Add Nova get-password support
Add support to get a encrypted administrative password for a server
through a GET on: /v2.1/{tenant_id}/servers/{server_id}/os-server-password
optionally decrypting the password if a private key is supplied.
The same operation with OpenStack CLI is done with:
nova get-password <server_id> [private_key.pem]
diff --git a/openstack/compute/v2/servers/results.go b/openstack/compute/v2/servers/results.go
index f278709..406f689 100644
--- a/openstack/compute/v2/servers/results.go
+++ b/openstack/compute/v2/servers/results.go
@@ -1,10 +1,12 @@
package servers
import (
- "reflect"
+ "crypto/rsa"
+ "encoding/base64"
"fmt"
- "path"
"net/url"
+ "path"
+ "reflect"
"github.com/mitchellh/mapstructure"
"github.com/rackspace/gophercloud"
@@ -82,6 +84,47 @@
gophercloud.Result
}
+// GetPasswordResult represent the result of a get os-server-password operation.
+type GetPasswordResult struct {
+ gophercloud.Result
+}
+
+// ExtractPassword gets the encrypted password.
+// If privateKey != nil the password is decrypted with the private key.
+// If privateKey == nil the encrypted password is returned and can be decrypted with:
+// echo '<pwd>' | base64 -D | openssl rsautl -decrypt -inkey <private_key>
+func (r GetPasswordResult) ExtractPassword(privateKey *rsa.PrivateKey) (string, error) {
+
+ if r.Err != nil {
+ return "", r.Err
+ }
+
+ var response struct {
+ Password string `mapstructure:"password"`
+ }
+
+ err := mapstructure.Decode(r.Body, &response)
+ if err == nil && privateKey != nil && response.Password != "" {
+ return decryptPassword(response.Password, privateKey)
+ }
+ return response.Password, err
+}
+
+func decryptPassword(encryptedPassword string, privateKey *rsa.PrivateKey) (string, error) {
+ b64EncryptedPassword := make([]byte, base64.StdEncoding.DecodedLen(len(encryptedPassword)))
+
+ n, err := base64.StdEncoding.Decode(b64EncryptedPassword, []byte(encryptedPassword))
+ if err != nil {
+ return "", fmt.Errorf("Failed to base64 decode encrypted password: %s", err)
+ }
+ password, err := rsa.DecryptPKCS1v15(nil, privateKey, b64EncryptedPassword[0:n])
+ if err != nil {
+ return "", fmt.Errorf("Failed to decrypt password: %s", err)
+ }
+
+ return string(password), nil
+}
+
// ExtractImageID gets the ID of the newly created server image from the header
func (res CreateImageResult) ExtractImageID() (string, error) {
if res.Err != nil {