90 lines
2.0 KiB
Go
90 lines
2.0 KiB
Go
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package digitalocean
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import (
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"cgl.tideland.biz/identifier"
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"crypto/rand"
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"crypto/rsa"
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"crypto/x509"
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"encoding/hex"
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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/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 map[string]interface{}) multistep.StepAction {
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client := state["client"].(*DigitalOceanClient)
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ui := state["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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if err != nil {
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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// Set the pem formatted private key on the state for later
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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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// Create the public key for uploading to DO
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pub := priv.PublicKey
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pub_der, err := x509.MarshalPKIXPublicKey(&pub)
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if err != nil {
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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pub_blk := pem.Block{
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Type: "PUBLIC KEY",
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Headers: nil,
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Bytes: pub_der,
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}
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pub_pem := string(pem.EncodeToMemory(&pub_blk))
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name := fmt.Sprintf("packer %s", hex.EncodeToString(identifier.NewUUID().Raw()))
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keyId, err := client.CreateKey(name, pub_pem)
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if err != nil {
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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["keyId"] = keyId
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state["privateKey"] = string(pem.EncodeToMemory(&priv_blk))
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return multistep.ActionContinue
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}
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func (s *stepCreateSSHKey) Cleanup(state map[string]interface{}) {
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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["client"].(*DigitalOceanClient)
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ui := state["ui"].(packer.Ui)
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ui.Say("Deleting temporary ssh key...")
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err := client.DestroyKey(s.keyId)
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if err != nil {
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ui.Error(fmt.Sprintf(
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"Error cleaning up ssh key. Please delete the key manually: %s", s.keyId))
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}
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}
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