1. import argparse
  2. import jwt
  3. import time
  5. def validate_token(token, secret):
  6. """
  7. Validates an authentication token.
  9. Args:
  10. token (str): The authentication token to validate.
  11. secret (str): The secret key used to sign the token.
  13. Returns:
  14. dict: A dictionary containing the decoded token data if valid,
  15. None otherwise.
  16. """
  17. try:
  18. # Decode the token
  19. decoded_token = jwt.decode(token, secret, algorithms=["HS256"])
  20. return decoded_token
  21. except jwt.ExpiredSignatureError:
  22. print("Token has expired.")
  23. return None
  24. except jwt.InvalidTokenError:
  25. print("Invalid token.")
  26. return None
  27. except jwt.DecodeError:
  28. print("Could not decode token.")
  29. return None
  30. except Exception as e:
  31. print(f"An unexpected error occurred: {e}")
  32. return None
  34. if __name__ == "__main__":
  35. parser = argparse.ArgumentParser(description="Validate authentication tokens.")
  36. parser.add_argument("token", help="The authentication token to validate.")
  37. parser.add_argument("secret", help="The secret key used to sign the token.")
  38. args = parser.parse_args()
  40. # Validate the token
  41. decoded_token = validate_token(args.token, args.secret)
  43. if decoded_token:
  44. print("Token is valid.")
  45. print(f"Decoded token: {decoded_token}")
  46. else:
  47. print("Token is invalid.")

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