Fix icon missing issue due to file system permissions

Fix #2, Close #6

AclHelper.cpp

@@ -0,0 +1,32 @@
+#include "pch.h"
+#include "AclHelper.h"
+
+AclHelper::AclHelper()
+{
+    emptyAcl = (PACL)malloc(sizeof(ACL));
+
+    if (emptyAcl)
+    {
+        InitializeAcl(emptyAcl, sizeof(ACL), ACL_REVISION);
+    }
+}
+
+AclHelper::~AclHelper()
+{
+    if (emptyAcl)
+    {
+        free(emptyAcl);
+    }
+}
+
+DWORD AclHelper::ResetAcl(const wstring& path)
+{
+    if (emptyAcl)
+    {
+        return SetNamedSecurityInfoW(const_cast<LPWSTR>(path.c_str()), SE_FILE_OBJECT, DACL_SECURITY_INFORMATION | UNPROTECTED_DACL_SECURITY_INFORMATION, NULL, NULL, emptyAcl, NULL);
+    }
+    else
+    {
+        return ERROR_OUTOFMEMORY;
+    }
+}

AclHelper.h

@@ -0,0 +1,13 @@
+#pragma once
+
+class AclHelper
+{
+public:
+    AclHelper();
+    ~AclHelper();
+
+    DWORD ResetAcl(const wstring& path);
+
+private:
+    PACL emptyAcl;
+};

EditWithNppExplorerCommandHandler.cpp

@@ -1,17 +1,17 @@
 #include "pch.h"
 #include "EditWithNppExplorerCommandHandler.h"
 
-#include "Helpers.h"
+#include "PathHelper.h"
 
 using namespace NppShell::CommandHandlers;
 using namespace NppShell::Helpers;
 
 const wstring EditWithNppExplorerCommandHandler::GetNppExecutableFullPath()
 {
-    const wstring path = GetInstallationPath();
+    const wstring path = GetApplicationPath();
     const wstring fileName = L"\\notepad++.exe";
 
-    return L"\"" + path + fileName + L"\"";
+    return path + fileName;
 }
 
 const wstring EditWithNppExplorerCommandHandler::Title()
@@ -26,12 +26,12 @@ const wstring EditWithNppExplorerCommandHandler::Icon()
     return fileName;
 }
 
-const wstring EditWithNppExplorerCommandHandler::GetCommandLine()
+const wstring EditWithNppExplorerCommandHandler::GetCommandLine(const wstring& itemName)
 {
     const wstring fileName = GetNppExecutableFullPath();
-    const wstring parameters = L"\"%1\"";
+    const wstring parameters = L"\"" + itemName + L"\"";
 
-    return fileName + L" " + parameters;
+    return L"\"" + fileName + L"\" " + parameters;
 }
 
 IFACEMETHODIMP EditWithNppExplorerCommandHandler::Invoke(IShellItemArray* psiItemArray, IBindCtx* pbc) noexcept try
@@ -54,8 +54,8 @@ IFACEMETHODIMP EditWithNppExplorerCommandHandler::Invoke(IShellItemArray* psiIte
         psiItemArray->GetItemAt(i, &psi);
         RETURN_IF_FAILED(psi->GetDisplayName(SIGDN_FILESYSPATH, &itemName));
 
-        std::wstring cmdline = this->GetCommandLine();
-        cmdline = cmdline.replace(cmdline.find(L"%1"), 2, itemName);
+        const wstring applicationName = GetNppExecutableFullPath();
+        const wstring commandLine = GetCommandLine(itemName);
 
         STARTUPINFO si;
         PROCESS_INFORMATION pi;
@@ -64,9 +64,10 @@ IFACEMETHODIMP EditWithNppExplorerCommandHandler::Invoke(IShellItemArray* psiIte
         si.cb = sizeof(si);
         ZeroMemory(&pi, sizeof(pi));
 
-        wchar_t* command = (LPWSTR)cmdline.c_str();
+        wchar_t* application = (LPWSTR)applicationName.c_str();
+        wchar_t* command = (LPWSTR)commandLine.c_str();
 
-        if (!CreateProcess(nullptr, command, nullptr, nullptr, false, CREATE_NEW_PROCESS_GROUP, nullptr, nullptr, &si, &pi))
+        if (!CreateProcessW(application, command, nullptr, nullptr, false, CREATE_NEW_PROCESS_GROUP, nullptr, nullptr, &si, &pi))
         {
             return S_OK;
         }

EditWithNppExplorerCommandHandler.h

@@ -19,6 +19,6 @@ namespace NppShell::CommandHandlers
 
     private:
         const wstring GetNppExecutableFullPath();
-        const wstring GetCommandLine();
+        const wstring GetCommandLine(const wstring& itemName);
     };
 }

Installer.cpp

@@ -2,6 +2,8 @@
 #include "Installer.h"
 
 #include "EditWithNppExplorerCommandHandler.h"
+#include "PathHelper.h"
+#include "AclHelper.h"
 
 #define GUID_STRING_SIZE 40
 
@@ -126,7 +128,7 @@ LRESULT CreateRegistryKey(const HKEY hive, const wstring& key, const wstring& na
     return lResult;
 }
 
-LRESULT CleanupRegistry(const wstring guid)
+LRESULT CleanupRegistry(const wstring& guid)
 {
     constexpr int bufferSize = MAX_PATH + GUID_STRING_SIZE;
     WCHAR buffer[bufferSize];
@@ -233,12 +235,24 @@ HRESULT MoveFileToTempAndScheduleDeletion(const wstring& filePath)
     return S_OK;
 }
 
+HRESULT ResetAclPermissionsOnApplicationFolder()
+{
+    // First we get the path where Notepad++ is installed.
+    const wstring applicationPath = GetApplicationPath();
+
+    // Create a new AclHelper
+    AclHelper aclHelper;
+
+    // Reset the ACL of the folder where Notepad++ is installed.
+    aclHelper.ResetAcl(applicationPath);
+}
+
 HRESULT NppShell::Installer::RegisterSparsePackage()
 {
     PackageManager packageManager;
     AddPackageOptions options;
 
-    const wstring externalLocation = GetInstallationPath();
+    const wstring externalLocation = GetContextMenuPath();
     const wstring sparsePkgPath = externalLocation + L"\\NppShell.msix";
 
     Uri externalUri(externalLocation);
@@ -290,12 +304,15 @@ HRESULT NppShell::Installer::UnregisterSparsePackage()
         break;
     }
 
+    // After unregistering the sparse package, we reset the folder permissions of the folder where we are installed.
+    ResetAclPermissionsOnApplicationFolder();
+
     return S_OK;
 }
 
 HRESULT NppShell::Installer::RegisterOldContextMenu()
 {
-    const wstring installationPath = GetInstallationPath();
+    const wstring installationPath = GetContextMenuPath();
     const wstring guid = GetCLSIDString();
 
     CreateRegistryKey(HKEY_LOCAL_MACHINE, ShellKey, L"ExplorerCommandHandler", guid.c_str());
@@ -340,9 +357,11 @@ HRESULT NppShell::Installer::Install()
         result = RegisterOldContextMenu();
     }
 
-    // Ensure NppModernShell files have been moved away.
-    MoveFileToTempAndScheduleDeletion(GetInstallationPath() + L"\\NppModernShell.dll");
-    MoveFileToTempAndScheduleDeletion(GetInstallationPath() + L"\\NppModernShell.msix");
+    // Ensure NppModernShell and NppShell files have been moved away from the main program directory.
+    MoveFileToTempAndScheduleDeletion(GetApplicationPath() + L"\\NppShell.dll");
+    MoveFileToTempAndScheduleDeletion(GetApplicationPath() + L"\\NppShell.msix");
+    MoveFileToTempAndScheduleDeletion(GetApplicationPath() + L"\\NppModernShell.dll");
+    MoveFileToTempAndScheduleDeletion(GetApplicationPath() + L"\\NppModernShell.msix");
 
     SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, 0, 0);
 

Installer.h

@@ -1,8 +1,6 @@
 #pragma once
 #include "pch.h"
 
-#include "Helpers.h"
-
 namespace NppShell::Installer
 {
     HRESULT RegisterOldContextMenu();
@@ -13,6 +11,6 @@ namespace NppShell::Installer
 
     HRESULT Install();
     HRESULT Uninstall();
+}
 
-    STDAPI CleanupDll();
-}
+STDAPI CleanupDll();

NppShell.vcxproj

@@ -255,19 +255,21 @@
     </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClInclude Include="AclHelper.h" />
     <ClInclude Include="EditWithNppExplorerCommandHandler.h" />
     <ClInclude Include="ExplorerCommandBase.h" />
     <ClInclude Include="framework.h" />
-    <ClInclude Include="Helpers.h" />
+    <ClInclude Include="PathHelper.h" />
     <ClInclude Include="Installer.h" />
     <ClInclude Include="pch.h" />
     <ClInclude Include="SimpleFactory.h" />
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="AclHelper.cpp" />
     <ClCompile Include="dllmain.cpp" />
     <ClCompile Include="EditWithNppExplorerCommandHandler.cpp" />
     <ClCompile Include="ExplorerCommandBase.cpp" />
-    <ClCompile Include="Helpers.cpp" />
+    <ClCompile Include="PathHelper.cpp" />
     <ClCompile Include="Installer.cpp" />
     <ClCompile Include="pch.cpp">
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Create</PrecompiledHeader>

NppShell.vcxproj.filters

@@ -10,6 +10,9 @@
     <Filter Include="Factories">
       <UniqueIdentifier>{a0f353df-9c6f-4612-a2d1-98aa7a6d6893}</UniqueIdentifier>
     </Filter>
+    <Filter Include="Helpers">
+      <UniqueIdentifier>{9c186a78-bd74-4ac7-b560-e61aeb6d2350}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="EditWithNppExplorerCommandHandler.h">
@@ -22,11 +25,16 @@
       <Filter>Installer</Filter>
     </ClInclude>
     <ClInclude Include="pch.h" />
-    <ClInclude Include="Helpers.h" />
     <ClInclude Include="framework.h" />
     <ClInclude Include="SimpleFactory.h">
       <Filter>Factories</Filter>
     </ClInclude>
+    <ClInclude Include="PathHelper.h">
+      <Filter>Helpers</Filter>
+    </ClInclude>
+    <ClInclude Include="AclHelper.h">
+      <Filter>Helpers</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="EditWithNppExplorerCommandHandler.cpp">
@@ -39,8 +47,13 @@
       <Filter>Installer</Filter>
     </ClCompile>
     <ClCompile Include="dllmain.cpp" />
-    <ClCompile Include="Helpers.cpp" />
     <ClCompile Include="pch.cpp" />
+    <ClCompile Include="PathHelper.cpp">
+      <Filter>Helpers</Filter>
+    </ClCompile>
+    <ClCompile Include="AclHelper.cpp">
+      <Filter>Helpers</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />

PathHelper.cpp

@@ -0,0 +1,26 @@
+#include "pch.h"
+#include "PathHelper.h"
+
+using namespace NppShell::Helpers;
+using namespace std::filesystem;
+
+extern HMODULE thisModule;
+
+const path GetThisModulePath()
+{
+    wchar_t pathBuffer[FILENAME_MAX] = { 0 };
+    GetModuleFileName(thisModule, pathBuffer, FILENAME_MAX);
+    return path(pathBuffer);
+}
+
+const wstring NppShell::Helpers::GetApplicationPath()
+{
+    path modulePath = GetThisModulePath();
+    return modulePath.parent_path().parent_path().wstring();
+}
+
+const wstring NppShell::Helpers::GetContextMenuPath()
+{
+    path modulePath = GetThisModulePath();
+    return modulePath.parent_path().wstring();
+}

Helpers.h → PathHelper.h

@@ -5,5 +5,6 @@
 
 namespace NppShell::Helpers
 {
-    const wstring GetInstallationPath();
+    const wstring GetApplicationPath();
+    const wstring GetContextMenuPath();
 }

README.md

@@ -54,15 +54,15 @@ They need to be there, since the DLL is looking for notepad++.exe in the same di
 ## The installer should, upon installation, install the package.
 When the installer is running, after all the files has been copied into the program files directory, the follow command should be be run to run the register function to register the package:
 ```
-regsvr32.exe /s .\NppShell.dll
+regsvr32.exe /s .\contextmenu\NppShell.dll
 ```
 
 Remember to wait for the regsvr32 process to exit before continuing.
 
 ## The installer should, upon uninstallation, uninstall the package.
 When the uninstaller is running, it should run this command to unregister the package:
 ```
-regsvr32.exe /s /u .\NppShell.dll
+regsvr32.exe /s /u .\contextmenu\NppShell.dll
 ```
 
 Here we need to wait for regsvr32 to finish, since if it isn't finished, the dll file will be locked by explorer.

framework.h

@@ -4,7 +4,7 @@
 #define WIN32_LEAN_AND_MEAN             // Exclude rarely-used stuff from Windows headers
 // Windows Header Files
 #include <windows.h>
-#include <pathcch.h>
+#include <aclapi.h>
 #include <shlwapi.h>
 #include <shlobj.h>
 #include <shobjidl_core.h>
@@ -22,5 +22,4 @@
 
 // Link libraries
 #pragma comment(lib, "shlwapi.lib")
-#pragma comment(lib, "runtimeobject.lib")
-#pragma comment(lib, "pathcch.lib")
+#pragma comment(lib, "runtimeobject.lib")