package internal import ( "crypto/md5" "crypto/sha1" "crypto/sha256" "crypto/sha512" "encoding/hex" "github.com/go-git/go-billy/v5" "hash" "io" "log" "os" "path/filepath" ) func copyFromFs(from billy.Filesystem, to billy.Filesystem, path string) { read, err := from.ReadDir(path) if err != nil { log.Fatalf("could not read dir: %v", err) } for _, fi := range read { fullPath := filepath.Join(path, fi.Name()) if fi.IsDir() { _ = to.MkdirAll(fullPath, 0755) copyFromFs(from, to, fullPath) } else { _ = to.Remove(fullPath) f, err := to.OpenFile(fullPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, fi.Mode()) if err != nil { log.Fatalf("could not open file: %v", err) } oldFile, err := from.Open(fullPath) if err != nil { log.Fatalf("could not open from file: %v", err) } _, err = io.Copy(f, oldFile) if err != nil { log.Fatalf("could not copy from oldFile to new: %v", err) } } } } func ignoredContains(a []*ignoredSource, b string) bool { for _, val := range a { if val.name == b { return true } } return false } // check if content and checksum matches // returns the hash type if success else nil func CompareHash(content []byte, checksum string) hash.Hash { var hashType hash.Hash switch len(checksum) { case 128: hashType = sha512.New() break case 64: hashType = sha256.New() break case 40: hashType = sha1.New() break case 32: hashType = md5.New() break default: return nil } hashType.Reset() _, err := hashType.Write(content) if err != nil { return nil } calculated := hex.EncodeToString(hashType.Sum(nil)) if calculated != checksum { log.Printf("wanted checksum %s, but got %s", checksum, calculated) return nil } return hashType }