/
main.go
144 lines (128 loc) · 3.57 KB
/
main.go
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package main
import (
"fmt"
"github.com/aws/aws-sdk-go-v2/aws"
"github.com/aws/aws-sdk-go-v2/aws/external"
"github.com/aws/aws-sdk-go-v2/service/iam"
"gopkg.in/alecthomas/kingpin.v2"
"gopkg.in/go-ini/ini.v1"
"io"
"io/ioutil"
"log"
"os"
"os/user"
"path/filepath"
"time"
)
var (
logger *log.Logger
flagVerbose = kingpin.Flag("verbose", "Verbose mode.").Short('v').Bool()
flagForce = kingpin.Flag("force", "Rotate the key regardless of its age.").Bool()
flagKey = kingpin.Flag("key", "Key number (used for multiple keys).").Short('k').String()
flagProfile = kingpin.Flag("profile", "Profile name (if not using default profile).").Short('p').String()
)
func getCurrentAccessKey(cfg aws.Config) (string, error) {
svc := iam.New(cfg)
params := iam.ListAccessKeysInput{}
req := svc.ListAccessKeysRequest(¶ms)
resp, err := req.Send()
logger.Printf("foo")
if err != nil {
panic(err.Error())
}
if len(resp.AccessKeyMetadata) == 0 {
return "", &NoKeysFoundError{}
}
if len(resp.AccessKeyMetadata) > 1 {
return "", &MultipleKeysFoundError{}
}
oldAccessKeyId := *resp.AccessKeyMetadata[0].AccessKeyId
logger.Printf("Old access key id: %s", oldAccessKeyId)
if *flagForce {
return oldAccessKeyId, nil
}
oldCreationDate := *resp.AccessKeyMetadata[0].CreateDate
logger.Printf("Old create date: %v", oldCreationDate)
now := time.Now().UTC()
logger.Printf("Now: %v", now)
elapsedHours := now.Sub(oldCreationDate).Hours()
logger.Printf("Elapsed hours: %f", elapsedHours)
if elapsedHours < 720 {
return oldAccessKeyId, &KeyTooYoungError{oldAccessKeyId}
}
fmt.Println("Found current key:", oldAccessKeyId)
return oldAccessKeyId, nil
}
func createNewAccessKey(cfg aws.Config) *iam.AccessKey {
fmt.Println("create a new access key")
svc := iam.New(cfg)
params := iam.CreateAccessKeyInput{}
req := svc.CreateAccessKeyRequest(¶ms)
resp, err := req.Send()
if err != nil {
panic(err.Error())
}
fmt.Println("Created new key:", *resp.AccessKey.AccessKeyId)
return resp.AccessKey
}
func updateAWSConfigFile(cfg aws.Config, newCreds iam.AccessKey) {
fmt.Println("update AWS creds in .aws/config")
ini.DefaultHeader = true
current_user, err := user.Current()
if err != nil {
panic(err.Error())
}
config_file := filepath.Join(current_user.HomeDir, ".aws", "config")
data, err := ini.InsensitiveLoad(config_file)
if err != nil {
panic(err.Error())
}
sec, err := data.GetSection("default")
if err != nil {
panic(err.Error())
}
aws_key, err := sec.GetKey("aws_access_key_id")
if err != nil {
panic(err.Error())
}
aws_secret, err := sec.GetKey("aws_secret_access_key")
if err != nil {
panic(err.Error())
}
aws_key.SetValue(*newCreds.AccessKeyId)
aws_secret.SetValue(*newCreds.SecretAccessKey)
err = data.SaveTo(config_file)
if err != nil {
panic(err.Error())
}
}
func deleteOldAccessKey(cfg aws.Config, key string) {
fmt.Println("delete old access key", key)
svc := iam.New(cfg)
params := iam.DeleteAccessKeyInput{AccessKeyId: &key}
req := svc.DeleteAccessKeyRequest(¶ms)
_, err := req.Send()
if err != nil {
panic(err.Error())
}
}
func main() {
kingpin.Parse()
var out io.Writer = ioutil.Discard
if *flagVerbose {
out = os.Stdout
}
logger = log.New(out, "", log.Lshortfile)
logger.Printf("test")
cfg, err := external.LoadDefaultAWSConfig()
if err != nil {
panic("Unable to load SDK config, " + err.Error())
}
oldAccessKeyId, err := getCurrentAccessKey(cfg)
if err != nil {
kingpin.Fatalf(err.Error())
}
newAccessKey := createNewAccessKey(cfg)
updateAWSConfigFile(cfg, *newAccessKey)
deleteOldAccessKey(cfg, oldAccessKeyId)
}