/usr/share/pyshared/MoinMoin/mail/sendmail.py is in python-moinmoin 1.9.3-1ubuntu2.
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"""
MoinMoin - email helper functions
@copyright: 2003 Juergen Hermann <jh@web.de>,
2008-2009 MoinMoin:ThomasWaldmann
@license: GNU GPL, see COPYING for details.
"""
import os, re
from email.Header import Header
from MoinMoin import log
logging = log.getLogger(__name__)
from MoinMoin import config
_transdict = {"AT": "@", "DOT": ".", "DASH": "-"}
def encodeAddress(address, charset):
""" Encode email address to enable non ascii names
e.g. '"Jürgen Hermann" <jh@web.de>'. According to the RFC, the name
part should be encoded, the address should not.
@param address: email address, possibly using '"name" <address>' format
@type address: unicode
@param charset: specifying both the charset and the encoding, e.g
quoted printable or base64.
@type charset: email.Charset.Charset instance
@rtype: string
@return: encoded address
"""
assert isinstance(address, unicode)
composite = re.compile(r'(?P<phrase>.*?)(?P<blanks>\s*)\<(?P<addr>.*)\>', re.UNICODE)
match = composite.match(address)
if match:
phrase = match.group('phrase')
try:
str(phrase) # is it pure ascii?
except UnicodeEncodeError:
phrase = phrase.encode(config.charset)
phrase = Header(phrase, charset)
blanks = match.group('blanks')
addr = match.group('addr')
if phrase:
return "%s%s<%s>" % (str(phrase), str(blanks), str(addr))
else:
return str(addr)
else:
# a pure email address, should encode to ascii without problem
return str(address)
def sendmail(request, to, subject, text, mail_from=None):
""" Create and send a text/plain message
Return a tuple of success or error indicator and message.
@param request: the request object
@param to: recipients (list)
@param subject: subject of email (unicode)
@param text: email body text (unicode)
@param mail_from: override default mail_from
@type mail_from: unicode
@rtype: tuple
@return: (is_ok, Description of error or OK message)
"""
import smtplib, socket
from email.Message import Message
from email.Charset import Charset, QP
from email.Utils import formatdate, make_msgid
_ = request.getText
cfg = request.cfg
mail_from = mail_from or cfg.mail_from
logging.debug("send mail, from: %r, subj: %r" % (mail_from, subject))
logging.debug("send mail, to: %r" % (to, ))
if not to:
return (1, _("No recipients, nothing to do"))
subject = subject.encode(config.charset)
# Create a text/plain body using CRLF (see RFC2822)
text = text.replace(u'\n', u'\r\n')
text = text.encode(config.charset)
# Create a message using config.charset and quoted printable
# encoding, which should be supported better by mail clients.
# TODO: check if its really works better for major mail clients
msg = Message()
charset = Charset(config.charset)
charset.header_encoding = QP
charset.body_encoding = QP
msg.set_charset(charset)
# work around a bug in python 2.4.3 and above:
msg.set_payload('=')
if msg.as_string().endswith('='):
text = charset.body_encode(text)
msg.set_payload(text)
# Create message headers
# Don't expose emails addreses of the other subscribers, instead we
# use the same mail_from, e.g. u"Jürgen Wiki <noreply@mywiki.org>"
address = encodeAddress(mail_from, charset)
msg['From'] = address
msg['To'] = address
msg['Date'] = formatdate()
msg['Message-ID'] = make_msgid()
msg['Subject'] = Header(subject, charset)
# See RFC 3834 section 5:
msg['Auto-Submitted'] = 'auto-generated'
if cfg.mail_sendmail:
# Set the BCC. This will be stripped later by sendmail.
msg['BCC'] = ','.join(to)
# Set Return-Path so that it isn't set (generally incorrectly) for us.
msg['Return-Path'] = address
# Send the message
if not cfg.mail_sendmail:
try:
logging.debug("trying to send mail (smtp) via smtp server '%s'" % cfg.mail_smarthost)
host, port = (cfg.mail_smarthost + ':25').split(':')[:2]
server = smtplib.SMTP(host, int(port))
try:
#server.set_debuglevel(1)
if cfg.mail_login:
user, pwd = cfg.mail_login.split()
try: # try to do tls
server.ehlo()
if server.has_extn('starttls'):
server.starttls()
server.ehlo()
logging.debug("tls connection to smtp server established")
except:
logging.debug("could not establish a tls connection to smtp server, continuing without tls")
logging.debug("trying to log in to smtp server using account '%s'" % user)
server.login(user, pwd)
server.sendmail(mail_from, to, msg.as_string())
finally:
try:
server.quit()
except AttributeError:
# in case the connection failed, SMTP has no "sock" attribute
pass
except smtplib.SMTPException, e:
logging.exception("smtp mail failed with an exception.")
return (0, str(e))
except (os.error, socket.error), e:
logging.exception("smtp mail failed with an exception.")
return (0, _("Connection to mailserver '%(server)s' failed: %(reason)s") % {
'server': cfg.mail_smarthost,
'reason': str(e)
})
else:
try:
logging.debug("trying to send mail (sendmail)")
sendmailp = os.popen(cfg.mail_sendmail, "w")
# msg contains everything we need, so this is a simple write
sendmailp.write(msg.as_string())
sendmail_status = sendmailp.close()
if sendmail_status:
logging.error("sendmail failed with status: %s" % str(sendmail_status))
return (0, str(sendmail_status))
except:
logging.exception("sendmail failed with an exception.")
return (0, _("Mail not sent"))
logging.debug("Mail sent OK")
return (1, _("Mail sent OK"))
def encodeSpamSafeEmail(email_address, obfuscation_text=''):
""" Encodes a standard email address to an obfuscated address
@param email_address: mail address to encode.
Known characters and their all-uppercase words translation:
"." -> " DOT "
"@" -> " AT "
"-" -> " DASH "
@param obfuscation_text: optional text to obfuscate the email.
All characters in the string must be alphabetic
and they will be added in uppercase.
"""
address = email_address.lower()
# uppercase letters will be stripped by decodeSpamSafeEmail
for word, sign in _transdict.items():
address = address.replace(sign, ' %s ' % word)
if obfuscation_text.isalpha():
# is the obfuscation_text alphabetic
address = address.replace(' AT ', ' AT %s ' % obfuscation_text.upper())
return address
def decodeSpamSafeEmail(address):
""" Decode obfuscated email address to standard email address
Decode a spam-safe email address in `address` by applying the
following rules:
Known all-uppercase words and their translation:
"DOT" -> "."
"AT" -> "@"
"DASH" -> "-"
Any unknown all-uppercase words or an uppercase letter simply get stripped.
Use that to make it even harder for spam bots!
Blanks (spaces) simply get stripped.
@param address: obfuscated email address string
@rtype: string
@return: decoded email address
"""
email = []
# words are separated by blanks
for word in address.split():
# is it all-uppercase?
if word.isalpha() and word == word.upper():
# strip unknown CAPS words
word = _transdict.get(word, '')
email.append(word)
# return concatenated parts
return ''.join(email)
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