frostfs-node/cmd/neofs-cli/modules/object/hash.go

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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)
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)
}
}