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Feature: add custom DNS support (#56)

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This commit is contained in:
gVisor bot 2018-12-05 21:13:29 +08:00
parent 7f31c3d7a4
commit 81ade5cfca
23 changed files with 939 additions and 124 deletions
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7
adapters/inbound/socket.go
View File

@ -29,9 +29,12 @@ func (s *SocketAdapter) Conn() net.Conn {
}
// NewSocket is SocketAdapter generator
func NewSocket(target socks.Addr, conn net.Conn) *SocketAdapter {
func NewSocket(target socks.Addr, conn net.Conn, source C.SourceType) *SocketAdapter {
metadata := parseSocksAddr(target)
metadata.Source = source
return &SocketAdapter{
conn: conn,
metadata: parseSocksAddr(target),
metadata: metadata,
}
}

68
adapters/inbound/util.go
View File

@ -10,32 +10,26 @@ import (
)
func parseSocksAddr(target socks.Addr) *C.Metadata {
var host, port string
var ip net.IP
metadata := &C.Metadata{
NetWork: C.TCP,
AddrType: int(target[0]),
}
switch target[0] {
case socks.AtypDomainName:
host = string(target[2 : 2+target[1]])
port = strconv.Itoa((int(target[2+target[1]]) << 8) | int(target[2+target[1]+1]))
ipAddr, err := net.ResolveIPAddr("ip", host)
if err == nil {
ip = ipAddr.IP
}
metadata.Host = string(target[2 : 2+target[1]])
metadata.Port = strconv.Itoa((int(target[2+target[1]]) << 8) | int(target[2+target[1]+1]))
case socks.AtypIPv4:
ip = net.IP(target[1 : 1+net.IPv4len])
port = strconv.Itoa((int(target[1+net.IPv4len]) << 8) | int(target[1+net.IPv4len+1]))
ip := net.IP(target[1 : 1+net.IPv4len])
metadata.IP = &ip
metadata.Port = strconv.Itoa((int(target[1+net.IPv4len]) << 8) | int(target[1+net.IPv4len+1]))
case socks.AtypIPv6:
ip = net.IP(target[1 : 1+net.IPv6len])
port = strconv.Itoa((int(target[1+net.IPv6len]) << 8) | int(target[1+net.IPv6len+1]))
ip := net.IP(target[1 : 1+net.IPv6len])
metadata.IP = &ip
metadata.Port = strconv.Itoa((int(target[1+net.IPv6len]) << 8) | int(target[1+net.IPv6len+1]))
}
return &C.Metadata{
NetWork: C.TCP,
AddrType: int(target[0]),
Host: host,
IP: &ip,
Port: port,
}
return metadata
}
func parseHTTPAddr(request *http.Request) *C.Metadata {
@ -44,28 +38,26 @@ func parseHTTPAddr(request *http.Request) *C.Metadata {
if port == "" {
port = "80"
}
ipAddr, err := net.ResolveIPAddr("ip", host)
var resolveIP *net.IP
if err == nil {
resolveIP = &ipAddr.IP
}
var addType int
ip := net.ParseIP(host)
switch {
case ip == nil:
addType = socks.AtypDomainName
case ip.To4() == nil:
addType = socks.AtypIPv6
default:
addType = socks.AtypIPv4
}
return &C.Metadata{
metadata := &C.Metadata{
NetWork: C.TCP,
AddrType: addType,
Source: C.HTTP,
AddrType: C.AtypDomainName,
Host: host,
IP: resolveIP,
IP: nil,
Port: port,
}
ip := net.ParseIP(host)
if ip != nil {
switch {
case ip.To4() == nil:
metadata.AddrType = C.AtypIPv6
default:
metadata.AddrType = C.AtypIPv4
}
metadata.IP = &ip
}
return metadata
}

7
adapters/outbound/direct.go
View File

@ -33,7 +33,12 @@ func (d *Direct) Type() C.AdapterType {
}
func (d *Direct) Generator(metadata *C.Metadata) (adapter C.ProxyAdapter, err error) {
c, err := net.DialTimeout("tcp", net.JoinHostPort(metadata.String(), metadata.Port), tcpTimeout)
address := net.JoinHostPort(metadata.Host, metadata.Port)
if metadata.IP != nil {
address = net.JoinHostPort(metadata.IP.String(), metadata.Port)
}
c, err := net.DialTimeout("tcp", address, tcpTimeout)
if err != nil {
return
}

91
common/cache/cache.go vendored Normal file
View File

@ -0,0 +1,91 @@
package cache
import (
"runtime"
"sync"
"time"
)
// Cache store element with a expired time
type Cache struct {
*cache
}
type cache struct {
mapping sync.Map
janitor *janitor
}
type element struct {
Expired time.Time
Payload interface{}
}
// Put element in Cache with its ttl
func (c *cache) Put(key interface{}, payload interface{}, ttl time.Duration) {
c.mapping.Store(key, &element{
Payload: payload,
Expired: time.Now().Add(ttl),
})
}
// Get element in Cache, and drop when it expired
func (c *cache) Get(key interface{}) interface{} {
item, exist := c.mapping.Load(key)
if !exist {
return nil
}
elm := item.(*element)
// expired
if time.Since(elm.Expired) > 0 {
c.mapping.Delete(key)
return nil
}
return elm.Payload
}
func (c *cache) cleanup() {
c.mapping.Range(func(k, v interface{}) bool {
key := k.(string)
elm := v.(*element)
if time.Since(elm.Expired) > 0 {
c.mapping.Delete(key)
}
return true
})
}
type janitor struct {
interval time.Duration
stop chan struct{}
}
func (j *janitor) process(c *cache) {
ticker := time.NewTicker(j.interval)
for {
select {
case <-ticker.C:
c.cleanup()
case <-j.stop:
ticker.Stop()
return
}
}
}
func stopJanitor(c *Cache) {
c.janitor.stop <- struct{}{}
}
// New return *Cache
func New(interval time.Duration) *Cache {
j := &janitor{
interval: interval,
stop: make(chan struct{}),
}
c := &cache{janitor: j}
go j.process(c)
C := &Cache{c}
runtime.SetFinalizer(C, stopJanitor)
return C
}

70
common/cache/cache_test.go vendored Normal file
View File

@ -0,0 +1,70 @@
package cache
import (
"runtime"
"testing"
"time"
)
func TestCache_Basic(t *testing.T) {
interval := 200 * time.Millisecond
ttl := 20 * time.Millisecond
c := New(interval)
c.Put("int", 1, ttl)
c.Put("string", "a", ttl)
i := c.Get("int")
if i.(int) != 1 {
t.Error("should recv 1")
}
s := c.Get("string")
if s.(string) != "a" {
t.Error("should recv 'a'")
}
}
func TestCache_TTL(t *testing.T) {
interval := 200 * time.Millisecond
ttl := 20 * time.Millisecond
c := New(interval)
c.Put("int", 1, ttl)
i := c.Get("int")
if i.(int) != 1 {
t.Error("should recv 1")
}
time.Sleep(ttl * 2)
i = c.Get("int")
if i != nil {
t.Error("should recv nil")
}
}
func TestCache_AutoCleanup(t *testing.T) {
interval := 10 * time.Millisecond
ttl := 15 * time.Millisecond
c := New(interval)
c.Put("int", 1, ttl)
time.Sleep(ttl * 2)
i := c.Get("int")
if i != nil {
t.Error("should recv nil")
}
}
func TestCache_AutoGC(t *testing.T) {
sign := make(chan struct{})
go func() {
interval := 10 * time.Millisecond
ttl := 15 * time.Millisecond
c := New(interval)
c.Put("int", 1, ttl)
sign <- struct{}{}
}()
<-sign
runtime.GC()
}

22
common/picker/picker.go Normal file
View File

@ -0,0 +1,22 @@
package picker
import "context"
func SelectFast(ctx context.Context, in <-chan interface{}) <-chan interface{} {
out := make(chan interface{})
go func() {
select {
case p, open := <-in:
if open {
out <- p
}
case <-ctx.Done():
}
close(out)
for range in {
}
}()
return out
}

44
common/picker/picker_test.go Normal file
View File

@ -0,0 +1,44 @@
package picker
import (
"context"
"testing"
"time"
)
func sleepAndSend(delay int, in chan<- interface{}, input interface{}) {
time.Sleep(time.Millisecond * time.Duration(delay))
in <- input
}
func sleepAndClose(delay int, in chan interface{}) {
time.Sleep(time.Millisecond * time.Duration(delay))
close(in)
}
func TestPicker_Basic(t *testing.T) {
in := make(chan interface{})
fast := SelectFast(context.Background(), in)
go sleepAndSend(20, in, 1)
go sleepAndSend(30, in, 2)
go sleepAndClose(40, in)
number, exist := <-fast
if !exist || number != 1 {
t.Error("should recv 1", exist, number)
}
}
func TestPicker_Timeout(t *testing.T) {
in := make(chan interface{})
ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*5)
defer cancel()
fast := SelectFast(ctx, in)
go sleepAndSend(20, in, 1)
go sleepAndClose(30, in)
_, exist := <-fast
if exist {
t.Error("should recv false")
}
}

149
config/config.go
View File

@ -3,12 +3,15 @@ package config
import (
"fmt"
"io/ioutil"
"net"
"net/url"
"os"
"strings"
adapters "github.com/Dreamacro/clash/adapters/outbound"
"github.com/Dreamacro/clash/common/structure"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/dns"
"github.com/Dreamacro/clash/log"
R "github.com/Dreamacro/clash/rules"
T "github.com/Dreamacro/clash/tunnel"
@ -28,28 +31,49 @@ type General struct {
Secret string `json:"secret,omitempty"`
}
type rawConfig struct {
Port int `yaml:"port"`
SocksPort int `yaml:"socks-port"`
RedirPort int `yaml:"redir-port"`
AllowLan bool `yaml:"allow-lan"`
Mode string `yaml:"mode"`
LogLevel string `yaml:"log-level"`
ExternalController string `yaml:"external-controller"`
Secret string `yaml:"secret"`
Proxy []map[string]interface{} `yaml:"Proxy"`
ProxyGroup []map[string]interface{} `yaml:"Proxy Group"`
Rule []string `yaml:"Rule"`
// DNS config
type DNS struct {
Enable bool `yaml:"enable"`
IPv6 bool `yaml:"ipv6"`
NameServer []dns.NameServer `yaml:"nameserver"`
Fallback []dns.NameServer `yaml:"fallback"`
Listen string `yaml:"listen"`
EnhancedMode dns.EnhancedMode `yaml:"enhanced-mode"`
}
// Config is clash config manager
type Config struct {
General *General
DNS *DNS
Rules []C.Rule
Proxies map[string]C.Proxy
}
type rawDNS struct {
Enable bool `yaml:"enable"`
IPv6 bool `yaml:"ipv6"`
NameServer []string `yaml:"nameserver"`
Fallback []string `yaml:"fallback"`
Listen string `yaml:"listen"`
EnhancedMode dns.EnhancedMode `yaml:"enhanced-mode"`
}
type rawConfig struct {
Port int `yaml:"port"`
SocksPort int `yaml:"socks-port"`
RedirPort int `yaml:"redir-port"`
AllowLan bool `yaml:"allow-lan"`
Mode T.Mode `yaml:"mode"`
LogLevel log.LogLevel `yaml:"log-level"`
ExternalController string `yaml:"external-controller"`
Secret string `yaml:"secret"`
DNS *rawDNS `yaml:"dns"`
Proxy []map[string]interface{} `yaml:"Proxy"`
ProxyGroup []map[string]interface{} `yaml:"Proxy Group"`
Rule []string `yaml:"Rule"`
}
func readConfig(path string) (*rawConfig, error) {
if _, err := os.Stat(path); os.IsNotExist(err) {
return nil, err
@ -66,8 +90,8 @@ func readConfig(path string) (*rawConfig, error) {
// config with some default value
rawConfig := &rawConfig{
AllowLan: false,
Mode: T.Rule.String(),
LogLevel: log.INFO.String(),
Mode: T.Rule,
LogLevel: log.INFO,
Rule: []string{},
Proxy: []map[string]interface{}{},
ProxyGroup: []map[string]interface{}{},
@ -103,6 +127,12 @@ func Parse(path string) (*Config, error) {
}
config.Rules = rules
dnsCfg, err := parseDNS(rawCfg.DNS)
if err != nil {
return nil, err
}
config.DNS = dnsCfg
return config, nil
}
@ -111,20 +141,10 @@ func parseGeneral(cfg *rawConfig) (*General, error) {
socksPort := cfg.SocksPort
redirPort := cfg.RedirPort
allowLan := cfg.AllowLan
logLevelString := cfg.LogLevel
modeString := cfg.Mode
externalController := cfg.ExternalController
secret := cfg.Secret
mode, exist := T.ModeMapping[modeString]
if !exist {
return nil, fmt.Errorf("General.mode value invalid")
}
logLevel, exist := log.LogLevelMapping[logLevelString]
if !exist {
return nil, fmt.Errorf("General.log-level value invalid")
}
mode := cfg.Mode
logLevel := cfg.LogLevel
general := &General{
Port: port,
@ -310,3 +330,78 @@ func parseRules(cfg *rawConfig) ([]C.Rule, error) {
return rules, nil
}
func hostWithDefaultPort(host string, defPort string) (string, error) {
if !strings.Contains(host, ":") {
host += ":"
}
hostname, port, err := net.SplitHostPort(host)
if err != nil {
return "", err
}
if port == "" {
port = defPort
}
return net.JoinHostPort(hostname, port), nil
}
func parseNameServer(servers []string) ([]dns.NameServer, error) {
nameservers := []dns.NameServer{}
log.Debugln("%#v", servers)
for idx, server := range servers {
// parse without scheme .e.g 8.8.8.8:53
if host, err := hostWithDefaultPort(server, "53"); err == nil {
nameservers = append(
nameservers,
dns.NameServer{Addr: host},
)
continue
}
u, err := url.Parse(server)
if err != nil {
return nil, fmt.Errorf("DNS NameServer[%d] format error: %s", idx, err.Error())
}
if u.Scheme != "tls" {
return nil, fmt.Errorf("DNS NameServer[%d] unsupport scheme: %s", idx, u.Scheme)
}
host, err := hostWithDefaultPort(u.Host, "853")
nameservers = append(
nameservers,
dns.NameServer{
Net: "tcp-tls",
Addr: host,
},
)
}
return nameservers, nil
}
func parseDNS(cfg *rawDNS) (*DNS, error) {
if cfg.Enable && len(cfg.NameServer) == 0 {
return nil, fmt.Errorf("If DNS configuration is turned on, NameServer cannot be empty")
}
dnsCfg := &DNS{
Enable: cfg.Enable,
Listen: cfg.Listen,
EnhancedMode: cfg.EnhancedMode,
}
if nameserver, err := parseNameServer(cfg.NameServer); err == nil {
dnsCfg.NameServer = nameserver
}
if fallback, err := parseNameServer(cfg.Fallback); err == nil {
dnsCfg.Fallback = fallback
}
return dnsCfg, nil
}

1
constant/metadata.go
View File

@ -15,6 +15,7 @@ const (
HTTP SourceType = iota
SOCKS
REDIR
)
type NetWork int

263
dns/client.go Normal file
View File

@ -0,0 +1,263 @@
package dns
import (
"context"
"crypto/tls"
"errors"
"net"
"strings"
"sync"
"time"
"github.com/Dreamacro/clash/common/cache"
"github.com/Dreamacro/clash/common/picker"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/log"
D "github.com/miekg/dns"
geoip2 "github.com/oschwald/geoip2-golang"
)
var (
globalSessionCache = tls.NewLRUClientSessionCache(64)
mmdb *geoip2.Reader
once sync.Once
resolver *Resolver
)
type Resolver struct {
ipv6 bool
mapping bool
fallback []*nameserver
main []*nameserver
cache *cache.Cache
}
type result struct {
Msg *D.Msg
Error error
}
func isIPRequest(q D.Question) bool {
if q.Qclass == D.ClassINET && (q.Qtype == D.TypeA || q.Qtype == D.TypeAAAA) {
return true
}
return false
}
func (r *Resolver) Exchange(m *D.Msg) (msg *D.Msg, err error) {
if len(m.Question) == 0 {
return nil, errors.New("should have one question at least")
}
q := m.Question[0]
cache := r.cache.Get(q.String())
if cache != nil {
return cache.(*D.Msg).Copy(), nil
}
defer func() {
if msg != nil {
putMsgToCache(r.cache, q.String(), msg)
if r.mapping {
ips, err := r.msgToIP(msg)
if err != nil {
log.Debugln("[DNS] msg to ip error: %s", err.Error())
return
}
for _, ip := range ips {
putMsgToCache(r.cache, ip.String(), msg)
}
}
}
}()
isIPReq := isIPRequest(q)
if isIPReq {
msg, err = r.resolveIP(m)
return
}
msg, err = r.exchange(r.main, m)
return
}
func (r *Resolver) exchange(servers []*nameserver, m *D.Msg) (msg *D.Msg, err error) {
in := make(chan interface{})
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
fast := picker.SelectFast(ctx, in)
wg := sync.WaitGroup{}
wg.Add(len(servers))
for _, server := range servers {
go func(s *nameserver) {
defer wg.Done()
msg, _, err := s.Client.Exchange(m, s.Address)
if err != nil || msg.Rcode != D.RcodeSuccess {
return
}
in <- &result{Msg: msg, Error: err}
}(server)
}
// release in channel
go func() {
wg.Wait()
close(in)
}()
elm, exist := <-fast
if !exist {
return nil, errors.New("All DNS requests failed")
}
resp := elm.(*result)
msg, err = resp.Msg, resp.Error
return
}
func (r *Resolver) resolveIP(m *D.Msg) (msg *D.Msg, err error) {
msgCh := r.resolve(r.main, m)
if r.fallback == nil {
res := <-msgCh
msg, err = res.Msg, res.Error
return
}
fallbackMsg := r.resolve(r.fallback, m)
res := <-msgCh
if res.Error == nil {
if mmdb == nil {
return nil, errors.New("GeoIP can't use")
}
ips, _ := r.msgToIP(res.Msg)
if record, _ := mmdb.Country(ips[0]); record.Country.IsoCode == "CN" || record.Country.IsoCode == "" {
// release channel
go func() { <-fallbackMsg }()
msg = res.Msg
return
}
}
res = <-fallbackMsg
msg, err = res.Msg, res.Error
return
}
func (r *Resolver) ResolveIP(host string) (ip net.IP, err error) {
query := &D.Msg{}
dnsType := D.TypeA
if r.ipv6 {
dnsType = D.TypeAAAA
}
query.SetQuestion(D.Fqdn(host), dnsType)
msg, err := r.Exchange(query)
if err != nil {
return nil, err
}
var ips []net.IP
ips, err = r.msgToIP(msg)
if err != nil {
return nil, err
}
ip = ips[0]
return
}
func (r *Resolver) msgToIP(msg *D.Msg) ([]net.IP, error) {
var ips []net.IP
for _, answer := range msg.Answer {
if r.ipv6 {
ans, ok := answer.(*D.AAAA)
if !ok {
continue
}
ips = append(ips, ans.AAAA)
continue
}
ans, ok := answer.(*D.A)
if !ok {
continue
}
ips = append(ips, ans.A)
}
if len(ips) == 0 {
return nil, errors.New("Can't parse msg")
}
return ips, nil
}
func (r *Resolver) IPToHost(ip net.IP) (string, bool) {
cache := r.cache.Get(ip.String())
if cache == nil {
return "", false
}
fqdn := cache.(*D.Msg).Question[0].Name
return strings.TrimRight(fqdn, "."), true
}
func (r *Resolver) resolve(client []*nameserver, msg *D.Msg) <-chan *result {
ch := make(chan *result)
go func() {
res, err := r.exchange(client, msg)
ch <- &result{Msg: res, Error: err}
}()
return ch
}
type NameServer struct {
Net string
Addr string
}
type nameserver struct {
Client *D.Client
Address string
}
type Config struct {
Main, Fallback []NameServer
IPv6 bool
EnhancedMode EnhancedMode
}
func transform(servers []NameServer) []*nameserver {
var ret []*nameserver
for _, s := range servers {
ret = append(ret, &nameserver{
Client: &D.Client{
Net: s.Net,
TLSConfig: &tls.Config{
ClientSessionCache: globalSessionCache,
},
},
Address: s.Addr,
})
}
return ret
}
func New(config Config) *Resolver {
once.Do(func() {
mmdb, _ = geoip2.Open(C.Path.MMDB())
})
r := &Resolver{
main: transform(config.Main),
ipv6: config.IPv6,
cache: cache.New(time.Second * 60),
mapping: config.EnhancedMode == MAPPING,
}
if config.Fallback != nil {
r.fallback = transform(config.Fallback)
}
return r
}

62
dns/server.go Normal file
View File

@ -0,0 +1,62 @@
package dns
import (
"net"
D "github.com/miekg/dns"
)
var (
address string
server = &Server{}
)
type Server struct {
*D.Server
r *Resolver
}
func (s *Server) ServeDNS(w D.ResponseWriter, r *D.Msg) {
msg, err := s.r.Exchange(r)
if err != nil {
D.HandleFailed(w, r)
return
}
msg.SetReply(r)
w.WriteMsg(msg)
}
func ReCreateServer(addr string, resolver *Resolver) error {
if server.Server != nil {
server.Shutdown()
}
if addr == address {
return nil
}
_, port, err := net.SplitHostPort(addr)
if port == "0" || port == "" || err != nil {
return nil
}
udpAddr, err := net.ResolveUDPAddr("udp", addr)
if err != nil {
return err
}
p, err := net.ListenUDP("udp", udpAddr)
if err != nil {
return err
}
address = addr
server = &Server{r: resolver}
server.Server = &D.Server{Addr: addr, PacketConn: p, Handler: server}
go func() {
server.ActivateAndServe()
}()
return nil
}

85
dns/util.go Normal file
View File

@ -0,0 +1,85 @@
package dns
import (
"encoding/json"
"errors"
"time"
"github.com/Dreamacro/clash/common/cache"
"github.com/Dreamacro/clash/log"
yaml "gopkg.in/yaml.v2"
D "github.com/miekg/dns"
)
var (
// EnhancedModeMapping is a mapping for EnhancedMode enum
EnhancedModeMapping = map[string]EnhancedMode{
FAKEIP.String(): FAKEIP,
MAPPING.String(): MAPPING,
}
)
const (
FAKEIP EnhancedMode = iota
MAPPING
)
type EnhancedMode int
// UnmarshalYAML unserialize EnhancedMode with yaml
func (e *EnhancedMode) UnmarshalYAML(unmarshal func(interface{}) error) error {
var tp string
if err := unmarshal(&tp); err != nil {
return err
}
mode, exist := EnhancedModeMapping[tp]
if !exist {
return errors.New("invalid mode")
}
*e = mode
return nil
}
// MarshalYAML serialize EnhancedMode with yaml
func (e EnhancedMode) MarshalYAML() ([]byte, error) {
return yaml.Marshal(e.String())
}
// UnmarshalJSON unserialize EnhancedMode with json
func (e *EnhancedMode) UnmarshalJSON(data []byte) error {
var tp string
json.Unmarshal(data, &tp)
mode, exist := EnhancedModeMapping[tp]
if !exist {
return errors.New("invalid mode")
}
*e = mode
return nil
}
// MarshalJSON serialize EnhancedMode with json
func (e EnhancedMode) MarshalJSON() ([]byte, error) {
return json.Marshal(e.String())
}
func (e EnhancedMode) String() string {
switch e {
case FAKEIP:
return "fakeip"
case MAPPING:
return "redir-host"
default:
return "unknown"
}
}
func putMsgToCache(c *cache.Cache, key string, msg *D.Msg) {
if len(msg.Answer) == 0 {
log.Debugln("[DNS] answer length is zero: %#v", msg)
return
}
ttl := time.Duration(msg.Answer[0].Header().Ttl) * time.Second
c.Put(key, msg, ttl)
}

11
go.mod
View File

@ -1,17 +1,20 @@
module github.com/Dreamacro/clash
require (
github.com/Dreamacro/go-shadowsocks2 v0.1.2-0.20181019110427-0a03f1a25270
github.com/Dreamacro/go-shadowsocks2 v0.1.2
github.com/eapache/queue v1.1.0 // indirect
github.com/go-chi/chi v3.3.3+incompatible
github.com/go-chi/cors v1.0.0
github.com/go-chi/render v1.0.1
github.com/gofrs/uuid v3.1.0+incompatible
github.com/gorilla/websocket v1.4.0
github.com/miekg/dns v1.1.0
github.com/oschwald/geoip2-golang v1.2.1
github.com/oschwald/maxminddb-golang v1.3.0 // indirect
github.com/sirupsen/logrus v1.1.0
golang.org/x/crypto v0.0.0-20181009213950-7c1a557ab941
github.com/sirupsen/logrus v1.2.0
golang.org/x/crypto v0.0.0-20181127143415-eb0de9b17e85
golang.org/x/net v0.0.0-20181108082009-03003ca0c849 // indirect
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f // indirect
gopkg.in/eapache/channels.v1 v1.1.0
gopkg.in/yaml.v2 v2.2.1
gopkg.in/yaml.v2 v2.2.2
)

28
go.sum
View File

@ -1,5 +1,5 @@
github.com/Dreamacro/go-shadowsocks2 v0.1.2-0.20181019110427-0a03f1a25270 h1:ugkI+Yw5ArFnhF8KTbJxyWIyvxMCa8jWyUF+wIAulhM=
github.com/Dreamacro/go-shadowsocks2 v0.1.2-0.20181019110427-0a03f1a25270/go.mod h1:DlkXRxmh5K+99aTPQaVjsZ1fAZNFw42vXGcOjR3Otps=
github.com/Dreamacro/go-shadowsocks2 v0.1.2 h1:8KgWbwAw5PJF+i6F3tI2iW/Em9WDtAuDG4obot8bGLM=
github.com/Dreamacro/go-shadowsocks2 v0.1.2/go.mod h1:J5YbNUiKtaD7EJmQ4O9ruUTY9+IgrflPgm63K1nUE0I=
github.com/aead/chacha20 v0.0.0-20180709150244-8b13a72661da h1:KjTM2ks9d14ZYCvmHS9iAKVt9AyzRSqNU1qabPih5BY=
github.com/aead/chacha20 v0.0.0-20180709150244-8b13a72661da/go.mod h1:eHEWzANqSiWQsof+nXEI9bUVUyV6F53Fp89EuCh2EAA=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@ -16,22 +16,28 @@ github.com/gofrs/uuid v3.1.0+incompatible h1:q2rtkjaKT4YEr6E1kamy0Ha4RtepWlQBedy
github.com/gofrs/uuid v3.1.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe h1:CHRGQ8V7OlCYtwaKPJi3iA7J+YdNKdo8j7nG5IgDhjs=
github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/miekg/dns v1.1.0 h1:yv9O9RJbvVFkvW8PKYqp4x7HQkc5RWwmUY/L8MdUaIg=
github.com/miekg/dns v1.1.0/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
github.com/oschwald/geoip2-golang v1.2.1 h1:3iz+jmeJc6fuCyWeKgtXSXu7+zvkxJbHFXkMT5FVebU=
github.com/oschwald/geoip2-golang v1.2.1/go.mod h1:0LTTzix/Ao1uMvOhAV4iLU0Lz7eCrP94qZWBTDKf0iE=
github.com/oschwald/maxminddb-golang v1.3.0 h1:oTh8IBSj10S5JNlUDg5WjJ1QdBMdeaZIkPEVfESSWgE=
github.com/oschwald/maxminddb-golang v1.3.0/go.mod h1:3jhIUymTJ5VREKyIhWm66LJiQt04F0UCDdodShpjWsY=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/sirupsen/logrus v1.1.0 h1:65VZabgUiV9ktjGM5nTq0+YurgTyX+YI2lSSfDjI+qU=
github.com/sirupsen/logrus v1.1.0/go.mod h1:zrgwTnHtNr00buQ1vSptGe8m1f/BbgsPukg8qsT7A+A=
github.com/sirupsen/logrus v1.2.0 h1:juTguoYk5qI21pwyTXY3B3Y5cOTH3ZUyZCg1v/mihuo=
github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20181009213950-7c1a557ab941 h1:qBTHLajHecfu+xzRI9PqVDcqx7SdHj9d4B+EzSn3tAc=
golang.org/x/crypto v0.0.0-20181009213950-7c1a557ab941/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33 h1:I6FyU15t786LL7oL/hn43zqTuEGr4PN7F4XJ1p4E3Y8=
golang.org/x/crypto v0.0.0-20181127143415-eb0de9b17e85 h1:et7+NAX3lLIk5qUCTA9QelBjGE/NkhzYw/mhnr0s7nI=
golang.org/x/crypto v0.0.0-20181127143415-eb0de9b17e85/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/net v0.0.0-20181108082009-03003ca0c849 h1:FSqE2GGG7wzsYUsWiQ8MZrvEd1EOyU3NCF0AW3Wtltg=
golang.org/x/net v0.0.0-20181108082009-03003ca0c849/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f h1:Bl/8QSvNqXvPGPGXa2z5xUTmV7VDcZyvRZ+QQXkXTZQ=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181005133103-4497e2df6f9e h1:EfdBzeKbFSvOjoIqSZcfS8wp0FBLokGBEs9lz1OtSg0=
golang.org/x/sys v0.0.0-20181005133103-4497e2df6f9e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@ -39,5 +45,5 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/eapache/channels.v1 v1.1.0 h1:5bGAyKKvyCTWjSj7mhefG6Lc68VyN4MH1v8/7OoeeB4=
gopkg.in/eapache/channels.v1 v1.1.0/go.mod h1:BHIBujSvu9yMTrTYbTCjDD43gUhtmaOtTWDe7sTv1js=
gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

19
hub/executor/executor.go
View File

@ -4,6 +4,7 @@ import (
adapters "github.com/Dreamacro/clash/adapters/outbound"
"github.com/Dreamacro/clash/config"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/dns"
"github.com/Dreamacro/clash/log"
P "github.com/Dreamacro/clash/proxy"
T "github.com/Dreamacro/clash/tunnel"
@ -26,6 +27,8 @@ func ApplyConfig(cfg *config.Config, force bool) {
}
updateProxies(cfg.Proxies)
updateRules(cfg.Rules)
updateGeneral(cfg.General)
updateDNS(cfg.DNS)
}
func GetGeneral() *config.General {
@ -40,6 +43,22 @@ func GetGeneral() *config.General {
}
}
func updateDNS(c *config.DNS) {
if c.Enable == false {
T.Instance().SetResolver(nil)
dns.ReCreateServer("", nil)
return
}
r := dns.New(dns.Config{
Main: c.NameServer,
Fallback: c.Fallback,
IPv6: c.IPv6,
EnhancedMode: c.EnhancedMode,
})
T.Instance().SetResolver(r)
dns.ReCreateServer(c.Listen, r)
}
func updateProxies(proxies map[string]C.Proxy) {
tunnel := T.Instance()
oldProxies := tunnel.Proxies()

29
log/level.go
View File

@ -3,18 +3,16 @@ package log
import (
"encoding/json"
"errors"
yaml "gopkg.in/yaml.v2"
)
var (
// LogLevelMapping is a mapping for LogLevel enum
LogLevelMapping = map[string]LogLevel{
"error": ERROR,
"warning": WARNING,
"info": INFO,
"debug": DEBUG,
"silent": SILENT,
ERROR.String(): ERROR,
WARNING.String(): WARNING,
INFO.String(): INFO,
DEBUG.String(): DEBUG,
SILENT.String(): SILENT,
}
)
@ -28,10 +26,10 @@ const (
type LogLevel int
// UnmarshalYAML unserialize Mode with yaml
func (l *LogLevel) UnmarshalYAML(data []byte) error {
// UnmarshalYAML unserialize LogLevel with yaml
func (l *LogLevel) UnmarshalYAML(unmarshal func(interface{}) error) error {
var tp string
yaml.Unmarshal(data, &tp)
unmarshal(&tp)
level, exist := LogLevelMapping[tp]
if !exist {
return errors.New("invalid mode")
@ -40,12 +38,7 @@ func (l *LogLevel) UnmarshalYAML(data []byte) error {
return nil
}
// MarshalYAML serialize Mode with yaml
func (l LogLevel) MarshalYAML() ([]byte, error) {
return yaml.Marshal(l.String())
}
// UnmarshalJSON unserialize Mode with json
// UnmarshalJSON unserialize LogLevel with json
func (l *LogLevel) UnmarshalJSON(data []byte) error {
var tp string
json.Unmarshal(data, &tp)
@ -57,7 +50,7 @@ func (l *LogLevel) UnmarshalJSON(data []byte) error {
return nil
}
// MarshalJSON serialize Mode with json
// MarshalJSON serialize LogLevel with json
func (l LogLevel) MarshalJSON() ([]byte, error) {
return json.Marshal(l.String())
}
@ -75,6 +68,6 @@ func (l LogLevel) String() string {
case SILENT:
return "silent"
default:
return "unknow"
return "unknown"
}
}

8
log/log.go
View File

@ -14,6 +14,10 @@ var (
level = INFO
)
func init() {
log.SetLevel(log.DebugLevel)
}
type Event struct {
LogLevel LogLevel
Payload string
@ -47,6 +51,10 @@ func Debugln(format string, v ...interface{}) {
print(event)
}
func Fatalln(format string, v ...interface{}) {
log.Fatalf(format, v...)
}
func Subscribe() observable.Subscription {
sub, _ := source.Subscribe()
return sub

10
proxy/http/server.go
View File

@ -14,18 +14,18 @@ var (
tun = tunnel.Instance()
)
type httpListener struct {
type HttpListener struct {
net.Listener
address string
closed bool
}
func NewHttpProxy(addr string) (*httpListener, error) {
func NewHttpProxy(addr string) (*HttpListener, error) {
l, err := net.Listen("tcp", addr)
if err != nil {
return nil, err
}
hl := &httpListener{l, addr, false}
hl := &HttpListener{l, addr, false}
go func() {
log.Infoln("HTTP proxy listening at: %s", addr)
@ -44,12 +44,12 @@ func NewHttpProxy(addr string) (*httpListener, error) {
return hl, nil
}
func (l *httpListener) Close() {
func (l *HttpListener) Close() {
l.closed = true
l.Listener.Close()
}
func (l *httpListener) Address() string {
func (l *HttpListener) Address() string {
return l.address
}

6
proxy/listener.go
View File

@ -13,9 +13,9 @@ import (
var (
allowLan = false
socksListener listener
httpListener listener
redirListener listener
socksListener *socks.SockListener
httpListener *http.HttpListener
redirListener *redir.RedirListener
)
type listener interface {

13
proxy/redir/tcp.go
View File

@ -4,6 +4,7 @@ import (
"net"
"github.com/Dreamacro/clash/adapters/inbound"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/log"
"github.com/Dreamacro/clash/tunnel"
)
@ -12,18 +13,18 @@ var (
tun = tunnel.Instance()
)
type redirListener struct {
type RedirListener struct {
net.Listener
address string
closed bool
}
func NewRedirProxy(addr string) (*redirListener, error) {
func NewRedirProxy(addr string) (*RedirListener, error) {
l, err := net.Listen("tcp", addr)
if err != nil {
return nil, err
}
rl := &redirListener{l, addr, false}
rl := &RedirListener{l, addr, false}
go func() {
log.Infoln("Redir proxy listening at: %s", addr)
@ -42,12 +43,12 @@ func NewRedirProxy(addr string) (*redirListener, error) {
return rl, nil
}
func (l *redirListener) Close() {
func (l *RedirListener) Close() {
l.closed = true
l.Listener.Close()
}
func (l *redirListener) Address() string {
func (l *RedirListener) Address() string {
return l.address
}
@ -58,5 +59,5 @@ func handleRedir(conn net.Conn) {
return
}
conn.(*net.TCPConn).SetKeepAlive(true)
tun.Add(adapters.NewSocket(target, conn))
tun.Add(adapters.NewSocket(target, conn, C.REDIR))
}

13
proxy/socks/tcp.go
View File

@ -4,6 +4,7 @@ import (
"net"
"github.com/Dreamacro/clash/adapters/inbound"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/log"
"github.com/Dreamacro/clash/tunnel"
@ -14,19 +15,19 @@ var (
tun = tunnel.Instance()
)
type sockListener struct {
type SockListener struct {
net.Listener
address string
closed bool
}
func NewSocksProxy(addr string) (*sockListener, error) {
func NewSocksProxy(addr string) (*SockListener, error) {
l, err := net.Listen("tcp", addr)
if err != nil {
return nil, err
}
sl := &sockListener{l, addr, false}
sl := &SockListener{l, addr, false}
go func() {
log.Infoln("SOCKS proxy listening at: %s", addr)
for {
@ -44,12 +45,12 @@ func NewSocksProxy(addr string) (*sockListener, error) {
return sl, nil
}
func (l *sockListener) Close() {
func (l *SockListener) Close() {
l.closed = true
l.Listener.Close()
}
func (l *sockListener) Address() string {
func (l *SockListener) Address() string {
return l.address
}
@ -60,5 +61,5 @@ func handleSocks(conn net.Conn) {
return
}
conn.(*net.TCPConn).SetKeepAlive(true)
tun.Add(adapters.NewSocket(target, conn))
tun.Add(adapters.NewSocket(target, conn, C.SOCKS))
}

18
tunnel/mode.go
View File

@ -10,9 +10,9 @@ type Mode int
var (
// ModeMapping is a mapping for Mode enum
ModeMapping = map[string]Mode{
"Global": Global,
"Rule": Rule,
"Direct": Direct,
Global.String(): Global,
Rule.String(): Rule,
Direct.String(): Direct,
}
)
@ -34,6 +34,18 @@ func (m *Mode) UnmarshalJSON(data []byte) error {
return nil
}
// UnmarshalYAML unserialize Mode with yaml
func (m *Mode) UnmarshalYAML(unmarshal func(interface{}) error) error {
var tp string
unmarshal(&tp)
mode, exist := ModeMapping[tp]
if !exist {
return errors.New("invalid mode")
}
*m = mode
return nil
}
// MarshalJSON serialize Mode
func (m Mode) MarshalJSON() ([]byte, error) {
return json.Marshal(m.String())

39
tunnel/tunnel.go
View File

@ -1,11 +1,13 @@
package tunnel
import (
"net"
"sync"
"time"
InboundAdapter "github.com/Dreamacro/clash/adapters/inbound"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/dns"
"github.com/Dreamacro/clash/log"
"gopkg.in/eapache/channels.v1"
@ -23,6 +25,7 @@ type Tunnel struct {
proxies map[string]C.Proxy
configLock *sync.RWMutex
traffic *C.Traffic
resolver *dns.Resolver
// Outbound Rule
mode Mode
@ -72,6 +75,11 @@ func (t *Tunnel) SetMode(mode Mode) {
t.mode = mode
}
// SetResolver change the resolver of tunnel
func (t *Tunnel) SetResolver(resolver *dns.Resolver) {
t.resolver = resolver
}
func (t *Tunnel) process() {
queue := t.queue.Out()
for {
@ -81,10 +89,41 @@ func (t *Tunnel) process() {
}
}
func (t *Tunnel) resolveIP(host string) (net.IP, error) {
if t.resolver == nil {
ipAddr, err := net.ResolveIPAddr("ip", host)
if err != nil {
return nil, err
}
return ipAddr.IP, nil
}
return t.resolver.ResolveIP(host)
}
func (t *Tunnel) handleConn(localConn C.ServerAdapter) {
defer localConn.Close()
metadata := localConn.Metadata()
if metadata.Source == C.REDIR && t.resolver != nil {
host, exist := t.resolver.IPToHost(*metadata.IP)
if exist {
metadata.Host = host
metadata.AddrType = C.AtypDomainName
}
} else if metadata.IP == nil && metadata.AddrType == C.AtypDomainName {
ip, err := t.resolveIP(metadata.Host)
if err != nil {
log.Debugln("[DNS] resolve %s error: %s", metadata.Host, err.Error())
} else {
log.Debugln("[DNS] %s --> %s", metadata.Host, ip.String())
metadata.IP = &ip
}
} else {
log.Debugln("[DNS] unknown%#v", metadata)
}
var proxy C.Proxy
switch t.mode {
case Direct: