/
idb.go
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/
idb.go
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// Copyright 2022, 2023 Chainguard, Inc.
//
// 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 idb
import (
"fmt"
"path/filepath"
apkfs "github.com/chainguard-dev/go-apk/pkg/fs"
"chainguard.dev/apko/pkg/sbom/options"
)
// IDB treats the APK installed DB as an SBOM, which can be used with
// `apk audit` to check an image for runtime deviations.
type IDB struct {
fs apkfs.FullFS
}
func New(fs apkfs.FullFS) IDB {
return IDB{fs}
}
func (i *IDB) Key() string {
return "idb"
}
func (i *IDB) Ext() string {
return "idb"
}
// Generate copies the IDB from the work directory and saves it as
// an SBOM.
func (i *IDB) Generate(opts *options.Options, path string) error {
idbPath := filepath.Join("lib", "apk", "db", "installed")
idbData, err := i.fs.ReadFile(idbPath)
if err != nil {
return fmt.Errorf("reading installed db for copying: %w", err)
}
if err := i.fs.WriteFile(path, idbData, 0o600); err != nil {
return fmt.Errorf("copying installed db: %w", err)
}
return nil
}
func (i *IDB) GenerateIndex(opts *options.Options, path string) error {
return nil
}