/
identity.go
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/
identity.go
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// Copyright (C) 2022 Shanhu Tech Inc.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU Affero General Public License as published by the
// Free Software Foundation, either version 3 of the License, or (at your
// option) any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
// for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package doorway
import (
"context"
"io/ioutil"
)
// Identity provides an identity for dialing fabrics.
type Identity interface {
// Load loads the identity private key. Returns errcode.NotFound error
// if key is not yet provisioned.
Load(ctx context.Context) ([]byte, error)
}
type staticIdentity struct {
pri []byte
}
func newStaticIdentity(bs []byte) *staticIdentity {
return &staticIdentity{bs}
}
func newFileIdentity(f string) (*staticIdentity, error) {
bs, err := ioutil.ReadFile(f)
if err != nil {
return nil, err
}
return newStaticIdentity(bs), nil
}
func (s *staticIdentity) Load(ctx context.Context) ([]byte, error) {
cp := make([]byte, len(s.pri))
copy(cp, s.pri)
return cp, nil
}
// NewFileIdentity loads a private key from a file.
func NewFileIdentity(f string) (Identity, error) {
id, err := newFileIdentity(f)
if err != nil {
return nil, err
}
return id, nil
}