mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 17:20:30 +08:00
140 lines
4.9 KiB
Python
140 lines
4.9 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 signal
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import time
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from typing import List
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from typing import Optional
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import psutil
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from ...logging import get_logger
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from ...yamlconf import Section
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from ... import gpio
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from .. import init
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# =====
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def _clear_gpio(config: Section) -> None:
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logger = get_logger(0)
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with gpio.bcm():
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for (name, pin) in [
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*([
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("hid_serial/reset", config.hid.reset_pin),
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] if config.hid.type == "serial" else []),
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*([
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("atx_gpio/power_switch", config.atx.power_switch_pin),
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("atx_gpio/reset_switch", config.atx.reset_switch_pin),
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] if config.atx.type == "gpio" else []),
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*([
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("msd_relay/target", config.msd.target_pin),
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("msd_relay/reset", config.msd.reset_pin),
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] if config.msd.type == "relay" else []),
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("streamer/cap", config.streamer.cap_pin),
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("streamer/conv", config.streamer.conv_pin),
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# *([
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# (f"gpio/{channel}", params.pin)
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# for (channel, params) in config.gpio.scheme.items()
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# if params.mode == "output"
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# ]),
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]:
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if pin >= 0:
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logger.info("Writing 0 to GPIO pin=%d (%s)", pin, name)
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try:
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gpio.set_output(pin, False)
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except Exception:
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logger.exception("Can't clear GPIO pin=%d (%s)", pin, name)
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def _kill_streamer(config: Section) -> None:
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logger = get_logger(0)
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if config.streamer.process_name_prefix:
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prefix = config.streamer.process_name_prefix + ":"
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logger.info("Trying to find and kill the streamer %r ...", prefix + " <app>")
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for proc in psutil.process_iter():
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attrs = proc.as_dict(attrs=["name"])
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if attrs.get("name", "").startswith(prefix):
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try:
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proc.send_signal(signal.SIGTERM)
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except Exception:
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logger.exception("Can't send SIGTERM to streamer with pid=%d", proc.pid)
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time.sleep(3)
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if proc.is_running():
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try:
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proc.send_signal(signal.SIGKILL)
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except Exception:
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logger.exception("Can't send SIGKILL to streamer with pid=%d", proc.pid)
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def _remove_sockets(config: Section) -> None:
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logger = get_logger(0)
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for (owner, unix_path) in [
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("KVMD", config.server.unix),
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("streamer", config.streamer.unix),
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]:
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if unix_path and os.path.exists(unix_path):
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logger.info("Removing %s socket %r ...", owner, unix_path)
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try:
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os.remove(unix_path)
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except Exception: # pragma: nocover
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logger.exception("Can't remove %s socket %r", owner, unix_path)
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# =====
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def main(argv: Optional[List[str]]=None) -> None:
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config = init(
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prog="kvmd-cleanup",
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description="Kill KVMD and clear resources",
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argv=argv,
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load_hid=True,
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load_atx=True,
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load_msd=True,
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load_gpio=True,
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)[2].kvmd
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logger = get_logger(0)
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logger.info("Cleaning up ...")
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for method in [
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_clear_gpio,
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_kill_streamer,
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_remove_sockets,
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]:
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try:
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method(config)
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except Exception:
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pass
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logger.info("Bye-bye")
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