Update dependencies

2024-11-01 17:33:34 +00:00
parent 033ac0b400
commit 5cdfab398d
3596 changed files with 1033483 additions and 259 deletions
--- a/vendor/github.com/google/nftables/expr/exthdr.go
+++ b/vendor/github.com/google/nftables/expr/exthdr.go
@@ -0,0 +1,102 @@
+// Copyright 2018 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/google/nftables/binaryutil"
+	"github.com/mdlayher/netlink"
+	"golang.org/x/sys/unix"
+)
+
+type ExthdrOp uint32
+
+const (
+	ExthdrOpIpv6   ExthdrOp = unix.NFT_EXTHDR_OP_IPV6
+	ExthdrOpTcpopt ExthdrOp = unix.NFT_EXTHDR_OP_TCPOPT
+)
+
+type Exthdr struct {
+	DestRegister   uint32
+	Type           uint8
+	Offset         uint32
+	Len            uint32
+	Flags          uint32
+	Op             ExthdrOp
+	SourceRegister uint32
+}
+
+func (e *Exthdr) marshal(fam byte) ([]byte, error) {
+	var attr []netlink.Attribute
+
+	// Operations are differentiated by the Op and whether the SourceRegister
+	// or DestRegister is set. Mixing them results in EOPNOTSUPP.
+	if e.SourceRegister != 0 {
+		attr = []netlink.Attribute{
+			{Type: unix.NFTA_EXTHDR_SREG, Data: binaryutil.BigEndian.PutUint32(e.SourceRegister)}}
+	} else {
+		attr = []netlink.Attribute{
+			{Type: unix.NFTA_EXTHDR_DREG, Data: binaryutil.BigEndian.PutUint32(e.DestRegister)}}
+	}
+
+	attr = append(attr,
+		netlink.Attribute{Type: unix.NFTA_EXTHDR_TYPE, Data: []byte{e.Type}},
+		netlink.Attribute{Type: unix.NFTA_EXTHDR_OFFSET, Data: binaryutil.BigEndian.PutUint32(e.Offset)},
+		netlink.Attribute{Type: unix.NFTA_EXTHDR_LEN, Data: binaryutil.BigEndian.PutUint32(e.Len)},
+		netlink.Attribute{Type: unix.NFTA_EXTHDR_OP, Data: binaryutil.BigEndian.PutUint32(uint32(e.Op))})
+
+	// Flags is only set if DREG is set
+	if e.DestRegister != 0 {
+		attr = append(attr,
+			netlink.Attribute{Type: unix.NFTA_EXTHDR_FLAGS, Data: binaryutil.BigEndian.PutUint32(e.Flags)})
+	}
+
+	data, err := netlink.MarshalAttributes(attr)
+	if err != nil {
+		return nil, err
+	}
+	return netlink.MarshalAttributes([]netlink.Attribute{
+		{Type: unix.NFTA_EXPR_NAME, Data: []byte("exthdr\x00")},
+		{Type: unix.NLA_F_NESTED | unix.NFTA_EXPR_DATA, Data: data},
+	})
+}
+
+func (e *Exthdr) 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 unix.NFTA_EXTHDR_DREG:
+			e.DestRegister = ad.Uint32()
+		case unix.NFTA_EXTHDR_TYPE:
+			e.Type = ad.Uint8()
+		case unix.NFTA_EXTHDR_OFFSET:
+			e.Offset = ad.Uint32()
+		case unix.NFTA_EXTHDR_LEN:
+			e.Len = ad.Uint32()
+		case unix.NFTA_EXTHDR_FLAGS:
+			e.Flags = ad.Uint32()
+		case unix.NFTA_EXTHDR_OP:
+			e.Op = ExthdrOp(ad.Uint32())
+		case unix.NFTA_EXTHDR_SREG:
+			e.SourceRegister = ad.Uint32()
+		}
+	}
+	return ad.Err()
+}