private static Icon LoadIconFromResource(UIntPtr lpIconName)
{
HandleRef hmodule = new HandleRef(null, GetModuleHandle(null));
uint totalsize;
RESOURCE_ICONDIRENTRY[] entries;
SafeResourceBuffer[] entrybuffers;
RESOURCE_ICONDIR dir;
using (SafeResourceBuffer buffer = GetResourceBuffer(hmodule, lpIconName, MAKEINTRESOURCE(RT_GROUP_ICON)))
{
dir = buffer.Read <RESOURCE_ICONDIR>(0);
if (dir.idReserved != 0 || dir.idType != IMAGE_ICON || dir.idCount == 0)
{
throw new InvalidDataException("There is no icon directory in resource data.");
}
entries = new RESOURCE_ICONDIRENTRY[dir.idCount];
entrybuffers = new SafeResourceBuffer[dir.idCount];
uint entrysize = (uint)Marshal.SizeOf(typeof(RESOURCE_ICONDIRENTRY));
ulong offset = (uint)Marshal.SizeOf(typeof(RESOURCE_ICONDIR)) - entrysize;
totalsize = (uint)(Marshal.SizeOf(typeof(ICONDIR)) + (Marshal.SizeOf(typeof(ICONDIRENTRY)) * (dir.idCount - 1)));
entries[0] = dir.idEntries;
for (int i = 0; i < dir.idCount; i++, offset += entrysize)
{
if (i > 0)
{
entries[i] = buffer.Read <RESOURCE_ICONDIRENTRY>(offset);
}
uint iconsize = entries[i].dwBytesInRes;
SafeResourceBuffer entrybuffer = GetResourceBuffer(hmodule, MAKEINTRESOURCE(entries[i].nID), MAKEINTRESOURCE(RT_ICON));
if (iconsize != entrybuffer.ByteLength)
{
throw new InvalidDataException("Reported resource size is not equal to the icon size.");
}
entrybuffers[i] = entrybuffer;
totalsize += iconsize;
}
}
using (SafeLocalAllocHandle iconbuffer = SafeLocalAlloc(LMEM_ZEROINIT | LMEM_FIXED, totalsize))
{
using (UnmanagedMemoryStream outstream = iconbuffer.ToStream(FileAccess.ReadWrite))
{
ICONDIR icondir = new ICONDIR(dir);
iconbuffer.Write(0, icondir);
uint iconoffset = icondir.idEntries.dwImageOffset;
outstream.Position = iconoffset;
uint entrysize = (uint)Marshal.SizeOf(typeof(ICONDIRENTRY));
ulong offset = (uint)Marshal.SizeOf(typeof(ICONDIR));
ICONDIRENTRY entry = icondir.idEntries;
for (int i = 0; i < dir.idCount; i++, offset += entrysize)
{
if (i > 0)
{
entry = new ICONDIRENTRY(entries[i], iconoffset);
iconbuffer.Write(offset, entry);
}
using (UnmanagedMemoryStream instream = entrybuffers[i].ToStream())
{
instream.CopyTo(outstream);
}
if (outstream.Position != (iconoffset + entry.dwBytesInRes))
{
throw new InvalidOperationException();
}
iconoffset += entry.dwBytesInRes;
}
outstream.Position = 0;
return(new Icon(outstream));
}
}
}
private static unsafe SafeTokenHandle KerbS4ULogon(string upn, ref SafeTokenHandle safeTokenHandle)
{
SafeTokenHandle handle6;
byte[] array = new byte[] { 0x43, 0x4c, 0x52 };
IntPtr sizetdwBytes = new IntPtr((long)((ulong)(array.Length + 1)));
using (SafeLocalAllocHandle handle = Win32Native.LocalAlloc(0x40, sizetdwBytes))
{
if ((handle == null) || handle.IsInvalid)
{
throw new OutOfMemoryException();
}
handle.Initialize((ulong)(array.Length + 1L));
handle.WriteArray <byte>(0L, array, 0, array.Length);
Win32Native.UNICODE_INTPTR_STRING logonProcessName = new Win32Native.UNICODE_INTPTR_STRING(array.Length, handle);
SafeLsaLogonProcessHandle invalidHandle = SafeLsaLogonProcessHandle.InvalidHandle;
SafeLsaReturnBufferHandle profileBuffer = SafeLsaReturnBufferHandle.InvalidHandle;
try
{
int num;
Privilege privilege = null;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
try
{
privilege = new Privilege("SeTcbPrivilege");
privilege.Enable();
}
catch (PrivilegeNotHeldException)
{
}
IntPtr zero = IntPtr.Zero;
num = Win32Native.LsaRegisterLogonProcess(ref logonProcessName, ref invalidHandle, ref zero);
if (5 == Win32Native.LsaNtStatusToWinError(num))
{
num = Win32Native.LsaConnectUntrusted(ref invalidHandle);
}
}
catch
{
if (privilege != null)
{
privilege.Revert();
}
throw;
}
finally
{
if (privilege != null)
{
privilege.Revert();
}
}
if (num < 0)
{
throw GetExceptionFromNtStatus(num);
}
byte[] bytes = new byte["Kerberos".Length + 1];
Encoding.ASCII.GetBytes("Kerberos", 0, "Kerberos".Length, bytes, 0);
sizetdwBytes = new IntPtr((long)((ulong)bytes.Length));
using (SafeLocalAllocHandle handle4 = Win32Native.LocalAlloc(0, sizetdwBytes))
{
if ((handle4 == null) || handle4.IsInvalid)
{
throw new OutOfMemoryException();
}
handle4.Initialize((ulong)bytes.Length);
handle4.WriteArray <byte>(0L, bytes, 0, bytes.Length);
Win32Native.UNICODE_INTPTR_STRING packageName = new Win32Native.UNICODE_INTPTR_STRING("Kerberos".Length, handle4);
uint authenticationPackage = 0;
num = Win32Native.LsaLookupAuthenticationPackage(invalidHandle, ref packageName, ref authenticationPackage);
if (num < 0)
{
throw GetExceptionFromNtStatus(num);
}
Win32Native.TOKEN_SOURCE sourceContext = new Win32Native.TOKEN_SOURCE();
if (!Win32Native.AllocateLocallyUniqueId(ref sourceContext.SourceIdentifier))
{
throw new SecurityException(Win32Native.GetMessage(Marshal.GetLastWin32Error()));
}
sourceContext.Name = new char[8];
sourceContext.Name[0] = 'C';
sourceContext.Name[1] = 'L';
sourceContext.Name[2] = 'R';
uint profileBufferLength = 0;
Win32Native.LUID logonId = new Win32Native.LUID();
Win32Native.QUOTA_LIMITS quotas = new Win32Native.QUOTA_LIMITS();
int subStatus = 0;
byte[] buffer3 = Encoding.Unicode.GetBytes(upn);
int num5 = Marshal.SizeOf(typeof(Win32Native.KERB_S4U_LOGON)) + buffer3.Length;
using (SafeLocalAllocHandle handle5 = Win32Native.LocalAlloc(0x40, new IntPtr(num5)))
{
if ((handle5 == null) || handle5.IsInvalid)
{
throw new OutOfMemoryException();
}
handle5.Initialize((ulong)num5);
ulong byteOffset = (ulong)Marshal.SizeOf(typeof(Win32Native.KERB_S4U_LOGON));
handle5.WriteArray <byte>(byteOffset, buffer3, 0, buffer3.Length);
byte *pointer = null;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
handle5.AcquirePointer(ref pointer);
Win32Native.KERB_S4U_LOGON kerb_su_logon = new Win32Native.KERB_S4U_LOGON {
MessageType = 12,
Flags = 0,
ClientUpn = new Win32Native.UNICODE_INTPTR_STRING(buffer3.Length, new IntPtr((void *)(pointer + byteOffset)))
};
handle5.Write <Win32Native.KERB_S4U_LOGON>(0L, kerb_su_logon);
num = Win32Native.LsaLogonUser(invalidHandle, ref logonProcessName, 3, authenticationPackage, new IntPtr((void *)pointer), (uint)handle5.ByteLength, IntPtr.Zero, ref sourceContext, ref profileBuffer, ref profileBufferLength, ref logonId, ref safeTokenHandle, ref quotas, ref subStatus);
if ((num == -1073741714) && (subStatus < 0))
{
num = subStatus;
}
if (num < 0)
{
throw GetExceptionFromNtStatus(num);
}
if (subStatus < 0)
{
throw GetExceptionFromNtStatus(subStatus);
}
}
finally
{
if (pointer != null)
{
handle5.ReleasePointer();
}
}
}
handle6 = safeTokenHandle;
}
}
finally
{
if (!invalidHandle.IsInvalid)
{
invalidHandle.Dispose();
}
if (!profileBuffer.IsInvalid)
{
profileBuffer.Dispose();
}
}
}
return(handle6);
}
