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Do not reject `/sync` requests with unrecognised filter fields (#14369) 

For forward compatibility, Synapse needs to ignore fields it does not
recognise instead of raising an error.

Fixes #14365.

Signed-off-by: Sean Quah <seanq@matrix.org>
This commit is contained in:
Sean Quah 2022-11-07 13:49:31 +00:00 committed by GitHub
parent 233fc6e279
commit e980982b59
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 24 additions and 6 deletions
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1
changelog.d/14369.bugfix Normal file
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@ -0,0 +1 @@
Fix a long-standing bug where Synapse would raise an error when encountering an unrecognised field in a `/sync` filter, instead of ignoring it for forward compatibility.

8
synapse/api/filtering.py
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@ -43,7 +43,7 @@ if TYPE_CHECKING:
from synapse.server import HomeServer from synapse.server import HomeServer
FILTER_SCHEMA = { FILTER_SCHEMA = {
"additionalProperties": False, "additionalProperties": True, # Allow new fields for forward compatibility
"type": "object", "type": "object",
"properties": { "properties": {
"limit": {"type": "number"}, "limit": {"type": "number"},
@ -63,7 +63,7 @@ FILTER_SCHEMA = {
} }
ROOM_FILTER_SCHEMA = { ROOM_FILTER_SCHEMA = {
"additionalProperties": False, "additionalProperties": True, # Allow new fields for forward compatibility
"type": "object", "type": "object",
"properties": { "properties": {
"not_rooms": {"$ref": "#/definitions/room_id_array"}, "not_rooms": {"$ref": "#/definitions/room_id_array"},
@ -77,7 +77,7 @@ ROOM_FILTER_SCHEMA = {
} }
ROOM_EVENT_FILTER_SCHEMA = { ROOM_EVENT_FILTER_SCHEMA = {
"additionalProperties": False, "additionalProperties": True, # Allow new fields for forward compatibility
"type": "object", "type": "object",
"properties": { "properties": {
"limit": {"type": "number"}, "limit": {"type": "number"},
@ -143,7 +143,7 @@ USER_FILTER_SCHEMA = {
}, },
}, },
}, },
"additionalProperties": False, "additionalProperties": True, # Allow new fields for forward compatibility
} }

21
tests/api/test_filtering.py
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@ -46,19 +46,36 @@ class FilteringTestCase(unittest.HomeserverTestCase):
self.datastore = hs.get_datastores().main self.datastore = hs.get_datastores().main
def test_errors_on_invalid_filters(self): def test_errors_on_invalid_filters(self):
# See USER_FILTER_SCHEMA for the filter schema.
invalid_filters = [ invalid_filters = [
{"boom": {}}, # `account_data` must be a dictionary
{"account_data": "Hello World"}, {"account_data": "Hello World"},
# `event_fields` entries must not contain backslashes
{"event_fields": [r"\\foo"]}, {"event_fields": [r"\\foo"]},
{"room": {"timeline": {"limit": 0}, "state": {"not_bars": ["*"]}}}, # `event_format` must be "client" or "federation"
{"event_format": "other"}, {"event_format": "other"},
# `not_rooms` must contain valid room IDs
{"room": {"not_rooms": ["#foo:pik-test"]}}, {"room": {"not_rooms": ["#foo:pik-test"]}},
# `senders` must contain valid user IDs
{"presence": {"senders": ["@bar;pik.test.com"]}}, {"presence": {"senders": ["@bar;pik.test.com"]}},
] ]
for filter in invalid_filters: for filter in invalid_filters:
with self.assertRaises(SynapseError): with self.assertRaises(SynapseError):
self.filtering.check_valid_filter(filter) self.filtering.check_valid_filter(filter)
def test_ignores_unknown_filter_fields(self):
# For forward compatibility, we must ignore unknown filter fields.
# See USER_FILTER_SCHEMA for the filter schema.
filters = [
{"org.matrix.msc9999.future_option": True},
{"presence": {"org.matrix.msc9999.future_option": True}},
{"room": {"org.matrix.msc9999.future_option": True}},
{"room": {"timeline": {"org.matrix.msc9999.future_option": True}}},
]
for filter in filters:
self.filtering.check_valid_filter(filter)
# Must not raise.
def test_valid_filters(self): def test_valid_filters(self):
valid_filters = [ valid_filters = [
{ {