# Copyright (C) 2007-2016 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 . """Membership related rules.""" import re from mailman import public from mailman.core.i18n import _ from mailman.interfaces.action import Action from mailman.interfaces.bans import IBanManager from mailman.interfaces.member import MemberRole from mailman.interfaces.rules import IRule from mailman.interfaces.usermanager import IUserManager from zope.component import getUtility from zope.interface import implementer @public @implementer(IRule) class MemberModeration: """The member moderation rule.""" name = 'member-moderation' description = _('Match messages sent by moderated members.') record = True def check(self, mlist, msg, msgdata): """See `IRule`.""" user_manager = getUtility(IUserManager) # The MemberModeration rule is unconditionally false if any of # the senders are banned. for sender in msg.senders: if IBanManager(mlist).is_banned(sender): return False for sender in msg.senders: # Check for subscribed members linked to the address. member = mlist.members.get_member(sender) if member is None: user = user_manager.get_user(sender) if user is not None: for address in user.addresses: if mlist.members.get_member(address.email) is not None: member = mlist.members.get_member(address.email) if member is None: return False action = (mlist.default_member_action if member.moderation_action is None else member.moderation_action) if action is Action.defer: # The regular moderation rules apply. return False elif action is not None: # We must stringify the moderation action so that # it can be stored in the pending request table. msgdata['moderation_action'] = action.name msgdata['moderation_sender'] = sender msgdata.setdefault('moderation_reasons', []).append( # This will get translated at the point of use. 'The message comes from a moderated member') return True # The sender is not a member so this rule does not match. return False def _record_action(msgdata, action, sender, reason): msgdata['moderation_action'] = action msgdata['moderation_sender'] = sender msgdata.setdefault('moderation_reasons', []).append(reason) @public @implementer(IRule) class NonmemberModeration: """The nonmember moderation rule.""" name = 'nonmember-moderation' description = _('Match messages sent by nonmembers.') record = True def check(self, mlist, msg, msgdata): """See `IRule`.""" user_manager = getUtility(IUserManager) # Initial check. If any of the senders are banned, we bail. for sender in msg.senders: if IBanManager(mlist).is_banned(sender): return False # First ensure that all senders are already either members or # nonmembers. If they are not subscribed in some role to the mailing # list, make them nonmembers. # Maintain a record of which senders have linked subscribed users. found_linked_membership = set() for sender in msg.senders: member = mlist.members.get_member(sender) if member is not None: found_linked_membership.add(sender) else: user = user_manager.get_user(sender) if user is not None: for address in user.addresses: if mlist.members.get_member(address.email) is not None: found_linked_membership.add(sender) if (mlist.nonmembers.get_member(sender) is None and sender not in found_linked_membership): # The address is neither a member nor nonmember # and has no linked subscribed user. address = user_manager.get_address(sender) assert address is not None, ( 'Posting address is not registered: {}'.format(sender)) mlist.subscribe(address, MemberRole.nonmember) # If a membership is found, the MemberModeration rule takes precedence. for sender in msg.senders: if sender in found_linked_membership: return False # Do nonmember moderation check. for sender in msg.senders: nonmember = mlist.nonmembers.get_member(sender) assert nonmember is not None, ( 'Sender not added to the nonmembers: {}'.format(sender)) # Check the '*_these_nonmembers' properties first. XXX These are # legacy attributes from MM2.1; their database type is 'pickle' and # they should eventually get replaced. for action in ('accept', 'hold', 'reject', 'discard'): legacy_attribute_name = '{}_these_nonmembers'.format(action) checklist = getattr(mlist, legacy_attribute_name) for addr in checklist: if ((addr.startswith('^') and re.match(addr, sender)) or addr == sender): # noqa # The reason will get translated at the point of use. reason = 'The sender is in the nonmember {} list' _record_action(msgdata, action, sender, reason.format(action)) return True action = (mlist.default_nonmember_action if nonmember.moderation_action is None else nonmember.moderation_action) if action is Action.defer: # The regular moderation rules apply. return False elif action is not None: # We must stringify the moderation action so that it can be # stored in the pending request table. # # The reason will get translated at the point of use. reason = 'The message is not from a list member' _record_action(msgdata, action.name, sender, reason) return True # The sender must be a member, so this rule does not match. return False