251 lines
8.7 KiB
Python
Executable File
251 lines
8.7 KiB
Python
Executable File
#!/usr/bin/env python3
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import asyncio
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import glob
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import importlib
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import json
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import os
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import re
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import sys
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import traceback
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import urllib.parse
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import requests
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from nio import AsyncClient, InviteEvent, JoinError, RoomMessageText
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# Couple of custom exceptions
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class CommandRequiresAdmin(Exception):
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pass
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class CommandRequiresOwner(Exception):
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pass
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class Bot:
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appid = 'org.vranki.hemppa'
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version = '1.1'
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client = None
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join_on_invite = False
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modules = dict()
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pollcount = 0
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poll_task = None
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owners = []
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async def send_text(self, room, body):
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msg = {
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"body": body,
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"msgtype": "m.text"
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}
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await self.client.room_send(room.room_id, 'm.room.message', msg)
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async def send_html(self, room, html, plaintext):
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msg = {
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"msgtype": "m.text",
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"format": "org.matrix.custom.html",
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"formatted_body": html,
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"body": plaintext
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}
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await self.client.room_send(room.room_id, 'm.room.message', msg)
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def get_room_by_id(self, room_id):
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return self.client.rooms[room_id]
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# Throws exception if event sender is not a room admin
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def must_be_admin(self, room, event):
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if not self.is_admin(room, event):
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raise CommandRequiresAdmin
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# Throws exception if event sender is not a bot owner
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def must_be_owner(self, event):
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if not self.is_owner(event):
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raise CommandRequiresOwner
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# Returns true if event's sender is admin in the room event was sent in,
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# or is bot owner
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def is_admin(self, room, event):
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if self.is_owner(event):
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return True
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if event.sender not in room.power_levels.users:
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return False
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return room.power_levels.users[event.sender] >= 50
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# Returns true if event's sender is owner of the bot
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def is_owner(self, event):
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return event.sender in self.owners
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def save_settings(self):
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module_settings = dict()
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for modulename, moduleobject in self.modules.items():
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if "get_settings" in dir(moduleobject):
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try:
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module_settings[modulename] = moduleobject.get_settings()
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except Exception:
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traceback.print_exc(file=sys.stderr)
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data = {self.appid: self.version, 'module_settings': module_settings}
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self.set_account_data(data)
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def load_settings(self, data):
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if not data:
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return
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if not data.get('module_settings'):
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return
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for modulename, moduleobject in self.modules.items():
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if data['module_settings'].get(modulename):
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if "set_settings" in dir(moduleobject):
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try:
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moduleobject.set_settings(
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data['module_settings'][modulename])
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except Exception:
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traceback.print_exc(file=sys.stderr)
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async def message_cb(self, room, event):
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# Figure out the command
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body = event.body
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if len(body) == 0:
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return
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command = body.split().pop(0)
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# Strip away non-alphanumeric characters, including leading ! for security
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command = re.sub(r'\W+', '', command)
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moduleobject = self.modules.get(command)
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if "matrix_message" in dir(moduleobject):
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try:
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await moduleobject.matrix_message(bot, room, event)
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except CommandRequiresAdmin:
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await self.send_text(room, f'Sorry, you need admin power level in this room to run that command.')
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except CommandRequiresOwner:
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await self.send_text(room, f'Sorry, only bot owner can run that command.')
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except Exception:
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await self.send_text(room, f'Module {command} experienced difficulty: {sys.exc_info()[0]} - see log for details')
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traceback.print_exc(file=sys.stderr)
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async def invite_cb(self, room, event):
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if self.join_on_invite or self.is_owner(event):
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for attempt in range(3):
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result = await self.client.join(room.room_id)
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if type(result) == JoinError:
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print(f"Error joining room {room.room_id} (attempt %d): %s",
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attempt, result.message,
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)
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else:
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break
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else:
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print(
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f'Received invite event, but not joining as sender is not owner or bot not configured to join on invite. {event}')
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def load_module(self, modulename):
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try:
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module = importlib.import_module('modules.' + modulename)
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cls = getattr(module, 'MatrixModule')
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return cls()
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except ModuleNotFoundError:
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print('Module ', modulename, ' failed to load!')
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traceback.print_exc(file=sys.stderr)
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return None
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def get_modules(self):
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modulefiles = glob.glob('./modules/*.py')
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for modulefile in modulefiles:
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modulename = os.path.splitext(os.path.basename(modulefile))[0]
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moduleobject = self.load_module(modulename)
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if moduleobject:
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self.modules[modulename] = moduleobject
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async def poll_timer(self):
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while True:
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self.pollcount = self.pollcount + 1
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for modulename, moduleobject in self.modules.items():
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if "matrix_poll" in dir(moduleobject):
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try:
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await moduleobject.matrix_poll(bot, self.pollcount)
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except Exception:
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traceback.print_exc(file=sys.stderr)
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await asyncio.sleep(10)
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def set_account_data(self, data):
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userid = urllib.parse.quote(os.environ['MATRIX_USER'])
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ad_url = f"{self.client.homeserver}/_matrix/client/r0/user/{userid}/account_data/{self.appid}?access_token={self.client.access_token}"
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response = requests.put(ad_url, json.dumps(data))
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if response.status_code != 200:
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print('Setting account data failed:', response, response.json())
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def get_account_data(self):
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userid = urllib.parse.quote(os.environ['MATRIX_USER'])
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ad_url = f"{self.client.homeserver}/_matrix/client/r0/user/{userid}/account_data/{self.appid}?access_token={self.client.access_token}"
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response = requests.get(ad_url)
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if response.status_code == 200:
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return response.json()
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print(
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f'Getting account data failed: {response} {response.json()} - this is normal if you have not saved any settings yet.')
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return None
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def init(self):
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self.client = AsyncClient(
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os.environ['MATRIX_SERVER'], os.environ['MATRIX_USER'])
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self.client.access_token = os.getenv('MATRIX_ACCESS_TOKEN')
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self.join_on_invite = os.getenv("JOIN_ON_INVITE") is not None
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self.owners = os.environ['BOT_OWNERS'].split(',')
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self.get_modules()
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def stop(self):
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print(f'Stopping {len(self.modules)} modules..')
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for modulename, moduleobject in self.modules.items():
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print('Stopping', modulename, '..')
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if "matrix_stop" in dir(moduleobject):
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try:
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moduleobject.matrix_stop(bot)
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except Exception:
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traceback.print_exc(file=sys.stderr)
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async def run(self):
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if not self.client.access_token:
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await self.client.login(os.environ['MATRIX_PASSWORD'])
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print("Logged in with password, access token:",
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self.client.access_token)
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await self.client.sync()
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print(f'Starting {len(self.modules)} modules..')
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for modulename, moduleobject in self.modules.items():
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print('Starting', modulename, '..')
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if "matrix_start" in dir(moduleobject):
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try:
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moduleobject.matrix_start(bot)
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except Exception:
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traceback.print_exc(file=sys.stderr)
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self.poll_task = asyncio.get_event_loop().create_task(self.poll_timer())
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if self.client.logged_in:
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self.load_settings(self.get_account_data())
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self.client.add_event_callback(self.message_cb, RoomMessageText)
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self.client.add_event_callback(self.invite_cb, (InviteEvent,))
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if self.join_on_invite:
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print('Note: Bot will join rooms if invited')
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print('Bot running as', self.client.user, ', owners', self.owners)
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await self.client.sync_forever(timeout=30000)
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else:
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print('Client was not able to log in, check env variables!')
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bot = Bot()
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bot.init()
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try:
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asyncio.get_event_loop().run_until_complete(bot.run())
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except KeyboardInterrupt:
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if bot.poll_task:
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bot.poll_task.cancel()
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bot.stop()
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