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, $id);
 231         }
 232     }
 233     // Clean out the mailbox whether or not auto_expunge is on
 234     // That way it looks like it was redirected properly
 235     if (count($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 &&
 250         isset($languages[$squirrelmail_language]['CHARSET']) &&
 251         $languages[$squirrelmail_language]['CHARSET']) {
 252         $search_str = 'SEARCH CHARSET '
 253                     . strtoupper($languages[$squirrelmail_language]['CHARSET'])
 254                     . ' ' . $category;
 255     } else {
 256         $search_str = 'SEARCH CHARSET US-ASCII ' . $category;
 257     }
 258     if ($where == "Header") {
 259         $what  = explode(':', $what);
 260         $where = trim($where . ' ' . $what[0]);
 261         $what  = addslashes(trim($what[1]));
 262     }
 263
 264     /* read data back from IMAP */
 265     $read = sqimap_run_command($imap, $search_str, true, $reponse, $message, $uid_support);
 266
 267     // This may have problems with EIMS due to it being goofy
 268
 269     for ($r=0; $r < count($read) &&
 270                 substr($read[$r], 0, 8) != '* SEARCH'; $r++) {}
 271     if ($response == 'OK') {
 272         $ids = explode(' ', $read[$r]);
 273         if (sqimap_mailbox_exists($imap, $where_to)) {
 274             for ($j=2; $j < count($ids); $j++) {
 275                 $id = trim($ids[$j]);
 276                 $del_id[] = $id;
 277                 sqimap_messages_copy ($imap, $id, $id, $where_to);
 278                 sqimap_messages_flag ($imap, $id, $id, 'Deleted',false);
 279             }
 280         }
 281     }
 282     return $del_id;
 283 }
 284
 285 // These are the spam filters
 286 function spam_filters($imap_stream) {
 287     global $data_dir, $username, $uid_support;
 288     global $SpamFilters_YourHop;
 289     global $SpamFilters_DNScache;
 290     global $SpamFilters_SharedCache;
 291     global $SpamFilters_BulkQuery;
 292
 293     $filters_spam_scan = getPref($data_dir, $username, 'filters_spam_scan');
 294     $filters_spam_folder = getPref($data_dir, $username, 'filters_spam_folder');
 295     $filters = load_spam_filters();
 296
 297     if ($SpamFilters_SharedCache) {
 298        filters_LoadCache();
 299     }
 300
 301     $run = 0;
 302
 303     foreach ($filters as $Key=> $Value) {
 304         if ($Value['enabled']) {
 305             $run ++;
 306         }
 307     }
 308
 309     // short-circuit
 310     if ($run == 0) {
 311         return;
 312     }
 313
 314     sqimap_mailbox_select($imap_stream, 'INBOX');
 315
 316     // Ask for a big list of all "Received" headers in the inbox with
 317     // flags for each message.  Kinda big.
 318     if ($filters_spam_scan != 'new') {
 319         $read = sqimap_run_command($imap_stream, 'FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
 320             '(RECEIVED)])', true, $reponse, $message, $uid_support);
 321     } else {
 322         $read = sqimap_run_command($imap_stream, 'SEARCH UNSEEN', true, $reponse, $message, $uid_support);
 323         if ($response != 'OK' || trim($read[0]) == '* SEARCH') {
 324             $read = sqimap_run_command($imap_stream, 'FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
 325             '(RECEIVED)])', true, $reponse, $message, $uid_support);
 326         } else {
 327             $read[0] = trim($read[0]);
 328             $i = 0;
 329             $imap_query = $sid.' FETCH ';
 330             $Chunks = explode(' ', $read[0]);
 331             for ($i=2; $i < (count($Chunks)-1) ; $i++) {
 332                 $imap_query .= $Chunks[$i].',';
 333             }
 334             $imap_query .= $Chunks[count($Chunks)-1];
 335             $imap_query .= ' (FLAGS BODY.PEEK[HEADER.FIELDS ';
 336             $imap_query .= '(RECEIVED)])';//\r\n";
 337             $read = sqimap_run_command($imap_stream,$imap_query, true, $reponse, $message, $uid_support);
 338         }
 339     }
 340
 341     if (isset($response) && $response != 'OK') {
 342         return;
 343     }
 344
 345     if (strlen($SpamFilters_BulkQuery) > 0) {
 346        filters_bulkquery($filters_spam_scan, $filters, $read);
 347     }
 348
 349     $i = 0;
 350     while ($i < count($read)) {
 351         // EIMS will give funky results
 352         $Chunks = explode(' ', $read[$i]);
 353         if ($Chunks[0] != '*') {
 354             $i ++;
 355             continue;
 356         }
 357         $MsgNum = $Chunks[1];
 358
 359         $IPs = array();
 360         $i ++;
 361         $IsSpam = 0;
 362
 363         // Look through all of the Received headers for IP addresses
 364         // Stop when I get ")" on a line
 365         // Stop if I get "*" on a line (don't advance)
 366         // and above all, stop if $i is bigger than the total # of lines
 367         while (($i < count($read)) &&
 368                 ($read[$i][0] != ')' && $read[$i][0] != '*' &&
 369                 $read[$i][0] != "\n") && (! $IsSpam)) {
 370             // Check to see if this line is the right "Received from" line
 371             // to check
 372             if (is_int(strpos($read[$i], $SpamFilters_YourHop))) {
 373
 374                 // short-circuit and skip work if we don't scan this one
 375                 $read[$i] = ereg_replace('[^0-9\.]', ' ', $read[$i]);
 376                 $elements = explode(' ', $read[$i]);
 377                 foreach ($elements as $value) {
 378                     if ($value != '' &&
 379                         ereg('[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}',
 380                             $value, $regs)) {
 381                         $Chunks = explode('.', $value);
 382                         if (filters_spam_check_site($Chunks[0],
 383                                 $Chunks[1], $Chunks[2], $Chunks[3],
 384                                 $filters)) {
 385                             $IsSpam ++;
 386                             break;  // no sense in checking more IPs
 387                         }
 388                         // If we've checked one IP and YourHop is
 389                         // just a space
 390                         if ($SpamFilters_YourHop == ' ') {
 391                             break;  // don't check any more
 392                         }
 393                     }
 394                 }
 395             }
 396             $i ++;
 397         }
 398
 399         // Lookie!  It's spam!  Yum!
 400         if ($IsSpam) {
 401             if (sqimap_mailbox_exists($imap_stream, $filters_spam_folder)) {
 402                 sqimap_messages_copy ($imap_stream, $MsgNum, $MsgNum,
 403                                     $filters_spam_folder);
 404                 sqimap_messages_flag ($imap_stream, $MsgNum, $MsgNum,
 405                                     'Deleted', false);
 406             }
 407         } else {
 408         }
 409     }
 410
 411     sqimap_mailbox_expunge($imap_stream, 'INBOX');
 412
 413     if ($SpamFilters_SharedCache) {
 414        filters_SaveCache();
 415     } else {
 416        session_register('SpamFilters_DNScache');
 417     }
 418
 419 }
 420
 421
 422 // Does the loop through each enabled filter for the specified IP address.
 423 // IP format:  $a.$b.$c.$d
 424 function filters_spam_check_site($a, $b, $c, $d, &$filters) {
 425     global $SpamFilters_DNScache, $SpamFilters_CacheTTL;
 426     foreach ($filters as $key => $value) {
 427         if ($filters[$key]['enabled']) {
 428             if ($filters[$key]['dns']) {
 429                 $filter_revip = $d . '.' . $c . '.' . $b . '.' . $a . '.' .
 430                                 $filters[$key]['dns'];
 431                 if (strlen($SpamFilters_DNScache[$filter_revip]['L']) == 0) {
 432                     $SpamFilters_DNScache[$filter_revip]['L'] =
 433                                     gethostbyname($filter_revip);
 434                     $SpamFilters_DNScache[$filter_revip]['T'] =
 435                                        time() + $SpamFilters_CacheTTL;
 436                 }
 437                 if ($SpamFilters_DNScache[$filter_revip]['L'] ==
 438                     $filters[$key]['result']) {
 439                     return 1;
 440                 }
 441             }
 442         }
 443     }
 444     return 0;
 445 }
 446
 447 function load_filters() {
 448     global $data_dir, $username;
 449
 450     $filters = array();
 451     for ($i=0; $fltr = getPref($data_dir, $username, 'filter' . $i); $i++) {
 452         $ary = explode(',', $fltr);
 453         $filters[$i]['where'] = $ary[0];
 454         $filters[$i]['what'] = $ary[1];
 455         $filters[$i]['folder'] = $ary[2];
 456     }
 457     return $filters;
 458 }
 459
 460 function load_spam_filters() {
 461     global $data_dir, $username, $SpamFilters_ShowCommercial;
 462
 463     if ($SpamFilters_ShowCommercial) {
 464         $filters['MAPS RBL']['prefname'] = 'filters_spam_maps_rbl';
 465         $filters['MAPS RBL']['name'] = 'MAPS Realtime Blackhole List';
 466         $filters['MAPS RBL']['link'] = 'http://www.mail-abuse.org/rbl/';
 467         $filters['MAPS RBL']['dns'] = 'blackholes.mail-abuse.org';
 468         $filters['MAPS RBL']['result'] = '127.0.0.2';
 469         $filters['MAPS RBL']['comment'] =
 470             _("COMMERCIAL - This list contains servers that are verified spam senders. It is a pretty reliable list to scan spam from.");
 471
 472         $filters['MAPS RSS']['prefname'] = 'filters_spam_maps_rss';
 473         $filters['MAPS RSS']['name'] = 'MAPS Relay Spam Stopper';
 474         $filters['MAPS RSS']['link'] = 'http://www.mail-abuse.org/rss/';
 475         $filters['MAPS RSS']['dns'] = 'relays.mail-abuse.org';
 476         $filters['MAPS RSS']['result'] = '127.0.0.2';
 477         $filters['MAPS RSS']['comment'] =
 478             _("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.");
 479
 480         $filters['MAPS DUL']['prefname'] = 'filters_spam_maps_dul';
 481         $filters['MAPS DUL']['name'] = 'MAPS Dial-Up List';
 482         $filters['MAPS DUL']['link'] = 'http://www.mail-abuse.org/dul/';
 483         $filters['MAPS DUL']['dns'] = 'dialups.mail-abuse.org';
 484         $filters['MAPS DUL']['result'] = '127.0.0.3';
 485         $filters['MAPS DUL']['comment'] =
 486             _("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.");
 487
 488         $filters['MAPS RBLplus-RBL']['prefname'] = 'filters_spam_maps_rblplus_rbl';
 489         $filters['MAPS RBLplus-RBL']['name'] = 'MAPS RBL+ RBL List';
 490         $filters['MAPS RBLplus-RBL']['link'] = 'http://www.mail-abuse.org/';
 491         $filters['MAPS RBLplus-RBL']['dns'] = 'rbl-plus.mail-abuse.org';
 492         $filters['MAPS RBLplus-RBL']['result'] = '127.0.0.2';
 493         $filters['MAPS RBLplus-RBL']['comment'] =
 494             _("COMMERCIAL - RBL+ Blackhole entries.");
 495
 496         $filters['MAPS RBLplus-RSS']['prefname'] = 'filters_spam_maps_rblplus_rss';
 497         $filters['MAPS RBLplus-RSS']['name'] = 'MAPS RBL+ List RSS entries';
 498         $filters['MAPS RBLplus-RSS']['link'] = 'http://www.mail-abuse.org/';
 499         $filters['MAPS RBLplus-RSS']['dns'] = 'rbl-plus.mail-abuse.org';
 500         $filters['MAPS RBLplus-RSS']['result'] = '127.0.0.2';
 501         $filters['MAPS RBLplus-RSS']['comment'] =
 502             _("COMMERCIAL - RBL+ OpenRelay entries.");
 503
 504         $filters['MAPS RBLplus-DUL']['prefname'] = 'filters_spam_maps_rblplus_dul';
 505         $filters['MAPS RBLplus-DUL']['name'] = 'MAPS RBL+ List DUL entries';
 506         $filters['MAPS RBLplus-DUL']['link'] = 'http://www.mail-abuse.org/';
 507         $filters['MAPS RBLplus-DUL']['dns'] = 'rbl-plus.mail-abuse.org';
 508         $filters['MAPS RBLplus-DUL']['result'] = '127.0.0.3';
 509         $filters['MAPS RBLplus-DUL']['comment'] =
 510             _("COMMERCIAL - RBL+ Dial-up entries.");
 511     }
 512
 513     $filters['Osirusoft Relays']['prefname'] = 'filters_spam_maps_osirusoft_relay';
 514     $filters['Osirusoft Relays']['name'] = 'Osirusoft Relay List';
 515     $filters['Osirusoft Relays']['link'] = 'http://relays.osirusoft.com/';
 516     $filters['Osirusoft Relays']['dns'] = 'relays.osirusoft.com';
 517     $filters['Osirusoft Relays']['result'] = '127.0.0.2';
 518     $filters['Osirusoft Relays']['comment'] =
 519         _("FREE - Osirusoft Relays - Osirusofts list of verified open relays. Seems to include servers used by abuse@uunet.net auto-replies too.");
 520
 521     $filters['Osirusoft DUL']['prefname'] = 'filters_spam_maps_osirusoft_dul';
 522     $filters['Osirusoft DUL']['name'] = 'Osirusoft Dialup List';
 523     $filters['Osirusoft DUL']['link'] = 'http://relays.osirusoft.com/';
 524     $filters['Osirusoft DUL']['dns'] = 'relays.osirusoft.com';
 525     $filters['Osirusoft DUL']['result'] = '127.0.0.3';
 526     $filters['Osirusoft DUL']['comment'] =
 527         _("FREE - Osirusoft Dialups - Osirusofts Dialup Spam Source list.");
 528
 529     $filters['Osirusoft Spam Source']['prefname'] = 'filters_spam_maps_osirusoft_rc';
 530     $filters['Osirusoft Spam Source']['name'] = 'Osirusoft Confirmed Spam Source List';
 531     $filters['Osirusoft Spam Source']['link'] = 'http://relays.osirusoft.com/';
 532     $filters['Osirusoft Spam Source']['dns'] = 'relays.osirusoft.com';
 533     $filters['Osirusoft Spam Source']['result'] = '127.0.0.4';
 534     $filters['Osirusoft Spam Source']['comment'] =
 535         _("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.");
 536
 537     $filters['Osirusoft Smart Host']['prefname'] = 'filters_spam_maps_osirusoft_sh';
 538     $filters['Osirusoft Smart Host']['name'] = 'Osirusoft Smart Host List';
 539     $filters['Osirusoft Smart Host']['link'] = 'http://relays.osirusoft.com/';
 540     $filters['Osirusoft Smart Host']['dns'] = 'relays.osirusoft.com';
 541     $filters['Osirusoft Smart Host']['result'] = '127.0.0.5';
 542     $filters['Osirusoft Smart Host']['comment'] =
 543         _("FREE - Osirusoft Smart Hosts - List of hosts that are secure but relay for other mail servers that are not secure.");
 544
 545     $filters['Osirusoft SPAMware']['prefname'] = 'filters_spam_maps_osirusoft_ss';
 546     $filters['Osirusoft SPAMware']['name'] = 'Osirusoft Spamware Developers List';
 547     $filters['Osirusoft SPAMware']['link'] = 'http://relays.osirusoft.com/';
 548     $filters['Osirusoft SPAMware']['dns'] = 'relays.osirusoft.com';
 549     $filters['Osirusoft SPAMware']['result'] = '127.0.0.6';
 550     $filters['Osirusoft SPAMware']['comment'] =
 551         _("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.");
 552
 553     $filters['Osirusoft Unc. OptIn']['prefname'] = 'filters_spam_maps_osirusoft_sl';
 554     $filters['Osirusoft Unc. OptIn']['name'] = 'Osirusoft Unconfirmed OptIn Server List';
 555     $filters['Osirusoft Unc. OptIn']['link'] = 'http://relays.osirusoft.com/';
 556     $filters['Osirusoft Unc. OptIn']['dns'] = 'relays.osirusoft.com';
 557     $filters['Osirusoft Unc. OptIn']['result'] = '127.0.0.7';
 558     $filters['Osirusoft Unc. OptIn']['comment'] =
 559         _("FREE - Osirusoft Unconfirmed OptIn Servers - List of listservers that opt users in without confirmation.");
 560
 561     $filters['Osirusoft Insecure Formmail']['prefname'] = 'filters_spam_maps_osirusoft_fm';
 562     $filters['Osirusoft Insecure Formmail']['name'] = 'Osirusoft Insecure formmail.cvi Script List';
 563     $filters['Osirusoft Insecure Formmail']['link'] = 'http://relays.osirusoft.com/';
 564     $filters['Osirusoft Insecure Formmail']['dns'] = 'relays.osirusoft.com';
 565     $filters['Osirusoft Insecure Formmail']['result'] = '127.0.0.8';
 566     $filters['Osirusoft Insecure Formmail']['comment'] =
 567         _("FREE - Osirusoft Insecure formmail.cgi scripts - List of insecure formmail.cgi scripts. (planned).");
 568
 569     $filters['Osirusoft Open Proxy']['prefname'] = 'filters_spam_maps_osirusoft_op';
 570     $filters['Osirusoft Open Proxy']['name'] = 'Osirusoft Open Proxy Server List';
 571     $filters['Osirusoft Open Proxy']['link'] = 'http://relays.osirusoft.com/';
 572     $filters['Osirusoft Open Proxy']['dns'] = 'relays.osirusoft.com';
 573     $filters['Osirusoft Open Proxy']['result'] = '127.0.0.9';
 574     $filters['Osirusoft Open Proxy']['comment'] =
 575         _("FREE - Osirusoft Open Proxy Servers - List of Open Proxy Servers.");
 576
 577     $filters['ORDB']['prefname'] = 'filters_spam_ordb';
 578     $filters['ORDB']['name'] = 'Open Relay Database List';
 579     $filters['ORDB']['link'] = 'http://www.ordb.org/';
 580     $filters['ORDB']['dns'] = 'relays.ordb.org';
 581     $filters['ORDB']['result'] = '127.0.0.2';
 582     $filters['ORDB']['comment'] =
 583         _("FREE - ORDB was born when ORBS went off the air. It seems to have fewer false positives than ORBS did though.");
 584
 585     $filters['FiveTen Direct']['prefname'] = 'filters_spam_fiveten_src';
 586     $filters['FiveTen Direct']['name'] = 'Five-Ten-sg.com Direct SPAM Sources';
 587     $filters['FiveTen Direct']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 588     $filters['FiveTen Direct']['dns'] = 'blackholes.five-ten-sg.com';
 589     $filters['FiveTen Direct']['result'] = '127.0.0.2';
 590     $filters['FiveTen Direct']['comment'] =
 591         _("FREE - Five-Ten-sg.com - Direct SPAM sources.");
 592
 593     $filters['FiveTen DUL']['prefname'] = 'filters_spam_fiveten_dul';
 594     $filters['FiveTen DUL']['name'] = 'Five-Ten-sg.com DUL Lists';
 595     $filters['FiveTen DUL']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 596     $filters['FiveTen DUL']['dns'] = 'blackholes.five-ten-sg.com';
 597     $filters['FiveTen DUL']['result'] = '127.0.0.3';
 598     $filters['FiveTen DUL']['comment'] =
 599         _("FREE - Five-Ten-sg.com - Dial-up lists - includes some DSL IPs.");
 600
 601     $filters['FiveTen Unc. OptIn']['prefname'] = 'filters_spam_fiveten_oi';
 602     $filters['FiveTen Unc. OptIn']['name'] = 'Five-Ten-sg.com Unconfirmed OptIn Lists';
 603     $filters['FiveTen Unc. OptIn']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 604     $filters['FiveTen Unc. OptIn']['dns'] = 'blackholes.five-ten-sg.com';
 605     $filters['FiveTen Unc. OptIn']['result'] = '127.0.0.4';
 606     $filters['FiveTen Unc. OptIn']['comment'] =
 607         _("FREE - Five-Ten-sg.com - Bulk mailers that do not use confirmed opt-in.");
 608
 609     $filters['FiveTen Others']['prefname'] = 'filters_spam_fiveten_oth';
 610     $filters['FiveTen Others']['name'] = 'Five-Ten-sg.com Other Misc. Servers';
 611     $filters['FiveTen Others']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 612     $filters['FiveTen Others']['dns'] = 'blackholes.five-ten-sg.com';
 613     $filters['FiveTen Others']['result'] = '127.0.0.5';
 614     $filters['FiveTen Others']['comment'] =
 615         _("FREE - Five-Ten-sg.com - Other misc. servers.");
 616
 617     $filters['FiveTen Single Stage']['prefname'] = 'filters_spam_fiveten_ss';
 618     $filters['FiveTen Single Stage']['name'] = 'Five-Ten-sg.com Single Stage Servers';
 619     $filters['FiveTen Single Stage']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 620     $filters['FiveTen Single Stage']['dns'] = 'blackholes.five-ten-sg.com';
 621     $filters['FiveTen Single Stage']['result'] = '127.0.0.6';
 622     $filters['FiveTen Single Stage']['comment'] =
 623         _("FREE - Five-Ten-sg.com - Single Stage servers.");
 624
 625     $filters['FiveTen SPAM Support']['prefname'] = 'filters_spam_fiveten_supp';
 626     $filters['FiveTen SPAM Support']['name'] = 'Five-Ten-sg.com SPAM Support Servers';
 627     $filters['FiveTen SPAM Support']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 628     $filters['FiveTen SPAM Support']['dns'] = 'blackholes.five-ten-sg.com';
 629     $filters['FiveTen SPAM Support']['result'] = '127.0.0.7';
 630     $filters['FiveTen SPAM Support']['comment'] =
 631         _("FREE - Five-Ten-sg.com - SPAM Support servers.");
 632
 633     $filters['FiveTen Web forms']['prefname'] = 'filters_spam_fiveten_wf';
 634     $filters['FiveTen Web forms']['name'] = 'Five-Ten-sg.com Web Form IPs';
 635     $filters['FiveTen Web forms']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 636     $filters['FiveTen Web forms']['dns'] = 'blackholes.five-ten-sg.com';
 637     $filters['FiveTen Web forms']['result'] = '127.0.0.8';
 638     $filters['FiveTen Web forms']['comment'] =
 639         _("FREE - Five-Ten-sg.com - Web Form IPs.");
 640
 641     $filters['Dorkslayers']['prefname'] = 'filters_spam_dorks';
 642     $filters['Dorkslayers']['name'] = 'Dorkslayers Lists';
 643     $filters['Dorkslayers']['link'] = 'http://www.dorkslayers.com';
 644     $filters['Dorkslayers']['dns'] = 'orbs.dorkslayers.com';
 645     $filters['Dorkslayers']['result'] = '127.0.0.2';
 646     $filters['Dorkslayers']['comment'] =
 647         _("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.");
 648
 649     $filters['SPAMhaus']['prefname'] = 'filters_spam_spamhaus';
 650     $filters['SPAMhaus']['name'] = 'SPAMhaus Lists';
 651     $filters['SPAMhaus']['link'] = 'http://www.spamhaus.org';
 652     $filters['SPAMhaus']['dns'] = 'sbl.spamhaus.org';
 653     $filters['SPAMhaus']['result'] = '127.0.0.6';
 654     $filters['SPAMhaus']['comment'] =
 655         _("FREE - SPAMhaus - A list of well-known SPAM sources.");
 656
 657     $filters['SPAMcop']['prefname'] = 'filters_spam_spamcop';
 658     $filters['SPAMcop']['name'] = 'SPAM Cop Lists';
 659     $filters['SPAMcop']['link'] = 'http://spamcop.net/bl.shtml';
 660     $filters['SPAMcop']['dns'] = 'bl.spamcop.net';
 661     $filters['SPAMcop']['result'] = '127.0.0.2';
 662     $filters['SPAMcop']['comment'] =
 663         _("FREE, for now - SPAMCOP - An interesting solution that lists servers that have a very high spam to legit email ratio (85% or more).");
 664
 665     $filters['dev.null.dk']['prefname'] = 'filters_spam_devnull';
 666     $filters['dev.null.dk']['name'] = 'dev.null.dk Lists';
 667     $filters['dev.null.dk']['link'] = 'http://dev.null.dk/';
 668     $filters['dev.null.dk']['dns'] = 'dev.null.dk';
 669     $filters['dev.null.dk']['result'] = '127.0.0.2';
 670     $filters['dev.null.dk']['comment'] =
 671         _("FREE - dev.null.dk - I don't have any detailed info on this list.");
 672
 673     $filters['visi.com']['prefname'] = 'filters_spam_visi';
 674     $filters['visi.com']['name'] = 'visi.com Relay Stop List';
 675     $filters['visi.com']['link'] = 'http://relays.visi.com';
 676     $filters['visi.com']['dns'] = 'relays.visi.com';
 677     $filters['visi.com']['result'] = '127.0.0.2';
 678     $filters['visi.com']['comment'] =
 679         _("FREE - visi.com - Relay Stop List. Very conservative OpenRelay List.");
 680
 681     $filters['2mbit.com Open Relays']['prefname'] = 'filters_spam_2mb_or';
 682     $filters['2mbit.com Open Relays']['name'] = '2mbit.com Open Relays List';
 683     $filters['2mbit.com Open Relays']['link'] = 'http://www.2mbit.com/sbl.php';
 684     $filters['2mbit.com Open Relays']['dns'] = 'blackholes.2mbit.com';
 685     $filters['2mbit.com Open Relays']['result'] = '127.0.0.2';
 686     $filters['2mbit.com Open Relays']['comment'] =
 687         _("FREE - 2mbit.com Open Relays - Another list of Open Relays.");
 688
 689     $filters['2mbit.com SPAM Source']['prefname'] = 'filters_spam_2mb_ss';
 690     $filters['2mbit.com SPAM Source']['name'] = '2mbit.com SPAM Source List';
 691     $filters['2mbit.com SPAM Source']['link'] = 'http://www.2mbit.com/sbl.php';
 692     $filters['2mbit.com SPAM Source']['dns'] = 'blackholes.2mbit.com';
 693     $filters['2mbit.com SPAM Source']['result'] = '127.0.0.4';
 694     $filters['2mbit.com SPAM Source']['comment'] =
 695         _("FREE - 2mbit.com SPAM Source - List of Direct SPAM Sources.");
 696
 697     $filters['2mbit.com SPAM ISPs']['prefname'] = 'filters_spam_2mb_isp';
 698     $filters['2mbit.com SPAM ISPs']['name'] = '2mbit.com SPAM-friendly ISP List';
 699     $filters['2mbit.com SPAM ISPs']['link'] = 'http://www.2mbit.com/sbl.php';
 700     $filters['2mbit.com SPAM ISPs']['dns'] = 'blackholes.2mbit.com';
 701     $filters['2mbit.com SPAM ISPs']['result'] = '127.0.0.10';
 702     $filters['2mbit.com SPAM ISPs']['comment'] =
 703         _("FREE - 2mbit.com SPAM ISPs - List of SPAM-friendly ISPs.");
 704
 705     $filters['Leadmon DUL']['prefname'] = 'filters_spam_lm_dul';
 706     $filters['Leadmon DUL']['name'] = 'Leadmon.net DUL List';
 707     $filters['Leadmon DUL']['link'] = 'http://www.leadmon.net/spamguard/';
 708     $filters['Leadmon DUL']['dns'] = 'spamguard.leadmon.net';
 709     $filters['Leadmon DUL']['result'] = '127.0.0.2';
 710     $filters['Leadmon DUL']['comment'] =
 711         _("FREE - Leadmon DUL - Another list of Dial-up or otherwise dynamically assigned IPs.");
 712
 713     $filters['Leadmon SPAM Source']['prefname'] = 'filters_spam_lm_ss';
 714     $filters['Leadmon SPAM Source']['name'] = 'Leadmon.net SPAM Source List';
 715     $filters['Leadmon SPAM Source']['link'] = 'http://www.leadmon.net/spamguard/';
 716     $filters['Leadmon SPAM Source']['dns'] = 'spamguard.leadmon.net';
 717     $filters['Leadmon SPAM Source']['result'] = '127.0.0.3';
 718     $filters['Leadmon SPAM Source']['comment'] =
 719         _("FREE - Leadmon SPAM Source - List of IPs Leadmon.net has received SPAM directly from.");
 720
 721     $filters['Leadmon Bulk Mailers']['prefname'] = 'filters_spam_lm_bm';
 722     $filters['Leadmon Bulk Mailers']['name'] = 'Leadmon.net Bulk Mailers List';
 723     $filters['Leadmon Bulk Mailers']['link'] = 'http://www.leadmon.net/spamguard/';
 724     $filters['Leadmon Bulk Mailers']['dns'] = 'spamguard.leadmon.net';
 725     $filters['Leadmon Bulk Mailers']['result'] = '127.0.0.4';
 726     $filters['Leadmon Bulk Mailers']['comment'] =
 727         _("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.");
 728
 729     $filters['Leadmon Open Relays']['prefname'] = 'filters_spam_lm_or';
 730     $filters['Leadmon Open Relays']['name'] = 'Leadmon.net Open Relays List';
 731     $filters['Leadmon Open Relays']['link'] = 'http://www.leadmon.net/spamguard/';
 732     $filters['Leadmon Open Relays']['dns'] = 'spamguard.leadmon.net';
 733     $filters['Leadmon Open Relays']['result'] = '127.0.0.5';
 734     $filters['Leadmon Open Relays']['comment'] =
 735         _("FREE - Leadmon Open Relays - Single Stage Open Relays that are not listed on other active RBLs.");
 736
 737     $filters['Leadmon Multi-stage']['prefname'] = 'filters_spam_lm_ms';
 738     $filters['Leadmon Multi-stage']['name'] = 'Leadmon.net Multi-Stage Relay List';
 739     $filters['Leadmon Multi-stage']['link'] = 'http://www.leadmon.net/spamguard/';
 740     $filters['Leadmon Multi-stage']['dns'] = 'spamguard.leadmon.net';
 741     $filters['Leadmon Multi-stage']['result'] = '127.0.0.6';
 742     $filters['Leadmon Multi-stage']['comment'] =
 743         _("FREE - Leadmon Multi-stage - Multi-Stage Open Relays that are not listed on other active RBLs and that have sent SPAM to Leadmon.net.");
 744
 745     $filters['Leadmon SpamBlock']['prefname'] = 'filters_spam_lm_sb';
 746     $filters['Leadmon SpamBlock']['name'] = 'Leadmon.net SpamBlock Sites List';
 747     $filters['Leadmon SpamBlock']['link'] = 'http://www.leadmon.net/spamguard/';
 748     $filters['Leadmon SpamBlock']['dns'] = 'spamguard.leadmon.net';
 749     $filters['Leadmon SpamBlock']['result'] = '127.0.0.7';
 750     $filters['Leadmon SpamBlock']['comment'] =
 751         _("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.");
 752
 753     $filters['NJABL Open Relays']['prefname'] = 'filters_spam_njabl_or';
 754     $filters['NJABL Open Relays']['name'] = 'NJABL Open Relay/Direct Spam Source List';
 755     $filters['NJABL Open Relays']['link'] = 'http://www.njabl.org/';
 756     $filters['NJABL Open Relays']['dns'] = 'dnsbl.njabl.org';
 757     $filters['NJABL Open Relays']['result'] = '127.0.0.2';
 758     $filters['NJABL Open Relays']['comment'] =
 759         _("FREE, for now - Not Just Another Blacklist - Both Open Relays and Direct SPAM Sources.");
 760
 761     $filters['NJABL DUL']['prefname'] = 'filters_spam_njabl_dul';
 762     $filters['NJABL DUL']['name'] = 'NJABL Dial-ups List';
 763     $filters['NJABL DUL']['link'] = 'http://www.njabl.org/';
 764     $filters['NJABL DUL']['dns'] = 'dnsbl.njabl.org';
 765     $filters['NJABL DUL']['result'] = '127.0.0.3';
 766     $filters['NJABL DUL']['comment'] =
 767         _("FREE, for now - Not Just Another Blacklist - Dial-up IPs.");
 768
 769     $filters['Conf DSBL.ORG Relay']['prefname'] = 'filters_spam_dsbl_conf_ss';
 770     $filters['Conf DSBL.ORG Relay']['name'] = 'DSBL.org Confirmed Relay List';
 771     $filters['Conf DSBL.ORG Relay']['link'] = 'http://www.dsbl.org/';
 772     $filters['Conf DSBL.ORG Relay']['dns'] = 'list.dsbl.org';
 773     $filters['Conf DSBL.ORG Relay']['result'] = '127.0.0.2';
 774     $filters['Conf DSBL.ORG Relay']['comment'] =
 775         _("FREE - Distributed Sender Boycott List - Confirmed Relays");
 776
 777     $filters['Conf DSBL.ORG Multi-Stage']['prefname'] = 'filters_spam_dsbl_conf_ms';
 778     $filters['Conf DSBL.ORG Multi-Stage']['name'] = 'DSBL.org Confirmed Multi-Stage Relay List';
 779     $filters['Conf DSBL.ORG Multi-Stage']['link'] = 'http://www.dsbl.org/';
 780     $filters['Conf DSBL.ORG Multi-Stage']['dns'] = 'multihop.dsbl.org';
 781     $filters['Conf DSBL.ORG Multi-Stage']['result'] = '127.0.0.2';
 782     $filters['Conf DSBL.ORG Multi-Stage']['comment'] =
 783         _("FREE - Distributed Sender Boycott List - Confirmed Multi-stage Relays");
 784
 785     $filters['UN-Conf DSBL.ORG']['prefname'] = 'filters_spam_dsbl_unc';
 786     $filters['UN-Conf DSBL.ORG']['name'] = 'DSBL.org UN-Confirmed Relay List';
 787     $filters['UN-Conf DSBL.ORG']['link'] = 'http://www.dsbl.org/';
 788     $filters['UN-Conf DSBL.ORG']['dns'] = 'unconfirmed.dsbl.org';
 789     $filters['UN-Conf DSBL.ORG']['result'] = '127.0.0.2';
 790     $filters['UN-Conf DSBL.ORG']['comment'] =
 791         _("FREE - Distributed Sender Boycott List - UN-Confirmed Relays");
 792
 793     foreach ($filters as $Key => $Value) {
 794         $filters[$Key]['enabled'] = getPref($data_dir, $username,
 795             $filters[$Key]['prefname']);
 796     }
 797
 798     return $filters;
 799 }
 800
 801 function remove_filter ($id) {
 802     global $data_dir, $username;
 803
 804     while ($nextFilter = getPref($data_dir, $username, 'filter' .
 805         ($id + 1))) {
 806         setPref($data_dir, $username, 'filter' . $id, $nextFilter);
 807         $id ++;
 808     }
 809
 810     removePref($data_dir, $username, 'filter' . $id);
 811 }
 812
 813 function filter_swap($id1, $id2) {
 814     global $data_dir, $username;
 815
 816     $FirstFilter = getPref($data_dir, $username, 'filter' . $id1);
 817     $SecondFilter = getPref($data_dir, $username, 'filter' . $id2);
 818
 819     if ($FirstFilter && $SecondFilter) {
 820         setPref($data_dir, $username, 'filter' . $id2, $FirstFilter);
 821         setPref($data_dir, $username, 'filter' . $id1, $SecondFilter);
 822     }
 823 }
 824
 825 /* This update the filter rules when
 826    renaming or deleting folders */
 827 function update_for_folder ($args) {
 828     $old_folder = $args[0];
 829         $new_folder = $args[2];
 830         $action = $args[1];
 831     global $plugins, $data_dir, $username;
 832     $filters = array();
 833     $filters = load_filters();
 834     $filter_count = count($filters);
 835     $p = 0;
 836     for ($i=0;$i<$filter_count;$i++) {
 837         if (!empty($filters)) {
 838             if ($old_folder == $filters[$i]['folder']) {
 839                 if ($action == 'rename') {
 840                     $filters[$i]['folder'] = $new_folder;
 841                     setPref($data_dir, $username, 'filter'.$i,
 842                     $filters[$i]['where'].','.$filters[$i]['what'].','.$new_folder);
 843                 }
 844                 elseif ($action == 'delete') {
 845                     remove_filter($p);
 846                     $p = $p-1;
 847                 }
 848             }
 849         $p++;
 850         }
 851     }
 852 }
 853 ?>