package object import ( "encoding/hex" "fmt" "strings" internalclient "github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/client" "github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/common" "github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/commonflags" "github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/key" "github.com/nspcc-dev/neofs-sdk-go/checksum" cid "github.com/nspcc-dev/neofs-sdk-go/container/id" oid "github.com/nspcc-dev/neofs-sdk-go/object/id" "github.com/spf13/cobra" ) const getRangeHashSaltFlag = "salt" const ( hashSha256 = "sha256" hashTz = "tz" rangeSep = ":" ) var objectHashCmd = &cobra.Command{ Use: "hash", Short: "Get object hash", Long: "Get object hash", Run: getObjectHash, } func initObjectHashCmd() { commonflags.Init(objectHashCmd) initFlagSession(objectHeadCmd, "RANGEHASH") flags := objectHashCmd.Flags() flags.String(commonflags.CIDFlag, "", commonflags.CIDFlagUsage) _ = objectHashCmd.MarkFlagRequired(commonflags.CIDFlag) flags.String(commonflags.OIDFlag, "", commonflags.OIDFlagUsage) _ = objectHashCmd.MarkFlagRequired(commonflags.OIDFlag) flags.String("range", "", "Range to take hash from in the form offset1:length1,...") flags.String("type", hashSha256, "Hash type. Either 'sha256' or 'tz'") flags.String(getRangeHashSaltFlag, "", "Salt in hex format") } func getObjectHash(cmd *cobra.Command, _ []string) { var cnr cid.ID var obj oid.ID objAddr := readObjectAddress(cmd, &cnr, &obj) ranges, err := getRangeList(cmd) common.ExitOnErr(cmd, "", err) typ, err := getHashType(cmd) common.ExitOnErr(cmd, "", err) strSalt := strings.TrimPrefix(cmd.Flag(getRangeHashSaltFlag).Value.String(), "0x") salt, err := hex.DecodeString(strSalt) common.ExitOnErr(cmd, "could not decode salt: %w", err) pk := key.GetOrGenerate(cmd) tz := typ == hashTz fullHash := len(ranges) == 0 if fullHash { var headPrm internalclient.HeadObjectPrm Prepare(cmd, &headPrm) headPrm.SetAddress(objAddr) // get hash of full payload through HEAD (may be user can do it through dedicated command?) res, err := internalclient.HeadObject(headPrm) common.ExitOnErr(cmd, "rpc error: %w", err) var cs checksum.Checksum var csSet bool if tz { cs, csSet = res.Header().PayloadHomomorphicHash() } else { cs, csSet = res.Header().PayloadChecksum() } if csSet { cmd.Println(hex.EncodeToString(cs.Value())) } else { cmd.Println("Missing checksum in object header.") } return } cli := internalclient.GetSDKClientByFlag(cmd, pk, commonflags.RPC) var hashPrm internalclient.HashPayloadRangesPrm hashPrm.SetClient(cli) Prepare(cmd, &hashPrm) readSession(cmd, &hashPrm, pk, cnr, obj) hashPrm.SetAddress(objAddr) hashPrm.SetSalt(salt) hashPrm.SetRanges(ranges) if tz { hashPrm.TZ() } res, err := internalclient.HashPayloadRanges(hashPrm) common.ExitOnErr(cmd, "rpc error: %w", err) hs := res.HashList() for i := range hs { cmd.Printf("Offset=%d (Length=%d)\t: %s\n", ranges[i].GetOffset(), ranges[i].GetLength(), hex.EncodeToString(hs[i])) } } func getHashType(cmd *cobra.Command) (string, error) { rawType := cmd.Flag("type").Value.String() switch typ := strings.ToLower(rawType); typ { case hashSha256, hashTz: return typ, nil default: return "", fmt.Errorf("invalid hash type: %s", typ) } }