#!/usr/bin/python2.2

import sys
import os
import re
import string
import email
from email import Encoders

filters = {'application/msword': 'wordfilter', 
           'application/octet-stream': 'wordfilter',
           'application/pdf': 'pdffilter',
           'text/html' : 'htmlfilter' }

#---------------------------------------------------------------------   
def handle_mail(msg):
   
   msg.add_header('X-Filter','mailfilter v3 (c) ronsc@ronsc.de http://www.ronsc.de')
   
   for part in msg.walk():

      payload=part.get_payload(None,1)
      type=part.get_type('text/plain');
     
      if (filters.has_key(type)):

         filename=part.get_param("name")
         if (filename==None):
            filename=""

         part.__delitem__("content-transfer-encoding")
         part.__delitem__("content-id")
         part.__delitem__("content-description")
         part.__delitem__("content-disposition")
         part.__delitem__("content-type")
         part.add_header('Content-Type','text/plain',charset='iso-8859-1');
         
         writer,reader=os.popen2("/etc/mailfilter/archive \""+filename+"\"")
         writer.write(payload); writer.close()
         archivefile=reader.read(); reader.close()

         new_payload="--- mailfilter::archiver -- (c) Ronald Schmidt ronsc@ronsc.de ---\n"+\
                     "\nUnter folgender Addresse koennen Sie sich den Anhang herunterladen:\n\n"+\
                     "         "+archivefile+"\n Type: "+type 

         writer,reader=os.popen2("/etc/mailfilter/"+filters[type]+" \""+filename+"\"")
         writer.write(payload); writer.close()
         str=reader.read(); reader.close()
         new_payload=new_payload+"\n\n"+str
         
         part.set_payload(new_payload);

   print msg

#---------------------------------------------------------------------   
# main


# email einlesen
msg = email.message_from_string(sys.stdin.read())

# mail bearbeiten
handle_mail(msg)

# vim:expandtab:ts=3