"""Mail to news gateway script. Copyright 2000 Cosimo Alfarano Author: Cosimo Alfarano Date: September 16 2000 mail2news.py - (C) 2000 by Cosimo Alfarano 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 email and sends it via SMTP. class mail2news is hopefully conform to rfc850. """ from collections import OrderedDict import email import logging import nntplib from os import getpid from re import findall from socket import gethostbyaddr, gethostname import sys #logging.basicConfig(level=logging.DEBUG) # This is the single source of Truth # Yes, it is awkward to have it assymetrically here # and not in news2mail as well. VERSION = '0.9.9' DESC = "The Python Gateway Script: news2mail mail2news gateway" class mail2news: """news to mail gateway class""" reader = None # mode reader # newsgroups = None # Newsgroups: local.test,local.moderated... # approved = None # Approved: kame@aragorn.lorien.org newsserver = 'localhost' # no comment :) port = 119 user = None password = None hostname = gethostbyaddr(gethostname())[0] heads_dict, smtpheads, nntpheads = {}, {}, {} email, headers, body = [], [], [] message = None def readfile(self, opt): self.message = email.message_from_file(sys.stdin) if (len(self.message) == 0) \ and self.message.get_payload().startswith('/'): msg_file_name = self.message.get_payload().strip() del self.message with open(msg_file_name, 'r') as msg_file: self.message = email.message_from_file(msg_file) # introduce nntpheads if opt.newsgroup != '': self.nntpheads['Newsgroups'] = opt.newsgroup if opt.approver != '': self.nntpheads['Approved'] = opt.approver return 1 @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 mergeheads(self): """make a unique headers dictionary from NNTP and SMTP single headers dictionaries.""" self.heads_dict = OrderedDict(self.message) self.heads_dict.update(self.nntpheads) return self.heads_dict def renameheads(self): """rename headers such as Resent-*: to X-Resent-*: headers renamed are useless or not rfc 977/850 copliant handles References/In-Reply-To headers """ try: for key in self.heads_dict.keys(): if(key[:7] in ['Resent-']): if ('X-' + key) in self.heads_dict: self.heads_dict['X-Original-' + key] = \ self.heads_dict['X-' + key] self.heads_dict['X-' + key] = self.heads_dict[key] del self.heads_dict[key] # In rfc822 References: is considered, but many MUA doen't put it. if ('References' not in self.heads_dict) and \ ('In-Reply-To' in self.heads_dict): print self.heads_dict['In-Reply-To'] # some MUA uses msgid without '<' '>' # ref = findall('([^\s<>\']+@[^\s<>;:\']+)', \ # but I prefer use RFC standards ref = findall('(<[^<>]+@[^<>]+>)', self.heads_dict['In-Reply-To']) # if found, keep first element that seems a Msg-ID. if(ref and len(ref)): self.heads_dict['References'] = '%s\n' % ref[0] except KeyError, message: print message return self.heads_dict def removeheads(self, heads=None): """remove headers like Xref: Path: Lines: """ try: # removing some others useless headers .... (From is not From:) rmheads = ['Received', 'From ', 'NNTP-Posting-Host', 'X-Trace', 'X-Compliants-To', 'NNTP-Posting-Date'] if(heads): rmheads.append(heads) for head in rmheads: if head in self.heads_dict: del self.heads_dict[head] if 'Message-Id' not in self.heads_dict: 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: msgid = '\n' % (getpid()) self.heads_dict['Message-Id'] = msgid except KeyError, message: print message return self.heads_dict def sortheads(self): """make list sorted by heads: From: To: Subject: first, others, X-*, X-Resent-* last""" # put at top head_set = ('Newsgroups', 'From', 'To', 'X-To', 'Cc', 'Subject', 'Date', 'Approved', 'References', 'Message-Id') logging.debug('self.heads_dict = %s', self.heads_dict) for k in head_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('X-Resent-') \ and k not in head_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('X-Resent-'): self.puthead(self.heads_dict, self.headers, k) logging.debug('self.headers = %s', self.headers) return self.headers def sendemail(self): """Talk to NNTP server and try to send email.""" try: n = nntplib.NNTP(self.newsserver, self.port, self.user, self.password) if(self.reader): n.putline('mode reader') resp = n.getline() print resp resp = n.shortcmd('POST') # sett RFC977 2.4.2 if resp[0] != '3': raise n.error_reply, str(resp) for line in self.headers: if not line: break if line[-1] == '\n': line = line[:-1] if line[:1] == '.': line = '.' + line n.putline(line) for line in self.body: if not line: break if line[-1] == '\n': line = line[:-1] if line[:1] == '.': line = '.' + line n.putline(line) n.putline('.') n.quit() return None except (nntplib.error_reply, nntplib.error_temp, nntplib.error_perm, nntplib.error_proto, nntplib.error_data), message: return 'NNTP: ' + str(message)