mirror of
https://github.com/mofeng-git/One-KVM.git
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99 lines
3.5 KiB
Python
99 lines
3.5 KiB
Python
# ========================================================================== #
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# #
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# KVMD - The main Pi-KVM daemon. #
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# #
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# Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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# ========================================================================== #
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import os
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import contextlib
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from typing import Dict
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from typing import Generator
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from typing import Any
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import serial
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from ...yamlconf import Option
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from ...validators.basic import valid_float_f01
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from ...validators.os import valid_abs_path
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from ...validators.hw import valid_tty_speed
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from ._mcu import BasePhyConnection
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from ._mcu import BasePhy
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from ._mcu import BaseMcuHid
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# =====
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class _SerialPhyConnection(BasePhyConnection):
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def __init__(self, tty: serial.Serial) -> None:
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self.__tty = tty
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def send(self, request: bytes, receive: int) -> bytes:
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if self.__tty.in_waiting:
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self.__tty.read_all()
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assert self.__tty.write(request) == len(request)
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return self.__tty.read(receive)
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class _SerialPhy(BasePhy):
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def __init__(
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self,
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device_path: str,
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speed: int,
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read_timeout: float,
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) -> None:
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self.__device_path = device_path
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self.__speed = speed
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self.__read_timeout = read_timeout
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def has_device(self) -> bool:
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return os.path.exists(self.__device_path)
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@contextlib.contextmanager
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def connected(self) -> Generator[_SerialPhyConnection, None, None]: # type: ignore
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with serial.Serial(self.__device_path, self.__speed, timeout=self.__read_timeout) as tty:
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yield _SerialPhyConnection(tty)
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# =====
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class Plugin(BaseMcuHid):
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def __init__(
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self,
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device_path: str,
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speed: int,
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read_timeout: float,
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**kwargs: Any,
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) -> None:
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super().__init__(
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phy=_SerialPhy(device_path, speed, read_timeout),
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**kwargs,
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)
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@classmethod
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def get_plugin_options(cls) -> Dict:
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return {
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"device": Option("", type=valid_abs_path, unpack_as="device_path"),
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"speed": Option(115200, type=valid_tty_speed),
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"read_timeout": Option(2.0, type=valid_float_f01),
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**BaseMcuHid.get_plugin_options(),
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}
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