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Fetch missing auth events, implement QueryMissingAuthPrevEvents, try other servers in room for /event and /get_missing_events (#1450)

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* Try to ask other servers in the room for missing events if the origin won't provide them

* Logging

* More logging

* Implement QueryMissingAuthPrevEvents

* Try to get missing auth events badly

* Use processEvent

* Logging

* Update QueryMissingAuthPrevEvents

* Try to find missing auth events

* Patchy fix for test

* Logging tweaks

* Send auth events as outliers

* Update check in QueryMissingAuthPrevEvents

* Error responses

* More return codes

* Don't return error on reject/soft-fail since it was ultimately handled

* More tweaks

* More error tweaks
This commit is contained in:
Neil Alexander 2020-09-29 13:40:29 +01:00 • committed by GitHub
parent 4ff7ac7b65
commit 738b829a23
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 291 additions and 81 deletions
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98
federationapi/routing/send_test.go
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@ -77,10 +77,11 @@ func (p *testEDUProducer) InputSendToDeviceEvent(
}
type testRoomserverAPI struct {
inputRoomEvents []api.InputRoomEvent
queryStateAfterEvents func(*api.QueryStateAfterEventsRequest) api.QueryStateAfterEventsResponse
queryEventsByID func(req *api.QueryEventsByIDRequest) api.QueryEventsByIDResponse
queryLatestEventsAndState func(*api.QueryLatestEventsAndStateRequest) api.QueryLatestEventsAndStateResponse
inputRoomEvents []api.InputRoomEvent
queryMissingAuthPrevEvents func(*api.QueryMissingAuthPrevEventsRequest) api.QueryMissingAuthPrevEventsResponse
queryStateAfterEvents func(*api.QueryStateAfterEventsRequest) api.QueryStateAfterEventsResponse
queryEventsByID func(req *api.QueryEventsByIDRequest) api.QueryEventsByIDResponse
queryLatestEventsAndState func(*api.QueryLatestEventsAndStateRequest) api.QueryLatestEventsAndStateResponse
}
func (t *testRoomserverAPI) SetFederationSenderAPI(fsAPI fsAPI.FederationSenderInternalAPI) {}
@ -162,6 +163,20 @@ func (t *testRoomserverAPI) QueryStateAfterEvents(
return nil
}
// Query the state after a list of events in a room from the room server.
func (t *testRoomserverAPI) QueryMissingAuthPrevEvents(
ctx context.Context,
request *api.QueryMissingAuthPrevEventsRequest,
response *api.QueryMissingAuthPrevEventsResponse,
) error {
response.RoomVersion = testRoomVersion
res := t.queryMissingAuthPrevEvents(request)
response.RoomExists = res.RoomExists
response.MissingAuthEventIDs = res.MissingAuthEventIDs
response.MissingPrevEventIDs = res.MissingPrevEventIDs
return nil
}
// Query a list of events by event ID.
func (t *testRoomserverAPI) QueryEventsByID(
ctx context.Context,
@ -453,11 +468,11 @@ func assertInputRoomEvents(t *testing.T, got []api.InputRoomEvent, want []gomatr
// to the roomserver. It's the most basic test possible.
func TestBasicTransaction(t *testing.T) {
rsAPI := &testRoomserverAPI{
queryStateAfterEvents: func(req *api.QueryStateAfterEventsRequest) api.QueryStateAfterEventsResponse {
return api.QueryStateAfterEventsResponse{
PrevEventsExist: true,
RoomExists: true,
StateEvents: fromStateTuples(req.StateToFetch, nil),
queryMissingAuthPrevEvents: func(req *api.QueryMissingAuthPrevEventsRequest) api.QueryMissingAuthPrevEventsResponse {
return api.QueryMissingAuthPrevEventsResponse{
RoomExists: true,
MissingAuthEventIDs: []string{},
MissingPrevEventIDs: []string{},
}
},
}
@ -473,14 +488,11 @@ func TestBasicTransaction(t *testing.T) {
// as it does the auth check.
func TestTransactionFailAuthChecks(t *testing.T) {
rsAPI := &testRoomserverAPI{
queryStateAfterEvents: func(req *api.QueryStateAfterEventsRequest) api.QueryStateAfterEventsResponse {
return api.QueryStateAfterEventsResponse{
PrevEventsExist: true,
RoomExists: true,
// omit the create event so auth checks fail
StateEvents: fromStateTuples(req.StateToFetch, []gomatrixserverlib.StateKeyTuple{
{EventType: gomatrixserverlib.MRoomCreate, StateKey: ""},
}),
queryMissingAuthPrevEvents: func(req *api.QueryMissingAuthPrevEventsRequest) api.QueryMissingAuthPrevEventsResponse {
return api.QueryMissingAuthPrevEventsResponse{
RoomExists: true,
MissingAuthEventIDs: []string{"create_event"},
MissingPrevEventIDs: []string{},
}
},
}
@ -504,28 +516,24 @@ func TestTransactionFetchMissingPrevEvents(t *testing.T) {
var rsAPI *testRoomserverAPI // ref here so we can refer to inputRoomEvents inside these functions
rsAPI = &testRoomserverAPI{
queryStateAfterEvents: func(req *api.QueryStateAfterEventsRequest) api.QueryStateAfterEventsResponse {
// we expect this to be called three times:
// - first with input event to realise there's a gap
// - second with the prevEvent to realise there is no gap
// - third with the input event to realise there is no longer a gap
prevEventsExist := false
queryMissingAuthPrevEvents: func(req *api.QueryMissingAuthPrevEventsRequest) api.QueryMissingAuthPrevEventsResponse {
missingPrevEvent := []string{"missing_prev_event"}
if len(req.PrevEventIDs) == 1 {
switch req.PrevEventIDs[0] {
case haveEvent.EventID():
prevEventsExist = true
missingPrevEvent = []string{}
case prevEvent.EventID():
// we only have this event if we've been send prevEvent
if len(rsAPI.inputRoomEvents) == 1 && rsAPI.inputRoomEvents[0].Event.EventID() == prevEvent.EventID() {
prevEventsExist = true
missingPrevEvent = []string{}
}
}
}
return api.QueryStateAfterEventsResponse{
PrevEventsExist: prevEventsExist,
RoomExists: true,
StateEvents: fromStateTuples(req.StateToFetch, nil),
return api.QueryMissingAuthPrevEventsResponse{
RoomExists: true,
MissingAuthEventIDs: []string{},
MissingPrevEventIDs: missingPrevEvent,
}
},
queryLatestEventsAndState: func(req *api.QueryLatestEventsAndStateRequest) api.QueryLatestEventsAndStateResponse {
@ -626,6 +634,38 @@ func TestTransactionFetchMissingStateByStateIDs(t *testing.T) {
StateEvents: stateEvents,
}
},
queryMissingAuthPrevEvents: func(req *api.QueryMissingAuthPrevEventsRequest) api.QueryMissingAuthPrevEventsResponse {
askingForEvent := req.PrevEventIDs[0]
haveEventB := false
haveEventC := false
for _, ev := range rsAPI.inputRoomEvents {
switch ev.Event.EventID() {
case eventB.EventID():
haveEventB = true
case eventC.EventID():
haveEventC = true
}
}
prevEventExists := false
if askingForEvent == eventC.EventID() {
prevEventExists = haveEventC
} else if askingForEvent == eventB.EventID() {
prevEventExists = haveEventB
}
var missingPrevEvent []string
if !prevEventExists {
missingPrevEvent = []string{"test"}
}
return api.QueryMissingAuthPrevEventsResponse{
RoomExists: true,
MissingAuthEventIDs: []string{},
MissingPrevEventIDs: missingPrevEvent,
}
},
queryLatestEventsAndState: func(req *api.QueryLatestEventsAndStateRequest) api.QueryLatestEventsAndStateResponse {
omitTuples := []gomatrixserverlib.StateKeyTuple{
{EventType: gomatrixserverlib.MRoomPowerLevels, StateKey: ""},