mirror of https://github.com/k3s-io/k3s
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
117 lines
3.3 KiB
117 lines
3.3 KiB
package nodepassword
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/k3s-io/k3s/pkg/authenticator/hash"
|
|
"github.com/k3s-io/k3s/pkg/passwd"
|
|
"github.com/k3s-io/k3s/pkg/version"
|
|
"github.com/pkg/errors"
|
|
coreclient "github.com/rancher/wrangler/pkg/generated/controllers/core/v1"
|
|
"github.com/sirupsen/logrus"
|
|
v1 "k8s.io/api/core/v1"
|
|
apierrors "k8s.io/apimachinery/pkg/api/errors"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
)
|
|
|
|
var (
|
|
// hasher provides the algorithm for generating and verifying hashes
|
|
hasher = hash.NewSCrypt()
|
|
)
|
|
|
|
func getSecretName(nodeName string) string {
|
|
return strings.ToLower(nodeName + ".node-password." + version.Program)
|
|
}
|
|
|
|
func verifyHash(secretClient coreclient.SecretClient, nodeName, pass string) error {
|
|
name := getSecretName(nodeName)
|
|
secret, err := secretClient.Get(metav1.NamespaceSystem, name, metav1.GetOptions{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if hash, ok := secret.Data["hash"]; ok {
|
|
if err := hasher.VerifyHash(string(hash), pass); err != nil {
|
|
return errors.Wrapf(err, "unable to verify hash for node '%s'", nodeName)
|
|
}
|
|
return nil
|
|
}
|
|
return fmt.Errorf("unable to locate hash data for node secret '%s'", name)
|
|
}
|
|
|
|
// Ensure will verify a node-password secret if it exists, otherwise it will create one
|
|
func Ensure(secretClient coreclient.SecretClient, nodeName, pass string) error {
|
|
if err := verifyHash(secretClient, nodeName, pass); !apierrors.IsNotFound(err) {
|
|
return err
|
|
}
|
|
|
|
hash, err := hasher.CreateHash(pass)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "unable to create hash for node '%s'", nodeName)
|
|
}
|
|
|
|
immutable := true
|
|
_, err = secretClient.Create(&v1.Secret{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: getSecretName(nodeName),
|
|
Namespace: metav1.NamespaceSystem,
|
|
},
|
|
Immutable: &immutable,
|
|
Data: map[string][]byte{"hash": []byte(hash)},
|
|
})
|
|
if apierrors.IsAlreadyExists(err) {
|
|
return verifyHash(secretClient, nodeName, pass)
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Delete will remove a node-password secret
|
|
func Delete(secretClient coreclient.SecretClient, nodeName string) error {
|
|
return secretClient.Delete(metav1.NamespaceSystem, getSecretName(nodeName), &metav1.DeleteOptions{})
|
|
}
|
|
|
|
// MigrateFile moves password file entries to secrets
|
|
func MigrateFile(secretClient coreclient.SecretClient, nodeClient coreclient.NodeClient, passwordFile string) error {
|
|
_, err := os.Stat(passwordFile)
|
|
if os.IsNotExist(err) {
|
|
return nil
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
passwd, err := passwd.Read(passwordFile)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
nodeNames := []string{}
|
|
nodeList, _ := nodeClient.List(metav1.ListOptions{})
|
|
if nodeList != nil {
|
|
for _, node := range nodeList.Items {
|
|
nodeNames = append(nodeNames, node.Name)
|
|
}
|
|
}
|
|
if len(nodeNames) == 0 {
|
|
nodeNames = append(nodeNames, passwd.Users()...)
|
|
}
|
|
|
|
logrus.Infof("Migrating node password entries from '%s'", passwordFile)
|
|
ensured := int64(0)
|
|
start := time.Now()
|
|
for _, nodeName := range nodeNames {
|
|
if pass, ok := passwd.Pass(nodeName); ok {
|
|
if err := Ensure(secretClient, nodeName, pass); err != nil {
|
|
logrus.Warn(errors.Wrapf(err, "error migrating node password entry for node '%s'", nodeName))
|
|
} else {
|
|
ensured++
|
|
}
|
|
}
|
|
}
|
|
ms := time.Since(start).Milliseconds()
|
|
logrus.Infof("Migrated %d node password entries in %d milliseconds, average %d ms", ensured, ms, ms/ensured)
|
|
return os.Remove(passwordFile)
|
|
}
|