511 lines
18 KiB
Python
511 lines
18 KiB
Python
from __future__ import annotations
|
|
|
|
import logging
|
|
import re
|
|
|
|
from diskcache import Cache
|
|
from nio.client import AsyncClient
|
|
from nio.events import (
|
|
InviteMemberEvent,
|
|
KeyVerificationCancel,
|
|
KeyVerificationKey,
|
|
KeyVerificationMac,
|
|
KeyVerificationStart,
|
|
MegolmEvent,
|
|
ReactionEvent,
|
|
RedactionEvent,
|
|
RoomMessageText,
|
|
RoomMessageUnknown,
|
|
)
|
|
from nio.exceptions import LocalProtocolError, SendRetryError
|
|
from nio.responses import JoinError, RoomGetEventError, RoomSendError, ToDeviceError
|
|
from nio.rooms import MatrixRoom
|
|
|
|
import matrix_alertbot.matrix
|
|
from matrix_alertbot.alertmanager import AlertmanagerClient
|
|
from matrix_alertbot.chat_functions import strip_fallback
|
|
from matrix_alertbot.command import (
|
|
AckAlertCommand,
|
|
AngryUserCommand,
|
|
CommandFactory,
|
|
UnackAlertCommand,
|
|
)
|
|
from matrix_alertbot.config import Config
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class Callbacks:
|
|
def __init__(
|
|
self,
|
|
matrix_client: AsyncClient,
|
|
alertmanager_client: AlertmanagerClient,
|
|
cache: Cache,
|
|
config: Config,
|
|
matrix_client_pool: matrix_alertbot.matrix.MatrixClientPool,
|
|
):
|
|
"""
|
|
Args:
|
|
client: nio client used to interact with matrix.
|
|
|
|
cache: Bot cache.
|
|
|
|
alertmanager: Client used to interact with alertmanager.
|
|
|
|
config: Bot configuration parameters.
|
|
"""
|
|
self.matrix_client = matrix_client
|
|
self.matrix_client_pool = matrix_client_pool
|
|
self.cache = cache
|
|
self.alertmanager_client = alertmanager_client
|
|
self.config = config
|
|
|
|
async def message(self, room: MatrixRoom, event: RoomMessageText) -> None:
|
|
"""Callback for when a message event is received
|
|
|
|
Args:
|
|
room: The room the event came from.
|
|
|
|
event: The event defining the message.
|
|
"""
|
|
# Ignore message when we aren't the leader in the client pool
|
|
if self.matrix_client is not self.matrix_client_pool.matrix_client:
|
|
return
|
|
|
|
# Ignore messages from ourselves
|
|
if event.sender in self.config.user_ids:
|
|
return
|
|
|
|
# Ignore messages from unauthorized room
|
|
if room.room_id not in self.config.allowed_rooms:
|
|
return
|
|
|
|
# Extract the message text
|
|
msg = strip_fallback(event.body)
|
|
|
|
logger.debug(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Message received: {msg}"
|
|
)
|
|
|
|
user_id_patterns = []
|
|
for user_id in self.config.user_ids:
|
|
user, homeserver = user_id.split(":")
|
|
username = user[1:]
|
|
user_id_patterns.append(rf"@?{username}(:{homeserver})?")
|
|
|
|
pattern = re.compile(
|
|
rf"(^|\s+)({'|'.join(user_id_patterns)}):?(?=\s+|$)",
|
|
re.IGNORECASE | re.MULTILINE,
|
|
)
|
|
if pattern.search(msg) is None:
|
|
logger.debug(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Cannot process message: Bot was not mentionned."
|
|
)
|
|
return
|
|
|
|
source_content = event.source["content"]
|
|
reacted_to_event_id = (
|
|
source_content.get("m.relates_to", {})
|
|
.get("m.in_reply_to", {})
|
|
.get("event_id")
|
|
)
|
|
|
|
if reacted_to_event_id is not None:
|
|
logger.debug(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Command received is in reply to event ID {reacted_to_event_id}"
|
|
)
|
|
|
|
# Remove the mention of the bot
|
|
cmd = pattern.sub(" ", msg).strip()
|
|
logger.debug(
|
|
"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Processing command {cmd}"
|
|
)
|
|
try:
|
|
command = CommandFactory.create(
|
|
cmd,
|
|
self.matrix_client,
|
|
self.cache,
|
|
self.alertmanager_client,
|
|
self.config,
|
|
room,
|
|
event.sender,
|
|
event.event_id,
|
|
reacted_to_event_id,
|
|
)
|
|
except TypeError as e:
|
|
logger.error(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Cannot process command '{cmd}': {e}"
|
|
)
|
|
return
|
|
|
|
try:
|
|
await command.process()
|
|
except (SendRetryError, LocalProtocolError) as e:
|
|
logger.exception(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Cannot send message to room.",
|
|
exc_info=e,
|
|
)
|
|
|
|
async def invite(self, room: MatrixRoom, event: InviteMemberEvent) -> None:
|
|
"""Callback for when an invite is received. Join the room specified in the invite.
|
|
|
|
Args:
|
|
room: The room that we are invited to.
|
|
|
|
event: The invite event.
|
|
"""
|
|
# Ignore invites from unauthorized room
|
|
if room.room_id not in self.config.allowed_rooms:
|
|
return
|
|
|
|
logger.debug(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Sender {event.sender} | "
|
|
f"Invitation received."
|
|
)
|
|
|
|
# Attempt to join 3 times before giving up
|
|
for attempt in range(3):
|
|
result = await self.matrix_client.join(room.room_id)
|
|
if isinstance(result, JoinError):
|
|
logger.error(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Sender {event.sender} | "
|
|
f"Error joining room (attempt {attempt}): {result.message}"
|
|
)
|
|
else:
|
|
break
|
|
else:
|
|
logger.error(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Sender {event.sender} | "
|
|
f"Unable to join room"
|
|
)
|
|
|
|
# Successfully joined room
|
|
logger.info(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Sender {event.sender} | "
|
|
f"Room joined."
|
|
)
|
|
|
|
async def invite_event_filtered_callback(
|
|
self, room: MatrixRoom, event: InviteMemberEvent
|
|
) -> None:
|
|
"""
|
|
Since the InviteMemberEvent is fired for every m.room.member state received
|
|
in a sync response's `rooms.invite` section, we will receive some that are
|
|
not actually our own invite event (such as the inviter's membership).
|
|
This makes sure we only call `callbacks.invite` with our own invite events.
|
|
"""
|
|
if event.state_key == self.matrix_client.user_id:
|
|
# This is our own membership (invite) event
|
|
await self.invite(room, event)
|
|
|
|
async def reaction(self, room: MatrixRoom, event: ReactionEvent) -> None:
|
|
"""A reaction was sent to one of our messages. Let's send a reply acknowledging it.
|
|
|
|
Args:
|
|
room: The room the reaction was sent in.
|
|
|
|
event: The reaction event.
|
|
|
|
reacted_to_id: The event ID that the reaction points to.
|
|
"""
|
|
# Ignore message when we aren't the leader in the client pool
|
|
if self.matrix_client is not self.matrix_client_pool.matrix_client:
|
|
return
|
|
|
|
# Ignore reactions from unauthorized room
|
|
if room.room_id not in self.config.allowed_rooms:
|
|
return
|
|
|
|
# Ignore reactions from ourselves
|
|
if event.sender in self.config.user_ids:
|
|
return
|
|
|
|
logger.debug(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Reaction received: {event.key}"
|
|
)
|
|
|
|
if event.key not in self.config.allowed_reactions:
|
|
logger.warning(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Reaction not handled: {event.key}"
|
|
)
|
|
return
|
|
|
|
alert_event_id = event.reacts_to
|
|
# Get the original event that was reacted to
|
|
event_response = await self.matrix_client.room_get_event(
|
|
room.room_id, alert_event_id
|
|
)
|
|
if isinstance(event_response, RoomGetEventError):
|
|
logger.warning(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Cannot get event related to the reaction and with event ID {alert_event_id}"
|
|
)
|
|
return
|
|
reacted_to_event = event_response.event
|
|
|
|
# Only acknowledge reactions to events that we sent
|
|
if reacted_to_event.sender not in self.config.user_ids:
|
|
return
|
|
|
|
# Send a message acknowledging the reaction
|
|
command = AckAlertCommand(
|
|
self.matrix_client,
|
|
self.cache,
|
|
self.alertmanager_client,
|
|
self.config,
|
|
room,
|
|
event.sender,
|
|
event.event_id,
|
|
alert_event_id,
|
|
)
|
|
|
|
try:
|
|
await command.process()
|
|
except (SendRetryError, LocalProtocolError) as e:
|
|
logger.exception(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Cannot send message to room.",
|
|
exc_info=e,
|
|
)
|
|
|
|
if event.key in self.config.insult_reactions:
|
|
command = AngryUserCommand(
|
|
self.matrix_client,
|
|
self.cache,
|
|
self.alertmanager_client,
|
|
self.config,
|
|
room,
|
|
event.sender,
|
|
event.event_id,
|
|
)
|
|
|
|
try:
|
|
await command.process()
|
|
except (SendRetryError, LocalProtocolError) as e:
|
|
logger.exception(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Cannot send message to room.",
|
|
exc_info=e,
|
|
)
|
|
|
|
async def redaction(self, room: MatrixRoom, event: RedactionEvent) -> None:
|
|
# Ignore message when we aren't the leader in the client pool
|
|
if self.matrix_client is not self.matrix_client_pool.matrix_client:
|
|
return
|
|
|
|
# Ignore events from unauthorized room
|
|
if room.room_id not in self.config.allowed_rooms:
|
|
return
|
|
|
|
# Ignore redactions from ourselves
|
|
if event.sender in self.config.user_ids:
|
|
return
|
|
|
|
logger.debug(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Received event to remove event ID {event.redacts}"
|
|
)
|
|
|
|
command = UnackAlertCommand(
|
|
self.matrix_client,
|
|
self.cache,
|
|
self.alertmanager_client,
|
|
self.config,
|
|
room,
|
|
event.sender,
|
|
event.event_id,
|
|
event.redacts,
|
|
)
|
|
try:
|
|
await command.process()
|
|
except (SendRetryError, LocalProtocolError) as e:
|
|
logger.exception(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Cannot send message to room.",
|
|
exc_info=e,
|
|
)
|
|
|
|
async def decryption_failure(self, room: MatrixRoom, event: MegolmEvent) -> None:
|
|
"""Callback for when an event fails to decrypt. Inform the user.
|
|
|
|
Args:
|
|
room: The room that the event that we were unable to decrypt is in.
|
|
|
|
event: The encrypted event that we were unable to decrypt.
|
|
"""
|
|
# Ignore events from unauthorized room
|
|
if room.room_id not in self.config.allowed_rooms:
|
|
return
|
|
|
|
logger.error(
|
|
f"Bot {self.matrix_client.user_id} | Room ID {room.room_id} | "
|
|
f"Event ID {event.event_id} | Sender {event.sender} | "
|
|
f"Failed to decrypt event!"
|
|
f"\n\n"
|
|
f"Tip: try using a different device ID in your config file and restart."
|
|
f"\n\n"
|
|
f"If all else fails, delete your store directory and let the bot recreate "
|
|
f"it (your reminders will NOT be deleted, but the bot may respond to existing "
|
|
f"commands a second time)."
|
|
)
|
|
|
|
async def key_verification_start(self, event: KeyVerificationStart):
|
|
"""Callback for when somebody wants to verify our devices."""
|
|
if "emoji" not in event.short_authentication_string:
|
|
logger.error(
|
|
f"Bot {self.matrix_client.user_id} | Sender {event.sender} | "
|
|
f"Cannot use emoji verification with device {event.from_device}."
|
|
)
|
|
return
|
|
|
|
event_response = await self.matrix_client.accept_key_verification(
|
|
event.transaction_id
|
|
)
|
|
if isinstance(event_response, ToDeviceError):
|
|
logger.error(
|
|
f"Bot {self.matrix_client.user_id} | Sender {event.sender} | "
|
|
f"Cannot start key verification with device {event.from_device}, got error: {event_response}."
|
|
)
|
|
return
|
|
|
|
sas = self.matrix_client.key_verifications[event.transaction_id]
|
|
|
|
todevice_msg = sas.share_key()
|
|
event_response = await self.matrix_client.to_device(todevice_msg)
|
|
if isinstance(event_response, ToDeviceError):
|
|
logger.error(
|
|
f"Bot {self.matrix_client.user_id} | Sender {event.sender} | "
|
|
f"Cannot share key with device {event.from_device}, got error: {event_response}."
|
|
)
|
|
return
|
|
|
|
async def key_verification_cancel(self, event: KeyVerificationCancel):
|
|
# There is no need to issue a
|
|
# client.cancel_key_verification(tx_id, reject=False)
|
|
# here. The SAS flow is already cancelled.
|
|
# We only need to inform the user.
|
|
logger.info(
|
|
f"Bot {self.matrix_client.user_id} | Sender {event.sender} | "
|
|
f"Key verification has been cancelled for reason: {event.reason}."
|
|
)
|
|
|
|
async def key_verification_confirm(self, event: KeyVerificationKey):
|
|
sas = self.matrix_client.key_verifications[event.transaction_id]
|
|
emoji_list, alt_text_list = zip(*sas.get_emoji())
|
|
emoji_str = " ".join(emoji_list)
|
|
alt_text_str = " ".join(alt_text_list)
|
|
|
|
logger.info(
|
|
f"Bot {self.matrix_client.user_id} | Sender {event.sender} | "
|
|
f"Received request to verify emojis: {emoji_str} ({alt_text_str})"
|
|
)
|
|
|
|
event_response = await self.matrix_client.confirm_short_auth_string(
|
|
event.transaction_id
|
|
)
|
|
if isinstance(event_response, ToDeviceError):
|
|
logger.error(
|
|
f"Bot {self.matrix_client.user_id} | Sender {event.sender} | "
|
|
f"Cannot confirm emoji verification, got error: {event_response}."
|
|
)
|
|
|
|
# FIXME: We should allow manual cancel or reject
|
|
# event_response = await self.matrix_client.cancel_key_verification(
|
|
# event.transaction_id, reject=True
|
|
# )
|
|
# if isinstance(event_response, ToDeviceError):
|
|
# logger.error(
|
|
# f"Unable to reject emoji verification with {event.sender}, got error: {event_response}."
|
|
# )
|
|
#
|
|
# event_response = await self.matrix_client.cancel_key_verification(
|
|
# event.transaction_id, reject=False
|
|
# )
|
|
# if isinstance(event_response, ToDeviceError):
|
|
# logger.error(
|
|
# f"Unable to cancel emoji verification with {event.sender}, got error: {event_response}."
|
|
# )
|
|
|
|
async def key_verification_end(self, event: KeyVerificationMac) -> None:
|
|
try:
|
|
sas = self.matrix_client.key_verifications[event.transaction_id]
|
|
except KeyError:
|
|
logger.error(
|
|
f"Bot {self.matrix_client.user_id} | Sender {event.sender} | "
|
|
f"Cannot find transaction ID {event.transaction_id}"
|
|
)
|
|
return
|
|
|
|
try:
|
|
todevice_msg = sas.get_mac()
|
|
except LocalProtocolError as e:
|
|
# e.g. it might have been cancelled by ourselves
|
|
logger.warning(
|
|
f"Bot {self.matrix_client.user_id} | Sender {event.sender} | "
|
|
f"Cannot conclude key verification: {e}."
|
|
)
|
|
return
|
|
|
|
event_response = await self.matrix_client.to_device(todevice_msg)
|
|
if isinstance(event_response, ToDeviceError):
|
|
logger.error(
|
|
f"Bot {self.matrix_client.user_id} | Sender {event.sender} | "
|
|
f"Cannot conclude key verification, got error: {event_response}."
|
|
)
|
|
return
|
|
|
|
verified_devices = " ".join(sas.verified_devices)
|
|
logger.info(
|
|
f"Bot {self.matrix_client.user_id} | Sender {event.sender} | "
|
|
f"Successfully verified devices: {verified_devices}"
|
|
)
|
|
|
|
async def unknown_message(
|
|
self, room: MatrixRoom, event: RoomMessageUnknown
|
|
) -> None:
|
|
event_content = event.source["content"]
|
|
if event_content["msgtype"] != "m.key.verification.request":
|
|
return
|
|
|
|
if "m.sas.v1" not in event_content["methods"]:
|
|
return
|
|
|
|
response_event = await self.matrix_client.room_send(
|
|
room.room_id,
|
|
"m.room.message",
|
|
{
|
|
"msgtype": "m.key.verification.ready",
|
|
"methods": ["m.sas.v1"],
|
|
"m.relates_to": {"rel_type": "m.reference", "event_id": event.event_id},
|
|
},
|
|
)
|
|
|
|
if isinstance(response_event, RoomSendError):
|
|
raise SendRetryError(
|
|
f"{response_event.status_code} - {response_event.message}"
|
|
)
|