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Diffstat (limited to 'Mailman/Handlers/AvoidDuplicates.py')
| -rw-r--r-- | Mailman/Handlers/AvoidDuplicates.py | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/Mailman/Handlers/AvoidDuplicates.py b/Mailman/Handlers/AvoidDuplicates.py deleted file mode 100644 index a652906a9..000000000 --- a/Mailman/Handlers/AvoidDuplicates.py +++ /dev/null @@ -1,93 +0,0 @@ -# Copyright (C) 2002-2007 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 -# as published by the Free Software Foundation; either version 2 -# of the License, or (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, -# USA. - -"""If the user wishes it, do not send duplicates of the same message. - -This module keeps an in-memory dictionary of Message-ID: and recipient pairs. -If a message with an identical Message-ID: is about to be sent to someone who -has already received a copy, we either drop the message, add a duplicate -warning header, or pass it through, depending on the user's preferences. -""" - -from email.Utils import getaddresses, formataddr -from Mailman.configuration import config - -COMMASPACE = ', ' - - - -def process(mlist, msg, msgdata): - recips = msgdata.get('recips') - # Short circuit - if not recips: - return - # Seed this set with addresses we don't care about dup avoiding. - listaddrs = set((mlist.posting_address, - mlist.bounces_address, - mlist.owner_address, - mlist.request_address)) - explicit_recips = listaddrs.copy() - # Figure out the set of explicit recipients - cc_addresses = {} - for header in ('to', 'cc', 'resent-to', 'resent-cc'): - addrs = getaddresses(msg.get_all(header, [])) - header_addresses = dict((addr, formataddr((name, addr))) - for name, addr in addrs - if addr) - if header == 'cc': - # Yes, it's possible that an address is mentioned in multiple CC - # headers using different names. In that case, the last real name - # will win, but that doesn't seem like such a big deal. Besides, - # how else would you chose? - cc_addresses.update(header_addresses) - # Ignore the list addresses for purposes of dup avoidance. - explicit_recips |= set(header_addresses) - # Now strip out the list addresses - explicit_recips -= listaddrs - if not explicit_recips: - # No one was explicitly addressed, so we can't do any dup collapsing - return - newrecips = set() - for r in recips: - # If this recipient is explicitly addressed... - if r in explicit_recips: - send_duplicate = True - # If the member wants to receive duplicates, or if the recipient - # is not a member at all, they will get a copy. - # header. - member = mlist.members.get_member(r) - if member and not member.receive_list_copy: - send_duplicate = False - # We'll send a duplicate unless the user doesn't wish it. If - # personalization is enabled, the add-dupe-header flag will add a - # X-Mailman-Duplicate: yes header for this user's message. - if send_duplicate: - msgdata.setdefault('add-dup-header', set()).add(r) - newrecips.add(r) - elif r in cc_addresses: - del cc_addresses[r] - else: - # Otherwise, this is the first time they've been in the recips - # list. Add them to the newrecips list and flag them as having - # received this message. - newrecips.add(r) - # Set the new list of recipients. XXX recips should always be a set. - msgdata['recips'] = list(newrecips) - # RFC 2822 specifies zero or one CC header - if cc_addresses: - del msg['cc'] - msg['CC'] = COMMASPACE.join(cc_addresses.values()) |