mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-11-27 11:01:28 +00:00
667 lines
21 KiB
Go
667 lines
21 KiB
Go
package route
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"net"
|
|
"net/netip"
|
|
"os"
|
|
"os/user"
|
|
"strings"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/sagernet/sing-box/adapter"
|
|
"github.com/sagernet/sing-box/common/conntrack"
|
|
"github.com/sagernet/sing-box/common/process"
|
|
"github.com/sagernet/sing-box/common/sniff"
|
|
C "github.com/sagernet/sing-box/constant"
|
|
"github.com/sagernet/sing-box/option"
|
|
"github.com/sagernet/sing-box/outbound"
|
|
"github.com/sagernet/sing-box/route/rule"
|
|
"github.com/sagernet/sing-dns"
|
|
"github.com/sagernet/sing-mux"
|
|
"github.com/sagernet/sing-vmess"
|
|
"github.com/sagernet/sing/common"
|
|
"github.com/sagernet/sing/common/buf"
|
|
"github.com/sagernet/sing/common/bufio"
|
|
"github.com/sagernet/sing/common/bufio/deadline"
|
|
E "github.com/sagernet/sing/common/exceptions"
|
|
F "github.com/sagernet/sing/common/format"
|
|
M "github.com/sagernet/sing/common/metadata"
|
|
N "github.com/sagernet/sing/common/network"
|
|
"github.com/sagernet/sing/common/uot"
|
|
)
|
|
|
|
// Deprecated: use RouteConnectionEx instead.
|
|
func (r *Router) RouteConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
|
|
return r.routeConnection(ctx, conn, metadata, nil)
|
|
}
|
|
|
|
func (r *Router) RouteConnectionEx(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
|
|
err := r.routeConnection(ctx, conn, metadata, onClose)
|
|
if err != nil {
|
|
N.CloseOnHandshakeFailure(conn, onClose, err)
|
|
if E.IsClosedOrCanceled(err) {
|
|
r.logger.DebugContext(ctx, "connection closed: ", err)
|
|
} else {
|
|
r.logger.ErrorContext(ctx, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (r *Router) routeConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) error {
|
|
if r.pauseManager.IsDevicePaused() {
|
|
return E.New("reject connection to ", metadata.Destination, " while device paused")
|
|
}
|
|
|
|
if metadata.InboundDetour != "" {
|
|
if metadata.LastInbound == metadata.InboundDetour {
|
|
return E.New("routing loop on detour: ", metadata.InboundDetour)
|
|
}
|
|
detour := r.inboundByTag[metadata.InboundDetour]
|
|
if detour == nil {
|
|
return E.New("inbound detour not found: ", metadata.InboundDetour)
|
|
}
|
|
injectable, isInjectable := detour.(adapter.TCPInjectableInbound)
|
|
if !isInjectable {
|
|
return E.New("inbound detour is not TCP injectable: ", metadata.InboundDetour)
|
|
}
|
|
metadata.LastInbound = metadata.Inbound
|
|
metadata.Inbound = metadata.InboundDetour
|
|
metadata.InboundDetour = ""
|
|
injectable.NewConnectionEx(ctx, conn, metadata, onClose)
|
|
return nil
|
|
}
|
|
conntrack.KillerCheck()
|
|
metadata.Network = N.NetworkTCP
|
|
switch metadata.Destination.Fqdn {
|
|
case mux.Destination.Fqdn:
|
|
return E.New("global multiplex is deprecated since sing-box v1.7.0, enable multiplex in inbound options instead.")
|
|
case vmess.MuxDestination.Fqdn:
|
|
return E.New("global multiplex (v2ray legacy) not supported since sing-box v1.7.0.")
|
|
case uot.MagicAddress:
|
|
return E.New("global UoT not supported since sing-box v1.7.0.")
|
|
case uot.LegacyMagicAddress:
|
|
return E.New("global UoT (legacy) not supported since sing-box v1.7.0.")
|
|
}
|
|
if deadline.NeedAdditionalReadDeadline(conn) {
|
|
conn = deadline.NewConn(conn)
|
|
}
|
|
selectedRule, _, buffers, _, err := r.matchRule(ctx, &metadata, false, conn, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
var selectedOutbound adapter.Outbound
|
|
var selectReturn bool
|
|
if selectedRule != nil {
|
|
switch action := selectedRule.Action().(type) {
|
|
case *rule.RuleActionRoute:
|
|
var loaded bool
|
|
selectedOutbound, loaded = r.Outbound(action.Outbound)
|
|
if !loaded {
|
|
buf.ReleaseMulti(buffers)
|
|
return E.New("outbound not found: ", action.Outbound)
|
|
}
|
|
case *rule.RuleActionReturn:
|
|
selectReturn = true
|
|
case *rule.RuleActionReject:
|
|
buf.ReleaseMulti(buffers)
|
|
N.CloseOnHandshakeFailure(conn, onClose, action.Error())
|
|
return nil
|
|
case *rule.RuleActionHijackDNS:
|
|
for _, buffer := range buffers {
|
|
conn = bufio.NewCachedConn(conn, buffer)
|
|
}
|
|
r.hijackDNSStream(ctx, conn, metadata)
|
|
return nil
|
|
}
|
|
}
|
|
if selectedRule == nil || selectReturn {
|
|
if r.defaultOutboundForConnection == nil {
|
|
buf.ReleaseMulti(buffers)
|
|
return E.New("missing default outbound with TCP support")
|
|
}
|
|
selectedOutbound = r.defaultOutboundForConnection
|
|
}
|
|
if !common.Contains(selectedOutbound.Network(), N.NetworkTCP) {
|
|
buf.ReleaseMulti(buffers)
|
|
return E.New("TCP is not supported by outbound: ", selectedOutbound.Tag())
|
|
}
|
|
for _, buffer := range buffers {
|
|
conn = bufio.NewCachedConn(conn, buffer)
|
|
}
|
|
if r.clashServer != nil {
|
|
trackerConn, tracker := r.clashServer.RoutedConnection(ctx, conn, metadata, selectedRule)
|
|
defer tracker.Leave()
|
|
conn = trackerConn
|
|
}
|
|
if r.v2rayServer != nil {
|
|
if statsService := r.v2rayServer.StatsService(); statsService != nil {
|
|
conn = statsService.RoutedConnection(metadata.Inbound, selectedOutbound.Tag(), metadata.User, conn)
|
|
}
|
|
}
|
|
legacyOutbound, isLegacy := selectedOutbound.(adapter.ConnectionHandler)
|
|
if isLegacy {
|
|
err = legacyOutbound.NewConnection(ctx, conn, metadata)
|
|
if err != nil {
|
|
conn.Close()
|
|
if onClose != nil {
|
|
onClose(err)
|
|
}
|
|
return E.Cause(err, "outbound/", selectedOutbound.Type(), "[", selectedOutbound.Tag(), "]")
|
|
} else {
|
|
if onClose != nil {
|
|
onClose(nil)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
// TODO
|
|
err = outbound.NewConnection(ctx, selectedOutbound, conn, metadata)
|
|
if err != nil {
|
|
conn.Close()
|
|
if onClose != nil {
|
|
onClose(err)
|
|
}
|
|
return E.Cause(err, "outbound/", selectedOutbound.Type(), "[", selectedOutbound.Tag(), "]")
|
|
} else {
|
|
if onClose != nil {
|
|
onClose(nil)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (r *Router) RoutePacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
|
|
err := r.routePacketConnection(ctx, conn, metadata, nil)
|
|
if err != nil {
|
|
conn.Close()
|
|
if E.IsClosedOrCanceled(err) {
|
|
r.logger.DebugContext(ctx, "connection closed: ", err)
|
|
} else {
|
|
r.logger.ErrorContext(ctx, err)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (r *Router) RoutePacketConnectionEx(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
|
|
err := r.routePacketConnection(ctx, conn, metadata, onClose)
|
|
if err != nil {
|
|
N.CloseOnHandshakeFailure(conn, onClose, err)
|
|
if E.IsClosedOrCanceled(err) {
|
|
r.logger.DebugContext(ctx, "connection closed: ", err)
|
|
} else {
|
|
r.logger.ErrorContext(ctx, err)
|
|
}
|
|
} else if onClose != nil {
|
|
onClose(nil)
|
|
}
|
|
}
|
|
|
|
func (r *Router) routePacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) error {
|
|
if r.pauseManager.IsDevicePaused() {
|
|
return E.New("reject packet connection to ", metadata.Destination, " while device paused")
|
|
}
|
|
if metadata.InboundDetour != "" {
|
|
if metadata.LastInbound == metadata.InboundDetour {
|
|
return E.New("routing loop on detour: ", metadata.InboundDetour)
|
|
}
|
|
detour := r.inboundByTag[metadata.InboundDetour]
|
|
if detour == nil {
|
|
return E.New("inbound detour not found: ", metadata.InboundDetour)
|
|
}
|
|
injectable, isInjectable := detour.(adapter.UDPInjectableInbound)
|
|
if !isInjectable {
|
|
return E.New("inbound detour is not UDP injectable: ", metadata.InboundDetour)
|
|
}
|
|
metadata.LastInbound = metadata.Inbound
|
|
metadata.Inbound = metadata.InboundDetour
|
|
metadata.InboundDetour = ""
|
|
injectable.NewPacketConnectionEx(ctx, conn, metadata, onClose)
|
|
return nil
|
|
}
|
|
conntrack.KillerCheck()
|
|
|
|
// TODO: move to UoT
|
|
metadata.Network = N.NetworkUDP
|
|
|
|
// Currently we don't have deadline usages for UDP connections
|
|
/*if deadline.NeedAdditionalReadDeadline(conn) {
|
|
conn = deadline.NewPacketConn(bufio.NewNetPacketConn(conn))
|
|
}*/
|
|
|
|
selectedRule, _, _, packetBuffers, err := r.matchRule(ctx, &metadata, false, nil, conn, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
var selectedOutbound adapter.Outbound
|
|
var selectReturn bool
|
|
if selectedRule != nil {
|
|
switch action := selectedRule.Action().(type) {
|
|
case *rule.RuleActionRoute:
|
|
var loaded bool
|
|
selectedOutbound, loaded = r.Outbound(action.Outbound)
|
|
if !loaded {
|
|
N.ReleaseMultiPacketBuffer(packetBuffers)
|
|
return E.New("outbound not found: ", action.Outbound)
|
|
}
|
|
metadata.UDPDisableDomainUnmapping = action.UDPDisableDomainUnmapping
|
|
case *rule.RuleActionReturn:
|
|
selectReturn = true
|
|
case *rule.RuleActionReject:
|
|
N.ReleaseMultiPacketBuffer(packetBuffers)
|
|
N.CloseOnHandshakeFailure(conn, onClose, syscall.ECONNREFUSED)
|
|
return nil
|
|
case *rule.RuleActionHijackDNS:
|
|
r.hijackDNSPacket(ctx, conn, packetBuffers, metadata)
|
|
return nil
|
|
}
|
|
}
|
|
if selectedRule == nil || selectReturn {
|
|
if r.defaultOutboundForPacketConnection == nil {
|
|
N.ReleaseMultiPacketBuffer(packetBuffers)
|
|
return E.New("missing default outbound with UDP support")
|
|
}
|
|
selectedOutbound = r.defaultOutboundForPacketConnection
|
|
}
|
|
if !common.Contains(selectedOutbound.Network(), N.NetworkUDP) {
|
|
N.ReleaseMultiPacketBuffer(packetBuffers)
|
|
return E.New("UDP is not supported by outbound: ", selectedOutbound.Tag())
|
|
}
|
|
for _, buffer := range packetBuffers {
|
|
conn = bufio.NewCachedPacketConn(conn, buffer.Buffer, buffer.Destination)
|
|
N.PutPacketBuffer(buffer)
|
|
}
|
|
if r.clashServer != nil {
|
|
trackerConn, tracker := r.clashServer.RoutedPacketConnection(ctx, conn, metadata, selectedRule)
|
|
defer tracker.Leave()
|
|
conn = trackerConn
|
|
}
|
|
if r.v2rayServer != nil {
|
|
if statsService := r.v2rayServer.StatsService(); statsService != nil {
|
|
conn = statsService.RoutedPacketConnection(metadata.Inbound, selectedOutbound.Tag(), metadata.User, conn)
|
|
}
|
|
}
|
|
if metadata.FakeIP {
|
|
conn = bufio.NewNATPacketConn(bufio.NewNetPacketConn(conn), metadata.OriginDestination, metadata.Destination)
|
|
}
|
|
legacyOutbound, isLegacy := selectedOutbound.(adapter.PacketConnectionHandler)
|
|
if isLegacy {
|
|
err = legacyOutbound.NewPacketConnection(ctx, conn, metadata)
|
|
N.CloseOnHandshakeFailure(conn, onClose, err)
|
|
if err != nil {
|
|
return E.Cause(err, "outbound/", selectedOutbound.Type(), "[", selectedOutbound.Tag(), "]")
|
|
}
|
|
return nil
|
|
}
|
|
// TODO
|
|
err = outbound.NewPacketConnection(ctx, selectedOutbound, conn, metadata)
|
|
N.CloseOnHandshakeFailure(conn, onClose, err)
|
|
if err != nil {
|
|
return E.Cause(err, "outbound/", selectedOutbound.Type(), "[", selectedOutbound.Tag(), "]")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (r *Router) PreMatch(metadata adapter.InboundContext) error {
|
|
selectedRule, _, _, _, err := r.matchRule(r.ctx, &metadata, true, nil, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if selectedRule == nil {
|
|
return nil
|
|
}
|
|
rejectAction, isReject := selectedRule.Action().(*rule.RuleActionReject)
|
|
if !isReject {
|
|
return nil
|
|
}
|
|
return rejectAction.Error()
|
|
}
|
|
|
|
func (r *Router) matchRule(
|
|
ctx context.Context, metadata *adapter.InboundContext, preMatch bool,
|
|
inputConn net.Conn, inputPacketConn N.PacketConn, ruleIndex int,
|
|
) (
|
|
selectedRule adapter.Rule, selectedRuleIndex int,
|
|
buffers []*buf.Buffer, packetBuffers []*N.PacketBuffer, fatalErr error,
|
|
) {
|
|
if r.processSearcher != nil && metadata.ProcessInfo == nil {
|
|
var originDestination netip.AddrPort
|
|
if metadata.OriginDestination.IsValid() {
|
|
originDestination = metadata.OriginDestination.AddrPort()
|
|
} else if metadata.Destination.IsIP() {
|
|
originDestination = metadata.Destination.AddrPort()
|
|
}
|
|
processInfo, fErr := process.FindProcessInfo(r.processSearcher, ctx, metadata.Network, metadata.Source.AddrPort(), originDestination)
|
|
if fErr != nil {
|
|
r.logger.InfoContext(ctx, "failed to search process: ", fErr)
|
|
} else {
|
|
if processInfo.ProcessPath != "" {
|
|
r.logger.InfoContext(ctx, "found process path: ", processInfo.ProcessPath)
|
|
} else if processInfo.PackageName != "" {
|
|
r.logger.InfoContext(ctx, "found package name: ", processInfo.PackageName)
|
|
} else if processInfo.UserId != -1 {
|
|
if /*needUserName &&*/ true {
|
|
osUser, _ := user.LookupId(F.ToString(processInfo.UserId))
|
|
if osUser != nil {
|
|
processInfo.User = osUser.Username
|
|
}
|
|
}
|
|
if processInfo.User != "" {
|
|
r.logger.InfoContext(ctx, "found user: ", processInfo.User)
|
|
} else {
|
|
r.logger.InfoContext(ctx, "found user id: ", processInfo.UserId)
|
|
}
|
|
}
|
|
metadata.ProcessInfo = processInfo
|
|
}
|
|
}
|
|
if r.fakeIPStore != nil && r.fakeIPStore.Contains(metadata.Destination.Addr) {
|
|
domain, loaded := r.fakeIPStore.Lookup(metadata.Destination.Addr)
|
|
if !loaded {
|
|
fatalErr = E.New("missing fakeip record, try to configure experimental.cache_file")
|
|
return
|
|
}
|
|
metadata.OriginDestination = metadata.Destination
|
|
metadata.Destination = M.Socksaddr{
|
|
Fqdn: domain,
|
|
Port: metadata.Destination.Port,
|
|
}
|
|
metadata.FakeIP = true
|
|
r.logger.DebugContext(ctx, "found fakeip domain: ", domain)
|
|
}
|
|
if r.dnsReverseMapping != nil && metadata.Domain == "" {
|
|
domain, loaded := r.dnsReverseMapping.Query(metadata.Destination.Addr)
|
|
if loaded {
|
|
metadata.Domain = domain
|
|
r.logger.DebugContext(ctx, "found reserve mapped domain: ", metadata.Domain)
|
|
}
|
|
}
|
|
if metadata.Destination.IsIPv4() {
|
|
metadata.IPVersion = 4
|
|
} else if metadata.Destination.IsIPv6() {
|
|
metadata.IPVersion = 6
|
|
}
|
|
|
|
//nolint:staticcheck
|
|
if metadata.InboundOptions != common.DefaultValue[option.InboundOptions]() {
|
|
if !preMatch && metadata.InboundOptions.SniffEnabled {
|
|
newBuffer, newPackerBuffers, newErr := r.actionSniff(ctx, metadata, &rule.RuleActionSniff{
|
|
OverrideDestination: metadata.InboundOptions.SniffOverrideDestination,
|
|
Timeout: time.Duration(metadata.InboundOptions.SniffTimeout),
|
|
}, inputConn, inputPacketConn)
|
|
if newErr != nil {
|
|
fatalErr = newErr
|
|
return
|
|
}
|
|
if newBuffer != nil {
|
|
buffers = []*buf.Buffer{newBuffer}
|
|
} else if len(newPackerBuffers) > 0 {
|
|
packetBuffers = newPackerBuffers
|
|
}
|
|
}
|
|
if dns.DomainStrategy(metadata.InboundOptions.DomainStrategy) != dns.DomainStrategyAsIS {
|
|
fatalErr = r.actionResolve(ctx, metadata, &rule.RuleActionResolve{
|
|
Strategy: dns.DomainStrategy(metadata.InboundOptions.DomainStrategy),
|
|
})
|
|
if fatalErr != nil {
|
|
return
|
|
}
|
|
}
|
|
if metadata.InboundOptions.UDPDisableDomainUnmapping {
|
|
metadata.UDPDisableDomainUnmapping = true
|
|
}
|
|
metadata.InboundOptions = option.InboundOptions{}
|
|
}
|
|
|
|
match:
|
|
for ruleIndex < len(r.rules) {
|
|
rules := r.rules
|
|
if ruleIndex != -1 {
|
|
rules = rules[ruleIndex+1:]
|
|
}
|
|
var (
|
|
currentRule adapter.Rule
|
|
currentRuleIndex int
|
|
matched bool
|
|
)
|
|
for currentRuleIndex, currentRule = range rules {
|
|
if currentRule.Match(metadata) {
|
|
matched = true
|
|
break
|
|
}
|
|
}
|
|
if !matched {
|
|
break
|
|
}
|
|
if !preMatch {
|
|
ruleDescription := currentRule.String()
|
|
if ruleDescription != "" {
|
|
r.logger.DebugContext(ctx, "match[", currentRuleIndex, "] ", currentRule, " => ", currentRule.Action())
|
|
} else {
|
|
r.logger.DebugContext(ctx, "match[", currentRuleIndex, "] => ", currentRule.Action())
|
|
}
|
|
} else {
|
|
switch currentRule.Action().Type() {
|
|
case C.RuleActionTypeReject, C.RuleActionTypeResolve:
|
|
ruleDescription := currentRule.String()
|
|
if ruleDescription != "" {
|
|
r.logger.DebugContext(ctx, "pre-match[", currentRuleIndex, "] ", currentRule, " => ", currentRule.Action())
|
|
} else {
|
|
r.logger.DebugContext(ctx, "pre-match[", currentRuleIndex, "] => ", currentRule.Action())
|
|
}
|
|
}
|
|
}
|
|
switch action := currentRule.Action().(type) {
|
|
case *rule.RuleActionSniff:
|
|
if !preMatch {
|
|
newBuffer, newPacketBuffers, newErr := r.actionSniff(ctx, metadata, action, inputConn, inputPacketConn)
|
|
if newErr != nil {
|
|
fatalErr = newErr
|
|
return
|
|
}
|
|
if newBuffer != nil {
|
|
buffers = append(buffers, newBuffer)
|
|
} else if len(newPacketBuffers) > 0 {
|
|
packetBuffers = append(packetBuffers, newPacketBuffers...)
|
|
}
|
|
} else {
|
|
selectedRule = currentRule
|
|
selectedRuleIndex = currentRuleIndex
|
|
break match
|
|
}
|
|
case *rule.RuleActionResolve:
|
|
fatalErr = r.actionResolve(ctx, metadata, action)
|
|
if fatalErr != nil {
|
|
return
|
|
}
|
|
default:
|
|
selectedRule = currentRule
|
|
selectedRuleIndex = currentRuleIndex
|
|
break match
|
|
}
|
|
ruleIndex = currentRuleIndex
|
|
}
|
|
if !preMatch && metadata.Destination.Addr.IsUnspecified() {
|
|
newBuffer, newPacketBuffers, newErr := r.actionSniff(ctx, metadata, &rule.RuleActionSniff{}, inputConn, inputPacketConn)
|
|
if newErr != nil {
|
|
fatalErr = newErr
|
|
return
|
|
}
|
|
if newBuffer != nil {
|
|
buffers = append(buffers, newBuffer)
|
|
} else if len(newPacketBuffers) > 0 {
|
|
packetBuffers = append(packetBuffers, newPacketBuffers...)
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func (r *Router) actionSniff(
|
|
ctx context.Context, metadata *adapter.InboundContext, action *rule.RuleActionSniff,
|
|
inputConn net.Conn, inputPacketConn N.PacketConn,
|
|
) (buffer *buf.Buffer, packetBuffers []*N.PacketBuffer, fatalErr error) {
|
|
if sniff.Skip(metadata) {
|
|
return
|
|
} else if inputConn != nil {
|
|
sniffBuffer := buf.NewPacket()
|
|
var streamSniffers []sniff.StreamSniffer
|
|
if len(action.StreamSniffers) > 0 {
|
|
streamSniffers = action.StreamSniffers
|
|
} else {
|
|
streamSniffers = []sniff.StreamSniffer{
|
|
sniff.TLSClientHello,
|
|
sniff.HTTPHost,
|
|
sniff.StreamDomainNameQuery,
|
|
sniff.BitTorrent,
|
|
sniff.SSH,
|
|
sniff.RDP,
|
|
}
|
|
}
|
|
err := sniff.PeekStream(
|
|
ctx,
|
|
metadata,
|
|
inputConn,
|
|
sniffBuffer,
|
|
action.Timeout,
|
|
streamSniffers...,
|
|
)
|
|
if err == nil {
|
|
//goland:noinspection GoDeprecation
|
|
if action.OverrideDestination && M.IsDomainName(metadata.Domain) {
|
|
metadata.Destination = M.Socksaddr{
|
|
Fqdn: metadata.Domain,
|
|
Port: metadata.Destination.Port,
|
|
}
|
|
}
|
|
if metadata.Domain != "" && metadata.Client != "" {
|
|
r.logger.DebugContext(ctx, "sniffed protocol: ", metadata.Protocol, ", domain: ", metadata.Domain, ", client: ", metadata.Client)
|
|
} else if metadata.Domain != "" {
|
|
r.logger.DebugContext(ctx, "sniffed protocol: ", metadata.Protocol, ", domain: ", metadata.Domain)
|
|
} else {
|
|
r.logger.DebugContext(ctx, "sniffed protocol: ", metadata.Protocol)
|
|
}
|
|
}
|
|
if !sniffBuffer.IsEmpty() {
|
|
buffer = sniffBuffer
|
|
} else {
|
|
sniffBuffer.Release()
|
|
}
|
|
} else if inputPacketConn != nil {
|
|
for {
|
|
var (
|
|
sniffBuffer = buf.NewPacket()
|
|
destination M.Socksaddr
|
|
done = make(chan struct{})
|
|
err error
|
|
)
|
|
go func() {
|
|
sniffTimeout := C.ReadPayloadTimeout
|
|
if action.Timeout > 0 {
|
|
sniffTimeout = action.Timeout
|
|
}
|
|
inputPacketConn.SetReadDeadline(time.Now().Add(sniffTimeout))
|
|
destination, err = inputPacketConn.ReadPacket(sniffBuffer)
|
|
inputPacketConn.SetReadDeadline(time.Time{})
|
|
close(done)
|
|
}()
|
|
select {
|
|
case <-done:
|
|
case <-ctx.Done():
|
|
inputPacketConn.Close()
|
|
fatalErr = ctx.Err()
|
|
return
|
|
}
|
|
if err != nil {
|
|
sniffBuffer.Release()
|
|
if !errors.Is(err, os.ErrDeadlineExceeded) {
|
|
fatalErr = err
|
|
return
|
|
}
|
|
} else {
|
|
// TODO: maybe always override destination
|
|
if metadata.Destination.Addr.IsUnspecified() {
|
|
metadata.Destination = destination
|
|
}
|
|
if len(packetBuffers) > 0 {
|
|
err = sniff.PeekPacket(
|
|
ctx,
|
|
metadata,
|
|
sniffBuffer.Bytes(),
|
|
sniff.QUICClientHello,
|
|
)
|
|
} else {
|
|
var packetSniffers []sniff.PacketSniffer
|
|
if len(action.PacketSniffers) > 0 {
|
|
packetSniffers = action.PacketSniffers
|
|
} else {
|
|
packetSniffers = []sniff.PacketSniffer{
|
|
sniff.DomainNameQuery,
|
|
sniff.QUICClientHello,
|
|
sniff.STUNMessage,
|
|
sniff.UTP,
|
|
sniff.UDPTracker,
|
|
sniff.DTLSRecord,
|
|
}
|
|
}
|
|
err = sniff.PeekPacket(
|
|
ctx, metadata,
|
|
sniffBuffer.Bytes(),
|
|
packetSniffers...,
|
|
)
|
|
}
|
|
packetBuffer := N.NewPacketBuffer()
|
|
*packetBuffer = N.PacketBuffer{
|
|
Buffer: sniffBuffer,
|
|
Destination: destination,
|
|
}
|
|
packetBuffers = append(packetBuffers, packetBuffer)
|
|
if E.IsMulti(err, sniff.ErrClientHelloFragmented) && len(packetBuffers) == 0 {
|
|
r.logger.DebugContext(ctx, "attempt to sniff fragmented QUIC client hello")
|
|
continue
|
|
}
|
|
if metadata.Protocol != "" {
|
|
//goland:noinspection GoDeprecation
|
|
if action.OverrideDestination && M.IsDomainName(metadata.Domain) {
|
|
metadata.Destination = M.Socksaddr{
|
|
Fqdn: metadata.Domain,
|
|
Port: metadata.Destination.Port,
|
|
}
|
|
}
|
|
if metadata.Domain != "" && metadata.Client != "" {
|
|
r.logger.DebugContext(ctx, "sniffed packet protocol: ", metadata.Protocol, ", domain: ", metadata.Domain, ", client: ", metadata.Client)
|
|
} else if metadata.Domain != "" {
|
|
r.logger.DebugContext(ctx, "sniffed packet protocol: ", metadata.Protocol, ", domain: ", metadata.Domain)
|
|
} else if metadata.Client != "" {
|
|
r.logger.DebugContext(ctx, "sniffed packet protocol: ", metadata.Protocol, ", client: ", metadata.Client)
|
|
} else {
|
|
r.logger.DebugContext(ctx, "sniffed packet protocol: ", metadata.Protocol)
|
|
}
|
|
}
|
|
}
|
|
break
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func (r *Router) actionResolve(ctx context.Context, metadata *adapter.InboundContext, action *rule.RuleActionResolve) error {
|
|
if metadata.Destination.IsFqdn() {
|
|
metadata.DNSServer = action.Server
|
|
addresses, err := r.Lookup(adapter.WithContext(ctx, metadata), metadata.Destination.Fqdn, action.Strategy)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
metadata.DestinationAddresses = addresses
|
|
r.dnsLogger.DebugContext(ctx, "resolved [", strings.Join(F.MapToString(metadata.DestinationAddresses), " "), "]")
|
|
if metadata.Destination.IsIPv4() {
|
|
metadata.IPVersion = 4
|
|
} else if metadata.Destination.IsIPv6() {
|
|
metadata.IPVersion = 6
|
|
}
|
|
}
|
|
return nil
|
|
}
|