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# Copyright (C) 1998-2013 by the Free Software Foundation, Inc.
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# Copyright (C) 1998-2011 by the Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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charset = 'us-ascii'
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return Header(s, charset, maxlinelen, header_name, continuation_ws)
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def change_header(name, value, mlist, msg, msgdata, delete=True, repl=True):
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if mm_cfg.ALLOW_FROM_IS_LIST and mlist.from_is_list == 2:
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msgdata.setdefault('add_header', {})[name] = value
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elif repl or not msg.has_key(name):
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def process(mlist, msg, msgdata):
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# Set the "X-Ack: no" header if noack flag is set.
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if msgdata.get('noack'):
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change_header('X-Ack', 'no', mlist, msg, msgdata)
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# Because we're going to modify various important headers in the email
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# message, we want to save some of the information in the msgdata
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# dictionary for later. Specifically, the sender header will get waxed,
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# Mark message so we know we've been here, but leave any existing
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# X-BeenThere's intact.
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change_header('X-BeenThere', mlist.GetListEmail(),
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mlist, msg, msgdata, delete=False)
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msg['X-BeenThere'] = mlist.GetListEmail()
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# Add Precedence: and other useful headers. None of these are standard
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# and finding information on some of them are fairly difficult. Some are
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# just common practice, and we'll add more here as they become necessary.
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# known exploits in a particular version of Mailman and we know a site is
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# using such an old version, they may be vulnerable. It's too easy to
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# edit the code to add a configuration variable to handle this.
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change_header('X-Mailman-Version', mm_cfg.VERSION,
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mlist, msg, msgdata, repl=False)
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if not msg.has_key('x-mailman-version'):
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msg['X-Mailman-Version'] = mm_cfg.VERSION
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# We set "Precedence: list" because this is the recommendation from the
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# sendmail docs, the most authoritative source of this header's semantics.
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change_header('Precedence', 'list',
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mlist, msg, msgdata, repl=False)
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# Do we change the from so the list takes ownership of the email
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if mm_cfg.ALLOW_FROM_IS_LIST and mlist.from_is_list:
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realname, email = parseaddr(msg['from'])
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replies = getaddresses(msg.get('reply-to', ''))
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reply_addrs = [x[1].lower() for x in replies]
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if email.lower() not in reply_addrs:
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rt = msg['reply-to'] + ', ' + msg['from']
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change_header('Reply-To', rt, mlist, msg, msgdata)
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change_header('From',
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formataddr(('%s via %s' % (realname, mlist.real_name),
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mlist.GetListEmail())),
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if mlist.from_is_list != 2:
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#MAS ?? mlist.include_sender_header = 0
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if not msg.has_key('precedence'):
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msg['Precedence'] = 'list'
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# Reply-To: munging. Do not do this if the message is "fast tracked",
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# meaning it is internally crafted and delivered to a specific user. BAW:
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# Yuck, I really hate this feature but I've caved under the sheer pressure
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if mlist.reply_goes_to_list == 1:
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i18ndesc = uheader(mlist, mlist.description, 'Reply-To')
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add((str(i18ndesc), mlist.GetListEmail()))
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# Don't put Reply-To: back if there's nothing to add!
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change_header('Reply-To',
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COMMASPACE.join([formataddr(pair) for pair in new]),
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msg['Reply-To'] = COMMASPACE.join(
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[formataddr(pair) for pair in new])
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# The To field normally contains the list posting address. However
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# when messages are fully personalized, that header will get
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# overwritten with the address of the recipient. We need to get the
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# Cc header. BAW: should we force it into a Reply-To header in the
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# Also skip Cc if this is an anonymous list as list posting address
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# is already in From and Reply-To in this case and similarly for
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# an 'author is list' list.
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# is already in From and Reply-To in this case.
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if mlist.personalize == 2 and mlist.reply_goes_to_list <> 1 \
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and not mlist.anonymous_list and not (mlist.from_is_list and
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mm_cfg.ALLOW_FROM_IS_LIST):
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and not mlist.anonymous_list:
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# Watch out for existing Cc headers, merge, and remove dups. Note
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# that RFC 2822 says only zero or one Cc header is allowed.
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i18ndesc = uheader(mlist, mlist.description, 'Cc')
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add((str(i18ndesc), mlist.GetListEmail()))
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# We don't worry about what AvoidDuplicates may have done with a
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# Cc: header or using change_header here since we never get here
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# if from_is_list is allowed and True.
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msg['Cc'] = COMMASPACE.join([formataddr(pair) for pair in new])
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# Add list-specific headers as defined in RFC 2369 and RFC 2919, but only
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# without desc we need to ensure the MUST brackets
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listid_h = '<%s>' % listid
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# We always add a List-ID: header.
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change_header('List-Id', listid_h, mlist, msg, msgdata)
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msg['List-Id'] = listid_h
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# For internally crafted messages, we also add a (nonstandard),
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# "X-List-Administrivia: yes" header. For all others (i.e. those coming
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# from list posts), we add a bunch of other RFC 2369 headers.
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# First we delete any pre-existing headers because the RFC permits only
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# one copy of each, and we want to be sure it's ours.
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for h, v in headers.items():
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# Wrap these lines if they are too long. 78 character width probably
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# shouldn't be hardcoded, but is at least text-MUA friendly. The
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# adding of 2 is for the colon-space separator.
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if len(h) + 2 + len(v) > 78:
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v = CONTINUATION.join(v.split(', '))
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change_header(h, v, mlist, msg, msgdata)
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h = u' '.join([prefix, subject])
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h = h.encode('us-ascii')
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h = uheader(mlist, h, 'Subject', continuation_ws=ws)
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change_header('Subject', h, mlist, msg, msgdata)
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ss = u' '.join([recolon, subject])
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ss = ss.encode('us-ascii')
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ss = uheader(mlist, ss, 'Subject', continuation_ws=ws)
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# TK: Subject is concatenated and unicode string.
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subject = subject.encode(cset, 'replace')
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h.append(subject, cset)
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change_header('Subject', h, mlist, msg, msgdata)
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ss = uheader(mlist, recolon, 'Subject', continuation_ws=ws)
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ss.append(subject, cset)
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msgdata['stripped_subject'] = ss
added
removed
Mailman/Handlers/CookHeaders.py
