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main
expr/secmark.go
64 строки
2 KB
turekt
Add secmark obj support (#274)
09 сен 2024, 23:56
Не верифицирован
09 сен 2024, 23:56
aca62a1
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// Copyright 2024 Google LLC. All Rights Reserved. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package expr import ( "encoding/binary" "github.com/mdlayher/netlink" "golang.org/x/sys/unix" ) // From https://git.netfilter.org/libnftnl/tree/include/linux/netfilter/nf_tables.h?id=be0bae0ad31b0adb506f96de083f52a2bd0d4fbf#n1338 const ( NFTA_SECMARK_CTX = 0x01 ) type SecMark struct { Ctx string } func (e *SecMark) marshal(fam byte) ([]byte, error) { data, err := e.marshalData(fam) if err != nil { return nil, err } return netlink.MarshalAttributes([]netlink.Attribute{ {Type: unix.NFTA_EXPR_NAME, Data: []byte("secmark\x00")}, {Type: unix.NLA_F_NESTED | unix.NFTA_EXPR_DATA, Data: data}, }) } func (e *SecMark) marshalData(fam byte) ([]byte, error) { attrs := []netlink.Attribute{ {Type: NFTA_SECMARK_CTX, Data: []byte(e.Ctx)}, } return netlink.MarshalAttributes(attrs) } func (e *SecMark) unmarshal(fam byte, data []byte) error { ad, err := netlink.NewAttributeDecoder(data) if err != nil { return err } ad.ByteOrder = binary.BigEndian for ad.Next() { switch ad.Type() { case NFTA_SECMARK_CTX: e.Ctx = ad.String() } } return ad.Err() }