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 function filters_SaveCache () {
  29     global $data_dir, $SpamFilters_DNScache;
  30
  31     if (file_exists($data_dir . "/dnscache")) {
  32         $fp = fopen($data_dir . "/dnscache", "r");
  33     } else {
  34         $fp = false;
  35     }
  36     if ($fp) {
  37         flock($fp,LOCK_EX);
  38     } else {
  39        $fp = fopen($data_dir . "/dnscache", "w+");
  40        fclose($fp);
  41        $fp = fopen($data_dir . "/dnscache", "r");
  42        flock($fp,LOCK_EX);
  43     }
  44     $fp1=fopen($data_dir . "/dnscache", "w+");
  45
  46     foreach ($SpamFilters_DNScache as $Key=> $Value) {
  47        $tstr = $Key . ',' . $Value['L'] . ',' . $Value['T'] . "\n";
  48        fputs ($fp1, $tstr);
  49     }
  50     fclose($fp1);
  51     flock($fp,LOCK_UN);
  52     fclose($fp);
  53 }
  54
  55
  56 function filters_LoadCache () {
  57     global $data_dir, $SpamFilters_DNScache;
  58
  59     if (file_exists($data_dir . "/dnscache")) {
  60         $SpamFilters_DNScache = array();
  61         if ($fp = fopen ($data_dir . "/dnscache", "r")) {
  62             flock($fp,LOCK_SH);
  63             while ($data=fgetcsv($fp,1024)) {
  64                if ($data[2] > time()) {
  65                   $SpamFilters_DNScache[$data[0]]['L'] = $data[1];
  66                   $SpamFilters_DNScache[$data[0]]['T'] = $data[2];
  67                }
  68             }
  69
  70             flock($fp,LOCK_UN);
  71         }
  72     }
  73 }
  74
  75 function filters_bulkquery($filters_spam_scan, $filters, $read) {
  76     global $SpamFilters_YourHop, $attachment_dir, $username,
  77            $SpamFilters_DNScache, $SpamFilters_BulkQuery,
  78            $SpamFilters_CacheTTL;
  79
  80     $IPs = array();
  81     $i = 0;
  82     while ($i < count($read)) {
  83         // EIMS will give funky results
  84         $Chunks = explode(' ', $read[$i]);
  85         if ($Chunks[0] != '*') {
  86             $i ++;
  87             continue;
  88         }
  89         $MsgNum = $Chunks[1];
  90
  91         $i ++;
  92         $Scan = 1;
  93
  94         // Check for normal IMAP servers
  95         if ($filters_spam_scan == 'new') {
  96             if (is_int(strpos($Chunks[4], '\Seen'))) {
  97                 $Scan = 0;
  98             }
  99         }
 100
 101         // Look through all of the Received headers for IP addresses
 102         // Stop when I get ")" on a line
 103         // Stop if I get "*" on a line (don't advance)
 104         // and above all, stop if $i is bigger than the total # of lines
 105         while (($i < count($read)) &&
 106                 ($read[$i][0] != ')' && $read[$i][0] != '*' &&
 107                 $read[$i][0] != "\n")) {
 108             // Check to see if this line is the right "Received from" line
 109             // to check
 110             if (is_int(strpos($read[$i], $SpamFilters_YourHop))) {
 111
 112                 // short-circuit and skip work if we don't scan this one
 113                 if ($Scan) {
 114                     $read[$i] = ereg_replace('[^0-9\.]', ' ', $read[$i]);
 115                     $elements = explode(' ', $read[$i]);
 116                     foreach ($elements as $value) {
 117                         if ($value != '' &&
 118                             ereg('[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}',
 119                                 $value, $regs)) {
 120                             $Chunks = explode('.', $value);
 121                             $IP = $Chunks[3] . '.' . $Chunks[2] . '.' .
 122                                   $Chunks[1] . '.' . $Chunks[0];
 123                             foreach ($filters as $key => $value) {
 124                                 if ($filters[$key]['enabled'] &&
 125                                           $filters[$key]['dns']) {
 126                                     if (strlen($SpamFilters_DNScache[$IP.'.'.$filters[$key]['dns']]) == 0) {
 127                                        $IPs[$IP] = true;
 128                                        break;
 129                                     }
 130                                 }
 131                             }
 132                             // If we've checked one IP and YourHop is
 133                             // just a space
 134                             if ($SpamFilters_YourHop == ' ') {
 135                                 break;  // don't check any more
 136                             }
 137                         }
 138                     }
 139                 }
 140             }
 141             $i ++;
 142         }
 143     }
 144
 145     if (count($IPs) > 0) {
 146         $rbls = array();
 147         foreach ($filters as $key => $value) {
 148             if ($filters[$key]['enabled']) {
 149                 if ($filters[$key]['dns']) {
 150                     $rbls[$filters[$key]['dns']] = true;
 151                 }
 152             }
 153         }
 154
 155         $bqfil = $attachment_dir . $username . "-bq.in";
 156         $fp = fopen($bqfil, "w");
 157         fputs ($fp, $SpamFilters_CacheTTL . "\n");
 158         foreach ($rbls as $key => $value) {
 159             fputs ($fp, "." . $key . "\n");
 160         }
 161         fputs ($fp, "----------\n");
 162         foreach ($IPs as $key => $value) {
 163             fputs ($fp, $key . "\n");
 164         }
 165         fclose ($fp);
 166         $bqout = array();
 167         exec ($SpamFilters_BulkQuery . " < " . $bqfil, $bqout);
 168         foreach ($bqout as $value) {
 169             $Chunks = explode(',', $value);
 170             $SpamFilters_DNScache[$Chunks[0]]['L'] = $Chunks[1];
 171             $SpamFilters_DNScache[$Chunks[0]]['T'] = $Chunks[2] + time();
 172         }
 173         unlink($bqfil);
 174     }
 175 }
 176
 177
 178 function filters_sqimap_read_data ($imap_stream, $pre, $handle_errors, &$response, &$message) {
 179     global $color, $squirrelmail_language, $imap_general_debug;
 180
 181     $data = array();
 182     $size = 0;
 183
 184     do {
 185         $read = fgets($imap_stream, 9096);
 186         if (ereg("^$pre (OK|BAD|NO)(.*)$", $read, $regs)) {
 187             break;  // found end of reply
 188         }
 189
 190         // Continue if needed for this single line
 191         while (strpos($read, "\n") === false) {
 192             $read .= fgets($imap_stream, 9096);
 193         }
 194
 195         $data[] = $read;
 196
 197         if (ereg("^\\* [0-9]+ FETCH.*\\{([0-9]+)\\}", $read, $regs)) {
 198             $size = $regs[1];
 199             if ($imap_general_debug) {
 200                 echo "<small><tt><font color=\"#CC0000\">Size is $size</font></tt></small><br>\n";
 201             }
 202
 203             $total_size = 0;
 204             do {
 205                 $read = fgets($imap_stream, 9096);
 206                 if ($imap_general_debug) {
 207                     echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
 208                     flush();
 209                 }
 210                 $data[] = $read;
 211                 $total_size += strlen($read);
 212             } while ($total_size < $size);
 213
 214             $size = 0;
 215         }
 216         // For debugging purposes
 217         if ($imap_general_debug) {
 218             echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
 219             flush();
 220         }
 221     } while (true);
 222
 223     $response = $regs[1];
 224     $message = trim($regs[2]);
 225
 226     if ($imap_general_debug) {
 227         echo '--<br>';
 228     }
 229
 230     if (!$handle_errors) {
 231         return $data;
 232     }
 233
 234     if ($response == 'NO') {
 235         // ignore this error from m$ exchange, it is not fatal (aka bug)
 236         if (strstr($message, 'command resulted in') === false) {
 237             set_up_language($squirrelmail_language);
 238             echo "<br><b><font color=$color[2]>\n" .
 239                  _("ERROR : Could not complete request.") .
 240                  "</b><br>\n" .
 241                  _("Reason Given: ") .
 242                  $message . "</font><br>\n";
 243             exit;
 244         }
 245     } else if ($response == 'BAD') {
 246         set_up_language($squirrelmail_language);
 247         echo "<br><b><font color=$color[2]>\n" .
 248              _("ERROR : Bad or malformed request.") .
 249              "</b><br>\n" .
 250              _("Server responded: ") .
 251              $message . "</font><br>\n";
 252         exit;
 253     }
 254
 255     return $data;
 256 }
 257
 258
 259 function start_filters() {
 260     global $mailbox, $username, $key, $imapServerAddress, $imapPort, $imap,
 261         $imap_general, $filters, $imap_stream, $imapConnection,
 262     $UseSeparateImapConnection, $AllowSpamFilters;
 263
 264 #    if ($mailbox == 'INBOX') {
 265         // Detect if we have already connected to IMAP or not.
 266         // Also check if we are forced to use a separate IMAP connection
 267         if ((!isset($imap_stream) && !isset($imapConnection)) ||
 268             $UseSeparateImapConnection) {
 269                 $stream = sqimap_login($username, $key, $imapServerAddress,
 270                                     $imapPort, 10);
 271                 $previously_connected = false;
 272         } elseif (isset($imapConnection)) {
 273             $stream = $imapConnection;
 274             $previously_connected = true;
 275         } else {
 276             $previously_connected = true;
 277             $stream = $imap_stream;
 278         }
 279
 280         if (sqimap_get_num_messages($stream, 'INBOX') > 0) {
 281             // Filter spam from inbox before we sort them into folders
 282             if ($AllowSpamFilters) {
 283                 spam_filters($stream);
 284             }
 285
 286             // Sort into folders
 287             user_filters($stream);
 288         }
 289
 290         if (!$previously_connected) {
 291             sqimap_logout($stream);
 292         }
 293 #    }
 294 }
 295
 296
 297 function user_filters($imap_stream) {
 298     $filters = load_filters();
 299     if (! $filters) return;
 300
 301     sqimap_mailbox_select($imap_stream, 'INBOX');
 302
 303     // For every rule
 304     for ($i=0; $i < count($filters); $i++) {
 305         // If it is the "combo" rule
 306         if ($filters[$i]['where'] == 'To or Cc') {
 307             /*
 308             *  If it's "TO OR CC", we have to do two searches, one for TO
 309             *  and the other for CC.
 310             */
 311             filter_search_and_delete($imap_stream, 'TO',
 312             $filters[$i]['what'], $filters[$i]['folder']);
 313             filter_search_and_delete($imap_stream, 'CC',
 314             $filters[$i]['what'], $filters[$i]['folder']);
 315         } else {
 316             /*
 317             *  If it's a normal TO, CC, SUBJECT, or FROM, then handle it
 318             *  normally.
 319             */
 320             filter_search_and_delete($imap_stream, $filters[$i]['where'],
 321             $filters[$i]['what'], $filters[$i]['folder']);
 322         }
 323     }
 324     // Clean out the mailbox whether or not auto_expunge is on
 325     // That way it looks like it was redirected properly
 326     sqimap_mailbox_expunge($imap_stream, 'INBOX');
 327 }
 328
 329 function filter_search_and_delete($imap, $where, $what, $where_to) {
 330     global $languages, $squirrelmail_language;
 331     if (isset($languages[$squirrelmail_language]['CHARSET']) &&
 332         $languages[$squirrelmail_language]['CHARSET']) {
 333         $search_str = "SEARCH CHARSET "
 334             . strtoupper($languages[$squirrelmail_language]['CHARSET'])
 335             . " ALL ";
 336     } else {
 337         $search_str = "SEARCH CHARSET US-ASCII ALL ";
 338     }
 339     if ($where == "Header") {
 340        $what = explode(':', $what);
 341        $where = trim($where . ' ' . $what[0]);
 342        $what = addslashes(trim($what[1]));
 343     }
 344     $search_str .= $where . ' {' . strlen($what) . "}\r\n" . $what . "\r\n";
 345
 346     fputs ($imap, "a001 $search_str");
 347     $read = filters_sqimap_read_data ($imap, 'a001', true, $response, $message);
 348
 349     // This may have problems with EIMS due to it being goofy
 350
 351     for ($r=0; $r < count($read) &&
 352                 substr($read[$r], 0, 8) != '* SEARCH'; $r++) {}
 353     if ($response == 'OK') {
 354         $ids = explode(' ', $read[$r]);
 355         if (sqimap_mailbox_exists($imap, $where_to)) {
 356             for ($j=2; $j < count($ids); $j++) {
 357                 $id = trim($ids[$j]);
 358                 sqimap_messages_copy ($imap, $id, $id, $where_to);
 359                 sqimap_messages_flag ($imap, $id, $id, 'Deleted');
 360             }
 361         }
 362     }
 363 }
 364
 365 // These are the spam filters
 366 function spam_filters($imap_stream) {
 367     global $data_dir, $username;
 368     global $SpamFilters_YourHop;
 369     global $SpamFilters_DNScache;
 370     global $SpamFilters_SharedCache;
 371     global $SpamFilters_BulkQuery;
 372
 373     $filters_spam_scan = getPref($data_dir, $username, 'filters_spam_scan');
 374     $filters_spam_folder = getPref($data_dir, $username, 'filters_spam_folder');
 375     $filters = load_spam_filters();
 376
 377     if ($SpamFilters_SharedCache) {
 378        filters_LoadCache();
 379     }
 380
 381     $run = 0;
 382
 383     foreach ($filters as $Key=> $Value) {
 384         if ($Value['enabled']) {
 385             $run ++;
 386         }
 387     }
 388
 389     // short-circuit
 390     if ($run == 0) {
 391         return;
 392     }
 393
 394     sqimap_mailbox_select($imap_stream, 'INBOX');
 395
 396     // Ask for a big list of all "Received" headers in the inbox with
 397     // flags for each message.  Kinda big.
 398     fputs($imap_stream, 'A3999 FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
 399         "(RECEIVED)])\r\n");
 400
 401     $read = filters_sqimap_read_data ($imap_stream, 'A3999', true,
 402                                     $response, $message);
 403
 404     if ($response != 'OK') {
 405         return;
 406     }
 407
 408     if (strlen($SpamFilters_BulkQuery) > 0) {
 409        filters_bulkquery($filters_spam_scan, $filters, $read);
 410     }
 411
 412     $i = 0;
 413     while ($i < count($read)) {
 414         // EIMS will give funky results
 415         $Chunks = explode(' ', $read[$i]);
 416         if ($Chunks[0] != '*') {
 417             $i ++;
 418             continue;
 419         }
 420         $MsgNum = $Chunks[1];
 421
 422         $IPs = array();
 423         $i ++;
 424         $IsSpam = 0;
 425         $Scan = 1;
 426
 427         // Check for normal IMAP servers
 428         if ($filters_spam_scan == 'new') {
 429             if (is_int(strpos($Chunks[4], '\Seen'))) {
 430                 $Scan = 0;
 431             }
 432         }
 433
 434         // Look through all of the Received headers for IP addresses
 435         // Stop when I get ")" on a line
 436         // Stop if I get "*" on a line (don't advance)
 437         // and above all, stop if $i is bigger than the total # of lines
 438         while (($i < count($read)) &&
 439                 ($read[$i][0] != ')' && $read[$i][0] != '*' &&
 440                 $read[$i][0] != "\n") && (! $IsSpam)) {
 441             // Check to see if this line is the right "Received from" line
 442             // to check
 443             if (is_int(strpos($read[$i], $SpamFilters_YourHop))) {
 444
 445                 // short-circuit and skip work if we don't scan this one
 446                 if ($Scan) {
 447                     $read[$i] = ereg_replace('[^0-9\.]', ' ', $read[$i]);
 448                     $elements = explode(' ', $read[$i]);
 449                     foreach ($elements as $value) {
 450                         if ($value != '' &&
 451                             ereg('[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}',
 452                                 $value, $regs)) {
 453                             $Chunks = explode('.', $value);
 454                             if (filters_spam_check_site($Chunks[0],
 455                                     $Chunks[1], $Chunks[2], $Chunks[3],
 456                                     $filters)) {
 457                                 $IsSpam ++;
 458                                 break;  // no sense in checking more IPs
 459                             }
 460                             // If we've checked one IP and YourHop is
 461                             // just a space
 462                             if ($SpamFilters_YourHop == ' ') {
 463                                 break;  // don't check any more
 464                             }
 465                         }
 466                     }
 467                 }
 468             }
 469             $i ++;
 470         }
 471
 472         // Lookie!  It's spam!  Yum!
 473         if ($IsSpam) {
 474             if (sqimap_mailbox_exists($imap_stream, $filters_spam_folder)) {
 475                 sqimap_messages_copy ($imap_stream, $MsgNum, $MsgNum,
 476                                     $filters_spam_folder);
 477                 sqimap_messages_flag ($imap_stream, $MsgNum, $MsgNum,
 478                                     'Deleted');
 479             }
 480         } else {
 481         }
 482     }
 483
 484     sqimap_mailbox_expunge($imap_stream, 'INBOX');
 485
 486     if ($SpamFilters_SharedCache) {
 487        filters_SaveCache();
 488     } else {
 489        session_register('SpamFilters_DNScache');
 490     }
 491 }
 492
 493
 494 // Does the loop through each enabled filter for the specified IP address.
 495 // IP format:  $a.$b.$c.$d
 496 function filters_spam_check_site($a, $b, $c, $d, &$filters) {
 497     global $SpamFilters_DNScache, $SpamFilters_CacheTTL;
 498     foreach ($filters as $key => $value) {
 499         if ($filters[$key]['enabled']) {
 500             if ($filters[$key]['dns']) {
 501                 $filter_revip = $d . '.' . $c . '.' . $b . '.' . $a . '.' .
 502                                 $filters[$key]['dns'];
 503                 if (strlen($SpamFilters_DNScache[$filter_revip]['L']) == 0) {
 504                     $SpamFilters_DNScache[$filter_revip]['L'] =
 505                                         gethostbyname($filter_revip);
 506                     $SpamFilters_DNScache[$filter_revip]['T'] =
 507                                            time() + $SpamFilters_CacheTTL;
 508                 }
 509                 if ($SpamFilters_DNScache[$filter_revip]['L'] ==
 510                     $filters[$key]['result']) {
 511                     return 1;
 512                 }
 513             }
 514         }
 515     }
 516     return 0;
 517 }
 518
 519 function load_filters() {
 520     global $data_dir, $username;
 521     $filters = array();
 522     for ($i=0; $fltr = getPref($data_dir, $username, 'filter' . $i); $i++) {
 523         $ary = explode(',', $fltr);
 524         $filters[$i]['where'] = $ary[0];
 525         $filters[$i]['what'] = $ary[1];
 526         $filters[$i]['folder'] = $ary[2];
 527     }
 528     return $filters;
 529 }
 530
 531 function load_spam_filters() {
 532     global $data_dir, $username, $SpamFilters_ShowCommercial;
 533
 534     if ($SpamFilters_ShowCommercial) {
 535         $filters['MAPS RBL']['prefname'] = 'filters_spam_maps_rbl';
 536         $filters['MAPS RBL']['name'] = 'MAPS Realtime Blackhole List';
 537         $filters['MAPS RBL']['link'] = 'http://www.mail-abuse.org/rbl/';
 538         $filters['MAPS RBL']['dns'] = 'blackholes.mail-abuse.org';
 539         $filters['MAPS RBL']['result'] = '127.0.0.2';
 540         $filters['MAPS RBL']['comment'] =
 541             _("COMMERCIAL - This list contains servers that are verified spam senders. It is a pretty reliable list to scan spam from.");
 542
 543         $filters['MAPS RSS']['prefname'] = 'filters_spam_maps_rss';
 544         $filters['MAPS RSS']['name'] = 'MAPS Relay Spam Stopper';
 545         $filters['MAPS RSS']['link'] = 'http://www.mail-abuse.org/rss/';
 546         $filters['MAPS RSS']['dns'] = 'relays.mail-abuse.org';
 547         $filters['MAPS RSS']['result'] = '127.0.0.2';
 548         $filters['MAPS RSS']['comment'] =
 549             _("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.");
 550
 551         $filters['MAPS DUL']['prefname'] = 'filters_spam_maps_dul';
 552         $filters['MAPS DUL']['name'] = 'MAPS Dial-Up List';
 553         $filters['MAPS DUL']['link'] = 'http://www.mail-abuse.org/dul/';
 554         $filters['MAPS DUL']['dns'] = 'dialups.mail-abuse.org';
 555         $filters['MAPS DUL']['result'] = '127.0.0.3';
 556         $filters['MAPS DUL']['comment'] =
 557             _("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.");
 558
 559         $filters['MAPS RBLplus-RBL']['prefname'] = 'filters_spam_maps_rblplus_rbl';
 560         $filters['MAPS RBLplus-RBL']['name'] = 'MAPS RBL+ RBL List';
 561         $filters['MAPS RBLplus-RBL']['link'] = 'http://www.mail-abuse.org/';
 562         $filters['MAPS RBLplus-RBL']['dns'] = 'rbl-plus.mail-abuse.org';
 563         $filters['MAPS RBLplus-RBL']['result'] = '127.0.0.2';
 564         $filters['MAPS RBLplus-RBL']['comment'] =
 565             _("COMMERCIAL - RBL+ Blackhole entries.");
 566
 567         $filters['MAPS RBLplus-RSS']['prefname'] = 'filters_spam_maps_rblplus_rss';
 568         $filters['MAPS RBLplus-RSS']['name'] = 'MAPS RBL+ List RSS entries';
 569         $filters['MAPS RBLplus-RSS']['link'] = 'http://www.mail-abuse.org/';
 570         $filters['MAPS RBLplus-RSS']['dns'] = 'rbl-plus.mail-abuse.org';
 571         $filters['MAPS RBLplus-RSS']['result'] = '127.0.0.2';
 572         $filters['MAPS RBLplus-RSS']['comment'] =
 573             _("COMMERCIAL - RBL+ OpenRelay entries.");
 574
 575         $filters['MAPS RBLplus-DUL']['prefname'] = 'filters_spam_maps_rblplus_dul';
 576         $filters['MAPS RBLplus-DUL']['name'] = 'MAPS RBL+ List DUL entries';
 577         $filters['MAPS RBLplus-DUL']['link'] = 'http://www.mail-abuse.org/';
 578         $filters['MAPS RBLplus-DUL']['dns'] = 'rbl-plus.mail-abuse.org';
 579         $filters['MAPS RBLplus-DUL']['result'] = '127.0.0.3';
 580         $filters['MAPS RBLplus-DUL']['comment'] =
 581             _("COMMERCIAL - RBL+ Dial-up entries.");
 582     }
 583
 584     $filters['Osirusoft Relays']['prefname'] = 'filters_spam_maps_osirusoft_relay';
 585     $filters['Osirusoft Relays']['name'] = 'Osirusoft Relay List';
 586     $filters['Osirusoft Relays']['link'] = 'http://relays.osirusoft.com/';
 587     $filters['Osirusoft Relays']['dns'] = 'relays.osirusoft.com';
 588     $filters['Osirusoft Relays']['result'] = '127.0.0.2';
 589     $filters['Osirusoft Relays']['comment'] =
 590         _("FREE - Osirusoft Relays - Osirusofts list of verified open relays. Seems to include servers used by abuse@uunet.net auto-replies too.");
 591
 592     $filters['Osirusoft DUL']['prefname'] = 'filters_spam_maps_osirusoft_dul';
 593     $filters['Osirusoft DUL']['name'] = 'Osirusoft Dialup List';
 594     $filters['Osirusoft DUL']['link'] = 'http://relays.osirusoft.com/';
 595     $filters['Osirusoft DUL']['dns'] = 'relays.osirusoft.com';
 596     $filters['Osirusoft DUL']['result'] = '127.0.0.3';
 597     $filters['Osirusoft DUL']['comment'] =
 598         _("FREE - Osirusoft Dialups - Osirusofts Dialup Spam Source list.");
 599
 600     $filters['Osirusoft Spam Source']['prefname'] = 'filters_spam_maps_osirusoft_rc';
 601     $filters['Osirusoft Spam Source']['name'] = 'Osirusoft Confirmed Spam Source List';
 602     $filters['Osirusoft Spam Source']['link'] = 'http://relays.osirusoft.com/';
 603     $filters['Osirusoft Spam Source']['dns'] = 'relays.osirusoft.com';
 604     $filters['Osirusoft Spam Source']['result'] = '127.0.0.4';
 605     $filters['Osirusoft Spam Source']['comment'] =
 606         _("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.");
 607
 608     $filters['Osirusoft Smart Host']['prefname'] = 'filters_spam_maps_osirusoft_sh';
 609     $filters['Osirusoft Smart Host']['name'] = 'Osirusoft Smart Host List';
 610     $filters['Osirusoft Smart Host']['link'] = 'http://relays.osirusoft.com/';
 611     $filters['Osirusoft Smart Host']['dns'] = 'relays.osirusoft.com';
 612     $filters['Osirusoft Smart Host']['result'] = '127.0.0.5';
 613     $filters['Osirusoft Smart Host']['comment'] =
 614         _("FREE - Osirusoft Smart Hosts - List of hosts that are secure but relay for other mail servers that are not secure.");
 615
 616     $filters['Osirusoft SPAMware']['prefname'] = 'filters_spam_maps_osirusoft_ss';
 617     $filters['Osirusoft SPAMware']['name'] = 'Osirusoft Spamware Developers List';
 618     $filters['Osirusoft SPAMware']['link'] = 'http://relays.osirusoft.com/';
 619     $filters['Osirusoft SPAMware']['dns'] = 'relays.osirusoft.com';
 620     $filters['Osirusoft SPAMware']['result'] = '127.0.0.6';
 621     $filters['Osirusoft SPAMware']['comment'] =
 622         _("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.");
 623
 624     $filters['Osirusoft Unc. OptIn']['prefname'] = 'filters_spam_maps_osirusoft_sl';
 625     $filters['Osirusoft Unc. OptIn']['name'] = 'Osirusoft Unconfirmed OptIn Server List';
 626     $filters['Osirusoft Unc. OptIn']['link'] = 'http://relays.osirusoft.com/';
 627     $filters['Osirusoft Unc. OptIn']['dns'] = 'relays.osirusoft.com';
 628     $filters['Osirusoft Unc. OptIn']['result'] = '127.0.0.7';
 629     $filters['Osirusoft Unc. OptIn']['comment'] =
 630         _("FREE - Osirusoft Unconfirmed OptIn Servers - List of listservers that opt users in without confirmation.");
 631
 632     $filters['Osirusoft Insecure Formmail']['prefname'] = 'filters_spam_maps_osirusoft_fm';
 633     $filters['Osirusoft Insecure Formmail']['name'] = 'Osirusoft Insecure formmail.cvi Script List';
 634     $filters['Osirusoft Insecure Formmail']['link'] = 'http://relays.osirusoft.com/';
 635     $filters['Osirusoft Insecure Formmail']['dns'] = 'relays.osirusoft.com';
 636     $filters['Osirusoft Insecure Formmail']['result'] = '127.0.0.8';
 637     $filters['Osirusoft Insecure Formmail']['comment'] =
 638         _("FREE - Osirusoft Insecure formmail.cgi scripts - List of insecure formmail.cgi scripts. (planned).");
 639
 640     $filters['Osirusoft Open Proxy']['prefname'] = 'filters_spam_maps_osirusoft_op';
 641     $filters['Osirusoft Open Proxy']['name'] = 'Osirusoft Open Proxy Server List';
 642     $filters['Osirusoft Open Proxy']['link'] = 'http://relays.osirusoft.com/';
 643     $filters['Osirusoft Open Proxy']['dns'] = 'relays.osirusoft.com';
 644     $filters['Osirusoft Open Proxy']['result'] = '127.0.0.9';
 645     $filters['Osirusoft Open Proxy']['comment'] =
 646         _("FREE - Osirusoft Open Proxy Servers - List of Open Proxy Servers.");
 647
 648     $filters['ORDB']['prefname'] = 'filters_spam_ordb';
 649     $filters['ORDB']['name'] = 'Open Relay Database List';
 650     $filters['ORDB']['link'] = 'http://www.ordb.org/';
 651     $filters['ORDB']['dns'] = 'relays.ordb.org';
 652     $filters['ORDB']['result'] = '127.0.0.2';
 653     $filters['ORDB']['comment'] =
 654         _("FREE - ORDB was born when ORBS went off the air. It seems to have fewer false positives than ORBS did though.");
 655
 656     $filters['FiveTen Direct']['prefname'] = 'filters_spam_fiveten_src';
 657     $filters['FiveTen Direct']['name'] = 'Five-Ten-sg.com Direct SPAM Sources';
 658     $filters['FiveTen Direct']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 659     $filters['FiveTen Direct']['dns'] = 'blackholes.five-ten-sg.com';
 660     $filters['FiveTen Direct']['result'] = '127.0.0.2';
 661     $filters['FiveTen Direct']['comment'] =
 662         _("FREE - Five-Ten-sg.com - Direct SPAM sources.");
 663
 664     $filters['FiveTen DUL']['prefname'] = 'filters_spam_fiveten_dul';
 665     $filters['FiveTen DUL']['name'] = 'Five-Ten-sg.com DUL Lists';
 666     $filters['FiveTen DUL']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 667     $filters['FiveTen DUL']['dns'] = 'blackholes.five-ten-sg.com';
 668     $filters['FiveTen DUL']['result'] = '127.0.0.3';
 669     $filters['FiveTen DUL']['comment'] =
 670         _("FREE - Five-Ten-sg.com - Dial-up lists - includes some DSL IPs.");
 671
 672     $filters['FiveTen Unc. OptIn']['prefname'] = 'filters_spam_fiveten_oi';
 673     $filters['FiveTen Unc. OptIn']['name'] = 'Five-Ten-sg.com Unconfirmed OptIn Lists';
 674     $filters['FiveTen Unc. OptIn']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 675     $filters['FiveTen Unc. OptIn']['dns'] = 'blackholes.five-ten-sg.com';
 676     $filters['FiveTen Unc. OptIn']['result'] = '127.0.0.4';
 677     $filters['FiveTen Unc. OptIn']['comment'] =
 678         _("FREE - Five-Ten-sg.com - Bulk mailers that do not use confirmed opt-in.");
 679
 680     $filters['FiveTen Others']['prefname'] = 'filters_spam_fiveten_oth';
 681     $filters['FiveTen Others']['name'] = 'Five-Ten-sg.com Other Misc. Servers';
 682     $filters['FiveTen Others']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 683     $filters['FiveTen Others']['dns'] = 'blackholes.five-ten-sg.com';
 684     $filters['FiveTen Others']['result'] = '127.0.0.5';
 685     $filters['FiveTen Others']['comment'] =
 686         _("FREE - Five-Ten-sg.com - Other misc. servers.");
 687
 688     $filters['FiveTen Single Stage']['prefname'] = 'filters_spam_fiveten_ss';
 689     $filters['FiveTen Single Stage']['name'] = 'Five-Ten-sg.com Single Stage Servers';
 690     $filters['FiveTen Single Stage']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 691     $filters['FiveTen Single Stage']['dns'] = 'blackholes.five-ten-sg.com';
 692     $filters['FiveTen Single Stage']['result'] = '127.0.0.6';
 693     $filters['FiveTen Single Stage']['comment'] =
 694         _("FREE - Five-Ten-sg.com - Single Stage servers.");
 695
 696     $filters['FiveTen SPAM Support']['prefname'] = 'filters_spam_fiveten_supp';
 697     $filters['FiveTen SPAM Support']['name'] = 'Five-Ten-sg.com SPAM Support Servers';
 698     $filters['FiveTen SPAM Support']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 699     $filters['FiveTen SPAM Support']['dns'] = 'blackholes.five-ten-sg.com';
 700     $filters['FiveTen SPAM Support']['result'] = '127.0.0.7';
 701     $filters['FiveTen SPAM Support']['comment'] =
 702         _("FREE - Five-Ten-sg.com - SPAM Support servers.");
 703
 704     $filters['FiveTen Web forms']['prefname'] = 'filters_spam_fiveten_wf';
 705     $filters['FiveTen Web forms']['name'] = 'Five-Ten-sg.com Web Form IPs';
 706     $filters['FiveTen Web forms']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 707     $filters['FiveTen Web forms']['dns'] = 'blackholes.five-ten-sg.com';
 708     $filters['FiveTen Web forms']['result'] = '127.0.0.8';
 709     $filters['FiveTen Web forms']['comment'] =
 710         _("FREE - Five-Ten-sg.com - Web Form IPs.");
 711
 712     $filters['Dorkslayers']['prefname'] = 'filters_spam_dorks';
 713     $filters['Dorkslayers']['name'] = 'Dorkslayers Lists';
 714     $filters['Dorkslayers']['link'] = 'http://www.dorkslayers.com';
 715     $filters['Dorkslayers']['dns'] = 'orbs.dorkslayers.com';
 716     $filters['Dorkslayers']['result'] = '127.0.0.2';
 717     $filters['Dorkslayers']['comment'] =
 718         _("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.");
 719
 720     $filters['SPAMhaus']['prefname'] = 'filters_spam_spamhaus';
 721     $filters['SPAMhaus']['name'] = 'SPAMhaus Lists';
 722     $filters['SPAMhaus']['link'] = 'http://www.spamhaus.org';
 723     $filters['SPAMhaus']['dns'] = 'sbl.spamhaus.org';
 724     $filters['SPAMhaus']['result'] = '127.0.0.6';
 725     $filters['SPAMhaus']['comment'] =
 726         _("FREE - SPAMhaus - A list of well-known SPAM sources.");
 727
 728     $filters['SPAMcop']['prefname'] = 'filters_spam_spamcop';
 729     $filters['SPAMcop']['name'] = 'SPAM Cop Lists';
 730     $filters['SPAMcop']['link'] = 'http://spamcop.net/bl.shtml';
 731     $filters['SPAMcop']['dns'] = 'bl.spamcop.net';
 732     $filters['SPAMcop']['result'] = '127.0.0.2';
 733     $filters['SPAMcop']['comment'] =
 734         _("FREE, for now - SPAMCOP - An interesting solution that lists servers that have a very high spam to legit email ratio (85% or more).");
 735
 736     $filters['dev.null.dk']['prefname'] = 'filters_spam_devnull';
 737     $filters['dev.null.dk']['name'] = 'dev.null.dk Lists';
 738     $filters['dev.null.dk']['link'] = 'http://dev.null.dk/';
 739     $filters['dev.null.dk']['dns'] = 'dev.null.dk';
 740     $filters['dev.null.dk']['result'] = '127.0.0.2';
 741     $filters['dev.null.dk']['comment'] =
 742         _("FREE - dev.null.dk - I don't have any detailed info on this list.");
 743
 744     $filters['visi.com']['prefname'] = 'filters_spam_visi';
 745     $filters['visi.com']['name'] = 'visi.com Relay Stop List';
 746     $filters['visi.com']['link'] = 'http://relays.visi.com';
 747     $filters['visi.com']['dns'] = 'relays.visi.com';
 748     $filters['visi.com']['result'] = '127.0.0.2';
 749     $filters['visi.com']['comment'] =
 750         _("FREE - visi.com - Relay Stop List. Very conservative OpenRelay List.");
 751
 752     $filters['2mbit.com Open Relays']['prefname'] = 'filters_spam_2mb_or';
 753     $filters['2mbit.com Open Relays']['name'] = '2mbit.com Open Relays List';
 754     $filters['2mbit.com Open Relays']['link'] = 'http://www.2mbit.com/sbl.php';
 755     $filters['2mbit.com Open Relays']['dns'] = 'blackholes.2mbit.com';
 756     $filters['2mbit.com Open Relays']['result'] = '127.0.0.2';
 757     $filters['2mbit.com Open Relays']['comment'] =
 758         _("FREE - 2mbit.com Open Relays - Another list of Open Relays.");
 759
 760     $filters['2mbit.com SPAM Source']['prefname'] = 'filters_spam_2mb_ss';
 761     $filters['2mbit.com SPAM Source']['name'] = '2mbit.com SPAM Source List';
 762     $filters['2mbit.com SPAM Source']['link'] = 'http://www.2mbit.com/sbl.php';
 763     $filters['2mbit.com SPAM Source']['dns'] = 'blackholes.2mbit.com';
 764     $filters['2mbit.com SPAM Source']['result'] = '127.0.0.4';
 765     $filters['2mbit.com SPAM Source']['comment'] =
 766         _("FREE - 2mbit.com SPAM Source - List of Direct SPAM Sources.");
 767
 768     $filters['2mbit.com SPAM ISPs']['prefname'] = 'filters_spam_2mb_isp';
 769     $filters['2mbit.com SPAM ISPs']['name'] = '2mbit.com SPAM-friendly ISP List';
 770     $filters['2mbit.com SPAM ISPs']['link'] = 'http://www.2mbit.com/sbl.php';
 771     $filters['2mbit.com SPAM ISPs']['dns'] = 'blackholes.2mbit.com';
 772     $filters['2mbit.com SPAM ISPs']['result'] = '127.0.0.10';
 773     $filters['2mbit.com SPAM ISPs']['comment'] =
 774         _("FREE - 2mbit.com SPAM ISPs - List of SPAM-friendly ISPs.");
 775
 776     $filters['Leadmon DUL']['prefname'] = 'filters_spam_lm_dul';
 777     $filters['Leadmon DUL']['name'] = 'Leadmon.net DUL List';
 778     $filters['Leadmon DUL']['link'] = 'http://www.leadmon.net/spamguard/';
 779     $filters['Leadmon DUL']['dns'] = 'spamguard.leadmon.net';
 780     $filters['Leadmon DUL']['result'] = '127.0.0.2';
 781     $filters['Leadmon DUL']['comment'] =
 782         _("FREE - Leadmon DUL - Another list of Dial-up or otherwise dynamically assigned IPs.");
 783
 784     $filters['Leadmon SPAM Source']['prefname'] = 'filters_spam_lm_ss';
 785     $filters['Leadmon SPAM Source']['name'] = 'Leadmon.net SPAM Source List';
 786     $filters['Leadmon SPAM Source']['link'] = 'http://www.leadmon.net/spamguard/';
 787     $filters['Leadmon SPAM Source']['dns'] = 'spamguard.leadmon.net';
 788     $filters['Leadmon SPAM Source']['result'] = '127.0.0.3';
 789     $filters['Leadmon SPAM Source']['comment'] =
 790         _("FREE - Leadmon SPAM Source - List of IPs Leadmon.net has received SPAM directly from.");
 791
 792     $filters['Leadmon Bulk Mailers']['prefname'] = 'filters_spam_lm_bm';
 793     $filters['Leadmon Bulk Mailers']['name'] = 'Leadmon.net Bulk Mailers List';
 794     $filters['Leadmon Bulk Mailers']['link'] = 'http://www.leadmon.net/spamguard/';
 795     $filters['Leadmon Bulk Mailers']['dns'] = 'spamguard.leadmon.net';
 796     $filters['Leadmon Bulk Mailers']['result'] = '127.0.0.4';
 797     $filters['Leadmon Bulk Mailers']['comment'] =
 798         _("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.");
 799
 800     $filters['Leadmon Open Relays']['prefname'] = 'filters_spam_lm_or';
 801     $filters['Leadmon Open Relays']['name'] = 'Leadmon.net Open Relays List';
 802     $filters['Leadmon Open Relays']['link'] = 'http://www.leadmon.net/spamguard/';
 803     $filters['Leadmon Open Relays']['dns'] = 'spamguard.leadmon.net';
 804     $filters['Leadmon Open Relays']['result'] = '127.0.0.5';
 805     $filters['Leadmon Open Relays']['comment'] =
 806         _("FREE - Leadmon Open Relays - Single Stage Open Relays that are not listed on other active RBLs.");
 807
 808     $filters['Leadmon Multi-stage']['prefname'] = 'filters_spam_lm_ms';
 809     $filters['Leadmon Multi-stage']['name'] = 'Leadmon.net Multi-Stage Relay List';
 810     $filters['Leadmon Multi-stage']['link'] = 'http://www.leadmon.net/spamguard/';
 811     $filters['Leadmon Multi-stage']['dns'] = 'spamguard.leadmon.net';
 812     $filters['Leadmon Multi-stage']['result'] = '127.0.0.6';
 813     $filters['Leadmon Multi-stage']['comment'] =
 814         _("FREE - Leadmon Multi-stage - Multi-Stage Open Relays that are not listed on other active RBLs and that have sent SPAM to Leadmon.net.");
 815
 816     $filters['Leadmon SpamBlock']['prefname'] = 'filters_spam_lm_sb';
 817     $filters['Leadmon SpamBlock']['name'] = 'Leadmon.net SpamBlock Sites List';
 818     $filters['Leadmon SpamBlock']['link'] = 'http://www.leadmon.net/spamguard/';
 819     $filters['Leadmon SpamBlock']['dns'] = 'spamguard.leadmon.net';
 820     $filters['Leadmon SpamBlock']['result'] = '127.0.0.7';
 821     $filters['Leadmon SpamBlock']['comment'] =
 822         _("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.");
 823
 824     $filters['NJABL Open Relays']['prefname'] = 'filters_spam_njabl_or';
 825     $filters['NJABL Open Relays']['name'] = 'NJABL Open Relay/Direct Spam Source List';
 826     $filters['NJABL Open Relays']['link'] = 'http://www.njabl.org/';
 827     $filters['NJABL Open Relays']['dns'] = 'dnsbl.njabl.org';
 828     $filters['NJABL Open Relays']['result'] = '127.0.0.2';
 829     $filters['NJABL Open Relays']['comment'] =
 830         _("FREE, for now - Not Just Another Blacklist - Both Open Relays and Direct SPAM Sources.");
 831
 832     $filters['NJABL DUL']['prefname'] = 'filters_spam_njabl_dul';
 833     $filters['NJABL DUL']['name'] = 'NJABL Dial-ups List';
 834     $filters['NJABL DUL']['link'] = 'http://www.njabl.org/';
 835     $filters['NJABL DUL']['dns'] = 'dnsbl.njabl.org';
 836     $filters['NJABL DUL']['result'] = '127.0.0.3';
 837     $filters['NJABL DUL']['comment'] =
 838         _("FREE, for now - Not Just Another Blacklist - Dial-up IPs.");
 839
 840     foreach ($filters as $Key => $Value) {
 841         $filters[$Key]['enabled'] = getPref($data_dir, $username,
 842             $filters[$Key]['prefname']);
 843     }
 844
 845     return $filters;
 846 }
 847
 848 function remove_filter ($id) {
 849     global $data_dir, $username;
 850
 851     while ($nextFilter = getPref($data_dir, $username, 'filter' .
 852         ($id + 1))) {
 853         setPref($data_dir, $username, 'filter' . $id, $nextFilter);
 854         $id ++;
 855     }
 856
 857     removePref($data_dir, $username, 'filter' . $id);
 858 }
 859
 860 function filter_swap($id1, $id2) {
 861     global $data_dir, $username;
 862
 863     $FirstFilter = getPref($data_dir, $username, 'filter' . $id1);
 864     $SecondFilter = getPref($data_dir, $username, 'filter' . $id2);
 865
 866     if ($FirstFilter && $SecondFilter) {
 867         setPref($data_dir, $username, 'filter' . $id2, $FirstFilter);
 868         setPref($data_dir, $username, 'filter' . $id1, $SecondFilter);
 869     }
 870 }
 871
 872 /* This update the filter rules when
 873    renaming or deleting folders */
 874 function update_for_folder ($args) {
 875     $old_folder = $args[0];
 876         $new_folder = $args[2];
 877         $action = $args[1];
 878     global $plugins, $data_dir, $username;
 879     $filters = array();
 880     $filters = load_filters();
 881     $filter_count = count($filters);
 882     $p = 0;
 883     for ($i=0;$i<$filter_count;$i++) {
 884         if (!empty($filters)) {
 885             if ($old_folder == $filters[$i]['folder']) {
 886                 if ($action == 'rename') {
 887                     $filters[$i]['folder'] = $new_folder;
 888                     setPref($data_dir, $username, 'filter'.$i,
 889                     $filters[$i]['where'].','.$filters[$i]['what'].','.$new_folder);
 890                 }
 891                 elseif ($action == 'delete') {
 892                     remove_filter($p);
 893                     $p = $p-1;
 894                 }
 895             }
 896         $p++;
 897         }
 898     }
 899 }
 900 ?>