builder/amazon regional KMS keys

builder/amazon/common/ami_config_test.go

@@ -67,6 +67,17 @@ func TestAMIConfigPrepare_regions(t *testing.T) {
 		t.Fatal("shouldn't have error")
 	}
 
+	c.SnapshotUsers = []string{"user-foo", "user-bar"}
+	c.AMIRegions = []string{"us-east-1", "us-east-2", "us-west-1"}
+	c.AMIRegionKmsKeyIds = map[string]string{
+		"us-east-1": "123-456-7890",
+		"us-west-1": "789-012-3456",
+		"us-east-2": "",
+	}
+	if err := c.Prepare(nil); err == nil {
+		t.Fatal("should have an error b/c can't use default KMS key if sharing")
+	}
+
 	c.AMIRegions = []string{"us-east-1", "us-west-1"}
 	c.AMIRegionKmsKeyIds = map[string]string{
 		"us-east-1": "123-456-7890",

builder/amazon/common/step_ami_region_copy.go

@@ -13,9 +13,11 @@ import (
 )
 
 type StepAMIRegionCopy struct {
-	AccessConfig *AccessConfig
-	Regions      []string
-	Name         string
+	AccessConfig      *AccessConfig
+	Regions           []string
+	RegionKeyIds      map[string]string
+	EncryptBootVolume bool
+	Name              string
 }
 
 func (s *StepAMIRegionCopy) Run(state multistep.StateBag) multistep.StepAction {
@@ -33,6 +35,7 @@ func (s *StepAMIRegionCopy) Run(state multistep.StateBag) multistep.StepAction {
 
 	var lock sync.Mutex
 	var wg sync.WaitGroup
+	var reg_key_id string
 	errs := new(packer.MultiError)
 	for _, region := range s.Regions {
 		if region == *ec2conn.Config.Region {
@@ -44,10 +47,14 @@ func (s *StepAMIRegionCopy) Run(state multistep.StateBag) multistep.StepAction {
 		wg.Add(1)
 		ui.Message(fmt.Sprintf("Copying to: %s", region))
 
+		reg_key_id = s.RegionKeyIds[region]
+		if !s.EncryptBootVolume {
+			reg_key_id = ""
+		}
+
 		go func(region string) {
 			defer wg.Done()
-			id, snapshotIds, err := amiRegionCopy(state, s.AccessConfig, s.Name, ami, region, *ec2conn.Config.Region)
-
+			id, snapshotIds, err := amiRegionCopy(state, s.AccessConfig, s.Name, ami, region, *ec2conn.Config.Region, reg_key_id)
 			lock.Lock()
 			defer lock.Unlock()
 			amis[region] = id
@@ -80,8 +87,9 @@ func (s *StepAMIRegionCopy) Cleanup(state multistep.StateBag) {
 // amiRegionCopy does a copy for the given AMI to the target region and
 // returns the resulting ID and snapshot IDs, or error.
 func amiRegionCopy(state multistep.StateBag, config *AccessConfig, name string, imageId string,
-	target string, source string) (string, []string, error) {
+	target string, source string, key_id string) (string, []string, error) {
 	snapshotIds := []string{}
+	is_encrypted := false
 
 	// Connect to the region where the AMI will be copied to
 	awsConfig, err := config.Config()
@@ -95,11 +103,16 @@ func amiRegionCopy(state multistep.StateBag, config *AccessConfig, name string,
 		return "", snapshotIds, err
 	}
 	regionconn := ec2.New(session)
-
+	// if we've provided a map of key ids to regions, use those keys.
+	if len(key_id) > 0 {
+		is_encrypted = true
+	}
 	resp, err := regionconn.CopyImage(&ec2.CopyImageInput{
 		SourceRegion:  &source,
 		SourceImageId: &imageId,
 		Name:          &name,
+		Encrypted:     aws.Bool(is_encrypted),
+		KmsKeyId:      aws.String(key_id),
 	})
 
 	if err != nil {

builder/amazon/common/step_encrypted_ami.go

@@ -25,7 +25,7 @@ func (s *StepCreateEncryptedAMICopy) Run(state multistep.StateBag) multistep.Ste
 	// Encrypt boot not set, so skip step
 	if !s.EncryptBootVolume {
 		if kmsKeyId != "" {
-			log.Printf("Ignoring KMS Key ID: %s, encrypted_boot=false", kmsKeyId)
+			log.Printf("Ignoring KMS Key ID: %s, encrypted=false", kmsKeyId)
 		}
 		return multistep.ActionContinue
 	}
@@ -36,14 +36,14 @@ func (s *StepCreateEncryptedAMICopy) Run(state multistep.StateBag) multistep.Ste
 	var region, id string
 	if amis != nil {
 		for region, id = range amis {
-			break // Only get the first
+			break // There is only ever one region:ami pair in this map
 		}
 	}
 
 	ui.Say(fmt.Sprintf("Copying AMI: %s(%s)", region, id))
 
 	if kmsKeyId != "" {
-		ui.Say(fmt.Sprintf("Encrypting with KMS Key ID: %s", kmsKeyId))
+		ui.Say(fmt.Sprintf("Encypting with KMS Key ID: %s", kmsKeyId))
 	}
 
 	copyOpts := &ec2.CopyImageInput{

builder/amazon/ebs/builder.go

@@ -198,9 +198,11 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 			Name:              b.config.AMIName,
 		},
 		&awscommon.StepAMIRegionCopy{
-			AccessConfig: &b.config.AccessConfig,
-			Regions:      b.config.AMIRegions,
-			Name:         b.config.AMIName,
+			AccessConfig:      &b.config.AccessConfig,
+			Regions:           b.config.AMIRegions,
+			RegionKeyIds:      b.config.AMIRegionKmsKeyIds,
+			EncryptBootVolume: b.config.AMIEncryptBootVolume,
+			Name:              b.config.AMIName,
 		},
 		&awscommon.StepModifyAMIAttributes{
 			Description:    b.config.AMIDescription,