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Merge pull request #1175 from matrix-org/luke/feature-configurable-as-rate-limiting

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Allow Configurable Rate Limiting Per AS
This commit is contained in:
Luke Barnard 2016-10-20 16:21:10 +01:00 committed by GitHub
parent 78c083f159 6fdd31915b
commit e01a1bc92d
5 changed files with 35 additions and 12 deletions
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17
synapse/api/auth.py
View file

@ -603,10 +603,12 @@ class Auth(object):
"""
# Can optionally look elsewhere in the request (e.g. headers)
try:
user_id = yield self._get_appservice_user_id(request)
user_id, app_service = yield self._get_appservice_user_id(request)
if user_id:
request.authenticated_entity = user_id
defer.returnValue(synapse.types.create_requester(user_id))
defer.returnValue(
synapse.types.create_requester(user_id, app_service=app_service)
)
access_token = get_access_token_from_request(
request, self.TOKEN_NOT_FOUND_HTTP_STATUS
@ -644,7 +646,8 @@ class Auth(object):
request.authenticated_entity = user.to_string()
defer.returnValue(synapse.types.create_requester(
user, token_id, is_guest, device_id))
user, token_id, is_guest, device_id, app_service=app_service)
)
except KeyError:
raise AuthError(
self.TOKEN_NOT_FOUND_HTTP_STATUS, "Missing access token.",
@ -659,14 +662,14 @@ class Auth(object):
)
)
if app_service is None:
defer.returnValue(None)
defer.returnValue((None, None))
if "user_id" not in request.args:
defer.returnValue(app_service.sender)
defer.returnValue((app_service.sender, app_service))
user_id = request.args["user_id"][0]
if app_service.sender == user_id:
defer.returnValue(app_service.sender)
defer.returnValue((app_service.sender, app_service))
if not app_service.is_interested_in_user(user_id):
raise AuthError(
@ -678,7 +681,7 @@ class Auth(object):
403,
"Application service has not registered this user"
)
defer.returnValue(user_id)
defer.returnValue((user_id, app_service))
@defer.inlineCallbacks
def get_user_by_access_token(self, token, rights="access"):

7
synapse/appservice/__init__.py
View file

@ -81,7 +81,7 @@ class ApplicationService(object):
NS_LIST = [NS_USERS, NS_ALIASES, NS_ROOMS]
def __init__(self, token, url=None, namespaces=None, hs_token=None,
sender=None, id=None, protocols=None):
sender=None, id=None, protocols=None, rate_limited=True):
self.token = token
self.url = url
self.hs_token = hs_token
@ -95,6 +95,8 @@ class ApplicationService(object):
else:
self.protocols = set()
self.rate_limited = rate_limited
def _check_namespaces(self, namespaces):
# Sanity check that it is of the form:
# {
@ -234,5 +236,8 @@ class ApplicationService(object):
def is_exclusive_room(self, room_id):
return self._is_exclusive(ApplicationService.NS_ROOMS, room_id)
def is_rate_limited(self):
return self.rate_limited
def __str__(self):
return "ApplicationService: %s" % (self.__dict__,)

6
synapse/config/appservice.py
View file

@ -110,6 +110,11 @@ def _load_appservice(hostname, as_info, config_filename):
user = UserID(localpart, hostname)
user_id = user.to_string()
# Rate limiting for users of this AS is on by default (excludes sender)
rate_limited = True
if isinstance(as_info.get("rate_limited"), bool):
rate_limited = as_info.get("rate_limited")
# namespace checks
if not isinstance(as_info.get("namespaces"), dict):
raise KeyError("Requires 'namespaces' object.")
@ -155,4 +160,5 @@ def _load_appservice(hostname, as_info, config_filename):
sender=user_id,
id=as_info["id"],
protocols=protocols,
rate_limited=rate_limited
)

6
synapse/handlers/_base.py
View file

@ -57,10 +57,16 @@ class BaseHandler(object):
time_now = self.clock.time()
user_id = requester.user.to_string()
# The AS user itself is never rate limited.
app_service = self.store.get_app_service_by_user_id(user_id)
if app_service is not None:
return # do not ratelimit app service senders
# Disable rate limiting of users belonging to any AS that is configured
# not to be rate limited in its registration file (rate_limited: true|false).
if requester.app_service and not requester.app_service.is_rate_limited():
return
allowed, time_allowed = self.ratelimiter.send_message(
user_id, time_now,
msg_rate_hz=self.hs.config.rc_messages_per_second,

11
synapse/types.py
View file

@ -18,8 +18,9 @@ from synapse.api.errors import SynapseError
from collections import namedtuple
Requester = namedtuple("Requester",
["user", "access_token_id", "is_guest", "device_id"])
Requester = namedtuple("Requester", [
"user", "access_token_id", "is_guest", "device_id", "app_service",
])
"""
Represents the user making a request
@ -29,11 +30,12 @@ Attributes:
request, or None if it came via the appservice API or similar
is_guest (bool): True if the user making this request is a guest user
device_id (str|None): device_id which was set at authentication time
app_service (ApplicationService|None): the AS requesting on behalf of the user
"""
def create_requester(user_id, access_token_id=None, is_guest=False,
device_id=None):
device_id=None, app_service=None):
"""
Create a new ``Requester`` object
@ -43,13 +45,14 @@ def create_requester(user_id, access_token_id=None, is_guest=False,
request, or None if it came via the appservice API or similar
is_guest (bool): True if the user making this request is a guest user
device_id (str|None): device_id which was set at authentication time
app_service (ApplicationService|None): the AS requesting on behalf of the user
Returns:
Requester
"""
if not isinstance(user_id, UserID):
user_id = UserID.from_string(user_id)
return Requester(user_id, access_token_id, is_guest, device_id)
return Requester(user_id, access_token_id, is_guest, device_id, app_service)
def get_domain_from_id(string):