482 lines
16 KiB
Python
482 lines
16 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014-2016 OpenMarket Ltd
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
from twisted.internet import defer
|
|
|
|
from synapse.api.urls import FEDERATION_PREFIX as PREFIX
|
|
from synapse.api.errors import Codes, SynapseError
|
|
from synapse.http.server import JsonResource
|
|
from synapse.http.servlet import parse_json_object_from_request
|
|
from synapse.util.ratelimitutils import FederationRateLimiter
|
|
|
|
import functools
|
|
import logging
|
|
import simplejson as json
|
|
import re
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class TransportLayerServer(JsonResource):
|
|
"""Handles incoming federation HTTP requests"""
|
|
|
|
def __init__(self, hs):
|
|
self.hs = hs
|
|
self.clock = hs.get_clock()
|
|
|
|
super(TransportLayerServer, self).__init__(hs)
|
|
|
|
self.authenticator = Authenticator(hs)
|
|
self.ratelimiter = FederationRateLimiter(
|
|
self.clock,
|
|
window_size=hs.config.federation_rc_window_size,
|
|
sleep_limit=hs.config.federation_rc_sleep_limit,
|
|
sleep_msec=hs.config.federation_rc_sleep_delay,
|
|
reject_limit=hs.config.federation_rc_reject_limit,
|
|
concurrent_requests=hs.config.federation_rc_concurrent,
|
|
)
|
|
|
|
self.register_servlets()
|
|
|
|
def register_servlets(self):
|
|
register_servlets(
|
|
self.hs,
|
|
resource=self,
|
|
ratelimiter=self.ratelimiter,
|
|
authenticator=self.authenticator,
|
|
)
|
|
|
|
|
|
class Authenticator(object):
|
|
def __init__(self, hs):
|
|
self.keyring = hs.get_keyring()
|
|
self.server_name = hs.hostname
|
|
|
|
# A method just so we can pass 'self' as the authenticator to the Servlets
|
|
@defer.inlineCallbacks
|
|
def authenticate_request(self, request):
|
|
json_request = {
|
|
"method": request.method,
|
|
"uri": request.uri,
|
|
"destination": self.server_name,
|
|
"signatures": {},
|
|
}
|
|
|
|
content = None
|
|
origin = None
|
|
|
|
if request.method in ["PUT", "POST"]:
|
|
# TODO: Handle other method types? other content types?
|
|
try:
|
|
content_bytes = request.content.read()
|
|
content = json.loads(content_bytes)
|
|
json_request["content"] = content
|
|
except:
|
|
raise SynapseError(400, "Unable to parse JSON", Codes.BAD_JSON)
|
|
|
|
def parse_auth_header(header_str):
|
|
try:
|
|
params = auth.split(" ")[1].split(",")
|
|
param_dict = dict(kv.split("=") for kv in params)
|
|
|
|
def strip_quotes(value):
|
|
if value.startswith("\""):
|
|
return value[1:-1]
|
|
else:
|
|
return value
|
|
|
|
origin = strip_quotes(param_dict["origin"])
|
|
key = strip_quotes(param_dict["key"])
|
|
sig = strip_quotes(param_dict["sig"])
|
|
return (origin, key, sig)
|
|
except:
|
|
raise SynapseError(
|
|
400, "Malformed Authorization header", Codes.UNAUTHORIZED
|
|
)
|
|
|
|
auth_headers = request.requestHeaders.getRawHeaders(b"Authorization")
|
|
|
|
if not auth_headers:
|
|
raise SynapseError(
|
|
401, "Missing Authorization headers", Codes.UNAUTHORIZED,
|
|
)
|
|
|
|
for auth in auth_headers:
|
|
if auth.startswith("X-Matrix"):
|
|
(origin, key, sig) = parse_auth_header(auth)
|
|
json_request["origin"] = origin
|
|
json_request["signatures"].setdefault(origin, {})[key] = sig
|
|
|
|
if not json_request["signatures"]:
|
|
raise SynapseError(
|
|
401, "Missing Authorization headers", Codes.UNAUTHORIZED,
|
|
)
|
|
|
|
yield self.keyring.verify_json_for_server(origin, json_request)
|
|
|
|
logger.info("Request from %s", origin)
|
|
request.authenticated_entity = origin
|
|
|
|
defer.returnValue((origin, content))
|
|
|
|
|
|
class BaseFederationServlet(object):
|
|
def __init__(self, handler, authenticator, ratelimiter, server_name):
|
|
self.handler = handler
|
|
self.authenticator = authenticator
|
|
self.ratelimiter = ratelimiter
|
|
|
|
def _wrap(self, code):
|
|
authenticator = self.authenticator
|
|
ratelimiter = self.ratelimiter
|
|
|
|
@defer.inlineCallbacks
|
|
@functools.wraps(code)
|
|
def new_code(request, *args, **kwargs):
|
|
try:
|
|
(origin, content) = yield authenticator.authenticate_request(request)
|
|
with ratelimiter.ratelimit(origin) as d:
|
|
yield d
|
|
response = yield code(
|
|
origin, content, request.args, *args, **kwargs
|
|
)
|
|
except:
|
|
logger.exception("authenticate_request failed")
|
|
raise
|
|
defer.returnValue(response)
|
|
|
|
# Extra logic that functools.wraps() doesn't finish
|
|
new_code.__self__ = code.__self__
|
|
|
|
return new_code
|
|
|
|
def register(self, server):
|
|
pattern = re.compile("^" + PREFIX + self.PATH + "$")
|
|
|
|
for method in ("GET", "PUT", "POST"):
|
|
code = getattr(self, "on_%s" % (method), None)
|
|
if code is None:
|
|
continue
|
|
|
|
server.register_paths(method, (pattern,), self._wrap(code))
|
|
|
|
|
|
class FederationSendServlet(BaseFederationServlet):
|
|
PATH = "/send/([^/]*)/"
|
|
|
|
def __init__(self, handler, server_name, **kwargs):
|
|
super(FederationSendServlet, self).__init__(
|
|
handler, server_name=server_name, **kwargs
|
|
)
|
|
self.server_name = server_name
|
|
|
|
# This is when someone is trying to send us a bunch of data.
|
|
@defer.inlineCallbacks
|
|
def on_PUT(self, origin, content, query, transaction_id):
|
|
""" Called on PUT /send/<transaction_id>/
|
|
|
|
Args:
|
|
request (twisted.web.http.Request): The HTTP request.
|
|
transaction_id (str): The transaction_id associated with this
|
|
request. This is *not* None.
|
|
|
|
Returns:
|
|
Deferred: Results in a tuple of `(code, response)`, where
|
|
`response` is a python dict to be converted into JSON that is
|
|
used as the response body.
|
|
"""
|
|
# Parse the request
|
|
try:
|
|
transaction_data = content
|
|
|
|
logger.debug(
|
|
"Decoded %s: %s",
|
|
transaction_id, str(transaction_data)
|
|
)
|
|
|
|
logger.info(
|
|
"Received txn %s from %s. (PDUs: %d, EDUs: %d, failures: %d)",
|
|
transaction_id, origin,
|
|
len(transaction_data.get("pdus", [])),
|
|
len(transaction_data.get("edus", [])),
|
|
len(transaction_data.get("failures", [])),
|
|
)
|
|
|
|
# We should ideally be getting this from the security layer.
|
|
# origin = body["origin"]
|
|
|
|
# Add some extra data to the transaction dict that isn't included
|
|
# in the request body.
|
|
transaction_data.update(
|
|
transaction_id=transaction_id,
|
|
destination=self.server_name
|
|
)
|
|
|
|
except Exception as e:
|
|
logger.exception(e)
|
|
defer.returnValue((400, {"error": "Invalid transaction"}))
|
|
return
|
|
|
|
try:
|
|
code, response = yield self.handler.on_incoming_transaction(
|
|
transaction_data
|
|
)
|
|
except:
|
|
logger.exception("on_incoming_transaction failed")
|
|
raise
|
|
|
|
defer.returnValue((code, response))
|
|
|
|
|
|
class FederationPullServlet(BaseFederationServlet):
|
|
PATH = "/pull/"
|
|
|
|
# This is for when someone asks us for everything since version X
|
|
def on_GET(self, origin, content, query):
|
|
return self.handler.on_pull_request(query["origin"][0], query["v"])
|
|
|
|
|
|
class FederationEventServlet(BaseFederationServlet):
|
|
PATH = "/event/([^/]*)/"
|
|
|
|
# This is when someone asks for a data item for a given server data_id pair.
|
|
def on_GET(self, origin, content, query, event_id):
|
|
return self.handler.on_pdu_request(origin, event_id)
|
|
|
|
|
|
class FederationStateServlet(BaseFederationServlet):
|
|
PATH = "/state/([^/]*)/"
|
|
|
|
# This is when someone asks for all data for a given context.
|
|
def on_GET(self, origin, content, query, context):
|
|
return self.handler.on_context_state_request(
|
|
origin,
|
|
context,
|
|
query.get("event_id", [None])[0],
|
|
)
|
|
|
|
|
|
class FederationBackfillServlet(BaseFederationServlet):
|
|
PATH = "/backfill/([^/]*)/"
|
|
|
|
def on_GET(self, origin, content, query, context):
|
|
versions = query["v"]
|
|
limits = query["limit"]
|
|
|
|
if not limits:
|
|
return defer.succeed((400, {"error": "Did not include limit param"}))
|
|
|
|
limit = int(limits[-1])
|
|
|
|
return self.handler.on_backfill_request(origin, context, versions, limit)
|
|
|
|
|
|
class FederationQueryServlet(BaseFederationServlet):
|
|
PATH = "/query/([^/]*)"
|
|
|
|
# This is when we receive a server-server Query
|
|
def on_GET(self, origin, content, query, query_type):
|
|
return self.handler.on_query_request(
|
|
query_type,
|
|
{k: v[0].decode("utf-8") for k, v in query.items()}
|
|
)
|
|
|
|
|
|
class FederationMakeJoinServlet(BaseFederationServlet):
|
|
PATH = "/make_join/([^/]*)/([^/]*)"
|
|
|
|
@defer.inlineCallbacks
|
|
def on_GET(self, origin, content, query, context, user_id):
|
|
content = yield self.handler.on_make_join_request(context, user_id)
|
|
defer.returnValue((200, content))
|
|
|
|
|
|
class FederationMakeLeaveServlet(BaseFederationServlet):
|
|
PATH = "/make_leave/([^/]*)/([^/]*)"
|
|
|
|
@defer.inlineCallbacks
|
|
def on_GET(self, origin, content, query, context, user_id):
|
|
content = yield self.handler.on_make_leave_request(context, user_id)
|
|
defer.returnValue((200, content))
|
|
|
|
|
|
class FederationSendLeaveServlet(BaseFederationServlet):
|
|
PATH = "/send_leave/([^/]*)/([^/]*)"
|
|
|
|
@defer.inlineCallbacks
|
|
def on_PUT(self, origin, content, query, room_id, txid):
|
|
content = yield self.handler.on_send_leave_request(origin, content)
|
|
defer.returnValue((200, content))
|
|
|
|
|
|
class FederationEventAuthServlet(BaseFederationServlet):
|
|
PATH = "/event_auth/([^/]*)/([^/]*)"
|
|
|
|
def on_GET(self, origin, content, query, context, event_id):
|
|
return self.handler.on_event_auth(origin, context, event_id)
|
|
|
|
|
|
class FederationSendJoinServlet(BaseFederationServlet):
|
|
PATH = "/send_join/([^/]*)/([^/]*)"
|
|
|
|
@defer.inlineCallbacks
|
|
def on_PUT(self, origin, content, query, context, event_id):
|
|
# TODO(paul): assert that context/event_id parsed from path actually
|
|
# match those given in content
|
|
content = yield self.handler.on_send_join_request(origin, content)
|
|
defer.returnValue((200, content))
|
|
|
|
|
|
class FederationInviteServlet(BaseFederationServlet):
|
|
PATH = "/invite/([^/]*)/([^/]*)"
|
|
|
|
@defer.inlineCallbacks
|
|
def on_PUT(self, origin, content, query, context, event_id):
|
|
# TODO(paul): assert that context/event_id parsed from path actually
|
|
# match those given in content
|
|
content = yield self.handler.on_invite_request(origin, content)
|
|
defer.returnValue((200, content))
|
|
|
|
|
|
class FederationThirdPartyInviteExchangeServlet(BaseFederationServlet):
|
|
PATH = "/exchange_third_party_invite/([^/]*)"
|
|
|
|
@defer.inlineCallbacks
|
|
def on_PUT(self, origin, content, query, room_id):
|
|
content = yield self.handler.on_exchange_third_party_invite_request(
|
|
origin, room_id, content
|
|
)
|
|
defer.returnValue((200, content))
|
|
|
|
|
|
class FederationClientKeysQueryServlet(BaseFederationServlet):
|
|
PATH = "/user/keys/query"
|
|
|
|
@defer.inlineCallbacks
|
|
def on_POST(self, origin, content, query):
|
|
response = yield self.handler.on_query_client_keys(origin, content)
|
|
defer.returnValue((200, response))
|
|
|
|
|
|
class FederationClientKeysClaimServlet(BaseFederationServlet):
|
|
PATH = "/user/keys/claim"
|
|
|
|
@defer.inlineCallbacks
|
|
def on_POST(self, origin, content, query):
|
|
response = yield self.handler.on_claim_client_keys(origin, content)
|
|
defer.returnValue((200, response))
|
|
|
|
|
|
class FederationQueryAuthServlet(BaseFederationServlet):
|
|
PATH = "/query_auth/([^/]*)/([^/]*)"
|
|
|
|
@defer.inlineCallbacks
|
|
def on_POST(self, origin, content, query, context, event_id):
|
|
new_content = yield self.handler.on_query_auth_request(
|
|
origin, content, event_id
|
|
)
|
|
|
|
defer.returnValue((200, new_content))
|
|
|
|
|
|
class FederationGetMissingEventsServlet(BaseFederationServlet):
|
|
# TODO(paul): Why does this path alone end with "/?" optional?
|
|
PATH = "/get_missing_events/([^/]*)/?"
|
|
|
|
@defer.inlineCallbacks
|
|
def on_POST(self, origin, content, query, room_id):
|
|
limit = int(content.get("limit", 10))
|
|
min_depth = int(content.get("min_depth", 0))
|
|
earliest_events = content.get("earliest_events", [])
|
|
latest_events = content.get("latest_events", [])
|
|
|
|
content = yield self.handler.on_get_missing_events(
|
|
origin,
|
|
room_id=room_id,
|
|
earliest_events=earliest_events,
|
|
latest_events=latest_events,
|
|
min_depth=min_depth,
|
|
limit=limit,
|
|
)
|
|
|
|
defer.returnValue((200, content))
|
|
|
|
|
|
class On3pidBindServlet(BaseFederationServlet):
|
|
PATH = "/3pid/onbind"
|
|
|
|
@defer.inlineCallbacks
|
|
def on_POST(self, request):
|
|
content = parse_json_object_from_request(request)
|
|
if "invites" in content:
|
|
last_exception = None
|
|
for invite in content["invites"]:
|
|
try:
|
|
if "signed" not in invite or "token" not in invite["signed"]:
|
|
message = ("Rejecting received notification of third-"
|
|
"party invite without signed: %s" % (invite,))
|
|
logger.info(message)
|
|
raise SynapseError(400, message)
|
|
yield self.handler.exchange_third_party_invite(
|
|
invite["sender"],
|
|
invite["mxid"],
|
|
invite["room_id"],
|
|
invite["signed"],
|
|
)
|
|
except Exception as e:
|
|
last_exception = e
|
|
if last_exception:
|
|
raise last_exception
|
|
defer.returnValue((200, {}))
|
|
|
|
# Avoid doing remote HS authorization checks which are done by default by
|
|
# BaseFederationServlet.
|
|
def _wrap(self, code):
|
|
return code
|
|
|
|
|
|
SERVLET_CLASSES = (
|
|
FederationSendServlet,
|
|
FederationPullServlet,
|
|
FederationEventServlet,
|
|
FederationStateServlet,
|
|
FederationBackfillServlet,
|
|
FederationQueryServlet,
|
|
FederationMakeJoinServlet,
|
|
FederationMakeLeaveServlet,
|
|
FederationEventServlet,
|
|
FederationSendJoinServlet,
|
|
FederationSendLeaveServlet,
|
|
FederationInviteServlet,
|
|
FederationQueryAuthServlet,
|
|
FederationGetMissingEventsServlet,
|
|
FederationEventAuthServlet,
|
|
FederationClientKeysQueryServlet,
|
|
FederationClientKeysClaimServlet,
|
|
FederationThirdPartyInviteExchangeServlet,
|
|
On3pidBindServlet,
|
|
)
|
|
|
|
|
|
def register_servlets(hs, resource, authenticator, ratelimiter):
|
|
for servletclass in SERVLET_CLASSES:
|
|
servletclass(
|
|
handler=hs.get_replication_layer(),
|
|
authenticator=authenticator,
|
|
ratelimiter=ratelimiter,
|
|
server_name=hs.hostname,
|
|
).register(resource)
|