Golang ssh.FileSigner函數代碼示例

func (c *SSHConfig) Prepare(ctx *interpolate.Context) []error {
	if c.SSHPort == 0 {
		c.SSHPort = 22
	}

	if c.RawSSHWaitTimeout == "" {
		c.RawSSHWaitTimeout = "20m"
	}

	var errs []error
	if c.SSHKeyPath != "" {
		if _, err := os.Stat(c.SSHKeyPath); err != nil {
			errs = append(errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		} else if _, err := commonssh.FileSigner(c.SSHKeyPath); err != nil {
			errs = append(errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		}
	}

	if c.SSHUser == "" {
		errs = append(errs, errors.New("An ssh_username must be specified."))
	}

	var err error
	c.SSHWaitTimeout, err = time.ParseDuration(c.RawSSHWaitTimeout)
	if err != nil {
		errs = append(errs, fmt.Errorf("Failed parsing ssh_wait_timeout: %s", err))
	}

	return errs
}

func (d *ESX5Driver) connect() error {
	address := fmt.Sprintf("%s:%d", d.Host, d.Port)

	auth := []gossh.AuthMethod{
		gossh.Password(d.Password),
		gossh.KeyboardInteractive(
			ssh.PasswordKeyboardInteractive(d.Password)),
	}

	if d.PrivateKey != "" {
		signer, err := commonssh.FileSigner(d.PrivateKey)
		if err != nil {
			return err
		}

		auth = append(auth, gossh.PublicKeys(signer))
	}

	sshConfig := &ssh.Config{
		Connection: ssh.ConnectFunc("tcp", address),
		SSHConfig: &gossh.ClientConfig{
			User: d.Username,
			Auth: auth,
		},
	}

	comm, err := ssh.New(address, sshConfig)
	if err != nil {
		return err
	}

	d.comm = comm
	return nil
}

func (c *SSHConfig) Prepare(t *packer.ConfigTemplate) []error {
	if c.SSHHostPortMin == 0 {
		c.SSHHostPortMin = 2222
	}

	if c.SSHHostPortMax == 0 {
		c.SSHHostPortMax = 4444
	}

	if c.SSHPort == 0 {
		c.SSHPort = 22
	}

	if c.RawSSHWaitTimeout == "" {
		c.RawSSHWaitTimeout = "20m"
	}

	templates := map[string]*string{
		"ssh_key_path":     &c.SSHKeyPath,
		"ssh_password":     &c.SSHPassword,
		"ssh_username":     &c.SSHUser,
		"ssh_wait_timeout": &c.RawSSHWaitTimeout,
	}

	errs := make([]error, 0)
	for n, ptr := range templates {
		var err error
		*ptr, err = t.Process(*ptr, nil)
		if err != nil {
			errs = append(errs, fmt.Errorf("Error processing %s: %s", n, err))
		}
	}

	if c.SSHKeyPath != "" {
		if _, err := os.Stat(c.SSHKeyPath); err != nil {
			errs = append(errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		} else if _, err := commonssh.FileSigner(c.SSHKeyPath); err != nil {
			errs = append(errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		}
	}

	if c.SSHHostPortMin > c.SSHHostPortMax {
		errs = append(errs,
			errors.New("ssh_host_port_min must be less than ssh_host_port_max"))
	}

	if c.SSHUser == "" {
		errs = append(errs, errors.New("An ssh_username must be specified."))
	}

	var err error
	c.SSHWaitTimeout, err = time.ParseDuration(c.RawSSHWaitTimeout)
	if err != nil {
		errs = append(errs, fmt.Errorf("Failed parsing ssh_wait_timeout: %s", err))
	}

	return errs
}

func SSHConfig(state multistep.StateBag) (*gossh.ClientConfig, error) {
	config := state.Get("commonconfig").(CommonConfig)
	auth := []gossh.AuthMethod{
		gossh.Password(config.SSHPassword),
		gossh.KeyboardInteractive(
			ssh.PasswordKeyboardInteractive(config.SSHPassword)),
	}

	if config.SSHKeyPath != "" {
		signer, err := commonssh.FileSigner(config.SSHKeyPath)
		if err != nil {
			return nil, err
		}

		auth = append(auth, gossh.PublicKeys(signer))
	}

	return &gossh.ClientConfig{
		User: config.SSHUser,
		Auth: auth,
	}, nil
}

func sshBastionConfig(config *Config) (*gossh.ClientConfig, error) {
	auth := make([]gossh.AuthMethod, 0, 2)
	if config.SSHBastionPassword != "" {
		auth = append(auth,
			gossh.Password(config.SSHBastionPassword),
			gossh.KeyboardInteractive(
				ssh.PasswordKeyboardInteractive(config.SSHBastionPassword)))
	}

	if config.SSHBastionPrivateKey != "" {
		signer, err := commonssh.FileSigner(config.SSHBastionPrivateKey)
		if err != nil {
			return nil, err
		}

		auth = append(auth, gossh.PublicKeys(signer))
	}

	return &gossh.ClientConfig{
		User: config.SSHBastionUsername,
		Auth: auth,
	}, nil
}

func SSHConfigFunc(config SSHConfig) func(multistep.StateBag) (*gossh.ClientConfig, error) {
	return func(state multistep.StateBag) (*gossh.ClientConfig, error) {
		auth := []gossh.AuthMethod{
			gossh.Password(config.Comm.SSHPassword),
			gossh.KeyboardInteractive(
				ssh.PasswordKeyboardInteractive(config.Comm.SSHPassword)),
		}

		if config.SSHKeyPath != "" {
			signer, err := commonssh.FileSigner(config.Comm.SSHPrivateKey)
			if err != nil {
				return nil, err
			}

			auth = append(auth, gossh.PublicKeys(signer))
		}

		return &gossh.ClientConfig{
			User: config.Comm.SSHUsername,
			Auth: auth,
		}, nil
	}
}

//.........這裏部分代碼省略.........
				errs = packer.MultiErrorAppend(
					errs,
					fmt.Errorf("Unsupported checksum type: %s", b.config.ISOChecksumType))
			}
		}
	}

	if b.config.RawSingleISOUrl == "" && len(b.config.ISOUrls) == 0 {
		errs = packer.MultiErrorAppend(
			errs, errors.New("One of iso_url or iso_urls must be specified."))
	} else if b.config.RawSingleISOUrl != "" && len(b.config.ISOUrls) > 0 {
		errs = packer.MultiErrorAppend(
			errs, errors.New("Only one of iso_url or iso_urls may be specified."))
	} else if b.config.RawSingleISOUrl != "" {
		b.config.ISOUrls = []string{b.config.RawSingleISOUrl}
	}

	for i, url := range b.config.ISOUrls {
		b.config.ISOUrls[i], err = common.DownloadableURL(url)
		if err != nil {
			errs = packer.MultiErrorAppend(
				errs, fmt.Errorf("Failed to parse iso_url %d: %s", i+1, err))
		}
	}

	if !b.config.PackerForce {
		if _, err := os.Stat(b.config.OutputDir); err == nil {
			errs = packer.MultiErrorAppend(
				errs,
				fmt.Errorf("Output directory '%s' already exists. It must not exist.", b.config.OutputDir))
		}
	}

	b.config.bootWait, err = time.ParseDuration(b.config.RawBootWait)
	if err != nil {
		errs = packer.MultiErrorAppend(
			errs, fmt.Errorf("Failed parsing boot_wait: %s", err))
	}

	if b.config.RawShutdownTimeout == "" {
		b.config.RawShutdownTimeout = "5m"
	}

	if b.config.RawSSHWaitTimeout == "" {
		b.config.RawSSHWaitTimeout = "20m"
	}

	b.config.shutdownTimeout, err = time.ParseDuration(b.config.RawShutdownTimeout)
	if err != nil {
		errs = packer.MultiErrorAppend(
			errs, fmt.Errorf("Failed parsing shutdown_timeout: %s", err))
	}

	if b.config.SSHKeyPath != "" {
		if _, err := os.Stat(b.config.SSHKeyPath); err != nil {
			errs = packer.MultiErrorAppend(
				errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		} else if _, err := commonssh.FileSigner(b.config.SSHKeyPath); err != nil {
			errs = packer.MultiErrorAppend(
				errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		}
	}

	if b.config.SSHHostPortMin > b.config.SSHHostPortMax {
		errs = packer.MultiErrorAppend(
			errs, errors.New("ssh_host_port_min must be less than ssh_host_port_max"))
	}

	if b.config.SSHUser == "" {
		errs = packer.MultiErrorAppend(
			errs, errors.New("An ssh_username must be specified."))
	}

	b.config.sshWaitTimeout, err = time.ParseDuration(b.config.RawSSHWaitTimeout)
	if err != nil {
		errs = packer.MultiErrorAppend(
			errs, fmt.Errorf("Failed parsing ssh_wait_timeout: %s", err))
	}

	if b.config.VNCPortMin > b.config.VNCPortMax {
		errs = packer.MultiErrorAppend(
			errs, fmt.Errorf("vnc_port_min must be less than vnc_port_max"))
	}

	if b.config.QemuArgs == nil {
		b.config.QemuArgs = make([][]string, 0)
	}

	if b.config.ISOChecksumType == "none" {
		warnings = append(warnings,
			"A checksum type of 'none' was specified. Since ISO files are so big,\n"+
				"a checksum is highly recommended.")
	}

	if errs != nil && len(errs.Errors) > 0 {
		return warnings, errs
	}

	return warnings, nil
}

//.........這裏部分代碼省略.........

	if b.config.ISOChecksumType == "" {
		errs = packer.MultiErrorAppend(
			errs, errors.New("The iso_checksum_type must be specified."))
	} else {
		b.config.ISOChecksumType = strings.ToLower(b.config.ISOChecksumType)
		if h := common.HashForType(b.config.ISOChecksumType); h == nil {
			errs = packer.MultiErrorAppend(
				errs,
				fmt.Errorf("Unsupported checksum type: %s", b.config.ISOChecksumType))
		}
	}

	if b.config.RawSingleISOUrl == "" && len(b.config.ISOUrls) == 0 {
		errs = packer.MultiErrorAppend(
			errs, errors.New("One of iso_url or iso_urls must be specified."))
	} else if b.config.RawSingleISOUrl != "" && len(b.config.ISOUrls) > 0 {
		errs = packer.MultiErrorAppend(
			errs, errors.New("Only one of iso_url or iso_urls may be specified."))
	} else if b.config.RawSingleISOUrl != "" {
		b.config.ISOUrls = []string{b.config.RawSingleISOUrl}
	}

	for i, url := range b.config.ISOUrls {
		b.config.ISOUrls[i], err = common.DownloadableURL(url)
		if err != nil {
			errs = packer.MultiErrorAppend(
				errs, fmt.Errorf("Failed to parse iso_url %d: %s", i+1, err))
		}
	}

	if !b.config.PackerForce {
		if _, err := os.Stat(b.config.OutputDir); err == nil {
			errs = packer.MultiErrorAppend(
				errs,
				fmt.Errorf("Output directory '%s' already exists. It must not exist.", b.config.OutputDir))
		}
	}

	b.config.bootWait, err = time.ParseDuration(b.config.RawBootWait)
	if err != nil {
		errs = packer.MultiErrorAppend(
			errs, fmt.Errorf("Failed parsing boot_wait: %s", err))
	}

	if b.config.RawShutdownTimeout == "" {
		b.config.RawShutdownTimeout = "5m"
	}

	if b.config.RawSSHWaitTimeout == "" {
		b.config.RawSSHWaitTimeout = "20m"
	}

	b.config.shutdownTimeout, err = time.ParseDuration(b.config.RawShutdownTimeout)
	if err != nil {
		errs = packer.MultiErrorAppend(
			errs, fmt.Errorf("Failed parsing shutdown_timeout: %s", err))
	}

	if b.config.SSHKeyPath != "" {
		if _, err := os.Stat(b.config.SSHKeyPath); err != nil {
			errs = packer.MultiErrorAppend(
				errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		} else if _, err := commonssh.FileSigner(b.config.SSHKeyPath); err != nil {
			errs = packer.MultiErrorAppend(
				errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		}
	}

	if b.config.SSHHostPortMin > b.config.SSHHostPortMax {
		errs = packer.MultiErrorAppend(
			errs, errors.New("ssh_host_port_min must be less than ssh_host_port_max"))
	}

	if b.config.SSHUser == "" {
		errs = packer.MultiErrorAppend(
			errs, errors.New("An ssh_username must be specified."))
	}

	b.config.sshWaitTimeout, err = time.ParseDuration(b.config.RawSSHWaitTimeout)
	if err != nil {
		errs = packer.MultiErrorAppend(
			errs, fmt.Errorf("Failed parsing ssh_wait_timeout: %s", err))
	}

	if b.config.VNCPortMin > b.config.VNCPortMax {
		errs = packer.MultiErrorAppend(
			errs, fmt.Errorf("vnc_port_min must be less than vnc_port_max"))
	}

	if b.config.QemuArgs == nil {
		b.config.QemuArgs = make([][]string, 0)
	}

	if errs != nil && len(errs.Errors) > 0 {
		return nil, errs
	}

	return nil, nil
}

//.........這裏部分代碼省略.........

	if c.SSHPort == 0 {
		c.SSHPort = 22
	}

	if c.RawSSHWaitTimeout == "" {
		c.RawSSHWaitTimeout = "20m"
	}

	if c.OutputDir == "" {
		c.OutputDir = fmt.Sprintf("output-%s", pc.PackerBuildName)
	}

	if c.VMName == "" {
		c.VMName = fmt.Sprintf("packer-%s-{{timestamp}}", pc.PackerBuildName)
	}

	if c.Format == "" {
		c.Format = "xva"
	}

	if c.KeepVM == "" {
		c.KeepVM = "never"
	}

	if c.IPGetter == "" {
		c.IPGetter = "auto"
	}

	// Validation

	if c.Username == "" {
		errs = append(errs, errors.New("remote_username must be specified."))
	}

	if c.Password == "" {
		errs = append(errs, errors.New("remote_password must be specified."))
	}

	if c.HostIp == "" {
		errs = append(errs, errors.New("remote_host must be specified."))
	}

	if c.HostPortMin > c.HostPortMax {
		errs = append(errs, errors.New("the host min port must be less than the max"))
	}

	if c.HTTPPortMin > c.HTTPPortMax {
		errs = append(errs, errors.New("the HTTP min port must be less than the max"))
	}

	c.BootWait, err = time.ParseDuration(c.RawBootWait)
	if err != nil {
		errs = append(errs, fmt.Errorf("Failed to parse boot_wait: %s", err))
	}

	if c.SSHKeyPath != "" {
		if _, err := os.Stat(c.SSHKeyPath); err != nil {
			errs = append(errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		} else if _, err := commonssh.FileSigner(c.SSHKeyPath); err != nil {
			errs = append(errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		}
	}

	/*
		if c.SSHHostPortMin > c.SSHHostPortMax {
			errs = append(errs,
				errors.New("ssh_host_port_min must be less than ssh_host_port_max"))
		}
	*/

	if c.SSHUser == "" {
		errs = append(errs, errors.New("An ssh_username must be specified."))
	}

	c.SSHWaitTimeout, err = time.ParseDuration(c.RawSSHWaitTimeout)
	if err != nil {
		errs = append(errs, fmt.Errorf("Failed to parse ssh_wait_timeout: %s", err))
	}

	switch c.Format {
	case "template", "xva", "vdi_raw", "vdi_vhd", "none":
	default:
		errs = append(errs, errors.New("format must be one of 'template', 'xva', 'vdi_raw', 'vdi_vhd', 'none'"))
	}

	switch c.KeepVM {
	case "always", "never", "on_success":
	default:
		errs = append(errs, errors.New("keep_vm must be one of 'always', 'never', 'on_success'"))
	}

	switch c.IPGetter {
	case "auto", "tools", "http":
	default:
		errs = append(errs, errors.New("ip_getter must be one of 'auto', 'tools', 'http'"))
	}

	return errs
}

//.........這裏部分代碼省略.........
		"http_directory":   &c.HTTPDir,
		"ssh_key_path":     &c.SSHKeyPath,
		"ssh_password":     &c.SSHPassword,
		"ssh_username":     &c.SSHUser,
		"ssh_wait_timeout": &c.RawSSHWaitTimeout,
		"output_directory": &c.OutputDir,
		"format":           &c.Format,
		"keep_vm":          &c.KeepVM,
		"ip_getter":        &c.IPGetter,
	}
	for i := range c.FloppyFiles {
		templates[fmt.Sprintf("floppy_files[%d]", i)] = &c.FloppyFiles[i]
	}

	errs := make([]error, 0)
	for n, ptr := range templates {
		*ptr, err = t.Process(*ptr, nil)
		if err != nil {
			errs = append(errs, fmt.Errorf("Error processing %s: %s", n, err))
		}
	}

	// Validation

	if c.Username == "" {
		errs = append(errs, errors.New("remote_username must be specified."))
	}

	if c.Password == "" {
		errs = append(errs, errors.New("remote_password must be specified."))
	}

	if c.HostIp == "" {
		errs = append(errs, errors.New("remote_host must be specified."))
	}

	if c.HostPortMin > c.HostPortMax {
		errs = append(errs, errors.New("the host min port must be less than the max"))
	}

	if c.HTTPPortMin > c.HTTPPortMax {
		errs = append(errs, errors.New("the HTTP min port must be less than the max"))
	}

	c.BootWait, err = time.ParseDuration(c.RawBootWait)
	if err != nil {
		errs = append(errs, fmt.Errorf("Failed to parse boot_wait: %s", err))
	}

	for i, command := range c.BootCommand {
		if err := t.Validate(command); err != nil {
			errs = append(errs,
				fmt.Errorf("Error processing boot_command[%d]: %s", i, err))
		}
	}

	if c.SSHKeyPath != "" {
		if _, err := os.Stat(c.SSHKeyPath); err != nil {
			errs = append(errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		} else if _, err := commonssh.FileSigner(c.SSHKeyPath); err != nil {
			errs = append(errs, fmt.Errorf("ssh_key_path is invalid: %s", err))
		}
	}

	/*
		if c.SSHHostPortMin > c.SSHHostPortMax {
			errs = append(errs,
				errors.New("ssh_host_port_min must be less than ssh_host_port_max"))
		}
	*/

	if c.SSHUser == "" {
		errs = append(errs, errors.New("An ssh_username must be specified."))
	}

	c.SSHWaitTimeout, err = time.ParseDuration(c.RawSSHWaitTimeout)
	if err != nil {
		errs = append(errs, fmt.Errorf("Failed to parse ssh_wait_timeout: %s", err))
	}

	switch c.Format {
	case "xva", "vdi_raw", "vdi_vhd", "none":
	default:
		errs = append(errs, errors.New("format must be one of 'xva', 'vdi_raw', 'vdi_vhd', 'none'"))
	}

	switch c.KeepVM {
	case "always", "never", "on_success":
	default:
		errs = append(errs, errors.New("keep_vm must be one of 'always', 'never', 'on_success'"))
	}

	switch c.IPGetter {
	case "auto", "tools", "http":
	default:
		errs = append(errs, errors.New("ip_getter must be one of 'auto', 'tools', 'http'"))
	}

	return errs
}