import argparse

import base64

import json

import sys

def decode_token(token):

"""Decodes an authentication token.

Args:

token: The authentication token to decode (base64 encoded).

Returns:

A dictionary containing the decoded token data, or None if decoding fails.

"""

try:

decoded_bytes = base64.b64decode(token)

decoded_str = decoded_bytes.decode('utf-8')

return json.loads(decoded_str)

except (base64.binascii.Error, json.JSONDecodeError):

return None

def main():

"""Main function to handle CLI arguments and decode tokens."""

parser = argparse.ArgumentParser(description="Decode authentication tokens for monitoring.")

parser.add_argument("token", help="The authentication token to decode.")

args = parser.parse_args()

decoded_token = decode_token(args.token)

if decoded_token:

print(json.dumps(decoded_token, indent=4)) # Pretty print the JSON

else:

print("Decoding failed. Invalid token format.")

sys.exit(1)

if __name__ == "__main__":

main()