Function NewUserMap

validator.go:24–37

NewUserMap parses the authenticated emails file into a new UserMap TODO (@NickMeves): Audit usage of `unsafe.Pointer` and potentially refactor

(usersFile string, done <-chan bool, onUpdate func())

//
// TODO (@NickMeves): Audit usage of `unsafe.Pointer` and potentially refactor
func NewUserMap(usersFile string, done <-chan bool, onUpdate func()) *UserMap {
	um := &UserMap{usersFile: usersFile}
	m := make(map[string]bool)
	atomic.StorePointer(&um.m, unsafe.Pointer(&m)) // #nosec G103
	if usersFile != "" {
		logger.Printf("using authenticated emails file %s", usersFile)
		watcher.WatchFileForUpdates(usersFile, done, func() {
			um.LoadAuthenticatedEmailsFile()
			onUpdate()
		})
		um.LoadAuthenticatedEmailsFile()
	}
	return um
}

// IsValid checks if an email is allowed
func (um *UserMap) IsValid(email string) (result bool) {