# Copyright (C) 1998-2007 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. """The class representing a Mailman mailing list. Mixes in many task-specific classes. """ from __future__ import with_statement import os import re import sys import time import errno import shutil import socket import urllib import cPickle import logging import marshal import email.Iterators from UserDict import UserDict from cStringIO import StringIO from string import Template from types import MethodType from urlparse import urlparse from zope.interface import implements from email.Header import Header from email.Utils import getaddresses, formataddr, parseaddr from Mailman import Errors from Mailman import Utils from Mailman import Version from Mailman import database from Mailman.UserDesc import UserDesc from Mailman.configuration import config from Mailman.interfaces import * # Base classes from Mailman.Archiver import Archiver from Mailman.Bouncer import Bouncer from Mailman.Digester import Digester from Mailman.SecurityManager import SecurityManager # GUI components package from Mailman import Gui # Other useful classes from Mailman import i18n from Mailman import MemberAdaptor from Mailman import Message _ = i18n._ DOT = '.' EMPTYSTRING = '' OR = '|' clog = logging.getLogger('mailman.config') elog = logging.getLogger('mailman.error') vlog = logging.getLogger('mailman.vette') slog = logging.getLogger('mailman.subscribe') # Use mixins here just to avoid having any one chunk be too large. class MailList(object, Archiver, Digester, SecurityManager, Bouncer): implements( IMailingList, IMailingListAddresses, IMailingListIdentity, IMailingListRosters, ) def __init__(self, data): self._data = data # Only one level of mixin inheritance allowed. for baseclass in self.__class__.__bases__: if hasattr(baseclass, '__init__'): baseclass.__init__(self) # Initialize the web u/i components. self._gui = [] for component in dir(Gui): if component.startswith('_'): continue self._gui.append(getattr(Gui, component)()) # Give the extension mechanism a chance to process this list. try: from Mailman.ext import init_mlist except ImportError: pass else: init_mlist(self) def __getattr__(self, name): missing = object() if name.startswith('_'): return getattr(super(MailList, self), name) # Delegate to the database model object if it has the attribute. obj = getattr(self._data, name, missing) if obj is not missing: return obj # Finally, delegate to one of the gui components. for guicomponent in self._gui: obj = getattr(guicomponent, name, missing) if obj is not missing: return obj # Nothing left to delegate to, so it's got to be an error. raise AttributeError(name) def __repr__(self): return '' % (self.fqdn_listname, id(self)) def GetConfirmJoinSubject(self, listname, cookie): if config.VERP_CONFIRMATIONS and cookie: cset = i18n.get_translation().charset() or \ Utils.GetCharSet(self.preferred_language) subj = Header( _('Your confirmation is required to join the %(listname)s mailing list'), cset, header_name='subject') return subj else: return 'confirm ' + cookie def GetConfirmLeaveSubject(self, listname, cookie): if config.VERP_CONFIRMATIONS and cookie: cset = i18n.get_translation().charset() or \ Utils.GetCharSet(self.preferred_language) subj = Header( _('Your confirmation is required to leave the %(listname)s mailing list'), cset, header_name='subject') return subj else: return 'confirm ' + cookie def GetMemberAdminEmail(self, member): """Usually the member addr, but modified for umbrella lists. Umbrella lists have other mailing lists as members, and so admin stuff like confirmation requests and passwords must not be sent to the member addresses - the sublists - but rather to the administrators of the sublists. This routine picks the right address, considering regular member address to be their own administrative addresses. """ if not self.umbrella_list: return member else: acct, host = tuple(member.split('@')) return "%s%s@%s" % (acct, self.umbrella_member_suffix, host) def GetScriptURL(self, target, absolute=False): if absolute: return self.web_page_url + target + '/' + self.fqdn_listname else: return Utils.ScriptURL(target) + '/' + self.fqdn_listname def GetOptionsURL(self, user, obscure=False, absolute=False): url = self.GetScriptURL('options', absolute) if obscure: user = Utils.ObscureEmail(user) return '%s/%s' % (url, urllib.quote(user.lower())) # # Web API support via administrative categories # def GetConfigCategories(self): class CategoryDict(UserDict): def __init__(self): UserDict.__init__(self) self.keysinorder = config.ADMIN_CATEGORIES[:] def keys(self): return self.keysinorder def items(self): items = [] for k in config.ADMIN_CATEGORIES: items.append((k, self.data[k])) return items def values(self): values = [] for k in config.ADMIN_CATEGORIES: values.append(self.data[k]) return values categories = CategoryDict() # Only one level of mixin inheritance allowed for gui in self._gui: k, v = gui.GetConfigCategory() categories[k] = (v, gui) return categories def GetConfigSubCategories(self, category): for gui in self._gui: if hasattr(gui, 'GetConfigSubCategories'): # Return the first one that knows about the given subcategory subcat = gui.GetConfigSubCategories(category) if subcat is not None: return subcat return None def GetConfigInfo(self, category, subcat=None): for gui in self._gui: if hasattr(gui, 'GetConfigInfo'): value = gui.GetConfigInfo(self, category, subcat) if value: return value # # Membership management front-ends and assertion checks # def InviteNewMember(self, userdesc, text=''): """Invite a new member to the list. This is done by creating a subscription pending for the user, and then crafting a message to the member informing them of the invitation. """ invitee = userdesc.address Utils.ValidateEmail(invitee) # check for banned address pattern = Utils.get_pattern(invitee, self.ban_list) if pattern: raise Errors.MembershipIsBanned(pattern) # Hack alert! Squirrel away a flag that only invitations have, so # that we can do something slightly different when an invitation # subscription is confirmed. In those cases, we don't need further # admin approval, even if the list is so configured. The flag is the # list name to prevent invitees from cross-subscribing. userdesc.invitation = self.internal_name() cookie = self.pend_new(Pending.SUBSCRIPTION, userdesc) requestaddr = self.getListAddress('request') confirmurl = '%s/%s' % (self.GetScriptURL('confirm', absolute=1), cookie) listname = self.real_name text += Utils.maketext( 'invite.txt', {'email' : invitee, 'listname' : listname, 'hostname' : self.host_name, 'confirmurl' : confirmurl, 'requestaddr': requestaddr, 'cookie' : cookie, 'listowner' : self.GetOwnerEmail(), }, mlist=self) sender = self.GetRequestEmail(cookie) msg = Message.UserNotification( invitee, sender, text=text, lang=self.preferred_language) subj = self.GetConfirmJoinSubject(listname, cookie) del msg['subject'] msg['Subject'] = subj msg.send(self) def AddMember(self, userdesc, remote=None): """Front end to member subscription. This method enforces subscription policy, validates values, sends notifications, and any other grunt work involved in subscribing a user. It eventually calls ApprovedAddMember() to do the actual work of subscribing the user. userdesc is an instance with the following public attributes: address -- the unvalidated email address of the member fullname -- the member's full name (i.e. John Smith) digest -- a flag indicating whether the user wants digests or not language -- the requested default language for the user password -- the user's password Other attributes may be defined later. Only address is required; the others all have defaults (fullname='', digests=0, language=list's preferred language, password=generated). remote is a string which describes where this add request came from. """ assert self.Locked() # Suck values out of userdesc, apply defaults, and reset the userdesc # attributes (for passing on to ApprovedAddMember()). Lowercase the # addr's domain part. email = Utils.LCDomain(userdesc.address) name = getattr(userdesc, 'fullname', '') lang = getattr(userdesc, 'language', self.preferred_language) digest = getattr(userdesc, 'digest', None) password = getattr(userdesc, 'password', Utils.MakeRandomPassword()) if digest is None: if self.nondigestable: digest = 0 else: digest = 1 # Validate the e-mail address to some degree. Utils.ValidateEmail(email) if self.isMember(email): raise Errors.MMAlreadyAMember, email if email.lower() == self.GetListEmail().lower(): # Trying to subscribe the list to itself! raise Errors.InvalidEmailAddress realname = self.real_name # Is the subscribing address banned from this list? pattern = Utils.get_pattern(email, self.ban_list) if pattern: vlog.error('%s banned subscription: %s (matched: %s)', realname, email, pattern) raise Errors.MembershipIsBanned, pattern # Sanity check the digest flag if digest and not self.digestable: raise Errors.MMCantDigestError elif not digest and not self.nondigestable: raise Errors.MMMustDigestError userdesc.address = email userdesc.fullname = name userdesc.digest = digest userdesc.language = lang userdesc.password = password # Apply the list's subscription policy. 0 means open subscriptions; 1 # means the user must confirm; 2 means the admin must approve; 3 means # the user must confirm and then the admin must approve if self.subscribe_policy == 0: self.ApprovedAddMember(userdesc, whence=remote or '') elif self.subscribe_policy == 1 or self.subscribe_policy == 3: # User confirmation required. BAW: this should probably just # accept a userdesc instance. cookie = self.pend_new(Pending.SUBSCRIPTION, userdesc) # Send the user the confirmation mailback if remote is None: by = remote = '' else: by = ' ' + remote remote = _(' from %(remote)s') recipient = self.GetMemberAdminEmail(email) confirmurl = '%s/%s' % (self.GetScriptURL('confirm', absolute=1), cookie) text = Utils.maketext( 'verify.txt', {'email' : email, 'listaddr' : self.GetListEmail(), 'listname' : realname, 'cookie' : cookie, 'requestaddr' : self.getListAddress('request'), 'remote' : remote, 'listadmin' : self.GetOwnerEmail(), 'confirmurl' : confirmurl, }, lang=lang, mlist=self) msg = Message.UserNotification( recipient, self.GetRequestEmail(cookie), text=text, lang=lang) # BAW: See ChangeMemberAddress() for why we do it this way... del msg['subject'] msg['Subject'] = self.GetConfirmJoinSubject(realname, cookie) msg['Reply-To'] = self.GetRequestEmail(cookie) msg.send(self) who = formataddr((name, email)) slog.info('%s: pending %s %s', self.internal_name(), who, by) raise Errors.MMSubscribeNeedsConfirmation elif self.HasAutoApprovedSender(email): # no approval necessary: self.ApprovedAddMember(userdesc) else: # Subscription approval is required. Add this entry to the admin # requests database. BAW: this should probably take a userdesc # just like above. self.HoldSubscription(email, name, password, digest, lang) raise Errors.MMNeedApproval, _( 'subscriptions to %(realname)s require moderator approval') def DeleteMember(self, name, whence=None, admin_notif=None, userack=True): realname, email = parseaddr(name) if self.unsubscribe_policy == 0: self.ApprovedDeleteMember(name, whence, admin_notif, userack) else: self.HoldUnsubscription(email) raise Errors.MMNeedApproval, _( 'unsubscriptions require moderator approval') def ChangeMemberAddress(self, oldaddr, newaddr, globally): # Changing a member address consists of verifying the new address, # making sure the new address isn't already a member, and optionally # going through the confirmation process. # # Most of these checks are copied from AddMember newaddr = Utils.LCDomain(newaddr) Utils.ValidateEmail(newaddr) # Raise an exception if this email address is already a member of the # list, but only if the new address is the same case-wise as the old # address and we're not doing a global change. if not globally and newaddr == oldaddr and self.isMember(newaddr): raise Errors.MMAlreadyAMember if newaddr == self.GetListEmail().lower(): raise Errors.InvalidEmailAddress realname = self.real_name # Don't allow changing to a banned address. MAS: maybe we should # unsubscribe the oldaddr too just for trying, but that's probably # too harsh. pattern = Utils.get_pattern(newaddr, self.ban_list) if pattern: vlog.error('%s banned address change: %s -> %s (matched: %s)', realname, oldaddr, newaddr, pattern) raise Errors.MembershipIsBanned, pattern # Pend the subscription change cookie = self.pend_new(Pending.CHANGE_OF_ADDRESS, oldaddr, newaddr, globally) confirmurl = '%s/%s' % (self.GetScriptURL('confirm', absolute=1), cookie) lang = self.getMemberLanguage(oldaddr) text = Utils.maketext( 'verify.txt', {'email' : newaddr, 'listaddr' : self.GetListEmail(), 'listname' : realname, 'cookie' : cookie, 'requestaddr': self.getListAddress('request'), 'remote' : '', 'listadmin' : self.GetOwnerEmail(), 'confirmurl' : confirmurl, }, lang=lang, mlist=self) # BAW: We don't pass the Subject: into the UserNotification # constructor because it will encode it in the charset of the language # being used. For non-us-ascii charsets, this means it will probably # quopri quote it, and thus replies will also be quopri encoded. But # CommandRunner doesn't yet grok such headers. So, just set the # Subject: in a separate step, although we have to delete the one # UserNotification adds. msg = Message.UserNotification( newaddr, self.GetRequestEmail(cookie), text=text, lang=lang) del msg['subject'] msg['Subject'] = self.GetConfirmJoinSubject(realname, cookie) msg['Reply-To'] = self.GetRequestEmail(cookie) msg.send(self) def ApprovedChangeMemberAddress(self, oldaddr, newaddr, globally): # Check here for banned address in case address was banned after # confirmation was mailed. MAS: If it's global change should we just # skip this list and proceed to the others? For now we'll throw the # exception. pattern = Utils.get_pattern(newaddr, self.ban_list) if pattern: raise Errors.MembershipIsBanned, pattern # It's possible they were a member of this list, but choose to change # their membership globally. In that case, we simply remove the old # address. if self.getMemberCPAddress(oldaddr) == newaddr: self.removeMember(oldaddr) else: self.changeMemberAddress(oldaddr, newaddr) self.log_and_notify_admin(oldaddr, newaddr) # If globally is true, then we also include every list for which # oldaddr is a member. if not globally: return for listname in config.list_manager.names: # Don't bother with ourselves if listname == self.internal_name(): continue mlist = MailList(listname, lock=0) if mlist.host_name <> self.host_name: continue if not mlist.isMember(oldaddr): continue # If new address is banned from this list, just skip it. if Utils.get_pattern(newaddr, mlist.ban_list): continue mlist.Lock() try: # Same logic as above, re newaddr is already a member if mlist.getMemberCPAddress(oldaddr) == newaddr: mlist.removeMember(oldaddr) else: mlist.changeMemberAddress(oldaddr, newaddr) mlist.log_and_notify_admin(oldaddr, newaddr) mlist.Save() finally: mlist.Unlock() def log_and_notify_admin(self, oldaddr, newaddr): """Log member address change and notify admin if requested.""" slog.info('%s: changed member address from %s to %s', self.internal_name(), oldaddr, newaddr) if self.admin_notify_mchanges: with i18n.using_language(self.preferred_language): realname = self.real_name subject = _('%(realname)s address change notification') name = self.getMemberName(newaddr) if name is None: name = '' if isinstance(name, unicode): name = name.encode(Utils.GetCharSet(self.preferred_language), 'replace') text = Utils.maketext( 'adminaddrchgack.txt', {'name' : name, 'oldaddr' : oldaddr, 'newaddr' : newaddr, 'listname': self.real_name, }, mlist=self) msg = Message.OwnerNotification(self, subject, text) msg.send(self) # # Confirmation processing # def ProcessConfirmation(self, cookie, context=None): rec = self.pend_confirm(cookie) if rec is None: raise Errors.MMBadConfirmation, 'No cookie record for %s' % cookie try: op = rec[0] data = rec[1:] except ValueError: raise Errors.MMBadConfirmation, 'op-less data %s' % (rec,) if op == Pending.SUBSCRIPTION: whence = 'via email confirmation' try: userdesc = data[0] # If confirmation comes from the web, context should be a # UserDesc instance which contains overrides of the original # subscription information. If it comes from email, then # context is a Message and isn't relevant, so ignore it. if isinstance(context, UserDesc): userdesc += context whence = 'via web confirmation' addr = userdesc.address fullname = userdesc.fullname password = userdesc.password digest = userdesc.digest lang = userdesc.language except ValueError: raise Errors.MMBadConfirmation, 'bad subscr data %s' % (data,) # Hack alert! Was this a confirmation of an invitation? invitation = getattr(userdesc, 'invitation', False) # We check for both 2 (approval required) and 3 (confirm + # approval) because the policy could have been changed in the # middle of the confirmation dance. if invitation: if invitation <> self.internal_name(): # Not cool. The invitee was trying to subscribe to a # different list than they were invited to. Alert both # list administrators. self.SendHostileSubscriptionNotice(invitation, addr) raise Errors.HostileSubscriptionError elif self.subscribe_policy in (2, 3) and \ not self.HasAutoApprovedSender(addr): self.HoldSubscription(addr, fullname, password, digest, lang) name = self.real_name raise Errors.MMNeedApproval, _( 'subscriptions to %(name)s require administrator approval') self.ApprovedAddMember(userdesc, whence=whence) return op, addr, password, digest, lang elif op == Pending.UNSUBSCRIPTION: addr = data[0] # Log file messages don't need to be i18n'd if isinstance(context, Message.Message): whence = 'email confirmation' else: whence = 'web confirmation' # Can raise NotAMemberError if they unsub'd via other means self.ApprovedDeleteMember(addr, whence=whence) return op, addr elif op == Pending.CHANGE_OF_ADDRESS: oldaddr, newaddr, globally = data self.ApprovedChangeMemberAddress(oldaddr, newaddr, globally) return op, oldaddr, newaddr elif op == Pending.HELD_MESSAGE: id = data[0] approved = None # Confirmation should be coming from email, where context should # be the confirming message. If the message does not have an # Approved: header, this is a discard. If it has an Approved: # header that does not match the list password, then we'll notify # the list administrator that they used the wrong password. # Otherwise it's an approval. if isinstance(context, Message.Message): # See if it's got an Approved: header, either in the headers, # or in the first text/plain section of the response. For # robustness, we'll accept Approve: as well. approved = context.get('Approved', context.get('Approve')) if not approved: try: subpart = list(email.Iterators.typed_subpart_iterator( context, 'text', 'plain'))[0] except IndexError: subpart = None if subpart: s = StringIO(subpart.get_payload()) while True: line = s.readline() if not line: break if not line.strip(): continue i = line.find(':') if i > 0: if (line[:i].lower() == 'approve' or line[:i].lower() == 'approved'): # then approved = line[i+1:].strip() break # Is there an approved header? if approved is not None: # Does it match the list password? Note that we purposefully # do not allow the site password here. if self.Authenticate([config.AuthListAdmin, config.AuthListModerator], approved) <> config.UnAuthorized: action = config.APPROVE else: # The password didn't match. Re-pend the message and # inform the list moderators about the problem. self.pend_repend(cookie, rec) raise Errors.MMBadPasswordError else: action = config.DISCARD try: self.HandleRequest(id, action) except KeyError: # Most likely because the message has already been disposed of # via the admindb page. elog.error('Could not process HELD_MESSAGE: %s', id) return (op,) elif op == Pending.RE_ENABLE: member = data[1] self.setDeliveryStatus(member, MemberAdaptor.ENABLED) return op, member else: assert 0, 'Bad op: %s' % op def ConfirmUnsubscription(self, addr, lang=None, remote=None): if lang is None: lang = self.getMemberLanguage(addr) cookie = self.pend_new(Pending.UNSUBSCRIPTION, addr) confirmurl = '%s/%s' % (self.GetScriptURL('confirm', absolute=1), cookie) realname = self.real_name if remote is not None: by = " " + remote remote = _(" from %(remote)s") else: by = "" remote = "" text = Utils.maketext( 'unsub.txt', {'email' : addr, 'listaddr' : self.GetListEmail(), 'listname' : realname, 'cookie' : cookie, 'requestaddr' : self.getListAddress('request'), 'remote' : remote, 'listadmin' : self.GetOwnerEmail(), 'confirmurl' : confirmurl, }, lang=lang, mlist=self) msg = Message.UserNotification( addr, self.GetRequestEmail(cookie), text=text, lang=lang) # BAW: See ChangeMemberAddress() for why we do it this way... del msg['subject'] msg['Subject'] = self.GetConfirmLeaveSubject(realname, cookie) msg['Reply-To'] = self.GetRequestEmail(cookie) msg.send(self) # # Miscellaneous stuff # def HasAutoApprovedSender(self, sender): """Returns True and logs if sender matches address or pattern in subscribe_auto_approval. Otherwise returns False. """ auto_approve = False if Utils.get_pattern(sender, self.subscribe_auto_approval): auto_approve = True vlog.info('%s: auto approved subscribe from %s', self.internal_name(), sender) return auto_approve # # Multilingual (i18n) support # def set_languages(self, *language_codes): # XXX FIXME not to use a database entity directly. from Mailman.database.model import Language # Don't use the language_codes property because that will add the # default server language. The effect would be that the default # server language would never get added to the list's list of # languages. requested_codes = set(language_codes) enabled_codes = set(config.languages.enabled_codes) self.available_languages = [ Language(code) for code in requested_codes & enabled_codes] def add_language(self, language_code): self.available_languages.append(Language(language_code)) @property def language_codes(self): # Callers of this method expect a list of language codes available_codes = set(self.available_languages) enabled_codes = set(config.languages.enabled_codes) codes = available_codes & enabled_codes # If we don't add this, and the site admin has never added any # language support to the list, then the general admin page may have a # blank field where the list owner is supposed to chose the list's # preferred language. if config.DEFAULT_SERVER_LANGUAGE not in codes: codes.add(config.DEFAULT_SERVER_LANGUAGE) return list(codes)