synapse-product/synapse/federation/transport/server.py

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# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
# Copyright 2018 New Vector Ltd
# Copyright 2019 The Matrix.org Foundation C.I.C.
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#
# 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.
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import functools
import logging
import re
from typing import Optional, Tuple, Type
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from twisted.internet.defer import maybeDeferred
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import synapse
from synapse.api.errors import Codes, FederationDeniedError, SynapseError
from synapse.api.room_versions import RoomVersions
from synapse.api.urls import (
FEDERATION_UNSTABLE_PREFIX,
FEDERATION_V1_PREFIX,
FEDERATION_V2_PREFIX,
)
from synapse.http.endpoint import parse_and_validate_server_name
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from synapse.http.server import JsonResource
from synapse.http.servlet import (
parse_boolean_from_args,
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parse_integer_from_args,
parse_json_object_from_request,
parse_string_from_args,
)
from synapse.logging.context import run_in_background
from synapse.logging.opentracing import (
start_active_span,
start_active_span_from_request,
tags,
whitelisted_homeserver,
)
from synapse.server import HomeServer
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from synapse.types import ThirdPartyInstanceID, get_domain_from_id
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from synapse.util.ratelimitutils import FederationRateLimiter
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from synapse.util.versionstring import get_version_string
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logger = logging.getLogger(__name__)
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class TransportLayerServer(JsonResource):
"""Handles incoming federation HTTP requests"""
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def __init__(self, hs, servlet_groups=None):
"""Initialize the TransportLayerServer
Will by default register all servlets. For custom behaviour, pass in
a list of servlet_groups to register.
Args:
hs (synapse.server.HomeServer): homeserver
servlet_groups (list[str], optional): List of servlet groups to register.
Defaults to ``DEFAULT_SERVLET_GROUPS``.
"""
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self.hs = hs
self.clock = hs.get_clock()
self.servlet_groups = servlet_groups
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super(TransportLayerServer, self).__init__(hs, canonical_json=False)
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self.authenticator = Authenticator(hs)
self.ratelimiter = FederationRateLimiter(
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self.clock, config=hs.config.rc_federation
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)
self.register_servlets()
def register_servlets(self):
register_servlets(
self.hs,
resource=self,
ratelimiter=self.ratelimiter,
authenticator=self.authenticator,
servlet_groups=self.servlet_groups,
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)
class AuthenticationError(SynapseError):
"""There was a problem authenticating the request"""
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pass
class NoAuthenticationError(AuthenticationError):
"""The request had no authentication information"""
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pass
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class Authenticator(object):
def __init__(self, hs: HomeServer):
self._clock = hs.get_clock()
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self.keyring = hs.get_keyring()
self.server_name = hs.hostname
self.store = hs.get_datastore()
self.federation_domain_whitelist = hs.config.federation_domain_whitelist
self.notifer = hs.get_notifier()
self.replication_client = None
if hs.config.worker.worker_app:
self.replication_client = hs.get_tcp_replication()
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# A method just so we can pass 'self' as the authenticator to the Servlets
async def authenticate_request(self, request, content):
now = self._clock.time_msec()
json_request = {
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"method": request.method.decode("ascii"),
"uri": request.uri.decode("ascii"),
"destination": self.server_name,
"signatures": {},
}
if content is not None:
json_request["content"] = content
origin = None
auth_headers = request.requestHeaders.getRawHeaders(b"Authorization")
if not auth_headers:
raise NoAuthenticationError(
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401, "Missing Authorization headers", Codes.UNAUTHORIZED
)
for auth in auth_headers:
if auth.startswith(b"X-Matrix"):
(origin, key, sig) = _parse_auth_header(auth)
json_request["origin"] = origin
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json_request["signatures"].setdefault(origin, {})[key] = sig
if (
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self.federation_domain_whitelist is not None
and origin not in self.federation_domain_whitelist
):
raise FederationDeniedError(origin)
if not json_request["signatures"]:
raise NoAuthenticationError(
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401, "Missing Authorization headers", Codes.UNAUTHORIZED
)
await self.keyring.verify_json_for_server(
origin, json_request, now, "Incoming request"
)
logger.debug("Request from %s", origin)
request.authenticated_entity = origin
# If we get a valid signed request from the other side, its probably
# alive
retry_timings = await self.store.get_destination_retry_timings(origin)
if retry_timings and retry_timings["retry_last_ts"]:
run_in_background(self._reset_retry_timings, origin)
return origin
async def _reset_retry_timings(self, origin):
try:
logger.info("Marking origin %r as up", origin)
await self.store.set_destination_retry_timings(origin, None, 0, 0)
# Inform the relevant places that the remote server is back up.
self.notifer.notify_remote_server_up(origin)
if self.replication_client:
# If we're on a worker we try and inform master about this. The
# replication client doesn't hook into the notifier to avoid
# infinite loops where we send a `REMOTE_SERVER_UP` command to
# master, which then echoes it back to us which in turn pokes
# the notifier.
self.replication_client.send_remote_server_up(origin)
except Exception:
logger.exception("Error resetting retry timings on %s", origin)
def _parse_auth_header(header_bytes):
"""Parse an X-Matrix auth header
Args:
header_bytes (bytes): header value
Returns:
Tuple[str, str, str]: origin, key id, signature.
Raises:
AuthenticationError if the header could not be parsed
"""
try:
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header_str = header_bytes.decode("utf-8")
params = header_str.split(" ")[1].split(",")
param_dict = dict(kv.split("=") for kv in params)
def strip_quotes(value):
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if value.startswith('"'):
return value[1:-1]
else:
return value
origin = strip_quotes(param_dict["origin"])
# ensure that the origin is a valid server name
parse_and_validate_server_name(origin)
key = strip_quotes(param_dict["key"])
sig = strip_quotes(param_dict["sig"])
return origin, key, sig
except Exception as e:
logger.warning(
"Error parsing auth header '%s': %s",
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header_bytes.decode("ascii", "replace"),
e,
)
raise AuthenticationError(
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400, "Malformed Authorization header", Codes.UNAUTHORIZED
)
class BaseFederationServlet(object):
"""Abstract base class for federation servlet classes.
The servlet object should have a PATH attribute which takes the form of a regexp to
match against the request path (excluding the /federation/v1 prefix).
The servlet should also implement one or more of on_GET, on_POST, on_PUT, to match
the appropriate HTTP method. These methods must be *asynchronous* and have the
signature:
on_<METHOD>(self, origin, content, query, **kwargs)
With arguments:
origin (unicode|None): The authenticated server_name of the calling server,
unless REQUIRE_AUTH is set to False and authentication failed.
content (unicode|None): decoded json body of the request. None if the
request was a GET.
query (dict[bytes, list[bytes]]): Query params from the request. url-decoded
(ie, '+' and '%xx' are decoded) but note that it is *not* utf8-decoded
yet.
**kwargs (dict[unicode, unicode]): the dict mapping keys to path
components as specified in the path match regexp.
Returns:
Optional[Tuple[int, object]]: either (response code, response object) to
return a JSON response, or None if the request has already been handled.
Raises:
SynapseError: to return an error code
Exception: other exceptions will be caught, logged, and a 500 will be
returned.
"""
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PATH = "" # Overridden in subclasses, the regex to match against the path.
REQUIRE_AUTH = True
PREFIX = FEDERATION_V1_PREFIX # Allows specifying the API version
def __init__(self, handler, authenticator, ratelimiter, server_name):
self.handler = handler
self.authenticator = authenticator
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self.ratelimiter = ratelimiter
def _wrap(self, func):
authenticator = self.authenticator
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ratelimiter = self.ratelimiter
@functools.wraps(func)
async def new_func(request, *args, **kwargs):
"""A callback which can be passed to HttpServer.RegisterPaths
Args:
request (twisted.web.http.Request):
*args: unused?
**kwargs (dict[unicode, unicode]): the dict mapping keys to path
components as specified in the path match regexp.
Returns:
Tuple[int, object]|None: (response code, response object) as returned by
the callback method. None if the request has already been handled.
"""
content = None
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if request.method in [b"PUT", b"POST"]:
# TODO: Handle other method types? other content types?
content = parse_json_object_from_request(request)
try:
origin = await authenticator.authenticate_request(request, content)
except NoAuthenticationError:
origin = None
if self.REQUIRE_AUTH:
logger.warning(
"authenticate_request failed: missing authentication"
)
raise
except Exception as e:
logger.warning("authenticate_request failed: %s", e)
raise
request_tags = {
"request_id": request.get_request_id(),
tags.SPAN_KIND: tags.SPAN_KIND_RPC_SERVER,
tags.HTTP_METHOD: request.get_method(),
tags.HTTP_URL: request.get_redacted_uri(),
tags.PEER_HOST_IPV6: request.getClientIP(),
"authenticated_entity": origin,
"servlet_name": request.request_metrics.name,
}
# Only accept the span context if the origin is authenticated
# and whitelisted
if origin and whitelisted_homeserver(origin):
scope = start_active_span_from_request(
request, "incoming-federation-request", tags=request_tags
)
else:
scope = start_active_span(
"incoming-federation-request", tags=request_tags
)
with scope:
Add basic opentracing support (#5544) * Configure and initialise tracer Includes config options for the tracer and sets up JaegerClient. * Scope manager using LogContexts We piggy-back our tracer scopes by using log context. The current log context gives us the current scope. If new scope is created we create a stack of scopes in the context. * jaeger is a dependency now * Carrier inject and extraction for Twisted Headers * Trace federation requests on the way in and out. The span is created in _started_processing and closed in _finished_processing because we need a meaningful log context. * Create logcontext for new scope. Instead of having a stack of scopes in a logcontext we create a new context for a new scope if the current logcontext already has a scope. * Remove scope from logcontext if logcontext is top level * Disable tracer if not configured * typo * Remove dependence on jaeger internals * bools * Set service name * :Explicitely state that the tracer is disabled * Black is the new black * Newsfile * Code style * Use the new config setup. * Generate config. * Copyright * Rename config to opentracing * Remove user whitelisting * Empty whitelist by default * User ConfigError instead of RuntimeError * Use isinstance * Use tag constants for opentracing. * Remove debug comment and no need to explicitely record error * Two errors a "s(c)entry" * Docstrings! * Remove debugging brainslip * Homeserver Whitlisting * Better opentracing config comment * linting * Inclue worker name in service_name * Make opentracing an optional dependency * Neater config retreival * Clean up dummy tags * Instantiate tracing as object instead of global class * Inlcude opentracing as a homeserver member. * Thread opentracing to the request level * Reference opetnracing through hs * Instantiate dummy opentracin g for tests. * About to revert, just keeping the unfinished changes just in case * Revert back to global state, commit number: 9ce4a3d9067bf9889b86c360c05ac88618b85c4f * Use class level methods in tracerutils * Start and stop requests spans in a place where we have access to the authenticated entity * Seen it, isort it * Make sure to close the active span. * I'm getting black and blue from this. * Logger formatting Co-Authored-By: Erik Johnston <erik@matrix.org> * Outdated comment * Import opentracing at the top * Return a contextmanager * Start tracing client requests from the servlet * Return noop context manager if not tracing * Explicitely say that these are federation requests * Include servlet name in client requests * Use context manager * Move opentracing to logging/ * Seen it, isort it again! * Ignore twisted return exceptions on context exit * Escape the scope * Scopes should be entered to make them useful. * Nicer decorator names * Just one init, init? * Don't need to close something that isn't open * Docs make you smarter
2019-07-11 05:36:03 -04:00
if origin:
with ratelimiter.ratelimit(origin) as d:
await d
response = await func(
Add basic opentracing support (#5544) * Configure and initialise tracer Includes config options for the tracer and sets up JaegerClient. * Scope manager using LogContexts We piggy-back our tracer scopes by using log context. The current log context gives us the current scope. If new scope is created we create a stack of scopes in the context. * jaeger is a dependency now * Carrier inject and extraction for Twisted Headers * Trace federation requests on the way in and out. The span is created in _started_processing and closed in _finished_processing because we need a meaningful log context. * Create logcontext for new scope. Instead of having a stack of scopes in a logcontext we create a new context for a new scope if the current logcontext already has a scope. * Remove scope from logcontext if logcontext is top level * Disable tracer if not configured * typo * Remove dependence on jaeger internals * bools * Set service name * :Explicitely state that the tracer is disabled * Black is the new black * Newsfile * Code style * Use the new config setup. * Generate config. * Copyright * Rename config to opentracing * Remove user whitelisting * Empty whitelist by default * User ConfigError instead of RuntimeError * Use isinstance * Use tag constants for opentracing. * Remove debug comment and no need to explicitely record error * Two errors a "s(c)entry" * Docstrings! * Remove debugging brainslip * Homeserver Whitlisting * Better opentracing config comment * linting * Inclue worker name in service_name * Make opentracing an optional dependency * Neater config retreival * Clean up dummy tags * Instantiate tracing as object instead of global class * Inlcude opentracing as a homeserver member. * Thread opentracing to the request level * Reference opetnracing through hs * Instantiate dummy opentracin g for tests. * About to revert, just keeping the unfinished changes just in case * Revert back to global state, commit number: 9ce4a3d9067bf9889b86c360c05ac88618b85c4f * Use class level methods in tracerutils * Start and stop requests spans in a place where we have access to the authenticated entity * Seen it, isort it * Make sure to close the active span. * I'm getting black and blue from this. * Logger formatting Co-Authored-By: Erik Johnston <erik@matrix.org> * Outdated comment * Import opentracing at the top * Return a contextmanager * Start tracing client requests from the servlet * Return noop context manager if not tracing * Explicitely say that these are federation requests * Include servlet name in client requests * Use context manager * Move opentracing to logging/ * Seen it, isort it again! * Ignore twisted return exceptions on context exit * Escape the scope * Scopes should be entered to make them useful. * Nicer decorator names * Just one init, init? * Don't need to close something that isn't open * Docs make you smarter
2019-07-11 05:36:03 -04:00
origin, content, request.args, *args, **kwargs
)
else:
response = await func(
origin, content, request.args, *args, **kwargs
)
return response
return new_func
def register(self, server):
pattern = re.compile("^" + self.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),
self.__class__.__name__,
trace=False,
)
class FederationSendServlet(BaseFederationServlet):
PATH = "/send/(?P<transaction_id>[^/]*)/?"
def __init__(self, handler, server_name, **kwargs):
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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.
async def on_PUT(self, origin, content, query, transaction_id):
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""" 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:
Tuple of `(code, response)`, where
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`response` is a python dict to be converted into JSON that is
used as the response body.
"""
# Parse the request
try:
transaction_data = content
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logger.debug("Decoded %s: %s", transaction_id, str(transaction_data))
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logger.info(
"Received txn %s from %s. (PDUs: %d, EDUs: %d)",
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transaction_id,
origin,
len(transaction_data.get("pdus", [])),
len(transaction_data.get("edus", [])),
)
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# 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(
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transaction_id=transaction_id, destination=self.server_name
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)
except Exception as e:
logger.exception(e)
return 400, {"error": "Invalid transaction"}
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try:
code, response = await self.handler.on_incoming_transaction(
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origin, transaction_data
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)
except Exception:
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logger.exception("on_incoming_transaction failed")
raise
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return code, response
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class FederationEventServlet(BaseFederationServlet):
PATH = "/event/(?P<event_id>[^/]*)/?"
# This is when someone asks for a data item for a given server data_id pair.
async def on_GET(self, origin, content, query, event_id):
return await self.handler.on_pdu_request(origin, event_id)
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class FederationStateV1Servlet(BaseFederationServlet):
PATH = "/state/(?P<context>[^/]*)/?"
# This is when someone asks for all data for a given context.
async def on_GET(self, origin, content, query, context):
return await self.handler.on_context_state_request(
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origin,
context,
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parse_string_from_args(query, "event_id", None, required=False),
)
class FederationStateIdsServlet(BaseFederationServlet):
PATH = "/state_ids/(?P<room_id>[^/]*)/?"
async def on_GET(self, origin, content, query, room_id):
return await self.handler.on_state_ids_request(
origin,
room_id,
parse_string_from_args(query, "event_id", None, required=True),
)
class FederationBackfillServlet(BaseFederationServlet):
PATH = "/backfill/(?P<context>[^/]*)/?"
async def on_GET(self, origin, content, query, context):
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versions = [x.decode("ascii") for x in query[b"v"]]
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limit = parse_integer_from_args(query, "limit", None)
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if not limit:
return 400, {"error": "Did not include limit param"}
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return await self.handler.on_backfill_request(origin, context, versions, limit)
class FederationQueryServlet(BaseFederationServlet):
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PATH = "/query/(?P<query_type>[^/]*)"
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# This is when we receive a server-server Query
async def on_GET(self, origin, content, query, query_type):
return await self.handler.on_query_request(
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query_type,
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{k.decode("utf8"): v[0].decode("utf-8") for k, v in query.items()},
)
class FederationMakeJoinServlet(BaseFederationServlet):
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PATH = "/make_join/(?P<context>[^/]*)/(?P<user_id>[^/]*)"
async def on_GET(self, origin, _content, query, context, user_id):
"""
Args:
origin (unicode): The authenticated server_name of the calling server
_content (None): (GETs don't have bodies)
query (dict[bytes, list[bytes]]): Query params from the request.
**kwargs (dict[unicode, unicode]): the dict mapping keys to path
components as specified in the path match regexp.
Returns:
Tuple[int, object]: (response code, response object)
"""
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versions = query.get(b"ver")
if versions is not None:
supported_versions = [v.decode("utf-8") for v in versions]
else:
supported_versions = ["1"]
content = await self.handler.on_make_join_request(
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origin, context, user_id, supported_versions=supported_versions
)
return 200, content
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class FederationMakeLeaveServlet(BaseFederationServlet):
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PATH = "/make_leave/(?P<context>[^/]*)/(?P<user_id>[^/]*)"
async def on_GET(self, origin, content, query, context, user_id):
content = await self.handler.on_make_leave_request(origin, context, user_id)
return 200, content
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class FederationV1SendLeaveServlet(BaseFederationServlet):
PATH = "/send_leave/(?P<room_id>[^/]*)/(?P<event_id>[^/]*)"
async def on_PUT(self, origin, content, query, room_id, event_id):
content = await self.handler.on_send_leave_request(origin, content, room_id)
return 200, (200, content)
class FederationV2SendLeaveServlet(BaseFederationServlet):
PATH = "/send_leave/(?P<room_id>[^/]*)/(?P<event_id>[^/]*)"
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PREFIX = FEDERATION_V2_PREFIX
async def on_PUT(self, origin, content, query, room_id, event_id):
content = await self.handler.on_send_leave_request(origin, content, room_id)
return 200, content
class FederationEventAuthServlet(BaseFederationServlet):
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PATH = "/event_auth/(?P<context>[^/]*)/(?P<event_id>[^/]*)"
async def on_GET(self, origin, content, query, context, event_id):
return await self.handler.on_event_auth(origin, context, event_id)
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class FederationV1SendJoinServlet(BaseFederationServlet):
PATH = "/send_join/(?P<context>[^/]*)/(?P<event_id>[^/]*)"
async 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 = await self.handler.on_send_join_request(origin, content, context)
return 200, (200, content)
class FederationV2SendJoinServlet(BaseFederationServlet):
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PATH = "/send_join/(?P<context>[^/]*)/(?P<event_id>[^/]*)"
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PREFIX = FEDERATION_V2_PREFIX
async 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 = await self.handler.on_send_join_request(origin, content, context)
return 200, content
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class FederationV1InviteServlet(BaseFederationServlet):
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PATH = "/invite/(?P<context>[^/]*)/(?P<event_id>[^/]*)"
async def on_PUT(self, origin, content, query, context, event_id):
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# We don't get a room version, so we have to assume its EITHER v1 or
# v2. This is "fine" as the only difference between V1 and V2 is the
# state resolution algorithm, and we don't use that for processing
# invites
content = await self.handler.on_invite_request(
origin, content, room_version_id=RoomVersions.V1.identifier
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)
# V1 federation API is defined to return a content of `[200, {...}]`
# due to a historical bug.
return 200, (200, content)
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class FederationV2InviteServlet(BaseFederationServlet):
PATH = "/invite/(?P<context>[^/]*)/(?P<event_id>[^/]*)"
PREFIX = FEDERATION_V2_PREFIX
async 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
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room_version = content["room_version"]
event = content["event"]
invite_room_state = content["invite_room_state"]
# Synapse expects invite_room_state to be in unsigned, as it is in v1
# API
event.setdefault("unsigned", {})["invite_room_state"] = invite_room_state
content = await self.handler.on_invite_request(
origin, event, room_version_id=room_version
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)
return 200, content
class FederationThirdPartyInviteExchangeServlet(BaseFederationServlet):
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PATH = "/exchange_third_party_invite/(?P<room_id>[^/]*)"
async def on_PUT(self, origin, content, query, room_id):
content = await self.handler.on_exchange_third_party_invite_request(
room_id, content
)
return 200, content
class FederationClientKeysQueryServlet(BaseFederationServlet):
PATH = "/user/keys/query"
async def on_POST(self, origin, content, query):
return await self.handler.on_query_client_keys(origin, content)
class FederationUserDevicesQueryServlet(BaseFederationServlet):
PATH = "/user/devices/(?P<user_id>[^/]*)"
async def on_GET(self, origin, content, query, user_id):
return await self.handler.on_query_user_devices(origin, user_id)
class FederationClientKeysClaimServlet(BaseFederationServlet):
PATH = "/user/keys/claim"
async def on_POST(self, origin, content, query):
response = await self.handler.on_claim_client_keys(origin, content)
return 200, response
class FederationGetMissingEventsServlet(BaseFederationServlet):
# TODO(paul): Why does this path alone end with "/?" optional?
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PATH = "/get_missing_events/(?P<room_id>[^/]*)/?"
async def on_POST(self, origin, content, query, room_id):
limit = int(content.get("limit", 10))
earliest_events = content.get("earliest_events", [])
latest_events = content.get("latest_events", [])
content = await self.handler.on_get_missing_events(
origin,
room_id=room_id,
earliest_events=earliest_events,
latest_events=latest_events,
limit=limit,
)
return 200, content
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class On3pidBindServlet(BaseFederationServlet):
PATH = "/3pid/onbind"
REQUIRE_AUTH = False
async def on_POST(self, origin, content, query):
if "invites" in content:
last_exception = None
for invite in content["invites"]:
try:
if "signed" not in invite or "token" not in invite["signed"]:
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message = (
"Rejecting received notification of third-"
"party invite without signed: %s" % (invite,)
)
logger.info(message)
raise SynapseError(400, message)
await 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
return 200, {}
class OpenIdUserInfo(BaseFederationServlet):
"""
Exchange a bearer token for information about a user.
The response format should be compatible with:
http://openid.net/specs/openid-connect-core-1_0.html#UserInfoResponse
GET /openid/userinfo?access_token=ABDEFGH HTTP/1.1
HTTP/1.1 200 OK
Content-Type: application/json
{
"sub": "@userpart:example.org",
}
"""
PATH = "/openid/userinfo"
REQUIRE_AUTH = False
async def on_GET(self, origin, content, query):
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token = query.get(b"access_token", [None])[0]
if token is None:
return (
401,
{"errcode": "M_MISSING_TOKEN", "error": "Access Token required"},
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)
user_id = await self.handler.on_openid_userinfo(token.decode("ascii"))
if user_id is None:
return (
401,
{
"errcode": "M_UNKNOWN_TOKEN",
"error": "Access Token unknown or expired",
},
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)
return 200, {"sub": user_id}
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class PublicRoomList(BaseFederationServlet):
"""
Fetch the public room list for this server.
This API returns information in the same format as /publicRooms on the
client API, but will only ever include local public rooms and hence is
intended for consumption by other homeservers.
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GET /publicRooms HTTP/1.1
HTTP/1.1 200 OK
Content-Type: application/json
{
"chunk": [
{
"aliases": [
"#test:localhost"
],
"guest_can_join": false,
"name": "test room",
"num_joined_members": 3,
"room_id": "!whkydVegtvatLfXmPN:localhost",
"world_readable": false
}
],
"end": "END",
"start": "START"
}
"""
PATH = "/publicRooms"
def __init__(self, handler, authenticator, ratelimiter, server_name, allow_access):
super(PublicRoomList, self).__init__(
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handler, authenticator, ratelimiter, server_name
)
self.allow_access = allow_access
async def on_GET(self, origin, content, query):
if not self.allow_access:
raise FederationDeniedError(origin)
limit = parse_integer_from_args(query, "limit", 0)
since_token = parse_string_from_args(query, "since", None)
include_all_networks = parse_boolean_from_args(
query, "include_all_networks", False
)
third_party_instance_id = parse_string_from_args(
query, "third_party_instance_id", None
)
if include_all_networks:
network_tuple = None
elif third_party_instance_id:
network_tuple = ThirdPartyInstanceID.from_string(third_party_instance_id)
else:
network_tuple = ThirdPartyInstanceID(None, None)
if limit == 0:
# zero is a special value which corresponds to no limit.
limit = None
data = await maybeDeferred(
self.handler.get_local_public_room_list,
limit,
since_token,
network_tuple=network_tuple,
from_federation=True,
)
return 200, data
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async def on_POST(self, origin, content, query):
# This implements MSC2197 (Search Filtering over Federation)
if not self.allow_access:
raise FederationDeniedError(origin)
limit = int(content.get("limit", 100)) # type: Optional[int]
since_token = content.get("since", None)
search_filter = content.get("filter", None)
include_all_networks = content.get("include_all_networks", False)
third_party_instance_id = content.get("third_party_instance_id", None)
if include_all_networks:
network_tuple = None
if third_party_instance_id is not None:
raise SynapseError(
400, "Can't use include_all_networks with an explicit network"
)
elif third_party_instance_id is None:
network_tuple = ThirdPartyInstanceID(None, None)
else:
network_tuple = ThirdPartyInstanceID.from_string(third_party_instance_id)
if search_filter is None:
logger.warning("Nonefilter")
if limit == 0:
# zero is a special value which corresponds to no limit.
limit = None
data = await self.handler.get_local_public_room_list(
limit=limit,
since_token=since_token,
search_filter=search_filter,
network_tuple=network_tuple,
from_federation=True,
)
return 200, data
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class FederationVersionServlet(BaseFederationServlet):
PATH = "/version"
REQUIRE_AUTH = False
async def on_GET(self, origin, content, query):
return (
200,
{"server": {"name": "Synapse", "version": get_version_string(synapse)}},
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)
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class FederationGroupsProfileServlet(BaseFederationServlet):
"""Get/set the basic profile of a group on behalf of a user
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"""
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PATH = "/groups/(?P<group_id>[^/]*)/profile"
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async def on_GET(self, origin, content, query, group_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
new_content = await self.handler.get_group_profile(group_id, requester_user_id)
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return 200, new_content
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async def on_POST(self, origin, content, query, group_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
new_content = await self.handler.update_group_profile(
group_id, requester_user_id, content
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)
return 200, new_content
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class FederationGroupsSummaryServlet(BaseFederationServlet):
PATH = "/groups/(?P<group_id>[^/]*)/summary"
async def on_GET(self, origin, content, query, group_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
new_content = await self.handler.get_group_summary(group_id, requester_user_id)
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return 200, new_content
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class FederationGroupsRoomsServlet(BaseFederationServlet):
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"""Get the rooms in a group on behalf of a user
"""
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PATH = "/groups/(?P<group_id>[^/]*)/rooms"
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async def on_GET(self, origin, content, query, group_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
new_content = await self.handler.get_rooms_in_group(group_id, requester_user_id)
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return 200, new_content
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class FederationGroupsAddRoomsServlet(BaseFederationServlet):
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"""Add/remove room from group
"""
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PATH = "/groups/(?P<group_id>[^/]*)/room/(?P<room_id>[^/]*)"
async def on_POST(self, origin, content, query, group_id, room_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
new_content = await self.handler.add_room_to_group(
group_id, requester_user_id, room_id, content
)
return 200, new_content
async def on_DELETE(self, origin, content, query, group_id, room_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
new_content = await self.handler.remove_room_from_group(
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group_id, requester_user_id, room_id
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)
return 200, new_content
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class FederationGroupsAddRoomsConfigServlet(BaseFederationServlet):
"""Update room config in group
"""
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PATH = (
"/groups/(?P<group_id>[^/]*)/room/(?P<room_id>[^/]*)"
"/config/(?P<config_key>[^/]*)"
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)
async def on_POST(self, origin, content, query, group_id, room_id, config_key):
requester_user_id = parse_string_from_args(query, "requester_user_id")
if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
result = await self.handler.update_room_in_group(
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group_id, requester_user_id, room_id, config_key, content
)
return 200, result
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class FederationGroupsUsersServlet(BaseFederationServlet):
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"""Get the users in a group on behalf of a user
"""
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PATH = "/groups/(?P<group_id>[^/]*)/users"
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async def on_GET(self, origin, content, query, group_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
new_content = await self.handler.get_users_in_group(group_id, requester_user_id)
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return 200, new_content
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class FederationGroupsInvitedUsersServlet(BaseFederationServlet):
"""Get the users that have been invited to a group
"""
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PATH = "/groups/(?P<group_id>[^/]*)/invited_users"
async def on_GET(self, origin, content, query, group_id):
requester_user_id = parse_string_from_args(query, "requester_user_id")
if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
new_content = await self.handler.get_invited_users_in_group(
group_id, requester_user_id
)
return 200, new_content
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class FederationGroupsInviteServlet(BaseFederationServlet):
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"""Ask a group server to invite someone to the group
"""
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PATH = "/groups/(?P<group_id>[^/]*)/users/(?P<user_id>[^/]*)/invite"
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async def on_POST(self, origin, content, query, group_id, user_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
new_content = await self.handler.invite_to_group(
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group_id, user_id, requester_user_id, content
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)
return 200, new_content
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class FederationGroupsAcceptInviteServlet(BaseFederationServlet):
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"""Accept an invitation from the group server
"""
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PATH = "/groups/(?P<group_id>[^/]*)/users/(?P<user_id>[^/]*)/accept_invite"
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async def on_POST(self, origin, content, query, group_id, user_id):
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if get_domain_from_id(user_id) != origin:
raise SynapseError(403, "user_id doesn't match origin")
new_content = await self.handler.accept_invite(group_id, user_id, content)
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return 200, new_content
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class FederationGroupsJoinServlet(BaseFederationServlet):
"""Attempt to join a group
"""
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PATH = "/groups/(?P<group_id>[^/]*)/users/(?P<user_id>[^/]*)/join"
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async def on_POST(self, origin, content, query, group_id, user_id):
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if get_domain_from_id(user_id) != origin:
raise SynapseError(403, "user_id doesn't match origin")
new_content = await self.handler.join_group(group_id, user_id, content)
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return 200, new_content
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class FederationGroupsRemoveUserServlet(BaseFederationServlet):
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"""Leave or kick a user from the group
"""
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PATH = "/groups/(?P<group_id>[^/]*)/users/(?P<user_id>[^/]*)/remove"
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async def on_POST(self, origin, content, query, group_id, user_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
new_content = await self.handler.remove_user_from_group(
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group_id, user_id, requester_user_id, content
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)
return 200, new_content
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class FederationGroupsLocalInviteServlet(BaseFederationServlet):
"""A group server has invited a local user
"""
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PATH = "/groups/local/(?P<group_id>[^/]*)/users/(?P<user_id>[^/]*)/invite"
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async def on_POST(self, origin, content, query, group_id, user_id):
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if get_domain_from_id(group_id) != origin:
raise SynapseError(403, "group_id doesn't match origin")
new_content = await self.handler.on_invite(group_id, user_id, content)
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return 200, new_content
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class FederationGroupsRemoveLocalUserServlet(BaseFederationServlet):
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"""A group server has removed a local user
"""
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PATH = "/groups/local/(?P<group_id>[^/]*)/users/(?P<user_id>[^/]*)/remove"
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async def on_POST(self, origin, content, query, group_id, user_id):
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if get_domain_from_id(group_id) != origin:
raise SynapseError(403, "user_id doesn't match origin")
new_content = await self.handler.user_removed_from_group(
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group_id, user_id, content
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)
return 200, new_content
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class FederationGroupsRenewAttestaionServlet(BaseFederationServlet):
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"""A group or user's server renews their attestation
"""
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PATH = "/groups/(?P<group_id>[^/]*)/renew_attestation/(?P<user_id>[^/]*)"
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async def on_POST(self, origin, content, query, group_id, user_id):
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# We don't need to check auth here as we check the attestation signatures
new_content = await self.handler.on_renew_attestation(
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group_id, user_id, content
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)
return 200, new_content
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class FederationGroupsSummaryRoomsServlet(BaseFederationServlet):
"""Add/remove a room from the group summary, with optional category.
Matches both:
- /groups/:group/summary/rooms/:room_id
- /groups/:group/summary/categories/:category/rooms/:room_id
"""
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PATH = (
"/groups/(?P<group_id>[^/]*)/summary"
"(/categories/(?P<category_id>[^/]+))?"
"/rooms/(?P<room_id>[^/]*)"
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)
async def on_POST(self, origin, content, query, group_id, category_id, room_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
if category_id == "":
raise SynapseError(400, "category_id cannot be empty string")
resp = await self.handler.update_group_summary_room(
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group_id,
requester_user_id,
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room_id=room_id,
category_id=category_id,
content=content,
)
return 200, resp
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async def on_DELETE(self, origin, content, query, group_id, category_id, room_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
if category_id == "":
raise SynapseError(400, "category_id cannot be empty string")
resp = await self.handler.delete_group_summary_room(
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group_id, requester_user_id, room_id=room_id, category_id=category_id
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)
return 200, resp
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class FederationGroupsCategoriesServlet(BaseFederationServlet):
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"""Get all categories for a group
"""
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PATH = "/groups/(?P<group_id>[^/]*)/categories/?"
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async def on_GET(self, origin, content, query, group_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
resp = await self.handler.get_group_categories(group_id, requester_user_id)
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return 200, resp
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class FederationGroupsCategoryServlet(BaseFederationServlet):
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"""Add/remove/get a category in a group
"""
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PATH = "/groups/(?P<group_id>[^/]*)/categories/(?P<category_id>[^/]+)"
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async def on_GET(self, origin, content, query, group_id, category_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
resp = await self.handler.get_group_category(
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group_id, requester_user_id, category_id
)
return 200, resp
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async def on_POST(self, origin, content, query, group_id, category_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
if category_id == "":
raise SynapseError(400, "category_id cannot be empty string")
resp = await self.handler.upsert_group_category(
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group_id, requester_user_id, category_id, content
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)
return 200, resp
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async def on_DELETE(self, origin, content, query, group_id, category_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
if category_id == "":
raise SynapseError(400, "category_id cannot be empty string")
resp = await self.handler.delete_group_category(
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group_id, requester_user_id, category_id
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)
return 200, resp
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class FederationGroupsRolesServlet(BaseFederationServlet):
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"""Get roles in a group
"""
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PATH = "/groups/(?P<group_id>[^/]*)/roles/?"
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async def on_GET(self, origin, content, query, group_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
resp = await self.handler.get_group_roles(group_id, requester_user_id)
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return 200, resp
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class FederationGroupsRoleServlet(BaseFederationServlet):
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"""Add/remove/get a role in a group
"""
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PATH = "/groups/(?P<group_id>[^/]*)/roles/(?P<role_id>[^/]+)"
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async def on_GET(self, origin, content, query, group_id, role_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
resp = await self.handler.get_group_role(group_id, requester_user_id, role_id)
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return 200, resp
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async def on_POST(self, origin, content, query, group_id, role_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
if role_id == "":
raise SynapseError(400, "role_id cannot be empty string")
resp = await self.handler.update_group_role(
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group_id, requester_user_id, role_id, content
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)
return 200, resp
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async def on_DELETE(self, origin, content, query, group_id, role_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
if role_id == "":
raise SynapseError(400, "role_id cannot be empty string")
resp = await self.handler.delete_group_role(
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group_id, requester_user_id, role_id
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)
return 200, resp
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class FederationGroupsSummaryUsersServlet(BaseFederationServlet):
"""Add/remove a user from the group summary, with optional role.
Matches both:
- /groups/:group/summary/users/:user_id
- /groups/:group/summary/roles/:role/users/:user_id
"""
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PATH = (
"/groups/(?P<group_id>[^/]*)/summary"
"(/roles/(?P<role_id>[^/]+))?"
"/users/(?P<user_id>[^/]*)"
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)
async def on_POST(self, origin, content, query, group_id, role_id, user_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
if role_id == "":
raise SynapseError(400, "role_id cannot be empty string")
resp = await self.handler.update_group_summary_user(
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group_id,
requester_user_id,
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user_id=user_id,
role_id=role_id,
content=content,
)
return 200, resp
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async def on_DELETE(self, origin, content, query, group_id, role_id, user_id):
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requester_user_id = parse_string_from_args(query, "requester_user_id")
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if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
if role_id == "":
raise SynapseError(400, "role_id cannot be empty string")
resp = await self.handler.delete_group_summary_user(
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group_id, requester_user_id, user_id=user_id, role_id=role_id
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)
return 200, resp
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class FederationGroupsBulkPublicisedServlet(BaseFederationServlet):
"""Get roles in a group
"""
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PATH = "/get_groups_publicised"
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async def on_POST(self, origin, content, query):
resp = await self.handler.bulk_get_publicised_groups(
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content["user_ids"], proxy=False
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)
return 200, resp
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class FederationGroupsSettingJoinPolicyServlet(BaseFederationServlet):
"""Sets whether a group is joinable without an invite or knock
"""
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PATH = "/groups/(?P<group_id>[^/]*)/settings/m.join_policy"
async def on_PUT(self, origin, content, query, group_id):
requester_user_id = parse_string_from_args(query, "requester_user_id")
if get_domain_from_id(requester_user_id) != origin:
raise SynapseError(403, "requester_user_id doesn't match origin")
new_content = await self.handler.set_group_join_policy(
group_id, requester_user_id, content
)
return 200, new_content
class RoomComplexityServlet(BaseFederationServlet):
"""
Indicates to other servers how complex (and therefore likely
resource-intensive) a public room this server knows about is.
"""
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PATH = "/rooms/(?P<room_id>[^/]*)/complexity"
PREFIX = FEDERATION_UNSTABLE_PREFIX
async def on_GET(self, origin, content, query, room_id):
store = self.handler.hs.get_datastore()
is_public = await store.is_room_world_readable_or_publicly_joinable(room_id)
if not is_public:
raise SynapseError(404, "Room not found", errcode=Codes.INVALID_PARAM)
complexity = await store.get_room_complexity(room_id)
return 200, complexity
FEDERATION_SERVLET_CLASSES = (
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FederationSendServlet,
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FederationEventServlet,
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FederationStateV1Servlet,
FederationStateIdsServlet,
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FederationBackfillServlet,
FederationQueryServlet,
FederationMakeJoinServlet,
FederationMakeLeaveServlet,
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FederationEventServlet,
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FederationV1SendJoinServlet,
FederationV2SendJoinServlet,
FederationV1SendLeaveServlet,
FederationV2SendLeaveServlet,
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FederationV1InviteServlet,
FederationV2InviteServlet,
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FederationGetMissingEventsServlet,
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FederationEventAuthServlet,
FederationClientKeysQueryServlet,
FederationUserDevicesQueryServlet,
FederationClientKeysClaimServlet,
FederationThirdPartyInviteExchangeServlet,
On3pidBindServlet,
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FederationVersionServlet,
RoomComplexityServlet,
) # type: Tuple[Type[BaseFederationServlet], ...]
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OPENID_SERVLET_CLASSES = (
OpenIdUserInfo,
) # type: Tuple[Type[BaseFederationServlet], ...]
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ROOM_LIST_CLASSES = (PublicRoomList,) # type: Tuple[Type[PublicRoomList], ...]
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GROUP_SERVER_SERVLET_CLASSES = (
FederationGroupsProfileServlet,
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FederationGroupsSummaryServlet,
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FederationGroupsRoomsServlet,
FederationGroupsUsersServlet,
FederationGroupsInvitedUsersServlet,
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FederationGroupsInviteServlet,
FederationGroupsAcceptInviteServlet,
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FederationGroupsJoinServlet,
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FederationGroupsRemoveUserServlet,
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FederationGroupsSummaryRoomsServlet,
FederationGroupsCategoriesServlet,
FederationGroupsCategoryServlet,
FederationGroupsRolesServlet,
FederationGroupsRoleServlet,
FederationGroupsSummaryUsersServlet,
FederationGroupsAddRoomsServlet,
FederationGroupsAddRoomsConfigServlet,
FederationGroupsSettingJoinPolicyServlet,
) # type: Tuple[Type[BaseFederationServlet], ...]
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GROUP_LOCAL_SERVLET_CLASSES = (
FederationGroupsLocalInviteServlet,
FederationGroupsRemoveLocalUserServlet,
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FederationGroupsBulkPublicisedServlet,
) # type: Tuple[Type[BaseFederationServlet], ...]
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GROUP_ATTESTATION_SERVLET_CLASSES = (
FederationGroupsRenewAttestaionServlet,
) # type: Tuple[Type[BaseFederationServlet], ...]
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DEFAULT_SERVLET_GROUPS = (
"federation",
"room_list",
"group_server",
"group_local",
"group_attestation",
"openid",
)
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def register_servlets(hs, resource, authenticator, ratelimiter, servlet_groups=None):
"""Initialize and register servlet classes.
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Will by default register all servlets. For custom behaviour, pass in
a list of servlet_groups to register.
Args:
hs (synapse.server.HomeServer): homeserver
resource (TransportLayerServer): resource class to register to
authenticator (Authenticator): authenticator to use
ratelimiter (util.ratelimitutils.FederationRateLimiter): ratelimiter to use
servlet_groups (list[str], optional): List of servlet groups to register.
Defaults to ``DEFAULT_SERVLET_GROUPS``.
"""
if not servlet_groups:
servlet_groups = DEFAULT_SERVLET_GROUPS
if "federation" in servlet_groups:
for servletclass in FEDERATION_SERVLET_CLASSES:
servletclass(
handler=hs.get_federation_server(),
authenticator=authenticator,
ratelimiter=ratelimiter,
server_name=hs.hostname,
).register(resource)
if "openid" in servlet_groups:
for servletclass in OPENID_SERVLET_CLASSES:
servletclass(
handler=hs.get_federation_server(),
authenticator=authenticator,
ratelimiter=ratelimiter,
server_name=hs.hostname,
).register(resource)
if "room_list" in servlet_groups:
for servletclass in ROOM_LIST_CLASSES:
servletclass(
handler=hs.get_room_list_handler(),
authenticator=authenticator,
ratelimiter=ratelimiter,
server_name=hs.hostname,
allow_access=hs.config.allow_public_rooms_over_federation,
).register(resource)
if "group_server" in servlet_groups:
for servletclass in GROUP_SERVER_SERVLET_CLASSES:
servletclass(
handler=hs.get_groups_server_handler(),
authenticator=authenticator,
ratelimiter=ratelimiter,
server_name=hs.hostname,
).register(resource)
if "group_local" in servlet_groups:
for servletclass in GROUP_LOCAL_SERVLET_CLASSES:
servletclass(
handler=hs.get_groups_local_handler(),
authenticator=authenticator,
ratelimiter=ratelimiter,
server_name=hs.hostname,
).register(resource)
if "group_attestation" in servlet_groups:
for servletclass in GROUP_ATTESTATION_SERVLET_CLASSES:
servletclass(
handler=hs.get_groups_attestation_renewer(),
authenticator=authenticator,
ratelimiter=ratelimiter,
server_name=hs.hostname,
).register(resource)