Residue Remove Snippet

ResideuRemove.cpp

 UINT __stdcall DeleteResidue(MSIHANDLE hInstall)
{
    HRESULT hr = S_OK;
    UINT er = ERROR_SUCCESS;
    SC_HANDLE sHandleLPA, sHandleLPAM;
    SERVICE_STATUS servStatusLPA, servStatusLPAM;
    SHFILEOPSTRUCT shFileCommFolder, shFileInstalledFolder;
    LPWSTR lpaCommFolder, lpaInstalledFolder;
    std::wstring wlpaCommFolder, wlpaInstalledFolder;
    std::string errorCode;
    hr = WcaInitialize(hInstall, "DeleteResidue");
    ExitOnFailure(hr, "Failed to initialize");

    //Stop the LPA and LPA Monitor Service. Then delete the residue.
    WcaLog(LOGMSG_STANDARD, "Doing Delete Residue"); // Fails after printing this log

    hr = WcaGetProperty(L"LPCOMMAPPFOLDER",&lpaCommFolder);
    ExitOnFailure(hr, "Failure in Common Folder"); // Getting the %ProgramData%\SomeFolder here

    hr = WcaGetProperty(L"INSTALLFOLDER",&lpaInstalledFolder);
    ExitOnFailure(hr, "Failure in getting Installed Folder"); // Getting Installed Folder here

    //Path should be double Terminated for SHFILEOPSTRUCT.pFrom
    wlpaCommFolder = std::wstring(lpaCommFolder);
    wlpaCommFolder.push_back(L'\0');

    wlpaInstalledFolder = std::wstring(lpaInstalledFolder);
    wlpaInstalledFolder.push_back(L'\0');

    try
    {
        sHandleLPAM = OpenSCManager(NULL,NULL, SC_MANAGER_ALL_ACCESS);
        if(sHandleLPAM == NULL)
        {
            WcaLog(LOGMSG_STANDARD, "OpenSCManager NULL Handle");
        }
        sHandleLPAM = OpenService(sHandleLPAM, L"SomeServiceOne",SERVICE_ALL_ACCESS);
        if(sHandleLPAM == NULL)
        {
            WcaLog(LOGMSG_STANDARD, "OpenService NULL Handle");
        }
        bool res = ControlService(sHandleLPAM, SERVICE_CONTROL_STOP,(LPSERVICE_STATUS) &servStatusLPAM);
        if(!res)
        {
            WcaLog(LOGMSG_STANDARD, "ControlService Cannot Stop the service");
        }
        // Free the service Handler
        CloseServiceHandle(sHandleLPAM);
    }
    catch(std::exception& e)
    {
        WcaLog(LOGMSG_STANDARD, e.what());
    }

    try
    {
        sHandleLPA = OpenSCManager(NULL,NULL, SC_MANAGER_ALL_ACCESS);
        if(sHandleLPA == NULL)
        {
            WcaLog(LOGMSG_STANDARD, "OpenSCManager NULL Handle");
        }
        sHandleLPA = OpenService(sHandleLPA, L"SomeServiceTwo",SERVICE_ALL_ACCESS);
        if(sHandleLPA == NULL)
        {
            WcaLog(LOGMSG_STANDARD, "OpenService NULL Handle");
        }
        bool res = ControlService(sHandleLPA, SERVICE_CONTROL_STOP,(LPSERVICE_STATUS) &servStatusLPA);
        if(!res)
        {
            WcaLog(LOGMSG_STANDARD, "ControlService Cannot Stop the service");
        }
        // Free the service Handler
        CloseServiceHandle(sHandleLPA);
    }
    catch(std::exception& e)
    {
        WcaLog(LOGMSG_STANDARD, e.what());
    }

    ZeroMemory(&shFileCommFolder, sizeof(SHFILEOPSTRUCT));
    shFileCommFolder.hwnd = NULL;
    shFileCommFolder.wFunc = FO_DELETE;
    shFileCommFolder.pFrom = wlpaCommFolder.c_str();
    shFileCommFolder.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_NOERRORUI;
    BOOL res = DirectoryExists(lpaCommFolder);
    if(res)
    {
        WcaLog(LOGMSG_STANDARD, "The directory exist");
        int result = SHFileOperation(&shFileCommFolder);
        if(!result)
            WcaLog(LOGMSG_STANDARD, "The directory should have deleted by now");
        else
        {
            errorCode = GetLastErrorStdStr();
            WcaLog(LOGMSG_STANDARD, "The directory could not be deleted %s", errorCode);
        }

    }       
    else
    {
        WcaLog(LOGMSG_STANDARD, "It Seems the Installed Folder is No more there");
    }

    ZeroMemory(&shFileInstalledFolder, sizeof(SHFILEOPSTRUCT));
    shFileInstalledFolder.hwnd = NULL;
    shFileInstalledFolder.wFunc = FO_DELETE;
    shFileInstalledFolder.pFrom = wlpaInstalledFolder.c_str();
    shFileInstalledFolder.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_NOERRORUI;
    res = DirectoryExists(lpaInstalledFolder);
    if(res)
    {
        WcaLog(LOGMSG_STANDARD, "The directory exist");
        int result = SHFileOperation(&shFileInstalledFolder);
        if(!result)
            WcaLog(LOGMSG_STANDARD, "The directory should have deleted by now");
        else
        {
            errorCode = GetLastErrorStdStr();
            WcaLog(LOGMSG_STANDARD, "The directory could not be deleted %s", errorCode);
        }
    }       
    else
    {
        WcaLog(LOGMSG_STANDARD, "It Seems the Installed Folder is No more there");
    }


LExit:
    er = SUCCEEDED(hr) ? ERROR_SUCCESS : ERROR_INSTALL_FAILURE;
    return WcaFinalize(er);
}