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# Copyright (c) 2022 Tulir Asokan
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from __future__ import annotations
from typing import Callable
import asyncio
import os
from attr import dataclass
from mautrix.errors import MatrixConnectionError
from mautrix.types import UserID
from mautrix.util.manhole import start_manhole
from . import SECTION_ADMIN, CommandEvent, command_handler
@dataclass
class ManholeState:
server: asyncio.AbstractServer
opened_by: UserID
close: Callable[[], None]
whitelist: set[int]
@command_handler(
needs_auth=False,
needs_admin=True,
help_section=SECTION_ADMIN,
help_text="Open a manhole into the bridge.",
help_args="<_uid..._>",
)
async def open_manhole(evt: CommandEvent) -> None:
if not evt.config["manhole.enabled"]:
await evt.reply("The manhole has been disabled in the config.")
return
elif len(evt.args) == 0:
await evt.reply("**Usage:** `$cmdprefix+sp open-manhole <uid...>`")
return
whitelist = set()
whitelist_whitelist = evt.config["manhole.whitelist"]
for arg in evt.args:
try:
uid = int(arg)
except ValueError:
await evt.reply(f"{arg} is not an integer.")
return
if whitelist_whitelist and uid not in whitelist_whitelist:
await evt.reply(f"{uid} is not in the list of allowed UIDs.")
return
whitelist.add(uid)
if evt.bridge.manhole:
added = [uid for uid in whitelist if uid not in evt.bridge.manhole.whitelist]
evt.bridge.manhole.whitelist |= set(added)
if len(added) == 0:
await evt.reply(
f"There's an existing manhole opened by {evt.bridge.manhole.opened_by}"
" and all the given UIDs are already whitelisted."
)
else:
added_str = (
f"{', '.join(str(uid) for uid in added[:-1])} and {added[-1]}"
if len(added) > 1
else added[0]
)
await evt.reply(
f"There's an existing manhole opened by {evt.bridge.manhole.opened_by}"
f". Added {added_str} to the whitelist."
)
evt.log.info(f"{evt.sender.mxid} added {added_str} to the manhole whitelist.")
return
namespace = await evt.bridge.manhole_global_namespace(evt.sender.mxid)
banner = evt.bridge.manhole_banner(evt.sender.mxid)
path = evt.config["manhole.path"]
wl_list = list(whitelist)
whitelist_str = (
f"{', '.join(str(uid) for uid in wl_list[:-1])} and {wl_list[-1]}"
if len(wl_list) > 1
else wl_list[0]
)
evt.log.info(f"{evt.sender.mxid} opened a manhole with {whitelist_str} whitelisted.")
server, close = await start_manhole(
path=path, banner=banner, namespace=namespace, loop=evt.loop, whitelist=whitelist
)
evt.bridge.manhole = ManholeState(
server=server, opened_by=evt.sender.mxid, close=close, whitelist=whitelist
)
plrl = "s" if len(whitelist) != 1 else ""
await evt.reply(f"Opened manhole at unix://{path} with UID{plrl} {whitelist_str} whitelisted")
await server.wait_closed()
evt.bridge.manhole = None
try:
os.unlink(path)
except FileNotFoundError:
pass
evt.log.info(f"{evt.sender.mxid}'s manhole was closed.")
try:
await evt.reply("Your manhole was closed.")
except (AttributeError, MatrixConnectionError) as e:
evt.log.warning(f"Failed to send manhole close notification: {e}")
@command_handler(
needs_auth=False,
needs_admin=True,
help_section=SECTION_ADMIN,
help_text="Close an open manhole.",
)
async def close_manhole(evt: CommandEvent) -> None:
if not evt.bridge.manhole:
await evt.reply("There is no open manhole.")
return
opened_by = evt.bridge.manhole.opened_by
evt.bridge.manhole.close()
evt.bridge.manhole = None
if opened_by != evt.sender.mxid:
await evt.reply(f"Closed manhole opened by {opened_by}")
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