Example #1
0
func prepareHostControlPath(host, gateway *config.Host) error {
	controlPathDir := path.Dir(os.ExpandEnv(strings.Replace(host.ControlPath, "~", "$HOME", -1)))
	gatewayControlPath := path.Join(controlPathDir, gateway.Name())
	if config.BoolVal(host.ControlMasterMkdir) {
		return os.MkdirAll(gatewayControlPath, 0700)
	}
	return nil
}
Example #2
0
func proxyGo(host *config.Host) error {
	if host.HostName == "" {
		host.HostName = host.Name()
	}

	if len(host.ResolveNameservers) > 0 {
		Logger.Debugf("Resolving host: '%s' using nameservers %s", host.HostName, host.ResolveNameservers)
		// FIXME: resolve using custom dns server
		results, err := net.LookupAddr(host.HostName)
		if err != nil {
			return err
		}
		if len(results) > 0 {
			host.HostName = results[0]
		}
		Logger.Debugf("Resolved host is: %s", host.HostName)
	}
	if host.ResolveCommand != "" {
		command := commandApplyHost(host.ResolveCommand, host)
		Logger.Debugf("Resolving host: %q using command: %q", host.HostName, command)

		args, err := shlex.Split(command)
		if err != nil {
			return err
		}

		out, err := exec.Command(args[0], args[1:]...).Output()
		if err != nil {
			return err
		}

		host.HostName = strings.TrimSpace(fmt.Sprintf("%s", out))
		Logger.Debugf("Resolved host is: %s", host.HostName)
	}

	Logger.Debugf("Connecting to %s:%d", host.HostName, host.Port)
	conn, err := net.Dial("tcp", fmt.Sprintf("%s:%d", host.HostName, host.Port))
	if err != nil {
		return err
	}
	defer conn.Close()

	Logger.Debugf("Connected to %s:%d", host.HostName, host.Port)

	// Create Stdio pipes
	c1 := readAndWrite(conn, os.Stdout)
	c2 := readAndWrite(os.Stdin, conn)

	select {
	case err = <-c1:
	case err = <-c2:
	}
	if err != nil {
		return err
	}

	return nil
}
Example #3
0
func hostPrepare(host *config.Host) error {
	if host.HostName == "" {
		host.HostName = host.Name()
	}

	if len(host.ResolveNameservers) > 0 {
		Logger.Debugf("Resolving host: '%s' using nameservers %s", host.HostName, host.ResolveNameservers)
		// FIXME: resolve using custom dns server
		results, err := net.LookupAddr(host.HostName)
		if err != nil {
			return err
		}
		if len(results) > 0 {
			host.HostName = results[0]
		}
		Logger.Debugf("Resolved host is: %s", host.HostName)
	}

	if host.ResolveCommand != "" {
		command := host.ExpandString(host.ResolveCommand)
		Logger.Debugf("Resolving host: %q using command: %q", host.HostName, command)

		args, err := shlex.Split(command)
		if err != nil {
			return err
		}

		cmd := exec.Command(args[0], args[1:]...)
		var stdout bytes.Buffer
		var stderr bytes.Buffer
		cmd.Stdout = &stdout
		cmd.Stderr = &stderr
		if err := cmd.Run(); err != nil {
			Logger.Errorf("ResolveCommand failed: %s", stderr.String())
			return err
		}

		host.HostName = strings.TrimSpace(fmt.Sprintf("%s", stdout.String()))
		Logger.Debugf("Resolved host is: %s", host.HostName)
	}
	return nil
}
Example #4
0
func hostPrepare(host *config.Host) error {
	if host.HostName == "" {
		host.HostName = host.Name()
	}

	if len(host.ResolveNameservers) > 0 {
		Logger.Debugf("Resolving host: '%s' using nameservers %s", host.HostName, host.ResolveNameservers)
		// FIXME: resolve using custom dns server
		results, err := net.LookupAddr(host.HostName)
		if err != nil {
			return err
		}
		if len(results) > 0 {
			host.HostName = results[0]
		}
		Logger.Debugf("Resolved host is: %s", host.HostName)
	}

	if host.ResolveCommand != "" {
		command := host.ExpandString(host.ResolveCommand)
		Logger.Debugf("Resolving host: %q using command: %q", host.HostName, command)

		args, err := shlex.Split(command)
		if err != nil {
			return err
		}

		out, err := exec.Command(args[0], args[1:]...).Output()
		if err != nil {
			return err
		}

		host.HostName = strings.TrimSpace(fmt.Sprintf("%s", out))
		Logger.Debugf("Resolved host is: %s", host.HostName)
	}
	return nil
}
Example #5
0
func commandApplyHost(command string, host *config.Host) string {
	command = strings.Replace(command, "%name", host.Name(), -1)
	command = strings.Replace(command, "%h", host.HostName, -1)
	command = strings.Replace(command, "%p", fmt.Sprintf("%d", host.Port), -1)
	return command
}