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feat: add skip domain and ip for burst

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This commit is contained in:
SunBK201 2025-12-07 15:14:33 +08:00
parent 873c9d5e69
commit db914c1f3c
17 changed files with 668 additions and 176 deletions
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191
src/internal/netfilter/firewall.go
View File

@ -13,7 +13,6 @@ import (
"strings"
"github.com/coreos/go-iptables/iptables"
"github.com/gonetx/ipset"
"github.com/sunbk201/ua3f/internal/config"
"sigs.k8s.io/knftables"
)
@ -25,6 +24,7 @@ const (
const (
LANSET = "UA3F_LAN"
SKIP_IPSET = "UA3F_SKIP_IPSET"
SKIP_PORTS = "22,51080,51090"
FAKEIP_RANGE = "198.18.0.0/16,198.18.0.1/15,28.0.0.1/8"
HELPER_QUEUE = 10301
@ -63,58 +63,18 @@ var LAN6_CIDRS = []string{
"ff00::/8",
}
var (
IptRuleIgnoreBrLAN = []string{
"!", "-i", "br-lan",
"-j", "RETURN",
}
IptRuleIgnoreReply = []string{
"-m", "conntrack",
"--ctdir", "REPLY",
"-j", "RETURN",
}
IptRuleIgnoreLAN = []string{
"-m", "set",
"--match-set", LANSET, "dst",
"-j", "RETURN",
}
IptRuleIgnorePorts = []string{
"-p", "tcp",
"-m", "multiport",
"--dports", SKIP_PORTS,
"-j", "RETURN",
}
)
var (
NftRuleIgnoreNotTCP = knftables.Concat(
"meta l4proto != tcp",
"return",
)
NftRuleIgnoreNotBrLAN = knftables.Concat(
"iifname != \"br-lan\"",
"return",
)
NftRuleIgnoreReply = knftables.Concat(
"ct direction reply",
"return",
)
NftRuleIgnoreLAN = knftables.Concat(
fmt.Sprintf("ip daddr @%s", LANSET),
"return",
)
NftRuleIgnoreLAN6 = knftables.Concat(
fmt.Sprintf("ip6 daddr @%s", LANSET+"_6"),
"return",
)
NftRuleIgnorePorts = knftables.Concat(
fmt.Sprintf("tcp dport { %s }", SKIP_PORTS),
"return",
)
NftRuleIgnoreFakeIP = knftables.Concat(
fmt.Sprintf("ip daddr { %s }", FAKEIP_RANGE),
"return",
)
)
var SKIP_DOMAINS = []string{
"st.dl.eccdnx.com",
"st.dl.bscstorage.net",
"st.dl.pinyuncloud.com",
"dl.steam.clngaa.com",
"cdn-ws.content.steamchina.com",
"cdn-qc.content.steamchina.com",
"cdn-ali.content.steamchina.com",
"xz.pphimalayanrt.com",
"lv.queniujq.cn",
"alibaba.cdn.steampipe.steamcontent.com",
}
func init() {
initSkipGids()
@ -125,8 +85,10 @@ type Firewall struct {
Nftable *knftables.Table
NftSetup func() error
NftCleanup func() error
NftWatch func()
IptSetup func() error
IptCleanup func() error
IptWatch func()
}
func (f *Firewall) Setup(cfg *config.Config) (err error) {
@ -140,11 +102,17 @@ func (f *Firewall) Setup(cfg *config.Config) (err error) {
return fmt.Errorf("nftables setup function is nil")
}
err = f.NftSetup()
if f.NftWatch != nil {
f.NftWatch()
}
case IPT:
if f.IptSetup == nil {
return fmt.Errorf("iptables setup function is nil")
}
err = f.IptSetup()
if f.IptWatch != nil {
f.IptWatch()
}
default:
err = fmt.Errorf("unsupported or no firewall backend: %s", backend)
}
@ -166,102 +134,6 @@ func (f *Firewall) Cleanup() error {
return nil
}
func (f *Firewall) DumpNFTables() {
cmd := exec.Command("nft", "--handle", "list", "ruleset")
output, err := cmd.CombinedOutput()
if err != nil {
return
}
slog.Info("nftables ruleset:\n" + string(output))
}
func (f *Firewall) DumpIPTables() {
var tables = []string{"filter", "nat", "mangle", "raw"}
for _, table := range tables {
cmd := exec.Command("iptables", "-t", table, "-L", "-v", "-n", "--line-numbers")
output, err := cmd.CombinedOutput()
if err != nil {
continue
}
slog.Debug(fmt.Sprintf("iptables table(%s):\n%s", table, string(output)))
}
}
func (f *Firewall) NftSetLanIP(tx *knftables.Transaction, table *knftables.Table) {
ipset := &knftables.Set{
Name: LANSET,
Table: table.Name,
Family: table.Family,
Type: "ipv4_addr",
Flags: []knftables.SetFlag{
knftables.IntervalFlag,
},
AutoMerge: knftables.PtrTo(true),
}
tx.Add(ipset)
for _, cidr := range LAN_CIDRS {
iplan := &knftables.Element{
Table: table.Name,
Family: table.Family,
Set: ipset.Name,
Key: []string{cidr},
}
tx.Add(iplan)
}
}
func (f *Firewall) NftSetLanIP6(tx *knftables.Transaction, table *knftables.Table) {
ipset := &knftables.Set{
Name: LANSET + "_6",
Table: table.Name,
Family: table.Family,
Type: "ipv6_addr",
Flags: []knftables.SetFlag{
knftables.IntervalFlag,
},
AutoMerge: knftables.PtrTo(true),
}
tx.Add(ipset)
for _, cidr := range LAN6_CIDRS {
ip6lan := &knftables.Element{
Table: table.Name,
Family: table.Family,
Set: ipset.Name,
Key: []string{cidr},
}
tx.Add(ip6lan)
}
}
func (f *Firewall) IptSetLanIP() error {
if err := ipset.Check(); err != nil {
return err
}
set, err := ipset.New(
LANSET,
ipset.HashNet,
ipset.Exist(false),
ipset.Family(ipset.Inet),
)
if err != nil {
return err
}
for _, cidr := range LAN_CIDRS {
err := set.Add(cidr)
if err != nil {
return err
}
}
return nil
}
func (f *Firewall) IptDeleteLanIP() error {
return ipset.Destroy(LANSET)
}
func (f *Firewall) AddTproxyRoute(fwmark, routeTable string) error {
sysctlCmds := [][]string{
{"-w", "net.bridge.bridge-nf-call-iptables=0"},
@ -340,6 +212,27 @@ func detectFirewallBackend(cfg *config.Config) string {
}
}
func (f *Firewall) resolveDomains(domains []string) (v4 []string, v6 []string) {
var ipv4Addrs []string
var ipv6Addrs []string
for _, domain := range domains {
ips, err := net.LookupIP(domain)
if err != nil {
slog.Warn("net.LookupIP", slog.String("domain", domain), slog.Any("error", err))
continue
}
for _, ip := range ips {
if ipv4 := ip.To4(); ipv4 != nil {
ipv4Addrs = append(ipv4Addrs, ipv4.String())
} else if ipv6 := ip.To16(); ipv6 != nil {
ipv6Addrs = append(ipv6Addrs, ipv6.String())
}
}
}
return ipv4Addrs, ipv6Addrs
}
func getWanNexthops() ([]string, error) {
out, err := exec.Command("ubus", "call", "network.interface.wan", "status").Output()
if err != nil {

151
src/internal/netfilter/iptables.go Normal file
View File

@ -0,0 +1,151 @@
package netfilter
import (
"fmt"
"log/slog"
"os/exec"
"time"
"github.com/gonetx/ipset"
)
var (
IptRuleIgnoreBrLAN = []string{
"!", "-i", "br-lan",
"-j", "RETURN",
}
IptRuleIgnoreReply = []string{
"-m", "conntrack",
"--ctdir", "REPLY",
"-j", "RETURN",
}
IptRuleIgnoreLAN = []string{
"-m", "set",
"--match-set", LANSET, "dst",
"-j", "RETURN",
}
IptRuleIgnoreIP = []string{
"-m", "set",
"--match-set", SKIP_IPSET, "dst",
"-j", "RETURN",
}
IptRuleIgnorePorts = []string{
"-p", "tcp",
"-m", "multiport",
"--dports", SKIP_PORTS,
"-j", "RETURN",
}
)
func (f *Firewall) DumpIPTables() {
var tables = []string{"filter", "nat", "mangle", "raw"}
for _, table := range tables {
cmd := exec.Command("iptables", "-t", table, "-L", "-v", "-n", "--line-numbers")
output, err := cmd.CombinedOutput()
if err != nil {
continue
}
slog.Debug(fmt.Sprintf("iptables table(%s):\n%s", table, string(output)))
}
}
func (f *Firewall) IptSetLanIP() error {
if err := ipset.Check(); err != nil {
return err
}
set, err := ipset.New(
LANSET,
ipset.HashNet,
ipset.Exist(false),
ipset.Family(ipset.Inet),
)
if err != nil {
return err
}
for _, cidr := range LAN_CIDRS {
err := set.Add(cidr)
if err != nil {
return err
}
}
return nil
}
func (f *Firewall) IptDeleteLanIP() error {
return ipset.Destroy(LANSET)
}
func (f *Firewall) IptSetSkipIP() error {
if err := ipset.Check(); err != nil {
return err
}
_, err := ipset.New(
SKIP_IPSET,
ipset.HashIp,
ipset.Family(ipset.Inet),
ipset.Timeout(time.Hour),
ipset.Exist(false),
)
if err != nil {
return err
}
_ = f.IptAddSkipDomains()
return nil
}
func (f *Firewall) IptDeleteSkipIP() error {
return ipset.Destroy(SKIP_IPSET)
}
func (f *Firewall) IptAddSkipIP(ip string) error {
if err := ipset.Check(); err != nil {
return err
}
set, err := ipset.New(
SKIP_IPSET,
ipset.HashIp,
ipset.Family(ipset.Inet),
ipset.Timeout(time.Hour),
ipset.Exist(true),
)
if err != nil {
return err
}
if err := set.Add(ip); err != nil {
return err
}
return nil
}
func (f *Firewall) IptAddSkipDomains() error {
if err := ipset.Check(); err != nil {
return err
}
set, err := ipset.New(
SKIP_IPSET,
ipset.HashIp,
ipset.Family(ipset.Inet),
ipset.Timeout(time.Hour),
ipset.Exist(true),
)
if err != nil {
return err
}
v4Addrs, v6Addrs := f.resolveDomains(SKIP_DOMAINS)
for _, addr := range v4Addrs {
if err := set.Add(addr); err != nil {
return err
}
}
for _, addr := range v6Addrs {
if err := set.Add(addr); err != nil {
return err
}
}
return nil
}

199
src/internal/netfilter/nftables.go Normal file
View File

@ -0,0 +1,199 @@
package netfilter
import (
"context"
"fmt"
"log/slog"
"os/exec"
"time"
"sigs.k8s.io/knftables"
)
var (
NftRuleIgnoreNotTCP = knftables.Concat(
"meta l4proto != tcp",
"return",
)
NftRuleIgnoreNotBrLAN = knftables.Concat(
"iifname != \"br-lan\"",
"return",
)
NftRuleIgnoreReply = knftables.Concat(
"ct direction reply",
"return",
)
NftRuleIgnoreLAN = knftables.Concat(
fmt.Sprintf("ip daddr @%s", LANSET),
"return",
)
NftRuleIgnoreLAN6 = knftables.Concat(
fmt.Sprintf("ip6 daddr @%s", LANSET+"_6"),
"return",
)
NftRuleIgnoreIP = knftables.Concat(
fmt.Sprintf("ip daddr @%s", SKIP_IPSET),
"return",
)
NftRuleIgnoreIP6 = knftables.Concat(
fmt.Sprintf("ip6 daddr @%s", SKIP_IPSET+"_6"),
"return",
)
NftRuleIgnorePorts = knftables.Concat(
fmt.Sprintf("tcp dport { %s }", SKIP_PORTS),
"return",
)
NftRuleIgnoreFakeIP = knftables.Concat(
fmt.Sprintf("ip daddr { %s }", FAKEIP_RANGE),
"return",
)
)
func (f *Firewall) DumpNFTables() {
cmd := exec.Command("nft", "--handle", "list", "ruleset")
output, err := cmd.CombinedOutput()
if err != nil {
return
}
slog.Info("nftables ruleset:\n" + string(output))
}
func (f *Firewall) NftSetLanIP(tx *knftables.Transaction, table *knftables.Table) {
ipset := &knftables.Set{
Name: LANSET,
Table: table.Name,
Family: table.Family,
Type: "ipv4_addr",
Flags: []knftables.SetFlag{
knftables.IntervalFlag,
},
AutoMerge: knftables.PtrTo(true),
}
tx.Add(ipset)
for _, cidr := range LAN_CIDRS {
iplan := &knftables.Element{
Table: table.Name,
Family: table.Family,
Set: ipset.Name,
Key: []string{cidr},
}
tx.Add(iplan)
}
}
func (f *Firewall) NftSetLanIP6(tx *knftables.Transaction, table *knftables.Table) {
ipset := &knftables.Set{
Name: LANSET + "_6",
Table: table.Name,
Family: table.Family,
Type: "ipv6_addr",
Flags: []knftables.SetFlag{
knftables.IntervalFlag,
},
AutoMerge: knftables.PtrTo(true),
}
tx.Add(ipset)
for _, cidr := range LAN6_CIDRS {
ip6lan := &knftables.Element{
Table: table.Name,
Family: table.Family,
Set: ipset.Name,
Key: []string{cidr},
}
tx.Add(ip6lan)
}
}
func (f *Firewall) NftSetSkipIP(tx *knftables.Transaction, table *knftables.Table) {
ipset := &knftables.Set{
Name: SKIP_IPSET,
Table: table.Name,
Family: table.Family,
Type: "ipv4_addr",
Flags: []knftables.SetFlag{
knftables.TimeoutFlag,
},
Timeout: knftables.PtrTo(3600 * time.Second),
}
tx.Add(ipset)
}
func (f *Firewall) NftSetSkipIP6(tx *knftables.Transaction, table *knftables.Table) {
ipset := &knftables.Set{
Name: SKIP_IPSET + "_6",
Table: table.Name,
Family: table.Family,
Type: "ipv6_addr",
Flags: []knftables.SetFlag{
knftables.TimeoutFlag,
},
Timeout: knftables.PtrTo(3600 * time.Second),
}
tx.Add(ipset)
}
func (f *Firewall) NftAddSkipIP(table *knftables.Table, addrs []string) error {
nft, err := knftables.New(table.Family, table.Name)
if err != nil {
return err
}
tx := nft.NewTransaction()
for _, addr := range addrs {
element := &knftables.Element{
Table: table.Name,
Family: table.Family,
Set: SKIP_IPSET,
Key: []string{addr},
}
tx.Add(element)
}
if err := nft.Run(context.TODO(), tx); err != nil {
return err
}
return nil
}
func (f *Firewall) NftAddSkipIP6(table *knftables.Table, addrs []string) error {
nft, err := knftables.New(table.Family, table.Name)
if err != nil {
return err
}
tx := nft.NewTransaction()
for _, addr := range addrs {
element := &knftables.Element{
Table: table.Name,
Family: table.Family,
Set: SKIP_IPSET + "_6",
Key: []string{addr},
}
tx.Add(element)
}
if err := nft.Run(context.TODO(), tx); err != nil {
return err
}
return nil
}
func (f *Firewall) NftAddSkipDomains() error {
v4Addrs, v6Addrs := f.resolveDomains(SKIP_DOMAINS)
if len(v4Addrs) > 0 {
if err := f.NftAddSkipIP(f.Nftable, v4Addrs); err != nil {
slog.Warn("f.NftAddSkipIP", slog.Any("error", err))
return err
}
}
if len(v6Addrs) > 0 {
if err := f.NftAddSkipIP6(f.Nftable, v6Addrs); err != nil {
slog.Warn("f.NftAddSkipIP6", slog.Any("error", err))
return err
}
}
return nil
}

18
src/internal/rewrite/packet.go
View File

@ -13,6 +13,7 @@ type RewriteResult struct {
Modified bool // Whether the packet was modified
HasUA bool // Whether User-Agent was found
InCache bool // Whether destination address is in cache
NeedSkip bool
}
// shouldRewriteUA determines if the User-Agent should be rewritten
@ -66,18 +67,18 @@ func (r *Rewriter) buildReplacement(srcAddr, dstAddr string, originalUA string,
// RewritePacketUserAgent rewrites User-Agent in a raw packet payload in-place
// Returns metadata about the operation
func (r *Rewriter) RewritePacketUserAgent(payload []byte, srcAddr, dstAddr string) (hasUA, modified bool) {
func (r *Rewriter) RewritePacketUserAgent(payload []byte, srcAddr, dstAddr string) (hasUA, modified, skip bool) {
// Find all User-Agent positions
positions, unterm := findUserAgentInPayload(payload)
if unterm {
log.LogInfoWithAddr(srcAddr, dstAddr, "Unterminated User-Agent found, not rewriting")
return true, false
return true, false, false
}
if len(positions) == 0 {
log.LogDebugWithAddr(srcAddr, dstAddr, "No User-Agent found in payload")
return false, false
return false, false, false
}
// Replace each User-Agent value in-place
@ -93,6 +94,10 @@ func (r *Rewriter) RewritePacketUserAgent(payload []byte, srcAddr, dstAddr strin
log.LogInfoWithAddr(srcAddr, dstAddr, fmt.Sprintf("Original User-Agent: %s", originalUA))
if originalUA == "Valve/Steam HTTP Client 1.0" {
return true, false, true
}
// Check if should rewrite
if !r.shouldRewriteUA(srcAddr, dstAddr, originalUA) {
r.Recorder.AddRecord(&statistics.PassThroughRecord{
@ -100,7 +105,7 @@ func (r *Rewriter) RewritePacketUserAgent(payload []byte, srcAddr, dstAddr strin
DestAddr: dstAddr,
UA: originalUA,
})
return true, false
return true, false, false
}
// Build replacement with regex matching
@ -110,14 +115,15 @@ func (r *Rewriter) RewritePacketUserAgent(payload []byte, srcAddr, dstAddr strin
modified = true
}
}
return true, modified
return true, modified, false
}
// RewriteTCP rewrites the TCP packet's User-Agent if applicable
func (r *Rewriter) RewriteTCP(tcp *layers.TCP, srcAddr, dstAddr string) *RewriteResult {
hasUA, modified := r.RewritePacketUserAgent(tcp.Payload, srcAddr, dstAddr)
hasUA, modified, skip := r.RewritePacketUserAgent(tcp.Payload, srcAddr, dstAddr)
return &RewriteResult{
Modified: modified,
HasUA: hasUA,
NeedSkip: skip,
}
}

6
src/internal/rewrite/rewriter.go
View File

@ -31,10 +31,11 @@ type RewriteDecision struct {
Action rule.Action
MatchedRule *rule.Rule
NeedCache bool
NeedSkip bool
}
func (d *RewriteDecision) ShouldRewrite() bool {
if d.NeedCache {
if d.NeedCache || d.NeedSkip {
return false
}
return d.Action == rule.ActionReplace ||
@ -191,6 +192,9 @@ func (r *Rewriter) EvaluateRewriteDecision(req *http.Request, srcAddr, destAddr
if isWhitelist {
log.LogInfoWithAddr(srcAddr, destAddr, fmt.Sprintf("Hit User-Agent whitelist: %s, add to cache", originalUA))
decision.NeedCache = true
if originalUA == "Valve/Steam HTTP Client 1.0" {
decision.NeedSkip = true
}
}
if !matches {
log.LogDebugWithAddr(srcAddr, destAddr, fmt.Sprintf("Not hit User-Agent regex: %s", originalUA))

9
src/internal/server/base/connlink.go
View File

@ -10,10 +10,11 @@ import (
var one = make([]byte, 1)
type ConnLink struct {
LConn net.Conn
RConn net.Conn
LAddr string
RAddr string
LConn net.Conn
RConn net.Conn
LAddr string
RAddr string
Skipped bool
}
func (c *ConnLink) CopyLR() {

4
src/internal/server/base/packet.go
View File

@ -4,6 +4,7 @@ import (
"encoding/binary"
"fmt"
"log/slog"
"net"
nfq "github.com/florianl/go-nfqueue/v2"
"github.com/google/gopacket"
@ -17,6 +18,7 @@ type Packet struct {
TCP *layers.TCP
SrcAddr string
DstAddr string
DstIP net.IP
IsIPv6 bool
}
@ -57,10 +59,12 @@ func NewPacket(a *nfq.Attribute) (packet *Packet, err error) {
ip6 := packet.NetworkLayer.(*layers.IPv6)
packet.SrcAddr = fmt.Sprintf("%s:%d", ip6.SrcIP.String(), packet.TCP.SrcPort)
packet.DstAddr = fmt.Sprintf("%s:%d", ip6.DstIP.String(), packet.TCP.DstPort)
packet.DstIP = ip6.DstIP
} else {
ip4 := packet.NetworkLayer.(*layers.IPv4)
packet.SrcAddr = fmt.Sprintf("%s:%d", ip4.SrcIP.String(), packet.TCP.SrcPort)
packet.DstAddr = fmt.Sprintf("%s:%d", ip4.DstIP.String(), packet.TCP.DstPort)
packet.DstIP = ip4.DstIP
}
return
}

26
src/internal/server/base/server.go
View File

@ -5,6 +5,7 @@ import (
"fmt"
"io"
"log/slog"
"net"
"net/http"
"strings"
"time"
@ -18,10 +19,11 @@ import (
)
type Server struct {
Cfg *config.Config
Rewriter *rewrite.Rewriter
Recorder *statistics.Recorder
Cache *expirable.LRU[string, struct{}]
Cfg *config.Config
Rewriter *rewrite.Rewriter
Recorder *statistics.Recorder
Cache *expirable.LRU[string, struct{}]
SkipIpChan chan *net.IP
}
func (s *Server) ServeConnLink(connLink *ConnLink) {
@ -52,6 +54,10 @@ func (s *Server) ProcessLR(c *ConnLink) (err error) {
if err != nil {
c.LogDebugf("ProcessLR: %s", err.Error())
}
if c.Skipped {
_ = c.CloseLR()
return
}
if _, err = io.CopyBuffer(c.RConn, reader, one); err != nil {
c.LogWarnf("Process io.CopyBuffer: %v", err)
}
@ -114,6 +120,7 @@ func (s *Server) ProcessLR(c *ConnLink) (err error) {
c.LogWarn("sniff subsequent request is not http, switch to direct forward")
return
}
if req, err = http.ReadRequest(reader); err != nil {
err = fmt.Errorf("http.ReadRequest: %w", err)
return
@ -128,6 +135,13 @@ func (s *Server) ProcessLR(c *ConnLink) (err error) {
if decision.NeedCache {
s.Cache.Add(c.RAddr, struct{}{})
}
if !c.Skipped && decision.NeedSkip && s.SkipIpChan != nil {
select {
case s.SkipIpChan <- &c.RConn.RemoteAddr().(*net.TCPAddr).IP:
c.Skipped = true
default:
}
}
if decision.ShouldRewrite() {
req = s.Rewriter.Rewrite(req, c.LAddr, c.RAddr, decision)
@ -146,5 +160,9 @@ func (s *Server) ProcessLR(c *ConnLink) (err error) {
})
return
}
if c.Skipped {
return
}
}
}

26
src/internal/server/nfqueue/iptables.go
View File

@ -5,6 +5,7 @@ package nfqueue
import (
"strconv"
"strings"
"time"
"github.com/coreos/go-iptables/iptables"
"github.com/sunbk201/ua3f/internal/netfilter"
@ -31,6 +32,10 @@ func (s *Server) iptSetup() error {
if err != nil {
return err
}
err = s.IptSetSkipIP()
if err != nil {
return err
}
err = ipt.NewChain(table, chain)
if err != nil {
@ -63,9 +68,26 @@ func (s *Server) iptCleanup() error {
ipt.Delete(table, jumpPoint, JumpChain...)
ipt.ClearAndDeleteChain(table, chain)
s.IptDeleteLanIP()
s.IptDeleteSkipIP()
return nil
}
func (s *Server) IptWatch() {
go func() {
ticker := time.NewTicker(10 * time.Minute)
defer ticker.Stop()
for {
select {
case <-ticker.C:
s.IptAddSkipDomains()
case ip := <-s.SkipIpChan:
s.IptAddSkipIP(ip.String())
}
}
}()
}
func (s *Server) IptSetNfqueue(ipt *iptables.IPTables) error {
err := ipt.Append(table, chain, netfilter.IptRuleIgnoreReply...)
if err != nil {
@ -75,6 +97,10 @@ func (s *Server) IptSetNfqueue(ipt *iptables.IPTables) error {
if err != nil {
return err
}
err = ipt.Append(table, chain, netfilter.IptRuleIgnoreIP...)
if err != nil {
return err
}
err = ipt.Append(table, chain, netfilter.IptRuleIgnorePorts...)
if err != nil {
return err

22
src/internal/server/nfqueue/nfqueue_linux.go
View File

@ -5,6 +5,7 @@ package nfqueue
import (
"fmt"
"log/slog"
"net"
"time"
nfq "github.com/florianl/go-nfqueue/v2"
@ -32,10 +33,11 @@ type Server struct {
func New(cfg *config.Config, rw *rewrite.Rewriter, rc *statistics.Recorder) *Server {
s := &Server{
Server: base.Server{
Cfg: cfg,
Rewriter: rw,
Recorder: rc,
Cache: expirable.NewLRU[string, struct{}](1024, nil, 30*time.Minute),
Cfg: cfg,
Rewriter: rw,
Recorder: rc,
Cache: expirable.NewLRU[string, struct{}](1024, nil, 30*time.Minute),
SkipIpChan: make(chan *net.IP, 512),
},
SniffCtMarkLower: 10201,
SniffCtMarkUpper: 10216,
@ -53,8 +55,10 @@ func New(cfg *config.Config, rw *rewrite.Rewriter, rc *statistics.Recorder) *Ser
},
NftSetup: s.nftSetup,
NftCleanup: s.nftCleanup,
NftWatch: s.NftWatch,
IptSetup: s.iptSetup,
IptCleanup: s.iptCleanup,
IptWatch: s.IptWatch,
}
return s
}
@ -87,6 +91,12 @@ func (s *Server) handlePacket(packet *base.Packet) {
return
}
result := s.Rewriter.RewriteTCP(packet.TCP, packet.SrcAddr, packet.DstAddr)
if result.NeedSkip {
select {
case s.SkipIpChan <- &packet.DstIP:
default:
}
}
s.sendVerdict(packet, result)
}
@ -130,6 +140,10 @@ func (s *Server) sendVerdict(packet *base.Packet, result *rewrite.RewriteResult)
}
func (s *Server) getNextMark(packet *base.Packet, result *rewrite.RewriteResult) (setMark bool, mark uint32) {
if result.NeedSkip {
return true, s.NotHTTPCtMark
}
mark, found := packet.GetCtMark()
if !found {
return true, s.SniffCtMarkLower

35
src/internal/server/nfqueue/nftables.go
View File

@ -5,6 +5,7 @@ package nfqueue
import (
"context"
"fmt"
"time"
"github.com/sunbk201/ua3f/internal/netfilter"
"sigs.k8s.io/knftables"
@ -21,6 +22,8 @@ func (s *Server) nftSetup() error {
s.NftSetLanIP(tx, s.Nftable)
s.NftSetLanIP6(tx, s.Nftable)
s.NftSetSkipIP(tx, s.Nftable)
s.NftSetSkipIP6(tx, s.Nftable)
s.NftSetNfqueue(tx, s.Nftable)
if err := nft.Run(context.TODO(), tx); err != nil {
@ -44,6 +47,28 @@ func (s *Server) nftCleanup() error {
return nil
}
func (s *Server) NftWatch() {
go func() {
_ = s.NftAddSkipDomains()
ticker := time.NewTicker(10 * time.Minute)
defer ticker.Stop()
for {
select {
case <-ticker.C:
_ = s.NftAddSkipDomains()
case ip := <-s.SkipIpChan:
if ip.To4() != nil {
s.NftAddSkipIP(s.Nftable, []string{ip.String()})
} else {
s.NftAddSkipIP6(s.Nftable, []string{ip.String()})
}
}
}
}()
}
func (s *Server) NftSetNfqueue(tx *knftables.Transaction, table *knftables.Table) {
chain := &knftables.Chain{
Name: "POSTROUTING",
@ -74,6 +99,16 @@ func (s *Server) NftSetNfqueue(tx *knftables.Transaction, table *knftables.Table
Rule: netfilter.NftRuleIgnoreLAN6,
})
tx.Add(&knftables.Rule{
Chain: chain.Name,
Rule: netfilter.NftRuleIgnoreIP,
})
tx.Add(&knftables.Rule{
Chain: chain.Name,
Rule: netfilter.NftRuleIgnoreIP6,
})
tx.Add(&knftables.Rule{
Chain: chain.Name,
Rule: netfilter.NftRuleIgnorePorts,

26
src/internal/server/redirect/iptables.go
View File

@ -4,6 +4,7 @@ package redirect
import (
"strconv"
"time"
"github.com/coreos/go-iptables/iptables"
"github.com/sunbk201/ua3f/internal/netfilter"
@ -30,6 +31,10 @@ func (s *Server) iptSetup() error {
if err != nil {
return err
}
err = s.IptSetSkipIP()
if err != nil {
return err
}
err = ipt.NewChain(table, chain)
if err != nil {
@ -56,9 +61,26 @@ func (s *Server) iptCleanup() error {
ipt.Delete(table, jumpPoint, JumpChain...)
ipt.ClearAndDeleteChain(table, chain)
s.IptDeleteLanIP()
s.IptDeleteSkipIP()
return nil
}
func (s *Server) IptWatch() {
go func() {
ticker := time.NewTicker(10 * time.Minute)
defer ticker.Stop()
for {
select {
case <-ticker.C:
s.IptAddSkipDomains()
case ip := <-s.SkipIpChan:
s.IptAddSkipIP(ip.String())
}
}
}()
}
func (s *Server) IptSetRedirect(ipt *iptables.IPTables) error {
err := ipt.Append(table, chain, netfilter.IptRuleIgnoreBrLAN...)
if err != nil {
@ -72,6 +94,10 @@ func (s *Server) IptSetRedirect(ipt *iptables.IPTables) error {
if err != nil {
return err
}
err = ipt.Append(table, chain, netfilter.IptRuleIgnoreIP...)
if err != nil {
return err
}
err = ipt.Append(table, chain, netfilter.IptRuleIgnorePorts...)
if err != nil {
return err

35
src/internal/server/redirect/nftables.go
View File

@ -5,6 +5,7 @@ package redirect
import (
"context"
"fmt"
"time"
"github.com/sunbk201/ua3f/internal/netfilter"
"sigs.k8s.io/knftables"
@ -21,6 +22,8 @@ func (s *Server) nftSetup() error {
s.NftSetLanIP(tx, s.Nftable)
s.NftSetLanIP6(tx, s.Nftable)
s.NftSetSkipIP(tx, s.Nftable)
s.NftSetSkipIP6(tx, s.Nftable)
s.NftSetRedirect(tx, s.Nftable)
if err := nft.Run(context.TODO(), tx); err != nil {
@ -44,6 +47,28 @@ func (s *Server) nftCleanup() error {
return nil
}
func (s *Server) NftWatch() {
go func() {
_ = s.NftAddSkipDomains()
ticker := time.NewTicker(10 * time.Minute)
defer ticker.Stop()
for {
select {
case <-ticker.C:
_ = s.NftAddSkipDomains()
case ip := <-s.SkipIpChan:
if ip.To4() != nil {
s.NftAddSkipIP(s.Nftable, []string{ip.String()})
} else {
s.NftAddSkipIP6(s.Nftable, []string{ip.String()})
}
}
}
}()
}
func (s *Server) NftSetRedirect(tx *knftables.Transaction, table *knftables.Table) {
chain := &knftables.Chain{
Name: "PREROUTING",
@ -79,6 +104,16 @@ func (s *Server) NftSetRedirect(tx *knftables.Transaction, table *knftables.Tabl
Rule: netfilter.NftRuleIgnoreLAN6,
})
tx.Add(&knftables.Rule{
Chain: chain.Name,
Rule: netfilter.NftRuleIgnoreIP,
})
tx.Add(&knftables.Rule{
Chain: chain.Name,
Rule: netfilter.NftRuleIgnoreIP6,
})
tx.Add(&knftables.Rule{
Chain: chain.Name,
Rule: netfilter.NftRuleIgnorePorts,

11
src/internal/server/redirect/redirect_linux.go
View File

@ -29,10 +29,11 @@ type Server struct {
func New(cfg *config.Config, rw *rewrite.Rewriter, rc *statistics.Recorder) *Server {
s := &Server{
Server: base.Server{
Cfg: cfg,
Rewriter: rw,
Recorder: rc,
Cache: expirable.NewLRU[string, struct{}](1024, nil, 30*time.Minute),
Cfg: cfg,
Rewriter: rw,
Recorder: rc,
Cache: expirable.NewLRU[string, struct{}](1024, nil, 30*time.Minute),
SkipIpChan: make(chan *net.IP, 512),
},
so_mark: netfilter.SO_MARK,
}
@ -43,8 +44,10 @@ func New(cfg *config.Config, rw *rewrite.Rewriter, rc *statistics.Recorder) *Ser
},
NftSetup: s.nftSetup,
NftCleanup: s.nftCleanup,
NftWatch: s.NftWatch,
IptSetup: s.iptSetup,
IptCleanup: s.iptCleanup,
IptWatch: s.IptWatch,
}
return s
}

29
src/internal/server/tproxy/iptables.go
View File

@ -6,6 +6,7 @@ import (
"strconv"
"strings"
"syscall"
"time"
"github.com/coreos/go-iptables/iptables"
"github.com/sunbk201/ua3f/internal/netfilter"
@ -57,6 +58,10 @@ func (s *Server) iptSetup() error {
if err != nil {
return err
}
err = s.IptSetSkipIP()
if err != nil {
return err
}
if netfilter.SIDECAR == netfilter.SC {
err = ipt.NewChain(table, chainSidecar)
@ -112,6 +117,22 @@ func (s *Server) iptCleanup() error {
return nil
}
func (s *Server) IptWatch() {
go func() {
ticker := time.NewTicker(10 * time.Minute)
defer ticker.Stop()
for {
select {
case <-ticker.C:
s.IptAddSkipDomains()
case ip := <-s.SkipIpChan:
s.IptAddSkipIP(ip.String())
}
}
}()
}
func (s *Server) IptSetTproxy(ipt *iptables.IPTables) error {
if netfilter.SIDECAR == netfilter.SC {
var RuleSidecar = []string{
@ -138,6 +159,10 @@ func (s *Server) IptSetTproxy(ipt *iptables.IPTables) error {
if err != nil {
return err
}
err = ipt.Append(table, chainPre, netfilter.IptRuleIgnoreIP...)
if err != nil {
return err
}
err = ipt.Append(table, chainPre, netfilter.IptRuleIgnorePorts...)
if err != nil {
return err
@ -210,6 +235,10 @@ func (s *Server) IptSetTproxy(ipt *iptables.IPTables) error {
if err != nil {
return err
}
err = ipt.Append(table, chainOut, netfilter.IptRuleIgnoreIP...)
if err != nil {
return err
}
err = ipt.Append(table, chainOut, netfilter.IptRuleIgnorePorts...)
if err != nil {
return err

45
src/internal/server/tproxy/nftables.go
View File

@ -6,6 +6,7 @@ import (
"context"
"fmt"
"syscall"
"time"
"github.com/sunbk201/ua3f/internal/netfilter"
"sigs.k8s.io/knftables"
@ -27,6 +28,8 @@ func (s *Server) nftSetup() error {
s.NftSetLanIP(tx, s.Nftable)
s.NftSetLanIP6(tx, s.Nftable)
s.NftSetSkipIP(tx, s.Nftable)
s.NftSetSkipIP6(tx, s.Nftable)
s.NftSetTproxy(tx, s.Nftable)
if err := nft.Run(context.TODO(), tx); err != nil {
@ -51,6 +54,28 @@ func (s *Server) nftCleanup() error {
return nil
}
func (s *Server) NftWatch() {
go func() {
_ = s.NftAddSkipDomains()
ticker := time.NewTicker(10 * time.Minute)
defer ticker.Stop()
for {
select {
case <-ticker.C:
_ = s.NftAddSkipDomains()
case ip := <-s.SkipIpChan:
if ip.To4() != nil {
s.NftAddSkipIP(s.Nftable, []string{ip.String()})
} else {
s.NftAddSkipIP6(s.Nftable, []string{ip.String()})
}
}
}
}()
}
func (s *Server) NftSetTproxy(tx *knftables.Transaction, table *knftables.Table) {
if netfilter.SIDECAR == netfilter.SC {
sidecar := &knftables.Chain{
@ -107,6 +132,16 @@ func (s *Server) NftSetTproxy(tx *knftables.Transaction, table *knftables.Table)
Rule: netfilter.NftRuleIgnoreLAN6,
})
tx.Add(&knftables.Rule{
Chain: prerouting.Name,
Rule: netfilter.NftRuleIgnoreIP,
})
tx.Add(&knftables.Rule{
Chain: prerouting.Name,
Rule: netfilter.NftRuleIgnoreIP6,
})
tx.Add(&knftables.Rule{
Chain: prerouting.Name,
Rule: netfilter.NftRuleIgnorePorts,
@ -186,6 +221,16 @@ func (s *Server) NftSetTproxy(tx *knftables.Transaction, table *knftables.Table)
Rule: netfilter.NftRuleIgnoreLAN6,
})
tx.Add(&knftables.Rule{
Chain: output.Name,
Rule: netfilter.NftRuleIgnoreIP,
})
tx.Add(&knftables.Rule{
Chain: output.Name,
Rule: netfilter.NftRuleIgnoreIP6,
})
tx.Add(&knftables.Rule{
Chain: output.Name,
Rule: netfilter.NftRuleIgnorePorts,

11
src/internal/server/tproxy/tproxy_linux.go
View File

@ -35,10 +35,11 @@ type Server struct {
func New(cfg *config.Config, rw *rewrite.Rewriter, rc *statistics.Recorder) *Server {
s := &Server{
Server: base.Server{
Cfg: cfg,
Rewriter: rw,
Recorder: rc,
Cache: expirable.NewLRU[string, struct{}](1024, nil, 30*time.Minute),
Cfg: cfg,
Rewriter: rw,
Recorder: rc,
Cache: expirable.NewLRU[string, struct{}](1024, nil, 30*time.Minute),
SkipIpChan: make(chan *net.IP, 512),
},
so_mark: netfilter.SO_MARK,
tproxyFwMark: "0x1c9",
@ -55,8 +56,10 @@ func New(cfg *config.Config, rw *rewrite.Rewriter, rc *statistics.Recorder) *Ser
},
NftSetup: s.nftSetup,
NftCleanup: s.nftCleanup,
NftWatch: s.NftWatch,
IptSetup: s.iptSetup,
IptCleanup: s.iptCleanup,
IptWatch: s.IptWatch,
}
return s
}