<?php
   /*
    *  Message and Spam Filter Plugin 
    *  By Luke Ehresman <luke@squirrelmail.org>
    *     Tyler Akins
    *     Brent Bice
    *  (c) 2000 (GNU GPL - see ../../COPYING)
    *
    *  This plugin filters your inbox into different folders based upon given
    *  criteria.  It is most useful for people who are subscibed to mailing lists
    *  to help organize their messages.  The argument stands that filtering is
    *  not the place of the client, which is why this has been made a plugin for
    *  SquirrelMail.  You may be better off using products such as Sieve or
    *  Procmail to do your filtering so it happens even when SquirrelMail isn't
    *  running.
    *
    *  If you need help with this, or see improvements that can be made, please
    *  email me directly at the address above.  I definately welcome suggestions
    *  and comments.  This plugin, as is the case with all SquirrelMail plugins,
    *  is not directly supported by the developers.  Please come to me off the
    *  mailing list if you have trouble with it.
    *
    *  Also view plugins/README.plugins for more information.
    *
    */

   // Set this to true if you have problems -- check the README file
   // Note:  This doesn't work all of the time (No idea why)
   //        Seems to be related to UW
   global $UseSeparateImapConnection;
   $UseSeparateImapConnection = false;
   
   // Set this to false if you do not want the user to be able to enable
   // spam filters
   global $AllowSpamFilters;
   $AllowSpamFilters = true;
   
   // Set this to a string containing something unique to the line in the
   // header you want me to find IPs to scan the databases with.  For example,
   // All the email coming IN from the internet to my site has a line in
   // the header that looks like (all on one line):
   // Received: [from usw-sf-list1.sourceforge.net (usw-sf-fw2.sourceforge.net
   //    [216.136.171.252]) by firewall.persistence.com (SYSADMIN-antispam
   //     0.2) with
   // Since this line indicates the FIRST hop the email takes into my network,
   // I set my SpamFilters_YourHop to 'by firewall.persistence.com' but any
   // case-sensitive string will do.  You can set it to something found on
   // every line in the header (like ' ') if you want to scan all IPs in
   // the header (lots of false alarms here tho).

   global $SpamFilters_YourHop;
   $SpamFilters_YourHop = 'by firewall.persistence.com';

   // A cache of IPs we've already checked or are known bad boys or good boys
   // ie. $SpamFilters_DNScache["210.54.220.18"] = true; 
   // would tell filters to not even bother doing the DNS queries for that
   // IP and any email coming from it are SPAM - false would mean that any
   // email coming from it would NOT be SPAM
   global $SpamFilters_DNScache;

   require_once ("../plugins/filters/filters.php");

   function squirrelmail_plugin_init_filters() {
      global $squirrelmail_plugin_hooks;
      global $mailbox, $imap_stream, $imapConnection;

      $squirrelmail_plugin_hooks["left_main_before"]["filters"] = "start_filters";
      if ($mailbox == "INBOX")
         $squirrelmail_plugin_hooks["right_main_after_header"]["filters"] = "start_filters";
      $squirrelmail_plugin_hooks["options_register"]["filters"] = "squirrelmail_plugin_register";
   }

   function squirrelmail_plugin_register() {
      global $optionpages;

      $optionpages[] = array(
         'name' => 'Message Filters',
         'url'  => '../plugins/filters/options.php',
         'desc' => 'Filtering enables messages with different criteria to
                    be automatically filtered into different folders for
                    easier organization.',
         'js'   => false
      );
   }
?>