From c24ee2c9caf54ae2e87ae0e7f1c0a81c755e81bf Mon Sep 17 00:00:00 2001
From: Marin Salinas <marinssalinas@gmail.com>
Date: Thu, 31 Jan 2019 15:29:31 -0600
Subject: [PATCH] feature: bsusurrogate, add keypair step

---
 builder/osc/bsusurrogate/builder.go |   5 ++
 builder/osc/common/step_key_pair.go | 123 ++++++++++++++++++++++++++++
 2 files changed, 128 insertions(+)
 create mode 100644 builder/osc/common/step_key_pair.go

diff --git a/builder/osc/bsusurrogate/builder.go b/builder/osc/bsusurrogate/builder.go
index 2329b9e02..a49222184 100644
--- a/builder/osc/bsusurrogate/builder.go
+++ b/builder/osc/bsusurrogate/builder.go
@@ -153,6 +153,11 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 			SubnetFilter:        b.config.SubnetFilter,
 			SubregionName:       b.config.Subregion,
 		},
+		&osccommon.StepKeyPair{
+			Debug:        b.config.PackerDebug,
+			Comm:         &b.config.RunConfig.Comm,
+			DebugKeyPath: fmt.Sprintf("oapi_%s.pem", b.config.PackerBuildName),
+		},
 	}
 
 	b.runner = common.NewRunner(steps, b.config.PackerConfig, ui)
diff --git a/builder/osc/common/step_key_pair.go b/builder/osc/common/step_key_pair.go
new file mode 100644
index 000000000..580046b55
--- /dev/null
+++ b/builder/osc/common/step_key_pair.go
@@ -0,0 +1,123 @@
+package common
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"runtime"
+
+	"github.com/hashicorp/packer/helper/communicator"
+	"github.com/hashicorp/packer/helper/multistep"
+	"github.com/hashicorp/packer/packer"
+	"github.com/outscale/osc-go/oapi"
+)
+
+type StepKeyPair struct {
+	Debug        bool
+	Comm         *communicator.Config
+	DebugKeyPath string
+
+	doCleanup bool
+}
+
+func (s *StepKeyPair) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
+	ui := state.Get("ui").(packer.Ui)
+
+	if s.Comm.SSHPrivateKeyFile != "" {
+		ui.Say("Using existing SSH private key")
+		privateKeyBytes, err := s.Comm.ReadSSHPrivateKeyFile()
+		if err != nil {
+			state.Put("error", err)
+			return multistep.ActionHalt
+		}
+
+		s.Comm.SSHPrivateKey = privateKeyBytes
+
+		return multistep.ActionContinue
+	}
+
+	if s.Comm.SSHAgentAuth && s.Comm.SSHKeyPairName == "" {
+		ui.Say("Using SSH Agent with key pair in Source AMI")
+		return multistep.ActionContinue
+	}
+
+	if s.Comm.SSHAgentAuth && s.Comm.SSHKeyPairName != "" {
+		ui.Say(fmt.Sprintf("Using SSH Agent for existing key pair %s", s.Comm.SSHKeyPairName))
+		return multistep.ActionContinue
+	}
+
+	if s.Comm.SSHTemporaryKeyPairName == "" {
+		ui.Say("Not using temporary keypair")
+		s.Comm.SSHKeyPairName = ""
+		return multistep.ActionContinue
+	}
+
+	oapiconn := state.Get("oapi").(*oapi.Client)
+
+	ui.Say(fmt.Sprintf("Creating temporary keypair: %s", s.Comm.SSHTemporaryKeyPairName))
+	keyResp, err := oapiconn.POST_CreateKeypair(oapi.CreateKeypairRequest{
+		KeypairName: s.Comm.SSHTemporaryKeyPairName})
+	if err != nil {
+		state.Put("error", fmt.Errorf("Error creating temporary keypair: %s", err))
+		return multistep.ActionHalt
+	}
+
+	s.doCleanup = true
+
+	// Set some data for use in future steps
+	s.Comm.SSHKeyPairName = s.Comm.SSHTemporaryKeyPairName
+	s.Comm.SSHPrivateKey = []byte(keyResp.OK.Keypair.PrivateKey)
+
+	// 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([]byte(keyResp.OK.Keypair.PrivateKey)); 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
+}
+
+func (s *StepKeyPair) Cleanup(state multistep.StateBag) {
+	if !s.doCleanup {
+		return
+	}
+
+	oapiconn := state.Get("oapi").(*oapi.Client)
+	ui := state.Get("ui").(packer.Ui)
+
+	// Remove the keypair
+	ui.Say("Deleting temporary keypair...")
+	_, err := oapiconn.POST_DeleteKeypair(oapi.DeleteKeypairRequest{KeypairName: s.Comm.SSHTemporaryKeyPairName})
+	if err != nil {
+		ui.Error(fmt.Sprintf(
+			"Error cleaning up keypair. Please delete the key manually: %s", s.Comm.SSHTemporaryKeyPairName))
+	}
+
+	// Also remove the physical key if we're debugging.
+	if s.Debug {
+		if err := os.Remove(s.DebugKeyPath); err != nil {
+			ui.Error(fmt.Sprintf(
+				"Error removing debug key '%s': %s", s.DebugKeyPath, err))
+		}
+	}
+}