// Key method for ssh.ClientKeyring interface
func (k *SimpleKeychain) Key(i int) (ssh.PublicKey, error) {
if i < 0 || i >= len(k.keys) {
return nil, nil
}
switch key := k.keys[i].(type) {
case *rsa.PrivateKey:
return ssh.NewPublicKey(&key.PublicKey)
case *dsa.PrivateKey:
return ssh.NewPublicKey(&key.PublicKey)
}
panic("unknown key type")
}
func (k *Keychain) Key(i int) (key ssh.PublicKey, err error) {
if i < 0 || i >= len(k.keys) {
return nil, nil
}
switch key := k.keys[i].(type) {
case *rsa.PrivateKey:
return ssh.NewPublicKey(&key.PublicKey)
case *dsa.PrivateKey:
return ssh.NewPublicKey(&key.PublicKey)
}
return nil, errors.New("ssh: Unknown key type")
}
func (s *stepCreateSSHKey) Run(state multistep.StateBag) multistep.StepAction {
client := state.Get("client").(*DigitalOceanClient)
ui := state.Get("ui").(packer.Ui)
ui.Say("Creating temporary ssh key for droplet...")
priv, err := rsa.GenerateKey(rand.Reader, 2014)
// ASN.1 DER encoded form
priv_der := x509.MarshalPKCS1PrivateKey(priv)
priv_blk := pem.Block{
Type: "RSA PRIVATE KEY",
Headers: nil,
Bytes: priv_der,
}
// Set the private key in the statebag for later
state.Put("privateKey", string(pem.EncodeToMemory(&priv_blk)))
// Marshal the public key into SSH compatible format
// TODO properly handle the public key error
pub, _ := ssh.NewPublicKey(&priv.PublicKey)
pub_sshformat := string(ssh.MarshalAuthorizedKey(pub))
// The name of the public key on DO
name := fmt.Sprintf("packer-%s", uuid.TimeOrderedUUID())
// Create the key!
keyId, err := client.CreateKey(name, pub_sshformat)
if err != nil {
err := fmt.Errorf("Error creating temporary SSH key: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
// We use this to check cleanup
s.keyId = keyId
log.Printf("temporary ssh key name: %s", name)
// Remember some state for the future
state.Put("ssh_key_id", keyId)
return multistep.ActionContinue
}
// Run executes the Packer build step that generates SSH key pairs.
func (s *StepCreateSSHKey) Run(state multistep.StateBag) multistep.StepAction {
ui := state.Get("ui").(packer.Ui)
ui.Say("Creating temporary SSH key for instance...")
priv, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
err := fmt.Errorf("Error creating temporary ssh key: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
priv_blk := pem.Block{
Type: "RSA PRIVATE KEY",
Headers: nil,
Bytes: x509.MarshalPKCS1PrivateKey(priv),
}
pub, err := ssh.NewPublicKey(&priv.PublicKey)
if err != nil {
err := fmt.Errorf("Error creating temporary ssh key: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
state.Put("ssh_private_key", string(pem.EncodeToMemory(&priv_blk)))
state.Put("ssh_public_key", string(ssh.MarshalAuthorizedKey(pub)))
if s.Debug {
ui.Message(fmt.Sprintf("Saving key for debug purposes: %s", s.DebugKeyPath))
f, err := os.Create(s.DebugKeyPath)
if err != nil {
state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
return multistep.ActionHalt
}
// Write out the key
err = pem.Encode(f, &priv_blk)
f.Close()
if err != nil {
state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
return multistep.ActionHalt
}
}
return multistep.ActionContinue
}
func (self *stepCreateSshKey) Run(state multistep.StateBag) multistep.StepAction {
ui := state.Get("ui").(packer.Ui)
if self.PrivateKeyFile != "" {
ui.Say(fmt.Sprintf("Reading private key file (%s)...", self.PrivateKeyFile))
privateKeyBytes, err := ioutil.ReadFile(self.PrivateKeyFile)
if err != nil {
state.Put("error", fmt.Errorf("Error loading configured private key file: %s", err))
return multistep.ActionHalt
}
state.Put("ssh_private_key", string(privateKeyBytes))
return multistep.ActionContinue
}
client := state.Get("client").(*SoftlayerClient)
ui.Say("Creating temporary ssh key for the instance...")
rsaKey, err := rsa.GenerateKey(rand.Reader, 2014)
if err != nil {
ui.Error(err.Error())
state.Put("error", err)
return multistep.ActionHalt
}
// ASN.1 DER encoded form
privDer := x509.MarshalPKCS1PrivateKey(rsaKey)
privBlk := pem.Block{
Type: "RSA PRIVATE KEY",
Headers: nil,
Bytes: privDer,
}
// Set the private key in the statebag for later
state.Put("ssh_private_key", string(pem.EncodeToMemory(&privBlk)))
pub, err := ssh.NewPublicKey(&rsaKey.PublicKey)
if err != nil {
ui.Error(err.Error())
state.Put("error", err)
return multistep.ActionHalt
}
publicKey := strings.TrimSpace(string(ssh.MarshalAuthorizedKey(pub)))
// The name of the public key
label := fmt.Sprintf("packer-%s", uuid.TimeOrderedUUID())
keyId, err := client.UploadSshKey(label, publicKey)
if err != nil {
ui.Error(err.Error())
state.Put("error", err)
return multistep.ActionHalt
}
self.keyId = keyId
state.Put("ssh_key_id", keyId)
ui.Say(fmt.Sprintf("Created SSH key with id '%d'", keyId))
return multistep.ActionContinue
}
func (s *stepCreateSSHKey) Run(state multistep.StateBag) multistep.StepAction {
client := state.Get("client").(*godo.Client)
ui := state.Get("ui").(packer.Ui)
ui.Say("Creating temporary ssh key for droplet...")
priv, err := rsa.GenerateKey(rand.Reader, 2014)
// ASN.1 DER encoded form
priv_der := x509.MarshalPKCS1PrivateKey(priv)
priv_blk := pem.Block{
Type: "RSA PRIVATE KEY",
Headers: nil,
Bytes: priv_der,
}
// Set the private key in the statebag for later
state.Put("privateKey", string(pem.EncodeToMemory(&priv_blk)))
// Marshal the public key into SSH compatible format
// TODO properly handle the public key error
pub, _ := ssh.NewPublicKey(&priv.PublicKey)
pub_sshformat := string(ssh.MarshalAuthorizedKey(pub))
// The name of the public key on DO
name := fmt.Sprintf("packer-%s", uuid.TimeOrderedUUID())
// Create the key!
key, _, err := client.Keys.Create(&godo.KeyCreateRequest{
Name: name,
PublicKey: pub_sshformat,
})
if err != nil {
err := fmt.Errorf("Error creating temporary SSH key: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
// We use this to check cleanup
s.keyId = key.ID
log.Printf("temporary ssh key name: %s", name)
// Remember some state for the future
state.Put("ssh_key_id", key.ID)
// If we're in debug mode, output the private key to the working directory.
if s.Debug {
ui.Message(fmt.Sprintf("Saving key for debug purposes: %s", s.DebugKeyPath))
f, err := os.Create(s.DebugKeyPath)
if err != nil {
state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
return multistep.ActionHalt
}
defer f.Close()
// Write the key out
if _, err := f.Write(pem.EncodeToMemory(&priv_blk)); err != nil {
state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
return multistep.ActionHalt
}
// Chmod it so that it is SSH ready
if runtime.GOOS != "windows" {
if err := f.Chmod(0600); err != nil {
state.Put("error", fmt.Errorf("Error setting permissions of debug key: %s", err))
return multistep.ActionHalt
}
}
}
return multistep.ActionContinue
}
