internal static WindowsIdentity KerberosCertificateLogon(X509Certificate2 certificate)
{
int status;
SafeHGlobalHandle pSourceName = null;
SafeHGlobalHandle pPackageName = null;
SafeHGlobalHandle pLogonInfo = null;
SafeLsaLogonProcessHandle logonHandle = null;
SafeLsaReturnBufferHandle profileHandle = null;
SafeCloseHandle tokenHandle = null;
try
{
pSourceName = SafeHGlobalHandle.AllocHGlobal(NativeMethods.LsaSourceName.Length + 1);
Marshal.Copy(NativeMethods.LsaSourceName, 0, pSourceName.DangerousGetHandle(), NativeMethods.LsaSourceName.Length);
UNICODE_INTPTR_STRING sourceName = new UNICODE_INTPTR_STRING(NativeMethods.LsaSourceName.Length, NativeMethods.LsaSourceName.Length + 1, pSourceName.DangerousGetHandle());
Privilege privilege = null;
RuntimeHelpers.PrepareConstrainedRegions();
// Try to get an impersonation token.
try
{
// Try to enable the TCB privilege if possible
try
{
privilege = new Privilege(Privilege.SeTcbPrivilege);
privilege.Enable();
}
catch (PrivilegeNotHeldException ex)
{
DiagnosticUtility.TraceHandledException(ex, TraceEventType.Information);
}
IntPtr dummy = IntPtr.Zero;
status = NativeMethods.LsaRegisterLogonProcess(ref sourceName, out logonHandle, out dummy);
if (NativeMethods.ERROR_ACCESS_DENIED == NativeMethods.LsaNtStatusToWinError(status))
{
// We don't have the Tcb privilege. The best we can hope for is to get an Identification token.
status = NativeMethods.LsaConnectUntrusted(out logonHandle);
}
if (status < 0) // non-negative numbers indicate success
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(NativeMethods.LsaNtStatusToWinError(status)));
}
}
finally
{
// if reverting privilege fails, fail fast!
int revertResult = -1;
string message = null;
try
{
revertResult = privilege.Revert();
if (revertResult != 0)
{
message = SR.GetString(SR.RevertingPrivilegeFailed, new Win32Exception(revertResult));
}
}
finally
{
if (revertResult != 0)
{
DiagnosticUtility.FailFast(message);
}
}
}
// package name ("Kerberos")
pPackageName = SafeHGlobalHandle.AllocHGlobal(NativeMethods.LsaKerberosName.Length + 1);
Marshal.Copy(NativeMethods.LsaKerberosName, 0, pPackageName.DangerousGetHandle(), NativeMethods.LsaKerberosName.Length);
UNICODE_INTPTR_STRING packageName = new UNICODE_INTPTR_STRING(NativeMethods.LsaKerberosName.Length, NativeMethods.LsaKerberosName.Length + 1, pPackageName.DangerousGetHandle());
uint packageId = 0;
status = NativeMethods.LsaLookupAuthenticationPackage(logonHandle, ref packageName, out packageId);
if (status < 0) // non-negative numbers indicate success
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(NativeMethods.LsaNtStatusToWinError(status)));
}
// source context
TOKEN_SOURCE sourceContext = new TOKEN_SOURCE();
if (!NativeMethods.AllocateLocallyUniqueId(out sourceContext.SourceIdentifier))
{
int dwErrorCode = Marshal.GetLastWin32Error();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(dwErrorCode));
}
// SourceContext
sourceContext.Name = new char[8];
sourceContext.Name[0] = 'W'; sourceContext.Name[1] = 'C'; sourceContext.Name[2] = 'F';
// LogonInfo
byte[] certRawData = certificate.RawData;
int logonInfoSize = KERB_CERTIFICATE_S4U_LOGON.Size + certRawData.Length;
pLogonInfo = SafeHGlobalHandle.AllocHGlobal(logonInfoSize);
unsafe
{
KERB_CERTIFICATE_S4U_LOGON *pInfo = (KERB_CERTIFICATE_S4U_LOGON *)pLogonInfo.DangerousGetHandle().ToPointer();
pInfo->MessageType = KERB_LOGON_SUBMIT_TYPE.KerbCertificateS4ULogon;
pInfo->Flags = NativeMethods.KERB_CERTIFICATE_S4U_LOGON_FLAG_CHECK_LOGONHOURS;
pInfo->UserPrincipalName = new UNICODE_INTPTR_STRING(0, 0, IntPtr.Zero);
pInfo->DomainName = new UNICODE_INTPTR_STRING(0, 0, IntPtr.Zero);
pInfo->CertificateLength = (uint)certRawData.Length;
pInfo->Certificate = new IntPtr(pLogonInfo.DangerousGetHandle().ToInt64() + KERB_CERTIFICATE_S4U_LOGON.Size);
Marshal.Copy(certRawData, 0, pInfo->Certificate, certRawData.Length);
}
QUOTA_LIMITS quotas = new QUOTA_LIMITS();
LUID logonId = new LUID();
uint profileBufferLength;
int subStatus = 0;
// Call LsaLogonUser
status = NativeMethods.LsaLogonUser(
logonHandle,
ref sourceName,
SecurityLogonType.Network,
packageId,
pLogonInfo.DangerousGetHandle(),
(uint)logonInfoSize,
IntPtr.Zero,
ref sourceContext,
out profileHandle,
out profileBufferLength,
out logonId,
out tokenHandle,
out quotas,
out subStatus
);
// LsaLogon has restriction (eg. password expired). SubStatus indicates the reason.
if ((uint)status == NativeMethods.STATUS_ACCOUNT_RESTRICTION && subStatus < 0)
{
status = subStatus;
}
if (status < 0) // non-negative numbers indicate success
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(NativeMethods.LsaNtStatusToWinError(status)));
}
if (subStatus < 0) // non-negative numbers indicate success
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(NativeMethods.LsaNtStatusToWinError(subStatus)));
}
return(new WindowsIdentity(tokenHandle.DangerousGetHandle(), SecurityUtils.AuthTypeCertMap));
}
finally
{
if (tokenHandle != null)
{
tokenHandle.Close();
}
if (pLogonInfo != null)
{
pLogonInfo.Close();
}
if (profileHandle != null)
{
profileHandle.Close();
}
if (pSourceName != null)
{
pSourceName.Close();
}
if (pPackageName != null)
{
pPackageName.Close();
}
if (logonHandle != null)
{
logonHandle.Close();
}
}
}
private static unsafe WindowsIdentity KerberosCertificateLogon(X509Certificate2 certificate)
{
SafeHGlobalHandle handle = null;
SafeHGlobalHandle handle2 = null;
SafeHGlobalHandle handle3 = null;
SafeLsaLogonProcessHandle lsaHandle = null;
SafeLsaReturnBufferHandle profileBuffer = null;
SafeCloseHandle token = null;
WindowsIdentity identity;
try
{
int num;
uint num6;
handle = SafeHGlobalHandle.AllocHGlobal((int)(System.IdentityModel.NativeMethods.LsaSourceName.Length + 1));
Marshal.Copy(System.IdentityModel.NativeMethods.LsaSourceName, 0, handle.DangerousGetHandle(), System.IdentityModel.NativeMethods.LsaSourceName.Length);
UNICODE_INTPTR_STRING logonProcessName = new UNICODE_INTPTR_STRING(System.IdentityModel.NativeMethods.LsaSourceName.Length, System.IdentityModel.NativeMethods.LsaSourceName.Length + 1, handle.DangerousGetHandle());
System.IdentityModel.Privilege privilege = null;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
try
{
privilege = new System.IdentityModel.Privilege("SeTcbPrivilege");
privilege.Enable();
}
catch (PrivilegeNotHeldException exception)
{
if (DiagnosticUtility.ShouldTraceInformation)
{
DiagnosticUtility.ExceptionUtility.TraceHandledException(exception, TraceEventType.Information);
}
}
IntPtr zero = IntPtr.Zero;
num = System.IdentityModel.NativeMethods.LsaRegisterLogonProcess(ref logonProcessName, out lsaHandle, out zero);
if (5 == System.IdentityModel.NativeMethods.LsaNtStatusToWinError(num))
{
num = System.IdentityModel.NativeMethods.LsaConnectUntrusted(out lsaHandle);
}
if (num < 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(System.IdentityModel.NativeMethods.LsaNtStatusToWinError(num)));
}
}
finally
{
int error = -1;
string message = null;
try
{
error = privilege.Revert();
if (error != 0)
{
message = System.IdentityModel.SR.GetString("RevertingPrivilegeFailed", new object[] { new Win32Exception(error) });
}
}
finally
{
if (error != 0)
{
DiagnosticUtility.FailFast(message);
}
}
}
handle2 = SafeHGlobalHandle.AllocHGlobal((int)(System.IdentityModel.NativeMethods.LsaKerberosName.Length + 1));
Marshal.Copy(System.IdentityModel.NativeMethods.LsaKerberosName, 0, handle2.DangerousGetHandle(), System.IdentityModel.NativeMethods.LsaKerberosName.Length);
UNICODE_INTPTR_STRING packageName = new UNICODE_INTPTR_STRING(System.IdentityModel.NativeMethods.LsaKerberosName.Length, System.IdentityModel.NativeMethods.LsaKerberosName.Length + 1, handle2.DangerousGetHandle());
uint authenticationPackage = 0;
num = System.IdentityModel.NativeMethods.LsaLookupAuthenticationPackage(lsaHandle, ref packageName, out authenticationPackage);
if (num < 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(System.IdentityModel.NativeMethods.LsaNtStatusToWinError(num)));
}
TOKEN_SOURCE sourceContext = new TOKEN_SOURCE();
if (!System.IdentityModel.NativeMethods.AllocateLocallyUniqueId(out sourceContext.SourceIdentifier))
{
int num4 = Marshal.GetLastWin32Error();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(num4));
}
sourceContext.Name = new char[8];
sourceContext.Name[0] = 'W';
sourceContext.Name[1] = 'C';
sourceContext.Name[2] = 'F';
byte[] rawData = certificate.RawData;
int cb = KERB_CERTIFICATE_S4U_LOGON.Size + rawData.Length;
handle3 = SafeHGlobalHandle.AllocHGlobal(cb);
KERB_CERTIFICATE_S4U_LOGON *kerb_certificate_su_logonPtr = (KERB_CERTIFICATE_S4U_LOGON *)handle3.DangerousGetHandle().ToPointer();
kerb_certificate_su_logonPtr->MessageType = KERB_LOGON_SUBMIT_TYPE.KerbCertificateS4ULogon;
kerb_certificate_su_logonPtr->Flags = 2;
kerb_certificate_su_logonPtr->UserPrincipalName = new UNICODE_INTPTR_STRING(0, 0, IntPtr.Zero);
kerb_certificate_su_logonPtr->DomainName = new UNICODE_INTPTR_STRING(0, 0, IntPtr.Zero);
kerb_certificate_su_logonPtr->CertificateLength = (uint)rawData.Length;
kerb_certificate_su_logonPtr->Certificate = new IntPtr(handle3.DangerousGetHandle().ToInt64() + KERB_CERTIFICATE_S4U_LOGON.Size);
Marshal.Copy(rawData, 0, kerb_certificate_su_logonPtr->Certificate, rawData.Length);
QUOTA_LIMITS quotas = new QUOTA_LIMITS();
LUID logonId = new LUID();
int subStatus = 0;
num = System.IdentityModel.NativeMethods.LsaLogonUser(lsaHandle, ref logonProcessName, System.IdentityModel.SecurityLogonType.Network, authenticationPackage, handle3.DangerousGetHandle(), (uint)cb, IntPtr.Zero, ref sourceContext, out profileBuffer, out num6, out logonId, out token, out quotas, out subStatus);
if ((num == -1073741714) && (subStatus < 0))
{
num = subStatus;
}
if (num < 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(System.IdentityModel.NativeMethods.LsaNtStatusToWinError(num)));
}
if (subStatus < 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception(System.IdentityModel.NativeMethods.LsaNtStatusToWinError(subStatus)));
}
identity = new WindowsIdentity(token.DangerousGetHandle(), "SSL/PCT");
}
finally
{
if (token != null)
{
token.Close();
}
if (handle3 != null)
{
handle3.Close();
}
if (profileBuffer != null)
{
profileBuffer.Close();
}
if (handle != null)
{
handle.Close();
}
if (handle2 != null)
{
handle2.Close();
}
if (lsaHandle != null)
{
lsaHandle.Close();
}
}
return(identity);
}