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Diffstat (limited to 'mailman/rules/implicit_dest.py')
| -rw-r--r-- | mailman/rules/implicit_dest.py | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/mailman/rules/implicit_dest.py b/mailman/rules/implicit_dest.py deleted file mode 100644 index 3ddffa2cf..000000000 --- a/mailman/rules/implicit_dest.py +++ /dev/null @@ -1,99 +0,0 @@ -# Copyright (C) 2007-2009 by the Free Software Foundation, Inc. -# -# This file is part of GNU Mailman. -# -# GNU Mailman 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 3 of the License, or (at your option) -# any later version. -# -# GNU Mailman 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 -# GNU Mailman. If not, see <http://www.gnu.org/licenses/>. - -"""The implicit destination rule.""" - -from __future__ import absolute_import, unicode_literals - -__metaclass__ = type -__all__ = [ - 'ImplicitDestination', - ] - - -import re -from email.utils import getaddresses -from zope.interface import implements - -from mailman.i18n import _ -from mailman.interfaces.rules import IRule - - - -class ImplicitDestination: - """The implicit destination rule.""" - implements(IRule) - - name = 'implicit-dest' - description = _('Catch messages with implicit destination.') - record = True - - def check(self, mlist, msg, msgdata): - """See `IRule`.""" - # Implicit destination checking must be enabled in the mailing list. - if not mlist.require_explicit_destination: - return False - # Messages gated from NNTP will always have an implicit destination so - # are never checked. - if msgdata.get('fromusenet'): - return False - # Calculate the list of acceptable aliases. If the alias starts with - # a caret (i.e. ^), then it's a regular expression to match against. - aliases = set() - alias_patterns = set() - for alias in mlist.acceptable_aliases.splitlines(): - alias = alias.strip().lower() - if alias.startswith('^'): - alias_patterns.add(alias) - elif '@' in alias: - aliases.add(alias) - else: - # This is not a regular expression, nor a fully-qualified - # email address, so skip it. - pass - # Add the list's posting address, i.e. the explicit address, to the - # set of acceptable aliases. - aliases.add(mlist.posting_address) - # Look at all the recipients. If the recipient is any acceptable - # alias (or the explicit posting address), then this rule does not - # match. If not, then add it to the set of recipients we'll check - # against the alias patterns later. - recipients = set() - for header in ('to', 'cc', 'resent-to', 'resent-cc'): - for fullname, address in getaddresses(msg.get_all(header, [])): - address = address.lower() - if address in aliases: - return False - recipients.add(address) - # Now for all alias patterns, see if any of the recipients matches a - # pattern. If so, then this rule does not match. - for pattern in alias_patterns: - escaped = re.escape(pattern) - for recipient in recipients: - try: - if re.match(pattern, recipient, re.IGNORECASE): - return False - except re.error: - # The pattern is a malformed regular expression. Try - # matching again with the pattern escaped. - try: - if re.match(escaped, recipient, re.IGNORECASE): - return False - except re.error: - pass - # Nothing matched. - return True |