smtp/server.go

   1 package smtp
   2
   3 import (
   4         "crypto/tls"
   5         "net"
   6         "net/mail"
   7         "time"
   8 )
   9
  10 type ReplyLine struct {
  11         Code    int
  12         Message string
  13 }
  14
  15 var (
  16         ReplyOK          = ReplyLine{250, "OK"}
  17         ReplyBadSyntax   = ReplyLine{501, "syntax error"}
  18         ReplyBadSequence = ReplyLine{503, "bad sequence of commands"}
  19         ReplyBadMailbox  = ReplyLine{550, "mailbox unavailable"}
  20 )
  21
  22 type Envelope struct {
  23         RemoteAddr net.Addr
  24         EHLO       string
  25         MailFrom   mail.Address
  26         RcptTo     []mail.Address
  27         Data       []byte
  28         Received   time.Time
  29         ID         string
  30 }
  31
  32 type Server interface {
  33         Name() string
  34         TLSConfig() *tls.Config
  35         OnEHLO() *ReplyLine
  36         VerifyAddress(mail.Address) ReplyLine
  37         OnMessageDelivered(Envelope) *ReplyLine
  38 }
  39
  40 type EmptyServerCallbacks struct{}
  41
  42 func (*EmptyServerCallbacks) TLSConfig() *tls.Config {
  43         return nil
  44 }
  45
  46 func (*EmptyServerCallbacks) OnEHLO() *ReplyLine {
  47         return nil
  48 }
  49
  50 func (*EmptyServerCallbacks) VerifyAddress(mail.Address) ReplyLine {
  51         return ReplyOK
  52 }
  53
  54 func (*EmptyServerCallbacks) OnMessageDelivered(Envelope) *ReplyLine {
  55         return nil
  56 }