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index.go
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index.go
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// Copyright 2019, 2020 Weald Technology Trading
// 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 vaultstorage
import (
"context"
b64 "encoding/base64"
"github.com/google/uuid"
"github.com/pkg/errors"
)
type WalletIndexSecret struct {
data []byte
}
// StoreAccountsIndex stores the account index.
func (s *Store) StoreAccountsIndex(walletID uuid.UUID, data []byte) error {
var err error
// Do not encrypt empty index.
if len(data) != 2 {
data, err = s.encryptIfRequired(data)
if err != nil {
return err
}
}
path := s.walletIndexPath(walletID)
sEnc := b64.URLEncoding.EncodeToString(data)
s.client.KVv2(s.vault_secrets_mount_path).Put(context.Background(), path, map[string]interface{}{
"data": sEnc,
})
if err != nil {
return errors.Wrap(err, "failed to store wallet index")
}
return nil
}
// RetrieveAccountsIndex retrieves the account index.
func (s *Store) RetrieveAccountsIndex(walletID uuid.UUID) ([]byte, error) {
path := s.walletIndexPath(walletID)
secret, err := s.client.KVv2(s.vault_secrets_mount_path).Get(context.Background(), path)
if err != nil {
return nil, err
}
returnedData, _ := secret.Data["data"].(string)
sDec, _ := b64.URLEncoding.DecodeString(returnedData)
// Do not decrypt empty index.
if len(sDec) == 2 {
return sDec, nil
}
data, err := s.decryptIfRequired(sDec)
if err != nil {
return nil, err
}
return data, nil
}