mirror of
https://github.com/matrix-org/dendrite
synced 2024-12-15 20:23:41 +01:00
e8dd37d533
* Add response size and requests total to internal handler * Move MustRegister calls to New* funcs * Move MustRegister back to init * Init at some place, minimize changes
291 lines
9.3 KiB
Go
291 lines
9.3 KiB
Go
// Copyright 2017 Vector Creations 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"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
"github.com/matrix-org/util"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/sirupsen/logrus"
|
|
|
|
"github.com/matrix-org/dendrite/clientapi/httputil"
|
|
"github.com/matrix-org/dendrite/clientapi/jsonerror"
|
|
"github.com/matrix-org/dendrite/internal/eventutil"
|
|
"github.com/matrix-org/dendrite/internal/transactions"
|
|
"github.com/matrix-org/dendrite/roomserver/api"
|
|
"github.com/matrix-org/dendrite/setup/config"
|
|
userapi "github.com/matrix-org/dendrite/userapi/api"
|
|
)
|
|
|
|
// http://matrix.org/docs/spec/client_server/r0.2.0.html#put-matrix-client-r0-rooms-roomid-send-eventtype-txnid
|
|
// http://matrix.org/docs/spec/client_server/r0.2.0.html#put-matrix-client-r0-rooms-roomid-state-eventtype-statekey
|
|
type sendEventResponse struct {
|
|
EventID string `json:"event_id"`
|
|
}
|
|
|
|
var (
|
|
userRoomSendMutexes sync.Map // (roomID+userID) -> mutex. mutexes to ensure correct ordering of sendEvents
|
|
)
|
|
|
|
var sendEventDuration = prometheus.NewHistogramVec(
|
|
prometheus.HistogramOpts{
|
|
Namespace: "dendrite",
|
|
Subsystem: "clientapi",
|
|
Name: "sendevent_duration_millis",
|
|
Help: "How long it takes to build and submit a new event from the client API to the roomserver",
|
|
Buckets: []float64{ // milliseconds
|
|
5, 10, 25, 50, 75, 100, 250, 500,
|
|
1000, 2000, 3000, 4000, 5000, 6000,
|
|
7000, 8000, 9000, 10000, 15000, 20000,
|
|
},
|
|
},
|
|
[]string{"action"},
|
|
)
|
|
|
|
// SendEvent implements:
|
|
// /rooms/{roomID}/send/{eventType}
|
|
// /rooms/{roomID}/send/{eventType}/{txnID}
|
|
// /rooms/{roomID}/state/{eventType}/{stateKey}
|
|
func SendEvent(
|
|
req *http.Request,
|
|
device *userapi.Device,
|
|
roomID, eventType string, txnID, stateKey *string,
|
|
cfg *config.ClientAPI,
|
|
rsAPI api.RoomserverInternalAPI,
|
|
txnCache *transactions.Cache,
|
|
) util.JSONResponse {
|
|
verReq := api.QueryRoomVersionForRoomRequest{RoomID: roomID}
|
|
verRes := api.QueryRoomVersionForRoomResponse{}
|
|
if err := rsAPI.QueryRoomVersionForRoom(req.Context(), &verReq, &verRes); err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.UnsupportedRoomVersion(err.Error()),
|
|
}
|
|
}
|
|
|
|
if txnID != nil {
|
|
// Try to fetch response from transactionsCache
|
|
if res, ok := txnCache.FetchTransaction(device.AccessToken, *txnID); ok {
|
|
return *res
|
|
}
|
|
}
|
|
|
|
// create a mutex for the specific user in the specific room
|
|
// this avoids a situation where events that are received in quick succession are sent to the roomserver in a jumbled order
|
|
userID := device.UserID
|
|
mutex, _ := userRoomSendMutexes.LoadOrStore(roomID+userID, &sync.Mutex{})
|
|
mutex.(*sync.Mutex).Lock()
|
|
defer mutex.(*sync.Mutex).Unlock()
|
|
|
|
startedGeneratingEvent := time.Now()
|
|
|
|
var r map[string]interface{} // must be a JSON object
|
|
resErr := httputil.UnmarshalJSONRequest(req, &r)
|
|
if resErr != nil {
|
|
return *resErr
|
|
}
|
|
|
|
evTime, err := httputil.ParseTSParam(req)
|
|
if err != nil {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.InvalidArgumentValue(err.Error()),
|
|
}
|
|
}
|
|
|
|
e, resErr := generateSendEvent(req.Context(), r, device, roomID, eventType, stateKey, cfg, rsAPI, evTime)
|
|
if resErr != nil {
|
|
return *resErr
|
|
}
|
|
timeToGenerateEvent := time.Since(startedGeneratingEvent)
|
|
|
|
// validate that the aliases exists
|
|
if eventType == gomatrixserverlib.MRoomCanonicalAlias && stateKey != nil && *stateKey == "" {
|
|
aliasReq := api.AliasEvent{}
|
|
if err = json.Unmarshal(e.Content(), &aliasReq); err != nil {
|
|
return util.ErrorResponse(fmt.Errorf("unable to parse alias event: %w", err))
|
|
}
|
|
if !aliasReq.Valid() {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.InvalidParam("Request contains invalid aliases."),
|
|
}
|
|
}
|
|
aliasRes := &api.GetAliasesForRoomIDResponse{}
|
|
if err = rsAPI.GetAliasesForRoomID(req.Context(), &api.GetAliasesForRoomIDRequest{RoomID: roomID}, aliasRes); err != nil {
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
var found int
|
|
requestAliases := append(aliasReq.AltAliases, aliasReq.Alias)
|
|
for _, alias := range aliasRes.Aliases {
|
|
for _, altAlias := range requestAliases {
|
|
if altAlias == alias {
|
|
found++
|
|
}
|
|
}
|
|
}
|
|
// check that we found at least the same amount of existing aliases as are in the request
|
|
if aliasReq.Alias != "" && found < len(requestAliases) {
|
|
return util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadAlias("No matching alias found."),
|
|
}
|
|
}
|
|
}
|
|
|
|
var txnAndSessionID *api.TransactionID
|
|
if txnID != nil {
|
|
txnAndSessionID = &api.TransactionID{
|
|
TransactionID: *txnID,
|
|
SessionID: device.SessionID,
|
|
}
|
|
}
|
|
|
|
// pass the new event to the roomserver and receive the correct event ID
|
|
// event ID in case of duplicate transaction is discarded
|
|
startedSubmittingEvent := time.Now()
|
|
if err := api.SendEvents(
|
|
req.Context(), rsAPI,
|
|
api.KindNew,
|
|
[]*gomatrixserverlib.HeaderedEvent{
|
|
e.Headered(verRes.RoomVersion),
|
|
},
|
|
cfg.Matrix.ServerName,
|
|
cfg.Matrix.ServerName,
|
|
txnAndSessionID,
|
|
false,
|
|
); err != nil {
|
|
util.GetLogger(req.Context()).WithError(err).Error("SendEvents failed")
|
|
return jsonerror.InternalServerError()
|
|
}
|
|
timeToSubmitEvent := time.Since(startedSubmittingEvent)
|
|
util.GetLogger(req.Context()).WithFields(logrus.Fields{
|
|
"event_id": e.EventID(),
|
|
"room_id": roomID,
|
|
"room_version": verRes.RoomVersion,
|
|
}).Info("Sent event to roomserver")
|
|
|
|
res := util.JSONResponse{
|
|
Code: http.StatusOK,
|
|
JSON: sendEventResponse{e.EventID()},
|
|
}
|
|
// Add response to transactionsCache
|
|
if txnID != nil {
|
|
txnCache.AddTransaction(device.AccessToken, *txnID, &res)
|
|
}
|
|
|
|
// Take a note of how long it took to generate the event vs submit
|
|
// it to the roomserver.
|
|
sendEventDuration.With(prometheus.Labels{"action": "build"}).Observe(float64(timeToGenerateEvent.Milliseconds()))
|
|
sendEventDuration.With(prometheus.Labels{"action": "submit"}).Observe(float64(timeToSubmitEvent.Milliseconds()))
|
|
|
|
return res
|
|
}
|
|
|
|
func generateSendEvent(
|
|
ctx context.Context,
|
|
r map[string]interface{},
|
|
device *userapi.Device,
|
|
roomID, eventType string, stateKey *string,
|
|
cfg *config.ClientAPI,
|
|
rsAPI api.RoomserverInternalAPI,
|
|
evTime time.Time,
|
|
) (*gomatrixserverlib.Event, *util.JSONResponse) {
|
|
// parse the incoming http request
|
|
userID := device.UserID
|
|
|
|
// create the new event and set all the fields we can
|
|
builder := gomatrixserverlib.EventBuilder{
|
|
Sender: userID,
|
|
RoomID: roomID,
|
|
Type: eventType,
|
|
StateKey: stateKey,
|
|
}
|
|
err := builder.SetContent(r)
|
|
if err != nil {
|
|
util.GetLogger(ctx).WithError(err).Error("builder.SetContent failed")
|
|
resErr := jsonerror.InternalServerError()
|
|
return nil, &resErr
|
|
}
|
|
|
|
var queryRes api.QueryLatestEventsAndStateResponse
|
|
e, err := eventutil.QueryAndBuildEvent(ctx, &builder, cfg.Matrix, evTime, rsAPI, &queryRes)
|
|
if err == eventutil.ErrRoomNoExists {
|
|
return nil, &util.JSONResponse{
|
|
Code: http.StatusNotFound,
|
|
JSON: jsonerror.NotFound("Room does not exist"),
|
|
}
|
|
} else if e, ok := err.(gomatrixserverlib.BadJSONError); ok {
|
|
return nil, &util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON(e.Error()),
|
|
}
|
|
} else if e, ok := err.(gomatrixserverlib.EventValidationError); ok {
|
|
if e.Code == gomatrixserverlib.EventValidationTooLarge {
|
|
return nil, &util.JSONResponse{
|
|
Code: http.StatusRequestEntityTooLarge,
|
|
JSON: jsonerror.BadJSON(e.Error()),
|
|
}
|
|
}
|
|
return nil, &util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON(e.Error()),
|
|
}
|
|
} else if err != nil {
|
|
util.GetLogger(ctx).WithError(err).Error("eventutil.BuildEvent failed")
|
|
resErr := jsonerror.InternalServerError()
|
|
return nil, &resErr
|
|
}
|
|
|
|
// check to see if this user can perform this operation
|
|
stateEvents := make([]*gomatrixserverlib.Event, len(queryRes.StateEvents))
|
|
for i := range queryRes.StateEvents {
|
|
stateEvents[i] = queryRes.StateEvents[i].Event
|
|
}
|
|
provider := gomatrixserverlib.NewAuthEvents(stateEvents)
|
|
if err = gomatrixserverlib.Allowed(e.Event, &provider); err != nil {
|
|
return nil, &util.JSONResponse{
|
|
Code: http.StatusForbidden,
|
|
JSON: jsonerror.Forbidden(err.Error()), // TODO: Is this error string comprehensible to the client?
|
|
}
|
|
}
|
|
|
|
// User should not be able to send a tombstone event to the same room.
|
|
if e.Type() == "m.room.tombstone" {
|
|
content := make(map[string]interface{})
|
|
if err = json.Unmarshal(e.Content(), &content); err != nil {
|
|
util.GetLogger(ctx).WithError(err).Error("Cannot unmarshal the event content.")
|
|
return nil, &util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.BadJSON("Cannot unmarshal the event content."),
|
|
}
|
|
}
|
|
if content["replacement_room"] == e.RoomID() {
|
|
return nil, &util.JSONResponse{
|
|
Code: http.StatusBadRequest,
|
|
JSON: jsonerror.InvalidParam("Cannot send tombstone event that points to the same room."),
|
|
}
|
|
}
|
|
}
|
|
|
|
return e.Event, nil
|
|
}
|