private static void SendObfuscated(string strKeys)
{
Debug.Assert(strKeys != null);
if (strKeys == null)
{
throw new ArgumentNullException("strKeys");
}
if (strKeys.Length == 0)
{
return;
}
ClipboardEventChainBlocker cev = new ClipboardEventChainBlocker();
ClipboardContents cnt = new ClipboardContents(true);
Exception excpInner = null;
char[] vSpecial = new char[] { '{', '}', '(', ')', '+', '^', '%',
' ', '\t', '\r', '\n' };
try
{
List <string> vParts = SplitKeySequence(strKeys);
foreach (string strPart in vParts)
{
if (strPart.Length == 0)
{
continue;
}
if (strPart.IndexOfAny(vSpecial) >= 0)
{
SendKeysWithSpecial(strPart);
}
else
{
MixedTransfer(strPart);
}
}
}
catch (Exception ex) { excpInner = ex; }
cnt.SetData();
cev.Release();
if (excpInner != null)
{
throw excpInner;
}
}
public DialogResult ShowDialog(out object objResult, object objConstructParam)
{
objResult = null;
ProcessMessagesEx();
ClipboardEventChainBlocker ccb = new ClipboardEventChainBlocker();
byte[] pbClipHash = ClipboardUtil.ComputeHash();
Bitmap bmpBack = UIUtil.CreateScreenshot();
if(bmpBack != null) UIUtil.DimImage(bmpBack);
DialogResult dr = DialogResult.None;
try
{
uint uOrgThreadId = NativeMethods.GetCurrentThreadId();
IntPtr pOrgDesktop = NativeMethods.GetThreadDesktop(uOrgThreadId);
string strName = "D" + Convert.ToBase64String(
Guid.NewGuid().ToByteArray(), Base64FormattingOptions.None);
strName = strName.Replace(@"+", string.Empty);
strName = strName.Replace(@"/", string.Empty);
strName = strName.Replace(@"=", string.Empty);
NativeMethods.DesktopFlags deskFlags =
NativeMethods.DesktopFlags.CreateMenu |
NativeMethods.DesktopFlags.CreateWindow |
NativeMethods.DesktopFlags.ReadObjects |
NativeMethods.DesktopFlags.WriteObjects |
NativeMethods.DesktopFlags.SwitchDesktop;
IntPtr pNewDesktop = NativeMethods.CreateDesktop(strName,
null, IntPtr.Zero, 0, deskFlags, IntPtr.Zero);
if(pNewDesktop == IntPtr.Zero)
throw new InvalidOperationException();
SecureThreadParams stp = new SecureThreadParams();
stp.BackgroundBitmap = bmpBack;
stp.ThreadDesktop = pNewDesktop;
stp.FormConstructParam = objConstructParam;
Thread th = new Thread(this.SecureDialogThread);
th.CurrentCulture = Thread.CurrentThread.CurrentCulture;
th.CurrentUICulture = Thread.CurrentThread.CurrentUICulture;
th.Start(stp);
th.Join();
if(!NativeMethods.SwitchDesktop(pOrgDesktop)) { Debug.Assert(false); }
NativeMethods.SetThreadDesktop(pOrgDesktop);
if(!NativeMethods.CloseDesktop(pNewDesktop)) { Debug.Assert(false); }
NativeMethods.CloseDesktop(pOrgDesktop);
dr = stp.DialogResult;
objResult = stp.ResultObject;
}
catch(Exception) { Debug.Assert(false); }
byte[] pbNewClipHash = ClipboardUtil.ComputeHash();
if((pbClipHash != null) && (pbNewClipHash != null) &&
!MemUtil.ArraysEqual(pbClipHash, pbNewClipHash))
ClipboardUtil.Clear();
ccb.Release();
if(bmpBack != null) bmpBack.Dispose();
// If something failed, show the dialog on the normal desktop
if(dr == DialogResult.None)
{
Form f = m_fnConstruct(objConstructParam);
dr = f.ShowDialog();
objResult = m_fnResultBuilder(f);
UIUtil.DestroyForm(f);
}
return dr;
}
public DialogResult ShowDialog(out object objResult, object objConstructParam)
{
objResult = null;
ProcessMessagesEx();
ClipboardEventChainBlocker ccb = new ClipboardEventChainBlocker();
byte[] pbClipHash = ClipboardUtil.ComputeHash();
Bitmap bmpBack = UIUtil.CreateScreenshot();
if(bmpBack != null) UIUtil.DimImage(bmpBack);
DialogResult dr = DialogResult.None;
try
{
uint uOrgThreadId = NativeMethods.GetCurrentThreadId();
IntPtr pOrgDesktop = NativeMethods.GetThreadDesktop(uOrgThreadId);
string strName = "D" + Convert.ToBase64String(
CryptoRandom.Instance.GetRandomBytes(16),
Base64FormattingOptions.None);
strName = strName.Replace(@"+", string.Empty);
strName = strName.Replace(@"/", string.Empty);
strName = strName.Replace(@"=", string.Empty);
if(strName.Length > 15) strName = strName.Substring(0, 15);
NativeMethods.DesktopFlags deskFlags =
(NativeMethods.DesktopFlags.CreateMenu |
NativeMethods.DesktopFlags.CreateWindow |
NativeMethods.DesktopFlags.ReadObjects |
NativeMethods.DesktopFlags.WriteObjects |
NativeMethods.DesktopFlags.SwitchDesktop);
IntPtr pNewDesktop = NativeMethods.CreateDesktop(strName,
null, IntPtr.Zero, 0, deskFlags, IntPtr.Zero);
if(pNewDesktop == IntPtr.Zero)
throw new InvalidOperationException();
bool bNameSupported = NativeMethods.DesktopNameContains(pNewDesktop,
strName).GetValueOrDefault(false);
Debug.Assert(bNameSupported);
SecureThreadInfo stp = new SecureThreadInfo();
stp.BackgroundBitmap = bmpBack;
stp.ThreadDesktop = pNewDesktop;
stp.FormConstructParam = objConstructParam;
Thread th = new Thread(this.SecureDialogThread);
th.CurrentCulture = Thread.CurrentThread.CurrentCulture;
th.CurrentUICulture = Thread.CurrentThread.CurrentUICulture;
th.Start(stp);
SecureThreadState st = SecureThreadState.None;
while(st != SecureThreadState.Terminated)
{
th.Join(150);
lock(stp) { st = stp.State; }
if((st == SecureThreadState.ShowingDialog) && bNameSupported)
{
IntPtr hCurDesk = NativeMethods.OpenInputDesktop(0,
false, NativeMethods.DesktopFlags.ReadObjects);
if(hCurDesk == IntPtr.Zero) { Debug.Assert(false); continue; }
if(hCurDesk == pNewDesktop)
{
if(!NativeMethods.CloseDesktop(hCurDesk)) { Debug.Assert(false); }
continue;
}
bool? obOnSec = NativeMethods.DesktopNameContains(hCurDesk, strName);
if(!NativeMethods.CloseDesktop(hCurDesk)) { Debug.Assert(false); }
lock(stp) { st = stp.State; } // Update; might have changed
if(obOnSec.HasValue && !obOnSec.Value &&
(st == SecureThreadState.ShowingDialog))
HandleUnexpectedDesktopSwitch(pOrgDesktop, pNewDesktop, stp);
}
}
if(!NativeMethods.SwitchDesktop(pOrgDesktop)) { Debug.Assert(false); }
NativeMethods.SetThreadDesktop(pOrgDesktop);
th.Join(); // Ensure thread terminated before closing desktop
if(!NativeMethods.CloseDesktop(pNewDesktop)) { Debug.Assert(false); }
NativeMethods.CloseDesktop(pOrgDesktop); // Optional
dr = stp.DialogResult;
objResult = stp.ResultObject;
}
catch(Exception) { Debug.Assert(false); }
byte[] pbNewClipHash = ClipboardUtil.ComputeHash();
if((pbClipHash != null) && (pbNewClipHash != null) &&
!MemUtil.ArraysEqual(pbClipHash, pbNewClipHash))
ClipboardUtil.Clear();
ccb.Release();
if(bmpBack != null) bmpBack.Dispose();
// If something failed, show the dialog on the normal desktop
if(dr == DialogResult.None)
{
Form f = m_fnConstruct(objConstructParam);
dr = f.ShowDialog();
objResult = m_fnResultBuilder(f);
UIUtil.DestroyForm(f);
}
return dr;
}
private static void SendObfuscated(string strKeys, SiStateEx siState)
{
if(string.IsNullOrEmpty(strKeys)) return;
ClipboardEventChainBlocker cev = new ClipboardEventChainBlocker();
ClipboardContents cnt = new ClipboardContents(true, true);
Exception excpInner = null;
char[] vSpecial = new char[]{ '{', '}', '(', ')', '+', '^', '%',
' ', '\t', '\r', '\n' };
try
{
List<string> vParts = SplitKeySequence(strKeys);
foreach(string strPart in vParts)
{
if(string.IsNullOrEmpty(strPart)) continue;
if(strPart.IndexOfAny(vSpecial) >= 0)
SendKeysWithSpecial(strPart, siState);
else MixedTransfer(strPart, siState);
}
}
catch(Exception ex) { excpInner = ex; }
cnt.SetData();
cev.Release();
if(excpInner != null) throw excpInner;
}
private static void SendObfuscated(string strKeys)
{
Debug.Assert(strKeys != null);
if(strKeys == null) throw new ArgumentNullException("strKeys");
if(strKeys.Length == 0) return;
ClipboardEventChainBlocker cev = new ClipboardEventChainBlocker();
ClipboardContents cnt = new ClipboardContents(true);
Exception excpInner = null;
char[] vSpecial = new char[]{ '{', '}', '(', ')', '+', '^', '%',
' ', '\t', '\r', '\n' };
try
{
List<string> vParts = SplitKeySequence(strKeys);
foreach(string strPart in vParts)
{
if(strPart.Length == 0) continue;
if(strPart.IndexOfAny(vSpecial) >= 0)
SendKeysWithSpecial(strPart);
else
MixedTransfer(strPart);
}
}
catch(Exception ex) { excpInner = ex; }
cnt.SetData();
cev.Release();
if(excpInner != null) throw excpInner;
}
public DialogResult ShowDialog()
{
ProcessMessagesEx();
ClipboardEventChainBlocker ccb = new ClipboardEventChainBlocker();
byte[] pbClipHash = ClipboardUtil.ComputeHash();
Bitmap bmpBack = UIUtil.CreateScreenshot();
if(bmpBack != null) UIUtil.DimImage(bmpBack);
DialogResult dr = DialogResult.None;
try
{
uint uOrgThreadId = NativeMethods.GetCurrentThreadId();
IntPtr pOrgDesktop = NativeMethods.GetThreadDesktop(uOrgThreadId);
string strName = "D" + Convert.ToBase64String(
Guid.NewGuid().ToByteArray(), Base64FormattingOptions.None);
strName = strName.Replace(@"+", string.Empty);
strName = strName.Replace(@"/", string.Empty);
strName = strName.Replace(@"=", string.Empty);
NativeMethods.DesktopFlags deskFlags =
NativeMethods.DesktopFlags.CreateMenu |
NativeMethods.DesktopFlags.CreateWindow |
NativeMethods.DesktopFlags.ReadObjects |
NativeMethods.DesktopFlags.WriteObjects |
NativeMethods.DesktopFlags.SwitchDesktop;
IntPtr pNewDesktop = NativeMethods.CreateDesktop(strName,
null, IntPtr.Zero, 0, deskFlags, IntPtr.Zero);
if(pNewDesktop == IntPtr.Zero)
{
Debug.Assert(false);
return DialogResult.Cancel;
}
SecureThreadParams stp = new SecureThreadParams();
stp.BackgroundBitmap = bmpBack;
stp.ThreadDesktop = pNewDesktop;
Thread th = new Thread(this.SecureDialogThread);
th.CurrentCulture = Thread.CurrentThread.CurrentCulture;
th.CurrentUICulture = Thread.CurrentThread.CurrentUICulture;
th.Start(stp);
th.Join();
if(!NativeMethods.SwitchDesktop(pOrgDesktop)) { Debug.Assert(false); }
NativeMethods.SetThreadDesktop(pOrgDesktop);
if(!NativeMethods.CloseDesktop(pNewDesktop)) { Debug.Assert(false); }
NativeMethods.CloseDesktop(pOrgDesktop);
dr = stp.Result;
}
catch(Exception) { Debug.Assert(false); }
byte[] pbNewClipHash = ClipboardUtil.ComputeHash();
if((pbClipHash != null) && (pbNewClipHash != null) &&
!MemUtil.ArraysEqual(pbClipHash, pbNewClipHash))
ClipboardUtil.Clear();
ccb.Release();
if(bmpBack != null) bmpBack.Dispose();
return dr;
}