func hookBefore(c *cli.Context) error {
// logrus.SetOutput(os.Stderr)
if c.Bool("verbose") {
logrus.SetLevel(logrus.DebugLevel)
} else {
logrus.SetLevel(logrus.InfoLevel)
}
return nil
}
// Action is the default cli action to execute
func Action(c *cli.Context) {
// Initialize the SSH server
server, err := ssh2docker.NewServer()
if err != nil {
logrus.Fatalf("Cannot create server: %v", err)
}
// Restrict list of allowed images
if c.String("allowed-images") != "" {
server.AllowedImages = strings.Split(c.String("allowed-images"), ",")
}
// Configure server
server.DefaultShell = c.String("shell")
server.DockerRunArgs = strings.Split(c.String("docker-run-args"), " ")
server.NoJoin = c.Bool("no-join")
server.CleanOnStartup = c.Bool("clean-on-startup")
server.PasswordAuthScript = c.String("password-auth-script")
server.PublicKeyAuthScript = c.String("publickey-auth-script")
server.LocalUser = c.String("local-user")
server.Banner = c.String("banner")
// Register the SSH host key
hostKey := c.String("host-key")
switch hostKey {
case "built-in":
hostKey = DefaultHostKey
case "system":
hostKey = "/etc/ssh/ssh_host_rsa_key"
}
err = server.AddHostKey(hostKey)
if err != nil {
logrus.Fatalf("Cannot add host key: %v", err)
}
// Bind TCP socket
bindAddress := c.String("bind")
listener, err := net.Listen("tcp", bindAddress)
if err != nil {
logrus.Fatalf("Failed to start listener on %q: %v", bindAddress, err)
}
logrus.Infof("Listening on %q", bindAddress)
// Initialize server
if err = server.Init(); err != nil {
logrus.Fatalf("Failed to initialize the server: %v", err)
}
// Accept new clients
for {
conn, err := listener.Accept()
if err != nil {
logrus.Error("Accept failed: %v", err)
continue
}
go server.Handle(conn)
}
}