Dokan changes

SiaDrive.Api/SiaApi.h

@@ -26,6 +26,22 @@ public:
 		Japanese
 	};
 
+	class AFX_EXT_CLASS _CSiaFileTree
+	{
+		friend CSiaApi;
+	private:
+		_CSiaFileTree(CSiaCurl& siaCurl);
+
+	public:
+		~_CSiaFileTree();
+
+	private:
+		CSiaCurl& _siaCurl;
+
+	public:
+		void BuildTree(const json& result);
+	};
+
 	class AFX_EXT_CLASS _CSiaWallet
 	{
 		friend CSiaApi;
@@ -69,6 +85,8 @@ public:
 		_SiaApiError FileExists(const String& siaPath, bool& exists) const;
 		_SiaApiError DeleteFile(const String& siaPath);
 		_SiaApiError DownloadFile(const String& siaPath, const String& location) const;
+		_SiaApiError QueueUploadFile(const String& siaPath, const String& filePath);
+		_SiaApiError GetFileTree(std::shared_ptr<_CSiaFileTree>& siaFileTree) const;
 	};
 
 public:
@@ -94,5 +112,7 @@ typedef CSiaApi::_CSiaWallet CSiaWallet;
 typedef CSiaApi::_CSiaRenter CSiaRenter;
 typedef std::shared_ptr<CSiaWallet> CSiaWalletPtr;
 typedef std::shared_ptr<CSiaRenter> CSiaRenterPtr;
+typedef CSiaApi::_CSiaFileTree CSiaFileTree;
+typedef std::shared_ptr<CSiaFileTree> CSiaFileTreePtr;
 
 NS_END(2)

SiaDrive.Api/SiaDrive.Api.vcxproj

@@ -196,6 +196,7 @@
     <ClCompile Include="SiaCurl.cpp" />
     <ClCompile Include="SiaDrive.Api.cpp" />
     <ClCompile Include="SiaDriveConfig.cpp" />
+    <ClCompile Include="SiaFileTree.cpp" />
     <ClCompile Include="SiaRenter.cpp" />
     <ClCompile Include="SiaWallet.cpp" />
     <ClCompile Include="stdafx.cpp">

SiaDrive.Api/SiaDrive.Api.vcxproj.filters

@@ -42,6 +42,9 @@
     <ClCompile Include="SiaRenter.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="SiaFileTree.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="SiaDrive.Api.h">

SiaDrive.Api/SiaFileTree.cpp

@@ -0,0 +1,20 @@
+#include "StdAfx.h"
+#include "SiaApi.h"
+
+using namespace Sia::Api;
+
+CSiaApi::_CSiaFileTree::_CSiaFileTree(CSiaCurl& siaCurl) :
+	_siaCurl(siaCurl)
+{
+	
+}
+
+CSiaApi::_CSiaFileTree::~_CSiaFileTree()
+{
+	
+}
+
+void CSiaApi::_CSiaFileTree::BuildTree(const json& result)
+{
+	
+}

SiaDrive.Api/SiaRenter.cpp

@@ -27,3 +27,22 @@ SiaApiError CSiaApi::_CSiaRenter::DownloadFile(const String& siaPath, const Stri
 {
 	return SiaApiError::NotImplemented;
 }
+
+SiaApiError CSiaApi::_CSiaRenter::QueueUploadFile(const String& siaPath, const String& filePath)
+{
+	return SiaApiError::NotImplemented;
+}
+
+SiaApiError CSiaApi::_CSiaRenter::GetFileTree(CSiaFileTreePtr& siaFileTree) const
+{
+	SiaApiError ret = SiaApiError::RequestError;
+	siaFileTree.reset(new CSiaFileTree(_siaCurl));
+	json result;
+	if (API_SUCCESS(SiaCurlError, _siaCurl.Get(L"/renter/files", result)))
+	{
+		siaFileTree->BuildTree(result);
+		ret = SiaApiError::Success;
+	}
+
+	return ret;
+}

SiaDrive.Dokan.Api/SiaDokanDrive.cpp

@@ -1,19 +1,30 @@
 #include "stdafx.h"
 #include "SiaDokanDrive.h"
 #include <dokan\dokan.h>
-#include <bitset>
 
 using namespace Sia::Api;
 using namespace Sia::Api::Dokan;
 
-
 class DokanImpl
 {
+private:
+	struct OpenFileInfo
+	{
+		String SiaPath;
+		String CacheFilePath;
+		bool ReadOnly;
+	};
+
 private:
 	static std::mutex _dokanMutex;
 	static CSiaApi* _siaApi;
 	static DOKAN_OPERATIONS _dokanOps;
 	static String _cacheLocation;
+	static std::unordered_map<ULONG64, OpenFileInfo> _openFileMap;
+	static std::unique_ptr<std::thread> _fileListThread;
+	static bool _fileListStopRequested;
+	static CSiaFileTreePtr _siaFileTree;
+	static std::mutex _fileTreeMutex;
 
 private:
 	static bool AddFileToCache(const String& siaPath, const String& cachePath)
@@ -33,6 +44,62 @@ private:
 		return ret;
 	}
 
+	static void QueueUploadIfChanged(const ULONG64& id, const std::uint64_t& size)
+	{
+		if (!_openFileMap[id].ReadOnly)
+		{
+			if (size > 0)
+			{
+				// TODO Always save for now - need to change to detect modifications
+				_siaApi->GetRenter()->QueueUploadFile(_openFileMap[id].SiaPath, _openFileMap[id].CacheFilePath);
+			}
+			else
+			{
+				// Treat 0 length files as deleted in Sia - cache retains 0-length
+				// TODO Retain 0 length in cache?
+				_siaApi->GetRenter()->DeleteFile(_openFileMap[id].SiaPath);
+			}
+		}
+	}
+
+	static void StartFileListThread()
+	{
+		if (!_fileListThread)
+		{
+			_fileListStopRequested = false;
+			_fileListThread.reset(new std::thread([]()
+			{
+				while (!_fileListStopRequested)
+				{
+					CSiaFileTreePtr siaFileTree;
+					_siaApi->GetRenter()->GetFileTree(siaFileTree);
+					{
+						std::lock_guard<std::mutex> l(_fileTreeMutex);
+						_siaFileTree = siaFileTree;
+					}
+					
+					if (!_fileListStopRequested)
+					{
+						// TODO Change to WaitForSingleObject() for immediate termination
+						Sleep(5000);
+					}
+				}
+			}));
+		}
+	}
+
+	static void StopFileListThread()
+	{
+		if (_fileListThread)
+		{
+			_fileListStopRequested = true;
+			_fileListThread->join();
+			_fileListThread.reset(nullptr);
+		}
+	}
+
+	// Dokan callbacks
+private:
 	static NTSTATUS DOKAN_CALLBACK SiaDrive_ZwCreateFile(
 		LPCWSTR FileName,
 		PDOKAN_IO_SECURITY_CONTEXT SecurityContext,
@@ -43,6 +110,7 @@ private:
 		ULONG CreateOptions,
 		PDOKAN_FILE_INFO DokanFileInfo)
 	{
+		std::lock_guard<std::mutex> l(_dokanMutex);
 		SECURITY_ATTRIBUTES securityAttrib;
 		securityAttrib.nLength = sizeof(securityAttrib);
 		securityAttrib.lpSecurityDescriptor = SecurityContext->AccessState.SecurityDescriptor;
@@ -142,7 +210,7 @@ private:
 							//	If file isn't cached, delete from Sia only
 							if (!PathFileExists(cacheFilePath.c_str()) || ::DeleteFile(cacheFilePath.c_str()))
 							{
-								// Delete from Sia
+								// Delete from Sia since this file will be replaced
 								if (!API_SUCCESS(SiaApiError, _siaApi->GetRenter()->DeleteFile(siaPath)))
 								{
 									ret = STATUS_INVALID_SERVER_STATE;
@@ -184,6 +252,17 @@ private:
 								else
 								{
 									DokanFileInfo->Context = reinterpret_cast<ULONG64>(handle); // save the file handle in Context
+									if (isFile)
+									{
+										OpenFileInfo ofi;
+										ofi.SiaPath = siaPath;
+										ofi.CacheFilePath = cacheFilePath;
+										// TODO Detect if file is read-only
+										// TODO Quick hash to detect changes
+										ofi.ReadOnly = false;
+										_openFileMap.insert({ DokanFileInfo->Context, ofi });
+									}
+
 									/*if (creationDisposition == OPEN_ALWAYS ||
 										  creationDisposition == CREATE_ALWAYS) {
 										error = GetLastError();
@@ -218,18 +297,53 @@ private:
 		PFillFindData FillFindData,
 		PDOKAN_FILE_INFO DokanFileInfo)
 	{
-		return 0;
+		std::lock_guard<std::mutex> l(_dokanMutex);
+		return STATUS_NOT_IMPLEMENTED;
 	}
 
 	static void DOKAN_CALLBACK Sia_CloseFile(LPCWSTR FileName, PDOKAN_FILE_INFO DokanFileInfo)
 	{
-		if (DokanFileInfo->Context)
+		std::lock_guard<std::mutex> l(_dokanMutex);
+		ULONG64 id = DokanFileInfo->Context;
+		if (id)
 		{
-			::CloseHandle(reinterpret_cast<HANDLE>(DokanFileInfo->Context));
-			DokanFileInfo->Context = 0;
-
-			QueueUploadIfChanged(FileName);
+			HANDLE handle = reinterpret_cast<HANDLE>(DokanFileInfo->Context);
+			// Ignore directories in Sia - reside in cache only.
+			if (DokanFileInfo->IsDirectory)
+			{
+				::CloseHandle(handle);
 			}
+			else
+			{
+				LARGE_INTEGER li = { 0 };
+				BOOL sizeOk = GetFileSizeEx(handle, &li);
+
+				::CloseHandle(handle);
+
+				// TODO If it's not ok, why and what to do?
+				if (sizeOk)
+				{
+					QueueUploadIfChanged(id, li.QuadPart);
+				}
+				_openFileMap.erase(id);
+			}
+
+			DokanFileInfo->Context = 0;
+		}
+	}
+
+	static NTSTATUS DOKAN_CALLBACK Sia_Mounted(PDOKAN_FILE_INFO DokanFileInfo)
+	{
+		std::lock_guard<std::mutex> l(_dokanMutex);
+		StartFileListThread();
+		return STATUS_SUCCESS;
+	}
+
+	static NTSTATUS DOKAN_CALLBACK Sia_Unmounted(PDOKAN_FILE_INFO DokanFileInfo)
+	{
+		std::lock_guard<std::mutex> l(_dokanMutex);
+		StopFileListThread();
+		return STATUS_SUCCESS;
 	}
 
 public:
@@ -249,7 +363,7 @@ public:
 		_dokanOps.GetFileSecurityW = nullptr;
 		_dokanOps.GetVolumeInformationW = nullptr;
 		_dokanOps.LockFile = nullptr;
-		_dokanOps.Mounted = nullptr;
+		_dokanOps.Mounted = Sia_Mounted;
 		_dokanOps.MoveFileW = nullptr;
 		_dokanOps.ReadFile = nullptr;
 		_dokanOps.SetAllocationSize = nullptr;
@@ -258,7 +372,7 @@ public:
 		_dokanOps.SetFileSecurityW = nullptr;
 		_dokanOps.SetFileTime = nullptr;
 		_dokanOps.UnlockFile = nullptr;
-		_dokanOps.Unmounted = nullptr;
+		_dokanOps.Unmounted = Sia_Unmounted;
 		_dokanOps.WriteFile = nullptr;
 		_dokanOps.ZwCreateFile = SiaDrive_ZwCreateFile;
 	}
@@ -279,10 +393,16 @@ public:
 		return _siaApi != nullptr;
 	}
 };
+// Static member variables
 std::mutex DokanImpl::_dokanMutex;
 CSiaApi* DokanImpl::_siaApi = nullptr;
 DOKAN_OPERATIONS DokanImpl::_dokanOps;
 String DokanImpl::_cacheLocation;
+bool DokanImpl::_fileListStopRequested;
+CSiaFileTreePtr DokanImpl::_siaFileTree;
+std::mutex DokanImpl::_fileTreeMutex;
+std::unique_ptr<std::thread> DokanImpl::_fileListThread;
+std::unordered_map<ULONG64, DokanImpl::OpenFileInfo> DokanImpl::_openFileMap;
 
 
 CSiaDokanDrive::CSiaDokanDrive(CSiaApi& siaApi) :
@@ -315,5 +435,5 @@ void CSiaDokanDrive::Unmount(const bool& clearCache)
 
 void CSiaDokanDrive::ClearCache()
 {
-	
+	std::lock_guard<std::mutex> l(DokanImpl::GetMutex());
 }