mirror of
https://github.com/XTLS/Xray-core.git
synced 2024-11-14 12:43:18 +00:00
109 lines
3 KiB
Go
109 lines
3 KiB
Go
package tls
|
|
|
|
import (
|
|
"context"
|
|
gotls "crypto/tls"
|
|
"net"
|
|
"net/url"
|
|
"strconv"
|
|
|
|
utls "github.com/refraction-networking/utls"
|
|
"google.golang.org/grpc/credentials"
|
|
)
|
|
|
|
// grpcUtlsInfo contains the auth information for a TLS authenticated connection.
|
|
// It implements the AuthInfo interface.
|
|
type grpcUtlsInfo struct {
|
|
State utls.ConnectionState
|
|
credentials.CommonAuthInfo
|
|
// This API is experimental.
|
|
SPIFFEID *url.URL
|
|
}
|
|
|
|
// AuthType returns the type of TLSInfo as a string.
|
|
func (t grpcUtlsInfo) AuthType() string {
|
|
return "utls"
|
|
}
|
|
|
|
// GetSecurityValue returns security info requested by channelz.
|
|
func (t grpcUtlsInfo) GetSecurityValue() credentials.ChannelzSecurityValue {
|
|
v := &credentials.TLSChannelzSecurityValue{
|
|
StandardName: "0x" + strconv.FormatUint(uint64(t.State.CipherSuite), 16),
|
|
}
|
|
// Currently there's no way to get LocalCertificate info from tls package.
|
|
if len(t.State.PeerCertificates) > 0 {
|
|
v.RemoteCertificate = t.State.PeerCertificates[0].Raw
|
|
}
|
|
return v
|
|
}
|
|
|
|
// grpcUtls is the credentials required for authenticating a connection using TLS.
|
|
type grpcUtls struct {
|
|
config *gotls.Config
|
|
fingerprint *utls.ClientHelloID
|
|
}
|
|
|
|
func (c grpcUtls) Info() credentials.ProtocolInfo {
|
|
return credentials.ProtocolInfo{
|
|
SecurityProtocol: "tls",
|
|
SecurityVersion: "1.2",
|
|
ServerName: c.config.ServerName,
|
|
}
|
|
}
|
|
|
|
func (c *grpcUtls) ClientHandshake(ctx context.Context, authority string, rawConn net.Conn) (_ net.Conn, _ credentials.AuthInfo, err error) {
|
|
// use local cfg to avoid clobbering ServerName if using multiple endpoints
|
|
cfg := c.config.Clone()
|
|
if cfg.ServerName == "" {
|
|
serverName, _, err := net.SplitHostPort(authority)
|
|
if err != nil {
|
|
// If the authority had no host port or if the authority cannot be parsed, use it as-is.
|
|
serverName = authority
|
|
}
|
|
cfg.ServerName = serverName
|
|
}
|
|
conn := UClient(rawConn, cfg, c.fingerprint).(*UConn)
|
|
errChannel := make(chan error, 1)
|
|
go func() {
|
|
errChannel <- conn.Handshake()
|
|
close(errChannel)
|
|
}()
|
|
select {
|
|
case err := <-errChannel:
|
|
if err != nil {
|
|
conn.Close()
|
|
return nil, nil, err
|
|
}
|
|
case <-ctx.Done():
|
|
conn.Close()
|
|
return nil, nil, ctx.Err()
|
|
}
|
|
tlsInfo := grpcUtlsInfo{
|
|
State: conn.ConnectionState(),
|
|
CommonAuthInfo: credentials.CommonAuthInfo{
|
|
SecurityLevel: credentials.PrivacyAndIntegrity,
|
|
},
|
|
}
|
|
return conn, tlsInfo, nil
|
|
}
|
|
|
|
// ServerHandshake will always panic. We don't support running uTLS as server.
|
|
func (c *grpcUtls) ServerHandshake(net.Conn) (net.Conn, credentials.AuthInfo, error) {
|
|
panic("not available!")
|
|
}
|
|
|
|
func (c *grpcUtls) Clone() credentials.TransportCredentials {
|
|
return NewGrpcUtls(c.config, c.fingerprint)
|
|
}
|
|
|
|
func (c *grpcUtls) OverrideServerName(serverNameOverride string) error {
|
|
c.config.ServerName = serverNameOverride
|
|
return nil
|
|
}
|
|
|
|
// NewGrpcUtls uses c to construct a TransportCredentials based on uTLS.
|
|
func NewGrpcUtls(c *gotls.Config, fingerprint *utls.ClientHelloID) credentials.TransportCredentials {
|
|
tc := &grpcUtls{c.Clone(), fingerprint}
|
|
return tc
|
|
}
|