/
checksum.go
57 lines (46 loc) · 1.25 KB
/
checksum.go
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package service
import (
"context"
"crypto/sha256"
"encoding/hex"
"fmt"
"io"
"os"
"path/filepath"
"github.com/IceWhaleTech/CasaOS-Installer/codegen"
"github.com/IceWhaleTech/CasaOS-Installer/common"
"github.com/IceWhaleTech/CasaOS-Installer/internal"
)
func DownloadChecksum(ctx context.Context, release codegen.Release, mirror string) (string, error) {
releaseDir, err := ReleaseDir(release)
if err != nil {
return "", err
}
checksumURL := internal.GetChecksumsURL(release, mirror)
return internal.Download(ctx, releaseDir, checksumURL)
}
// sha256sum
func VerifyChecksumByFilePath(filepath, checksum string) error {
file, err := os.Open(filepath)
if err != nil {
return err
}
defer file.Close()
hash := sha256.New()
if _, err := io.Copy(hash, file); err != nil {
return err
}
buf := hash.Sum(nil)[:32]
if hex.EncodeToString(buf) != checksum {
return fmt.Errorf("checksum mismatch: expected %s, got %s", checksum, hex.EncodeToString(buf))
}
return nil
}
func GetChecksums(release codegen.Release) (map[string]string, error) {
releaseDir, err := ReleaseDir(release)
if err != nil {
return nil, err
}
checksumsFilePath := filepath.Join(releaseDir, common.ChecksumsTXTFileName)
return internal.GetChecksums(checksumsFilePath)
}