dendrite/clientapi/routing/sendevent.go

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// 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"
"reflect"
"sync"
"time"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/gomatrixserverlib/spec"
"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/roomserver/types"
"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
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// 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"},
)
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// 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.ClientRoomserverAPI,
txnCache *transactions.Cache,
) util.JSONResponse {
roomVersion, err := rsAPI.QueryRoomVersionForRoom(req.Context(), roomID)
if err != nil {
Further room version wiring (#936) * Room version 2 by default, other wiring updates, update gomatrixserverlib * Fix nil pointer exception * Fix some more nil pointer exceptions hopefully * Update gomatrixserverlib * Send all room versions when joining, not just stable ones * Remove room version cquery * Get room version when getting events from the roomserver database * Reset default back to room version 2 * Don't generate event IDs unless needed * Revert "Remove room version cquery" This reverts commit a170d5873360dd059614460acc8b21ab2cda9767. * Query room version in federation API, client API as needed * Improvements to make_join send_join dance * Make room server producers use headered events * Lint tweaks * Update gomatrixserverlib * Versioned SendJoin * Query room version in syncapi backfill * Handle transaction marshalling/unmarshalling within Dendrite * Sorta fix federation (kinda) * whoops commit federation API too * Use NewEventFromTrustedJSON when getting events from the database * Update gomatrixserverlib * Strip headers on federationapi endpoints * Fix bug in clientapi profile room version query * Update gomatrixserverlib * Return more useful error if room version query doesn't find the room * Update gomatrixserverlib * Update gomatrixserverlib * Maybe fix federation * Fix formatting directive * Update sytest whitelist and blacklist * Temporarily disable room versions 3 and 4 until gmsl is fixed * Fix count of EDUs in logging * Update gomatrixserverlib * Update gomatrixserverlib * Update gomatrixserverlib * Rely on EventBuilder in gmsl to generate the event IDs for us * Some review comments fixed * Move function out of common and into gmsl * Comment in federationsender destinationqueue * Update gomatrixserverlib
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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, req.URL); 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
domain := device.UserDomain()
mutex, _ := userRoomSendMutexes.LoadOrStore(roomID+userID, &sync.Mutex{})
mutex.(*sync.Mutex).Lock()
defer mutex.(*sync.Mutex).Unlock()
var r map[string]interface{} // must be a JSON object
resErr := httputil.UnmarshalJSONRequest(req, &r)
if resErr != nil {
return *resErr
}
if stateKey != nil {
// If the existing/new state content are equal, return the existing event_id, making the request idempotent.
if resp := stateEqual(req.Context(), rsAPI, eventType, *stateKey, roomID, r); resp != nil {
return *resp
}
}
startedGeneratingEvent := time.Now()
// If we're sending a membership update, make sure to strip the authorised
// via key if it is present, otherwise other servers won't be able to auth
// the event if the room is set to the "restricted" join rule.
if eventType == spec.MRoomMember {
delete(r, "join_authorised_via_users_server")
}
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 == spec.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,
[]*types.HeaderedEvent{
&types.HeaderedEvent{PDU: e},
Further room version wiring (#936) * Room version 2 by default, other wiring updates, update gomatrixserverlib * Fix nil pointer exception * Fix some more nil pointer exceptions hopefully * Update gomatrixserverlib * Send all room versions when joining, not just stable ones * Remove room version cquery * Get room version when getting events from the roomserver database * Reset default back to room version 2 * Don't generate event IDs unless needed * Revert "Remove room version cquery" This reverts commit a170d5873360dd059614460acc8b21ab2cda9767. * Query room version in federation API, client API as needed * Improvements to make_join send_join dance * Make room server producers use headered events * Lint tweaks * Update gomatrixserverlib * Versioned SendJoin * Query room version in syncapi backfill * Handle transaction marshalling/unmarshalling within Dendrite * Sorta fix federation (kinda) * whoops commit federation API too * Use NewEventFromTrustedJSON when getting events from the database * Update gomatrixserverlib * Strip headers on federationapi endpoints * Fix bug in clientapi profile room version query * Update gomatrixserverlib * Return more useful error if room version query doesn't find the room * Update gomatrixserverlib * Update gomatrixserverlib * Maybe fix federation * Fix formatting directive * Update sytest whitelist and blacklist * Temporarily disable room versions 3 and 4 until gmsl is fixed * Fix count of EDUs in logging * Update gomatrixserverlib * Update gomatrixserverlib * Update gomatrixserverlib * Rely on EventBuilder in gmsl to generate the event IDs for us * Some review comments fixed * Move function out of common and into gmsl * Comment in federationsender destinationqueue * Update gomatrixserverlib
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},
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device.UserDomain(),
domain,
domain,
Further room version wiring (#936) * Room version 2 by default, other wiring updates, update gomatrixserverlib * Fix nil pointer exception * Fix some more nil pointer exceptions hopefully * Update gomatrixserverlib * Send all room versions when joining, not just stable ones * Remove room version cquery * Get room version when getting events from the roomserver database * Reset default back to room version 2 * Don't generate event IDs unless needed * Revert "Remove room version cquery" This reverts commit a170d5873360dd059614460acc8b21ab2cda9767. * Query room version in federation API, client API as needed * Improvements to make_join send_join dance * Make room server producers use headered events * Lint tweaks * Update gomatrixserverlib * Versioned SendJoin * Query room version in syncapi backfill * Handle transaction marshalling/unmarshalling within Dendrite * Sorta fix federation (kinda) * whoops commit federation API too * Use NewEventFromTrustedJSON when getting events from the database * Update gomatrixserverlib * Strip headers on federationapi endpoints * Fix bug in clientapi profile room version query * Update gomatrixserverlib * Return more useful error if room version query doesn't find the room * Update gomatrixserverlib * Update gomatrixserverlib * Maybe fix federation * Fix formatting directive * Update sytest whitelist and blacklist * Temporarily disable room versions 3 and 4 until gmsl is fixed * Fix count of EDUs in logging * Update gomatrixserverlib * Update gomatrixserverlib * Update gomatrixserverlib * Rely on EventBuilder in gmsl to generate the event IDs for us * Some review comments fixed * Move function out of common and into gmsl * Comment in federationsender destinationqueue * Update gomatrixserverlib
2020-03-27 16:28:22 +00:00
txnAndSessionID,
Add NATS JetStream support (#1866) * Add NATS JetStream support Update shopify/sarama * Fix addresses * Don't change Addresses in Defaults * Update saramajetstream * Add missing error check Keep typing events for at least one minute * Use all configured NATS addresses * Update saramajetstream * Try setting up with NATS * Make sure NATS uses own persistent directory (TODO: make this configurable) * Update go.mod/go.sum * Jetstream package * Various other refactoring * Build fixes * Config tweaks, make random jetstream storage path for CI * Disable interest policies * Try to sane default on jetstream base path * Try to use in-memory for CI * Restore storage/retention * Update nats.go dependency * Adapt changes to config * Remove unneeded TopicFor * Dep update * Revert "Remove unneeded TopicFor" This reverts commit f5a4e4a339b6f94ec215778dca22204adaa893d1. * Revert changes made to streams * Fix build problems * Update nats-server * Update go.mod/go.sum * Roomserver input API queuing using NATS * Fix topic naming * Prometheus metrics * More refactoring to remove saramajetstream * Add missing topic * Don't try to populate map that doesn't exist * Roomserver output topic * Update go.mod/go.sum * Message acknowledgements * Ack tweaks * Try to resume transaction re-sends * Try to resume transaction re-sends * Update to matrix-org/gomatrixserverlib@91dadfb * Remove internal.PartitionStorer from components that don't consume keychanges * Try to reduce re-allocations a bit in resolveConflictsV2 * Tweak delivery options on RS input * Publish send-to-device messages into correct JetStream subject * Async and sync roomserver input * Update dendrite-config.yaml * Remove roomserver tests for now (they need rewriting) * Remove roomserver test again (was merged back in) * Update documentation * Docker updates * More Docker updates * Update Docker readme again * Fix lint issues * Send final event in `processEvent` synchronously (since this might stop Sytest from being so upset) * Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that * Go 1.16 instead of Go 1.13 for upgrade tests and Complement * Revert "Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that" This reverts commit 368675283fc44501f227639811bdb16dd5deef8c. * Don't report any errors on `/send` to see what fun that creates * Fix panics on closed channel sends * Enforce state key matches sender * Do the same for leave * Various tweaks to make tests happier Squashed commit of the following: commit 13f9028e7a63662759ce7c55504a9d2423058668 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Tue Jan 4 15:47:14 2022 +0000 Do the same for leave commit e6be7f05c349fafbdddfe818337a17a60c867be1 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Tue Jan 4 15:33:42 2022 +0000 Enforce state key matches sender commit 85ede6d64bf10ce9b91cdd6d80f87350ee55242f Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Tue Jan 4 14:07:04 2022 +0000 Fix panics on closed channel sends commit 9755494a98bed62450f8001d8128e40481d27e15 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Tue Jan 4 13:38:22 2022 +0000 Don't report any errors on `/send` to see what fun that creates commit 3bb4f87b5dd56882febb4db5621db484c8789b7c Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Tue Jan 4 13:00:26 2022 +0000 Revert "Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that" This reverts commit 368675283fc44501f227639811bdb16dd5deef8c. commit fe2673ed7be9559eaca134424e403a4faca100b0 Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Tue Jan 4 12:09:34 2022 +0000 Go 1.16 instead of Go 1.13 for upgrade tests and Complement commit 368675283fc44501f227639811bdb16dd5deef8c Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Tue Jan 4 11:51:45 2022 +0000 Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that commit b028dfc08577bcf52e6cb498026e15fa5d46d07c Author: Neil Alexander <neilalexander@users.noreply.github.com> Date: Tue Jan 4 10:29:08 2022 +0000 Send final event in `processEvent` synchronously (since this might stop Sytest from being so upset) * Merge in NATS Server v2.6.6 and nats.go v1.13 into the in-process connection fork * Add `jetstream.WithJetStreamMessage` to make ack/nak-ing less messy, use process context in consumers * Fix consumer component name in federation API * Add comment explaining where streams are defined * Tweaks to roomserver input with comments * Finish that sentence that I apparently forgot to finish in INSTALL.md * Bump version number of config to 2 * Add comments around asynchronous sends to roomserver in processEventWithMissingState * More useful error message when the config version does not match * Set version in generate-config * Fix version in config.Defaults Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
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false,
); err != nil {
util.GetLogger(req.Context()).WithError(err).Error("SendEvents failed")
return jsonerror.InternalServerError()
}
timeToSubmitEvent := time.Since(startedSubmittingEvent)
Further room version wiring (#936) * Room version 2 by default, other wiring updates, update gomatrixserverlib * Fix nil pointer exception * Fix some more nil pointer exceptions hopefully * Update gomatrixserverlib * Send all room versions when joining, not just stable ones * Remove room version cquery * Get room version when getting events from the roomserver database * Reset default back to room version 2 * Don't generate event IDs unless needed * Revert "Remove room version cquery" This reverts commit a170d5873360dd059614460acc8b21ab2cda9767. * Query room version in federation API, client API as needed * Improvements to make_join send_join dance * Make room server producers use headered events * Lint tweaks * Update gomatrixserverlib * Versioned SendJoin * Query room version in syncapi backfill * Handle transaction marshalling/unmarshalling within Dendrite * Sorta fix federation (kinda) * whoops commit federation API too * Use NewEventFromTrustedJSON when getting events from the database * Update gomatrixserverlib * Strip headers on federationapi endpoints * Fix bug in clientapi profile room version query * Update gomatrixserverlib * Return more useful error if room version query doesn't find the room * Update gomatrixserverlib * Update gomatrixserverlib * Maybe fix federation * Fix formatting directive * Update sytest whitelist and blacklist * Temporarily disable room versions 3 and 4 until gmsl is fixed * Fix count of EDUs in logging * Update gomatrixserverlib * Update gomatrixserverlib * Update gomatrixserverlib * Rely on EventBuilder in gmsl to generate the event IDs for us * Some review comments fixed * Move function out of common and into gmsl * Comment in federationsender destinationqueue * Update gomatrixserverlib
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util.GetLogger(req.Context()).WithFields(logrus.Fields{
"event_id": e.EventID(),
Further room version wiring (#936) * Room version 2 by default, other wiring updates, update gomatrixserverlib * Fix nil pointer exception * Fix some more nil pointer exceptions hopefully * Update gomatrixserverlib * Send all room versions when joining, not just stable ones * Remove room version cquery * Get room version when getting events from the roomserver database * Reset default back to room version 2 * Don't generate event IDs unless needed * Revert "Remove room version cquery" This reverts commit a170d5873360dd059614460acc8b21ab2cda9767. * Query room version in federation API, client API as needed * Improvements to make_join send_join dance * Make room server producers use headered events * Lint tweaks * Update gomatrixserverlib * Versioned SendJoin * Query room version in syncapi backfill * Handle transaction marshalling/unmarshalling within Dendrite * Sorta fix federation (kinda) * whoops commit federation API too * Use NewEventFromTrustedJSON when getting events from the database * Update gomatrixserverlib * Strip headers on federationapi endpoints * Fix bug in clientapi profile room version query * Update gomatrixserverlib * Return more useful error if room version query doesn't find the room * Update gomatrixserverlib * Update gomatrixserverlib * Maybe fix federation * Fix formatting directive * Update sytest whitelist and blacklist * Temporarily disable room versions 3 and 4 until gmsl is fixed * Fix count of EDUs in logging * Update gomatrixserverlib * Update gomatrixserverlib * Update gomatrixserverlib * Rely on EventBuilder in gmsl to generate the event IDs for us * Some review comments fixed * Move function out of common and into gmsl * Comment in federationsender destinationqueue * Update gomatrixserverlib
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"room_id": roomID,
"room_version": roomVersion,
Further room version wiring (#936) * Room version 2 by default, other wiring updates, update gomatrixserverlib * Fix nil pointer exception * Fix some more nil pointer exceptions hopefully * Update gomatrixserverlib * Send all room versions when joining, not just stable ones * Remove room version cquery * Get room version when getting events from the roomserver database * Reset default back to room version 2 * Don't generate event IDs unless needed * Revert "Remove room version cquery" This reverts commit a170d5873360dd059614460acc8b21ab2cda9767. * Query room version in federation API, client API as needed * Improvements to make_join send_join dance * Make room server producers use headered events * Lint tweaks * Update gomatrixserverlib * Versioned SendJoin * Query room version in syncapi backfill * Handle transaction marshalling/unmarshalling within Dendrite * Sorta fix federation (kinda) * whoops commit federation API too * Use NewEventFromTrustedJSON when getting events from the database * Update gomatrixserverlib * Strip headers on federationapi endpoints * Fix bug in clientapi profile room version query * Update gomatrixserverlib * Return more useful error if room version query doesn't find the room * Update gomatrixserverlib * Update gomatrixserverlib * Maybe fix federation * Fix formatting directive * Update sytest whitelist and blacklist * Temporarily disable room versions 3 and 4 until gmsl is fixed * Fix count of EDUs in logging * Update gomatrixserverlib * Update gomatrixserverlib * Update gomatrixserverlib * Rely on EventBuilder in gmsl to generate the event IDs for us * Some review comments fixed * Move function out of common and into gmsl * Comment in federationsender destinationqueue * Update gomatrixserverlib
2020-03-27 16:28:22 +00:00
}).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, req.URL, &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
}
// stateEqual compares the new and the existing state event content. If they are equal, returns a *util.JSONResponse
// with the existing event_id, making this an idempotent request.
func stateEqual(ctx context.Context, rsAPI api.ClientRoomserverAPI, eventType, stateKey, roomID string, newContent map[string]interface{}) *util.JSONResponse {
stateRes := api.QueryCurrentStateResponse{}
tuple := gomatrixserverlib.StateKeyTuple{
EventType: eventType,
StateKey: stateKey,
}
err := rsAPI.QueryCurrentState(ctx, &api.QueryCurrentStateRequest{
RoomID: roomID,
StateTuples: []gomatrixserverlib.StateKeyTuple{tuple},
}, &stateRes)
if err != nil {
return nil
}
if existingEvent, ok := stateRes.StateEvents[tuple]; ok {
var existingContent map[string]interface{}
if err = json.Unmarshal(existingEvent.Content(), &existingContent); err != nil {
return nil
}
if reflect.DeepEqual(existingContent, newContent) {
return &util.JSONResponse{
Code: http.StatusOK,
JSON: sendEventResponse{existingEvent.EventID()},
}
}
}
return nil
}
func generateSendEvent(
ctx context.Context,
r map[string]interface{},
device *userapi.Device,
roomID, eventType string, stateKey *string,
cfg *config.ClientAPI,
rsAPI api.ClientRoomserverAPI,
evTime time.Time,
) (gomatrixserverlib.PDU, *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,
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StateKey: stateKey,
}
err := builder.SetContent(r)
if err != nil {
util.GetLogger(ctx).WithError(err).Error("builder.SetContent failed")
resErr := jsonerror.InternalServerError()
return nil, &resErr
}
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identity, err := cfg.Matrix.SigningIdentityFor(device.UserDomain())
if err != nil {
resErr := jsonerror.InternalServerError()
return nil, &resErr
}
var queryRes api.QueryLatestEventsAndStateResponse
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e, err := eventutil.QueryAndBuildEvent(ctx, &builder, cfg.Matrix, identity, 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.PDU, len(queryRes.StateEvents))
for i := range queryRes.StateEvents {
stateEvents[i] = queryRes.StateEvents[i].PDU
}
provider := gomatrixserverlib.NewAuthEvents(gomatrixserverlib.ToPDUs(stateEvents))
if err = gomatrixserverlib.Allowed(e.PDU, &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.PDU, nil
}