mirror of
https://github.com/1f349/dendrite.git
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231 lines
7.3 KiB
Go
231 lines
7.3 KiB
Go
// Copyright 2017 Vector Creations Ltd
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//
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// 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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"encoding/json"
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"fmt"
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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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roomserverVersion "github.com/matrix-org/dendrite/roomserver/version"
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"github.com/matrix-org/dendrite/setup/config"
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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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// InviteV2 implements /_matrix/federation/v2/invite/{roomID}/{eventID}
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func InviteV2(
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httpReq *http.Request,
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request *gomatrixserverlib.FederationRequest,
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roomID string,
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eventID string,
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cfg *config.FederationAPI,
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rsAPI api.FederationRoomserverAPI,
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keys gomatrixserverlib.JSONVerifier,
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) util.JSONResponse {
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inviteReq := gomatrixserverlib.InviteV2Request{}
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err := json.Unmarshal(request.Content(), &inviteReq)
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switch e := err.(type) {
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case gomatrixserverlib.UnsupportedRoomVersionError:
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.UnsupportedRoomVersion(
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fmt.Sprintf("Room version %q is not supported by this server.", e.Version),
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),
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}
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case gomatrixserverlib.BadJSONError:
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON(err.Error()),
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}
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case nil:
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return processInvite(
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httpReq.Context(), true, inviteReq.Event(), inviteReq.RoomVersion(), inviteReq.InviteRoomState(), roomID, eventID, cfg, rsAPI, keys,
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)
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default:
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.NotJSON("The request body could not be decoded into an invite request. " + err.Error()),
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}
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}
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}
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// InviteV1 implements /_matrix/federation/v1/invite/{roomID}/{eventID}
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func InviteV1(
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httpReq *http.Request,
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request *gomatrixserverlib.FederationRequest,
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roomID string,
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eventID string,
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cfg *config.FederationAPI,
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rsAPI api.FederationRoomserverAPI,
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keys gomatrixserverlib.JSONVerifier,
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) util.JSONResponse {
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roomVer := gomatrixserverlib.RoomVersionV1
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body := request.Content()
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event, err := gomatrixserverlib.NewEventFromTrustedJSON(body, false, roomVer)
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switch err.(type) {
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case gomatrixserverlib.BadJSONError:
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON(err.Error()),
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}
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case nil:
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default:
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.NotJSON("The request body could not be decoded into an invite v1 request. " + err.Error()),
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}
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}
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var strippedState []gomatrixserverlib.InviteV2StrippedState
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if err := json.Unmarshal(event.Unsigned(), &strippedState); err != nil {
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// just warn, they may not have added any.
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util.GetLogger(httpReq.Context()).Warnf("failed to extract stripped state from invite event")
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}
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return processInvite(
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httpReq.Context(), false, event, roomVer, strippedState, roomID, eventID, cfg, rsAPI, keys,
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)
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}
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func processInvite(
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ctx context.Context,
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isInviteV2 bool,
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event *gomatrixserverlib.Event,
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roomVer gomatrixserverlib.RoomVersion,
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strippedState []gomatrixserverlib.InviteV2StrippedState,
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roomID string,
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eventID string,
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cfg *config.FederationAPI,
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rsAPI api.FederationRoomserverAPI,
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keys gomatrixserverlib.JSONVerifier,
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) util.JSONResponse {
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// Check that we can accept invites for this room version.
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if _, err := roomserverVersion.SupportedRoomVersion(roomVer); err != nil {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.UnsupportedRoomVersion(
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fmt.Sprintf("Room version %q is not supported by this server.", roomVer),
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),
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}
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}
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// Check that the room ID is correct.
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if event.RoomID() != roomID {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("The room ID in the request path must match the room ID in the invite event JSON"),
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}
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}
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// Check that the event ID is correct.
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if event.EventID() != eventID {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("The event ID in the request path must match the event ID in the invite event JSON"),
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}
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}
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if event.StateKey() == nil {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("The invite event has no state key"),
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}
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}
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_, domain, err := cfg.Matrix.SplitLocalID('@', *event.StateKey())
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.InvalidArgumentValue(fmt.Sprintf("The user ID is invalid or domain %q does not belong to this server", domain)),
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}
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}
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// Check that the event is signed by the server sending the request.
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redacted, err := gomatrixserverlib.RedactEventJSON(event.JSON(), event.Version())
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("The event JSON could not be redacted"),
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}
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}
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_, serverName, err := gomatrixserverlib.SplitID('@', event.Sender())
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if err != nil {
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return util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("The event JSON contains an invalid sender"),
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}
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}
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verifyRequests := []gomatrixserverlib.VerifyJSONRequest{{
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ServerName: serverName,
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Message: redacted,
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AtTS: event.OriginServerTS(),
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StrictValidityChecking: true,
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}}
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verifyResults, err := keys.VerifyJSONs(ctx, verifyRequests)
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if err != nil {
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util.GetLogger(ctx).WithError(err).Error("keys.VerifyJSONs failed")
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return jsonerror.InternalServerError()
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}
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if verifyResults[0].Error != nil {
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return util.JSONResponse{
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Code: http.StatusForbidden,
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JSON: jsonerror.Forbidden("The invite must be signed by the server it originated on"),
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}
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}
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// Sign the event so that other servers will know that we have received the invite.
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signedEvent := event.Sign(
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string(domain), cfg.Matrix.KeyID, cfg.Matrix.PrivateKey,
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)
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// Add the invite event to the roomserver.
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inviteEvent := signedEvent.Headered(roomVer)
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request := &api.PerformInviteRequest{
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Event: inviteEvent,
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InviteRoomState: strippedState,
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RoomVersion: inviteEvent.RoomVersion,
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SendAsServer: string(api.DoNotSendToOtherServers),
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TransactionID: nil,
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}
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response := &api.PerformInviteResponse{}
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if err := rsAPI.PerformInvite(ctx, request, response); err != nil {
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util.GetLogger(ctx).WithError(err).Error("PerformInvite failed")
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return util.JSONResponse{
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Code: http.StatusInternalServerError,
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JSON: jsonerror.InternalServerError(),
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}
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}
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if response.Error != nil {
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return response.Error.JSONResponse()
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}
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// Return the signed event to the originating server, it should then tell
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// the other servers in the room that we have been invited.
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if isInviteV2 {
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: fclient.RespInviteV2{Event: signedEvent.JSON()},
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}
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} else {
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: fclient.RespInvite{Event: signedEvent.JSON()},
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}
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}
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}
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