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77 lines
2.3 KiB
Go
77 lines
2.3 KiB
Go
package storageos
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import (
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"errors"
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"regexp"
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)
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const (
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// IDFormat are the characters allowed to represent an ID.
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IDFormat = `[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}`
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// NameFormat are the characters allowed to represent a name.
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NameFormat = `[a-zA-Z0-9][a-zA-Z0-9~_.-]+`
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)
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var (
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// IDPattern is a regular expression to validate a unique id against the
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// collection of restricted characters.
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IDPattern = regexp.MustCompile(`^` + IDFormat + `$`)
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// NamePattern is a regular expression to validate names against the
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// collection of restricted characters.
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NamePattern = regexp.MustCompile(`^` + NameFormat + `$`)
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// ErrNoRef is given when the reference given is invalid.
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ErrNoRef = errors.New("no ref provided or incorrect format")
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// ErrNoNamespace is given when the namespace given is invalid.
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ErrNoNamespace = errors.New("no namespace provided or incorrect format")
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)
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// ValidateNamespaceAndRef returns true if both the namespace and ref are valid.
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func ValidateNamespaceAndRef(namespace, ref string) error {
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if !IsUUID(ref) && !IsName(ref) {
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return ErrNoRef
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}
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if !IsName(namespace) {
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return ErrNoNamespace
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}
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return nil
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}
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// ValidateNamespace returns true if the namespace uses a valid name.
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func ValidateNamespace(namespace string) error {
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if !IsName(namespace) {
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return ErrNoNamespace
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}
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return nil
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}
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// IsUUID returns true if the string input is a valid UUID string.
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func IsUUID(s string) bool {
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return IDPattern.MatchString(s)
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}
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// IsName returns true if the string input is a valid Name string.
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func IsName(s string) bool {
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return NamePattern.MatchString(s)
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}
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// namespacedPath checks for valid input and returns api path for a namespaced
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// objectType. Use namespacedRefPath for objects.
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func namespacedPath(namespace, objectType string) (string, error) {
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if err := ValidateNamespace(namespace); err != nil {
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return "", err
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}
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return "/namespaces/" + namespace + "/" + objectType, nil
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}
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// namespacedRefPath checks for valid input and returns api path for a single
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// namespaced object. Use namespacedPath for objects type path.
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func namespacedRefPath(namespace, objectType, ref string) (string, error) {
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if err := ValidateNamespaceAndRef(namespace, ref); err != nil {
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return "", err
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}
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return "/namespaces/" + namespace + "/" + objectType + "/" + ref, nil
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}
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