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//
// Copyright 2021 The Sigstore Authors.
//
// 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 filesystem
import (
"context"
"os"
"github.com/sigstore/cosign/v2/pkg/providers"
)
func init() {
providers.Register("filesystem", &filesystem{})
}
type filesystem struct{}
var _ providers.Interface = (*filesystem)(nil)
const (
// FilesystemTokenPath is the path to where we read an OIDC
// token from the filesystem.
// nolint
FilesystemTokenPath = "/var/run/sigstore/cosign/oidc-token"
)
// Enabled implements providers.Interface
func (ga *filesystem) Enabled(_ context.Context) bool {
// If we can stat the file without error then this is enabled.
_, err := os.Stat(FilesystemTokenPath)
return err == nil
}
// Provide implements providers.Interface
func (ga *filesystem) Provide(ctx context.Context, audience string) (string, error) { //nolint: revive
b, err := os.ReadFile(FilesystemTokenPath)
if err != nil {
return "", err
}
return string(b), nil
}
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