forum/utils/mail.py

   1 import email
   2 import socket
   3 import os
   4 import logging
   5
   6 try:
   7     from email.mime.multipart import MIMEMultipart
   8     from email.mime.text import MIMEText
   9     from email.mime.image import MIMEImage
  10     from email.header import Header
  11 except:
  12     from email.MIMEMultipart import MIMEMultipart
  13     from email.MIMEText import MIMEText
  14     from email.MIMEImage import MIMEImage
  15     from email.Header import Header
  16
  17 from django.core.mail import DNS_NAME
  18 from smtplib import SMTP
  19 from forum import settings
  20 from django.template import loader, Context, Template
  21 from forum.utils.html import sanitize_html
  22 from forum.context import application_settings
  23 from forum.utils.html2text import HTML2Text
  24 from threading import Thread
  25
  26 def send_template_email(recipients, template, context):
  27     t = loader.get_template(template)
  28     context.update(dict(recipients=recipients, settings=settings))
  29     t.render(Context(context))
  30
  31 def create_and_send_mail_messages(messages):
  32     if not settings.EMAIL_HOST:
  33         return
  34
  35     sender = Header(unicode(settings.APP_SHORT_NAME), 'utf-8')
  36     sender.append('<%s>' % unicode(settings.DEFAULT_FROM_EMAIL))
  37     sender = u'%s <%s>' % (unicode(settings.APP_SHORT_NAME), unicode(settings.DEFAULT_FROM_EMAIL))
  38
  39     try:
  40         connection = SMTP(str(settings.EMAIL_HOST), str(settings.EMAIL_PORT),
  41                           local_hostname=DNS_NAME.get_fqdn())
  42
  43         if (bool(settings.EMAIL_USE_TLS)):
  44             connection.ehlo()
  45             connection.starttls()
  46             connection.ehlo()
  47
  48         if settings.EMAIL_HOST_USER and settings.EMAIL_HOST_PASSWORD:
  49             connection.login(str(settings.EMAIL_HOST_USER), str(settings.EMAIL_HOST_PASSWORD))
  50
  51         if sender is None:
  52             sender = str(settings.DEFAULT_FROM_EMAIL)
  53
  54         for recipient, subject, html, text, media in messages:
  55             msgRoot = MIMEMultipart('related')
  56
  57             msgRoot['Subject'] = Header(subject, 'utf-8')
  58             msgRoot['From'] = sender
  59
  60             to = Header(recipient.username, 'utf-8')
  61             to.append('<%s>' % recipient.email)
  62             msgRoot['To'] = to
  63
  64             msgRoot.preamble = 'This is a multi-part message from %s.' % unicode(settings.APP_SHORT_NAME).encode('utf8')
  65
  66             msgAlternative = MIMEMultipart('alternative')
  67             msgRoot.attach(msgAlternative)
  68
  69             msgAlternative.attach(MIMEText(text.encode('utf-8'), _charset='utf-8'))
  70             msgAlternative.attach(MIMEText(html.encode('utf-8'), 'html', _charset='utf-8'))
  71
  72             for alias, location in media.items():
  73                 fp = open(location, 'rb')
  74                 msgImage = MIMEImage(fp.read())
  75                 fp.close()
  76                 msgImage.add_header('Content-ID', '<'+alias+'>')
  77                 msgRoot.attach(msgImage)
  78
  79             try:
  80                 connection.sendmail(sender, [recipient.email], msgRoot.as_string())
  81             except Exception, e:
  82                 logging.error("Couldn't send mail using the sendmail method: %s" % e)
  83
  84         try:
  85             connection.quit()
  86         except socket.sslerror:
  87             connection.close()
  88     except Exception, e:
  89         logging.error('Email sending has failed: %s' % e)