Implement /make_join and /send_join (#316)

This commit is contained in:
Erik Johnston 2017-11-29 09:38:56 +00:00 committed by GitHub
parent 3c543bba54
commit b7a3b92a9f
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3 changed files with 235 additions and 13 deletions

View File

@ -42,11 +42,32 @@ func BuildEvent(
builder *gomatrixserverlib.EventBuilder, cfg config.Dendrite,
queryAPI api.RoomserverQueryAPI, queryRes *api.QueryLatestEventsAndStateResponse,
) (*gomatrixserverlib.Event, error) {
eventsNeeded, err := gomatrixserverlib.StateNeededForEventBuilder(builder)
err := AddPrevEventsToEvent(ctx, builder, queryAPI, queryRes)
if err != nil {
return nil, err
}
eventID := fmt.Sprintf("$%s:%s", util.RandomString(16), cfg.Matrix.ServerName)
now := time.Now()
event, err := builder.Build(eventID, now, cfg.Matrix.ServerName, cfg.Matrix.KeyID, cfg.Matrix.PrivateKey)
if err != nil {
return nil, err
}
return &event, nil
}
// AddPrevEventsToEvent fills out the prev_events and auth_events fields in EventBuilder
func AddPrevEventsToEvent(
ctx context.Context,
builder *gomatrixserverlib.EventBuilder,
queryAPI api.RoomserverQueryAPI, queryRes *api.QueryLatestEventsAndStateResponse,
) error {
eventsNeeded, err := gomatrixserverlib.StateNeededForEventBuilder(builder)
if err != nil {
return err
}
// Ask the roomserver for information about this room
queryReq := api.QueryLatestEventsAndStateRequest{
RoomID: builder.RoomID,
@ -56,11 +77,11 @@ func BuildEvent(
queryRes = &api.QueryLatestEventsAndStateResponse{}
}
if err = queryAPI.QueryLatestEventsAndState(ctx, &queryReq, queryRes); err != nil {
return nil, err
return err
}
if !queryRes.RoomExists {
return nil, ErrRoomNoExists
return ErrRoomNoExists
}
builder.Depth = queryRes.Depth
@ -71,22 +92,15 @@ func BuildEvent(
for i := range queryRes.StateEvents {
err = authEvents.AddEvent(&queryRes.StateEvents[i])
if err != nil {
return nil, err
return err
}
}
refs, err := eventsNeeded.AuthEventReferences(&authEvents)
if err != nil {
return nil, err
return err
}
builder.AuthEvents = refs
eventID := fmt.Sprintf("$%s:%s", util.RandomString(16), cfg.Matrix.ServerName)
now := time.Now()
event, err := builder.Build(eventID, now, cfg.Matrix.ServerName, cfg.Matrix.KeyID, cfg.Matrix.PrivateKey)
if err != nil {
return nil, err
}
return &event, nil
return nil
}

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@ -0,0 +1,184 @@
// Copyright 2017 New Vector Ltd
//
// 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"
"encoding/json"
"net/http"
"github.com/matrix-org/dendrite/clientapi/httputil"
"github.com/matrix-org/dendrite/clientapi/jsonerror"
"github.com/matrix-org/dendrite/clientapi/producers"
"github.com/matrix-org/dendrite/common"
"github.com/matrix-org/dendrite/common/config"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
)
// MakeJoin implements the /make_join API
func MakeJoin(
ctx context.Context,
httpReq *http.Request,
request *gomatrixserverlib.FederationRequest,
cfg config.Dendrite,
query api.RoomserverQueryAPI,
roomID, userID string,
) util.JSONResponse {
_, domain, err := gomatrixserverlib.SplitID('@', userID)
if err != nil {
return util.JSONResponse{
Code: 400,
JSON: jsonerror.BadJSON("Invalid UserID"),
}
}
if domain != request.Origin() {
return util.JSONResponse{
Code: 403,
JSON: jsonerror.Forbidden("The join must be sent by the server of the user"),
}
}
// Try building an event for the server
builder := gomatrixserverlib.EventBuilder{
Sender: userID,
RoomID: roomID,
Type: "m.room.member",
StateKey: &userID,
}
err = builder.SetContent(map[string]interface{}{"membership": "join"})
if err != nil {
return httputil.LogThenError(httpReq, err)
}
var queryRes api.QueryLatestEventsAndStateResponse
event, err := common.BuildEvent(ctx, &builder, cfg, query, &queryRes)
if err == common.ErrRoomNoExists {
return util.JSONResponse{
Code: 404,
JSON: jsonerror.NotFound("Room does not exist"),
}
} else if err != nil {
return httputil.LogThenError(httpReq, err)
}
// Check that the join is allowed or not
stateEvents := make([]*gomatrixserverlib.Event, len(queryRes.StateEvents))
for i := range queryRes.StateEvents {
stateEvents[i] = &queryRes.StateEvents[i]
}
provider := gomatrixserverlib.NewAuthEvents(stateEvents)
if err = gomatrixserverlib.Allowed(*event, &provider); err != nil {
return util.JSONResponse{
Code: 403,
JSON: jsonerror.Forbidden(err.Error()),
}
}
return util.JSONResponse{
Code: 200,
JSON: map[string]interface{}{"event": builder},
}
}
// SendJoin implements the /send_join API
func SendJoin(
ctx context.Context,
httpReq *http.Request,
request *gomatrixserverlib.FederationRequest,
cfg config.Dendrite,
query api.RoomserverQueryAPI,
producer *producers.RoomserverProducer,
keys gomatrixserverlib.KeyRing,
roomID, eventID string,
) util.JSONResponse {
var event gomatrixserverlib.Event
if err := json.Unmarshal(request.Content(), &event); err != nil {
return util.JSONResponse{
Code: 400,
JSON: jsonerror.NotJSON("The request body could not be decoded into valid JSON. " + err.Error()),
}
}
// Check that the room ID is correct.
if event.RoomID() != roomID {
return util.JSONResponse{
Code: 400,
JSON: jsonerror.BadJSON("The room ID in the request path must match the room ID in the join event JSON"),
}
}
// Check that the event ID is correct.
if event.EventID() != eventID {
return util.JSONResponse{
Code: 400,
JSON: jsonerror.BadJSON("The event ID in the request path must match the event ID in the join event JSON"),
}
}
// Check that the event is from the server sending the request.
if event.Origin() != request.Origin() {
return util.JSONResponse{
Code: 403,
JSON: jsonerror.Forbidden("The join must be sent by the server it originated on"),
}
}
// Check that the event is signed by the server sending the request.
verifyRequests := []gomatrixserverlib.VerifyJSONRequest{{
ServerName: event.Origin(),
Message: event.Redact().JSON(),
AtTS: event.OriginServerTS(),
}}
verifyResults, err := keys.VerifyJSONs(ctx, verifyRequests)
if err != nil {
return httputil.LogThenError(httpReq, err)
}
if verifyResults[0].Error != nil {
return util.JSONResponse{
Code: 403,
JSON: jsonerror.Forbidden("The join must be signed by the server it originated on"),
}
}
// Fetch the state and auth chain. We do this before we send the events
// on, in case this fails.
var stateAndAuthChainRepsonse api.QueryStateAndAuthChainResponse
err = query.QueryStateAndAuthChain(ctx, &api.QueryStateAndAuthChainRequest{
PrevEventIDs: event.PrevEventIDs(),
AuthEventIDs: event.AuthEventIDs(),
RoomID: roomID,
}, &stateAndAuthChainRepsonse)
if err != nil {
return httputil.LogThenError(httpReq, err)
}
// Send the events to the room server.
// We are responsible for notifying other servers that the user has joined
// the room, so set SendAsServer to cfg.Matrix.ServerName
err = producer.SendEvents(ctx, []gomatrixserverlib.Event{event}, cfg.Matrix.ServerName)
if err != nil {
return httputil.LogThenError(httpReq, err)
}
return util.JSONResponse{
Code: 200,
JSON: map[string]interface{}{
"state": stateAndAuthChainRepsonse.StateEvents,
"auth_chain": stateAndAuthChainRepsonse.AuthChainEvents,
},
}
}

View File

@ -124,6 +124,30 @@ func Setup(
},
)).Methods("GET")
v1fedmux.Handle("/make_join/{roomID}/{userID}", common.MakeFedAPI(
"federation_make_join", cfg.Matrix.ServerName, keys,
func(httpReq *http.Request, request *gomatrixserverlib.FederationRequest) util.JSONResponse {
vars := mux.Vars(httpReq)
roomID := vars["roomID"]
userID := vars["userID"]
return MakeJoin(
httpReq.Context(), httpReq, request, cfg, query, roomID, userID,
)
},
)).Methods("GET")
v1fedmux.Handle("/send_join/{roomID}/{userID}", common.MakeFedAPI(
"federation_send_join", cfg.Matrix.ServerName, keys,
func(httpReq *http.Request, request *gomatrixserverlib.FederationRequest) util.JSONResponse {
vars := mux.Vars(httpReq)
roomID := vars["roomID"]
userID := vars["userID"]
return SendJoin(
httpReq.Context(), httpReq, request, cfg, query, producer, keys, roomID, userID,
)
},
)).Methods("PUT")
v1fedmux.Handle("/version", common.MakeExternalAPI(
"federation_version",
func(httpReq *http.Request) util.JSONResponse {