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dendrite/keyserver/api/api.go
Kegsay 0c4e8f6d4f
Send device list updates to servers (outbound only) (#1237)
* Add QueryDeviceMessages to serve up device keys and stream IDs

* Consume key change events in fedsender

Don't yet send them to destinations as we haven't worked them out yet

* Send device list updates to all required servers

* Glue it all together
2020-08-04 11:32:14 +01:00

202 lines
6.3 KiB
Go

// Copyright 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 api
import (
"context"
"encoding/json"
"strings"
"time"
userapi "github.com/matrix-org/dendrite/userapi/api"
)
type KeyInternalAPI interface {
// SetUserAPI assigns a user API to query when extracting device names.
SetUserAPI(i userapi.UserInternalAPI)
PerformUploadKeys(ctx context.Context, req *PerformUploadKeysRequest, res *PerformUploadKeysResponse)
// PerformClaimKeys claims one-time keys for use in pre-key messages
PerformClaimKeys(ctx context.Context, req *PerformClaimKeysRequest, res *PerformClaimKeysResponse)
QueryKeys(ctx context.Context, req *QueryKeysRequest, res *QueryKeysResponse)
QueryKeyChanges(ctx context.Context, req *QueryKeyChangesRequest, res *QueryKeyChangesResponse)
QueryOneTimeKeys(ctx context.Context, req *QueryOneTimeKeysRequest, res *QueryOneTimeKeysResponse)
QueryDeviceMessages(ctx context.Context, req *QueryDeviceMessagesRequest, res *QueryDeviceMessagesResponse)
}
// KeyError is returned if there was a problem performing/querying the server
type KeyError struct {
Err string
}
func (k *KeyError) Error() string {
return k.Err
}
// DeviceMessage represents the message produced into Kafka by the key server.
type DeviceMessage struct {
DeviceKeys
// A monotonically increasing number which represents device changes for this user.
StreamID int
}
// DeviceKeys represents a set of device keys for a single device
// https://matrix.org/docs/spec/client_server/r0.6.1#post-matrix-client-r0-keys-upload
type DeviceKeys struct {
// The user who owns this device
UserID string
// The device ID of this device
DeviceID string
// The device display name
DisplayName string
// The raw device key JSON
KeyJSON []byte
}
// WithStreamID returns a copy of this device message with the given stream ID
func (k *DeviceKeys) WithStreamID(streamID int) DeviceMessage {
return DeviceMessage{
DeviceKeys: *k,
StreamID: streamID,
}
}
// OneTimeKeys represents a set of one-time keys for a single device
// https://matrix.org/docs/spec/client_server/r0.6.1#post-matrix-client-r0-keys-upload
type OneTimeKeys struct {
// The user who owns this device
UserID string
// The device ID of this device
DeviceID string
// A map of algorithm:key_id => key JSON
KeyJSON map[string]json.RawMessage
}
// Split a key in KeyJSON into algorithm and key ID
func (k *OneTimeKeys) Split(keyIDWithAlgo string) (algo string, keyID string) {
segments := strings.Split(keyIDWithAlgo, ":")
return segments[0], segments[1]
}
// OneTimeKeysCount represents the counts of one-time keys for a single device
type OneTimeKeysCount struct {
// The user who owns this device
UserID string
// The device ID of this device
DeviceID string
// algorithm to count e.g:
// {
// "curve25519": 10,
// "signed_curve25519": 20
// }
KeyCount map[string]int
}
// PerformUploadKeysRequest is the request to PerformUploadKeys
type PerformUploadKeysRequest struct {
DeviceKeys []DeviceKeys
OneTimeKeys []OneTimeKeys
}
// PerformUploadKeysResponse is the response to PerformUploadKeys
type PerformUploadKeysResponse struct {
// A fatal error when processing e.g database failures
Error *KeyError
// A map of user_id -> device_id -> Error for tracking failures.
KeyErrors map[string]map[string]*KeyError
OneTimeKeyCounts []OneTimeKeysCount
}
// KeyError sets a key error field on KeyErrors
func (r *PerformUploadKeysResponse) KeyError(userID, deviceID string, err *KeyError) {
if r.KeyErrors[userID] == nil {
r.KeyErrors[userID] = make(map[string]*KeyError)
}
r.KeyErrors[userID][deviceID] = err
}
type PerformClaimKeysRequest struct {
// Map of user_id to device_id to algorithm name
OneTimeKeys map[string]map[string]string
Timeout time.Duration
}
type PerformClaimKeysResponse struct {
// Map of user_id to device_id to algorithm:key_id to key JSON
OneTimeKeys map[string]map[string]map[string]json.RawMessage
// Map of remote server domain to error JSON
Failures map[string]interface{}
// Set if there was a fatal error processing this action
Error *KeyError
}
type QueryKeysRequest struct {
// Maps user IDs to a list of devices
UserToDevices map[string][]string
Timeout time.Duration
}
type QueryKeysResponse struct {
// Map of remote server domain to error JSON
Failures map[string]interface{}
// Map of user_id to device_id to device_key
DeviceKeys map[string]map[string]json.RawMessage
// Set if there was a fatal error processing this query
Error *KeyError
}
type QueryKeyChangesRequest struct {
// The partition which had key events sent to
Partition int32
// The offset of the last received key event, or sarama.OffsetOldest if this is from the beginning
Offset int64
// The inclusive offset where to track key changes up to. Messages with this offset are included in the response.
// Use sarama.OffsetNewest if the offset is unknown (then check the response Offset to avoid racing).
ToOffset int64
}
type QueryKeyChangesResponse struct {
// The set of users who have had their keys change.
UserIDs []string
// The partition being served - useful if the partition is unknown at request time
Partition int32
// The latest offset represented in this response.
Offset int64
// Set if there was a problem handling the request.
Error *KeyError
}
type QueryOneTimeKeysRequest struct {
// The local user to query OTK counts for
UserID string
// The device to query OTK counts for
DeviceID string
}
type QueryOneTimeKeysResponse struct {
// OTK key counts, in the extended /sync form described by https://matrix.org/docs/spec/client_server/r0.6.1#id84
Count OneTimeKeysCount
Error *KeyError
}
type QueryDeviceMessagesRequest struct {
UserID string
}
type QueryDeviceMessagesResponse struct {
// The latest stream ID
StreamID int
Devices []DeviceMessage
Error *KeyError
}