plugins/filters/filters.php

   1 <?php
   2
   3 /**
   4  * Message and Spam Filter Plugin
   5  *
   6  * Copyright (c) 1999-2002 The SquirrelMail Project Team
   7  * Licensed under the GNU GPL. For full terms see the file COPYING.
   8  *
   9  * This plugin filters your inbox into different folders based upon given
  10  * criteria.  It is most useful for people who are subscibed to mailing lists
  11  * to help organize their messages.  The argument stands that filtering is
  12  * not the place of the client, which is why this has been made a plugin for
  13  * SquirrelMail.  You may be better off using products such as Sieve or
  14  * Procmail to do your filtering so it happens even when SquirrelMail isn't
  15  * running.
  16  *
  17  * If you need help with this, or see improvements that can be made, please
  18  * email me directly at the address above.  I definately welcome suggestions
  19  * and comments.  This plugin, as is the case with all SquirrelMail plugins,
  20  * is not directly supported by the developers.  Please come to me off the
  21  * mailing list if you have trouble with it.
  22  *
  23  * Also view plugins/README.plugins for more information.
  24  *
  25  * $Id$
  26  */
  27
  28
  29 function filters_SaveCache () {
  30     global $data_dir, $SpamFilters_DNScache;
  31
  32     if (file_exists($data_dir . "/dnscache")) {
  33         $fp = fopen($data_dir . "/dnscache", "r");
  34     } else {
  35         $fp = false;
  36     }
  37     if ($fp) {
  38         flock($fp,LOCK_EX);
  39     } else {
  40        $fp = fopen($data_dir . "/dnscache", "w+");
  41        fclose($fp);
  42        $fp = fopen($data_dir . "/dnscache", "r");
  43        flock($fp,LOCK_EX);
  44     }
  45     $fp1=fopen($data_dir . "/dnscache", "w+");
  46
  47     foreach ($SpamFilters_DNScache as $Key=> $Value) {
  48        $tstr = $Key . ',' . $Value['L'] . ',' . $Value['T'] . "\n";
  49        fputs ($fp1, $tstr);
  50     }
  51     fclose($fp1);
  52     flock($fp,LOCK_UN);
  53     fclose($fp);
  54 }
  55
  56
  57 function filters_LoadCache () {
  58     global $data_dir, $SpamFilters_DNScache;
  59
  60     if (file_exists($data_dir . "/dnscache")) {
  61         $SpamFilters_DNScache = array();
  62         if ($fp = fopen ($data_dir . "/dnscache", "r")) {
  63             flock($fp,LOCK_SH);
  64             while ($data=fgetcsv($fp,1024)) {
  65                if ($data[2] > time()) {
  66                   $SpamFilters_DNScache[$data[0]]['L'] = $data[1];
  67                   $SpamFilters_DNScache[$data[0]]['T'] = $data[2];
  68                }
  69             }
  70
  71             flock($fp,LOCK_UN);
  72         }
  73     }
  74 }
  75
  76 function filters_bulkquery($filters_spam_scan, $filters, $read) {
  77     global $SpamFilters_YourHop, $attachment_dir, $username,
  78            $SpamFilters_DNScache, $SpamFilters_BulkQuery,
  79            $SpamFilters_CacheTTL;
  80
  81     $IPs = array();
  82     $i = 0;
  83     while ($i < count($read)) {
  84         // EIMS will give funky results
  85         $Chunks = explode(' ', $read[$i]);
  86         if ($Chunks[0] != '*') {
  87             $i ++;
  88             continue;
  89         }
  90         $MsgNum = $Chunks[1];
  91
  92         $i ++;
  93
  94         // Look through all of the Received headers for IP addresses
  95         // Stop when I get ")" on a line
  96         // Stop if I get "*" on a line (don't advance)
  97         // and above all, stop if $i is bigger than the total # of lines
  98         while (($i < count($read)) &&
  99                 ($read[$i][0] != ')' && $read[$i][0] != '*' &&
 100                 $read[$i][0] != "\n")) {
 101             // Check to see if this line is the right "Received from" line
 102             // to check
 103             if (is_int(strpos($read[$i], $SpamFilters_YourHop))) {
 104                 $read[$i] = ereg_replace('[^0-9\.]', ' ', $read[$i]);
 105                 $elements = explode(' ', $read[$i]);
 106                 foreach ($elements as $value) {
 107                     if ($value != '' &&
 108                         ereg('[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}',
 109                             $value, $regs)) {
 110                         $Chunks = explode('.', $value);
 111                         $IP = $Chunks[3] . '.' . $Chunks[2] . '.' .
 112                               $Chunks[1] . '.' . $Chunks[0];
 113                         foreach ($filters as $key => $value) {
 114                             if ($filters[$key]['enabled'] &&
 115                                       $filters[$key]['dns']) {
 116                                 if (strlen($SpamFilters_DNScache[$IP.'.'.$filters[$key]['dns']]) == 0) {
 117                                    $IPs[$IP] = true;
 118                                    break;
 119                                 }
 120                             }
 121                         }
 122                         // If we've checked one IP and YourHop is
 123                         // just a space
 124                         if ($SpamFilters_YourHop == ' ') {
 125                             break;  // don't check any more
 126                         }
 127                     }
 128                 }
 129             }
 130             $i ++;
 131         }
 132     }
 133
 134     if (count($IPs) > 0) {
 135         $rbls = array();
 136         foreach ($filters as $key => $value) {
 137             if ($filters[$key]['enabled']) {
 138                 if ($filters[$key]['dns']) {
 139                     $rbls[$filters[$key]['dns']] = true;
 140                 }
 141             }
 142         }
 143
 144         $bqfil = $attachment_dir . $username . "-bq.in";
 145         $fp = fopen($bqfil, "w");
 146         fputs ($fp, $SpamFilters_CacheTTL . "\n");
 147         foreach ($rbls as $key => $value) {
 148             fputs ($fp, "." . $key . "\n");
 149         }
 150         fputs ($fp, "----------\n");
 151         foreach ($IPs as $key => $value) {
 152             fputs ($fp, $key . "\n");
 153         }
 154         fclose ($fp);
 155         $bqout = array();
 156         exec ($SpamFilters_BulkQuery . " < " . $bqfil, $bqout);
 157         foreach ($bqout as $value) {
 158             $Chunks = explode(',', $value);
 159             $SpamFilters_DNScache[$Chunks[0]]['L'] = $Chunks[1];
 160             $SpamFilters_DNScache[$Chunks[0]]['T'] = $Chunks[2] + time();
 161         }
 162         unlink($bqfil);
 163     }
 164 }
 165
 166 function start_filters() {
 167     global $mailbox, $username, $key, $imapServerAddress, $imapPort, $imap,
 168         $imap_general, $filters, $imap_stream, $imapConnection,
 169     $UseSeparateImapConnection, $AllowSpamFilters;
 170
 171 #    if ($mailbox == 'INBOX') {
 172         // Detect if we have already connected to IMAP or not.
 173         // Also check if we are forced to use a separate IMAP connection
 174         if ((!isset($imap_stream) && !isset($imapConnection)) ||
 175             $UseSeparateImapConnection) {
 176                 $stream = sqimap_login($username, $key, $imapServerAddress,
 177                                     $imapPort, 10);
 178                 $previously_connected = false;
 179         } elseif (isset($imapConnection)) {
 180             $stream = $imapConnection;
 181             $previously_connected = true;
 182         } else {
 183             $previously_connected = true;
 184             $stream = $imap_stream;
 185         }
 186
 187         if (sqimap_get_num_messages($stream, 'INBOX') > 0) {
 188             // Filter spam from inbox before we sort them into folders
 189             if ($AllowSpamFilters) {
 190                 spam_filters($stream);
 191             }
 192
 193             // Sort into folders
 194             user_filters($stream);
 195         }
 196
 197         if (!$previously_connected) {
 198             sqimap_logout($stream);
 199         }
 200 #    }
 201 }
 202
 203
 204 function user_filters($imap_stream) {
 205     global $data_dir, $username;
 206     $filters = load_filters();
 207     if (! $filters) return;
 208     $filters_user_scan = getPref($data_dir, $username, 'filters_user_scan');
 209
 210     sqimap_mailbox_select($imap_stream, 'INBOX');
 211     $id = array();
 212     // For every rule
 213     for ($i=0; $i < count($filters); $i++) {
 214         // If it is the "combo" rule
 215         if ($filters[$i]['where'] == 'To or Cc') {
 216             /*
 217             *  If it's "TO OR CC", we have to do two searches, one for TO
 218             *  and the other for CC.
 219             */
 220             $id = filter_search_and_delete($imap_stream, 'TO',
 221                   $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan, $id);
 222             $id = filter_search_and_delete($imap_stream, 'CC',
 223                   $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan, $id);
 224         } else {
 225             /*
 226             *  If it's a normal TO, CC, SUBJECT, or FROM, then handle it
 227             *  normally.
 228             */
 229             $id = filter_search_and_delete($imap_stream, $filters[$i]['where'],
 230                  $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan);
 231         }
 232     }
 233     // Clean out the mailbox whether or not auto_expunge is on
 234     // That way it looks like it was redirected properly
 235     if (count($id)) {
 236         sqimap_mailbox_expunge($imap_stream, 'INBOX');
 237     }
 238 }
 239
 240 function filter_search_and_delete($imap, $where, $what, $where_to, $user_scan, $del_id)
 241 {
 242     global $languages, $squirrelmail_language, $allow_charset_search, $uid_support;
 243     if ($user_scan == 'new') {
 244         $category = 'UNSEEN';
 245     } else {
 246         $category = 'ALL';
 247     }
 248
 249     if ($allow_charset_search && isset($languages[$squirrelmail_language]['CHARSET']) &&
 250         $languages[$squirrelmail_language]['CHARSET']) {
 251         $search_str = "SEARCH CHARSET "
 252             . strtoupper($languages[$squirrelmail_language]['CHARSET'])
 253             . ' ' . $category . ' ';
 254     } else {
 255         $search_str = 'SEARCH CHARSET US-ASCII ' . $category . ' ';
 256     }
 257     if ($where == "Header") {
 258        $what = explode(':', $what);
 259        $where = trim($where . ' ' . $what[0]);
 260        $what = addslashes(trim($what[1]));
 261     }
 262
 263     /* read data back from IMAP */
 264     $read = sqimap_run_command($imap, $search_str, true, $reponse, $message, $uid_support);
 265
 266     // This may have problems with EIMS due to it being goofy
 267
 268     for ($r=0; $r < count($read) &&
 269                 substr($read[$r], 0, 8) != '* SEARCH'; $r++) {}
 270     if ($response == 'OK') {
 271         $ids = explode(' ', $read[$r]);
 272         if (sqimap_mailbox_exists($imap, $where_to)) {
 273             for ($j=2; $j < count($ids); $j++) {
 274                 $id = trim($ids[$j]);
 275                 $del_id[] = $id;
 276                 sqimap_messages_copy ($imap, $id, $id, $where_to);
 277                 sqimap_messages_flag ($imap, $id, $id, 'Deleted',false);
 278             }
 279         }
 280     }
 281     return $del_id;
 282 }
 283
 284 // These are the spam filters
 285 function spam_filters($imap_stream) {
 286     global $data_dir, $username, $uid_support;
 287     global $SpamFilters_YourHop;
 288     global $SpamFilters_DNScache;
 289     global $SpamFilters_SharedCache;
 290     global $SpamFilters_BulkQuery;
 291
 292     $filters_spam_scan = getPref($data_dir, $username, 'filters_spam_scan');
 293     $filters_spam_folder = getPref($data_dir, $username, 'filters_spam_folder');
 294     $filters = load_spam_filters();
 295
 296     if ($SpamFilters_SharedCache) {
 297        filters_LoadCache();
 298     }
 299
 300     $run = 0;
 301
 302     foreach ($filters as $Key=> $Value) {
 303         if ($Value['enabled']) {
 304             $run ++;
 305         }
 306     }
 307
 308     // short-circuit
 309     if ($run == 0) {
 310         return;
 311     }
 312
 313     sqimap_mailbox_select($imap_stream, 'INBOX');
 314
 315     // Ask for a big list of all "Received" headers in the inbox with
 316     // flags for each message.  Kinda big.
 317     if ($filters_spam_scan != 'new') {
 318         $read = sqimap_run_command($imap_stream, 'FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
 319             '(RECEIVED)])', true, $reponse, $message, $uid_support);
 320     } else {
 321         $read = sqimap_run_command($imap_stream, 'SEARCH UNSEEN', true, $reponse, $message, $uid_support);
 322         if ($response != 'OK' || trim($read[0]) == '* SEARCH') {
 323             $read = sqimap_run_command($imap_stream, 'FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
 324             '(RECEIVED)])', true, $reponse, $message, $uid_support);
 325         } else {
 326             $read[0] = trim($read[0]);
 327             $i = 0;
 328             $imap_query = $sid.' FETCH ';
 329             $Chunks = explode(' ', $read[0]);
 330             for ($i=2; $i < (count($Chunks)-1) ; $i++) {
 331                 $imap_query .= $Chunks[$i].',';
 332             }
 333             $imap_query .= $Chunks[count($Chunks)-1];
 334             $imap_query .= ' (FLAGS BODY.PEEK[HEADER.FIELDS ';
 335             $imap_query .= '(RECEIVED)])';//\r\n";
 336             $read = sqimap_run_command($imap_stream,$imap_query, true, $reponse, $message, $uid_support);
 337         }
 338     }
 339
 340     if (isset($response) && $response != 'OK') {
 341         return;
 342     }
 343
 344     if (strlen($SpamFilters_BulkQuery) > 0) {
 345        filters_bulkquery($filters_spam_scan, $filters, $read);
 346     }
 347
 348     $i = 0;
 349     while ($i < count($read)) {
 350         // EIMS will give funky results
 351         $Chunks = explode(' ', $read[$i]);
 352         if ($Chunks[0] != '*') {
 353             $i ++;
 354             continue;
 355         }
 356         $MsgNum = $Chunks[1];
 357
 358         $IPs = array();
 359         $i ++;
 360         $IsSpam = 0;
 361
 362         // Look through all of the Received headers for IP addresses
 363         // Stop when I get ")" on a line
 364         // Stop if I get "*" on a line (don't advance)
 365         // and above all, stop if $i is bigger than the total # of lines
 366         while (($i < count($read)) &&
 367                 ($read[$i][0] != ')' && $read[$i][0] != '*' &&
 368                 $read[$i][0] != "\n") && (! $IsSpam)) {
 369             // Check to see if this line is the right "Received from" line
 370             // to check
 371             if (is_int(strpos($read[$i], $SpamFilters_YourHop))) {
 372
 373                 // short-circuit and skip work if we don't scan this one
 374                 $read[$i] = ereg_replace('[^0-9\.]', ' ', $read[$i]);
 375                 $elements = explode(' ', $read[$i]);
 376                 foreach ($elements as $value) {
 377                     if ($value != '' &&
 378                         ereg('[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}',
 379                             $value, $regs)) {
 380                         $Chunks = explode('.', $value);
 381                         if (filters_spam_check_site($Chunks[0],
 382                                 $Chunks[1], $Chunks[2], $Chunks[3],
 383                                 $filters)) {
 384                             $IsSpam ++;
 385                             break;  // no sense in checking more IPs
 386                         }
 387                         // If we've checked one IP and YourHop is
 388                         // just a space
 389                         if ($SpamFilters_YourHop == ' ') {
 390                             break;  // don't check any more
 391                         }
 392                     }
 393                 }
 394             }
 395             $i ++;
 396         }
 397
 398         // Lookie!  It's spam!  Yum!
 399         if ($IsSpam) {
 400             if (sqimap_mailbox_exists($imap_stream, $filters_spam_folder)) {
 401                 sqimap_messages_copy ($imap_stream, $MsgNum, $MsgNum,
 402                                     $filters_spam_folder);
 403                 sqimap_messages_flag ($imap_stream, $MsgNum, $MsgNum,
 404                                     'Deleted', false);
 405             }
 406         } else {
 407         }
 408     }
 409
 410     sqimap_mailbox_expunge($imap_stream, 'INBOX');
 411
 412     if ($SpamFilters_SharedCache) {
 413        filters_SaveCache();
 414     } else {
 415        session_register('SpamFilters_DNScache');
 416     }
 417
 418 }
 419
 420
 421 // Does the loop through each enabled filter for the specified IP address.
 422 // IP format:  $a.$b.$c.$d
 423 function filters_spam_check_site($a, $b, $c, $d, &$filters) {
 424     global $SpamFilters_DNScache, $SpamFilters_CacheTTL;
 425     foreach ($filters as $key => $value) {
 426         if ($filters[$key]['enabled']) {
 427             if ($filters[$key]['dns']) {
 428                 $filter_revip = $d . '.' . $c . '.' . $b . '.' . $a . '.' .
 429                                 $filters[$key]['dns'];
 430                 if (strlen($SpamFilters_DNScache[$filter_revip]['L']) == 0) {
 431                     $SpamFilters_DNScache[$filter_revip]['L'] =
 432                                     gethostbyname($filter_revip);
 433                     $SpamFilters_DNScache[$filter_revip]['T'] =
 434                                        time() + $SpamFilters_CacheTTL;
 435                 }
 436                 if ($SpamFilters_DNScache[$filter_revip]['L'] ==
 437                     $filters[$key]['result']) {
 438                     return 1;
 439                 }
 440             }
 441         }
 442     }
 443     return 0;
 444 }
 445
 446 function load_filters() {
 447     global $data_dir, $username;
 448
 449     $filters = array();
 450     for ($i=0; $fltr = getPref($data_dir, $username, 'filter' . $i); $i++) {
 451         $ary = explode(',', $fltr);
 452         $filters[$i]['where'] = $ary[0];
 453         $filters[$i]['what'] = $ary[1];
 454         $filters[$i]['folder'] = $ary[2];
 455     }
 456     return $filters;
 457 }
 458
 459 function load_spam_filters() {
 460     global $data_dir, $username, $SpamFilters_ShowCommercial;
 461
 462     if ($SpamFilters_ShowCommercial) {
 463         $filters['MAPS RBL']['prefname'] = 'filters_spam_maps_rbl';
 464         $filters['MAPS RBL']['name'] = 'MAPS Realtime Blackhole List';
 465         $filters['MAPS RBL']['link'] = 'http://www.mail-abuse.org/rbl/';
 466         $filters['MAPS RBL']['dns'] = 'blackholes.mail-abuse.org';
 467         $filters['MAPS RBL']['result'] = '127.0.0.2';
 468         $filters['MAPS RBL']['comment'] =
 469             _("COMMERCIAL - This list contains servers that are verified spam senders. It is a pretty reliable list to scan spam from.");
 470
 471         $filters['MAPS RSS']['prefname'] = 'filters_spam_maps_rss';
 472         $filters['MAPS RSS']['name'] = 'MAPS Relay Spam Stopper';
 473         $filters['MAPS RSS']['link'] = 'http://www.mail-abuse.org/rss/';
 474         $filters['MAPS RSS']['dns'] = 'relays.mail-abuse.org';
 475         $filters['MAPS RSS']['result'] = '127.0.0.2';
 476         $filters['MAPS RSS']['comment'] =
 477             _("COMMERCIAL - Servers that are configured (or misconfigured) to allow spam to be relayed through their system will be banned with this.  Another good one to use.");
 478
 479         $filters['MAPS DUL']['prefname'] = 'filters_spam_maps_dul';
 480         $filters['MAPS DUL']['name'] = 'MAPS Dial-Up List';
 481         $filters['MAPS DUL']['link'] = 'http://www.mail-abuse.org/dul/';
 482         $filters['MAPS DUL']['dns'] = 'dialups.mail-abuse.org';
 483         $filters['MAPS DUL']['result'] = '127.0.0.3';
 484         $filters['MAPS DUL']['comment'] =
 485             _("COMMERCIAL - Dial-up users are often filtered out since they should use their ISP's mail servers to send mail.  Spammers typically get a dial-up account and send spam directly from there.");
 486
 487         $filters['MAPS RBLplus-RBL']['prefname'] = 'filters_spam_maps_rblplus_rbl';
 488         $filters['MAPS RBLplus-RBL']['name'] = 'MAPS RBL+ RBL List';
 489         $filters['MAPS RBLplus-RBL']['link'] = 'http://www.mail-abuse.org/';
 490         $filters['MAPS RBLplus-RBL']['dns'] = 'rbl-plus.mail-abuse.org';
 491         $filters['MAPS RBLplus-RBL']['result'] = '127.0.0.2';
 492         $filters['MAPS RBLplus-RBL']['comment'] =
 493             _("COMMERCIAL - RBL+ Blackhole entries.");
 494
 495         $filters['MAPS RBLplus-RSS']['prefname'] = 'filters_spam_maps_rblplus_rss';
 496         $filters['MAPS RBLplus-RSS']['name'] = 'MAPS RBL+ List RSS entries';
 497         $filters['MAPS RBLplus-RSS']['link'] = 'http://www.mail-abuse.org/';
 498         $filters['MAPS RBLplus-RSS']['dns'] = 'rbl-plus.mail-abuse.org';
 499         $filters['MAPS RBLplus-RSS']['result'] = '127.0.0.2';
 500         $filters['MAPS RBLplus-RSS']['comment'] =
 501             _("COMMERCIAL - RBL+ OpenRelay entries.");
 502
 503         $filters['MAPS RBLplus-DUL']['prefname'] = 'filters_spam_maps_rblplus_dul';
 504         $filters['MAPS RBLplus-DUL']['name'] = 'MAPS RBL+ List DUL entries';
 505         $filters['MAPS RBLplus-DUL']['link'] = 'http://www.mail-abuse.org/';
 506         $filters['MAPS RBLplus-DUL']['dns'] = 'rbl-plus.mail-abuse.org';
 507         $filters['MAPS RBLplus-DUL']['result'] = '127.0.0.3';
 508         $filters['MAPS RBLplus-DUL']['comment'] =
 509             _("COMMERCIAL - RBL+ Dial-up entries.");
 510     }
 511
 512     $filters['Osirusoft Relays']['prefname'] = 'filters_spam_maps_osirusoft_relay';
 513     $filters['Osirusoft Relays']['name'] = 'Osirusoft Relay List';
 514     $filters['Osirusoft Relays']['link'] = 'http://relays.osirusoft.com/';
 515     $filters['Osirusoft Relays']['dns'] = 'relays.osirusoft.com';
 516     $filters['Osirusoft Relays']['result'] = '127.0.0.2';
 517     $filters['Osirusoft Relays']['comment'] =
 518         _("FREE - Osirusoft Relays - Osirusofts list of verified open relays. Seems to include servers used by abuse@uunet.net auto-replies too.");
 519
 520     $filters['Osirusoft DUL']['prefname'] = 'filters_spam_maps_osirusoft_dul';
 521     $filters['Osirusoft DUL']['name'] = 'Osirusoft Dialup List';
 522     $filters['Osirusoft DUL']['link'] = 'http://relays.osirusoft.com/';
 523     $filters['Osirusoft DUL']['dns'] = 'relays.osirusoft.com';
 524     $filters['Osirusoft DUL']['result'] = '127.0.0.3';
 525     $filters['Osirusoft DUL']['comment'] =
 526         _("FREE - Osirusoft Dialups - Osirusofts Dialup Spam Source list.");
 527
 528     $filters['Osirusoft Spam Source']['prefname'] = 'filters_spam_maps_osirusoft_rc';
 529     $filters['Osirusoft Spam Source']['name'] = 'Osirusoft Confirmed Spam Source List';
 530     $filters['Osirusoft Spam Source']['link'] = 'http://relays.osirusoft.com/';
 531     $filters['Osirusoft Spam Source']['dns'] = 'relays.osirusoft.com';
 532     $filters['Osirusoft Spam Source']['result'] = '127.0.0.4';
 533     $filters['Osirusoft Spam Source']['comment'] =
 534         _("FREE - Osirusoft Confirmed Spam Source - Sites that continually spam and have been manually added after multiple nominations. Use with caution. Seems to catch abuse auto-replies from some ISPs.");
 535
 536     $filters['Osirusoft Smart Host']['prefname'] = 'filters_spam_maps_osirusoft_sh';
 537     $filters['Osirusoft Smart Host']['name'] = 'Osirusoft Smart Host List';
 538     $filters['Osirusoft Smart Host']['link'] = 'http://relays.osirusoft.com/';
 539     $filters['Osirusoft Smart Host']['dns'] = 'relays.osirusoft.com';
 540     $filters['Osirusoft Smart Host']['result'] = '127.0.0.5';
 541     $filters['Osirusoft Smart Host']['comment'] =
 542         _("FREE - Osirusoft Smart Hosts - List of hosts that are secure but relay for other mail servers that are not secure.");
 543
 544     $filters['Osirusoft SPAMware']['prefname'] = 'filters_spam_maps_osirusoft_ss';
 545     $filters['Osirusoft SPAMware']['name'] = 'Osirusoft Spamware Developers List';
 546     $filters['Osirusoft SPAMware']['link'] = 'http://relays.osirusoft.com/';
 547     $filters['Osirusoft SPAMware']['dns'] = 'relays.osirusoft.com';
 548     $filters['Osirusoft SPAMware']['result'] = '127.0.0.6';
 549     $filters['Osirusoft SPAMware']['comment'] =
 550         _("FREE - Osirusoft Spamware Developers - It is believed that these are IP ranges of companies that are known to produce spam software. Seems to catch abuse auto-replies from some ISPs.");
 551
 552     $filters['Osirusoft Unc. OptIn']['prefname'] = 'filters_spam_maps_osirusoft_sl';
 553     $filters['Osirusoft Unc. OptIn']['name'] = 'Osirusoft Unconfirmed OptIn Server List';
 554     $filters['Osirusoft Unc. OptIn']['link'] = 'http://relays.osirusoft.com/';
 555     $filters['Osirusoft Unc. OptIn']['dns'] = 'relays.osirusoft.com';
 556     $filters['Osirusoft Unc. OptIn']['result'] = '127.0.0.7';
 557     $filters['Osirusoft Unc. OptIn']['comment'] =
 558         _("FREE - Osirusoft Unconfirmed OptIn Servers - List of listservers that opt users in without confirmation.");
 559
 560     $filters['Osirusoft Insecure Formmail']['prefname'] = 'filters_spam_maps_osirusoft_fm';
 561     $filters['Osirusoft Insecure Formmail']['name'] = 'Osirusoft Insecure formmail.cvi Script List';
 562     $filters['Osirusoft Insecure Formmail']['link'] = 'http://relays.osirusoft.com/';
 563     $filters['Osirusoft Insecure Formmail']['dns'] = 'relays.osirusoft.com';
 564     $filters['Osirusoft Insecure Formmail']['result'] = '127.0.0.8';
 565     $filters['Osirusoft Insecure Formmail']['comment'] =
 566         _("FREE - Osirusoft Insecure formmail.cgi scripts - List of insecure formmail.cgi scripts. (planned).");
 567
 568     $filters['Osirusoft Open Proxy']['prefname'] = 'filters_spam_maps_osirusoft_op';
 569     $filters['Osirusoft Open Proxy']['name'] = 'Osirusoft Open Proxy Server List';
 570     $filters['Osirusoft Open Proxy']['link'] = 'http://relays.osirusoft.com/';
 571     $filters['Osirusoft Open Proxy']['dns'] = 'relays.osirusoft.com';
 572     $filters['Osirusoft Open Proxy']['result'] = '127.0.0.9';
 573     $filters['Osirusoft Open Proxy']['comment'] =
 574         _("FREE - Osirusoft Open Proxy Servers - List of Open Proxy Servers.");
 575
 576     $filters['ORDB']['prefname'] = 'filters_spam_ordb';
 577     $filters['ORDB']['name'] = 'Open Relay Database List';
 578     $filters['ORDB']['link'] = 'http://www.ordb.org/';
 579     $filters['ORDB']['dns'] = 'relays.ordb.org';
 580     $filters['ORDB']['result'] = '127.0.0.2';
 581     $filters['ORDB']['comment'] =
 582         _("FREE - ORDB was born when ORBS went off the air. It seems to have fewer false positives than ORBS did though.");
 583
 584     $filters['FiveTen Direct']['prefname'] = 'filters_spam_fiveten_src';
 585     $filters['FiveTen Direct']['name'] = 'Five-Ten-sg.com Direct SPAM Sources';
 586     $filters['FiveTen Direct']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 587     $filters['FiveTen Direct']['dns'] = 'blackholes.five-ten-sg.com';
 588     $filters['FiveTen Direct']['result'] = '127.0.0.2';
 589     $filters['FiveTen Direct']['comment'] =
 590         _("FREE - Five-Ten-sg.com - Direct SPAM sources.");
 591
 592     $filters['FiveTen DUL']['prefname'] = 'filters_spam_fiveten_dul';
 593     $filters['FiveTen DUL']['name'] = 'Five-Ten-sg.com DUL Lists';
 594     $filters['FiveTen DUL']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 595     $filters['FiveTen DUL']['dns'] = 'blackholes.five-ten-sg.com';
 596     $filters['FiveTen DUL']['result'] = '127.0.0.3';
 597     $filters['FiveTen DUL']['comment'] =
 598         _("FREE - Five-Ten-sg.com - Dial-up lists - includes some DSL IPs.");
 599
 600     $filters['FiveTen Unc. OptIn']['prefname'] = 'filters_spam_fiveten_oi';
 601     $filters['FiveTen Unc. OptIn']['name'] = 'Five-Ten-sg.com Unconfirmed OptIn Lists';
 602     $filters['FiveTen Unc. OptIn']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 603     $filters['FiveTen Unc. OptIn']['dns'] = 'blackholes.five-ten-sg.com';
 604     $filters['FiveTen Unc. OptIn']['result'] = '127.0.0.4';
 605     $filters['FiveTen Unc. OptIn']['comment'] =
 606         _("FREE - Five-Ten-sg.com - Bulk mailers that do not use confirmed opt-in.");
 607
 608     $filters['FiveTen Others']['prefname'] = 'filters_spam_fiveten_oth';
 609     $filters['FiveTen Others']['name'] = 'Five-Ten-sg.com Other Misc. Servers';
 610     $filters['FiveTen Others']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 611     $filters['FiveTen Others']['dns'] = 'blackholes.five-ten-sg.com';
 612     $filters['FiveTen Others']['result'] = '127.0.0.5';
 613     $filters['FiveTen Others']['comment'] =
 614         _("FREE - Five-Ten-sg.com - Other misc. servers.");
 615
 616     $filters['FiveTen Single Stage']['prefname'] = 'filters_spam_fiveten_ss';
 617     $filters['FiveTen Single Stage']['name'] = 'Five-Ten-sg.com Single Stage Servers';
 618     $filters['FiveTen Single Stage']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 619     $filters['FiveTen Single Stage']['dns'] = 'blackholes.five-ten-sg.com';
 620     $filters['FiveTen Single Stage']['result'] = '127.0.0.6';
 621     $filters['FiveTen Single Stage']['comment'] =
 622         _("FREE - Five-Ten-sg.com - Single Stage servers.");
 623
 624     $filters['FiveTen SPAM Support']['prefname'] = 'filters_spam_fiveten_supp';
 625     $filters['FiveTen SPAM Support']['name'] = 'Five-Ten-sg.com SPAM Support Servers';
 626     $filters['FiveTen SPAM Support']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 627     $filters['FiveTen SPAM Support']['dns'] = 'blackholes.five-ten-sg.com';
 628     $filters['FiveTen SPAM Support']['result'] = '127.0.0.7';
 629     $filters['FiveTen SPAM Support']['comment'] =
 630         _("FREE - Five-Ten-sg.com - SPAM Support servers.");
 631
 632     $filters['FiveTen Web forms']['prefname'] = 'filters_spam_fiveten_wf';
 633     $filters['FiveTen Web forms']['name'] = 'Five-Ten-sg.com Web Form IPs';
 634     $filters['FiveTen Web forms']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 635     $filters['FiveTen Web forms']['dns'] = 'blackholes.five-ten-sg.com';
 636     $filters['FiveTen Web forms']['result'] = '127.0.0.8';
 637     $filters['FiveTen Web forms']['comment'] =
 638         _("FREE - Five-Ten-sg.com - Web Form IPs.");
 639
 640     $filters['Dorkslayers']['prefname'] = 'filters_spam_dorks';
 641     $filters['Dorkslayers']['name'] = 'Dorkslayers Lists';
 642     $filters['Dorkslayers']['link'] = 'http://www.dorkslayers.com';
 643     $filters['Dorkslayers']['dns'] = 'orbs.dorkslayers.com';
 644     $filters['Dorkslayers']['result'] = '127.0.0.2';
 645     $filters['Dorkslayers']['comment'] =
 646         _("FREE - Dorkslayers appears to include only really bad open relays outside the US to avoid being sued. Interestingly enough, their website recommends you NOT use their service.");
 647
 648     $filters['SPAMhaus']['prefname'] = 'filters_spam_spamhaus';
 649     $filters['SPAMhaus']['name'] = 'SPAMhaus Lists';
 650     $filters['SPAMhaus']['link'] = 'http://www.spamhaus.org';
 651     $filters['SPAMhaus']['dns'] = 'sbl.spamhaus.org';
 652     $filters['SPAMhaus']['result'] = '127.0.0.6';
 653     $filters['SPAMhaus']['comment'] =
 654         _("FREE - SPAMhaus - A list of well-known SPAM sources.");
 655
 656     $filters['SPAMcop']['prefname'] = 'filters_spam_spamcop';
 657     $filters['SPAMcop']['name'] = 'SPAM Cop Lists';
 658     $filters['SPAMcop']['link'] = 'http://spamcop.net/bl.shtml';
 659     $filters['SPAMcop']['dns'] = 'bl.spamcop.net';
 660     $filters['SPAMcop']['result'] = '127.0.0.2';
 661     $filters['SPAMcop']['comment'] =
 662         _("FREE, for now - SPAMCOP - An interesting solution that lists servers that have a very high spam to legit email ratio (85% or more).");
 663
 664     $filters['dev.null.dk']['prefname'] = 'filters_spam_devnull';
 665     $filters['dev.null.dk']['name'] = 'dev.null.dk Lists';
 666     $filters['dev.null.dk']['link'] = 'http://dev.null.dk/';
 667     $filters['dev.null.dk']['dns'] = 'dev.null.dk';
 668     $filters['dev.null.dk']['result'] = '127.0.0.2';
 669     $filters['dev.null.dk']['comment'] =
 670         _("FREE - dev.null.dk - I don't have any detailed info on this list.");
 671
 672     $filters['visi.com']['prefname'] = 'filters_spam_visi';
 673     $filters['visi.com']['name'] = 'visi.com Relay Stop List';
 674     $filters['visi.com']['link'] = 'http://relays.visi.com';
 675     $filters['visi.com']['dns'] = 'relays.visi.com';
 676     $filters['visi.com']['result'] = '127.0.0.2';
 677     $filters['visi.com']['comment'] =
 678         _("FREE - visi.com - Relay Stop List. Very conservative OpenRelay List.");
 679
 680     $filters['2mbit.com Open Relays']['prefname'] = 'filters_spam_2mb_or';
 681     $filters['2mbit.com Open Relays']['name'] = '2mbit.com Open Relays List';
 682     $filters['2mbit.com Open Relays']['link'] = 'http://www.2mbit.com/sbl.php';
 683     $filters['2mbit.com Open Relays']['dns'] = 'blackholes.2mbit.com';
 684     $filters['2mbit.com Open Relays']['result'] = '127.0.0.2';
 685     $filters['2mbit.com Open Relays']['comment'] =
 686         _("FREE - 2mbit.com Open Relays - Another list of Open Relays.");
 687
 688     $filters['2mbit.com SPAM Source']['prefname'] = 'filters_spam_2mb_ss';
 689     $filters['2mbit.com SPAM Source']['name'] = '2mbit.com SPAM Source List';
 690     $filters['2mbit.com SPAM Source']['link'] = 'http://www.2mbit.com/sbl.php';
 691     $filters['2mbit.com SPAM Source']['dns'] = 'blackholes.2mbit.com';
 692     $filters['2mbit.com SPAM Source']['result'] = '127.0.0.4';
 693     $filters['2mbit.com SPAM Source']['comment'] =
 694         _("FREE - 2mbit.com SPAM Source - List of Direct SPAM Sources.");
 695
 696     $filters['2mbit.com SPAM ISPs']['prefname'] = 'filters_spam_2mb_isp';
 697     $filters['2mbit.com SPAM ISPs']['name'] = '2mbit.com SPAM-friendly ISP List';
 698     $filters['2mbit.com SPAM ISPs']['link'] = 'http://www.2mbit.com/sbl.php';
 699     $filters['2mbit.com SPAM ISPs']['dns'] = 'blackholes.2mbit.com';
 700     $filters['2mbit.com SPAM ISPs']['result'] = '127.0.0.10';
 701     $filters['2mbit.com SPAM ISPs']['comment'] =
 702         _("FREE - 2mbit.com SPAM ISPs - List of SPAM-friendly ISPs.");
 703
 704     $filters['Leadmon DUL']['prefname'] = 'filters_spam_lm_dul';
 705     $filters['Leadmon DUL']['name'] = 'Leadmon.net DUL List';
 706     $filters['Leadmon DUL']['link'] = 'http://www.leadmon.net/spamguard/';
 707     $filters['Leadmon DUL']['dns'] = 'spamguard.leadmon.net';
 708     $filters['Leadmon DUL']['result'] = '127.0.0.2';
 709     $filters['Leadmon DUL']['comment'] =
 710         _("FREE - Leadmon DUL - Another list of Dial-up or otherwise dynamically assigned IPs.");
 711
 712     $filters['Leadmon SPAM Source']['prefname'] = 'filters_spam_lm_ss';
 713     $filters['Leadmon SPAM Source']['name'] = 'Leadmon.net SPAM Source List';
 714     $filters['Leadmon SPAM Source']['link'] = 'http://www.leadmon.net/spamguard/';
 715     $filters['Leadmon SPAM Source']['dns'] = 'spamguard.leadmon.net';
 716     $filters['Leadmon SPAM Source']['result'] = '127.0.0.3';
 717     $filters['Leadmon SPAM Source']['comment'] =
 718         _("FREE - Leadmon SPAM Source - List of IPs Leadmon.net has received SPAM directly from.");
 719
 720     $filters['Leadmon Bulk Mailers']['prefname'] = 'filters_spam_lm_bm';
 721     $filters['Leadmon Bulk Mailers']['name'] = 'Leadmon.net Bulk Mailers List';
 722     $filters['Leadmon Bulk Mailers']['link'] = 'http://www.leadmon.net/spamguard/';
 723     $filters['Leadmon Bulk Mailers']['dns'] = 'spamguard.leadmon.net';
 724     $filters['Leadmon Bulk Mailers']['result'] = '127.0.0.4';
 725     $filters['Leadmon Bulk Mailers']['comment'] =
 726         _("FREE - Leadmon Bulk Mailers - Bulk mailers that do not require confirmed opt-in or that have allowed known spammers to become clients and abuse their services.");
 727
 728     $filters['Leadmon Open Relays']['prefname'] = 'filters_spam_lm_or';
 729     $filters['Leadmon Open Relays']['name'] = 'Leadmon.net Open Relays List';
 730     $filters['Leadmon Open Relays']['link'] = 'http://www.leadmon.net/spamguard/';
 731     $filters['Leadmon Open Relays']['dns'] = 'spamguard.leadmon.net';
 732     $filters['Leadmon Open Relays']['result'] = '127.0.0.5';
 733     $filters['Leadmon Open Relays']['comment'] =
 734         _("FREE - Leadmon Open Relays - Single Stage Open Relays that are not listed on other active RBLs.");
 735
 736     $filters['Leadmon Multi-stage']['prefname'] = 'filters_spam_lm_ms';
 737     $filters['Leadmon Multi-stage']['name'] = 'Leadmon.net Multi-Stage Relay List';
 738     $filters['Leadmon Multi-stage']['link'] = 'http://www.leadmon.net/spamguard/';
 739     $filters['Leadmon Multi-stage']['dns'] = 'spamguard.leadmon.net';
 740     $filters['Leadmon Multi-stage']['result'] = '127.0.0.6';
 741     $filters['Leadmon Multi-stage']['comment'] =
 742         _("FREE - Leadmon Multi-stage - Multi-Stage Open Relays that are not listed on other active RBLs and that have sent SPAM to Leadmon.net.");
 743
 744     $filters['Leadmon SpamBlock']['prefname'] = 'filters_spam_lm_sb';
 745     $filters['Leadmon SpamBlock']['name'] = 'Leadmon.net SpamBlock Sites List';
 746     $filters['Leadmon SpamBlock']['link'] = 'http://www.leadmon.net/spamguard/';
 747     $filters['Leadmon SpamBlock']['dns'] = 'spamguard.leadmon.net';
 748     $filters['Leadmon SpamBlock']['result'] = '127.0.0.7';
 749     $filters['Leadmon SpamBlock']['comment'] =
 750         _("FREE - Leadmon SpamBlock - Sites on this listing have sent Leadmon.net direct SPAM from IPs in netblocks where the entire block has no DNS mappings. It's a list of BLOCKS of IPs being used by people who have SPAMmed Leadmon.net.");
 751
 752     $filters['NJABL Open Relays']['prefname'] = 'filters_spam_njabl_or';
 753     $filters['NJABL Open Relays']['name'] = 'NJABL Open Relay/Direct Spam Source List';
 754     $filters['NJABL Open Relays']['link'] = 'http://www.njabl.org/';
 755     $filters['NJABL Open Relays']['dns'] = 'dnsbl.njabl.org';
 756     $filters['NJABL Open Relays']['result'] = '127.0.0.2';
 757     $filters['NJABL Open Relays']['comment'] =
 758         _("FREE, for now - Not Just Another Blacklist - Both Open Relays and Direct SPAM Sources.");
 759
 760     $filters['NJABL DUL']['prefname'] = 'filters_spam_njabl_dul';
 761     $filters['NJABL DUL']['name'] = 'NJABL Dial-ups List';
 762     $filters['NJABL DUL']['link'] = 'http://www.njabl.org/';
 763     $filters['NJABL DUL']['dns'] = 'dnsbl.njabl.org';
 764     $filters['NJABL DUL']['result'] = '127.0.0.3';
 765     $filters['NJABL DUL']['comment'] =
 766         _("FREE, for now - Not Just Another Blacklist - Dial-up IPs.");
 767
 768     $filters['Conf DSBL.ORG Relay']['prefname'] = 'filters_spam_dsbl_conf_ss';
 769     $filters['Conf DSBL.ORG Relay']['name'] = 'DSBL.org Confirmed Relay List';
 770     $filters['Conf DSBL.ORG Relay']['link'] = 'http://www.dsbl.org/';
 771     $filters['Conf DSBL.ORG Relay']['dns'] = 'list.dsbl.org';
 772     $filters['Conf DSBL.ORG Relay']['result'] = '127.0.0.2';
 773     $filters['Conf DSBL.ORG Relay']['comment'] =
 774         _("FREE - Distributed Sender Boycott List - Confirmed Relays");
 775
 776     $filters['Conf DSBL.ORG Multi-Stage']['prefname'] = 'filters_spam_dsbl_conf_ms';
 777     $filters['Conf DSBL.ORG Multi-Stage']['name'] = 'DSBL.org Confirmed Multi-Stage Relay List';
 778     $filters['Conf DSBL.ORG Multi-Stage']['link'] = 'http://www.dsbl.org/';
 779     $filters['Conf DSBL.ORG Multi-Stage']['dns'] = 'multihop.dsbl.org';
 780     $filters['Conf DSBL.ORG Multi-Stage']['result'] = '127.0.0.2';
 781     $filters['Conf DSBL.ORG Multi-Stage']['comment'] =
 782         _("FREE - Distributed Sender Boycott List - Confirmed Multi-stage Relays");
 783
 784     $filters['UN-Conf DSBL.ORG']['prefname'] = 'filters_spam_dsbl_unc';
 785     $filters['UN-Conf DSBL.ORG']['name'] = 'DSBL.org UN-Confirmed Relay List';
 786     $filters['UN-Conf DSBL.ORG']['link'] = 'http://www.dsbl.org/';
 787     $filters['UN-Conf DSBL.ORG']['dns'] = 'unconfirmed.dsbl.org';
 788     $filters['UN-Conf DSBL.ORG']['result'] = '127.0.0.2';
 789     $filters['UN-Conf DSBL.ORG']['comment'] =
 790         _("FREE - Distributed Sender Boycott List - UN-Confirmed Relays");
 791
 792     foreach ($filters as $Key => $Value) {
 793         $filters[$Key]['enabled'] = getPref($data_dir, $username,
 794             $filters[$Key]['prefname']);
 795     }
 796
 797     return $filters;
 798 }
 799
 800 function remove_filter ($id) {
 801     global $data_dir, $username;
 802
 803     while ($nextFilter = getPref($data_dir, $username, 'filter' .
 804         ($id + 1))) {
 805         setPref($data_dir, $username, 'filter' . $id, $nextFilter);
 806         $id ++;
 807     }
 808
 809     removePref($data_dir, $username, 'filter' . $id);
 810 }
 811
 812 function filter_swap($id1, $id2) {
 813     global $data_dir, $username;
 814
 815     $FirstFilter = getPref($data_dir, $username, 'filter' . $id1);
 816     $SecondFilter = getPref($data_dir, $username, 'filter' . $id2);
 817
 818     if ($FirstFilter && $SecondFilter) {
 819         setPref($data_dir, $username, 'filter' . $id2, $FirstFilter);
 820         setPref($data_dir, $username, 'filter' . $id1, $SecondFilter);
 821     }
 822 }
 823
 824 /* This update the filter rules when
 825    renaming or deleting folders */
 826 function update_for_folder ($args) {
 827     $old_folder = $args[0];
 828         $new_folder = $args[2];
 829         $action = $args[1];
 830     global $plugins, $data_dir, $username;
 831     $filters = array();
 832     $filters = load_filters();
 833     $filter_count = count($filters);
 834     $p = 0;
 835     for ($i=0;$i<$filter_count;$i++) {
 836         if (!empty($filters)) {
 837             if ($old_folder == $filters[$i]['folder']) {
 838                 if ($action == 'rename') {
 839                     $filters[$i]['folder'] = $new_folder;
 840                     setPref($data_dir, $username, 'filter'.$i,
 841                     $filters[$i]['where'].','.$filters[$i]['what'].','.$new_folder);
 842                 }
 843                 elseif ($action == 'delete') {
 844                     remove_filter($p);
 845                     $p = $p-1;
 846                 }
 847             }
 848         $p++;
 849         }
 850     }
 851 }
 852 ?>