mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 17:20:30 +08:00
207 lines
8.2 KiB
Python
207 lines
8.2 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 re
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import time
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import argparse
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from os import listdir
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from os import mkdir
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from os import symlink
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from os import rmdir
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from os import unlink
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from os.path import join
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from typing import List
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from typing import Optional
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from ...yamlconf import Section
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from ...validators import ValidatorError
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from .. import init
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# =====
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def _write(path: str, text: str) -> None:
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with open(path, "w") as param_file:
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param_file.write(text)
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def _find_udc(udc: str) -> str:
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udcs = sorted(listdir("/sys/class/udc"))
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if not udc:
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if len(udcs) == 0:
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raise RuntimeError("Can't find any UDC")
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udc = udcs[0]
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elif udc not in udcs:
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raise RuntimeError(f"Can't find selected UDC: {udc}")
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return udc
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def _check_config(config: Section) -> None:
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if (
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not config.otg.acm.enabled
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and config.kvmd.hid.type != "otg"
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and config.kvmd.msd.type != "otg"
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):
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raise RuntimeError("Nothing to do")
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def _cmd_start(config: Section) -> None: # pylint: disable=too-many-statements
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# https://www.kernel.org/doc/Documentation/usb/gadget_configfs.txt
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# https://www.isticktoit.net/?p=1383
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_check_config(config)
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udc = _find_udc(config.otg.udc)
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gadget_path = join("/sys/kernel/config/usb_gadget", config.otg.gadget)
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mkdir(gadget_path)
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_write(join(gadget_path, "idVendor"), f"0x{config.otg.vendor_id:X}")
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_write(join(gadget_path, "idProduct"), f"0x{config.otg.product_id:X}")
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_write(join(gadget_path, "bcdDevice"), "0x0100")
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_write(join(gadget_path, "bcdUSB"), "0x0200")
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lang_path = join(gadget_path, "strings/0x409")
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mkdir(lang_path)
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_write(join(lang_path, "manufacturer"), config.otg.manufacturer)
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_write(join(lang_path, "product"), config.otg.product)
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_write(join(lang_path, "serialnumber"), config.otg.serial_number)
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config_path = join(gadget_path, "configs/c.1")
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mkdir(config_path)
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mkdir(join(config_path, "strings/0x409"))
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_write(join(config_path, "strings/0x409/configuration"), "Config 1: ECM network")
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_write(join(config_path, "MaxPower"), "250")
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if config.otg.acm.enabled:
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func_path = join(gadget_path, "functions/acm.usb0")
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mkdir(func_path)
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symlink(func_path, join(config_path, "acm.usb0"))
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if config.kvmd.hid.type == "otg":
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func_path = join(gadget_path, "functions/hid.usb0") # Keyboard
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mkdir(func_path)
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_write(join(func_path, "protocol"), "1")
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_write(join(func_path, "subclass"), "1")
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_write(join(func_path, "report_length"), "8")
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with open(join(func_path, "report_desc"), "wb") as report_file:
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report_file.write(
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b"\x05\x01\x09\x06\xa1\x01\x05\x07\x19\xe0\x29\xe7\x15\x00"
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b"\x25\x01\x75\x01\x95\x08\x81\x02\x95\x01\x75\x08\x81\x03"
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b"\x95\x05\x75\x01\x05\x08\x19\x01\x29\x05\x91\x02\x95\x01"
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b"\x75\x03\x91\x03\x95\x06\x75\x08\x15\x00\x25\x65\x05\x07"
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b"\x19\x00\x29\x65\x81\x00\xc0"
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)
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symlink(func_path, join(config_path, "hid.usb0"))
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# https://github.com/NicoHood/HID/blob/0835e6a/src/SingleReport/SingleAbsoluteMouse.cpp
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# Репорт взят отсюда ^^^, но изменен диапазон значений координат перемещений.
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# Автор предлагает использовать -32768...32767, но семерка почему-то не хочет работать
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# с отрицательными значениями координат, как не хочет хавать 65536 и 32768.
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# Так что мы ей скармливаем диапазон 0...32767, и передаем рукожопам из микрософта привет,
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# потому что линуксы прекрасно работают с любыми двухбайтовыми диапазонами.
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func_path = join(gadget_path, "functions/hid.usb1") # Mouse
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mkdir(func_path)
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_write(join(func_path, "protocol"), "0")
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_write(join(func_path, "subclass"), "0")
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_write(join(func_path, "report_length"), "6")
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with open(join(func_path, "report_desc"), "wb") as report_file:
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report_file.write(
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b"\x05\x01\x09\x02\xA1\x01\x05\x09\x19\x01\x29\x08"
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b"\x15\x00\x25\x01\x95\x08\x75\x01\x81\x02\x05\x01\x09\x30"
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b"\x09\x31\x16\x00\x00\x26\xFF\x7F\x75\x10\x95\x02\x81\x02"
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b"\x09\x38\x15\x81\x25\x7f\x75\x08\x95\x01\x81\x06\xc0"
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)
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symlink(func_path, join(config_path, "hid.usb1"))
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if config.kvmd.msd.type == "otg":
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func_path = join(gadget_path, "functions/mass_storage.usb0")
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mkdir(func_path)
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_write(join(func_path, "stall"), "0")
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_write(join(func_path, "lun.0/cdrom"), "1")
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_write(join(func_path, "lun.0/ro"), "1")
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_write(join(func_path, "lun.0/removable"), "1")
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_write(join(func_path, "lun.0/nofua"), "0")
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symlink(func_path, join(config_path, "mass_storage.usb0"))
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_write(join(gadget_path, "UDC"), udc)
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time.sleep(config.otg.init_delay)
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def _cmd_stop(config: Section) -> None:
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# https://www.kernel.org/doc/Documentation/usb/gadget_configfs.txt
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_check_config(config)
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gadget_path = join("/sys/kernel/config/usb_gadget", config.otg.gadget)
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_write(join(gadget_path, "UDC"), "")
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config_path = join(gadget_path, "configs/c.1")
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for func in listdir(config_path):
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if re.search(r"\.usb\d+$", func):
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unlink(join(config_path, func))
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rmdir(join(config_path, "strings/0x409"))
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rmdir(config_path)
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funcs_path = join(gadget_path, "functions")
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for func in listdir(funcs_path):
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if re.search(r"\.usb\d+$", func):
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rmdir(join(funcs_path, func))
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rmdir(join(gadget_path, "strings/0x409"))
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rmdir(gadget_path)
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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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load_hid=True,
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load_atx=True,
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load_msd=True,
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)
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parser = argparse.ArgumentParser(
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prog="kvmd-otg",
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description="Control KVMD OTG device",
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parents=[parent_parser],
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)
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parser.set_defaults(cmd=(lambda *_: parser.print_help()))
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subparsers = parser.add_subparsers()
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cmd_start_parser = subparsers.add_parser("start", help="Start OTG")
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cmd_start_parser.set_defaults(cmd=_cmd_start)
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cmd_stop_parser = subparsers.add_parser("stop", help="Stop OTG")
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cmd_stop_parser.set_defaults(cmd=_cmd_stop)
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options = parser.parse_args(argv[1:])
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try:
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options.cmd(config)
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except ValidatorError as err:
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raise SystemExit(str(err))
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