add iam user SSH public key support (#533)

Co-authored-by: Tom Neyland <tcneyland@gmail.com>
Co-authored-by: Matt Shipman <undermybed@undermybed.info>

Co-authored-by: Tom Neyland <tcneyland@gmail.com>
Co-authored-by: Matt Shipman <undermybed@undermybed.info>
Co-authored-by: Joey Davenport <jrsdav@users.noreply.github.com>

resources/iam-user-ssh-keys.go

@@ -0,0 +1,68 @@
+package resources
+
+import (
+	"fmt"
+
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/iam"
+	"github.com/rebuy-de/aws-nuke/pkg/types"
+)
+
+type UserSSHKey struct {
+	svc      *iam.IAM
+	userName string
+	sshKeyID string
+}
+
+func init() {
+	register("IAMUserSSHPublicKey", ListIAMUserSSHPublicKeys)
+}
+
+func ListIAMUserSSHPublicKeys(sess *session.Session) ([]Resource, error) {
+	svc := iam.New(sess)
+
+	usersOutput, err := svc.ListUsers(nil)
+	if err != nil {
+		return nil, err
+	}
+
+	var resources []Resource
+	for _, user := range usersOutput.Users {
+		listOutput, err := svc.ListSSHPublicKeys(&iam.ListSSHPublicKeysInput{
+			UserName: user.UserName,
+		})
+
+		if err != nil {
+			return nil, err
+		}
+
+		for _, publicKey := range listOutput.SSHPublicKeys {
+			resources = append(resources, &UserSSHKey{
+				svc:      svc,
+				userName: *user.UserName,
+				sshKeyID: *publicKey.SSHPublicKeyId,
+			})
+		}
+	}
+
+	return resources, nil
+}
+
+func (u *UserSSHKey) Properties() types.Properties {
+	return types.NewProperties().
+		Set("UserName", u.userName).
+		Set("SSHKeyID", u.sshKeyID)
+}
+
+func (u *UserSSHKey) String() string {
+	return fmt.Sprintf("%s -> %s", u.userName, u.sshKeyID)
+}
+
+func (u *UserSSHKey) Remove() error {
+	_, err := u.svc.DeleteSSHPublicKey(&iam.DeleteSSHPublicKeyInput{
+		UserName:       &u.userName,
+		SSHPublicKeyId: &u.sshKeyID,
+	})
+
+	return err
+}