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Ship MailHost with our own TLS/SSL-aware SMTPMailer
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############################################################################## | ||
# | ||
# Copyright (c) 2003 Zope Corporation and Contributors. | ||
# All Rights Reserved. | ||
# | ||
# This software is subject to the provisions of the Zope Public License, | ||
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution. | ||
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED | ||
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS | ||
# FOR A PARTICULAR PURPOSE. | ||
# | ||
############################################################################## | ||
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""" | ||
SMTPMailer with TLS/SSL support | ||
(original code taken from zope.sendmail) | ||
$Id: mailer.py 78981 2007-08-19 06:38:48Z andreasjung $ | ||
""" | ||
__docformat__ = 'restructuredtext' | ||
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import socket | ||
from smtplib import SMTP | ||
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from zope.interface import implements | ||
from zope.sendmail.interfaces import ISMTPMailer | ||
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have_ssl = hasattr(socket, 'ssl') | ||
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class SMTPMailer(object): | ||
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implements(ISMTPMailer) | ||
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smtp = SMTP | ||
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def __init__(self, hostname='localhost', port=25, | ||
username=None, password=None, no_tls=False, force_tls=False): | ||
self.hostname = hostname | ||
self.port = port | ||
self.username = username | ||
self.password = password | ||
self.force_tls = force_tls | ||
self.no_tls = no_tls | ||
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def send(self, fromaddr, toaddrs, message): | ||
connection = self.smtp(self.hostname, str(self.port)) | ||
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# send EHLO | ||
code, response = connection.ehlo() | ||
if code < 200 or code >300: | ||
raise RuntimeError('Error sending EHLO to the SMTP server ' | ||
'(code=%s, response=%s)' % (code, response)) | ||
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# encryption support | ||
have_tls = connection.has_extn('starttls') | ||
if not have_tls and self.force_tls: | ||
raise RuntimeError('TLS is not available but TLS is required') | ||
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if have_tls and have_ssl and not self.no_tls: | ||
connection.starttls() | ||
connection.ehlo() | ||
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if connection.does_esmtp: | ||
if self.username is not None and self.password is not None: | ||
connection.login(self.username, self.password) | ||
elif self.username: | ||
raise RuntimeError('Mailhost does not support ESMTP but a username ' | ||
'is configured') | ||
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connection.sendmail(fromaddr, toaddrs, message) | ||
connection.quit() |