mirror of
https://github.com/matrix-org/dendrite.git
synced 2024-11-22 14:21:55 -06:00
507 lines
16 KiB
Go
507 lines
16 KiB
Go
// 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"
|
|
"fmt"
|
|
"net/http"
|
|
"sort"
|
|
"time"
|
|
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
"github.com/matrix-org/gomatrixserverlib/fclient"
|
|
"github.com/matrix-org/gomatrixserverlib/spec"
|
|
"github.com/matrix-org/util"
|
|
"github.com/sirupsen/logrus"
|
|
|
|
"github.com/matrix-org/dendrite/internal/eventutil"
|
|
"github.com/matrix-org/dendrite/roomserver/api"
|
|
"github.com/matrix-org/dendrite/roomserver/types"
|
|
"github.com/matrix-org/dendrite/setup/config"
|
|
)
|
|
|
|
type JoinRoomQuerier struct {
|
|
roomserver api.FederationRoomserverAPI
|
|
}
|
|
|
|
func (rq *JoinRoomQuerier) CurrentStateEvent(ctx context.Context, roomID spec.RoomID, eventType string, stateKey string) (gomatrixserverlib.PDU, error) {
|
|
return rq.roomserver.CurrentStateEvent(ctx, roomID, eventType, stateKey)
|
|
}
|
|
|
|
func (rq *JoinRoomQuerier) InvitePending(ctx context.Context, roomID spec.RoomID, userID spec.UserID) (bool, error) {
|
|
return rq.roomserver.InvitePending(ctx, roomID, userID)
|
|
}
|
|
|
|
func (rq *JoinRoomQuerier) RestrictedRoomJoinInfo(ctx context.Context, roomID spec.RoomID, userID spec.UserID, localServerName spec.ServerName) (*gomatrixserverlib.RestrictedRoomJoinInfo, error) {
|
|
roomInfo, err := rq.roomserver.QueryRoomInfo(ctx, roomID)
|
|
if err != nil || roomInfo == nil || roomInfo.IsStub() {
|
|
return nil, err
|
|
}
|
|
|
|
req := api.QueryServerJoinedToRoomRequest{
|
|
ServerName: localServerName,
|
|
RoomID: roomID.String(),
|
|
}
|
|
res := api.QueryServerJoinedToRoomResponse{}
|
|
if err = rq.roomserver.QueryServerJoinedToRoom(ctx, &req, &res); err != nil {
|
|
util.GetLogger(ctx).WithError(err).Error("rsAPI.QueryServerJoinedToRoom failed")
|
|
return nil, fmt.Errorf("InternalServerError: Failed to query room: %w", err)
|
|
}
|
|
|
|
userJoinedToRoom, err := rq.roomserver.UserJoinedToRoom(ctx, types.RoomNID(roomInfo.RoomNID), userID)
|
|
if err != nil {
|
|
util.GetLogger(ctx).WithError(err).Error("rsAPI.UserJoinedToRoom failed")
|
|
return nil, fmt.Errorf("InternalServerError: %w", err)
|
|
}
|
|
|
|
locallyJoinedUsers, err := rq.roomserver.LocallyJoinedUsers(ctx, roomInfo.RoomVersion, types.RoomNID(roomInfo.RoomNID))
|
|
if err != nil {
|
|
util.GetLogger(ctx).WithError(err).Error("rsAPI.GetLocallyJoinedUsers failed")
|
|
return nil, fmt.Errorf("InternalServerError: %w", err)
|
|
}
|
|
|
|
return &gomatrixserverlib.RestrictedRoomJoinInfo{
|
|
LocalServerInRoom: res.RoomExists && res.IsInRoom,
|
|
UserJoinedToRoom: userJoinedToRoom,
|
|
JoinedUsers: locallyJoinedUsers,
|
|
}, nil
|
|
}
|
|
|
|
// MakeJoin implements the /make_join API
|
|
func MakeJoin(
|
|
httpReq *http.Request,
|
|
request *fclient.FederationRequest,
|
|
cfg *config.FederationAPI,
|
|
rsAPI api.FederationRoomserverAPI,
|
|
roomID spec.RoomID, userID spec.UserID,
|
|
remoteVersions []gomatrixserverlib.RoomVersion,
|
|
) util.JSONResponse {
|
|
roomVersion, err := rsAPI.QueryRoomVersionForRoom(httpReq.Context(), roomID.String())
|
|
if err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("failed obtaining room version")
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
|
|
req := api.QueryServerJoinedToRoomRequest{
|
|
ServerName: cfg.Matrix.ServerName,
|
|
RoomID: roomID.String(),
|
|
}
|
|
res := api.QueryServerJoinedToRoomResponse{}
|
|
if err := rsAPI.QueryServerJoinedToRoom(httpReq.Context(), &req, &res); err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("rsAPI.QueryServerJoinedToRoom failed")
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
|
|
createJoinTemplate := func(proto *gomatrixserverlib.ProtoEvent) (gomatrixserverlib.PDU, []gomatrixserverlib.PDU, error) {
|
|
identity, err := cfg.Matrix.SigningIdentityFor(request.Destination())
|
|
if err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Errorf("obtaining signing identity for %s failed", request.Destination())
|
|
return nil, nil, spec.NotFound(fmt.Sprintf("Server name %q does not exist", request.Destination()))
|
|
}
|
|
|
|
queryRes := api.QueryLatestEventsAndStateResponse{
|
|
RoomVersion: roomVersion,
|
|
}
|
|
event, err := eventutil.QueryAndBuildEvent(httpReq.Context(), proto, cfg.Matrix, identity, time.Now(), rsAPI, &queryRes)
|
|
switch e := err.(type) {
|
|
case nil:
|
|
case eventutil.ErrRoomNoExists:
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("eventutil.BuildEvent failed")
|
|
return nil, nil, spec.NotFound("Room does not exist")
|
|
case gomatrixserverlib.BadJSONError:
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("eventutil.BuildEvent failed")
|
|
return nil, nil, spec.BadJSON(e.Error())
|
|
default:
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("eventutil.BuildEvent failed")
|
|
return nil, nil, spec.InternalServerError{}
|
|
}
|
|
|
|
stateEvents := make([]gomatrixserverlib.PDU, len(queryRes.StateEvents))
|
|
for i, stateEvent := range queryRes.StateEvents {
|
|
stateEvents[i] = stateEvent.PDU
|
|
}
|
|
return event, stateEvents, nil
|
|
}
|
|
|
|
roomQuerier := JoinRoomQuerier{
|
|
roomserver: rsAPI,
|
|
}
|
|
|
|
input := gomatrixserverlib.HandleMakeJoinInput{
|
|
Context: httpReq.Context(),
|
|
UserID: userID,
|
|
RoomID: roomID,
|
|
RoomVersion: roomVersion,
|
|
RemoteVersions: remoteVersions,
|
|
RequestOrigin: request.Origin(),
|
|
LocalServerName: cfg.Matrix.ServerName,
|
|
LocalServerInRoom: res.RoomExists && res.IsInRoom,
|
|
RoomQuerier: &roomQuerier,
|
|
BuildEventTemplate: createJoinTemplate,
|
|
}
|
|
response, internalErr := gomatrixserverlib.HandleMakeJoin(input)
|
|
if internalErr != nil {
|
|
switch e := internalErr.(type) {
|
|
case nil:
|
|
case spec.InternalServerError:
|
|
util.GetLogger(httpReq.Context()).WithError(internalErr)
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
case spec.MatrixError:
|
|
util.GetLogger(httpReq.Context()).WithError(internalErr)
|
|
code := http.StatusInternalServerError
|
|
switch e.ErrCode {
|
|
case spec.ErrorForbidden:
|
|
code = http.StatusForbidden
|
|
case spec.ErrorNotFound:
|
|
code = http.StatusNotFound
|
|
case spec.ErrorUnableToAuthoriseJoin:
|
|
code = http.StatusBadRequest
|
|
case spec.ErrorBadJSON:
|
|
code = http.StatusBadRequest
|
|
}
|
|
|
|
return util.JSONResponse{
|
|
Code: code,
|
|
JSON: e,
|
|
}
|
|
case spec.IncompatibleRoomVersionError:
|
|
util.GetLogger(httpReq.Context()).WithError(internalErr)
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: e,
|
|
}
|
|
default:
|
|
util.GetLogger(httpReq.Context()).WithError(internalErr)
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.Unknown("unknown error"),
|
|
}
|
|
}
|
|
}
|
|
|
|
if response == nil {
|
|
util.GetLogger(httpReq.Context()).Error("gmsl.HandleMakeJoin returned invalid response")
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: map[string]interface{}{
|
|
"event": response.JoinTemplateEvent,
|
|
"room_version": response.RoomVersion,
|
|
},
|
|
}
|
|
}
|
|
|
|
// SendJoin implements the /send_join API
|
|
// The make-join send-join dance makes much more sense as a single
|
|
// flow so the cyclomatic complexity is high:
|
|
// nolint:gocyclo
|
|
func SendJoin(
|
|
httpReq *http.Request,
|
|
request *fclient.FederationRequest,
|
|
cfg *config.FederationAPI,
|
|
rsAPI api.FederationRoomserverAPI,
|
|
keys gomatrixserverlib.JSONVerifier,
|
|
roomID, eventID string,
|
|
) util.JSONResponse {
|
|
roomVersion, err := rsAPI.QueryRoomVersionForRoom(httpReq.Context(), roomID)
|
|
if err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("rsAPI.QueryRoomVersionForRoom failed")
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
verImpl, err := gomatrixserverlib.GetRoomVersion(roomVersion)
|
|
if err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.UnsupportedRoomVersion(
|
|
fmt.Sprintf("QueryRoomVersionForRoom returned unknown room version: %s", roomVersion),
|
|
),
|
|
}
|
|
}
|
|
|
|
event, err := verImpl.NewEventFromUntrustedJSON(request.Content())
|
|
if err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON("The request body could not be decoded into valid JSON: " + err.Error()),
|
|
}
|
|
}
|
|
|
|
// Check that a state key is provided.
|
|
if event.StateKey() == nil || event.StateKeyEquals("") {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON("No state key was provided in the join event."),
|
|
}
|
|
}
|
|
if !event.StateKeyEquals(event.Sender()) {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON("Event state key must match the event sender."),
|
|
}
|
|
}
|
|
|
|
// Check that the sender belongs to the server that is sending us
|
|
// the request. By this point we've already asserted that the sender
|
|
// and the state key are equal so we don't need to check both.
|
|
var serverName spec.ServerName
|
|
if _, serverName, err = gomatrixserverlib.SplitID('@', event.Sender()); err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: spec.Forbidden("The sender of the join is invalid"),
|
|
}
|
|
} else if serverName != request.Origin() {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: spec.Forbidden("The sender does not match the server that originated the request"),
|
|
}
|
|
}
|
|
|
|
// Check that the room ID is correct.
|
|
if event.RoomID() != roomID {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON(
|
|
fmt.Sprintf(
|
|
"The room ID in the request path (%q) must match the room ID in the join event JSON (%q)",
|
|
roomID, event.RoomID(),
|
|
),
|
|
),
|
|
}
|
|
}
|
|
|
|
// Check that the event ID is correct.
|
|
if event.EventID() != eventID {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON(
|
|
fmt.Sprintf(
|
|
"The event ID in the request path (%q) must match the event ID in the join event JSON (%q)",
|
|
eventID, event.EventID(),
|
|
),
|
|
),
|
|
}
|
|
}
|
|
|
|
// Check that this is in fact a join event
|
|
membership, err := event.Membership()
|
|
if err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON("missing content.membership key"),
|
|
}
|
|
}
|
|
if membership != spec.Join {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON("membership must be 'join'"),
|
|
}
|
|
}
|
|
|
|
// Check that the event is signed by the server sending the request.
|
|
redacted, err := verImpl.RedactEventJSON(event.JSON())
|
|
if err != nil {
|
|
logrus.WithError(err).Errorf("XXX: join.go")
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON("The event JSON could not be redacted"),
|
|
}
|
|
}
|
|
verifyRequests := []gomatrixserverlib.VerifyJSONRequest{{
|
|
ServerName: serverName,
|
|
Message: redacted,
|
|
AtTS: event.OriginServerTS(),
|
|
StrictValidityChecking: true,
|
|
}}
|
|
verifyResults, err := keys.VerifyJSONs(httpReq.Context(), verifyRequests)
|
|
if err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("keys.VerifyJSONs failed")
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
if verifyResults[0].Error != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: spec.Forbidden("Signature check failed: " + verifyResults[0].Error.Error()),
|
|
}
|
|
}
|
|
|
|
// Fetch the state and auth chain. We do this before we send the events
|
|
// on, in case this fails.
|
|
var stateAndAuthChainResponse api.QueryStateAndAuthChainResponse
|
|
err = rsAPI.QueryStateAndAuthChain(httpReq.Context(), &api.QueryStateAndAuthChainRequest{
|
|
PrevEventIDs: event.PrevEventIDs(),
|
|
AuthEventIDs: event.AuthEventIDs(),
|
|
RoomID: roomID,
|
|
ResolveState: true,
|
|
}, &stateAndAuthChainResponse)
|
|
if err != nil {
|
|
util.GetLogger(httpReq.Context()).WithError(err).Error("rsAPI.QueryStateAndAuthChain failed")
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
|
|
if !stateAndAuthChainResponse.RoomExists {
|
|
return util.JSONResponse{
|
|
Code: http.StatusNotFound,
|
|
JSON: spec.NotFound("Room does not exist"),
|
|
}
|
|
}
|
|
if !stateAndAuthChainResponse.StateKnown {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: spec.Forbidden("State not known"),
|
|
}
|
|
}
|
|
|
|
// Check if the user is already in the room. If they're already in then
|
|
// there isn't much point in sending another join event into the room.
|
|
// Also check to see if they are banned: if they are then we reject them.
|
|
alreadyJoined := false
|
|
isBanned := false
|
|
for _, se := range stateAndAuthChainResponse.StateEvents {
|
|
if !se.StateKeyEquals(*event.StateKey()) {
|
|
continue
|
|
}
|
|
if membership, merr := se.Membership(); merr == nil {
|
|
alreadyJoined = (membership == spec.Join)
|
|
isBanned = (membership == spec.Ban)
|
|
break
|
|
}
|
|
}
|
|
|
|
if isBanned {
|
|
return util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: spec.Forbidden("user is banned"),
|
|
}
|
|
}
|
|
|
|
// If the membership content contains a user ID for a server that is not
|
|
// ours then we should kick it back.
|
|
var memberContent gomatrixserverlib.MemberContent
|
|
if err := json.Unmarshal(event.Content(), &memberContent); err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON(err.Error()),
|
|
}
|
|
}
|
|
if memberContent.AuthorisedVia != "" {
|
|
_, domain, err := gomatrixserverlib.SplitID('@', memberContent.AuthorisedVia)
|
|
if err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON(fmt.Sprintf("The authorising username %q is invalid.", memberContent.AuthorisedVia)),
|
|
}
|
|
}
|
|
if domain != cfg.Matrix.ServerName {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.BadJSON(fmt.Sprintf("The authorising username %q does not belong to this server.", memberContent.AuthorisedVia)),
|
|
}
|
|
}
|
|
}
|
|
|
|
// Sign the membership event. This is required for restricted joins to work
|
|
// in the case that the authorised via user is one of our own users. It also
|
|
// doesn't hurt to do it even if it isn't a restricted join.
|
|
signed := event.Sign(
|
|
string(cfg.Matrix.ServerName),
|
|
cfg.Matrix.KeyID,
|
|
cfg.Matrix.PrivateKey,
|
|
)
|
|
|
|
// 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
|
|
if !alreadyJoined {
|
|
var response api.InputRoomEventsResponse
|
|
rsAPI.InputRoomEvents(httpReq.Context(), &api.InputRoomEventsRequest{
|
|
InputRoomEvents: []api.InputRoomEvent{
|
|
{
|
|
Kind: api.KindNew,
|
|
Event: &types.HeaderedEvent{PDU: signed},
|
|
SendAsServer: string(cfg.Matrix.ServerName),
|
|
TransactionID: nil,
|
|
},
|
|
},
|
|
}, &response)
|
|
if response.ErrMsg != "" {
|
|
util.GetLogger(httpReq.Context()).WithField(logrus.ErrorKey, response.ErrMsg).Error("SendEvents failed")
|
|
if response.NotAllowed {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: spec.Forbidden(response.ErrMsg),
|
|
}
|
|
}
|
|
return util.JSONResponse{
|
|
Code: http.StatusInternalServerError,
|
|
JSON: spec.InternalServerError{},
|
|
}
|
|
}
|
|
}
|
|
|
|
// sort events deterministically by depth (lower is earlier)
|
|
// We also do this because sytest's basic federation server isn't good at using the correct
|
|
// state if these lists are randomised, resulting in flakey tests. :(
|
|
sort.Sort(eventsByDepth(stateAndAuthChainResponse.StateEvents))
|
|
sort.Sort(eventsByDepth(stateAndAuthChainResponse.AuthChainEvents))
|
|
|
|
// https://matrix.org/docs/spec/server_server/latest#put-matrix-federation-v1-send-join-roomid-eventid
|
|
return util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: fclient.RespSendJoin{
|
|
StateEvents: types.NewEventJSONsFromHeaderedEvents(stateAndAuthChainResponse.StateEvents),
|
|
AuthEvents: types.NewEventJSONsFromHeaderedEvents(stateAndAuthChainResponse.AuthChainEvents),
|
|
Origin: cfg.Matrix.ServerName,
|
|
Event: signed.JSON(),
|
|
},
|
|
}
|
|
}
|
|
|
|
type eventsByDepth []*types.HeaderedEvent
|
|
|
|
func (e eventsByDepth) Len() int {
|
|
return len(e)
|
|
}
|
|
func (e eventsByDepth) Swap(i, j int) {
|
|
e[i], e[j] = e[j], e[i]
|
|
}
|
|
func (e eventsByDepth) Less(i, j int) bool {
|
|
return e[i].Depth() < e[j].Depth()
|
|
}
|