85 lines
2.3 KiB
Python
85 lines
2.3 KiB
Python
import enum
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import logging
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import socket
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from typing import Tuple
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import urllib.parse
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from proto import control_pb2
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LOGGER = logging.getLogger(__name__)
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# Uniquely identifies a datajack connection.
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# This indicates the handshake style expected and is used
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# to quickly and easily determine if the client is even speaking the
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# right protocol for the server.
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MAGIC = "e8437140-4347-48cc-a31d-dcdc944ffc15"
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# The list of formats supported by this client in descending order of preference
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# This is used for negotiation of the data format that will be used with the server.
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DATA_FORMATS = ",".join([
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"protobuf",
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"json",
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])
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# The types of access that are allowed with this connection
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class Permissions(enum.Enum):
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pass
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def _parse_netloc(netloc) -> Tuple[str, str, str, int]:
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app, _, connection = netloc.partition("@")
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appname, _, version = app.partition(":")
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host, _, part = connection.partition(":")
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return appname, version, host, part
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class Connection:
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def __init__(self, uri):
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parts = urllib.parse.urlparse(uri)
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print(parts)
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netloc = parts.netloc
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assert parts.scheme == "socket"
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self.app_name, self.app_version, self.host, self.port = _parse_netloc(netloc)
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self.namespace = parts.path.lstrip("/")
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self.public_key = "pretend_key"
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self.data_format = None
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self.address = None
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self.server_key = None
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def __enter__(self):
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self.connect()
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return self
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def __exit__(self, exc_typ, exc_val, exc_tb):
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pass
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def connect(self):
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self.socket = socket.socket()
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self.socket.connect((self.host, int(self.port)))
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self._handshake()
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def disconnect(self):
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pass
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def send(self, data):
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self.socket.send(data)
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def _handshake(self):
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"Handshake with the server, ensure we have all the data we need."
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fields = [MAGIC, DATA_FORMATS, self.namespace, self.app_name, self.app_version, self.public_key,]
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cliend_hand = " ".join(fields)
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self.socket.send(cliend_hand.encode("UTF-8"))
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server_hand = self.socket.recv(1024)
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if not server_hand:
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print("Failed to get server hand")
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self.data_format, self.address, self.server_key = server_hand.decode("UTF-8").split(" ")
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LOGGER.info("Data format: %s", self.data_format)
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command = control_pb2.Command(
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type=control_pb2.Command.Type.STATUS
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)
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to_send = command.SerializeToString()
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LOGGER.info("Sending '%s'", to_send)
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self.socket.send(to_send)
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def connection(uri) -> Connection:
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return Connection(uri)
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