r = $this->getPropertiesByNode($propFind, $node);
-            if ($r) {
-                $result = $propFind->getResultForMultiStatus();
-                $result['href'] = $propFind->getPath();
-
-                // WebDAV recommends adding a slash to the path, if the path is
-                // a collection.
-                // Furthermore, iCal also demands this to be the case for
-                // principals. This is non-standard, but we support it.
-                $resourceType = $this->getResourceTypeForNode($node);
-                if (in_array('{DAV:}collection', $resourceType) || in_array('{DAV:}principal', $resourceType)) {
-                    $result['href'] .= '/';
-                }
-                yield $result;
-            }
-        }
-    }
-
-    /**
-     * Returns a list of properties for a list of paths.
-     *
-     * The path that should be supplied should have the baseUrl stripped out
-     * The list of properties should be supplied in Clark notation. If the list is empty
-     * 'allprops' is assumed.
-     *
-     * The result is returned as an array, with paths for it's keys.
-     * The result may be returned out of order.
-     *
-     * @return array
-     */
-    public function getPropertiesForMultiplePaths(array $paths, array $propertyNames = [])
-    {
-        $result = [
-        ];
-
-        $nodes = $this->tree->getMultipleNodes($paths);
-
-        foreach ($nodes as $path => $node) {
-            $propFind = new PropFind($path, $propertyNames);
-            $r = $this->getPropertiesByNode($propFind, $node);
-            if ($r) {
-                $result[$path] = $propFind->getResultForMultiStatus();
-                $result[$path]['href'] = $path;
-
-                $resourceType = $this->getResourceTypeForNode($node);
-                if (in_array('{DAV:}collection', $resourceType) || in_array('{DAV:}principal', $resourceType)) {
-                    $result[$path]['href'] .= '/';
-                }
-            }
-        }
-
-        return $result;
-    }
-
-    /**
-     * Determines all properties for a node.
-     *
-     * This method tries to grab all properties for a node. This method is used
-     * internally getPropertiesForPath and a few others.
-     *
-     * It could be useful to call this, if you already have an instance of your
-     * target node and simply want to run through the system to get a correct
-     * list of properties.
-     *
-     * @return bool
-     */
-    public function getPropertiesByNode(PropFind $propFind, INode $node)
-    {
-        return $this->emit('propFind', [$propFind, $node]);
-    }
-
-    /**
-     * This method is invoked by sub-systems creating a new file.
-     *
-     * Currently this is done by HTTP PUT and HTTP LOCK (in the Locks_Plugin).
-     * It was important to get this done through a centralized function,
-     * allowing plugins to intercept this using the beforeCreateFile event.
-     *
-     * This method will return true if the file was actually created
-     *
-     * @param string   $uri
-     * @param resource $data
-     * @param string   $etag
-     *
-     * @return bool
-     */
-    public function createFile($uri, $data, &$etag = null)
-    {
-        list($dir, $name) = Uri\split($uri);
-
-        if (!$this->emit('beforeBind', [$uri])) {
-            return false;
-        }
-
-        try {
-            $parent = $this->tree->getNodeForPath($dir);
-        } catch (Exception\NotFound $e) {
-            throw new Exception\Conflict('Files cannot be created in non-existent collections');
-        }
-
-        if (!$parent instanceof ICollection) {
-            throw new Exception\Conflict('Files can only be created as children of collections');
-        }
-
-        // It is possible for an event handler to modify the content of the
-        // body, before it gets written. If this is the case, $modified
-        // should be set to true.
-        //
-        // If $modified is true, we must not send back an ETag.
-        $modified = false;
-        if (!$this->emit('beforeCreateFile', [$uri, &$data, $parent, &$modified])) {
-            return false;
-        }
-
-        $etag = $parent->createFile($name, $data);
-
-        if ($modified) {
-            $etag = null;
-        }
-
-        $this->tree->markDirty($dir.'/'.$name);
-
-        $this->emit('afterBind', [$uri]);
-        $this->emit('afterCreateFile', [$uri, $parent]);
-
-        return true;
-    }
-
-    /**
-     * This method is invoked by sub-systems updating a file.
-     *
-     * This method will return true if the file was actually updated
-     *
-     * @param string   $uri
-     * @param resource $data
-     * @param string   $etag
-     *
-     * @return bool
-     */
-    public function updateFile($uri, $data, &$etag = null)
-    {
-        $node = $this->tree->getNodeForPath($uri);
-
-        // It is possible for an event handler to modify the content of the
-        // body, before it gets written. If this is the case, $modified
-        // should be set to true.
-        //
-        // If $modified is true, we must not send back an ETag.
-        $modified = false;
-        if (!$this->emit('beforeWriteContent', [$uri, $node, &$data, &$modified])) {
-            return false;
-        }
-
-        $etag = $node->put($data);
-        if ($modified) {
-            $etag = null;
-        }
-        $this->emit('afterWriteContent', [$uri, $node]);
-
-        return true;
-    }
-
-    /**
-     * This method is invoked by sub-systems creating a new directory.
-     *
-     * @param string $uri
-     */
-    public function createDirectory($uri)
-    {
-        $this->createCollection($uri, new MkCol(['{DAV:}collection'], []));
-    }
-
-    /**
-     * Use this method to create a new collection.
-     *
-     * @param string $uri The new uri
-     *
-     * @return array|null
-     */
-    public function createCollection($uri, MkCol $mkCol)
-    {
-        list($parentUri, $newName) = Uri\split($uri);
-
-        // Making sure the parent exists
-        try {
-            $parent = $this->tree->getNodeForPath($parentUri);
-        } catch (Exception\NotFound $e) {
-            throw new Exception\Conflict('Parent node does not exist');
-        }
-
-        // Making sure the parent is a collection
-        if (!$parent instanceof ICollection) {
-            throw new Exception\Conflict('Parent node is not a collection');
-        }
-
-        // Making sure the child does not already exist
-        try {
-            $parent->getChild($newName);
-
-            // If we got here.. it means there's already a node on that url, and we need to throw a 405
-            throw new Exception\MethodNotAllowed('The resource you tried to create already exists');
-        } catch (Exception\NotFound $e) {
-            // NotFound is the expected behavior.
-        }
-
-        if (!$this->emit('beforeBind', [$uri])) {
-            return;
-        }
-
-        if ($parent instanceof IExtendedCollection) {
-            /*
+	use LoggerAwareTrait;
+	use WildcardEmitterTrait;
+
+	/**
+	 * Infinity is used for some request supporting the HTTP Depth header and indicates that the operation should traverse the entire tree.
+	 */
+	const DEPTH_INFINITY = -1;
+
+	/**
+	 * XML namespace for all SabreDAV related elements.
+	 */
+	const NS_SABREDAV = 'http://sabredav.org/ns';
+
+	/**
+	 * The tree object.
+	 *
+	 * @var Tree
+	 */
+	public $tree;
+
+	/**
+	 * The base uri.
+	 *
+	 * @var string
+	 */
+	protected $baseUri = null;
+
+	/**
+	 * httpResponse.
+	 *
+	 * @var HTTP\Response
+	 */
+	public $httpResponse;
+
+	/**
+	 * httpRequest.
+	 *
+	 * @var HTTP\Request
+	 */
+	public $httpRequest;
+
+	/**
+	 * PHP HTTP Sapi.
+	 *
+	 * @var HTTP\Sapi
+	 */
+	public $sapi;
+
+	/**
+	 * The list of plugins.
+	 *
+	 * @var array
+	 */
+	protected $plugins = [];
+
+	/**
+	 * This property will be filled with a unique string that describes the
+	 * transaction. This is useful for performance measuring and logging
+	 * purposes.
+	 *
+	 * By default it will just fill it with a lowercased HTTP method name, but
+	 * plugins override this. For example, the WebDAV-Sync sync-collection
+	 * report will set this to 'report-sync-collection'.
+	 *
+	 * @var string
+	 */
+	public $transactionType;
+
+	/**
+	 * This is a list of properties that are always server-controlled, and
+	 * must not get modified with PROPPATCH.
+	 *
+	 * Plugins may add to this list.
+	 *
+	 * @var string[]
+	 */
+	public $protectedProperties = [
+		// RFC4918
+		'{DAV:}getcontentlength',
+		'{DAV:}getetag',
+		'{DAV:}getlastmodified',
+		'{DAV:}lockdiscovery',
+		'{DAV:}supportedlock',
+
+		// RFC4331
+		'{DAV:}quota-available-bytes',
+		'{DAV:}quota-used-bytes',
+
+		// RFC3744
+		'{DAV:}supported-privilege-set',
+		'{DAV:}current-user-privilege-set',
+		'{DAV:}acl',
+		'{DAV:}acl-restrictions',
+		'{DAV:}inherited-acl-set',
+
+		// RFC3253
+		'{DAV:}supported-method-set',
+		'{DAV:}supported-report-set',
+
+		// RFC6578
+		'{DAV:}sync-token',
+
+		// calendarserver.org extensions
+		'{http://calendarserver.org/ns/}ctag',
+
+		// sabredav extensions
+		'{http://sabredav.org/ns}sync-token',
+	];
+
+	/**
+	 * This is a flag that allow or not showing file, line and code
+	 * of the exception in the returned XML.
+	 *
+	 * @var bool
+	 */
+	public $debugExceptions = false;
+
+	/**
+	 * This property allows you to automatically add the 'resourcetype' value
+	 * based on a node's classname or interface.
+	 *
+	 * The preset ensures that {DAV:}collection is automatically added for nodes
+	 * implementing Sabre\DAV\ICollection.
+	 *
+	 * @var array
+	 */
+	public $resourceTypeMapping = [
+		'Sabre\\DAV\\ICollection' => '{DAV:}collection',
+	];
+
+	/**
+	 * This property allows the usage of Depth: infinity on PROPFIND requests.
+	 *
+	 * By default Depth: infinity is treated as Depth: 1. Allowing Depth:
+	 * infinity is potentially risky, as it allows a single client to do a full
+	 * index of the webdav server, which is an easy DoS attack vector.
+	 *
+	 * Only turn this on if you know what you're doing.
+	 *
+	 * @var bool
+	 */
+	public $enablePropfindDepthInfinity = false;
+
+	/**
+	 * Reference to the XML utility object.
+	 *
+	 * @var Xml\Service
+	 */
+	public $xml;
+
+	/**
+	 * If this setting is turned off, SabreDAV's version number will be hidden
+	 * from various places.
+	 *
+	 * Some people feel this is a good security measure.
+	 *
+	 * @var bool
+	 */
+	public static $exposeVersion = true;
+
+	/**
+	 * If this setting is turned on, any multi status response on any PROPFIND will be streamed to the output buffer.
+	 * This will be beneficial for large result sets which will no longer consume a large amount of memory as well as
+	 * send back data to the client earlier.
+	 *
+	 * @var bool
+	 */
+	public static $streamMultiStatus = false;
+
+	/**
+	 * Sets up the server.
+	 *
+	 * If a Sabre\DAV\Tree object is passed as an argument, it will
+	 * use it as the directory tree. If a Sabre\DAV\INode is passed, it
+	 * will create a Sabre\DAV\Tree and use the node as the root.
+	 *
+	 * If nothing is passed, a Sabre\DAV\SimpleCollection is created in
+	 * a Sabre\DAV\Tree.
+	 *
+	 * If an array is passed, we automatically create a root node, and use
+	 * the nodes in the array as top-level children.
+	 *
+	 * @param Tree|INode|array|null $treeOrNode The tree object
+	 *
+	 * @throws Exception
+	 */
+	public function __construct($treeOrNode = null, HTTP\Sapi $sapi = null)
+	{
+		if ($treeOrNode instanceof Tree) {
+			$this->tree = $treeOrNode;
+		} elseif ($treeOrNode instanceof INode) {
+			$this->tree = new Tree($treeOrNode);
+		} elseif (is_array($treeOrNode)) {
+			$root = new SimpleCollection('root', $treeOrNode);
+			$this->tree = new Tree($root);
+		} elseif (is_null($treeOrNode)) {
+			$root = new SimpleCollection('root');
+			$this->tree = new Tree($root);
+		} else {
+			throw new Exception('Invalid argument passed to constructor. Argument must either be an instance of Sabre\\DAV\\Tree, Sabre\\DAV\\INode, an array or null');
+		}
+
+		$this->xml = new Xml\Service();
+		$this->sapi = $sapi ?? new HTTP\Sapi();
+		$this->httpResponse = new HTTP\Response();
+		$this->httpRequest = $this->sapi->getRequest();
+		$this->addPlugin(new CorePlugin());
+	}
+
+	/**
+	 * Starts the DAV Server.
+	 */
+	public function start()
+	{
+		try {
+			// If nginx (pre-1.2) is used as a proxy server, and SabreDAV as an
+			// origin, we must make sure we send back HTTP/1.0 if this was
+			// requested.
+			// This is mainly because nginx doesn't support Chunked Transfer
+			// Encoding, and this forces the webserver SabreDAV is running on,
+			// to buffer entire responses to calculate Content-Length.
+			$this->httpResponse->setHTTPVersion($this->httpRequest->getHTTPVersion());
+
+			// Setting the base url
+			$this->httpRequest->setBaseUrl($this->getBaseUri());
+			$this->invokeMethod($this->httpRequest, $this->httpResponse);
+		} catch (\Throwable $e) {
+			try {
+				$this->emit('exception', [$e]);
+			} catch (\Exception $ignore) {
+			}
+			$DOM = new \DOMDocument('1.0', 'utf-8');
+			$DOM->formatOutput = true;
+
+			$error = $DOM->createElementNS('DAV:', 'd:error');
+			$error->setAttribute('xmlns:s', self::NS_SABREDAV);
+			$DOM->appendChild($error);
+
+			$h = function ($v) {
+				return htmlspecialchars((string) $v, ENT_NOQUOTES, 'UTF-8');
+			};
+
+			if (self::$exposeVersion) {
+				$error->appendChild($DOM->createElement('s:sabredav-version', $h(Version::VERSION)));
+			}
+
+			$error->appendChild($DOM->createElement('s:exception', $h(get_class($e))));
+			$error->appendChild($DOM->createElement('s:message', $h($e->getMessage())));
+			if ($this->debugExceptions) {
+				$error->appendChild($DOM->createElement('s:file', $h($e->getFile())));
+				$error->appendChild($DOM->createElement('s:line', $h($e->getLine())));
+				$error->appendChild($DOM->createElement('s:code', $h($e->getCode())));
+				$error->appendChild($DOM->createElement('s:stacktrace', $h($e->getTraceAsString())));
+			}
+
+			if ($this->debugExceptions) {
+				$previous = $e;
+				while ($previous = $previous->getPrevious()) {
+					$xPrevious = $DOM->createElement('s:previous-exception');
+					$xPrevious->appendChild($DOM->createElement('s:exception', $h(get_class($previous))));
+					$xPrevious->appendChild($DOM->createElement('s:message', $h($previous->getMessage())));
+					$xPrevious->appendChild($DOM->createElement('s:file', $h($previous->getFile())));
+					$xPrevious->appendChild($DOM->createElement('s:line', $h($previous->getLine())));
+					$xPrevious->appendChild($DOM->createElement('s:code', $h($previous->getCode())));
+					$xPrevious->appendChild($DOM->createElement('s:stacktrace', $h($previous->getTraceAsString())));
+					$error->appendChild($xPrevious);
+				}
+			}
+
+			if ($e instanceof Exception) {
+				$httpCode = $e->getHTTPCode();
+				$e->serialize($this, $error);
+				$headers = $e->getHTTPHeaders($this);
+			} else {
+				$httpCode = 500;
+				$headers = [];
+			}
+			$headers['Content-Type'] = 'application/xml; charset=utf-8';
+
+			$this->httpResponse->setStatus($httpCode);
+			$this->httpResponse->setHeaders($headers);
+			$this->httpResponse->setBody($DOM->saveXML());
+			$this->sapi->sendResponse($this->httpResponse);
+		}
+	}
+
+	/**
+	 * Alias of start().
+	 *
+	 * @deprecated
+	 */
+	public function exec()
+	{
+		$this->start();
+	}
+
+	/**
+	 * Sets the base server uri.
+	 *
+	 * @param string $uri
+	 */
+	public function setBaseUri($uri)
+	{
+		// If the baseUri does not end with a slash, we must add it
+		if ('/' !== $uri[strlen($uri) - 1]) {
+			$uri .= '/';
+		}
+
+		$this->baseUri = $uri;
+	}
+
+	/**
+	 * Returns the base responding uri.
+	 *
+	 * @return string
+	 */
+	public function getBaseUri()
+	{
+		if (is_null($this->baseUri)) {
+			$this->baseUri = $this->guessBaseUri();
+		}
+
+		return $this->baseUri;
+	}
+
+	/**
+	 * This method attempts to detect the base uri.
+	 * Only the PATH_INFO variable is considered.
+	 *
+	 * If this variable is not set, the root (/) is assumed.
+	 *
+	 * @return string
+	 */
+	public function guessBaseUri()
+	{
+		$pathInfo = $this->httpRequest->getRawServerValue('PATH_INFO');
+		$uri = $this->httpRequest->getRawServerValue('REQUEST_URI');
+
+		// If PATH_INFO is found, we can assume it's accurate.
+		if (!empty($pathInfo)) {
+			// We need to make sure we ignore the QUERY_STRING part
+			if ($pos = strpos($uri, '?')) {
+				$uri = substr($uri, 0, $pos);
+			}
+
+			// PATH_INFO is only set for urls, such as: /example.php/path
+			// in that case PATH_INFO contains '/path'.
+			// Note that REQUEST_URI is percent encoded, while PATH_INFO is
+			// not, Therefore they are only comparable if we first decode
+			// REQUEST_INFO as well.
+			$decodedUri = HTTP\decodePath($uri);
+
+			// A simple sanity check:
+			if (substr($decodedUri, strlen($decodedUri) - strlen($pathInfo)) === $pathInfo) {
+				$baseUri = substr($decodedUri, 0, strlen($decodedUri) - strlen($pathInfo));
+
+				return rtrim($baseUri, '/').'/';
+			}
+
+			throw new Exception('The REQUEST_URI ('.$uri.') did not end with the contents of PATH_INFO ('.$pathInfo.'). This server might be misconfigured.');
+		}
+
+		// The last fallback is that we're just going to assume the server root.
+		return '/';
+	}
+
+	/**
+	 * Adds a plugin to the server.
+	 *
+	 * For more information, console the documentation of Sabre\DAV\ServerPlugin
+	 */
+	public function addPlugin(ServerPlugin $plugin)
+	{
+		$this->plugins[$plugin->getPluginName()] = $plugin;
+		$plugin->initialize($this);
+	}
+
+	/**
+	 * Returns an initialized plugin by it's name.
+	 *
+	 * This function returns null if the plugin was not found.
+	 *
+	 * @param string $name
+	 *
+	 * @return ServerPlugin
+	 */
+	public function getPlugin($name)
+	{
+		if (isset($this->plugins[$name])) {
+			return $this->plugins[$name];
+		}
+
+		return null;
+	}
+
+	/**
+	 * Returns all plugins.
+	 *
+	 * @return array
+	 */
+	public function getPlugins()
+	{
+		return $this->plugins;
+	}
+
+	/**
+	 * Returns the PSR-3 logger object.
+	 *
+	 * @return LoggerInterface
+	 */
+	public function getLogger()
+	{
+		if (!$this->logger) {
+			$this->logger = new NullLogger();
+		}
+
+		return $this->logger;
+	}
+
+	/**
+	 * Handles a http request, and execute a method based on its name.
+	 *
+	 * @param bool $sendResponse whether to send the HTTP response to the DAV client
+	 */
+	public function invokeMethod(RequestInterface $request, ResponseInterface $response, $sendResponse = true)
+	{
+		$method = $request->getMethod();
+
+		if (!$this->emit('beforeMethod:'.$method, [$request, $response])) {
+			return;
+		}
+
+		if (self::$exposeVersion) {
+			$response->setHeader('X-Sabre-Version', Version::VERSION);
+		}
+
+		$this->transactionType = strtolower($method);
+
+		if (!$this->checkPreconditions($request, $response)) {
+			$this->sapi->sendResponse($response);
+
+			return;
+		}
+
+		if ($this->emit('method:'.$method, [$request, $response])) {
+			$exMessage = 'There was no plugin in the system that was willing to handle this '.$method.' method.';
+			if ('GET' === $method) {
+				$exMessage .= ' Enable the Browser plugin to get a better result here.';
+			}
+
+			// Unsupported method
+			throw new Exception\NotImplemented($exMessage);
+		}
+
+		if (!$this->emit('afterMethod:'.$method, [$request, $response])) {
+			return;
+		}
+
+		if (null === $response->getStatus()) {
+			throw new Exception('No subsystem set a valid HTTP status code. Something must have interrupted the request without providing further detail.');
+		}
+		if ($sendResponse) {
+			$this->sapi->sendResponse($response);
+			$this->emit('afterResponse', [$request, $response]);
+		}
+	}
+
+	// {{{ HTTP/WebDAV protocol helpers
+
+	/**
+	 * Returns an array with all the supported HTTP methods for a specific uri.
+	 *
+	 * @param string $path
+	 *
+	 * @return array
+	 */
+	public function getAllowedMethods($path)
+	{
+		$methods = [
+			'OPTIONS',
+			'GET',
+			'HEAD',
+			'DELETE',
+			'PROPFIND',
+			'PUT',
+			'PROPPATCH',
+			'COPY',
+			'MOVE',
+			'REPORT',
+		];
+
+		// The MKCOL is only allowed on an unmapped uri
+		try {
+			$this->tree->getNodeForPath($path);
+		} catch (Exception\NotFound $e) {
+			$methods[] = 'MKCOL';
+		}
+
+		// We're also checking if any of the plugins register any new methods
+		foreach ($this->plugins as $plugin) {
+			$methods = array_merge($methods, $plugin->getHTTPMethods($path));
+		}
+		array_unique($methods);
+
+		return $methods;
+	}
+
+	/**
+	 * Gets the uri for the request, keeping the base uri into consideration.
+	 *
+	 * @return string
+	 */
+	public function getRequestUri()
+	{
+		return $this->calculateUri($this->httpRequest->getUrl());
+	}
+
+	/**
+	 * Turns a URI such as the REQUEST_URI into a local path.
+	 *
+	 * This method:
+	 *   * strips off the base path
+	 *   * normalizes the path
+	 *   * uri-decodes the path
+	 *
+	 * @param string $uri
+	 *
+	 * @throws Exception\Forbidden A permission denied exception is thrown whenever there was an attempt to supply a uri outside of the base uri
+	 *
+	 * @return string
+	 */
+	public function calculateUri($uri)
+	{
+		if ('' != $uri && '/' != $uri[0] && strpos($uri, '://')) {
+			$uri = parse_url($uri, PHP_URL_PATH);
+		}
+
+		$uri = Uri\normalize(preg_replace('|/+|', '/', $uri));
+		$baseUri = Uri\normalize($this->getBaseUri());
+
+		if (0 === strpos($uri, $baseUri)) {
+			return trim(HTTP\decodePath(substr($uri, strlen($baseUri))), '/');
+
+		// A special case, if the baseUri was accessed without a trailing
+		// slash, we'll accept it as well.
+		} elseif ($uri.'/' === $baseUri) {
+			return '';
+		} else {
+			throw new Exception\Forbidden('Requested uri ('.$uri.') is out of base uri ('.$this->getBaseUri().')');
+		}
+	}
+
+	/**
+	 * Returns the HTTP depth header.
+	 *
+	 * This method returns the contents of the HTTP depth request header. If the depth header was 'infinity' it will return the Sabre\DAV\Server::DEPTH_INFINITY object
+	 * It is possible to supply a default depth value, which is used when the depth header has invalid content, or is completely non-existent
+	 *
+	 * @param mixed $default
+	 *
+	 * @return int
+	 */
+	public function getHTTPDepth($default = self::DEPTH_INFINITY)
+	{
+		// If its not set, we'll grab the default
+		$depth = $this->httpRequest->getHeader('Depth');
+
+		if (is_null($depth)) {
+			return $default;
+		}
+
+		if ('infinity' == $depth) {
+			return self::DEPTH_INFINITY;
+		}
+
+		// If its an unknown value. we'll grab the default
+		if (!ctype_digit($depth)) {
+			return $default;
+		}
+
+		return (int) $depth;
+	}
+
+	/**
+	 * Returns the HTTP range header.
+	 *
+	 * This method returns null if there is no well-formed HTTP range request
+	 * header or array($start, $end).
+	 *
+	 * The first number is the offset of the first byte in the range.
+	 * The second number is the offset of the last byte in the range.
+	 *
+	 * If the second offset is null, it should be treated as the offset of the last byte of the entity
+	 * If the first offset is null, the second offset should be used to retrieve the last x bytes of the entity
+	 *
+	 * @return int[]|null
+	 */
+	public function getHTTPRange()
+	{
+		$range = $this->httpRequest->getHeader('range');
+		if (is_null($range)) {
+			return null;
+		}
+
+		// Matching "Range: bytes=1234-5678: both numbers are optional
+
+		if (!preg_match('/^bytes=([0-9]*)-([0-9]*)$/i', $range, $matches)) {
+			return null;
+		}
+
+		if ('' === $matches[1] && '' === $matches[2]) {
+			return null;
+		}
+
+		return [
+			'' !== $matches[1] ? (int) $matches[1] : null,
+			'' !== $matches[2] ? (int) $matches[2] : null,
+		];
+	}
+
+	/**
+	 * Returns the HTTP Prefer header information.
+	 *
+	 * The prefer header is defined in:
+	 * http://tools.ietf.org/html/draft-snell-http-prefer-14
+	 *
+	 * This method will return an array with options.
+	 *
+	 * Currently, the following options may be returned:
+	 *  [
+	 *      'return-asynch'         => true,
+	 *      'return-minimal'        => true,
+	 *      'return-representation' => true,
+	 *      'wait'                  => 30,
+	 *      'strict'                => true,
+	 *      'lenient'               => true,
+	 *  ]
+	 *
+	 * This method also supports the Brief header, and will also return
+	 * 'return-minimal' if the brief header was set to 't'.
+	 *
+	 * For the boolean options, false will be returned if the headers are not
+	 * specified. For the integer options it will be 'null'.
+	 *
+	 * @return array
+	 */
+	public function getHTTPPrefer()
+	{
+		$result = [
+			// can be true or false
+			'respond-async' => false,
+			// Could be set to 'representation' or 'minimal'.
+			'return' => null,
+			// Used as a timeout, is usually a number.
+			'wait' => null,
+			// can be 'strict' or 'lenient'.
+			'handling' => false,
+		];
+
+		if ($prefer = $this->httpRequest->getHeader('Prefer')) {
+			$result = array_merge(
+				$result,
+				HTTP\parsePrefer($prefer)
+			);
+		} elseif ('t' == $this->httpRequest->getHeader('Brief')) {
+			$result['return'] = 'minimal';
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Returns information about Copy and Move requests.
+	 *
+	 * This function is created to help getting information about the source and the destination for the
+	 * WebDAV MOVE and COPY HTTP request. It also validates a lot of information and throws proper exceptions
+	 *
+	 * The returned value is an array with the following keys:
+	 *   * destination - Destination path
+	 *   * destinationExists - Whether or not the destination is an existing url (and should therefore be overwritten)
+	 *
+	 * @throws Exception\BadRequest           upon missing or broken request headers
+	 * @throws Exception\UnsupportedMediaType when trying to copy into a
+	 *                                        non-collection
+	 * @throws Exception\PreconditionFailed   if overwrite is set to false, but
+	 *                                        the destination exists
+	 * @throws Exception\Forbidden            when source and destination paths are
+	 *                                        identical
+	 * @throws Exception\Conflict             when trying to copy a node into its own
+	 *                                        subtree
+	 *
+	 * @return array
+	 */
+	public function getCopyAndMoveInfo(RequestInterface $request)
+	{
+		// Collecting the relevant HTTP headers
+		if (!$request->getHeader('Destination')) {
+			throw new Exception\BadRequest('The destination header was not supplied');
+		}
+		$destination = $this->calculateUri($request->getHeader('Destination'));
+		$overwrite = $request->getHeader('Overwrite');
+		if (!$overwrite) {
+			$overwrite = 'T';
+		}
+		if ('T' == strtoupper($overwrite)) {
+			$overwrite = true;
+		} elseif ('F' == strtoupper($overwrite)) {
+			$overwrite = false;
+		}
+		// We need to throw a bad request exception, if the header was invalid
+		else {
+			throw new Exception\BadRequest('The HTTP Overwrite header should be either T or F');
+		}
+		list($destinationDir) = Uri\split($destination);
+
+		try {
+			$destinationParent = $this->tree->getNodeForPath($destinationDir);
+			if (!($destinationParent instanceof ICollection)) {
+				throw new Exception\UnsupportedMediaType('The destination node is not a collection');
+			}
+		} catch (Exception\NotFound $e) {
+			// If the destination parent node is not found, we throw a 409
+			throw new Exception\Conflict('The destination node is not found');
+		}
+
+		try {
+			$destinationNode = $this->tree->getNodeForPath($destination);
+
+			// If this succeeded, it means the destination already exists
+			// we'll need to throw precondition failed in case overwrite is false
+			if (!$overwrite) {
+				throw new Exception\PreconditionFailed('The destination node already exists, and the overwrite header is set to false', 'Overwrite');
+			}
+		} catch (Exception\NotFound $e) {
+			// Destination didn't exist, we're all good
+			$destinationNode = false;
+		}
+
+		$requestPath = $request->getPath();
+		if ($destination === $requestPath) {
+			throw new Exception\Forbidden('Source and destination uri are identical.');
+		}
+		if (substr($destination, 0, strlen($requestPath) + 1) === $requestPath.'/') {
+			throw new Exception\Conflict('The destination may not be part of the same subtree as the source path.');
+		}
+
+		// These are the three relevant properties we need to return
+		return [
+			'destination' => $destination,
+			'destinationExists' => (bool) $destinationNode,
+			'destinationNode' => $destinationNode,
+		];
+	}
+
+	/**
+	 * Returns a list of properties for a path.
+	 *
+	 * This is a simplified version getPropertiesForPath. If you aren't
+	 * interested in status codes, but you just want to have a flat list of
+	 * properties, use this method.
+	 *
+	 * Please note though that any problems related to retrieving properties,
+	 * such as permission issues will just result in an empty array being
+	 * returned.
+	 *
+	 * @param string $path
+	 * @param array  $propertyNames
+	 *
+	 * @return array
+	 */
+	public function getProperties($path, $propertyNames)
+	{
+		$result = $this->getPropertiesForPath($path, $propertyNames, 0);
+		if (isset($result[0][200])) {
+			return $result[0][200];
+		} else {
+			return [];
+		}
+	}
+
+	/**
+	 * A kid-friendly way to fetch properties for a node's children.
+	 *
+	 * The returned array will be indexed by the path of the of child node.
+	 * Only properties that are actually found will be returned.
+	 *
+	 * The parent node will not be returned.
+	 *
+	 * @param string $path
+	 * @param array  $propertyNames
+	 *
+	 * @return array
+	 */
+	public function getPropertiesForChildren($path, $propertyNames)
+	{
+		$result = [];
+		foreach ($this->getPropertiesForPath($path, $propertyNames, 1) as $k => $row) {
+			// Skipping the parent path
+			if (0 === $k) {
+				continue;
+			}
+
+			$result[$row['href']] = $row[200];
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Returns a list of HTTP headers for a particular resource.
+	 *
+	 * The generated http headers are based on properties provided by the
+	 * resource. The method basically provides a simple mapping between
+	 * DAV property and HTTP header.
+	 *
+	 * The headers are intended to be used for HEAD and GET requests.
+	 *
+	 * @param string $path
+	 *
+	 * @return array
+	 */
+	public function getHTTPHeaders($path)
+	{
+		$propertyMap = [
+			'{DAV:}getcontenttype' => 'Content-Type',
+			'{DAV:}getcontentlength' => 'Content-Length',
+			'{DAV:}getlastmodified' => 'Last-Modified',
+			'{DAV:}getetag' => 'ETag',
+		];
+
+		$properties = $this->getProperties($path, array_keys($propertyMap));
+
+		$headers = [];
+		foreach ($propertyMap as $property => $header) {
+			if (!isset($properties[$property])) {
+				continue;
+			}
+
+			if (is_scalar($properties[$property])) {
+				$headers[$header] = $properties[$property];
+
+			// GetLastModified gets special cased
+			} elseif ($properties[$property] instanceof Xml\Property\GetLastModified) {
+				$headers[$header] = HTTP\toDate($properties[$property]->getTime());
+			}
+		}
+
+		return $headers;
+	}
+
+	/**
+	 * Small helper to support PROPFIND with DEPTH_INFINITY.
+	 *
+	 * @param array $yieldFirst
+	 *
+	 * @return \Traversable
+	 */
+	private function generatePathNodes(PropFind $propFind, array $yieldFirst = null)
+	{
+		if (null !== $yieldFirst) {
+			yield $yieldFirst;
+		}
+		$newDepth = $propFind->getDepth();
+		$path = $propFind->getPath();
+
+		if (self::DEPTH_INFINITY !== $newDepth) {
+			--$newDepth;
+		}
+
+		$propertyNames = $propFind->getRequestedProperties();
+		$propFindType = !$propFind->isAllProps() ? PropFind::NORMAL : PropFind::ALLPROPS;
+
+		foreach ($this->tree->getChildren($path) as $childNode) {
+			if ('' !== $path) {
+				$subPath = $path.'/'.$childNode->getName();
+			} else {
+				$subPath = $childNode->getName();
+			}
+			$subPropFind = new PropFind($subPath, $propertyNames, $newDepth, $propFindType);
+
+			yield [
+				$subPropFind,
+				$childNode,
+			];
+
+			if ((self::DEPTH_INFINITY === $newDepth || $newDepth >= 1) && $childNode instanceof ICollection) {
+				foreach ($this->generatePathNodes($subPropFind) as $subItem) {
+					yield $subItem;
+				}
+			}
+		}
+	}
+
+	/**
+	 * Returns a list of properties for a given path.
+	 *
+	 * The path that should be supplied should have the baseUrl stripped out
+	 * The list of properties should be supplied in Clark notation. If the list is empty
+	 * 'allprops' is assumed.
+	 *
+	 * If a depth of 1 is requested child elements will also be returned.
+	 *
+	 * @param string $path
+	 * @param array  $propertyNames
+	 * @param int    $depth
+	 *
+	 * @return array
+	 *
+	 * @deprecated Use getPropertiesIteratorForPath() instead (as it's more memory efficient)
+	 * @see getPropertiesIteratorForPath()
+	 */
+	public function getPropertiesForPath($path, $propertyNames = [], $depth = 0)
+	{
+		return iterator_to_array($this->getPropertiesIteratorForPath($path, $propertyNames, $depth));
+	}
+
+	/**
+	 * Returns a list of properties for a given path.
+	 *
+	 * The path that should be supplied should have the baseUrl stripped out
+	 * The list of properties should be supplied in Clark notation. If the list is empty
+	 * 'allprops' is assumed.
+	 *
+	 * If a depth of 1 is requested child elements will also be returned.
+	 *
+	 * @param string $path
+	 * @param array  $propertyNames
+	 * @param int    $depth
+	 *
+	 * @return \Iterator
+	 */
+	public function getPropertiesIteratorForPath($path, $propertyNames = [], $depth = 0)
+	{
+		// The only two options for the depth of a propfind is 0 or 1 - as long as depth infinity is not enabled
+		if (!$this->enablePropfindDepthInfinity && 0 != $depth) {
+			$depth = 1;
+		}
+
+		$path = trim($path, '/');
+
+		$propFindType = $propertyNames ? PropFind::NORMAL : PropFind::ALLPROPS;
+		$propFind = new PropFind($path, (array) $propertyNames, $depth, $propFindType);
+
+		$parentNode = $this->tree->getNodeForPath($path);
+
+		$propFindRequests = [[
+			$propFind,
+			$parentNode,
+		]];
+
+		if (($depth > 0 || self::DEPTH_INFINITY === $depth) && $parentNode instanceof ICollection) {
+			$propFindRequests = $this->generatePathNodes(clone $propFind, current($propFindRequests));
+		}
+
+		foreach ($propFindRequests as $propFindRequest) {
+			list($propFind, $node) = $propFindRequest;
+			$r = $this->getPropertiesByNode($propFind, $node);
+			if ($r) {
+				$result = $propFind->getResultForMultiStatus();
+				$result['href'] = $propFind->getPath();
+
+				// WebDAV recommends adding a slash to the path, if the path is
+				// a collection.
+				// Furthermore, iCal also demands this to be the case for
+				// principals. This is non-standard, but we support it.
+				$resourceType = $this->getResourceTypeForNode($node);
+				if (in_array('{DAV:}collection', $resourceType) || in_array('{DAV:}principal', $resourceType)) {
+					$result['href'] .= '/';
+				}
+				yield $result;
+			}
+		}
+	}
+
+	/**
+	 * Returns a list of properties for a list of paths.
+	 *
+	 * The path that should be supplied should have the baseUrl stripped out
+	 * The list of properties should be supplied in Clark notation. If the list is empty
+	 * 'allprops' is assumed.
+	 *
+	 * The result is returned as an array, with paths for it's keys.
+	 * The result may be returned out of order.
+	 *
+	 * @return array
+	 */
+	public function getPropertiesForMultiplePaths(array $paths, array $propertyNames = [])
+	{
+		$result = [
+		];
+
+		$nodes = $this->tree->getMultipleNodes($paths);
+
+		foreach ($nodes as $path => $node) {
+			$propFind = new PropFind($path, $propertyNames);
+			$r = $this->getPropertiesByNode($propFind, $node);
+			if ($r) {
+				$result[$path] = $propFind->getResultForMultiStatus();
+				$result[$path]['href'] = $path;
+
+				$resourceType = $this->getResourceTypeForNode($node);
+				if (in_array('{DAV:}collection', $resourceType) || in_array('{DAV:}principal', $resourceType)) {
+					$result[$path]['href'] .= '/';
+				}
+			}
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Determines all properties for a node.
+	 *
+	 * This method tries to grab all properties for a node. This method is used
+	 * internally getPropertiesForPath and a few others.
+	 *
+	 * It could be useful to call this, if you already have an instance of your
+	 * target node and simply want to run through the system to get a correct
+	 * list of properties.
+	 *
+	 * @return bool
+	 */
+	public function getPropertiesByNode(PropFind $propFind, INode $node)
+	{
+		return $this->emit('propFind', [$propFind, $node]);
+	}
+
+	/**
+	 * This method is invoked by sub-systems creating a new file.
+	 *
+	 * Currently this is done by HTTP PUT and HTTP LOCK (in the Locks_Plugin).
+	 * It was important to get this done through a centralized function,
+	 * allowing plugins to intercept this using the beforeCreateFile event.
+	 *
+	 * This method will return true if the file was actually created
+	 *
+	 * @param string   $uri
+	 * @param resource $data
+	 * @param string   $etag
+	 *
+	 * @return bool
+	 */
+	public function createFile($uri, $data, &$etag = null)
+	{
+		list($dir, $name) = Uri\split($uri);
+
+		if (!$this->emit('beforeBind', [$uri])) {
+			return false;
+		}
+
+		try {
+			$parent = $this->tree->getNodeForPath($dir);
+		} catch (Exception\NotFound $e) {
+			throw new Exception\Conflict('Files cannot be created in non-existent collections');
+		}
+
+		if (!$parent instanceof ICollection) {
+			throw new Exception\Conflict('Files can only be created as children of collections');
+		}
+
+		// It is possible for an event handler to modify the content of the
+		// body, before it gets written. If this is the case, $modified
+		// should be set to true.
+		//
+		// If $modified is true, we must not send back an ETag.
+		$modified = false;
+		if (!$this->emit('beforeCreateFile', [$uri, &$data, $parent, &$modified])) {
+			return false;
+		}
+
+		$etag = $parent->createFile($name, $data);
+
+		if ($modified) {
+			$etag = null;
+		}
+
+		$this->tree->markDirty($dir.'/'.$name);
+
+		$this->emit('afterBind', [$uri]);
+		$this->emit('afterCreateFile', [$uri, $parent]);
+
+		return true;
+	}
+
+	/**
+	 * This method is invoked by sub-systems updating a file.
+	 *
+	 * This method will return true if the file was actually updated
+	 *
+	 * @param string   $uri
+	 * @param resource $data
+	 * @param string   $etag
+	 *
+	 * @return bool
+	 */
+	public function updateFile($uri, $data, &$etag = null)
+	{
+		$node = $this->tree->getNodeForPath($uri);
+
+		// It is possible for an event handler to modify the content of the
+		// body, before it gets written. If this is the case, $modified
+		// should be set to true.
+		//
+		// If $modified is true, we must not send back an ETag.
+		$modified = false;
+		if (!$this->emit('beforeWriteContent', [$uri, $node, &$data, &$modified])) {
+			return false;
+		}
+
+		$etag = $node->put($data);
+		if ($modified) {
+			$etag = null;
+		}
+		$this->emit('afterWriteContent', [$uri, $node]);
+
+		return true;
+	}
+
+	/**
+	 * This method is invoked by sub-systems creating a new directory.
+	 *
+	 * @param string $uri
+	 */
+	public function createDirectory($uri)
+	{
+		$this->createCollection($uri, new MkCol(['{DAV:}collection'], []));
+	}
+
+	/**
+	 * Use this method to create a new collection.
+	 *
+	 * @param string $uri The new uri
+	 *
+	 * @return array|null
+	 */
+	public function createCollection($uri, MkCol $mkCol)
+	{
+		list($parentUri, $newName) = Uri\split($uri);
+
+		// Making sure the parent exists
+		try {
+			$parent = $this->tree->getNodeForPath($parentUri);
+		} catch (Exception\NotFound $e) {
+			throw new Exception\Conflict('Parent node does not exist');
+		}
+
+		// Making sure the parent is a collection
+		if (!$parent instanceof ICollection) {
+			throw new Exception\Conflict('Parent node is not a collection');
+		}
+
+		// Making sure the child does not already exist
+		try {
+			$parent->getChild($newName);
+
+			// If we got here.. it means there's already a node on that url, and we need to throw a 405
+			throw new Exception\MethodNotAllowed('The resource you tried to create already exists');
+		} catch (Exception\NotFound $e) {
+			// NotFound is the expected behavior.
+		}
+
+		if (!$this->emit('beforeBind', [$uri])) {
+			return;
+		}
+
+		if ($parent instanceof IExtendedCollection) {
+			/*
              * If the parent is an instance of IExtendedCollection, it means that
              * we can pass the MkCol object directly as it may be able to store
              * properties immediately.
              */
-            $parent->createExtendedCollection($newName, $mkCol);
-        } else {
-            /*
+			$parent->createExtendedCollection($newName, $mkCol);
+		} else {
+			/*
              * If the parent is a standard ICollection, it means only
              * 'standard' collections can be created, so we should fail any
              * MKCOL operation that carries extra resourcetypes.
              */
-            if (count($mkCol->getResourceType()) > 1) {
-                throw new Exception\InvalidResourceType('The {DAV:}resourcetype you specified is not supported here.');
-            }
-
-            $parent->createDirectory($newName);
-        }
-
-        // If there are any properties that have not been handled/stored,
-        // we ask the 'propPatch' event to handle them. This will allow for
-        // example the propertyStorage system to store properties upon MKCOL.
-        if ($mkCol->getRemainingMutations()) {
-            $this->emit('propPatch', [$uri, $mkCol]);
-        }
-        $success = $mkCol->commit();
-
-        if (!$success) {
-            $result = $mkCol->getResult();
-
-            $formattedResult = [
-                'href' => $uri,
-            ];
-
-            foreach ($result as $propertyName => $status) {
-                if (!isset($formattedResult[$status])) {
-                    $formattedResult[$status] = [];
-                }
-                $formattedResult[$status][$propertyName] = null;
-            }
-
-            return $formattedResult;
-        }
-
-        $this->tree->markDirty($parentUri);
-        $this->emit('afterBind', [$uri]);
-        $this->emit('afterCreateCollection', [$uri]);
-    }
-
-    /**
-     * This method updates a resource's properties.
-     *
-     * The properties array must be a list of properties. Array-keys are
-     * property names in clarknotation, array-values are it's values.
-     * If a property must be deleted, the value should be null.
-     *
-     * Note that this request should either completely succeed, or
-     * completely fail.
-     *
-     * The response is an array with properties for keys, and http status codes
-     * as their values.
-     *
-     * @param string $path
-     *
-     * @return array
-     */
-    public function updateProperties($path, array $properties)
-    {
-        $propPatch = new PropPatch($properties);
-        $this->emit('propPatch', [$path, $propPatch]);
-        $propPatch->commit();
-
-        return $propPatch->getResult();
-    }
-
-    /**
-     * This method checks the main HTTP preconditions.
-     *
-     * Currently these are:
-     *   * If-Match
-     *   * If-None-Match
-     *   * If-Modified-Since
-     *   * If-Unmodified-Since
-     *
-     * The method will return true if all preconditions are met
-     * The method will return false, or throw an exception if preconditions
-     * failed. If false is returned the operation should be aborted, and
-     * the appropriate HTTP response headers are already set.
-     *
-     * Normally this method will throw 412 Precondition Failed for failures
-     * related to If-None-Match, If-Match and If-Unmodified Since. It will
-     * set the status to 304 Not Modified for If-Modified_since.
-     *
-     * @return bool
-     */
-    public function checkPreconditions(RequestInterface $request, ResponseInterface $response)
-    {
-        $path = $request->getPath();
-        $node = null;
-        $lastMod = null;
-        $etag = null;
-
-        if ($ifMatch = $request->getHeader('If-Match')) {
-            // If-Match contains an entity tag. Only if the entity-tag
-            // matches we are allowed to make the request succeed.
-            // If the entity-tag is '*' we are only allowed to make the
-            // request succeed if a resource exists at that url.
-            try {
-                $node = $this->tree->getNodeForPath($path);
-            } catch (Exception\NotFound $e) {
-                throw new Exception\PreconditionFailed('An If-Match header was specified and the resource did not exist', 'If-Match');
-            }
-
-            // Only need to check entity tags if they are not *
-            if ('*' !== $ifMatch) {
-                // There can be multiple ETags
-                $ifMatch = explode(',', $ifMatch);
-                $haveMatch = false;
-                foreach ($ifMatch as $ifMatchItem) {
-                    // Stripping any extra spaces
-                    $ifMatchItem = trim($ifMatchItem, ' ');
-
-                    $etag = $node instanceof IFile ? $node->getETag() : null;
-                    if ($etag === $ifMatchItem) {
-                        $haveMatch = true;
-                    } else {
-                        // Evolution has a bug where it sometimes prepends the "
-                        // with a \. This is our workaround.
-                        if (str_replace('\\"', '"', $ifMatchItem) === $etag) {
-                            $haveMatch = true;
-                        }
-                    }
-                }
-                if (!$haveMatch) {
-                    if ($etag) {
-                        $response->setHeader('ETag', $etag);
-                    }
-                    throw new Exception\PreconditionFailed('An If-Match header was specified, but none of the specified ETags matched.', 'If-Match');
-                }
-            }
-        }
-
-        if ($ifNoneMatch = $request->getHeader('If-None-Match')) {
-            // The If-None-Match header contains an ETag.
-            // Only if the ETag does not match the current ETag, the request will succeed
-            // The header can also contain *, in which case the request
-            // will only succeed if the entity does not exist at all.
-            $nodeExists = true;
-            if (!$node) {
-                try {
-                    $node = $this->tree->getNodeForPath($path);
-                } catch (Exception\NotFound $e) {
-                    $nodeExists = false;
-                }
-            }
-            if ($nodeExists) {
-                $haveMatch = false;
-                if ('*' === $ifNoneMatch) {
-                    $haveMatch = true;
-                } else {
-                    // There might be multiple ETags
-                    $ifNoneMatch = explode(',', $ifNoneMatch);
-                    $etag = $node instanceof IFile ? $node->getETag() : null;
-
-                    foreach ($ifNoneMatch as $ifNoneMatchItem) {
-                        // Stripping any extra spaces
-                        $ifNoneMatchItem = trim($ifNoneMatchItem, ' ');
-
-                        if ($etag === $ifNoneMatchItem) {
-                            $haveMatch = true;
-                        }
-                    }
-                }
-
-                if ($haveMatch) {
-                    if ($etag) {
-                        $response->setHeader('ETag', $etag);
-                    }
-                    if ('GET' === $request->getMethod()) {
-                        $response->setStatus(304);
-
-                        return false;
-                    } else {
-                        throw new Exception\PreconditionFailed('An If-None-Match header was specified, but the ETag matched (or * was specified).', 'If-None-Match');
-                    }
-                }
-            }
-        }
-
-        if (!$ifNoneMatch && ($ifModifiedSince = $request->getHeader('If-Modified-Since'))) {
-            // The If-Modified-Since header contains a date. We
-            // will only return the entity if it has been changed since
-            // that date. If it hasn't been changed, we return a 304
-            // header
-            // Note that this header only has to be checked if there was no If-None-Match header
-            // as per the HTTP spec.
-            $date = HTTP\parseDate($ifModifiedSince);
-
-            if ($date) {
-                if (is_null($node)) {
-                    $node = $this->tree->getNodeForPath($path);
-                }
-                $lastMod = $node->getLastModified();
-                if ($lastMod) {
-                    $lastMod = new \DateTime('@'.$lastMod);
-                    if ($lastMod <= $date) {
-                        $response->setStatus(304);
-                        $response->setHeader('Last-Modified', HTTP\toDate($lastMod));
-
-                        return false;
-                    }
-                }
-            }
-        }
-
-        if ($ifUnmodifiedSince = $request->getHeader('If-Unmodified-Since')) {
-            // The If-Unmodified-Since will allow allow the request if the
-            // entity has not changed since the specified date.
-            $date = HTTP\parseDate($ifUnmodifiedSince);
-
-            // We must only check the date if it's valid
-            if ($date) {
-                if (is_null($node)) {
-                    $node = $this->tree->getNodeForPath($path);
-                }
-                $lastMod = $node->getLastModified();
-                if ($lastMod) {
-                    $lastMod = new \DateTime('@'.$lastMod);
-                    if ($lastMod > $date) {
-                        throw new Exception\PreconditionFailed('An If-Unmodified-Since header was specified, but the entity has been changed since the specified date.', 'If-Unmodified-Since');
-                    }
-                }
-            }
-        }
-
-        // Now the hardest, the If: header. The If: header can contain multiple
-        // urls, ETags and so-called 'state tokens'.
-        //
-        // Examples of state tokens include lock-tokens (as defined in rfc4918)
-        // and sync-tokens (as defined in rfc6578).
-        //
-        // The only proper way to deal with these, is to emit events, that a
-        // Sync and Lock plugin can pick up.
-        $ifConditions = $this->getIfConditions($request);
-
-        foreach ($ifConditions as $kk => $ifCondition) {
-            foreach ($ifCondition['tokens'] as $ii => $token) {
-                $ifConditions[$kk]['tokens'][$ii]['validToken'] = false;
-            }
-        }
-
-        // Plugins are responsible for validating all the tokens.
-        // If a plugin deemed a token 'valid', it will set 'validToken' to
-        // true.
-        $this->emit('validateTokens', [$request, &$ifConditions]);
-
-        // Now we're going to analyze the result.
-
-        // Every ifCondition needs to validate to true, so we exit as soon as
-        // we have an invalid condition.
-        foreach ($ifConditions as $ifCondition) {
-            $uri = $ifCondition['uri'];
-            $tokens = $ifCondition['tokens'];
-
-            // We only need 1 valid token for the condition to succeed.
-            foreach ($tokens as $token) {
-                $tokenValid = $token['validToken'] || !$token['token'];
-
-                $etagValid = false;
-                if (!$token['etag']) {
-                    $etagValid = true;
-                }
-                // Checking the ETag, only if the token was already deemed
-                // valid and there is one.
-                if ($token['etag'] && $tokenValid) {
-                    // The token was valid, and there was an ETag. We must
-                    // grab the current ETag and check it.
-                    $node = $this->tree->getNodeForPath($uri);
-                    $etagValid = $node instanceof IFile && $node->getETag() == $token['etag'];
-                }
-
-                if (($tokenValid && $etagValid) ^ $token['negate']) {
-                    // Both were valid, so we can go to the next condition.
-                    continue 2;
-                }
-            }
-
-            // If we ended here, it means there was no valid ETag + token
-            // combination found for the current condition. This means we fail!
-            throw new Exception\PreconditionFailed('Failed to find a valid token/etag combination for '.$uri, 'If');
-        }
-
-        return true;
-    }
-
-    /**
-     * This method is created to extract information from the WebDAV HTTP 'If:' header.
-     *
-     * The If header can be quite complex, and has a bunch of features. We're using a regex to extract all relevant information
-     * The function will return an array, containing structs with the following keys
-     *
-     *   * uri   - the uri the condition applies to.
-     *   * tokens - The lock token. another 2 dimensional array containing 3 elements
-     *
-     * Example 1:
-     *
-     * If: (<opaquelocktoken:181d4fae-7d8c-11d0-a765-00a0c91e6bf2>)
-     *
-     * Would result in:
-     *
-     * [
-     *    [
-     *       'uri' => '/request/uri',
-     *       'tokens' => [
-     *          [
-     *              [
-     *                  'negate' => false,
-     *                  'token'  => 'opaquelocktoken:181d4fae-7d8c-11d0-a765-00a0c91e6bf2',
-     *                  'etag'   => ""
-     *              ]
-     *          ]
-     *       ],
-     *    ]
-     * ]
-     *
-     * Example 2:
-     *
-     * If: </path/> (Not <opaquelocktoken:181d4fae-7d8c-11d0-a765-00a0c91e6bf2> ["Im An ETag"]) (["Another ETag"]) </path2/> (Not ["Path2 ETag"])
-     *
-     * Would result in:
-     *
-     * [
-     *    [
-     *       'uri' => 'path',
-     *       'tokens' => [
-     *          [
-     *              [
-     *                  'negate' => true,
-     *                  'token'  => 'opaquelocktoken:181d4fae-7d8c-11d0-a765-00a0c91e6bf2',
-     *                  'etag'   => '"Im An ETag"'
-     *              ],
-     *              [
-     *                  'negate' => false,
-     *                  'token'  => '',
-     *                  'etag'   => '"Another ETag"'
-     *              ]
-     *          ]
-     *       ],
-     *    ],
-     *    [
-     *       'uri' => 'path2',
-     *       'tokens' => [
-     *          [
-     *              [
-     *                  'negate' => true,
-     *                  'token'  => '',
-     *                  'etag'   => '"Path2 ETag"'
-     *              ]
-     *          ]
-     *       ],
-     *    ],
-     * ]
-     *
-     * @return array
-     */
-    public function getIfConditions(RequestInterface $request)
-    {
-        $header = $request->getHeader('If');
-        if (!$header) {
-            return [];
-        }
-
-        $matches = [];
-
-        $regex = '/(?:\<(?P<uri>.*?)\>\s)?\((?P<not>Not\s)?(?:\<(?P<token>[^\>]*)\>)?(?:\s?)(?:\[(?P<etag>[^\]]*)\])?\)/im';
-        preg_match_all($regex, $header, $matches, PREG_SET_ORDER);
-
-        $conditions = [];
-
-        foreach ($matches as $match) {
-            // If there was no uri specified in this match, and there were
-            // already conditions parsed, we add the condition to the list of
-            // conditions for the previous uri.
-            if (!$match['uri'] && count($conditions)) {
-                $conditions[count($conditions) - 1]['tokens'][] = [
-                    'negate' => $match['not'] ? true : false,
-                    'token' => $match['token'],
-                    'etag' => isset($match['etag']) ? $match['etag'] : '',
-                ];
-            } else {
-                if (!$match['uri']) {
-                    $realUri = $request->getPath();
-                } else {
-                    $realUri = $this->calculateUri($match['uri']);
-                }
-
-                $conditions[] = [
-                    'uri' => $realUri,
-                    'tokens' => [
-                        [
-                            'negate' => $match['not'] ? true : false,
-                            'token' => $match['token'],
-                            'etag' => isset($match['etag']) ? $match['etag'] : '',
-                        ],
-                    ],
-                ];
-            }
-        }
-
-        return $conditions;
-    }
-
-    /**
-     * Returns an array with resourcetypes for a node.
-     *
-     * @return array
-     */
-    public function getResourceTypeForNode(INode $node)
-    {
-        $result = [];
-        foreach ($this->resourceTypeMapping as $className => $resourceType) {
-            if ($node instanceof $className) {
-                $result[] = $resourceType;
-            }
-        }
-
-        return $result;
-    }
-
-    // }}}
-    // {{{ XML Readers & Writers
-
-    /**
-     * Returns a callback generating a WebDAV propfind response body based on a list of nodes.
-     *
-     * If 'strip404s' is set to true, all 404 responses will be removed.
-     *
-     * @param array|\Traversable $fileProperties The list with nodes
-     * @param bool               $strip404s
-     *
-     * @return callable|string
-     */
-    public function generateMultiStatus($fileProperties, $strip404s = false)
-    {
-        $w = $this->xml->getWriter();
-        if (self::$streamMultiStatus) {
-            return function () use ($fileProperties, $strip404s, $w) {
-                $w->openUri('php://output');
-                $this->writeMultiStatus($w, $fileProperties, $strip404s);
-                $w->flush();
-            };
-        }
-        $w->openMemory();
-        $this->writeMultiStatus($w, $fileProperties, $strip404s);
-
-        return $w->outputMemory();
-    }
-
-    /**
-     * @param $fileProperties
-     */
-    private function writeMultiStatus(Writer $w, $fileProperties, bool $strip404s)
-    {
-        $w->contextUri = $this->baseUri;
-        $w->startDocument();
-
-        $w->startElement('{DAV:}multistatus');
-
-        foreach ($fileProperties as $entry) {
-            $href = $entry['href'];
-            unset($entry['href']);
-            if ($strip404s) {
-                unset($entry[404]);
-            }
-            $response = new Xml\Element\Response(
-                ltrim($href, '/'),
-                $entry
-            );
-            $w->write([
-                'name' => '{DAV:}response',
-                'value' => $response,
-            ]);
-        }
-        $w->endElement();
-        $w->endDocument();
-    }
+			if (count($mkCol->getResourceType()) > 1) {
+				throw new Exception\InvalidResourceType('The {DAV:}resourcetype you specified is not supported here.');
+			}
+
+			$parent->createDirectory($newName);
+		}
+
+		// If there are any properties that have not been handled/stored,
+		// we ask the 'propPatch' event to handle them. This will allow for
+		// example the propertyStorage system to store properties upon MKCOL.
+		if ($mkCol->getRemainingMutations()) {
+			$this->emit('propPatch', [$uri, $mkCol]);
+		}
+		$success = $mkCol->commit();
+
+		if (!$success) {
+			$result = $mkCol->getResult();
+
+			$formattedResult = [
+				'href' => $uri,
+			];
+
+			foreach ($result as $propertyName => $status) {
+				if (!isset($formattedResult[$status])) {
+					$formattedResult[$status] = [];
+				}
+				$formattedResult[$status][$propertyName] = null;
+			}
+
+			return $formattedResult;
+		}
+
+		$this->tree->markDirty($parentUri);
+		$this->emit('afterBind', [$uri]);
+		$this->emit('afterCreateCollection', [$uri]);
+	}
+
+	/**
+	 * This method updates a resource's properties.
+	 *
+	 * The properties array must be a list of properties. Array-keys are
+	 * property names in clarknotation, array-values are it's values.
+	 * If a property must be deleted, the value should be null.
+	 *
+	 * Note that this request should either completely succeed, or
+	 * completely fail.
+	 *
+	 * The response is an array with properties for keys, and http status codes
+	 * as their values.
+	 *
+	 * @param string $path
+	 *
+	 * @return array
+	 */
+	public function updateProperties($path, array $properties)
+	{
+		$propPatch = new PropPatch($properties);
+		$this->emit('propPatch', [$path, $propPatch]);
+		$propPatch->commit();
+
+		return $propPatch->getResult();
+	}
+
+	/**
+	 * This method checks the main HTTP preconditions.
+	 *
+	 * Currently these are:
+	 *   * If-Match
+	 *   * If-None-Match
+	 *   * If-Modified-Since
+	 *   * If-Unmodified-Since
+	 *
+	 * The method will return true if all preconditions are met
+	 * The method will return false, or throw an exception if preconditions
+	 * failed. If false is returned the operation should be aborted, and
+	 * the appropriate HTTP response headers are already set.
+	 *
+	 * Normally this method will throw 412 Precondition Failed for failures
+	 * related to If-None-Match, If-Match and If-Unmodified Since. It will
+	 * set the status to 304 Not Modified for If-Modified_since.
+	 *
+	 * @return bool
+	 */
+	public function checkPreconditions(RequestInterface $request, ResponseInterface $response)
+	{
+		$path = $request->getPath();
+		$node = null;
+		$lastMod = null;
+		$etag = null;
+
+		if ($ifMatch = $request->getHeader('If-Match')) {
+			// If-Match contains an entity tag. Only if the entity-tag
+			// matches we are allowed to make the request succeed.
+			// If the entity-tag is '*' we are only allowed to make the
+			// request succeed if a resource exists at that url.
+			try {
+				$node = $this->tree->getNodeForPath($path);
+			} catch (Exception\NotFound $e) {
+				throw new Exception\PreconditionFailed('An If-Match header was specified and the resource did not exist', 'If-Match');
+			}
+
+			// Only need to check entity tags if they are not *
+			if ('*' !== $ifMatch) {
+				// There can be multiple ETags
+				$ifMatch = explode(',', $ifMatch);
+				$haveMatch = false;
+				foreach ($ifMatch as $ifMatchItem) {
+					// Stripping any extra spaces
+					$ifMatchItem = trim($ifMatchItem, ' ');
+
+					$etag = $node instanceof IFile ? $node->getETag() : null;
+					if ($etag === $ifMatchItem) {
+						$haveMatch = true;
+					} else {
+						// Evolution has a bug where it sometimes prepends the "
+						// with a \. This is our workaround.
+						if (str_replace('\\"', '"', $ifMatchItem) === $etag) {
+							$haveMatch = true;
+						}
+					}
+				}
+				if (!$haveMatch) {
+					if ($etag) {
+						$response->setHeader('ETag', $etag);
+					}
+					throw new Exception\PreconditionFailed('An If-Match header was specified, but none of the specified ETags matched.', 'If-Match');
+				}
+			}
+		}
+
+		if ($ifNoneMatch = $request->getHeader('If-None-Match')) {
+			// The If-None-Match header contains an ETag.
+			// Only if the ETag does not match the current ETag, the request will succeed
+			// The header can also contain *, in which case the request
+			// will only succeed if the entity does not exist at all.
+			$nodeExists = true;
+			if (!$node) {
+				try {
+					$node = $this->tree->getNodeForPath($path);
+				} catch (Exception\NotFound $e) {
+					$nodeExists = false;
+				}
+			}
+			if ($nodeExists) {
+				$haveMatch = false;
+				if ('*' === $ifNoneMatch) {
+					$haveMatch = true;
+				} else {
+					// There might be multiple ETags
+					$ifNoneMatch = explode(',', $ifNoneMatch);
+					$etag = $node instanceof IFile ? $node->getETag() : null;
+
+					foreach ($ifNoneMatch as $ifNoneMatchItem) {
+						// Stripping any extra spaces
+						$ifNoneMatchItem = trim($ifNoneMatchItem, ' ');
+
+						if ($etag === $ifNoneMatchItem) {
+							$haveMatch = true;
+						}
+					}
+				}
+
+				if ($haveMatch) {
+					if ($etag) {
+						$response->setHeader('ETag', $etag);
+					}
+					if ('GET' === $request->getMethod()) {
+						$response->setStatus(304);
+
+						return false;
+					} else {
+						throw new Exception\PreconditionFailed('An If-None-Match header was specified, but the ETag matched (or * was specified).', 'If-None-Match');
+					}
+				}
+			}
+		}
+
+		if (!$ifNoneMatch && ($ifModifiedSince = $request->getHeader('If-Modified-Since'))) {
+			// The If-Modified-Since header contains a date. We
+			// will only return the entity if it has been changed since
+			// that date. If it hasn't been changed, we return a 304
+			// header
+			// Note that this header only has to be checked if there was no If-None-Match header
+			// as per the HTTP spec.
+			$date = HTTP\parseDate($ifModifiedSince);
+
+			if ($date) {
+				if (is_null($node)) {
+					$node = $this->tree->getNodeForPath($path);
+				}
+				$lastMod = $node->getLastModified();
+				if ($lastMod) {
+					$lastMod = new \DateTime('@'.$lastMod);
+					if ($lastMod <= $date) {
+						$response->setStatus(304);
+						$response->setHeader('Last-Modified', HTTP\toDate($lastMod));
+
+						return false;
+					}
+				}
+			}
+		}
+
+		if ($ifUnmodifiedSince = $request->getHeader('If-Unmodified-Since')) {
+			// The If-Unmodified-Since will allow allow the request if the
+			// entity has not changed since the specified date.
+			$date = HTTP\parseDate($ifUnmodifiedSince);
+
+			// We must only check the date if it's valid
+			if ($date) {
+				if (is_null($node)) {
+					$node = $this->tree->getNodeForPath($path);
+				}
+				$lastMod = $node->getLastModified();
+				if ($lastMod) {
+					$lastMod = new \DateTime('@'.$lastMod);
+					if ($lastMod > $date) {
+						throw new Exception\PreconditionFailed('An If-Unmodified-Since header was specified, but the entity has been changed since the specified date.', 'If-Unmodified-Since');
+					}
+				}
+			}
+		}
+
+		// Now the hardest, the If: header. The If: header can contain multiple
+		// urls, ETags and so-called 'state tokens'.
+		//
+		// Examples of state tokens include lock-tokens (as defined in rfc4918)
+		// and sync-tokens (as defined in rfc6578).
+		//
+		// The only proper way to deal with these, is to emit events, that a
+		// Sync and Lock plugin can pick up.
+		$ifConditions = $this->getIfConditions($request);
+
+		foreach ($ifConditions as $kk => $ifCondition) {
+			foreach ($ifCondition['tokens'] as $ii => $token) {
+				$ifConditions[$kk]['tokens'][$ii]['validToken'] = false;
+			}
+		}
+
+		// Plugins are responsible for validating all the tokens.
+		// If a plugin deemed a token 'valid', it will set 'validToken' to
+		// true.
+		$this->emit('validateTokens', [$request, &$ifConditions]);
+
+		// Now we're going to analyze the result.
+
+		// Every ifCondition needs to validate to true, so we exit as soon as
+		// we have an invalid condition.
+		foreach ($ifConditions as $ifCondition) {
+			$uri = $ifCondition['uri'];
+			$tokens = $ifCondition['tokens'];
+
+			// We only need 1 valid token for the condition to succeed.
+			foreach ($tokens as $token) {
+				$tokenValid = $token['validToken'] || !$token['token'];
+
+				$etagValid = false;
+				if (!$token['etag']) {
+					$etagValid = true;
+				}
+				// Checking the ETag, only if the token was already deemed
+				// valid and there is one.
+				if ($token['etag'] && $tokenValid) {
+					// The token was valid, and there was an ETag. We must
+					// grab the current ETag and check it.
+					$node = $this->tree->getNodeForPath($uri);
+					$etagValid = $node instanceof IFile && $node->getETag() == $token['etag'];
+				}
+
+				if (($tokenValid && $etagValid) ^ $token['negate']) {
+					// Both were valid, so we can go to the next condition.
+					continue 2;
+				}
+			}
+
+			// If we ended here, it means there was no valid ETag + token
+			// combination found for the current condition. This means we fail!
+			throw new Exception\PreconditionFailed('Failed to find a valid token/etag combination for '.$uri, 'If');
+		}
+
+		return true;
+	}
+
+	/**
+	 * This method is created to extract information from the WebDAV HTTP 'If:' header.
+	 *
+	 * The If header can be quite complex, and has a bunch of features. We're using a regex to extract all relevant information
+	 * The function will return an array, containing structs with the following keys
+	 *
+	 *   * uri   - the uri the condition applies to.
+	 *   * tokens - The lock token. another 2 dimensional array containing 3 elements
+	 *
+	 * Example 1:
+	 *
+	 * If: (<opaquelocktoken:181d4fae-7d8c-11d0-a765-00a0c91e6bf2>)
+	 *
+	 * Would result in:
+	 *
+	 * [
+	 *    [
+	 *       'uri' => '/request/uri',
+	 *       'tokens' => [
+	 *          [
+	 *              [
+	 *                  'negate' => false,
+	 *                  'token'  => 'opaquelocktoken:181d4fae-7d8c-11d0-a765-00a0c91e6bf2',
+	 *                  'etag'   => ""
+	 *              ]
+	 *          ]
+	 *       ],
+	 *    ]
+	 * ]
+	 *
+	 * Example 2:
+	 *
+	 * If: </path/> (Not <opaquelocktoken:181d4fae-7d8c-11d0-a765-00a0c91e6bf2> ["Im An ETag"]) (["Another ETag"]) </path2/> (Not ["Path2 ETag"])
+	 *
+	 * Would result in:
+	 *
+	 * [
+	 *    [
+	 *       'uri' => 'path',
+	 *       'tokens' => [
+	 *          [
+	 *              [
+	 *                  'negate' => true,
+	 *                  'token'  => 'opaquelocktoken:181d4fae-7d8c-11d0-a765-00a0c91e6bf2',
+	 *                  'etag'   => '"Im An ETag"'
+	 *              ],
+	 *              [
+	 *                  'negate' => false,
+	 *                  'token'  => '',
+	 *                  'etag'   => '"Another ETag"'
+	 *              ]
+	 *          ]
+	 *       ],
+	 *    ],
+	 *    [
+	 *       'uri' => 'path2',
+	 *       'tokens' => [
+	 *          [
+	 *              [
+	 *                  'negate' => true,
+	 *                  'token'  => '',
+	 *                  'etag'   => '"Path2 ETag"'
+	 *              ]
+	 *          ]
+	 *       ],
+	 *    ],
+	 * ]
+	 *
+	 * @return array
+	 */
+	public function getIfConditions(RequestInterface $request)
+	{
+		$header = $request->getHeader('If');
+		if (!$header) {
+			return [];
+		}
+
+		$matches = [];
+
+		$regex = '/(?:\<(?P<uri>.*?)\>\s)?\((?P<not>Not\s)?(?:\<(?P<token>[^\>]*)\>)?(?:\s?)(?:\[(?P<etag>[^\]]*)\])?\)/im';
+		preg_match_all($regex, $header, $matches, PREG_SET_ORDER);
+
+		$conditions = [];
+
+		foreach ($matches as $match) {
+			// If there was no uri specified in this match, and there were
+			// already conditions parsed, we add the condition to the list of
+			// conditions for the previous uri.
+			if (!$match['uri'] && count($conditions)) {
+				$conditions[count($conditions) - 1]['tokens'][] = [
+					'negate' => $match['not'] ? true : false,
+					'token' => $match['token'],
+					'etag' => isset($match['etag']) ? $match['etag'] : '',
+				];
+			} else {
+				if (!$match['uri']) {
+					$realUri = $request->getPath();
+				} else {
+					$realUri = $this->calculateUri($match['uri']);
+				}
+
+				$conditions[] = [
+					'uri' => $realUri,
+					'tokens' => [
+						[
+							'negate' => $match['not'] ? true : false,
+							'token' => $match['token'],
+							'etag' => isset($match['etag']) ? $match['etag'] : '',
+						],
+					],
+				];
+			}
+		}
+
+		return $conditions;
+	}
+
+	/**
+	 * Returns an array with resourcetypes for a node.
+	 *
+	 * @return array
+	 */
+	public function getResourceTypeForNode(INode $node)
+	{
+		$result = [];
+		foreach ($this->resourceTypeMapping as $className => $resourceType) {
+			if ($node instanceof $className) {
+				$result[] = $resourceType;
+			}
+		}
+
+		return $result;
+	}
+
+	// }}}
+	// {{{ XML Readers & Writers
+
+	/**
+	 * Returns a callback generating a WebDAV propfind response body based on a list of nodes.
+	 *
+	 * If 'strip404s' is set to true, all 404 responses will be removed.
+	 *
+	 * @param array|\Traversable $fileProperties The list with nodes
+	 * @param bool               $strip404s
+	 *
+	 * @return callable|string
+	 */
+	public function generateMultiStatus($fileProperties, $strip404s = false)
+	{
+		$w = $this->xml->getWriter();
+		if (self::$streamMultiStatus) {
+			return function () use ($fileProperties, $strip404s, $w) {
+				$w->openUri('php://output');
+				$this->writeMultiStatus($w, $fileProperties, $strip404s);
+				$w->flush();
+			};
+		}
+		$w->openMemory();
+		$this->writeMultiStatus($w, $fileProperties, $strip404s);
+
+		return $w->outputMemory();
+	}
+
+	/**
+	 * @param $fileProperties
+	 */
+	private function writeMultiStatus(Writer $w, $fileProperties, bool $strip404s)
+	{
+		$w->contextUri = $this->baseUri;
+		$w->startDocument();
+
+		$w->startElement('{DAV:}multistatus');
+
+		foreach ($fileProperties as $entry) {
+			$href = $entry['href'];
+			unset($entry['href']);
+			if ($strip404s) {
+				unset($entry[404]);
+			}
+			$response = new Xml\Element\Response(
+				ltrim($href, '/'),
+				$entry
+			);
+			$w->write([
+				'name' => '{DAV:}response',
+				'value' => $response,
+			]);
+		}
+		$w->endElement();
+		$w->endDocument();
+	}
 }

htdocs/includes/sabre/sabre/dav/lib/DAV/CorePlugin.php

Indentation +853 added lines, -853 removed lines

@@ -18,433 +18,433 @@ 
  */
 class CorePlugin extends ServerPlugin
 {
-    /**
-     * Reference to server object.
-     *
-     * @var Server
-     */
-    protected $server;
-
-    /**
-     * Sets up the plugin.
-     */
-    public function initialize(Server $server)
-    {
-        $this->server = $server;
-        $server->on('method:GET', [$this, 'httpGet']);
-        $server->on('method:OPTIONS', [$this, 'httpOptions']);
-        $server->on('method:HEAD', [$this, 'httpHead']);
-        $server->on('method:DELETE', [$this, 'httpDelete']);
-        $server->on('method:PROPFIND', [$this, 'httpPropFind']);
-        $server->on('method:PROPPATCH', [$this, 'httpPropPatch']);
-        $server->on('method:PUT', [$this, 'httpPut']);
-        $server->on('method:MKCOL', [$this, 'httpMkcol']);
-        $server->on('method:MOVE', [$this, 'httpMove']);
-        $server->on('method:COPY', [$this, 'httpCopy']);
-        $server->on('method:REPORT', [$this, 'httpReport']);
-
-        $server->on('propPatch', [$this, 'propPatchProtectedPropertyCheck'], 90);
-        $server->on('propPatch', [$this, 'propPatchNodeUpdate'], 200);
-        $server->on('propFind', [$this, 'propFind']);
-        $server->on('propFind', [$this, 'propFindNode'], 120);
-        $server->on('propFind', [$this, 'propFindLate'], 200);
-
-        $server->on('exception', [$this, 'exception']);
-    }
-
-    /**
-     * Returns a plugin name.
-     *
-     * Using this name other plugins will be able to access other plugins
-     * using DAV\Server::getPlugin
-     *
-     * @return string
-     */
-    public function getPluginName()
-    {
-        return 'core';
-    }
-
-    /**
-     * This is the default implementation for the GET method.
-     *
-     * @return bool
-     */
-    public function httpGet(RequestInterface $request, ResponseInterface $response)
-    {
-        $path = $request->getPath();
-        $node = $this->server->tree->getNodeForPath($path);
-
-        if (!$node instanceof IFile) {
-            return;
-        }
-
-        if ('HEAD' === $request->getHeader('X-Sabre-Original-Method')) {
-            $body = '';
-        } else {
-            $body = $node->get();
-
-            // Converting string into stream, if needed.
-            if (is_string($body)) {
-                $stream = fopen('php://temp', 'r+');
-                fwrite($stream, $body);
-                rewind($stream);
-                $body = $stream;
-            }
-        }
-
-        /*
+	/**
+	 * Reference to server object.
+	 *
+	 * @var Server
+	 */
+	protected $server;
+
+	/**
+	 * Sets up the plugin.
+	 */
+	public function initialize(Server $server)
+	{
+		$this->server = $server;
+		$server->on('method:GET', [$this, 'httpGet']);
+		$server->on('method:OPTIONS', [$this, 'httpOptions']);
+		$server->on('method:HEAD', [$this, 'httpHead']);
+		$server->on('method:DELETE', [$this, 'httpDelete']);
+		$server->on('method:PROPFIND', [$this, 'httpPropFind']);
+		$server->on('method:PROPPATCH', [$this, 'httpPropPatch']);
+		$server->on('method:PUT', [$this, 'httpPut']);
+		$server->on('method:MKCOL', [$this, 'httpMkcol']);
+		$server->on('method:MOVE', [$this, 'httpMove']);
+		$server->on('method:COPY', [$this, 'httpCopy']);
+		$server->on('method:REPORT', [$this, 'httpReport']);
+
+		$server->on('propPatch', [$this, 'propPatchProtectedPropertyCheck'], 90);
+		$server->on('propPatch', [$this, 'propPatchNodeUpdate'], 200);
+		$server->on('propFind', [$this, 'propFind']);
+		$server->on('propFind', [$this, 'propFindNode'], 120);
+		$server->on('propFind', [$this, 'propFindLate'], 200);
+
+		$server->on('exception', [$this, 'exception']);
+	}
+
+	/**
+	 * Returns a plugin name.
+	 *
+	 * Using this name other plugins will be able to access other plugins
+	 * using DAV\Server::getPlugin
+	 *
+	 * @return string
+	 */
+	public function getPluginName()
+	{
+		return 'core';
+	}
+
+	/**
+	 * This is the default implementation for the GET method.
+	 *
+	 * @return bool
+	 */
+	public function httpGet(RequestInterface $request, ResponseInterface $response)
+	{
+		$path = $request->getPath();
+		$node = $this->server->tree->getNodeForPath($path);
+
+		if (!$node instanceof IFile) {
+			return;
+		}
+
+		if ('HEAD' === $request->getHeader('X-Sabre-Original-Method')) {
+			$body = '';
+		} else {
+			$body = $node->get();
+
+			// Converting string into stream, if needed.
+			if (is_string($body)) {
+				$stream = fopen('php://temp', 'r+');
+				fwrite($stream, $body);
+				rewind($stream);
+				$body = $stream;
+			}
+		}
+
+		/*
          * TODO: getetag, getlastmodified, getsize should also be used using
          * this method
          */
-        $httpHeaders = $this->server->getHTTPHeaders($path);
+		$httpHeaders = $this->server->getHTTPHeaders($path);
 
-        /* ContentType needs to get a default, because many webservers will otherwise
+		/* ContentType needs to get a default, because many webservers will otherwise
          * default to text/html, and we don't want this for security reasons.
          */
-        if (!isset($httpHeaders['Content-Type'])) {
-            $httpHeaders['Content-Type'] = 'application/octet-stream';
-        }
-
-        if (isset($httpHeaders['Content-Length'])) {
-            $nodeSize = $httpHeaders['Content-Length'];
-
-            // Need to unset Content-Length, because we'll handle that during figuring out the range
-            unset($httpHeaders['Content-Length']);
-        } else {
-            $nodeSize = null;
-        }
-
-        $response->addHeaders($httpHeaders);
-
-        $range = $this->server->getHTTPRange();
-        $ifRange = $request->getHeader('If-Range');
-        $ignoreRangeHeader = false;
-
-        // If ifRange is set, and range is specified, we first need to check
-        // the precondition.
-        if ($nodeSize && $range && $ifRange) {
-            // if IfRange is parsable as a date we'll treat it as a DateTime
-            // otherwise, we must treat it as an etag.
-            try {
-                $ifRangeDate = new \DateTime($ifRange);
-
-                // It's a date. We must check if the entity is modified since
-                // the specified date.
-                if (!isset($httpHeaders['Last-Modified'])) {
-                    $ignoreRangeHeader = true;
-                } else {
-                    $modified = new \DateTime($httpHeaders['Last-Modified']);
-                    if ($modified > $ifRangeDate) {
-                        $ignoreRangeHeader = true;
-                    }
-                }
-            } catch (\Exception $e) {
-                // It's an entity. We can do a simple comparison.
-                if (!isset($httpHeaders['ETag'])) {
-                    $ignoreRangeHeader = true;
-                } elseif ($httpHeaders['ETag'] !== $ifRange) {
-                    $ignoreRangeHeader = true;
-                }
-            }
-        }
-
-        // We're only going to support HTTP ranges if the backend provided a filesize
-        if (!$ignoreRangeHeader && $nodeSize && $range) {
-            // Determining the exact byte offsets
-            if (!is_null($range[0])) {
-                $start = $range[0];
-                $end = $range[1] ? $range[1] : $nodeSize - 1;
-                if ($start >= $nodeSize) {
-                    throw new Exception\RequestedRangeNotSatisfiable('The start offset ('.$range[0].') exceeded the size of the entity ('.$nodeSize.')');
-                }
-                if ($end < $start) {
-                    throw new Exception\RequestedRangeNotSatisfiable('The end offset ('.$range[1].') is lower than the start offset ('.$range[0].')');
-                }
-                if ($end >= $nodeSize) {
-                    $end = $nodeSize - 1;
-                }
-            } else {
-                $start = $nodeSize - $range[1];
-                $end = $nodeSize - 1;
-
-                if ($start < 0) {
-                    $start = 0;
-                }
-            }
-
-            // Streams may advertise themselves as seekable, but still not
-            // actually allow fseek.  We'll manually go forward in the stream
-            // if fseek failed.
-            if (!stream_get_meta_data($body)['seekable'] || -1 === fseek($body, $start, SEEK_SET)) {
-                $consumeBlock = 8192;
-                for ($consumed = 0; $start - $consumed > 0;) {
-                    if (feof($body)) {
-                        throw new Exception\RequestedRangeNotSatisfiable('The start offset ('.$start.') exceeded the size of the entity ('.$consumed.')');
-                    }
-                    $consumed += strlen(fread($body, min($start - $consumed, $consumeBlock)));
-                }
-            }
-
-            $response->setHeader('Content-Length', $end - $start + 1);
-            $response->setHeader('Content-Range', 'bytes '.$start.'-'.$end.'/'.$nodeSize);
-            $response->setStatus(206);
-            $response->setBody($body);
-        } else {
-            if ($nodeSize) {
-                $response->setHeader('Content-Length', $nodeSize);
-            }
-            $response->setStatus(200);
-            $response->setBody($body);
-        }
-        // Sending back false will interrupt the event chain and tell the server
-        // we've handled this method.
-        return false;
-    }
-
-    /**
-     * HTTP OPTIONS.
-     *
-     * @return bool
-     */
-    public function httpOptions(RequestInterface $request, ResponseInterface $response)
-    {
-        $methods = $this->server->getAllowedMethods($request->getPath());
-
-        $response->setHeader('Allow', strtoupper(implode(', ', $methods)));
-        $features = ['1', '3', 'extended-mkcol'];
-
-        foreach ($this->server->getPlugins() as $plugin) {
-            $features = array_merge($features, $plugin->getFeatures());
-        }
-
-        $response->setHeader('DAV', implode(', ', $features));
-        $response->setHeader('MS-Author-Via', 'DAV');
-        $response->setHeader('Accept-Ranges', 'bytes');
-        $response->setHeader('Content-Length', '0');
-        $response->setStatus(200);
-
-        // Sending back false will interrupt the event chain and tell the server
-        // we've handled this method.
-        return false;
-    }
-
-    /**
-     * HTTP HEAD.
-     *
-     * This method is normally used to take a peak at a url, and only get the
-     * HTTP response headers, without the body. This is used by clients to
-     * determine if a remote file was changed, so they can use a local cached
-     * version, instead of downloading it again
-     *
-     * @return bool
-     */
-    public function httpHead(RequestInterface $request, ResponseInterface $response)
-    {
-        // This is implemented by changing the HEAD request to a GET request,
-        // and telling the request handler that is doesn't need to create the body.
-        $subRequest = clone $request;
-        $subRequest->setMethod('GET');
-        $subRequest->setHeader('X-Sabre-Original-Method', 'HEAD');
-
-        try {
-            $this->server->invokeMethod($subRequest, $response, false);
-        } catch (Exception\NotImplemented $e) {
-            // Some clients may do HEAD requests on collections, however, GET
-            // requests and HEAD requests _may_ not be defined on a collection,
-            // which would trigger a 501.
-            // This breaks some clients though, so we're transforming these
-            // 501s into 200s.
-            $response->setStatus(200);
-            $response->setBody('');
-            $response->setHeader('Content-Type', 'text/plain');
-            $response->setHeader('X-Sabre-Real-Status', $e->getHTTPCode());
-        }
-
-        // Sending back false will interrupt the event chain and tell the server
-        // we've handled this method.
-        return false;
-    }
-
-    /**
-     * HTTP Delete.
-     *
-     * The HTTP delete method, deletes a given uri
-     */
-    public function httpDelete(RequestInterface $request, ResponseInterface $response)
-    {
-        $path = $request->getPath();
-
-        if (!$this->server->emit('beforeUnbind', [$path])) {
-            return false;
-        }
-        $this->server->tree->delete($path);
-        $this->server->emit('afterUnbind', [$path]);
-
-        $response->setStatus(204);
-        $response->setHeader('Content-Length', '0');
-
-        // Sending back false will interrupt the event chain and tell the server
-        // we've handled this method.
-        return false;
-    }
-
-    /**
-     * WebDAV PROPFIND.
-     *
-     * This WebDAV method requests information about an uri resource, or a list of resources
-     * If a client wants to receive the properties for a single resource it will add an HTTP Depth: header with a 0 value
-     * If the value is 1, it means that it also expects a list of sub-resources (e.g.: files in a directory)
-     *
-     * The request body contains an XML data structure that has a list of properties the client understands
-     * The response body is also an xml document, containing information about every uri resource and the requested properties
-     *
-     * It has to return a HTTP 207 Multi-status status code
-     */
-    public function httpPropFind(RequestInterface $request, ResponseInterface $response)
-    {
-        $path = $request->getPath();
-
-        $requestBody = $request->getBodyAsString();
-        if (strlen($requestBody)) {
-            try {
-                $propFindXml = $this->server->xml->expect('{DAV:}propfind', $requestBody);
-            } catch (ParseException $e) {
-                throw new BadRequest($e->getMessage(), 0, $e);
-            }
-        } else {
-            $propFindXml = new Xml\Request\PropFind();
-            $propFindXml->allProp = true;
-            $propFindXml->properties = [];
-        }
-
-        $depth = $this->server->getHTTPDepth(1);
-        // The only two options for the depth of a propfind is 0 or 1 - as long as depth infinity is not enabled
-        if (!$this->server->enablePropfindDepthInfinity && 0 != $depth) {
-            $depth = 1;
-        }
-
-        $newProperties = $this->server->getPropertiesIteratorForPath($path, $propFindXml->properties, $depth);
-
-        // This is a multi-status response
-        $response->setStatus(207);
-        $response->setHeader('Content-Type', 'application/xml; charset=utf-8');
-        $response->setHeader('Vary', 'Brief,Prefer');
-
-        // Normally this header is only needed for OPTIONS responses, however..
-        // iCal seems to also depend on these being set for PROPFIND. Since
-        // this is not harmful, we'll add it.
-        $features = ['1', '3', 'extended-mkcol'];
-        foreach ($this->server->getPlugins() as $plugin) {
-            $features = array_merge($features, $plugin->getFeatures());
-        }
-        $response->setHeader('DAV', implode(', ', $features));
-
-        $prefer = $this->server->getHTTPPrefer();
-        $minimal = 'minimal' === $prefer['return'];
-
-        $data = $this->server->generateMultiStatus($newProperties, $minimal);
-        $response->setBody($data);
-
-        // Sending back false will interrupt the event chain and tell the server
-        // we've handled this method.
-        return false;
-    }
-
-    /**
-     * WebDAV PROPPATCH.
-     *
-     * This method is called to update properties on a Node. The request is an XML body with all the mutations.
-     * In this XML body it is specified which properties should be set/updated and/or deleted
-     *
-     * @return bool
-     */
-    public function httpPropPatch(RequestInterface $request, ResponseInterface $response)
-    {
-        $path = $request->getPath();
-
-        try {
-            $propPatch = $this->server->xml->expect('{DAV:}propertyupdate', $request->getBody());
-        } catch (ParseException $e) {
-            throw new BadRequest($e->getMessage(), 0, $e);
-        }
-        $newProperties = $propPatch->properties;
-
-        $result = $this->server->updateProperties($path, $newProperties);
-
-        $prefer = $this->server->getHTTPPrefer();
-        $response->setHeader('Vary', 'Brief,Prefer');
-
-        if ('minimal' === $prefer['return']) {
-            // If return-minimal is specified, we only have to check if the
-            // request was successful, and don't need to return the
-            // multi-status.
-            $ok = true;
-            foreach ($result as $prop => $code) {
-                if ((int) $code > 299) {
-                    $ok = false;
-                }
-            }
-
-            if ($ok) {
-                $response->setStatus(204);
-
-                return false;
-            }
-        }
-
-        $response->setStatus(207);
-        $response->setHeader('Content-Type', 'application/xml; charset=utf-8');
-
-        // Reorganizing the result for generateMultiStatus
-        $multiStatus = [];
-        foreach ($result as $propertyName => $code) {
-            if (isset($multiStatus[$code])) {
-                $multiStatus[$code][$propertyName] = null;
-            } else {
-                $multiStatus[$code] = [$propertyName => null];
-            }
-        }
-        $multiStatus['href'] = $path;
-
-        $response->setBody(
-            $this->server->generateMultiStatus([$multiStatus])
-        );
-
-        // Sending back false will interrupt the event chain and tell the server
-        // we've handled this method.
-        return false;
-    }
-
-    /**
-     * HTTP PUT method.
-     *
-     * This HTTP method updates a file, or creates a new one.
-     *
-     * If a new resource was created, a 201 Created status code should be returned. If an existing resource is updated, it's a 204 No Content
-     *
-     * @return bool
-     */
-    public function httpPut(RequestInterface $request, ResponseInterface $response)
-    {
-        $body = $request->getBodyAsStream();
-        $path = $request->getPath();
-
-        // Intercepting Content-Range
-        if ($request->getHeader('Content-Range')) {
-            /*
+		if (!isset($httpHeaders['Content-Type'])) {
+			$httpHeaders['Content-Type'] = 'application/octet-stream';
+		}
+
+		if (isset($httpHeaders['Content-Length'])) {
+			$nodeSize = $httpHeaders['Content-Length'];
+
+			// Need to unset Content-Length, because we'll handle that during figuring out the range
+			unset($httpHeaders['Content-Length']);
+		} else {
+			$nodeSize = null;
+		}
+
+		$response->addHeaders($httpHeaders);
+
+		$range = $this->server->getHTTPRange();
+		$ifRange = $request->getHeader('If-Range');
+		$ignoreRangeHeader = false;
+
+		// If ifRange is set, and range is specified, we first need to check
+		// the precondition.
+		if ($nodeSize && $range && $ifRange) {
+			// if IfRange is parsable as a date we'll treat it as a DateTime
+			// otherwise, we must treat it as an etag.
+			try {
+				$ifRangeDate = new \DateTime($ifRange);
+
+				// It's a date. We must check if the entity is modified since
+				// the specified date.
+				if (!isset($httpHeaders['Last-Modified'])) {
+					$ignoreRangeHeader = true;
+				} else {
+					$modified = new \DateTime($httpHeaders['Last-Modified']);
+					if ($modified > $ifRangeDate) {
+						$ignoreRangeHeader = true;
+					}
+				}
+			} catch (\Exception $e) {
+				// It's an entity. We can do a simple comparison.
+				if (!isset($httpHeaders['ETag'])) {
+					$ignoreRangeHeader = true;
+				} elseif ($httpHeaders['ETag'] !== $ifRange) {
+					$ignoreRangeHeader = true;
+				}
+			}
+		}
+
+		// We're only going to support HTTP ranges if the backend provided a filesize
+		if (!$ignoreRangeHeader && $nodeSize && $range) {
+			// Determining the exact byte offsets
+			if (!is_null($range[0])) {
+				$start = $range[0];
+				$end = $range[1] ? $range[1] : $nodeSize - 1;
+				if ($start >= $nodeSize) {
+					throw new Exception\RequestedRangeNotSatisfiable('The start offset ('.$range[0].') exceeded the size of the entity ('.$nodeSize.')');
+				}
+				if ($end < $start) {
+					throw new Exception\RequestedRangeNotSatisfiable('The end offset ('.$range[1].') is lower than the start offset ('.$range[0].')');
+				}
+				if ($end >= $nodeSize) {
+					$end = $nodeSize - 1;
+				}
+			} else {
+				$start = $nodeSize - $range[1];
+				$end = $nodeSize - 1;
+
+				if ($start < 0) {
+					$start = 0;
+				}
+			}
+
+			// Streams may advertise themselves as seekable, but still not
+			// actually allow fseek.  We'll manually go forward in the stream
+			// if fseek failed.
+			if (!stream_get_meta_data($body)['seekable'] || -1 === fseek($body, $start, SEEK_SET)) {
+				$consumeBlock = 8192;
+				for ($consumed = 0; $start - $consumed > 0;) {
+					if (feof($body)) {
+						throw new Exception\RequestedRangeNotSatisfiable('The start offset ('.$start.') exceeded the size of the entity ('.$consumed.')');
+					}
+					$consumed += strlen(fread($body, min($start - $consumed, $consumeBlock)));
+				}
+			}
+
+			$response->setHeader('Content-Length', $end - $start + 1);
+			$response->setHeader('Content-Range', 'bytes '.$start.'-'.$end.'/'.$nodeSize);
+			$response->setStatus(206);
+			$response->setBody($body);
+		} else {
+			if ($nodeSize) {
+				$response->setHeader('Content-Length', $nodeSize);
+			}
+			$response->setStatus(200);
+			$response->setBody($body);
+		}
+		// Sending back false will interrupt the event chain and tell the server
+		// we've handled this method.
+		return false;
+	}
+
+	/**
+	 * HTTP OPTIONS.
+	 *
+	 * @return bool
+	 */
+	public function httpOptions(RequestInterface $request, ResponseInterface $response)
+	{
+		$methods = $this->server->getAllowedMethods($request->getPath());
+
+		$response->setHeader('Allow', strtoupper(implode(', ', $methods)));
+		$features = ['1', '3', 'extended-mkcol'];
+
+		foreach ($this->server->getPlugins() as $plugin) {
+			$features = array_merge($features, $plugin->getFeatures());
+		}
+
+		$response->setHeader('DAV', implode(', ', $features));
+		$response->setHeader('MS-Author-Via', 'DAV');
+		$response->setHeader('Accept-Ranges', 'bytes');
+		$response->setHeader('Content-Length', '0');
+		$response->setStatus(200);
+
+		// Sending back false will interrupt the event chain and tell the server
+		// we've handled this method.
+		return false;
+	}
+
+	/**
+	 * HTTP HEAD.
+	 *
+	 * This method is normally used to take a peak at a url, and only get the
+	 * HTTP response headers, without the body. This is used by clients to
+	 * determine if a remote file was changed, so they can use a local cached
+	 * version, instead of downloading it again
+	 *
+	 * @return bool
+	 */
+	public function httpHead(RequestInterface $request, ResponseInterface $response)
+	{
+		// This is implemented by changing the HEAD request to a GET request,
+		// and telling the request handler that is doesn't need to create the body.
+		$subRequest = clone $request;
+		$subRequest->setMethod('GET');
+		$subRequest->setHeader('X-Sabre-Original-Method', 'HEAD');
+
+		try {
+			$this->server->invokeMethod($subRequest, $response, false);
+		} catch (Exception\NotImplemented $e) {
+			// Some clients may do HEAD requests on collections, however, GET
+			// requests and HEAD requests _may_ not be defined on a collection,
+			// which would trigger a 501.
+			// This breaks some clients though, so we're transforming these
+			// 501s into 200s.
+			$response->setStatus(200);
+			$response->setBody('');
+			$response->setHeader('Content-Type', 'text/plain');
+			$response->setHeader('X-Sabre-Real-Status', $e->getHTTPCode());
+		}
+
+		// Sending back false will interrupt the event chain and tell the server
+		// we've handled this method.
+		return false;
+	}
+
+	/**
+	 * HTTP Delete.
+	 *
+	 * The HTTP delete method, deletes a given uri
+	 */
+	public function httpDelete(RequestInterface $request, ResponseInterface $response)
+	{
+		$path = $request->getPath();
+
+		if (!$this->server->emit('beforeUnbind', [$path])) {
+			return false;
+		}
+		$this->server->tree->delete($path);
+		$this->server->emit('afterUnbind', [$path]);
+
+		$response->setStatus(204);
+		$response->setHeader('Content-Length', '0');
+
+		// Sending back false will interrupt the event chain and tell the server
+		// we've handled this method.
+		return false;
+	}
+
+	/**
+	 * WebDAV PROPFIND.
+	 *
+	 * This WebDAV method requests information about an uri resource, or a list of resources
+	 * If a client wants to receive the properties for a single resource it will add an HTTP Depth: header with a 0 value
+	 * If the value is 1, it means that it also expects a list of sub-resources (e.g.: files in a directory)
+	 *
+	 * The request body contains an XML data structure that has a list of properties the client understands
+	 * The response body is also an xml document, containing information about every uri resource and the requested properties
+	 *
+	 * It has to return a HTTP 207 Multi-status status code
+	 */
+	public function httpPropFind(RequestInterface $request, ResponseInterface $response)
+	{
+		$path = $request->getPath();
+
+		$requestBody = $request->getBodyAsString();
+		if (strlen($requestBody)) {
+			try {
+				$propFindXml = $this->server->xml->expect('{DAV:}propfind', $requestBody);
+			} catch (ParseException $e) {
+				throw new BadRequest($e->getMessage(), 0, $e);
+			}
+		} else {
+			$propFindXml = new Xml\Request\PropFind();
+			$propFindXml->allProp = true;
+			$propFindXml->properties = [];
+		}
+
+		$depth = $this->server->getHTTPDepth(1);
+		// The only two options for the depth of a propfind is 0 or 1 - as long as depth infinity is not enabled
+		if (!$this->server->enablePropfindDepthInfinity && 0 != $depth) {
+			$depth = 1;
+		}
+
+		$newProperties = $this->server->getPropertiesIteratorForPath($path, $propFindXml->properties, $depth);
+
+		// This is a multi-status response
+		$response->setStatus(207);
+		$response->setHeader('Content-Type', 'application/xml; charset=utf-8');
+		$response->setHeader('Vary', 'Brief,Prefer');
+
+		// Normally this header is only needed for OPTIONS responses, however..
+		// iCal seems to also depend on these being set for PROPFIND. Since
+		// this is not harmful, we'll add it.
+		$features = ['1', '3', 'extended-mkcol'];
+		foreach ($this->server->getPlugins() as $plugin) {
+			$features = array_merge($features, $plugin->getFeatures());
+		}
+		$response->setHeader('DAV', implode(', ', $features));
+
+		$prefer = $this->server->getHTTPPrefer();
+		$minimal = 'minimal' === $prefer['return'];
+
+		$data = $this->server->generateMultiStatus($newProperties, $minimal);
+		$response->setBody($data);
+
+		// Sending back false will interrupt the event chain and tell the server
+		// we've handled this method.
+		return false;
+	}
+
+	/**
+	 * WebDAV PROPPATCH.
+	 *
+	 * This method is called to update properties on a Node. The request is an XML body with all the mutations.
+	 * In this XML body it is specified which properties should be set/updated and/or deleted
+	 *
+	 * @return bool
+	 */
+	public function httpPropPatch(RequestInterface $request, ResponseInterface $response)
+	{
+		$path = $request->getPath();
+
+		try {
+			$propPatch = $this->server->xml->expect('{DAV:}propertyupdate', $request->getBody());
+		} catch (ParseException $e) {
+			throw new BadRequest($e->getMessage(), 0, $e);
+		}
+		$newProperties = $propPatch->properties;
+
+		$result = $this->server->updateProperties($path, $newProperties);
+
+		$prefer = $this->server->getHTTPPrefer();
+		$response->setHeader('Vary', 'Brief,Prefer');
+
+		if ('minimal' === $prefer['return']) {
+			// If return-minimal is specified, we only have to check if the
+			// request was successful, and don't need to return the
+			// multi-status.
+			$ok = true;
+			foreach ($result as $prop => $code) {
+				if ((int) $code > 299) {
+					$ok = false;
+				}
+			}
+
+			if ($ok) {
+				$response->setStatus(204);
+
+				return false;
+			}
+		}
+
+		$response->setStatus(207);
+		$response->setHeader('Content-Type', 'application/xml; charset=utf-8');
+
+		// Reorganizing the result for generateMultiStatus
+		$multiStatus = [];
+		foreach ($result as $propertyName => $code) {
+			if (isset($multiStatus[$code])) {
+				$multiStatus[$code][$propertyName] = null;
+			} else {
+				$multiStatus[$code] = [$propertyName => null];
+			}
+		}
+		$multiStatus['href'] = $path;
+
+		$response->setBody(
+			$this->server->generateMultiStatus([$multiStatus])
+		);
+
+		// Sending back false will interrupt the event chain and tell the server
+		// we've handled this method.
+		return false;
+	}
+
+	/**
+	 * HTTP PUT method.
+	 *
+	 * This HTTP method updates a file, or creates a new one.
+	 *
+	 * If a new resource was created, a 201 Created status code should be returned. If an existing resource is updated, it's a 204 No Content
+	 *
+	 * @return bool
+	 */
+	public function httpPut(RequestInterface $request, ResponseInterface $response)
+	{
+		$body = $request->getBodyAsStream();
+		$path = $request->getPath();
+
+		// Intercepting Content-Range
+		if ($request->getHeader('Content-Range')) {
+			/*
                An origin server that allows PUT on a given target resource MUST send
                a 400 (Bad Request) response to a PUT request that contains a
                Content-Range header field.
 
                Reference: http://tools.ietf.org/html/rfc7231#section-4.3.4
             */
-            throw new Exception\BadRequest('Content-Range on PUT requests are forbidden.');
-        }
+			throw new Exception\BadRequest('Content-Range on PUT requests are forbidden.');
+		}
 
-        // Intercepting the Finder problem
-        if (($expected = $request->getHeader('X-Expected-Entity-Length')) && $expected > 0) {
-            /*
+		// Intercepting the Finder problem
+		if (($expected = $request->getHeader('X-Expected-Entity-Length')) && $expected > 0) {
+			/*
             Many webservers will not cooperate well with Finder PUT requests,
             because it uses 'Chunked' transfer encoding for the request body.
 
@@ -465,443 +465,443 @@ 
             protect the end-user.
             */
 
-            // Only reading first byte
-            $firstByte = fread($body, 1);
-            if (1 !== strlen($firstByte)) {
-                throw new Exception\Forbidden('This server is not compatible with OS/X finder. Consider using a different WebDAV client or webserver.');
-            }
-
-            // The body needs to stay intact, so we copy everything to a
-            // temporary stream.
-
-            $newBody = fopen('php://temp', 'r+');
-            fwrite($newBody, $firstByte);
-            stream_copy_to_stream($body, $newBody);
-            rewind($newBody);
-
-            $body = $newBody;
-        }
-
-        if ($this->server->tree->nodeExists($path)) {
-            $node = $this->server->tree->getNodeForPath($path);
-
-            // If the node is a collection, we'll deny it
-            if (!($node instanceof IFile)) {
-                throw new Exception\Conflict('PUT is not allowed on non-files.');
-            }
-            if (!$this->server->updateFile($path, $body, $etag)) {
-                return false;
-            }
-
-            $response->setHeader('Content-Length', '0');
-            if ($etag) {
-                $response->setHeader('ETag', $etag);
-            }
-            $response->setStatus(204);
-        } else {
-            $etag = null;
-            // If we got here, the resource didn't exist yet.
-            if (!$this->server->createFile($path, $body, $etag)) {
-                // For one reason or another the file was not created.
-                return false;
-            }
-
-            $response->setHeader('Content-Length', '0');
-            if ($etag) {
-                $response->setHeader('ETag', $etag);
-            }
-            $response->setStatus(201);
-        }
-
-        // Sending back false will interrupt the event chain and tell the server
-        // we've handled this method.
-        return false;
-    }
-
-    /**
-     * WebDAV MKCOL.
-     *
-     * The MKCOL method is used to create a new collection (directory) on the server
-     *
-     * @return bool
-     */
-    public function httpMkcol(RequestInterface $request, ResponseInterface $response)
-    {
-        $requestBody = $request->getBodyAsString();
-        $path = $request->getPath();
-
-        if ($requestBody) {
-            $contentType = $request->getHeader('Content-Type');
-            if (null === $contentType || (0 !== strpos($contentType, 'application/xml') && 0 !== strpos($contentType, 'text/xml'))) {
-                // We must throw 415 for unsupported mkcol bodies
-                throw new Exception\UnsupportedMediaType('The request body for the MKCOL request must have an xml Content-Type');
-            }
-
-            try {
-                $mkcol = $this->server->xml->expect('{DAV:}mkcol', $requestBody);
-            } catch (\Sabre\Xml\ParseException $e) {
-                throw new Exception\BadRequest($e->getMessage(), 0, $e);
-            }
-
-            $properties = $mkcol->getProperties();
-
-            if (!isset($properties['{DAV:}resourcetype'])) {
-                throw new Exception\BadRequest('The mkcol request must include a {DAV:}resourcetype property');
-            }
-            $resourceType = $properties['{DAV:}resourcetype']->getValue();
-            unset($properties['{DAV:}resourcetype']);
-        } else {
-            $properties = [];
-            $resourceType = ['{DAV:}collection'];
-        }
-
-        $mkcol = new MkCol($resourceType, $properties);
-
-        $result = $this->server->createCollection($path, $mkcol);
-
-        if (is_array($result)) {
-            $response->setStatus(207);
-            $response->setHeader('Content-Type', 'application/xml; charset=utf-8');
-
-            $response->setBody(
-                $this->server->generateMultiStatus([$result])
-            );
-        } else {
-            $response->setHeader('Content-Length', '0');
-            $response->setStatus(201);
-        }
-
-        // Sending back false will interrupt the event chain and tell the server
-        // we've handled this method.
-        return false;
-    }
-
-    /**
-     * WebDAV HTTP MOVE method.
-     *
-     * This method moves one uri to a different uri. A lot of the actual request processing is done in getCopyMoveInfo
-     *
-     * @return bool
-     */
-    public function httpMove(RequestInterface $request, ResponseInterface $response)
-    {
-        $path = $request->getPath();
-
-        $moveInfo = $this->server->getCopyAndMoveInfo($request);
-
-        if ($moveInfo['destinationExists']) {
-            if (!$this->server->emit('beforeUnbind', [$moveInfo['destination']])) {
-                return false;
-            }
-        }
-        if (!$this->server->emit('beforeUnbind', [$path])) {
-            return false;
-        }
-        if (!$this->server->emit('beforeBind', [$moveInfo['destination']])) {
-            return false;
-        }
-        if (!$this->server->emit('beforeMove', [$path, $moveInfo['destination']])) {
-            return false;
-        }
-
-        if ($moveInfo['destinationExists']) {
-            $this->server->tree->delete($moveInfo['destination']);
-            $this->server->emit('afterUnbind', [$moveInfo['destination']]);
-        }
-
-        $this->server->tree->move($path, $moveInfo['destination']);
-
-        // Its important afterMove is called before afterUnbind, because it
-        // allows systems to transfer data from one path to another.
-        // PropertyStorage uses this. If afterUnbind was first, it would clean
-        // up all the properties before it has a chance.
-        $this->server->emit('afterMove', [$path, $moveInfo['destination']]);
-        $this->server->emit('afterUnbind', [$path]);
-        $this->server->emit('afterBind', [$moveInfo['destination']]);
-
-        // If a resource was overwritten we should send a 204, otherwise a 201
-        $response->setHeader('Content-Length', '0');
-        $response->setStatus($moveInfo['destinationExists'] ? 204 : 201);
-
-        // Sending back false will interrupt the event chain and tell the server
-        // we've handled this method.
-        return false;
-    }
-
-    /**
-     * WebDAV HTTP COPY method.
-     *
-     * This method copies one uri to a different uri, and works much like the MOVE request
-     * A lot of the actual request processing is done in getCopyMoveInfo
-     *
-     * @return bool
-     */
-    public function httpCopy(RequestInterface $request, ResponseInterface $response)
-    {
-        $path = $request->getPath();
-
-        $copyInfo = $this->server->getCopyAndMoveInfo($request);
-
-        if (!$this->server->emit('beforeBind', [$copyInfo['destination']])) {
-            return false;
-        }
-        if (!$this->server->emit('beforeCopy', [$path, $copyInfo['destination']])) {
-            return false;
-        }
-
-        if ($copyInfo['destinationExists']) {
-            if (!$this->server->emit('beforeUnbind', [$copyInfo['destination']])) {
-                return false;
-            }
-            $this->server->tree->delete($copyInfo['destination']);
-        }
-
-        $this->server->tree->copy($path, $copyInfo['destination']);
-        $this->server->emit('afterCopy', [$path, $copyInfo['destination']]);
-        $this->server->emit('afterBind', [$copyInfo['destination']]);
-
-        // If a resource was overwritten we should send a 204, otherwise a 201
-        $response->setHeader('Content-Length', '0');
-        $response->setStatus($copyInfo['destinationExists'] ? 204 : 201);
-
-        // Sending back false will interrupt the event chain and tell the server
-        // we've handled this method.
-        return false;
-    }
-
-    /**
-     * HTTP REPORT method implementation.
-     *
-     * Although the REPORT method is not part of the standard WebDAV spec (it's from rfc3253)
-     * It's used in a lot of extensions, so it made sense to implement it into the core.
-     *
-     * @return bool
-     */
-    public function httpReport(RequestInterface $request, ResponseInterface $response)
-    {
-        $path = $request->getPath();
-
-        $result = $this->server->xml->parse(
-            $request->getBody(),
-            $request->getUrl(),
-            $rootElementName
-        );
-
-        if ($this->server->emit('report', [$rootElementName, $result, $path])) {
-            // If emit returned true, it means the report was not supported
-            throw new Exception\ReportNotSupported();
-        }
-
-        // Sending back false will interrupt the event chain and tell the server
-        // we've handled this method.
-        return false;
-    }
-
-    /**
-     * This method is called during property updates.
-     *
-     * Here we check if a user attempted to update a protected property and
-     * ensure that the process fails if this is the case.
-     *
-     * @param string $path
-     */
-    public function propPatchProtectedPropertyCheck($path, PropPatch $propPatch)
-    {
-        // Comparing the mutation list to the list of protected properties.
-        $mutations = $propPatch->getMutations();
-
-        $protected = array_intersect(
-            $this->server->protectedProperties,
-            array_keys($mutations)
-        );
-
-        if ($protected) {
-            $propPatch->setResultCode($protected, 403);
-        }
-    }
-
-    /**
-     * This method is called during property updates.
-     *
-     * Here we check if a node implements IProperties and let the node handle
-     * updating of (some) properties.
-     *
-     * @param string $path
-     */
-    public function propPatchNodeUpdate($path, PropPatch $propPatch)
-    {
-        // This should trigger a 404 if the node doesn't exist.
-        $node = $this->server->tree->getNodeForPath($path);
-
-        if ($node instanceof IProperties) {
-            $node->propPatch($propPatch);
-        }
-    }
-
-    /**
-     * This method is called when properties are retrieved.
-     *
-     * Here we add all the default properties.
-     */
-    public function propFind(PropFind $propFind, INode $node)
-    {
-        $propFind->handle('{DAV:}getlastmodified', function () use ($node) {
-            $lm = $node->getLastModified();
-            if ($lm) {
-                return new Xml\Property\GetLastModified($lm);
-            }
-        });
-
-        if ($node instanceof IFile) {
-            $propFind->handle('{DAV:}getcontentlength', [$node, 'getSize']);
-            $propFind->handle('{DAV:}getetag', [$node, 'getETag']);
-            $propFind->handle('{DAV:}getcontenttype', [$node, 'getContentType']);
-        }
-
-        if ($node instanceof IQuota) {
-            $quotaInfo = null;
-            $propFind->handle('{DAV:}quota-used-bytes', function () use (&$quotaInfo, $node) {
-                $quotaInfo = $node->getQuotaInfo();
-
-                return $quotaInfo[0];
-            });
-            $propFind->handle('{DAV:}quota-available-bytes', function () use (&$quotaInfo, $node) {
-                if (!$quotaInfo) {
-                    $quotaInfo = $node->getQuotaInfo();
-                }
-
-                return $quotaInfo[1];
-            });
-        }
-
-        $propFind->handle('{DAV:}supported-report-set', function () use ($propFind) {
-            $reports = [];
-            foreach ($this->server->getPlugins() as $plugin) {
-                $reports = array_merge($reports, $plugin->getSupportedReportSet($propFind->getPath()));
-            }
-
-            return new Xml\Property\SupportedReportSet($reports);
-        });
-        $propFind->handle('{DAV:}resourcetype', function () use ($node) {
-            return new Xml\Property\ResourceType($this->server->getResourceTypeForNode($node));
-        });
-        $propFind->handle('{DAV:}supported-method-set', function () use ($propFind) {
-            return new Xml\Property\SupportedMethodSet(
-                $this->server->getAllowedMethods($propFind->getPath())
-            );
-        });
-    }
-
-    /**
-     * Fetches properties for a node.
-     *
-     * This event is called a bit later, so plugins have a chance first to
-     * populate the result.
-     */
-    public function propFindNode(PropFind $propFind, INode $node)
-    {
-        if ($node instanceof IProperties && $propertyNames = $propFind->get404Properties()) {
-            $nodeProperties = $node->getProperties($propertyNames);
-            foreach ($nodeProperties as $propertyName => $propertyValue) {
-                $propFind->set($propertyName, $propertyValue, 200);
-            }
-        }
-    }
-
-    /**
-     * This method is called when properties are retrieved.
-     *
-     * This specific handler is called very late in the process, because we
-     * want other systems to first have a chance to handle the properties.
-     */
-    public function propFindLate(PropFind $propFind, INode $node)
-    {
-        $propFind->handle('{http://calendarserver.org/ns/}getctag', function () use ($propFind) {
-            // If we already have a sync-token from the current propFind
-            // request, we can re-use that.
-            $val = $propFind->get('{http://sabredav.org/ns}sync-token');
-            if ($val) {
-                return $val;
-            }
-
-            $val = $propFind->get('{DAV:}sync-token');
-            if ($val && is_scalar($val)) {
-                return $val;
-            }
-            if ($val && $val instanceof Xml\Property\Href) {
-                return substr($val->getHref(), strlen(Sync\Plugin::SYNCTOKEN_PREFIX));
-            }
-
-            // If we got here, the earlier two properties may simply not have
-            // been part of the earlier request. We're going to fetch them.
-            $result = $this->server->getProperties($propFind->getPath(), [
-                '{http://sabredav.org/ns}sync-token',
-                '{DAV:}sync-token',
-            ]);
-
-            if (isset($result['{http://sabredav.org/ns}sync-token'])) {
-                return $result['{http://sabredav.org/ns}sync-token'];
-            }
-            if (isset($result['{DAV:}sync-token'])) {
-                $val = $result['{DAV:}sync-token'];
-                if (is_scalar($val)) {
-                    return $val;
-                } elseif ($val instanceof Xml\Property\Href) {
-                    return substr($val->getHref(), strlen(Sync\Plugin::SYNCTOKEN_PREFIX));
-                }
-            }
-        });
-    }
-
-    /**
-     * Listens for exception events, and automatically logs them.
-     *
-     * @param Exception $e
-     */
-    public function exception($e)
-    {
-        $logLevel = \Psr\Log\LogLevel::CRITICAL;
-        if ($e instanceof \Sabre\DAV\Exception) {
-            // If it's a standard sabre/dav exception, it means we have a http
-            // status code available.
-            $code = $e->getHTTPCode();
-
-            if ($code >= 400 && $code < 500) {
-                // user error
-                $logLevel = \Psr\Log\LogLevel::INFO;
-            } else {
-                // Server-side error. We mark it's as an error, but it's not
-                // critical.
-                $logLevel = \Psr\Log\LogLevel::ERROR;
-            }
-        }
-
-        $this->server->getLogger()->log(
-            $logLevel,
-            'Uncaught exception',
-            [
-                'exception' => $e,
-            ]
-        );
-    }
-
-    /**
-     * Returns a bunch of meta-data about the plugin.
-     *
-     * Providing this information is optional, and is mainly displayed by the
-     * Browser plugin.
-     *
-     * The description key in the returned array may contain html and will not
-     * be sanitized.
-     *
-     * @return array
-     */
-    public function getPluginInfo()
-    {
-        return [
-            'name' => $this->getPluginName(),
-            'description' => 'The Core plugin provides a lot of the basic functionality required by WebDAV, such as a default implementation for all HTTP and WebDAV methods.',
-            'link' => null,
-        ];
-    }
+			// Only reading first byte
+			$firstByte = fread($body, 1);
+			if (1 !== strlen($firstByte)) {
+				throw new Exception\Forbidden('This server is not compatible with OS/X finder. Consider using a different WebDAV client or webserver.');
+			}
+
+			// The body needs to stay intact, so we copy everything to a
+			// temporary stream.
+
+			$newBody = fopen('php://temp', 'r+');
+			fwrite($newBody, $firstByte);
+			stream_copy_to_stream($body, $newBody);
+			rewind($newBody);
+
+			$body = $newBody;
+		}
+
+		if ($this->server->tree->nodeExists($path)) {
+			$node = $this->server->tree->getNodeForPath($path);
+
+			// If the node is a collection, we'll deny it
+			if (!($node instanceof IFile)) {
+				throw new Exception\Conflict('PUT is not allowed on non-files.');
+			}
+			if (!$this->server->updateFile($path, $body, $etag)) {
+				return false;
+			}
+
+			$response->setHeader('Content-Length', '0');
+			if ($etag) {
+				$response->setHeader('ETag', $etag);
+			}
+			$response->setStatus(204);
+		} else {
+			$etag = null;
+			// If we got here, the resource didn't exist yet.
+			if (!$this->server->createFile($path, $body, $etag)) {
+				// For one reason or another the file was not created.
+				return false;
+			}
+
+			$response->setHeader('Content-Length', '0');
+			if ($etag) {
+				$response->setHeader('ETag', $etag);
+			}
+			$response->setStatus(201);
+		}
+
+		// Sending back false will interrupt the event chain and tell the server
+		// we've handled this method.
+		return false;
+	}
+
+	/**
+	 * WebDAV MKCOL.
+	 *
+	 * The MKCOL method is used to create a new collection (directory) on the server
+	 *
+	 * @return bool
+	 */
+	public function httpMkcol(RequestInterface $request, ResponseInterface $response)
+	{
+		$requestBody = $request->getBodyAsString();
+		$path = $request->getPath();
+
+		if ($requestBody) {
+			$contentType = $request->getHeader('Content-Type');
+			if (null === $contentType || (0 !== strpos($contentType, 'application/xml') && 0 !== strpos($contentType, 'text/xml'))) {
+				// We must throw 415 for unsupported mkcol bodies
+				throw new Exception\UnsupportedMediaType('The request body for the MKCOL request must have an xml Content-Type');
+			}
+
+			try {
+				$mkcol = $this->server->xml->expect('{DAV:}mkcol', $requestBody);
+			} catch (\Sabre\Xml\ParseException $e) {
+				throw new Exception\BadRequest($e->getMessage(), 0, $e);
+			}
+
+			$properties = $mkcol->getProperties();
+
+			if (!isset($properties['{DAV:}resourcetype'])) {
+				throw new Exception\BadRequest('The mkcol request must include a {DAV:}resourcetype property');
+			}
+			$resourceType = $properties['{DAV:}resourcetype']->getValue();
+			unset($properties['{DAV:}resourcetype']);
+		} else {
+			$properties = [];
+			$resourceType = ['{DAV:}collection'];
+		}
+
+		$mkcol = new MkCol($resourceType, $properties);
+
+		$result = $this->server->createCollection($path, $mkcol);
+
+		if (is_array($result)) {
+			$response->setStatus(207);
+			$response->setHeader('Content-Type', 'application/xml; charset=utf-8');
+
+			$response->setBody(
+				$this->server->generateMultiStatus([$result])
+			);
+		} else {
+			$response->setHeader('Content-Length', '0');
+			$response->setStatus(201);
+		}
+
+		// Sending back false will interrupt the event chain and tell the server
+		// we've handled this method.
+		return false;
+	}
+
+	/**
+	 * WebDAV HTTP MOVE method.
+	 *
+	 * This method moves one uri to a different uri. A lot of the actual request processing is done in getCopyMoveInfo
+	 *
+	 * @return bool
+	 */
+	public function httpMove(RequestInterface $request, ResponseInterface $response)
+	{
+		$path = $request->getPath();
+
+		$moveInfo = $this->server->getCopyAndMoveInfo($request);
+
+		if ($moveInfo['destinationExists']) {
+			if (!$this->server->emit('beforeUnbind', [$moveInfo['destination']])) {
+				return false;
+			}
+		}
+		if (!$this->server->emit('beforeUnbind', [$path])) {
+			return false;
+		}
+		if (!$this->server->emit('beforeBind', [$moveInfo['destination']])) {
+			return false;
+		}
+		if (!$this->server->emit('beforeMove', [$path, $moveInfo['destination']])) {
+			return false;
+		}
+
+		if ($moveInfo['destinationExists']) {
+			$this->server->tree->delete($moveInfo['destination']);
+			$this->server->emit('afterUnbind', [$moveInfo['destination']]);
+		}
+
+		$this->server->tree->move($path, $moveInfo['destination']);
+
+		// Its important afterMove is called before afterUnbind, because it
+		// allows systems to transfer data from one path to another.
+		// PropertyStorage uses this. If afterUnbind was first, it would clean
+		// up all the properties before it has a chance.
+		$this->server->emit('afterMove', [$path, $moveInfo['destination']]);
+		$this->server->emit('afterUnbind', [$path]);
+		$this->server->emit('afterBind', [$moveInfo['destination']]);
+
+		// If a resource was overwritten we should send a 204, otherwise a 201
+		$response->setHeader('Content-Length', '0');
+		$response->setStatus($moveInfo['destinationExists'] ? 204 : 201);
+
+		// Sending back false will interrupt the event chain and tell the server
+		// we've handled this method.
+		return false;
+	}
+
+	/**
+	 * WebDAV HTTP COPY method.
+	 *
+	 * This method copies one uri to a different uri, and works much like the MOVE request
+	 * A lot of the actual request processing is done in getCopyMoveInfo
+	 *
+	 * @return bool
+	 */
+	public function httpCopy(RequestInterface $request, ResponseInterface $response)
+	{
+		$path = $request->getPath();
+
+		$copyInfo = $this->server->getCopyAndMoveInfo($request);
+
+		if (!$this->server->emit('beforeBind', [$copyInfo['destination']])) {
+			return false;
+		}
+		if (!$this->server->emit('beforeCopy', [$path, $copyInfo['destination']])) {
+			return false;
+		}
+
+		if ($copyInfo['destinationExists']) {
+			if (!$this->server->emit('beforeUnbind', [$copyInfo['destination']])) {
+				return false;
+			}
+			$this->server->tree->delete($copyInfo['destination']);
+		}
+
+		$this->server->tree->copy($path, $copyInfo['destination']);
+		$this->server->emit('afterCopy', [$path, $copyInfo['destination']]);
+		$this->server->emit('afterBind', [$copyInfo['destination']]);
+
+		// If a resource was overwritten we should send a 204, otherwise a 201
+		$response->setHeader('Content-Length', '0');
+		$response->setStatus($copyInfo['destinationExists'] ? 204 : 201);
+
+		// Sending back false will interrupt the event chain and tell the server
+		// we've handled this method.
+		return false;
+	}
+
+	/**
+	 * HTTP REPORT method implementation.
+	 *
+	 * Although the REPORT method is not part of the standard WebDAV spec (it's from rfc3253)
+	 * It's used in a lot of extensions, so it made sense to implement it into the core.
+	 *
+	 * @return bool
+	 */
+	public function httpReport(RequestInterface $request, ResponseInterface $response)
+	{
+		$path = $request->getPath();
+
+		$result = $this->server->xml->parse(
+			$request->getBody(),
+			$request->getUrl(),
+			$rootElementName
+		);
+
+		if ($this->server->emit('report', [$rootElementName, $result, $path])) {
+			// If emit returned true, it means the report was not supported
+			throw new Exception\ReportNotSupported();
+		}
+
+		// Sending back false will interrupt the event chain and tell the server
+		// we've handled this method.
+		return false;
+	}
+
+	/**
+	 * This method is called during property updates.
+	 *
+	 * Here we check if a user attempted to update a protected property and
+	 * ensure that the process fails if this is the case.
+	 *
+	 * @param string $path
+	 */
+	public function propPatchProtectedPropertyCheck($path, PropPatch $propPatch)
+	{
+		// Comparing the mutation list to the list of protected properties.
+		$mutations = $propPatch->getMutations();
+
+		$protected = array_intersect(
+			$this->server->protectedProperties,
+			array_keys($mutations)
+		);
+
+		if ($protected) {
+			$propPatch->setResultCode($protected, 403);
+		}
+	}
+
+	/**
+	 * This method is called during property updates.
+	 *
+	 * Here we check if a node implements IProperties and let the node handle
+	 * updating of (some) properties.
+	 *
+	 * @param string $path
+	 */
+	public function propPatchNodeUpdate($path, PropPatch $propPatch)
+	{
+		// This should trigger a 404 if the node doesn't exist.
+		$node = $this->server->tree->getNodeForPath($path);
+
+		if ($node instanceof IProperties) {
+			$node->propPatch($propPatch);
+		}
+	}
+
+	/**
+	 * This method is called when properties are retrieved.
+	 *
+	 * Here we add all the default properties.
+	 */
+	public function propFind(PropFind $propFind, INode $node)
+	{
+		$propFind->handle('{DAV:}getlastmodified', function () use ($node) {
+			$lm = $node->getLastModified();
+			if ($lm) {
+				return new Xml\Property\GetLastModified($lm);
+			}
+		});
+
+		if ($node instanceof IFile) {
+			$propFind->handle('{DAV:}getcontentlength', [$node, 'getSize']);
+			$propFind->handle('{DAV:}getetag', [$node, 'getETag']);
+			$propFind->handle('{DAV:}getcontenttype', [$node, 'getContentType']);
+		}
+
+		if ($node instanceof IQuota) {
+			$quotaInfo = null;
+			$propFind->handle('{DAV:}quota-used-bytes', function () use (&$quotaInfo, $node) {
+				$quotaInfo = $node->getQuotaInfo();
+
+				return $quotaInfo[0];
+			});
+			$propFind->handle('{DAV:}quota-available-bytes', function () use (&$quotaInfo, $node) {
+				if (!$quotaInfo) {
+					$quotaInfo = $node->getQuotaInfo();
+				}
+
+				return $quotaInfo[1];
+			});
+		}
+
+		$propFind->handle('{DAV:}supported-report-set', function () use ($propFind) {
+			$reports = [];
+			foreach ($this->server->getPlugins() as $plugin) {
+				$reports = array_merge($reports, $plugin->getSupportedReportSet($propFind->getPath()));
+			}
+
+			return new Xml\Property\SupportedReportSet($reports);
+		});
+		$propFind->handle('{DAV:}resourcetype', function () use ($node) {
+			return new Xml\Property\ResourceType($this->server->getResourceTypeForNode($node));
+		});
+		$propFind->handle('{DAV:}supported-method-set', function () use ($propFind) {
+			return new Xml\Property\SupportedMethodSet(
+				$this->server->getAllowedMethods($propFind->getPath())
+			);
+		});
+	}
+
+	/**
+	 * Fetches properties for a node.
+	 *
+	 * This event is called a bit later, so plugins have a chance first to
+	 * populate the result.
+	 */
+	public function propFindNode(PropFind $propFind, INode $node)
+	{
+		if ($node instanceof IProperties && $propertyNames = $propFind->get404Properties()) {
+			$nodeProperties = $node->getProperties($propertyNames);
+			foreach ($nodeProperties as $propertyName => $propertyValue) {
+				$propFind->set($propertyName, $propertyValue, 200);
+			}
+		}
+	}
+
+	/**
+	 * This method is called when properties are retrieved.
+	 *
+	 * This specific handler is called very late in the process, because we
+	 * want other systems to first have a chance to handle the properties.
+	 */
+	public function propFindLate(PropFind $propFind, INode $node)
+	{
+		$propFind->handle('{http://calendarserver.org/ns/}getctag', function () use ($propFind) {
+			// If we already have a sync-token from the current propFind
+			// request, we can re-use that.
+			$val = $propFind->get('{http://sabredav.org/ns}sync-token');
+			if ($val) {
+				return $val;
+			}
+
+			$val = $propFind->get('{DAV:}sync-token');
+			if ($val && is_scalar($val)) {
+				return $val;
+			}
+			if ($val && $val instanceof Xml\Property\Href) {
+				return substr($val->getHref(), strlen(Sync\Plugin::SYNCTOKEN_PREFIX));
+			}
+
+			// If we got here, the earlier two properties may simply not have
+			// been part of the earlier request. We're going to fetch them.
+			$result = $this->server->getProperties($propFind->getPath(), [
+				'{http://sabredav.org/ns}sync-token',
+				'{DAV:}sync-token',
+			]);
+
+			if (isset($result['{http://sabredav.org/ns}sync-token'])) {
+				return $result['{http://sabredav.org/ns}sync-token'];
+			}
+			if (isset($result['{DAV:}sync-token'])) {
+				$val = $result['{DAV:}sync-token'];
+				if (is_scalar($val)) {
+					return $val;
+				} elseif ($val instanceof Xml\Property\Href) {
+					return substr($val->getHref(), strlen(Sync\Plugin::SYNCTOKEN_PREFIX));
+				}
+			}
+		});
+	}
+
+	/**
+	 * Listens for exception events, and automatically logs them.
+	 *
+	 * @param Exception $e
+	 */
+	public function exception($e)
+	{
+		$logLevel = \Psr\Log\LogLevel::CRITICAL;
+		if ($e instanceof \Sabre\DAV\Exception) {
+			// If it's a standard sabre/dav exception, it means we have a http
+			// status code available.
+			$code = $e->getHTTPCode();
+
+			if ($code >= 400 && $code < 500) {
+				// user error
+				$logLevel = \Psr\Log\LogLevel::INFO;
+			} else {
+				// Server-side error. We mark it's as an error, but it's not
+				// critical.
+				$logLevel = \Psr\Log\LogLevel::ERROR;
+			}
+		}
+
+		$this->server->getLogger()->log(
+			$logLevel,
+			'Uncaught exception',
+			[
+				'exception' => $e,
+			]
+		);
+	}
+
+	/**
+	 * Returns a bunch of meta-data about the plugin.
+	 *
+	 * Providing this information is optional, and is mainly displayed by the
+	 * Browser plugin.
+	 *
+	 * The description key in the returned array may contain html and will not
+	 * be sanitized.
+	 *
+	 * @return array
+	 */
+	public function getPluginInfo()
+	{
+		return [
+			'name' => $this->getPluginName(),
+			'description' => 'The Core plugin provides a lot of the basic functionality required by WebDAV, such as a default implementation for all HTTP and WebDAV methods.',
+			'link' => null,
+		];
+	}
 }