diff --git a/apps/files_external/3rdparty/composer.json b/apps/files_external/3rdparty/composer.json
index f1613f0c70..307a062c7e 100644
--- a/apps/files_external/3rdparty/composer.json
+++ b/apps/files_external/3rdparty/composer.json
@@ -8,7 +8,7 @@
 		"classmap-authoritative": true
 	},
 	"require": {
-		"icewind/smb": "2.0.2",
+		"icewind/smb": "2.0.3",
 		"icewind/streams": "0.5.2"
 	}
 }
diff --git a/apps/files_external/3rdparty/composer.lock b/apps/files_external/3rdparty/composer.lock
index 0cf5cabdc1..e00a7bd80e 100644
--- a/apps/files_external/3rdparty/composer.lock
+++ b/apps/files_external/3rdparty/composer.lock
@@ -4,20 +4,20 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "85f8c3519f909ded38d917d3901f2709",
+    "content-hash": "b6a304e8ab2effa3791b513007fadcbc",
     "packages": [
         {
             "name": "icewind/smb",
-            "version": "v2.0.2",
+            "version": "v2.0.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/icewind1991/SMB.git",
-                "reference": "6691355d9314ac3a8cb9ec9446e4c26e8aab09d0"
+                "reference": "8394551bf29a37b884edb33dae8acde369177f32"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/icewind1991/SMB/zipball/6691355d9314ac3a8cb9ec9446e4c26e8aab09d0",
-                "reference": "6691355d9314ac3a8cb9ec9446e4c26e8aab09d0",
+                "url": "https://api.github.com/repos/icewind1991/SMB/zipball/8394551bf29a37b884edb33dae8acde369177f32",
+                "reference": "8394551bf29a37b884edb33dae8acde369177f32",
                 "shasum": ""
             },
             "require": {
@@ -45,7 +45,7 @@
                 }
             ],
             "description": "php wrapper for smbclient and libsmbclient-php",
-            "time": "2017-08-16T16:08:57+00:00"
+            "time": "2017-10-18T16:21:10+00:00"
         },
         {
             "name": "icewind/streams",
diff --git a/apps/files_external/3rdparty/composer/ClassLoader.php b/apps/files_external/3rdparty/composer/ClassLoader.php
index 2c72175e77..c6f6d2322b 100644
--- a/apps/files_external/3rdparty/composer/ClassLoader.php
+++ b/apps/files_external/3rdparty/composer/ClassLoader.php
@@ -43,7 +43,8 @@ namespace Composer\Autoload;
 class ClassLoader
 {
     // PSR-4
-    private $prefixLengthsPsr4 = array();
+    private $firstCharsPsr4 = array();
+    private $prefixLengthsPsr4 = array(); // For BC with legacy static maps
     private $prefixDirsPsr4 = array();
     private $fallbackDirsPsr4 = array();
 
@@ -170,11 +171,10 @@ class ClassLoader
             }
         } elseif (!isset($this->prefixDirsPsr4[$prefix])) {
             // Register directories for a new namespace.
-            $length = strlen($prefix);
-            if ('\\' !== $prefix[$length - 1]) {
+            if ('\\' !== substr($prefix, -1)) {
                 throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
             }
-            $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
+            $this->firstCharsPsr4[$prefix[0]] = true;
             $this->prefixDirsPsr4[$prefix] = (array) $paths;
         } elseif ($prepend) {
             // Prepend directories for an already registered namespace.
@@ -221,11 +221,10 @@ class ClassLoader
         if (!$prefix) {
             $this->fallbackDirsPsr4 = (array) $paths;
         } else {
-            $length = strlen($prefix);
-            if ('\\' !== $prefix[$length - 1]) {
+            if ('\\' !== substr($prefix, -1)) {
                 throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
             }
-            $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
+            $this->firstCharsPsr4[$prefix[0]] = true;
             $this->prefixDirsPsr4[$prefix] = (array) $paths;
         }
     }
@@ -373,15 +372,15 @@ class ClassLoader
         $logicalPathPsr4 = strtr($class, '\\', DIRECTORY_SEPARATOR) . $ext;
 
         $first = $class[0];
-        if (isset($this->prefixLengthsPsr4[$first])) {
+        if (isset($this->firstCharsPsr4[$first]) || isset($this->prefixLengthsPsr4[$first])) {
             $subPath = $class;
             while (false !== $lastPos = strrpos($subPath, '\\')) {
                 $subPath = substr($subPath, 0, $lastPos);
                 $search = $subPath.'\\';
                 if (isset($this->prefixDirsPsr4[$search])) {
+                    $pathEnd = DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $lastPos + 1);
                     foreach ($this->prefixDirsPsr4[$search] as $dir) {
-                        $length = $this->prefixLengthsPsr4[$first][$search];
-                        if (file_exists($file = $dir . DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $length))) {
+                        if (file_exists($file = $dir . $pathEnd)) {
                             return $file;
                         }
                     }
diff --git a/apps/files_external/3rdparty/composer/autoload_classmap.php b/apps/files_external/3rdparty/composer/autoload_classmap.php
index 4c596a4441..257bdb64eb 100644
--- a/apps/files_external/3rdparty/composer/autoload_classmap.php
+++ b/apps/files_external/3rdparty/composer/autoload_classmap.php
@@ -22,6 +22,7 @@ return array(
     'Icewind\\SMB\\Exception\\ForbiddenException' => $vendorDir . '/icewind/smb/src/Exception/ForbiddenException.php',
     'Icewind\\SMB\\Exception\\HostDownException' => $vendorDir . '/icewind/smb/src/Exception/HostDownException.php',
     'Icewind\\SMB\\Exception\\InvalidHostException' => $vendorDir . '/icewind/smb/src/Exception/InvalidHostException.php',
+    'Icewind\\SMB\\Exception\\InvalidParameterException' => $vendorDir . '/icewind/smb/src/Exception/InvalidParameterException.php',
     'Icewind\\SMB\\Exception\\InvalidPathException' => $vendorDir . '/icewind/smb/src/Exception/InvalidPathException.php',
     'Icewind\\SMB\\Exception\\InvalidRequestException' => $vendorDir . '/icewind/smb/src/Exception/InvalidRequestException.php',
     'Icewind\\SMB\\Exception\\InvalidResourceException' => $vendorDir . '/icewind/smb/src/Exception/InvalidResourceException.php',
@@ -30,6 +31,8 @@ return array(
     'Icewind\\SMB\\Exception\\NoRouteToHostException' => $vendorDir . '/icewind/smb/src/Exception/NoRouteToHostException.php',
     'Icewind\\SMB\\Exception\\NotEmptyException' => $vendorDir . '/icewind/smb/src/Exception/NotEmptyException.php',
     'Icewind\\SMB\\Exception\\NotFoundException' => $vendorDir . '/icewind/smb/src/Exception/NotFoundException.php',
+    'Icewind\\SMB\\Exception\\OutOfSpaceException' => $vendorDir . '/icewind/smb/src/Exception/OutOfSpaceException.php',
+    'Icewind\\SMB\\Exception\\RevisionMismatchException' => $vendorDir . '/icewind/smb/src/Exception/RevisionMismatchException.php',
     'Icewind\\SMB\\Exception\\TimedOutException' => $vendorDir . '/icewind/smb/src/Exception/TimedOutException.php',
     'Icewind\\SMB\\FileInfo' => $vendorDir . '/icewind/smb/src/FileInfo.php',
     'Icewind\\SMB\\IFileInfo' => $vendorDir . '/icewind/smb/src/IFileInfo.php',
diff --git a/apps/files_external/3rdparty/composer/autoload_static.php b/apps/files_external/3rdparty/composer/autoload_static.php
index 459de971c4..5315a31a3e 100644
--- a/apps/files_external/3rdparty/composer/autoload_static.php
+++ b/apps/files_external/3rdparty/composer/autoload_static.php
@@ -6,14 +6,8 @@ namespace Composer\Autoload;
 
 class ComposerStaticInit98fe9b281934250b3a93f69a5ce843b3
 {
-    public static $prefixLengthsPsr4 = array (
-        'I' => 
-        array (
-            'Icewind\\Streams\\Tests\\' => 22,
-            'Icewind\\Streams\\' => 16,
-            'Icewind\\SMB\\Test\\' => 17,
-            'Icewind\\SMB\\' => 12,
-        ),
+    public static $firstCharsPsr4 = array (
+        'I' => true,
     );
 
     public static $prefixDirsPsr4 = array (
@@ -52,6 +46,7 @@ class ComposerStaticInit98fe9b281934250b3a93f69a5ce843b3
         'Icewind\\SMB\\Exception\\ForbiddenException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/ForbiddenException.php',
         'Icewind\\SMB\\Exception\\HostDownException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/HostDownException.php',
         'Icewind\\SMB\\Exception\\InvalidHostException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/InvalidHostException.php',
+        'Icewind\\SMB\\Exception\\InvalidParameterException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/InvalidParameterException.php',
         'Icewind\\SMB\\Exception\\InvalidPathException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/InvalidPathException.php',
         'Icewind\\SMB\\Exception\\InvalidRequestException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/InvalidRequestException.php',
         'Icewind\\SMB\\Exception\\InvalidResourceException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/InvalidResourceException.php',
@@ -60,6 +55,8 @@ class ComposerStaticInit98fe9b281934250b3a93f69a5ce843b3
         'Icewind\\SMB\\Exception\\NoRouteToHostException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/NoRouteToHostException.php',
         'Icewind\\SMB\\Exception\\NotEmptyException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/NotEmptyException.php',
         'Icewind\\SMB\\Exception\\NotFoundException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/NotFoundException.php',
+        'Icewind\\SMB\\Exception\\OutOfSpaceException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/OutOfSpaceException.php',
+        'Icewind\\SMB\\Exception\\RevisionMismatchException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/RevisionMismatchException.php',
         'Icewind\\SMB\\Exception\\TimedOutException' => __DIR__ . '/..' . '/icewind/smb/src/Exception/TimedOutException.php',
         'Icewind\\SMB\\FileInfo' => __DIR__ . '/..' . '/icewind/smb/src/FileInfo.php',
         'Icewind\\SMB\\IFileInfo' => __DIR__ . '/..' . '/icewind/smb/src/IFileInfo.php',
@@ -120,7 +117,7 @@ class ComposerStaticInit98fe9b281934250b3a93f69a5ce843b3
     public static function getInitializer(ClassLoader $loader)
     {
         return \Closure::bind(function () use ($loader) {
-            $loader->prefixLengthsPsr4 = ComposerStaticInit98fe9b281934250b3a93f69a5ce843b3::$prefixLengthsPsr4;
+            $loader->firstCharsPsr4 = ComposerStaticInit98fe9b281934250b3a93f69a5ce843b3::$firstCharsPsr4;
             $loader->prefixDirsPsr4 = ComposerStaticInit98fe9b281934250b3a93f69a5ce843b3::$prefixDirsPsr4;
             $loader->classMap = ComposerStaticInit98fe9b281934250b3a93f69a5ce843b3::$classMap;
 
diff --git a/apps/files_external/3rdparty/composer/installed.json b/apps/files_external/3rdparty/composer/installed.json
index aafe1591fa..8183ba7bb0 100644
--- a/apps/files_external/3rdparty/composer/installed.json
+++ b/apps/files_external/3rdparty/composer/installed.json
@@ -1,4 +1,47 @@
 [
+    {
+        "name": "icewind/smb",
+        "version": "v2.0.3",
+        "version_normalized": "2.0.3.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/icewind1991/SMB.git",
+            "reference": "8394551bf29a37b884edb33dae8acde369177f32"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/icewind1991/SMB/zipball/8394551bf29a37b884edb33dae8acde369177f32",
+            "reference": "8394551bf29a37b884edb33dae8acde369177f32",
+            "shasum": ""
+        },
+        "require": {
+            "icewind/streams": ">=0.2.0",
+            "php": ">=5.4"
+        },
+        "require-dev": {
+            "phpunit/phpunit": "^4.8"
+        },
+        "time": "2017-10-18T16:21:10+00:00",
+        "type": "library",
+        "installation-source": "source",
+        "autoload": {
+            "psr-4": {
+                "Icewind\\SMB\\": "src/",
+                "Icewind\\SMB\\Test\\": "tests/"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Robin Appelman",
+                "email": "icewind@owncloud.com"
+            }
+        ],
+        "description": "php wrapper for smbclient and libsmbclient-php"
+    },
     {
         "name": "icewind/streams",
         "version": "0.5.2",
@@ -41,48 +84,5 @@
             }
         ],
         "description": "A set of generic stream wrappers"
-    },
-    {
-        "name": "icewind/smb",
-        "version": "v2.0.2",
-        "version_normalized": "2.0.2.0",
-        "source": {
-            "type": "git",
-            "url": "https://github.com/icewind1991/SMB.git",
-            "reference": "6691355d9314ac3a8cb9ec9446e4c26e8aab09d0"
-        },
-        "dist": {
-            "type": "zip",
-            "url": "https://api.github.com/repos/icewind1991/SMB/zipball/6691355d9314ac3a8cb9ec9446e4c26e8aab09d0",
-            "reference": "6691355d9314ac3a8cb9ec9446e4c26e8aab09d0",
-            "shasum": ""
-        },
-        "require": {
-            "icewind/streams": ">=0.2.0",
-            "php": ">=5.4"
-        },
-        "require-dev": {
-            "phpunit/phpunit": "^4.8"
-        },
-        "time": "2017-08-16T16:08:57+00:00",
-        "type": "library",
-        "installation-source": "source",
-        "autoload": {
-            "psr-4": {
-                "Icewind\\SMB\\": "src/",
-                "Icewind\\SMB\\Test\\": "tests/"
-            }
-        },
-        "notification-url": "https://packagist.org/downloads/",
-        "license": [
-            "MIT"
-        ],
-        "authors": [
-            {
-                "name": "Robin Appelman",
-                "email": "icewind@owncloud.com"
-            }
-        ],
-        "description": "php wrapper for smbclient and libsmbclient-php"
     }
 ]
diff --git a/apps/files_external/3rdparty/icewind/smb/src/ErrorCodes.php b/apps/files_external/3rdparty/icewind/smb/src/ErrorCodes.php
index 03bd574c18..d36cdaf2c7 100644
--- a/apps/files_external/3rdparty/icewind/smb/src/ErrorCodes.php
+++ b/apps/files_external/3rdparty/icewind/smb/src/ErrorCodes.php
@@ -15,7 +15,7 @@ class ErrorCodes {
 	const BadHostName = 'NT_STATUS_BAD_NETWORK_NAME';
 	const Unsuccessful = 'NT_STATUS_UNSUCCESSFUL';
 	const ConnectionRefused = 'NT_STATUS_CONNECTION_REFUSED';
-	const NoLogonServers =  'NT_STATUS_NO_LOGON_SERVERS';
+	const NoLogonServers = 'NT_STATUS_NO_LOGON_SERVERS';
 
 	const PathNotFound = 'NT_STATUS_OBJECT_PATH_NOT_FOUND';
 	const NoSuchFile = 'NT_STATUS_NO_SUCH_FILE';
@@ -26,4 +26,6 @@ class ErrorCodes {
 	const FileIsADirectory = 'NT_STATUS_FILE_IS_A_DIRECTORY';
 	const NotADirectory = 'NT_STATUS_NOT_A_DIRECTORY';
 	const SharingViolation = 'NT_STATUS_SHARING_VIOLATION';
+	const InvalidParameter = 'NT_STATUS_INVALID_PARAMETER';
+	const RevisionMismatch = 'NT_STATUS_REVISION_MISMATCH';
 }
diff --git a/apps/files_external/3rdparty/icewind/smb/src/Exception/Exception.php b/apps/files_external/3rdparty/icewind/smb/src/Exception/Exception.php
index 7ac528198a..93f2c1b3e2 100644
--- a/apps/files_external/3rdparty/icewind/smb/src/Exception/Exception.php
+++ b/apps/files_external/3rdparty/icewind/smb/src/Exception/Exception.php
@@ -14,7 +14,7 @@ class Exception extends \Exception {
 			$message .= ' for ' . $path;
 		}
 
-		return new Exception($message, $error);
+		return new Exception($message, is_string($error) ? 0 : $error);
 	}
 
 	/**
diff --git a/apps/files_external/3rdparty/icewind/smb/src/Exception/InvalidParameterException.php b/apps/files_external/3rdparty/icewind/smb/src/Exception/InvalidParameterException.php
new file mode 100644
index 0000000000..163b571183
--- /dev/null
+++ b/apps/files_external/3rdparty/icewind/smb/src/Exception/InvalidParameterException.php
@@ -0,0 +1,10 @@
+<?php
+/**
+ * Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Licensed under the MIT license:
+ * http://opensource.org/licenses/MIT
+ */
+
+namespace Icewind\SMB\Exception;
+
+class InvalidParameterException extends InvalidRequestException {}
diff --git a/apps/files_external/3rdparty/icewind/smb/src/Exception/OutOfSpaceException.php b/apps/files_external/3rdparty/icewind/smb/src/Exception/OutOfSpaceException.php
new file mode 100644
index 0000000000..4c5517a140
--- /dev/null
+++ b/apps/files_external/3rdparty/icewind/smb/src/Exception/OutOfSpaceException.php
@@ -0,0 +1,11 @@
+<?php
+/**
+ * Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Licensed under the MIT license:
+ * http://opensource.org/licenses/MIT
+ */
+
+namespace Icewind\SMB\Exception;
+
+class OutOfSpaceException extends InvalidRequestException {
+}
diff --git a/apps/files_external/3rdparty/icewind/smb/src/Exception/RevisionMismatchException.php b/apps/files_external/3rdparty/icewind/smb/src/Exception/RevisionMismatchException.php
new file mode 100644
index 0000000000..e898b5a234
--- /dev/null
+++ b/apps/files_external/3rdparty/icewind/smb/src/Exception/RevisionMismatchException.php
@@ -0,0 +1,16 @@
+<?php
+/**
+ * Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Licensed under the MIT license:
+ * http://opensource.org/licenses/MIT
+ */
+
+namespace Icewind\SMB\Exception;
+
+use Throwable;
+
+class RevisionMismatchException extends Exception {
+	public function __construct($message = 'Protocol version mismatch', $code = 0, Throwable $previous = null) {
+		parent::__construct($message, $code, $previous);
+	}
+}
diff --git a/apps/files_external/3rdparty/icewind/smb/src/NativeState.php b/apps/files_external/3rdparty/icewind/smb/src/NativeState.php
index 7ddce83185..45e0441d25 100644
--- a/apps/files_external/3rdparty/icewind/smb/src/NativeState.php
+++ b/apps/files_external/3rdparty/icewind/smb/src/NativeState.php
@@ -31,6 +31,7 @@ class NativeState {
 		17  => '\Icewind\SMB\Exception\AlreadyExistsException',
 		20  => '\Icewind\SMB\Exception\InvalidTypeException',
 		21  => '\Icewind\SMB\Exception\InvalidTypeException',
+		28  => '\Icewind\SMB\Exception\OutOfSpaceException',
 		39  => '\Icewind\SMB\Exception\NotEmptyException',
 		110 => '\Icewind\SMB\Exception\TimedOutException',
 		111 => '\Icewind\SMB\Exception\ConnectionRefusedException',
diff --git a/apps/files_external/3rdparty/icewind/smb/src/NotifyHandler.php b/apps/files_external/3rdparty/icewind/smb/src/NotifyHandler.php
index 6ad565555b..20ada5cf32 100644
--- a/apps/files_external/3rdparty/icewind/smb/src/NotifyHandler.php
+++ b/apps/files_external/3rdparty/icewind/smb/src/NotifyHandler.php
@@ -9,6 +9,8 @@
 namespace Icewind\SMB;
 
 
+use Icewind\SMB\Exception\Exception;
+
 class NotifyHandler implements INotifyHandler {
 	/**
 	 * @var Connection
@@ -22,6 +24,12 @@ class NotifyHandler implements INotifyHandler {
 
 	private $listening = true;
 
+	// todo replace with static once <5.6 support is dropped
+	// see error.h
+	private static $exceptionMap = [
+		ErrorCodes::RevisionMismatch => '\Icewind\SMB\Exception\RevisionMismatchException',
+	];
+
 	/**
 	 * @param Connection $connection
 	 * @param string $path
@@ -43,6 +51,7 @@ class NotifyHandler implements INotifyHandler {
 		stream_set_blocking($this->connection->getOutputStream(), 0);
 		$lines = [];
 		while (($line = $this->connection->readLine())) {
+			$this->checkForError($line);
 			$lines[] = $line;
 		}
 		stream_set_blocking($this->connection->getOutputStream(), 1);
@@ -59,6 +68,7 @@ class NotifyHandler implements INotifyHandler {
 	public function listen($callback) {
 		if ($this->listening) {
 			$this->connection->read(function ($line) use ($callback) {
+				$this->checkForError($line);
 				$change = $this->parseChangeLine($line);
 				if ($change) {
 					return $callback($change);
@@ -80,6 +90,13 @@ class NotifyHandler implements INotifyHandler {
 		}
 	}
 
+	private function checkForError($line) {
+		if (substr($line, 0, 16) === 'notify returned ') {
+			$error = substr($line, 16);
+			throw Exception::fromMap(self::$exceptionMap, $error, 'Notify is not supported with the used smb version');
+		}
+	}
+
 	public function stop() {
 		$this->listening = false;
 		$this->connection->close();
diff --git a/apps/files_external/3rdparty/icewind/smb/src/Parser.php b/apps/files_external/3rdparty/icewind/smb/src/Parser.php
index 5cc5acbdf5..3142f9c29e 100644
--- a/apps/files_external/3rdparty/icewind/smb/src/Parser.php
+++ b/apps/files_external/3rdparty/icewind/smb/src/Parser.php
@@ -30,6 +30,7 @@ class Parser {
 	// todo replace with static once <5.6 support is dropped
 	// see error.h
 	private static $exceptionMap = [
+		ErrorCodes::LogonFailure      => '\Icewind\SMB\Exception\AuthenticationException',
 		ErrorCodes::PathNotFound      => '\Icewind\SMB\Exception\NotFoundException',
 		ErrorCodes::ObjectNotFound    => '\Icewind\SMB\Exception\NotFoundException',
 		ErrorCodes::NoSuchFile        => '\Icewind\SMB\Exception\NotFoundException',
@@ -38,7 +39,8 @@ class Parser {
 		ErrorCodes::DirectoryNotEmpty => '\Icewind\SMB\Exception\NotEmptyException',
 		ErrorCodes::FileIsADirectory  => '\Icewind\SMB\Exception\InvalidTypeException',
 		ErrorCodes::NotADirectory     => '\Icewind\SMB\Exception\InvalidTypeException',
-		ErrorCodes::SharingViolation  => '\Icewind\SMB\Exception\FileInUseException'
+		ErrorCodes::SharingViolation  => '\Icewind\SMB\Exception\FileInUseException',
+		ErrorCodes::InvalidParameter  => '\Icewind\SMB\Exception\InvalidParameterException'
 	];
 
 	/**
diff --git a/apps/files_external/3rdparty/icewind/smb/src/RawConnection.php b/apps/files_external/3rdparty/icewind/smb/src/RawConnection.php
index e934971643..42923f09ed 100644
--- a/apps/files_external/3rdparty/icewind/smb/src/RawConnection.php
+++ b/apps/files_external/3rdparty/icewind/smb/src/RawConnection.php
@@ -7,6 +7,7 @@
 
 namespace Icewind\SMB;
 
+use Icewind\SMB\Exception\ConnectException;
 use Icewind\SMB\Exception\ConnectionException;
 
 class RawConnection {
@@ -25,6 +26,9 @@ class RawConnection {
 	 *
 	 * $pipes[0] holds STDIN for smbclient
 	 * $pipes[1] holds STDOUT for smbclient
+	 * $pipes[3] holds the authfile for smbclient
+	 * $pipes[4] holds the stream for writing files
+	 * $pipes[5] holds the stream for reading files
 	 */
 	private $pipes;
 
@@ -33,32 +37,44 @@ class RawConnection {
 	 */
 	private $process;
 
-	public function __construct($command, $env = array()) {
+	/**
+	 * @var resource|null $authStream
+	 */
+	private $authStream = null;
+
+	private $connected = false;
+
+	public function __construct($command, array $env = []) {
 		$this->command = $command;
 		$this->env = $env;
-		$this->connect();
 	}
 
-	private function connect() {
-		$descriptorSpec = array(
-			0 => array('pipe', 'r'), // child reads from stdin
-			1 => array('pipe', 'w'), // child writes to stdout
-			2 => array('pipe', 'w'), // child writes to stderr
-			3 => array('pipe', 'r'), // child reads from fd#3
-			4 => array('pipe', 'r'), // child reads from fd#4
-			5 => array('pipe', 'w')  // child writes to fd#5
-		);
+	public function connect() {
+		if (is_null($this->getAuthStream())) {
+			throw new ConnectException('Authentication not set before connecting');
+		}
+
+		$descriptorSpec = [
+			0 => ['pipe', 'r'], // child reads from stdin
+			1 => ['pipe', 'w'], // child writes to stdout
+			2 => ['pipe', 'w'], // child writes to stderr
+			3 => $this->getAuthStream(), // child reads from fd#3
+			4 => ['pipe', 'r'], // child reads from fd#4
+			5 => ['pipe', 'w']  // child writes to fd#5
+		];
+
 		setlocale(LC_ALL, Server::LOCALE);
-		$env = array_merge($this->env, array(
+		$env = array_merge($this->env, [
 			'CLI_FORCE_INTERACTIVE' => 'y', // Needed or the prompt isn't displayed!!
-			'LC_ALL' => Server::LOCALE,
-			'LANG' => Server::LOCALE,
-			'COLUMNS' => 8192 // prevent smbclient from line-wrapping it's output
-		));
+			'LC_ALL'                => Server::LOCALE,
+			'LANG'                  => Server::LOCALE,
+			'COLUMNS'               => 8192 // prevent smbclient from line-wrapping it's output
+		]);
 		$this->process = proc_open($this->command, $descriptorSpec, $this->pipes, '/', $env);
 		if (!$this->isValid()) {
 			throw new ConnectionException();
 		}
+		$this->connected = true;
 	}
 
 	/**
@@ -129,7 +145,7 @@ class RawConnection {
 	}
 
 	public function getAuthStream() {
-		return $this->pipes[3];
+		return $this->authStream;
 	}
 
 	public function getFileInputStream() {
@@ -143,14 +159,10 @@ class RawConnection {
 	public function writeAuthentication($user, $password) {
 		$auth = ($password === false)
 			? "username=$user"
-			: "username=$user\npassword=$password";
+			: "username=$user\npassword=$password\n";
 
-		if (fwrite($this->getAuthStream(), $auth) === false) {
-			fclose($this->getAuthStream());
-			return false;
-		}
-		fclose($this->getAuthStream());
-		return true;
+		$this->authStream = fopen('php://temp', 'w+');
+		fwrite($this->getAuthStream(), $auth);
 	}
 
 	public function close($terminate = true) {
@@ -163,8 +175,8 @@ class RawConnection {
 				$status = proc_get_status($this->process);
 				$ppid = $status['pid'];
 				$pids = preg_split('/\s+/', `ps -o pid --no-heading --ppid $ppid`);
-				foreach($pids as $pid) {
-					if(is_numeric($pid)) {
+				foreach ($pids as $pid) {
+					if (is_numeric($pid)) {
 						//9 is the SIGKILL signal
 						posix_kill($pid, 9);
 					}
diff --git a/apps/files_external/3rdparty/icewind/smb/src/Server.php b/apps/files_external/3rdparty/icewind/smb/src/Server.php
index 12692eb4c6..21cc605ed1 100644
--- a/apps/files_external/3rdparty/icewind/smb/src/Server.php
+++ b/apps/files_external/3rdparty/icewind/smb/src/Server.php
@@ -134,6 +134,7 @@ class Server {
 		);
 		$connection = new RawConnection($command);
 		$connection->writeAuthentication($this->getUser(), $this->getPassword());
+		$connection->connect();
 		$output = $connection->readAll();
 		$parser = new Parser($this->timezoneProvider);
 
diff --git a/apps/files_external/3rdparty/icewind/smb/src/Share.php b/apps/files_external/3rdparty/icewind/smb/src/Share.php
index ba8bbbbb8c..542eaf0887 100644
--- a/apps/files_external/3rdparty/icewind/smb/src/Share.php
+++ b/apps/files_external/3rdparty/icewind/smb/src/Share.php
@@ -68,8 +68,9 @@ class Share extends AbstractShare {
 		);
 		$connection = new Connection($command, $this->parser);
 		$connection->writeAuthentication($this->server->getUser(), $this->server->getPassword());
+		$connection->connect();
 		if (!$connection->isValid()) {
-			throw new ConnectionException();
+			throw new ConnectionException($connection->readLine());
 		}
 		return $connection;
 	}
@@ -88,7 +89,6 @@ class Share extends AbstractShare {
 
 	protected function reconnect() {
 		$this->connection->reconnect();
-		$this->connection->writeAuthentication($this->server->getUser(), $this->server->getPassword());
 		if (!$this->connection->isValid()) {
 			throw new ConnectionException();
 		}
@@ -318,9 +318,9 @@ class Share extends AbstractShare {
 		$modeString = '';
 		$modeMap = array(
 			FileInfo::MODE_READONLY => 'r',
-			FileInfo::MODE_HIDDEN => 'h',
-			FileInfo::MODE_ARCHIVE => 'a',
-			FileInfo::MODE_SYSTEM => 's'
+			FileInfo::MODE_HIDDEN   => 'h',
+			FileInfo::MODE_ARCHIVE  => 'a',
+			FileInfo::MODE_SYSTEM   => 's'
 		);
 		foreach ($modeMap as $modeByte => $string) {
 			if ($mode & $modeByte) {
@@ -413,6 +413,7 @@ class Share extends AbstractShare {
 		}
 		$path = str_replace('/', '\\', $path);
 		$path = str_replace('"', '^"', $path);
+		$path = ltrim($path, '\\');
 		return '"' . $path . '"';
 	}