package main import ( "errors" "fmt" "os" "strings" "git.tilde.town/tildetown/town/email" ) const emailText = `hello! You (hopefully) requested to add a new public key to your tilde.town account. If you didn't, feel free to ignore this email (or report it to an admin). If you did, here is your auth code: %s To use this code, please open a terminal and run: ssh help@tilde.town Follow the instructions there to add your new key and restore access to your account. best, ~vilmibm` func loadPassword() (string, error) { f, err := os.Open("/town/docs/smtp_help.pw") if err != nil { return "", fmt.Errorf("could not open smtp password file: %w", err) } pw := make([]byte, 100) n, err := f.Read(pw) if err != nil { return "", fmt.Errorf("could not read smtp password file: %w", err) } if n == 0 { return "", errors.New("smtp password file was empty") } return strings.TrimSpace(string(pw[0:n])), nil } func sendAuthCodeEmail(ac AuthCode) error { pw, err := loadPassword() if err != nil { return err } body := fmt.Sprintf(emailText, ac.Code) mailer := email.NewExternalMailer(pw) return mailer.Send( ac.Email, "Adding a new tilde.town public key", body) }