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"""
Example of Duo Auth API user authentication using asynchronous resquest/response methods
"""
import duo_client
import sys
import getpass
argv_iter = iter(sys.argv[1:])
def _get_next_arg(prompt, secure=False):
"""Read information from STDIN, using getpass when sensitive information should not be echoed to tty"""
try:
return next(argv_iter)
except StopIteration:
if secure is True:
return getpass.getpass(prompt)
else:
return input(prompt)
def prompt_for_credentials() -> dict:
"""Collect required API credentials from command line prompts
:return: dictionary containing Duo Auth API ikey, skey and hostname strings
"""
ikey = _get_next_arg('Duo Auth API integration key ("DI..."): ')
skey = _get_next_arg('Duo Auth API integration secret key: ', secure=True)
host = _get_next_arg('Duo Auth API hostname ("api-....duosecurity.com"): ')
username = _get_next_arg('Duo Username: ')
return {"USERNAME": username, "IKEY": ikey, "SKEY": skey, "APIHOST": host}
def main():
"""Main program entry point"""
inputs = prompt_for_credentials()
auth_client = duo_client.Auth(
ikey=inputs['IKEY'],
skey=inputs['SKEY'],
host=inputs['APIHOST']
)
# Verify that the Duo service is available
duo_ping = auth_client.ping()
if 'time' in duo_ping:
print("\nDuo service check completed successfully.")
else:
print(f"Error: {duo_ping}")
# Verify that IKEY and SKEY information provided are valid
duo_check= auth_client.check()
if 'time' in duo_check:
print("IKEY and SKEY provided have been verified.")
else:
print(f"Error: {duo_check}")
# Execute pre-authentication for given user
print(f"\nExecuting pre-authentication for {inputs['USERNAME']}...")
pre_auth = auth_client.preauth(username=inputs['USERNAME'])
if pre_auth['result'] == "auth":
try:
print(f"Executing authentication action for {inputs['USERNAME']}...")
auth = auth_client.auth(factor="push", username=inputs['USERNAME'], device="auto", async_txn=True)
if 'txid' in auth:
waiting = True
# Collect the authentication result
print("Getting authentication result...")
# Repeat long polling for async authentication status until no longer in a 'waiting' state
while waiting is True:
# Poll Duo Auth API for the status of the async authentication based upon transaction ID
auth_status = auth_client.auth_status(auth['txid'])
print(f"Auth status: {auth_status}")
if auth_status['waiting'] is not True:
# Waiting for response too async authentication is no longer 'True', so break the loop
waiting = False
# Parse response for the 'status' dictionary key to determine whether to allow or deny
print(auth_status)
else:
# Some kind of unexpected error occurred
print(f"Error: an unknown error occurred attempting authentication for [{inputs['USERNAME']}]")
except Exception as e_str:
print(e_str)
else:
print(pre_auth['status_msg'])
if __name__ == '__main__':
main()
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