#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""News to mail gateway script. Copyright 2000 Cosimo Alfarano
Author: Cosimo Alfarano
Date: June 11 2000
pygs - Copyright 2000 by Cosimo Alfarano <Alfarano@Students.CS.UniBo.It>
You can use this software under the terms of the GPL. If we meet some day,
and you think this stuff is worth it, you can buy me a beer in return.
Thanks to md for this useful formula. Beer is beer.
Gets news article from stdin and sends it via SMTP.
"""
from __future__ import print_function
import sys
import os
import argparse
sys.path.append('/usr/lib/pyg')
import pyginfo
import whitelist
import news2mail
def parse_cmdline():
"""
set a dictionary with smtp new header in gw parameter (gw.smtpheads)
return (test,verbose) boolean tuple
"""
i = pyginfo.pygsinfo()
parser = argparse.ArgumentParser(
description='%s version %s - Copyright 2000 Cosimo Alfarano\n%s' %
(i.PROGNAME, i.VERSION, i.__doc__))
parser.add_argument('-H', '--smtpserver', default='')
parser.add_argument('-s', '--sender', required=True, default='')
parser.add_argument('-e', '--envelope', default='')
parser.add_argument('-t', '--to', dest='rcpt', required=True)
parser.add_argument('-w', '--wlfile')
parser.add_argument('-l', '--logfile')
# TODO eventually we should refactor these to be Boolean
# and use store_true
parser.add_argument('-T', '--test',
help='test mode (not send article via SMTP)',
action='store_true')
parser.add_argument('-d', '--debug',
action='store_true')
parser.add_argument('-V', '--verbose', help='verbose output',
action='store_true')
opts = parser.parse_args()
# By rfc822 [Resent-]Sender: should be ever set, unless == From:
# (not this case). Should be a human, while [Resent-]From: may be a program.
if opts.rcpt == '' or opts.sender == '':
raise argparse.ArgumentError('missing command line option')
if opts.envelope == '' and opts.sender != '':
opts.envelope = opts.sender
return opts
"""main is structured in 4 phases:
1) check and set pyg's internal variables
2) check whitelist for users' permission
3) format rfc 822 headers from input article
4) open smtp connection and send e-mail
"""
try:
"""phase 1:
check and set pyg's internal variables
"""
n2m = news2mail.news2mail()
owner = None
# it returns only test, other parms are set directly in the actual
# parameter
args = parse_cmdline()
# check if n2m has some file prefercences set on commandline
if n2m.wlfile is None:
wl = os.environ['HOME'] + '/pyg.whitelist'
else:
wl = n2m.wlfile
if n2m.logfile is None:
log = os.environ['HOME'] + '/pyg.log'
else:
log = n2m.logfile
# print 'using %s %s\n' % (wl,log)
wl = whitelist.whitelist(wl, log)
# reads stdin and parses article separating head from body
n2m.readfile()
n2m.parsearticle()
"""phase 2:
check whitelist for user's permission
"""
# make a first check of From: address
owner = wl.checkfrom(n2m.nntpheads['From:'])
if owner is None:
if sys.stdin.isatty() == 1 or args.test:
print ('"%s" is not in whitelist!' % (n2m.nntpheads['From:'][:-1]))
else:
wl.logmsg(n2m.nntpheads, wl.DENY)
# if verbose, I want to print out headers, so I can't
# exit now.
if not args.verbose:
sys.exit(1)
"""phase 3:
format rfc 822 headers from input article
"""
n2m.mergeheads() # make unique dict from NNTP and SMTP dicts
n2m.addheads() # add some important heads
n2m.renameheads() # rename useless heads
n2m.removeheads() # remove other heads
n2m.sortheads() # sort remaining heads :)
# prints formatted email message only (without send) if user wants
if args.verbose:
for line in n2m.headers:
print(line[:-1])
if args.owner is None:
sys.exit(1)
"""phase 4:
open smtp connection and send e-mail
"""
if len(n2m.headers) > 0:
wl.logmsg(n2m.heads_dict, wl.ACCEPT, owner)
if not args.test:
n2m.sendarticle()
else:
print('Error: No Headers!!!')
except KeyboardInterrupt:
print('Keyboard Interrupt')
sys.exit(1)
