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"""News to mail gateway script. Copyright 2000 Cosimo Alfarano
Author: Cosimo Alfarano
Date: June 11 2000
news2mail.py - (C) 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 and sends it via SMTP.
class news2mail is hopefully conform to rfc822.
normal (what pygs does) operations flow is:
1) reads from stdin NNTP article (readfile)
2) divide headers and body (parsearticle)
3) merges NNTP and SMTP heads into a unique heads
4) adds, renames and removes some heads
5) sorts remaining headers starting at top with Received: From: To: Subject:
Date:, normal headers ending with X-* and Resent-* headers.
"""
from collections import OrderedDict
import email
import logging
import smtplib
from socket import gethostbyaddr, gethostname
import sys
import time
from mail2news import VERSION, DESC
# logging.basicConfig(level=logging.DEBUG)
class news2mail(object):
"""news to mail gateway class"""
wlfile = None
logfile = None
sender = ''
rcpt = ''
envelope = ''
smtpserver = 'localhost'
hostname = gethostbyaddr(gethostname())[0]
heads_dict, smtpheads, nntpheads = {}, {}, {}
article, headers, body = [], [], []
message = None
debug = 1
def readfile(self):
self.message = email.message_from_file(sys.stdin)
self.nntpheads = OrderedDict(self.message)
@staticmethod
def puthead(from_dict, out_list, key):
"""private, x-form dict entries in out_list entries"""
if key in from_dict:
out_list.append(key + ' ' + from_dict.get(key))
else:
return 0
return 1
def sortheads(self):
"""make list sorting heads, Received: From: To: Subject: first,
others, X-*, Resent-* last"""
# put at top
header_set = ('Received', 'From', 'To', 'Subject', 'Date')
for k in header_set:
self.puthead(self.heads_dict, self.headers, k)
for k in self.heads_dict.keys():
if not k.startswith('X-') and not k.startswith('Resent-') \
and k not in header_set:
self.puthead(self.heads_dict, self.headers, k)
for k in self.heads_dict.keys():
if k.startswith('X-'):
self.puthead(self.heads_dict, self.headers, k)
for k in self.heads_dict.keys():
if k.startswith('Resent-'):
self.puthead(self.heads_dict, self.headers, k)
logging.debug('self.headers = %s', self.headers)
return self.headers
def mergeheads(self):
"""make a unique headers dictionary from NNTP and SMTP
single headers dictionaries."""
self.heads_dict = OrderedDict(self.nntpheads)
self.heads_dict.update(self.smtpheads)
return self.heads_dict
def addheads(self):
"""add new header like X-Gateway: Received:
"""
self.heads_dict['X-Gateway'] = 'pyg {0} {1}'.format(VERSION, DESC)
# to make Received: header
t = time.ctime(time.time())
if time.daylight:
tzone = time.tzname[1]
else:
tzone = time.tzname[0]
# An example from debian-italian:
# Received: from murphy.debian.org (murphy.debian.org [216.234.231.6])
# by smv04.iname.net (8.9.3/8.9.1SMV2) with SMTP id JAA26407
# for <kame.primo@innocent.com> sent by
# <debian-italian-request@lists.debian.org
tmp = 'from GATEWAY by ' + self.hostname + \
' with pyg' + \
'\n\tfor <' + self.rcpt + '> ; ' + \
t + ' (' + tzone + ')\n'
self.heads_dict['Received'] = tmp
return self.heads_dict
def renameheads(self):
"""rename headers such as Newsgroups: to X-Newsgroups:
headers renamed are useless or not rfc 822 copliant
"""
try:
if 'Newsgroups' in self.heads_dict:
self.heads_dict['X-Newsgroups'] = \
self.heads_dict['Newsgroups']
del self.heads_dict['Newsgroups']
if 'NNTP-Posting-Host' in self.heads_dict:
self.heads_dict['X-NNTP-Posting-Host'] = \
self.heads_dict['NNTP-Posting-Host']
del self.heads_dict['NNTP-Posting-Host']
except KeyError, message:
print message
return self.heads_dict
def removeheads(self):
"""remove headers like Xref: Path: Lines:
"""
try:
# removing some others useless headers ....
# that includes BOTH 'From ' and 'From'
# 'Sender is usually set by INN, if ng is moderated...
for key in ('Approved', 'From', 'Xref', 'Path', 'Lines', 'Sender'):
if key in self.heads_dict:
del self.heads_dict[key]
if 'Message-id' in self.heads_dict:
self.heads_dict['Message-Id'] = self.heads_dict['Message-id']
del self.heads_dict['Message-id']
if 'Message-ID' in self.heads_dict:
self.heads_dict['Message-Id'] = self.heads_dict['Message-ID']
del self.heads_dict['Message-ID']
# If message-id is not present, I generate it
if 'Message-Id' not in self.heads_dict:
# It should put a real user@domain
self.heads_dict['Message-Id'] = 'pyg@puppapera.org'
except KeyError, message:
print message
return self.heads_dict
def sendarticle(self):
"""Talk to SMTP server and try to send email."""
try:
raise NotImplementedError(
'sendarticle does not use email.Message yet')
msglist = []
s = smtplib.SMTP(self.smtpserver)
# put real locahost domain name.
s.helo(self.hostname)
if s.helo_resp is None and s.ehlo_resp is None:
print 'No helo resp'
sys.exit(1)
resp = s.mail(self.envelope)
if resp[0] != 250:
print 'SMTP error during MAIL cmd: %s %s' % (resp[0], resp[1])
print 'envelope %s gave problem?' % self.envelope
sys.exit(1)
resp = s.rcpt(self.rcpt)
if resp[0] != 250:
print 'SMTP error during MAIL cmd: %s %s' % (resp[0], resp[1])
sys.exit(1)
msglist.append(''.join(self.headers))
msglist.append(''.join(self.body))
msg = ''.join(msglist)
s.data(msg)
s.quit()
return 1
except (smtplib.SMTPException), messaggio:
print messaggio
sys.exit(1)
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