// newSSH2Server constructs a ServerTransport based on HTTP2. ConnectionError is
// returned if something goes wrong.
func newSSH2Server(conn net.Conn, maxStreams uint32) (_ ServerTransport, err error) {
logrus.SetLevel(logrus.DebugLevel)
logrus.Debugln("newSSH2Server")
keyAuthCallback := func(conn ssh.ConnMetadata, key ssh.PublicKey) (*ssh.Permissions, error) {
logrus.Debugln("newSSH2Server -- user public key: ", hex.EncodeToString(key.Marshal())[:64]+"...")
return &ssh.Permissions{}, nil
}
config := &ssh.ServerConfig{
PublicKeyCallback: keyAuthCallback,
}
// get or create host key for ssh server
appPath, err := osext.Executable()
if err != nil {
return nil, err
}
keyPath := filepath.Join(filepath.Dir(appPath), "hostKey.pem")
hostKey, err := sshutil.KeyLoader{Path: keyPath, Flags: sshutil.Create + sshutil.Save + sshutil.RSA2048}.Load()
if err != nil {
return nil, err
}
config.AddHostKey(hostKey)
t := &ssh2Server{
conn: conn,
writableChan: make(chan int, 1),
channelsByStreamId: make(map[uint32]*ssh.Channel),
}
t.sshServerConn, t.newChans, t.globalReqs, err = ssh.NewServerConn(conn, config)
if err != nil {
logrus.Debugln("newSSH2Server -- Failed to hanshake:", err.Error())
return nil, err
} else {
logrus.Debugln("newSSH2Server -- hanshake OK")
}
t.writableChan <- 0
return t, nil
}
