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 const MailboxAccount = "mailbox@"
  24
  25 type Server struct {
  26         // Domain is the second component of a mail address: <local-part@domain.com>.
  27         Domain string
  28
  29         TLSKeyPath  string
  30         TLSCertPath string
  31
  32         // Password for the POP3 mailbox user, mailbox@domain.com.
  33         MailboxPassword string
  34
  35         // Location to store the mail messages.
  36         MaildropPath string
  37
  38         // Blacklisted addresses that should not accept mail.
  39         BlacklistedAddresses []string
  40 }
  41
  42 func (c Config) GetTLSConfig() (*tls.Config, error) {
  43         certs := make([]tls.Certificate, 0, len(c.Servers))
  44         for _, server := range c.Servers {
  45                 if server.TLSCertPath == "" {
  46                         continue
  47                 }
  48
  49                 cert, err := tls.LoadX509KeyPair(server.TLSCertPath, server.TLSKeyPath)
  50                 if err != nil {
  51                         return nil, err
  52                 }
  53                 certs = append(certs, cert)
  54         }
  55
  56         if len(certs) == 0 {
  57                 return nil, nil
  58         }
  59
  60         config := &tls.Config{
  61                 Certificates: certs,
  62         }
  63         config.BuildNameToCertificate()
  64         return config, nil
  65 }