[#217] Consider Copy-Source-SSE-* headers during copy

Signed-off-by: Marina Biryukova <m.biryukova@yadro.com>

api/layer/layer.go

@@ -160,11 +160,12 @@ type (
 		ScrBktInfo    *data.BucketInfo
 		DstBktInfo    *data.BucketInfo
 		DstObject     string
-		SrcSize       uint64
+		DstSize       uint64
 		Header        map[string]string
 		Range         *RangeParams
 		Lock          *data.ObjectLock
-		Encryption    encryption.Params
+		SrcEncryption encryption.Params
+		DstEncryption encryption.Params
 		CopiesNumbers []uint32
 	}
 	// CreateBucketParams stores bucket create request parameters.
@@ -291,6 +292,13 @@ const (
 	AttributeFrostfsCopiesNumber = "frostfs-copies-number" // such format to match X-Amz-Meta-Frostfs-Copies-Number header
 )
 
+var EncryptionMetadata = map[string]struct{}{
+	AttributeEncryptionAlgorithm: {},
+	AttributeDecryptedSize:       {},
+	AttributeHMACSalt:            {},
+	AttributeHMACKey:             {},
+}
+
 func (t *VersionedObject) String() string {
 	return t.Name + ":" + t.VersionID
 }
@@ -583,7 +591,7 @@ func (n *layer) CopyObject(ctx context.Context, p *CopyObjectParams) (*data.Exte
 		Versioned:  p.SrcVersioned,
 		Range:      p.Range,
 		BucketInfo: p.ScrBktInfo,
-		Encryption: p.Encryption,
+		Encryption: p.SrcEncryption,
 	})
 	if err != nil {
 		return nil, fmt.Errorf("get object to copy: %w", err)
@@ -592,10 +600,10 @@ func (n *layer) CopyObject(ctx context.Context, p *CopyObjectParams) (*data.Exte
 	return n.PutObject(ctx, &PutObjectParams{
 		BktInfo:       p.DstBktInfo,
 		Object:        p.DstObject,
-		Size:          p.SrcSize,
+		Size:          p.DstSize,
 		Reader:        objPayload,
 		Header:        p.Header,
-		Encryption:    p.Encryption,
+		Encryption:    p.DstEncryption,
 		CopiesNumbers: p.CopiesNumbers,
 	})
 }