mirror of
https://github.com/aljazceru/python-teos.git
synced 2025-12-17 06:04:21 +01:00
Adds register command to cli, modifies get_appointment to work with POST, refactors cli to improve modularity and cleaning the code
- Adds register command - Modifies get_appointment command to work with POST + adds signature - Avoids passing config dict to functions if not necessary (passing single parameters instead) - Moves key loading to main since most of the commands will need the keys now - Refactors post_appointment and process_post_appointment_request to work with any post request, so it can be reused for both register and get_appointment - Functions have been rearanged in a more logical order - Error handling has been improved
This commit is contained in:
Sergi Delgado Segura
491
cli/teos_cli.py
491
cli/teos_cli.py
@@ -22,12 +22,151 @@ from common.appointment import Appointment
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from common.config_loader import ConfigLoader
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from common.cryptographer import Cryptographer
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from common.tools import setup_logging, setup_data_folder
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from common.tools import check_sha256_hex_format, check_locator_format, compute_locator
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from common.tools import check_sha256_hex_format, check_locator_format, compute_locator, check_compressed_pk_format
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logger = Logger(actor="Client", log_name_prefix=LOG_PREFIX)
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common.cryptographer.logger = Logger(actor="Cryptographer", log_name_prefix=LOG_PREFIX)
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def register(compressed_pk, teos_url):
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if not check_compressed_pk_format(compressed_pk):
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logger.error("The cli public key is not valid")
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return False
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# Send request to the server.
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register_endpoint = "{}/register".format(teos_url)
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data = {"public_key": compressed_pk}
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logger.info("Registering in the Eye of Satoshi")
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server_response = post_request(data, register_endpoint)
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if server_response:
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response_json = process_post_response(server_response)
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return response_json
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def add_appointment(appointment_data, cli_sk, teos_pk, teos_url, appointments_folder_path):
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"""
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Manages the add_appointment command, from argument parsing, trough sending the appointment to the tower, until
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saving the appointment receipt.
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The life cycle of the function is as follows:
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- Check that the given commitment_txid is correct (proper format and not missing)
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- Check that the transaction is correct (not missing)
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- Create the appointment locator and encrypted blob from the commitment_txid and the penalty_tx
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- Sign the appointment
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- Send the appointment to the tower
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- Wait for the response
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- Check the tower's response and signature
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- Store the receipt (appointment + signature) on disk
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If any of the above-mentioned steps fails, the method returns false, otherwise it returns true.
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Args:
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appointment_data (:obj:`dict`): a dictionary containing the appointment data.
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cli_sk (:obj:`PrivateKey`): the client's private key.
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teos_pk (:obj:`PublicKey`): the tower's public key.
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teos_url (:obj:`str`): the teos base url.
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appointments_folder_path (:obj:`str`): the path to the appointments folder.
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Returns:
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:obj:`bool`: True if the appointment is accepted by the tower and the receipt is properly stored, false if any
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error occurs during the process.
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"""
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if appointment_data is None:
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logger.error("The provided appointment JSON is empty")
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return False
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if not check_sha256_hex_format(appointment_data.get("tx_id")):
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logger.error("The provided txid is not valid")
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return False
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tx_id = appointment_data.get("tx_id")
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tx = appointment_data.get("tx")
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if None not in [tx_id, tx]:
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appointment_data["locator"] = compute_locator(tx_id)
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appointment_data["encrypted_blob"] = Cryptographer.encrypt(Blob(tx), tx_id)
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else:
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logger.error("Appointment data is missing some fields")
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return False
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appointment = Appointment.from_dict(appointment_data)
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signature = Cryptographer.sign(appointment.serialize(), cli_sk)
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if not (appointment and signature):
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return False
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data = {"appointment": appointment.to_dict(), "signature": signature}
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# Send appointment to the server.
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add_appointment_endpoint = "{}/add_appointment".format(teos_url)
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logger.info("Sending appointment to the Eye of Satoshi")
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server_response = post_request(data, add_appointment_endpoint)
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if server_response is None:
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return False
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response_json = process_post_response(server_response)
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if response_json is None:
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return False
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signature = response_json.get("signature")
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# Check that the server signed the appointment as it should.
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if signature is None:
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logger.error("The response does not contain the signature of the appointment")
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return False
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rpk = Cryptographer.recover_pk(appointment.serialize(), signature)
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if not Cryptographer.verify_rpk(teos_pk, rpk):
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logger.error("The returned appointment's signature is invalid")
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return False
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logger.info("Appointment accepted and signed by the Eye of Satoshi")
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logger.info("Remaining slots: {}".format(response_json.get("available_slots")))
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# All good, store appointment and signature
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return save_appointment_receipt(appointment.to_dict(), signature, appointments_folder_path)
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def get_appointment(locator, cli_sk, teos_pk, teos_url):
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"""
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Gets information about an appointment from the tower.
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Args:
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locator (:obj:`str`): the appointment locator used to identify it.
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cli_sk (:obj:`PrivateKey`): the client's private key.
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teos_pk (:obj:`PublicKey`): the tower's public key.
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teos_url (:obj:`str`): the teos base url.
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Returns:
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:obj:`dict` or :obj:`None`: a dictionary containing thew appointment data if the locator is valid and the tower
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responds. ``None`` otherwise.
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"""
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# FIXME: All responses from the tower should be signed. Not using teos_pk atm.
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valid_locator = check_locator_format(locator)
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if not valid_locator:
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logger.error("The provided locator is not valid", locator=locator)
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return None
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message = "get appointment {}".format(locator)
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signature = Cryptographer.sign(message.encode(), cli_sk)
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data = {"locator": locator, "signature": signature}
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# Send request to the server.
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get_appointment_endpoint = "{}/get_appointment".format(teos_url)
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logger.info("Sending appointment to the Eye of Satoshi")
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server_response = post_request(data, get_appointment_endpoint)
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response_json = process_post_response(server_response)
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return response_json
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def load_keys(teos_pk_path, cli_sk_path, cli_pk_path):
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"""
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Loads all the keys required so sign, send, and verify the appointment.
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@@ -71,115 +210,77 @@ def load_keys(teos_pk_path, cli_sk_path, cli_pk_path):
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try:
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cli_pk_der = Cryptographer.load_key_file(cli_pk_path)
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PublicKey(cli_pk_der)
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compressed_cli_pk = Cryptographer.get_compressed_pk(PublicKey(cli_pk_der))
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except ValueError:
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logger.error("Client public key is invalid or cannot be parsed")
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return None
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return teos_pk, cli_sk, cli_pk_der
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return teos_pk, cli_sk, compressed_cli_pk
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def add_appointment(args, teos_url, config):
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def post_request(data, endpoint):
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"""
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Manages the add_appointment command, from argument parsing, trough sending the appointment to the tower, until
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saving the appointment receipt.
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The life cycle of the function is as follows:
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- Load the add_appointment arguments
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- Check that the given commitment_txid is correct (proper format and not missing)
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- Check that the transaction is correct (not missing)
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- Create the appointment locator and encrypted blob from the commitment_txid and the penalty_tx
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- Load the client private key and sign the appointment
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- Send the appointment to the tower
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- Wait for the response
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- Check the tower's response and signature
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- Store the receipt (appointment + signature) on disk
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If any of the above-mentioned steps fails, the method returns false, otherwise it returns true.
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Sends a post request to the tower.
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Args:
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args (:obj:`list`): a list of arguments to pass to ``parse_add_appointment_args``. Must contain a json encoded
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appointment, or the file option and the path to a file containing a json encoded appointment.
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teos_url (:obj:`str`): the teos base url.
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config (:obj:`dict`): a config dictionary following the format of :func:`create_config_dict <common.config_loader.ConfigLoader.create_config_dict>`.
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data (:obj:`dict`): a dictionary containing the data to be posted.
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endpoint (:obj:`str`): the endpoint to send the post request.
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Returns:
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:obj:`bool`: True if the appointment is accepted by the tower and the receipt is properly stored, false if any
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error occurs during the process.
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:obj:`dict` or ``None``: a json-encoded dictionary with the server response if the data can be posted.
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None otherwise.
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"""
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teos_pk, cli_sk, cli_pk_der = load_keys(
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config.get("TEOS_PUBLIC_KEY"), config.get("CLI_PRIVATE_KEY"), config.get("CLI_PUBLIC_KEY")
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)
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try:
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return requests.post(url=endpoint, json=data, timeout=5)
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except ConnectTimeout:
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logger.error("Can't connect to the Eye of Satoshi's API. Connection timeout")
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except ConnectionError:
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logger.error("Can't connect to the Eye of Satoshi's API. Server cannot be reached")
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except (InvalidSchema, MissingSchema, InvalidURL):
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logger.error("Invalid URL. No schema, or invalid schema, found ({})".format(endpoint))
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except requests.exceptions.Timeout:
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logger.error("The request timed out")
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return None
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def process_post_response(response):
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"""
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Processes the server response to an post request.
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Args:
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response (:obj:`requests.models.Response`): a ``Response`` object obtained from the sent request.
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Returns:
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:obj:`dict` or :obj:`None`: a dictionary containing the tower's response data if it can be properly parsed and
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the response type is ``HTTP_OK``. ``None`` otherwise.
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"""
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if not response:
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return None
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try:
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hex_pk_der = binascii.hexlify(cli_pk_der)
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response_json = response.json()
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except binascii.Error as e:
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logger.error("Could not successfully encode public key as hex", error=str(e))
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return False
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except (json.JSONDecodeError, AttributeError):
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logger.error(
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"The server returned a non-JSON response", status_code=response.status_code, reason=response.reason
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)
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return None
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if teos_pk is None:
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return False
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if response.status_code != constants.HTTP_OK:
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logger.error(
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"The server returned an error", status_code=response.status_code, reason=response.reason, data=response_json
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)
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return None
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# Get appointment data from user.
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appointment_data = parse_add_appointment_args(args)
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if appointment_data is None:
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logger.error("The provided appointment JSON is empty")
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return False
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valid_txid = check_sha256_hex_format(appointment_data.get("tx_id"))
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if not valid_txid:
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logger.error("The provided txid is not valid")
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return False
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tx_id = appointment_data.get("tx_id")
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tx = appointment_data.get("tx")
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if None not in [tx_id, tx]:
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appointment_data["locator"] = compute_locator(tx_id)
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appointment_data["encrypted_blob"] = Cryptographer.encrypt(Blob(tx), tx_id)
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else:
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logger.error("Appointment data is missing some fields")
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return False
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appointment = Appointment.from_dict(appointment_data)
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signature = Cryptographer.sign(appointment.serialize(), cli_sk)
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if not (appointment and signature):
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return False
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data = {"appointment": appointment.to_dict(), "signature": signature, "public_key": hex_pk_der.decode("utf-8")}
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# Send appointment to the server.
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server_response = post_appointment(data, teos_url)
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if server_response is None:
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return False
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response_json = process_post_appointment_response(server_response)
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if response_json is None:
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return False
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signature = response_json.get("signature")
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# Check that the server signed the appointment as it should.
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if signature is None:
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logger.error("The response does not contain the signature of the appointment")
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return False
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rpk = Cryptographer.recover_pk(appointment.serialize(), signature)
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if not Cryptographer.verify_rpk(teos_pk, rpk):
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logger.error("The returned appointment's signature is invalid")
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return False
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logger.info("Appointment accepted and signed by the Eye of Satoshi")
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# All good, store appointment and signature
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return save_appointment_receipt(appointment.to_dict(), signature, config)
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return response_json
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def parse_add_appointment_args(args):
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@@ -230,88 +331,14 @@ def parse_add_appointment_args(args):
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return appointment_data
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def post_appointment(data, teos_url):
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"""
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Sends appointment data to add_appointment endpoint to be processed by the tower.
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Args:
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data (:obj:`dict`): a dictionary containing three fields: an appointment, the client-side signature, and the
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der-encoded client public key.
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teos_url (:obj:`str`): the teos base url.
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Returns:
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:obj:`dict` or ``None``: a json-encoded dictionary with the server response if the data can be posted.
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None otherwise.
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"""
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add_appointment_endpoint = "{}/add_appointment".format(teos_url)
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logger.info("Sending appointment to the Eye of Satoshi")
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try:
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return requests.post(url=add_appointment_endpoint, json=data, timeout=5)
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except ConnectTimeout:
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logger.error("Can't connect to the Eye of Satoshi's API. Connection timeout")
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return None
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except ConnectionError:
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logger.error("Can't connect to the Eye of Satoshi's API. Server cannot be reached")
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return None
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except (InvalidSchema, MissingSchema, InvalidURL):
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logger.error("Invalid URL. No schema, or invalid schema, found ({})".format(add_appointment_endpoint))
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except requests.exceptions.Timeout:
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logger.error("The request timed out")
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def process_post_appointment_response(response):
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"""
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Processes the server response to an add_appointment request.
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Args:
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response (:obj:`requests.models.Response`): a ``Response`` object obtained from the sent request.
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Returns:
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:obj:`dict` or :obj:`None`: a dictionary containing the tower's response data if it can be properly parsed and
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the response type is ``HTTP_OK``. ``None`` otherwise.
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"""
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try:
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response_json = response.json()
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except json.JSONDecodeError:
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logger.error(
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"The server returned a non-JSON response", status_code=response.status_code, reason=response.reason
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)
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return None
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if response.status_code != constants.HTTP_OK:
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if "error" not in response_json:
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logger.error(
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"The server returned an error status code but no error description", status_code=response.status_code
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)
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else:
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error = response_json["error"]
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logger.error(
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"The server returned an error status code with an error description",
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status_code=response.status_code,
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description=error,
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)
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return None
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return response_json
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def save_appointment_receipt(appointment, signature, config):
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def save_appointment_receipt(appointment, signature, appointments_folder_path):
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"""
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Saves an appointment receipt to disk. A receipt consists in an appointment and a signature from the tower.
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Args:
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appointment (:obj:`Appointment <common.appointment.Appointment>`): the appointment to be saved on disk.
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signature (:obj:`str`): the signature of the appointment performed by the tower.
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config (:obj:`dict`): a config dictionary following the format of :func:`create_config_dict <common.config_loader.ConfigLoader.create_config_dict>`.
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appointments_folder_path (:obj:`str`): the path to the appointments folder.
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Returns:
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:obj:`bool`: True if the appointment if properly saved, false otherwise.
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@@ -321,13 +348,13 @@ def save_appointment_receipt(appointment, signature, config):
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"""
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# Create the appointments directory if it doesn't already exist
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os.makedirs(config.get("APPOINTMENTS_FOLDER_NAME"), exist_ok=True)
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os.makedirs(appointments_folder_path, exist_ok=True)
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timestamp = int(time.time())
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locator = appointment["locator"]
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uuid = uuid4().hex # prevent filename collisions
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filename = "{}/appointment-{}-{}-{}.json".format(config.get("APPOINTMENTS_FOLDER_NAME"), timestamp, locator, uuid)
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filename = "{}/appointment-{}-{}-{}.json".format(appointments_folder_path, timestamp, locator, uuid)
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data = {"appointment": appointment, "signature": signature}
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try:
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@@ -341,45 +368,6 @@ def save_appointment_receipt(appointment, signature, config):
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return False
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def get_appointment(locator, teos_url):
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"""
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Gets information about an appointment from the tower.
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|
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Args:
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locator (:obj:`str`): the appointment locator used to identify it.
|
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teos_url (:obj:`str`): the teos base url.
|
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|
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Returns:
|
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:obj:`dict` or :obj:`None`: a dictionary containing thew appointment data if the locator is valid and the tower
|
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responds. ``None`` otherwise.
|
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"""
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get_appointment_endpoint = "{}/get_appointment".format(teos_url)
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valid_locator = check_locator_format(locator)
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if not valid_locator:
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logger.error("The provided locator is not valid", locator=locator)
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return None
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try:
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r = requests.get(url="{}?locator={}".format(get_appointment_endpoint, locator), timeout=5)
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return r.json()
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except ConnectTimeout:
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logger.error("Can't connect to the Eye of Satoshi's API. Connection timeout")
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return None
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except ConnectionError:
|
||||
logger.error("Can't connect to the Eye of Satoshi's API. Server cannot be reached")
|
||||
return None
|
||||
|
||||
except requests.exceptions.InvalidSchema:
|
||||
logger.error("No transport protocol found. Have you missed http(s):// in the server url?")
|
||||
|
||||
except requests.exceptions.Timeout:
|
||||
logger.error("The request timed out")
|
||||
|
||||
|
||||
def main(args, command_line_conf):
|
||||
# Loads config and sets up the data folder and log file
|
||||
config_loader = ConfigLoader(DATA_DIR, CONF_FILE_NAME, DEFAULT_CONF, command_line_conf)
|
||||
@@ -394,57 +382,70 @@ def main(args, command_line_conf):
|
||||
if not teos_url.startswith("http"):
|
||||
teos_url = "http://" + teos_url
|
||||
|
||||
try:
|
||||
if args:
|
||||
command = args.pop(0)
|
||||
keys = load_keys(config.get("TEOS_PUBLIC_KEY"), config.get("CLI_PRIVATE_KEY"), config.get("CLI_PUBLIC_KEY"))
|
||||
if keys is not None:
|
||||
teos_pk, cli_sk, compress_cli_pk = keys
|
||||
|
||||
if command in commands:
|
||||
if command == "add_appointment":
|
||||
add_appointment(args, teos_url, config)
|
||||
try:
|
||||
if args:
|
||||
command = args.pop(0)
|
||||
|
||||
elif command == "get_appointment":
|
||||
if not args:
|
||||
logger.error("No arguments were given")
|
||||
if command in commands:
|
||||
if command == "register":
|
||||
register_data = register(compress_cli_pk, teos_url)
|
||||
if register_data:
|
||||
print(register_data)
|
||||
|
||||
else:
|
||||
arg_opt = args.pop(0)
|
||||
if command == "add_appointment":
|
||||
# Get appointment data from user.
|
||||
appointment_data = parse_add_appointment_args(args)
|
||||
add_appointment(
|
||||
appointment_data, cli_sk, teos_pk, teos_url, config.get("APPOINTMENTS_FOLDER_NAME")
|
||||
)
|
||||
|
||||
if arg_opt in ["-h", "--help"]:
|
||||
sys.exit(help_get_appointment())
|
||||
|
||||
appointment_data = get_appointment(arg_opt, teos_url)
|
||||
if appointment_data:
|
||||
print(appointment_data)
|
||||
|
||||
elif command == "help":
|
||||
if args:
|
||||
command = args.pop(0)
|
||||
|
||||
if command == "add_appointment":
|
||||
sys.exit(help_add_appointment())
|
||||
|
||||
elif command == "get_appointment":
|
||||
sys.exit(help_get_appointment())
|
||||
elif command == "get_appointment":
|
||||
if not args:
|
||||
logger.error("No arguments were given")
|
||||
|
||||
else:
|
||||
logger.error("Unknown command. Use help to check the list of available commands")
|
||||
arg_opt = args.pop(0)
|
||||
|
||||
else:
|
||||
sys.exit(show_usage())
|
||||
if arg_opt in ["-h", "--help"]:
|
||||
sys.exit(help_get_appointment())
|
||||
|
||||
appointment_data = get_appointment(arg_opt, cli_sk, teos_pk, teos_url)
|
||||
if appointment_data:
|
||||
print(appointment_data)
|
||||
|
||||
elif command == "help":
|
||||
if args:
|
||||
command = args.pop(0)
|
||||
|
||||
if command == "add_appointment":
|
||||
sys.exit(help_add_appointment())
|
||||
|
||||
elif command == "get_appointment":
|
||||
sys.exit(help_get_appointment())
|
||||
|
||||
else:
|
||||
logger.error("Unknown command. Use help to check the list of available commands")
|
||||
|
||||
else:
|
||||
sys.exit(show_usage())
|
||||
|
||||
else:
|
||||
logger.error("Unknown command. Use help to check the list of available commands")
|
||||
|
||||
else:
|
||||
logger.error("Unknown command. Use help to check the list of available commands")
|
||||
logger.error("No command provided. Use help to check the list of available commands")
|
||||
|
||||
else:
|
||||
logger.error("No command provided. Use help to check the list of available commands")
|
||||
|
||||
except json.JSONDecodeError:
|
||||
logger.error("Non-JSON encoded appointment passed as parameter")
|
||||
except json.JSONDecodeError:
|
||||
logger.error("Non-JSON encoded appointment passed as parameter")
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
command_line_conf = {}
|
||||
commands = ["add_appointment", "get_appointment", "help"]
|
||||
commands = ["register", "add_appointment", "get_appointment", "help"]
|
||||
|
||||
try:
|
||||
opts, args = getopt(argv[1:], "s:p:h", ["server", "port", "help"])
|
||||
|
||||
Reference in New Issue
Block a user