60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
package putsvc
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/sha256"
|
|
"fmt"
|
|
"hash"
|
|
|
|
"github.com/nspcc-dev/neofs-api-go/pkg"
|
|
"github.com/nspcc-dev/neofs-node/pkg/core/object"
|
|
"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/transformer"
|
|
"github.com/nspcc-dev/tzhash/tz"
|
|
)
|
|
|
|
type validatingTarget struct {
|
|
nextTarget transformer.ObjectTarget
|
|
|
|
fmt *object.FormatValidator
|
|
|
|
hash hash.Hash
|
|
|
|
checksum []byte
|
|
}
|
|
|
|
func (t *validatingTarget) WriteHeader(obj *object.RawObject) error {
|
|
cs := obj.PayloadChecksum()
|
|
switch typ := cs.Type(); typ {
|
|
default:
|
|
return fmt.Errorf("(%T) unsupported payload checksum type %v", t, typ)
|
|
case pkg.ChecksumSHA256:
|
|
t.hash = sha256.New()
|
|
case pkg.ChecksumTZ:
|
|
t.hash = tz.New()
|
|
}
|
|
|
|
t.checksum = cs.Sum()
|
|
|
|
if err := t.fmt.Validate(obj.Object()); err != nil {
|
|
return fmt.Errorf("(%T) coult not validate object format: %w", t, err)
|
|
}
|
|
|
|
return t.nextTarget.WriteHeader(obj)
|
|
}
|
|
|
|
func (t *validatingTarget) Write(p []byte) (n int, err error) {
|
|
n, err = t.hash.Write(p)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
return t.nextTarget.Write(p)
|
|
}
|
|
|
|
func (t *validatingTarget) Close() (*transformer.AccessIdentifiers, error) {
|
|
if !bytes.Equal(t.hash.Sum(nil), t.checksum) {
|
|
return nil, fmt.Errorf("(%T) incorrect payload checksum", t)
|
|
}
|
|
|
|
return t.nextTarget.Close()
|
|
}
|