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Add support for client-subnet DNS options

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世界 2024-02-09 18:37:25 +08:00
parent 0517ceef76
commit f24a2aed7d
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18 changed files with 316 additions and 140 deletions
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1
adapter/router.go
View file

@ -86,6 +86,7 @@ type DNSRule interface {
Rule
DisableCache() bool
RewriteTTL() *uint32
ClientSubnet() *netip.Addr
WithAddressLimit() bool
MatchAddressLimit(metadata *InboundContext) bool
}

17
docs/configuration/dns/index.md
View file

@ -1,3 +1,11 @@
---
icon: material/new-box
---
!!! quote "Changes in sing-box 1.9.0"
:material-plus: [client_subnet](#client_subnet)
# DNS
### Structure
@ -13,6 +21,7 @@
"disable_expire": false,
"independent_cache": false,
"reverse_mapping": false,
"client_subnet": "",
"fakeip": {}
}
}
@ -60,6 +69,10 @@ Stores a reverse mapping of IP addresses after responding to a DNS query in orde
Since this process relies on the act of resolving domain names by an application before making a request, it can be
problematic in environments such as macOS, where DNS is proxied and cached by the system.
#### fakeip
#### client_subnet
[FakeIP](./fakeip/) settings.
!!! question "Since sing-box 1.9.0"
Append a `edns0-subnet` OPT extra record with the specified IP address to every query by default.
Can be overrides by `servers.[].client_subnet` or `rules.[].client_subnet`.

17
docs/configuration/dns/index.zh.md
View file

@ -1,3 +1,11 @@
---
icon: material/new-box
---
!!! quote "sing-box 1.9.0 中的更改"
:material-plus: [client_subnet](#client_subnet)
# DNS
### 结构
@ -13,6 +21,7 @@
"disable_expire": false,
"independent_cache": false,
"reverse_mapping": false,
"client_subnet": "",
"fakeip": {}
}
}
@ -58,6 +67,14 @@
由于此过程依赖于应用程序在发出请求之前解析域名的行为，因此在 macOS 等 DNS 由系统代理和缓存的环境中可能会出现问题。
#### client_subnet
!!! question "自 sing-box 1.9.0 起"
默认情况下，将带有指定 IP 地址的 `edns0-subnet` OPT 附加记录附加到每个查询。
可以被 `servers.[].client_subnet` 或 `rules.[].client_subnet` 覆盖。
#### fakeip
[FakeIP](./fakeip/) 设置。

17
docs/configuration/dns/rule.md
View file

@ -7,6 +7,7 @@ icon: material/new-box
:material-plus: [geoip](#geoip)
:material-plus: [ip_cidr](#ip_cidr)
:material-plus: [ip_is_private](#ip_is_private)
:material-plus: [client_subnet](#client_subnet)
!!! quote "Changes in sing-box 1.8.0"
@ -121,7 +122,8 @@ icon: material/new-box
],
"server": "local",
"disable_cache": false,
"rewrite_ttl": 100
"rewrite_ttl": 100,
"client_subnet": "127.0.0.1"
},
{
"type": "logical",
@ -129,7 +131,8 @@ icon: material/new-box
"rules": [],
"server": "local",
"disable_cache": false,
"rewrite_ttl": 100
"rewrite_ttl": 100,
"client_subnet": "127.0.0.1"
}
]
}
@ -280,8 +283,6 @@ Match Clash mode.
#### wifi_ssid
<!-- md:version 1.7.0-beta.4 -->
!!! quote ""
Only supported in graphical clients on Android and iOS.
@ -326,6 +327,14 @@ Disable cache and save cache in this query.
Rewrite TTL in DNS responses.
#### client_subnet
!!! question "Since sing-box 1.9.0"
Append a `edns0-subnet` OPT extra record with the specified IP address to every query by default.
Will overrides `dns.client_subnet` and `servers.[].client_subnet`.
### Address Filter Fields
Only takes effect for IP address requests. When the query results do not match the address filtering rule items, the current rule will be skipped.

15
docs/configuration/dns/rule.zh.md
View file

@ -7,6 +7,7 @@ icon: material/new-box
:material-plus: [geoip](#geoip)
:material-plus: [ip_cidr](#ip_cidr)
:material-plus: [ip_is_private](#ip_is_private)
:material-plus: [client_subnet](#client_subnet)
!!! quote "sing-box 1.8.0 中的更改"
@ -120,14 +121,16 @@ icon: material/new-box
"direct"
],
"server": "local",
"disable_cache": false
"disable_cache": false,
"client_subnet": "127.0.0.1"
},
{
"type": "logical",
"mode": "and",
"rules": [],
"server": "local",
"disable_cache": false
"disable_cache": false,
"client_subnet": "127.0.0.1"
}
]
}
@ -322,6 +325,14 @@ DNS 查询类型。值可以为整数或者类型名称字符串。
重写 DNS 回应中的 TTL。
#### client_subnet
!!! question "自 sing-box 1.9.0 起"
默认情况下，将带有指定 IP 地址的 `edns0-subnet` OPT 附加记录附加到每个查询。
将覆盖 `dns.client_subnet` 与 `servers.[].client_subnet`。
### 地址筛选字段
仅对IP地址请求生效。 当查询结果与地址筛选规则项不匹配时，将跳过当前规则。

34
docs/configuration/dns/server.md
View file

@ -1,3 +1,11 @@
---
icon: material/new-box
---
!!! quote "Changes in sing-box 1.9.0"
:material-plus: [client_subnet](#client_subnet)
### Structure
```json
@ -5,17 +13,17 @@
"dns": {
"servers": [
{
"tag": "google",
"address": "tls://dns.google",
"address_resolver": "local",
"address_strategy": "prefer_ipv4",
"strategy": "ipv4_only",
"detour": "direct"
"tag": "",
"address": "",
"address_resolver": "",
"address_strategy": "",
"strategy": "",
"detour": "",
"client_subnet": ""
}
]
}
}
```
### Fields
@ -80,10 +88,20 @@ Default domain strategy for resolving the domain names.
One of `prefer_ipv4` `prefer_ipv6` `ipv4_only` `ipv6_only`.
Take no effect if override by other settings.
Take no effect if overridden by other settings.
#### detour
Tag of an outbound for connecting to the dns server.
Default outbound will be used if empty.
#### client_subnet
!!! question "Since sing-box 1.9.0"
Append a `edns0-subnet` OPT extra record with the specified IP address to every query by default.
Can be overrides by `rules.[].client_subnet`.
Will overrides `dns.client_subnet`.

32
docs/configuration/dns/server.zh.md
View file

@ -1,3 +1,11 @@
---
icon: material/new-box
---
!!! quote "sing-box 1.9.0 中的更改"
:material-plus: [client_subnet](#client_subnet)
### 结构
```json
@ -5,17 +13,17 @@
"dns": {
"servers": [
{
"tag": "google",
"address": "tls://dns.google",
"address_resolver": "local",
"address_strategy": "prefer_ipv4",
"strategy": "ipv4_only",
"detour": "direct"
"tag": "",
"address": "",
"address_resolver": "",
"address_strategy": "",
"strategy": "",
"detour": "",
"client_subnet": ""
}
]
}
}
```
### 字段
@ -87,3 +95,13 @@ DNS 服务器的地址。
用于连接到 DNS 服务器的出站的标签。
如果为空，将使用默认出站。
#### client_subnet
!!! question "自 sing-box 1.9.0 起"
默认情况下，将带有指定 IP 地址的 `edns0-subnet` OPT 附加记录附加到每个查询。
可以被 `rules.[].client_subnet` 覆盖。
将覆盖 `dns.client_subnet`。

63
docs/manual/proxy/client.md
View file

@ -338,9 +338,7 @@ flowchart TB
=== ":material-dns: DNS rules (1.9.0+)"
!!! warning "DNS leaks"
The new DNS feature allows you to more precisely bypass Chinese websites via **DNS leaks**. Do not use plain local DNS if using this method.
=== ":material-shield-off: With DNS Leaks"
```json
{
@ -407,6 +405,65 @@ flowchart TB
}
```
=== ":material-security: Without DNS Leaks (1.9.0-alpha.2+)"
```json
{
"dns": {
"servers": [
{
"tag": "google",
"address": "tls://8.8.8.8"
},
{
"tag": "local",
"address": "https://223.5.5.5/dns-query",
"detour": "direct"
}
],
"rules": [
{
"outbound": "any",
"server": "local"
},
{
"clash_mode": "Direct",
"server": "local"
},
{
"clash_mode": "Global",
"server": "google"
},
{
"rule_set": "geosite-geolocation-cn",
"server": "local"
},
{
"rule_set": "geoip-cn",
"server": "google",
"client_subnet": "114.114.114.114" // Any China client IP address
}
]
},
"route": {
"rule_set": [
{
"type": "remote",
"tag": "geosite-geolocation-cn",
"format": "binary",
"url": "https://raw.githubusercontent.com/SagerNet/sing-geosite/rule-set/geosite-geolocation-cn.srs"
},
{
"type": "remote",
"tag": "geoip-cn",
"format": "binary",
"url": "https://raw.githubusercontent.com/SagerNet/sing-geoip/rule-set/geoip-cn.srs"
}
]
}
}
```
=== ":material-router-network: Route rules"
```json

8
experimental/libbox/dns.go
View file

@ -9,9 +9,7 @@ import (
"github.com/sagernet/sing-dns"
"github.com/sagernet/sing/common"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/logger"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
"github.com/sagernet/sing/common/task"
mDNS "github.com/miekg/dns"
@ -25,9 +23,11 @@ type LocalDNSTransport interface {
func RegisterLocalDNSTransport(transport LocalDNSTransport) {
if transport == nil {
dns.RegisterTransport([]string{"local"}, dns.CreateLocalTransport)
dns.RegisterTransport([]string{"local"}, func(options dns.TransportOptions) (dns.Transport, error) {
return dns.NewLocalTransport(options), nil
})
} else {
dns.RegisterTransport([]string{"local"}, func(name string, ctx context.Context, logger logger.ContextLogger, dialer N.Dialer, link string) (dns.Transport, error) {
dns.RegisterTransport([]string{"local"}, func(options dns.TransportOptions) (dns.Transport, error) {
return &platformLocalDNSTransport{
iif: transport,
}, nil

6
include/dhcp_stub.go
View file

@ -3,16 +3,12 @@
package include
import (
"context"
"github.com/sagernet/sing-dns"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/logger"
N "github.com/sagernet/sing/common/network"
)
func init() {
dns.RegisterTransport([]string{"dhcp"}, func(name string, ctx context.Context, logger logger.ContextLogger, dialer N.Dialer, link string) (dns.Transport, error) {
dns.RegisterTransport([]string{"dhcp"}, func(options dns.TransportOptions) (dns.Transport, error) {
return nil, E.New(`DHCP is not included in this build, rebuild with -tags with_dhcp`)
})
}

3
include/quic_stub.go
View file

@ -11,13 +11,12 @@ import (
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-box/transport/v2ray"
"github.com/sagernet/sing-dns"
"github.com/sagernet/sing/common/logger"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
)
func init() {
dns.RegisterTransport([]string{"quic", "h3"}, func(name string, ctx context.Context, logger logger.ContextLogger, dialer N.Dialer, link string) (dns.Transport, error) {
dns.RegisterTransport([]string{"quic", "h3"}, func(options dns.TransportOptions) (dns.Transport, error) {
return nil, C.ErrQUICNotIncluded
})
v2ray.RegisterQUICConstructor(

2
option/dns.go
View file

@ -19,6 +19,7 @@ type DNSServerOptions struct {
AddressFallbackDelay Duration `json:"address_fallback_delay,omitempty"`
Strategy DomainStrategy `json:"strategy,omitempty"`
Detour string `json:"detour,omitempty"`
ClientSubnet *ListenAddress `json:"client_subnet,omitempty"`
}
type DNSClientOptions struct {
@ -26,6 +27,7 @@ type DNSClientOptions struct {
DisableCache bool `json:"disable_cache,omitempty"`
DisableExpire bool `json:"disable_expire,omitempty"`
IndependentCache bool `json:"independent_cache,omitempty"`
ClientSubnet *ListenAddress `json:"client_subnet,omitempty"`
}
type DNSFakeIPOptions struct {

3
option/rule_dns.go
View file

@ -100,6 +100,7 @@ type DefaultDNSRule struct {
Server string `json:"server,omitempty"`
DisableCache bool `json:"disable_cache,omitempty"`
RewriteTTL *uint32 `json:"rewrite_ttl,omitempty"`
ClientSubnet *ListenAddress `json:"client_subnet,omitempty"`
}
func (r DefaultDNSRule) IsValid() bool {
@ -108,6 +109,7 @@ func (r DefaultDNSRule) IsValid() bool {
defaultValue.Server = r.Server
defaultValue.DisableCache = r.DisableCache
defaultValue.RewriteTTL = r.RewriteTTL
defaultValue.ClientSubnet = r.ClientSubnet
return !reflect.DeepEqual(r, defaultValue)
}
@ -118,6 +120,7 @@ type LogicalDNSRule struct {
Server string `json:"server,omitempty"`
DisableCache bool `json:"disable_cache,omitempty"`
RewriteTTL *uint32 `json:"rewrite_ttl,omitempty"`
ClientSubnet *ListenAddress `json:"client_subnet,omitempty"`
}
func (r LogicalDNSRule) IsValid() bool {

22
route/router.go
View file

@ -225,7 +225,20 @@ func NewRouter(
return nil, E.New("parse dns server[", tag, "]: missing address_resolver")
}
}
transport, err := dns.CreateTransport(tag, ctx, logFactory.NewLogger(F.ToString("dns/transport[", tag, "]")), detour, server.Address)
var clientSubnet netip.Addr
if server.ClientSubnet != nil {
clientSubnet = server.ClientSubnet.Build()
} else if dnsOptions.ClientSubnet != nil {
clientSubnet = dnsOptions.ClientSubnet.Build()
}
transport, err := dns.CreateTransport(dns.TransportOptions{
Context: ctx,
Logger: logFactory.NewLogger(F.ToString("dns/transport[", tag, "]")),
Name: tag,
Dialer: detour,
Address: server.Address,
ClientSubnet: clientSubnet,
})
if err != nil {
return nil, E.Cause(err, "parse dns server[", tag, "]")
}
@ -265,7 +278,12 @@ func NewRouter(
}
if defaultTransport == nil {
if len(transports) == 0 {
transports = append(transports, dns.NewLocalTransport("local", N.SystemDialer))
transports = append(transports, common.Must1(dns.CreateTransport(dns.TransportOptions{
Context: ctx,
Name: "local",
Address: "local",
Dialer: common.Must1(dialer.NewDefault(router, option.DialerOptions{})),
})))
}
defaultTransport = transports[0]
}

3
route/router_dns.go
View file

@ -70,6 +70,9 @@ func (r *Router) matchDNS(ctx context.Context, allowFakeIP bool, index int) (con
if rewriteTTL := rule.RewriteTTL(); rewriteTTL != nil {
ctx = dns.ContextWithRewriteTTL(ctx, *rewriteTTL)
}
if clientSubnet := rule.ClientSubnet(); clientSubnet != nil {
ctx = dns.ContextWithClientSubnet(ctx, *clientSubnet)
}
if domainStrategy, dsLoaded := r.transportDomainStrategy[transport]; dsLoaded {
return ctx, transport, domainStrategy, rule, ruleIndex
} else {

14
route/rule_dns.go
View file

@ -1,6 +1,8 @@
package route
import (
"net/netip"
"github.com/sagernet/sing-box/adapter"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/log"
@ -38,6 +40,7 @@ type DefaultDNSRule struct {
abstractDefaultRule
disableCache bool
rewriteTTL *uint32
clientSubnet *netip.Addr
}
func NewDefaultDNSRule(router adapter.Router, logger log.ContextLogger, options option.DefaultDNSRule) (*DefaultDNSRule, error) {
@ -48,6 +51,7 @@ func NewDefaultDNSRule(router adapter.Router, logger log.ContextLogger, options
},
disableCache: options.DisableCache,
rewriteTTL: options.RewriteTTL,
clientSubnet: (*netip.Addr)(options.ClientSubnet),
}
if len(options.Inbound) > 0 {
item := NewInboundRule(options.Inbound)
@ -230,6 +234,10 @@ func (r *DefaultDNSRule) RewriteTTL() *uint32 {
return r.rewriteTTL
}
func (r *DefaultDNSRule) ClientSubnet() *netip.Addr {
return r.clientSubnet
}
func (r *DefaultDNSRule) WithAddressLimit() bool {
if len(r.destinationIPCIDRItems) > 0 {
return true
@ -264,6 +272,7 @@ type LogicalDNSRule struct {
abstractLogicalRule
disableCache bool
rewriteTTL *uint32
clientSubnet *netip.Addr
}
func NewLogicalDNSRule(router adapter.Router, logger log.ContextLogger, options option.LogicalDNSRule) (*LogicalDNSRule, error) {
@ -275,6 +284,7 @@ func NewLogicalDNSRule(router adapter.Router, logger log.ContextLogger, options
},
disableCache: options.DisableCache,
rewriteTTL: options.RewriteTTL,
clientSubnet: (*netip.Addr)(options.ClientSubnet),
}
switch options.Mode {
case C.LogicalTypeAnd:
@ -302,6 +312,10 @@ func (r *LogicalDNSRule) RewriteTTL() *uint32 {
return r.rewriteTTL
}
func (r *LogicalDNSRule) ClientSubnet() *netip.Addr {
return r.clientSubnet
}
func (r *LogicalDNSRule) WithAddressLimit() bool {
for _, rawRule := range r.rules {
switch rule := rawRule.(type) {

46
transport/dhcp/server.go
View file

@ -21,9 +21,6 @@ import (
"github.com/sagernet/sing/common/buf"
"github.com/sagernet/sing/common/control"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/logger"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
"github.com/sagernet/sing/common/task"
"github.com/sagernet/sing/common/x/list"
@ -32,14 +29,14 @@ import (
)
func init() {
dns.RegisterTransport([]string{"dhcp"}, NewTransport)
dns.RegisterTransport([]string{"dhcp"}, func(options dns.TransportOptions) (dns.Transport, error) {
return NewTransport(options)
})
}
type Transport struct {
name string
ctx context.Context
options dns.TransportOptions
router adapter.Router
logger logger.Logger
interfaceName string
autoInterface bool
interfaceCallback *list.Element[tun.DefaultInterfaceUpdateCallback]
@ -48,23 +45,20 @@ type Transport struct {
updatedAt time.Time
}
func NewTransport(name string, ctx context.Context, logger logger.ContextLogger, dialer N.Dialer, link string) (dns.Transport, error) {
linkURL, err := url.Parse(link)
func NewTransport(options dns.TransportOptions) (*Transport, error) {
linkURL, err := url.Parse(options.Address)
if err != nil {
return nil, err
}
if linkURL.Host == "" {
return nil, E.New("missing interface name for DHCP")
}
router := adapter.RouterFromContext(ctx)
router := adapter.RouterFromContext(options.Context)
if router == nil {
return nil, E.New("missing router in context")
}
transport := &Transport{
name: name,
ctx: ctx,
router: router,
logger: logger,
interfaceName: linkURL.Host,
autoInterface: linkURL.Host == "auto",
}
@ -72,7 +66,7 @@ func NewTransport(name string, ctx context.Context, logger logger.ContextLogger,
}
func (t *Transport) Name() string {
return t.name
return t.options.Name
}
func (t *Transport) Start() error {
@ -158,8 +152,8 @@ func (t *Transport) updateServers() error {
return E.Cause(err, "dhcp: prepare interface")
}
t.logger.Info("dhcp: query DNS servers on ", iface.Name)
fetchCtx, cancel := context.WithTimeout(t.ctx, C.DHCPTimeout)
t.options.Logger.Info("dhcp: query DNS servers on ", iface.Name)
fetchCtx, cancel := context.WithTimeout(t.options.Context, C.DHCPTimeout)
err = t.fetchServers0(fetchCtx, iface)
cancel()
if err != nil {
@ -175,7 +169,7 @@ func (t *Transport) updateServers() error {
func (t *Transport) interfaceUpdated(int) {
err := t.updateServers()
if err != nil {
t.logger.Error("update servers: ", err)
t.options.Logger.Error("update servers: ", err)
}
}
@ -187,7 +181,7 @@ func (t *Transport) fetchServers0(ctx context.Context, iface *net.Interface) err
if runtime.GOOS == "linux" || runtime.GOOS == "android" {
listenAddr = "255.255.255.255:68"
}
packetConn, err := listener.ListenPacket(t.ctx, "udp4", listenAddr)
packetConn, err := listener.ListenPacket(t.options.Context, "udp4", listenAddr)
if err != nil {
return err
}
@ -225,17 +219,17 @@ func (t *Transport) fetchServersResponse(iface *net.Interface, packetConn net.Pa
dhcpPacket, err := dhcpv4.FromBytes(buffer.Bytes())
if err != nil {
t.logger.Trace("dhcp: parse DHCP response: ", err)
t.options.Logger.Trace("dhcp: parse DHCP response: ", err)
return err
}
if dhcpPacket.MessageType() != dhcpv4.MessageTypeOffer {
t.logger.Trace("dhcp: expected OFFER response, but got ", dhcpPacket.MessageType())
t.options.Logger.Trace("dhcp: expected OFFER response, but got ", dhcpPacket.MessageType())
continue
}
if dhcpPacket.TransactionID != transactionID {
t.logger.Trace("dhcp: expected transaction ID ", transactionID, ", but got ", dhcpPacket.TransactionID)
t.options.Logger.Trace("dhcp: expected transaction ID ", transactionID, ", but got ", dhcpPacket.TransactionID)
continue
}
@ -255,20 +249,22 @@ func (t *Transport) fetchServersResponse(iface *net.Interface, packetConn net.Pa
func (t *Transport) recreateServers(iface *net.Interface, serverAddrs []netip.Addr) error {
if len(serverAddrs) > 0 {
t.logger.Info("dhcp: updated DNS servers from ", iface.Name, ": [", strings.Join(common.Map(serverAddrs, func(it netip.Addr) string {
t.options.Logger.Info("dhcp: updated DNS servers from ", iface.Name, ": [", strings.Join(common.Map(serverAddrs, func(it netip.Addr) string {
return it.String()
}), ","), "]")
}
serverDialer := common.Must1(dialer.NewDefault(t.router, option.DialerOptions{
BindInterface: iface.Name,
UDPFragmentDefault: true,
}))
var transports []dns.Transport
for _, serverAddr := range serverAddrs {
serverTransport, err := dns.NewUDPTransport(t.name, t.ctx, serverDialer, M.Socksaddr{Addr: serverAddr, Port: 53})
newOptions := t.options
newOptions.Address = serverAddr.String()
newOptions.Dialer = serverDialer
serverTransport, err := dns.NewUDPTransport(newOptions)
if err != nil {
return err
return E.Cause(err, "create UDP transport from DHCP result: ", serverAddr)
}
transports = append(transports, serverTransport)
}

13
transport/fakeip/server.go
View file

@ -9,7 +9,6 @@ import (
"github.com/sagernet/sing-dns"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/logger"
N "github.com/sagernet/sing/common/network"
mDNS "github.com/miekg/dns"
)
@ -20,7 +19,9 @@ var (
)
func init() {
dns.RegisterTransport([]string{"fakeip"}, NewTransport)
dns.RegisterTransport([]string{"fakeip"}, func(options dns.TransportOptions) (dns.Transport, error) {
return NewTransport(options)
})
}
type Transport struct {
@ -30,15 +31,15 @@ type Transport struct {
logger logger.ContextLogger
}
func NewTransport(name string, ctx context.Context, logger logger.ContextLogger, dialer N.Dialer, link string) (dns.Transport, error) {
router := adapter.RouterFromContext(ctx)
func NewTransport(options dns.TransportOptions) (*Transport, error) {
router := adapter.RouterFromContext(options.Context)
if router == nil {
return nil, E.New("missing router in context")
}
return &Transport{
name: name,
name: options.Name,
router: router,
logger: logger,
logger: options.Logger,
}, nil
}