0
0
Fork 0
mirror of https://github.com/matrix-org/dendrite synced 2024-12-13 15:03:16 +01:00

Emit redacted_event from the roomserver when redactions are validated (#1186)

* Emit redacted_event from the roomserver when redactions are validated

- Consume them in the currentstateserver and act accordingly.
- Add integration test for the roomserver to check that injecting
  `m.room.redaction` events result in `redacted_event` being emitted.

* Linting

* Ignore events that redact themselves
This commit is contained in:
Kegsay 2020-07-07 12:51:55 +01:00 committed by GitHub
parent d7a8bbff72
commit 99ea1f9b48
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
18 changed files with 406 additions and 107 deletions

View file

@ -61,6 +61,8 @@ func (c *OutputRoomEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
return c.onNewRoomEvent(context.TODO(), *output.NewRoomEvent)
case api.OutputTypeNewInviteEvent:
case api.OutputTypeRetireInviteEvent:
case api.OutputTypeRedactedEvent:
return c.onRedactEvent(context.Background(), *output.RedactedEvent)
default:
log.WithField("type", output.Type).Debug(
"roomserver output log: ignoring unknown output type",
@ -105,6 +107,12 @@ func (c *OutputRoomEventConsumer) onNewRoomEvent(
return nil
}
func (c *OutputRoomEventConsumer) onRedactEvent(
ctx context.Context, msg api.OutputRedactedEvent,
) error {
return c.db.RedactEvent(ctx, msg.RedactedEventID, msg.RedactedBecause)
}
// Start consuming from room servers
func (c *OutputRoomEventConsumer) Start() error {
return c.rsConsumer.Start()

View file

@ -35,4 +35,6 @@ type Database interface {
// GetBulkStateContent returns all state events which match a given room ID and a given state key tuple. Both must be satisfied for a match.
// If a tuple has the StateKey of '*' and allowWildcards=true then all state events with the EventType should be returned.
GetBulkStateContent(ctx context.Context, roomIDs []string, tuples []gomatrixserverlib.StateKeyTuple, allowWildcards bool) ([]tables.StrippedEvent, error)
// Redact a state event
RedactEvent(ctx context.Context, redactedEventID string, redactedBecause gomatrixserverlib.HeaderedEvent) error
}

View file

@ -189,7 +189,6 @@ func (s *currentRoomStateStatements) SelectEventsWithEventIDs(
if err := rows.Scan(&eventBytes); err != nil {
return nil, err
}
// TODO: Handle redacted events
var ev gomatrixserverlib.HeaderedEvent
if err := json.Unmarshal(eventBytes, &ev); err != nil {
return nil, err

View file

@ -17,10 +17,13 @@ package shared
import (
"context"
"database/sql"
"fmt"
"github.com/matrix-org/dendrite/currentstateserver/storage/tables"
"github.com/matrix-org/dendrite/internal/eventutil"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
)
type Database struct {
@ -36,6 +39,28 @@ func (d *Database) GetBulkStateContent(ctx context.Context, roomIDs []string, tu
return d.CurrentRoomState.SelectBulkStateContent(ctx, roomIDs, tuples, allowWildcards)
}
func (d *Database) RedactEvent(ctx context.Context, redactedEventID string, redactedBecause gomatrixserverlib.HeaderedEvent) error {
events, err := d.CurrentRoomState.SelectEventsWithEventIDs(ctx, nil, []string{redactedEventID})
if err != nil {
return err
}
if len(events) != 1 {
// this should never happen but is non-fatal
util.GetLogger(ctx).WithField("redacted_event_id", redactedEventID).WithField("redaction_event_id", redactedBecause.EventID()).Warnf(
"RedactEvent: missing redacted event",
)
return nil
}
redactionEvent := redactedBecause.Unwrap()
eventBeingRedacted := events[0].Unwrap()
redactedEvent, err := eventutil.RedactEvent(&redactionEvent, &eventBeingRedacted)
if err != nil {
return fmt.Errorf("RedactEvent failed: %w", err)
}
// replace the state event with a redacted version of itself
return d.StoreStateEvents(ctx, []gomatrixserverlib.HeaderedEvent{redactedEvent.Headered(redactedBecause.RoomVersion)}, []string{redactedEventID})
}
func (d *Database) StoreStateEvents(ctx context.Context, addStateEvents []gomatrixserverlib.HeaderedEvent,
removeStateEventIDs []string) error {
return sqlutil.WithTransaction(d.DB, func(txn *sql.Tx) error {

View file

@ -162,7 +162,13 @@ func (s *currentRoomStateStatements) SelectEventsWithEventIDs(
iEventIDs[k] = v
}
query := strings.Replace(selectEventsWithEventIDsSQL, "($1)", sqlutil.QueryVariadic(len(iEventIDs)), 1)
rows, err := txn.QueryContext(ctx, query, iEventIDs...)
var rows *sql.Rows
var err error
if txn != nil {
rows, err = txn.QueryContext(ctx, query, iEventIDs...)
} else {
rows, err = s.db.QueryContext(ctx, query, iEventIDs...)
}
if err != nil {
return nil, err
}
@ -173,7 +179,6 @@ func (s *currentRoomStateStatements) SelectEventsWithEventIDs(
if err := rows.Scan(&eventBytes); err != nil {
return nil, err
}
// TODO: Handle redacted events
var ev gomatrixserverlib.HeaderedEvent
if err := json.Unmarshal(eventBytes, &ev); err != nil {
return nil, err

View file

@ -24,6 +24,8 @@ import (
type CurrentRoomState interface {
SelectStateEvent(ctx context.Context, roomID, evType, stateKey string) (*gomatrixserverlib.HeaderedEvent, error)
// SelectEventsWithEventIDs returns the events for the given event IDs. If the event(s) are missing, they are not returned
// and no error is returned.
SelectEventsWithEventIDs(ctx context.Context, txn *sql.Tx, eventIDs []string) ([]gomatrixserverlib.HeaderedEvent, error)
// UpsertRoomState stores the given event in the database, along with an extracted piece of content.
// The piece of content will vary depending on the event type, and table implementations may use this information to optimise

2
go.mod
View file

@ -21,7 +21,7 @@ require (
github.com/matrix-org/go-http-js-libp2p v0.0.0-20200518170932-783164aeeda4
github.com/matrix-org/go-sqlite3-js v0.0.0-20200522092705-bc8506ccbcf3
github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26
github.com/matrix-org/gomatrixserverlib v0.0.0-20200630110352-4948932681fe
github.com/matrix-org/gomatrixserverlib v0.0.0-20200707103800-7470b03f069b
github.com/matrix-org/naffka v0.0.0-20200422140631-181f1ee7401f
github.com/matrix-org/util v0.0.0-20190711121626-527ce5ddefc7
github.com/mattn/go-sqlite3 v2.0.2+incompatible

4
go.sum
View file

@ -421,8 +421,8 @@ github.com/matrix-org/go-sqlite3-js v0.0.0-20200522092705-bc8506ccbcf3 h1:Yb+Wlf
github.com/matrix-org/go-sqlite3-js v0.0.0-20200522092705-bc8506ccbcf3/go.mod h1:e+cg2q7C7yE5QnAXgzo512tgFh1RbQLC0+jozuegKgo=
github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26 h1:Hr3zjRsq2bhrnp3Ky1qgx/fzCtCALOoGYylh2tpS9K4=
github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26/go.mod h1:3fxX6gUjWyI/2Bt7J1OLhpCzOfO/bB3AiX0cJtEKud0=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200630110352-4948932681fe h1:rCjG+azihYsO+EIdm//Zx5gQ7hzeJVraeSukLsW1Mic=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200630110352-4948932681fe/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200707103800-7470b03f069b h1:g1ueoPHI5tpafw/QysVfDw43FwRTPqz8sT+MZbK54yk=
github.com/matrix-org/gomatrixserverlib v0.0.0-20200707103800-7470b03f069b/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
github.com/matrix-org/naffka v0.0.0-20200422140631-181f1ee7401f h1:pRz4VTiRCO4zPlEMc3ESdUOcW4PXHH4Kj+YDz1XyE+Y=
github.com/matrix-org/naffka v0.0.0-20200422140631-181f1ee7401f/go.mod h1:y0oDTjZDv5SM9a2rp3bl+CU+bvTRINQsdb7YlDql5Go=
github.com/matrix-org/util v0.0.0-20190711121626-527ce5ddefc7 h1:ntrLa/8xVzeSs8vHFHK25k0C+NV74sYMJnNSg5NoSRo=

View file

@ -149,3 +149,18 @@ func truncateAuthAndPrevEvents(auth, prev []gomatrixserverlib.EventReference) (
}
return
}
// RedactEvent redacts the given event and sets the unsigned field appropriately. This should be used by
// downstream components to the roomserver when an OutputTypeRedactedEvent occurs.
func RedactEvent(redactionEvent, redactedEvent *gomatrixserverlib.Event) (*gomatrixserverlib.Event, error) {
// sanity check
if redactionEvent.Type() != gomatrixserverlib.MRoomRedaction {
return nil, fmt.Errorf("RedactEvent: redactionEvent isn't a redaction event, is '%s'", redactionEvent.Type())
}
r := redactedEvent.Redact()
err := r.SetUnsignedField("redacted_because", redactionEvent)
if err != nil {
return nil, err
}
return &r, nil
}

View file

@ -28,6 +28,8 @@ const (
OutputTypeNewInviteEvent OutputType = "new_invite_event"
// OutputTypeRetireInviteEvent indicates that the event is an OutputRetireInviteEvent
OutputTypeRetireInviteEvent OutputType = "retire_invite_event"
// OutputTypeRedactedEvent indicates that the event is an OutputRedactedEvent
OutputTypeRedactedEvent OutputType = "redacted_event"
)
// An OutputEvent is an entry in the roomserver output kafka log.
@ -41,6 +43,8 @@ type OutputEvent struct {
NewInviteEvent *OutputNewInviteEvent `json:"new_invite_event,omitempty"`
// The content of event with type OutputTypeRetireInviteEvent
RetireInviteEvent *OutputRetireInviteEvent `json:"retire_invite_event,omitempty"`
// The content of event with type OutputTypeRedactedEvent
RedactedEvent *OutputRedactedEvent `json:"redacted_event,omitempty"`
}
// An OutputNewRoomEvent is written when the roomserver receives a new event.
@ -165,3 +169,13 @@ type OutputRetireInviteEvent struct {
// "leave" or "ban".
Membership string
}
// An OutputRedactedEvent is written whenever a redaction has been /validated/.
// Downstream components MUST redact the given event ID if they have stored the
// event JSON. It is guaranteed that this event ID has been seen before.
type OutputRedactedEvent struct {
// The event ID that was redacted
RedactedEventID string
// The value of `unsigned.redacted_because` - the redaction event itself
RedactedBecause gomatrixserverlib.HeaderedEvent
}

View file

@ -19,6 +19,7 @@ package internal
import (
"context"
"github.com/matrix-org/dendrite/internal/eventutil"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/roomserver/state"
"github.com/matrix-org/dendrite/roomserver/types"
@ -31,6 +32,8 @@ import (
// TODO(#375): This should be rewritten to allow concurrent calls. The
// difficulty is in ensuring that we correctly annotate events with the correct
// state deltas when sending to kafka streams
// TODO: Break up function - we should probably do transaction ID checks before calling this.
// nolint:gocyclo
func (r *RoomserverInternalAPI) processRoomEvent(
ctx context.Context,
input api.InputRoomEvent,
@ -60,10 +63,18 @@ func (r *RoomserverInternalAPI) processRoomEvent(
}
// Store the event.
roomNID, stateAtEvent, err := r.DB.StoreEvent(ctx, event, input.TransactionID, authEventNIDs)
roomNID, stateAtEvent, redactionEvent, redactedEventID, err := r.DB.StoreEvent(ctx, event, input.TransactionID, authEventNIDs)
if err != nil {
return
}
// if storing this event results in it being redacted then do so.
if redactedEventID == event.EventID() {
r, rerr := eventutil.RedactEvent(redactionEvent, &event)
if rerr != nil {
return "", rerr
}
event = *r
}
// For outliers we can stop after we've stored the event itself as it
// doesn't have any associated state to store and we don't need to
@ -97,6 +108,25 @@ func (r *RoomserverInternalAPI) processRoomEvent(
return
}
// processing this event resulted in an event (which may not be the one we're processing)
// being redacted. We are guaranteed to have both sides (the redaction/redacted event),
// so notify downstream components to redact this event - they should have it if they've
// been tracking our output log.
if redactedEventID != "" {
err = r.WriteOutputEvents(event.RoomID(), []api.OutputEvent{
{
Type: api.OutputTypeRedactedEvent,
RedactedEvent: &api.OutputRedactedEvent{
RedactedEventID: redactedEventID,
RedactedBecause: redactionEvent.Headered(headered.RoomVersion),
},
},
})
if err != nil {
return
}
}
// Update the extremities of the event graph for the room
return event.EventID(), nil
}

View file

@ -880,11 +880,24 @@ func persistEvents(ctx context.Context, db storage.Database, events []gomatrixse
i++
}
var stateAtEvent types.StateAtEvent
roomNID, stateAtEvent, err = db.StoreEvent(ctx, ev.Unwrap(), nil, authNids)
var redactedEventID string
var redactionEvent *gomatrixserverlib.Event
roomNID, stateAtEvent, redactionEvent, redactedEventID, err = db.StoreEvent(ctx, ev.Unwrap(), nil, authNids)
if err != nil {
logrus.WithError(err).WithField("event_id", ev.EventID()).Error("Failed to persist event")
continue
}
// If storing this event results in it being redacted, then do so.
// It's also possible for this event to be a redaction which results in another event being
// redacted, which we don't care about since we aren't returning it in this backfill.
if redactedEventID == ev.EventID() {
ev = ev.Redact().Headered(ev.RoomVersion)
err = ev.SetUnsignedField("redacted_because", redactionEvent)
if err != nil {
logrus.WithError(err).WithField("event_id", ev.EventID()).Error("Failed to set unsigned field")
continue
}
}
backfilledEventMap[ev.EventID()] = types.Event{
EventNID: stateAtEvent.StateEntry.EventNID,
Event: ev.Unwrap(),

View file

@ -0,0 +1,173 @@
package roomserver
import (
"context"
"encoding/json"
"fmt"
"os"
"reflect"
"testing"
"github.com/Shopify/sarama"
"github.com/matrix-org/dendrite/internal/caching"
"github.com/matrix-org/dendrite/internal/config"
"github.com/matrix-org/dendrite/internal/setup"
"github.com/matrix-org/dendrite/internal/test"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/gomatrixserverlib"
)
const (
testOrigin = gomatrixserverlib.ServerName("kaer.morhen")
// we have to use an on-disk DB because we open multiple connections due to the *Updater structs.
// Using :memory: results in a brand new DB for each open connection, and sharing memory via
// ?cache=shared just allows read-only sharing, so writes to the database on other connections are lost.
roomserverDBFileURI = "file:roomserver_test.db"
roomserverDBFilePath = "./roomserver_test.db"
)
var (
ctx = context.Background()
)
type dummyProducer struct {
topic string
producedMessages []*api.OutputEvent
}
// SendMessage produces a given message, and returns only when it either has
// succeeded or failed to produce. It will return the partition and the offset
// of the produced message, or an error if the message failed to produce.
func (p *dummyProducer) SendMessage(msg *sarama.ProducerMessage) (partition int32, offset int64, err error) {
if msg.Topic != p.topic {
return 0, 0, nil
}
be := msg.Value.(sarama.ByteEncoder)
b := json.RawMessage(be)
fmt.Println("SENDING >>>>>>>> ", string(b))
var out api.OutputEvent
err = json.Unmarshal(b, &out)
if err != nil {
return 0, 0, err
}
p.producedMessages = append(p.producedMessages, &out)
return 0, 0, nil
}
// SendMessages produces a given set of messages, and returns only when all
// messages in the set have either succeeded or failed. Note that messages
// can succeed and fail individually; if some succeed and some fail,
// SendMessages will return an error.
func (p *dummyProducer) SendMessages(msgs []*sarama.ProducerMessage) error {
for _, m := range msgs {
p.SendMessage(m)
}
return nil
}
// Close shuts down the producer and waits for any buffered messages to be
// flushed. You must call this function before a producer object passes out of
// scope, as it may otherwise leak memory. You must call this before calling
// Close on the underlying client.
func (p *dummyProducer) Close() error {
return nil
}
func deleteDatabase() {
err := os.Remove(roomserverDBFilePath)
if err != nil {
fmt.Printf("failed to delete database %s: %s\n", roomserverDBFilePath, err)
}
}
func mustLoadEvents(t *testing.T, ver gomatrixserverlib.RoomVersion, events []json.RawMessage) []gomatrixserverlib.HeaderedEvent {
hs := make([]gomatrixserverlib.HeaderedEvent, len(events))
for i := range events {
e, err := gomatrixserverlib.NewEventFromTrustedJSON(events[i], false, ver)
if err != nil {
t.Fatalf("cannot load test data: " + err.Error())
}
h := e.Headered(ver)
hs[i] = h
}
return hs
}
func mustSendEvents(t *testing.T, ver gomatrixserverlib.RoomVersion, events []json.RawMessage) (api.RoomserverInternalAPI, *dummyProducer, []gomatrixserverlib.HeaderedEvent) {
cfg := &config.Dendrite{}
cfg.Database.RoomServer = roomserverDBFileURI
cfg.Kafka.Topics.OutputRoomEvent = "output_room_event"
cfg.Matrix.ServerName = testOrigin
cfg.Kafka.UseNaffka = true
dp := &dummyProducer{
topic: string(cfg.Kafka.Topics.OutputRoomEvent),
}
cache, err := caching.NewInMemoryLRUCache(true)
if err != nil {
t.Fatalf("failed to make caches: %s", err)
}
base := &setup.BaseDendrite{
KafkaProducer: dp,
Caches: cache,
Cfg: cfg,
}
rsAPI := NewInternalAPI(base, &test.NopJSONVerifier{}, nil)
hevents := mustLoadEvents(t, ver, events)
_, err = api.SendEvents(ctx, rsAPI, hevents, testOrigin, nil)
if err != nil {
t.Errorf("failed to SendEvents: %s", err)
}
return rsAPI, dp, hevents
}
func TestOutputRedactedEvent(t *testing.T) {
redactionEvents := []json.RawMessage{
// create event
[]byte(`{"auth_events":[],"content":{"creator":"@userid:kaer.morhen"},"depth":0,"event_id":"$N4us6vqqq3RjvpKd:kaer.morhen","hashes":{"sha256":"WTdrCn/YsiounXcJPsLP8xT0ZjHiO5Ov0NvXYmK2onE"},"origin":"kaer.morhen","origin_server_ts":0,"prev_events":[],"prev_state":[],"room_id":"!roomid:kaer.morhen","sender":"@userid:kaer.morhen","signatures":{"kaer.morhen":{"ed25519:auto":"9+5JcpaN5b5KlHYHGp6r+GoNDH98lbfzGYwjfxensa5C5D/bDACaYnMDLnhwsHOE5nxgI+jT/GV271pz6PMSBQ"}},"state_key":"","type":"m.room.create"}`),
// join event
[]byte(`{"auth_events":[["$N4us6vqqq3RjvpKd:kaer.morhen",{"sha256":"SylirfgfXFhscZL7p10NmOa1nFFEckiwz0lAideQMIM"}]],"content":{"membership":"join"},"depth":1,"event_id":"$6sUiGPQ0a3tqYGKo:kaer.morhen","hashes":{"sha256":"eYVBC7RO+FlxRyW1aXYf/ad4Dzi7T93tArdGw3r4RwQ"},"origin":"kaer.morhen","origin_server_ts":0,"prev_events":[["$N4us6vqqq3RjvpKd:kaer.morhen",{"sha256":"SylirfgfXFhscZL7p10NmOa1nFFEckiwz0lAideQMIM"}]],"prev_state":[],"room_id":"!roomid:kaer.morhen","sender":"@userid:kaer.morhen","signatures":{"kaer.morhen":{"ed25519:auto":"tiDBTPFa53YMfHiupX3vSRE/ZcCiCjmGt7gDpIpDpwZapeays5Vqqcqb7KiywrDldpTkrrdJBAw2jXcq6ZyhDw"}},"state_key":"@userid:kaer.morhen","type":"m.room.member"}`),
// room name
[]byte(`{"auth_events":[["$N4us6vqqq3RjvpKd:kaer.morhen",{"sha256":"SylirfgfXFhscZL7p10NmOa1nFFEckiwz0lAideQMIM"}],["$6sUiGPQ0a3tqYGKo:kaer.morhen",{"sha256":"IS4HSMqpqVUGh1Z3qgC99YcaizjCoO4yFhYYe8j53IE"}]],"content":{"name":"My Room Name"},"depth":2,"event_id":"$VC1zZ9YWwuUbSNHD:kaer.morhen","hashes":{"sha256":"bpqTkfLx6KHzWz7/wwpsXnXwJWEGW14aV63ffexzDFg"},"origin":"kaer.morhen","origin_server_ts":0,"prev_events":[["$6sUiGPQ0a3tqYGKo:kaer.morhen",{"sha256":"IS4HSMqpqVUGh1Z3qgC99YcaizjCoO4yFhYYe8j53IE"}]],"prev_state":[],"room_id":"!roomid:kaer.morhen","sender":"@userid:kaer.morhen","signatures":{"kaer.morhen":{"ed25519:auto":"mhJZ3X4bAKrF/T0mtPf1K2Tmls0h6xGY1IPDpJ/SScQBqDlu3HQR2BPa7emqj5bViyLTWVNh+ZCpzx/6STTrAg"}},"state_key":"","type":"m.room.name"}`),
// redact room name
[]byte(`{"auth_events":[["$N4us6vqqq3RjvpKd:kaer.morhen",{"sha256":"SylirfgfXFhscZL7p10NmOa1nFFEckiwz0lAideQMIM"}],["$6sUiGPQ0a3tqYGKo:kaer.morhen",{"sha256":"IS4HSMqpqVUGh1Z3qgC99YcaizjCoO4yFhYYe8j53IE"}]],"content":{"reason":"Spamming"},"depth":3,"event_id":"$tJI0pE3b8u9UMYpT:kaer.morhen","hashes":{"sha256":"/3TStqa5SQqYaEtl7ajEvSRvu6d12MMKfICUzrBpd2Q"},"origin":"kaer.morhen","origin_server_ts":0,"prev_events":[["$VC1zZ9YWwuUbSNHD:kaer.morhen",{"sha256":"+l8cNa7syvm0EF7CAmQRlYknLEMjivnI4FLhB/TUBEY"}]],"redacts":"$VC1zZ9YWwuUbSNHD:kaer.morhen","room_id":"!roomid:kaer.morhen","sender":"@userid:kaer.morhen","signatures":{"kaer.morhen":{"ed25519:auto":"QBOh+amf0vTJbm6+9VwAcR9uJviBIor2KON0Y7+EyQx5YbUZEzW1HPeJxarLIHBcxMzgOVzjuM+StzjbUgDzAg"}},"type":"m.room.redaction"}`),
// message
[]byte(`{"auth_events":[["$N4us6vqqq3RjvpKd:kaer.morhen",{"sha256":"SylirfgfXFhscZL7p10NmOa1nFFEckiwz0lAideQMIM"}],["$6sUiGPQ0a3tqYGKo:kaer.morhen",{"sha256":"IS4HSMqpqVUGh1Z3qgC99YcaizjCoO4yFhYYe8j53IE"}]],"content":{"body":"Test Message"},"depth":4,"event_id":"$o8KHsgSIYbJrddnd:kaer.morhen","hashes":{"sha256":"IE/rGVlKOpiGWeIo887g1CK1drYqcWDZhL6THZHkJ1c"},"origin":"kaer.morhen","origin_server_ts":0,"prev_events":[["$tJI0pE3b8u9UMYpT:kaer.morhen",{"sha256":"zvmwyXuDox7jpA16JRH6Fc1zbfQht2tpkBbMTUOi3Jw"}]],"room_id":"!roomid:kaer.morhen","sender":"@userid:kaer.morhen","signatures":{"kaer.morhen":{"ed25519:auto":"/3z+pJjiJXWhwfqIEzmNksvBHCoXTktK/y0rRuWJXw6i1+ygRG/suDCKhFuuz6gPapRmEMPVILi2mJqHHXPKAg"}},"type":"m.room.message"}`),
// redact previous message
[]byte(`{"auth_events":[["$N4us6vqqq3RjvpKd:kaer.morhen",{"sha256":"SylirfgfXFhscZL7p10NmOa1nFFEckiwz0lAideQMIM"}],["$6sUiGPQ0a3tqYGKo:kaer.morhen",{"sha256":"IS4HSMqpqVUGh1Z3qgC99YcaizjCoO4yFhYYe8j53IE"}]],"content":{"reason":"Spamming more"},"depth":5,"event_id":"$UpsE8belb2gJItJG:kaer.morhen","hashes":{"sha256":"zU8PWJOld/I7OtjdpltFSKC+DMNm2ZyEXAHcprsafD0"},"origin":"kaer.morhen","origin_server_ts":0,"prev_events":[["$o8KHsgSIYbJrddnd:kaer.morhen",{"sha256":"UgjMuCFXH4warIjKuwlRq9zZ6dSJrZWCd+CkqtgLSHM"}]],"redacts":"$o8KHsgSIYbJrddnd:kaer.morhen","room_id":"!roomid:kaer.morhen","sender":"@userid:kaer.morhen","signatures":{"kaer.morhen":{"ed25519:auto":"zxFGr/7aGOzqOEN6zRNrBpFkkMnfGFPbCteYL33wC+PycBPIK+2WRa5qlAR2+lcLiK3HjIzwRYkKNsVFTqvRAw"}},"type":"m.room.redaction"}`),
}
var redactedOutputs []api.OutputEvent
deleteDatabase()
_, producer, hevents := mustSendEvents(t, gomatrixserverlib.RoomVersionV1, redactionEvents)
defer deleteDatabase()
for _, msg := range producer.producedMessages {
if msg.Type == api.OutputTypeRedactedEvent {
redactedOutputs = append(redactedOutputs, *msg)
}
}
wantRedactedOutputs := []api.OutputEvent{
{
Type: api.OutputTypeRedactedEvent,
RedactedEvent: &api.OutputRedactedEvent{
RedactedEventID: hevents[2].EventID(),
RedactedBecause: hevents[3],
},
},
{
Type: api.OutputTypeRedactedEvent,
RedactedEvent: &api.OutputRedactedEvent{
RedactedEventID: hevents[4].EventID(),
RedactedBecause: hevents[5],
},
},
}
t.Logf("redactedOutputs: %+v", redactedOutputs)
if len(wantRedactedOutputs) != len(redactedOutputs) {
t.Fatalf("Got %d redacted events, want %d", len(redactedOutputs), len(wantRedactedOutputs))
}
for i := 0; i < len(wantRedactedOutputs); i++ {
if !reflect.DeepEqual(*redactedOutputs[i].RedactedEvent, *wantRedactedOutputs[i].RedactedEvent) {
t.Errorf("OutputRedactionEvent %d: wrong event got:\n%+v want:\n%+v", i+1, redactedOutputs[i].RedactedEvent, wantRedactedOutputs[i].RedactedEvent)
}
}
}

View file

@ -63,8 +63,10 @@ type Database interface {
SnapshotNIDFromEventID(ctx context.Context, eventID string) (types.StateSnapshotNID, error)
// Look up a room version from the room NID.
GetRoomVersionForRoomNID(ctx context.Context, roomNID types.RoomNID) (gomatrixserverlib.RoomVersion, error)
// Stores a matrix room event in the database
StoreEvent(ctx context.Context, event gomatrixserverlib.Event, txnAndSessionID *api.TransactionID, authEventNIDs []types.EventNID) (types.RoomNID, types.StateAtEvent, error)
// Stores a matrix room event in the database. Returns the room NID, the state snapshot and the redacted event ID if any, or an error.
StoreEvent(
ctx context.Context, event gomatrixserverlib.Event, txnAndSessionID *api.TransactionID, authEventNIDs []types.EventNID,
) (types.RoomNID, types.StateAtEvent, *gomatrixserverlib.Event, string, error)
// Look up the state entries for a list of string event IDs
// Returns an error if the there is an error talking to the database
// Returns a types.MissingEventError if the event IDs aren't in the database.

View file

@ -41,11 +41,11 @@ const insertRedactionSQL = "" +
"INSERT INTO roomserver_redactions (redaction_event_id, redacts_event_id, validated)" +
" VALUES ($1, $2, $3)"
const selectRedactedEventSQL = "" +
const selectRedactionInfoByRedactionEventIDSQL = "" +
"SELECT redaction_event_id, redacts_event_id, validated FROM roomserver_redactions" +
" WHERE redaction_event_id = $1"
const selectRedactionEventSQL = "" +
const selectRedactionInfoByEventBeingRedactedSQL = "" +
"SELECT redaction_event_id, redacts_event_id, validated FROM roomserver_redactions" +
" WHERE redacts_event_id = $1"
@ -53,10 +53,10 @@ const markRedactionValidatedSQL = "" +
" UPDATE roomserver_redactions SET validated = $2 WHERE redaction_event_id = $1"
type redactionStatements struct {
insertRedactionStmt *sql.Stmt
selectRedactedEventStmt *sql.Stmt
selectRedactionEventStmt *sql.Stmt
markRedactionValidatedStmt *sql.Stmt
insertRedactionStmt *sql.Stmt
selectRedactionInfoByRedactionEventIDStmt *sql.Stmt
selectRedactionInfoByEventBeingRedactedStmt *sql.Stmt
markRedactionValidatedStmt *sql.Stmt
}
func NewPostgresRedactionsTable(db *sql.DB) (tables.Redactions, error) {
@ -68,8 +68,8 @@ func NewPostgresRedactionsTable(db *sql.DB) (tables.Redactions, error) {
return s, shared.StatementList{
{&s.insertRedactionStmt, insertRedactionSQL},
{&s.selectRedactedEventStmt, selectRedactedEventSQL},
{&s.selectRedactionEventStmt, selectRedactionEventSQL},
{&s.selectRedactionInfoByRedactionEventIDStmt, selectRedactionInfoByRedactionEventIDSQL},
{&s.selectRedactionInfoByEventBeingRedactedStmt, selectRedactionInfoByEventBeingRedactedSQL},
{&s.markRedactionValidatedStmt, markRedactionValidatedSQL},
}.Prepare(db)
}
@ -82,32 +82,32 @@ func (s *redactionStatements) InsertRedaction(
return err
}
func (s *redactionStatements) SelectRedactedEvent(
func (s *redactionStatements) SelectRedactionInfoByRedactionEventID(
ctx context.Context, txn *sql.Tx, redactionEventID string,
) (info *tables.RedactionInfo, err error) {
info = &tables.RedactionInfo{}
stmt := sqlutil.TxStmt(txn, s.selectRedactedEventStmt)
stmt := sqlutil.TxStmt(txn, s.selectRedactionInfoByRedactionEventIDStmt)
err = stmt.QueryRowContext(ctx, redactionEventID).Scan(
&info.RedactionEventID, &info.RedactsEventID, &info.Validated,
)
if err == sql.ErrNoRows {
err = nil
info = nil
err = nil
}
return
}
func (s *redactionStatements) SelectRedactionEvent(
ctx context.Context, txn *sql.Tx, redactedEventID string,
func (s *redactionStatements) SelectRedactionInfoByEventBeingRedacted(
ctx context.Context, txn *sql.Tx, eventID string,
) (info *tables.RedactionInfo, err error) {
info = &tables.RedactionInfo{}
stmt := sqlutil.TxStmt(txn, s.selectRedactionEventStmt)
err = stmt.QueryRowContext(ctx, redactedEventID).Scan(
stmt := sqlutil.TxStmt(txn, s.selectRedactionInfoByEventBeingRedactedStmt)
err = stmt.QueryRowContext(ctx, eventID).Scan(
&info.RedactionEventID, &info.RedactsEventID, &info.Validated,
)
if err == sql.ErrNoRows {
err = nil
info = nil
err = nil
}
return
}

View file

@ -4,7 +4,6 @@ import (
"context"
"database/sql"
"encoding/json"
"fmt"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/roomserver/api"
@ -345,13 +344,15 @@ func (d *Database) GetLatestEventsForUpdate(
func (d *Database) StoreEvent(
ctx context.Context, event gomatrixserverlib.Event,
txnAndSessionID *api.TransactionID, authEventNIDs []types.EventNID,
) (types.RoomNID, types.StateAtEvent, error) {
) (types.RoomNID, types.StateAtEvent, *gomatrixserverlib.Event, string, error) {
var (
roomNID types.RoomNID
eventTypeNID types.EventTypeNID
eventStateKeyNID types.EventStateKeyNID
eventNID types.EventNID
stateNID types.StateSnapshotNID
redactionEvent *gomatrixserverlib.Event
redactedEventID string
err error
)
@ -419,11 +420,11 @@ func (d *Database) StoreEvent(
if err = d.EventJSONTable.InsertEventJSON(ctx, txn, eventNID, event.JSON()); err != nil {
return err
}
return d.handleRedactions(ctx, txn, eventNID, event)
redactionEvent, redactedEventID, err = d.handleRedactions(ctx, txn, eventNID, event)
return err
})
if err != nil {
return 0, types.StateAtEvent{}, err
return 0, types.StateAtEvent{}, nil, "", err
}
return roomNID, types.StateAtEvent{
@ -435,7 +436,7 @@ func (d *Database) StoreEvent(
},
EventNID: eventNID,
},
}, nil
}, redactionEvent, redactedEventID, nil
}
func (d *Database) PublishRoom(ctx context.Context, roomID string, publish bool) error {
@ -531,20 +532,42 @@ func extractRoomVersionFromCreateEvent(event gomatrixserverlib.Event) (
// When an event is redacted, the redacted event JSON is modified to add an `unsigned.redacted_because` field. We use this field
// when loading events to determine whether to apply redactions. This keeps the hot-path of reading events quick as we don't need
// to cross-reference with other tables when loading.
func (d *Database) handleRedactions(ctx context.Context, txn *sql.Tx, eventNID types.EventNID, event gomatrixserverlib.Event) error {
//
// Returns the redaction event and the event ID of the redacted event if this call resulted in a redaction.
func (d *Database) handleRedactions(
ctx context.Context, txn *sql.Tx, eventNID types.EventNID, event gomatrixserverlib.Event,
) (*gomatrixserverlib.Event, string, error) {
var err error
isRedactionEvent := event.Type() == gomatrixserverlib.MRoomRedaction && event.StateKey() == nil
if isRedactionEvent {
// an event which redacts itself should be ignored
if event.EventID() == event.Redacts() {
return nil, "", nil
}
err = d.RedactionsTable.InsertRedaction(ctx, txn, tables.RedactionInfo{
Validated: false,
RedactionEventID: event.EventID(),
RedactsEventID: event.Redacts(),
})
if err != nil {
return nil, "", err
}
}
redactionEvent, redactedEvent, validated, err := d.loadRedactionPair(ctx, txn, eventNID, event)
if err != nil {
return err
return nil, "", err
}
if validated || redactedEvent == nil || redactionEvent == nil {
// we've seen this redaction before or there is nothing to redact
return nil
return nil, "", nil
}
// mark the event as redacted
err = redactedEvent.SetUnsignedField("redacted_because", redactionEvent)
if err != nil {
return err
return nil, "", err
}
if redactionsArePermanent {
redactedEvent.Event = redactedEvent.Redact()
@ -552,82 +575,51 @@ func (d *Database) handleRedactions(ctx context.Context, txn *sql.Tx, eventNID t
// overwrite the eventJSON table
err = d.EventJSONTable.InsertEventJSON(ctx, txn, redactedEvent.EventNID, redactedEvent.JSON())
if err != nil {
return err
return nil, "", err
}
return d.RedactionsTable.MarkRedactionValidated(ctx, txn, redactionEvent.EventID(), true)
return &redactionEvent.Event, redactedEvent.EventID(), d.RedactionsTable.MarkRedactionValidated(ctx, txn, redactionEvent.EventID(), true)
}
// loadRedactionPair returns both the redaction event and the redacted event, else nil.
// nolint:gocyclo
func (d *Database) loadRedactionPair(
ctx context.Context, txn *sql.Tx, eventNID types.EventNID, event gomatrixserverlib.Event,
) (*types.Event, *types.Event, bool, error) {
var redactionEvent, redactedEvent *types.Event
var info *tables.RedactionInfo
var nids map[string]types.EventNID
var evs []types.Event
var err error
isRedactionEvent := event.Type() == gomatrixserverlib.MRoomRedaction && event.StateKey() == nil
var eventBeingRedacted string
if isRedactionEvent {
eventBeingRedacted = event.Redacts()
redactionEvent = &types.Event{
EventNID: eventNID,
Event: event,
}
// find the redacted event if one exists
info, err = d.RedactionsTable.SelectRedactedEvent(ctx, txn, event.EventID())
if err != nil {
return nil, nil, false, err
}
if info == nil {
// we don't have the redacted event yet
return nil, nil, false, nil
}
nids, err = d.EventNIDs(ctx, []string{info.RedactsEventID})
if err != nil {
return nil, nil, false, err
}
if len(nids) == 0 {
return nil, nil, false, fmt.Errorf("redaction: missing event NID being redacted: %+v", info)
}
evs, err = d.Events(ctx, []types.EventNID{nids[info.RedactsEventID]})
if err != nil {
return nil, nil, false, err
}
if len(evs) != 1 {
return nil, nil, false, fmt.Errorf("redaction: missing event being redacted: %+v", info)
}
redactedEvent = &evs[0]
} else {
eventBeingRedacted = event.EventID() // maybe, we'll see if we have info
redactedEvent = &types.Event{
EventNID: eventNID,
Event: event,
}
// find the redaction event if one exists
info, err = d.RedactionsTable.SelectRedactionEvent(ctx, txn, event.EventID())
if err != nil {
return nil, nil, false, err
}
if info == nil {
// this event is not redacted
return nil, nil, false, nil
}
nids, err = d.EventNIDs(ctx, []string{info.RedactionEventID})
if err != nil {
return nil, nil, false, err
}
if len(nids) == 0 {
return nil, nil, false, fmt.Errorf("redaction: missing redaction event NID: %+v", info)
}
evs, err = d.Events(ctx, []types.EventNID{nids[info.RedactionEventID]})
if err != nil {
return nil, nil, false, err
}
if len(evs) != 1 {
return nil, nil, false, fmt.Errorf("redaction: missing redaction event: %+v", info)
}
redactionEvent = &evs[0]
}
info, err = d.RedactionsTable.SelectRedactionInfoByEventBeingRedacted(ctx, txn, eventBeingRedacted)
if err != nil {
return nil, nil, false, err
}
if info == nil {
// this event hasn't been redacted or we don't have the redaction for it yet
return nil, nil, false, nil
}
if isRedactionEvent {
redactedEvent = d.loadEvent(ctx, info.RedactsEventID)
} else {
redactionEvent = d.loadEvent(ctx, info.RedactionEventID)
}
return redactionEvent, redactedEvent, info.Validated, nil
}
@ -639,3 +631,22 @@ func (d *Database) applyRedactions(events []types.Event) {
}
}
}
// loadEvent loads a single event or returns nil on any problems/missing event
func (d *Database) loadEvent(ctx context.Context, eventID string) *types.Event {
nids, err := d.EventNIDs(ctx, []string{eventID})
if err != nil {
return nil
}
if len(nids) == 0 {
return nil
}
evs, err := d.Events(ctx, []types.EventNID{nids[eventID]})
if err != nil {
return nil
}
if len(evs) != 1 {
return nil
}
return &evs[0]
}

View file

@ -40,11 +40,11 @@ const insertRedactionSQL = "" +
"INSERT INTO roomserver_redactions (redaction_event_id, redacts_event_id, validated)" +
" VALUES ($1, $2, $3)"
const selectRedactedEventSQL = "" +
const selectRedactionInfoByRedactionEventIDSQL = "" +
"SELECT redaction_event_id, redacts_event_id, validated FROM roomserver_redactions" +
" WHERE redaction_event_id = $1"
const selectRedactionEventSQL = "" +
const selectRedactionInfoByEventBeingRedactedSQL = "" +
"SELECT redaction_event_id, redacts_event_id, validated FROM roomserver_redactions" +
" WHERE redacts_event_id = $1"
@ -52,10 +52,10 @@ const markRedactionValidatedSQL = "" +
" UPDATE roomserver_redactions SET validated = $2 WHERE redaction_event_id = $1"
type redactionStatements struct {
insertRedactionStmt *sql.Stmt
selectRedactedEventStmt *sql.Stmt
selectRedactionEventStmt *sql.Stmt
markRedactionValidatedStmt *sql.Stmt
insertRedactionStmt *sql.Stmt
selectRedactionInfoByRedactionEventIDStmt *sql.Stmt
selectRedactionInfoByEventBeingRedactedStmt *sql.Stmt
markRedactionValidatedStmt *sql.Stmt
}
func NewSqliteRedactionsTable(db *sql.DB) (tables.Redactions, error) {
@ -67,8 +67,8 @@ func NewSqliteRedactionsTable(db *sql.DB) (tables.Redactions, error) {
return s, shared.StatementList{
{&s.insertRedactionStmt, insertRedactionSQL},
{&s.selectRedactedEventStmt, selectRedactedEventSQL},
{&s.selectRedactionEventStmt, selectRedactionEventSQL},
{&s.selectRedactionInfoByRedactionEventIDStmt, selectRedactionInfoByRedactionEventIDSQL},
{&s.selectRedactionInfoByEventBeingRedactedStmt, selectRedactionInfoByEventBeingRedactedSQL},
{&s.markRedactionValidatedStmt, markRedactionValidatedSQL},
}.Prepare(db)
}
@ -81,11 +81,11 @@ func (s *redactionStatements) InsertRedaction(
return err
}
func (s *redactionStatements) SelectRedactedEvent(
func (s *redactionStatements) SelectRedactionInfoByRedactionEventID(
ctx context.Context, txn *sql.Tx, redactionEventID string,
) (info *tables.RedactionInfo, err error) {
info = &tables.RedactionInfo{}
stmt := sqlutil.TxStmt(txn, s.selectRedactedEventStmt)
stmt := sqlutil.TxStmt(txn, s.selectRedactionInfoByRedactionEventIDStmt)
err = stmt.QueryRowContext(ctx, redactionEventID).Scan(
&info.RedactionEventID, &info.RedactsEventID, &info.Validated,
)
@ -96,12 +96,12 @@ func (s *redactionStatements) SelectRedactedEvent(
return
}
func (s *redactionStatements) SelectRedactionEvent(
ctx context.Context, txn *sql.Tx, redactedEventID string,
func (s *redactionStatements) SelectRedactionInfoByEventBeingRedacted(
ctx context.Context, txn *sql.Tx, eventID string,
) (info *tables.RedactionInfo, err error) {
info = &tables.RedactionInfo{}
stmt := sqlutil.TxStmt(txn, s.selectRedactionEventStmt)
err = stmt.QueryRowContext(ctx, redactedEventID).Scan(
stmt := sqlutil.TxStmt(txn, s.selectRedactionInfoByEventBeingRedactedStmt)
err = stmt.QueryRowContext(ctx, eventID).Scan(
&info.RedactionEventID, &info.RedactsEventID, &info.Validated,
)
if err == sql.ErrNoRows {

View file

@ -139,10 +139,10 @@ type RedactionInfo struct {
type Redactions interface {
InsertRedaction(ctx context.Context, txn *sql.Tx, info RedactionInfo) error
// SelectRedactedEvent returns the redaction info for the given redaction event ID, or nil if there is no match.
SelectRedactedEvent(ctx context.Context, txn *sql.Tx, redactionEventID string) (*RedactionInfo, error)
// SelectRedactionEvent returns the redaction info for the given redacted event ID, or nil if there is no match.
SelectRedactionEvent(ctx context.Context, txn *sql.Tx, redactedEventID string) (*RedactionInfo, error)
// SelectRedactionInfoByRedactionEventID returns the redaction info for the given redaction event ID, or nil if there is no match.
SelectRedactionInfoByRedactionEventID(ctx context.Context, txn *sql.Tx, redactionEventID string) (*RedactionInfo, error)
// SelectRedactionInfoByEventBeingRedacted returns the redaction info for the given redacted event ID, or nil if there is no match.
SelectRedactionInfoByEventBeingRedacted(ctx context.Context, txn *sql.Tx, eventID string) (*RedactionInfo, error)
// Mark this redaction event as having been validated. This means we have both sides of the redaction and have
// successfully redacted the event JSON.
MarkRedactionValidated(ctx context.Context, txn *sql.Tx, redactionEventID string, validated bool) error