"""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. """ import sys from os import getpid from socket import gethostbyaddr, gethostname from re import findall import nntplib import pyginfo 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 = [], [], [] def readfile(self, opt): for line in sys.stdin.readlines(): self.email.append(line) if(len(self.email) == 1 and self.email[0][0] == '/'): file = self.email[0][:-1] del self.email[0] for line in open(file, 'r').readlines(): self.email.append(line) # introduce nntpheads if opt.newsgroup != '': # TODO put it directly to self.message when we have it self.nntpheads['Newsgroups:'] = opt.newsgroup + '\n' if opt.approver != '': self.nntpheads['Approved:'] = opt.approver + '\n' return 1 def parseemail(self): """get news email 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? for line in self.email: if not body and len(line) == 1: body = 1 # starts email body section if not body: try: # if it is a multi-line header like Received: if line[0] not in [' ', '\t']: try: head, value = line.split(' ', 1) except ValueError: value = '' self.smtpheads[head] = value else: self.smtpheads[head] = '%s%s' % \ (self.smtpheads[head], line) except (ValueError), message: print('line: %s' % line) print('(probably missing couple "Header: value" in %s)' % line) sys.exit(1) elif len(line) > 0 and body: self.body.append(line) except (ValueError), message: print message sys.exit(1) return self.smtpheads, self.body def puthead(self, dict, list, key): """private, transform dict entries in list entries Appends key of dict to list, deleting it from dict. """ if key in dict: list.append(key + ' ' + dict.get(key)) del dict[key] else: return 0 return 1 def sortheads(self): """make list sorted by heads: From: To: Subject: first, others, X-*, X-Resent-* last""" # put at top set = ('Newsgroups:', 'From:', 'To:', 'X-To:', 'Cc:', 'Subject:', 'Date:', 'Approved:', 'References:', 'Message-Id:') 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[:9] != 'X-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[:9] == 'X-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.smtpheads.keys(): # fill it w/ smtp old heads self.heads_dict[header] = self.smtpheads[header] # and replace them w/ nntp new heads for header in self.nntpheads.keys(): self.heads_dict[header] = self.nntpheads[header] except KeyError, message: print message return self.heads_dict def addheads(self): """add new header like X-Gateway: """ info = pyginfo.pygsinfo() try: self.heads_dict['X-Gateway:'] = info.PROGNAME + ' ' + \ info.PROGDESC + ' - Mail to News\n' # it is nntpheads stuff # if(self.newsgroups): # self.heads_dict['Newsgroups:'] = self.newsgroups # if(self.approved): # self.heads_dict['Approved:'] = self.approved except KeyError, message: print message 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: ### test # if(post): # if(post in self.heads_dict): # self.heads_dict['X-Original-' + post] = self.heads_dict[post] # # self.heads_dict[post] = self.heads_dict[pre] # del(self.heads_dict[pre]) # # else: # if(pre[0:2] == 'X-' and pre in self.heads_dict): # self.heads_dict['X-Original-' + pre] = self.heads_dict[pre] # elif(not pre[0:2] == 'X-' and 'X-' + pre in self.heads_dict): # self.heads_dict['X-' + pre] = self.heads_dict[pre] # del(self.heads_dict[pre]) ### end test 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] # if('To:' in self.heads_dict): # self.heads_dict['X-To:'] = self.heads_dict['To:'] # del self.heads_dict['To:'] 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 'From' in self.heads_dict: # neither 'From ' nor 'From:' # del self.heads_dict['From'] # # neither 'From ' nor 'From:' # if 'NNTP-Posting-Host:' in self.heads_dict: # del self.heads_dict[''] # if 'Lines:' in self.heads_dict: # del self.heads_dict['Lines:'] # it is usually set by INN, if ng is moderated... # if 'Sender:' in self.heads_dict: # del self.heads_dict['Sender:'] 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 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)