dendrite/federationapi/routing/keys.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 (
"encoding/json"
"net/http"
"time"
"github.com/matrix-org/dendrite/common/config"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
"golang.org/x/crypto/ed25519"
)
// LocalKeys returns the local keys for the server.
// See https://matrix.org/docs/spec/server_server/unstable.html#publishing-keys
func LocalKeys(cfg config.Dendrite) util.JSONResponse {
keys, err := localKeys(cfg, time.Now().Add(cfg.Matrix.KeyValidityPeriod))
if err != nil {
return util.ErrorResponse(err)
}
return util.JSONResponse{Code: http.StatusOK, JSON: keys}
}
func localKeys(cfg config.Dendrite, validUntil time.Time) (*gomatrixserverlib.ServerKeys, error) {
var keys gomatrixserverlib.ServerKeys
keys.ServerName = cfg.Matrix.ServerName
publicKey := cfg.Matrix.PrivateKey.Public().(ed25519.PublicKey)
keys.VerifyKeys = map[gomatrixserverlib.KeyID]gomatrixserverlib.VerifyKey{
cfg.Matrix.KeyID: {
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Key: gomatrixserverlib.Base64String(publicKey),
},
}
keys.TLSFingerprints = cfg.Matrix.TLSFingerPrints
keys.OldVerifyKeys = map[gomatrixserverlib.KeyID]gomatrixserverlib.OldVerifyKey{}
keys.ValidUntilTS = gomatrixserverlib.AsTimestamp(validUntil)
toSign, err := json.Marshal(keys.ServerKeyFields)
if err != nil {
return nil, err
}
keys.Raw, err = gomatrixserverlib.SignJSON(
string(cfg.Matrix.ServerName), cfg.Matrix.KeyID, cfg.Matrix.PrivateKey, toSign,
)
if err != nil {
return nil, err
}
return &keys, nil
}