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access_key.go
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access_key.go
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package iam
import (
"context"
"crypto/hmac"
"crypto/sha256"
"encoding/base64"
"fmt"
"math"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/iam"
"github.com/cloudposse/terraform-provider-awsutils/internal/conns"
"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
"github.com/hashicorp/terraform-plugin-sdk/v2/helper/validation"
)
func ResourceExpiringAccessKey() *schema.Resource {
return &schema.Resource{
Description: `Provides an IAM access key that expires after max_age seconds. This is a set of credentials that allow API requests to be made as an IAM user.`,
Create: resourceAccessKeyCreate,
Read: resourceAccessKeyRead,
Update: resourceAccessKeyUpdate,
Delete: resourceAccessKeyDelete,
CustomizeDiff: resourceAccessKeyDiff,
Importer: &schema.ResourceImporter{
// ListAccessKeys requires UserName field in certain scenarios:
// ValidationError: Must specify userName when calling with non-User credentials
// To prevent import from requiring this extra information, use GetAccessKeyLastUsed.
State: func(d *schema.ResourceData, meta interface{}) ([]*schema.ResourceData, error) {
conn := meta.(*conns.AWSClient).IAMConn
input := &iam.GetAccessKeyLastUsedInput{
AccessKeyId: aws.String(d.Id()),
}
output, err := conn.GetAccessKeyLastUsed(input)
if err != nil {
return nil, fmt.Errorf("error fetching IAM Access Key (%s) username via GetAccessKeyLastUsed: %w", d.Id(), err)
}
if output == nil || output.UserName == nil {
return nil, fmt.Errorf("error fetching IAM Access Key (%s) username via GetAccessKeyLastUsed: empty response", d.Id())
}
d.Set("user", output.UserName)
return []*schema.ResourceData{d}, nil
},
},
Schema: map[string]*schema.Schema{
"create_date": {
Type: schema.TypeString,
Computed: true,
},
"expiration_date": {
Type: schema.TypeString,
Computed: true,
ForceNew: true,
},
"encrypted_secret": {
Type: schema.TypeString,
Computed: true,
},
"encrypted_ses_smtp_password_v4": {
Type: schema.TypeString,
Computed: true,
},
"key_fingerprint": {
Type: schema.TypeString,
Computed: true,
},
"max_age": {
Type: schema.TypeInt,
ForceNew: true,
Optional: true,
Default: math.MaxInt32,
},
"pgp_key": {
Type: schema.TypeString,
ForceNew: true,
Optional: true,
},
"secret": {
Type: schema.TypeString,
Computed: true,
Sensitive: true,
},
"ses_smtp_password_v4": {
Type: schema.TypeString,
Computed: true,
Sensitive: true,
},
"status": {
Type: schema.TypeString,
Optional: true,
Default: iam.StatusTypeActive,
ValidateFunc: validation.StringInSlice(iam.StatusType_Values(), false),
},
"user": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
},
}
}
func resourceAccessKeyDiff(ctx context.Context, d *schema.ResourceDiff, meta interface{}) error {
if d.Id() == "" {
return nil
}
if v, ok := d.GetOk("expiration_date"); ok {
now := time.Now().UTC()
rotationTimestamp, err := time.Parse(time.RFC3339, v.(string))
if err != nil {
return fmt.Errorf("error parsing expiration_date (%s): %s", v.(string), err)
}
if now.After(rotationTimestamp) {
d.SetNewComputed("expiration_date")
}
}
return nil
}
func resourceAccessKeyCreate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*conns.AWSClient).IAMConn
request := &iam.CreateAccessKeyInput{
UserName: aws.String(d.Get("user").(string)),
}
createResp, err := conn.CreateAccessKey(request)
if err != nil {
return fmt.Errorf(
"Error creating access key for user %s: %s",
*request.UserName,
err,
)
}
d.SetId(aws.StringValue(createResp.AccessKey.AccessKeyId))
if createResp.AccessKey == nil || createResp.AccessKey.SecretAccessKey == nil {
return fmt.Errorf("CreateAccessKey response did not contain a Secret Access Key as expected")
}
sesSMTPPasswordV4, err := SessmTPPasswordFromSecretKeySigV4(createResp.AccessKey.SecretAccessKey, meta.(*conns.AWSClient).Region)
if err != nil {
return fmt.Errorf("error getting SES SigV4 SMTP Password from Secret Access Key: %s", err)
}
if v, ok := d.GetOk("pgp_key"); ok {
pgpKey := v.(string)
encryptionKey, err := RetrieveGPGKey(pgpKey)
if err != nil {
return err
}
fingerprint, encrypted, err := EncryptValue(encryptionKey, *createResp.AccessKey.SecretAccessKey, "IAM Access Key Secret")
if err != nil {
return err
}
d.Set("key_fingerprint", fingerprint)
d.Set("encrypted_secret", encrypted)
_, encrypted, err = EncryptValue(encryptionKey, sesSMTPPasswordV4, "SES SMTP password")
if err != nil {
return err
}
d.Set("encrypted_ses_smtp_password_v4", encrypted)
} else {
if err := d.Set("secret", createResp.AccessKey.SecretAccessKey); err != nil {
return err
}
if err := d.Set("ses_smtp_password_v4", sesSMTPPasswordV4); err != nil {
return err
}
}
if v, ok := d.GetOk("status"); ok && v.(string) == iam.StatusTypeInactive {
input := &iam.UpdateAccessKeyInput{
AccessKeyId: aws.String(d.Id()),
Status: aws.String(iam.StatusTypeInactive),
UserName: aws.String(d.Get("user").(string)),
}
_, err := conn.UpdateAccessKey(input)
if err != nil {
return fmt.Errorf("error deactivating IAM Access Key (%s): %w", d.Id(), err)
}
createResp.AccessKey.Status = aws.String(iam.StatusTypeInactive)
}
return resourceAccessKeyReadResult(d, &iam.AccessKeyMetadata{
AccessKeyId: createResp.AccessKey.AccessKeyId,
CreateDate: createResp.AccessKey.CreateDate,
Status: createResp.AccessKey.Status,
UserName: createResp.AccessKey.UserName,
})
}
func resourceAccessKeyRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*conns.AWSClient).IAMConn
request := &iam.ListAccessKeysInput{
UserName: aws.String(d.Get("user").(string)),
}
getResp, err := conn.ListAccessKeys(request)
if err != nil {
if iamerr, ok := err.(awserr.Error); ok && iamerr.Code() == "NoSuchEntity" { // XXX TEST ME
// the user does not exist, so the key can't exist.
d.SetId("")
return nil
}
return fmt.Errorf("Error reading IAM access key: %s", err)
}
for _, key := range getResp.AccessKeyMetadata {
if key.AccessKeyId != nil && *key.AccessKeyId == d.Id() {
return resourceAccessKeyReadResult(d, key)
}
}
// Guess the key isn't around anymore.
d.SetId("")
return nil
}
func resourceAccessKeyReadResult(d *schema.ResourceData, key *iam.AccessKeyMetadata) error {
d.SetId(aws.StringValue(key.AccessKeyId))
if key.CreateDate != nil {
createDate := key.CreateDate
expirationDate := createDate.Add(time.Duration(d.Get("max_age").(int)) * time.Second)
d.Set("create_date", aws.TimeValue(createDate).Format(time.RFC3339))
d.Set("expiration_date", expirationDate.Format(time.RFC3339))
} else {
d.Set("create_date", nil)
d.Set("expiration_date", nil)
}
d.Set("status", key.Status)
d.Set("user", key.UserName)
return nil
}
func resourceAccessKeyUpdate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*conns.AWSClient).IAMConn
if d.HasChange("status") {
if err := resourceAccessKeyStatusUpdate(conn, d); err != nil {
return err
}
}
return resourceAccessKeyRead(d, meta)
}
func resourceAccessKeyDelete(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*conns.AWSClient).IAMConn
request := &iam.DeleteAccessKeyInput{
AccessKeyId: aws.String(d.Id()),
UserName: aws.String(d.Get("user").(string)),
}
if _, err := conn.DeleteAccessKey(request); err != nil {
return fmt.Errorf("Error deleting access key %s: %s", d.Id(), err)
}
return nil
}
func resourceAccessKeyStatusUpdate(conn *iam.IAM, d *schema.ResourceData) error {
request := &iam.UpdateAccessKeyInput{
AccessKeyId: aws.String(d.Id()),
Status: aws.String(d.Get("status").(string)),
UserName: aws.String(d.Get("user").(string)),
}
if _, err := conn.UpdateAccessKey(request); err != nil {
return fmt.Errorf("Error updating access key %s: %s", d.Id(), err)
}
return nil
}
func hmacSignature(key []byte, value []byte) ([]byte, error) {
h := hmac.New(sha256.New, key)
if _, err := h.Write(value); err != nil {
return []byte(""), err
}
return h.Sum(nil), nil
}
func SessmTPPasswordFromSecretKeySigV4(key *string, region string) (string, error) {
if key == nil {
return "", nil
}
const version = byte(0x04)
date := []byte("11111111")
service := []byte("ses")
terminal := []byte("aws4_request")
message := []byte("SendRawEmail")
rawSig, err := hmacSignature([]byte("AWS4"+*key), date)
if err != nil {
return "", err
}
if rawSig, err = hmacSignature(rawSig, []byte(region)); err != nil {
return "", err
}
if rawSig, err = hmacSignature(rawSig, service); err != nil {
return "", err
}
if rawSig, err = hmacSignature(rawSig, terminal); err != nil {
return "", err
}
if rawSig, err = hmacSignature(rawSig, message); err != nil {
return "", err
}
versionedSig := make([]byte, 0, len(rawSig)+1)
versionedSig = append(versionedSig, version)
versionedSig = append(versionedSig, rawSig...)
return base64.StdEncoding.EncodeToString(versionedSig), nil
}