113 lines
3.6 KiB
Go
113 lines
3.6 KiB
Go
// Copyright 2021 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package consumers
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import (
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"context"
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"encoding/json"
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"github.com/matrix-org/dendrite/internal"
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"github.com/matrix-org/dendrite/keyserver/api"
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"github.com/matrix-org/dendrite/keyserver/storage"
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"github.com/matrix-org/dendrite/setup/config"
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"github.com/matrix-org/dendrite/setup/process"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/sirupsen/logrus"
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"github.com/Shopify/sarama"
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)
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type OutputCrossSigningKeyUpdateConsumer struct {
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eduServerConsumer *internal.ContinualConsumer
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keyDB storage.Database
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keyAPI api.KeyInternalAPI
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serverName string
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}
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func NewOutputCrossSigningKeyUpdateConsumer(
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process *process.ProcessContext,
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cfg *config.Dendrite,
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kafkaConsumer sarama.Consumer,
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keyDB storage.Database,
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keyAPI api.KeyInternalAPI,
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) *OutputCrossSigningKeyUpdateConsumer {
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// The keyserver both produces and consumes on the TopicOutputKeyChangeEvent
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// topic. We will only produce events where the UserID matches our server name,
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// and we will only consume events where the UserID does NOT match our server
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// name (because the update came from a remote server).
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consumer := internal.ContinualConsumer{
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Process: process,
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ComponentName: "keyserver/keyserver",
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Topic: cfg.Global.Kafka.TopicFor(config.TopicOutputKeyChangeEvent),
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Consumer: kafkaConsumer,
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PartitionStore: keyDB,
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}
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s := &OutputCrossSigningKeyUpdateConsumer{
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eduServerConsumer: &consumer,
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keyDB: keyDB,
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keyAPI: keyAPI,
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serverName: string(cfg.Global.ServerName),
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}
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consumer.ProcessMessage = s.onMessage
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return s
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}
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func (s *OutputCrossSigningKeyUpdateConsumer) Start() error {
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return s.eduServerConsumer.Start()
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}
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// onMessage is called in response to a message received on the
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// key change events topic from the key server.
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func (t *OutputCrossSigningKeyUpdateConsumer) onMessage(msg *sarama.ConsumerMessage) error {
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var m api.DeviceMessage
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if err := json.Unmarshal(msg.Value, &m); err != nil {
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logrus.WithError(err).Errorf("failed to read device message from key change topic")
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return nil
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}
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switch m.Type {
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case api.TypeCrossSigningUpdate:
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return t.onCrossSigningMessage(m)
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default:
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return nil
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}
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}
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func (s *OutputCrossSigningKeyUpdateConsumer) onCrossSigningMessage(m api.DeviceMessage) error {
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output := m.CrossSigningKeyUpdate
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_, host, err := gomatrixserverlib.SplitID('@', output.UserID)
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if err != nil {
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logrus.WithError(err).Errorf("eduserver output log: user ID parse failure")
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return nil
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}
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if host == gomatrixserverlib.ServerName(s.serverName) {
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// Ignore any messages that contain information about our own users, as
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// they already originated from this server.
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return nil
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}
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uploadReq := &api.PerformUploadDeviceKeysRequest{
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UserID: output.UserID,
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}
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if output.MasterKey != nil {
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uploadReq.MasterKey = *output.MasterKey
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}
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if output.SelfSigningKey != nil {
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uploadReq.SelfSigningKey = *output.SelfSigningKey
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}
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uploadRes := &api.PerformUploadDeviceKeysResponse{}
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s.keyAPI.PerformUploadDeviceKeys(context.TODO(), uploadReq, uploadRes)
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return uploadRes.Error
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}
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