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Update kubeadmin password for each fresh start
This patch will create a random password and then update the cluster secret for htpasswd. It also add `~/.crc/machine/crc/kubeadmin-password` file which contains created random password so that all commands able to refers it. fixes: #2048
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| package cluster | ||
|
|
||
| import ( | ||
| "crypto/rand" | ||
| "encoding/base64" | ||
| "fmt" | ||
| "math/big" | ||
|
|
||
| "github.com/code-ready/crc/pkg/crc/machine/bundle" | ||
| "github.com/code-ready/crc/pkg/crc/oc" | ||
| "golang.org/x/crypto/bcrypt" | ||
| ) | ||
|
|
||
| // UpdateKubeAdminUserPassword does following | ||
| // - Create and put updated kubeadmin password to ~/.crc/machine/crc/kubeadmin-password | ||
| // - Update the htpasswd secret | ||
| func UpdateKubeAdminUserPassword(kubeAdminPassword string, ocConfig oc.Config, bundle *bundle.CrcBundleInfo) error { | ||
| // In case of cluster started from stopped state. | ||
| if kubeAdminPassword == "" { | ||
| return nil | ||
| } | ||
| hashDeveloperPasswd, err := hashBcrypt("developer") | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| hashKubeAdminPasswd, err := hashBcrypt(kubeAdminPassword) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| base64Data := getBase64(hashDeveloperPasswd, hashKubeAdminPasswd) | ||
|
|
||
| cmdArgs := []string{"patch", "secret", "htpass-secret", "-p", | ||
| fmt.Sprintf(`'{"data":{"htpasswd":"%s"}}'`, base64Data), | ||
| "-n", "openshift-config", "--type", "merge"} | ||
| _, stderr, err := ocConfig.RunOcCommandPrivate(cmdArgs...) | ||
| if err != nil { | ||
| return fmt.Errorf("Failed to update kubeadmin password %v: %s", err, stderr) | ||
| } | ||
| if err := bundle.UpdateKubeadminPassword(kubeAdminPassword); err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // generateRandomPasswordHash generates a hash of a random ASCII password | ||
| // 5char-5char-5char-5char | ||
| // Copied from openshift/installer https://github.com/openshift/installer/blob/master/pkg/asset/password/password.go | ||
| func GenerateRandomPasswordHash(length int) (string, error) { | ||
| const ( | ||
| lowerLetters = "abcdefghijkmnopqrstuvwxyz" | ||
| upperLetters = "ABCDEFGHIJKLMNPQRSTUVWXYZ" | ||
| digits = "23456789" | ||
| all = lowerLetters + upperLetters + digits | ||
| ) | ||
| var password string | ||
| for i := 0; i < length; i++ { | ||
| n, err := rand.Int(rand.Reader, big.NewInt(int64(len(all)))) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| newchar := string(all[n.Int64()]) | ||
| if password == "" { | ||
| password = newchar | ||
| } | ||
| if i < length-1 { | ||
| n, err = rand.Int(rand.Reader, big.NewInt(int64(len(password)+1))) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| j := n.Int64() | ||
| password = password[0:j] + newchar + password[j:] | ||
| } | ||
| } | ||
| pw := []rune(password) | ||
| for _, replace := range []int{5, 11, 17} { | ||
| pw[replace] = '-' | ||
| } | ||
|
|
||
| return string(pw), nil | ||
| } | ||
|
|
||
| func hashBcrypt(password string) (hash string, err error) { | ||
| passwordBytes, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost) | ||
| if err != nil { | ||
| return | ||
| } | ||
| return string(passwordBytes), nil | ||
| } | ||
|
|
||
| func getBase64(developerUserPassword, adminUserPassword string) string { | ||
| s := fmt.Sprintf("developer:%s\nkubeadmin:%s", developerUserPassword, adminUserPassword) | ||
| return base64.StdEncoding.EncodeToString([]byte(s)) | ||
| } |
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