doc/mail/tutorial/smtpserver/smtpserver-5.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 smtpServerFactory = protocol.ServerFactory()
  12
  13 from twisted.mail import smtp
  14
  15 class FileMessage(object):
  16     implements(smtp.IMessage)
  17
  18     def __init__(self, fileObj):
  19         self.fileObj = fileObj
  20
  21     def lineReceived(self, line):
  22         self.fileObj.write(line + '\n')
  23
  24     def eomReceived(self):
  25         self.fileObj.close()
  26         return defer.succeed(None)
  27
  28     def connectionLost(self):
  29         self.fileObj.close()
  30         os.remove(self.fileObj.name)
  31
  32 class TutorialESMTP(smtp.ESMTP):
  33     counter = 0
  34
  35     def validateTo(self, user):
  36         fileName = 'tutorial-smtp.' + str(self.counter)
  37         self.counter += 1
  38         return lambda: FileMessage(file(fileName, 'w'))
  39
  40     def validateFrom(self, helo, origin):
  41         return origin
  42
  43     def receivedHeader(self, helo, origin, recipients):
  44         return 'Received: Tutorially.'
  45
  46
  47 smtpServerFactory.protocol = TutorialESMTP
  48
  49 smtpServerService = internet.TCPServer(2025, smtpServerFactory)
  50 smtpServerService.setServiceParent(application)