config.go

   1 // mailpopbox
   2 // Copyright 2020 Blue Static <https://www.bluestatic.org>
   3 // This program is free software licensed under the GNU General Public License,
   4 // version 3.0. The full text of the license can be found in LICENSE.txt.
   5 // SPDX-License-Identifier: GPL-3.0-only
   6
   7 package main
   8
   9 import (
  10         "crypto/tls"
  11 )
  12
  13 type Config struct {
  14         SMTPPort int
  15         POP3Port int
  16
  17         // Hostname is the name of the MX server that is running.
  18         Hostname string
  19
  20         Servers []Server
  21 }
  22
  23 type Server struct {
  24         // Domain is the second component of a mail address: <local-part@domain.com>.
  25         Domain string
  26
  27         TLSKeyPath  string
  28         TLSCertPath string
  29
  30         // Password for the POP3 mailbox user, mailbox@domain.com.
  31         MailboxPassword string
  32
  33         // Location to store the mail messages.
  34         MaildropPath string
  35
  36         // Blacklisted addresses that should not accept mail.
  37         BlacklistedAddresses []string
  38 }
  39
  40 func (c Config) GetTLSConfig() (*tls.Config, error) {
  41         certs := make([]tls.Certificate, 0, len(c.Servers))
  42         for _, server := range c.Servers {
  43                 if server.TLSCertPath == "" {
  44                         continue
  45                 }
  46
  47                 cert, err := tls.LoadX509KeyPair(server.TLSCertPath, server.TLSKeyPath)
  48                 if err != nil {
  49                         return nil, err
  50                 }
  51                 certs = append(certs, cert)
  52         }
  53
  54         if len(certs) == 0 {
  55                 return nil, nil
  56         }
  57
  58         config := &tls.Config{
  59                 Certificates: certs,
  60         }
  61         config.BuildNameToCertificate()
  62         return config, nil
  63 }