diff options
Diffstat (limited to 'Mailman/Handlers/CookHeaders.py')
| -rwxr-xr-x | Mailman/Handlers/CookHeaders.py | 73 |
1 files changed, 52 insertions, 21 deletions
diff --git a/Mailman/Handlers/CookHeaders.py b/Mailman/Handlers/CookHeaders.py index a2096172..150b4922 100755 --- a/Mailman/Handlers/CookHeaders.py +++ b/Mailman/Handlers/CookHeaders.py @@ -1,4 +1,4 @@ -# Copyright (C) 1998-2011 by the Free Software Foundation, Inc. +# Copyright (C) 1998-2013 by the Free Software Foundation, Inc. # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License @@ -64,13 +64,20 @@ def uheader(mlist, s, header_name=None, continuation_ws='\t', maxlinelen=None): charset = 'us-ascii' return Header(s, charset, maxlinelen, header_name, continuation_ws) +def change_header(name, value, mlist, msg, msgdata, delete=True, repl=True): + if mm_cfg.ALLOW_FROM_IS_LIST and mlist.from_is_list == 2: + msgdata.setdefault('add_header', {})[name] = value + elif repl or not msg.has_key(name): + if delete: + del msg[name] + msg[name] = value + def process(mlist, msg, msgdata): # Set the "X-Ack: no" header if noack flag is set. if msgdata.get('noack'): - del msg['x-ack'] - msg['X-Ack'] = 'no' + change_header('X-Ack', 'no', mlist, msg, msgdata) # Because we're going to modify various important headers in the email # message, we want to save some of the information in the msgdata # dictionary for later. Specifically, the sender header will get waxed, @@ -87,7 +94,8 @@ def process(mlist, msg, msgdata): pass # Mark message so we know we've been here, but leave any existing # X-BeenThere's intact. - msg['X-BeenThere'] = mlist.GetListEmail() + change_header('X-BeenThere', mlist.GetListEmail(), + mlist, msg, msgdata, delete=False) # Add Precedence: and other useful headers. None of these are standard # and finding information on some of them are fairly difficult. Some are # just common practice, and we'll add more here as they become necessary. @@ -101,12 +109,32 @@ def process(mlist, msg, msgdata): # known exploits in a particular version of Mailman and we know a site is # using such an old version, they may be vulnerable. It's too easy to # edit the code to add a configuration variable to handle this. - if not msg.has_key('x-mailman-version'): - msg['X-Mailman-Version'] = mm_cfg.VERSION + change_header('X-Mailman-Version', mm_cfg.VERSION, + mlist, msg, msgdata, repl=False) # We set "Precedence: list" because this is the recommendation from the # sendmail docs, the most authoritative source of this header's semantics. - if not msg.has_key('precedence'): - msg['Precedence'] = 'list' + change_header('Precedence', 'list', + mlist, msg, msgdata, repl=False) + # Do we change the from so the list takes ownership of the email + if mm_cfg.ALLOW_FROM_IS_LIST and mlist.from_is_list: + realname, email = parseaddr(msg['from']) + replies = getaddresses(msg.get('reply-to', '')) + reply_addrs = [x[1].lower() for x in replies] + if reply_addrs: + if email.lower() not in reply_addrs: + rt = msg['reply-to'] + ', ' + msg['from'] + else: + rt = msg['reply-to'] + else: + rt = msg['from'] + change_header('Reply-To', rt, mlist, msg, msgdata) + change_header('From', + formataddr(('%s via %s' % (realname, mlist.real_name), + mlist.GetListEmail())), + mlist, msg, msgdata) + if mlist.from_is_list != 2: + del msg['sender'] + #MAS ?? mlist.include_sender_header = 0 # Reply-To: munging. Do not do this if the message is "fast tracked", # meaning it is internally crafted and delivered to a specific user. BAW: # Yuck, I really hate this feature but I've caved under the sheer pressure @@ -142,12 +170,14 @@ def process(mlist, msg, msgdata): if mlist.reply_goes_to_list == 1: i18ndesc = uheader(mlist, mlist.description, 'Reply-To') add((str(i18ndesc), mlist.GetListEmail())) - del msg['reply-to'] # Don't put Reply-To: back if there's nothing to add! if new: # Preserve order - msg['Reply-To'] = COMMASPACE.join( - [formataddr(pair) for pair in new]) + change_header('Reply-To', + COMMASPACE.join([formataddr(pair) for pair in new]), + mlist, msg, msgdata) + else: + del msg['reply-to'] # The To field normally contains the list posting address. However # when messages are fully personalized, that header will get # overwritten with the address of the recipient. We need to get the @@ -157,9 +187,11 @@ def process(mlist, msg, msgdata): # Cc header. BAW: should we force it into a Reply-To header in the # above code? # Also skip Cc if this is an anonymous list as list posting address - # is already in From and Reply-To in this case. + # is already in From and Reply-To in this case and similarly for + # an 'author is list' list. if mlist.personalize == 2 and mlist.reply_goes_to_list <> 1 \ - and not mlist.anonymous_list: + and not mlist.anonymous_list and not (mlist.from_is_list and + mm_cfg.ALLOW_FROM_IS_LIST): # Watch out for existing Cc headers, merge, and remove dups. Note # that RFC 2822 says only zero or one Cc header is allowed. new = [] @@ -168,6 +200,9 @@ def process(mlist, msg, msgdata): add(pair) i18ndesc = uheader(mlist, mlist.description, 'Cc') add((str(i18ndesc), mlist.GetListEmail())) + # We don't worry about what AvoidDuplicates may have done with a + # Cc: header or using change_header here since we never get here + # if from_is_list is allowed and True. del msg['Cc'] msg['Cc'] = COMMASPACE.join([formataddr(pair) for pair in new]) # Add list-specific headers as defined in RFC 2369 and RFC 2919, but only @@ -191,8 +226,7 @@ def process(mlist, msg, msgdata): # without desc we need to ensure the MUST brackets listid_h = '<%s>' % listid # We always add a List-ID: header. - del msg['list-id'] - msg['List-Id'] = listid_h + change_header('List-Id', listid_h, mlist, msg, msgdata) # For internally crafted messages, we also add a (nonstandard), # "X-List-Administrivia: yes" header. For all others (i.e. those coming # from list posts), we add a bunch of other RFC 2369 headers. @@ -219,13 +253,12 @@ def process(mlist, msg, msgdata): # First we delete any pre-existing headers because the RFC permits only # one copy of each, and we want to be sure it's ours. for h, v in headers.items(): - del msg[h] # Wrap these lines if they are too long. 78 character width probably # shouldn't be hardcoded, but is at least text-MUA friendly. The # adding of 2 is for the colon-space separator. if len(h) + 2 + len(v) > 78: v = CONTINUATION.join(v.split(', ')) - msg[h] = v + change_header(h, v, mlist, msg, msgdata) @@ -302,8 +335,7 @@ def prefix_subject(mlist, msg, msgdata): h = u' '.join([prefix, subject]) h = h.encode('us-ascii') h = uheader(mlist, h, 'Subject', continuation_ws=ws) - del msg['subject'] - msg['Subject'] = h + change_header('Subject', h, mlist, msg, msgdata) ss = u' '.join([recolon, subject]) ss = ss.encode('us-ascii') ss = uheader(mlist, ss, 'Subject', continuation_ws=ws) @@ -321,8 +353,7 @@ def prefix_subject(mlist, msg, msgdata): # TK: Subject is concatenated and unicode string. subject = subject.encode(cset, 'replace') h.append(subject, cset) - del msg['subject'] - msg['Subject'] = h + change_header('Subject', h, mlist, msg, msgdata) ss = uheader(mlist, recolon, 'Subject', continuation_ws=ws) ss.append(subject, cset) msgdata['stripped_subject'] = ss |