Move UI.wixext into ext

9 files changed, 816 insertions, 0 deletions

diff --git a/src/ext/UI/ca/CustomMsiErrors.h b/src/ext/UI/ca/CustomMsiErrors.h
new file mode 100644
index 00000000..b568d01c
--- /dev/null
+++ b/src/ext/UI/ca/CustomMsiErrors.h
@@ -0,0 +1,10 @@
+#pragma once
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+#define msierrSQLFailedCreateDatabase          26201
+#define msierrSQLFailedDropDatabase            26202
+#define msierrSQLFailedConnectDatabase         26203
+#define msierrSQLFailedExecString              26204
+#define msierrSQLDatabaseAlreadyExists         26205
+
+//Last available is 26250
\ No newline at end of file
diff --git a/src/ext/UI/ca/DriveCheck.cpp b/src/ext/UI/ca/DriveCheck.cpp
new file mode 100644
index 00000000..fafd73c2
--- /dev/null
+++ b/src/ext/UI/ca/DriveCheck.cpp
@@ -0,0 +1,126 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+#include "precomp.h"
+
+static HRESULT PathIsRemote(__in LPCWSTR pTargetFolder, __inout BOOL* fPathRemote);
+static HRESULT PathIsRemovable(__in LPCWSTR pTargetFolder, __inout BOOL* fPathRemovable);
+
+/********************************************************************
+ ValidatePath - Custom Action entry point
+
+********************************************************************/
+UINT __stdcall ValidatePath(MSIHANDLE hInstall)
+{
+    HRESULT hr = S_OK;
+    
+    LPWSTR pwszWixUIDir = NULL;
+    LPWSTR pwszInstallPath = NULL;
+    BOOL fInstallPathIsRemote = TRUE;
+    BOOL fInstallPathIsRemoveable = TRUE;
+    
+    hr = WcaInitialize(hInstall, "ValidatePath");
+    ExitOnFailure(hr, "failed to initialize");
+
+    hr = WcaGetProperty(L"WIXUI_INSTALLDIR", &pwszWixUIDir);
+    ExitOnFailure(hr, "failed to get WixUI Installation Directory");
+    
+    hr = WcaGetProperty(pwszWixUIDir, &pwszInstallPath);
+    ExitOnFailure(hr, "failed to get Installation Directory");
+    
+    hr = PathIsRemote(pwszInstallPath, &fInstallPathIsRemote);
+    if (FAILED(hr))
+    {
+        TraceError(hr, "Unable to determine if path is remote");
+        //reset HR, as we need to continue and find out if is a UNC path
+        hr = S_OK;
+    }
+    
+    hr = PathIsRemovable(pwszInstallPath, &fInstallPathIsRemoveable);
+    if (FAILED(hr))
+    {
+        TraceError(hr, "Unable to determine if path is removable");
+        //reset HR, as we need to continue and find out if is a UNC path
+        hr = S_OK;
+    }
+
+    // If the path does not point to a network drive, mapped drive, or removable drive,
+    // then set WIXUI_INSTALLDIR_VALID to "1" otherwise set it to 0
+    BOOL fInstallPathIsUnc = PathIsUNCW(pwszInstallPath);
+    if (!fInstallPathIsUnc && !fInstallPathIsRemote && !fInstallPathIsRemoveable)
+    {
+        // path is valid
+        hr = WcaSetProperty(L"WIXUI_INSTALLDIR_VALID",  L"1");
+        ExitOnFailure(hr, "failed to set WIXUI_INSTALLDIR_VALID");
+    }
+    else
+    {
+        // path is invalid; we can't log it because we're being called from a DoAction control event
+        // but we can at least call WcaLog to get it to write to the debugger from a debug build
+        WcaLog(LOGMSG_STANDARD, "Installation path %ls is invalid: it is %s UNC path, %s remote path, or %s path on a removable drive, and must be none of these.",
+            pwszInstallPath, fInstallPathIsUnc ? "a" : "not a", fInstallPathIsRemote ? "a" : "not a", fInstallPathIsRemoveable ? "a" : "not a");
+        hr = WcaSetProperty(L"WIXUI_INSTALLDIR_VALID",  L"0");
+        ExitOnFailure(hr, "failed to set WIXUI_INSTALLDIR_VALID");
+    }
+    
+LExit:
+    ReleaseStr(pwszInstallPath);
+    ReleaseStr(pwszWixUIDir);
+
+    return WcaFinalize(SUCCEEDED(hr) ? ERROR_SUCCESS : ERROR_INSTALL_FAILURE);
+}
+
+/********************************************************************
+ PathIsRemote - helper function for ValidatePath
+
+********************************************************************/
+static HRESULT PathIsRemote(__in LPCWSTR pTargetFolder, __inout BOOL* fPathRemote)
+{
+    HRESULT hr = S_OK;
+    LPWSTR pStrippedTargetFolder = NULL;
+
+    hr = StrAllocString(&pStrippedTargetFolder, pTargetFolder, 0);
+    
+    // Terminate the path at the root
+    if(!::PathStripToRootW(pStrippedTargetFolder))
+    {
+        hr = HRESULT_FROM_WIN32(ERROR_INVALID_DRIVE);
+        ExitOnFailure(hr, "failed to parse target folder");    
+    }
+    
+    UINT uResult = GetDriveTypeW(pStrippedTargetFolder);
+    
+    *fPathRemote = (DRIVE_REMOTE == uResult) ;
+
+LExit:
+    ReleaseStr(pStrippedTargetFolder);
+
+    return hr;        
+}
+
+/********************************************************************
+ PathIsRemovable - helper function for ValidatePath
+
+********************************************************************/
+static HRESULT PathIsRemovable(__in LPCWSTR pTargetFolder, __inout BOOL* fPathRemovable)
+{
+    HRESULT hr = S_OK;
+    LPWSTR pStrippedTargetFolder = NULL;
+
+    hr = StrAllocString(&pStrippedTargetFolder, pTargetFolder, 0);
+    
+    // Terminate the path at the root
+    if(!::PathStripToRootW(pStrippedTargetFolder))
+    {
+        hr = HRESULT_FROM_WIN32(ERROR_INVALID_DRIVE);
+        ExitOnFailure(hr, "failed to parse target folder");    
+    }
+    
+    UINT uResult = GetDriveTypeW(pStrippedTargetFolder);
+    
+    *fPathRemovable = ((DRIVE_CDROM == uResult) || (DRIVE_REMOVABLE == uResult) || (DRIVE_RAMDISK == uResult) || (DRIVE_UNKNOWN == uResult));
+
+LExit:
+    ReleaseStr(pStrippedTargetFolder);
+
+    return hr;
+}
diff --git a/src/ext/UI/ca/PrintEula.cpp b/src/ext/UI/ca/PrintEula.cpp
new file mode 100644
index 00000000..b19de9a6
--- /dev/null
+++ b/src/ext/UI/ca/PrintEula.cpp
@@ -0,0 +1,556 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+#include "precomp.h"
+
+// Constants
+LPCWSTR vcsEulaQuery = L"SELECT `Text` FROM `Control` WHERE `Control`='LicenseText'";
+
+
+enum eEulaQuery { eqText = 1};
+const int IDM_POPULATE = 100;
+const int IDM_PRINT = 101;
+const int CONTROL_X_COORDINATE = 0;
+const int CONTROL_Y_COORDINATE = 0;
+const int CONTROL_WIDTH = 500;
+const int CONTROL_HEIGHT = 500;
+const int ONE_INCH = 1440; // 1440 TWIPS = 1 inch.
+const int TEXT_RECORD_POS = 1;
+const int STRING_CAPACITY = 512;
+const int NO_OF_COPIES = 1;
+const LPWSTR WINDOW_CLASS = L"PrintEulaRichText";
+
+//Forward declarations of functions, check the function definitions for the comments
+static LRESULT CALLBACK WndProc(__in HWND hWnd, __in UINT message, __in WPARAM wParam, __in LPARAM lParam);
+static HRESULT ReadEulaText(__in MSIHANDLE hInstall, __out LPSTR* ppszEulaText);
+static DWORD CALLBACK ReadStreamCallback(__in DWORD Cookie, __out LPBYTE pbBuff, __in LONG cb, __out LONG FAR *pcb);
+static HRESULT CreateRichTextWindow(__out HWND* phWndMain, __out BOOL* pfRegisteredClass);
+static HRESULT PrintRichText(__in HWND hWndMain);
+static void Print(__in_opt HWND hWnd);
+static void LoadEulaText(__in_opt HWND hWnd);
+static void ShowErrorMessage(__in HRESULT hr);
+
+//Global variables
+PRINTDLGEXW* vpPrintDlg = NULL; //Parameters for print (needed on both sides of WndProc callbacks)
+LPSTR vpszEulaText = NULL;
+LPCWSTR vwzRichEditClass = NULL;
+HRESULT vhr = S_OK; //Global hr, used by the functions called from WndProc to set errorcode
+
+
+/********************************************************************
+ PrintEula - Custom Action entry point
+
+********************************************************************/
+extern "C" UINT __stdcall PrintEula(MSIHANDLE hInstall)
+{
+    //AssertSz(FALSE, "Debug PrintEula");
+
+    HRESULT hr = S_OK;
+    HWND hWndMain = NULL;
+    HMODULE hRichEdit = NULL;
+    BOOL fRegisteredClass = FALSE;
+
+    hr = WcaInitialize(hInstall, "PrintEula");
+    ExitOnFailure(hr, "failed to initialize");
+
+    // Initialize then display print dialog.
+    vpPrintDlg = (PRINTDLGEXW*)GlobalAlloc(GPTR, sizeof(PRINTDLGEXW)); // MSDN says to allocate on heap.
+    ExitOnNullWithLastError(vpPrintDlg, hr, "Failed to allocate memory for print dialog struct.");
+
+    vpPrintDlg->lStructSize = sizeof(PRINTDLGEX);
+    vpPrintDlg->hwndOwner = ::FindWindowW(L"MsiDialogCloseClass", NULL);
+    vpPrintDlg->Flags = PD_RETURNDC | PD_COLLATE | PD_NOCURRENTPAGE | PD_ALLPAGES | PD_NOPAGENUMS | PD_NOSELECTION;
+    vpPrintDlg->nCopies = NO_OF_COPIES;
+    vpPrintDlg->nStartPage = START_PAGE_GENERAL;
+
+    hr = ::PrintDlgExW(vpPrintDlg);
+    ExitOnFailure(hr, "Failed to show print dialog");
+
+    // If user said they want to print.
+    if (PD_RESULT_PRINT == vpPrintDlg->dwResultAction)
+    {
+        // Get the stream for Eula
+        hr = ReadEulaText(hInstall, &vpszEulaText);
+        ExitOnFailure(hr, "failed to read Eula text from MSI database");
+
+        // Have to load Rich Edit since we'll be creating a Rich Edit control in the window
+        hr = LoadSystemLibrary(L"Msftedit.dll", &hRichEdit);
+        if (SUCCEEDED(hr))
+        {
+            vwzRichEditClass = MSFTEDIT_CLASS;
+        }
+        else
+        {
+            hr = LoadSystemLibrary(L"Riched20.dll", &hRichEdit);
+            ExitOnFailure(hr, "failed to load rich edit 2.0 library");
+
+            vwzRichEditClass = RICHEDIT_CLASSW;
+        }
+
+        hr = CreateRichTextWindow(&hWndMain, &fRegisteredClass);
+        ExitOnFailure(hr, "failed to create rich text window for printing");
+
+        hr = PrintRichText(hWndMain);
+        if (FAILED(hr)) // Since we've already shown the print dialog, we better show them a dialog explaining why it didn't print
+        {
+            ShowErrorMessage(hr);
+        }
+    }
+
+LExit:
+    ReleaseNullStr(vpszEulaText);
+    if (vpPrintDlg)
+    {
+        if (vpPrintDlg->hDevMode)
+        {
+            ::GlobalFree(vpPrintDlg->hDevMode);
+        }
+
+        if (vpPrintDlg->hDevNames)
+        {
+            ::GlobalFree(vpPrintDlg->hDevNames);
+        }
+
+        if (vpPrintDlg->hDC)
+        {
+            ::DeleteDC(vpPrintDlg->hDC);
+        }
+
+        ::GlobalFree(vpPrintDlg);
+        vpPrintDlg = NULL;
+    }
+
+    if (fRegisteredClass)
+    {
+        ::UnregisterClassW(WINDOW_CLASS, NULL);
+    }
+
+    vwzRichEditClass = NULL;
+    if (NULL != hRichEdit)
+    {
+        ::FreeLibrary(hRichEdit);
+    }
+
+    // Always return success since we dont want to stop the
+    // installation even if the Eula printing fails.
+    return WcaFinalize(ERROR_SUCCESS);
+}
+
+
+
+/********************************************************************
+CreateRichTextWindow - Creates Window and Child RichText control.
+
+********************************************************************/
+HRESULT CreateRichTextWindow(
+    __out HWND* phWndMain,
+    __out BOOL* pfRegisteredClass
+    )
+{
+    HRESULT hr = S_OK;
+    HWND hWndMain = NULL;
+    WNDCLASSEXW wcex;
+
+    //
+    // Register the window class
+    //
+    wcex.cbSize = sizeof(WNDCLASSEXW);
+    wcex.style = CS_HREDRAW | CS_VREDRAW;
+    wcex.lpfnWndProc = (WNDPROC)WndProc;
+    wcex.cbClsExtra = 0;
+    wcex.cbWndExtra = 0;
+    wcex.hInstance = NULL;
+    wcex.hIcon = NULL;
+    wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
+    wcex.hbrBackground = (HBRUSH)(COLOR_BACKGROUND+1);
+    wcex.lpszMenuName = NULL;
+    wcex.lpszClassName = WINDOW_CLASS;
+    wcex.hIconSm = NULL;
+
+    if (0 == ::RegisterClassExW(&wcex))
+    {
+        DWORD  dwResult = ::GetLastError();
+
+        // If we get "Class already exists" error ignore it. We might
+        // encounter this when the user tries to print more than once
+        // in the same setup instance and we are unable to clean up fully.
+        if (dwResult != ERROR_CLASS_ALREADY_EXISTS)
+        {
+            ExitOnFailure(hr = HRESULT_FROM_WIN32(dwResult), "failed to register window class");
+        }
+    }
+
+    *pfRegisteredClass = TRUE;
+
+    // Perform application initialization:
+    hWndMain = ::CreateWindowW(WINDOW_CLASS, NULL, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, NULL, NULL);
+    ExitOnNullWithLastError(hWndMain, hr, "failed to create window for printing");
+
+    ::ShowWindow(hWndMain, SW_HIDE);
+    if (!::UpdateWindow(hWndMain))
+    {
+        ExitWithLastError(hr, "failed to update window");
+    }
+
+    *phWndMain = hWndMain;
+
+LExit:
+    return hr;
+}
+
+
+/********************************************************************
+ PrintRichText - Sends messages to load the Eula text, print it, and
+ close the window.
+
+ NOTE: Returns errors that have occured while attempting to print,
+ which were saved in vhr by the print callbacks.
+********************************************************************/
+HRESULT PrintRichText(
+    __in HWND hWndMain
+    )
+{
+    MSG msg;
+
+    // Populate the RichEdit control
+    ::SendMessageW(hWndMain, WM_COMMAND, IDM_POPULATE, 0);
+
+    // Print Eula
+    ::SendMessageW(hWndMain, WM_COMMAND, IDM_PRINT, 0);
+
+    // Done! Lets close the Window
+    ::SendMessage(hWndMain, WM_CLOSE, 0, 0);
+    // Main message loop:
+    while (::GetMessageW(&msg, NULL, 0, 0))
+    {
+//        if (!::TranslateAcceleratorW(msg.hwnd, NULL, &msg))
+//        {
+//            ::TranslateMessage(&msg);
+//            ::DispatchMessageW(&msg);
+//        }
+    }
+
+
+    // return any errors encountered in the print callbacks
+    return vhr;
+}
+
+
+/********************************************************************
+ WndProc - Windows callback procedure
+
+********************************************************************/
+LRESULT CALLBACK WndProc(
+    __in HWND hWnd,
+    __in UINT message,
+    __in WPARAM wParam,
+    __in LPARAM lParam
+    )
+{
+    static HWND hWndRichEdit = NULL;
+    int wmId, wmEvent;
+    PAINTSTRUCT ps;
+    HDC hdc;
+
+    switch (message)
+    {
+    case WM_CREATE:
+        hWndRichEdit = ::CreateWindowExW(WS_EX_CLIENTEDGE, vwzRichEditClass, L"", ES_MULTILINE | WS_CHILD | WS_VISIBLE | WS_VSCROLL, CONTROL_X_COORDINATE, CONTROL_Y_COORDINATE, CONTROL_WIDTH, CONTROL_HEIGHT, hWnd, NULL, NULL, NULL);
+        break;
+    case WM_COMMAND:
+        wmId = LOWORD(wParam);
+        wmEvent = HIWORD(wParam);
+        switch (wmId)
+        {
+        case IDM_POPULATE:
+            LoadEulaText(hWndRichEdit);
+            break;
+        case IDM_PRINT:
+            Print(hWndRichEdit);
+            break;
+        default:
+            return ::DefWindowProcW(hWnd, message, wParam, lParam);
+            break;
+        }
+        break;
+    case WM_PAINT:
+        hdc = ::BeginPaint(hWnd, &ps);
+        ::EndPaint(hWnd, &ps);
+        break;
+    case WM_DESTROY:
+        ::PostQuitMessage(0);
+        break;
+    default:
+        return ::DefWindowProcW(hWnd, message, wParam, lParam);
+    }
+
+    return 0;
+}
+
+
+/********************************************************************
+ ReadStreamCallback - Callback function to read data to the RichText control
+
+ NOTE: Richtext control uses this function to read data from the buffer
+********************************************************************/
+DWORD CALLBACK ReadStreamCallback(
+    __in DWORD /*Cookie*/,
+    __out LPBYTE pbBuff,
+    __in LONG cb,
+    __out LONG FAR *pcb
+    )
+{
+    static LPCSTR pszTextBuf = NULL;
+    DWORD er = ERROR_SUCCESS;
+
+    // If it's null set it to the beginning of the EULA buffer
+    if (pszTextBuf == NULL)
+    {
+        pszTextBuf = vpszEulaText;
+    }
+
+    LONG lTextLength = (LONG)lstrlen(pszTextBuf);
+
+    if (cb < 0)
+    {
+        *pcb = 0;
+        er = 1;
+    }
+    else if (lTextLength < cb ) // If the size to be written is less than then length of the buffer, write the rest
+    {
+        *pcb = lTextLength;
+        memcpy(pbBuff, pszTextBuf, *pcb);
+        pszTextBuf = NULL;
+    }
+    else // Only write the amount being asked for and move the pointer along
+    {
+        *pcb = cb;
+        memcpy(pbBuff, pszTextBuf, *pcb);
+        pszTextBuf = pszTextBuf +  cb;
+    }
+
+    return er;
+}
+
+
+/********************************************************************
+ LoadEulaText - Reads data for Richedit control
+
+********************************************************************/
+void LoadEulaText(
+    __in HWND hWnd
+    )
+{
+    HRESULT hr = S_OK;
+
+    ExitOnNull(hWnd, hr, ERROR_INVALID_HANDLE, "Invalid Handle passed to LoadEulaText");
+
+    // Docs say this doesn't return any value
+    ::SendMessageW(hWnd, EM_LIMITTEXT, static_cast<WPARAM>(lstrlen(vpszEulaText)), 0);
+
+    EDITSTREAM es;
+    ::ZeroMemory(&es, sizeof(es));
+    es.pfnCallback = (EDITSTREAMCALLBACK)ReadStreamCallback;
+    es.dwCookie = (DWORD)0;
+    ::SendMessageW(hWnd, EM_STREAMIN, SF_RTF, (LPARAM)&es);
+
+    if (0 != es.dwError)
+    {
+        ExitOnLastError(hr, "failed to load the EULA into the control");
+    }
+
+LExit:
+    vhr = hr;
+}
+
+
+/********************************************************************
+ ReadEulaText - Reads Eula text from the MSI
+
+********************************************************************/
+HRESULT ReadEulaText(
+    __in MSIHANDLE /*hInstall*/,
+    __out LPSTR* ppszEulaText
+    )
+{
+    HRESULT hr = S_OK;
+    PMSIHANDLE hDB;
+    PMSIHANDLE hView;
+    PMSIHANDLE hRec;
+    LPWSTR pwzEula = NULL;
+
+    hr = WcaOpenExecuteView(vcsEulaQuery, &hView);
+    ExitOnFailure(hr, "failed to open and execute view for PrintEula query");
+
+    hr = WcaFetchSingleRecord(hView, &hRec);
+    ExitOnFailure(hr, "failed to fetch the row containing the LicenseText");
+
+    hr = WcaGetRecordString(hRec, 1, &pwzEula);
+    ExitOnFailure(hr, "failed to get LicenseText in PrintEula");
+
+    hr = StrAnsiAllocString(ppszEulaText, pwzEula, 0, CP_ACP);
+    ExitOnFailure(hr, "failed to convert LicenseText to ANSI code page");
+
+LExit:
+    return hr;
+}
+
+
+/********************************************************************
+ Print - Function that sends the data from richedit control to the printer
+
+ NOTE: Any errors encountered are saved to the vhr variable
+********************************************************************/
+void Print(
+    __in_opt HWND hRtfWnd
+    )
+{
+    HRESULT hr = S_OK;
+    FORMATRANGE fRange;
+    RECT rcPage;
+    RECT rcPrintablePage;
+    GETTEXTLENGTHEX gTxex;
+    HDC hPrinterDC = vpPrintDlg->hDC;
+    int nHorizRes = ::GetDeviceCaps(hPrinterDC, HORZRES);
+    int nVertRes = ::GetDeviceCaps(hPrinterDC, VERTRES);
+    int nLogPixelsX = ::GetDeviceCaps(hPrinterDC, LOGPIXELSX);
+    //int nLogPixelsY = ::GetDeviceCaps(hPrinterDC, LOGPIXELSY);
+    LONG_PTR lTextLength = 0; // Length of document.
+    LONG_PTR lTextPrinted = 0; // Amount of document printed.
+    DOCINFOW dInfo;
+    LPDEVNAMES pDevnames;
+    LPWSTR sczProductName = NULL;
+    BOOL fStartedDoc = FALSE;
+    BOOL fPrintedSomething = FALSE;
+
+    // Ensure the printer DC is in MM_TEXT mode.
+    if (0 == ::SetMapMode(hPrinterDC, MM_TEXT))
+    {
+        ExitWithLastError(hr, "failed to set map mode");
+    }
+
+    // Rendering to the same DC we are measuring.
+    ::ZeroMemory(&fRange, sizeof(fRange));
+    fRange.hdc = fRange.hdcTarget = hPrinterDC;
+
+    // Set up the page.
+    rcPage.left = rcPage.top = 0;
+    rcPage.right = MulDiv(nHorizRes, ONE_INCH, nLogPixelsX);
+    rcPage.bottom = MulDiv(nVertRes, ONE_INCH, nLogPixelsX);
+
+    // Set up 1" margins all around.
+    rcPrintablePage.left = rcPage.left + ONE_INCH;  
+    rcPrintablePage.top = rcPage.top + ONE_INCH;
+    rcPrintablePage.right = rcPage.right - ONE_INCH;
+    rcPrintablePage.bottom = rcPage.bottom - ONE_INCH;
+
+    // Set up the print job (standard printing stuff here).
+    ::ZeroMemory(&dInfo, sizeof(dInfo));
+    dInfo.cbSize = sizeof(DOCINFO);
+    hr = WcaGetProperty(L"ProductName", &sczProductName);
+    if (FAILED(hr))
+    {
+        // If we fail to get the product name, don't fail, just leave it blank;
+        dInfo.lpszDocName = L"";
+        hr = S_OK;
+    }
+    else
+    {
+        dInfo.lpszDocName = sczProductName;
+    }
+
+    pDevnames = (LPDEVNAMES)::GlobalLock(vpPrintDlg->hDevNames);
+    ExitOnNullWithLastError(pDevnames, hr, "failed to get global lock");
+
+    dInfo.lpszOutput  = (LPWSTR)pDevnames + pDevnames->wOutputOffset;
+
+    if (0 == ::GlobalUnlock(pDevnames))
+    {
+        ExitWithLastError(hr, "failed to release global lock");
+    }
+
+    // Start the document.
+    if (0 >= ::StartDocW(hPrinterDC, &dInfo))
+    {
+        ExitWithLastError(hr, "failed to start print document");
+    }
+
+    fStartedDoc = TRUE;
+
+    ::ZeroMemory(&gTxex, sizeof(gTxex));
+    gTxex.flags = GTL_NUMCHARS | GTL_PRECISE;
+    lTextLength = ::SendMessageW(hRtfWnd, EM_GETTEXTLENGTHEX, (LONG_PTR)&gTxex, 0);
+
+    while (lTextPrinted < lTextLength)
+    {
+        // Start the page.
+        if (0 >= ::StartPage(hPrinterDC))
+        {
+            ExitWithLastError(hr, "failed to start print page");
+        }
+
+        // Always reset to the full printable page and start where the
+        // last text left off (or zero at the beginning).
+        fRange.rc = rcPrintablePage;
+        fRange.rcPage = rcPage;
+        fRange.chrg.cpMin = (LONG)lTextPrinted;
+        fRange.chrg.cpMax = -1;
+
+        // Print as much text as can fit on a page. The return value is
+        // the index of the first character on the next page. Using TRUE
+        // for the wParam parameter causes the text to be printed.
+        lTextPrinted = ::SendMessageW(hRtfWnd, EM_FORMATRANGE, TRUE, (LPARAM)&fRange);
+        fPrintedSomething = TRUE;
+
+        // If text wasn't printed (i.e. we didn't move past the point we started) then
+        // something must have gone wrong.
+        if (lTextPrinted <= fRange.chrg.cpMin)
+        {
+            hr = E_FAIL;
+            ExitOnFailure(hr, "failed to print some text");
+        }
+
+        // Print last page.
+        if (0 >= ::EndPage(hPrinterDC))
+        {
+            ExitWithLastError(hr, "failed to end print page");
+        }
+    }
+
+LExit:
+    // Tell the control to release cached information, if we actually tried to
+    // print something.
+    if (fPrintedSomething)
+    {
+        ::SendMessageW(hRtfWnd, EM_FORMATRANGE, 0, (LPARAM)NULL);
+    }
+
+    if (fStartedDoc)
+    {
+        ::EndDoc(hPrinterDC);
+    }
+
+    ReleaseStr(sczProductName);
+
+    vhr = hr;
+}
+
+
+/********************************************************************
+ ShowErrorMessage - Display MessageBox showing the message for hr.
+
+********************************************************************/
+void ShowErrorMessage(
+    __in HRESULT hr
+    )
+{
+    WCHAR wzMsg[STRING_CAPACITY];
+
+#pragma prefast(push)
+#pragma prefast(disable:25028)
+    if (0 != ::FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM, 0, hr, 0, wzMsg, countof(wzMsg), 0))
+#pragma prefast(pop)
+    {
+        HWND hWnd = ::GetForegroundWindow();
+        ::MessageBoxW(hWnd, wzMsg, L"PrintEULA", MB_OK | MB_ICONWARNING);
+    }
+}
diff --git a/src/ext/UI/ca/cost.h b/src/ext/UI/ca/cost.h
new file mode 100644
index 00000000..8b8e8874
--- /dev/null
+++ b/src/ext/UI/ca/cost.h
@@ -0,0 +1,9 @@
+#pragma once
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+
+const UINT COST_SECUREOBJECT = 1000;
+const UINT COST_SERVICECONFIG = 1000;
+const UINT COST_XMLFILE = 1000;
+const UINT COST_CLOSEAPP = 500;
+
diff --git a/src/ext/UI/ca/dllmain.cpp b/src/ext/UI/ca/dllmain.cpp
new file mode 100644
index 00000000..df53f872
--- /dev/null
+++ b/src/ext/UI/ca/dllmain.cpp
@@ -0,0 +1,26 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+#include "precomp.h"
+
+/********************************************************************
+DllMain - standard entry point for all WiX CustomActions
+
+********************************************************************/
+extern "C" BOOL WINAPI DllMain(
+    IN HINSTANCE hInst,
+    IN ULONG ulReason,
+    IN LPVOID)
+{
+    switch(ulReason)
+    {
+    case DLL_PROCESS_ATTACH:
+        WcaGlobalInitialize(hInst);
+        break;
+
+    case DLL_PROCESS_DETACH:
+        WcaGlobalFinalize();
+        break;
+    }
+
+    return TRUE;
+}
diff --git a/src/ext/UI/ca/precomp.h b/src/ext/UI/ca/precomp.h
new file mode 100644
index 00000000..e95240c6
--- /dev/null
+++ b/src/ext/UI/ca/precomp.h
@@ -0,0 +1,18 @@
+#pragma once
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+
+#include <windows.h>
+#include <msiquery.h>
+#include <richedit.h>
+#include <shlwapi.h>
+
+#include "wcautil.h"
+#include "aclutil.h"
+#include "fileutil.h"
+#include "memutil.h"
+#include "strutil.h"
+#include "xmlutil.h"
+
+#include "CustomMsiErrors.h"
+#include "cost.h"
diff --git a/src/ext/UI/ca/uica.def b/src/ext/UI/ca/uica.def
new file mode 100644
index 00000000..62ce8135
--- /dev/null
+++ b/src/ext/UI/ca/uica.def
@@ -0,0 +1,8 @@
+; Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+
+LIBRARY      "uica"
+
+EXPORTS
+        PrintEula
+        ValidatePath
diff --git a/src/ext/UI/ca/uica.v3.ncrunchproject b/src/ext/UI/ca/uica.v3.ncrunchproject
new file mode 100644
index 00000000..319cd523
--- /dev/null
+++ b/src/ext/UI/ca/uica.v3.ncrunchproject
@@ -0,0 +1,5 @@
+<ProjectConfiguration>
+  <Settings>
+    <IgnoreThisComponentCompletely>True</IgnoreThisComponentCompletely>
+  </Settings>
+</ProjectConfiguration>
\ No newline at end of file
diff --git a/src/ext/UI/ca/uica.vcxproj b/src/ext/UI/ca/uica.vcxproj
new file mode 100644
index 00000000..5ded1266
--- /dev/null
+++ b/src/ext/UI/ca/uica.vcxproj
@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
+
+<Project DefaultTargets="Build" ToolsVersion="16.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{F72D34CA-48DA-4DFD-91A9-A0C78BEF6981}</ProjectGuid>
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <TargetName>uica</TargetName>
+    <PlatformToolset>v142</PlatformToolset>
+    <CharacterSet>MultiByte</CharacterSet>
+    <ProjectModuleDefinitionFile>uica.def</ProjectModuleDefinitionFile>
+    <Description>WiX Toolset UI CustomAction</Description>
+  </PropertyGroup>
+
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+
+  <PropertyGroup>
+    <ProjectAdditionalLinkLibraries>msi.lib;shlwapi.lib</ProjectAdditionalLinkLibraries>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ClCompile Include="dllmain.cpp">
+      <PrecompiledHeader>Create</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="DriveCheck.cpp" />
+    <ClCompile Include="PrintEula.cpp" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ClInclude Include="cost.h" />
+    <ClInclude Include="precomp.h" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include="uica.def" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="WixToolset.Dutil" Version="4.0.72" />
+    <PackageReference Include="WixToolset.WcaUtil" Version="4.0.19" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" />
+    <PackageReference Include="Nerdbank.GitVersioning" Version="3.3.37" />
+  </ItemGroup>
+
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+</Project>