89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
package digitalocean
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import (
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"code.google.com/p/go.crypto/ssh"
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"crypto/rand"
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"crypto/rsa"
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"crypto/x509"
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"encoding/pem"
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"fmt"
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"github.com/mitchellh/multistep"
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"github.com/mitchellh/packer/common/uuid"
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"github.com/mitchellh/packer/packer"
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"log"
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)
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type stepCreateSSHKey struct {
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keyId uint
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}
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func (s *stepCreateSSHKey) Run(state multistep.StateBag) multistep.StepAction {
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client := state.Get("client").(*DigitalOceanClient)
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ui := state.Get("ui").(packer.Ui)
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ui.Say("Creating temporary ssh key for droplet...")
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priv, err := rsa.GenerateKey(rand.Reader, 2014)
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// ASN.1 DER encoded form
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priv_der := x509.MarshalPKCS1PrivateKey(priv)
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priv_blk := pem.Block{
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Type: "RSA PRIVATE KEY",
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Headers: nil,
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Bytes: priv_der,
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}
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// Set the private key in the statebag for later
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state.Put("privateKey", string(pem.EncodeToMemory(&priv_blk)))
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// Marshal the public key into SSH compatible format
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// TODO properly handle the public key error
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pub, _ := ssh.NewPublicKey(&priv.PublicKey)
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pub_sshformat := string(ssh.MarshalAuthorizedKey(pub))
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// The name of the public key on DO
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name := fmt.Sprintf("packer-%s", uuid.TimeOrderedUUID())
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// Create the key!
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keyId, err := client.CreateKey(name, pub_sshformat)
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if err != nil {
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err := fmt.Errorf("Error creating temporary SSH key: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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// We use this to check cleanup
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s.keyId = keyId
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log.Printf("temporary ssh key name: %s", name)
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// Remember some state for the future
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state.Put("ssh_key_id", keyId)
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return multistep.ActionContinue
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}
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func (s *stepCreateSSHKey) Cleanup(state multistep.StateBag) {
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// If no key name is set, then we never created it, so just return
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if s.keyId == 0 {
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return
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}
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client := state.Get("client").(*DigitalOceanClient)
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ui := state.Get("ui").(packer.Ui)
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c := state.Get("config").(config)
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ui.Say("Deleting temporary ssh key...")
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err := client.DestroyKey(s.keyId)
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curlstr := fmt.Sprintf("curl '%v/ssh_keys/%v/destroy?client_id=%v&api_key=%v'",
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DIGITALOCEAN_API_URL, s.keyId, c.ClientID, c.APIKey)
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if err != nil {
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log.Printf("Error cleaning up ssh key: %v", err.Error())
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ui.Error(fmt.Sprintf(
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"Error cleaning up ssh key. Please delete the key manually: %v", curlstr))
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}
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}
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