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/dynset.go
+++ b/vendor/github.com/google/nftables/expr/dynset.go
@@ -0,0 +1,149 @@
+// Copyright 2020 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"
+	"time"
+
+	"github.com/google/nftables/binaryutil"
+	"github.com/google/nftables/internal/parseexprfunc"
+	"github.com/mdlayher/netlink"
+	"golang.org/x/sys/unix"
+)
+
+// Not yet supported by unix package
+// https://cs.opensource.google/go/x/sys/+/c6bc011c:unix/ztypes_linux.go;l=2027-2036
+const (
+	NFTA_DYNSET_EXPRESSIONS = 0xa
+	NFT_DYNSET_F_EXPR       = (1 << 1)
+)
+
+// Dynset represent a rule dynamically adding or updating a set or a map based on an incoming packet.
+type Dynset struct {
+	SrcRegKey  uint32
+	SrcRegData uint32
+	SetID      uint32
+	SetName    string
+	Operation  uint32
+	Timeout    time.Duration
+	Invert     bool
+	Exprs      []Any
+}
+
+func (e *Dynset) marshal(fam byte) ([]byte, error) {
+	// See: https://git.netfilter.org/libnftnl/tree/src/expr/dynset.c
+	var opAttrs []netlink.Attribute
+	opAttrs = append(opAttrs, netlink.Attribute{Type: unix.NFTA_DYNSET_SREG_KEY, Data: binaryutil.BigEndian.PutUint32(e.SrcRegKey)})
+	if e.SrcRegData != 0 {
+		opAttrs = append(opAttrs, netlink.Attribute{Type: unix.NFTA_DYNSET_SREG_DATA, Data: binaryutil.BigEndian.PutUint32(e.SrcRegData)})
+	}
+	opAttrs = append(opAttrs, netlink.Attribute{Type: unix.NFTA_DYNSET_OP, Data: binaryutil.BigEndian.PutUint32(e.Operation)})
+	if e.Timeout != 0 {
+		opAttrs = append(opAttrs, netlink.Attribute{Type: unix.NFTA_DYNSET_TIMEOUT, Data: binaryutil.BigEndian.PutUint64(uint64(e.Timeout.Milliseconds()))})
+	}
+	var flags uint32
+	if e.Invert {
+		flags |= unix.NFT_DYNSET_F_INV
+	}
+
+	opAttrs = append(opAttrs,
+		netlink.Attribute{Type: unix.NFTA_DYNSET_SET_NAME, Data: []byte(e.SetName + "\x00")},
+		netlink.Attribute{Type: unix.NFTA_DYNSET_SET_ID, Data: binaryutil.BigEndian.PutUint32(e.SetID)})
+
+	// Per https://git.netfilter.org/libnftnl/tree/src/expr/dynset.c?id=84d12cfacf8ddd857a09435f3d982ab6250d250c#n170
+	if len(e.Exprs) > 0 {
+		flags |= NFT_DYNSET_F_EXPR
+		switch len(e.Exprs) {
+		case 1:
+			exprData, err := Marshal(fam, e.Exprs[0])
+			if err != nil {
+				return nil, err
+			}
+			opAttrs = append(opAttrs, netlink.Attribute{Type: unix.NFTA_DYNSET_EXPR, Data: exprData})
+		default:
+			var elemAttrs []netlink.Attribute
+			for _, ex := range e.Exprs {
+				exprData, err := Marshal(fam, ex)
+				if err != nil {
+					return nil, err
+				}
+				elemAttrs = append(elemAttrs, netlink.Attribute{Type: unix.NFTA_LIST_ELEM, Data: exprData})
+			}
+			elemData, err := netlink.MarshalAttributes(elemAttrs)
+			if err != nil {
+				return nil, err
+			}
+			opAttrs = append(opAttrs, netlink.Attribute{Type: NFTA_DYNSET_EXPRESSIONS, Data: elemData})
+		}
+	}
+	opAttrs = append(opAttrs, netlink.Attribute{Type: unix.NFTA_DYNSET_FLAGS, Data: binaryutil.BigEndian.PutUint32(flags)})
+
+	opData, err := netlink.MarshalAttributes(opAttrs)
+	if err != nil {
+		return nil, err
+	}
+
+	return netlink.MarshalAttributes([]netlink.Attribute{
+		{Type: unix.NFTA_EXPR_NAME, Data: []byte("dynset\x00")},
+		{Type: unix.NLA_F_NESTED | unix.NFTA_EXPR_DATA, Data: opData},
+	})
+}
+
+func (e *Dynset) 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_DYNSET_SET_NAME:
+			e.SetName = ad.String()
+		case unix.NFTA_DYNSET_SET_ID:
+			e.SetID = ad.Uint32()
+		case unix.NFTA_DYNSET_SREG_KEY:
+			e.SrcRegKey = ad.Uint32()
+		case unix.NFTA_DYNSET_SREG_DATA:
+			e.SrcRegData = ad.Uint32()
+		case unix.NFTA_DYNSET_OP:
+			e.Operation = ad.Uint32()
+		case unix.NFTA_DYNSET_TIMEOUT:
+			e.Timeout = time.Duration(time.Millisecond * time.Duration(ad.Uint64()))
+		case unix.NFTA_DYNSET_FLAGS:
+			e.Invert = (ad.Uint32() & unix.NFT_DYNSET_F_INV) != 0
+		case unix.NFTA_DYNSET_EXPR:
+			exprs, err := parseexprfunc.ParseExprBytesFunc(fam, ad, ad.Bytes())
+			if err != nil {
+				return err
+			}
+			e.setInterfaceExprs(exprs)
+		case NFTA_DYNSET_EXPRESSIONS:
+			exprs, err := parseexprfunc.ParseExprMsgFunc(fam, ad.Bytes())
+			if err != nil {
+				return err
+			}
+			e.setInterfaceExprs(exprs)
+		}
+	}
+	return ad.Err()
+}
+
+func (e *Dynset) setInterfaceExprs(exprs []interface{}) {
+	e.Exprs = make([]Any, len(exprs))
+	for i := range exprs {
+		e.Exprs[i] = exprs[i].(Any)
+	}
+}