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Merge branch 'develop' of github.com:matrix-org/synapse into neilj/server_notices_on_blocking

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This commit is contained in:
Neil Johnson 2018-08-17 14:34:10 +01:00
commit 3ee57bdcbb
9 changed files with 75 additions and 24 deletions
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1
changelog.d/3707.misc Normal file
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@ -0,0 +1 @@
add new error type ResourceLimit

11
synapse/api/auth.py
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@ -25,7 +25,7 @@ from twisted.internet import defer
import synapse.types
from synapse import event_auth
from synapse.api.constants import EventTypes, JoinRules, Membership
from synapse.api.errors import AuthError, Codes
from synapse.api.errors import AuthError, Codes, ResourceLimitError
from synapse.types import UserID
from synapse.util.caches import CACHE_SIZE_FACTOR, register_cache
from synapse.util.caches.lrucache import LruCache
@ -784,10 +784,11 @@ class Auth(object):
MAU cohort
"""
if self.hs.config.hs_disabled:
raise AuthError(
raise ResourceLimitError(
403, self.hs.config.hs_disabled_message,
errcode=Codes.RESOURCE_LIMIT_EXCEED,
admin_uri=self.hs.config.admin_uri,
limit_type=self.hs.config.hs_disabled_limit_type
)
if self.hs.config.limit_usage_by_mau is True:
# If the user is already part of the MAU cohort
@ -798,8 +799,10 @@ class Auth(object):
# Else if there is no room in the MAU bucket, bail
current_mau = yield self.store.get_monthly_active_count()
if current_mau >= self.hs.config.max_mau_value:
raise AuthError(
raise ResourceLimitError(
403, "Monthly Active User Limit Exceeded",
admin_uri=self.hs.config.admin_uri,
errcode=Codes.RESOURCE_LIMIT_EXCEED
errcode=Codes.RESOURCE_LIMIT_EXCEED,
limit_type="monthly_active_user"
)

23
synapse/api/errors.py
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@ -224,15 +224,34 @@ class NotFoundError(SynapseError):
class AuthError(SynapseError):
"""An error raised when there was a problem authorising an event."""
def __init__(self, code, msg, errcode=Codes.FORBIDDEN, admin_uri=None):
def __init__(self, *args, **kwargs):
if "errcode" not in kwargs:
kwargs["errcode"] = Codes.FORBIDDEN
super(AuthError, self).__init__(*args, **kwargs)
class ResourceLimitError(SynapseError):
"""
Any error raised when there is a problem with resource usage.
For instance, the monthly active user limit for the server has been exceeded
"""
def __init__(
self, code, msg,
errcode=Codes.RESOURCE_LIMIT_EXCEED,
admin_uri=None,
limit_type=None,
):
self.admin_uri = admin_uri
super(AuthError, self).__init__(code, msg, errcode=errcode)
self.limit_type = limit_type
super(ResourceLimitError, self).__init__(code, msg, errcode=errcode)
def error_dict(self):
return cs_error(
self.msg,
self.errcode,
admin_uri=self.admin_uri,
limit_type=self.limit_type
)

27
synapse/config/server.py
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@ -81,6 +81,7 @@ class ServerConfig(Config):
# Options to disable HS
self.hs_disabled = config.get("hs_disabled", False)
self.hs_disabled_message = config.get("hs_disabled_message", "")
self.hs_disabled_limit_type = config.get("hs_disabled_limit_type", "")
# Admin uri to direct users at should their instance become blocked
# due to resource constraints
@ -340,6 +341,32 @@ class ServerConfig(Config):
# - port: 9000
# bind_addresses: ['::1', '127.0.0.1']
# type: manhole
# Homeserver blocking
#
# How to reach the server admin, used in ResourceLimitError
# admin_uri: 'mailto:admin@server.com'
#
# Global block config
#
# hs_disabled: False
# hs_disabled_message: 'Human readable reason for why the HS is blocked'
# hs_disabled_limit_type: 'error code(str), to help clients decode reason'
#
# Monthly Active User Blocking
#
# Enables monthly active user checking
# limit_usage_by_mau: False
# max_mau_value: 50
#
# Sometimes the server admin will want to ensure certain accounts are
# never blocked by mau checking. These accounts are specified here.
#
# mau_limit_reserved_threepids:
# - medium: 'email'
# address: 'reserved_user@example.com'
""" % locals()
def read_arguments(self, args):

6
tests/api/test_auth.py
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@ -21,7 +21,7 @@ from twisted.internet import defer
import synapse.handlers.auth
from synapse.api.auth import Auth
from synapse.api.errors import AuthError, Codes
from synapse.api.errors import AuthError, Codes, ResourceLimitError
from synapse.types import UserID
from tests import unittest
@ -455,7 +455,7 @@ class AuthTestCase(unittest.TestCase):
return_value=defer.succeed(lots_of_users)
)
with self.assertRaises(AuthError) as e:
with self.assertRaises(ResourceLimitError) as e:
yield self.auth.check_auth_blocking()
self.assertEquals(e.exception.admin_uri, self.hs.config.admin_uri)
self.assertEquals(e.exception.errcode, Codes.RESOURCE_LIMIT_EXCEED)
@ -471,7 +471,7 @@ class AuthTestCase(unittest.TestCase):
def test_hs_disabled(self):
self.hs.config.hs_disabled = True
self.hs.config.hs_disabled_message = "Reason for being disabled"
with self.assertRaises(AuthError) as e:
with self.assertRaises(ResourceLimitError) as e:
yield self.auth.check_auth_blocking()
self.assertEquals(e.exception.admin_uri, self.hs.config.admin_uri)
self.assertEquals(e.exception.errcode, Codes.RESOURCE_LIMIT_EXCEED)

10
tests/handlers/test_auth.py
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@ -20,7 +20,7 @@ from twisted.internet import defer
import synapse
import synapse.api.errors
from synapse.api.errors import AuthError
from synapse.api.errors import ResourceLimitError
from synapse.handlers.auth import AuthHandler
from tests import unittest
@ -130,13 +130,13 @@ class AuthTestCase(unittest.TestCase):
return_value=defer.succeed(self.large_number_of_users)
)
with self.assertRaises(AuthError):
with self.assertRaises(ResourceLimitError):
yield self.auth_handler.get_access_token_for_user_id('user_a')
self.hs.get_datastore().get_monthly_active_count = Mock(
return_value=defer.succeed(self.large_number_of_users)
)
with self.assertRaises(AuthError):
with self.assertRaises(ResourceLimitError):
yield self.auth_handler.validate_short_term_login_token_and_get_user_id(
self._get_macaroon().serialize()
)
@ -149,13 +149,13 @@ class AuthTestCase(unittest.TestCase):
self.hs.get_datastore().get_monthly_active_count = Mock(
return_value=defer.succeed(self.hs.config.max_mau_value)
)
with self.assertRaises(AuthError):
with self.assertRaises(ResourceLimitError):
yield self.auth_handler.get_access_token_for_user_id('user_a')
self.hs.get_datastore().get_monthly_active_count = Mock(
return_value=defer.succeed(self.hs.config.max_mau_value)
)
with self.assertRaises(AuthError):
with self.assertRaises(ResourceLimitError):
yield self.auth_handler.validate_short_term_login_token_and_get_user_id(
self._get_macaroon().serialize()
)

14
tests/handlers/test_register.py
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@ -17,7 +17,7 @@ from mock import Mock
from twisted.internet import defer
from synapse.api.errors import AuthError
from synapse.api.errors import ResourceLimitError
from synapse.handlers.register import RegistrationHandler
from synapse.types import UserID, create_requester
@ -109,13 +109,13 @@ class RegistrationTestCase(unittest.TestCase):
self.store.get_monthly_active_count = Mock(
return_value=defer.succeed(self.lots_of_users)
)
with self.assertRaises(AuthError):
with self.assertRaises(ResourceLimitError):
yield self.handler.get_or_create_user("requester", 'b', "display_name")
self.store.get_monthly_active_count = Mock(
return_value=defer.succeed(self.hs.config.max_mau_value)
)
with self.assertRaises(AuthError):
with self.assertRaises(ResourceLimitError):
yield self.handler.get_or_create_user("requester", 'b', "display_name")
@defer.inlineCallbacks
@ -124,13 +124,13 @@ class RegistrationTestCase(unittest.TestCase):
self.store.get_monthly_active_count = Mock(
return_value=defer.succeed(self.lots_of_users)
)
with self.assertRaises(AuthError):
with self.assertRaises(ResourceLimitError):
yield self.handler.register(localpart="local_part")
self.store.get_monthly_active_count = Mock(
return_value=defer.succeed(self.hs.config.max_mau_value)
)
with self.assertRaises(AuthError):
with self.assertRaises(ResourceLimitError):
yield self.handler.register(localpart="local_part")
@defer.inlineCallbacks
@ -139,11 +139,11 @@ class RegistrationTestCase(unittest.TestCase):
self.store.get_monthly_active_count = Mock(
return_value=defer.succeed(self.lots_of_users)
)
with self.assertRaises(AuthError):
with self.assertRaises(ResourceLimitError):
yield self.handler.register_saml2(localpart="local_part")
self.store.get_monthly_active_count = Mock(
return_value=defer.succeed(self.hs.config.max_mau_value)
)
with self.assertRaises(AuthError):
with self.assertRaises(ResourceLimitError):
yield self.handler.register_saml2(localpart="local_part")

6
tests/handlers/test_sync.py
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@ -14,7 +14,7 @@
# limitations under the License.
from twisted.internet import defer
from synapse.api.errors import AuthError, Codes
from synapse.api.errors import Codes, ResourceLimitError
from synapse.api.filtering import DEFAULT_FILTER_COLLECTION
from synapse.handlers.sync import SyncConfig, SyncHandler
from synapse.types import UserID
@ -49,7 +49,7 @@ class SyncTestCase(tests.unittest.TestCase):
# Test that global lock works
self.hs.config.hs_disabled = True
with self.assertRaises(AuthError) as e:
with self.assertRaises(ResourceLimitError) as e:
yield self.sync_handler.wait_for_sync_for_user(sync_config)
self.assertEquals(e.exception.errcode, Codes.RESOURCE_LIMIT_EXCEED)
@ -57,7 +57,7 @@ class SyncTestCase(tests.unittest.TestCase):
sync_config = self._generate_sync_config(user_id2)
with self.assertRaises(AuthError) as e:
with self.assertRaises(ResourceLimitError) as e:
yield self.sync_handler.wait_for_sync_for_user(sync_config)
self.assertEquals(e.exception.errcode, Codes.RESOURCE_LIMIT_EXCEED)

1
tests/utils.py
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@ -137,6 +137,7 @@ def setup_test_homeserver(
config.limit_usage_by_mau = False
config.hs_disabled = False
config.hs_disabled_message = ""
config.hs_disabled_limit_type = ""
config.max_mau_value = 50
config.mau_limits_reserved_threepids = []
config.admin_uri = None