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# Copyright 2020 The Matrix.org Foundation C.I.C.
#
# 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 synapse.api.errors import Codes
from synapse.events.utils import CANONICALJSON_MAX_INT, CANONICALJSON_MIN_INT
from synapse.rest import admin
from synapse.rest.client import login, room, sync
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from tests.unittest import HomeserverTestCase
class PowerLevelsTestCase(HomeserverTestCase):
"""Tests that power levels are enforced in various situations"""
servlets = [
admin.register_servlets,
room.register_servlets,
login.register_servlets,
sync.register_servlets,
]
def make_homeserver(self, reactor, clock):
config = self.default_config()
return self.setup_test_homeserver(config=config)
def prepare(self, reactor, clock, hs):
# register a room admin, moderator and regular user
self.admin_user_id = self.register_user("admin", "pass")
self.admin_access_token = self.login("admin", "pass")
self.mod_user_id = self.register_user("mod", "pass")
self.mod_access_token = self.login("mod", "pass")
self.user_user_id = self.register_user("user", "pass")
self.user_access_token = self.login("user", "pass")
# Create a room
self.room_id = self.helper.create_room_as(
self.admin_user_id, tok=self.admin_access_token
)
# Invite the other users
self.helper.invite(
room=self.room_id,
src=self.admin_user_id,
tok=self.admin_access_token,
targ=self.mod_user_id,
)
self.helper.invite(
room=self.room_id,
src=self.admin_user_id,
tok=self.admin_access_token,
targ=self.user_user_id,
)
# Make the other users join the room
self.helper.join(
room=self.room_id, user=self.mod_user_id, tok=self.mod_access_token
)
self.helper.join(
room=self.room_id, user=self.user_user_id, tok=self.user_access_token
)
# Mod the mod
room_power_levels = self.helper.get_state(
self.room_id,
"m.room.power_levels",
tok=self.admin_access_token,
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)
# Update existing power levels with mod at PL50
room_power_levels["users"].update({self.mod_user_id: 50})
self.helper.send_state(
self.room_id,
"m.room.power_levels",
room_power_levels,
tok=self.admin_access_token,
)
def test_non_admins_cannot_enable_room_encryption(self):
# have the mod try to enable room encryption
self.helper.send_state(
self.room_id,
"m.room.encryption",
{"algorithm": "m.megolm.v1.aes-sha2"},
tok=self.mod_access_token,
expect_code=403, # expect failure
)
# have the user try to enable room encryption
self.helper.send_state(
self.room_id,
"m.room.encryption",
{"algorithm": "m.megolm.v1.aes-sha2"},
tok=self.user_access_token,
expect_code=403, # expect failure
)
def test_non_admins_cannot_send_server_acl(self):
# have the mod try to send a server ACL
self.helper.send_state(
self.room_id,
"m.room.server_acl",
{
"allow": ["*"],
"allow_ip_literals": False,
"deny": ["*.evil.com", "evil.com"],
},
tok=self.mod_access_token,
expect_code=403, # expect failure
)
# have the user try to send a server ACL
self.helper.send_state(
self.room_id,
"m.room.server_acl",
{
"allow": ["*"],
"allow_ip_literals": False,
"deny": ["*.evil.com", "evil.com"],
},
tok=self.user_access_token,
expect_code=403, # expect failure
)
def test_non_admins_cannot_tombstone_room(self):
# Create another room that will serve as our "upgraded room"
self.upgraded_room_id = self.helper.create_room_as(
self.admin_user_id, tok=self.admin_access_token
)
# have the mod try to send a tombstone event
self.helper.send_state(
self.room_id,
"m.room.tombstone",
{
"body": "This room has been replaced",
"replacement_room": self.upgraded_room_id,
},
tok=self.mod_access_token,
expect_code=403, # expect failure
)
# have the user try to send a tombstone event
self.helper.send_state(
self.room_id,
"m.room.tombstone",
{
"body": "This room has been replaced",
"replacement_room": self.upgraded_room_id,
},
tok=self.user_access_token,
expect_code=403, # expect failure
)
def test_admins_can_enable_room_encryption(self):
# have the admin try to enable room encryption
self.helper.send_state(
self.room_id,
"m.room.encryption",
{"algorithm": "m.megolm.v1.aes-sha2"},
tok=self.admin_access_token,
expect_code=200, # expect success
)
def test_admins_can_send_server_acl(self):
# have the admin try to send a server ACL
self.helper.send_state(
self.room_id,
"m.room.server_acl",
{
"allow": ["*"],
"allow_ip_literals": False,
"deny": ["*.evil.com", "evil.com"],
},
tok=self.admin_access_token,
expect_code=200, # expect success
)
def test_admins_can_tombstone_room(self):
# Create another room that will serve as our "upgraded room"
self.upgraded_room_id = self.helper.create_room_as(
self.admin_user_id, tok=self.admin_access_token
)
# have the admin try to send a tombstone event
self.helper.send_state(
self.room_id,
"m.room.tombstone",
{
"body": "This room has been replaced",
"replacement_room": self.upgraded_room_id,
},
tok=self.admin_access_token,
expect_code=200, # expect success
)
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def test_cannot_set_string_power_levels(self):
room_power_levels = self.helper.get_state(
self.room_id,
"m.room.power_levels",
tok=self.admin_access_token,
)
# Update existing power levels with user at PL "0"
room_power_levels["users"].update({self.user_user_id: "0"})
body = self.helper.send_state(
self.room_id,
"m.room.power_levels",
room_power_levels,
tok=self.admin_access_token,
expect_code=400, # expect failure
)
self.assertEqual(
body["errcode"],
Codes.BAD_JSON,
body,
)
def test_cannot_set_unsafe_large_power_levels(self):
room_power_levels = self.helper.get_state(
self.room_id,
"m.room.power_levels",
tok=self.admin_access_token,
)
# Update existing power levels with user at PL above the max safe integer
room_power_levels["users"].update(
{self.user_user_id: CANONICALJSON_MAX_INT + 1}
)
body = self.helper.send_state(
self.room_id,
"m.room.power_levels",
room_power_levels,
tok=self.admin_access_token,
expect_code=400, # expect failure
)
self.assertEqual(
body["errcode"],
Codes.BAD_JSON,
body,
)
def test_cannot_set_unsafe_small_power_levels(self):
room_power_levels = self.helper.get_state(
self.room_id,
"m.room.power_levels",
tok=self.admin_access_token,
)
# Update existing power levels with user at PL below the minimum safe integer
room_power_levels["users"].update(
{self.user_user_id: CANONICALJSON_MIN_INT - 1}
)
body = self.helper.send_state(
self.room_id,
"m.room.power_levels",
room_power_levels,
tok=self.admin_access_token,
expect_code=400, # expect failure
)
self.assertEqual(
body["errcode"],
Codes.BAD_JSON,
body,
)