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# Copyright (C) 1998,1999,2000,2001 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
"""Standard Mailman message object.
This is a subclass of mimeo.Message but provides a slightly extended interface
which is more convenient for use inside Mailman.
"""
import email.Message
import email.Utils
from types import ListType
from Mailman import mm_cfg
from Mailman import Utils
COMMASPACE = ', '
class Message(email.Message.Message):
def get_sender(self, use_envelope=None, preserve_case=0):
"""Return the address considered to be the author of the email.
This can return either the From: header, the Sender: header or the
envelope header (a.k.a. the unixfrom header). The first non-empty
header value found is returned. However the search order is
determined by the following:
- If mm_cfg.USE_ENVELOPE_SENDER is true, then the search order is
Sender:, From:, unixfrom
- Otherwise, the search order is From:, Sender:, unixfrom
The optional argument use_envelope, if given overrides the
mm_cfg.USE_ENVELOPE_SENDER setting. It should be set to either 0 or 1
(don't use None since that indicates no-override).
unixfrom should never be empty. The return address is always
lowercased, unless preserve_case is true.
"""
senderfirst = mm_cfg.USE_ENVELOPE_SENDER
if use_envelope is not None:
senderfirst = use_envelope
if senderfirst:
headers = ('sender', 'from')
else:
headers = ('from', 'sender')
for h in headers:
# Use only the first occurrance of Sender: or From:, although it's
# not likely there will be more than one.
fieldval = self[h]
if not fieldval:
continue
addrs = email.Utils.getaddresses([fieldval])
try:
realname, address = addrs[0]
except IndexError:
continue
if address:
break
else:
# We didn't find a non-empty header, so let's fall back to the
# unixfrom address. This should never be empty, but if it ever
# is, it's probably a Really Bad Thing. Further, we just assume
# that if the unixfrom exists, the second field is the address.
unixfrom = self.get_unixfrom()
if unixfrom:
address = unixfrom.split()[1]
else:
# TBD: now what?!
address = ''
if not preserve_case:
return address.lower()
return address
class UserNotification(Message):
"""Class for internally crafted messages."""
def __init__(self, recip, sender, subject=None, text=None):
Message.__init__(self)
if text is not None:
self.set_payload(text)
if subject is None:
subject = '(no subject)'
self['Subject'] = subject
self['From'] = sender
if isinstance(recip, ListType):
self['To'] = COMMASPACE.join(recip)
self.recips = recip
else:
self['To'] = recip
self.recips = [recip]
def send(self, mlist, **_kws):
"""Sends the message by enqueuing it to the `virgin' queue.
This is used for all internally crafted messages.
"""
# Since we're crafting the message from whole cloth, let's make sure
# this message has a Message-ID. Yes, the MTA would give us one, but
# this is useful for logging to logs/smtp.
if not self.has_key('message-id'):
self['Message-ID'] = Utils.unique_message_id(mlist)
# Not imported at module scope to avoid import loop
from Mailman.Queue.sbcache import get_switchboard
virginq = get_switchboard(mm_cfg.VIRGINQUEUE_DIR)
# The message metadata better have a `recip' attribute
virginq.enqueue(self,
listname = mlist.internal_name(),
recips = self.recips,
**_kws)
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