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dendrite/cmd/dendrite-demo-yggdrasil/signing/fetcher.go

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// 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 signing
import (
"context"
"encoding/hex"
"fmt"
"time"
"github.com/matrix-org/gomatrixserverlib"
)
const KeyID = "ed25519:dendrite-demo-yggdrasil"
type YggdrasilKeys struct {
}
func (f *YggdrasilKeys) KeyRing() *gomatrixserverlib.KeyRing {
return &gomatrixserverlib.KeyRing{
KeyDatabase: f,
}
}
func (f *YggdrasilKeys) FetchKeys(
ctx context.Context,
requests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
) (map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult, error) {
res := make(map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult)
for req := range requests {
if req.KeyID != KeyID {
return nil, fmt.Errorf("FetchKeys: cannot fetch key with ID %s, should be %s", req.KeyID, KeyID)
}
hexkey, err := hex.DecodeString(string(req.ServerName))
if err != nil {
return nil, fmt.Errorf("FetchKeys: can't decode server name %q: %w", req.ServerName, err)
}
res[req] = gomatrixserverlib.PublicKeyLookupResult{
VerifyKey: gomatrixserverlib.VerifyKey{
Key: hexkey,
},
ExpiredTS: gomatrixserverlib.PublicKeyNotExpired,
ValidUntilTS: gomatrixserverlib.AsTimestamp(time.Now().Add(24 * time.Hour * 365)),
}
}
return res, nil
}
func (f *YggdrasilKeys) FetcherName() string {
return "YggdrasilKeys"
}
func (f *YggdrasilKeys) StoreKeys(ctx context.Context, results map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult) error {
return nil
}