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Configurable limits on avatars (#11846)

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Only allow files which file size and content types match configured
limits to be set as avatar.

Most of the inspiration from the non-test code comes from matrix-org/synapse-dinsic#19
This commit is contained in:
Brendan Abolivier 2022-01-28 14:41:33 +00:00 • committed by GitHub
parent 6d482ba259
commit bf60da1a60
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7 changed files with 363 additions and 2 deletions
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156
tests/rest/client/test_profile.py
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@ -13,8 +13,12 @@
# limitations under the License.
"""Tests REST events for /profile paths."""
from typing import Any, Dict
from synapse.api.errors import Codes
from synapse.rest import admin
from synapse.rest.client import login, profile, room
from synapse.types import UserID
from tests import unittest
@ -25,6 +29,7 @@ class ProfileTestCase(unittest.HomeserverTestCase):
admin.register_servlets_for_client_rest_resource,
login.register_servlets,
profile.register_servlets,
room.register_servlets,
]
def make_homeserver(self, reactor, clock):
@ -150,6 +155,157 @@ class ProfileTestCase(unittest.HomeserverTestCase):
self.assertEqual(channel.code, 200, channel.result)
return channel.json_body.get("avatar_url")
@unittest.override_config({"max_avatar_size": 50})
def test_avatar_size_limit_global(self):
"""Tests that the maximum size limit for avatars is enforced when updating a
global profile.
"""
self._setup_local_files(
{
"small": {"size": 40},
"big": {"size": 60},
}
)
channel = self.make_request(
"PUT",
f"/profile/{self.owner}/avatar_url",
content={"avatar_url": "mxc://test/big"},
access_token=self.owner_tok,
)
self.assertEqual(channel.code, 403, channel.result)
self.assertEqual(
channel.json_body["errcode"], Codes.FORBIDDEN, channel.json_body
)
channel = self.make_request(
"PUT",
f"/profile/{self.owner}/avatar_url",
content={"avatar_url": "mxc://test/small"},
access_token=self.owner_tok,
)
self.assertEqual(channel.code, 200, channel.result)
@unittest.override_config({"max_avatar_size": 50})
def test_avatar_size_limit_per_room(self):
"""Tests that the maximum size limit for avatars is enforced when updating a
per-room profile.
"""
self._setup_local_files(
{
"small": {"size": 40},
"big": {"size": 60},
}
)
room_id = self.helper.create_room_as(tok=self.owner_tok)
channel = self.make_request(
"PUT",
f"/rooms/{room_id}/state/m.room.member/{self.owner}",
content={"membership": "join", "avatar_url": "mxc://test/big"},
access_token=self.owner_tok,
)
self.assertEqual(channel.code, 403, channel.result)
self.assertEqual(
channel.json_body["errcode"], Codes.FORBIDDEN, channel.json_body
)
channel = self.make_request(
"PUT",
f"/rooms/{room_id}/state/m.room.member/{self.owner}",
content={"membership": "join", "avatar_url": "mxc://test/small"},
access_token=self.owner_tok,
)
self.assertEqual(channel.code, 200, channel.result)
@unittest.override_config({"allowed_avatar_mimetypes": ["image/png"]})
def test_avatar_allowed_mime_type_global(self):
"""Tests that the MIME type whitelist for avatars is enforced when updating a
global profile.
"""
self._setup_local_files(
{
"good": {"mimetype": "image/png"},
"bad": {"mimetype": "application/octet-stream"},
}
)
channel = self.make_request(
"PUT",
f"/profile/{self.owner}/avatar_url",
content={"avatar_url": "mxc://test/bad"},
access_token=self.owner_tok,
)
self.assertEqual(channel.code, 403, channel.result)
self.assertEqual(
channel.json_body["errcode"], Codes.FORBIDDEN, channel.json_body
)
channel = self.make_request(
"PUT",
f"/profile/{self.owner}/avatar_url",
content={"avatar_url": "mxc://test/good"},
access_token=self.owner_tok,
)
self.assertEqual(channel.code, 200, channel.result)
@unittest.override_config({"allowed_avatar_mimetypes": ["image/png"]})
def test_avatar_allowed_mime_type_per_room(self):
"""Tests that the MIME type whitelist for avatars is enforced when updating a
per-room profile.
"""
self._setup_local_files(
{
"good": {"mimetype": "image/png"},
"bad": {"mimetype": "application/octet-stream"},
}
)
room_id = self.helper.create_room_as(tok=self.owner_tok)
channel = self.make_request(
"PUT",
f"/rooms/{room_id}/state/m.room.member/{self.owner}",
content={"membership": "join", "avatar_url": "mxc://test/bad"},
access_token=self.owner_tok,
)
self.assertEqual(channel.code, 403, channel.result)
self.assertEqual(
channel.json_body["errcode"], Codes.FORBIDDEN, channel.json_body
)
channel = self.make_request(
"PUT",
f"/rooms/{room_id}/state/m.room.member/{self.owner}",
content={"membership": "join", "avatar_url": "mxc://test/good"},
access_token=self.owner_tok,
)
self.assertEqual(channel.code, 200, channel.result)
def _setup_local_files(self, names_and_props: Dict[str, Dict[str, Any]]):
"""Stores metadata about files in the database.
Args:
names_and_props: A dictionary with one entry per file, with the key being the
file's name, and the value being a dictionary of properties. Supported
properties are "mimetype" (for the file's type) and "size" (for the
file's size).
"""
store = self.hs.get_datastore()
for name, props in names_and_props.items():
self.get_success(
store.store_local_media(
media_id=name,
media_type=props.get("mimetype", "image/png"),
time_now_ms=self.clock.time_msec(),
upload_name=None,
media_length=props.get("size", 50),
user_id=UserID.from_string("@rin:test"),
)
)
class ProfilesRestrictedTestCase(unittest.HomeserverTestCase):