dendrite/federationapi/routing/state.go

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// 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.
package routing
import (
"context"
"net/http"
"net/url"
"github.com/matrix-org/dendrite/clientapi/jsonerror"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/roomserver/types"
"github.com/matrix-org/gomatrixserverlib/fclient"
"github.com/matrix-org/util"
)
// GetState returns state events & auth events for the roomID, eventID
func GetState(
ctx context.Context,
request *fclient.FederationRequest,
rsAPI api.FederationRoomserverAPI,
roomID string,
) util.JSONResponse {
eventID, err := parseEventIDParam(request)
if err != nil {
return *err
}
stateEvents, authChain, err := getState(ctx, request, rsAPI, roomID, eventID)
if err != nil {
return *err
}
return util.JSONResponse{Code: http.StatusOK, JSON: &fclient.RespState{
AuthEvents: types.NewEventJSONsFromHeaderedEvents(authChain),
StateEvents: types.NewEventJSONsFromHeaderedEvents(stateEvents),
}}
}
// GetStateIDs returns state event IDs & auth event IDs for the roomID, eventID
func GetStateIDs(
ctx context.Context,
request *fclient.FederationRequest,
rsAPI api.FederationRoomserverAPI,
roomID string,
) util.JSONResponse {
eventID, err := parseEventIDParam(request)
if err != nil {
return *err
}
stateEvents, authEvents, err := getState(ctx, request, rsAPI, roomID, eventID)
if err != nil {
return *err
}
stateEventIDs := getIDsFromEvent(stateEvents)
authEventIDs := getIDsFromEvent(authEvents)
return util.JSONResponse{Code: http.StatusOK, JSON: fclient.RespStateIDs{
StateEventIDs: stateEventIDs,
AuthEventIDs: authEventIDs,
},
}
}
func parseEventIDParam(
request *fclient.FederationRequest,
) (eventID string, resErr *util.JSONResponse) {
URL, err := url.Parse(request.RequestURI())
if err != nil {
response := util.ErrorResponse(err)
resErr = &response
return
}
eventID = URL.Query().Get("event_id")
if eventID == "" {
resErr = &util.JSONResponse{
Code: http.StatusBadRequest,
JSON: jsonerror.MissingArgument("event_id missing"),
}
}
return
}
func getState(
ctx context.Context,
request *fclient.FederationRequest,
rsAPI api.FederationRoomserverAPI,
roomID string,
eventID string,
) (stateEvents, authEvents []*types.HeaderedEvent, errRes *util.JSONResponse) {
// If we don't think we belong to this room then don't waste the effort
// responding to expensive requests for it.
if err := ErrorIfLocalServerNotInRoom(ctx, rsAPI, roomID); err != nil {
return nil, nil, err
}
event, resErr := fetchEvent(ctx, rsAPI, roomID, eventID)
if resErr != nil {
return nil, nil, resErr
}
if event.RoomID() != roomID {
return nil, nil, &util.JSONResponse{Code: http.StatusNotFound, JSON: jsonerror.NotFound("event does not belong to this room")}
}
resErr = allowedToSeeEvent(ctx, request.Origin(), rsAPI, eventID)
if resErr != nil {
return nil, nil, resErr
}
var response api.QueryStateAndAuthChainResponse
err := rsAPI.QueryStateAndAuthChain(
ctx,
&api.QueryStateAndAuthChainRequest{
RoomID: roomID,
Federation for v3/v4 rooms (#954) * Update gomatrixserverlib * Default to room version 4 * Update gomatrixserverlib * Limit prev_events and auth_events * Fix auth_events, prev_events * Fix linter issues * Update gomatrixserverlib * Fix getState * Update sytest-whitelist * Squashed commit of the following: commit 067b87506357c996fd6ddb11271db9469ad4ce80 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Fri Apr 3 14:29:06 2020 +0100 Invites v2 endpoint (#952) * Start converting v1 invite endpoint to v2 * Update gomatrixserverlib * Early federationsender code for sending invites * Sending invites sorta happens now * Populate invite request with stripped state * Remodel a bit, don't reflect received invites * Handle invite_room_state * Handle room versions a bit better * Update gomatrixserverlib * Tweak order in destinationQueue.next * Revert check in processMessage * Tweak federation sender destination queue code a bit * Add comments commit 955244c09298d0e6c870377dad3af2ffa1f5e578 Author: Ben B <benne@klimlive.de> Date: Fri Apr 3 12:40:50 2020 +0200 use custom http client instead of the http DefaultClient (#823) This commit replaces the default client from the http lib with a custom one. The previously used default client doesn't come with a timeout. This could cause unwanted locks. That solution chosen here creates a http client in the base component dendrite with a constant timeout of 30 seconds. If it should be necessary to overwrite this, we could include the timeout in the dendrite configuration. Here it would be a good idea to extend the type "Address" by a timeout and create an http client for each service. Closes #820 Signed-off-by: Benedikt Bongartz <benne@klimlive.de> Co-authored-by: Kegsay <kegan@matrix.org> * Update sytest-whitelist, sytest-blacklist * Update go.mod/go.sum * Add some error wrapping for debug * Add a NOTSPEC to common/events.go * Perform state resolution at send_join * Set default room version to v2 again * Tweak GetCapabilities * Add comments to ResolveConflictsAdhoc * Update sytest-blacklist * go mod tidy * Update sytest-whitelist, sytest-blacklist * Update versions * Updates from review comments * Update sytest-blacklist, sytest-whitelist * Check room versions compatible at make_join, add some comments, update gomatrixserverlib, other tweaks * Set default room version back to v2 * Update gomatrixserverlib, sytest-whitelist
2020-04-09 15:46:06 +01:00
PrevEventIDs: []string{eventID},
2020-06-11 15:07:16 +01:00
AuthEventIDs: event.AuthEventIDs(),
},
&response,
)
if err != nil {
resErr := util.ErrorResponse(err)
return nil, nil, &resErr
}
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switch {
case !response.RoomExists:
return nil, nil, &util.JSONResponse{
Code: http.StatusNotFound,
JSON: jsonerror.NotFound("Room not found"),
}
case !response.StateKnown:
return nil, nil, &util.JSONResponse{
Code: http.StatusNotFound,
JSON: jsonerror.NotFound("State not known"),
}
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case response.IsRejected:
return nil, nil, &util.JSONResponse{
Code: http.StatusNotFound,
JSON: jsonerror.NotFound("Event not found"),
}
}
return response.StateEvents, response.AuthChainEvents, nil
}
func getIDsFromEvent(events []*types.HeaderedEvent) []string {
IDs := make([]string, len(events))
for i := range events {
IDs[i] = events[i].EventID()
}
return IDs
}