/
handler.py
103 lines (88 loc) · 4.1 KB
/
handler.py
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# -*- coding: future_fstrings -*-
# mautrix-telegram - A Matrix-Telegram puppeting bridge
# Copyright (C) 2018 Tulir Asokan
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import markdown
import logging
from telethon_aio.errors import FloodWaitError
from ..util import format_duration
command_handlers = {}
def command_handler(needs_auth=True, management_only=False, needs_admin=False, name=None):
def decorator(func):
def wrapper(evt):
if management_only and not evt.is_management:
return evt.reply(f"`{evt.command}` is a restricted command:"
"you may only run it in management rooms.")
elif needs_auth and not evt.sender.logged_in:
return evt.reply("This command requires you to be logged in.")
elif needs_admin and not evt.sender.is_admin:
return evt.reply("This is command requires administrator privileges.")
return func(evt)
command_handlers[name or func.__name__.replace("_", "-")] = wrapper
return wrapper
return decorator
class CommandEvent:
def __init__(self, handler, room, sender, command, args, is_management, is_portal):
self.az = handler.az
self.log = handler.log
self.loop = handler.loop
self.tgbot = handler.tgbot
self.config = handler.config
self.command_prefix = handler.command_prefix
self.room_id = room
self.sender = sender
self.command = command
self.args = args
self.is_management = is_management
self.is_portal = is_portal
def reply(self, message, allow_html=False, render_markdown=True):
message = message.replace("$cmdprefix+sp ",
"" if self.is_management else f"{self.command_prefix} ")
message = message.replace("$cmdprefix", self.command_prefix)
html = None
if render_markdown:
html = markdown.markdown(message, safe_mode="escape" if allow_html else False)
elif allow_html:
html = message
return self.az.intent.send_notice(self.room_id, message, html=html)
class CommandHandler:
log = logging.getLogger("mau.commands")
def __init__(self, context):
self.az, self.db, self.config, self.loop, self.tgbot = context
self.command_prefix = self.config["bridge.command_prefix"]
# region Utility functions for handling commands
async def handle(self, room, sender, command, args, is_management, is_portal):
evt = CommandEvent(self, room, sender, command, args,
is_management, is_portal)
orig_command = command
command = command.lower()
try:
command = command_handlers[command]
except KeyError:
if sender.command_status and "next" in sender.command_status:
args.insert(0, orig_command)
evt.command = ""
command = sender.command_status["next"]
else:
command = command_handlers["unknown-command"]
try:
await command(evt)
except FloodWaitError as e:
return await evt.reply(f"Flood error: Please wait {format_duration(e.seconds)}")
except Exception:
self.log.exception("Fatal error handling command "
f"{evt.command} {' '.join(args)} from {sender.mxid}")
return await evt.reply("Fatal error while handling command. "
"Check logs for more details.")