doc/mail/tutorial/smtpserver/smtpserver-8.tac

   1 import os
   2 from zope.interface import implements
   3
   4 from twisted.application import service
   5
   6 application = service.Application("SMTP Server Tutorial")
   7
   8 from twisted.application import internet
   9 from twisted.internet import protocol, defer
  10
  11 from twisted.mail import smtp
  12
  13 class FileMessage(object):
  14     implements(smtp.IMessage)
  15
  16     def __init__(self, fileObj):
  17         self.fileObj = fileObj
  18
  19     def lineReceived(self, line):
  20         self.fileObj.write(line + '\n')
  21
  22     def eomReceived(self):
  23         self.fileObj.close()
  24         return defer.succeed(None)
  25
  26     def connectionLost(self):
  27         self.fileObj.close()
  28         os.remove(self.fileObj.name)
  29
  30 class TutorialDelivery(object):
  31     implements(smtp.IMessageDelivery)
  32     counter = 0
  33
  34     def validateTo(self, user):
  35         fileName = 'tutorial-smtp.' + str(self.counter)
  36         self.counter += 1
  37         return lambda: FileMessage(file(fileName, 'w'))
  38
  39     def validateFrom(self, helo, origin):
  40         return origin
  41
  42     def receivedHeader(self, helo, origin, recipients):
  43         return 'Received: Tutorially.'
  44
  45 class TutorialDeliveryFactory(object):
  46     implements(smtp.IMessageDeliveryFactory)
  47
  48     def getMessageDelivery(self):
  49         return TutorialDelivery()
  50
  51 class TutorialESMTPFactory(protocol.ServerFactory):
  52     protocol = smtp.ESMTP
  53
  54     def buildProtocol(self, addr):
  55         p = self.protocol()
  56         p.deliveryFactory = TutorialDeliveryFactory()
  57         p.factory = self
  58         return p
  59
  60 smtpServerFactory = TutorialESMTPFactory()
  61
  62 smtpServerService = internet.TCPServer(2025, smtpServerFactory)
  63 smtpServerService.setServiceParent(application)