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// Copyright 2017 Vector Creations Ltd
// Copyright 2017-2018 New Vector Ltd
// Copyright 2019-2020 The Matrix.org Foundation C.I.C.
//
// 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 input
import (
"context"
"encoding/json"
"time"
"github.com/Shopify/sarama"
"github.com/matrix-org/dendrite/clientapi/auth/storage/devices"
"github.com/matrix-org/dendrite/eduserver/api"
"github.com/matrix-org/dendrite/eduserver/cache"
"github.com/matrix-org/gomatrixserverlib"
"github.com/sirupsen/logrus"
)
// EDUServerInputAPI implements api.EDUServerInputAPI
type EDUServerInputAPI struct {
// Cache to store the current typing members in each room.
Cache *cache.EDUCache
// The kafka topic to output new typing events to.
OutputTypingEventTopic string
// The kafka topic to output new send to device events to.
OutputSendToDeviceEventTopic string
// kafka producer
Producer sarama.SyncProducer
// device database
DeviceDB devices.Database
// our server name
ServerName gomatrixserverlib.ServerName
}
// InputTypingEvent implements api.EDUServerInputAPI
func (t *EDUServerInputAPI) InputTypingEvent(
ctx context.Context,
request *api.InputTypingEventRequest,
response *api.InputTypingEventResponse,
) error {
ite := &request.InputTypingEvent
if ite.Typing {
// user is typing, update our current state of users typing.
expireTime := ite.OriginServerTS.Time().Add(
time.Duration(ite.TimeoutMS) * time.Millisecond,
)
t.Cache.AddTypingUser(ite.UserID, ite.RoomID, &expireTime)
} else {
t.Cache.RemoveUser(ite.UserID, ite.RoomID)
}
return t.sendTypingEvent(ite)
}
// InputTypingEvent implements api.EDUServerInputAPI
func (t *EDUServerInputAPI) InputSendToDeviceEvent(
ctx context.Context,
request *api.InputSendToDeviceEventRequest,
response *api.InputSendToDeviceEventResponse,
) error {
ise := &request.InputSendToDeviceEvent
return t.sendToDeviceEvent(ise)
}
func (t *EDUServerInputAPI) sendTypingEvent(ite *api.InputTypingEvent) error {
ev := &api.TypingEvent{
Type: gomatrixserverlib.MTyping,
RoomID: ite.RoomID,
UserID: ite.UserID,
Typing: ite.Typing,
}
ote := &api.OutputTypingEvent{
Event: *ev,
}
if ev.Typing {
expireTime := ite.OriginServerTS.Time().Add(
time.Duration(ite.TimeoutMS) * time.Millisecond,
)
ote.ExpireTime = &expireTime
}
eventJSON, err := json.Marshal(ote)
if err != nil {
return err
}
m := &sarama.ProducerMessage{
Topic: string(t.OutputTypingEventTopic),
Key: sarama.StringEncoder(ite.RoomID),
Value: sarama.ByteEncoder(eventJSON),
}
_, _, err = t.Producer.SendMessage(m)
return err
}
func (t *EDUServerInputAPI) sendToDeviceEvent(ise *api.InputSendToDeviceEvent) error {
devices := []string{}
localpart, domain, err := gomatrixserverlib.SplitID('@', ise.UserID)
if err != nil {
return err
}
// If the event is targeted locally then we want to expand the wildcard
// out into individual device IDs so that we can send them to each respective
// device. If the event isn't targeted locally then we can't expand the
// wildcard as we don't know about the remote devices, so instead we leave it
// as-is, so that the federation sender can send it on with the wildcard intact.
if domain == t.ServerName && ise.DeviceID == "*" {
devs, err := t.DeviceDB.GetDevicesByLocalpart(context.TODO(), localpart)
if err != nil {
return err
}
for _, dev := range devs {
devices = append(devices, dev.ID)
}
} else {
devices = append(devices, ise.DeviceID)
}
for _, device := range devices {
ote := &api.OutputSendToDeviceEvent{
UserID: ise.UserID,
DeviceID: device,
SendToDeviceEvent: ise.SendToDeviceEvent,
}
logrus.WithFields(logrus.Fields{
"user_id": ise.UserID,
"device_id": ise.DeviceID,
"event_type": ise.Type,
}).Info("handling send-to-device message")
eventJSON, err := json.Marshal(ote)
if err != nil {
logrus.WithError(err).Error("sendToDevice failed json.Marshal")
return err
}
m := &sarama.ProducerMessage{
Topic: string(t.OutputSendToDeviceEventTopic),
Key: sarama.StringEncoder(ote.UserID),
Value: sarama.ByteEncoder(eventJSON),
}
_, _, err = t.Producer.SendMessage(m)
if err != nil {
logrus.WithError(err).Error("sendToDevice failed t.Producer.SendMessage")
return err
}
}
return nil
}
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