def __init__(self, cfg, loop):
self.loop = loop
# List of bridges
self.bridges = list()
# Mapping of MUC-JID -> Nickname
self.mucs = dict()
# Mapping of MUC-JID -> Password
self.muc_passwords = dict()
try:
# Get the optional XMPP address (host, port) if specified
xmpp_address = tuple()
if 'host' in cfg['xmpp']:
xmpp_address = (cfg['xmpp']['host'], cfg['xmpp']['port'])
# Parse the MUC definitions
self.get_mucs(cfg)
if len(self.mucs) == 0:
logging.info("No MUCs defined.")
except KeyError:
raise InvalidConfigError
# Parse the bridges from the config file
need_incoming_webhooks = False
for bridge_cfg in cfg['bridges']:
bridge = SingleBridge(bridge_cfg, self)
self.bridges.append(bridge)
if bridge.has_incoming_webhooks():
need_incoming_webhooks = True
# Initialize XMPP client
self.xmpp_client = XMPPBridgeBot(cfg['xmpp']['jid'],
cfg['xmpp']['password'], self)
self.xmpp_client.connect(address=xmpp_address)
# Initialize HTTP server if needed
if not need_incoming_webhooks:
self.http_server = None
logging.info("No incoming webhooks defined.")
elif 'incoming_webhook_listener' in cfg:
bind_address = cfg['incoming_webhook_listener']['bind_address']
port = cfg['incoming_webhook_listener']['port']
self.http_app = aiohttp.web.Application(loop=loop)
self.http_app.router.add_route('POST', '/',
self.handle_incoming_webhook)
self.http_handler = self.http_app.make_handler()
http_create_server = loop.create_server(self.http_handler,
bind_address, port)
self.http_server = loop.run_until_complete(http_create_server)
logging.info("Listening for incoming webhooks on "
"http://{}:{}/".format(bind_address, port))
else:
self.http_server = None
logging.warn("No 'incoming_webhook_listener' in the config even "
"though incoming webhooks are defined. Ignoring all "
"incoming webhooks.")
if not self.http_server:
logging.info("Not listening for incoming webhooks.")
def __init__(self, cfg, loop):
self.loop = loop
self.incoming_normal_mappings = defaultdict(set)
self.incoming_muc_mappings = defaultdict(set)
self.outgoing_mappings = defaultdict(list)
# Mapping of MUC-JID -> Nickname
self.mucs = dict()
# Mapping of MUC-JID -> Password
self.muc_passwords = dict()
try:
# Get the optional XMPP address (host, port) if specified
xmpp_address = tuple()
if 'host' in cfg['xmpp']:
xmpp_address = (cfg['xmpp']['host'], cfg['xmpp']['port'])
self.get_mucs(cfg)
self.get_outgoing_mappings(cfg)
self.get_incoming_mappings(cfg)
except KeyError:
raise InvalidConfigError
# Initialize XMPP client
self.xmpp_client = XMPPBridgeBot(cfg['xmpp']['jid'],
cfg['xmpp']['password'], self)
self.xmpp_client.connect(address=xmpp_address)
# Initialize HTTP server if needed
incoming_webhooks_count = (len(self.incoming_muc_mappings) +
len(self.incoming_normal_mappings))
if incoming_webhooks_count == 0:
self.http_server = None
logging.info("No incoming webhooks defined.")
elif 'incoming_webhook_listener' in cfg:
bind_address = cfg['incoming_webhook_listener']['bind_address']
port = cfg['incoming_webhook_listener']['port']
self.http_app = aiohttp.web.Application(loop=loop)
self.http_app.router.add_route('POST', '/', self.handle_incoming)
self.http_handler = self.http_app.make_handler()
http_create_server = loop.create_server(self.http_handler,
bind_address, port)
self.http_server = loop.run_until_complete(http_create_server)
logging.info("Listening for incoming webhooks on "
"http://{}:{}/".format(bind_address, port))
else:
self.http_server = None
logging.warn("No 'incoming_webhook_listener' in the config even "
"though incoming webhooks are defined. Ignoring all "
"incoming webhooks.")
if not self.http_server:
logging.info("Not listening for incoming webhooks.")
class XMPPWebhookBridge:
"""This is the central component: It initializes and connects the
:class:`XMPPBridgeBot` with the webhook handling part. The webhook part
consists of an HTTP server listening for incoming webhooks (POST requests),
and an HTTP client part for sending outgoing webhooks (POST requests).
"""
def __init__(self, cfg, loop):
self.loop = loop
# List of bridges
self.bridges = list()
# Mapping of MUC-JID -> Nickname
self.mucs = dict()
# Mapping of MUC-JID -> Password
self.muc_passwords = dict()
# Prometheus access token
self.prometheus_token = ""
try:
# Get the optional XMPP address (host, port) if specified
xmpp_address = tuple()
if 'host' in cfg['xmpp']:
xmpp_address = (cfg['xmpp']['host'], cfg['xmpp']['port'])
# Parse the MUC definitions
self.get_mucs(cfg)
if len(self.mucs) == 0:
logging.info("No MUCs defined.")
except KeyError:
raise InvalidConfigError
# Parse the bridges from the config file
need_incoming_webhooks = False
for bridge_cfg in cfg['bridges']:
bridge = SingleBridge(bridge_cfg, self)
self.bridges.append(bridge)
if bridge.has_incoming_webhooks():
need_incoming_webhooks = True
# Get optional prometheus token from config file
if 'prometheus_token' in cfg:
self.prometheus_token = cfg['prometheus_token']
# Initialize XMPP client
self.xmpp_client = XMPPBridgeBot(cfg['xmpp']['jid'],
cfg['xmpp']['password'],
self)
self.xmpp_client.connect(address=xmpp_address)
# Initialize HTTP server if needed
if not need_incoming_webhooks:
self.http_server = None
logging.info("No incoming webhooks defined.")
elif 'incoming_webhook_listener' in cfg:
bind_address = cfg['incoming_webhook_listener']['bind_address']
port = cfg['incoming_webhook_listener']['port']
self.http_app = aiohttp.web.Application(loop=loop)
self.http_app.router.add_route('POST',
'/',
self.handle_incoming_webhook)
self.register_prometheus_endpoint()
self.http_handler = self.http_app.make_handler()
http_create_server = loop.create_server(
self.http_handler,
bind_address,
port)
self.http_server = loop.run_until_complete(http_create_server)
logging.info("Listening for incoming webhooks on "
"http://{}:{}/".format(bind_address, port))
else:
self.http_server = None
logging.warn("No 'incoming_webhook_listener' in the config even "
"though incoming webhooks are defined. Ignoring all "
"incoming webhooks.")
if not self.http_server:
logging.info("Not listening for incoming webhooks.")
def register_prometheus_endpoint(self):
self.http_app.router.add_route('GET',
'/metrics',
self.handle_prometheus_request)
logging.info("Serving prometheus metrics under /metrics")
def process(self):
self.loop.run_forever()
async def send_outgoing_webhook(self, outgoing_webhook, msg):
"""This coroutine handles outgoing webhooks: It relays the messages
received from XMPP and triggers external webhooks.
"""
from_jid = msg['from']
username = str(from_jid)
if 'override_username' in outgoing_webhook:
username = self.format_jid_string(
outgoing_webhook['override_username'],
from_jid,
msg['type'] == 'groupchat')
message = msg['body']
if 'message_template' in outgoing_webhook:
message = outgoing_webhook['message_template'].format(
msg=message)
payload = {
'text': message,
'username': username
}
if 'override_channel' in outgoing_webhook:
payload['channel'] = outgoing_webhook['override_channel']
if 'avatar_url' in outgoing_webhook:
icon_url = self.format_jid_string(
outgoing_webhook['avatar_url'],
from_jid,
msg['type'] == 'groupchat')
payload['icon_url'] = icon_url
# Attachment formatting is useful for integrating with RocketChat.
if ('use_attachment_formatting' in outgoing_webhook and
outgoing_webhook['use_attachment_formatting']):
payload_attachment = {
'title': "From: {}".format(username),
'text': message
}
if 'attachment_link' in outgoing_webhook:
payload_attachment['title_link'] = \
outgoing_webhook['attachment_link']
payload = {
'attachments': [payload_attachment]
}
logging.debug("<-- Sending outgoing webhook. (from '{}')".format(
from_jid))
request = await outgoing_webhook['session'].post(
outgoing_webhook['url'],
data=json.dumps(payload),
headers={'content-type': 'application/json'})
await request.release()
return
async def handle_incoming_webhook(self, request):
"""This coroutine handles incoming webhooks: It receives incoming
webhooks and relays the messages to XMPP."""
if request.content_type == 'application/json':
payload = await request.json()
else:
# TODO: Handle other content types
payload = await request.post()
# Disgard empty messages
if payload['text'] == "":
return aiohttp.web.Response(status=412)
token = payload['token']
logging.debug("--> Handling incoming request from token "
"'{}'...".format(token))
username = payload['user_name']
msg = payload['text']
for bridge in self.bridges:
bridge.handle_incoming_webhook(token, username, msg)
Metrics.increment_messages_sent()
return aiohttp.web.Response(status=200)
async def handle_prometheus_request(self, request: aiohttp.web.Request):
params = request.rel_url.query
token = params.get("token", "")
if token != self.prometheus_token:
return aiohttp.web.Response(status=401)
Metrics.check_connection_active(self.xmpp_client)
return aiohttp.web.Response(status=200, body=pc.generate_latest(pc.REGISTRY), content_type="text/plain")
def get_mucs(self, cfg):
"""Reads the MUC definitions from the config file."""
if 'mucs' not in cfg['xmpp']:
return
for muc in cfg['xmpp']['mucs']:
jid = muc['jid']
nickname = muc['nickname']
self.mucs[jid] = nickname
if 'password' in muc:
self.muc_passwords[jid] = muc['password']
def format_jid_string(self, string, jid, is_groupchat=False):
"""Formats the given string by replacing all placeholders.
The placeholders are replaced with corresponding values from the JID.
"""
formatted_string = ""
if is_groupchat:
formatted_string = string.format(
bare_jid=jid.bare,
full_jid=jid.full,
local_jid=jid.local,
nick=jid.resource,
jid=jid.full)
else:
formatted_string = string.format(
bare_jid=jid.bare,
full_jid=jid.full,
local_jid=jid.local,
nick=jid.local,
jid=jid.bare)
return formatted_string
def close(self):
"""Closes all open connections, servers and handlers. This is used
when exiting the bridge.
"""
if self.http_server:
logging.info("Closing HTTP server...")
self.http_server.close()
self.loop.run_until_complete(self.http_server.wait_closed())
self.loop.run_until_complete(self.http_handler.
finish_connections(1.0))
self.loop.run_until_complete(self.http_app.finish())
logging.info("Closed HTTP server..")
logging.info("Closing HTTP client sessions...")
for bridge in self.bridges:
for webhook in bridge.outgoing_webhooks:
webhook['session'].close()
logging.info("Closed HTTP client sessions..")
logging.info("Disconnecting from XMPP...")
self.xmpp_client.disconnect()
logging.info("Disconnected from XMPP.")
def check_connection_active(cls, xmpp_client: XMPPBridgeBot):
if xmpp_client.is_connected():
cls.connection_active.set(1)
else:
cls.connection_active.set(0)
class XMPPWebhookBridge:
"""This is the central component: It initializes and connects the
:class:`XMPPBridgeBot` with the webhook handling part. The webhook part
consists of an HTTP server listening for incoming webhooks (POST requests),
and an HTTP client part for sending outgoing webhooks (POST requests).
"""
def __init__(self, cfg, loop):
self.loop = loop
self.incoming_normal_mappings = defaultdict(set)
self.incoming_muc_mappings = defaultdict(set)
self.outgoing_mappings = defaultdict(list)
# Mapping of MUC-JID -> Nickname
self.mucs = dict()
# Mapping of MUC-JID -> Password
self.muc_passwords = dict()
try:
# Get the optional XMPP address (host, port) if specified
xmpp_address = tuple()
if 'host' in cfg['xmpp']:
xmpp_address = (cfg['xmpp']['host'], cfg['xmpp']['port'])
self.get_mucs(cfg)
self.get_outgoing_mappings(cfg)
self.get_incoming_mappings(cfg)
except KeyError:
raise InvalidConfigError
# Initialize XMPP client
self.xmpp_client = XMPPBridgeBot(cfg['xmpp']['jid'],
cfg['xmpp']['password'], self)
self.xmpp_client.connect(address=xmpp_address)
# Initialize HTTP server if needed
incoming_webhooks_count = (len(self.incoming_muc_mappings) +
len(self.incoming_normal_mappings))
if incoming_webhooks_count == 0:
self.http_server = None
logging.info("No incoming webhooks defined.")
elif 'incoming_webhook_listener' in cfg:
bind_address = cfg['incoming_webhook_listener']['bind_address']
port = cfg['incoming_webhook_listener']['port']
self.http_app = aiohttp.web.Application(loop=loop)
self.http_app.router.add_route('POST', '/', self.handle_incoming)
self.http_handler = self.http_app.make_handler()
http_create_server = loop.create_server(self.http_handler,
bind_address, port)
self.http_server = loop.run_until_complete(http_create_server)
logging.info("Listening for incoming webhooks on "
"http://{}:{}/".format(bind_address, port))
else:
self.http_server = None
logging.warn("No 'incoming_webhook_listener' in the config even "
"though incoming webhooks are defined. Ignoring all "
"incoming webhooks.")
if not self.http_server:
logging.info("Not listening for incoming webhooks.")
def process(self):
self.loop.run_forever()
async def handle_outgoing(self, outgoing_webhook, msg):
"""This coroutine handles outgoing webhooks: It relays the messages
received from XMPP and triggers external webhooks.
"""
from_jid = msg['from']
username = str(from_jid)
if 'override_username' in outgoing_webhook:
if msg['type'] == 'groupchat':
username = outgoing_webhook['override_username'].format(
bare_jid=from_jid.bare,
full_jid=from_jid.full,
local_jid=from_jid.local,
nick=from_jid.resource,
jid=from_jid.full)
else:
username = outgoing_webhook['override_username'].format(
bare_jid=from_jid.bare,
full_jid=from_jid.full,
local_jid=from_jid.local,
nick=from_jid.local,
jid=from_jid.bare)
message = msg['body']
if 'message_template' in outgoing_webhook:
message = outgoing_webhook['message_template'].format(msg=message)
payload = {'text': message, 'username': username}
if 'override_channel' in outgoing_webhook:
payload['channel'] = outgoing_webhook['override_channel']
# Attachment formatting is useful for integrating with RocketChat.
if ('use_attachment_formatting' in outgoing_webhook
and outgoing_webhook['use_attachment_formatting']):
payload_attachment = {
'title': "From: {}".format(username),
'text': message
}
if 'attachment_link' in outgoing_webhook:
payload_attachment['title_link'] = \
outgoing_webhook['attachment_link']
payload = {'attachments': [payload_attachment]}
logging.debug(
"<-- Sending outgoing webhook. (from '{}')".format(from_jid))
request = await outgoing_webhook['session'].post(
outgoing_webhook['url'],
data=json.dumps(payload),
headers={'content-type': 'application/json'})
await request.release()
return
async def handle_incoming(self, request):
"""This coroutine handles incoming webhooks: It receives incoming
webhooks and relays the messages to XMPP."""
if request.content_type == 'application/json':
payload = await request.json()
# print(payload)
else:
# TODO: Handle other content types
payload = await request.post()
# Disgard empty messages
if payload['text'] == "":
return aiohttp.web.Response()
token = payload['token']
logging.debug("--> Handling incoming request from token "
"'{}'...".format(token))
msg = payload['text']
for xmpp_normal_jid in self.incoming_normal_mappings[token]:
logging.debug("<-- Sending a normal chat message to XMPP.")
self.xmpp_client.send_message(mto=xmpp_normal_jid,
mbody=msg,
mtype='chat',
mnick=payload['user_name'])
for xmpp_muc_jid in self.incoming_muc_mappings[token]:
logging.debug("<-- Sending a MUC chat message to XMPP.")
self.xmpp_client.send_message(mto=xmpp_muc_jid,
mbody=msg,
mtype='groupchat',
mnick=payload['user_name'])
return aiohttp.web.Response()
def get_mucs(self, cfg):
"""Reads the MUC definitions from the config file."""
for muc in cfg['xmpp']['mucs']:
jid = muc['jid']
nickname = muc['nickname']
self.mucs[jid] = nickname
if 'password' in muc:
self.muc_passwords[jid] = muc['password']
def get_outgoing_mappings(self, cfg):
"""Reads the outgoing webhook definitions from the config file.
This also sets up the HTTP client session for each webhook."""
bridges = cfg['bridges']
for bridge in bridges:
if 'outgoing_webhooks' not in bridge:
# No outgoing webhooks in this bridge.
continue
outgoing_webhooks = bridge['outgoing_webhooks']
xmpp_endpoints = bridge['xmpp_endpoints']
# Check whether all normal messages to this bridge should be
# relayed.
relay_all_normal = False
for xmpp_endpoint in xmpp_endpoints:
if ('relay_all_normal' in xmpp_endpoint
and xmpp_endpoint['relay_all_normal'] is True):
relay_all_normal = True
break
for outgoing_webhook in outgoing_webhooks:
if 'url' not in outgoing_webhook:
raise InvalidConfigError("Error in config file: "
"'url' is missing from an "
"outgoing webhook definition.")
# Set up SSL context for certificate pinning.
if 'cafile' in outgoing_webhook:
cafile = os.path.abspath(outgoing_webhook['cafile'])
sslcontext = ssl.create_default_context(cafile=cafile)
conn = aiohttp.TCPConnector(ssl_context=sslcontext)
session = aiohttp.ClientSession(loop=self.loop,
connector=conn)
else:
session = aiohttp.ClientSession(loop=self.loop)
# TODO: Handle ConnectionRefusedError.
outgoing_webhook['session'] = session
if relay_all_normal:
self.outgoing_mappings['all_normal'].append(
outgoing_webhook)
for xmpp_endpoint in xmpp_endpoints:
# Determine whether the JID corresponds to a MUC or a
# normal chat:
if 'muc' in xmpp_endpoint:
if xmpp_endpoint['muc'] not in self.mucs:
raise InvalidConfigError(
"Error in config file: XMPP MUC '{}' was not "
"defined in the xmpp.mucs section.".format(
xmpp_endpoint['muc']))
self.outgoing_mappings[xmpp_endpoint['muc']].append(
outgoing_webhook)
elif 'normal' in xmpp_endpoint:
if relay_all_normal:
# Don't add normal JIDs when all normal messages
# are relayed anyways.
continue
self.outgoing_mappings[xmpp_endpoint['normal']].append(
outgoing_webhook)
def get_incoming_mappings(self, cfg):
"""Reads the incoming webhook definitions from the config file."""
bridges = cfg['bridges']
for bridge in bridges:
if 'incoming_webhooks' not in bridge:
# No incoming webhooks in this bridge.
continue
incoming_webhooks = bridge['incoming_webhooks']
xmpp_endpoints = bridge['xmpp_endpoints']
for incoming_webhook in incoming_webhooks:
if 'token' not in incoming_webhook:
raise InvalidConfigError("Invalid config file: "
"'token' missing from outgoing "
"webhook definition.")
token = incoming_webhook['token']
for xmpp_endpoint in xmpp_endpoints:
if 'muc' in xmpp_endpoint:
self.incoming_muc_mappings[token].add(
xmpp_endpoint['muc'])
elif 'normal' in xmpp_endpoint:
self.incoming_normal_mappings[token].add(
xmpp_endpoint['normal'])
def close(self):
"""Closes all open connections, servers and handlers. This is used
when exiting the bridge.
"""
if self.http_server:
logging.info("Closing HTTP server...")
self.http_server.close()
self.loop.run_until_complete(self.http_server.wait_closed())
self.loop.run_until_complete(
self.http_handler.finish_connections(1.0))
self.loop.run_until_complete(self.http_app.finish())
logging.info("Closed HTTP server..")
logging.info("Closing HTTP client sessions...")
for outgoing_mapping in self.outgoing_mappings.values():
for webhook in outgoing_mapping:
webhook['session'].close()
logging.info("Closed HTTP client sessions..")
logging.info("Disconnecting from XMPP...")
self.xmpp_client.disconnect()
logging.info("Disconnected from XMPP.")
