mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 01:00:29 +08:00
94 lines
3.9 KiB
Python
94 lines
3.9 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) 2020 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 AsyncGenerator
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import aiohttp
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from .. import htclient
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from .. import htserver
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# =====
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class PstError(Exception):
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pass
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# =====
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class PstClient:
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def __init__(
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self,
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subdir: str,
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unix_path: str,
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timeout: float,
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user_agent: str,
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) -> None:
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self.__subdir = subdir
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self.__unix_path = unix_path
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self.__timeout = timeout
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self.__user_agent = user_agent
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async def get_path(self) -> str:
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async with self.__make_http_session() as session:
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async with session.get("http://localhost:0/state") as resp:
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htclient.raise_not_200(resp)
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path = (await resp.json())["result"]["data"]["path"]
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return os.path.join(path, self.__subdir)
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@contextlib.asynccontextmanager
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async def writable(self) -> AsyncGenerator[str, None]:
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async with self.__inner_writable() as path:
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path = os.path.join(path, self.__subdir)
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if not os.path.exists(path):
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os.mkdir(path)
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yield path
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@contextlib.asynccontextmanager
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async def __inner_writable(self) -> AsyncGenerator[str, None]:
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async with self.__make_http_session() as session:
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async with session.ws_connect("http://localhost:0/ws") as ws:
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path = ""
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async for msg in ws:
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if msg.type != aiohttp.WSMsgType.TEXT:
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raise PstError(f"Unexpected message type: {msg!r}")
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(event_type, event) = htserver.parse_ws_event(msg.data)
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if event_type == "storage":
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if not event["data"]["write_allowed"]:
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raise PstError("Write is not allowed")
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path = event["data"]["path"]
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break
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if not path:
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raise PstError("WS loop broken without write_allowed=True flag")
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# TODO: Actually we should follow ws events, but for fast writing we can safely ignore them
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yield path
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def __make_http_session(self) -> aiohttp.ClientSession:
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return aiohttp.ClientSession(
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headers={"User-Agent": self.__user_agent},
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connector=aiohttp.UnixConnector(path=self.__unix_path),
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timeout=aiohttp.ClientTimeout(total=self.__timeout),
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)
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