Multilingual Interface (MUI) Implementation & Language Selector

.gitignore

@@ -10,6 +10,8 @@ Release/
 cppcryptfs/Debug/
 cppcryptfs/Release/
 cppcryptfs/cppcryptfs.aps
+cppcryptfs/res/ru/Resources_RU.aps
+cppcryptfs/res/en/Resources_EN.aps
 Report*.vspx
 Report*.diagsession
 enc_temp_folder/

cppcryptfs/cppcryptfs.cpp

@@ -53,6 +53,7 @@ THE SOFTWARE.
 #include "ui/uiutil.h"
 #include "../libipc/server.h"
 #include "../libipc/client.h"
+#include "ui/locutils.h"
 
 
 #ifdef _DEBUG
@@ -85,6 +86,114 @@ CcppcryptfsApp::CcppcryptfsApp()
 	auto context = get_crypt_context(BLOCK_IV_LEN, AES_MODE_GCM);	
 }
 
+// Callback function for searching language sections in the EXE string block
+BOOL CALLBACK EnumLangsCallback(HMODULE hModule, LPCTSTR lpType, LPCTSTR lpName, WORD wLang, LONG_PTR lParam) {
+    auto* pList = reinterpret_cast<std::vector<LanguageOption>*>(lParam);
+
+	// Exclude duplicates when scanning String Table blocks
+    for (const auto& item : *pList) { 
+        if (item.langID == wLang) return TRUE; 
+    }
+
+    LanguageOption opt;
+    opt.langID = wLang;
+	// Extract language names
+    opt.name = theApp.GetStringForLang(hModule, IDS_LANGUAGE_NAME, wLang);
+
+    if (!opt.name.IsEmpty()) {
+        pList->push_back(opt);
+    }
+    return TRUE;
+}
+
+// Scan EXE resources for translated sections
+void CcppcryptfsApp::ScanResourcesForLanguages() {
+	m_vAvailableLangs.clear();
+	// (IDS_LANGUAGE_NAME >> 4) + 1 - formula for calculating the block number in String Table
+	EnumResourceLanguages(NULL, RT_STRING, MAKEINTRESOURCE((IDS_LANGUAGE_NAME >> 4) + 1),
+		EnumLangsCallback, (LONG_PTR)&m_vAvailableLangs);
+}
+
+// Direct reading of a string from a specific language section (bypassing the current thread locale)
+CString CcppcryptfsApp::GetStringForLang(HMODULE hInst, UINT nID, WORD wLang)
+{
+	HRSRC hRes = ::FindResourceExW(
+		hInst,
+		RT_STRING,
+		MAKEINTRESOURCEW((nID >> 4) + 1),
+		wLang);
+
+	if (!hRes)
+		return CString();
+
+	HGLOBAL hGlobal = ::LoadResource(hInst, hRes);
+	if (!hGlobal)
+		return CString();
+
+	DWORD resourceSizeBytes = ::SizeofResource(hInst, hRes);
+	if (resourceSizeBytes < sizeof(WORD) || (resourceSizeBytes % sizeof(WORD)) != 0)
+		return CString();
+
+	const WORD* pWords = static_cast<const WORD*>(::LockResource(hGlobal));
+	if (!pWords)
+		return CString();
+
+	const size_t wordCount = resourceSizeBytes / sizeof(WORD);
+	size_t pos = 0;
+
+	const int index = nID & 0x000F;
+
+	for (int i = 0; i < index; ++i)
+	{
+		if (pos >= wordCount)
+			return CString();
+
+		const size_t len = pWords[pos];
+		++pos; // skip length word
+
+		if (len > wordCount - pos)
+			return CString();
+
+		pos += len; // skip string data
+	}
+
+	if (pos >= wordCount)
+		return CString();
+
+	const size_t finalLen = pWords[pos];
+	++pos; // move to first character
+
+	if (finalLen == 0)
+		return CString();
+
+	if (finalLen > wordCount - pos)
+		return CString();
+
+	if (finalLen > static_cast<size_t>(INT_MAX))
+		return CString();
+
+	return CString(reinterpret_cast<const WCHAR*>(pWords + pos),
+		static_cast<int>(finalLen));
+}
+
+// Check: does this language exist in the resources (protection against outdated registry entries)
+bool CcppcryptfsApp::IsLanguageAvailable(WORD wLangID) {
+	for (const auto& opt : m_vAvailableLangs) {
+		if (opt.langID == wLangID) return true;
+	}
+	return false;
+}
+
+// Saving user selection to the registry
+void CcppcryptfsApp::SaveLanguageToRegistry(WORD wLangID) {
+	WriteProfileInt(_T("Settings"), _T("LanguageID"), (int)wLangID);
+}
+
+// Reading the selection from the registry (0 - if the entry does not exist)
+WORD CcppcryptfsApp::LoadLanguageFromRegistry() {
+	return (WORD)GetProfileInt(_T("Settings"), _T("LanguageID"), 0);
+}
+
 
 // The one and only CcppcryptfsApp object
 
@@ -119,7 +228,7 @@ static bool StartNamedPipeServer()
 
 
 BOOL CcppcryptfsApp::InitInstance()
-{	 
+{
 
 	const WCHAR *szUniqueNamedMutex = L"cppcryptfs-A7DDB0CF-A856-4E8A-A4E9-722473FB5E49";
 
@@ -186,15 +295,15 @@ BOOL CcppcryptfsApp::InitInstance()
 				ShowWindow(hWnd, SW_SHOWNORMAL);
 			}
 		} else {
-			::MessageBox(NULL, L"cppcryptfs is already running, but window not found!", L"cppcryptfs", MB_OK | MB_ICONERROR);
+			::MessageBox(NULL, LocUtils::GetStringFromResources(IDS_RUN_WINDOW_NOT_FOUND).c_str(), L"cppcryptfs", MB_OK | MB_ICONERROR);
 		}
 
 		return FALSE;
 	} else {
 		wstring mes;
 		bool dokVerCheck = check_dokany_version(mes);
 		if (!dokVerCheck && mes.length() < 1) {
-			mes = L"problem with Dokany version";
+			mes = LocUtils::GetStringFromResources(IDS_PROBLEM_DOKANY_VERSION);
 		}
 		if (mes.length()) {
 			::MessageBox(NULL, mes.c_str(), L"cppcryptfs", MB_OK | (dokVerCheck ? MB_ICONEXCLAMATION :  MB_ICONERROR));
@@ -236,6 +345,17 @@ BOOL CcppcryptfsApp::InitInstance()
 	// such as the name of your company or organization
 	SetRegistryKey(_T("cppcryptfs"));
 
+	ScanResourcesForLanguages();
+	WORD wSavedID = LoadLanguageFromRegistry();
+
+	// Apply the language only if it is found in the EXE (protection against "junk" in the registry)
+	if (wSavedID != 0 && IsLanguageAvailable(wSavedID)) {
+		SetThreadUILanguage(wSavedID);
+		SetThreadLocale(MAKELCID(wSavedID, SORT_DEFAULT));
+	}
+	// for FindResource to work correctly in MFC
+	AfxSetResourceHandle(GetModuleHandle(NULL));
+
 	CCryptPropertySheet dlg(L"cppcryptfs");
 
 	CMountPropertyPage mount;

cppcryptfs/cppcryptfs.h

@@ -43,6 +43,7 @@ THE SOFTWARE.
 #include <string>
 #include <memory>
 #include "crypt/cryptdefs.h"
+#include <vector>
 
 using namespace std;
 
@@ -68,8 +69,27 @@ typedef struct struct_CopyDataCmdLine {
 
 class CMenuTrayIcon;
 
+// Structure for linking the system language ID and its text name
+struct LanguageOption {
+	WORD    langID;
+	CString name;
+};
+
 class CcppcryptfsApp : public CWinApp
 {
+public:
+	// List of all languages found in EXE resources
+	std::vector<LanguageOption> m_vAvailableLangs;
+
+	// Localization management methods
+	void ScanResourcesForLanguages();
+	bool IsLanguageAvailable(WORD wLangID);
+	CString GetStringForLang(HMODULE hInst, UINT nID, WORD wLang);
+
+	// Working with the registry
+	void SaveLanguageToRegistry(WORD wLangID);
+	WORD LoadLanguageFromRegistry();
+
 private:
 	bool m_bIsRunningAsAdministrator = false;
 	bool m_bIsReallyAdministrator = false;
@@ -97,4 +117,4 @@ class CcppcryptfsApp : public CWinApp
 	DECLARE_MESSAGE_MAP()
 };
 
-extern CcppcryptfsApp theApp;
+extern CcppcryptfsApp theApp;

cppcryptfs/cppcryptfs.vcxproj

@@ -117,7 +117,7 @@
     <ResourceCompile>
       <Culture>0x0409</Culture>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(IntDir);$(ProjectDir);$(ProjectDir)res\en;$(ProjectDir)res\ru;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ResourceCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
@@ -148,7 +148,7 @@
     <ResourceCompile>
       <Culture>0x0409</Culture>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(IntDir);$(ProjectDir);$(ProjectDir)res\en;$(ProjectDir)res\ru;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ResourceCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
@@ -181,7 +181,7 @@
     <ResourceCompile>
       <Culture>0x0409</Culture>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(IntDir);$(ProjectDir);$(ProjectDir)res\en;$(ProjectDir)res\ru;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ResourceCompile>
     <PreBuildEvent>
       <Command>for /f %%i in ('git rev-parse --short HEAD') do (echo VALUE "FileDescription", "cppcryptfs build %%i" &gt; "$(ProjectDir)gitversion.rc2")</Command>
@@ -218,7 +218,7 @@
     <ResourceCompile>
       <Culture>0x0409</Culture>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>$(IntDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(IntDir);$(ProjectDir);$(ProjectDir)res\en;$(ProjectDir)res\ru;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ResourceCompile>
     <PreBuildEvent>
       <Command>for /f %%i in ('git rev-parse --short HEAD') do (echo VALUE "FileDescription", "cppcryptfs build %%i" &gt; "$(ProjectDir)gitversion.rc2")</Command>
@@ -227,6 +227,7 @@
   <ItemGroup>
     <ClInclude Include="ui\CryptSetting.h" />
     <ClInclude Include="ui\CryptSettings.h" />
+    <ClInclude Include="ui\locutils.h" />
     <ClInclude Include="ui\MoreSettingsPropertyPage.h" />
     <ClInclude Include="config\cryptconfig.h" />
     <ClInclude Include="context\cryptcontext.h" />
@@ -260,6 +261,10 @@
   <ItemGroup>
     <ClCompile Include="ui\CryptSetting.cpp" />
     <ClCompile Include="ui\CryptSettings.cpp" />
+    <ClCompile Include="ui\locutils.cpp">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotUsing</PrecompiledHeader>
+    </ClCompile>
     <ClCompile Include="ui\MoreSettingsPropertyPage.cpp" />
     <ClCompile Include="cppcryptfs.cpp" />
     <ClCompile Include="dokan\cryptdokan.cpp">
@@ -308,6 +313,18 @@
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="cppcryptfs.rc" />
+    <ResourceCompile Include="res\en\Resources_EN.rc">
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>
+    </ResourceCompile>
+    <ResourceCompile Include="res\ru\Resources_RU.rc">
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>
+    </ResourceCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="res\cppcryptfs.rc2" />
@@ -316,6 +333,16 @@
     <Image Include="res\cppcryptfs.ico" />
     <Image Include="res\drive.ico" />
   </ItemGroup>
+  <ItemGroup>
+    <Text Include="res\lic\aessiv_en.txt" />
+    <Text Include="res\lic\cppcryptfs_en.txt" />
+    <Text Include="res\lic\dokany_lib_en.txt" />
+    <Text Include="res\lic\dokany_mir_en.txt" />
+    <Text Include="res\lic\getopt_en.txt" />
+    <Text Include="res\lic\openssl_en.txt" />
+    <Text Include="res\lic\rapidjson_en.txt" />
+    <Text Include="res\lic\secure_edit_en.txt" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
@@ -324,4 +351,4 @@
       <UserProperties RESOURCE_FILE="cppcryptfs.rc" />
     </VisualStudio>
   </ProjectExtensions>
-</Project>
+</Project>