public object GetInstance(InstanceContext instanceContext, Message message)
{
object result = null;
Guid incomingTransactionID = Guid.Empty;
if (ContextUtil.IsInTransaction)
{
incomingTransactionID = ContextUtil.TransactionId;
}
ComPlusInstanceCreationTrace.Trace(TraceEventType.Verbose, TraceCode.ComIntegrationInstanceCreationRequest,
SR.TraceCodeComIntegrationInstanceCreationRequest, this.info, message, incomingTransactionID);
WindowsIdentity callerIdentity = null;
callerIdentity = MessageUtil.GetMessageIdentity(message);
WindowsImpersonationContext impersonateContext = null;
try
{
try
{
if (this.info.HostingMode ==
HostingMode.WebHostOutOfProcess)
{
if (SecurityUtils.IsAtleastImpersonationToken(new SafeCloseHandle(callerIdentity.Token, false)))
{
impersonateContext = callerIdentity.Impersonate();
}
else
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new COMException(SR.GetString(SR.BadImpersonationLevelForOutOfProcWas), HR.ERROR_BAD_IMPERSONATION_LEVEL));
}
}
CLSCTX clsctx = CLSCTX.SERVER;
if (PlatformSupportsBitness && (this.info.HostingMode ==
HostingMode.WebHostOutOfProcess))
{
if (this.info.Bitness == Bitness.Bitness32)
{
clsctx |= CLSCTX.ACTIVATE_32_BIT_SERVER;
}
else
{
clsctx |= CLSCTX.ACTIVATE_64_BIT_SERVER;
}
}
result = SafeNativeMethods.CoCreateInstance(
info.Clsid,
null,
clsctx,
IID_IUnknown);
}
finally
{
if (impersonateContext != null)
{
impersonateContext.Undo();
}
}
}
catch (Exception e)
{
if (Fx.IsFatal(e))
{
throw;
}
Uri from = null;
if (message.Headers.From != null)
{
from = message.Headers.From.Uri;
}
DiagnosticUtility.EventLog.LogEvent(TraceEventType.Error,
(ushort)System.Runtime.Diagnostics.EventLogCategory.ComPlus,
(uint)System.Runtime.Diagnostics.EventLogEventId.ComPlusInstanceCreationError,
from == null ? string.Empty : from.ToString(),
this.info.AppID.ToString(),
this.info.Clsid.ToString(),
incomingTransactionID.ToString(),
callerIdentity.Name,
e.ToString());
throw TraceUtility.ThrowHelperError(e, message);
}
TransactionProxy proxy = instanceContext.Extensions.Find <TransactionProxy>();
if (proxy != null)
{
proxy.InstanceID = result.GetHashCode();
}
ComPlusInstanceCreationTrace.Trace(TraceEventType.Verbose, TraceCode.ComIntegrationInstanceCreationSuccess,
SR.TraceCodeComIntegrationInstanceCreationSuccess, this.info, message, result.GetHashCode(), incomingTransactionID);
return(result);
}