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98 lines
2.9 KiB
98 lines
2.9 KiB
"""Synchronous client."""
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from socket import socket
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from typing import Optional
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from rcon.exceptions import RequestIdMismatch, WrongPassword
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from rcon.proto import Packet, Type
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__all__ = ['Client']
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class Client:
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"""An RCON client."""
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__slots__ = ('_socket', 'host', 'port', 'passwd')
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def __init__(
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self, host: str, port: int, *,
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timeout: Optional[float] = None,
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passwd: Optional[str] = None
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):
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"""Initializes the base client with the SOCK_STREAM socket type."""
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self._socket = socket()
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self.host = host
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self.port = port
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self.timeout = timeout
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self.passwd = passwd
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def __enter__(self):
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"""Attempts an auto-login if a password is set."""
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self._socket.__enter__()
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self.connect(login=True)
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return self
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def __exit__(self, typ, value, traceback):
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"""Delegates to the underlying socket's exit method."""
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return self._socket.__exit__(typ, value, traceback)
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@property
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def timeout(self) -> float:
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"""Returns the socket timeout."""
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return self._socket.gettimeout()
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@timeout.setter
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def timeout(self, timeout: float):
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"""Sets the socket timeout."""
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self._socket.settimeout(timeout)
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def connect(self, login: bool = False) -> None:
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"""Connects the socket and attempts a
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login if wanted and a password is set.
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"""
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self._socket.connect((self.host, self.port))
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if login and self.passwd is not None:
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self.login(self.passwd)
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def close(self) -> None:
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"""Closes the socket connection."""
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self._socket.close()
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def communicate(self, packet: Packet) -> Packet:
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"""Sends and receives a packet."""
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with self._socket.makefile('wb') as file:
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file.write(bytes(packet))
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return self.read()
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def read(self) -> Packet:
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"""Reads a packet."""
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with self._socket.makefile('rb') as file:
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return Packet.read(file)
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def login(self, passwd: str, *, encoding: str = 'utf-8') -> bool:
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"""Performs a login."""
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request = Packet.make_login(passwd, encoding=encoding)
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response = self.communicate(request)
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# Wait for SERVERDATA_AUTH_RESPONSE according to:
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# https://developer.valvesoftware.com/wiki/Source_RCON_Protocol
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while response.type != Type.SERVERDATA_AUTH_RESPONSE:
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response = self.read()
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if response.id == -1:
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raise WrongPassword()
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return True
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def run(self, command: str, *args: str, encoding: str = 'utf-8') -> str:
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"""Runs a command."""
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request = Packet.make_command(command, *args, encoding=encoding)
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response = self.communicate(request)
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if response.id != request.id:
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raise RequestIdMismatch(request.id, response.id)
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return response.payload.decode(encoding)
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