mirror of
https://github.com/mofeng-git/One-KVM.git
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106 lines
4.3 KiB
Python
106 lines
4.3 KiB
Python
# ========================================================================== #
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# #
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# KVMD - The main PiKVM daemon. #
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# #
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# Copyright (C) 2018-2022 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 json
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import contextlib
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import argparse
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from typing import List
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from typing import Generator
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from typing import Optional
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from ...validators.basic import valid_stripped_string_not_empty
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from ... import env
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from ... import usb
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from .. import init
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# =====
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def _make_config_path(gadget: str, func: str) -> str:
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return os.path.join(f"{env.SYSFS_PREFIX}/sys/kernel/config/usb_gadget", gadget, "configs/c.1", func)
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def _make_func_path(gadget: str, func: str) -> str:
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return os.path.join(f"{env.SYSFS_PREFIX}/sys/kernel/config/usb_gadget", gadget, "functions", func)
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@contextlib.contextmanager
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def _udc_stopped(gadget: str, udc: str) -> Generator[None, None, None]:
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udc = usb.find_udc(udc)
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udc_path = os.path.join(f"{env.SYSFS_PREFIX}/sys/kernel/config/usb_gadget", gadget, "UDC")
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with open(udc_path) as udc_file:
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enabled = bool(udc_file.read().strip())
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with open(udc_path, "w") as udc_file:
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udc_file.write("\n")
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try:
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yield
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finally:
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if enabled:
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with open(udc_path, "w") as udc_file:
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udc_file.write(udc)
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def _enable_func(gadget: str, udc: str, func: str) -> None:
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with _udc_stopped(gadget, udc):
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os.symlink(_make_func_path(gadget, func), _make_config_path(gadget, func))
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def _disable_func(gadget: str, udc: str, func: str) -> None:
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with _udc_stopped(gadget, udc):
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os.unlink(_make_config_path(gadget, func))
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def _list_funcs(gadget: str, meta_path: str) -> None:
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for meta_name in sorted(os.listdir(meta_path)):
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with open(os.path.join(meta_path, meta_name)) as meta_file:
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meta = json.loads(meta_file.read())
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enabled = os.path.exists(_make_config_path(gadget, meta["func"]))
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print(f"{'+' if enabled else '-'} {meta['func']} # {meta['name']}")
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# =====
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def main(argv: Optional[List[str]]=None) -> None:
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(parent_parser, argv, config) = init(
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add_help=False,
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argv=argv,
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)
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parser = argparse.ArgumentParser(
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prog="kvmd-otgconf",
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description="KVMD OTG low-level runtime configuration tool",
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parents=[parent_parser],
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)
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parser.add_argument("-l", "--list-funcs", action="store_true", help="List functions")
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parser.add_argument("-e", "--enable-func", type=valid_stripped_string_not_empty, metavar="<name>", help="Enable function")
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parser.add_argument("-d", "--disable-func", type=valid_stripped_string_not_empty, metavar="<name>", help="Disable function")
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options = parser.parse_args(argv[1:])
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if options.enable_func:
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_enable_func(config.otg.gadget, config.otg.udc, options.enable_func)
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if options.disable_func:
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_disable_func(config.otg.gadget, config.otg.udc, options.disable_func)
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_list_funcs(config.otg.gadget, config.otg.meta)
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