From e9c534b0a045b0f1ef034f3c7deed8be2f3f703f Mon Sep 17 00:00:00 2001
From: Pavel Karpy <carpawell@nspcc.ru>
Date: Fri, 29 Apr 2022 20:59:14 +0300
Subject: [PATCH] [#1365] ir: Check homomorphic hash flexibly in audit

Do not perform that check if it was turned off for the container being
checked.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
---
 pkg/services/audit/auditor/por.go | 31 +++++++++++++++++++------------
 1 file changed, 19 insertions(+), 12 deletions(-)

diff --git a/pkg/services/audit/auditor/por.go b/pkg/services/audit/auditor/por.go
index d07fd0aef..be7d3b87e 100644
--- a/pkg/services/audit/auditor/por.go
+++ b/pkg/services/audit/auditor/por.go
@@ -7,6 +7,7 @@ import (
 
 	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
 	"github.com/nspcc-dev/neofs-node/pkg/util/rand"
+	containerSDK "github.com/nspcc-dev/neofs-sdk-go/container"
 	oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
 	storagegroupSDK "github.com/nspcc-dev/neofs-sdk-go/storagegroup"
 	"github.com/nspcc-dev/tzhash/tz"
@@ -50,6 +51,8 @@ func (c *Context) checkStorageGroupPoR(sgID oid.ID, sg storagegroupSDK.StorageGr
 	getHeaderPrm.CID = c.task.ContainerID()
 	getHeaderPrm.NodeIsRelay = true
 
+	homomorphicHashingEnabled := !containerSDK.IsHomomorphicHashingDisabled(c.task.ContainerStructure())
+
 	for i := range members {
 		objectPlacement, err := c.buildPlacement(members[i])
 		if err != nil {
@@ -90,18 +93,22 @@ func (c *Context) checkStorageGroupPoR(sgID oid.ID, sg storagegroupSDK.StorageGr
 			// update cache for PoR and PDP audit checks
 			c.updateHeadResponses(hdr)
 
-			cs, _ := hdr.PayloadHomomorphicHash()
+			if homomorphicHashingEnabled {
+				cs, _ := hdr.PayloadHomomorphicHash()
+				if len(tzHash) == 0 {
+					tzHash = cs.Value()
+				} else {
+					tzHash, err = tz.Concat([][]byte{
+						tzHash,
+						cs.Value(),
+					})
+					if err != nil {
+						c.log.Debug("can't concatenate tz hash",
+							zap.String("oid", members[i].String()),
+							zap.String("error", err.Error()))
 
-			if len(tzHash) == 0 {
-				tzHash = cs.Value()
-			} else {
-				tzHash, err = tz.Concat([][]byte{tzHash, cs.Value()})
-				if err != nil {
-					c.log.Debug("can't concatenate tz hash",
-						zap.Stringer("oid", members[i]),
-						zap.String("error", err.Error()))
-
-					break
+						break
+					}
 				}
 			}
 
@@ -116,7 +123,7 @@ func (c *Context) checkStorageGroupPoR(sgID oid.ID, sg storagegroupSDK.StorageGr
 
 	sizeCheck := sg.ValidationDataSize() == totalSize
 	cs, _ := sg.ValidationDataHash()
-	tzCheck := bytes.Equal(tzHash, cs.Value())
+	tzCheck := !homomorphicHashingEnabled || bytes.Equal(tzHash, cs.Value())
 
 	if sizeCheck && tzCheck {
 		c.report.PassedPoR(sgID) // write report