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chore: shadowtls don't depend on trojan's code

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This commit is contained in:
wwqgtxx 2023-01-11 10:19:30 +08:00
parent 0c9a23a53c
commit 0069513780
2 changed files with 58 additions and 31 deletions
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33
adapter/outbound/shadowsocks.go
View file

@ -2,6 +2,7 @@ package outbound
import (
"context"
"crypto/tls"
"errors"
"fmt"
"net"
@ -9,11 +10,11 @@ import (
"github.com/Dreamacro/clash/common/structure"
"github.com/Dreamacro/clash/component/dialer"
tlsC "github.com/Dreamacro/clash/component/tls"
C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/transport/shadowtls"
obfs "github.com/Dreamacro/clash/transport/simple-obfs"
"github.com/Dreamacro/clash/transport/socks5"
"github.com/Dreamacro/clash/transport/trojan"
v2rayObfs "github.com/Dreamacro/clash/transport/v2ray-plugin"
shadowsocks "github.com/metacubex/sing-shadowsocks"
@ -33,7 +34,7 @@ type ShadowSocks struct {
obfsOption *simpleObfsOption
v2rayOption *v2rayObfs.Option
shadowTLSOption *shadowTLSOption
tlsConnector *trojan.Trojan
tlsConfig *tls.Config
}
type ShadowSocksOption struct {
@ -66,8 +67,10 @@ type v2rayObfsOption struct {
}
type shadowTLSOption struct {
Password string `obfs:"password"`
Host string `obfs:"host"`
Password string `obfs:"password"`
Host string `obfs:"host"`
Fingerprint string `obfs:"fingerprint,omitempty"`
SkipCertVerify bool `obfs:"skip-cert-verify,omitempty"`
}
// StreamConn implements C.ProxyAdapter
@ -85,10 +88,7 @@ func (ss *ShadowSocks) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, e
return nil, fmt.Errorf("%s connect error: %w", ss.addr, err)
}
case shadowtls.Mode:
if ss.tlsConnector == nil {
ss.tlsConnector = trojan.New(&trojan.Option{ServerName: ss.shadowTLSOption.Host, SkipCertVerify: false})
}
c = shadowtls.NewShadowTls(c, ss.shadowTLSOption.Password, ss.tlsConnector)
c = shadowtls.NewShadowTLS(c, ss.shadowTLSOption.Password, ss.tlsConfig)
}
if metadata.NetWork == C.UDP && ss.option.UDPOverTCP {
return ss.method.DialConn(c, M.ParseSocksaddr(uot.UOTMagicAddress+":443"))
@ -172,6 +172,7 @@ func NewShadowSocks(option ShadowSocksOption) (*ShadowSocks, error) {
var v2rayOption *v2rayObfs.Option
var obfsOption *simpleObfsOption
var shadowTLSOpt *shadowTLSOption
var tlsConfig *tls.Config
obfsMode := ""
decoder := structure.NewDecoder(structure.Option{TagName: "obfs", WeaklyTypedInput: true})
@ -213,6 +214,21 @@ func NewShadowSocks(option ShadowSocksOption) (*ShadowSocks, error) {
if err := decoder.Decode(option.PluginOpts, shadowTLSOpt); err != nil {
return nil, fmt.Errorf("ss %s initialize shadow-tls-plugin error: %w", addr, err)
}
tlsConfig = &tls.Config{
NextProtos: shadowtls.DefaultALPN,
MinVersion: tls.VersionTLS12,
InsecureSkipVerify: shadowTLSOpt.SkipCertVerify,
ServerName: shadowTLSOpt.Host,
}
if len(shadowTLSOpt.Fingerprint) == 0 {
tlsConfig = tlsC.GetGlobalFingerprintTLCConfig(tlsConfig)
} else {
if tlsConfig, err = tlsC.GetSpecifiedFingerprintTLSConfig(tlsConfig, shadowTLSOpt.Fingerprint); err != nil {
return nil, err
}
}
}
return &ShadowSocks{
@ -232,6 +248,7 @@ func NewShadowSocks(option ShadowSocksOption) (*ShadowSocks, error) {
v2rayOption: v2rayOption,
obfsOption: obfsOption,
shadowTLSOption: shadowTLSOpt,
tlsConfig: tlsConfig,
}, nil
}

56
transport/shadowtls/shadowtls.go
View file

@ -1,8 +1,10 @@
package shadowtls
import (
"context"
"crypto/hmac"
"crypto/sha1"
"crypto/tls"
"encoding/binary"
"fmt"
"hash"
@ -10,7 +12,7 @@ import (
"net"
"github.com/Dreamacro/clash/common/pool"
"github.com/Dreamacro/clash/transport/trojan"
C "github.com/Dreamacro/clash/constant"
)
const (
@ -20,13 +22,17 @@ const (
tlsHeaderLen int = 5
)
// TLSObfs is shadowsocks tls simple-obfs implementation
type ShadowTls struct {
var (
DefaultALPN = []string{"h2", "http/1.1"}
)
// ShadowTLS is shadow-tls implementation
type ShadowTLS struct {
net.Conn
password []byte
remain int
firstRequest bool
tlsConnector *trojan.Trojan
tlsConfig *tls.Config
}
type HashedConn struct {
@ -47,9 +53,9 @@ func (h HashedConn) Read(b []byte) (n int, err error) {
return
}
func (to *ShadowTls) read(b []byte) (int, error) {
func (s *ShadowTLS) read(b []byte) (int, error) {
buf := pool.Get(tlsHeaderLen)
_, err := io.ReadFull(to.Conn, buf)
_, err := io.ReadFull(s.Conn, buf)
if err != nil {
return 0, fmt.Errorf("shadowtls read failed %w", err)
}
@ -60,36 +66,36 @@ func (to *ShadowTls) read(b []byte) (int, error) {
pool.Put(buf)
if length > len(b) {
n, err := to.Conn.Read(b)
n, err := s.Conn.Read(b)
if err != nil {
return n, err
}
to.remain = length - n
s.remain = length - n
return n, nil
}
return io.ReadFull(to.Conn, b[:length])
return io.ReadFull(s.Conn, b[:length])
}
func (to *ShadowTls) Read(b []byte) (int, error) {
if to.remain > 0 {
length := to.remain
func (s *ShadowTLS) Read(b []byte) (int, error) {
if s.remain > 0 {
length := s.remain
if length > len(b) {
length = len(b)
}
n, err := io.ReadFull(to.Conn, b[:length])
n, err := io.ReadFull(s.Conn, b[:length])
if err != nil {
return n, fmt.Errorf("shadowtls Read failed with %w", err)
}
to.remain -= n
s.remain -= n
return n, nil
}
return to.read(b)
return s.read(b)
}
func (to *ShadowTls) Write(b []byte) (int, error) {
func (s *ShadowTLS) Write(b []byte) (int, error) {
length := len(b)
for i := 0; i < length; i += chunkSize {
end := i + chunkSize
@ -97,7 +103,7 @@ func (to *ShadowTls) Write(b []byte) (int, error) {
end = length
}
n, err := to.write(b[i:end])
n, err := s.write(b[i:end])
if err != nil {
return n, fmt.Errorf("shadowtls Write failed with %w, i=%d, end=%d, n=%d", err, i, end, n)
}
@ -105,11 +111,15 @@ func (to *ShadowTls) Write(b []byte) (int, error) {
return length, nil
}
func (s *ShadowTls) write(b []byte) (int, error) {
func (s *ShadowTLS) write(b []byte) (int, error) {
var hashVal []byte
if s.firstRequest {
hashedConn := newHashedStream(s.Conn, s.password)
if _, err := s.tlsConnector.StreamConn(hashedConn); err != nil {
tlsConn := tls.Client(hashedConn, s.tlsConfig)
// fix tls handshake not timeout
ctx, cancel := context.WithTimeout(context.Background(), C.DefaultTLSTimeout)
defer cancel()
if err := tlsConn.HandshakeContext(ctx); err != nil {
return 0, fmt.Errorf("tls connect failed with %w", err)
}
hashVal = hashedConn.hasher.Sum(nil)[:hashLen]
@ -131,12 +141,12 @@ func (s *ShadowTls) write(b []byte) (int, error) {
return len(b), nil
}
// NewShadowTls return a ShadowTls
func NewShadowTls(conn net.Conn, password string, tlsConnector *trojan.Trojan) net.Conn {
return &ShadowTls{
// NewShadowTLS return a ShadowTLS
func NewShadowTLS(conn net.Conn, password string, tlsConfig *tls.Config) net.Conn {
return &ShadowTLS{
Conn: conn,
password: []byte(password),
firstRequest: true,
tlsConnector: tlsConnector,
tlsConfig: tlsConfig,
}
}