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# 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.
'''Mixin class for gatewaying mail to news, and news to mail.'''
ImproperNNTPConfigError = "ImproperNNTPConfigError"
class GatewayManager:
def InitVars(self):
# Configurable
self.nntp_host = ''
self.linked_newsgroup = ''
self.gateway_to_news = 0
self.gateway_to_mail = 0
def GetConfigInfo(self):
import mm_cfg
return [
'Mail to news and news to mail gateway services.',
('nntp_host', mm_cfg.String, 50, 0,
'The internet address of the machine your news server is running on.',
'The news server is not part of Mailman proper. You have to already'
' have access to a nntp server, and that nntp server has to recognize'
' the machine this mailing list runs on as a machine capable of'
' reading and posting news.'),
('linked_newsgroup', mm_cfg.String, 50, 0,
'The name of the usenet group to gateway to and/or from.'),
('gateway_to_news', mm_cfg.Toggle, ('No', 'Yes'), 0,
'Should posts to the mailing list be resent to the newsgroup?'),
('gateway_to_mail', mm_cfg.Toggle, ('No', 'Yes'), 0,
'Should newsgroup posts not sent from the list be resent to the'
' list?')
]
# Watermarks are kept externally to avoid locking problems.
def PollNewsGroup(self, watermark):
if (not self.gateway_to_mail or not self.nntp_host or
not self.linked_newsgroup):
return 0
import nntplib, os, string, mm_cfg
con = nntplib.NNTP(self.nntp_host)
r,c,f,l,n = con.group(self.linked_newsgroup)
# NEWNEWS is not portable and has synchronization issues...
# Use a watermark system instead.
if watermark == 0:
return eval(l)
for num in range(watermark, eval(l)+1):
try:
headers = con.head(`num`)[3]
for header in headers:
i = string.index(header, ':')
if header[:i] <> 'X-Remailer':
continue
if header[i:] == ': %s@%s' % (self._internal_name,
self.host_name):
raise "QuickEscape"
body = con.body(`num`)[3]
file = os.popen("%s %s nonews" % (os.path.join(mm_cfg.SCRIPTS_DIR,
"post"), self._internal_name), "w")
file.write(string.join(headers,'\n'))
file.write('\n\n')
file.write(string.join(body,'\n'))
file.write('\n')
file.close()
except nntplib.error_temp:
pass # Probably canceled, etc...
except "QuickEscape":
pass # We gated this TO news, don't repost it!
return l
def SendMailToNewsGroup(self, msg):
import os
if self.gateway_to_news == 0:
return
if self.linked_newsgroup == '' or self.nntp_host == '':
raise ImproperNNTPConfigError
try:
if self.tmp_prevent_gate:
return
except AttributeError:
pass # Wasn't remailed by the news gater then. Let it through.
# Fork in case the nntp connection hangs.
if not os.fork():
import nntplib,string
msg.headers.append("Newsgroups: %s\n" % self.linked_newsgroup)
msg.headers.append("X-Remailer: %s@%s\n" %
(self._internal_name,self.host_name))
# Note: Need to be sure 2 messages aren't ever sent to the same
# list in the same process, since message ID's need to be unique.
# could make the ID be mm.listname.postnum instead if that happens
if msg.getheader('Message-ID') == None:
import time
msg.headers.append("Message-ID: <mm.%s.%s@%s>\n" %
(time.time(), os.getpid(), self.host_name))
if msg.getheader('Lines') == None:
msg.headers.append("Lines: %s\n" %
len(string.split(msg.body,"\n")))
# NNTP is strict about spaces after the colon in headers.
for n in len(msg.headers):
line = msg.headers[n]
i = string.index(line,":")
if line[i+1] <> ' ':
msg.headers[n] = line[:i+1] + ' ' + line[i+1:]
con = nntplib.NNTP(self.nntp_host)
con.quit()
os._exit(0)
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