void InitializeCallStack()
{
if (OperationContext.Current == null || Header == null)
{
Header = new SecurityCallStack();
}
else
{
Header = SecurityCallStackContext.Current;
}
}
void LogCallChain(SecurityCallStack callStack)
{
//Log call stack here. For example:
foreach (SecurityCallFrame call in callStack.Calls)
{
Trace.Write("Activity ID = " + call.ActivityId + ",");
Trace.Write(" Address = " + call.Address + ",");
Trace.Write(" Authentication = " + call.Authentication + ",");
Trace.Write(" Time = " + call.CallTime + ",");
Trace.Write(" Identity = " + call.IdentityName + ",");
Trace.Write(" Operation = " + call.Operation + ",");
Trace.WriteLine(" Caller = " + call.CallerType);
}
}
void LogCallChain(SecurityCallStack callStack)
{
//Log call stack here. For example:
foreach(SecurityCallFrame call in callStack.Calls)
{
Trace.Write("Activity ID = " + call.ActivityId + ",");
Trace.Write(" Address = " + call.Address + ",");
Trace.Write(" Authentication = " + call.Authentication + ",");
Trace.Write(" Time = " + call.CallTime + ",");
Trace.Write(" Identity = " + call.IdentityName + ",");
Trace.Write(" Operation = " + call.Operation + ",");
Trace.WriteLine(" Caller = " + call.CallerType);
}
}
protected override void PreInvoke(object instance, object[] inputs)
{
try
{
SecurityCallStack callStack = SecurityCallStackContext.Current;
LogCallChain(callStack);
ValidateCallChain(callStack);
SignCallChain(callStack);
}
catch (NullReferenceException)
{
throw new InvalidOperationException("No security call stack was found. Are you using the right proxy?");
}
}
void ValidateCallChain(SecurityCallStack callStack)
{
//Perform custom validation steps here
}
void SignCallChain(SecurityCallStack callStack)
{
//Digitally sign call stack here
}
void SignCallChain(SecurityCallStack callStack)
{
//Digitally sign call stack here
}
void ValidateCallChain(SecurityCallStack callStack)
{
//Perform custom validation steps here
}
void ValidateCallChain(SecurityCallStack callStack)
{
//Perform custom validation steps here. For now:
throw new SecurityException("You must provide code to sign the call stack");
}
void ValidateCallChain(SecurityCallStack callStack)
{
//Perform custom validation steps here. For now:
throw new SecurityException("You must provide code to sign the call stack");
}
