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"""News to mail gateway script. Copyright 2000 Cosimo Alfarano
Author: Cosimo Alfarano
Date: June 11 2000
news2mail.py - 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 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.
"""
import sys
import smtplib
import string
from re import compile
#import getopt
import time
#import rfc822
from socket import gethostbyaddr, gethostname
import tempfile
import pyginfo
class news2mail:
"""news to mail gateway class"""
TMPFILE = tempfile.mktemp()
wlfile = None
logfile = None
sender = ''
rcpt = ''
envelope = ''
smtpserver = 'localhost'
hostname = gethostbyaddr(gethostname())[0]
heads_dict, smtpheads, nntpheads = {}, {}, {}
article, headers, body = [], [], []
debug = 1
def readfile(self):
for line in sys.stdin.readlines():
self.article.append(line)
if (len(self.article) == 1 and self.article[0][0] == '/'):
file = self.article[0][:-1]
del self.article[0]
for line in open(file,'r').readlines():
self.article.append(line)
def parsearticle(self):
"""get news article from file or stdin and separate heads from body
REMEBER: headers value has '\n' as last char.
Use string[:-1] to ignore newline.
"""
try:
body = 0 # are we in body or in headers?
# voidline = compile('^$') # I need '\n', ^$ matches anything
# spaceending = compile('\s*\n$')
for line in self.article:
if not body and len(line) == 1:
body = 1 # starts article body section
if not body:
try:
head, value = string.split(line, ' ', 1)
self.nntpheads[head] = value
except (string.index_error), message:
print 'string error: %s' % message
print '(probably missing couple "Header: value" in %s)' % line
sys.exit(1)
elif len(line) > 0 and body:
self.body.append(line)
return self.nntpheads, self.body
# except (re.error, string.index_error), message:
except (string.index_error), message:
print message
sys.exit(1)
def puthead(self, dict, list, key):
"""private, x-form dict entries in list entries"""
if dict.has_key(key):
list.append(key + ' ' + dict.get(key))
else:
return 0
return 1
def sortheads(self):
"""make list sorting heads, Received: From: To: Subject: first, others, X-*, Resent-* last"""
set = ('Received:','From:','To:','Subject:','Date:') # put at top
for k in set:
self.puthead(self.heads_dict,self.headers,k)
for k in self.heads_dict.keys():
if k[:2] != 'X-' and k[:7] != 'Resent-' and k not in set:
self.puthead(self.heads_dict,self.headers,k)
for k in self.heads_dict.keys():
if k[:2] == 'X-':
self.puthead(self.heads_dict,self.headers,k)
for k in self.heads_dict.keys():
if k[:7] == 'Resent-':
self.puthead(self.heads_dict,self.headers,k)
return self.headers
def mergeheads(self):
"""make a unique headers dictionary from NNTP and SMTP
single headers dictionaries."""
self.heads_dict = {}
try:
for header in self.nntpheads.keys(): # fill it w/ nntp old heads
self.heads_dict[header] = self.nntpheads[header]
for header in self.smtpheads.keys(): # and replace them w/ smtp new heads
self.heads_dict[header] = self.smtpheads[header]
except KeyError, message:
print message
return self.heads_dict
def addheads(self):
"""add new header like X-Gateway: Received:
"""
info = pyginfo.pygsinfo()
try:
self.heads_dict['X-Gateway:'] = info.PROGNAME + ' ' + \
info.__doc__ + '\n'
##self.heads_dict['X-Gateway:'] = '%s %s\n' % (info.PROGNAME, info.__doc__)
# to make Received: header
t = time.ctime(time.time())
if time.daylight:
tzone = time.tzname[1]
else:
tzone = time.tzname[0]
# An exemple 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 ' + info.PROGNAME + \
'\n\tfor <' + self.rcpt + '> ; ' + \
t + ' (' + tzone +')\n'
self.heads_dict['Received:'] = tmp
except KeyError, message:
print message
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 self.heads_dict.has_key('Newsgroups:'):
self.heads_dict['X-Newsgroups:'] = self.heads_dict['Newsgroups:']
del self.heads_dict['Newsgroups:']
if self.heads_dict.has_key('NNTP-Posting-Host:'):
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 ....
if self.heads_dict.has_key('Approved:'):
del self.heads_dict['Approved:']
if self.heads_dict.has_key('From'): # neither 'From ' nor 'From:'
del self.heads_dict['From']
if self.heads_dict.has_key('Xref:'):
del self.heads_dict['Xref:']
if self.heads_dict.has_key('Path:'):
del self.heads_dict['Path:']
if self.heads_dict.has_key('Lines:'):
del self.heads_dict['Lines:']
# it is usually set by INN, if ng is moderated...
if self.heads_dict.has_key('Sender:'):
del self.heads_dict['Sender:']
if self.heads_dict.has_key('Message-id:'):
self.heads_dict['Message-Id:'] = self.heads_dict['Message-id']
del(self.heads_dict['Message-id'])
if self.heads_dict.has_key('Message-ID:'):
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 not self.heads_dict.has_key('Message-Id:'):
# It should put a real user@domain
msgid = '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:
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(string.join(self.headers,''))
msglist.append(string.join(self.body,''))
msg = string.join(msglist,'')
s.data(msg)
s.quit()
return 1
except (smtplib.SMTPException), messaggio:
print messaggio
sys.exit(1)
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