kubernetes/staging/src/k8s.io/cluster-bootstrap/token/util/helpers.go

const validBootstrapTokenChars …

var BootstrapTokenRegexp …

var BootstrapTokenIDRegexp …

var BootstrapGroupRegexp …

// GenerateBootstrapToken generates a new, random Bootstrap Token.
func GenerateBootstrapToken() (string, error) { … }

// randBytes returns a random string consisting of the characters in
// validBootstrapTokenChars, with the length customized by the parameter
func randBytes(length int) (string, error) { … }

// TokenFromIDAndSecret returns the full token which is of the form "{id}.{secret}"
func TokenFromIDAndSecret(id, secret string) string { … }

// IsValidBootstrapToken returns whether the given string is valid as a Bootstrap Token.
// Avoid using BootstrapTokenRegexp.MatchString(token) and instead perform constant-time
// comparisons on the secret.
func IsValidBootstrapToken(token string) bool { … }

// IsValidBootstrapTokenID returns whether the given string is valid as a Bootstrap Token ID and
// in other words satisfies the BootstrapTokenIDRegexp
func IsValidBootstrapTokenID(tokenID string) bool { … }

// BootstrapTokenSecretName returns the expected name for the Secret storing the
// Bootstrap Token in the Kubernetes API.
func BootstrapTokenSecretName(tokenID string) string { … }

// ValidateBootstrapGroupName checks if the provided group name is a valid
// bootstrap group name. Returns nil if valid or a validation error if invalid.
// TODO(dixudx): should be moved to util/secrets
func ValidateBootstrapGroupName(name string) error { … }

// ValidateUsages validates that the passed in string are valid usage strings for bootstrap tokens.
func ValidateUsages(usages []string) error { … }