79 lines
2.2 KiB
Go
79 lines
2.2 KiB
Go
// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package routing
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import (
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"context"
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"net/http"
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"github.com/matrix-org/dendrite/clientapi/jsonerror"
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"github.com/matrix-org/dendrite/roomserver/api"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/gomatrixserverlib/fclient"
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"github.com/matrix-org/util"
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)
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// GetEventAuth returns event auth for the roomID and eventID
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func GetEventAuth(
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ctx context.Context,
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request *fclient.FederationRequest,
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rsAPI api.FederationRoomserverAPI,
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roomID string,
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eventID string,
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) util.JSONResponse {
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// If we don't think we belong to this room then don't waste the effort
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// responding to expensive requests for it.
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if err := ErrorIfLocalServerNotInRoom(ctx, rsAPI, roomID); err != nil {
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return *err
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}
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event, resErr := fetchEvent(ctx, rsAPI, roomID, eventID)
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if resErr != nil {
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return *resErr
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}
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if event.RoomID() != roomID {
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return util.JSONResponse{Code: http.StatusNotFound, JSON: jsonerror.NotFound("event does not belong to this room")}
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}
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resErr = allowedToSeeEvent(ctx, request.Origin(), rsAPI, eventID)
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if resErr != nil {
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return *resErr
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}
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var response api.QueryStateAndAuthChainResponse
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err := rsAPI.QueryStateAndAuthChain(
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ctx,
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&api.QueryStateAndAuthChainRequest{
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RoomID: roomID,
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PrevEventIDs: []string{eventID},
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AuthEventIDs: event.AuthEventIDs(),
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OnlyFetchAuthChain: true,
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},
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&response,
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)
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if err != nil {
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return util.ErrorResponse(err)
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}
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if !response.RoomExists {
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return util.JSONResponse{Code: http.StatusNotFound, JSON: nil}
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}
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: fclient.RespEventAuth{
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AuthEvents: gomatrixserverlib.NewEventJSONsFromHeaderedEvents(response.AuthChainEvents),
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},
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}
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}
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