395 lines
12 KiB
Python
395 lines
12 KiB
Python
import discord.ext.commands
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import discord
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import json
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import logging
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import nio
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import os
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import re
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def config_gen(config_file):
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config_dict = {
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"homeserver": "https://matrix.org",
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"username": "@name:matrix.org",
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"password": "my-secret-password",
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"token": "my-secret-token",
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"discord_prefix": "my-command-prefix",
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"bridge": {"channel_id": "room_id", }
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}
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if not os.path.exists(config_file):
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with open(config_file, "w") as f:
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json.dump(config_dict, f, indent=4)
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print(f"Example configuration dumped to {config_file}")
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exit()
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with open(config_file, "r") as f:
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config = json.loads(f.read())
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return config
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config = config_gen("config.json")
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message_store, channel_store = {}, {}
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class MatrixClient(nio.AsyncClient):
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async def start(self, discord_client):
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self.logger = logging.getLogger("matrix_logger")
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password = config["password"]
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timeout = 30000
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self.logger.info(await self.login(password))
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self.logger.info("Doing initial sync.")
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await self.sync(timeout)
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# Set up event callbacks
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callbacks = Callbacks(self)
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self.add_event_callback(
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callbacks.message_callback,
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(nio.RoomMessageText, nio.RoomMessageMedia,
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nio.RoomMessageEmote)
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)
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self.add_event_callback(
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callbacks.redaction_callback, nio.RedactionEvent
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)
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self.add_ephemeral_callback(
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callbacks.typing_callback, nio.EphemeralEvent
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)
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await discord_client.wait_until_ready()
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self.logger.info("Syncing forever.")
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await self.sync_forever(timeout=timeout)
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await self.close()
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async def message_send(self, message, channel_id,
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reply_id=None, edit_id=None):
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room_id = config["bridge"][str(channel_id)]
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content = {
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"msgtype": "m.text",
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"body": message,
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}
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if reply_id:
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reply_event = await self.room_get_event(
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room_id, reply_id
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)
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reply_event = reply_event.event
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content["m.relates_to"] = {
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"m.in_reply_to": {"event_id": reply_id},
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}
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content["format"] = "org.matrix.custom.html"
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content["formatted_body"] = f"""<mx-reply><blockquote>
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<a href="https://matrix.to/#/{room_id}/{reply_id}">In reply to</a>
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<a href="https://matrix.to/#/{reply_event.sender}">{reply_event.sender}</a><br>
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{reply_event.body}</blockquote></mx-reply>{message}"""
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if edit_id:
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content["body"] = f" * {message}"
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content["m.new_content"] = {
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"body": message,
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"msgtype": "m.text"
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}
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content["m.relates_to"] = {
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"event_id": edit_id,
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"rel_type": "m.replace",
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}
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message = await self.room_send(
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room_id=room_id,
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message_type="m.room.message",
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content=content
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)
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return message.event_id
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async def message_redact(self, message, channel_id):
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await self.room_redact(
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room_id=config["bridge"][str(channel_id)],
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event_id=message
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)
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async def webhook_send(self, author, avatar, message,
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event_id, channel_id):
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channel = channel_store[channel_id]
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# Create webhook if it doesn't exist
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hook_name = "matrix_bridge"
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hooks = await channel.webhooks()
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hook = discord.utils.get(hooks, name=hook_name)
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if not hook:
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hook = await channel.create_webhook(name=hook_name)
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# Username must be between 1 and 80 characters in length
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# 'wait=True' allows us to store the sent message
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try:
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hook = await hook.send(username=author[:80], avatar_url=avatar,
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content=message, wait=True)
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message_store[event_id] = hook
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message_store[hook.id] = event_id
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except discord.errors.HTTPException as e:
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self.logger.warning(f"Failed to send message {event_id}: {e}")
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class DiscordClient(discord.ext.commands.Bot):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.matrix_client = MatrixClient(
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config["homeserver"], config["username"]
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)
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self.bg_task = self.loop.create_task(self.matrix_client.start(self))
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self.add_cogs()
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def add_cogs(self):
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for cog in os.listdir("./cogs"):
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if cog.endswith(".py"):
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cog = f"cogs.{cog[:-3]}"
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self.load_extension(cog)
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def to_return(self, channel_id, user):
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if user.discriminator == "0000" \
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or str(channel_id) not in config["bridge"].keys():
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return True
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async def on_ready(self):
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for channel in config["bridge"].keys():
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channel_store[channel] = self.get_channel(int(channel))
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async def on_message(self, message):
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await self.process_commands(message)
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if self.to_return(message.channel.id, message.author) \
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or not message.content:
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return
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content = await self.process_message(message)
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matrix_message = await self.matrix_client.message_send(
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content[0], message.channel.id, reply_id=content[1]
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)
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message_store[message.id] = matrix_message
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async def on_message_edit(self, before, after):
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if self.to_return(after.channel.id, after.author):
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return
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content = await self.process_message(after)
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if before.id in message_store:
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await self.matrix_client.message_send(
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content[0], after.channel.id, edit_id=message_store[before.id]
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)
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async def on_message_delete(self, message):
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if message.id in message_store:
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await self.matrix_client.message_redact(
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message_store[message.id], message.channel.id
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)
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async def on_typing(self, channel, user, when):
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if self.to_return(channel.id, user) or user == self.user:
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return
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# Send typing event
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await self.matrix_client.room_typing(
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config["bridge"][str(channel.id)], timeout=0
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)
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async def process_message(self, message):
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content = message.clean_content
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replied_event = None
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if message.reference:
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replied_message = await message.channel.fetch_message(
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message.reference.message_id
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)
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try:
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replied_event = message_store[replied_message.id]
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except KeyError:
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pass
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# Replace emote IDs with names
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content = re.sub(r"<a?(:\w+:)\d*>", r"\g<1>", content)
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# Append attachments to message
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for attachment in message.attachments:
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content += f"\n{attachment.url}"
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content = f"[{message.author.name}] {content}"
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return content, replied_event
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class Callbacks(object):
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def __init__(self, matrix_client):
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self.matrix_client = matrix_client
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def get_channel(self, room):
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channel_id = next(
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(channel_id for channel_id, room_id in config["bridge"].items()
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if room_id == room.room_id), None
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)
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return channel_id
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def to_return(self, room, event):
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if room.room_id not in config["bridge"].values() or \
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event.sender == self.matrix_client.user:
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return True
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async def message_callback(self, room, event):
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message = event.body
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if self.to_return(room, event) or not message:
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return
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content_dict = event.source.get("content")
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channel_id = self.get_channel(room)
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author = event.sender.split(":")[0][1:]
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avatar = None
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homeserver = event.sender.split(":")[-1]
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url = "https://matrix.org/_matrix/media/r0/download"
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try:
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if content_dict["m.relates_to"]["rel_type"] == "m.replace":
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edited_event = content_dict["m.relates_to"]["event_id"]
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edited_content = await self.process_message(
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content_dict["m.new_content"]["body"], channel_id
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)
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webhook_message = message_store[edited_event]
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try:
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await webhook_message.edit(content=edited_content)
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except discord.errors.NotFound as e:
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self.matrix_client.logger.warning(
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f"Failed to edit message {edited_event}: {e}"
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)
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return
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except KeyError:
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pass
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try:
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if content_dict["m.relates_to"]["m.in_reply_to"]["event_id"] in \
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message_store.values():
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message = message.replace(f"<{config['username']}>", "", 1)
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except KeyError:
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pass
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if content_dict["msgtype"] == "m.emote":
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message = f"_{author} {message}_"
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message = await self.process_message(message, channel_id)
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# Get attachments
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try:
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attachment = event.url.split("/")[-1]
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# Highlight attachment name
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message = f"`{message}`"
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message += f"\n{url}/{homeserver}/{attachment}"
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except AttributeError:
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pass
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# Get avatar
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for user in room.users.values():
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if user.user_id == event.sender:
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if user.avatar_url:
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avatar = user.avatar_url.split("/")[-1]
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avatar = f"{url}/{homeserver}/{avatar}"
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break
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await self.matrix_client.webhook_send(
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author, avatar, message, event.event_id, channel_id
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)
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async def redaction_callback(self, room, event):
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if self.to_return(room, event):
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return
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# Redact webhook message
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try:
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message = message_store[event.redacts]
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await message.delete()
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except discord.errors.NotFound as e:
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self.matrix_client.logger.warning(
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f"Failed to delete message {event.event_id}: {e}"
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)
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except KeyError:
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pass
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async def typing_callback(self, room, event):
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if not room.typing_users \
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or room.room_id not in config["bridge"].values():
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return
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if len(room.typing_users) == 1 and \
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self.matrix_client.user in room.typing_users:
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return
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channel_id = self.get_channel(room)
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async with channel_store[channel_id].typing():
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return
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async def process_message(self, message, channel_id):
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mentions = re.findall(r"(^|\s)(@(\w*))", message)
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emotes = re.findall(r":(\w*):", message)
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guild = channel_store[channel_id].guild
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added_emotes = []
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for emote in emotes:
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if emote not in added_emotes:
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added_emotes.append(emote)
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emote_ = discord.utils.get(guild.emojis, name=emote)
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if emote_:
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message = message.replace(f":{emote}:", str(emote_))
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for mention in mentions:
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if mention[2] != "":
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member = await guild.query_members(query=mention[2])
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if member:
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message = message.replace(mention[1], member[0].mention)
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return message
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def main():
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logging.basicConfig(level=logging.INFO)
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allowed_mentions = discord.AllowedMentions(everyone=False, roles=False)
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command_prefix = config["discord_prefix"]
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intents = discord.Intents.default()
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intents.members = True
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DiscordClient(
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allowed_mentions=allowed_mentions,
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command_prefix=command_prefix, intents=intents
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).run(config["token"])
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if __name__ == "__main__":
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main()
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