yanistyle/sing-box-extended
1
0
Fork 0
mirror of https://github.com/shtorm-7/sing-box-extended.git synced 2026-06-09 21:08:15 +03:00
Code Issues Packages Projects Releases Wiki Activity

Add hijack_dns for tun

Browse Source
This commit is contained in:
世界
2022-07-10 09:15:01 +08:00
parent a34057753c
commit ddfae8cd07
15 changed files with 220 additions and 99 deletions
Download Patch File Download Diff File Expand all files Collapse all files

96
inbound/tun.go
View File

@@ -20,6 +20,7 @@ import (
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/task"
)
var _ adapter.Inbound = (*Tun)(nil)
@@ -27,23 +28,42 @@ var _ adapter.Inbound = (*Tun)(nil)
type Tun struct {
tag string
ctx context.Context
router adapter.Router
logger log.Logger
options option.TunInboundOptions
ctx context.Context
router adapter.Router
logger log.Logger
inboundOptions option.InboundOptions
tunName string
tunMTU uint32
inet4Address netip.Prefix
inet6Address netip.Prefix
autoRoute bool
hijackDNS bool
tunName string
tunFd uintptr
tun *tun.GVisorTun
tunFd uintptr
tun *tun.GVisorTun
}
func NewTun(ctx context.Context, router adapter.Router, logger log.Logger, tag string, options option.TunInboundOptions) (*Tun, error) {
tunName := options.InterfaceName
if tunName == "" {
tunName = mkInterfaceName()
}
tunMTU := options.MTU
if tunMTU == 0 {
tunMTU = 1500
}
return &Tun{
tag: tag,
ctx: ctx,
router: router,
logger: logger,
options: options,
tag: tag,
ctx: ctx,
router: router,
logger: logger,
inboundOptions: options.InboundOptions,
tunName: tunName,
tunMTU: tunMTU,
inet4Address: netip.Prefix(options.Inet4Address),
inet6Address: netip.Prefix(options.Inet6Address),
autoRoute: options.AutoRoute,
hijackDNS: options.HijackDNS,
}, nil
}
@@ -56,38 +76,26 @@ func (t *Tun) Tag() string {
}
func (t *Tun) Start() error {
tunName := t.options.InterfaceName
if tunName == "" {
tunName = mkInterfaceName()
}
var mtu uint32
if t.options.MTU != 0 {
mtu = t.options.MTU
} else {
mtu = 1500
}
tunFd, err := tun.Open(tunName)
tunFd, err := tun.Open(t.tunName)
if err != nil {
return E.Cause(err, "create tun interface")
}
err = tun.Configure(tunName, netip.Prefix(t.options.Inet4Address), netip.Prefix(t.options.Inet6Address), mtu, t.options.AutoRoute)
err = tun.Configure(t.tunName, t.inet4Address, t.inet6Address, t.tunMTU, t.autoRoute)
if err != nil {
return E.Cause(err, "configure tun interface")
}
t.tunName = tunName
t.tunFd = tunFd
t.tun = tun.NewGVisor(t.ctx, tunFd, mtu, t)
t.tun = tun.NewGVisor(t.ctx, tunFd, t.tunMTU, t)
err = t.tun.Start()
if err != nil {
return err
}
t.logger.Info("started at ", tunName)
t.logger.Info("started at ", t.tunName)
return nil
}
func (t *Tun) Close() error {
err := tun.UnConfigure(t.tunName, netip.Prefix(t.options.Inet4Address), netip.Prefix(t.options.Inet6Address), t.options.AutoRoute)
err := tun.UnConfigure(t.tunName, t.inet4Address, t.inet6Address, t.autoRoute)
if err != nil {
return err
}
@@ -98,30 +106,40 @@ func (t *Tun) Close() error {
}
func (t *Tun) NewConnection(ctx context.Context, conn net.Conn, upstreamMetadata M.Metadata) error {
t.logger.WithContext(ctx).Info("inbound connection from ", upstreamMetadata.Source)
t.logger.WithContext(ctx).Info("inbound connection to ", upstreamMetadata.Destination)
var metadata adapter.InboundContext
metadata.Inbound = t.tag
metadata.Network = C.NetworkTCP
metadata.Source = upstreamMetadata.Source
metadata.Destination = upstreamMetadata.Destination
metadata.SniffEnabled = t.options.SniffEnabled
metadata.SniffOverrideDestination = t.options.SniffOverrideDestination
metadata.DomainStrategy = C.DomainStrategy(t.options.DomainStrategy)
metadata.SniffEnabled = t.inboundOptions.SniffEnabled
metadata.SniffOverrideDestination = t.inboundOptions.SniffOverrideDestination
metadata.DomainStrategy = C.DomainStrategy(t.inboundOptions.DomainStrategy)
if t.hijackDNS && upstreamMetadata.Destination.Port == 53 {
return task.Run(ctx, func() error {
return NewDNSConnection(ctx, t.router, t.logger, conn, metadata)
})
}
t.logger.WithContext(ctx).Info("inbound connection from ", metadata.Source)
t.logger.WithContext(ctx).Info("inbound connection to ", metadata.Destination)
return t.router.RouteConnection(ctx, conn, metadata)
}
func (t *Tun) NewPacketConnection(ctx context.Context, conn N.PacketConn, upstreamMetadata M.Metadata) error {
t.logger.WithContext(ctx).Info("inbound packet connection from ", upstreamMetadata.Source)
t.logger.WithContext(ctx).Info("inbound packet connection to ", upstreamMetadata.Destination)
var metadata adapter.InboundContext
metadata.Inbound = t.tag
metadata.Network = C.NetworkUDP
metadata.Source = upstreamMetadata.Source
metadata.Destination = upstreamMetadata.Destination
metadata.SniffEnabled = t.options.SniffEnabled
metadata.SniffOverrideDestination = t.options.SniffOverrideDestination
metadata.DomainStrategy = C.DomainStrategy(t.options.DomainStrategy)
metadata.SniffEnabled = t.inboundOptions.SniffEnabled
metadata.SniffOverrideDestination = t.inboundOptions.SniffOverrideDestination
metadata.DomainStrategy = C.DomainStrategy(t.inboundOptions.DomainStrategy)
if t.hijackDNS && upstreamMetadata.Destination.Port == 53 {
return task.Run(ctx, func() error {
return NewDNSPacketConnection(ctx, t.router, t.logger, conn, metadata)
})
}
t.logger.WithContext(ctx).Info("inbound packet connection from ", metadata.Source)
t.logger.WithContext(ctx).Info("inbound packet connection to ", metadata.Destination)
return t.router.RoutePacketConnection(ctx, conn, metadata)
}