package common import ( "errors" "fmt" "github.com/mitchellh/packer/packer" "os" "time" ) type SSHConfig struct { SSHHostPortMin uint `mapstructure:"ssh_host_port_min"` SSHHostPortMax uint `mapstructure:"ssh_host_port_max"` SSHKeyPath string `mapstructure:"ssh_key_path"` SSHPassword string `mapstructure:"ssh_password"` SSHPort uint `mapstructure:"ssh_port"` SSHUser string `mapstructure:"ssh_username"` RawSSHWaitTimeout string `mapstructure:"ssh_wait_timeout"` SSHWaitTimeout time.Duration } 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 := sshKeyToSigner(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 }