diff --git a/apps/files_external/3rdparty/.gitignore b/apps/files_external/3rdparty/.gitignore
index b56af237c3..a7913dd430 100644
--- a/apps/files_external/3rdparty/.gitignore
+++ b/apps/files_external/3rdparty/.gitignore
@@ -2,4 +2,5 @@ example.php
 icewind/smb/tests
 icewind/smb/install_libsmbclient.sh
 icewind/smb/.travis.yml
+icewind/smb/.scrutinizer.yml
 icewind/streams/tests
diff --git a/apps/files_external/3rdparty/composer.json b/apps/files_external/3rdparty/composer.json
index 2eab8a8f7b..f1613f0c70 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": "2.0.0",
+		"icewind/smb": "2.0.2",
 		"icewind/streams": "0.5.2"
 	}
 }
diff --git a/apps/files_external/3rdparty/composer.lock b/apps/files_external/3rdparty/composer.lock
index 99ef5f9487..0cf5cabdc1 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": "0bbca3fe2d180fbc5681985bdf6b22e7",
+    "content-hash": "85f8c3519f909ded38d917d3901f2709",
     "packages": [
         {
             "name": "icewind/smb",
-            "version": "v2.0.0",
+            "version": "v2.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/icewind1991/SMB.git",
-                "reference": "95a5ecbaf92617f9800ad7d6070ef31d8ff28c3a"
+                "reference": "6691355d9314ac3a8cb9ec9446e4c26e8aab09d0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/icewind1991/SMB/zipball/95a5ecbaf92617f9800ad7d6070ef31d8ff28c3a",
-                "reference": "95a5ecbaf92617f9800ad7d6070ef31d8ff28c3a",
+                "url": "https://api.github.com/repos/icewind1991/SMB/zipball/6691355d9314ac3a8cb9ec9446e4c26e8aab09d0",
+                "reference": "6691355d9314ac3a8cb9ec9446e4c26e8aab09d0",
                 "shasum": ""
             },
             "require": {
@@ -45,7 +45,7 @@
                 }
             ],
             "description": "php wrapper for smbclient and libsmbclient-php",
-            "time": "2016-12-13T13:56:55+00:00"
+            "time": "2017-08-16T16:08:57+00:00"
         },
         {
             "name": "icewind/streams",
diff --git a/apps/files_external/3rdparty/composer/ClassLoader.php b/apps/files_external/3rdparty/composer/ClassLoader.php
index 4626994fd4..2c72175e77 100644
--- a/apps/files_external/3rdparty/composer/ClassLoader.php
+++ b/apps/files_external/3rdparty/composer/ClassLoader.php
@@ -374,9 +374,13 @@ class ClassLoader
 
         $first = $class[0];
         if (isset($this->prefixLengthsPsr4[$first])) {
-            foreach ($this->prefixLengthsPsr4[$first] as $prefix => $length) {
-                if (0 === strpos($class, $prefix)) {
-                    foreach ($this->prefixDirsPsr4[$prefix] as $dir) {
+            $subPath = $class;
+            while (false !== $lastPos = strrpos($subPath, '\\')) {
+                $subPath = substr($subPath, 0, $lastPos);
+                $search = $subPath.'\\';
+                if (isset($this->prefixDirsPsr4[$search])) {
+                    foreach ($this->prefixDirsPsr4[$search] as $dir) {
+                        $length = $this->prefixLengthsPsr4[$first][$search];
                         if (file_exists($file = $dir . DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $length))) {
                             return $file;
                         }
diff --git a/apps/files_external/3rdparty/composer/LICENSE b/apps/files_external/3rdparty/composer/LICENSE
index 1a28124886..f27399a042 100644
--- a/apps/files_external/3rdparty/composer/LICENSE
+++ b/apps/files_external/3rdparty/composer/LICENSE
@@ -1,5 +1,5 @@
 
-Copyright (c) 2016 Nils Adermann, Jordi Boggiano
+Copyright (c) Nils Adermann, Jordi Boggiano
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/apps/files_external/3rdparty/composer/autoload_classmap.php b/apps/files_external/3rdparty/composer/autoload_classmap.php
index 97f4ce99cd..4c596a4441 100644
--- a/apps/files_external/3rdparty/composer/autoload_classmap.php
+++ b/apps/files_external/3rdparty/composer/autoload_classmap.php
@@ -36,10 +36,12 @@ return array(
     'Icewind\\SMB\\INotifyHandler' => $vendorDir . '/icewind/smb/src/INotifyHandler.php',
     'Icewind\\SMB\\IShare' => $vendorDir . '/icewind/smb/src/IShare.php',
     'Icewind\\SMB\\NativeFileInfo' => $vendorDir . '/icewind/smb/src/NativeFileInfo.php',
+    'Icewind\\SMB\\NativeReadStream' => $vendorDir . '/icewind/smb/src/NativeReadStream.php',
     'Icewind\\SMB\\NativeServer' => $vendorDir . '/icewind/smb/src/NativeServer.php',
     'Icewind\\SMB\\NativeShare' => $vendorDir . '/icewind/smb/src/NativeShare.php',
     'Icewind\\SMB\\NativeState' => $vendorDir . '/icewind/smb/src/NativeState.php',
     'Icewind\\SMB\\NativeStream' => $vendorDir . '/icewind/smb/src/NativeStream.php',
+    'Icewind\\SMB\\NativeWriteStream' => $vendorDir . '/icewind/smb/src/NativeWriteStream.php',
     'Icewind\\SMB\\NotifyHandler' => $vendorDir . '/icewind/smb/src/NotifyHandler.php',
     'Icewind\\SMB\\Parser' => $vendorDir . '/icewind/smb/src/Parser.php',
     'Icewind\\SMB\\RawConnection' => $vendorDir . '/icewind/smb/src/RawConnection.php',
diff --git a/apps/files_external/3rdparty/composer/autoload_static.php b/apps/files_external/3rdparty/composer/autoload_static.php
index c1a3a0492d..459de971c4 100644
--- a/apps/files_external/3rdparty/composer/autoload_static.php
+++ b/apps/files_external/3rdparty/composer/autoload_static.php
@@ -66,10 +66,12 @@ class ComposerStaticInit98fe9b281934250b3a93f69a5ce843b3
         'Icewind\\SMB\\INotifyHandler' => __DIR__ . '/..' . '/icewind/smb/src/INotifyHandler.php',
         'Icewind\\SMB\\IShare' => __DIR__ . '/..' . '/icewind/smb/src/IShare.php',
         'Icewind\\SMB\\NativeFileInfo' => __DIR__ . '/..' . '/icewind/smb/src/NativeFileInfo.php',
+        'Icewind\\SMB\\NativeReadStream' => __DIR__ . '/..' . '/icewind/smb/src/NativeReadStream.php',
         'Icewind\\SMB\\NativeServer' => __DIR__ . '/..' . '/icewind/smb/src/NativeServer.php',
         'Icewind\\SMB\\NativeShare' => __DIR__ . '/..' . '/icewind/smb/src/NativeShare.php',
         'Icewind\\SMB\\NativeState' => __DIR__ . '/..' . '/icewind/smb/src/NativeState.php',
         'Icewind\\SMB\\NativeStream' => __DIR__ . '/..' . '/icewind/smb/src/NativeStream.php',
+        'Icewind\\SMB\\NativeWriteStream' => __DIR__ . '/..' . '/icewind/smb/src/NativeWriteStream.php',
         'Icewind\\SMB\\NotifyHandler' => __DIR__ . '/..' . '/icewind/smb/src/NotifyHandler.php',
         'Icewind\\SMB\\Parser' => __DIR__ . '/..' . '/icewind/smb/src/Parser.php',
         'Icewind\\SMB\\RawConnection' => __DIR__ . '/..' . '/icewind/smb/src/RawConnection.php',
diff --git a/apps/files_external/3rdparty/composer/installed.json b/apps/files_external/3rdparty/composer/installed.json
index 8e065858d0..aafe1591fa 100644
--- a/apps/files_external/3rdparty/composer/installed.json
+++ b/apps/files_external/3rdparty/composer/installed.json
@@ -1,47 +1,4 @@
 [
-    {
-        "name": "icewind/smb",
-        "version": "v2.0.0",
-        "version_normalized": "2.0.0.0",
-        "source": {
-            "type": "git",
-            "url": "https://github.com/icewind1991/SMB.git",
-            "reference": "95a5ecbaf92617f9800ad7d6070ef31d8ff28c3a"
-        },
-        "dist": {
-            "type": "zip",
-            "url": "https://api.github.com/repos/icewind1991/SMB/zipball/95a5ecbaf92617f9800ad7d6070ef31d8ff28c3a",
-            "reference": "95a5ecbaf92617f9800ad7d6070ef31d8ff28c3a",
-            "shasum": ""
-        },
-        "require": {
-            "icewind/streams": ">=0.2.0",
-            "php": ">=5.4"
-        },
-        "require-dev": {
-            "phpunit/phpunit": "^4.8"
-        },
-        "time": "2016-12-13T13:56:55+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",
@@ -84,5 +41,48 @@
             }
         ],
         "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/NativeReadStream.php b/apps/files_external/3rdparty/icewind/smb/src/NativeReadStream.php
new file mode 100644
index 0000000000..6fd4f5b7f3
--- /dev/null
+++ b/apps/files_external/3rdparty/icewind/smb/src/NativeReadStream.php
@@ -0,0 +1,101 @@
+<?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;
+
+/**
+ * Stream optimized for read only usage
+ */
+class NativeReadStream extends NativeStream {
+	const CHUNK_SIZE = 1048576; // 1MB chunks
+	/**
+	 * @var resource
+	 */
+	private $readBuffer = null;
+
+	private $bufferSize = 0;
+
+	private $pos = 0;
+
+	public function stream_open($path, $mode, $options, &$opened_path) {
+		$this->readBuffer = fopen('php://memory', 'r+');
+
+		return parent::stream_open($path, $mode, $options, $opened_path);
+
+	}
+
+	/**
+	 * Wrap a stream from libsmbclient-php into a regular php stream
+	 *
+	 * @param \Icewind\SMB\NativeState $state
+	 * @param resource $smbStream
+	 * @param string $mode
+	 * @param string $url
+	 * @return resource
+	 */
+	public static function wrap($state, $smbStream, $mode, $url) {
+		stream_wrapper_register('nativesmb', '\Icewind\SMB\NativeReadStream');
+		$context = stream_context_create(array(
+			'nativesmb' => array(
+				'state'  => $state,
+				'handle' => $smbStream,
+				'url'    => $url
+			)
+		));
+		$fh = fopen('nativesmb://', $mode, false, $context);
+		stream_wrapper_unregister('nativesmb');
+		return $fh;
+	}
+
+	public function stream_read($count) {
+		// php reads 8192 bytes at once
+		// however due to network latency etc, it's faster to read in larger chunks
+		// and buffer the result
+		if (!parent::stream_eof() && $this->bufferSize < $count) {
+			$remaining = $this->readBuffer;
+			$this->readBuffer = fopen('php://memory', 'r+');
+			$this->bufferSize = 0;
+			stream_copy_to_stream($remaining, $this->readBuffer);
+			$this->bufferSize += fwrite($this->readBuffer, parent::stream_read(self::CHUNK_SIZE));
+			fseek($this->readBuffer, 0);
+		}
+
+		$result = fread($this->readBuffer, $count);
+		$this->bufferSize -= $count;
+
+		$read = strlen($result);
+		$this->pos += $read;
+
+		return $result;
+	}
+
+	public function stream_seek($offset, $whence = SEEK_SET) {
+		$result = parent::stream_seek($offset, $whence);
+		if ($result) {
+			$this->readBuffer = fopen('php://memory', 'r+');
+			$this->bufferSize = 0;
+			$this->pos = parent::stream_tell();
+		}
+		return $result;
+	}
+
+	public function stream_eof() {
+		return $this->bufferSize <= 0 && parent::stream_eof();
+	}
+
+	public function stream_tell() {
+		return $this->pos;
+	}
+
+	public function stream_write($data) {
+		return false;
+	}
+
+	public function stream_truncate($size) {
+		return false;
+	}
+}
diff --git a/apps/files_external/3rdparty/icewind/smb/src/NativeShare.php b/apps/files_external/3rdparty/icewind/smb/src/NativeShare.php
index 7efa34df37..228d9cd7d2 100644
--- a/apps/files_external/3rdparty/icewind/smb/src/NativeShare.php
+++ b/apps/files_external/3rdparty/icewind/smb/src/NativeShare.php
@@ -174,7 +174,7 @@ class NativeShare extends AbstractShare {
 		$sourceHandle = fopen($source, 'rb');
 		$targetHandle = $this->state->create($this->buildUrl($target));
 
-		while ($data = fread($sourceHandle, 4096)) {
+		while ($data = fread($sourceHandle, NativeReadStream::CHUNK_SIZE)) {
 			$this->state->write($targetHandle, $data);
 		}
 		$this->state->close($targetHandle);
@@ -214,7 +214,7 @@ class NativeShare extends AbstractShare {
 			throw new InvalidResourceException('Failed opening remote file "' . $source . '" for reading');
 		}
 
-		while ($data = $this->state->read($sourceHandle, 4096)) {
+		while ($data = $this->state->read($sourceHandle, NativeReadStream::CHUNK_SIZE)) {
 			fwrite($targetHandle, $data);
 		}
 		$this->state->close($sourceHandle);
@@ -233,7 +233,7 @@ class NativeShare extends AbstractShare {
 	public function read($source) {
 		$url = $this->buildUrl($source);
 		$handle = $this->state->open($url, 'r');
-		return NativeStream::wrap($this->state, $handle, 'r', $url);
+		return NativeReadStream::wrap($this->state, $handle, 'r', $url);
 	}
 
 	/**
@@ -248,7 +248,7 @@ class NativeShare extends AbstractShare {
 	public function write($source) {
 		$url = $this->buildUrl($source);
 		$handle = $this->state->create($url);
-		return NativeStream::wrap($this->state, $handle, 'w', $url);
+		return NativeWriteStream::wrap($this->state, $handle, 'w', $url);
 	}
 
 	/**
diff --git a/apps/files_external/3rdparty/icewind/smb/src/NativeStream.php b/apps/files_external/3rdparty/icewind/smb/src/NativeStream.php
index 481395b025..bce72001b5 100644
--- a/apps/files_external/3rdparty/icewind/smb/src/NativeStream.php
+++ b/apps/files_external/3rdparty/icewind/smb/src/NativeStream.php
@@ -20,22 +20,22 @@ class NativeStream implements File {
 	/**
 	 * @var \Icewind\SMB\NativeState
 	 */
-	private $state;
+	protected $state;
 
 	/**
 	 * @var resource
 	 */
-	private $handle;
+	protected $handle;
 
 	/**
 	 * @var bool
 	 */
-	private $eof = false;
+	protected $eof = false;
 
 	/**
 	 * @var string
 	 */
-	private $url;
+	protected $url;
 
 	/**
 	 * Wrap a stream from libsmbclient-php into a regular php stream
@@ -50,9 +50,9 @@ class NativeStream implements File {
 		stream_wrapper_register('nativesmb', '\Icewind\SMB\NativeStream');
 		$context = stream_context_create(array(
 			'nativesmb' => array(
-				'state' => $state,
+				'state'  => $state,
 				'handle' => $smbStream,
-				'url' => $url
+				'url'    => $url
 			)
 		));
 		$fh = fopen('nativesmb://', $mode, false, $context);
diff --git a/apps/files_external/3rdparty/icewind/smb/src/NativeWriteStream.php b/apps/files_external/3rdparty/icewind/smb/src/NativeWriteStream.php
new file mode 100644
index 0000000000..69a270f160
--- /dev/null
+++ b/apps/files_external/3rdparty/icewind/smb/src/NativeWriteStream.php
@@ -0,0 +1,100 @@
+<?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;
+
+/**
+ * Stream optimized for write only usage
+ */
+class NativeWriteStream extends NativeStream {
+	const CHUNK_SIZE = 1048576; // 1MB chunks
+	/**
+	 * @var resource
+	 */
+	private $writeBuffer = null;
+
+	private $bufferSize = 0;
+
+	private $pos = 0;
+
+	public function stream_open($path, $mode, $options, &$opened_path) {
+		$this->writeBuffer = fopen('php://memory', 'r+');
+
+		return parent::stream_open($path, $mode, $options, $opened_path);
+
+	}
+
+	/**
+	 * Wrap a stream from libsmbclient-php into a regular php stream
+	 *
+	 * @param \Icewind\SMB\NativeState $state
+	 * @param resource $smbStream
+	 * @param string $mode
+	 * @param string $url
+	 * @return resource
+	 */
+	public static function wrap($state, $smbStream, $mode, $url) {
+		stream_wrapper_register('nativesmb', '\Icewind\SMB\NativeWriteStream');
+		$context = stream_context_create(array(
+			'nativesmb' => array(
+				'state'  => $state,
+				'handle' => $smbStream,
+				'url'    => $url
+			)
+		));
+		$fh = fopen('nativesmb://', $mode, false, $context);
+		stream_wrapper_unregister('nativesmb');
+		return $fh;
+	}
+
+	public function stream_seek($offset, $whence = SEEK_SET) {
+		$this->flushWrite();
+		$result = parent::stream_seek($offset, $whence);
+		if ($result) {
+			$this->pos = parent::stream_tell();
+		}
+		return $result;
+	}
+
+	private function flushWrite() {
+		rewind($this->writeBuffer);
+		$this->state->write($this->handle, stream_get_contents($this->writeBuffer));
+		$this->writeBuffer = fopen('php://memory', 'r+');
+		$this->bufferSize = 0;
+	}
+
+	public function stream_write($data) {
+		$written = fwrite($this->writeBuffer, $data);
+		$this->bufferSize += $written;
+		$this->pos += $written;
+
+		if ($this->bufferSize >= self::CHUNK_SIZE) {
+			$this->flushWrite();
+		}
+
+		return $written;
+	}
+
+	public function stream_close() {
+		$this->flushWrite();
+		return parent::stream_close();
+	}
+
+	public function stream_tell() {
+		return $this->pos;
+	}
+
+	public function stream_read($count) {
+		return false;
+	}
+
+	public function stream_truncate($size) {
+		$this->flushWrite();
+		$this->pos = $size;
+		return parent::stream_truncate($size);
+	}
+}
diff --git a/apps/files_external/3rdparty/icewind/smb/src/NotifyHandler.php b/apps/files_external/3rdparty/icewind/smb/src/NotifyHandler.php
index 194e848502..6ad565555b 100644
--- a/apps/files_external/3rdparty/icewind/smb/src/NotifyHandler.php
+++ b/apps/files_external/3rdparty/icewind/smb/src/NotifyHandler.php
@@ -59,7 +59,10 @@ class NotifyHandler implements INotifyHandler {
 	public function listen($callback) {
 		if ($this->listening) {
 			$this->connection->read(function ($line) use ($callback) {
-				return $callback($this->parseChangeLine($line));
+				$change = $this->parseChangeLine($line);
+				if ($change) {
+					return $callback($change);
+				}
 			});
 		}
 	}