Add MTProxy, MASQUE, VPN, Link parser. Update AmneziaWG. Remove Tunneling

common/tls/masque_client.go

@@ -0,0 +1,74 @@
+package tls
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"crypto/tls"
+	"crypto/x509"
+	"time"
+
+	"github.com/sagernet/quic-go/http3"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/logger"
+)
+
+func NewMASQUEClient(ctx context.Context, logger logger.ContextLogger, serverName string, cert [][]byte, privateKey *ecdsa.PrivateKey, peerPublicKey *ecdsa.PublicKey, options option.MASQUEOutboundTLSOptions) (Config, error) {
+	var tlsConfig tls.Config
+	tlsConfig.ServerName = serverName
+	tlsConfig.InsecureSkipVerify = true
+	tlsConfig.NextProtos = []string{http3.NextProtoH3}
+	tlsConfig.Certificates = []tls.Certificate{
+		{
+			Certificate: cert,
+			PrivateKey:  privateKey,
+		},
+	}
+	if options.CipherSuites != nil {
+	find:
+		for _, cipherSuite := range options.CipherSuites {
+			for _, tlsCipherSuite := range tls.CipherSuites() {
+				if cipherSuite == tlsCipherSuite.Name {
+					tlsConfig.CipherSuites = append(tlsConfig.CipherSuites, tlsCipherSuite.ID)
+					continue find
+				}
+			}
+			return nil, E.New("unknown cipher_suite: ", cipherSuite)
+		}
+	}
+	for _, curve := range options.CurvePreferences {
+		tlsConfig.CurvePreferences = append(tlsConfig.CurvePreferences, tls.CurveID(curve))
+	}
+	if !options.Insecure {
+		tlsConfig.VerifyPeerCertificate = func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
+			if len(rawCerts) == 0 {
+				return nil
+			}
+			cert, err := x509.ParseCertificate(rawCerts[0])
+			if err != nil {
+				return err
+			}
+			if _, ok := cert.PublicKey.(*ecdsa.PublicKey); !ok {
+				return x509.ErrUnsupportedAlgorithm
+			}
+			if !cert.PublicKey.(*ecdsa.PublicKey).Equal(peerPublicKey) {
+				return x509.CertificateInvalidError{Cert: cert, Reason: 10, Detail: "remote endpoint has a different public key than what we trust in config.json"}
+			}
+			return nil
+		}
+	}
+	var config Config = &STDClientConfig{ctx, &tlsConfig, options.Fragment, time.Duration(options.FragmentFallbackDelay), options.RecordFragment}
+	if options.KernelRx || options.KernelTx {
+		if !C.IsLinux {
+			return nil, E.New("kTLS is only supported on Linux")
+		}
+		config = &KTLSClientConfig{
+			Config:   config,
+			logger:   logger,
+			kernelTx: options.KernelTx,
+			kernelRx: options.KernelRx,
+		}
+	}
+	return config, nil
+}