[#1618] node: Use OID/CID from the request in eACL checks

Also, try to fetch object header info from the local storage to find as much
object info as possible for the requests which do not assume returning
object header as a response.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

CHANGELOG.md

@@ -17,6 +17,8 @@ Changelog for NeoFS Node
 
 ### Fixed
 
+- Losing request context in eACL response checks (#1595)
+
 ### Removed
 
 ### Updated

pkg/services/object/acl/eacl/v2/headers.go

@@ -114,16 +114,10 @@ func (h *cfg) readObjectHeaders(dst *headerSource) error {
 				return errMissingOID
 			}
 
-			var addr oid.Address
+			objHeaders, completed := h.localObjectHeaders(h.cnr, h.obj)
-			addr.SetContainer(h.cnr)
-			addr.SetObject(*h.obj)
 
-			obj, err := h.storage.Head(addr)
+			dst.objectHeaders = objHeaders
-			if err == nil {
+			dst.incompleteObjectHeaders = !completed
-				dst.objectHeaders = headersFromObject(obj, h.cnr, h.obj)
-			} else {
-				dst.incompleteObjectHeaders = true
-			}
 		case
 			*objectV2.GetRangeRequest,
 			*objectV2.GetRangeHashRequest,
@@ -155,6 +149,11 @@ func (h *cfg) readObjectHeaders(dst *headerSource) error {
 		}
 	case responseXHeaderSource:
 		switch resp := m.resp.(type) {
+		default:
+			objectHeaders, completed := h.localObjectHeaders(h.cnr, h.obj)
+
+			dst.objectHeaders = objectHeaders
+			dst.incompleteObjectHeaders = !completed
 		case *objectV2.GetResponse:
 			if v, ok := resp.GetBody().GetObjectPart().(*objectV2.GetObjectPartInit); ok {
 				oV2 := new(objectV2.Object)
@@ -194,6 +193,21 @@ func (h *cfg) readObjectHeaders(dst *headerSource) error {
 	return nil
 }
 
+func (h *cfg) localObjectHeaders(cnr cid.ID, idObj *oid.ID) ([]eaclSDK.Header, bool) {
+	if idObj != nil {
+		var addr oid.Address
+		addr.SetContainer(cnr)
+		addr.SetObject(*idObj)
+
+		obj, err := h.storage.Head(addr)
+		if err == nil {
+			return headersFromObject(obj, cnr, idObj), true
+		}
+	}
+
+	return addressHeaders(cnr, idObj), false
+}
+
 func cidHeader(idCnr cid.ID) sysObjHdr {
 	return sysObjHdr{
 		k: acl.FilterObjectContainerID,