#! /usr/bin/env python
#
# Copyright (C) 1998 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.

"""Accept posts to a list and handle them properly.

This script is invoked via the mail wrapper.

Stdin is the mail message, and argv[1] is the name of the target mailing
list.  If there's an argv[2], then this post was gated from news, and
thus should not be re-posted to news if the list gates to a newsgroup.
"""


# Todo: check size of To: list < 100
# Send back why the post was rejected.

import sys
import paths
from Mailman import MailList
from Mailman import Message
from Mailman import Errors

from Mailman.Logging.Utils import LogStdErr
LogStdErr("error", "post")

# Only let one program run at once per list.

# TODO: This can fail, and should send back an error message when it does.
current_list = MailList.MailList(sys.argv[1])
if len(sys.argv) > 2:
    current_list.tmp_prevent_gate = 1
else:
    current_list.tmp_prevent_gate = 0
try:
    prog = current_list.filter_prog
    if prog:
	import os, __main__
	file = os.path.join(paths.prefix, 'filters', prog)
	try:
	    execfile(file)
	    text = __main__.mailman_text
	except:
	    text = sys.stdin.read()
    else:
	text = sys.stdin.read()
    msg = Message.IncomingMessage(text)

    try:
	current_list.Post(msg)
    except Errors.MMNeedApproval, err_msg:
	if (current_list.dont_respond_to_post_requests
            or err_msg == Errors.MODERATED_LIST_MSG
            or err_msg == Errors.IMPLICIT_DEST_MSG
            or err_msg == Errors.SUSPICIOUS_HEADER_MSG
            or err_msg == Errors.FORBIDDEN_SENDER_MSG):
            # Do not send hold-for-approval notices for moderated messages
	    # or potential spam.
            current_list.Unlock()
	    sys.exit(0)
            
	the_sender = msg.GetSender()
	subj = msg.getheader('subject')
	if not subj:
	    subj = '[no subject]'
	body = """
Your mail to '%s' with the subject:

%s

Is being held until the list moderator can review it for approval.

The reason it is being held:

        %s

Either the message will get posted to the list, or you will receive 
notification of the moderator's decison.
""" % (current_list.real_name, subj, err_msg)
	
	current_list.SendTextToUser( subject = 'Mail sent to %s' % 
	                                         current_list.real_name,
				     recipient = the_sender,
	     			     text = body,
                                     raw = 1)
# Let another process run.
finally:
    current_list.Unlock()