kerberos

import kerberos import os # This is a simplified example. A real Kerberos setup with a KDC, service principal, and active tickets (kinit) is required. # Set up a dummy service principal name for illustration. # In a real scenario, this would be 'HTTP/your.service.com@REALM' service_principal = os.environ.get('KERBEROS_SPN', 'HTTP/host.example.com@EXAMPLE.COM') negotiate_token = None try: # Initialize a Kerberos GSSAPI client context. # `gssflags` can be used to specify options like GSS_C_DELEG_FLAG. # `principal` can specify the client principal, if not using default cache. result, context = kerberos.authGSSClientInit(service_principal) # The client sends a 'token' (negotiate_token) to the server. # In a real HTTP exchange, this token would be part of the Authorization header. # This step simulates the client-side generation of the initial token. result = kerberos.authGSSClientStep(context, negotiate_token) # If successful, get the token to send to the server. negotiate_token = kerberos.authGSSClientResponse(context) print(f"Initial GSSAPI token generated: {negotiate_token[:30]}...") # In a real scenario, the server would send back its own token, # which the client would then process in subsequent authGSSClientStep calls. # For this quickstart, we just demonstrate the client init. except kerberos.KerberosError as e: print(f"Kerberos Error: {e}") except Exception as e: print(f"An unexpected error occurred: {e}") finally: # Always clean up the context to free resources. if 'context' in locals() and context is not None: kerberos.authGSSClientClean(context)