mirror of
https://git.ugnet.gay/CrossTalk/azul.git
synced 2026-05-27 22:59:49 +00:00
Athena Funderburg
108 lines
2.5 KiB
Python
108 lines
2.5 KiB
Python
import asyncio
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import struct
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import settings
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from core.backend import Backend
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from typing import Optional, Callable
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from util.misc import Logger, ProtocolRunner
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from .ctrl import OSCARCtrl
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from .proto.snac import SNACMessage
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def register(loop: asyncio.AbstractEventLoop, backend: Backend) -> None:
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backend.add_runner(ProtocolRunner('0.0.0.0', 5190, ListenerOSCAR, args=['OSCAR', backend, OSCARCtrl], service = 'OSCAR'))
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class ListenerOSCAR(asyncio.Protocol):
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logger: Logger
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backend: Backend
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controller: OSCARCtrl
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transport: Optional[asyncio.WriteTransport]
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buffer: bytes = b''
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def __init__(self,
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logger_prefix: str,
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backend: Backend,
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controller_factory: Callable[[Logger, str, Backend], OSCARCtrl]) -> None:
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super().__init__()
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self.logger = Logger(logger_prefix, self)
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self.backend = backend
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self.controller = controller_factory(self.logger, 'direct', backend)
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self.controller.close_callback = self._on_close
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self.transport = None
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def connection_made(self, transport: asyncio.BaseTransport) -> None:
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self.controller.transport = transport
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self.controller.on_connect()
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self.logger.log_connect()
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def connection_lost(self, exc: Optional[Exception]) -> None:
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self.controller.close()
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self.logger.log_disconnect()
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def data_received(self, packet: bytes) -> None:
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if self.backend.maintenance_mode:
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self.transport.close()
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return
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self.buffer += packet
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self.parse_buffer()
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def parse_buffer(self) -> None:
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while True:
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if self.controller.closed:
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self.buffer = b''
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break
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if self.buffer[0] != 0x2A:
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break
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# TODO(subpurple): Bufferize this?
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frame, sequence, length = struct.unpack('>BHH', self.buffer[1:6])
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if len(self.buffer) < length + 6:
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break
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if len(self.buffer) >= length + 6:
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data = self.buffer[6:length + 6]
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match frame:
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# SIGNON
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case 0x01:
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self.controller.on_signon_frame(data)
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# DATA (always contains a SNAC)
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case 0x02:
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if len(data) < 10:
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return
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msg = SNACMessage()
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msg.unmarshal(data)
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self.controller.on_data_frame(msg)
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# ERROR
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case 0x03:
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self.controller.on_error_frame(data)
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# SIGNOFF
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case 0x04:
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self.controller.on_signoff_frame(data)
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# KEEP_ALIVE
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case 0x05:
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pass
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case _:
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self.logger.info('Recieved unknown frame:', str(frame), 'with data:', data.hex())
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self.buffer = self.buffer[length + 6:]
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if len(self.buffer) < 6:
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break
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def _on_close(self) -> None:
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if self.transport is not None:
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self.transport.close() |