Dropbox provider bug fixes

- ExtendedFileProvider protocol is implemented for Dropbox
-

FileProvider.podspec

@@ -16,8 +16,8 @@ Pod::Spec.new do |s|
   #
 
   s.name         = "FileProvider"
-  s.version      = "0.1.0"
-  s.summary      = "Extended Local/WebDAV/SMB/CIFS/etc. File Manager for Swift on iOS and MacOS."
+  s.version      = "0.4.1"
+  s.summary      = "NSFileManager replacement for Local and Remote (WebDAV/Dropbox/SMB2) files on iOS and MacOS."
 
   # This description is used to generate tags and improve search results.
   #   * Think: What does it do? Why did you write it? What is the focus?
@@ -67,13 +67,13 @@ Pod::Spec.new do |s|
   #
 
   # s.platform     = :ios
-  # s.platform     = :ios, "7.0"
+  # s.platform     = :ios, "8.0"
 
   #  When using multiple platforms
   s.ios.deployment_target = "8.0"
   s.osx.deployment_target = "10.10"
   # s.watchos.deployment_target = "2.0"
-  # s.tvos.deployment_target = "9.0"
+  s.tvos.deployment_target = "9.0"
 
 
   # ――― Source Location ―――――――――――――――――――――――――――――――――――――――――――――――――――――――――― #
@@ -93,8 +93,8 @@ Pod::Spec.new do |s|
   #  Not including the public_header_files will make all headers public.
   #
 
-  s.source_files  = "Source/*.swift"
-  s.exclude_files = "Source/Exclude"
+  s.source_files  = "Sources/**/*.swift"
+  s.exclude_files = "Sources/Exclude"
 
   # s.public_header_files = "Classes/**/*.h"
 

FileProvider.xcodeproj/project.pbxproj

@@ -0,0 +1,828 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 46;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		794C21FE1D58912A00EC49B8 /* DropboxHelper.swift in Sources */ = {isa = PBXBuildFile; fileRef = 794C21FD1D58912A00EC49B8 /* DropboxHelper.swift */; };
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+		794C220A1D5893F800EC49B8 /* SMB2Notification.swift in Sources */ = {isa = PBXBuildFile; fileRef = 794C22091D5893F800EC49B8 /* SMB2Notification.swift */; };
+		794C220B1D5893F800EC49B8 /* SMB2Notification.swift in Sources */ = {isa = PBXBuildFile; fileRef = 794C22091D5893F800EC49B8 /* SMB2Notification.swift */; };
+		794C220C1D5893F800EC49B8 /* SMB2Notification.swift in Sources */ = {isa = PBXBuildFile; fileRef = 794C22091D5893F800EC49B8 /* SMB2Notification.swift */; };
+		794C220E1D591A4B00EC49B8 /* SMB2QueryTypes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 794C220D1D591A4B00EC49B8 /* SMB2QueryTypes.swift */; };
+		794C220F1D591A4B00EC49B8 /* SMB2QueryTypes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 794C220D1D591A4B00EC49B8 /* SMB2QueryTypes.swift */; };
+		794C22101D591A4B00EC49B8 /* SMB2QueryTypes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 794C220D1D591A4B00EC49B8 /* SMB2QueryTypes.swift */; };
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+				ENABLE_TESTABILITY = YES;
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+				GCC_PREPROCESSOR_DEFINITIONS = (
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+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
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+				GCC_WARN_UNUSED_VARIABLE = YES;
+				INFOPLIST_FILE = "Pod/Info-tvOS.plist";
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+				SKIP_INSTALL = YES;
+				TARGETED_DEVICE_FAMILY = 3;
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+
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+			defaultConfigurationName = Release;
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+		7993966F1D48B7F600086753 /* Build configuration list for PBXNativeTarget "FileProvider iOS" */ = {
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+			buildConfigurations = (
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+				7993966E1D48B7F600086753 /* Release */,
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+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		7993967A1D48B80D00086753 /* Build configuration list for PBXNativeTarget "FileProvider OSX" */ = {
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+			buildConfigurations = (
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+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		799396871D48B82700086753 /* Build configuration list for PBXNativeTarget "FileProvider tvOS" */ = {
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+			buildConfigurations = (
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+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 7993965C1D48B7BF00086753 /* Project object */;
+}

FileProvider.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:FileProvider.xcodeproj">
+   </FileRef>
+</Workspace>

FileProvider.xcodeproj/xcshareddata/xcschemes/FileProvider OSX.xcscheme

@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0730"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "799396741D48B80D00086753"
+               BuildableName = "FileProvider.framework"
+               BlueprintName = "FileProvider OSX"
+               ReferencedContainer = "container:FileProvider.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
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+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "799396741D48B80D00086753"
+            BuildableName = "FileProvider.framework"
+            BlueprintName = "FileProvider OSX"
+            ReferencedContainer = "container:FileProvider.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "799396741D48B80D00086753"
+            BuildableName = "FileProvider.framework"
+            BlueprintName = "FileProvider OSX"
+            ReferencedContainer = "container:FileProvider.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

FileProvider.xcodeproj/xcshareddata/xcschemes/FileProvider iOS.xcscheme

@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0730"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "799396661D48B7F600086753"
+               BuildableName = "FileProvider.framework"
+               BlueprintName = "FileProvider iOS"
+               ReferencedContainer = "container:FileProvider.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "799396661D48B7F600086753"
+            BuildableName = "FileProvider.framework"
+            BlueprintName = "FileProvider iOS"
+            ReferencedContainer = "container:FileProvider.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "799396661D48B7F600086753"
+            BuildableName = "FileProvider.framework"
+            BlueprintName = "FileProvider iOS"
+            ReferencedContainer = "container:FileProvider.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
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+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
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+</Scheme>

FileProvider.xcodeproj/xcshareddata/xcschemes/FileProvider tvOS.xcscheme

@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0730"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "799396811D48B82700086753"
+               BuildableName = "FileProvider.framework"
+               BlueprintName = "FileProvider tvOS"
+               ReferencedContainer = "container:FileProvider.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "799396811D48B82700086753"
+            BuildableName = "FileProvider.framework"
+            BlueprintName = "FileProvider tvOS"
+            ReferencedContainer = "container:FileProvider.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "799396811D48B82700086753"
+            BuildableName = "FileProvider.framework"
+            BlueprintName = "FileProvider tvOS"
+            ReferencedContainer = "container:FileProvider.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

Pod/Info-MacOS.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CFBundleShortVersionString</key>
+	<string>0.3.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>NSPrincipalClass</key>
+	<string></string>
+</dict>
+</plist>

Pod/Info-iOS.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CFBundleShortVersionString</key>
+	<string>0.3.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>NSPrincipalClass</key>
+	<string></string>
+</dict>
+</plist>

Pod/Info-tvOS.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CFBundleShortVersionString</key>
+	<string>0.3.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>NSPrincipalClass</key>
+	<string></string>
+</dict>
+</plist>

README.md

@@ -1,46 +1,50 @@
 # FileProvider (experimental)
 
->This Swift library provide a swifty way to deal with local and remote files and directories in same way.
+>This Swift library provide a swifty way to deal with local and remote files and directories in a unified way.
 
 [![Swift Version][swift-image]][swift-url]
 [![License][license-image]][license-url]
 [![Platform](https://img.shields.io/badge/Platform-iOS%2C%20OSX-lightgray.svg)]()
-[![codebeat badge](https://codebeat.co/badges/7b359f48-78eb-4647-ab22-56262a827517)](https://codebeat.co/projects/github-com-amosavian-fileprovider)
+[![CocoaPods Compatible](https://img.shields.io/cocoapods/v/FileProvider.svg)](https://img.shields.io/cocoapods/v/FileProvider.svg)
+[![codebeat badge][codebeat-image]][codebeat-url]
 
 <!--- 
 [![Build Status][travis-image]][travis-url]
-[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
-[![CocoaPods Compatible](https://img.shields.io/cocoapods/v/EZSwiftExtensions.svg)](https://img.shields.io/cocoapods/v/LFAlertController.svg) 
+[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage) 
 ---> 
 
-
-
 This library provides implementaion of WebDav and SMB/CIFS (incomplete) and local files.
 
 All functions are async calls and it wont block your main thread.
 
+Local and WebDAV providers are fully tested and can be used in production environment.
+
 ## Features
 
-- [x] **LocalFileProvider** a wrapper for `NSFileManager` with some additions like searching and reading a portion of file
-- [x] **WebDAVFileProvider** WebDAV protocol is usual file transmission system on Macs
-- [ ] **SMBFileProvider** SMB/CIFS and SMB2/3 are file and printer sharing protocol which is originated from IBM & Microsoft and SMB2/3 is now replacing AFP protocol on MacOS. I Implemented data types and some basic functions but *main interface is not implemented yet!*
-- [ ] **DropboxFileProvider**
-- [ ] **FTPFileProvider**
-- [ ] **AmazonS3FileProvider**
+- [x] **LocalFileProvider** a wrapper around `NSFileManager` with some additions like searching and reading a portion of file.
+- [x] **WebDAVFileProvider** WebDAV protocol is defacto file transmission protocol standard, replaced FTP.
+- [x] **DropboxFileProvider** A wrapper around Dropbox Web API. For now it has limitation in uploading files up to 150MB.
+- [ ] **SMBFileProvider** SMB2/3 introduced in 2006, which is a file and printer sharing protocol originated from Microsoft Windows and now is replacing AFP protocol on MacOS. I implemented data types and some basic functions but *main interface is not implemented yet!*. SMB1/CIFS is depericated and very tricky to be implemented
+- [ ] **FTPFileProvider** while depericated in 1990s, it's still in use on some Web hosts.
+- [ ] **AmazonS3FileProvider** 
 
 ## Requirements
 
-- **Swift 2.2**
-- iOS 7.0 , OSX 10.9
+- **Swift 2.2 or 2.3**
+- iOS 8.0 , OSX 10.10
 - XCode 7.3
 
 ## Installation
 
 ### Cocoapods / Carthage / Swift Package Manager
 
-I will add when project is completed is ready to use in production envioronment
+FileProvider supports both CocoaPods. 
 
-### Git clone
+Add this line to your pods file:
+
+	pod "FileProvider"
+
+### Git
 To have latest updates with ease, use this command on terminal to get a clone:
 
 	git clone https://github.com/amosavian/FileProvider FileProvider
@@ -49,13 +53,12 @@ You can update your library using this command in FileProvider folder:
 
 	git pull
 
-### Submodule into your project
-if you have a git based project, use this command in your projects directory:
+if you have a git based project, use this command in your projects directory to add this project as a submodule to your project:
 
 	git submodule add https://github.com/amosavian/FileProvider FileProvider
 
 ### Manually
-Copy Source folder to your project and voila!
+Copy Source folder to your project and Voila!
 
 ## Usage
 
@@ -65,24 +68,30 @@ Each provider has a specific class which conforms to FileProvider protocol and s
 
 For LocalFileProvider if you want to deal with `Documents` folder
 
-	let documentsFileProvider = LocalFileProvider()
+	let documentsProvider = LocalFileProvider()
 
 is equal to:
 	    
 	let documentPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true);
 	let documentsURL = NSURL(fileURLWithPath: documentPath);
-	let documentsFileProvider = LocalFileProvider(baseURL: documentsURL)
+	let documentsProvider = LocalFileProvider(baseURL: documentsURL)
 
 You can't change the base url later. and all paths are related to this base url by default.
 
 For remote file providers authentication may be necessary:
 
 	let credential = NSURLCredential(user: "user", password: "pass", persistence: NSURLCredentialPersistence.Permanent)
-	let webdavProvider = WebDAVFileProvider(baseURL: "http://www.example.com/dav", credential: credential)
+	let webdavProvider = WebDAVFileProvider(baseURL: NSURL(string: "http://www.example.com/dav")!, credential: credential)
+
+* In case you want to connect non-secure servers for WebDAV (http) in iOS 9+ / macOS 10.11+ you should disable App Transport Security (ATS) according to [this guide.](https://gist.github.com/mlynch/284699d676fe9ed0abfa)
+
+* For Dropbox, user is clientID and password is Token which both must be retrieved via [OAuth2 API of Dropbox](https://www.dropbox.com/developers/reference/oauth-guide). There are libraries like [p2/OAuth2](https://github.com/p2/OAuth2) or [OAuthSwift](https://github.com/OAuthSwift/OAuthSwift) which can facilate the procedure to retrieve token.
 	
 For interaction with UI, set delegate variable of `FileProvider` object
 
-### Delegate
+You can use `absoluteURL()` method if provider to get direct access url (local or remote files) for some file systems which allows to do so (Dropbox doesn't support and returns path simply)
+
+### Delegates
 
 For updating User interface please consider using delegate method instead of completion handlers. Delegate methods are guaranteed to run in main thread to avoid bugs.
 
@@ -91,10 +100,10 @@ It's simply tree method which indicated whether the operation failed, succeed an
 Your class should conforms `FileProviderDelegate` class:
 
 	override func viewDidLoad() {
-		documentsFileProvider.delegate = self
+		documentsProvider.delegate = self
 	}
 	
-	func fileproviderSucceed(fileProvider: FileProvider, operation: FileOperation) {
+	func fileproviderSucceed(fileProvider: FileProviderOperations, operation: FileOperation) {
 		switch operation {
 		case .Copy(source: let source, destination: let dest):
 			NSLog("\(source) copied to \(dest).")
@@ -105,7 +114,7 @@ Your class should conforms `FileProviderDelegate` class:
 		}
 	}
 	
-    func fileproviderFailed(fileProvider: FileProvider, operation: FileOperation) {
+    func fileproviderFailed(fileProvider: FileProviderOperations, operation: FileOperation) {
     	switch operation {
 		case .Copy(source: let source, destination: let dest):
 			NSLog("copy of \(source) failed.")
@@ -116,7 +125,7 @@ Your class should conforms `FileProviderDelegate` class:
 		}
     }
 	
-    func fileproviderProgress(fileProvider: FileProvider, operation: FileOperation, progress: Float) {
+    func fileproviderProgress(fileProvider: FileProviderOperations, operation: FileOperation, progress: Float) {
 		switch operation {
 		case .Copy(source: let source, destination: let dest):
 			NSLog("Copy\(source) to \(dest): \(progress * 100) completed.")
@@ -125,70 +134,98 @@ Your class should conforms `FileProviderDelegate` class:
 		}
 	}
 
+**Note:** `fileproviderProgress()` delegate method is not called by `LocalFileProvider`. 
 
-Use completion handlers for error handling or result processing as far as possible.
+It's recommended to use completion handlers for error handling or result processing.
+
+#### Controlling file operations
+
+You can also implement `FileOperationDelegate` protocol to control behaviour of file operation (copy, move/rename, remove and linking), and decide which files should be removed for example and which won't. 
+
+`fileProvider:shouldDoOperation:` method is called before doing a operation. You sould return `true` if you want to do operation or `false` if you want to stop that operation.
+
+`fileProvider:shouldProceedAfterError:operation:` will be called if an error occured during file operations. Return `true` if you want to continue operation on next files or `false` if you want stop operation further. Default value is false if you don't implement delegate.
+
+**Note: these methods will be called for files in a directory and its subfolders recursively.**
 
 ### Directory contents and file attributes
 
-There is a `FileObject` class which holds file attributes like size and creation date. You can retrieve information of files inside a directory or get information of a file directly
+There is a `FileObject` class which holds file attributes like size and creation date. You can retrieve information of files inside a directory or get information of a file directly.
 
-	documentsFileProvider.attributesOfItemAtPath(path: "/file.txt", completionHandler: {
-	    (attributes: LocalFileObject?, error: ErrorType?) -> Void} in
+For a single file:
+
+	documentsProvider.attributesOfItemAtPath(path: "/file.txt", completionHandler: {
+	    (attributes: LocalFileObject?, error: ErrorType?) -> Void in
 		if let attributes = attributes {
 			print("File Size: \(attributes.size)")
 			print("Creation Date: \(attributes.createdDate)")
 			print("Modification Date: \(modifiedDate)")
 			print("Is Read Only: \(isReadOnly)")
 		}
-	)
+	})
 
-	documentsFileProvider.contentsOfDirectoryAtPath(path: "/", 	completionHandler: {
-	    (contents: [LocalFileObject], error: ErrorType?) -> Void} in
+To get list of files in a directory:
+
+	documentsProvider.contentsOfDirectoryAtPath(path: "/", 	completionHandler: {
+	    (contents: [LocalFileObject], error: ErrorType?) -> Void in
 		for file in contents {
 			print("Name: \(attributes.name)")
 			print("Size: \(attributes.size)")
 			print("Creation Date: \(attributes.createdDate)")
 			print("Modification Date: \(modifiedDate)")
 		}
-	)
+	})
+
+To get size of strage and used/free space:
+
+	func storageProperties(completionHandler: {(total: Int64, used: Int64) -> Void in
+	    print("Total Storage Space: \(total)")
+	    print("Used Space: \(used)")
+	    print("Free Space: \(total - frees)")
+	})
+	
+* if this function is unavailable on provider or an error has been occurred, total space will be reported "-1" and used space "0"
 
 ### Change current directory
 
-	documentsFileProvider.currentPath = "/New Folder"
+	documentsProvider.currentPath = "/New Folder"
 	// now path is ~/Documents/New Folder
+	
+You can then pass "" (empty string) to contentsOfDirectoryAtPath method to list files in current directory.
 
 ### Creating File and Folders
 
 Creating new directory:
 
-	documentsFileProvider.createFolder(folderName: "new folder", atPath: "/", completionHandler: nil)
+	documentsProvider.createFolder(folderName: "new folder", atPath: "/", completionHandler: nil)
 
 Creating new file from data stream:
 
 	let data = "hello world!".dataUsingEncoding(NSUTF8StringEncoding)
 	let file = FileObject(name: "old.txt", createdDate: NSDate(), modifiedDate: NSDate(), isHidden: false, isReadOnly: true)
-	documentsFileProvider.createFile(fileAttribs: file, atPath: "/", contents: data, completionHandler: nil)
+	documentsProvider.createFile(fileAttribs: file, atPath: "/", contents: data, completionHandler: nil)
 
 ### Copy and Move/Rename Files
 
-	// Copy file old.txt to new.txt in current path
-	documentsFileProvider.copyItemAtPath(path: "new folder/old.txt", toPath: "new.txt", overwrite: false, completionHandler: nil)
+Copy file old.txt to new.txt in current path:
 
-	// Move file old.txt to new.txt in current path
-	documentsFileProvider.moveItemAtPath(path: "new folder/old.txt", toPath: "new.txt", overwrite: false, completionHandler: nil)
+	documentsProvider.copyItemAtPath(path: "new folder/old.txt", toPath: "new.txt", overwrite: false, completionHandler: nil)
+
+Move file old.txt to new.txt in current path:
+
+	documentsProvider.moveItemAtPath(path: "new folder/old.txt", toPath: "new.txt", overwrite: false, completionHandler: nil)
 
 ### Delete Files
 
-	documentsFileProvider.removeItemAtPath(path: "new.txt", completionHandler: nil)
-
-***Caution:*** This method will not delete directories with content.
+	documentsProvider.removeItemAtPath(path: "new.txt", completionHandler: nil)
 
+***Caution:*** This method will delete directories with all it's content recursively.
 
 ### Retrieve Content of File
 
-THere is two method for this purpose, one of them loads entire file into NSData and another can load a portion of file.
+There is two method for this purpose, one of them loads entire file into NSData and another can load a portion of file.
 
-	documentsFileProvider.contentsAtPath(path: "old.txt:, completionHandler: {
+	documentsProvider.contentsAtPath(path: "old.txt", completionHandler: {
 		(contents: NSData?, error: ErrorType?) -> Void
 		if let contents = contents {
 			print(String(data: contents, encoding: NSUTF8StringEncoding)) // "hello world!"
@@ -197,7 +234,7 @@ THere is two method for this purpose, one of them loads entire file into NSData
 	
 If you want to retrieve a portion of file you should can `contentsAtPath` method with offset and length arguments. Please note first byte of file has offset: 0.
 
-	documentsFileProvider.contentsAtPath(path: "old.txt", offset: 2, length: 5, completionHandler: {
+	documentsProvider.contentsAtPath(path: "old.txt", offset: 2, length: 5, completionHandler: {
 		(contents: NSData?, error: ErrorType?) -> Void
 		if let contents = contents {
 			print(String(data: contents, encoding: NSUTF8StringEncoding)) // "llo w"
@@ -207,31 +244,50 @@ If you want to retrieve a portion of file you should can `contentsAtPath` method
 ### Write Data To Files
 
 	let data = "What's up Newyork!".dataUsingEncoding(NSUTF8StringEncoding)
-	documentsFileProvider.writeContentsAtPath(path: "old.txt", contents data: data, atomically: true, completionHandler: nil)
+	documentsProvider.writeContentsAtPath(path: "old.txt", contents data: data, atomically: true, completionHandler: nil)
 
 ### Monitoring FIle Changes
 
+You can monitor updates in some file system (Local and SMB2), there is three methods in supporting provider you can use to register a handler, to unregister and to check whether it's being monitored or not. It's useful to find out when new files added or removed from directory and update user interface. The handler will be dispatched to main threads to avoid UI bugs with a 0.25 sec delay.
+
+	documentsProvider.registerNotifcation(provider.currentPath)
+	{
+		// calling functions to update UI 
+	}
+	
+	// To discontinue monitoring folders:
+	documentsProvider.unregisterNotifcation(provider.currentPath)
+
+* **Please note** in LocalFileProvider it will also monitor changes in subfolders. This behaviour can varies according to file system specification.
+
 ## Contribute
 
 We would love for you to contribute to **FileProvider**, check the `LICENSE` file for more info.
 
+## Projects in use
+
+* [EDM - Browse and Receive Files](https://itunes.apple.com/us/app/edm-browse-and-receive-files/id948397575?ls=1&mt=8)
+* [File Manager - PDF Reader & Music Player](https://itunes.apple.com/us/app/file-manager-pdf-reader-music/id1017809685?ls=1&mt=8)
+
+If you used this library in your project, you can open an issue to inform us.
+
 ## Meta
 
-Amir-Abbas Mousavia  – [@amosavian](https://twitter.com/amosavian)
+Amir-Abbas Mousavian  – [@amosavian](https://twitter.com/amosavian)
 
 Distributed under the MIT license. See `LICENSE` for more information.
 
 [https://github.com/yourname/github-link](https://github.com/dbader/)
 
-[swift-image]:https://img.shields.io/badge/swift-2.3-green.svg
+[swift-image]:https://img.shields.io/badge/swift-2.2%2C%202.3-green.svg
 [swift-url]: https://swift.org/
 [license-image]: https://img.shields.io/badge/License-MIT-blue.svg
 [license-url]: LICENSE
+[codebeat-image]: https://codebeat.co/badges/7b359f48-78eb-4647-ab22-56262a827517
+[codebeat-url]: https://codebeat.co/projects/github-com-amosavian-fileprovider
+
 
 <!---
 [travis-image]: https://img.shields.io/travis/dbader/node-datadog-metrics/master.svg?style=flat-square
 [travis-url]: https://travis-ci.org/dbader/node-datadog-metrics
---->
-
-[codebeat-image]: https://codebeat.co/badges/c19b47ea-2f9d-45df-8458-b2d952fe9dad
-[codebeat-url]: https://codebeat.co/projects/github-com-vsouza-awesomeios-com
+--->

Source/FileProvider.swift

@@ -1,248 +0,0 @@
-//
-//  FileProvider.swift
-//  FileProvider
-//
-//  Created by Amir Abbas Mousavian.
-//  Copyright © 2016 Mousavian. Distributed under MIT license.
-//
-
-import Foundation
-#if (iOS)
-import UIKit
-#endif
-#if (OSX)
-import AppKit
-#endif
-
-public enum FileType: String {
-    case Directory
-    case Regular
-    case SymbolicLink
-    case Socket
-    case CharacterSpecial
-    case BlockSpecial
-    case NamedPipe
-    case Unknown
-    
-    init(urlResourceTypeValue: String) {
-        switch urlResourceTypeValue {
-        case NSURLFileResourceTypeNamedPipe: self = .NamedPipe
-        case NSURLFileResourceTypeCharacterSpecial: self = .CharacterSpecial
-        case NSURLFileResourceTypeDirectory: self = .Directory
-        case NSURLFileResourceTypeBlockSpecial: self = .BlockSpecial
-        case NSURLFileResourceTypeRegular: self = .Regular
-        case NSURLFileResourceTypeSymbolicLink: self = .SymbolicLink
-        case NSURLFileResourceTypeSocket: self = .Socket
-        case NSURLFileResourceTypeUnknown: self = .Unknown
-        default: self = .Unknown
-        }
-    }
-    
-    init(fileTypeValue: String) {
-        switch fileTypeValue {
-        case NSFileTypeCharacterSpecial: self = .CharacterSpecial
-        case NSFileTypeDirectory: self = .Directory
-        case NSFileTypeBlockSpecial: self = .BlockSpecial
-        case NSFileTypeRegular: self = .Regular
-        case NSFileTypeSymbolicLink: self = .SymbolicLink
-        case NSFileTypeSocket: self = .Socket
-        case NSFileTypeUnknown: self = .Unknown
-        default: self = .Unknown
-        }
-    }
-}
-
-protocol FoundationErrorEnum {
-    init? (rawValue: Int)
-    var rawValue: Int { get }
-}
-
-extension NSURLError: FoundationErrorEnum {}
-extension NSCocoaError: FoundationErrorEnum {}
-
-public class FileObject {
-    let absoluteURL: NSURL?
-    let name: String
-    let size: Int64
-    let createdDate: NSDate?
-    let modifiedDate: NSDate?
-    let fileType: FileType
-    let isHidden: Bool
-    let isReadOnly: Bool
-    
-    init(absoluteURL: NSURL, name: String, size: Int64, createdDate: NSDate?, modifiedDate: NSDate?, fileType: FileType, isHidden: Bool, isReadOnly: Bool) {
-        self.absoluteURL = absoluteURL
-        self.name = name
-        self.size = size
-        self.createdDate = createdDate
-        self.modifiedDate = modifiedDate
-        self.fileType = fileType
-        self.isHidden = isHidden
-        self.isReadOnly = isReadOnly
-    }
-    
-    init(name: String, createdDate: NSDate?, modifiedDate: NSDate?, isHidden: Bool, isReadOnly: Bool) {
-        self.absoluteURL = NSURL()
-        self.name = name
-        self.size = -1
-        self.createdDate = createdDate
-        self.modifiedDate = modifiedDate
-        self.fileType = .Regular
-        self.isHidden = isHidden
-        self.isReadOnly = isReadOnly
-    }
-}
-
-
-public typealias SimpleCompletionHandler = ((error: ErrorType?) -> Void)?
-
-public protocol FileProviderBasic: class {
-    var type: String { get }
-    var isPathRelative: Bool { get }
-    var baseURL: NSURL? { get }
-    var currentPath: String { get set }
-    var dispatch_queue: dispatch_queue_t { get set }
-    var delegate: FileProviderDelegate? { get set }
-    var credential: NSURLCredential? { get }
-    
-    /**
-     *
-    */
-    func contentsOfDirectoryAtPath(path: String, completionHandler: ((contents: [FileObject], error: ErrorType?) -> Void))
-    func attributesOfItemAtPath(path: String, completionHandler: ((attributes: FileObject?, error: ErrorType?) -> Void))
-}
-
-public protocol FileProviderOperations: FileProviderBasic {
-    func createFolder(folderName: String, atPath: String, completionHandler: SimpleCompletionHandler)
-    func createFile(fileAttribs: FileObject, atPath: String, contents data: NSData?, completionHandler: SimpleCompletionHandler)
-    func moveItemAtPath(path: String, toPath: String, overwrite: Bool, completionHandler: SimpleCompletionHandler)
-    func copyItemAtPath(path: String, toPath: String, overwrite: Bool, completionHandler: SimpleCompletionHandler)
-    func removeItemAtPath(path: String, completionHandler: SimpleCompletionHandler)
-    
-    func copyLocalFileToPath(localFile: NSURL, toPath: String, completionHandler: SimpleCompletionHandler)
-    func copyPathToLocalFile(path: String, toLocalURL: NSURL, completionHandler: SimpleCompletionHandler)
-}
-
-public protocol FileProviderReadWrite: FileProviderBasic {
-    func contentsAtPath(path: String, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void))
-    func contentsAtPath(path: String, offset: Int64, length: Int, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void))
-    func writeContentsAtPath(path: String, contents data: NSData, atomically: Bool, completionHandler: SimpleCompletionHandler)
-    
-    func searchFilesAtPath(path: String, recursive: Bool, query: String, foundItemHandler: ((FileObject) -> Void)?, completionHandler: ((files: [FileObject], error: ErrorType?) -> Void))
-}
-
-public protocol FileProviderMonitor: FileProviderBasic {
-    func registerNotifcation(path: String, eventHandler: (() -> Void))
-    func unregisterNotifcation(path: String)
-}
-
-public protocol FileProvider: FileProviderBasic, FileProviderOperations, FileProviderReadWrite {
-    
-}
-
-extension FileProviderBasic {
-    var bareCurrentPath: String {
-        return currentPath.stringByTrimmingCharactersInSet(NSCharacterSet(charactersInString: ". /"))
-    }
-    
-    func absoluteURL(path: String? = nil) -> NSURL {
-        let rpath: String
-        if let path = path {
-            rpath = path
-        } else {
-            rpath = self.currentPath
-        }
-        if isPathRelative, let baseURL = baseURL {
-            if rpath.hasPrefix("/") && baseURL.absoluteString.hasSuffix("/") {
-                var npath = rpath
-                npath.removeAtIndex(npath.startIndex)
-                return baseURL.URLByAppendingPathComponent(npath)
-            } else {
-                return baseURL.URLByAppendingPathComponent(rpath)
-            }
-        } else {
-            return NSURL(fileURLWithPath: rpath)
-        }
-    }
-    
-    internal func throwError(path: String, code: FoundationErrorEnum) -> NSError {
-        let fileURL = self.absoluteURL(path)
-        let domain: String
-        switch code {
-        case is NSURLError:
-            domain = NSURLErrorDomain
-        default:
-            domain = NSCocoaErrorDomain
-        }
-        return NSError(domain: domain, code: code.rawValue, userInfo: [NSURLErrorFailingURLErrorKey: fileURL, NSURLErrorFailingURLStringErrorKey: fileURL.absoluteString])
-    }
-    
-    internal func NotImplemented() {
-        assert(false, "method not implemented")
-    }
-    
-    internal func resolveRFCDate(httpDateString: String) -> NSDate? {
-        let dateFor: NSDateFormatter = NSDateFormatter()
-        dateFor.locale = NSLocale(localeIdentifier: "en_US")
-        dateFor.dateFormat = "EEE',' dd' 'MMM' 'yyyy HH':'mm':'ss zzz"
-        if let rfc1123 = dateFor.dateFromString(httpDateString) {
-            return rfc1123
-        }
-        dateFor.dateFormat = "EEEE',' dd'-'MMM'-'yy HH':'mm':'ss z"
-        if let rfc850 = dateFor.dateFromString(httpDateString) {
-            return rfc850
-        }
-        dateFor.dateFormat = "EEE MMM d HH':'mm':'ss yyyy"
-        if let asctime = dateFor.dateFromString(httpDateString) {
-            return asctime
-        }
-        //self.init()
-        return nil
-    }
-    
-    internal func jsonToDictionary(jsonString: String) -> [String: AnyObject]? {
-        guard let data = jsonString.dataUsingEncoding(NSUTF8StringEncoding) else {
-            return nil
-        }
-        if let dic = try? NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions()) as? [String: AnyObject] {
-            return dic
-        }
-        return nil
-    }
-    
-    internal func dictionaryToJSON(dictionary: [String: AnyObject]) -> String? {
-        if let data = try? NSJSONSerialization.dataWithJSONObject(dictionary, options: NSJSONWritingOptions()) {
-            return String(data: data, encoding: NSUTF8StringEncoding)
-        }
-        return nil
-    }
-}
-
-#if (iOS)
-public protocol ExtendedFileProvider: FileProvider {
-    func thumbnailOfFileAtPath(path: String, dimension: CGSize, completionHandler: ((image: UIImage?, error: ErrorType?) -> Void))
-    func propertiesOfFileAtPath(path: String, completionHandler: ((propertiesDictionary: [String: AnyObject], keys: [String], error: ErrorType?) -> Void))
-}
-#elseif (OSX)
-public protocol ExtendedFileProvider: FileProvider {
-    func thumbnailOfFileAtPath(path: String, dimension: CGSize, completionHandler: ((image: NSImage?, error: ErrorType?) -> Void))
-    func propertiesOfFileAtPath(path: String, completionHandler: ((propertiesDictionary: [String: AnyObject], keys: [String], error: ErrorType?) -> Void))
-}
-#endif
-
-public enum FileOperation {
-    case Create (path: String)
-    case Copy   (source: String, destination: String)
-    case Move   (source: String, destination: String)
-    case Modify (path: String)
-    case Remove (path: String)
-    case Link   (link: String, target: String)
-}
-
-public protocol FileProviderDelegate {
-    func fileproviderSucceed(fileProvider: FileProviderOperations, operation: FileOperation)
-    func fileproviderFailed(fileProvider: FileProviderOperations, operation: FileOperation)
-    func fileproviderProgress(fileProvider: FileProviderOperations, operation: FileOperation, progress: Float)
-}
-
-

Source/SMBClient.swift

@@ -1,630 +0,0 @@
-//
-//  SMBTransmitter.swift
-//  FileProvider
-//
-//  Created by Amir Abbas Mousavian.
-//  Copyright © 2016 Mousavian. Distributed under MIT license.
-//
-
-import Foundation
-
-protocol SMBRequest {
-    func data() -> NSData
-}
-
-protocol SMBResponse {
-    init? (data: NSData)
-}
-
-internal func encode<T>(inout value: T) -> NSData {
-    return withUnsafePointer(&value) { p in
-        NSData(bytes: p, length: sizeofValue(value))
-    }
-}
-
-internal func decode<T>(data: NSData) -> T {
-    let pointer = UnsafeMutablePointer<T>.alloc(sizeof(T.Type))
-    data.getBytes(pointer, length: sizeof(T.Type))
-    
-    return pointer.move()
-}
-
-// This client implementation is for little-endian platform, namely x86, x64 & arm
-// For big-endian platforms like PowerPC, there must be a huge overhaul
-
-class SMBProtocolClient: TCPSocketClient {
-    var currentMessageID: UInt64 = 0
-    
-    func negotiateToSMB2() -> SMB2.NegotiateResponse? {
-        let smbHeader = SMB2.Header(command: .NEGOTIATE, creditRequestResponse: 126, messageId: messageId(), treeId: 0, sessionId: 0)
-        currentMessageID += 1
-        let negMessage = SMB2.NegotiateRequest(request: SMB2.NegotiateRequest.Header(capabilities: []))
-        SMBProtocolClient.createSMB2Message(smbHeader, message: negMessage)
-        do {
-            try self.send(data: nil)
-        } catch _ {
-            return nil
-        }
-        self.waitUntilResponse()
-        let response = try? SMBProtocolClient.digestSMB2Message(dataReceived)
-        return response??.message as? SMB2.NegotiateResponse
-    }
-    
-    func sessionSetupForSMB2() -> SMB2.SessionSetupResponse? {
-        return nil
-    }
-    
-    func messageId() -> UInt64 {
-        defer {
-            currentMessageID += 1
-        }
-        return currentMessageID
-    }
-    
-    // MARK: create and analyse messages
-    
-    class func determineSMBVersion(data: NSData) -> Float {
-        var smbverChar: Int8 = 0
-        data.getBytes(&smbverChar, length: 1)
-        let version = 0 - smbverChar
-        return Float(version)
-    }
-    
-    class func digestSMBMessage(data: NSData) throws -> (header: SMB1.Header, blocks: [(params: [UInt16], message: NSData?)]) {
-        guard data.length > 30 else {
-            throw NSURLError.BadServerResponse
-        }
-        var buffer = [UInt8](count: data.length, repeatedValue: 0)
-        guard determineSMBVersion(data) == 1 else {
-            throw SMBFileProviderError.IncompatibleHeader
-        }
-        let headersize = sizeof(SMB1.Header.self)
-        let header: SMB1.Header = decode(data)
-        var blocks = [(params: [UInt16], message: NSData?)]()
-        var offset = headersize
-        while offset < data.length {
-            let paramWords: [UInt16]
-            let paramWordsCount = Int(buffer[offset])
-            guard data.length > (paramWordsCount * 2 + offset) else {
-                throw SMBFileProviderError.IncorrectParamsLength
-            }
-            offset += sizeof(UInt8)
-            var rawParamWords = [UInt8](buffer[offset..<(offset + paramWordsCount * 2)])
-            let paramData = NSData(bytesNoCopy: &rawParamWords, length: rawParamWords.count)
-            paramWords = decode(paramData)
-            offset += paramWordsCount * 2
-            let messageBytesCountLittleEndian = [UInt8](buffer[offset...(offset + 1)])
-            let messageBytesCount = Int(UnsafePointer<UInt16>(messageBytesCountLittleEndian).memory)
-            offset += sizeof(UInt16)
-            guard data.length >= (offset + messageBytesCount) else {
-                throw SMBFileProviderError.IncorrectMessageLength
-            }
-            var rawMessage = [UInt8](buffer[offset..<(offset + messageBytesCount)])
-            offset += messageBytesCount
-            let message = NSData(bytes: &rawMessage, length: rawMessage.count)
-            blocks.append((params: paramWords, message: message))
-        }
-        return (header, blocks)
-    }
-    
-    class func digestSMB2Message(data: NSData) throws -> (header: SMB2.Header, message: SMBResponse?)? {
-        guard data.length > 65 else {
-            throw NSURLError.BadServerResponse
-        }
-        guard determineSMBVersion(data) == 2 else {
-            throw SMBFileProviderError.IncompatibleHeader
-        }
-        let headersize = sizeof(SMB2.Header.self)
-        let headerData = data.subdataWithRange(NSRange(location: 0, length: headersize))
-        let messageSize = data.length - headersize
-        let messageData = data.subdataWithRange(NSRange(location: headersize, length: messageSize))
-        let header: SMB2.Header = decode(headerData)
-        switch header.command {
-        case .NEGOTIATE:
-            return (header, SMB2.NegotiateResponse(data: messageData))
-        case .SESSION_SETUP:
-            return (header, SMB2.SessionSetupResponse(data: messageData))
-        case .LOGOFF:
-            return (header, SMB2.LogOff(data: messageData))
-        case .TREE_CONNECT:
-            return (header, SMB2.TreeConnectResponse(data: messageData))
-        case .TREE_DISCONNECT:
-            return (header, SMB2.TreeDisconnect(data: messageData))
-        case .CREATE:
-            return (header, SMB2.CreateResponse(data: messageData))
-        case .CLOSE:
-            return (header, SMB2.CloseResponse(data: messageData))
-        case .FLUSH:
-            return (header, SMB2.FlushResponse(data: messageData))
-        case .READ:
-            return (header, nil) // FIXME:
-        case .WRITE:
-            return (header, nil) // FIXME:
-        case .LOCK:
-            return (header, nil) // FIXME:
-        case .IOCTL:
-            return (header, nil)
-        case .CANCEL:
-            return (header, nil)
-        case .ECHO:
-            return (header, SMB2.Echo(data: messageData))
-        case .QUERY_DIRECTORY:
-            return (header, nil) // FIXME:
-        case .CHANGE_NOTIFY:
-            return (header, nil) // FIXME:
-        case .QUERY_INFO:
-            return (header, nil) // FIXME:
-        case .SET_INFO:
-            return (header, nil) // FIXME:
-        case .OPLOCK_BREAK:
-            return (header, nil) // FIXME:
-        case .INVALID:
-            throw SMBFileProviderError.InvalidCommand
-        }
-    }
-    
-    class func createSMBMessage(header: SMB1.Header, blocks: [(params: NSData?, message: NSData?)]) -> NSData {
-        var headerv = header
-        let result = NSMutableData(data: encode(&headerv))
-        for block in blocks {
-            var paramWordsCount = UInt8(block.params?.length ?? 0)
-            result.appendBytes(&paramWordsCount, length: sizeofValue(paramWordsCount))
-            if let params = block.params {
-                result.appendData(params)
-            }
-            var messageLen = UInt16(block.message?.length ?? 0)
-            result.appendBytes(&messageLen, length: sizeofValue(messageLen))
-            if let message = block.message {
-                result.appendData(message)
-            }
-        }
-        return result
-    }
-    
-    class func createSMB2Message(header: SMB2.Header, message: SMBRequest) -> NSData {
-        var headerv = header
-        let result = NSMutableData(data: encode(&headerv))
-        result.appendData(message.data())
-        return result
-    }
-}
-
-struct SMBTime {
-    var time: UInt64
-    
-    init(time: UInt64) {
-        self.time = time
-    }
-    
-    init(unixTime: UInt) {
-        self.time = (UInt64(unixTime) + 11644473600) * 10000000
-    }
-    
-    init(timeIntervalSince1970: NSTimeInterval) {
-        self.time = UInt64((timeIntervalSince1970 + 11644473600) * 10000000)
-    }
-    
-    init(date: NSDate) {
-        self.init(timeIntervalSince1970: date.timeIntervalSince1970)
-    }
-    
-    var unixTime: UInt {
-        return UInt(self.time / 10000000 - 11644473600)
-    }
-    
-    var date: NSDate {
-        return NSDate(timeIntervalSince1970: Double(self.time) / 10000000 - 11644473600)
-    }
-}
-
-protocol FileProviderSMBHeader {
-    var protocolID: UInt32 { get }
-    static var protocolConst: UInt32 { get }
-}
-
-// SMB/CIFS Types
-struct SMB1 {
-    struct Header { // 32 bytes
-        // header is always \u{ff}SMB
-        let protocolID: UInt32
-        static let protocolConst: UInt32 = 0x424d53ff
-        private var _command: UInt8
-        var command: Command {
-            get {
-                return Command(rawValue: _command) ?? .INVALID
-            }
-            set {
-                _command = newValue.rawValue
-            }
-        }
-        // error messages from the server to the client
-        private var _status: (UInt8, UInt8, UInt8, UInt8)
-        var error: (Class: UInt8, code: UInt16) {
-            get {
-                return (_status.0, UInt16(_status.2) + (UInt16(_status.3) << 8))
-            }
-            set {
-                _status = (newValue.Class, 0, UInt8(newValue.code & 0xff), UInt8(newValue.code >> 8))
-            }
-        }
-        var ntStatus: UInt32 {
-            get {
-                let statusLo = UInt32(_status.0) + UInt32(_status.1) << 8
-                let statusHi = UInt32(_status.2) + UInt32(_status.3) << 8
-                return statusHi << 16 + statusLo
-            }
-            set {
-                _status = (UInt8(newValue & 0xff), UInt8(newValue >> 8 & 0xff), UInt8(newValue >> 16 & 0xff), UInt8(newValue >> 24 & 0xff))
-            }
-        }
-        var flags: Flags
-        var flags2: Flags2
-        var pidHigh: UInt16
-        //  encryption key used for validating messages over connectionless transports
-        private var _securityKey: (UInt16, UInt16)
-        var securityKey: UInt32 {
-            get {
-                return UInt32(_securityKey.1) << 16 + UInt32(_securityKey.0)
-            }
-            set {
-                _securityKey = (UInt16(newValue & 0xffff), UInt16(newValue >> 16))
-            }
-        }
-        ///  Connection identifier
-        var securityCID: UInt16
-        ///  Identifier of the sequence of a message over connectionless transports
-        var securitySequenceNumber: UInt16
-        private var ununsed: UInt16
-        var treeId: UInt16
-        var pidLow: UInt16
-        var userId: UInt16
-        var multiplexId: UInt16
-        var pid: UInt32 {
-            get {
-                return UInt32(pidLow) + UInt32(pidHigh) << 16
-            }
-            set {
-                pidLow = UInt16(newValue & 0xffff)
-                pidHigh = UInt16(newValue >> 16)
-            }
-        }
-        
-        init(command: Command, ntStatus: UInt32 = 0, flags: Flags, flags2: Flags2 = [.LONG_NAMES, .ERR_STATUS, .UNICODE], securityKey: UInt32 = 0, securityCID: UInt16 = 0, securitySequenceNumber: UInt16 = 0, treeId: UInt16, pid: UInt32, userId: UInt16, multiplexId: UInt16) {
-            self.protocolID = Header.protocolConst
-            self._command = command.rawValue
-            _status = (UInt8(ntStatus & 0xff), UInt8(ntStatus >> 8 & 0xff), UInt8(ntStatus >> 16 & 0xff), UInt8(ntStatus >> 24 & 0xff))
-            self.flags = flags
-            self.flags2 = flags2
-            self._securityKey = (UInt16(securityKey & 0xffff), UInt16(securityKey >> 16))
-            self.securityCID = securityCID
-            self.securitySequenceNumber = securitySequenceNumber
-            self.ununsed = 0
-            self.treeId = treeId
-            self.pidLow = UInt16(pid & 0xffff)
-            self.pidHigh = UInt16(pid >> 16)
-            self.userId = userId
-            self.multiplexId = multiplexId
-        }
-    }
-    
-    struct Flags: OptionSetType {
-        let rawValue: UInt8
-        
-        init(rawValue: UInt8) {
-            self.rawValue = rawValue
-        }
-        /** This bit is set (1) in the NEGOTIATE (0x72) Response if the server supports
-         * LOCK_AND_READ (0x13) and WRITE_AND_UNLOCK (0x14) commands. */
-        static let LOCK_AND_READ_OK       = Flags(rawValue: 0x01)
-        static let BUF_AVAIL              = Flags(rawValue: 0x02)
-        static let CASE_INSENSITIVE       = Flags(rawValue: 0x08)
-        static let CANONICALIZED_PATHS    = Flags(rawValue: 0x10)
-        static let OPLOCK                 = Flags(rawValue: 0x20)
-        static let OPBATCH                = Flags(rawValue: 0x40)
-        /**  When on, this message is being sent from the server in response to a client request. */
-        static let REPLY                  = Flags(rawValue: 0x80)
-    }
-    
-    struct Flags2: OptionSetType {
-        let rawValue: UInt16
-        
-        init(rawValue: UInt16) {
-            self.rawValue = rawValue
-        }
-        /** Client: the message MAY contain long file names. */
-        static let LONG_NAMES             = Flags2(rawValue: 0x0001)
-        /** Client: the client is aware of extended attributes (EAs). */
-        static let EAS                    = Flags2(rawValue: 0x0002)
-        /** Client: the client is requesting signing (if signing is not yet active) or the message
-         * being sent is signed. This bit is used on the SMB header of an SESSION_SETUP_ANDX */
-        static let SMB_SECURITY_SIGNATURE = Flags2(rawValue: 0x0004)
-        ///  Reserved but not implemented.
-        static let IS_LONG_NAME           = Flags2(rawValue: 0x0040)
-        /** client aware of Extended Security negotiation */
-        static let EXT_SEC                = Flags2(rawValue:  0x0800)
-        /** any pathnames in this SMB SHOULD be resolved in the Distributed File System (DFS) */
-        static let DFS                    = Flags2(rawValue: 0x1000)
-        /**
-         * This flag is useful only on a read request. If the bit is set, then the client MAY read
-         * the file if the client does not have read permission but does have execute permission. */
-        static let PAGING_IO              = Flags2(rawValue:  0x2000) // READ_IF_EXECUTE
-        /**
-         * Client: the server MUST return errors as 32-bit NTSTATUS codes in the response
-         * Server: the Status field in the header is formatted as an NTSTATUS cod */
-        static let ERR_STATUS             = Flags2(rawValue: 0x4000)
-        /**
-         * Each field that contains a string in this SMB message MUST be encoded
-         * as an array of 16-bit Unicode characters */
-        static let UNICODE                = Flags2(rawValue: 0x8000)
-    }
-    
-    enum Command: UInt8 {
-        case CREATE_DIRECTORY       = 0x00
-        case DELETE_DIRECTORY       = 0x01
-        case OPEN                   = 0x02
-        case CREATE                 = 0x03
-        case CLOSE                  = 0x04
-        case FLUSH                  = 0x05
-        case DELETE                 = 0x06
-        case RENAME                 = 0x07
-        case QUERY_INFORMATION      = 0x08
-        case SET_INFORMATION        = 0x09
-        case READ                   = 0x0A
-        case WRITE                  = 0x0B
-        case LOCK_BYTE_RANGE        = 0x0C
-        case UNLOCK_BYTE_RANGE      = 0x0D
-        case CREATE_TEMPORARY       = 0x0E
-        case CREATE_NEW             = 0x0F
-        case CHECK_DIRECTORY        = 0x10
-        case PROCESS_EXIT           = 0x11
-        case SEEK                   = 0x12
-        case LOCK_AND_READ          = 0x13
-        case WRITE_AND_UNLOCK       = 0x14
-        case READ_RAW               = 0x1A
-        case READ_MPX               = 0x1B
-        case READ_MPX_SECONDARY     = 0x1C
-        case WRITE_RAW              = 0x1D
-        case WRITE_MPX              = 0x1E
-        case WRITE_COMPLETE         = 0x20
-        case SET_INFORMATION2       = 0x22
-        case QUERY_INFORMATION2     = 0x23
-        case LOCKING_ANDX           = 0x24
-        case TRANSACTION            = 0x25
-        case TRANSACTION_SECONDARY  = 0x26
-        case IOCTL                  = 0x27
-        case IOCTL_SECONDARY        = 0x28
-        case COPY                   = 0x29
-        case MOVE                   = 0x2A
-        case ECHO                   = 0x2B
-        case WRITE_AND_CLOSE        = 0x2C
-        case OPEN_ANDX              = 0x2D
-        case READ_ANDX              = 0x2E
-        case WRITE_ANDX             = 0x2F
-        case CLOSE_AND_TREE_DISC    = 0x31
-        case TRANSACTION2           = 0x32
-        case TRANSACTION2_SECONDARY = 0x33
-        case FIND_CLOSE2            = 0x34
-        case FIND_NOTIFY_CLOSE      = 0x35
-        case TREE_CONNECT           = 0x70
-        case TREE_DISCONNECT        = 0x71
-        case NEGOTIATE              = 0x72
-        case SESSION_SETUP_ANDX     = 0x73
-        case LOGOFF_ANDX            = 0x74
-        case TREE_CONNECT_ANDX      = 0x75
-        case QUERY_INFORMATION_DISK = 0x80
-        case SEARCH                 = 0x81
-        case FIND                   = 0x82
-        case FIND_UNIQUE            = 0x83
-        case NT_TRANSACT            = 0xA0
-        case NT_TRANSACT_SECONDARY  = 0xA1
-        case NT_CREATE_ANDX         = 0xA2
-        case NT_CANCEL              = 0xA4
-        case OPEN_PRINT_FILE        = 0xC0
-        case WRITE_PRINT_FILE       = 0xC1
-        case CLOSE_PRINT_FILE       = 0xC2
-        case GET_PRINT_QUEUE        = 0xC3
-        case READ_BULK              = 0xD8
-        case WRITE_BULK             = 0xD9
-        case WRITE_BULK_DATA        = 0xDA
-        case INVALID                = 0xFE
-    }
-}
-
-/// Error Types and Description
-
-enum NTStatus: UInt32, ErrorType, CustomStringConvertible {
-    case SUCCESS                        = 0x00000000
-    case NOT_IMPLEMENTED                = 0xC0000002
-    case INVALID_DEVICE_REQUEST         = 0xC0000010
-    case ILLEGAL_FUNCTION               = 0xC00000AF
-    case NO_SUCH_FILE                   = 0xC000000F
-    case NO_SUCH_DEVICE                 = 0xC000000E
-    case OBJECT_NAME_NOT_FOUND          = 0xC0000034
-    case OBJECT_PATH_INVALID            = 0xC0000039
-    case OBJECT_PATH_NOT_FOUND          = 0xC000003A
-    case OBJECT_PATH_SYNTAX_BAD         = 0xC000003B
-    case DFS_EXIT_PATH_FOUND            = 0xC000009B
-    case REDIRECTOR_NOT_STARTED         = 0xC00000FB
-    case TOO_MANY_OPENED_FILES          = 0xC000011F
-    case ACCESS_DENIED                  = 0xC0000022
-    case INVALID_LOCK_SEQUENCE          = 0xC000001E
-    case INVALID_VIEW_SIZE              = 0xC000001F
-    case ALREADY_COMMITTED              = 0xC0000021
-    case PORT_CONNECTION_REFUSED        = 0xC0000041
-    case THREAD_IS_TERMINATING          = 0xC000004B
-    case DELETE_PENDING                 = 0xC0000056
-    case PRIVILEGE_NOT_HELD             = 0xC0000061
-    case LOGON_FAILURE                  = 0xC000006D
-    case FILE_IS_A_DIRECTORY            = 0xC00000BA
-    case FILE_RENAMED                   = 0xC00000D5
-    case PROCESS_IS_TERMINATING         = 0xC000010A
-    case DIRECTORY_NOT_EMPTY            = 0xC0000101
-    case CANNOT_DELETE                  = 0xC0000121
-    case FILE_NOT_AVAILABLE             = 0xC0000467
-    case FILE_DELETED                   = 0xC0000123
-    case SMB_BAD_FID                    = 0x00060001
-    case INVALID_HANDLE                 = 0xC0000008
-    case OBJECT_TYPE_MISMATCH           = 0xC0000024
-    case PORT_DISCONNECTED              = 0xC0000037
-    case INVALID_PORT_HANDLE            = 0xC0000042
-    case FILE_CLOSED                    = 0xC0000128
-    case HANDLE_NOT_CLOSABLE            = 0xC0000235
-    case SECTION_TOO_BIG                = 0xC0000040
-    case TOO_MANY_PAGING_FILES          = 0xC0000097
-    case INSUFF_SERVER_RESOURCES        = 0xC0000205
-    case OS2_INVALID_ACCESS             = 0x000C0001
-    case ACCESS_DENIED_2                = 0xC00000CA
-    case DATA_ERROR                     = 0xC000009C
-    case NOT_SAME_DEVICE                = 0xC00000D4
-    case NO_MORE_FILES                  = 0x80000006
-    case NO_MORE_ENTRIES                = 0x8000001A
-    case UNSUCCESSFUL                   = 0xC0000001
-    case SHARING_VIOLATION              = 0xC0000043
-    case FILE_LOCK_CONFLICT             = 0xC0000054
-    case LOCK_NOT_GRANTED               = 0xC0000055
-    case END_OF_FILE                    = 0xC0000011
-    case NOT_SUPPORTED                  = 0xC00000BB
-    case OBJECT_NAME_COLLISION          = 0xC0000035
-    case INVALID_PARAMETER              = 0xC000000D
-    case OS2_INVALID_LEVEL              = 0x007C0001
-    case OS2_NEGATIVE_SEEK              = 0x00830001
-    case RANGE_NOT_LOCKED               = 0xC000007E
-    case OS2_NO_MORE_SIDS               = 0x00710001
-    case OS2_CANCEL_VIOLATION           = 0x00AD0001
-    case OS2_ATOMIC_LOCKS_NOT_SUPPORTED = 0x00AE0001
-    case INVALID_INFO_CLASS             = 0xC0000003
-    case INVALID_PIPE_STATE             = 0xC00000AD
-    case INVALID_READ_MODE              = 0xC00000B4
-    case OS2_CANNOT_COPY                = 0x010A0001
-    case STOPPED_ON_SYMLINK             = 0x8000002D
-    case INSTANCE_NOT_AVAILABLE         = 0xC00000AB
-    case PIPE_NOT_AVAILABLE             = 0xC00000AC
-    case PIPE_BUSY                      = 0xC00000AE
-    case PIPE_CLOSING                   = 0xC00000B1
-    case PIPE_EMPTY                     = 0xC00000D9
-    case PIPE_DISCONNECTED              = 0xC00000B0
-    case BUFFER_OVERFLOW                = 0x80000005
-    case MORE_PROCESSING_REQUIRED       = 0xC0000016
-    case EA_TOO_LARGE                   = 0xC0000050
-    case OS2_EAS_DIDNT_FIT              = 0x01130001
-    case EAS_NOT_SUPPORTED              = 0xC000004F
-    case EA_LIST_INCONSISTENT           = 0x80000014
-    case OS2_EA_ACCESS_DENIED           = 0x03E20001
-    case NOTIFY_ENUM_DIR                = 0x0000010C
-    case INVALID_SMB                    = 0x00010002
-    case WRONG_PASSWORD                 = 0xC000006A
-    case PATH_NOT_COVERED               = 0xC0000257
-    case NETWORK_NAME_DELETED           = 0xC00000C9
-    case SMB_BAD_TID                    = 0x00050002
-    case BAD_NETWORK_NAME               = 0xC00000CC
-    case BAD_DEVICE_TYPE                = 0xC00000CB
-    case SMB_BAD_COMMAND                = 0x00160002
-    case PRINT_QUEUE_FULL               = 0xC00000C6
-    case NO_SPOOL_SPACE                 = 0xC00000C7
-    case PRINT_CANCELLED                = 0xC00000C8
-    case UNEXPECTED_NETWORK_ERROR       = 0xC00000C4
-    case IO_TIMEOUT                     = 0xC00000B5
-    case REQUEST_NOT_ACCEPTED           = 0xC00000D0
-    case TOO_MANY_SESSIONS              = 0xC00000CE
-    case SMB_BAD_UID                    = 0x005B0002
-    case SMB_USE_MPX                    = 0x00FA0002
-    case SMB_USE_STANDARD               = 0x00FB0002
-    case SMB_CONTINUE_MPX               = 0x00FC0002
-    case ACCOUNT_DISABLED               = 0xC0000072
-    case ACCOUNT_EXPIRED                = 0xC0000193
-    case INVALID_WORKSTATION            = 0xC0000070
-    case INVALID_LOGON_HOURS            = 0xC000006F
-    case PASSWORD_EXPIRED               = 0xC0000071
-    case PASSWORD_MUST_CHANGE           = 0xC0000224
-    case SMB_NO_SUPPORT                 = 0xFFFF0002
-    case MEDIA_WRITE_PROTECTED          = 0xC00000A2
-    case NO_MEDIA_IN_DEVICE             = 0xC0000013
-    case INVALID_DEVICE_STATE           = 0xC0000184
-    case DATA_ERROR_2                   = 0xC000003E
-    case CRC_ERROR                      = 0xC000003F
-    case DISK_CORRUPT_ERROR             = 0xC0000032
-    case NONEXISTENT_SECTOR             = 0xC0000015
-    case DEVICE_PAPER_EMPTY             = 0x8000000E
-    case WRONG_VOLUME                   = 0xC0000012
-    case DISK_FULL                      = 0xC000007F
-    case BUFFER_TOO_SMALL               = 0xC0000023
-    case BAD_IMPERSONATION_LEVEL        = 0xC00000A5
-    case USER_SESSION_DELETED           = 0xC0000203
-    case NETWORK_SESSION_EXPIRED        = 0xC000035C
-    case SMB_TOO_MANY_UIDS              = 0xC000205A
-    
-    var description: String {
-        switch self {
-        case NOT_IMPLEMENTED, INVALID_DEVICE_REQUEST, ILLEGAL_FUNCTION:
-            return "Invalid Function."
-        case NO_SUCH_FILE, NO_SUCH_DEVICE, OBJECT_NAME_NOT_FOUND:
-            return "File not found."
-        case OBJECT_PATH_INVALID, OBJECT_PATH_NOT_FOUND, OBJECT_PATH_SYNTAX_BAD, DFS_EXIT_PATH_FOUND, REDIRECTOR_NOT_STARTED:
-            return "A component in the path prefix is not a directory."
-        case TOO_MANY_OPENED_FILES:
-            return "Too many open files. No FIDs are available."
-        case ACCESS_DENIED, INVALID_LOCK_SEQUENCE, INVALID_VIEW_SIZE, ALREADY_COMMITTED, PORT_CONNECTION_REFUSED, THREAD_IS_TERMINATING, DELETE_PENDING, PRIVILEGE_NOT_HELD, LOGON_FAILURE, FILE_IS_A_DIRECTORY, FILE_RENAMED, PROCESS_IS_TERMINATING, CANNOT_DELETE, FILE_DELETED:
-            return "Access denied."
-        case SMB_BAD_FID, INVALID_HANDLE, OBJECT_TYPE_MISMATCH, PORT_DISCONNECTED, INVALID_PORT_HANDLE, FILE_CLOSED, HANDLE_NOT_CLOSABLE:
-            return "Invalid FID."
-        case SECTION_TOO_BIG, TOO_MANY_PAGING_FILES, INSUFF_SERVER_RESOURCES:
-            return "Insufficient server memory to perform the requested operation."
-        case OS2_INVALID_ACCESS:
-            return "Invalid open mode."
-        case DATA_ERROR:
-            return "Bad data. (May be generated by IOCTL calls on the server.)"
-        case DIRECTORY_NOT_EMPTY:
-            return "Remove of directory failed because it was not empty."
-        case NOT_SAME_DEVICE:
-            return "A file system operation (such as a rename) across two devices was attempted."
-        case NO_MORE_FILES:
-            return "No (more) files found following a file search command."
-        case UNSUCCESSFUL:
-            return "General error."
-        case SHARING_VIOLATION:
-            return "Sharing violation. A requested open mode conflicts with the sharing mode of an existing file handle."
-        case FILE_LOCK_CONFLICT, LOCK_NOT_GRANTED:
-            return "A lock request specified an invalid locking mode, or conflicted with an existing file lock."
-        case END_OF_FILE:
-            return "Attempted to read beyond the end of the file."
-        case NOT_SUPPORTED:
-            return "This command is not supported by the server."
-        case OBJECT_NAME_COLLISION:
-            return "An attempt to create a file or directory failed because an object with the same pathname already exists."
-        case INVALID_PARAMETER:
-            return "A parameter supplied with the message is invalid."
-        case OS2_INVALID_LEVEL:
-            return "Invalid information level."
-        case OS2_NEGATIVE_SEEK:
-            return "An attempt was made to seek to a negative absolute offset within a file."
-        case RANGE_NOT_LOCKED:
-            return "The byte range specified in an unlock request was not locked."
-        case OS2_NO_MORE_SIDS:
-            return "Maximum number of searches has been exhausted."
-        case OS2_CANCEL_VIOLATION:
-            return "No lock request was outstanding for the supplied cancel region."
-        case OS2_ATOMIC_LOCKS_NOT_SUPPORTED:
-            return "The file system does not support atomic changes to the lock type."
-        case INVALID_INFO_CLASS, INVALID_PIPE_STATE, INVALID_READ_MODE:
-            return "Invalid named pipe."
-        case OS2_CANNOT_COPY:
-            return "The copy functions cannot be used."
-        case INSTANCE_NOT_AVAILABLE, PIPE_NOT_AVAILABLE, PIPE_BUSY:
-            return "All instances of the designated named pipe are busy."
-        case PIPE_CLOSING, PIPE_EMPTY:
-            return "The designated named pipe is in the process of being closed."
-        case PIPE_DISCONNECTED:
-            return "The designated named pipe exists, but there is no server process listening on the server side."
-        case BUFFER_OVERFLOW, MORE_PROCESSING_REQUIRED:
-            return "There is more data available to read on the designated named pipe."
-        case EA_TOO_LARGE, OS2_EAS_DIDNT_FIT:
-            return "Either there are no extended attributes, or the available extended attributes did not fit into the response."
-        case EAS_NOT_SUPPORTED:
-            return "The server file system does not support Extended Attributes."
-        case OS2_EA_ACCESS_DENIED:
-            return "Access to the extended attribute was denied."
-        default:
-            return ""
-        }
-    }
-}

Source/SMBFileProvider.swift

@@ -1,116 +0,0 @@
-//
-//  SambaFileProvider.swift
-//  FileProvider
-//
-//  Created by Amir Abbas Mousavian.
-//  Copyright © 2016 Mousavian. Distributed under MIT license.
-//
-
-import Foundation
-
-class SMBFileProvider: FileProvider, FileProviderMonitor {
-    var type: String = "Samba"
-    var isPathRelative: Bool = true
-    var baseURL: NSURL?
-    var currentPath: String = ""
-    var dispatch_queue: dispatch_queue_t
-    var delegate: FileProviderDelegate?
-    let credential: NSURLCredential?
-    
-    typealias FileObjectClass = FileObject
-    
-    init? (baseURL: NSURL, credential: NSURLCredential, afterInitialized: SimpleCompletionHandler) {
-        guard baseURL.scheme.lowercaseString == "smb" else {
-            return nil
-        }
-        self.baseURL = baseURL
-        dispatch_queue = dispatch_queue_create("FileProvider.\(type)", DISPATCH_QUEUE_CONCURRENT)
-        //let url = baseURL.absoluteString
-        self.credential = credential
-    }
-        
-    func contentsOfDirectoryAtPath(path: String, completionHandler: ((contents: [FileObjectClass], error: ErrorType?) -> Void)) {
-        NotImplemented()
-        dispatch_async(dispatch_queue) { 
-            
-        }
-    }
-    
-    func attributesOfItemAtPath(path: String, completionHandler: ((attributes: FileObjectClass?, error: ErrorType?) -> Void)) {
-        NotImplemented()
-    }
-    
-    func createFolder(folderName: String, atPath: String, completionHandler: SimpleCompletionHandler) {
-        NotImplemented()
-    }
-    
-    func createFile(fileAttribs: FileObject, atPath: String, contents data: NSData?, completionHandler: SimpleCompletionHandler) {
-        NotImplemented()
-    }
-    
-    func moveItemAtPath(path: String, toPath: String, overwrite: Bool = false, completionHandler: SimpleCompletionHandler) {
-        NotImplemented()
-    }
-    
-    func copyItemAtPath(path: String, toPath: String, overwrite: Bool = false, completionHandler: SimpleCompletionHandler) {
-        NotImplemented()
-    }
-    
-    func removeItemAtPath(path: String, completionHandler: SimpleCompletionHandler) {
-        NotImplemented()
-    }
-    
-    func copyLocalFileToPath(localFile: NSURL, toPath: String, completionHandler: SimpleCompletionHandler) {
-        NotImplemented()
-    }
-    
-    func copyPathToLocalFile(path: String, toLocalURL: NSURL, completionHandler: SimpleCompletionHandler) {
-        NotImplemented()
-    }
-    
-    func contentsAtPath(path: String, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void)) {
-        NotImplemented()
-    }
-    
-    func contentsAtPath(path: String, offset: Int64, length: Int, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void)) {
-        NotImplemented()
-    }
-    
-    func writeContentsAtPath(path: String, contents data: NSData, atomically: Bool, completionHandler: SimpleCompletionHandler) {
-        NotImplemented()
-    }
-    
-    func searchFilesAtPath(path: String, recursive: Bool, query: String, foundItemHandler: ((FileObjectClass) -> Void)?, completionHandler: ((files: [FileObjectClass], error: ErrorType?) -> Void)) {
-        NotImplemented()
-    }
-    
-    func registerNotifcation(path: String, eventHandler: (() -> Void)) {
-        NotImplemented()
-    }
-    
-    func unregisterNotifcation(path: String) {
-        NotImplemented()
-    }
-
-}
-
-// MARK: basic CIFS interactivity
-enum SMBFileProviderError: Int, ErrorType, CustomStringConvertible {
-    case BadHeader
-    case IncompatibleHeader
-    case IncorrectParamsLength
-    case IncorrectMessageLength
-    case InvalidCommand
-    
-    var description: String {
-        return "SMB message structure is invalid"
-    }
-}
-
-extension SMBFileProvider {
-    private func getPID() -> UInt32 {
-        return UInt32(NSProcessInfo.processInfo().processIdentifier)
-    }
-}
-
-

Source/TCPSocketClient.swift

@@ -1,249 +0,0 @@
-//
-//  SocketTransmitter.swift
-//  FileProvider
-//
-//  Created by Amir Abbas Mousavian.
-//  Copyright © 2016 Mousavian. Distributed under MIT license.
-//
-
-import Foundation
-
-public class TCPSocketClient: NSObject, NSStreamDelegate {
-    public static let ports = ["http": 80,
-                        "https": 443,
-                        "smb": 445,
-                        "ftp": 21,
-                        "sftp": 22,
-                        "sftp": 2121,
-                        "telnet": 23,
-                        "pop": 110,
-                        "smtp": 25,
-                        "imap": 143]
-    public static let securePorts =  ["https": 443,
-                               "smb": 445,
-                               "sftp": 22,
-                               "sftp": 2121,
-                               "telnet": 992,
-                               "pop": 995,
-                               "smtp": 465,
-                               "imap": 993]
-    
-    private var inputStream: NSInputStream?
-    private var outputStream: NSOutputStream?
-    private var dataToBeSent: NSMutableData = NSMutableData()
-    /// holds data received from server
-    public let dataReceived: NSMutableData = NSMutableData()
-    /// a url with valid scheme, dns or ip host and ports path and query sections will be neglected
-    public let baseURL: NSURL
-    /// a url with valid scheme, dns or ip host and ports path and query sections will be neglected
-    public let secureConnection: Bool
-    /// server's ports which is value between 1 to 65535
-    private let port: UInt32
-    private var open = false
-    
-    /**
-     * - parameter baseURL: a url with valid scheme, dns or ip host and ports
-     * path and query sections will be neglected
-     *
-     * **Note** Call `connect()` to establish connection
-     * - parameter secure: establishing connection using an SSL/TLS connection
-     */
-    
-    init?(baseURL: NSURL, secure: Bool = false) {
-        self.baseURL = baseURL
-        self.secureConnection = secure
-        let scheme = baseURL.scheme.lowercaseString
-        let defaultPort = secure ? UInt32(TCPSocketClient.securePorts[scheme] ?? 0) : UInt32(TCPSocketClient.ports[scheme] ?? 0)
-        self.port = baseURL.port?.unsignedIntValue ?? defaultPort
-        if self.port == 0 {
-            return nil
-        }
-    }
-    
-    deinit {
-        disconnect()
-    }
-
-    /**
-     * Establshes a connection to desired server
-     * - returns: A bool value which indicated there where no system error during
-     * creating connection
-     */
-    
-    public func connect() -> Bool {
-        guard let hostStr = baseURL.host else {
-            return false
-        }
-        var readStream : Unmanaged<CFReadStream>?
-        var writeStream : Unmanaged<CFWriteStream>?
-        let host : CFString = NSString(string: hostStr)
-        
-        CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, host, self.port, &readStream, &writeStream)
-        inputStream = readStream?.takeRetainedValue()
-        outputStream = writeStream?.takeRetainedValue()
-        
-        guard let inputStream = inputStream, outputStream = outputStream else {
-            return false
-        }
-        
-        inputStream.delegate = self
-        outputStream.delegate = self
-        
-        inputStream.scheduleInRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
-        outputStream.scheduleInRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
-        
-        if secureConnection {
-            inputStream.setProperty(NSStreamSocketSecurityLevelNegotiatedSSL, forKey: NSStreamSocketSecurityLevelKey)
-            outputStream.setProperty(NSStreamSocketSecurityLevelNegotiatedSSL, forKey: NSStreamSocketSecurityLevelKey)
-        }
-        
-        inputStream.open()
-        outputStream.open()
-        return true
-    }
-    
-    /**
-     * Terminates connection to the server
-     */
-    
-    public func disconnect() {
-        inputStream?.setValue(kCFBooleanTrue, forKey: kCFStreamPropertyShouldCloseNativeSocket as String)
-        outputStream?.setValue(kCFBooleanTrue, forKey: kCFStreamPropertyShouldCloseNativeSocket as String)
-        
-        self.inputStream?.close()
-        self.outputStream?.close()
-        
-        self.inputStream?.removeFromRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
-        self.outputStream?.removeFromRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
-        
-        self.inputStream?.delegate = nil
-        self.outputStream?.delegate = nil
-        
-        self.inputStream = nil
-        self.outputStream = nil
-    }
-    
-    public func stream(aStream: NSStream, handleEvent eventCode: NSStreamEvent) {
-        switch (eventCode) {
-        case NSStreamEvent.ErrorOccurred:
-            open = false
-        case NSStreamEvent.EndEncountered:
-            break
-        case NSStreamEvent.None:
-            break
-        case NSStreamEvent.OpenCompleted:
-            let activeStatus: [NSStreamStatus] = [.Open, .Reading, .Writing, .AtEnd]
-            open = activeStatus.contains(inputStream?.streamStatus ?? .NotOpen) && activeStatus.contains(outputStream?.streamStatus ?? .NotOpen)
-        case NSStreamEvent.HasBytesAvailable:
-            var buffer = [UInt8](count: 2048, repeatedValue: 0)
-            if ( aStream == inputStream) {
-                while (inputStream!.hasBytesAvailable ?? false) {
-                    let len = inputStream!.read(&buffer, maxLength: buffer.count)
-                    if len > 0 {
-                        dataReceived.appendBytes(&buffer, length: len)
-                    }
-                }
-            }
-        case NSStreamEvent.HasSpaceAvailable:
-            if aStream == outputStream {
-                do {
-                    try send(data: nil)
-                } catch _ {
-                    NSLog("Sending error")
-                }
-                
-            }
-        default:
-            break
-        }
-    }
-    
-    /**
-     * Sends data to server
-     * - parameter data: data which is intended to be sent to server
-     * - throws: NSURLError.NetworkConnectionLost in case of server disconnects disgracefully
-     */
-    
-    public func send(data data: NSData?) throws {
-        guard let outputStream = outputStream else {
-            return
-        }
-        if outputStream.hasSpaceAvailable ?? false {
-            if let data = data {
-                dataToBeSent.appendData(data)
-            }
-            
-            if dataToBeSent.length > 0 {
-                let bytesWritten = outputStream.write(UnsafePointer(dataToBeSent.bytes), maxLength: dataToBeSent.length) ?? -1
-                if bytesWritten > 0 {
-                    let range = NSRange(location: 0, length: bytesWritten)
-                    dataToBeSent.replaceBytesInRange(range, withBytes: nil, length: 0)
-                } else {
-                    throw NSError(domain: NSURLErrorDomain, code:  NSURLError.NetworkConnectionLost.rawValue, userInfo: nil)
-                }
-            }
-            //println("Sent the following")
-        } else { //steam busy
-            if let data = data {
-                dataToBeSent.appendData(data)
-            }
-        }
-    }
-    
-    /**
-     * Clears entire send and receive buffer
-     */
-    
-    public func flush() {
-        dataToBeSent.length = 0
-        dataReceived.length = 0
-    }
-    
-    /**
-     * Put's thread in sleep until all data is sent
-     * **Note:** Don't call this method from main thread
-     */
-    
-    internal func waitUntillDataSent() {
-        if NSThread.isMainThread() {
-            assert(false, "waitUntillDataSent() method can't be called from main thread")
-        }
-        while true {
-            if dataToBeSent.length == 0 {
-                break
-            }
-            
-            NSRunLoop.currentRunLoop().runUntilDate(NSDate(timeIntervalSinceNow: 0.1));
-            NSThread.sleepForTimeInterval(0.1)
-        }
-    }
-    
-    /**
-     * Put's thread in sleep until all response from server is loaded into tcp stack
-     * server response can be retrieved by `dataReceived` property
-     * **Note:** Don't call this method from main thread
-     * - returns: A Bool value indicates all response loaded from server successfullt
-    */
-    
-    internal func waitUntilResponse() -> Bool {
-        if NSThread.isMainThread() {
-            assert(false, "waitUntilResponse() method can't be called from main thread")
-        }
-        var finished = false
-        while !finished {
-            switch inputStream?.streamStatus ?? .Error {
-            case .AtEnd:
-                finished = true
-                return true
-            case .Closed, .Error:
-                return false
-            default:
-                finished = false
-            }
-            
-            NSRunLoop.currentRunLoop().runUntilDate(NSDate(timeIntervalSinceNow: 0.1));
-            NSThread.sleepForTimeInterval(0.1)
-        }
-        return false
-    }
-}

Sources/DropboxFileProvider.swift

@@ -0,0 +1,378 @@
+//
+//  DropboxFileProvider.swift
+//  FileProvider
+//
+//  Created by Amir Abbas Mousavian.
+//  Copyright © 2016 Mousavian. Distributed under MIT license.
+//
+
+import Foundation
+import CoreGraphics
+
+// Because this class uses NSURLSession, it's necessary to disable App Transport Security
+// in case of using this class with unencrypted HTTP connection.
+
+public class DropboxFileProvider: NSObject,  FileProviderBasic {
+    public let type: String = "WebDAV"
+    public let isPathRelative: Bool = true
+    public let baseURL: NSURL?
+    public var currentPath: String = ""
+    public var dispatch_queue: dispatch_queue_t {
+        willSet {
+            assert(_session == nil, "It's not effective to change dispatch_queue property after session is initialized.")
+        }
+    }
+    public weak var delegate: FileProviderDelegate?
+    public let credential: NSURLCredential?
+    
+    private var _session: NSURLSession?
+    internal var session: NSURLSession {
+        if _session == nil {
+            let queue = NSOperationQueue()
+            //queue.underlyingQueue = dispatch_queue
+            _session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration(), delegate: self, delegateQueue: queue)
+        }
+        return _session!
+    }
+    
+    public init? (credential: NSURLCredential?) {
+        self.baseURL = nil
+        dispatch_queue = dispatch_queue_create("FileProvider.\(type)", DISPATCH_QUEUE_CONCURRENT)
+        //let url = baseURL.uw_absoluteString
+        self.credential = credential
+    }
+    
+    deinit {
+        _session?.invalidateAndCancel()
+    }
+    
+    public func contentsOfDirectoryAtPath(path: String, completionHandler: ((contents: [FileObject], error: ErrorType?) -> Void)) {
+        list(path) { (contents, cursor, error) in
+            completionHandler(contents: contents, error: error)
+        }
+    }
+    
+    public func attributesOfItemAtPath(path: String, completionHandler: ((attributes: FileObject?, error: ErrorType?) -> Void)) {
+        let url = NSURL(string: "https://api.dropboxapi.com/2/files/get_metadata")!
+        let request = NSMutableURLRequest(URL: url)
+        request.HTTPMethod = "POST"
+        request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
+        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
+        let requestDictionary = ["path": correctPath(path)!]
+        request.HTTPBody = dictionaryToJSON(requestDictionary)?.dataUsingEncoding(NSUTF8StringEncoding)
+        let task = session.dataTaskWithRequest(request) { (data, response, error) in
+            if let response = response as? NSHTTPURLResponse {
+                defer {
+                    self.delegateNotify(FileOperation.Create(path: path), error: error)
+                }
+                let code = FileProviderHTTPErrorCode(rawValue: response.statusCode)
+                let dbError: FileProviderDropboxError? = code != nil ? FileProviderDropboxError(code: code!, path: path, errorDescription: String(data: data ?? NSData(), encoding: NSUTF8StringEncoding)) : nil
+                if let data = data, let jsonStr = String(data: data, encoding: NSUTF8StringEncoding), let json = self.jsonToDictionary(jsonStr), let file = self.mapToFileObject(json) {
+                    completionHandler(attributes: file, error: dbError)
+                    return
+                }
+                completionHandler(attributes: nil, error: dbError)
+                return
+            }
+            completionHandler(attributes: nil, error: error)
+        }
+        task.resume()
+    }
+    
+    public func storageProperties(completionHandler: ((total: Int64, used: Int64) -> Void)) {
+        let url = NSURL(string: "https://api.dropboxapi.com/2/users/get_space_usage")!
+        let request = NSMutableURLRequest(URL: url)
+        request.HTTPMethod = "POST"
+        request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
+        let task = session.dataTaskWithRequest(request) { (data, response, error) in
+            if let data = data, let jsonStr = String(data: data, encoding: NSUTF8StringEncoding), let json = self.jsonToDictionary(jsonStr) {
+                let totalSize = ((json["allocation"] as? NSDictionary)?["allocated"] as? NSNumber)?.longLongValue ?? -1
+                let usedSize = (json["used"] as? NSNumber)?.longLongValue ?? 0
+                completionHandler(total: totalSize, used: usedSize)
+                return
+            }
+            completionHandler(total: -1, used: 0)
+        }
+        task.resume()
+    }
+    
+    public weak var fileOperationDelegate: FileOperationDelegate?
+}
+
+extension DropboxFileProvider: FileProviderOperations {
+    public func createFolder(folderName: String, atPath: String, completionHandler: SimpleCompletionHandler) {
+        let path = (atPath as NSString).stringByAppendingPathComponent(folderName) + "/"
+        doOperation(.Create(path: path), completionHandler: completionHandler)
+    }
+    
+    public func createFile(fileAttribs: FileObject, atPath path: String, contents data: NSData?, completionHandler: SimpleCompletionHandler) {
+        self.writeContentsAtPath(path, contents: data ?? NSData(), completionHandler: completionHandler)
+    }
+    
+    public func moveItemAtPath(path: String, toPath: String, overwrite: Bool = false, completionHandler: SimpleCompletionHandler) {
+        doOperation(.Move(source: path, destination: toPath), completionHandler: completionHandler)
+    }
+    
+    public func copyItemAtPath(path: String, toPath: String, overwrite: Bool = false, completionHandler: SimpleCompletionHandler) {
+        doOperation(.Copy(source: path, destination: toPath), completionHandler: completionHandler)
+    }
+    
+    public func removeItemAtPath(path: String, completionHandler: SimpleCompletionHandler) {
+        doOperation(.Remove(path: path), completionHandler: completionHandler)
+    }
+    
+    private func doOperation(operation: FileOperation, completionHandler: SimpleCompletionHandler) {
+        let url: String
+        var path: String?, fromPath: String?, toPath: String?
+        switch operation {
+        case .Create(path: let p):
+            url = "https://api.dropboxapi.com/2/files/create_folder"
+            path = p
+        case .Copy(source: let fp, destination: let tp):
+            url = "https://api.dropboxapi.com/2/files/copy"
+            fromPath = fp
+            toPath = tp
+        case .Move(source: let fp, destination: let tp):
+            url = "https://api.dropboxapi.com/2/files/move"
+            fromPath = fp
+            toPath = tp
+        case .Modify(path: let p):
+            return
+        case .Remove(path: let p):
+            url = "https://api.dropboxapi.com/2/files/delete"
+            path = p
+        case .Link(link: _, target: _):
+            return
+        }
+        let request = NSMutableURLRequest(URL: NSURL(string: url)!)
+        request.HTTPMethod = "POST"
+        request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
+        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
+        var requestDictionary = [String: AnyObject]()
+        requestDictionary["path"] = correctPath(path)
+        requestDictionary["from_path"] = correctPath(fromPath)
+        requestDictionary["to_path"] = correctPath(toPath)
+        request.HTTPBody = dictionaryToJSON(requestDictionary)?.dataUsingEncoding(NSUTF8StringEncoding)
+        let task = session.dataTaskWithRequest(request) { (data, response, error) in
+            if let response = response as? NSHTTPURLResponse {
+                let code = FileProviderHTTPErrorCode(rawValue: response.statusCode)
+                let dbError: FileProviderDropboxError? = code != nil ? FileProviderDropboxError(code: code!, path: path ?? fromPath ?? "", errorDescription: String(data: data ?? NSData(), encoding: NSUTF8StringEncoding)) : nil
+                defer {
+                    self.delegateNotify(operation, error: error ?? dbError)
+                }
+                /*if let data = data, let jsonStr = String(data: data, encoding: NSUTF8StringEncoding) {
+                 let json = self.jsonToDictionary(jsonStr)
+                 }*/
+                completionHandler?(error: dbError)
+                return
+            }
+            completionHandler?(error: error)
+        }
+        task.resume()
+    }
+    
+    public func copyLocalFileToPath(localFile: NSURL, toPath: String, completionHandler: SimpleCompletionHandler) {
+        guard let data = NSData(contentsOfURL: localFile) else {
+            let error = throwError(localFile.uw_absoluteString, code: NSURLError.FileDoesNotExist)
+            completionHandler?(error: error)
+            return
+        }
+        upload_simple(toPath, data: data, overwrite: true, operation: .Copy(source: localFile.absoluteString, destination: toPath), completionHandler: completionHandler)
+    }
+    
+    public func copyPathToLocalFile(path: String, toLocalURL destURL: NSURL, completionHandler: SimpleCompletionHandler) {
+        let url = NSURL(string: "https://content.dropboxapi.com/2/files/download")!
+        let request = NSMutableURLRequest(URL: url)
+        request.HTTPMethod = "GET"
+        request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
+        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
+        let requestDictionary = ["path": path]
+        request.setValue(dictionaryToJSON(requestDictionary), forHTTPHeaderField: "Dropbox-API-Arg")
+        let task = session.downloadTaskWithRequest(request, completionHandler: { (cacheURL, response, error) in
+            guard let cacheURL = cacheURL, let httpResponse = response as? NSHTTPURLResponse where httpResponse.statusCode < 300 else {
+                let code = FileProviderHTTPErrorCode(rawValue: (response as? NSHTTPURLResponse)?.statusCode ?? -1)
+                let dbError: FileProviderDropboxError? = code != nil ? FileProviderDropboxError(code: code!, path: path, errorDescription: nil) : nil
+                completionHandler?(error: dbError ?? error)
+                return
+            }
+            do {
+                try NSFileManager.defaultManager().moveItemAtURL(cacheURL, toURL: destURL)
+                completionHandler?(error: nil)
+            } catch let e {
+                completionHandler?(error: e)
+            }
+        })
+        task.taskDescription = self.dictionaryToJSON(["type": "Copy", "source": path, "dest": destURL.uw_absoluteString])
+        task.resume()
+    }
+}
+
+extension DropboxFileProvider: FileProviderReadWrite {
+    public func contentsAtPath(path: String, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void)) {
+        self.contentsAtPath(path, offset: 0, length: -1, completionHandler: completionHandler)
+    }
+    
+    public func contentsAtPath(path: String, offset: Int64, length: Int, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void)) {
+        let url = NSURL(string: "https://content.dropboxapi.com/2/files/download")!
+        let request = NSMutableURLRequest(URL: url)
+        request.HTTPMethod = "GET"
+        request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
+        if length > 0 {
+            request.setValue("bytes=\(offset)-\(offset + length)", forHTTPHeaderField: "Range")
+        } else if offset > 0 && length < 0 {
+            request.setValue("bytes=\(offset)-", forHTTPHeaderField: "Range")
+        }
+        let requestDictionary = ["path": path]
+        request.setValue(dictionaryToJSON(requestDictionary), forHTTPHeaderField: "Dropbox-API-Arg")
+        let task = session.dataTaskWithRequest(request, completionHandler: { (datam, response, error) in
+            guard let data = datam, let httpResponse = response as? NSHTTPURLResponse where httpResponse.statusCode < 300 else {
+                let code = FileProviderHTTPErrorCode(rawValue: (response as? NSHTTPURLResponse)?.statusCode ?? -1)
+                let dbError: FileProviderDropboxError? = code != nil ? FileProviderDropboxError(code: code!, path: path, errorDescription: String(data: datam ?? NSData(), encoding: NSUTF8StringEncoding)) : nil
+                completionHandler(contents: nil, error: dbError ?? error)
+                return
+            }
+            completionHandler(contents: data, error: error)
+        })
+        task.resume()
+    }
+    
+    public func writeContentsAtPath(path: String, contents data: NSData, atomically: Bool = false, completionHandler: SimpleCompletionHandler) {
+        // FIXME: remove 150MB restriction
+        upload_simple(path, data: data, overwrite: true, operation: .Modify(path: path), completionHandler: completionHandler)
+    }
+    
+    public func searchFilesAtPath(path: String, recursive: Bool, query: String, foundItemHandler: ((FileObject) -> Void)?, completionHandler: ((files: [FileObject], error: ErrorType?) -> Void)) {
+        var foundFiles = [DropboxFileObject]()
+        search(path, query: query, foundItem: { (file) in
+            foundFiles.append(file)
+            foundItemHandler?(file)
+            }, completionHandler: { (error) in
+                completionHandler(files: foundFiles, error: error)
+        })
+    }
+    
+    private func registerNotifcation(path: String, eventHandler: (() -> Void)) {
+        /* There is two ways to monitor folders changing in Dropbox. Either using webooks
+         * which means you have to implement a server to translate it to push notifications
+         * or using apiv2 list_folder/longpoll method. The second one is implemeted here.
+         * Tough webhooks are much more efficient, longpoll is much simpler to implement!
+         * You can implemnt your own webhook service and replace this method accordingly.
+         */
+        NotImplemented()
+    }
+    private func unregisterNotifcation(path: String) {
+        NotImplemented()
+    }
+    
+    // TODO: Implement /copy_reference, /get_temporary_link, /save_url, /get_account & /get_current_account
+}
+
+extension DropboxFileProvider: ExtendedFileProvider {
+    public func thumbnailOfFileSupported(path: String) -> Bool {
+        switch (path as NSString).pathExtension.lowercaseString {
+        case "jpg", "jpeg", "gif", "bmp", "png", "tif", "tiff":
+            return true
+        /*case "doc", "docx", "docm", "xls", "xlsx", "xlsm":
+            return true
+        case  "ppt", "pps", "ppsx", "ppsm", "pptx", "pptm":
+            return true
+        case "rtf":
+            return true*/
+        default:
+            return false
+        }
+    }
+    
+    public func propertiesOfFileSupported(path: String) -> Bool {
+        return false
+    }
+    
+    public func thumbnailOfFileAtPath(path: String, dimension: CGSize, completionHandler: ((image: ImageClass?, error: ErrorType?) -> Void)) {
+        let url: NSURL
+        switch (path as NSString).pathExtension.lowercaseString {
+        case "jpg", "jpeg", "gif", "bmp", "png", "tif", "tiff":
+            url = NSURL(string: "https://content.dropboxapi.com/2/files/get_thumbnail")!
+        /*case "doc", "docx", "docm", "xls", "xlsx", "xlsm":
+            fallthrough
+        case  "ppt", "pps", "ppsx", "ppsm", "pptx", "pptm":
+            fallthrough
+        case "rtf":
+            url = NSURL(string: "https://content.dropboxapi.com/2/files/get_preview")!*/
+        default:
+            return
+        }
+        let request = NSMutableURLRequest(URL: url)
+        request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
+        var requestDictionary = ["path": path]
+        requestDictionary["format"] = "jpeg"
+        requestDictionary["size"] = "w\(Int(dimension.width))h\(Int(dimension.height))"
+        request.setValue(dictionaryToJSON(requestDictionary), forHTTPHeaderField: "Dropbox-API-Arg")
+        self.session.dataTaskWithRequest(request) { (data, response, error) in
+            var image: ImageClass? = nil
+            if let r = response as? NSHTTPURLResponse, let result = r.allHeaderFields["Dropbox-API-Result"] as? String, let jsonResult = self.jsonToDictionary(result) {
+                if jsonResult["error"] != nil {
+                    completionHandler(image: nil, error: self.throwError(path, code: NSURLError.CannotDecodeRawData))
+                }
+            }
+            if let data = data {
+                image = ImageClass(data: data)
+            }
+            completionHandler(image: image, error: error)
+        }
+    }
+    
+    public func propertiesOfFileAtPath(path: String, completionHandler: ((propertiesDictionary: [String : AnyObject], keys: [String], error: ErrorType?) -> Void)) {
+        NotImplemented()
+    }
+}
+
+extension DropboxFileProvider: FileProvider {}
+
+// MARK: URLSession delegate
+extension DropboxFileProvider: NSURLSessionDataDelegate, NSURLSessionDownloadDelegate {
+    public func URLSession(session: NSURLSession, downloadTask: NSURLSessionDownloadTask, didFinishDownloadingToURL location: NSURL) {
+        return
+    }
+    
+    public func URLSession(session: NSURLSession, task: NSURLSessionTask, didSendBodyData bytesSent: Int64, totalBytesSent: Int64, totalBytesExpectedToSend: Int64) {
+        guard let desc = task.taskDescription, let json = jsonToDictionary(desc) else {
+            return
+        }
+        guard let type = json["type"] as? String, let source = json["source"] as? String else {
+            return
+        }
+        let dest = json["dest"] as? String
+        let op : FileOperation
+        switch type {
+        case "Create":
+            op = .Create(path: source)
+        case "Copy":
+            guard let dest = dest else { return }
+            op = .Copy(source: source, destination: dest)
+        case "Move":
+            guard let dest = dest else { return }
+            op = .Move(source: source, destination: dest)
+        case "Modify":
+            op = .Modify(path: source)
+        case "Remove":
+            op = .Remove(path: source)
+        case "Link":
+            guard let dest = dest else { return }
+            op = .Link(link: source, target: dest)
+        default:
+            return
+        }
+        
+        let progress = Float(totalBytesSent) / Float(totalBytesExpectedToSend)
+        
+        self.delegate?.fileproviderProgress(self, operation: op, progress: progress)
+    }
+    
+    public func URLSession(session: NSURLSession, downloadTask: NSURLSessionDownloadTask, didWriteData bytesWritten: Int64, totalBytesWritten: Int64, totalBytesExpectedToWrite: Int64) {
+        guard let desc = downloadTask.taskDescription, let json = jsonToDictionary(desc), let source = json["source"] as? String, dest = json["dest"] as? String else {
+            return
+        }
+        
+        self.delegate?.fileproviderProgress(self, operation: .Copy(source: source, destination: dest), progress: Float(totalBytesWritten) / Float(totalBytesExpectedToWrite))
+    }
+}

Sources/DropboxHelper.swift

@@ -0,0 +1,193 @@
+//
+//  DropboxHelper.swift
+//  FileProvider
+//
+//  Created by Amir Abbas Mousavian on 5/18/95.
+//
+//
+
+import Foundation
+
+public struct FileProviderDropboxError: ErrorType, CustomStringConvertible {
+    public let code: FileProviderHTTPErrorCode
+    public let path: String
+    public let errorDescription: String?
+    
+    public var description: String {
+        return code.description
+    }
+}
+
+public final class DropboxFileObject: FileObject {
+    public let serverTime: NSDate?
+    public let id: String?
+    public let rev: String?
+    
+    public init(name: String, path: String, size: Int64 = -1, serverTime: NSDate? = nil, modifiedDate: NSDate? = nil, fileType: FileType = .Regular, isHidden: Bool = false, isReadOnly: Bool = false, id: String? = nil, rev: String? = nil) {
+        self.serverTime = serverTime
+        self.id = id
+        self.rev = rev
+        super.init(absoluteURL: NSURL(string: path), name: name, path: path, size: size, createdDate: nil, modifiedDate: modifiedDate, fileType: fileType, isHidden: isHidden, isReadOnly: isReadOnly)
+    }
+}
+
+internal extension DropboxFileProvider {
+    func list(path: String, cursor: String? = nil, prevContents: [DropboxFileObject] = [], recursive: Bool = false, completionHandler: ((contents: [FileObject], cursor: String?, error: ErrorType?) -> Void)) {
+        var requestDictionary = [String: AnyObject]()
+        let url: NSURL
+        if let cursor = cursor {
+            url = NSURL(string: "https://api.dropboxapi.com/2/files/list_folder/continue")!
+            requestDictionary["cursor"] = cursor
+        } else {
+            url = NSURL(string: "https://api.dropboxapi.com/2/files/list_folder")!
+            requestDictionary["path"] = correctPath(path)
+            requestDictionary["recursive"] = recursive
+        }
+        let request = NSMutableURLRequest(URL: url)
+        request.HTTPMethod = "POST"
+        request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
+        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
+        request.HTTPBody = dictionaryToJSON(requestDictionary)?.dataUsingEncoding(NSUTF8StringEncoding)
+        let task = session.dataTaskWithRequest(request) { (data, response, error) in
+            var responseError: FileProviderDropboxError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderDropboxError(code: rCode, path: path, errorDescription: String(data: data ?? NSData(), encoding: NSUTF8StringEncoding))
+            }
+            if let data = data, let jsonStr = String(data: data, encoding: NSUTF8StringEncoding) {
+                let json = self.jsonToDictionary(jsonStr)
+                if let entries = json?["entries"] as? [AnyObject] where entries.count > 0 {
+                    var files = prevContents
+                    for entry in entries {
+                        if let entry = entry as? [String: AnyObject], let file = self.mapToFileObject(entry) {
+                            files.append(file)
+                        }
+                    }
+                    let ncursor = json?["cursor"] as? String
+                    let hasmore = (json?["has_more"] as? NSNumber)?.boolValue ?? false
+                    if hasmore {
+                        self.list(path, cursor: ncursor, prevContents: files, completionHandler: completionHandler)
+                    } else {
+                        completionHandler(contents: files, cursor: ncursor, error: responseError ?? error)
+                    }
+                    return
+                }
+            }
+            completionHandler(contents: [], cursor: nil, error: responseError ?? error)
+        }
+        task.resume()
+    }
+    
+    func upload_simple(targetPath: String, data: NSData, modifiedDate: NSDate = NSDate(), overwrite: Bool, operation: FileOperation, completionHandler: SimpleCompletionHandler) {
+        assert(data.length < 150*1024*1024, "Maximum size of allowed size to upload is 150MB")
+        var requestDictionary = [String: AnyObject]()
+        let url: NSURL
+        url = NSURL(string: "https://content.dropboxapi.com/2/files/upload")!
+        requestDictionary["path"] = correctPath(targetPath)
+        requestDictionary["mode"] = overwrite ? "overwrite" : "add"
+        let dateFormatter = NSDateFormatter()
+        dateFormatter.dateFormat = "yyyy'-'MM'-'dd'T'HH':'mm':'ssz"
+        requestDictionary["client_modified"] = dateFormatter.stringFromDate(modifiedDate)
+        let request = NSMutableURLRequest(URL: url)
+        request.HTTPMethod = "POST"
+        request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
+        request.setValue("application/octet-stream", forHTTPHeaderField: "Content-Type")
+        request.setValue(dictionaryToJSON(requestDictionary), forHTTPHeaderField: "Dropbox-API-Arg")
+        request.HTTPBody = data
+        let task = session.uploadTaskWithRequest(request, fromData: data) { (data, response, error) in
+            var responseError: FileProviderDropboxError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderDropboxError(code: rCode, path: targetPath, errorDescription: String(data: data ?? NSData(), encoding: NSUTF8StringEncoding))
+            }
+            defer {
+                self.delegateNotify(.Create(path: targetPath), error: responseError ?? error)
+            }
+            completionHandler?(error: responseError ?? error)
+        }
+        var dic: [String: AnyObject] = ["type": operation.description]
+        switch operation {
+        case .Create(path: let s):
+            dic["source"] = s
+        case .Copy(source: let s, destination: let d):
+            dic["source"] = s
+            dic["dest"] = d
+        case .Modify(path: let s):
+            dic["source"] = s
+        case .Move(source: let s, destination: let d):
+            dic["source"] = s
+            dic["dest"] = d
+        default:
+            break
+        }
+        task.taskDescription = self.dictionaryToJSON(dic)
+        task.resume()
+    }
+    
+    func search(startPath: String = "", query: String, start: Int = 0, maxResultPerPage: Int = 25, maxResults: Int = -1, foundItem:((file: DropboxFileObject) -> Void), completionHandler: ((error: ErrorType?) -> Void)) {
+        let url = NSURL(string: "https://api.dropboxapi.com/2/files/search")!
+        let request = NSMutableURLRequest(URL: url)
+        request.HTTPMethod = "POST"
+        request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
+        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
+        var requestDictionary: [String: AnyObject] = ["path": startPath]
+        requestDictionary["query"] = query
+        requestDictionary["start"] = start
+        requestDictionary["max_results"] = maxResultPerPage
+        request.HTTPBody = dictionaryToJSON(requestDictionary)?.dataUsingEncoding(NSUTF8StringEncoding)
+        let task = session.dataTaskWithRequest(request) { (data, response, error) in
+            var responseError: FileProviderDropboxError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderDropboxError(code: rCode, path: startPath, errorDescription: String(data: data ?? NSData(), encoding: NSUTF8StringEncoding))
+            }
+            if let data = data, let jsonStr = String(data: data, encoding: NSUTF8StringEncoding) {
+                let json = self.jsonToDictionary(jsonStr)
+                if let entries = json?["matches"] as? [AnyObject] where entries.count > 0 {
+                    for entry in entries {
+                        if let entry = entry as? [String: AnyObject], let file = self.mapToFileObject(entry) {
+                            foundItem(file: file)
+                        }
+                    }
+                    let rstart = json?["start"] as? Int
+                    let hasmore = (json?["more"] as? NSNumber)?.boolValue ?? false
+                    if hasmore, let rstart = rstart {
+                        self.search(startPath, query: query, start: rstart + entries.count, maxResultPerPage: maxResultPerPage, foundItem: foundItem, completionHandler: completionHandler)
+                    } else {
+                        completionHandler(error: responseError ?? error)
+                    }
+                    return
+                }
+            }
+            completionHandler(error: responseError ?? error)
+        }
+        task.resume()
+    }
+}
+
+internal extension DropboxFileProvider {
+    func mapToFileObject(jsonStr: String) -> DropboxFileObject? {
+        guard let json = self.jsonToDictionary(jsonStr) else { return nil }
+        return self.mapToFileObject(json)
+    }
+    
+    func mapToFileObject(json: [String: AnyObject]) -> DropboxFileObject? {
+        guard let name = json["name"] as? String else { return nil }
+        guard let path = json["path_display"] as? String else { return nil }
+        let size = (json["size"] as? NSNumber)?.longLongValue ?? -1
+        let serverTime = resolveDate(json["server_modified"] as? String ?? "")
+        let modifiedDate = resolveDate(json["client_modified"] as? String ?? "")
+        let isDirectory = (json[".tag"] as? String) == "folder"
+        let isReadonly = (json["sharing_info"]?["read_only"] as? NSNumber)?.boolValue ?? false
+        let id = json["id"] as? String
+        let rev = json["id"] as? String
+        return DropboxFileObject(name: name, path: path, size: size, serverTime: serverTime, modifiedDate: modifiedDate, fileType: isDirectory ? .Directory : .Regular, isReadOnly: isReadonly, id: id, rev: rev)
+    }
+    
+    func delegateNotify(operation: FileOperation, error: ErrorType?) {
+        dispatch_async(dispatch_get_main_queue(), {
+            if error == nil {
+                self.delegate?.fileproviderSucceed(self, operation: operation)
+            } else {
+                self.delegate?.fileproviderFailed(self, operation: operation)
+            }
+        })
+    }
+}

Sources/FPSStreamTask.swift

@@ -0,0 +1,523 @@
+//
+//  FPSStreamTask.swift
+//  FileProvider
+//
+//  Created by Amir Abbas Mousavian.
+//  Copyright © 2016 Mousavian. Distributed under MIT license.
+//
+
+import Foundation
+
+private var lasttaskIdAssociated = 1_000_000_000
+
+
+/// This class is a replica of NSURLSessionStreamTask with same api for iOS 7/8
+/// while it will fallback to NSURLSessionStreamTask in iOS 9.
+@objc
+public class FPSStreamTask: NSURLSessionTask, NSStreamDelegate {
+    private var inputStream: NSInputStream?
+    private var outputStream: NSOutputStream?
+    
+    private var dispatch_queue: dispatch_queue_t!
+    internal var _underlyingSession: NSURLSession
+    private var streamDelegate: FPSStreamDelegate? {
+        return (_underlyingSession.delegate as? FPSStreamDelegate)
+    }
+    private var _taskIdentifier: Int
+    
+    @available(iOS 9.0, OSX 10.11, *)
+    static var streamTasks = [Int: NSURLSessionStreamTask]()
+    
+    @available(iOS 9.0, OSX 10.11, *)
+    internal var _underlyingTask: NSURLSessionStreamTask? {
+        return FPSStreamTask.streamTasks[_taskIdentifier]
+    }
+    
+    public override var taskIdentifier: Int {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            return _underlyingTask!.taskIdentifier
+        } else {
+            return _taskIdentifier
+        }
+    }
+    
+    private var _state: NSURLSessionTaskState = .Suspended
+    override public var state: NSURLSessionTaskState {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            return _underlyingTask!.state
+        } else {
+            return _state
+        }
+    }
+    
+    override public var originalRequest: NSURLRequest? {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            return _underlyingTask!.originalRequest
+        } else {
+            return nil
+        }
+    }
+    
+    override public var currentRequest: NSURLRequest? {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            return _underlyingTask!.currentRequest
+        } else {
+            return nil
+        }
+    }
+    
+    private var _countOfBytesSent: Int64 = 0
+    private var _countOfBytesRecieved: Int64 = 0
+    
+    override public var countOfBytesSent: Int64 {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            return _underlyingTask!.countOfBytesSent
+        } else {
+            return _countOfBytesSent
+        }
+    }
+    
+    override public var countOfBytesReceived: Int64 {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            return _underlyingTask!.countOfBytesReceived
+        } else {
+            return _countOfBytesRecieved
+        }
+    }
+    
+    override public var countOfBytesExpectedToSend: Int64 {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            return _underlyingTask!.countOfBytesExpectedToSend
+        } else {
+            return Int64(dataToBeSent.length)
+        }
+    }
+    
+    override public var countOfBytesExpectedToReceive: Int64 {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            return _underlyingTask!.countOfBytesExpectedToReceive
+        } else {
+            return Int64(dataReceived.length)
+        }
+    }
+    
+    override public init() {
+        fatalError("Use NSURLSession.fpstreamTask() method")
+    }
+    
+    var host: (hostname: String, port: Int)?
+    var service: NSNetService?
+    
+    internal init(session: NSURLSession, host: String, port: Int) {
+        self._underlyingSession = session
+        if #available(iOS 9.0, OSX 10.11, *) {
+            let task = session.streamTaskWithHostName(host, port: port)
+            self._taskIdentifier = task.taskIdentifier
+            FPSStreamTask.streamTasks[_taskIdentifier] = task
+        } else {
+            lasttaskIdAssociated += 1
+            self._taskIdentifier = lasttaskIdAssociated
+            self.host = (host, port)
+            self.dispatch_queue = dispatch_queue_create("FSPStreamTask", DISPATCH_QUEUE_CONCURRENT)
+        }
+    }
+    
+    internal init(session: NSURLSession, netService: NSNetService) {
+        self._underlyingSession = session
+        if #available(iOS 9.0, OSX 10.11, *) {
+            let task = session.streamTaskWithNetService(netService)
+            self._taskIdentifier = task.taskIdentifier
+            FPSStreamTask.streamTasks[_taskIdentifier] = task
+        } else {
+            lasttaskIdAssociated += 1
+            self._taskIdentifier = lasttaskIdAssociated
+            self.service = netService
+            self.dispatch_queue = dispatch_queue_create("FSPStreamTask", DISPATCH_QUEUE_CONCURRENT)
+        }
+    }
+    
+    override public func cancel() {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            _underlyingTask!.cancel()
+        } else {
+            self._state = .Canceling
+            inputStream?.setValue(kCFBooleanTrue, forKey: kCFStreamPropertyShouldCloseNativeSocket as String)
+            outputStream?.setValue(kCFBooleanTrue, forKey: kCFStreamPropertyShouldCloseNativeSocket as String)
+            
+            self.inputStream?.close()
+            self.outputStream?.close()
+            
+            self.inputStream?.removeFromRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
+            self.outputStream?.removeFromRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
+            
+            self.inputStream?.delegate = nil
+            self.outputStream?.delegate = nil
+            
+            self.inputStream = nil
+            self.outputStream = nil
+            
+            self._state = .Completed
+            self._countOfBytesSent = 0
+            self._countOfBytesRecieved = 0
+        }
+    }
+    
+    var _error: NSError? = nil
+    override public var error: NSError? {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            return _underlyingTask!.error
+        } else {
+            return _error
+        }
+    }
+    
+    override public func suspend() {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            _underlyingTask!.suspend()
+        } else {
+            inputStream?.close()
+            outputStream?.close()
+            streamDelegate?.URLSession?(_underlyingSession, readClosedForStreamTask: self)
+            streamDelegate?.URLSession?(_underlyingSession, writeClosedForStreamTask: self)
+            self._state = .Suspended
+        }
+    }
+    
+    override public func resume() {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            _underlyingTask!.resume()
+        } else {
+            var readStream : Unmanaged<CFReadStream>?
+            var writeStream : Unmanaged<CFWriteStream>?
+            
+            if inputStream == nil || outputStream == nil {
+                if let host = host {
+                    let hostRef: CFString = NSString(string: host.hostname)
+                    CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, hostRef, UInt32(host.port), &readStream, &writeStream)
+                } else if let service = service {
+                    let cfnetService = CFNetServiceCreate(kCFAllocatorDefault, service.domain, service.type, service.name, Int32(service.port))
+                    CFStreamCreatePairWithSocketToNetService(kCFAllocatorDefault, cfnetService.takeRetainedValue(), &readStream, &writeStream)
+                }
+                
+                inputStream = readStream?.takeRetainedValue()
+                outputStream = writeStream?.takeRetainedValue()
+                guard let inputStream = inputStream, outputStream = outputStream else {
+                    return
+                }
+                streamDelegate?.URLSession?(self._underlyingSession, streamTask: self, didBecomeInputStream: inputStream, outputStream: outputStream)
+            }
+            
+            guard let inputStream = inputStream, outputStream = outputStream else {
+                return
+            }
+            
+            inputStream.delegate = self
+            outputStream.delegate = self
+            
+            dispatch_sync(dispatch_queue, { 
+                inputStream.scheduleInRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
+                outputStream.scheduleInRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
+            })
+            
+            inputStream.open()
+            outputStream.open()
+            
+            _state = .Running
+        }
+    }
+    
+    private let dataToBeSent: NSMutableData = NSMutableData()
+    private let dataReceived: NSMutableData = NSMutableData()
+    
+    /* Read minBytes, or at most maxBytes bytes and invoke the completion
+     * handler on the sessions delegate queue with the data or an error.
+     * If an error occurs, any outstanding reads will also fail, and new
+     * read requests will error out immediately.
+     */
+    public func readDataOfMinLength(minBytes: Int, maxLength maxBytes: Int, timeout: NSTimeInterval, completionHandler: (NSData?, Bool, NSError?) -> Void) {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            _underlyingTask!.readDataOfMinLength(minBytes, maxLength: maxBytes, timeout: timeout, completionHandler: completionHandler)
+        } else {
+            guard let inputStream = inputStream else {
+                return
+            }
+            var timedOut: Bool = false
+            dispatch_async(dispatch_queue) {
+                if timeout > 0 {
+                    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(timeout * 1_000_000_000)), self.dispatch_queue, {
+                        timedOut = true
+                        completionHandler(nil, inputStream.streamStatus == .AtEnd, inputStream.streamError)
+                    })
+                }
+                while (self.dataReceived.length == 0 || self.dataReceived.length < minBytes) && !timedOut {
+                    NSRunLoop.currentRunLoop().runUntilDate(NSDate(timeIntervalSinceNow: 0.1));
+                    NSThread.sleepForTimeInterval(0.1)
+                }
+                let dR = NSMutableData()
+                if self.dataReceived.length > maxBytes {
+                    let range = NSRange(location: 0, length: maxBytes - 1)
+                    dR.appendData(self.dataReceived.subdataWithRange(range))
+                    self.dataReceived.replaceBytesInRange(range, withBytes: nil, length: 0)
+                } else {
+                    dR.appendData(self.dataReceived)
+                    self.dataReceived.length = 0
+                }
+                completionHandler(dR, inputStream.streamStatus == .AtEnd, inputStream.streamError)
+            }
+        }
+    }
+    
+    /* Write the data completely to the underlying socket.  If all the
+     * bytes have not been written by the timeout, a timeout error will
+     * occur.  Note that invocation of the completion handler does not
+     * guarantee that the remote side has received all the bytes, only
+     * that they have been written to the kernel. */
+    public func writeData(data: NSData, timeout: NSTimeInterval, completionHandler: (NSError?) -> Void) {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            _underlyingTask!.writeData(data, timeout: timeout, completionHandler: completionHandler)
+        } else {
+            guard let outputStream = outputStream else {
+                return
+            }
+            var timedOut: Bool = false
+            dispatch_async(dispatch_queue) {
+                if timeout > 0 {
+                    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(timeout * 1_000_000_000)), self.dispatch_queue, {
+                        timedOut = true
+                        completionHandler(self._error)
+                    })
+                }
+                
+                self.dataToBeSent.appendData(data)
+                while !outputStream.hasSpaceAvailable && !timedOut {
+                    NSRunLoop.currentRunLoop().runUntilDate(NSDate(timeIntervalSinceNow: 0.1));
+                    NSThread.sleepForTimeInterval(0.1)
+                }
+                if self.dataToBeSent.length > 0 {
+                    let bytesWritten = outputStream.write(UnsafePointer(self.dataToBeSent.bytes), maxLength: self.dataToBeSent.length) ?? -1
+                    if bytesWritten > 0 {
+                        let range = NSRange(location: 0, length: bytesWritten)
+                        self.dataToBeSent.replaceBytesInRange(range, withBytes: nil, length: 0)
+                        self._countOfBytesSent += bytesWritten
+                        completionHandler(nil)
+                    } else {
+                        self._error = outputStream.streamError
+                        completionHandler(outputStream.streamError)
+                    }
+                }
+            }
+        }
+    }
+    
+    /* -captureStreams completes any already enqueued reads
+     * and writes, and then invokes the
+     * URLSession:streamTask:didBecomeInputStream:outputStream: delegate
+     * message. When that message is received, the task object is
+     * considered completed and will not receive any more delegate
+     * messages. */
+    public func captureStreams() {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            _underlyingTask!.captureStreams()
+        } else {
+            guard let outputStream = outputStream, let inputStream = inputStream else {
+                return
+            }
+            dispatch_async(dispatch_queue) {
+                self.write(false)
+                while inputStream.streamStatus != .AtEnd {
+                    NSRunLoop.currentRunLoop().runUntilDate(NSDate(timeIntervalSinceNow: 0.1));
+                    NSThread.sleepForTimeInterval(0.1)
+                }
+                self.streamDelegate?.URLSession?(self._underlyingSession, streamTask: self, didBecomeInputStream: inputStream, outputStream: outputStream)
+            }
+        }
+    }
+    
+    /* Enqueue a request to close the write end of the underlying socket.
+     * All outstanding IO will complete before the write side of the
+     * socket is closed.  The server, however, may continue to write bytes
+     * back to the client, so best practice is to continue reading from
+     * the server until you receive EOF.
+     */
+    public func closeWrite() {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            _underlyingTask!.closeWrite()
+        } else {
+            dispatch_async(dispatch_queue, { 
+                self.write(true)
+            })
+        }
+    }
+    
+    private func write(close: Bool) {
+        guard let outputStream = outputStream else {
+            return
+        }
+        while self.dataToBeSent.length > 0 {
+            let bytesWritten = outputStream.write(UnsafePointer(self.dataToBeSent.bytes), maxLength: self.dataToBeSent.length) ?? -1
+            if bytesWritten > 0 {
+                let range = NSRange(location: 0, length: bytesWritten)
+                self.dataToBeSent.replaceBytesInRange(range, withBytes: nil, length: 0)
+                self._countOfBytesSent += bytesWritten
+            } else {
+                self._error = outputStream.streamError
+            }
+            if self.dataToBeSent.length == 0 {
+                break
+            }
+            NSRunLoop.currentRunLoop().runUntilDate(NSDate(timeIntervalSinceNow: 0.1));
+            NSThread.sleepForTimeInterval(0.1)
+        }
+        if close {
+            outputStream.close()
+            self.streamDelegate?.URLSession?(self._underlyingSession, writeClosedForStreamTask: self)
+        }
+    }
+    
+    /* Enqueue a request to close the read side of the underlying socket.
+     * All outstanding IO will complete before the read side is closed.
+     * You may continue writing to the server.
+     */
+    public func closeRead() {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            _underlyingTask!.closeRead()
+        } else {
+            guard let inputStream = inputStream else {
+                return
+            }
+            dispatch_async(dispatch_queue) {
+                while inputStream.streamStatus != .AtEnd {
+                    NSRunLoop.currentRunLoop().runUntilDate(NSDate(timeIntervalSinceNow: 0.1));
+                    NSThread.sleepForTimeInterval(0.1)
+                }
+                inputStream.close()
+                self.streamDelegate?.URLSession?(self._underlyingSession, readClosedForStreamTask: self)
+            }
+        }
+    }
+    
+    /*
+     * Begin encrypted handshake.  The hanshake begins after all pending
+     * IO has completed.  TLS authentication callbacks are sent to the
+     * session's -URLSession:task:didReceiveChallenge:completionHandler:
+     */
+    public func startSecureConnection() {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            _underlyingTask!.startSecureConnection()
+        } else {
+            inputStream!.setProperty(NSStreamSocketSecurityLevelNegotiatedSSL, forKey: NSStreamSocketSecurityLevelKey)
+            outputStream!.setProperty(NSStreamSocketSecurityLevelNegotiatedSSL, forKey: NSStreamSocketSecurityLevelKey)
+        }
+    }
+    
+    /*
+     * Cleanly close a secure connection after all pending secure IO has
+     * completed.
+     */
+    public func stopSecureConnection() {
+        if #available(iOS 9.0, OSX 10.11, *) {
+            _underlyingTask!.stopSecureConnection()
+        } else {
+            inputStream!.setProperty(NSStreamSocketSecurityLevelNone, forKey: NSStreamSocketSecurityLevelKey)
+            outputStream!.setProperty(NSStreamSocketSecurityLevelNone, forKey: NSStreamSocketSecurityLevelKey)
+        }
+    }
+    
+    public func stream(aStream: NSStream, handleEvent eventCode: NSStreamEvent) {
+        switch (eventCode) {
+        case NSStreamEvent.ErrorOccurred:
+            self._error = aStream.streamError
+            streamDelegate?.URLSession?(_underlyingSession, task: self, didCompleteWithError: error)
+        case NSStreamEvent.EndEncountered:
+            break
+        case NSStreamEvent.None:
+            break
+        case NSStreamEvent.OpenCompleted:
+            break
+        case NSStreamEvent.HasBytesAvailable:
+            var buffer = [UInt8](count: 2048, repeatedValue: 0)
+            if (aStream == inputStream) {
+                while (inputStream!.hasBytesAvailable ?? false) {
+                    let len = inputStream!.read(&buffer, maxLength: buffer.count)
+                    if len > 0 {
+                        dataReceived.appendBytes(&buffer, length: len)
+                        self._countOfBytesRecieved += len
+                    }
+                }
+            }
+        case NSStreamEvent.HasSpaceAvailable:
+            break
+        default:
+            break
+        }
+    }
+}
+
+extension NSURLSession {
+    /* Creates a bidirectional stream task to a given host and port.
+     */
+    public func fpstreamTaskWithHostName(hostname: String, port: Int) -> FPSStreamTask {
+        return FPSStreamTask(session: self, host: hostname, port: port)
+    }
+    
+    /* Creates a bidirectional stream task with an NSNetService to identify the endpoint.
+     * The NSNetService will be resolved before any IO completes.
+     */
+    public func fpstreamTaskWithNetService(service: NSNetService) -> FPSStreamTask {
+        return fpstreamTaskWithNetService(service)
+    }
+}
+
+@objc
+public protocol FPSStreamDelegate : NSURLSessionTaskDelegate {
+    
+    /* Indiciates that the read side of a connection has been closed.  Any
+     * outstanding reads complete, but future reads will immediately fail.
+     * This may be sent even when no reads are in progress. However, when
+     * this delegate message is received, there may still be bytes
+     * available.  You only know that no more bytes are available when you
+     * are able to read until EOF. */
+    optional func URLSession(session: NSURLSession, readClosedForStreamTask streamTask: FPSStreamTask)
+    
+    /* Indiciates that the write side of a connection has been closed.
+     * Any outstanding writes complete, but future writes will immediately
+     * fail.
+     */
+    optional func URLSession(session: NSURLSession, writeClosedForStreamTask streamTask: FPSStreamTask)
+    
+    /* A notification that the system has determined that a better route
+     * to the host has been detected (eg, a wi-fi interface becoming
+     * available.)  This is a hint to the delegate that it may be
+     * desirable to create a new task for subsequent work.  Note that
+     * there is no guarantee that the future task will be able to connect
+     * to the host, so callers should should be prepared for failure of
+     * reads and writes over any new interface. */
+    optional func URLSession(session: NSURLSession, betterRouteDiscoveredForStreamTask streamTask: FPSStreamTask)
+    
+    /* The given task has been completed, and unopened NSInputStream and
+     * NSOutputStream objects are created from the underlying network
+     * connection.  This will only be invoked after all enqueued IO has
+     * completed (including any necessary handshakes.)  The streamTask
+     * will not receive any further delegate messages.
+     */
+    optional func URLSession(session: NSURLSession, streamTask: FPSStreamTask, didBecomeInputStream inputStream: NSInputStream, outputStream: NSOutputStream)
+}
+
+private let ports = ["http": 80,
+                            "https": 443,
+                            "smb": 445,
+                            "ftp": 21,
+                            "sftp": 22,
+                            "sftp": 2121,
+                            "telnet": 23,
+                            "pop": 110,
+                            "smtp": 25,
+                            "imap": 143]
+private let securePorts =  ["https": 443,
+                                   "smb": 445,
+                                   "sftp": 22,
+                                   "sftp": 2121,
+                                   "telnet": 992,
+                                   "pop": 995,
+                                   "smtp": 465,
+                                   "imap": 993]

Sources/FileProvider.h

@@ -0,0 +1,35 @@
+//
+//  FileProvider iOS.h
+//  FileProvider iOS
+//
+//  Created by Amir Abbas Mousavian on 5/6/95.
+//
+//
+#if TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
+#import <UIKit/UIKit.h>
+//! Project version number for FileProvider iOS.
+FOUNDATION_EXPORT double FileProvider_iOSVersionNumber;
+//! Project version string for FileProvider iOS.
+FOUNDATION_EXPORT const unsigned char FileProvider_iOSVersionString[];
+
+#elif defined TARGET_OS_TV
+#import <UIKit/UIKit.h>
+//! Project version number for FileProvider tvOS.
+FOUNDATION_EXPORT double FileProvider_tvOSVersionNumber;
+//! Project version string for FileProvider tvOS.
+FOUNDATION_EXPORT const unsigned char FileProvider_tvOSVersionString[];
+
+#elif defined TARGET_OS_MAC
+#import <Cocoa/Cocoa.h>
+//! Project version number for FileProvider OSX.
+FOUNDATION_EXPORT double FileProvider_OSXVersionNumber;
+//! Project version string for FileProvider OSX.
+FOUNDATION_EXPORT const unsigned char FileProvider_OSXVersionString[];
+
+#else
+// Unsupported platform
+#endif
+
+// In this header, you should import all the public headers of your framework using statements like #import <FileProvider_iOS/PublicHeader.h>
+
+

Sources/FileProvider.swift

@@ -0,0 +1,371 @@
+//
+//  FileProvider.swift
+//  FileProvider
+//
+//  Created by Amir Abbas Mousavian.
+//  Copyright © 2016 Mousavian. Distributed under MIT license.
+//
+
+import Foundation
+#if os(iOS) || os(tvOS)
+import UIKit
+public typealias ImageClass = UIImage
+#elseif os(OSX)
+import Cocoa
+public typealias ImageClass = NSImage
+#endif
+
+public enum FileType: String {
+    case Directory
+    case Regular
+    case SymbolicLink
+    case Socket
+    case CharacterSpecial
+    case BlockSpecial
+    case NamedPipe
+    case Unknown
+    
+    public init(urlResourceTypeValue: String) {
+        switch urlResourceTypeValue {
+        case NSURLFileResourceTypeNamedPipe: self = .NamedPipe
+        case NSURLFileResourceTypeCharacterSpecial: self = .CharacterSpecial
+        case NSURLFileResourceTypeDirectory: self = .Directory
+        case NSURLFileResourceTypeBlockSpecial: self = .BlockSpecial
+        case NSURLFileResourceTypeRegular: self = .Regular
+        case NSURLFileResourceTypeSymbolicLink: self = .SymbolicLink
+        case NSURLFileResourceTypeSocket: self = .Socket
+        case NSURLFileResourceTypeUnknown: self = .Unknown
+        default: self = .Unknown
+        }
+    }
+    
+    public init(fileTypeValue: String) {
+        switch fileTypeValue {
+        case NSFileTypeCharacterSpecial: self = .CharacterSpecial
+        case NSFileTypeDirectory: self = .Directory
+        case NSFileTypeBlockSpecial: self = .BlockSpecial
+        case NSFileTypeRegular: self = .Regular
+        case NSFileTypeSymbolicLink: self = .SymbolicLink
+        case NSFileTypeSocket: self = .Socket
+        case NSFileTypeUnknown: self = .Unknown
+        default: self = .Unknown
+        }
+    }
+}
+
+public protocol FoundationErrorEnum {
+    init? (rawValue: Int)
+    var rawValue: Int { get }
+}
+
+extension NSURLError: FoundationErrorEnum {}
+extension NSCocoaError: FoundationErrorEnum {}
+
+public class FileObject {
+    public let absoluteURL: NSURL?
+    public let name: String
+    public let path: String
+    public let size: Int64
+    public let createdDate: NSDate?
+    public let modifiedDate: NSDate?
+    public let fileType: FileType
+    public let isHidden: Bool
+    public let isReadOnly: Bool
+    
+    public init(absoluteURL: NSURL? = nil, name: String, path: String, size: Int64 = -1, createdDate: NSDate? = nil, modifiedDate: NSDate? = nil, fileType: FileType = .Regular, isHidden: Bool = false, isReadOnly: Bool = false) {
+        self.absoluteURL = absoluteURL
+        self.name = name
+        self.path = path
+        self.size = size
+        self.createdDate = createdDate
+        self.modifiedDate = modifiedDate
+        self.fileType = fileType
+        self.isHidden = isHidden
+        self.isReadOnly = isReadOnly
+    }
+    
+    public var isDirectory: Bool {
+        return self.fileType == .Directory
+    }
+    
+    public var isSymLink: Bool {
+        return self.fileType == .SymbolicLink
+    }
+}
+
+
+public typealias SimpleCompletionHandler = ((error: ErrorType?) -> Void)?
+
+public protocol FileProviderBasic: class {
+    var type: String { get }
+    var isPathRelative: Bool { get }
+    var baseURL: NSURL? { get }
+    var currentPath: String { get set }
+    var dispatch_queue: dispatch_queue_t { get set }
+    var delegate: FileProviderDelegate? { get set }
+    var credential: NSURLCredential? { get }
+    
+    /**
+     *
+    */
+    func contentsOfDirectoryAtPath(path: String, completionHandler: ((contents: [FileObject], error: ErrorType?) -> Void))
+    func attributesOfItemAtPath(path: String, completionHandler: ((attributes: FileObject?, error: ErrorType?) -> Void))
+    
+    func storageProperties(completionHandler: ((total: Int64, used: Int64) -> Void))
+}
+
+public protocol FileProviderOperations: FileProviderBasic {
+    var fileOperationDelegate : FileOperationDelegate? { get set }
+    
+    func createFolder(folderName: String, atPath: String, completionHandler: SimpleCompletionHandler)
+    func createFile(fileAttribs: FileObject, atPath: String, contents data: NSData?, completionHandler: SimpleCompletionHandler)
+    func moveItemAtPath(path: String, toPath: String, overwrite: Bool, completionHandler: SimpleCompletionHandler)
+    func copyItemAtPath(path: String, toPath: String, overwrite: Bool, completionHandler: SimpleCompletionHandler)
+    func removeItemAtPath(path: String, completionHandler: SimpleCompletionHandler)
+    
+    func copyLocalFileToPath(localFile: NSURL, toPath: String, completionHandler: SimpleCompletionHandler)
+    func copyPathToLocalFile(path: String, toLocalURL: NSURL, completionHandler: SimpleCompletionHandler)
+}
+
+public protocol FileProviderReadWrite: FileProviderBasic {
+    func contentsAtPath(path: String, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void))
+    func contentsAtPath(path: String, offset: Int64, length: Int, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void))
+    func writeContentsAtPath(path: String, contents data: NSData, atomically: Bool, completionHandler: SimpleCompletionHandler)
+    
+    func searchFilesAtPath(path: String, recursive: Bool, query: String, foundItemHandler: ((FileObject) -> Void)?, completionHandler: ((files: [FileObject], error: ErrorType?) -> Void))
+}
+
+public protocol FileProviderMonitor: FileProviderBasic {
+    func registerNotifcation(path: String, eventHandler: (() -> Void))
+    func unregisterNotifcation(path: String)
+    func isRegisteredForNotification(path: String) -> Bool
+}
+
+public protocol FileProvider: FileProviderBasic, FileProviderOperations, FileProviderReadWrite {
+    
+}
+
+extension FileProviderBasic {
+    public var bareCurrentPath: String {
+        return currentPath.stringByTrimmingCharactersInSet(NSCharacterSet(charactersInString: ". /"))
+    }
+    
+    public func absoluteURL(path: String? = nil) -> NSURL {
+        let rpath: String
+        if let path = path {
+            rpath = path
+        } else {
+            rpath = self.currentPath
+        }
+        if isPathRelative, let baseURL = baseURL {
+            if rpath.hasPrefix("/") && baseURL.uw_absoluteString.hasSuffix("/") {
+                var npath = rpath
+                npath.removeAtIndex(npath.startIndex)
+                return baseURL.uw_URLByAppendingPathComponent(npath)
+            } else {
+                return baseURL.uw_URLByAppendingPathComponent(rpath)
+            }
+        } else {
+            return NSURL(fileURLWithPath: rpath).URLByStandardizingPath!
+        }
+    }
+    
+    public func relativePathOf(url url: NSURL) -> String {
+        guard let baseURL = self.baseURL else { return url.uw_absoluteString }
+        return url.URLByStandardizingPath!.uw_absoluteString.stringByReplacingOccurrencesOfString(baseURL.uw_absoluteString, withString: "/").stringByRemovingPercentEncoding!
+    }
+    
+    internal func correctPath(path: String?) -> String? {
+        guard let path = path else { return nil }
+        var p = path.hasPrefix("/") ? path : "/" + path
+        if p.hasSuffix("/") {
+            p.removeAtIndex(p.endIndex.predecessor())
+        }
+        return p
+    }
+    
+    public func fileByUniqueName(filePath: String) -> String {
+        let fileUrl = NSURL(fileURLWithPath: filePath)
+        let dirPath = fileUrl.URLByDeletingLastPathComponent?.path ?? ""
+        guard let fileName = fileUrl.URLByDeletingPathExtension?.lastPathComponent else {
+            return filePath
+        }
+        let fileExt = fileUrl.pathExtension ?? ""
+        var result = fileName
+        let group = dispatch_group_create()
+        dispatch_group_enter(group)
+        self.contentsOfDirectoryAtPath(dirPath) { (contents, error) in
+            var bareFileName = fileName
+            let number = Int(fileName.componentsSeparatedByString(" ").filter {
+                !$0.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet()).isEmpty
+                }.last ?? "noname")
+            if let _ = number {
+                result = fileName.componentsSeparatedByString(" ").filter {
+                    !$0.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet()).isEmpty
+                    }.dropLast().joinWithSeparator(" ")
+                bareFileName = result
+            }
+            var i = number ?? 2
+            let similiar = contents.map {
+                $0.absoluteURL?.lastPathComponent ?? $0.name
+            }.filter {
+                $0.hasPrefix(result) && (!fileExt.isEmpty && $0.hasSuffix("." + fileExt))
+            }
+            while similiar.contains(result + (!fileExt.isEmpty ? "." + fileExt : "")) {
+                result = "\(bareFileName) \(i)"
+                i += 1
+            }
+            dispatch_group_leave(group)
+        }
+        dispatch_group_wait(group, DISPATCH_TIME_FOREVER)
+        let finalFile = result + (!fileExt.isEmpty ? "." + fileExt : "")
+        return (dirPath as NSString).stringByAppendingPathComponent(finalFile)
+    }
+    
+    internal func throwError(path: String, code: FoundationErrorEnum) -> NSError {
+        let fileURL = self.absoluteURL(path)
+        let domain: String
+        switch code {
+        case is NSURLError:
+            domain = NSURLErrorDomain
+        default:
+            domain = NSCocoaErrorDomain
+        }
+        return NSError(domain: domain, code: code.rawValue, userInfo: [NSURLErrorFailingURLErrorKey: fileURL, NSURLErrorFailingURLStringErrorKey: fileURL.uw_absoluteString])
+    }
+    
+    internal func NotImplemented() {
+        assert(false, "method not implemented")
+    }
+    
+    internal func resolveDate(dateString: String) -> NSDate? {
+        let dateFor: NSDateFormatter = NSDateFormatter()
+        dateFor.locale = NSLocale(localeIdentifier: "en_US")
+        dateFor.dateFormat = "EEE',' dd' 'MMM' 'yyyy HH':'mm':'ss zzz"
+        if let rfc1123 = dateFor.dateFromString(dateString) {
+            return rfc1123
+        }
+        dateFor.dateFormat = "EEEE',' dd'-'MMM'-'yy HH':'mm':'ss z"
+        if let rfc850 = dateFor.dateFromString(dateString) {
+            return rfc850
+        }
+        dateFor.dateFormat = "EEE MMM d HH':'mm':'ss yyyy"
+        if let asctime = dateFor.dateFromString(dateString) {
+            return asctime
+        }
+        dateFor.dateFormat = "yyyy'-'MM'-'dd'T'HH':'mm':'ssz"
+        if let isotime = dateFor.dateFromString(dateString) {
+            return isotime
+        }
+        //self.init()
+        return nil
+    }
+    
+    internal func jsonToDictionary(jsonString: String) -> [String: AnyObject]? {
+        guard let data = jsonString.dataUsingEncoding(NSUTF8StringEncoding) else {
+            return nil
+        }
+        if let dic = try? NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions()) as? [String: AnyObject] {
+            return dic
+        }
+        return nil
+    }
+    
+    internal func dictionaryToJSON(dictionary: [String: AnyObject]) -> String? {
+        if let data = try? NSJSONSerialization.dataWithJSONObject(dictionary, options: NSJSONWritingOptions()) {
+            return String(data: data, encoding: NSUTF8StringEncoding)
+        }
+        return nil
+    }
+}
+
+
+public protocol ExtendedFileProvider: FileProvider {
+    func thumbnailOfFileSupported(path: String) -> Bool
+    func propertiesOfFileSupported(path: String) -> Bool
+    func thumbnailOfFileAtPath(path: String, dimension: CGSize, completionHandler: ((image: ImageClass?, error: ErrorType?) -> Void))
+    func propertiesOfFileAtPath(path: String, completionHandler: ((propertiesDictionary: [String: AnyObject], keys: [String], error: ErrorType?) -> Void))
+}
+
+public enum FileOperation: CustomStringConvertible {
+    case Create (path: String)
+    case Copy   (source: String, destination: String)
+    case Move   (source: String, destination: String)
+    case Modify (path: String)
+    case Remove (path: String)
+    case Link   (link: String, target: String)
+    
+    public var description: String {
+        switch self {
+        case .Create(path: _): return "Create"
+        case .Copy(source: _, destination: _): return "Copy"
+        case .Move(source: _, destination: _): return "Move"
+        case .Modify(path: _): return "Modify"
+        case .Remove(path: _): return "Remove"
+        case .Link(link: _, target: _): return "Link"
+        }
+    }
+    
+    internal var actionDescription: String {
+        switch self {
+        case .Create(path: _): return "Creating"
+        case .Copy(source: _, destination: _): return "Copying"
+        case .Move(source: _, destination: _): return "Moving"
+        case .Modify(path: _): return "Modifying"
+        case .Remove(path: _): return "Removing"
+        case .Link(link: _, target: _): return "Linking"
+        }
+    }
+    
+}
+
+public protocol FileProviderDelegate: class {
+    func fileproviderSucceed(fileProvider: FileProviderOperations, operation: FileOperation)
+    func fileproviderFailed(fileProvider: FileProviderOperations, operation: FileOperation)
+    func fileproviderProgress(fileProvider: FileProviderOperations, operation: FileOperation, progress: Float)
+}
+
+public protocol FileOperationDelegate: class {
+    
+    /// fileProvider(_:shouldOperate:) gives the delegate an opportunity to filter the file operation. Returning true from this method will allow the copy to happen. Returning false from this method causes the item in question to be skipped. If the item skipped was a directory, no children of that directory will be subject of the operation, nor will the delegate be notified of those children.
+    func fileProvider(fileProvider: FileProviderOperations, shouldDoOperation operation: FileOperation) -> Bool
+    
+    /// fileProvider(_:shouldProceedAfterError:copyingItemAtPath:toPath:) gives the delegate an opportunity to recover from or continue copying after an error. If an error occurs, the error object will contain an ErrorType indicating the problem. The source path and destination paths are also provided. If this method returns true, the FileProvider instance will continue as if the error had not occurred. If this method returns false, the NSFileManager instance will stop copying, return false from copyItemAtPath:toPath:error: and the error will be provied there.
+    func fileProvider(fileProvider: FileProviderOperations, shouldProceedAfterError error: ErrorType, operation: FileOperation) -> Bool
+}
+
+// THESE ARE METHODS TO PROVIDE COMPATIBILITY WITH SWIFT 2.3 SIMOULTANIOUSLY!
+
+internal extension NSURL {
+    var uw_scheme: String {
+        #if swift(>=2.3)
+            return self.scheme ?? ""
+        #else
+            return self.scheme
+        #endif
+    }
+    
+    var uw_absoluteString: String {
+        #if swift(>=2.3)
+            return self.absoluteString ?? ""
+        #else
+            return self.absoluteString
+        #endif
+    }
+    
+    func uw_URLByAppendingPathComponent(pathComponent: String) -> NSURL {
+        #if swift(>=2.3)
+            return self.URLByAppendingPathComponent(pathComponent)!
+        #else
+            return self.URLByAppendingPathComponent(pathComponent)
+        #endif
+    }
+    
+    func uw_URLByAppendingPathExtension(pathExtension: String) -> NSURL {
+        #if swift(>=2.3)
+            return self.URLByAppendingPathExtension(pathExtension)!
+        #else
+            return self.URLByAppendingPathExtension(pathExtension)
+        #endif
+    }
+}

Sources/LocalFileProvider.swift

@@ -9,32 +9,41 @@
 import Foundation
 
 public final class LocalFileObject: FileObject {
-    let allocatedSize: Int64
+    public let allocatedSize: Int64
     
-    init(absoluteURL: NSURL, name: String, size: Int64, allocatedSize: Int64, createdDate: NSDate?, modifiedDate: NSDate?, fileType: FileType, isHidden: Bool, isReadOnly: Bool) {
+    public init(absoluteURL: NSURL, name: String, path: String, size: Int64, allocatedSize: Int64, createdDate: NSDate?, modifiedDate: NSDate?, fileType: FileType, isHidden: Bool, isReadOnly: Bool) {
         self.allocatedSize = allocatedSize
-        super.init(absoluteURL: absoluteURL, name: name, size: size, createdDate: createdDate, modifiedDate: modifiedDate, fileType: fileType, isHidden: isHidden, isReadOnly: isReadOnly)
+        super.init(absoluteURL: absoluteURL, name: name, path: path, size: size, createdDate: createdDate, modifiedDate: modifiedDate, fileType: fileType, isHidden: isHidden, isReadOnly: isReadOnly)
     }
 }
 
 public class LocalFileProvider: FileProvider, FileProviderMonitor {
-    public let type = "NSFileManager"
+    public let type = "Local"
     public var isPathRelative: Bool = true
     public var baseURL: NSURL? = LocalFileProvider.defaultBaseURL()
     public var currentPath: String = ""
     public var dispatch_queue: dispatch_queue_t
-    public var delegate: FileProviderDelegate?
+    public var operation_queue: dispatch_queue_t
+    public weak var delegate: FileProviderDelegate?
     public let credential: NSURLCredential? = nil
         
-    let fileManager = NSFileManager()
+    public let fileManager = NSFileManager()
+    public let opFileManager = NSFileManager()
+    private var fileProviderManagerDelegate: LocalFileProviderManagerDelegate? = nil
     
-    init () {
-        dispatch_queue = dispatch_queue_create("FileProvider.\(type)", DISPATCH_QUEUE_SERIAL)
+    public init () {
+        dispatch_queue = dispatch_queue_create("FileProvider.\(type)", DISPATCH_QUEUE_CONCURRENT)
+        operation_queue = dispatch_queue_create("FileProvider.\(type).Operation", DISPATCH_QUEUE_SERIAL)
+        fileProviderManagerDelegate = LocalFileProviderManagerDelegate(provider: self)
+        opFileManager.delegate = fileProviderManagerDelegate
     }
     
-    init (baseURL: NSURL) {
+    public init (baseURL: NSURL) {
         self.baseURL = baseURL
-        dispatch_queue = dispatch_queue_create("FileProvider.\(type)", DISPATCH_QUEUE_SERIAL)
+        dispatch_queue = dispatch_queue_create("FileProvider.\(type)", DISPATCH_QUEUE_CONCURRENT)
+        operation_queue = dispatch_queue_create("FileProvider.\(type).Operation", DISPATCH_QUEUE_SERIAL)
+        fileProviderManagerDelegate = LocalFileProviderManagerDelegate(provider: self)
+        opFileManager.delegate = fileProviderManagerDelegate
     }
     
     private static func defaultBaseURL() -> NSURL {
@@ -56,7 +65,7 @@ public class LocalFileProvider: FileProvider, FileProviderMonitor {
         }
     }
     
-    private func attributesOfItemAtURL(fileURL: NSURL) -> LocalFileObject {
+    internal func attributesOfItemAtURL(fileURL: NSURL) -> LocalFileObject {
         var namev, sizev, allocated, filetypev, creationDatev, modifiedDatev, hiddenv, readonlyv: AnyObject?
         _ = try? fileURL.getResourceValue(&namev, forKey: NSURLNameKey)
         _ = try? fileURL.getResourceValue(&sizev, forKey: NSURLFileSizeKey)
@@ -66,20 +75,35 @@ public class LocalFileProvider: FileProvider, FileProviderMonitor {
         _ = try? fileURL.getResourceValue(&filetypev, forKey: NSURLFileResourceTypeKey)
         _ = try? fileURL.getResourceValue(&hiddenv, forKey: NSURLIsHiddenKey)
         _ = try? fileURL.getResourceValue(&readonlyv, forKey: NSURLVolumeIsReadOnlyKey)
-        let fileAttr = LocalFileObject(absoluteURL: fileURL, name: namev as! String, size: sizev?.longLongValue ?? -1, allocatedSize: allocated?.longLongValue ?? -1, createdDate: creationDatev as? NSDate, modifiedDate: modifiedDatev as? NSDate, fileType: FileType(urlResourceTypeValue: filetypev as? String ?? ""), isHidden: hiddenv?.boolValue ?? false, isReadOnly: readonlyv?.boolValue ?? false)
+        let path: String
+        if isPathRelative {
+            path = self.relativePathOf(url: fileURL)
+        } else {
+            path = fileURL.path!
+        }
+        let fileAttr = LocalFileObject(absoluteURL: fileURL, name: namev as! String, path: path, size: sizev?.longLongValue ?? -1, allocatedSize: allocated?.longLongValue ?? -1, createdDate: creationDatev as? NSDate, modifiedDate: modifiedDatev as? NSDate, fileType: FileType(urlResourceTypeValue: filetypev as? String ?? ""), isHidden: hiddenv?.boolValue ?? false, isReadOnly: readonlyv?.boolValue ?? false)
         return fileAttr
     }
     
+    public func storageProperties(completionHandler: ((total: Int64, used: Int64) -> Void)) {
+        let dict = (try? NSFileManager.defaultManager().attributesOfFileSystemForPath(baseURL?.path ?? "/")) as NSDictionary?;
+        let totalSize = dict?.objectForKey(NSFileSystemSize)?.longLongValue ?? -1;
+        let freeSize = dict?.objectForKey(NSFileSystemFreeSize)?.longLongValue ?? 0;
+        completionHandler(total: totalSize, used: totalSize - freeSize)
+    }
+    
     public func attributesOfItemAtPath(path: String, completionHandler: ((attributes: FileObject?, error: ErrorType?) -> Void)) {
         dispatch_async(dispatch_queue) {
             completionHandler(attributes: self.attributesOfItemAtURL(self.absoluteURL(path)), error: nil)
         }
     }
     
+    public weak var fileOperationDelegate : FileOperationDelegate?
+    
     public func createFolder(folderName: String, atPath: String, completionHandler: SimpleCompletionHandler) {
-        dispatch_async(dispatch_queue) {
+        dispatch_async(operation_queue) {
             do {
-                try self.fileManager.createDirectoryAtURL(self.absoluteURL(atPath).URLByAppendingPathComponent(folderName), withIntermediateDirectories: true, attributes: [:])
+                try self.opFileManager.createDirectoryAtURL(self.absoluteURL(atPath).uw_URLByAppendingPathComponent(folderName), withIntermediateDirectories: true, attributes: [:])
                 completionHandler?(error: nil)
                 dispatch_async(dispatch_get_main_queue(), {
                     self.delegate?.fileproviderSucceed(self, operation: .Create(path: (atPath as NSString).stringByAppendingPathComponent(folderName) + "/"))
@@ -94,8 +118,8 @@ public class LocalFileProvider: FileProvider, FileProviderMonitor {
     }
     
     public func createFile(fileAttribs: FileObject, atPath: String, contents data: NSData?, completionHandler: SimpleCompletionHandler) {
-        dispatch_async(dispatch_queue) {
-            let fileURL = self.absoluteURL(atPath).URLByAppendingPathComponent(fileAttribs.name)
+        dispatch_async(operation_queue) {
+            let fileURL = self.absoluteURL(atPath).uw_URLByAppendingPathComponent(fileAttribs.name)
             var attributes = [String : AnyObject]()
             if let createdDate = fileAttribs.createdDate {
                 attributes[NSFileCreationDate] = createdDate
@@ -106,7 +130,7 @@ public class LocalFileProvider: FileProvider, FileProviderMonitor {
             if fileAttribs.isReadOnly {
                 attributes[NSFilePosixPermissions] = NSNumber(short: 365 /*555 o*/)
             }
-            let success = self.fileManager.createFileAtPath(fileURL.path!, contents: data, attributes: attributes)
+            let success = self.opFileManager.createFileAtPath(fileURL.path!, contents: data, attributes: attributes)
             if success {
                 do {
                     try fileURL.setResourceValue(fileAttribs.isHidden, forKey: NSURLIsHiddenKey)
@@ -126,13 +150,13 @@ public class LocalFileProvider: FileProvider, FileProviderMonitor {
     
     public func moveItemAtPath(path: String, toPath: String, overwrite: Bool = false, completionHandler: SimpleCompletionHandler) {
         // FIXME: progress
-        dispatch_async(dispatch_queue) {
+        dispatch_async(operation_queue) {
             if !overwrite && self.fileManager.fileExistsAtPath(self.absoluteURL(toPath).path ?? "") {
                 completionHandler?(error: self.throwError(toPath, code: NSURLError.CannotMoveFile))
                 return
             }
             do {
-                try self.fileManager.moveItemAtURL(self.absoluteURL(path), toURL: self.absoluteURL(toPath))
+                try self.opFileManager.moveItemAtURL(self.absoluteURL(path), toURL: self.absoluteURL(toPath))
                 completionHandler?(error: nil)
                 dispatch_async(dispatch_get_main_queue(), {
                     self.delegate?.fileproviderSucceed(self, operation: .Move(source: path, destination: toPath))
@@ -148,13 +172,13 @@ public class LocalFileProvider: FileProvider, FileProviderMonitor {
     
     public func copyItemAtPath(path: String, toPath: String, overwrite: Bool = false, completionHandler: SimpleCompletionHandler) {
         // FIXME: progress, for files > 100mb, monitor file by another thread, for dirs check copied items count
-        dispatch_async(dispatch_queue) {
+        dispatch_async(operation_queue) {
             if !overwrite && self.fileManager.fileExistsAtPath(self.absoluteURL(toPath).path ?? "") {
                 completionHandler?(error: self.throwError(toPath, code: NSURLError.CannotWriteToFile))
                 return
             }
             do {
-                try self.fileManager.copyItemAtURL(self.absoluteURL(path), toURL: self.absoluteURL(toPath))
+                try self.opFileManager.copyItemAtURL(self.absoluteURL(path), toURL: self.absoluteURL(toPath))
                 completionHandler?(error: nil)
                 dispatch_async(dispatch_get_main_queue(), {
                     self.delegate?.fileproviderSucceed(self, operation: .Copy(source: path, destination: toPath))
@@ -169,9 +193,9 @@ public class LocalFileProvider: FileProvider, FileProviderMonitor {
     }
     
     public func removeItemAtPath(path: String, completionHandler: SimpleCompletionHandler) {
-        dispatch_async(dispatch_queue) {
+        dispatch_async(operation_queue) {
             do {
-                try self.fileManager.removeItemAtURL(self.absoluteURL(path))
+                try self.opFileManager.removeItemAtURL(self.absoluteURL(path))
                 completionHandler?(error: nil)
                 dispatch_async(dispatch_get_main_queue(), {
                     self.delegate?.fileproviderSucceed(self, operation: .Remove(path: path))
@@ -186,34 +210,34 @@ public class LocalFileProvider: FileProvider, FileProviderMonitor {
     }
     
     public func copyLocalFileToPath(localFile: NSURL, toPath: String, completionHandler: SimpleCompletionHandler) {
-        dispatch_async(dispatch_queue) {
+        dispatch_async(operation_queue) {
             do {
-                try self.fileManager.copyItemAtURL(localFile, toURL: self.absoluteURL(toPath))
+                try self.opFileManager.copyItemAtURL(localFile, toURL: self.absoluteURL(toPath))
                 completionHandler?(error: nil)
                 dispatch_async(dispatch_get_main_queue(), {
-                    self.delegate?.fileproviderSucceed(self, operation: .Copy(source: localFile.absoluteString, destination: toPath))
+                    self.delegate?.fileproviderSucceed(self, operation: .Copy(source: localFile.uw_absoluteString, destination: toPath))
                 })
             } catch let e as NSError {
                 completionHandler?(error: e)
                 dispatch_async(dispatch_get_main_queue(), {
-                    self.delegate?.fileproviderFailed(self, operation: .Copy(source: localFile.absoluteString, destination: toPath))
+                    self.delegate?.fileproviderFailed(self, operation: .Copy(source: localFile.uw_absoluteString, destination: toPath))
                 })
             }
         }
     }
     
     public func copyPathToLocalFile(path: String, toLocalURL: NSURL, completionHandler: SimpleCompletionHandler) {
-        dispatch_async(dispatch_queue) {
+        dispatch_async(operation_queue) {
             do {
-                try self.fileManager.copyItemAtURL(self.absoluteURL(path), toURL: toLocalURL)
+                try self.opFileManager.copyItemAtURL(self.absoluteURL(path), toURL: toLocalURL)
                 completionHandler?(error: nil)
                 dispatch_async(dispatch_get_main_queue(), {
-                    self.delegate?.fileproviderSucceed(self, operation: .Copy(source: path, destination: toLocalURL.absoluteString))
+                    self.delegate?.fileproviderSucceed(self, operation: .Copy(source: path, destination: toLocalURL.uw_absoluteString))
                 })
             } catch let e as NSError {
                 completionHandler?(error: e)
                 dispatch_async(dispatch_get_main_queue(), {
-                    self.delegate?.fileproviderFailed(self, operation: .Copy(source: path, destination: toLocalURL.absoluteString))
+                    self.delegate?.fileproviderFailed(self, operation: .Copy(source: path, destination: toLocalURL.uw_absoluteString))
                 })
             }
         }
@@ -231,7 +255,7 @@ public class LocalFileProvider: FileProvider, FileProviderMonitor {
         // So we have to fallback to POSIX provided methods
         dispatch_async(dispatch_queue) {
             let aPath = self.absoluteURL(path).path!
-            if self.attributesOfItemAtURL(self.absoluteURL(path)).fileType == .Directory {
+            if self.attributesOfItemAtURL(self.absoluteURL(path)).isDirectory {
                 self.throwError(path, code: NSURLError.FileIsDirectory)
             }
             if !self.fileManager.fileExistsAtPath(aPath) {
@@ -256,7 +280,7 @@ public class LocalFileProvider: FileProvider, FileProviderMonitor {
     }
     
     public func writeContentsAtPath(path: String, contents data: NSData, atomically: Bool, completionHandler: SimpleCompletionHandler) {
-        dispatch_async(dispatch_queue) {
+        dispatch_async(operation_queue) {
             data.writeToURL(self.absoluteURL(path), atomically: atomically)
             dispatch_async(dispatch_get_main_queue(), {
                 self.delegate?.fileproviderSucceed(self, operation: .Modify(path: path))
@@ -282,38 +306,47 @@ public class LocalFileProvider: FileProvider, FileProviderMonitor {
         }
     }
     
-    private var monitorDictionary = [String : LocalFolderMonitor]()
+    private var monitors = [LocalFolderMonitor]()
     
     public func registerNotifcation(path: String, eventHandler: (() -> Void)) {
         self.unregisterNotifcation(path)
+        let absurl = self.absoluteURL(path)
         var isdirv: AnyObject?
         do {
-            try absoluteURL(path).getResourceValue(&isdirv, forKey: NSURLIsDirectoryKey)
+            try absurl.getResourceValue(&isdirv, forKey: NSURLIsDirectoryKey)
         } catch _ {
         }
         if !(isdirv?.boolValue ?? false) {
             return
         }
-        let monitor = LocalFolderMonitor(url: absoluteURL(path)) {
+        let monitor = LocalFolderMonitor(url: absurl) {
             eventHandler()
         }
         monitor.start()
-        monitorDictionary[path] = monitor
+        monitors.append(monitor)
     }
     
     public func unregisterNotifcation(path: String) {
-        if let prevMonitor = monitorDictionary[path] {
-            prevMonitor.stop()
-            monitorDictionary.removeValueForKey(path)
+        var removedMonitor: LocalFolderMonitor?
+        for (i, monitor) in monitors.enumerate() {
+            if self.relativePathOf(url: monitor.url) == path {
+                removedMonitor = monitors.removeAtIndex(i)
+                break
+            }
         }
+        removedMonitor?.stop()
+    }
+    
+    public func isRegisteredForNotification(path: String) -> Bool {
+        return monitors.map( { self.relativePathOf(url: $0.url) } ).contains(path)
     }
 }
 
-extension LocalFileProvider {
+public extension LocalFileProvider {
     public func createSymbolicLinkAtPath(path: String, withDestinationPath destPath: String, completionHandler: SimpleCompletionHandler) {
-        dispatch_async(dispatch_queue) {
+        dispatch_async(operation_queue) {
             do {
-                try self.fileManager.createSymbolicLinkAtURL(self.absoluteURL(path), withDestinationURL: self.absoluteURL(destPath))
+                try self.opFileManager.createSymbolicLinkAtURL(self.absoluteURL(path), withDestinationURL: self.absoluteURL(destPath))
                 completionHandler?(error: nil)
                 dispatch_async(dispatch_get_main_queue(), {
                     self.delegate?.fileproviderSucceed(self, operation: .Link(link: path, target: destPath))
@@ -328,15 +361,95 @@ extension LocalFileProvider {
     }
 }
 
-private class LocalFolderMonitor {
+internal class LocalFileProviderManagerDelegate: NSObject, NSFileManagerDelegate {
+    weak var provider: LocalFileProvider?
+    
+    init(provider: LocalFileProvider) {
+        self.provider = provider
+    }
+    
+    func fileManager(fileManager: NSFileManager, shouldCopyItemAtURL srcURL: NSURL, toURL dstURL: NSURL) -> Bool {
+        guard let provider = self.provider, delegate = provider.fileOperationDelegate else {
+            return true
+        }
+        let srcPath = provider.relativePathOf(url: srcURL)
+        let dstPath = provider.relativePathOf(url: dstURL)
+        return delegate.fileProvider(provider, shouldDoOperation: .Copy(source: srcPath, destination: dstPath))
+    }
+    
+    func fileManager(fileManager: NSFileManager, shouldMoveItemAtURL srcURL: NSURL, toURL dstURL: NSURL) -> Bool {
+        guard let provider = self.provider, delegate = provider.fileOperationDelegate else {
+            return true
+        }
+        let srcPath = provider.relativePathOf(url: srcURL)
+        let dstPath = provider.relativePathOf(url: dstURL)
+        return delegate.fileProvider(provider, shouldDoOperation: .Move(source: srcPath, destination: dstPath))
+    }
+    
+    func fileManager(fileManager: NSFileManager, shouldRemoveItemAtURL URL: NSURL) -> Bool {
+        guard let provider = self.provider, delegate = provider.fileOperationDelegate else {
+            return true
+        }
+        let path = provider.relativePathOf(url: URL)
+        return delegate.fileProvider(provider, shouldDoOperation: .Remove(path: path))
+    }
+    
+    func fileManager(fileManager: NSFileManager, shouldLinkItemAtURL srcURL: NSURL, toURL dstURL: NSURL) -> Bool {
+        guard let provider = self.provider, delegate = provider.fileOperationDelegate else {
+            return true
+        }
+        let srcPath = provider.relativePathOf(url: srcURL)
+        let dstPath = provider.relativePathOf(url: dstURL)
+        return delegate.fileProvider(provider, shouldDoOperation: .Link(link: srcPath, target: dstPath))
+    }
+    
+    func fileManager(fileManager: NSFileManager, shouldProceedAfterError error: NSError, copyingItemAtURL srcURL: NSURL, toURL dstURL: NSURL) -> Bool {
+        guard let provider = self.provider, delegate = provider.fileOperationDelegate else {
+            return false
+        }
+        let srcPath = provider.relativePathOf(url: srcURL)
+        let dstPath = provider.relativePathOf(url: dstURL)
+        return delegate.fileProvider(provider, shouldProceedAfterError: error, operation: .Copy(source: srcPath, destination: dstPath))
+    }
+    
+    func fileManager(fileManager: NSFileManager, shouldProceedAfterError error: NSError, movingItemAtURL srcURL: NSURL, toURL dstURL: NSURL) -> Bool {
+        guard let provider = self.provider, delegate = provider.fileOperationDelegate else {
+            return false
+        }
+        let srcPath = provider.relativePathOf(url: srcURL)
+        let dstPath = provider.relativePathOf(url: dstURL)
+        return delegate.fileProvider(provider, shouldProceedAfterError: error, operation: .Move(source: srcPath, destination: dstPath))
+    }
+    
+    func fileManager(fileManager: NSFileManager, shouldProceedAfterError error: NSError, removingItemAtURL URL: NSURL) -> Bool {
+        guard let provider = self.provider, delegate = provider.fileOperationDelegate else {
+            return false
+        }
+        let path = provider.relativePathOf(url: URL)
+        return delegate.fileProvider(provider, shouldProceedAfterError: error, operation: .Remove(path: path))
+    }
+    
+    func fileManager(fileManager: NSFileManager, shouldProceedAfterError error: NSError, linkingItemAtURL srcURL: NSURL, toURL dstURL: NSURL) -> Bool {
+        guard let provider = self.provider, delegate = provider.fileOperationDelegate else {
+            return false
+        }
+        let srcPath = provider.relativePathOf(url: srcURL)
+        let dstPath = provider.relativePathOf(url: dstURL)
+        return delegate.fileProvider(provider, shouldProceedAfterError: error, operation: .Link(link: srcPath, target: dstPath))
+    }
+}
+
+internal class LocalFolderMonitor {
     private let source: dispatch_source_t
     private let descriptor: CInt
-    private let qq: dispatch_queue_t = dispatch_get_main_queue()
+    private let qq: dispatch_queue_t = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
     private var state: Bool = false
+    private var monitoredTime: NSTimeInterval = NSDate().timeIntervalSinceReferenceDate
+    var url: NSURL
     
     /// Creates a folder monitor object with monitoring enabled.
     init(url: NSURL, handler: ()->Void) {
-        
+        self.url = url
         descriptor = open(url.fileSystemRepresentation, O_EVTONLY)
         
         source = dispatch_source_create(
@@ -345,8 +458,23 @@ private class LocalFolderMonitor {
             DISPATCH_VNODE_WRITE,
             qq
         )
-        
-        dispatch_source_set_event_handler(source, handler)
+        // Folder monitoring is recursive and deep. Monitoring a root folder may be very costly
+        // We have a 0.2 second delay to ensure we wont call handler 1000s times when there is
+        // a huge file operation. This ensures app will work smoothly while this 250 milisec won't
+        // affect user experince much
+        let main_handler: ()->Void = {
+            if NSDate().timeIntervalSinceReferenceDate < self.monitoredTime + 0.2 {
+                return
+            }
+            self.monitoredTime = NSDate().timeIntervalSinceReferenceDate
+            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(NSEC_PER_SEC) / 4), dispatch_get_main_queue(), {
+                handler()
+            })
+        }
+        dispatch_source_set_event_handler(source, main_handler)
+        dispatch_source_set_cancel_handler(source) {
+            close(self.descriptor)
+        }
         start()
     }
     
@@ -367,7 +495,6 @@ private class LocalFolderMonitor {
     }
     
     deinit {
-        close(descriptor)
         dispatch_source_cancel(source)
     }
 }

Sources/SMBClient.swift

@@ -0,0 +1,251 @@
+//
+//  SMBTransmitter.swift
+//  FileProvider
+//
+//  Created by Amir Abbas Mousavian.
+//  Copyright © 2016 Mousavian. Distributed under MIT license.
+//
+
+import Foundation
+
+internal func encode<T>(inout value: T) -> NSData {
+    return withUnsafePointer(&value) { p in
+        NSData(bytes: p, length: sizeofValue(value))
+    }
+}
+
+internal func encode<T>(value: T) -> NSData {
+    var value = value
+    return withUnsafePointer(&value) { p in
+        NSData(bytes: p, length: sizeofValue(value))
+    }
+}
+
+internal func decode<T>(data: NSData) -> T {
+    let pointer = UnsafeMutablePointer<T>.alloc(sizeof(T.Type))
+    data.getBytes(pointer, length: sizeof(T.Type))
+    
+    return pointer.move()
+}
+
+// This client implementation is for little-endian platform, namely x86, x64 & arm
+// For big-endian platforms like PowerPC, there must be a huge overhaul
+
+protocol SMBProtocolClientDelegate: class {
+    func receivedSMB2Response(header: SMB2.Header, response: SMBResponse)
+}
+
+class SMB2ProtocolClient: FPSStreamTask {
+    var currentMessageID: UInt64 = 0
+    var sessionId: UInt64 = 0
+    
+    weak var delegate: SMBProtocolClientDelegate?
+    
+    func sendNegotiate(completionHandler: SimpleCompletionHandler) -> UInt64 {
+        let mId = messageId()
+        let smbHeader = SMB2.Header(command: .NEGOTIATE, creditRequestResponse: 126, messageId: mId, treeId: 0, sessionId: 0)
+        let msg = SMB2.NegotiateRequest()
+        let data = createSMB2Message(smbHeader, message: msg)
+        self.writeData(data, timeout: 0, completionHandler: { (e) in
+            completionHandler?(error: e)
+        })
+        return mId
+    }
+    
+    func sendSessionSetup(completionHandler: SimpleCompletionHandler) -> UInt64 {
+        let mId = messageId()
+        let smbHeader = SMB2.Header(command: .SESSION_SETUP, creditRequestResponse: sessionId > 0 ? 124 : 125, messageId: mId, treeId: 0, sessionId: sessionId)
+        let msg = SMB2.SessionSetupRequest(singing: [])
+        let data = createSMB2Message(smbHeader, message: msg)
+        self.writeData(data, timeout: 0, completionHandler: { (e) in
+            if self.sessionId == 0 {
+                self.readDataOfMinLength(64, maxLength: 65536, timeout: 30, completionHandler: { (data, eof, e2) in
+                    // TODO: set session id
+                    completionHandler?(error: e2 ?? e)
+                })
+            }
+        })
+        return mId
+    }
+    
+    func sendTreeConnect(completionHandler: SimpleCompletionHandler) -> UInt64 {
+        let req = self.currentRequest ?? self.originalRequest
+        guard let url = req?.URL, let host = url.host else {
+            return 0
+        }
+        let mId = messageId()
+        let smbHeader = SMB2.Header(command: .TREE_CONNECT, creditRequestResponse: 123, messageId: mId, treeId: 0, sessionId: sessionId)
+        var share = ""
+        if let cmp = url.pathComponents where cmp.count > 0 {
+            share = cmp[0]
+        }
+        let tcHeader = SMB2.TreeConnectRequest.Header(flags: [])
+        let msg = SMB2.TreeConnectRequest(header: tcHeader, host: host, share: share)
+        let data = createSMB2Message(smbHeader, message: msg!)
+        self.writeData(data, timeout: 0, completionHandler: { (e) in
+            completionHandler?(error: e)
+            
+        })
+        return mId
+    }
+    func sendTreeDisconnect(treeId: UInt32, completionHandler: SimpleCompletionHandler) -> UInt64 {
+        let mId = messageId()
+        let smbHeader = SMB2.Header(command: .TREE_DISCONNECT, creditRequestResponse: 111, messageId: mId, treeId: treeId, sessionId: sessionId)
+        let msg = SMB2.TreeDisconnect()
+        let data = createSMB2Message(smbHeader, message: msg)
+        self.writeData(data, timeout: 0, completionHandler: { (e) in
+            completionHandler?(error: e)
+        })
+        return mId
+    }
+    
+    func sendLogoff(treeId: UInt32, completionHandler: SimpleCompletionHandler) -> UInt64 {
+        let mId = messageId()
+        let smbHeader = SMB2.Header(command: .LOGOFF, creditRequestResponse: 0, messageId: mId, treeId: 0, sessionId: sessionId)
+        let msg = SMB2.LogOff()
+        let data = createSMB2Message(smbHeader, message: msg)
+        self.writeData(data, timeout: 0, completionHandler: { (e) in
+            completionHandler?(error: e)
+        })
+        return mId
+    }
+    
+    func messageId() -> UInt64 {
+        defer {
+            currentMessageID += 1
+        }
+        return currentMessageID
+    }
+    
+    // MARK: create and analyse messages
+    
+    func determineSMBVersion(data: NSData) -> Float {
+        var smbverChar: Int8 = 0
+        data.getBytes(&smbverChar, length: 1)
+        let version = 0 - smbverChar
+        return Float(version)
+    }
+    
+    func digestSMBMessage(data: NSData) throws -> (header: SMB1.Header, blocks: [(params: [UInt16], message: NSData?)]) {
+        guard data.length > 30 else {
+            throw NSURLError.BadServerResponse
+        }
+        var buffer = [UInt8](count: data.length, repeatedValue: 0)
+        guard determineSMBVersion(data) == 1 else {
+            throw SMBFileProviderError.IncompatibleHeader
+        }
+        let headersize = sizeof(SMB1.Header.self)
+        let header: SMB1.Header = decode(data)
+        var blocks = [(params: [UInt16], message: NSData?)]()
+        var offset = headersize
+        while offset < data.length {
+            let paramWords: [UInt16]
+            let paramWordsCount = Int(buffer[offset])
+            guard data.length > (paramWordsCount * 2 + offset) else {
+                throw SMBFileProviderError.IncorrectParamsLength
+            }
+            offset += sizeof(UInt8)
+            var rawParamWords = [UInt8](buffer[offset..<(offset + paramWordsCount * 2)])
+            let paramData = NSData(bytesNoCopy: &rawParamWords, length: rawParamWords.count)
+            paramWords = decode(paramData)
+            offset += paramWordsCount * 2
+            let messageBytesCountLittleEndian = [UInt8](buffer[offset...(offset + 1)])
+            let messageBytesCount = Int(UnsafePointer<UInt16>(messageBytesCountLittleEndian).memory)
+            offset += sizeof(UInt16)
+            guard data.length >= (offset + messageBytesCount) else {
+                throw SMBFileProviderError.IncorrectMessageLength
+            }
+            var rawMessage = [UInt8](buffer[offset..<(offset + messageBytesCount)])
+            offset += messageBytesCount
+            let message = NSData(bytes: &rawMessage, length: rawMessage.count)
+            blocks.append((params: paramWords, message: message))
+        }
+        return (header, blocks)
+    }
+    
+    func digestSMB2Message(data: NSData) throws -> (header: SMB2.Header, message: SMBResponse?)? {
+        guard data.length > 65 else {
+            throw NSURLError.BadServerResponse
+        }
+        guard determineSMBVersion(data) == 2 else {
+            throw SMBFileProviderError.IncompatibleHeader
+        }
+        let headersize = sizeof(SMB2.Header.self)
+        let headerData = data.subdataWithRange(NSRange(location: 0, length: headersize))
+        let messageSize = data.length - headersize
+        let messageData = data.subdataWithRange(NSRange(location: headersize, length: messageSize))
+        let header: SMB2.Header = decode(headerData)
+        switch header.command {
+        case .NEGOTIATE:
+            return (header, SMB2.NegotiateResponse(data: messageData))
+        case .SESSION_SETUP:
+            return (header, SMB2.SessionSetupResponse(data: messageData))
+        case .LOGOFF:
+            return (header, SMB2.LogOff(data: messageData))
+        case .TREE_CONNECT:
+            return (header, SMB2.TreeConnectResponse(data: messageData))
+        case .TREE_DISCONNECT:
+            return (header, SMB2.TreeDisconnect(data: messageData))
+        case .CREATE:
+            return (header, SMB2.CreateResponse(data: messageData))
+        case .CLOSE:
+            return (header, SMB2.CloseResponse(data: messageData))
+        case .FLUSH:
+            return (header, SMB2.FlushResponse(data: messageData))
+        case .READ:
+            return (header, SMB2.ReadRespone(data: messageData))
+        case .WRITE:
+            return (header, SMB2.WriteResponse(data: messageData))
+        case .LOCK:
+            return (header, SMB2.LockResponse(data: messageData))
+        case .IOCTL:
+            return (header, SMB2.IOCtlResponse(data: messageData))
+        case .CANCEL:
+            return (header, nil)
+        case .ECHO:
+            return (header, SMB2.Echo(data: messageData))
+        case .QUERY_DIRECTORY:
+            return (header, SMB2.QueryDirectoryResponse(data: messageData))
+        case .CHANGE_NOTIFY:
+            return (header, SMB2.ChangeNotifyResponse(data: messageData))
+        case .QUERY_INFO:
+            return (header, SMB2.QueryInfoResponse(data: messageData))
+        case .SET_INFO:
+            return (header, SMB2.SetInfoResponse(data: messageData))
+        case .OPLOCK_BREAK:
+            return (header, nil) // FIXME:
+        case .INVALID:
+            throw SMBFileProviderError.InvalidCommand
+        }
+    }
+    
+    func createSMBMessage(header: SMB1.Header, blocks: [(params: NSData?, message: NSData?)]) -> NSData {
+        var headerv = header
+        let result = NSMutableData(data: encode(&headerv))
+        for block in blocks {
+            var paramWordsCount = UInt8(block.params?.length ?? 0)
+            result.appendBytes(&paramWordsCount, length: sizeofValue(paramWordsCount))
+            if let params = block.params {
+                result.appendData(params)
+            }
+            var messageLen = UInt16(block.message?.length ?? 0)
+            result.appendBytes(&messageLen, length: sizeofValue(messageLen))
+            if let message = block.message {
+                result.appendData(message)
+            }
+        }
+        return result
+    }
+    
+    func createSMB2Message(header: SMB2.Header, message: SMBRequest) -> NSData {
+        var headerv = header
+        let result = NSMutableData(data: encode(&headerv))
+        result.appendData(message.data())
+        return result
+    }
+}
+
+protocol FileProviderSMBHeader {
+    var protocolID: UInt32 { get }
+    static var protocolConst: UInt32 { get }
+}

Sources/SMBFileProvider.swift

@@ -0,0 +1,125 @@
+//
+//  SambaFileProvider.swift
+//  FileProvider
+//
+//  Created by Amir Abbas Mousavian.
+//  Copyright © 2016 Mousavian. Distributed under MIT license.
+//
+
+import Foundation
+
+public class SMBFileProvider: FileProvider, FileProviderMonitor {
+    public var type: String = "Samba"
+    public var isPathRelative: Bool = true
+    public var baseURL: NSURL?
+    public var currentPath: String = ""
+    public var dispatch_queue: dispatch_queue_t
+    public weak var delegate: FileProviderDelegate?
+    public let credential: NSURLCredential?
+    
+    public typealias FileObjectClass = FileObject
+    
+    public init? (baseURL: NSURL, credential: NSURLCredential, afterInitialized: SimpleCompletionHandler) {
+        guard baseURL.uw_scheme.lowercaseString == "smb" else {
+            return nil
+        }
+        self.baseURL = baseURL
+        dispatch_queue = dispatch_queue_create("FileProvider.\(type)", DISPATCH_QUEUE_CONCURRENT)
+        //let url = baseURL.uw_absoluteString
+        self.credential = credential
+    }
+        
+    public func contentsOfDirectoryAtPath(path: String, completionHandler: ((contents: [FileObjectClass], error: ErrorType?) -> Void)) {
+        NotImplemented()
+        dispatch_async(dispatch_queue) { 
+            
+        }
+    }
+    
+    public func attributesOfItemAtPath(path: String, completionHandler: ((attributes: FileObjectClass?, error: ErrorType?) -> Void)) {
+        NotImplemented()
+    }
+    
+    public func storageProperties(completionHandler: ((total: Int64, used: Int64) -> Void)) {
+        NotImplemented()
+    }
+    
+    public weak var fileOperationDelegate: FileOperationDelegate?
+    
+    public func createFolder(folderName: String, atPath: String, completionHandler: SimpleCompletionHandler) {
+        NotImplemented()
+    }
+    
+    public func createFile(fileAttribs: FileObject, atPath: String, contents data: NSData?, completionHandler: SimpleCompletionHandler) {
+        NotImplemented()
+    }
+    
+    public func moveItemAtPath(path: String, toPath: String, overwrite: Bool = false, completionHandler: SimpleCompletionHandler) {
+        NotImplemented()
+    }
+    
+    public func copyItemAtPath(path: String, toPath: String, overwrite: Bool = false, completionHandler: SimpleCompletionHandler) {
+        NotImplemented()
+    }
+    
+    public func removeItemAtPath(path: String, completionHandler: SimpleCompletionHandler) {
+        NotImplemented()
+    }
+    
+    public func copyLocalFileToPath(localFile: NSURL, toPath: String, completionHandler: SimpleCompletionHandler) {
+        NotImplemented()
+    }
+    
+    public func copyPathToLocalFile(path: String, toLocalURL: NSURL, completionHandler: SimpleCompletionHandler) {
+        NotImplemented()
+    }
+    
+    public func contentsAtPath(path: String, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void)) {
+        NotImplemented()
+    }
+    
+    public func contentsAtPath(path: String, offset: Int64, length: Int, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void)) {
+        NotImplemented()
+    }
+    
+    public func writeContentsAtPath(path: String, contents data: NSData, atomically: Bool, completionHandler: SimpleCompletionHandler) {
+        NotImplemented()
+    }
+    
+    public func searchFilesAtPath(path: String, recursive: Bool, query: String, foundItemHandler: ((FileObjectClass) -> Void)?, completionHandler: ((files: [FileObjectClass], error: ErrorType?) -> Void)) {
+        NotImplemented()
+    }
+    
+    public func registerNotifcation(path: String, eventHandler: (() -> Void)) {
+        NotImplemented()
+    }
+    
+    public func unregisterNotifcation(path: String) {
+        NotImplemented()
+    }
+    
+    public func isRegisteredForNotification(path: String) -> Bool {
+        return false
+    }
+}
+
+// MARK: basic CIFS interactivity
+public enum SMBFileProviderError: Int, ErrorType, CustomStringConvertible {
+    case BadHeader
+    case IncompatibleHeader
+    case IncorrectParamsLength
+    case IncorrectMessageLength
+    case InvalidCommand
+    
+    public var description: String {
+        return "SMB message structure is invalid"
+    }
+}
+
+private extension SMBFileProvider {
+    private func getPID() -> UInt32 {
+        return UInt32(NSProcessInfo.processInfo().processIdentifier)
+    }
+}
+
+

Sources/SMBTypes/CIFSTypes.swift

@@ -0,0 +1,217 @@
+//
+//  CIFSTypes.swift
+//  ExtDownloader
+//
+//  Created by Amir Abbas Mousavian on 4/30/95.
+//  Copyright © 1395 Mousavian. All rights reserved.
+//
+
+import Foundation
+
+// SMB/CIFS Types
+struct SMB1 {
+    struct Header { // 32 bytes
+        // header is always \u{ff}SMB
+        let protocolID: UInt32
+        static let protocolConst: UInt32 = 0x424d53ff
+        private var _command: UInt8
+        var command: Command {
+            get {
+                return Command(rawValue: _command) ?? .INVALID
+            }
+            set {
+                _command = newValue.rawValue
+            }
+        }
+        // error messages from the server to the client
+        private var _status: (UInt8, UInt8, UInt8, UInt8)
+        var error: (Class: UInt8, code: UInt16) {
+            get {
+                return (_status.0, UInt16(_status.2) + (UInt16(_status.3) << 8))
+            }
+            set {
+                _status = (newValue.Class, 0, UInt8(newValue.code & 0xff), UInt8(newValue.code >> 8))
+            }
+        }
+        var ntStatus: UInt32 {
+            get {
+                let statusLo = UInt32(_status.0) + UInt32(_status.1) << 8
+                let statusHi = UInt32(_status.2) + UInt32(_status.3) << 8
+                return statusHi << 16 + statusLo
+            }
+            set {
+                _status = (UInt8(newValue & 0xff), UInt8(newValue >> 8 & 0xff), UInt8(newValue >> 16 & 0xff), UInt8(newValue >> 24 & 0xff))
+            }
+        }
+        var flags: Flags
+        var flags2: Flags2
+        var pidHigh: UInt16
+        //  encryption key used for validating messages over connectionless transports
+        private var _securityKey: (UInt16, UInt16)
+        var securityKey: UInt32 {
+            get {
+                return UInt32(_securityKey.1) << 16 + UInt32(_securityKey.0)
+            }
+            set {
+                _securityKey = (UInt16(newValue & 0xffff), UInt16(newValue >> 16))
+            }
+        }
+        ///  Connection identifier
+        var securityCID: UInt16
+        ///  Identifier of the sequence of a message over connectionless transports
+        var securitySequenceNumber: UInt16
+        private var ununsed: UInt16
+        var treeId: UInt16
+        var pidLow: UInt16
+        var userId: UInt16
+        var multiplexId: UInt16
+        var pid: UInt32 {
+            get {
+                return UInt32(pidLow) + UInt32(pidHigh) << 16
+            }
+            set {
+                pidLow = UInt16(newValue & 0xffff)
+                pidHigh = UInt16(newValue >> 16)
+            }
+        }
+        
+        init(command: Command, ntStatus: UInt32 = 0, flags: Flags, flags2: Flags2 = [.LONG_NAMES, .ERR_STATUS, .UNICODE], securityKey: UInt32 = 0, securityCID: UInt16 = 0, securitySequenceNumber: UInt16 = 0, treeId: UInt16, pid: UInt32, userId: UInt16, multiplexId: UInt16) {
+            self.protocolID = Header.protocolConst
+            self._command = command.rawValue
+            _status = (UInt8(ntStatus & 0xff), UInt8(ntStatus >> 8 & 0xff), UInt8(ntStatus >> 16 & 0xff), UInt8(ntStatus >> 24 & 0xff))
+            self.flags = flags
+            self.flags2 = flags2
+            self._securityKey = (UInt16(securityKey & 0xffff), UInt16(securityKey >> 16))
+            self.securityCID = securityCID
+            self.securitySequenceNumber = securitySequenceNumber
+            self.ununsed = 0
+            self.treeId = treeId
+            self.pidLow = UInt16(pid & 0xffff)
+            self.pidHigh = UInt16(pid >> 16)
+            self.userId = userId
+            self.multiplexId = multiplexId
+        }
+    }
+    
+    struct Flags: OptionSetType {
+        let rawValue: UInt8
+        
+        init(rawValue: UInt8) {
+            self.rawValue = rawValue
+        }
+        /** This bit is set (1) in the NEGOTIATE (0x72) Response if the server supports
+         * LOCK_AND_READ (0x13) and WRITE_AND_UNLOCK (0x14) commands. */
+        static let LOCK_AND_READ_OK       = Flags(rawValue: 0x01)
+        static let BUF_AVAIL              = Flags(rawValue: 0x02)
+        static let CASE_INSENSITIVE       = Flags(rawValue: 0x08)
+        static let CANONICALIZED_PATHS    = Flags(rawValue: 0x10)
+        static let OPLOCK                 = Flags(rawValue: 0x20)
+        static let OPBATCH                = Flags(rawValue: 0x40)
+        /**  When on, this message is being sent from the server in response to a client request. */
+        static let REPLY                  = Flags(rawValue: 0x80)
+    }
+    
+    struct Flags2: OptionSetType {
+        let rawValue: UInt16
+        
+        init(rawValue: UInt16) {
+            self.rawValue = rawValue
+        }
+        /** Client: the message MAY contain long file names. */
+        static let LONG_NAMES             = Flags2(rawValue: 0x0001)
+        /** Client: the client is aware of extended attributes (EAs). */
+        static let EAS                    = Flags2(rawValue: 0x0002)
+        /** Client: the client is requesting signing (if signing is not yet active) or the message
+         * being sent is signed. This bit is used on the SMB header of an SESSION_SETUP_ANDX */
+        static let SMB_SECURITY_SIGNATURE = Flags2(rawValue: 0x0004)
+        ///  Reserved but not implemented.
+        static let IS_LONG_NAME           = Flags2(rawValue: 0x0040)
+        /** client aware of Extended Security negotiation */
+        static let EXT_SEC                = Flags2(rawValue:  0x0800)
+        /** any pathnames in this SMB SHOULD be resolved in the Distributed File System (DFS) */
+        static let DFS                    = Flags2(rawValue: 0x1000)
+        /**
+         * This flag is useful only on a read request. If the bit is set, then the client MAY read
+         * the file if the client does not have read permission but does have execute permission. */
+        static let PAGING_IO              = Flags2(rawValue:  0x2000) // READ_IF_EXECUTE
+        /**
+         * Client: the server MUST return errors as 32-bit NTSTATUS codes in the response
+         * Server: the Status field in the header is formatted as an NTSTATUS cod */
+        static let ERR_STATUS             = Flags2(rawValue: 0x4000)
+        /**
+         * Each field that contains a string in this SMB message MUST be encoded
+         * as an array of 16-bit Unicode characters */
+        static let UNICODE                = Flags2(rawValue: 0x8000)
+    }
+    
+    enum Command: UInt8 {
+        case CREATE_DIRECTORY       = 0x00
+        case DELETE_DIRECTORY       = 0x01
+        case OPEN                   = 0x02
+        case CREATE                 = 0x03
+        case CLOSE                  = 0x04
+        case FLUSH                  = 0x05
+        case DELETE                 = 0x06
+        case RENAME                 = 0x07
+        case QUERY_INFORMATION      = 0x08
+        case SET_INFORMATION        = 0x09
+        case READ                   = 0x0A
+        case WRITE                  = 0x0B
+        case LOCK_BYTE_RANGE        = 0x0C
+        case UNLOCK_BYTE_RANGE      = 0x0D
+        case CREATE_TEMPORARY       = 0x0E
+        case CREATE_NEW             = 0x0F
+        case CHECK_DIRECTORY        = 0x10
+        case PROCESS_EXIT           = 0x11
+        case SEEK                   = 0x12
+        case LOCK_AND_READ          = 0x13
+        case WRITE_AND_UNLOCK       = 0x14
+        case READ_RAW               = 0x1A
+        case READ_MPX               = 0x1B
+        case READ_MPX_SECONDARY     = 0x1C
+        case WRITE_RAW              = 0x1D
+        case WRITE_MPX              = 0x1E
+        case WRITE_COMPLETE         = 0x20
+        case SET_INFORMATION2       = 0x22
+        case QUERY_INFORMATION2     = 0x23
+        case LOCKING_ANDX           = 0x24
+        case TRANSACTION            = 0x25
+        case TRANSACTION_SECONDARY  = 0x26
+        case IOCTL                  = 0x27
+        case IOCTL_SECONDARY        = 0x28
+        case COPY                   = 0x29
+        case MOVE                   = 0x2A
+        case ECHO                   = 0x2B
+        case WRITE_AND_CLOSE        = 0x2C
+        case OPEN_ANDX              = 0x2D
+        case READ_ANDX              = 0x2E
+        case WRITE_ANDX             = 0x2F
+        case CLOSE_AND_TREE_DISC    = 0x31
+        case TRANSACTION2           = 0x32
+        case TRANSACTION2_SECONDARY = 0x33
+        case FIND_CLOSE2            = 0x34
+        case FIND_NOTIFY_CLOSE      = 0x35
+        case TREE_CONNECT           = 0x70
+        case TREE_DISCONNECT        = 0x71
+        case NEGOTIATE              = 0x72
+        case SESSION_SETUP_ANDX     = 0x73
+        case LOGOFF_ANDX            = 0x74
+        case TREE_CONNECT_ANDX      = 0x75
+        case QUERY_INFORMATION_DISK = 0x80
+        case SEARCH                 = 0x81
+        case FIND                   = 0x82
+        case FIND_UNIQUE            = 0x83
+        case NT_TRANSACT            = 0xA0
+        case NT_TRANSACT_SECONDARY  = 0xA1
+        case NT_CREATE_ANDX         = 0xA2
+        case NT_CANCEL              = 0xA4
+        case OPEN_PRINT_FILE        = 0xC0
+        case WRITE_PRINT_FILE       = 0xC1
+        case CLOSE_PRINT_FILE       = 0xC2
+        case GET_PRINT_QUEUE        = 0xC3
+        case READ_BULK              = 0xD8
+        case WRITE_BULK             = 0xD9
+        case WRITE_BULK_DATA        = 0xDA
+        case INVALID                = 0xFE
+    }
+}

Sources/SMBTypes/SMB2DataTypes.swift

@@ -0,0 +1,50 @@
+//
+//  SMB2DataTypes.swift
+//  ExtDownloader
+//
+//  Created by Amir Abbas Mousavian on 4/30/95.
+//  Copyright © 1395 Mousavian. All rights reserved.
+//
+
+import Foundation
+
+protocol SMBRequest {
+    func data() -> NSData
+}
+
+protocol SMBResponse {
+    init? (data: NSData)
+}
+
+
+protocol IOCtlRequestProtocol: SMBRequest {}
+protocol IOCtlResponseProtocol: SMBResponse {}
+
+
+struct SMBTime {
+    var time: Int64
+    
+    init(time: Int64) {
+        self.time = time
+    }
+    
+    init(unixTime: UInt) {
+        self.time = (Int64(unixTime) + 11644473600) * 10000000
+    }
+    
+    init(timeIntervalSince1970: NSTimeInterval) {
+        self.time = Int64((timeIntervalSince1970 + 11644473600) * 10000000)
+    }
+    
+    init(date: NSDate) {
+        self.init(timeIntervalSince1970: date.timeIntervalSince1970)
+    }
+    
+    var unixTime: UInt {
+        return UInt(self.time / 10000000 - 11644473600)
+    }
+    
+    var date: NSDate {
+        return NSDate(timeIntervalSince1970: Double(self.time) / 10000000 - 11644473600)
+    }
+}

Sources/SMBTypes/SMB2FileHandle.swift

@@ -0,0 +1,448 @@
+//
+//  SMB2CreateClose.swift
+//  ExtDownloader
+//
+//  Created by Amir Abbas Mousavian on 4/30/95.
+//  Copyright © 1395 Mousavian. All rights reserved.
+//
+
+import Foundation
+
+extension SMB2 {
+    // MARK: SMB2 Create
+    
+    struct CreateRequest: SMBRequest {
+        let header: CreateRequest.Header
+        let name: String?
+        let contexts: [CreateContext]
+        
+        init (header: CreateRequest.Header, name: String? = nil, contexts: [CreateContext] = []) {
+            self.header = header
+            self.name = name
+            self.contexts = contexts
+        }
+        
+        func data() -> NSData {
+            var header = self.header
+            var offset = 0x78 //UInt16(sizeof(SMB2.Header.self) + sizeof(CreateContext.Header.self) - 1)
+            let body = NSMutableData()
+            if let name = self.name, let nameData = name.dataUsingEncoding(NSUTF16StringEncoding) {
+                header.nameOffset = UInt16(offset)
+                header.nameLength = UInt16(nameData.length)
+                offset += nameData.length
+                body.appendData(nameData)
+            }
+            if contexts.count > 0 {
+                // TODO: Context CreateRequest implementation, 8 bit allign offset
+                header.contextOffset = UInt32(offset)
+                
+                
+                header.contextLength = 0
+                //result.appendData(nameData)
+            }
+            let result = NSMutableData(data: encode(&header))
+            result.appendData(body)
+            return result
+        }
+        
+        struct Header {
+            let size: UInt16
+            private let securityFlags: UInt8
+            private var _requestedOplockLevel: UInt8
+            var requestedOplockLevel: OplockLevel {
+                get {
+                    return OplockLevel(rawValue: _requestedOplockLevel)!
+                }
+                set {
+                    _requestedOplockLevel = newValue.rawValue
+                }
+            }
+            private var _impersonationLevel: UInt32
+            var impersonationLevel: ImpersonationLevel {
+                get {
+                    return ImpersonationLevel(rawValue: _impersonationLevel)!
+                }
+                set {
+                    _impersonationLevel = newValue.rawValue
+                }
+            }
+            private let flags: UInt64
+            private let reserved: UInt64
+            let access: FileAccessMask
+            let fileAttributes: FileAttributes
+            let shareAccess: ShareAccess
+            private var _desposition: UInt32
+            var desposition: CreateDisposition {
+                get {
+                    return CreateDisposition(rawValue: _desposition)!
+                }
+                set {
+                    _desposition = newValue.rawValue
+                }
+            }
+            let options: CreateOptions
+            var nameOffset: UInt16
+            var nameLength: UInt16
+            var contextOffset: UInt32
+            var contextLength: UInt32
+            
+            init(requestedOplockLevel: OplockLevel = .NONE, impersonationLevel: ImpersonationLevel = .Anonymous, access: FileAccessMask = [.GENERIC_ALL], fileAttributes: FileAttributes = [], shareAccess: ShareAccess = [.READ], desposition: CreateDisposition = .OPEN_IF, options: CreateOptions = []) {
+                self.size = 57
+                self.securityFlags = 0
+                self._requestedOplockLevel = requestedOplockLevel.rawValue
+                self._impersonationLevel = impersonationLevel.rawValue
+                self.flags = 0
+                self.reserved = 0
+                self.access = access
+                self.fileAttributes = fileAttributes
+                self.shareAccess = shareAccess
+                self._desposition = desposition.rawValue
+                self.options = options
+                self.nameOffset = 0
+                self.nameLength = 0
+                self.contextOffset = 0
+                self.contextLength = 0
+            }
+        }
+        
+        struct CreateOptions: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            static let DIRECTORY_FILE               = CreateOptions(rawValue: 0x00000001)
+            static let WRITE_THROUGH                = CreateOptions(rawValue: 0x00000002)
+            static let SEQUENTIAL_ONLY              = CreateOptions(rawValue: 0x00000004)
+            static let NO_INTERMEDIATE_BUFFERING    = CreateOptions(rawValue: 0x00000008)
+            static let NON_DIRECTORY_FILE           = CreateOptions(rawValue: 0x00000040)
+            static let NO_EA_KNOWLEDGE              = CreateOptions(rawValue: 0x00000200)
+            static let RANDOM_ACCESS                = CreateOptions(rawValue: 0x00000800)
+            static let DELETE_ON_CLOSE              = CreateOptions(rawValue: 0x00001000)
+            static let OPEN_BY_FILE_ID              = CreateOptions(rawValue: 0x00002000)
+            static let OPEN_FOR_BACKUP_INTENT       = CreateOptions(rawValue: 0x00004000)
+            static let NO_COMPRESSION               = CreateOptions(rawValue: 0x00008000)
+            static let OPEN_REPARSE_POINT           = CreateOptions(rawValue: 0x00200000)
+            static let OPEN_NO_RECALL               = CreateOptions(rawValue: 0x00400000)
+            private static let SYNCHRONOUS_IO_ALERT         = CreateOptions(rawValue: 0x00000010)
+            private static let SYNCHRONOUS_IO_NONALERT      = CreateOptions(rawValue: 0x00000020)
+            private static let COMPLETE_IF_OPLOCKED         = CreateOptions(rawValue: 0x00000100)
+            private static let REMOTE_INSTANCE              = CreateOptions(rawValue: 0x00000400)
+            private static let OPEN_FOR_FREE_SPACE_QUERY    = CreateOptions(rawValue: 0x00800000)
+            private static let OPEN_REQUIRING_OPLOCK        = CreateOptions(rawValue: 0x00010000)
+            private static let DISALLOW_EXCLUSIVE           = CreateOptions(rawValue: 0x00020000)
+            private static let RESERVE_OPFILTER             = CreateOptions(rawValue: 0x00100000)
+        }
+        
+        enum CreateDisposition: UInt32 {
+            /// If the file already exists, supersede it. Otherwise, create the file.
+            case SUPERSEDE      = 0x00000000
+            /// If the file already exists, return success; otherwise, fail the operation.
+            case OPEN           = 0x00000001
+            /// If the file already exists, fail the operation; otherwise, create the file.
+            case CREATE         = 0x00000002
+            /// Open the file if it already exists; otherwise, create the file.
+            case OPEN_IF        = 0x00000003
+            /// Overwrite the file if it already exists; otherwise, fail the operation.
+            case OVERWRITE      = 0x00000004
+            /// Overwrite the file if it already exists; otherwise, create the file.
+            case OVERWRITE_IF   = 0x00000005
+        }
+        
+        enum ImpersonationLevel: UInt32 {
+            case Anonymous = 0x00000000
+            case Identification = 0x00000001
+            case Impersonation = 0x00000002
+            case Delegate = 0x00000003
+        }
+    }
+    
+    struct CreateResponse: SMBResponse {
+        struct Header {
+            let size: UInt16
+            private let _oplockLevel: UInt8
+            var oplockLevel: OplockLevel {
+                return OplockLevel(rawValue: _oplockLevel)!
+            }
+            private let reserved: UInt32
+            let creationTime: SMBTime
+            let lastAccessTime: SMBTime
+            let lastWriteTime: SMBTime
+            let changeTime: SMBTime
+            let allocationSize: UInt64
+            let endOfFile: UInt64
+            let fileAttributes: FileAttributes
+            private let reserved2: UInt32
+            let fileId: FileId
+            let contextsOffset: UInt32
+            let ContextsLength: UInt32
+        }
+        
+        let header: CreateResponse.Header
+        let contexts: [CreateContext]
+        
+        init? (data: NSData) {
+            guard data.length >= sizeof(CreateResponse.Header.self) else {
+                return nil
+            }
+            self.header = decode(data)
+            if self.header.contextsOffset > 0 {
+                var contexts = [CreateContext]()
+                var contextOffset = Int(self.header.contextsOffset) - sizeof(SMB2.Header.self)
+                while contextOffset > 0 {
+                    guard contextOffset < data.length else {
+                        self.contexts = contexts
+                        return
+                    }
+                    let contextDataHeader = data.subdataWithRange(NSRange(location: contextOffset, length: sizeof(CreateContext.Header.self)))
+                    if let lastContextHeader = CreateContext(data: contextDataHeader) {
+                        let lastContextLen = Int(lastContextHeader.header.dataOffset) + Int(lastContextHeader.header.dataLength) - contextOffset
+                        let lastContextData = data.subdataWithRange(NSRange(location: contextOffset, length: lastContextLen))
+                        if let newContext = CreateContext(data: lastContextData) {
+                            contexts.append(newContext)
+                        }
+                        contextOffset = Int(lastContextHeader.header.next) - sizeof(SMB2.Header.self)
+                    }
+                }
+                self.contexts = contexts
+            } else {
+                self.contexts = []
+            }
+        }
+    }
+    
+    struct CreateContext {
+        struct Header {
+            var next: UInt32
+            let nameOffset: UInt16
+            let nameLength: UInt16
+            private let reserved: UInt16
+            let dataOffset: UInt16
+            let dataLength: UInt32
+        }
+        
+        var header: CreateContext.Header
+        let buffer: NSData
+        
+        init(name: ContextNames, data: NSData) {
+            let nameData = NSMutableData(data: (name.rawValue).dataUsingEncoding(NSUTF16StringEncoding)!)
+            self.header = CreateContext.Header(next: 0, nameOffset: 32, nameLength: UInt16(nameData.length), reserved: 0, dataOffset: UInt16(nameData.length), dataLength: UInt32(data.length))
+            self.buffer = data
+        }
+        
+        init(name: NSUUID, data: NSData) {
+            var uuid = uuid_t(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)
+            name.getUUIDBytes(&uuid.0)
+            let nameData = NSMutableData(bytes: &uuid, length: 16)
+            self.header = CreateContext.Header(next: 0, nameOffset: 32, nameLength: UInt16(nameData.length), reserved: 0, dataOffset: UInt16(nameData.length), dataLength: UInt32(data.length))
+            self.buffer = data
+        }
+        
+        init? (data: NSData) {
+            let headersize = sizeof(Header)
+            guard data.length > headersize else {
+                return nil
+            }
+            self.header = decode(data)
+            self.buffer = data.subdataWithRange(NSRange(location: headersize, length: data.length - headersize))
+        }
+        
+        func data() -> NSData {
+            let result = NSMutableData(data: encode(header))
+            result.appendData(buffer)
+            return result
+        }
+        
+        enum ContextNames: String {
+            /// Request Create Context: Extended attributes
+            case EA_BUFFER = "ExtA"
+            /// Request Create Context: Security descriptor
+            case SD_BUFFER = "SecD"
+            /// Request & Response Create Context: Open to be durable
+            case DURABLE_HANDLE = "DHnQ"
+            case DURABLE_HANDLE_RESPONSE_V2 = "DH2Q"
+            /// Request Create Context: Reconnect to a durable open after being disconnected
+            case DURABLE_HANDLE_RECONNECT = "DHnC"
+            /// Request Create Context: Required allocation size of the newly created file
+            case ALLOCATION_SIZE = "AISi"
+            /// Request & Response Create Context: Maximal access information
+            case QUERY_MAXIMAL_ACCESS = "MxAc"
+            case TIMEWARP_TOKEN = "TWrp"
+            /// Response Create Context: DiskID of the open file in a volume.
+            case QUERY_ON_DISK_ID = "QFid"
+            /// Response Create Context: A lease. This value is only supported for the SMB 2.1 and 3.x dialect family.
+            case LEASE = "RqLs"
+        }
+    }
+    
+    enum OplockLevel: UInt8 {
+        case NONE = 0x00
+        case LEVEL_II = 0x01
+        case EXCLUSIVE = 0x08
+        case BATCH = 0x09
+        case LEASE = 0xFF
+    }
+    
+    struct ShareAccess: OptionSetType {
+        let rawValue: UInt32
+        
+        init(rawValue: UInt32) {
+            self.rawValue = rawValue
+        }
+        
+        static let READ     = ShareAccess(rawValue: 0x00000001)
+        static let WRITE    = ShareAccess(rawValue: 0x00000002)
+        static let DELETE   = ShareAccess(rawValue: 0x00000004)
+    }
+    
+    struct FileAccessMask: OptionSetType {
+        let rawValue: UInt32
+        
+        init(rawValue: UInt32) {
+            self.rawValue = rawValue
+        }
+        
+        // File and Printer/Pipe Accesses
+        static let FILE_READ_DATA = FileAccessMask(rawValue: 0x00000001)
+        static let FILE_WRITE_DATA = FileAccessMask(rawValue: 0x00000002)
+        static let FILE_APPEND_DATA = FileAccessMask(rawValue: 0x00000004)
+        static let FILE_EXECUTE = FileAccessMask(rawValue: 0x00000020)
+        // Directory
+        static let FILE_LIST_DIRECTORY = FileAccessMask(rawValue: 0x00000001)
+        static let FILE_ADD_FILE = FileAccessMask(rawValue: 0x00000002)
+        static let FILE_ADD_SUBDIRECTORY = FileAccessMask(rawValue: 0x00000004)
+        static let FILE_TRAVERSE = FileAccessMask(rawValue: 0x00000020)
+        // Generic
+        static let FILE_READ_EA = FileAccessMask(rawValue: 0x00000008)
+        static let FILE_WRITE_EA = FileAccessMask(rawValue: 0x00000010)
+        static let FILE_DELETE_CHILD = FileAccessMask(rawValue: 0x00000040)
+        static let FILE_READ_ATTRIBUTES = FileAccessMask(rawValue: 0x00000080)
+        static let FILE_WRITE_ATTRIBUTES = FileAccessMask(rawValue: 0x00000100)
+        static let DELETE = FileAccessMask(rawValue: 0x00010000)
+        static let READ_CONTROL = FileAccessMask(rawValue: 0x00020000)
+        static let WRITE_DAC = FileAccessMask(rawValue: 0x00040000)
+        static let WRITE_OWNER = FileAccessMask(rawValue: 0x00080000)
+        static let SYNCHRONIZE = FileAccessMask(rawValue: 0x00100000)
+        static let ACCESS_SYSTEM_SECURITY = FileAccessMask(rawValue: 0x01000000)
+        static let MAXIMUM_ALLOWED = FileAccessMask(rawValue: 0x02000000)
+        static let GENERIC_ALL = FileAccessMask(rawValue: 0x10000000)
+        static let GENERIC_EXECUTE = FileAccessMask(rawValue: 0x20000000)
+        static let GENERIC_WRITE = FileAccessMask(rawValue: 0x40000000)
+        static let GENERIC_READ = FileAccessMask(rawValue: 0x80000000)
+    }
+    
+    struct FileAttributes: OptionSetType {
+        let rawValue: UInt32
+        
+        init(rawValue: UInt32) {
+            self.rawValue = rawValue
+        }
+        
+        static let READONLY             = FileAttributes(rawValue: 0x00000001)
+        static let HIDDEN               = FileAttributes(rawValue: 0x00000002)
+        static let SYSTEM               = FileAttributes(rawValue: 0x00000004)
+        static let DIRECTORY            = FileAttributes(rawValue: 0x00000010)
+        static let ARCHIVE              = FileAttributes(rawValue: 0x00000020)
+        static let NORMAL               = FileAttributes(rawValue: 0x00000080)
+        static let TEMPORARY            = FileAttributes(rawValue: 0x00000100)
+        static let SPARSE_FILE          = FileAttributes(rawValue: 0x00000200)
+        static let REPARSE_POINT        = FileAttributes(rawValue: 0x00000400)
+        static let COMPRESSED           = FileAttributes(rawValue: 0x00000800)
+        static let OFFLINE              = FileAttributes(rawValue: 0x00001000)
+        static let NOT_CONTENT_INDEXED  = FileAttributes(rawValue: 0x00002000)
+        static let ENCRYPTED            = FileAttributes(rawValue: 0x00004000)
+        static let INTEGRITY_STREAM     = FileAttributes(rawValue: 0x00008000)
+        static let NO_SCRUB_DATA        = FileAttributes(rawValue: 0x00020000)
+    }
+    
+    struct FileId {
+        let persistent: UInt64
+        let volatile: UInt64
+    }
+    
+    // MARK: SMB2 Close
+    
+    struct CloseRequest: SMBRequest {
+        let size: UInt16
+        let flags: CloseFlags
+        private let reserved2: UInt32
+        let filePersistantId: UInt64
+        let fileVolatileId: UInt64
+        
+        init(filePersistantId: UInt64, fileVolatileId: UInt64) {
+            self.size = 24
+            self.filePersistantId = filePersistantId
+            self.fileVolatileId = fileVolatileId
+            self.flags = []
+            self.reserved2 = 0
+        }
+        
+        func data() -> NSData {
+            return encode(self)
+        }
+    }
+    
+    struct CloseResponse: SMBResponse {
+        let size: UInt16
+        let flags: CloseFlags
+        private let reserved: UInt32
+        let creationTime: SMBTime
+        let lastAccessTime: SMBTime
+        let lastWriteTime: SMBTime
+        let changeTime: SMBTime
+        let allocationSize: UInt64
+        let endOfFile: UInt64
+        let fileAttributes: FileAttributes
+        
+        init? (data: NSData) {
+            self = decode(data)
+        }
+    }
+    
+    struct CloseFlags: OptionSetType {
+        let rawValue: UInt16
+        
+        init(rawValue: UInt16) {
+            self.rawValue = rawValue
+        }
+        
+        static let POSTQUERY_ATTRIB = Flags(rawValue: 0x0001)
+    }
+    
+    // MARK: SMB2 Flush
+    
+    struct FlushRequest: SMBRequest {
+        let size: UInt16
+        private let reserved: UInt16
+        private let reserved2: UInt32
+        let filePersistantId: UInt64
+        let fileVolatileId: UInt64
+        
+        init(filePersistantId: UInt64, fileVolatileId: UInt64) {
+            self.size = 24
+            self.filePersistantId = filePersistantId
+            self.fileVolatileId = fileVolatileId
+            self.reserved = 0
+            self.reserved2 = 0
+        }
+        
+        func data() -> NSData {
+            return encode(self)
+        }
+    }
+    
+    struct FlushResponse: SMBResponse {
+        let size: UInt16
+        let reserved: UInt16
+        
+        init() {
+            self.size = 4
+            self.reserved = 0
+        }
+        
+        init? (data: NSData) {
+            self = decode(data)
+        }
+    }
+}

Sources/SMBTypes/SMB2FileOperation.swift

@@ -0,0 +1,250 @@
+//
+//  SMB2FileOperation.swift
+//  ExtDownloader
+//
+//  Created by Amir Abbas Mousavian on 4/30/95.
+//  Copyright © 1395 Mousavian. All rights reserved.
+//
+
+import Foundation
+
+extension SMB2 {
+    // MARK: SMB2 Read
+    
+    struct ReadRequest: SMBRequest {
+        let size: UInt16
+        private let padding: UInt8
+        let flags: ReadRequest.Flags
+        let length: UInt32
+        let offset: UInt64
+        let fileId: FileId
+        let minimumLength: UInt32
+        private let _channel: UInt32
+        var channel: Channel {
+            return Channel(rawValue: _channel) ?? .NONE
+        }
+        let remainingBytes: UInt32
+        private let channelInfoOffset: UInt16
+        private let channelInfoLength: UInt16
+        private let channelBuffer: UInt8
+        
+        init (fileId: FileId, offset: UInt64, length: UInt32, flags: ReadRequest.Flags = [], minimumLength: UInt32 = 0, remainingBytes: UInt32 = 0, channel: Channel = .NONE) {
+            self.size = 49
+            self.padding = 0
+            self.flags = flags
+            self.length = length
+            self.offset = offset
+            self.fileId = fileId
+            self.minimumLength = minimumLength
+            self._channel = channel.rawValue
+            self.remainingBytes = remainingBytes
+            self.channelInfoOffset = 0
+            self.channelInfoLength = 0
+            self.channelBuffer = 0
+        }
+        
+        func data() -> NSData {
+            return encode(read)
+        }
+        
+        struct Flags: OptionSetType {
+            let rawValue: UInt8
+            
+            init(rawValue: UInt8) {
+                self.rawValue = rawValue
+            }
+            
+            static let UNBUFFERED = Flags(rawValue: 0x01)
+        }
+    }
+    
+    struct ReadRespone: SMBResponse {
+        struct Header {
+            let size: UInt16
+            let offset: UInt8
+            private let reserved: UInt8
+            let length: UInt32
+            let remaining: UInt32
+            private let reserved2: UInt32
+            
+        }
+        let header: ReadRespone.Header
+        let buffer: NSData
+        
+        init?(data: NSData) {
+            guard data.length > 16 else {
+                return nil
+            }
+            self.header = decode(data)
+            let headersize = sizeof(Header)
+            self.buffer = data.subdataWithRange(NSRange(location: headersize, length: data.length - headersize))
+        }
+    }
+    
+    enum Channel: UInt32 {
+        case NONE                   = 0x00000000
+        case RDMA_V1                = 0x00000001
+        case RDMA_V1_INVALIDATE     =  0x00000002
+    }
+    
+    // MARK: SMB2 Write
+    
+    struct WriteRequest: SMBRequest {
+        let header: WriteRequest.Header
+        let channelInfo: ChannelInfo?
+        let fileData: NSData
+        
+        struct Header {
+            let size: UInt16
+            let dataOffset: UInt16
+            let length: UInt32
+            let offset: UInt64
+            let fileId: FileId
+            private let _channel: UInt32
+            var channel: Channel {
+                return Channel(rawValue: _channel) ?? .NONE
+            }
+            let remainingBytes: UInt32
+            let channelInfoOffset: UInt16
+            let channelInfoLength: UInt16
+            let flags: WriteRequest.Flags
+        }
+        
+        init(fileId: FileId, offset: UInt64, remainingBytes: UInt32 = 0, data: NSData, channel: Channel = .NONE, channelInfo: ChannelInfo? = nil, flags: WriteRequest.Flags = []) {
+            var channelInfoOffset: UInt16 = 0
+            var channelInfoLength: UInt16 = 0
+            if channel != .NONE, let channelInfo = channelInfo {
+                channelInfoOffset = UInt16(sizeof(SMB2.Header.self) + sizeof(WriteRequest.Header.self))
+                channelInfoLength = UInt16(sizeof(channelInfo.dynamicType))
+            }
+            let dataOffset = UInt16(sizeof(SMB2.Header.self) + sizeof(WriteRequest.Header.self)) + channelInfoLength
+            self.header = WriteRequest.Header(size: UInt16(49), dataOffset: dataOffset, length: UInt32(data.length), offset: offset, fileId: fileId, _channel: channel.rawValue, remainingBytes: remainingBytes, channelInfoOffset: channelInfoOffset, channelInfoLength: channelInfoLength, flags: flags)
+            self.channelInfo = channelInfo
+            self.fileData = data
+        }
+        
+        func data() -> NSData {
+            let result = NSMutableData(data: encode(self.header))
+            if let channelInfo = channelInfo {
+                result.appendData(channelInfo.data())
+            }
+            result.appendData(fileData)
+            return result
+        }
+        
+        struct Flags: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            static let THROUGH      = Flags(rawValue: 0x00000001)
+            static let UNBUFFERED   = Flags(rawValue: 0x00000002)
+        }
+    }
+    
+    struct WriteResponse: SMBResponse {
+        let size: UInt16
+        private let reserved: UInt16
+        let writtenBytes: UInt32
+        private let remaining: UInt32
+        private let channelInfoOffset: UInt16
+        private let channelInfoLength: UInt16
+        
+        init?(data: NSData) {
+            self = decode(data)
+        }
+    }
+    
+    struct ChannelInfo: SMBRequest {
+        let offset: UInt64
+        let token: UInt32
+        let length: UInt32
+        
+        func data() -> NSData {
+            return encode(data)
+        }
+    }
+    
+    // MARK: SMB2 Lock
+    
+    struct LockElement: SMBRequest {
+        let offset: UInt64
+        let length: UInt64
+        let flags: LockElement.Flags
+        private let reserved: UInt32
+        
+        func data() -> NSData {
+            return encode(self)
+        }
+        
+        struct Flags: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            static let SHARED_LOCK      = Flags(rawValue: 0x00000001)
+            static let EXCLUSIVE_LOCK   = Flags(rawValue: 0x00000002)
+            static let UNLOCK           = Flags(rawValue: 0x00000004)
+            static let FAIL_IMMEDIATELY = Flags(rawValue: 0x00000010)
+        }
+    }
+    
+    struct LockRequest: SMBRequest {
+        let header: LockRequest.Header
+        let locks: [LockElement]
+        
+        init(fileId: FileId,locks: [LockElement], lockSequenceNumber : Int8 = 0, lockSequenceIndex: UInt32 = 0) {
+            self.header = LockRequest.Header(size: 48, lockCount: UInt16(locks.count), lockSequence: UInt32(lockSequenceNumber << 28) + lockSequenceIndex, fileId: fileId)
+            self.locks = locks
+        }
+        
+        func data() -> NSData {
+            let result = NSMutableData(data: encode(header))
+            for lock in locks {
+                result.appendData(encode(lock))
+            }
+            return result
+        }
+        
+        struct Header {
+            let size: UInt16
+            private let lockCount: UInt16
+            let lockSequence: UInt32
+            let fileId : FileId
+        }
+    }
+    
+    struct LockResponse: SMBResponse {
+        let size: UInt16
+        let reserved: UInt16
+        
+        init() {
+            self.size = 4
+            self.reserved = 0
+        }
+        
+        init? (data: NSData) {
+            self = decode(data)
+        }
+    }
+    
+    // MARK: SMB2 Cancel
+    
+    struct CancelRequest: SMBRequest {
+        let size: UInt16
+        let reserved: UInt16
+        
+        init() {
+            self.size = 4
+            self.reserved = 0
+        }
+        
+        func data() -> NSData {
+            return encode(self)
+        }
+    }
+}

Sources/SMBTypes/SMB2IOCtl.swift

@@ -0,0 +1,389 @@
+//
+//  SMB2IOCtl.swift
+//  ExtDownloader
+//
+//  Created by Amir Abbas Mousavian on 4/30/95.
+//  Copyright © 1395 Mousavian. All rights reserved.
+//
+
+import Foundation
+
+extension SMB2 {
+    // MARK: SMB2 IOCTL
+    
+    /**
+     * IOCtl usage is usually limited in SMB to pipe requests and duplicating file inside server
+     */
+    
+    struct IOCtlRequest: SMBRequest {
+        let header: Header
+        let requestData:  IOCtlRequestProtocol?
+        
+        init(fileId: FileId ,ctlCode: IOCtlCode, requestData: IOCtlRequestProtocol?, flags: IOCtlRequest.Flags = []) {
+            let offset = requestData != nil ? UInt32(sizeof(SMB2.Header.self) + sizeof(IOCtlRequest.Header.self)) : 0
+            self.header = Header(size: 57, reserved: 0, _ctlCode: ctlCode.rawValue, fileId: fileId, inputOffset: offset, inputCount: UInt32((requestData?.data().length ?? 0)), maxInputResponse: 0, outputOffset: offset, outputCount: 0, maxOutputResponse: UInt32(Int32.max), flags: flags, reserved2: 0)
+            self.requestData = requestData
+        }
+        
+        func data() -> NSData {
+            let result = NSMutableData(data: encode(self.header))
+            if let reqData = requestData?.data() {
+                result.appendData(reqData)
+            }
+            return result
+        }
+        
+        struct Header {
+            let size: UInt16
+            private let reserved: UInt16
+            private let _ctlCode: UInt32
+            var ctlCode: IOCtlCode {
+                return IOCtlCode(rawValue: _ctlCode)!
+            }
+            let fileId: FileId
+            let inputOffset: UInt32
+            let inputCount: UInt32
+            let maxInputResponse: UInt32
+            let outputOffset: UInt32
+            let outputCount: UInt32
+            let maxOutputResponse: UInt32
+            let flags: IOCtlRequest.Flags
+            private let reserved2: UInt32
+        }
+        
+        struct Flags: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            static let IOCTL = Flags(rawValue: 0x00000000)
+            static let FSCTL = Flags(rawValue: 0x00000001)
+        }
+    }
+    
+    struct IOCtlResponse: SMBResponse {
+        let header: Header
+        let responseData:  IOCtlResponseProtocol?
+        
+        init?(data: NSData) {
+            self.header = decode(data)
+            let responseRange = NSRange(location: Int(self.header.outputOffset - 64), length: Int(self.header.outputCount))
+            let response = data.subdataWithRange(responseRange)
+            switch self.header.ctlCode {
+            case .SRV_COPYCHUNK, .SRV_COPYCHUNK_WRITE:
+                self.responseData = IOCtlResponseData.SrvCopyChunk(data: response)
+            case .SRV_ENUMERATE_SNAPSHOTS:
+                self.responseData = IOCtlResponseData.SrvSnapshots(data: response)
+            case .SRV_REQUEST_RESUME_KEY:
+                self.responseData = IOCtlResponseData.ResumeKey(data: response)
+            case .SRV_READ_HASH:
+                self.responseData = IOCtlResponseData.ReadHash(data: response)
+            case .QUERY_NETWORK_INTERFACE_INFO:
+                self.responseData = IOCtlResponseData.NetworkInterfaceInfo(data: response)
+            case .VALIDATE_NEGOTIATE_INFO:
+                self.responseData = IOCtlResponseData.ValidateNegotiateInfo(data: response)
+            default:
+                self.responseData = nil
+            }
+        }
+        
+        struct Header {
+            let size: UInt16
+            private let reserved: UInt16
+            private let _ctlCode: UInt32
+            var ctlCode: IOCtlCode {
+                return IOCtlCode(rawValue: _ctlCode)!
+            }
+            let fileId: FileId
+            let inputOffset: UInt32
+            let inputCount: UInt32
+            let outputOffset: UInt32
+            let outputCount: UInt32
+            private let flags: UInt32
+            private let reserved2: UInt32
+        }
+    }
+    
+    enum IOCtlCode: UInt32 {
+        case DFS_GET_REFERRALS              = 0x00060194
+        case DFS_GET_REFERRALS_EX           = 0x000601B0
+        case SET_REPARSE_POINT              = 0x000900A4
+        case FILE_LEVEL_TRIM                = 0x00098208
+        case PIPE_PEEK                      = 0x0011400C
+        case PIPE_WAIT                      = 0x00110018
+        /// PIPE_TRANSCEIVE is valid only on a named pipe with mode set to FILE_PIPE_MESSAGE_MODE.
+        case PIPE_TRANSCEIVE                = 0x0011C017
+        /// Get ResumeKey used by the client to uniquely identify the source file in an FSCTL_SRV_COPYCHUNK or FSCTL_SRV_COPYCHUNK_WRITE request.
+        case SRV_REQUEST_RESUME_KEY         = 0x00140078
+        /// Get all the revision time-stamps that are associated with the Tree Connect share in which the open resides
+        case SRV_ENUMERATE_SNAPSHOTS        = 0x00144064
+        /// Reads a chunk of file for performing server side copy operations.
+        case SRV_COPYCHUNK                  = 0x001440F2
+        /// Retrieve data from the Content Information File associated with a specified file, not valid for the SMB 2.0.2 dialect.
+        case SRV_READ_HASH                  = 0x001441BB
+        /// Writes the chunk of file for performing server side copy operations.
+        case SRV_COPYCHUNK_WRITE            = 0x001480F2
+        /// Request resiliency for a specified open file, not valid for the SMB 2.0.2 dialect.
+        case LMR_REQUEST_RESILIENCY         = 0x001401D4
+        /// Get server network interface info e.g. link speed and socket address information
+        case QUERY_NETWORK_INTERFACE_INFO   = 0x001401FC
+        /// Request validation of a previous SMB 2 NEGOTIATE, valid for SMB 3.0 and SMB 3.0.2 dialects.
+        case VALIDATE_NEGOTIATE_INFO        = 0x00140204
+    }
+    
+    struct IOCtlRequestData {
+        struct CopyChunk: IOCtlRequestProtocol {
+            let sourceKey: (UInt64, UInt64, UInt64)
+            let chunkCount: UInt32
+            let chunks: [Chunk]
+            
+            func data() -> NSData {
+                let result = NSMutableData(data: encode(sourceKey))
+                result.appendData(encode(chunkCount))
+                var reserved: UInt32 = 0
+                result.appendData(encode(&reserved))
+                return NSData()
+            }
+            
+            struct Chunk {
+                let sourceOffset: UInt64
+                let targetOffset: UInt64
+                let length: UInt32
+                private let reserved: UInt32
+                
+                func data() -> NSData {
+                    return encode(self)
+                }
+            }
+        }
+        
+        struct ReadHash: IOCtlRequestProtocol {
+            let _hashType: UInt32
+            var hashType: IOCtlHashType {
+                return IOCtlHashType(rawValue: _hashType) ?? .PEER_DIST
+            }
+            let _hashVersion: UInt32
+            var hashVersion: IOCtlHashVersion {
+                return IOCtlHashVersion(rawValue: _hashVersion) ?? .VER_1
+            }
+            let _hashRetrievalType: UInt32
+            var hashRetrievalType: IOCtlHashRetrievalType {
+                return IOCtlHashRetrievalType(rawValue: _hashRetrievalType) ?? .FILE_BASED
+            }
+            let length: UInt32
+            let offset: UInt64
+            
+            init(offset: UInt64, length: UInt32, hashType: IOCtlHashType = .PEER_DIST, hashVersion: IOCtlHashVersion = .VER_1, hashRetrievalType: IOCtlHashRetrievalType = .FILE_BASED) {
+                self._hashType = hashType.rawValue
+                self._hashVersion = hashVersion.rawValue
+                self._hashRetrievalType = hashRetrievalType.rawValue
+                self.length = length
+                self.offset = offset
+            }
+            
+            func data() -> NSData {
+                return encode(self)
+            }
+        }
+        
+        struct ResilencyRequest: IOCtlRequestProtocol {
+            let timeout: UInt32
+            private let reserved: UInt32
+            
+            /// The requested time the server holds the file open after a disconnect before releasing it. This time is in milliseconds.
+            init(timeout: UInt32) {
+                self.timeout = timeout
+                self.reserved = 0
+            }
+            
+            func data() -> NSData {
+                return encode(self)
+            }
+        }
+        
+        struct ValidateNegotiateInfo: IOCtlRequestProtocol {
+            let header: ValidateNegotiateInfo.Header
+            let dialects: [UInt16]
+            
+            init(dialects: [UInt16], guid: uuid_t, capabilities: IOCtlCapabilities, securityMode: UInt16) {
+                self.header = Header(capabilities: capabilities, guid: guid, securityMode: securityMode, dialectCount: UInt16(dialects.count))
+                self.dialects = dialects
+            }
+            
+            func data() -> NSData {
+                let result = NSMutableData(data: encode(self.header))
+                dialects.forEach { result.appendData(encode($0)) }
+                return result
+            }
+            
+            struct Header {
+                let capabilities: IOCtlCapabilities
+                /// Client's GUID
+                let guid: uuid_t
+                let securityMode: UInt16
+                let dialectCount: UInt16
+            }
+        }
+    }
+    
+    struct IOCtlResponseData {
+        // SRV_COPYCHUNK, SRV_COPYCHUNK_WRITE
+        struct SrvCopyChunk: IOCtlResponseProtocol {
+            let chunksCount: UInt32
+            let chunksBytesWritten: UInt32
+            let totalBytesWriiten: UInt32
+            
+            init?(data: NSData) {
+                self = decode(data)
+            }
+        }
+        
+        // SRV_ENUMERATE_SNAPSHOTS
+        struct SrvSnapshots: IOCtlResponseProtocol {
+            let count: UInt32
+            let returnedCount: UInt32
+            let snapshots: [SMBTime]
+            
+            init?(data: NSData) {
+                self.count = decode(data)
+                self.returnedCount = decode(data.subdataWithRange(NSRange(location: 4, length: 4)))
+                //let size: UInt32 = decode(data.subdataWithRange(NSRange(location: 8, length: 4)))
+                var snapshots = [SMBTime]()
+                let dateFormatter = NSDateFormatter()
+                dateFormatter.dateFormat = "'@GMT-'yyyy'.'MM'.'dd'-'HH'.'mm'.'ss"
+                for i in 0..<Int(returnedCount) {
+                    let offset = 24 + i * 48
+                    if data.length < offset + 48 {
+                        return nil
+                    }
+                    let datestring = String(data: data.subdataWithRange(NSRange(location: offset, length: 48)), encoding: NSUTF16StringEncoding)
+                    if let datestring = datestring, let date = dateFormatter.dateFromString(datestring) {
+                        snapshots.append(SMBTime(date: date))
+                    }
+                }
+                self.snapshots = snapshots
+            }
+        }
+        
+        struct ResumeKey: IOCtlResponseProtocol {
+            let key: (UInt64, UInt64, UInt64)
+            private let contextLength: UInt32
+            private let context: UInt32
+            
+            init?(data: NSData) {
+                self = decode(data)
+            }
+        }
+        
+        struct ReadHash: IOCtlResponseProtocol {
+            // TODO: Implement IOCTL READ_HASH
+            
+            init?(data: NSData) {
+                self = decode(data)
+            }
+        }
+        
+        struct NetworkInterfaceInfo: IOCtlResponseProtocol {
+            let items: [NetworkInterfaceInfo.Item]
+            
+            init?(data: NSData) {
+                let count = data.length / sizeof(Item)
+                guard count > 0 else {
+                    return nil
+                }
+                var items = [Item]()
+                for i in 0..<count {
+                    let itemdata = data.subdataWithRange(NSRange(location: i * sizeof(Item), length: sizeof(Item)))
+                    items.append(decode(itemdata))
+                }
+                self.items = items
+            }
+            
+            struct Item {
+                /// The offset, in bytes, from the beginning of this structure to the beginning of a subsequent 8-byte aligned network interface.
+                let next: UInt32
+                /// specifies the network interface index.
+                let ifIndex: UInt32
+                let capability: IOCtlCapabilities
+                private let reserved: UInt32
+                /// Speed of the network interface in bits per second
+                let linkSpeed: UInt64
+                private let sockaddrStorage:   (UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+                UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8)
+                var family: sa_family_t {
+                    return sockaddrStorage.1
+                }
+                
+                static let ipv4: sa_family_t = 0x02
+                static let ipv6: sa_family_t = 0x17
+                
+                var sockaddr: sockaddr_in {
+                    var sockaddrStorage = self.sockaddrStorage
+                    let data = NSData(bytes: &sockaddrStorage, length: 16)
+                    return decode(data)
+                }
+                
+                var sockaddr6: sockaddr_in6 {
+                    var sockaddrStorage = self.sockaddrStorage
+                    let data = NSData(bytes: &sockaddrStorage, length: 28)
+                    return decode(data)
+                }
+            }
+        }
+        
+        struct ValidateNegotiateInfo: IOCtlResponseProtocol {
+            let capabilities: IOCtlCapabilities
+            let guid: uuid_t
+            let securityMode: UInt16
+            private let _dialect: UInt16
+            var dialect: (major: Int, minor: Int) {
+                return (major: Int(_dialect & 0xFF), minor: Int(_dialect >> 8))
+            }
+            
+            init?(data: NSData) {
+                self = decode(data)
+            }
+        }
+    }
+    
+    struct IOCtlCapabilities: OptionSetType {
+        let rawValue: UInt32
+        
+        init(rawValue: UInt32) {
+            self.rawValue = rawValue
+        }
+        
+        static let RSS_CAPABLE  = IOCtlCapabilities(rawValue: 0x00000001)
+        static let RDMA_CAPABLE = IOCtlCapabilities(rawValue: 0x00000002)
+    }
+    
+    enum IOCtlHashType: UInt32 {
+        case PEER_DIST = 0x00000001
+    }
+    
+    enum IOCtlHashVersion: UInt32 {
+        case VER_1 = 0x00000001
+        case VER_2 = 0x00000002
+    }
+    
+    enum IOCtlHashRetrievalType: UInt32 {
+        case HASH_BASED = 0x00000001
+        case FILE_BASED = 0x00000002
+    }
+}

Sources/SMBTypes/SMB2Notification.swift

@@ -0,0 +1,140 @@
+//
+//  SMB2Notification.swift
+//  FileProvider
+//
+//  Created by Amir Abbas Mousavian on 5/18/95.
+//
+//
+
+import Foundation
+
+extension SMB2 {
+    // MARK: SMB2 Change Notify
+    
+    struct ChangeNotifyRequest: SMBRequest {
+        let size: UInt16
+        let flags: ChangeNotifyRequest.Flags
+        let outputBufferLength: UInt32
+        let fileId: FileId
+        let completionFilters: CompletionFilter
+        private let reserved: UInt32
+        
+        init(fileId: FileId, completionFilters: CompletionFilter, flags: ChangeNotifyRequest.Flags = [], outputBufferLength: UInt32 = 65535) {
+            self.size = 32
+            self.flags = flags
+            self.outputBufferLength = outputBufferLength
+            self.fileId = fileId
+            self.completionFilters = completionFilters
+            self.reserved = 0
+        }
+        
+        func data() -> NSData {
+            return encode(self)
+        }
+        
+        struct Flags: OptionSetType {
+            let rawValue: UInt16
+            
+            init(rawValue: UInt16) {
+                self.rawValue = rawValue
+            }
+            
+            static let WATCH_TREE = Flags(rawValue: 0x0001)
+        }
+        
+        struct CompletionFilter: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            /// The client is notified if a file-name changes.
+            static let FILE_NAME    = CompletionFilter(rawValue: 0x00000001)
+            /// The client is notified if a directory name changes.
+            static let DIR_NAME     = CompletionFilter(rawValue: 0x00000002)
+            /// The client is notified if a file's attributes change.
+            static let ATTRIBUTES   = CompletionFilter(rawValue: 0x00000004)
+            /// The client is notified if a file's size changes.
+            static let SIZE         = CompletionFilter(rawValue: 0x00000008)
+            /// The client is notified if the last write time of a file changes.
+            static let LAST_WRITE   = CompletionFilter(rawValue: 0x00000010)
+            /// The client is notified if the last access time of a file changes.
+            static let LAST_ACCESS  = CompletionFilter(rawValue: 0x00000020)
+            /// The client is notified if the creation time of a file changes.
+            static let CREATION     = CompletionFilter(rawValue: 0x00000040)
+            /// The client is notified if a file's extended attributes (EAs) change.
+            static let EA           = CompletionFilter(rawValue: 0x00000080)
+            /// The client is notified of a file's access control list (ACL) settings change.
+            static let SECURITY     = CompletionFilter(rawValue: 0x00000100)
+            /// The client is notified if a named stream is added to a file.
+            static let STREAM_NAME  = CompletionFilter(rawValue: 0x00000200)
+            /// The client is notified if the size of a named stream is changed.
+            static let STREAM_SIZE  = CompletionFilter(rawValue: 0x00000400)
+            /// The client is notified if a named stream is modified.
+            static let STREAM_WRITE = Flags(rawValue: 0x00000800)
+            
+            static let all = CompletionFilter(rawValue: 0x00000FFF)
+            static let list: CompletionFilter = [.FILE_NAME, .DIR_NAME]
+        }
+    }
+    
+    struct ChangeNotifyResponse: SMBResponse {
+        let notifications: [(action: FileNotifyAction, fileName: String)]
+        
+        init?(data: NSData) {
+            let maxLoop = 1000
+            var i = 0
+            var result = [(action: FileNotifyAction, fileName: String)]()
+            
+            var offset: UInt32 = 0
+            while i < maxLoop {
+                let actionData = data.subdataWithRange(NSRange(location: Int(offset + 4), length: 4))
+                let actionValue: UInt32 = decode(actionData)
+                guard let action = FileNotifyAction(rawValue: actionValue) else {
+                    continue
+                }
+                let fileLenData = data.subdataWithRange(NSRange(location: Int(offset + 8), length: 4))
+                let fileNameLen: UInt32 = decode(fileLenData)
+                let fileNameData = data.subdataWithRange(NSRange(location: Int(offset + 12), length: Int(12 + fileNameLen)))
+                let fileName = String(data: fileNameData, encoding: NSUTF16StringEncoding) ?? ""
+                result.append((action: action, fileName: fileName))
+                
+                let nextOffsetData = data.subdataWithRange(NSRange(location: Int(offset), length: 4))
+                let nextOffset: UInt32 = decode(nextOffsetData)
+                offset += nextOffset
+                if nextOffset == 0 {
+                    break
+                }
+                i += 1
+            }
+            
+            self.notifications = result
+        }
+    }
+    
+    enum FileNotifyAction: UInt32 {
+        /// The file was added to the directory.
+        case ADDED = 0x00000001
+        /// The file was removed from the directory.
+        case REMOVED = 0x00000002
+        /// The file was modified. This can be a change to the data or attributes of the file.
+        case MODIFIED = 0x00000003
+        /// The file was renamed, and this is the old name. If the new name resides outside of the directory being monitored, the client will not receive the FILE_ACTION_RENAMED_NEW_NAME bit value.
+        case RENAMED_OLD_NAME = 0x00000004
+        /// The file was renamed, and this is the new name. If the old name resides outside of the directory being monitored, the client will not receive the FILE_ACTION_RENAME_OLD_NAME bit value.
+        case RENAMED_NEW_NAME = 0x00000005
+        /// The file was added to a named stream.
+        case ADDED_STREAM = 0x00000006
+        /// The file was removed from the named stream.
+        case REMOVED_STREAM = 0x00000007
+        /// The file was modified. This can be a change to the data or attributes of the file.
+        case MODIFIED_STREAM = 0x00000008
+        /// An object ID was removed because the file the object ID referred to was deleted. This notification is only sent when the directory being monitored is the special directory "\$Extend\$ObjId:$O:$INDEX_ALLOCATION".
+        case REMOVED_BY_DELETE = 0x00000009
+        /// An attempt to tunnel object ID information to a file being created or renamed failed because the object ID is in use by another file on the same volume. This notification is only sent when the directory being monitored is the special directory "\$Extend\$ObjId:$O:$INDEX_ALLOCATION".
+        case NOT_TUNNELLED = 0x0000000A
+        /// An attempt to tunnel object ID information to a file being renamed failed because the file already has an object ID. This notification is only sent when the directory being monitored is the special directory "\$Extend\$ObjId:$O:$INDEX_ALLOCATION".
+        case TUNNELLED_ID_COLLISION = 0x0000000B
+    }
+}

Sources/SMBTypes/SMB2Query.swift

@@ -0,0 +1,339 @@
+//
+//  SMB2Query.swift
+//  ExtDownloader
+//
+//  Created by Amir Abbas Mousavian on 4/31/95.
+//  Copyright © 1395 Mousavian. All rights reserved.
+//
+
+import Foundation
+
+extension SMB2 {
+    // MARK: SMB2 Query Directory
+    
+    struct QueryDirectoryRequest: SMBRequest {
+        let header: QueryDirectoryRequest.Header
+        let searchPattern: String?
+        
+        /// - **bufferLength:** maximum number of bytes the server is allowed to return which is the same as maxTransactSize returned by negotiation.
+        /// - **searchPattern:** can hold wildcards or be nil if all entries should be returned.
+        /// - **fileIndex:** The byte offset within the directory, indicating the position at which to resume the enumeration.
+        init(fileId: FileId, infoClass: FileInformationEnum, flags: Flags, bufferLength: UInt32 = 65535, searchPattern: String? = nil, fileIndex: UInt32 = 0) {
+            assert(FileInformationEnum.queryDirectory.contains(infoClass), "Invalid FileInformationClass used for QueryDirectoryRequest")
+            let searchPatternOffset = searchPattern != nil ? sizeof(SMB2.Header.self) + sizeof(QueryDirectoryRequest.Header.self) : 0
+            let nflags = flags.intersect(fileIndex > 0 ? [.INDEX_SPECIFIED] : [])
+            let searchPatternLength = searchPattern?.dataUsingEncoding(NSUTF16StringEncoding)?.length ?? 0
+            self.header = Header(size: 53, infoClass: infoClass, flags: nflags, fileIndex: fileIndex, fileId: fileId, searchPatternOffset: UInt8(searchPatternOffset), searchPatternLength: UInt8(searchPatternLength), bufferLength: bufferLength)
+            self.searchPattern = searchPattern
+        }
+        
+        func data() -> NSData {
+            let result = NSMutableData(data: encode(header))
+            if let patternData = searchPattern?.dataUsingEncoding(NSUTF16StringEncoding) {
+                result.appendData(patternData)
+            }
+            return result
+        }
+        
+        struct Header {
+            let size: UInt8
+            let infoClass: FileInformationEnum
+            let flags: QueryDirectoryRequest.Flags
+            let fileIndex: UInt32
+            let fileId: FileId
+            let searchPatternOffset: UInt8
+            let searchPatternLength: UInt8
+            let bufferLength: UInt32
+        }
+        
+        struct Flags: OptionSetType {
+            let rawValue: UInt8
+            
+            init(rawValue: UInt8) {
+                self.rawValue = rawValue
+            }
+            
+            static let RESTART_SCANS        = Flags(rawValue: 0x01)
+            static let RETURN_SINGLE_ENTRY  = Flags(rawValue: 0x02)
+            static let INDEX_SPECIFIED      = Flags(rawValue: 0x04)
+            static let REOPEN               = Flags(rawValue: 0x10)
+        }
+    }
+    
+    struct QueryDirectoryResponse: SMBResponse {
+        let buffer: NSData
+        
+        func parseAs(type type: FileInformationEnum) -> [(header: SMB2FilesInformationHeader, fileName: String)] {
+            var offset = 0
+            var result = [(header: SMB2FilesInformationHeader, fileName: String)]()
+            while true {
+                let header: SMB2FilesInformationHeader
+                switch type {
+                case .FileDirectoryInformation:
+                    let headerData = buffer.subdataWithRange(NSRange(location: offset, length: sizeof(FileDirectoryInformationHeader)))
+                    let h: FileDirectoryInformationHeader = decode(headerData)
+                    header = h
+                case .FileFullDirectoryInformation:
+                    let headerData = buffer.subdataWithRange(NSRange(location: offset, length: sizeof(FileFullDirectoryInformationHeader)))
+                    let h: FileFullDirectoryInformationHeader = decode(headerData)
+                    header = h
+                case .FileIdFullDirectoryInformation:
+                    let headerData = buffer.subdataWithRange(NSRange(location: offset, length: sizeof(FileIdFullDirectoryInformationHeader)))
+                    let h: FileIdFullDirectoryInformationHeader = decode(headerData)
+                    header = h
+                case .FileBothDirectoryInformation:
+                    let headerData = buffer.subdataWithRange(NSRange(location: offset, length: sizeof(FileBothDirectoryInformationHeader)))
+                    let h: FileBothDirectoryInformationHeader = decode(headerData)
+                    header = h
+                case .FileIdBothDirectoryInformation:
+                    let headerData = buffer.subdataWithRange(NSRange(location: offset, length: sizeof(FileIdBothDirectoryInformationHeader)))
+                    let h: FileIdBothDirectoryInformationHeader = decode(headerData)
+                    header = h
+                case .FileNamesInformation:
+                    let headerData = buffer.subdataWithRange(NSRange(location: offset, length: sizeof(FileNamesInformationHeader)))
+                    let h: FileNamesInformationHeader = decode(headerData)
+                    header = h
+                default:
+                    return []
+                }
+                let fnData = buffer.subdataWithRange(NSRange(location: offset + sizeofValue(header), length: Int(header.fileNameLength)))
+                let fileName = String(data: fnData, usingEncoding: NSUTF16StringEncoding)
+                result.append((header: header, fileName: fileName))
+                if header.nextEntryOffset == 0 {
+                    break
+                }
+                offset += Int(header.nextEntryOffset)
+            }
+            return result
+        }
+        
+        init? (data: NSData) {
+            let offset: UInt16 = decode(data.subdataWithRange(NSRange(location: 2, length: 2)))
+            let length: UInt32 = decode(data.subdataWithRange(NSRange(location: 4, length: 4)))
+            guard data.length > Int(offset) + Int(length) else {
+                return nil
+            }
+            self.buffer = data.subdataWithRange(NSRange(location: Int(offset), length: Int(length)))
+        }
+    }
+    
+    // MARK: SMB2 Query Info
+    
+    struct QueryInfoRequest: SMBRequest {
+        let header: Header
+        let buffer: NSData?
+        
+        init(fileId: FileId, infoClass: FileInformationEnum, outputBufferLength: UInt32 = 65535) {
+            self.header = Header(size: 41, infoType: 1, infoClass: infoClass.rawValue, outputBufferLength: outputBufferLength, inputBufferOffset: 0, reserved: 0, inputBufferLength: 0, additionalInformation: [], flags: [], fileId: fileId)
+            self.buffer = nil
+        }
+        
+        init(fileId: FileId, extendedAttributes: [String], flags: Flags = [], outputBufferLength: UInt32 = 65535) {
+            let buffer = NSMutableData()
+            for ea in extendedAttributes {
+                let strData = ea.dataUsingEncoding(NSASCIIStringEncoding)!
+                let strLength = UInt8(strData.length)
+                let nextOffset = UInt32(4 + 1 + strData.length)
+                let data = encode(nextOffset).mutableCopy() as! NSMutableData
+                data.appendData(encode(strLength))
+                data.appendData(strData)
+                data.length += 1
+                let padSize = (data.length) % 4
+                data.length += padSize
+                buffer.appendData(data)
+            }
+            
+            let bufferOffset = UInt16(sizeof(SMB2.Header.self) + sizeof(QueryInfoRequest.Header.self))
+            self.header = Header(size: 41, infoType: 1, infoClass: FileInformationEnum.FileFullEaInformation.rawValue, outputBufferLength: outputBufferLength, inputBufferOffset: bufferOffset, reserved: 0, inputBufferLength: UInt32(buffer.length), additionalInformation: [], flags: flags, fileId: fileId)
+            self.buffer = buffer
+        }
+        
+        init(fileId: FileId, infoClass: FileSystemInformationEnum, outputBufferLength: UInt32 = 65535) {
+            self.header = Header(size: 41, infoType: 2, infoClass: infoClass.rawValue, outputBufferLength: outputBufferLength, inputBufferOffset: 0, reserved: 0, inputBufferLength: 0, additionalInformation: [], flags: [], fileId: fileId)
+            self.buffer = nil
+        }
+        
+        init(fileId: FileId, securityInfo: FileSecurityInfo, outputBufferLength: UInt32 = 65535) {
+            self.header = Header(size: 41, infoType: 3, infoClass: 0, outputBufferLength: outputBufferLength, inputBufferOffset: 0, reserved: 0, inputBufferLength: 0, additionalInformation: securityInfo, flags: [], fileId: fileId)
+            self.buffer = nil
+        }
+        
+        // TODO: Implement QUOTA_INFO init
+        
+        func data() -> NSData {
+            let headerData = encode(header)
+            let result = NSMutableData(data: headerData)
+            if let buffer = buffer {
+                result.appendData(buffer)
+            }
+            return result
+        }
+        
+        struct Header {
+            let size: UInt16
+            let infoType: UInt8
+            let infoClass: UInt8
+            let outputBufferLength: UInt32
+            let inputBufferOffset: UInt16
+            private let reserved: UInt16
+            let inputBufferLength: UInt32
+            let additionalInformation: FileSecurityInfo
+            let flags: QueryInfoRequest.Flags
+            let fileId: FileId
+        }
+        
+        struct Flags: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            static let RESTART_SCAN         = Flags(rawValue: 0x00000001)
+            static let RETURN_SINGLE_ENTRY  = Flags(rawValue: 0x00000002)
+            static let INDEX_SPECIFIED      = Flags(rawValue: 0x00000004)
+        }
+    }
+    
+    struct QueryInfoResponse: SMBResponse {
+        let buffer: NSData
+        
+        init?(data: NSData) {
+            let structSizeData = data.subdataWithRange(NSRange(location: 0, length: 2))
+            let structSize: UInt16 = decode(structSizeData)
+            guard structSize == 9 else {
+                return nil
+            }
+            
+            /*let offsetData = data.subdataWithRange(NSRange(location: 2, length: 2))
+            let offset: UInt16 = decode(offsetData)*/
+            
+            let lengthData = data.subdataWithRange(NSRange(location: 4, length: 4))
+            let length: UInt32 = decode(lengthData)
+            
+            guard data.length >= 8 + Int(length) else {
+                return nil
+            }
+            
+            self.buffer = data.subdataWithRange(NSRange(location: 8, length: Int(length)))
+        }
+        
+        var asAccessInformation: FileAccessInformation {
+            return decode(buffer)
+        }
+        
+        var asAlignmentInformation: FileAlignmentInformation {
+            return decode(buffer)
+        }
+        
+        var asAllInformation: (header: FileAllInformationHeader, name: String) {
+            let header: FileAllInformationHeader = decode(buffer)
+            let nameData = buffer.subdataWithRange(NSRange(location: sizeof(FileAllInformationHeader), length: Int(header.nameLength)))
+            let name = String(data: nameData, encoding: NSUTF16StringEncoding) ?? ""
+            return (header, name)
+        }
+        
+        var asAlternateNameInformation: String {
+            let b = UnsafePointer<CChar>(buffer.bytes)
+            return String(CString: b, encoding: NSUTF16StringEncoding) ?? ""
+        }
+        
+        var asAttributeTagInformation: FileAttributeTagInformation {
+            return decode(buffer)
+        }
+        
+        var asBasicInformation: FileBasicInformation {
+            return decode(buffer)
+        }
+        
+        var asCompressionInformation: FileCompressionInformation {
+            return decode(buffer)
+        }
+        
+        var asEaInformation: FileEaInformation {
+            return decode(buffer)
+        }
+        
+        var asFullEaInformation: FileFullEaInformation {
+            // TODO:
+            return FileFullEaInformation()
+        }
+        
+        var asInternalInformation: FileInternalInformation {
+            return decode(buffer)
+        }
+        
+        var asModeInformation: FileModeInformation {
+            return decode(buffer)
+        }
+        
+        var asNetworkOpenInformation: FileNetworkOpenInformation {
+            return decode(buffer)
+        }
+        
+        var asPipeInformation: FilePipeInformation {
+            return decode(buffer)
+        }
+        
+        var asPipeLocalInformation: FilePipeLocalInformation {
+            return decode(buffer)
+        }
+        
+        var asPipeRemoteInformation: FilePipeRemoteInformation {
+            return decode(buffer)
+        }
+        
+        var asPositionInformation: FilePositionInformation {
+            return decode(buffer)
+        }
+        
+        var asStandardInformation: FileStandardInformation {
+            return decode(buffer)
+        }
+        
+        var asStreamInformation: (header: FileStreamInformationHeader, name: String) {
+            let header: FileStreamInformationHeader = decode(buffer)
+            let nameData = buffer.subdataWithRange(NSRange(location: sizeof(FileStreamInformationHeader), length: Int(header.streamNameLength)))
+            let name = String(data: nameData, encoding: NSUTF16StringEncoding) ?? ""
+            return (header, name)
+        }
+        
+        var asFsVolumeInformation: (header: FileFsVolumeInformationHeader, name: String) {
+            let header: FileFsVolumeInformationHeader = decode(buffer)
+            let nameData = buffer.subdataWithRange(NSRange(location: sizeof(FileFsVolumeInformationHeader), length: Int(header.labelLength)))
+            let name = String(data: nameData, encoding: NSUTF16StringEncoding) ?? ""
+            return (header, name)
+        }
+        
+        var asFsSizeInformation: FileFsSizeInformation {
+            return decode(buffer)
+        }
+        
+        var asFsDeviceInformation: FileFsDeviceInformation {
+            return decode(buffer)
+        }
+        
+        var asFsAttributeInformation: (header: FileFsAttributeInformationHeader, name: String) {
+            let header: FileFsAttributeInformationHeader = decode(buffer)
+            let nameData = buffer.subdataWithRange(NSRange(location: sizeof(FileFsAttributeInformationHeader), length: Int(header.nameLength)))
+            let name = String(data: nameData, encoding: NSUTF16StringEncoding) ?? ""
+            return (header, name)
+        }
+        
+        var asFsControlInformation: FileFsControlInformation {
+            return decode(buffer)
+        }
+        
+        var asFsFullSizeInformation: FileFsFullSizeInformation {
+            return decode(buffer)
+        }
+        
+        var asFsObjectIdInformation: FileFsObjectIdInformation {
+            return decode(buffer)
+        }
+        
+        var asFsSectorSizeInformation: FileFsSectorSizeInformation {
+            return decode(buffer)
+        }
+    }
+}

Sources/SMBTypes/SMB2QueryTypes.swift

@@ -0,0 +1,623 @@
+//
+//  SMB2QueryTypes.swift
+//  FileProvider
+//
+//  Created by Amir Abbas Mousavian on 5/19/95.
+//
+//
+
+import Foundation
+
+protocol SMB2FilesInformationHeader: SMBResponse {
+    var nextEntryOffset: UInt32 { get }
+    var fileIndex: UInt32 { get }
+    var fileNameLength : UInt32 { get }
+}
+
+extension SMB2 {
+    enum FileInformationEnum: UInt8 {
+        case Nil = 0x00
+        case FileDirectoryInformation = 0x01
+        case FileFullDirectoryInformation = 0x02
+        case FileBothDirectoryInformation = 0x03
+        case FileBasicInformation = 0x04
+        case FileStandardInformation = 0x05
+        case FileInternalInformation = 0x06
+        case FileEaInformation = 0x07
+        case FileAccessInformation = 0x08
+        case FileNameInformation = 0x09
+        case FileRenameInformation = 0x0A
+        case FileLinkInformation = 0x0B
+        case FileNamesInformation = 0x0C
+        case FileDispositionInformation = 0x0D
+        case FilePositionInformation = 0x0E
+        case FileFullEaInformation = 0x0F
+        case FileModeInformation = 0x10
+        case FileAlignmentInformation = 0x11
+        case FileAllInformation = 0x12
+        case FileAllocationInformation = 0x13
+        case FileEndOfFileInformation = 0x14
+        case FileAlternateNameInformation = 0x15
+        case FileStreamInformation = 0x16
+        case FilePipeInformation = 0x17
+        case FilePipeLocalInformation = 0x18
+        case FilePipeRemoteInformation = 0x19
+        case FileMailslotQueryInformation = 0x1A
+        case FileMailslotSetInformation = 0x1B
+        case FileCompressionInformation = 0x1C
+        case FileObjectIdInformation = 0x1D
+        case FileCompletionInformation = 0x1E
+        case FileMoveClusterInformation = 0x1F
+        case FileQuotaInformation = 0x20
+        case FileReparsePointInformation = 0x21
+        case FileNetworkOpenInformation = 0x22
+        case FileAttributeTagInformation = 0x23
+        case FileTrackingInformation = 0x24
+        case FileIdBothDirectoryInformation = 0x25
+        case FileIdFullDirectoryInformation = 0x26
+        case FileValidDataLengthInformation = 0x27
+        case FileShortNameInformation = 0x28
+        case FileIoCompletionNotificationInformation = 0x29
+        case FileIoStatusBlockRangeInformation = 0x2A
+        case FileIoPriorityHintInformation = 0x2B
+        case FileSfioReserveInformation = 0x2C
+        case FileSfioVolumeInformation = 0x2D
+        case FileHardLinkInformation = 0x2E
+        case FileProcessIdsUsingFileInformation = 0x2F
+        case FileNormalizedNameInformation = 0x30
+        case FileNetworkPhysicalNameInformation = 0x31
+        case FileIdGlobalTxDirectoryInformation = 0x32
+        case FileIsRemoteDeviceInformation = 0x33
+        case FileUnusedInformation = 0x34
+        case FileNumaNodeInformation = 0x35
+        case FileStandardLinkInformation = 0x36
+        case FileRemoteProtocolInformation = 0x37
+        case FileRenameInformationBypassAccessCheck = 0x38
+        case FileLinkInformationBypassAccessCheck = 0x39
+        case FileVolumeNameInformation = 0x3A
+        case FileIdInformation = 0x3B
+        case FileIdExtdDirectoryInformation = 0x3C
+        case FileReplaceCompletionInformation = 0x3D
+        case FileHardLinkFullIdInformation = 0x3E
+        case FileIdExtdBothDirectoryInformation = 0x3F
+        case FileMaximumInformation = 0x40
+        
+        static let  queryDirectory: [FileInformationEnum] = [.FileDirectoryInformation, .FileFullDirectoryInformation, .FileIdFullDirectoryInformation, .FileBothDirectoryInformation, .FileIdBothDirectoryInformation, .FileNamesInformation]
+        
+        static let queryInfoFile: [FileInformationEnum] = [.FileAccessInformation, .FileAlignmentInformation, .FileAllInformation, .FileAlternateNameInformation, .FileAttributeTagInformation, .FileBasicInformation, .FileCompressionInformation, FileEaInformation, .FileFullEaInformation, .FileInternalInformation, .FileModeInformation, .FileNetworkOpenInformation, .FilePipeInformation, .FilePipeLocalInformation, .FilePipeRemoteInformation, .FilePositionInformation, .FileStandardInformation, .FileStreamInformation]
+    }
+    
+    enum FileSystemInformationEnum: UInt8 {
+        case Nil = 0
+        case FileFsAttributeInformation
+        case FileFsControlInformation
+        case FileFsDeviceInformation
+        case FileFsFullSizeInformation
+        case FileFsObjectIdInformation
+        case FileFsSectorSizeInformation
+        case FileFsSizeInformation
+        case FileFsVolumeInformation
+    }
+    
+    struct FileSecurityInfo: OptionSetType {
+        let rawValue: UInt32
+        
+        init(rawValue: UInt32) {
+            self.rawValue = rawValue
+        }
+        
+        static let OWNER        = FileSecurityInfo(rawValue: 0x00000001)
+        static let GROUP        = FileSecurityInfo(rawValue: 0x00000002)
+        static let DACL         = FileSecurityInfo(rawValue: 0x00000004)
+        static let SACL         = FileSecurityInfo(rawValue: 0x00000008)
+        static let LABEL        = FileSecurityInfo(rawValue: 0x00000010)
+        static let ATTRIBUTE    = FileSecurityInfo(rawValue: 0x00000020)
+        static let SCOPE        = FileSecurityInfo(rawValue: 0x00000040)
+        static let BACKUP       = FileSecurityInfo(rawValue: 0x00010000)
+    }
+    
+    struct FileDirectoryInformationHeader: SMB2FilesInformationHeader {
+        let nextEntryOffset: UInt32
+        let fileIndex: UInt32
+        let creationTime: SMBTime
+        let lastAccesTime: SMBTime
+        let lastWriteTime: SMBTime
+        let changeTime: SMBTime
+        let fileSize: UInt64
+        let allocationSize: UInt64
+        let fileAttributes: FileAttributes
+        let fileNameLength : UInt32
+        
+        init?(data: NSData) {
+            self = decode(data)
+        }
+    }
+    
+    struct FileFullDirectoryInformationHeader: SMB2FilesInformationHeader {
+        let nextEntryOffset: UInt32
+        let fileIndex: UInt32
+        let creationTime: SMBTime
+        let lastAccesTime: SMBTime
+        let lastWriteTime: SMBTime
+        let changeTime: SMBTime
+        let fileSize: UInt64
+        let allocationSize: UInt64
+        let fileAttributes: FileAttributes
+        let fileNameLength : UInt32
+        let extendedAttributesSize: UInt32
+        
+        init?(data: NSData) {
+            self = decode(data)
+        }
+    }
+    
+    struct FileIdFullDirectoryInformationHeader: SMB2FilesInformationHeader {
+        let nextEntryOffset: UInt32
+        let fileIndex: UInt32
+        let creationTime: SMBTime
+        let lastAccesTime: SMBTime
+        let lastWriteTime: SMBTime
+        let changeTime: SMBTime
+        let fileSize: UInt64
+        let allocationSize: UInt64
+        let fileAttributes: FileAttributes
+        let fileNameLength : UInt32
+        let extendedAttributesSize: UInt32
+        private let reserved: UInt32
+        let fileId: FileId
+        
+        init?(data: NSData) {
+            self = decode(data)
+        }
+    }
+    
+    struct FileBothDirectoryInformationHeader: SMB2FilesInformationHeader {
+        let nextEntryOffset: UInt32
+        let fileIndex: UInt32
+        let creationTime: SMBTime
+        let lastAccesTime: SMBTime
+        let lastWriteTime: SMBTime
+        let changeTime: SMBTime
+        let fileSize: UInt64
+        let allocationSize: UInt64
+        let fileAttributes: FileAttributes
+        let fileNameLength : UInt32
+        let extendedAttributesSize: UInt32
+        private let shortNameLen: UInt8
+        private let reserved: UInt8
+        private let _shortName: FileShortNameType
+        var shortName: String? {
+            let s = encode(_shortName)
+            let d = NSMutableData(data: s)
+            d.length = Int(shortNameLen)
+            return String(data: d, encoding: NSUTF16StringEncoding)
+        }
+        
+        init?(data: NSData) {
+            self = decode(data)
+        }
+    }
+    
+    struct FileIdBothDirectoryInformationHeader: SMB2FilesInformationHeader {
+        let nextEntryOffset: UInt32
+        let fileIndex: UInt32
+        let creationTime: SMBTime
+        let lastAccesTime: SMBTime
+        let lastWriteTime: SMBTime
+        let changeTime: SMBTime
+        let fileSize: Int64
+        let allocationSize: Int64
+        let fileAttributes: FileAttributes
+        let fileNameLength : UInt32
+        let extendedAttributesSize: UInt32
+        private let shortNameLen: UInt8
+        private let reserved: UInt8
+        private let _shortName: FileShortNameType
+        var shortName: String? {
+            let s = encode(_shortName)
+            let d = NSMutableData(data: s)
+            d.length = Int(shortNameLen)
+            return String(data: d, encoding: NSUTF16StringEncoding)
+        }
+        private let reserved2: UInt16
+        let fileId : FileId
+        
+        init?(data: NSData) {
+            self = decode(data)
+        }
+    }
+    
+    struct FileNamesInformationHeader: SMB2FilesInformationHeader {
+        let nextEntryOffset: UInt32
+        let fileIndex: UInt32
+        let fileNameLength : UInt32
+        
+        init?(data: NSData) {
+            self = decode(data)
+        }
+    }
+    
+    typealias FileShortNameType = (UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+        UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8,
+        UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8)
+    
+    struct FileAccessInformation {
+        let accessMask: FileAccessMask
+    }
+    
+    struct FileAlignmentInformation {
+        private let _alignment: UInt32
+        var alignmentLength: UInt32 {
+            return _alignment + 1
+        }
+    }
+    
+    struct FileAllInformationHeader {
+        let basic: FileBasicInformation
+        let standard: FileStandardInformation
+        let `internal`: FileInternalInformation
+        let ea: FileEaInformation
+        let access: FileAccessInformation
+        let position: FilePositionInformation
+        let mode: FileModeInformation
+        let alignment: FileAlignmentInformation
+        let nameLength: UInt32
+    }
+        
+    struct FileAttributeTagInformation {
+        let fileAttributes: FileAttributes
+        let reparseTag: UInt32
+    }
+    
+    struct FileBasicInformation {
+        let creationTime: SMBTime
+        let lastAccesTime: SMBTime
+        let lastWriteTime: SMBTime
+        let changeTime: SMBTime
+        let fileAttributes: FileAttributes
+        private let reserved: UInt32 = 0
+    }
+    
+    struct FileCompressionInformation {
+        let compressedFileSize: Int64
+        let compressionFormat: UInt16
+        static let COMPRESSION_FORMAT_LZNT1 = 0x0002
+        let compressionUnitShift: UInt8
+        let chunkShift: UInt8
+        let clusterShift: UInt8
+        private let reserved: (UInt8, UInt16)
+    }
+    
+    struct FileEaInformation {
+        let eaSize: UInt32
+    }
+    
+    struct FileFullEaInformation {
+        // TODO
+    }
+    
+    struct FileInternalInformation {
+        let indexNumber: UInt64
+    }
+    
+    struct FileModeInformation {
+        let mode: Mode
+        
+        struct Mode: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            static let FILE_WRITE_THROUGH               = Mode(rawValue: 0x00000002)
+            static let FILE_SEQUENTIAL_ONLY             = Mode(rawValue: 0x00000004)
+            static let FILE_NO_INTERMEDIATE_BUFFERING   = Mode(rawValue: 0x00000008)
+            static let FILE_SYNCHRONOUS_IO_ALERT        = Mode(rawValue: 0x00000010)
+            static let FILE_SYNCHRONOUS_IO_NONALERT     = Mode(rawValue: 0x00000020)
+            static let FILE_DELETE_ON_CLOSE             = Mode(rawValue: 0x00001000)
+        }
+    }
+    
+    struct FileNetworkOpenInformation {
+        let creationTime: SMBTime
+        let lastAccesTime: SMBTime
+        let lastWriteTime: SMBTime
+        let changeTime: SMBTime
+        let fileAttributes: FileAttributes
+        private let reserved: UInt32
+    }
+    
+    struct FilePipeInformation {
+        private let _readMode: UInt32
+        var readMode: ReadMode {
+            return ReadMode(rawValue: _readMode) ?? .BYTE_STREAM_MODE
+        }
+        private let _completionMode: UInt32
+        var completionMode: CompletionMode {
+            return CompletionMode(rawValue: _completionMode) ?? .QUEUE_OPERATION
+        }
+        
+        enum ReadMode: UInt32 {
+            case BYTE_STREAM_MODE   = 0x00000000
+            case MESSAGE_MODE       = 0x00000001
+        }
+        
+        enum CompletionMode: UInt32 {
+            case QUEUE_OPERATION    = 0x00000000
+            case COMPLETE_OPERATION = 0x00000001
+        }
+    }
+    
+    struct FilePipeLocalInformation {
+        private let _namedPipeType: UInt32
+        var namedPipeType: Type {
+            return Type(rawValue: _namedPipeType) ?? .BYTE_STREAM_TYPE
+        }
+        private let _namedPipeConfiguration: UInt32
+        var namedPipeConfiguration: Configuration {
+            return Configuration(rawValue: _namedPipeConfiguration) ?? .INBOUND
+        }
+        let maximumInstances: UInt32
+        let currentInstances: UInt32
+        let inboundQuota: UInt32
+        let readDataAvailable: UInt32
+        let outboundQuota: UInt32
+        let writeQuotaAvailable: UInt32
+        private let _namedPipeState: UInt32
+        var namedPipeState: State {
+            return State(rawValue: _namedPipeState) ?? .DISCONNECTED_STATE
+        }
+        private let _namedPipeEnd: UInt32
+        var namedPipeEnd: End {
+            return End(rawValue: _namedPipeEnd) ?? .CLIENT_END
+        }
+        
+        enum Type: UInt32 {
+            case BYTE_STREAM_TYPE   = 0x00000000
+            case MESSAGE_TYPE       = 0x00000001
+        }
+        
+        enum Configuration: UInt32 {
+            case INBOUND        = 0x00000000
+            case OUTBOUND       = 0x00000001
+            case FULL_DUPLEX    = 0x00000002
+        }
+        
+        enum State: UInt32 {
+            case DISCONNECTED_STATE = 0x00000001
+            case LISTENING_STATE    = 0x00000002
+            case CONNECTED_STATE    = 0x00000003
+            case CLOSING_STATE      = 0x00000004
+        }
+        
+        enum End: UInt32 {
+            case CLIENT_END = 0x00000000
+            case SERVER_END = 0x00000001
+        }
+    }
+    
+    struct FilePipeRemoteInformation {
+        let collectDataTime: SMBTime
+        let maximumCollectionCount: UInt32
+    }
+    
+    struct FilePositionInformation {
+        let currentByteOffset: Int64
+    }
+    
+    struct FileStandardInformation {
+        let allocationSize: Int64
+        let fileSize: Int64
+        let numberOfLinks: UInt32
+        let deletePending: Bool
+        let directory: Bool
+        private let reserved: UInt16
+    }
+    
+    struct FileStreamInformationHeader {
+        let nextEntryOffset: UInt32
+        let streamNameLength: UInt32
+        let streamSize: Int64
+        let streamAllocationSize: Int64
+    }
+    
+    struct FileFsVolumeInformationHeader {
+        let creationTime: SMBTime
+        let serial: UInt32
+        let labelLength: UInt32
+        let supportObjects: Bool
+        let reserved: UInt8
+    }
+    
+    struct FileFsSizeInformation {
+        let totalAllocationUnits: Int64
+        let availableAllocationUnits: Int64
+        let sectorsPerAllocationUnit: UInt32
+        let bytesPerSector: UInt32
+    }
+    
+    struct FileFsDeviceInformation {
+        private let _deviceType: UInt32
+        var deviceType: DeviceType {
+            return DeviceType(rawValue: _deviceType) ?? .DISK
+        }
+        let charactristics: Charactristics
+        
+        enum DeviceType: UInt32 {
+            case CD_ROM = 0x00000002
+            case DISK = 0x00000007
+        }
+        
+        struct Charactristics: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            /// Storage device supports removable media. For example, drivers for JAZ drive devices specify this characteristic, but drivers for PCMCIA flash disks do not.
+            static let REMOVABLE_MEDIA  = Charactristics(rawValue: 0x00000001)
+            /// Indicates that the device cannot be written to.
+            static let READ_ONLY_DEVICE = Charactristics(rawValue: 0x00000002)
+            /// Indicates that the device is a floppy disk device.
+            static let FLOPPY_DISKETTE = Charactristics(rawValue: 0x00000004)
+            /// Indicates that the device supports write-once media.
+            static let WRITE_ONCE_MEDIA = Charactristics(rawValue: 0x00000008)
+            /// ndicates that the volume is for a remote file system like SMB or CIFS.
+            static let REMOTE_DEVICE  = Charactristics(rawValue: 0x00000010)
+            /// Indicates that a file system is mounted on the device.
+            static let DEVICE_IS_MOUNTED = Charactristics(rawValue: 0x00000020)
+            /// Indicates that the volume does not directly reside on storage media, but resides on some other type of media (memory for example).
+            static let VIRTUAL_VOLUME = Charactristics(rawValue: 0x00000040)
+            /// By default, volumes do not check the ACL associated with the volume, but instead use the ACLs associated with individual files on the volume. When this flag is set the volume ACL is also checked.
+            static let DEVICE_SECURE_OPEN = Charactristics(rawValue: 0x00000100)
+            /// Indicates that the device object is part of a Terminal Services device stack.
+            static let TS_DEVICE = Charactristics(rawValue: 0x00001000)
+            /// ndicates that a web-based Distributed Authoring and Versioning (WebDAV) file system is mounted on the device.
+            static let WEBDAV_DEVICE = Charactristics(rawValue: 0x00002000)
+            /// The IO Manager normally performs a full security check for traverse access on every file open when the client is an appcontainer.  Setting of this flag bypasses this enforced traverse access check if the client token already has traverse privileges.
+            static let PORTABLE_DEVICE = Charactristics(rawValue: 0x0004000)
+            /// Indicates that the given device resides on a portable bus like USB or Firewire and that the entire device (not just the media) can be removed from the system.
+            static let DEVICE_ALLOW_APPCONTAINER_TRAVERSAL = Charactristics(rawValue: 0x00020000)
+        }
+    }
+    
+    struct FileFsAttributeInformationHeader {
+        let attributes: Attributes
+        let maximumFileNameLength: Int32
+        let nameLength: UInt32
+        
+        struct Attributes: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            /// The file system supports case-sensitive file names when looking up (searching for) file names in a directory.
+            static let CASE_SENSITIVE_SEARCH = Attributes(rawValue: 0x00000001)
+            /// The file system preserves the case of file names when it places a name on disk.
+            static let CASE_PRESERVED_NAMES = Attributes(rawValue: 0x00000002)
+            /// The file system supports Unicode in file and directory names. This flag applies only to file and directory names; the file system neither restricts nor interprets the bytes of data within a file.
+            static let UNICODE_ON_DISK = Attributes(rawValue: 0x00000004)
+            /// The file system preserves and enforces access control lists (ACLs).
+            static let PERSISTENT_ACLS = Attributes(rawValue: 0x00000008)
+            /// The file volume supports file-based compression. This flag is incompatible with the FILE_VOLUME_IS_COMPRESSED flag.
+            static let FILE_COMPRESSION = Attributes(rawValue: 0x00000010)
+            /// The file system supports per-user quotas.
+            static let VOLUME_QUOTAS = Attributes(rawValue: 0x00000020)
+            /// The file system supports sparse files.
+            static let SUPPORTS_SPARSE_FILES = Attributes(rawValue: 0x00000040)
+            /// The file system supports reparse points.
+            static let SUPPORTS_REPARSE_POINTS = Attributes(rawValue: 0x00000080)
+            /// The file system supports remote storage.
+            static let REMOTE_STORAGE = Attributes(rawValue: 0x00000100)
+            /// The specified volume is a compressed volume. This flag is incompatible with the FILE_FILE_COMPRESSION flag.
+            static let IS_COMPRESSED = Attributes(rawValue: 0x00008000)
+            /// The file system supports object identifiers.
+            static let OBJECT_IDS = Attributes(rawValue: 0x00010000)
+            /// The file system supports the Encrypted File System (EFS).
+            static let ENCRYPTION = Attributes(rawValue: 0x00020000)
+            /// The file system supports named streams. (aka. Resource Fork on MacOS)
+            static let NAMED_STREAMS = Attributes(rawValue: 0x00040000)
+            /// If set, the volume has been mounted in read-only mode.
+            static let READ_ONLY_VOLUME = Attributes(rawValue: 0x00080000)
+            /// The underlying volume is write once. (aka tapes)
+            static let SEQUENTIAL_WRITE_ONCE = Attributes(rawValue: 0x00100000)
+            /// The volume supports transactions.
+            static let SUPPORTS_TRANSACTIONS = Attributes(rawValue: 0x00200000)
+            /// The file system supports hard linking files.
+            static let SUPPORTS_HARD_LINKS = Attributes(rawValue: 0x00400000)
+            /// The file system persistently stores Extended Attribute information per file.
+            static let SUPPORTS_EXTENDED_ATTRIBUTES = Attributes(rawValue: 0x00800000)
+            /// The file system supports opening a file by FileID or ObjectID.
+            static let SUPPORTS_OPEN_BY_FILE_ID = Attributes(rawValue: 0x01000000)
+            /// The file system implements a USN change journal.
+            static let USN_JOURNAL = Attributes(rawValue: 0x02000000)
+            /// The file system supports integrity streams.
+            static let SUPPORT_INTEGRITY_STREAMS = Attributes(rawValue: 0x04000000)
+            /// The file system supports sharing logical clusters between files on the same volume. The file system reallocates on writes to shared clusters. Indicates that FSCTL_DUPLICATE_EXTENTS_TO_FILE is a supported operation.
+            static let SUPPORTS_BLOCK_REFCOUNTING = Attributes(rawValue: 0x08000000)
+            /// The file system tracks whether each cluster of a file contains valid data (either from explicit file writes or automatic zeros) or invalid data (has not yet been written to or zeroed).
+            static let SUPPORTS_SPARSE_VDL = Attributes(rawValue: 0x10000000)
+        }
+    }
+    
+    struct FileFsControlInformation {
+        let freeSpaceStartFiltering: Int64
+        let freeSpaceThreshold: Int64
+        let freeSpaceStopFiltering: Int64
+        let defaultQuotaThreshold: UInt64
+        let defaultQuotaLimit: UInt64
+        let flags: Flags
+        private let padding: UInt32 = 0
+        
+        struct Flags: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            /// Quotas are tracked on the volume, but they are not enforced. Tracked quotas enable reporting on the file system space used by system users. If both this flag and FILE_VC_QUOTA_ENFORCE are specified, FILE_VC_QUOTA_ENFORCE is ignored.
+            static let QUOTA_TRACK = Flags(rawValue: 0x00000001)
+            /// Quotas are tracked and enforced on the volume.
+            static let QUOTA_ENFORCE = Flags(rawValue: 0x00000002)
+            /// Content indexing is disabled.
+            static let CONTENT_INDEX_DISABLED = Flags(rawValue: 0x00000008)
+            /// An event log entry will be created when the user exceeds his or her assigned quota warning threshold.
+            static let LOG_QUOTA_THRESHOLD = Flags(rawValue: 0x00000010)
+            /// An event log entry will be created when the user exceeds the assigned disk quota limit.
+            static let LOG_QUOTA_LIMIT = Flags(rawValue: 0x00000020)
+            /// An event log entry will be created when the volume's free space threshold is exceeded.
+            static let LOG_VOLUME_THRESHOLD = Flags(rawValue: 0x00000040)
+            /// An event log entry will be created when the volume's free space limit is exceeded.
+            static let LOG_VOLUME_LIMIT = Flags(rawValue: 0x00000080)
+            /// The quota information for the volume is incomplete because it is corrupt, or the system is in the process of rebuilding the quota information.
+            static let QUOTAS_INCOMPLETE = Flags(rawValue: 0x00000100)
+            /// The file system is rebuilding the quota information for the volume.
+            static let QUOTAS_REBUILDING = Flags(rawValue: 0x00000200)
+        }
+    }
+    
+    struct FileFsFullSizeInformation {
+        let totalAllocationUnits: Int64
+        let callerAvailableAllocationUnits: Int64
+        let actualAvailableAllocationUnits: Int64
+        let sectorsPerAllocationUnit: UInt32
+        let bytesPerSector: UInt32
+    }
+    
+    struct FileFsObjectIdInformation {
+        let objectId: uuid_t
+        let extendedInfo: (UInt64, UInt64, UInt64, UInt64, UInt64, UInt64)
+    }
+    
+    struct FileFsSectorSizeInformation {
+        let logicalBytesPerSector: UInt32
+        let physicalBytesPerSectorForAtomicity: UInt32
+        let physicalBytesPerSectorForPerformance: UInt32
+        let effectivePhysicalBytesPerSectorForAtomicity: UInt32
+        let flags: Flags
+        let byteOffsetForSectorAlignment: UInt32
+        let byteOffsetForPartitionAlignment: UInt32
+        
+        struct Flags: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            /// When set, this flag indicates that the first physical sector of the device is aligned with the first logical sector. When not set, the first physical sector of the device is misaligned with the first logical sector.
+            static let ALIGNED_DEVICE = Flags(rawValue: 0x00000001)
+            /// When set, this flag indicates that the partition is aligned to physical sector boundaries on the storage device.
+            static let PARTITION_ALIGNED_ON_DEVICE = Flags(rawValue: 0x00000002)
+            /// When set, the device reports that it does not incur a seek penalty (this typically indicates that the device does not have rotating media, such as flash-based disks).
+            static let NO_SEEK_PENALTY = Flags(rawValue: 0x00000008)
+            /// When set, the device supports TRIM operations, either T13 (ATA) TRIM or T10 (SCSI/SAS) UNMAP.
+            static let TRIM_ENABLED = Flags(rawValue: 0x00000010)
+        }
+    }
+}

Sources/SMBTypes/SMB2Session.swift

@@ -0,0 +1,329 @@
+//
+//  SMB2NegotiationTypes.swift
+//  ExtDownloader
+//
+//  Created by Amir Abbas Mousavian on 4/30/95.
+//  Copyright © 1395 Mousavian. All rights reserved.
+//
+
+import Foundation
+
+extension SMB2 {
+    // MARK: SMB2 Negotiating
+    
+    struct NegotiateRequest: SMBRequest {
+        let header: NegotiateRequest.Header
+        let dialects: [UInt16]
+        let contexts: [(type: NegotiateContextType, data: NSData)]
+        
+        init(header: NegotiateRequest.Header, dialects: [UInt16] = [0x0202], contexts: [(type: NegotiateContextType, data: NSData)] = []) {
+            self.header = header
+            self.dialects = dialects
+            self.contexts = contexts
+        }
+        
+        init(dialects: [UInt16] = [0x0202], contexts: [(type: NegotiateContextType, data: NSData)] = [],capabilities: GlobalCapabilities = [], clientStartTime: SMBTime? = nil, guid: uuid_t? = nil, signing: NegotiateSinging = [.ENABLED]) {
+            self.header = Header(capabilities: capabilities, clientStartTime: clientStartTime, guid: guid, signing: signing)
+            self.dialects = dialects
+            self.contexts = contexts
+        }
+        
+        func data() -> NSData {
+            var header = self.header
+            header.dialectCount = UInt16(dialects.count)
+            let dialectData = NSMutableData()
+            for dialect in dialects {
+                var dialect = dialect
+                dialectData.appendBytes(&dialect, length: 2)
+            }
+            let pad = ((1024 - dialectData.length) % 8)
+            dialectData.increaseLengthBy(pad)
+            header.contextOffset = UInt32(sizeof(header.dynamicType.self)) + UInt32(dialectData.length)
+            header.contextCount = UInt16(contexts.count)
+            
+            let contextData = NSMutableData()
+            for context in contexts {
+                var contextType = context.type.rawValue
+                contextData.appendBytes(&contextType, length: 2)
+                var dataLen = UInt16(context.data.length)
+                contextData.increaseLengthBy(4)
+                contextData.appendBytes(&dataLen, length: 2)
+            }
+            let result = NSMutableData(data: encode(&header))
+            result.appendData(dialectData)
+            result.appendData(contextData)
+            return result
+        }
+        
+        struct Header {
+            var size: UInt16
+            var dialectCount: UInt16
+            let signing: NegotiateSinging
+            private let reserved: UInt16
+            let capabilities: GlobalCapabilities
+            let guid: uuid_t
+            var contextOffset: UInt32
+            var contextCount: UInt16
+            private let reserved2: UInt16
+            var clientStartTime: SMBTime {
+                let time = Int64(contextOffset) + (Int64(contextCount) << 32) + (Int64(contextCount) << 48)
+                return SMBTime(time: time)
+            }
+            
+            init(capabilities: GlobalCapabilities, clientStartTime: SMBTime? = nil, guid: uuid_t? = nil, signing: NegotiateSinging = [.ENABLED]) {
+                self.size = 36
+                self.dialectCount = 0
+                self.signing = signing
+                self.reserved = 0
+                self.capabilities = capabilities
+                self.guid = guid ?? (0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)
+                if let clientStartTime = clientStartTime {
+                    let time = clientStartTime.time
+                    self.contextOffset = UInt32(time & 0xffffffff)
+                    self.contextCount = UInt16(time & 0x0000ffff00000000 >> 32)
+                    self.reserved2 = UInt16(time >> 48)
+                } else {
+                    self.contextOffset = 0
+                    self.contextCount = 0
+                    self.reserved2 = 0
+                }
+            }
+        }
+    }
+    
+    struct NegotiateResponse: SMBResponse {
+        let header: NegotiateResponse.Header
+        let buffer: NSData?
+        let contexts: [(type: NegotiateContextType, data: NSData)]
+        
+        init? (data: NSData) {
+            if data.length < 64 {
+                return nil
+            }
+            self.header = decode(data)
+            if Int(header.size) != 65 {
+                return nil
+            }
+            let bufOffset = Int(self.header.bufferOffset) - sizeof(SMB2.Header.self)
+            let bufLen = Int(self.header.bufferLength)
+            if bufOffset > 0 && bufLen > 0 && data.length >= bufOffset + bufLen {
+                self.buffer = data.subdataWithRange(NSRange(location: bufOffset, length: bufLen))
+            } else {
+                self.buffer = nil
+            }
+            let contextCount = Int(self.header.contextCount)
+            let contextOffset = Int(self.header.contextOffset) - sizeof(SMB2.Header.self)
+            if  contextCount > 0 &&  contextOffset > 0 {
+                // TODO: NegotiateResponse context support for SMB3
+                self.contexts = []
+            } else {
+                self.contexts = []
+            }
+        }
+        
+        struct Header {
+            let size: UInt16
+            let singing: NegotiateSinging
+            let dialect: UInt16
+            let contextCount: UInt16
+            let serverGuid: uuid_t
+            let capabilities: GlobalCapabilities
+            let maxTransactSize: UInt32
+            let maxReadSize: UInt32
+            let maxWriteSize: UInt32
+            let systemTime: SMBTime
+            let serverStartTime: SMBTime
+            let bufferOffset: UInt16
+            let bufferLength: UInt16
+            let contextOffset: UInt32
+        }
+    }
+    
+    struct NegotiateSinging: OptionSetType {
+        let rawValue: UInt16
+        
+        init(rawValue: UInt16) {
+            self.rawValue = rawValue
+        }
+        static let ENABLED   = NegotiateSinging(rawValue: 0x0001)
+        static let REQUIRED  = NegotiateSinging(rawValue: 0x0002)
+    }
+    
+    struct NegotiateContextType: OptionSetType {
+        let rawValue: UInt16
+        
+        init(rawValue: UInt16) {
+            self.rawValue = rawValue
+        }
+        static let PREAUTH_INTEGRITY_CAPABILITIES   = NegotiateContextType(rawValue: 0x0001)
+        static let ENCRYPTION_CAPABILITIES          = NegotiateContextType(rawValue: 0x0002)
+    }
+    
+    struct GlobalCapabilities: OptionSetType {
+        let rawValue: UInt32
+        
+        init(rawValue: UInt32) {
+            self.rawValue = rawValue
+        }
+        static let DFS                  = GlobalCapabilities(rawValue: 0x00000001)
+        static let LEASING              = GlobalCapabilities(rawValue: 0x00000002)
+        static let LARGE_MTU            = GlobalCapabilities(rawValue: 0x00000004)
+        static let MULTI_CHANNEL        = GlobalCapabilities(rawValue: 0x00000008)
+        static let PERSISTENT_HANDLES   = GlobalCapabilities(rawValue: 0x00000010)
+        static let DIRECTORY_LEASING    = GlobalCapabilities(rawValue: 0x00000020)
+        static let ENCRYPTION           = GlobalCapabilities(rawValue: 0x00000040)
+    }
+    
+    // MARK: SMB2 Session Setup
+    
+    struct SessionSetupRequest: SMBRequest {
+        let header: SessionSetupRequest.Header
+        let buffer: NSData?
+        
+        init(header: SessionSetupRequest.Header, buffer: NSData) {
+            self.header = header
+            self.buffer = buffer
+        }
+        
+        init(sessionId: UInt64 = 0, flags: SessionSetupRequest.Flags = [], singing: SessionSetupSinging = [.ENABLED], capabilities: GlobalCapabilities = [], securityData: NSData? = nil) {
+            self.header = Header(sessionId: sessionId, flags: flags, singing: singing, capabilities: capabilities)
+            self.buffer = securityData
+        }
+        
+        func data() -> NSData {
+            var header = self.header
+            header.bufferOffset = UInt16(sizeof(SMB2.Header.self) + sizeof(SessionSetupRequest.Header.self))
+            header.bufferLength = UInt16(buffer?.length ?? 0)
+            let result = NSMutableData(data: encode(&header))
+            if let buffer = self.buffer {
+                result.appendData(buffer)
+            }
+            return result
+        }
+        
+        struct Header {
+            let size: UInt16
+            let flags: SessionSetupRequest.Flags
+            let signing: SessionSetupSinging
+            let capabilities: GlobalCapabilities
+            private let channel: UInt32
+            var bufferOffset: UInt16
+            var bufferLength: UInt16
+            let sessionId: UInt64
+            
+            init(sessionId: UInt64, flags: SessionSetupRequest.Flags = [], singing: SessionSetupSinging, capabilities: GlobalCapabilities) {
+                self.size = 25
+                self.flags = flags
+                self.signing = singing
+                self.capabilities = capabilities
+                self.channel = 0
+                self.bufferOffset = 0
+                self.bufferLength = 0
+                self.sessionId = sessionId
+            }
+        }
+        
+        /// Works the client implements the SMB 3.x dialect family
+        struct Flags: OptionSetType {
+            let rawValue: UInt8
+            
+            init(rawValue: UInt8) {
+                self.rawValue = rawValue
+            }
+            
+            static let BINDING = NegotiateSinging(rawValue: 0x01)
+        }
+    }
+    
+    struct SessionSetupResponse: SMBResponse {
+        let header: SessionSetupResponse.Header
+        let buffer: NSData?
+        
+        init? (data: NSData) {
+            if data.length < 64 {
+                return nil
+            }
+            self.header = decode(data)
+            if Int(header.size) != 9 {
+                return nil
+            }
+            let bufOffset = Int(self.header.bufferOffset) - sizeof(SMB2.Header.self)
+            let bufLen = Int(self.header.bufferLength)
+            if bufOffset > 0 && bufLen > 0 && data.length >= bufOffset + bufLen {
+                self.buffer = data.subdataWithRange(NSRange(location: bufOffset, length: bufLen))
+            } else {
+                self.buffer = nil
+            }
+        }
+        
+        struct Header {
+            let size: UInt16
+            let flags: SessionSetupResponse.Flags
+            let bufferOffset: UInt16
+            let bufferLength: UInt16
+        }
+        
+        struct Flags: OptionSetType {
+            let rawValue: UInt16
+            
+            init(rawValue: UInt16) {
+                self.rawValue = rawValue
+            }
+            
+            static let IS_GUEST     = Flags(rawValue: 0x0001)
+            static let IS_NULL      = Flags(rawValue: 0x0002)
+            static let ENCRYPT_DATA = Flags(rawValue: 0x0004)
+        }
+    }
+    
+    struct SessionSetupSinging: OptionSetType {
+        let rawValue: UInt8
+        
+        init(rawValue: UInt8) {
+            self.rawValue = rawValue
+        }
+        
+        static let ENABLED   = SessionSetupSinging(rawValue: 0x01)
+        static let REQUIRED  = SessionSetupSinging(rawValue: 0x02)
+    }
+    
+    // MARK: SMB2 Log off
+    
+    struct LogOff: SMBRequest, SMBResponse {
+        let size: UInt16
+        let reserved: UInt16
+        
+        init() {
+            self.size = 4
+            self.reserved = 0
+        }
+        
+        init? (data: NSData) {
+            self = decode(data)
+        }
+        
+        func data() -> NSData {
+            return encode(self)
+        }
+    }
+    
+    // MARK: SMB2 Echo
+    
+    struct Echo: SMBRequest, SMBResponse {
+        let size: UInt16
+        let reserved: UInt16
+        
+        init() {
+            self.size = 4
+            self.reserved = 0
+        }
+        
+        init? (data: NSData) {
+            self = decode(data)
+        }
+        
+        func data() -> NSData {
+            return encode(self)
+        }
+    }
+}

Sources/SMBTypes/SMB2SetInfo.swift

@@ -0,0 +1,46 @@
+//
+//  SMB2SetInfo.swift
+//  ExtDownloader
+//
+//  Created by Amir Abbas Mousavian on 4/31/95.
+//  Copyright © 1395 Mousavian. All rights reserved.
+//
+
+import Foundation
+
+extension SMB2 {
+    // MARK: SMB2 Set Info
+    struct SetInfoRequest: SMBRequest {
+        let header: Header
+        let buffer: NSData?
+        
+        
+        
+        func data() -> NSData {
+            return NSData()
+        }
+        
+        struct Header {
+            let size: UInt16 = 33
+            let infoType: UInt8
+            private let infoClass: UInt8
+            let bufferLength: UInt32
+            let bufferOffset: UInt16
+            private let reserved: UInt16
+            let securityInfo: FileSecurityInfo
+            let fileId: FileId
+        }
+    }
+    
+    struct SetInfoResponse: SMBResponse {
+        let size: UInt16
+        
+        init() {
+            self.size = 2
+        }
+        
+        init? (data: NSData) {
+            self = decode(data)
+        }
+    }
+}

Sources/SMBTypes/SMB2Tree.swift

@@ -0,0 +1,151 @@
+//
+//  SMB2Tree.swift
+//  ExtDownloader
+//
+//  Created by Amir Abbas Mousavian on 4/30/95.
+//  Copyright © 1395 Mousavian. All rights reserved.
+//
+
+import Foundation
+
+extension SMB2 {
+    // MARK: SMB2 Tree Connect
+    
+    struct TreeConnectRequest: SMBRequest {
+        let header: TreeConnectRequest.Header
+        let buffer: NSData?
+        var path: String {
+            return ""
+        }
+        var share: String {
+            return ""
+        }
+        
+        init? (header: TreeConnectRequest.Header, host: String, share: String) {
+            guard !host.containsString("/") && !share.containsString("/") else {
+                return nil
+            }
+            self.header = header
+            let path = "\\\\\(host)\\\(share)"
+            self.buffer = path.dataUsingEncoding(NSUTF16StringEncoding)
+        }
+        
+        func data() -> NSData {
+            var header = self.header
+            header.pathOffset = UInt16(sizeof(SMB2.Header.self) + sizeof(TreeConnectRequest.Header.self))
+            header.pathLength = UInt16(buffer?.length ?? 0)
+            let result = NSMutableData(data: encode(&header))
+            if let buffer = self.buffer {
+                result.appendData(buffer)
+            }
+            return result
+        }
+        
+        struct Header {
+            let size: UInt16
+            let flags: TreeConnectRequest.Flags
+            var pathOffset: UInt16
+            var pathLength: UInt16
+            
+            init(flags: TreeConnectRequest.Flags) {
+                self.size = 9
+                self.flags = flags
+                self.pathOffset = 0
+                self.pathLength = 0
+            }
+        }
+        
+        struct Flags: OptionSetType {
+            let rawValue: UInt16
+            
+            init(rawValue: UInt16) {
+                self.rawValue = rawValue
+            }
+            
+            static let SHAREFLAG_CLUSTER_RECONNECT = Flags(rawValue: 0x0001)
+        }
+    }
+    
+    struct TreeConnectResponse: SMBResponse {
+        let size: UInt16  // = 16
+        private let _type: UInt8
+        var type: ShareType {
+            return ShareType(rawValue: _type) ?? .UNKNOWN
+        }
+        private let reserved: UInt8
+        let flags: TreeConnectResponse.ShareFlags
+        let capabilities: TreeConnectResponse.Capabilities
+        let maximalAccess: FileAccessMask
+        
+        init? (data: NSData) {
+            if data.length != 16 {
+                return nil
+            }
+            self = decode(data)
+        }
+        
+        enum ShareType: UInt8 {
+            case UNKNOWN  = 0x00
+            case DISK     = 0x01
+            case PIPE     = 0x02
+            case PRINT    = 0x03
+        }
+        
+        struct ShareFlags: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            static let DFS                          = ShareFlags(rawValue: 0x00000001)
+            static let DFS_ROOT                     = ShareFlags(rawValue: 0x00000002)
+            static let MANUAL_CACHING               = ShareFlags(rawValue: 0x00000000)
+            static let AUTO_CACHING                 = ShareFlags(rawValue: 0x00000010)
+            static let VDO_CACHING                  = ShareFlags(rawValue: 0x00000020)
+            static let NO_CACHING                   = ShareFlags(rawValue: 0x00000030)
+            static let RESTRICT_EXCLUSIVE_OPENS     = ShareFlags(rawValue: 0x00000100)
+            static let FORCE_SHARED_DELETE          = ShareFlags(rawValue: 0x00000200)
+            static let ALLOW_NAMESPACE_CACHING      = ShareFlags(rawValue: 0x00000400)
+            static let ACCESS_BASED_DIRECTORY_ENUM  = ShareFlags(rawValue: 0x00000800)
+            static let FORCE_LEVELII_OPLOCK         = ShareFlags(rawValue: 0x00001000)
+            static let ENABLE_HASH_V1               = ShareFlags(rawValue: 0x00002000)
+            static let ENABLE_HASH_V2               = ShareFlags(rawValue: 0x00004000)
+            static let ENCRYPT_DATA                 = ShareFlags(rawValue: 0x00008000)
+        }
+        
+        struct Capabilities: OptionSetType {
+            let rawValue: UInt32
+            
+            init(rawValue: UInt32) {
+                self.rawValue = rawValue
+            }
+            
+            static let DFS                      = Capabilities(rawValue: 0x00000008)
+            static let CONTINUOUS_AVAILABILITY  = Capabilities(rawValue: 0x00000010)
+            static let SCALEOUT                 = Capabilities(rawValue: 0x00000020)
+            static let CLUSTER                  = Capabilities(rawValue: 0x00000040)
+            static let ASYMMETRIC               = Capabilities(rawValue: 0x00000080)
+        }
+    }
+    
+    // MARK: SMB2 Tree Disconnect
+    
+    struct TreeDisconnect: SMBRequest, SMBResponse {
+        let size: UInt16
+        let reserved: UInt16
+        
+        init() {
+            self.size = 4
+            self.reserved = 0
+        }
+        
+        init? (data: NSData) {
+            self = decode(data)
+        }
+        
+        func data() -> NSData {
+            return encode(self)
+        }
+    }
+}

Sources/SMBTypes/SMB2Types.swift

@@ -0,0 +1,131 @@
+//
+//  SMB2Types.swift
+//  FileProvider
+//
+//  Created by Amir Abbas Mousavian.
+//  Copyright © 2016 Mousavian. Distributed under MIT license.
+//
+
+import Foundation
+
+// SMB2 Types
+struct SMB2 {
+    struct Header: FileProviderSMBHeader { // 64 bytes
+        // header is always \u{fe}SMB
+        let protocolID: UInt32
+        static let protocolConst: UInt32 = 0x424d53fe
+        let size: UInt16
+        let creditCharge: UInt16
+        // error messages from the server to the client
+        let status: UInt32
+        enum StatusSeverity: UInt8 {
+            case Success = 0, Information, Warning, Error
+        }
+        var statusDetails: (severity: StatusSeverity, customer: Bool, facility: UInt16, code: UInt16) {
+            let severity = StatusSeverity(rawValue: UInt8(status >> 30))!
+            return (severity, status & 0x20000000 != 0, UInt16((status & 0x0FFF0000) >> 16), UInt16(status & 0x0000FFFF))
+        }
+        private let _command: UInt16
+        var command: Command {
+            get {
+                return Command(rawValue: _command) ?? .INVALID
+            }
+        }
+        let creditRequestResponse: UInt16
+        let flags: Flags
+        var nextCommand: UInt32
+        let messageId: UInt64
+        private let reserved: UInt32
+        let treeId: UInt32
+        var asyncId: UInt64 {
+            get {
+                return UInt64(reserved) + (UInt64(treeId) << 32)
+            }
+        }
+        let sessionId: UInt64
+        let signature: (UInt64, UInt64)
+        
+        init(command: Command, status: NTStatus = .SUCCESS, creditCharge: UInt16 = 0, creditRequestResponse: UInt16, flags: Flags = [], nextCommand: UInt32 = 0, messageId: UInt64, treeId: UInt32, sessionId: UInt64, signature: (UInt64, UInt64) = (0, 0)) {
+            self.protocolID = self.dynamicType.protocolConst
+            self.size = 64
+            self.status = status.rawValue
+            self._command = command.rawValue
+            self.creditCharge = creditCharge
+            self.creditRequestResponse = creditRequestResponse
+            self.flags = flags
+            self.nextCommand = nextCommand
+            self.messageId = messageId
+            self.reserved = 0
+            self.treeId = treeId
+            self.sessionId = sessionId
+            self.signature = signature
+        }
+        
+        init(asyncCommand: Command, status: NTStatus = .SUCCESS, creditCharge: UInt16 = 0, creditRequestResponse: UInt16, flags: Flags = [.ASYNC_COMMAND], nextCommand: UInt32 = 0, messageId: UInt64, asyncId: UInt64, sessionId: UInt64, signature: (UInt64, UInt64) = (0, 0)) {
+            self.protocolID = self.dynamicType.protocolConst
+            self.size = 64
+            self.status = status.rawValue
+            self._command = asyncCommand.rawValue
+            self.creditCharge = creditCharge
+            self.creditRequestResponse = creditRequestResponse
+            self.flags = flags.union([Flags.ASYNC_COMMAND])
+            self.nextCommand = nextCommand
+            self.messageId = messageId
+            self.reserved = UInt32(asyncId & 0xffffffff)
+            self.treeId = UInt32(asyncId >> 32)
+            self.sessionId = sessionId
+            self.signature = signature
+        }
+    }
+    
+    struct Flags: OptionSetType {
+        var rawValue: UInt32
+        
+        init(rawValue: UInt32) {
+            self.rawValue = rawValue
+        }
+        
+        var priorityMask: UInt8 {
+            get {
+                return UInt8((rawValue & Flags.PRIORITY_MASK.rawValue)  >> 4)
+            }
+            set {
+                rawValue = (rawValue & 0xffffff8f) | (UInt32(newValue & 0x7) << 4)
+            }
+        }
+        
+        static let SERVER_TO_REDIR       = Flags(rawValue: 0x00000001)
+        static let ASYNC_COMMAND         = Flags(rawValue: 0x00000002)
+        static let RELATED_OPERATIONS    = Flags(rawValue: 0x00000004)
+        static let SIGNED                = Flags(rawValue: 0x00000008)
+        private static let PRIORITY_MASK = Flags(rawValue: 0x00000070)
+        static let DFS_OPERATIONS        = Flags(rawValue: 0x10000000)
+        static let REPLAY_OPERATION      = Flags(rawValue: 0x20000000)
+    }
+    
+    enum Command: UInt16 {
+        case NEGOTIATE              = 0x0000
+        case SESSION_SETUP          = 0x0001
+        case LOGOFF                 = 0x0002
+        case TREE_CONNECT           = 0x0003
+        case TREE_DISCONNECT        = 0x0004
+        case CREATE                 = 0x0005
+        case CLOSE                  = 0x0006
+        case FLUSH                  = 0x0007
+        case READ                   = 0x0008
+        case WRITE                  = 0x0009
+        case LOCK                   = 0x000A
+        case IOCTL                  = 0x000B
+        case CANCEL                 = 0x000C
+        case ECHO                   = 0x000D
+        case QUERY_DIRECTORY        = 0x000E
+        case CHANGE_NOTIFY          = 0x000F
+        case QUERY_INFO             = 0x0010
+        case SET_INFO               = 0x0011
+        case OPLOCK_BREAK           = 0x0012
+        case INVALID                = 0xFFFF
+    }
+    
+    // MARK: SMB2 Oplock Break
+    
+}

Sources/SMBTypes/SMBErrorType.swift

@@ -0,0 +1,208 @@
+//
+//  SMBErrorType.swift
+//  ExtDownloader
+//
+//  Created by Amir Abbas Mousavian on 4/30/95.
+//  Copyright © 1395 Mousavian. All rights reserved.
+//
+
+import Foundation
+
+/// Error Types and Description
+
+public enum NTStatus: UInt32, ErrorType, CustomStringConvertible {
+    case SUCCESS                        = 0x00000000
+    case NOT_IMPLEMENTED                = 0xC0000002
+    case INVALID_DEVICE_REQUEST         = 0xC0000010
+    case ILLEGAL_FUNCTION               = 0xC00000AF
+    case NO_SUCH_FILE                   = 0xC000000F
+    case NO_SUCH_DEVICE                 = 0xC000000E
+    case OBJECT_NAME_NOT_FOUND          = 0xC0000034
+    case OBJECT_PATH_INVALID            = 0xC0000039
+    case OBJECT_PATH_NOT_FOUND          = 0xC000003A
+    case OBJECT_PATH_SYNTAX_BAD         = 0xC000003B
+    case DFS_EXIT_PATH_FOUND            = 0xC000009B
+    case REDIRECTOR_NOT_STARTED         = 0xC00000FB
+    case TOO_MANY_OPENED_FILES          = 0xC000011F
+    case ACCESS_DENIED                  = 0xC0000022
+    case INVALID_LOCK_SEQUENCE          = 0xC000001E
+    case INVALID_VIEW_SIZE              = 0xC000001F
+    case ALREADY_COMMITTED              = 0xC0000021
+    case PORT_CONNECTION_REFUSED        = 0xC0000041
+    case THREAD_IS_TERMINATING          = 0xC000004B
+    case DELETE_PENDING                 = 0xC0000056
+    case PRIVILEGE_NOT_HELD             = 0xC0000061
+    case LOGON_FAILURE                  = 0xC000006D
+    case FILE_IS_A_DIRECTORY            = 0xC00000BA
+    case FILE_RENAMED                   = 0xC00000D5
+    case PROCESS_IS_TERMINATING         = 0xC000010A
+    case DIRECTORY_NOT_EMPTY            = 0xC0000101
+    case CANNOT_DELETE                  = 0xC0000121
+    case FILE_NOT_AVAILABLE             = 0xC0000467
+    case FILE_DELETED                   = 0xC0000123
+    case SMB_BAD_FID                    = 0x00060001
+    case INVALID_HANDLE                 = 0xC0000008
+    case OBJECT_TYPE_MISMATCH           = 0xC0000024
+    case PORT_DISCONNECTED              = 0xC0000037
+    case INVALID_PORT_HANDLE            = 0xC0000042
+    case FILE_CLOSED                    = 0xC0000128
+    case HANDLE_NOT_CLOSABLE            = 0xC0000235
+    case SECTION_TOO_BIG                = 0xC0000040
+    case TOO_MANY_PAGING_FILES          = 0xC0000097
+    case INSUFF_SERVER_RESOURCES        = 0xC0000205
+    case OS2_INVALID_ACCESS             = 0x000C0001
+    case ACCESS_DENIED_2                = 0xC00000CA
+    case DATA_ERROR                     = 0xC000009C
+    case NOT_SAME_DEVICE                = 0xC00000D4
+    case NO_MORE_FILES                  = 0x80000006
+    case NO_MORE_ENTRIES                = 0x8000001A
+    case UNSUCCESSFUL                   = 0xC0000001
+    case SHARING_VIOLATION              = 0xC0000043
+    case FILE_LOCK_CONFLICT             = 0xC0000054
+    case LOCK_NOT_GRANTED               = 0xC0000055
+    case END_OF_FILE                    = 0xC0000011
+    case NOT_SUPPORTED                  = 0xC00000BB
+    case OBJECT_NAME_COLLISION          = 0xC0000035
+    case INVALID_PARAMETER              = 0xC000000D
+    case OS2_INVALID_LEVEL              = 0x007C0001
+    case OS2_NEGATIVE_SEEK              = 0x00830001
+    case RANGE_NOT_LOCKED               = 0xC000007E
+    case OS2_NO_MORE_SIDS               = 0x00710001
+    case OS2_CANCEL_VIOLATION           = 0x00AD0001
+    case OS2_ATOMIC_LOCKS_NOT_SUPPORTED = 0x00AE0001
+    case INVALID_INFO_CLASS             = 0xC0000003
+    case INVALID_PIPE_STATE             = 0xC00000AD
+    case INVALID_READ_MODE              = 0xC00000B4
+    case OS2_CANNOT_COPY                = 0x010A0001
+    case STOPPED_ON_SYMLINK             = 0x8000002D
+    case INSTANCE_NOT_AVAILABLE         = 0xC00000AB
+    case PIPE_NOT_AVAILABLE             = 0xC00000AC
+    case PIPE_BUSY                      = 0xC00000AE
+    case PIPE_CLOSING                   = 0xC00000B1
+    case PIPE_EMPTY                     = 0xC00000D9
+    case PIPE_DISCONNECTED              = 0xC00000B0
+    case BUFFER_OVERFLOW                = 0x80000005
+    case MORE_PROCESSING_REQUIRED       = 0xC0000016
+    case EA_TOO_LARGE                   = 0xC0000050
+    case OS2_EAS_DIDNT_FIT              = 0x01130001
+    case EAS_NOT_SUPPORTED              = 0xC000004F
+    case EA_LIST_INCONSISTENT           = 0x80000014
+    case OS2_EA_ACCESS_DENIED           = 0x03E20001
+    case NOTIFY_ENUM_DIR                = 0x0000010C
+    case INVALID_SMB                    = 0x00010002
+    case WRONG_PASSWORD                 = 0xC000006A
+    case PATH_NOT_COVERED               = 0xC0000257
+    case NETWORK_NAME_DELETED           = 0xC00000C9
+    case SMB_BAD_TID                    = 0x00050002
+    case BAD_NETWORK_NAME               = 0xC00000CC
+    case BAD_DEVICE_TYPE                = 0xC00000CB
+    case SMB_BAD_COMMAND                = 0x00160002
+    case PRINT_QUEUE_FULL               = 0xC00000C6
+    case NO_SPOOL_SPACE                 = 0xC00000C7
+    case PRINT_CANCELLED                = 0xC00000C8
+    case UNEXPECTED_NETWORK_ERROR       = 0xC00000C4
+    case IO_TIMEOUT                     = 0xC00000B5
+    case REQUEST_NOT_ACCEPTED           = 0xC00000D0
+    case TOO_MANY_SESSIONS              = 0xC00000CE
+    case SMB_BAD_UID                    = 0x005B0002
+    case SMB_USE_MPX                    = 0x00FA0002
+    case SMB_USE_STANDARD               = 0x00FB0002
+    case SMB_CONTINUE_MPX               = 0x00FC0002
+    case ACCOUNT_DISABLED               = 0xC0000072
+    case ACCOUNT_EXPIRED                = 0xC0000193
+    case INVALID_WORKSTATION            = 0xC0000070
+    case INVALID_LOGON_HOURS            = 0xC000006F
+    case PASSWORD_EXPIRED               = 0xC0000071
+    case PASSWORD_MUST_CHANGE           = 0xC0000224
+    case SMB_NO_SUPPORT                 = 0xFFFF0002
+    case MEDIA_WRITE_PROTECTED          = 0xC00000A2
+    case NO_MEDIA_IN_DEVICE             = 0xC0000013
+    case INVALID_DEVICE_STATE           = 0xC0000184
+    case DATA_ERROR_2                   = 0xC000003E
+    case CRC_ERROR                      = 0xC000003F
+    case DISK_CORRUPT_ERROR             = 0xC0000032
+    case NONEXISTENT_SECTOR             = 0xC0000015
+    case DEVICE_PAPER_EMPTY             = 0x8000000E
+    case WRONG_VOLUME                   = 0xC0000012
+    case DISK_FULL                      = 0xC000007F
+    case BUFFER_TOO_SMALL               = 0xC0000023
+    case BAD_IMPERSONATION_LEVEL        = 0xC00000A5
+    case USER_SESSION_DELETED           = 0xC0000203
+    case NETWORK_SESSION_EXPIRED        = 0xC000035C
+    case SMB_TOO_MANY_UIDS              = 0xC000205A
+    
+    public var description: String {
+        switch self {
+        case NOT_IMPLEMENTED, INVALID_DEVICE_REQUEST, ILLEGAL_FUNCTION:
+            return "Invalid Function."
+        case NO_SUCH_FILE, NO_SUCH_DEVICE, OBJECT_NAME_NOT_FOUND:
+            return "File not found."
+        case OBJECT_PATH_INVALID, OBJECT_PATH_NOT_FOUND, OBJECT_PATH_SYNTAX_BAD, DFS_EXIT_PATH_FOUND, REDIRECTOR_NOT_STARTED:
+            return "A component in the path prefix is not a directory."
+        case TOO_MANY_OPENED_FILES:
+            return "Too many open files. No FIDs are available."
+        case ACCESS_DENIED, INVALID_LOCK_SEQUENCE, INVALID_VIEW_SIZE, ALREADY_COMMITTED, PORT_CONNECTION_REFUSED, THREAD_IS_TERMINATING, DELETE_PENDING, PRIVILEGE_NOT_HELD, LOGON_FAILURE, FILE_IS_A_DIRECTORY, FILE_RENAMED, PROCESS_IS_TERMINATING, CANNOT_DELETE, FILE_DELETED:
+            return "Access denied."
+        case SMB_BAD_FID, INVALID_HANDLE, OBJECT_TYPE_MISMATCH, PORT_DISCONNECTED, INVALID_PORT_HANDLE, FILE_CLOSED, HANDLE_NOT_CLOSABLE:
+            return "Invalid FID."
+        case SECTION_TOO_BIG, TOO_MANY_PAGING_FILES, INSUFF_SERVER_RESOURCES:
+            return "Insufficient server memory to perform the requested operation."
+        case OS2_INVALID_ACCESS:
+            return "Invalid open mode."
+        case DATA_ERROR:
+            return "Bad data. (May be generated by IOCTL calls on the server.)"
+        case DIRECTORY_NOT_EMPTY:
+            return "Remove of directory failed because it was not empty."
+        case NOT_SAME_DEVICE:
+            return "A file system operation (such as a rename) across two devices was attempted."
+        case NO_MORE_FILES:
+            return "No (more) files found following a file search command."
+        case UNSUCCESSFUL:
+            return "General error."
+        case SHARING_VIOLATION:
+            return "Sharing violation. A requested open mode conflicts with the sharing mode of an existing file handle."
+        case FILE_LOCK_CONFLICT, LOCK_NOT_GRANTED:
+            return "A lock request specified an invalid locking mode, or conflicted with an existing file lock."
+        case END_OF_FILE:
+            return "Attempted to read beyond the end of the file."
+        case NOT_SUPPORTED:
+            return "This command is not supported by the server."
+        case OBJECT_NAME_COLLISION:
+            return "An attempt to create a file or directory failed because an object with the same pathname already exists."
+        case INVALID_PARAMETER:
+            return "A parameter supplied with the message is invalid."
+        case OS2_INVALID_LEVEL:
+            return "Invalid information level."
+        case OS2_NEGATIVE_SEEK:
+            return "An attempt was made to seek to a negative absolute offset within a file."
+        case RANGE_NOT_LOCKED:
+            return "The byte range specified in an unlock request was not locked."
+        case OS2_NO_MORE_SIDS:
+            return "Maximum number of searches has been exhausted."
+        case OS2_CANCEL_VIOLATION:
+            return "No lock request was outstanding for the supplied cancel region."
+        case OS2_ATOMIC_LOCKS_NOT_SUPPORTED:
+            return "The file system does not support atomic changes to the lock type."
+        case INVALID_INFO_CLASS, INVALID_PIPE_STATE, INVALID_READ_MODE:
+            return "Invalid named pipe."
+        case OS2_CANNOT_COPY:
+            return "The copy functions cannot be used."
+        case INSTANCE_NOT_AVAILABLE, PIPE_NOT_AVAILABLE, PIPE_BUSY:
+            return "All instances of the designated named pipe are busy."
+        case PIPE_CLOSING, PIPE_EMPTY:
+            return "The designated named pipe is in the process of being closed."
+        case PIPE_DISCONNECTED:
+            return "The designated named pipe exists, but there is no server process listening on the server side."
+        case BUFFER_OVERFLOW, MORE_PROCESSING_REQUIRED:
+            return "There is more data available to read on the designated named pipe."
+        case EA_TOO_LARGE, OS2_EAS_DIDNT_FIT:
+            return "Either there are no extended attributes, or the available extended attributes did not fit into the response."
+        case EAS_NOT_SUPPORTED:
+            return "The server file system does not support Extended Attributes."
+        case OS2_EA_ACCESS_DENIED:
+            return "Access to the extended attribute was denied."
+        default:
+            return ""
+        }
+    }
+}

Sources/WebDAVFileProvider.swift

@@ -8,53 +8,14 @@
 
 import Foundation
 
-public enum FileProviderWebDavErrorCode: Int {
-    case OK = 200
-    case Created = 201
-    case NoContent = 204
-    case MultiStatus = 207
-    case Forbidden = 403
-    case MethodNotAllowed = 405
-    case Conflict = 409
-    case PreconditionFailed = 412
-    case UnsupportedMediaType = 415
-    case Locked = 423
-    case FailedDependency = 424
-    case BadGateway = 502
-    case InsufficientStorage = 507
-}
-
-public struct FileProviderWebDavError: ErrorType, CustomStringConvertible {
-    let code: FileProviderWebDavErrorCode
-    let url: NSURL
-    
-    public var description: String {
-        switch code {
-        case .OK: return "OK"
-        case .Created: return "Created"
-        case .NoContent: return "No Content"
-        case .MultiStatus: return ""
-        case .Forbidden: return "Forbidden"
-        case .MethodNotAllowed: return "Method Not Allowed"
-        case .Conflict: return "Conflict"
-        case .PreconditionFailed: return "Precondition Failed"
-        case .UnsupportedMediaType: return "Unsupported Media Type"
-        case .Locked: return "Locked"
-        case .FailedDependency: return "Failed Dependency"
-        case .BadGateway: return "Bad Gateway"
-        case .InsufficientStorage: return "Insufficient Storage"
-        }
-    }
-}
-
 public final class WebDavFileObject: FileObject {
-    let contentType: String
-    let entryTag: String?
+    public let contentType: String
+    public let entryTag: String?
     
-    init(absoluteURL: NSURL, name: String, size: Int64, contentType: String, createdDate: NSDate?, modifiedDate: NSDate?, fileType: FileType, isHidden: Bool, isReadOnly: Bool, entryTag: String?) {
+    public init(absoluteURL: NSURL, name: String, path: String, size: Int64, contentType: String, createdDate: NSDate?, modifiedDate: NSDate?, fileType: FileType, isHidden: Bool, isReadOnly: Bool, entryTag: String?) {
         self.contentType = contentType
         self.entryTag = entryTag
-        super.init(absoluteURL: absoluteURL, name: name, size: size, createdDate: createdDate, modifiedDate: modifiedDate, fileType: fileType, isHidden: isHidden, isReadOnly: isReadOnly)
+        super.init(absoluteURL: absoluteURL, name: name, path: path, size: size, createdDate: createdDate, modifiedDate: modifiedDate, fileType: fileType, isHidden: isHidden, isReadOnly: isReadOnly)
     }
 }
 
@@ -71,26 +32,26 @@ public class WebDAVFileProvider: NSObject,  FileProviderBasic {
             assert(_session == nil, "It's not effective to change dispatch_queue property after session is initialized.")
         }
     }
-    public var delegate: FileProviderDelegate?
+    public weak var delegate: FileProviderDelegate?
     public let credential: NSURLCredential?
     
     private var _session: NSURLSession?
     private var session: NSURLSession {
         if _session == nil {
             let queue = NSOperationQueue()
-            queue.underlyingQueue = dispatch_queue
+            //queue.underlyingQueue = dispatch_queue
             _session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration(), delegate: self, delegateQueue: queue)
         }
         return _session!
     }
     
-    init? (baseURL: NSURL, credential: NSURLCredential?) {
-        if  !["http", "https"].contains(baseURL.scheme.lowercaseString) {
+    public init? (baseURL: NSURL, credential: NSURLCredential?) {
+        if  !["http", "https"].contains(baseURL.uw_scheme.lowercaseString) {
             return nil
         }
         self.baseURL = baseURL
         dispatch_queue = dispatch_queue_create("FileProvider.\(type)", DISPATCH_QUEUE_CONCURRENT)
-        //let url = baseURL.absoluteString
+        //let url = baseURL.uw_absoluteString
         self.credential = credential
     }
     
@@ -102,12 +63,15 @@ public class WebDAVFileProvider: NSObject,  FileProviderBasic {
         let url = absoluteURL(path)
         let request = NSMutableURLRequest(URL: url)
         request.HTTPMethod = "PROPFIND"
-        request.setValue(baseURL?.absoluteString, forHTTPHeaderField: "Host")
         request.setValue("1", forHTTPHeaderField: "Depth")
         request.setValue("text/xml; charset=\"utf-8\"", forHTTPHeaderField: "Content-Type")
         request.HTTPBody = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:allprop/></D:propfind>".dataUsingEncoding(NSUTF8StringEncoding)
         request.setValue(String(request.HTTPBody!.length), forHTTPHeaderField: "Content-Length")
         let task = session.dataTaskWithRequest(request) { (data, response, error) in
+            var responseError: FileProviderWebDavError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderWebDavError(code: rCode, url: url)
+            }
             if let data = data {
                 let xresponse = self.parseXMLResponse(data)
                 var fileObjects = [WebDavFileObject]()
@@ -117,118 +81,136 @@ public class WebDAVFileProvider: NSObject,  FileProviderBasic {
                     }
                     fileObjects.append(self.mapToFileObject(attr))
                 }
-                completionHandler(contents: fileObjects, error: error)
+                completionHandler(contents: fileObjects, error: responseError ?? error)
                 return
             }
-            completionHandler(contents: [], error: error)
+            completionHandler(contents: [], error: responseError ?? error)
         }
         task.resume()
     }
     
     public func attributesOfItemAtPath(path: String, completionHandler: ((attributes: FileObject?, error: ErrorType?) -> Void)) {
-        let request = NSMutableURLRequest(URL: absoluteURL(path))
+        let url = absoluteURL(path)
+        let request = NSMutableURLRequest(URL: url)
         request.HTTPMethod = "PROPFIND"
-        request.setValue(baseURL?.absoluteString, forHTTPHeaderField: "Host")
         request.setValue("1", forHTTPHeaderField: "Depth")
         request.setValue("text/xml; charset=\"utf-8\"", forHTTPHeaderField: "Content-Type")
         request.HTTPBody = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:allprop/></D:propfind>".dataUsingEncoding(NSUTF8StringEncoding)
         request.setValue(String(request.HTTPBody!.length), forHTTPHeaderField: "Content-Length")
         let task = session.dataTaskWithRequest(request) { (data, response, error) in
+            var responseError: FileProviderWebDavError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderWebDavError(code: rCode, url: url)
+            }
             if let data = data {
                 let xresponse = self.parseXMLResponse(data)
                 if let attr = xresponse.first {
-                    completionHandler(attributes: self.mapToFileObject(attr), error: error)
+                    completionHandler(attributes: self.mapToFileObject(attr), error: responseError ?? error)
                     return
                 }
             }
-            completionHandler(attributes: nil, error: error)
+            completionHandler(attributes: nil, error: responseError ?? error)
         }
         task.resume()
     }
+    
+    public func storageProperties(completionHandler: ((total: Int64, used: Int64) -> Void)) {
+        // Not all WebDAV clients implements RFC2518 which allows geting storage quota.
+        // In this case you won't get error. totalSize is NSURLSessionTransferSizeUnknown
+        // and used space is zero.
+        guard let baseURL = baseURL else {
+            return
+        }
+        let request = NSMutableURLRequest(URL: baseURL)
+        request.HTTPMethod = "PROPFIND"
+        request.setValue("0", forHTTPHeaderField: "Depth")
+        request.setValue("text/xml; charset=\"utf-8\"", forHTTPHeaderField: "Content-Type")
+        request.HTTPBody = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:prop><D:quota-available-bytes/><D:quota-used-bytes/></D:prop>\n</D:propfind>".dataUsingEncoding(NSUTF8StringEncoding)
+        request.setValue(String(request.HTTPBody!.length), forHTTPHeaderField: "Content-Length")
+        let task = session.dataTaskWithRequest(request) { (data, response, error) in
+            if let data = data {
+                let xresponse = self.parseXMLResponse(data)
+                if let attr = xresponse.first {
+                    let totalSize = Int64(attr.prop["quota-available-bytes"] ?? "")
+                    let usedSize = Int64(attr.prop["quota-used-bytes"] ?? "")
+                    completionHandler(total: totalSize ?? -1, used: usedSize ?? 0)
+                    return
+                }
+            }
+            completionHandler(total: -1, used: 0)
+        }
+        task.resume()
+    }
+    
+    public weak var fileOperationDelegate: FileOperationDelegate?
 }
 
 extension WebDAVFileProvider: FileProviderOperations {
     public func createFolder(folderName: String, atPath: String, completionHandler: SimpleCompletionHandler) {
-        let session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration())
         let url = absoluteURL((atPath as NSString).stringByAppendingPathComponent(folderName) + "/")
         let request = NSMutableURLRequest(URL: url)
         request.HTTPMethod = "MKCOL"
-        request.setValue(baseURL?.absoluteString, forHTTPHeaderField: "Host")
         let task = session.dataTaskWithRequest(request) { (data, response, error) in
-            if let response = response as? NSHTTPURLResponse, let code = FileProviderWebDavErrorCode(rawValue: response.statusCode) where code != .OK {
+            var responseError: FileProviderWebDavError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderWebDavError(code: rCode, url: url)
+            }
+            if let response = response as? NSHTTPURLResponse, let code = FileProviderHTTPErrorCode(rawValue: response.statusCode) where code != .OK {
                 completionHandler?(error: FileProviderWebDavError(code: code, url: url))
                 return
             }
-            completionHandler?(error: error)
-            self.delegateNotify(.Create(path: (atPath as NSString).stringByAppendingPathComponent(folderName) + "/"), error: error)
+            completionHandler?(error: responseError ?? error)
+            self.delegateNotify(.Create(path: (atPath as NSString).stringByAppendingPathComponent(folderName) + "/"), error: responseError ?? error)
         }
         task.resume()
     }
     
     public func createFile(fileAttribs: FileObject, atPath path: String, contents data: NSData?, completionHandler: SimpleCompletionHandler) {
-        let request = NSMutableURLRequest(URL: absoluteURL(path))
+        let url = absoluteURL(path)
+        let request = NSMutableURLRequest(URL: url)
         request.HTTPMethod = "PUT"
         let task = session.uploadTaskWithRequest(request, fromData: data) { (data, response, error) in
-            completionHandler?(error: error)
-            self.delegateNotify(.Create(path: (path as NSString).stringByAppendingPathComponent(fileAttribs.name)), error: error)
+            var responseError: FileProviderWebDavError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderWebDavError(code: rCode, url: url)
+            }
+            completionHandler?(error: responseError ?? error)
+            self.delegateNotify(.Create(path: (path as NSString).stringByAppendingPathComponent(fileAttribs.name)), error: responseError ?? error)
         }
         task.taskDescription = self.dictionaryToJSON(["type": "Create", "source": (path as NSString).stringByAppendingPathComponent(fileAttribs.name)])
         task.resume()
     }
     
     public func moveItemAtPath(path: String, toPath: String, overwrite: Bool = false, completionHandler: SimpleCompletionHandler) {
-        let session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration())
-        let url = absoluteURL(path)
-        let request = NSMutableURLRequest(URL: url)
-        request.HTTPMethod = "MOVE"
-        request.setValue(baseURL?.absoluteString, forHTTPHeaderField: "Host")
-        request.setValue(absoluteURL(path).absoluteString, forHTTPHeaderField: "Destination")
-        if !overwrite {
-            request.setValue("F", forHTTPHeaderField: "Overwrite")
-        }
-        let task = session.dataTaskWithRequest(request) { (data, response, error) in
-            if let response = response as? NSHTTPURLResponse, let code = FileProviderWebDavErrorCode(rawValue: response.statusCode) {
-                defer {
-                    self.delegateNotify(.Move(source: path, destination: toPath), error: error)
-                }
-                if code == .MultiStatus, let data = data {
-                    let xresponses = self.parseXMLResponse(data)
-                    for xresponse in xresponses {
-                        if xresponse.status >= 300 {
-                            completionHandler?(error: FileProviderWebDavError(code: code, url: url))
-                        }
-                    }
-                } else {
-                    completionHandler?(error: FileProviderWebDavError(code: code, url: url))
-                }
-                return
-            }
-            completionHandler?(error: error)
-        }
-        task.resume()
+        self.copyMoveItemAtPath(true, path: path, toPath: toPath, overwrite: overwrite, completionHandler: completionHandler)
     }
     
     public func copyItemAtPath(path: String, toPath: String, overwrite: Bool = false, completionHandler: SimpleCompletionHandler) {
-        let session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration())
+        self.copyMoveItemAtPath(false, path: path, toPath: toPath, overwrite: overwrite, completionHandler: completionHandler)
+    }
+    
+    private func copyMoveItemAtPath(move:Bool, path: String, toPath: String, overwrite: Bool, completionHandler: SimpleCompletionHandler) {
         let url = absoluteURL(path)
         let request = NSMutableURLRequest(URL: url)
-        request.HTTPMethod = "COPY"
-        request.setValue(baseURL?.absoluteString, forHTTPHeaderField: "Host")
-        request.setValue(absoluteURL(path).absoluteString, forHTTPHeaderField: "Destination")
+        if move {
+            request.HTTPMethod = "MOVE"
+        } else {
+            request.HTTPMethod = "COPY"
+        }
+        request.setValue(absoluteURL(path).uw_absoluteString, forHTTPHeaderField: "Destination")
         if !overwrite {
             request.setValue("F", forHTTPHeaderField: "Overwrite")
         }
         let task = session.dataTaskWithRequest(request) { (data, response, error) in
-            if let response = response as? NSHTTPURLResponse, let code = FileProviderWebDavErrorCode(rawValue: response.statusCode) {
+            if let response = response as? NSHTTPURLResponse, let code = FileProviderHTTPErrorCode(rawValue: response.statusCode) {
                 defer {
-                    self.delegateNotify(.Copy(source: path, destination: toPath), error: error)
+                    let op = move ? FileOperation.Move(source: path, destination: toPath) : .Copy(source: path, destination: toPath)
+                    self.delegateNotify(op, error: error)
                 }
                 if code == .MultiStatus, let data = data {
                     let xresponses = self.parseXMLResponse(data)
-                    for xresponse in xresponses {
-                        if xresponse.status >= 300 {
-                            completionHandler?(error: FileProviderWebDavError(code: code, url: url))
-                        }
+                    for xresponse in xresponses where xresponse.status >= 300 {
+                        completionHandler?(error: FileProviderWebDavError(code: code, url: url))
                     }
                 } else {
                     completionHandler?(error: FileProviderWebDavError(code: code, url: url))
@@ -241,22 +223,18 @@ extension WebDAVFileProvider: FileProviderOperations {
     }
     
     public func removeItemAtPath(path: String, completionHandler: SimpleCompletionHandler) {
-        let session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration())
         let url = absoluteURL(path)
         let request = NSMutableURLRequest(URL: url)
         request.HTTPMethod = "DELETE"
-        request.setValue(baseURL?.absoluteString, forHTTPHeaderField: "Host")
         let task = session.dataTaskWithRequest(request) { (data, response, error) in
-            if let response = response as? NSHTTPURLResponse, let code = FileProviderWebDavErrorCode(rawValue: response.statusCode) {
+            if let response = response as? NSHTTPURLResponse, let code = FileProviderHTTPErrorCode(rawValue: response.statusCode) {
                 defer {
                     self.delegateNotify(.Remove(path: path), error: error)
                 }
                 if code == .MultiStatus, let data = data {
                     let xresponses = self.parseXMLResponse(data)
-                    for xresponse in xresponses {
-                        if xresponse.status >= 300 {
-                            completionHandler?(error: FileProviderWebDavError(code: code, url: url))
-                        }
+                    for xresponse in xresponses where xresponse.status >= 300 {
+                        completionHandler?(error: FileProviderWebDavError(code: code, url: url))
                     }
                 } else {
                     completionHandler?(error: FileProviderWebDavError(code: code, url: url))
@@ -269,19 +247,29 @@ extension WebDAVFileProvider: FileProviderOperations {
     }
     
     public func copyLocalFileToPath(localFile: NSURL, toPath: String, completionHandler: SimpleCompletionHandler) {
-        let request = NSMutableURLRequest(URL: absoluteURL(toPath))
+        let url = absoluteURL(toPath)
+        let request = NSMutableURLRequest(URL: url)
         request.HTTPMethod = "PUT"
         let task = session.uploadTaskWithRequest(request, fromFile: localFile) { (data, response, error) in
-            completionHandler?(error: error)
-            self.delegateNotify(.Move(source: localFile.absoluteString, destination: toPath), error: error)
+            var responseError: FileProviderWebDavError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderWebDavError(code: rCode, url: url)
+            }
+            completionHandler?(error: responseError ?? error)
+            self.delegateNotify(.Move(source: localFile.uw_absoluteString, destination: toPath), error: responseError ?? error)
         }
-        task.taskDescription = self.dictionaryToJSON(["type": "Copy", "source": localFile.absoluteString, "dest": toPath])
+        task.taskDescription = self.dictionaryToJSON(["type": "Copy", "source": localFile.uw_absoluteString, "dest": toPath])
         task.resume()
     }
     
     public func copyPathToLocalFile(path: String, toLocalURL: NSURL, completionHandler: SimpleCompletionHandler) {
-        let request = NSMutableURLRequest(URL: absoluteURL(path))
+        let url = absoluteURL(path)
+        let request = NSMutableURLRequest(URL: url)
         let task = session.downloadTaskWithRequest(request) { (sourceFileURL, response, error) in
+            var responseError: FileProviderWebDavError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderWebDavError(code: rCode, url: url)
+            }
             if let sourceFileURL = sourceFileURL {
                 do {
                     try NSFileManager.defaultManager().copyItemAtURL(sourceFileURL, toURL: toLocalURL)
@@ -290,50 +278,57 @@ extension WebDAVFileProvider: FileProviderOperations {
                     return
                 }
             }
-            completionHandler?(error: error)
+            completionHandler?(error: responseError ?? error)
         }
-        task.taskDescription = self.dictionaryToJSON(["type": "Copy", "source": path, "dest": toLocalURL.absoluteString])
+        task.taskDescription = self.dictionaryToJSON(["type": "Copy", "source": path, "dest": toLocalURL.uw_absoluteString])
         task.resume()
     }
 }
 
 extension WebDAVFileProvider: FileProviderReadWrite {
     public func contentsAtPath(path: String, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void)) {
-        let request = NSMutableURLRequest(URL: absoluteURL(path))
-        request.HTTPMethod = "GET"
-        let task = session.dataTaskWithRequest(request) { (data, response, error) in
-            completionHandler(contents: data, error: error)
-        }
-        task.resume()
+        self.contentsAtPath(path, offset: 0, length: -1, completionHandler: completionHandler)
     }
     
     public func contentsAtPath(path: String, offset: Int64, length: Int, completionHandler: ((contents: NSData?, error: ErrorType?) -> Void)) {
-        let session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration())
-        let request = NSMutableURLRequest(URL: absoluteURL(path))
+        let url = absoluteURL(path)
+        let request = NSMutableURLRequest(URL: url)
         request.HTTPMethod = "GET"
-        request.setValue("bytes=\(offset)-\(offset + length)", forHTTPHeaderField: "Range")
+        if length > 0 {
+            request.setValue("bytes=\(offset)-\(offset + length)", forHTTPHeaderField: "Range")
+        } else if offset > 0 && length < 0 {
+            request.setValue("bytes=\(offset)-", forHTTPHeaderField: "Range")
+        }
         let task = session.dataTaskWithRequest(request) { (data, response, error) in
-            completionHandler(contents: data, error: error)
+            var responseError: FileProviderWebDavError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderWebDavError(code: rCode, url: url)
+            }
+            completionHandler(contents: data, error: responseError ?? error)
         }
         task.resume()
     }
     
     public func writeContentsAtPath(path: String, contents data: NSData, atomically: Bool = false, completionHandler: SimpleCompletionHandler) {
         // FIXME: lock destination before writing process
-        let url = atomically ? absoluteURL(path).URLByAppendingPathExtension("tmp") : absoluteURL(path)
+        let url = atomically ? absoluteURL(path).uw_URLByAppendingPathExtension("tmp") : absoluteURL(path)
         let request = NSMutableURLRequest(URL: url)
         request.HTTPMethod = "PUT"
         let task = session.uploadTaskWithRequest(request, fromData: data) { (data, response, error) in
+            var responseError: FileProviderWebDavError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderWebDavError(code: rCode, url: self.absoluteURL(path))
+            }
             defer {
-                self.delegateNotify(.Modify(path: path), error: error)
+                self.delegateNotify(.Modify(path: path), error: responseError ?? error)
+            }
+            if let error = error {
+                completionHandler?(error: error)
+                return
             }
             if atomically {
                 self.moveItemAtPath((path as NSString).stringByAppendingPathExtension("tmp")!, toPath: path, completionHandler: completionHandler)
             }
-            if let error = error {
-                // If there is no error, completionHandler has been executed by move command
-                completionHandler?(error: error)
-            }
         }
         task.taskDescription = self.dictionaryToJSON(["type": "Modify", "source": path])
         task.resume()
@@ -343,13 +338,16 @@ extension WebDAVFileProvider: FileProviderReadWrite {
         let url = absoluteURL(path)
         let request = NSMutableURLRequest(URL: url)
         request.HTTPMethod = "PROPFIND"
-        request.setValue(baseURL?.absoluteString, forHTTPHeaderField: "Host")
         //request.setValue("1", forHTTPHeaderField: "Depth")
         request.setValue("text/xml; charset=\"utf-8\"", forHTTPHeaderField: "Content-Type")
         request.HTTPBody = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:allprop/></D:propfind>".dataUsingEncoding(NSUTF8StringEncoding)
         request.setValue(String(request.HTTPBody!.length), forHTTPHeaderField: "Content-Length")
         let task = session.dataTaskWithRequest(request) { (data, response, error) in
             // FIXME: paginating results
+            var responseError: FileProviderWebDavError?
+            if let code = (response as? NSHTTPURLResponse)?.statusCode where code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
+                responseError = FileProviderWebDavError(code: rCode, url: url)
+            }
             if let data = data {
                 let xresponse = self.parseXMLResponse(data)
                 var fileObjects = [WebDavFileObject]()
@@ -361,10 +359,10 @@ extension WebDAVFileProvider: FileProviderReadWrite {
                     fileObjects.append(fileObject)
                     foundItemHandler?(fileObject)
                 }
-                completionHandler(files: fileObjects, error: error)
+                completionHandler(files: fileObjects, error: responseError ?? error)
                 return
             }
-            completionHandler(files: [], error: error)
+            completionHandler(files: [], error: responseError ?? error)
         }
         task.resume()
     }
@@ -383,6 +381,8 @@ extension WebDAVFileProvider: FileProviderReadWrite {
     // TODO: implements methods for lock mechanism
 }
 
+extension WebDAVFileProvider: FileProvider {}
+
 // MARK: WEBDAV XML response implementation
 
 internal extension WebDAVFileProvider {
@@ -399,16 +399,12 @@ internal extension WebDAVFileProvider {
             let xml = try AEXMLDocument(xmlData: response)
             var rootnode = xml.root
             var responsetag = "response"
-            for node in rootnode.all ?? [] {
-                if node.name.lowercaseString.hasSuffix("multistatus") {
-                    rootnode = node
-                }
+            for node in rootnode.all ?? [] where node.name.lowercaseString.hasSuffix("multistatus") {
+                rootnode = node
             }
-            for node in rootnode.children ?? [] {
-                if node.name.lowercaseString.hasSuffix("response") {
-                    responsetag = node.name
-                    break
-                }
+            for node in rootnode.children ?? [] where node.name.lowercaseString.hasSuffix("response") {
+                responsetag = node.name
+                break
             }
             for responseNode in rootnode[responsetag].all ?? [] {
                 var hreftag = "href"
@@ -434,29 +430,23 @@ internal extension WebDAVFileProvider {
                     }
                     var propDic = [String: String]()
                     let propStatNode = responseNode[propstattag]
-                    for node in propStatNode.children ?? [] {
-                        if node.name.lowercaseString.hasSuffix("status") {
-                            statustag = node.name
-                            break
-                        }
+                    for node in propStatNode.children ?? [] where node.name.lowercaseString.hasSuffix("status"){
+                        statustag = node.name
+                        break
                     }
                     let statusDesc2 = (propStatNode[statustag].stringValue).componentsSeparatedByString(" ")
                     if statusDesc2.count > 2 {
                         status = Int(statusDesc2[1])
                     }
                     var proptag = "prop"
-                    for tnode in propStatNode.children ?? [] {
-                        if tnode.name.lowercaseString.hasSuffix("prop") {
-                            proptag = tnode.name
-                        }
+                    for tnode in propStatNode.children ?? [] where tnode.name.lowercaseString.hasSuffix("prop") {
+                        proptag = tnode.name
                         break
                     }
                     for propItemNode in propStatNode[proptag].children ?? [] {
                         propDic[propItemNode.name.componentsSeparatedByString(":").last!.lowercaseString] = propItemNode.value
-                        if propItemNode.name.hasSuffix("resourcetype") {
-                            if propItemNode.xmlStringCompact.containsString("collection") {
-                                propDic["getcontenttype"] = "httpd/unix-directory"
-                            }
+                        if propItemNode.name.hasSuffix("resourcetype") && propItemNode.xmlString.containsString("collection") {
+                             propDic["getcontenttype"] = "httpd/unix-directory"
                         }
                     }
                     result.append(DavResponse(href: hrefURL, hrefString: href, status: status, prop: propDic))
@@ -474,12 +464,12 @@ internal extension WebDAVFileProvider {
         }
         let name = davResponse.prop["displayname"] ?? (davResponse.hrefString.stringByRemovingPercentEncoding! as NSString).lastPathComponent
         let size = Int64(davResponse.prop["getcontentlength"] ?? "-1") ?? NSURLSessionTransferSizeUnknown
-        let createdDate = self.resolveRFCDate(davResponse.prop["creationdate"] ?? "")
-        let modifiedDate = self.resolveRFCDate(davResponse.prop["getlastmodified"] ?? "")
+        let createdDate = self.resolveDate(davResponse.prop["creationdate"] ?? "")
+        let modifiedDate = self.resolveDate(davResponse.prop["getlastmodified"] ?? "")
         let contentType = davResponse.prop["getcontenttype"] ?? "octet/stream"
         let isDirectory = contentType == "httpd/unix-directory"
         let entryTag = davResponse.prop["getetag"]
-        return WebDavFileObject(absoluteURL: href, name: name, size: size, contentType: contentType, createdDate: createdDate, modifiedDate: modifiedDate, fileType: isDirectory ? .Directory : .Regular, isHidden: false, isReadOnly: false, entryTag: entryTag)
+        return WebDavFileObject(absoluteURL: href, name: name, path: href.path ?? name, size: size, contentType: contentType, createdDate: createdDate, modifiedDate: modifiedDate, fileType: isDirectory ? .Directory : .Regular, isHidden: false, isReadOnly: false, entryTag: entryTag)
     }
     
     private func delegateNotify(operation: FileOperation, error: ErrorType?) {
@@ -542,10 +532,114 @@ extension WebDAVFileProvider: NSURLSessionDataDelegate, NSURLSessionDownloadDele
     }
     
     public func URLSession(session: NSURLSession, task: NSURLSessionTask, didReceiveChallenge challenge: NSURLAuthenticationChallenge, completionHandler: (NSURLSessionAuthChallengeDisposition, NSURLCredential?) -> Void) {
-        completionHandler(NSURLSessionAuthChallengeDisposition.UseCredential, credential)
+        let deposition: NSURLSessionAuthChallengeDisposition = credential != nil ? .UseCredential : .PerformDefaultHandling
+        completionHandler(deposition, credential)
     }
     
     public func URLSession(session: NSURLSession, didReceiveChallenge challenge: NSURLAuthenticationChallenge, completionHandler: (NSURLSessionAuthChallengeDisposition, NSURLCredential?) -> Void) {
-        completionHandler(NSURLSessionAuthChallengeDisposition.UseCredential, credential)
+        let deposition: NSURLSessionAuthChallengeDisposition = credential != nil ? .UseCredential : .PerformDefaultHandling
+        completionHandler(deposition, credential)
+    }
+}
+
+public struct FileProviderWebDavError: ErrorType, CustomStringConvertible {
+    public let code: FileProviderHTTPErrorCode
+    public let url: NSURL
+    
+    public var description: String {
+        return code.description
+    }
+}
+
+public enum FileProviderHTTPErrorCode: Int {
+    case Continue = 100
+    case SwitchingProtocols = 101
+    case Processing = 102
+    case OK = 200
+    case Created = 201
+    case Accepted = 202
+    case NonAuthoritativeInformation = 203
+    case NoContent = 204
+    case ResetContent = 205
+    case PartialContent = 206
+    case MultiStatus = 207
+    case AlreadyReported = 208
+    case IMUsed = 226
+    case MultipleChoices = 300
+    case MovedPermanently = 301
+    case Found = 302
+    case SeeOther = 303
+    case NotModified = 304
+    case UseProxy = 305
+    case SwitchProxy = 306
+    case TemporaryRedirect = 307
+    case PermanentRedirect = 308
+    case BadRequest = 400
+    case Unauthorized = 401
+    case PaymentRequired = 402
+    case Forbidden = 403
+    case NotFound = 404
+    case MethodNotAllowed = 405
+    case NotAcceptable = 406
+    case ProxyAuthenticationRequired = 407
+    case RequestTimeout = 408
+    case Conflict = 409
+    case Gone = 410
+    case LengthRequired = 411
+    case PreconditionFailed = 412
+    case PayloadTooLarge = 413
+    case URITooLong = 414
+    case UnsupportedMediaType = 415
+    case RangeNotSatisfiable = 416
+    case ExpectationFailed = 417
+    case MisdirectedRequest = 421
+    case UnprocessableEntity = 422
+    case Locked = 423
+    case FailedDependency = 424
+    case UnorderedCollection = 425
+    case UpgradeRequired = 426
+    case PreconditionRequired = 428
+    case TooManyRequests = 429
+    case RequestHeaderFieldsTooLarge = 431
+    case UnavailableForLegalReasons = 451
+    case InternalServerError = 500
+    case BadGateway = 502
+    case ServiceUnavailable = 503
+    case GatewayTimeout = 504
+    case HTTPVersionNotSupported = 505
+    case VariantlsoNegotiates = 506
+    case InsufficientStorage = 507
+    case LoopDetected = 508
+    case BandwidthLimitExceeded = 509
+    case NotExtended = 510
+    case NetworkAuthenticationRequired = 511
+    
+    private static let status1xx = [100: "Continue", 101: "Switching Protocols", 102: "Processing"]
+    private static let status2xx = [200: "OK", 201: "Created", 202: "Accepted", 203: "Non-Authoritative Information", 204: "No Content", 205: "Reset Content", 206: "Partial Content", 207: "Multi-Status", 208: "Already Reported", 226: "IM Used"]
+    private static let status3xx = [300: "Multiple Choices", 301: "Moved Permanently", 302: "Found", 303: "See Other", 304: "Not Modified", 305: "Use Proxy", 306: "Switch Proxy", 307: "Temporary Redirect", 308: "Permanent Redirect"]
+    private static let status4xx = [400: "Bad Request", 401: "Unauthorized/Expired Session", 402: "Payment Required", 403: "Forbidden", 404: "Not Found", 405: "Method Not Allowed", 406: "Not Acceptable", 407: "Proxy Authentication Required", 408: "Request Timeout", 409: "Conflict", 410: "Gone", 411: "Length Required", 412: "Precondition Failed", 413: "Payload Too Large", 414: "URI Too Long", 415: "Unsupported Media Type", 416: "Range Not Satisfiable", 417: "Expectation Failed", 421: "Misdirected Request", 422: "Unprocessable Entity", 423: "Locked", 424: "Failed Dependency", 425: "Unordered Collection", 426: "Upgrade Required", 428: "Precondition Required", 429: "Too Many Requests", 431: "Request Header Fields Too Large", 451: "Unavailable For Legal Reasons"]
+    private static let status5xx = [500: "Internal Server Error", 501: "Not Implemented", 502: "Bad Gateway", 503: "Service Unavailable", 504: "Gateway Timeout", 505: "HTTP Version Not Supported", 506: "Variant Also Negotiates", 507: "Insufficient Storage", 508: "Loop Detected", 509: "Bandwidth Limit Exceeded", 510: "Not Extended", 511: "Network Authentication Required"]
+    
+    public var description: String {
+        switch self.rawValue {
+        case 100...102: return FileProviderHTTPErrorCode.status1xx[self.rawValue]!
+        case 200...208, 226: return FileProviderHTTPErrorCode.status2xx[self.rawValue]!
+        case 300...308: return FileProviderHTTPErrorCode.status3xx[self.rawValue]!
+        case 400...417, 421...426: fallthrough
+        case 428, 429, 431, 451: return FileProviderHTTPErrorCode.status4xx[self.rawValue]!
+        case 500...511: return FileProviderHTTPErrorCode.status5xx[self.rawValue]!
+        default: return typeDescription
+        }
+    }
+    
+    public var typeDescription: String {
+        switch self.rawValue {
+        case 100...199: return "Informational"
+        case 200...299: return "Success"
+        case 300...399: return "Redirection"
+        case 400...499: return "Client Error"
+        case 500...599: return "Server Error"
+        default: return "Server Error"
+        }
     }
 }