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
  93         // Look through all of the Received headers for IP addresses
  94         // Stop when I get ")" on a line
  95         // Stop if I get "*" on a line (don't advance)
  96         // and above all, stop if $i is bigger than the total # of lines
  97         while (($i < count($read)) &&
  98                 ($read[$i][0] != ')' && $read[$i][0] != '*' &&
  99                 $read[$i][0] != "\n")) {
 100             // Check to see if this line is the right "Received from" line
 101             // to check
 102             if (is_int(strpos($read[$i], $SpamFilters_YourHop))) {
 103                 $read[$i] = ereg_replace('[^0-9\.]', ' ', $read[$i]);
 104                 $elements = explode(' ', $read[$i]);
 105                 foreach ($elements as $value) {
 106                     if ($value != '' &&
 107                         ereg('[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}',
 108                             $value, $regs)) {
 109                         $Chunks = explode('.', $value);
 110                         $IP = $Chunks[3] . '.' . $Chunks[2] . '.' .
 111                               $Chunks[1] . '.' . $Chunks[0];
 112                         foreach ($filters as $key => $value) {
 113                             if ($filters[$key]['enabled'] &&
 114                                       $filters[$key]['dns']) {
 115                                 if (strlen($SpamFilters_DNScache[$IP.'.'.$filters[$key]['dns']]) == 0) {
 116                                    $IPs[$IP] = true;
 117                                    break;
 118                                 }
 119                             }
 120                         }
 121                         // If we've checked one IP and YourHop is
 122                         // just a space
 123                         if ($SpamFilters_YourHop == ' ') {
 124                             break;  // don't check any more
 125                         }
 126                     }
 127                 }
 128             }
 129             $i ++;
 130         }
 131     }
 132
 133     if (count($IPs) > 0) {
 134         $rbls = array();
 135         foreach ($filters as $key => $value) {
 136             if ($filters[$key]['enabled']) {
 137                 if ($filters[$key]['dns']) {
 138                     $rbls[$filters[$key]['dns']] = true;
 139                 }
 140             }
 141         }
 142
 143         $bqfil = $attachment_dir . $username . "-bq.in";
 144         $fp = fopen($bqfil, "w");
 145         fputs ($fp, $SpamFilters_CacheTTL . "\n");
 146         foreach ($rbls as $key => $value) {
 147             fputs ($fp, "." . $key . "\n");
 148         }
 149         fputs ($fp, "----------\n");
 150         foreach ($IPs as $key => $value) {
 151             fputs ($fp, $key . "\n");
 152         }
 153         fclose ($fp);
 154         $bqout = array();
 155         exec ($SpamFilters_BulkQuery . " < " . $bqfil, $bqout);
 156         foreach ($bqout as $value) {
 157             $Chunks = explode(',', $value);
 158             $SpamFilters_DNScache[$Chunks[0]]['L'] = $Chunks[1];
 159             $SpamFilters_DNScache[$Chunks[0]]['T'] = $Chunks[2] + time();
 160         }
 161         unlink($bqfil);
 162     }
 163 }
 164
 165
 166 function filters_sqimap_read_data ($imap_stream, $pre, $handle_errors, &$response, &$message) {
 167     global $color, $squirrelmail_language, $imap_general_debug;
 168
 169     $data = array();
 170     $size = 0;
 171
 172     do {
 173         $read = fgets($imap_stream, 9096);
 174         if (ereg("^$pre (OK|BAD|NO)(.*)$", $read, $regs)) {
 175             break;  // found end of reply
 176         }
 177
 178         // Continue if needed for this single line
 179         while (strpos($read, "\n") === false) {
 180             $read .= fgets($imap_stream, 9096);
 181         }
 182
 183         $data[] = $read;
 184
 185         if (ereg("^\\* [0-9]+ FETCH.*\\{([0-9]+)\\}", $read, $regs)) {
 186             $size = $regs[1];
 187             if ($imap_general_debug) {
 188                 echo "<small><tt><font color=\"#CC0000\">Size is $size</font></tt></small><br>\n";
 189             }
 190
 191             $total_size = 0;
 192             do {
 193                 $read = fgets($imap_stream, 9096);
 194                 if ($imap_general_debug) {
 195                     echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
 196                     flush();
 197                 }
 198                 $data[] = $read;
 199                 $total_size += strlen($read);
 200             } while ($total_size < $size);
 201
 202             $size = 0;
 203         }
 204         // For debugging purposes
 205         if ($imap_general_debug) {
 206             echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
 207             flush();
 208         }
 209     } while (true);
 210
 211     $response = $regs[1];
 212     $message = trim($regs[2]);
 213
 214     if ($imap_general_debug) {
 215         echo '--<br>';
 216     }
 217
 218     if (!$handle_errors) {
 219         return $data;
 220     }
 221
 222     if ($response == 'NO') {
 223         // ignore this error from m$ exchange, it is not fatal (aka bug)
 224         if (strstr($message, 'command resulted in') === false) {
 225             set_up_language($squirrelmail_language);
 226             echo "<br><b><font color=$color[2]>\n" .
 227                  _("ERROR : Could not complete request.") .
 228                  "</b><br>\n" .
 229                  _("Reason Given: ") .
 230                  $message . "</font><br>\n";
 231             exit;
 232         }
 233     } else if ($response == 'BAD') {
 234         set_up_language($squirrelmail_language);
 235         echo "<br><b><font color=$color[2]>\n" .
 236              _("ERROR : Bad or malformed request.") .
 237              "</b><br>\n" .
 238              _("Server responded: ") .
 239              $message . "</font><br>\n";
 240         exit;
 241     }
 242
 243     return $data;
 244 }
 245
 246
 247 function start_filters() {
 248     global $mailbox, $username, $key, $imapServerAddress, $imapPort, $imap,
 249         $imap_general, $filters, $imap_stream, $imapConnection,
 250     $UseSeparateImapConnection, $AllowSpamFilters;
 251
 252 #    if ($mailbox == 'INBOX') {
 253         // Detect if we have already connected to IMAP or not.
 254         // Also check if we are forced to use a separate IMAP connection
 255         if ((!isset($imap_stream) && !isset($imapConnection)) ||
 256             $UseSeparateImapConnection) {
 257                 $stream = sqimap_login($username, $key, $imapServerAddress,
 258                                     $imapPort, 10);
 259                 $previously_connected = false;
 260         } elseif (isset($imapConnection)) {
 261             $stream = $imapConnection;
 262             $previously_connected = true;
 263         } else {
 264             $previously_connected = true;
 265             $stream = $imap_stream;
 266         }
 267
 268         if (sqimap_get_num_messages($stream, 'INBOX') > 0) {
 269             // Filter spam from inbox before we sort them into folders
 270             if ($AllowSpamFilters) {
 271                 spam_filters($stream);
 272             }
 273
 274             // Sort into folders
 275             user_filters($stream);
 276         }
 277
 278         if (!$previously_connected) {
 279             sqimap_logout($stream);
 280         }
 281 #    }
 282 }
 283
 284
 285 function user_filters($imap_stream) {
 286     global $data_dir, $username;
 287     $filters = load_filters();
 288     if (! $filters) return;
 289     $filters_user_scan = getPref($data_dir, $username, 'filters_user_scan');
 290
 291     sqimap_mailbox_select($imap_stream, 'INBOX');
 292
 293     // For every rule
 294     for ($i=0; $i < count($filters); $i++) {
 295         // If it is the "combo" rule
 296         if ($filters[$i]['where'] == 'To or Cc') {
 297             /*
 298             *  If it's "TO OR CC", we have to do two searches, one for TO
 299             *  and the other for CC.
 300             */
 301             filter_search_and_delete($imap_stream, 'TO',
 302             $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan);
 303             filter_search_and_delete($imap_stream, 'CC',
 304             $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan);
 305         } else {
 306             /*
 307             *  If it's a normal TO, CC, SUBJECT, or FROM, then handle it
 308             *  normally.
 309             */
 310             filter_search_and_delete($imap_stream, $filters[$i]['where'],
 311             $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan);
 312         }
 313     }
 314     // Clean out the mailbox whether or not auto_expunge is on
 315     // That way it looks like it was redirected properly
 316     sqimap_mailbox_expunge($imap_stream, 'INBOX');
 317 }
 318
 319 function filter_search_and_delete($imap, $where, $what, $where_to, $user_scan) {
 320     global $languages, $squirrelmail_language, $allow_charset_search;
 321     if ($user_scan == 'new') {
 322         $category = 'UNSEEN';
 323     } else {
 324         $category = 'ALL';
 325     }
 326
 327     if ($allow_charset_search && isset($languages[$squirrelmail_language]['CHARSET']) &&
 328         $languages[$squirrelmail_language]['CHARSET']) {
 329         $search_str = "SEARCH CHARSET "
 330             . strtoupper($languages[$squirrelmail_language]['CHARSET'])
 331             . ' ' . $category . ' ';
 332     } else {
 333         $search_str = 'SEARCH CHARSET US-ASCII ' . $category . ' ';
 334     }
 335     if ($where == "Header") {
 336        $what = explode(':', $what);
 337        $where = trim($where . ' ' . $what[0]);
 338        $what = addslashes(trim($what[1]));
 339     }
 340     $search_str .= $where . ' {' . strlen($what) . "}\r\n" . $what . "\r\n";
 341
 342     fputs ($imap, "a001 $search_str");
 343     $read = filters_sqimap_read_data ($imap, 'a001', true, $response, $message);
 344
 345     // This may have problems with EIMS due to it being goofy
 346
 347     for ($r=0; $r < count($read) &&
 348                 substr($read[$r], 0, 8) != '* SEARCH'; $r++) {}
 349     if ($response == 'OK') {
 350         $ids = explode(' ', $read[$r]);
 351         if (sqimap_mailbox_exists($imap, $where_to)) {
 352             for ($j=2; $j < count($ids); $j++) {
 353                 $id = trim($ids[$j]);
 354                 sqimap_messages_copy ($imap, $id, $id, $where_to);
 355                 sqimap_messages_flag ($imap, $id, $id, 'Deleted');
 356             }
 357         }
 358     }
 359 }
 360
 361 // These are the spam filters
 362 function spam_filters($imap_stream) {
 363     global $data_dir, $username;
 364     global $SpamFilters_YourHop;
 365     global $SpamFilters_DNScache;
 366     global $SpamFilters_SharedCache;
 367     global $SpamFilters_BulkQuery;
 368
 369     $filters_spam_scan = getPref($data_dir, $username, 'filters_spam_scan');
 370     $filters_spam_folder = getPref($data_dir, $username, 'filters_spam_folder');
 371     $filters = load_spam_filters();
 372
 373     if ($SpamFilters_SharedCache) {
 374        filters_LoadCache();
 375     }
 376
 377     $run = 0;
 378
 379     foreach ($filters as $Key=> $Value) {
 380         if ($Value['enabled']) {
 381             $run ++;
 382         }
 383     }
 384
 385     // short-circuit
 386     if ($run == 0) {
 387         return;
 388     }
 389
 390     sqimap_mailbox_select($imap_stream, 'INBOX');
 391
 392     // Ask for a big list of all "Received" headers in the inbox with
 393     // flags for each message.  Kinda big.
 394     //fputs($imap_stream, 'A3999 FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
 395     //    "(RECEIVED)])\r\n");
 396     $sid = sqimap_session_id();
 397     if ($filters_spam_scan != 'new') {
 398         fputs($imap_stream, $sid.' FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
 399             "(RECEIVED)])\r\n");
 400     } else {
 401         fputs ($imap_stream, $sid.' SEARCH UNSEEN' . "\r\n");
 402         $read = filters_sqimap_read_data ($imap_stream, $sid, true,
 403                                           $response, $message);
 404         $sid = sqimap_session_id();
 405         if ($response != 'OK' || trim($read[0]) == '* SEARCH') {
 406             fputs($imap_stream,
 407                   $sid.' FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
 408                      "(RECEIVED)])\r\n");
 409         } else {
 410             $read[0] = trim($read[0]);
 411             $i = 0;
 412             $imap_query = $sid.' FETCH ';
 413             $Chunks = explode(' ', $read[0]);
 414             for ($i=2; $i < (count($Chunks)-1) ; $i++) {
 415                 $imap_query .= $Chunks[$i].',';
 416             }
 417             $imap_query .= $Chunks[count($Chunks)-1];
 418             $imap_query .= ' (FLAGS BODY.PEEK[HEADER.FIELDS ';
 419             $imap_query .= "(RECEIVED)])\r\n";
 420             fputs($imap_stream, $imap_query);
 421         }
 422     }
 423
 424     $read = filters_sqimap_read_data ($imap_stream, $sid, true,
 425                                     $response, $message);
 426     if ($response != 'OK') {
 427         return;
 428     }
 429
 430     if (strlen($SpamFilters_BulkQuery) > 0) {
 431        filters_bulkquery($filters_spam_scan, $filters, $read);
 432     }
 433
 434     $i = 0;
 435     while ($i < count($read)) {
 436         // EIMS will give funky results
 437         $Chunks = explode(' ', $read[$i]);
 438         if ($Chunks[0] != '*') {
 439             $i ++;
 440             continue;
 441         }
 442         $MsgNum = $Chunks[1];
 443
 444         $IPs = array();
 445         $i ++;
 446         $IsSpam = 0;
 447
 448         // Look through all of the Received headers for IP addresses
 449         // Stop when I get ")" on a line
 450         // Stop if I get "*" on a line (don't advance)
 451         // and above all, stop if $i is bigger than the total # of lines
 452         while (($i < count($read)) &&
 453                 ($read[$i][0] != ')' && $read[$i][0] != '*' &&
 454                 $read[$i][0] != "\n") && (! $IsSpam)) {
 455             // Check to see if this line is the right "Received from" line
 456             // to check
 457             if (is_int(strpos($read[$i], $SpamFilters_YourHop))) {
 458
 459                 // short-circuit and skip work if we don't scan this one
 460                 $read[$i] = ereg_replace('[^0-9\.]', ' ', $read[$i]);
 461                 $elements = explode(' ', $read[$i]);
 462                 foreach ($elements as $value) {
 463                     if ($value != '' &&
 464                         ereg('[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}',
 465                             $value, $regs)) {
 466                         $Chunks = explode('.', $value);
 467                         if (filters_spam_check_site($Chunks[0],
 468                                 $Chunks[1], $Chunks[2], $Chunks[3],
 469                                 $filters)) {
 470                             $IsSpam ++;
 471                             break;  // no sense in checking more IPs
 472                         }
 473                         // If we've checked one IP and YourHop is
 474                         // just a space
 475                         if ($SpamFilters_YourHop == ' ') {
 476                             break;  // don't check any more
 477                         }
 478                     }
 479                 }
 480             }
 481             $i ++;
 482         }
 483
 484         // Lookie!  It's spam!  Yum!
 485         if ($IsSpam) {
 486             if (sqimap_mailbox_exists($imap_stream, $filters_spam_folder)) {
 487                 sqimap_messages_copy ($imap_stream, $MsgNum, $MsgNum,
 488                                     $filters_spam_folder);
 489                 sqimap_messages_flag ($imap_stream, $MsgNum, $MsgNum,
 490                                     'Deleted');
 491             }
 492         } else {
 493         }
 494     }
 495
 496     sqimap_mailbox_expunge($imap_stream, 'INBOX');
 497
 498     if ($SpamFilters_SharedCache) {
 499        filters_SaveCache();
 500     } else {
 501        session_register('SpamFilters_DNScache');
 502     }
 503 }
 504
 505
 506 // Does the loop through each enabled filter for the specified IP address.
 507 // IP format:  $a.$b.$c.$d
 508 function filters_spam_check_site($a, $b, $c, $d, &$filters) {
 509     global $SpamFilters_DNScache, $SpamFilters_CacheTTL;
 510     foreach ($filters as $key => $value) {
 511         if ($filters[$key]['enabled']) {
 512             if ($filters[$key]['dns']) {
 513                 $filter_revip = $d . '.' . $c . '.' . $b . '.' . $a . '.' .
 514                                 $filters[$key]['dns'];
 515                 if (strlen($SpamFilters_DNScache[$filter_revip]['L']) == 0) {
 516                     $SpamFilters_DNScache[$filter_revip]['L'] =
 517                                     gethostbyname($filter_revip);
 518                     $SpamFilters_DNScache[$filter_revip]['T'] =
 519                                        time() + $SpamFilters_CacheTTL;
 520                 }
 521                 if ($SpamFilters_DNScache[$filter_revip]['L'] ==
 522                     $filters[$key]['result']) {
 523                     return 1;
 524                 }
 525             }
 526         }
 527     }
 528     return 0;
 529 }
 530
 531 function load_filters() {
 532     global $data_dir, $username;
 533
 534     $filters = array();
 535     for ($i=0; $fltr = getPref($data_dir, $username, 'filter' . $i); $i++) {
 536         $ary = explode(',', $fltr);
 537         $filters[$i]['where'] = $ary[0];
 538         $filters[$i]['what'] = $ary[1];
 539         $filters[$i]['folder'] = $ary[2];
 540     }
 541     return $filters;
 542 }
 543
 544 function load_spam_filters() {
 545     global $data_dir, $username, $SpamFilters_ShowCommercial;
 546
 547     if ($SpamFilters_ShowCommercial) {
 548         $filters['MAPS RBL']['prefname'] = 'filters_spam_maps_rbl';
 549         $filters['MAPS RBL']['name'] = 'MAPS Realtime Blackhole List';
 550         $filters['MAPS RBL']['link'] = 'http://www.mail-abuse.org/rbl/';
 551         $filters['MAPS RBL']['dns'] = 'blackholes.mail-abuse.org';
 552         $filters['MAPS RBL']['result'] = '127.0.0.2';
 553         $filters['MAPS RBL']['comment'] =
 554             _("COMMERCIAL - This list contains servers that are verified spam senders. It is a pretty reliable list to scan spam from.");
 555
 556         $filters['MAPS RSS']['prefname'] = 'filters_spam_maps_rss';
 557         $filters['MAPS RSS']['name'] = 'MAPS Relay Spam Stopper';
 558         $filters['MAPS RSS']['link'] = 'http://www.mail-abuse.org/rss/';
 559         $filters['MAPS RSS']['dns'] = 'relays.mail-abuse.org';
 560         $filters['MAPS RSS']['result'] = '127.0.0.2';
 561         $filters['MAPS RSS']['comment'] =
 562             _("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.");
 563
 564         $filters['MAPS DUL']['prefname'] = 'filters_spam_maps_dul';
 565         $filters['MAPS DUL']['name'] = 'MAPS Dial-Up List';
 566         $filters['MAPS DUL']['link'] = 'http://www.mail-abuse.org/dul/';
 567         $filters['MAPS DUL']['dns'] = 'dialups.mail-abuse.org';
 568         $filters['MAPS DUL']['result'] = '127.0.0.3';
 569         $filters['MAPS DUL']['comment'] =
 570             _("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.");
 571
 572         $filters['MAPS RBLplus-RBL']['prefname'] = 'filters_spam_maps_rblplus_rbl';
 573         $filters['MAPS RBLplus-RBL']['name'] = 'MAPS RBL+ RBL List';
 574         $filters['MAPS RBLplus-RBL']['link'] = 'http://www.mail-abuse.org/';
 575         $filters['MAPS RBLplus-RBL']['dns'] = 'rbl-plus.mail-abuse.org';
 576         $filters['MAPS RBLplus-RBL']['result'] = '127.0.0.2';
 577         $filters['MAPS RBLplus-RBL']['comment'] =
 578             _("COMMERCIAL - RBL+ Blackhole entries.");
 579
 580         $filters['MAPS RBLplus-RSS']['prefname'] = 'filters_spam_maps_rblplus_rss';
 581         $filters['MAPS RBLplus-RSS']['name'] = 'MAPS RBL+ List RSS entries';
 582         $filters['MAPS RBLplus-RSS']['link'] = 'http://www.mail-abuse.org/';
 583         $filters['MAPS RBLplus-RSS']['dns'] = 'rbl-plus.mail-abuse.org';
 584         $filters['MAPS RBLplus-RSS']['result'] = '127.0.0.2';
 585         $filters['MAPS RBLplus-RSS']['comment'] =
 586             _("COMMERCIAL - RBL+ OpenRelay entries.");
 587
 588         $filters['MAPS RBLplus-DUL']['prefname'] = 'filters_spam_maps_rblplus_dul';
 589         $filters['MAPS RBLplus-DUL']['name'] = 'MAPS RBL+ List DUL entries';
 590         $filters['MAPS RBLplus-DUL']['link'] = 'http://www.mail-abuse.org/';
 591         $filters['MAPS RBLplus-DUL']['dns'] = 'rbl-plus.mail-abuse.org';
 592         $filters['MAPS RBLplus-DUL']['result'] = '127.0.0.3';
 593         $filters['MAPS RBLplus-DUL']['comment'] =
 594             _("COMMERCIAL - RBL+ Dial-up entries.");
 595     }
 596
 597     $filters['Osirusoft Relays']['prefname'] = 'filters_spam_maps_osirusoft_relay';
 598     $filters['Osirusoft Relays']['name'] = 'Osirusoft Relay List';
 599     $filters['Osirusoft Relays']['link'] = 'http://relays.osirusoft.com/';
 600     $filters['Osirusoft Relays']['dns'] = 'relays.osirusoft.com';
 601     $filters['Osirusoft Relays']['result'] = '127.0.0.2';
 602     $filters['Osirusoft Relays']['comment'] =
 603         _("FREE - Osirusoft Relays - Osirusofts list of verified open relays. Seems to include servers used by abuse@uunet.net auto-replies too.");
 604
 605     $filters['Osirusoft DUL']['prefname'] = 'filters_spam_maps_osirusoft_dul';
 606     $filters['Osirusoft DUL']['name'] = 'Osirusoft Dialup List';
 607     $filters['Osirusoft DUL']['link'] = 'http://relays.osirusoft.com/';
 608     $filters['Osirusoft DUL']['dns'] = 'relays.osirusoft.com';
 609     $filters['Osirusoft DUL']['result'] = '127.0.0.3';
 610     $filters['Osirusoft DUL']['comment'] =
 611         _("FREE - Osirusoft Dialups - Osirusofts Dialup Spam Source list.");
 612
 613     $filters['Osirusoft Spam Source']['prefname'] = 'filters_spam_maps_osirusoft_rc';
 614     $filters['Osirusoft Spam Source']['name'] = 'Osirusoft Confirmed Spam Source List';
 615     $filters['Osirusoft Spam Source']['link'] = 'http://relays.osirusoft.com/';
 616     $filters['Osirusoft Spam Source']['dns'] = 'relays.osirusoft.com';
 617     $filters['Osirusoft Spam Source']['result'] = '127.0.0.4';
 618     $filters['Osirusoft Spam Source']['comment'] =
 619         _("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.");
 620
 621     $filters['Osirusoft Smart Host']['prefname'] = 'filters_spam_maps_osirusoft_sh';
 622     $filters['Osirusoft Smart Host']['name'] = 'Osirusoft Smart Host List';
 623     $filters['Osirusoft Smart Host']['link'] = 'http://relays.osirusoft.com/';
 624     $filters['Osirusoft Smart Host']['dns'] = 'relays.osirusoft.com';
 625     $filters['Osirusoft Smart Host']['result'] = '127.0.0.5';
 626     $filters['Osirusoft Smart Host']['comment'] =
 627         _("FREE - Osirusoft Smart Hosts - List of hosts that are secure but relay for other mail servers that are not secure.");
 628
 629     $filters['Osirusoft SPAMware']['prefname'] = 'filters_spam_maps_osirusoft_ss';
 630     $filters['Osirusoft SPAMware']['name'] = 'Osirusoft Spamware Developers List';
 631     $filters['Osirusoft SPAMware']['link'] = 'http://relays.osirusoft.com/';
 632     $filters['Osirusoft SPAMware']['dns'] = 'relays.osirusoft.com';
 633     $filters['Osirusoft SPAMware']['result'] = '127.0.0.6';
 634     $filters['Osirusoft SPAMware']['comment'] =
 635         _("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.");
 636
 637     $filters['Osirusoft Unc. OptIn']['prefname'] = 'filters_spam_maps_osirusoft_sl';
 638     $filters['Osirusoft Unc. OptIn']['name'] = 'Osirusoft Unconfirmed OptIn Server List';
 639     $filters['Osirusoft Unc. OptIn']['link'] = 'http://relays.osirusoft.com/';
 640     $filters['Osirusoft Unc. OptIn']['dns'] = 'relays.osirusoft.com';
 641     $filters['Osirusoft Unc. OptIn']['result'] = '127.0.0.7';
 642     $filters['Osirusoft Unc. OptIn']['comment'] =
 643         _("FREE - Osirusoft Unconfirmed OptIn Servers - List of listservers that opt users in without confirmation.");
 644
 645     $filters['Osirusoft Insecure Formmail']['prefname'] = 'filters_spam_maps_osirusoft_fm';
 646     $filters['Osirusoft Insecure Formmail']['name'] = 'Osirusoft Insecure formmail.cvi Script List';
 647     $filters['Osirusoft Insecure Formmail']['link'] = 'http://relays.osirusoft.com/';
 648     $filters['Osirusoft Insecure Formmail']['dns'] = 'relays.osirusoft.com';
 649     $filters['Osirusoft Insecure Formmail']['result'] = '127.0.0.8';
 650     $filters['Osirusoft Insecure Formmail']['comment'] =
 651         _("FREE - Osirusoft Insecure formmail.cgi scripts - List of insecure formmail.cgi scripts. (planned).");
 652
 653     $filters['Osirusoft Open Proxy']['prefname'] = 'filters_spam_maps_osirusoft_op';
 654     $filters['Osirusoft Open Proxy']['name'] = 'Osirusoft Open Proxy Server List';
 655     $filters['Osirusoft Open Proxy']['link'] = 'http://relays.osirusoft.com/';
 656     $filters['Osirusoft Open Proxy']['dns'] = 'relays.osirusoft.com';
 657     $filters['Osirusoft Open Proxy']['result'] = '127.0.0.9';
 658     $filters['Osirusoft Open Proxy']['comment'] =
 659         _("FREE - Osirusoft Open Proxy Servers - List of Open Proxy Servers.");
 660
 661     $filters['ORDB']['prefname'] = 'filters_spam_ordb';
 662     $filters['ORDB']['name'] = 'Open Relay Database List';
 663     $filters['ORDB']['link'] = 'http://www.ordb.org/';
 664     $filters['ORDB']['dns'] = 'relays.ordb.org';
 665     $filters['ORDB']['result'] = '127.0.0.2';
 666     $filters['ORDB']['comment'] =
 667         _("FREE - ORDB was born when ORBS went off the air. It seems to have fewer false positives than ORBS did though.");
 668
 669     $filters['FiveTen Direct']['prefname'] = 'filters_spam_fiveten_src';
 670     $filters['FiveTen Direct']['name'] = 'Five-Ten-sg.com Direct SPAM Sources';
 671     $filters['FiveTen Direct']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 672     $filters['FiveTen Direct']['dns'] = 'blackholes.five-ten-sg.com';
 673     $filters['FiveTen Direct']['result'] = '127.0.0.2';
 674     $filters['FiveTen Direct']['comment'] =
 675         _("FREE - Five-Ten-sg.com - Direct SPAM sources.");
 676
 677     $filters['FiveTen DUL']['prefname'] = 'filters_spam_fiveten_dul';
 678     $filters['FiveTen DUL']['name'] = 'Five-Ten-sg.com DUL Lists';
 679     $filters['FiveTen DUL']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 680     $filters['FiveTen DUL']['dns'] = 'blackholes.five-ten-sg.com';
 681     $filters['FiveTen DUL']['result'] = '127.0.0.3';
 682     $filters['FiveTen DUL']['comment'] =
 683         _("FREE - Five-Ten-sg.com - Dial-up lists - includes some DSL IPs.");
 684
 685     $filters['FiveTen Unc. OptIn']['prefname'] = 'filters_spam_fiveten_oi';
 686     $filters['FiveTen Unc. OptIn']['name'] = 'Five-Ten-sg.com Unconfirmed OptIn Lists';
 687     $filters['FiveTen Unc. OptIn']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 688     $filters['FiveTen Unc. OptIn']['dns'] = 'blackholes.five-ten-sg.com';
 689     $filters['FiveTen Unc. OptIn']['result'] = '127.0.0.4';
 690     $filters['FiveTen Unc. OptIn']['comment'] =
 691         _("FREE - Five-Ten-sg.com - Bulk mailers that do not use confirmed opt-in.");
 692
 693     $filters['FiveTen Others']['prefname'] = 'filters_spam_fiveten_oth';
 694     $filters['FiveTen Others']['name'] = 'Five-Ten-sg.com Other Misc. Servers';
 695     $filters['FiveTen Others']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 696     $filters['FiveTen Others']['dns'] = 'blackholes.five-ten-sg.com';
 697     $filters['FiveTen Others']['result'] = '127.0.0.5';
 698     $filters['FiveTen Others']['comment'] =
 699         _("FREE - Five-Ten-sg.com - Other misc. servers.");
 700
 701     $filters['FiveTen Single Stage']['prefname'] = 'filters_spam_fiveten_ss';
 702     $filters['FiveTen Single Stage']['name'] = 'Five-Ten-sg.com Single Stage Servers';
 703     $filters['FiveTen Single Stage']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 704     $filters['FiveTen Single Stage']['dns'] = 'blackholes.five-ten-sg.com';
 705     $filters['FiveTen Single Stage']['result'] = '127.0.0.6';
 706     $filters['FiveTen Single Stage']['comment'] =
 707         _("FREE - Five-Ten-sg.com - Single Stage servers.");
 708
 709     $filters['FiveTen SPAM Support']['prefname'] = 'filters_spam_fiveten_supp';
 710     $filters['FiveTen SPAM Support']['name'] = 'Five-Ten-sg.com SPAM Support Servers';
 711     $filters['FiveTen SPAM Support']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 712     $filters['FiveTen SPAM Support']['dns'] = 'blackholes.five-ten-sg.com';
 713     $filters['FiveTen SPAM Support']['result'] = '127.0.0.7';
 714     $filters['FiveTen SPAM Support']['comment'] =
 715         _("FREE - Five-Ten-sg.com - SPAM Support servers.");
 716
 717     $filters['FiveTen Web forms']['prefname'] = 'filters_spam_fiveten_wf';
 718     $filters['FiveTen Web forms']['name'] = 'Five-Ten-sg.com Web Form IPs';
 719     $filters['FiveTen Web forms']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
 720     $filters['FiveTen Web forms']['dns'] = 'blackholes.five-ten-sg.com';
 721     $filters['FiveTen Web forms']['result'] = '127.0.0.8';
 722     $filters['FiveTen Web forms']['comment'] =
 723         _("FREE - Five-Ten-sg.com - Web Form IPs.");
 724
 725     $filters['Dorkslayers']['prefname'] = 'filters_spam_dorks';
 726     $filters['Dorkslayers']['name'] = 'Dorkslayers Lists';
 727     $filters['Dorkslayers']['link'] = 'http://www.dorkslayers.com';
 728     $filters['Dorkslayers']['dns'] = 'orbs.dorkslayers.com';
 729     $filters['Dorkslayers']['result'] = '127.0.0.2';
 730     $filters['Dorkslayers']['comment'] =
 731         _("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.");
 732
 733     $filters['SPAMhaus']['prefname'] = 'filters_spam_spamhaus';
 734     $filters['SPAMhaus']['name'] = 'SPAMhaus Lists';
 735     $filters['SPAMhaus']['link'] = 'http://www.spamhaus.org';
 736     $filters['SPAMhaus']['dns'] = 'sbl.spamhaus.org';
 737     $filters['SPAMhaus']['result'] = '127.0.0.6';
 738     $filters['SPAMhaus']['comment'] =
 739         _("FREE - SPAMhaus - A list of well-known SPAM sources.");
 740
 741     $filters['SPAMcop']['prefname'] = 'filters_spam_spamcop';
 742     $filters['SPAMcop']['name'] = 'SPAM Cop Lists';
 743     $filters['SPAMcop']['link'] = 'http://spamcop.net/bl.shtml';
 744     $filters['SPAMcop']['dns'] = 'bl.spamcop.net';
 745     $filters['SPAMcop']['result'] = '127.0.0.2';
 746     $filters['SPAMcop']['comment'] =
 747         _("FREE, for now - SPAMCOP - An interesting solution that lists servers that have a very high spam to legit email ratio (85% or more).");
 748
 749     $filters['dev.null.dk']['prefname'] = 'filters_spam_devnull';
 750     $filters['dev.null.dk']['name'] = 'dev.null.dk Lists';
 751     $filters['dev.null.dk']['link'] = 'http://dev.null.dk/';
 752     $filters['dev.null.dk']['dns'] = 'dev.null.dk';
 753     $filters['dev.null.dk']['result'] = '127.0.0.2';
 754     $filters['dev.null.dk']['comment'] =
 755         _("FREE - dev.null.dk - I don't have any detailed info on this list.");
 756
 757     $filters['visi.com']['prefname'] = 'filters_spam_visi';
 758     $filters['visi.com']['name'] = 'visi.com Relay Stop List';
 759     $filters['visi.com']['link'] = 'http://relays.visi.com';
 760     $filters['visi.com']['dns'] = 'relays.visi.com';
 761     $filters['visi.com']['result'] = '127.0.0.2';
 762     $filters['visi.com']['comment'] =
 763         _("FREE - visi.com - Relay Stop List. Very conservative OpenRelay List.");
 764
 765     $filters['2mbit.com Open Relays']['prefname'] = 'filters_spam_2mb_or';
 766     $filters['2mbit.com Open Relays']['name'] = '2mbit.com Open Relays List';
 767     $filters['2mbit.com Open Relays']['link'] = 'http://www.2mbit.com/sbl.php';
 768     $filters['2mbit.com Open Relays']['dns'] = 'blackholes.2mbit.com';
 769     $filters['2mbit.com Open Relays']['result'] = '127.0.0.2';
 770     $filters['2mbit.com Open Relays']['comment'] =
 771         _("FREE - 2mbit.com Open Relays - Another list of Open Relays.");
 772
 773     $filters['2mbit.com SPAM Source']['prefname'] = 'filters_spam_2mb_ss';
 774     $filters['2mbit.com SPAM Source']['name'] = '2mbit.com SPAM Source List';
 775     $filters['2mbit.com SPAM Source']['link'] = 'http://www.2mbit.com/sbl.php';
 776     $filters['2mbit.com SPAM Source']['dns'] = 'blackholes.2mbit.com';
 777     $filters['2mbit.com SPAM Source']['result'] = '127.0.0.4';
 778     $filters['2mbit.com SPAM Source']['comment'] =
 779         _("FREE - 2mbit.com SPAM Source - List of Direct SPAM Sources.");
 780
 781     $filters['2mbit.com SPAM ISPs']['prefname'] = 'filters_spam_2mb_isp';
 782     $filters['2mbit.com SPAM ISPs']['name'] = '2mbit.com SPAM-friendly ISP List';
 783     $filters['2mbit.com SPAM ISPs']['link'] = 'http://www.2mbit.com/sbl.php';
 784     $filters['2mbit.com SPAM ISPs']['dns'] = 'blackholes.2mbit.com';
 785     $filters['2mbit.com SPAM ISPs']['result'] = '127.0.0.10';
 786     $filters['2mbit.com SPAM ISPs']['comment'] =
 787         _("FREE - 2mbit.com SPAM ISPs - List of SPAM-friendly ISPs.");
 788
 789     $filters['Leadmon DUL']['prefname'] = 'filters_spam_lm_dul';
 790     $filters['Leadmon DUL']['name'] = 'Leadmon.net DUL List';
 791     $filters['Leadmon DUL']['link'] = 'http://www.leadmon.net/spamguard/';
 792     $filters['Leadmon DUL']['dns'] = 'spamguard.leadmon.net';
 793     $filters['Leadmon DUL']['result'] = '127.0.0.2';
 794     $filters['Leadmon DUL']['comment'] =
 795         _("FREE - Leadmon DUL - Another list of Dial-up or otherwise dynamically assigned IPs.");
 796
 797     $filters['Leadmon SPAM Source']['prefname'] = 'filters_spam_lm_ss';
 798     $filters['Leadmon SPAM Source']['name'] = 'Leadmon.net SPAM Source List';
 799     $filters['Leadmon SPAM Source']['link'] = 'http://www.leadmon.net/spamguard/';
 800     $filters['Leadmon SPAM Source']['dns'] = 'spamguard.leadmon.net';
 801     $filters['Leadmon SPAM Source']['result'] = '127.0.0.3';
 802     $filters['Leadmon SPAM Source']['comment'] =
 803         _("FREE - Leadmon SPAM Source - List of IPs Leadmon.net has received SPAM directly from.");
 804
 805     $filters['Leadmon Bulk Mailers']['prefname'] = 'filters_spam_lm_bm';
 806     $filters['Leadmon Bulk Mailers']['name'] = 'Leadmon.net Bulk Mailers List';
 807     $filters['Leadmon Bulk Mailers']['link'] = 'http://www.leadmon.net/spamguard/';
 808     $filters['Leadmon Bulk Mailers']['dns'] = 'spamguard.leadmon.net';
 809     $filters['Leadmon Bulk Mailers']['result'] = '127.0.0.4';
 810     $filters['Leadmon Bulk Mailers']['comment'] =
 811         _("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.");
 812
 813     $filters['Leadmon Open Relays']['prefname'] = 'filters_spam_lm_or';
 814     $filters['Leadmon Open Relays']['name'] = 'Leadmon.net Open Relays List';
 815     $filters['Leadmon Open Relays']['link'] = 'http://www.leadmon.net/spamguard/';
 816     $filters['Leadmon Open Relays']['dns'] = 'spamguard.leadmon.net';
 817     $filters['Leadmon Open Relays']['result'] = '127.0.0.5';
 818     $filters['Leadmon Open Relays']['comment'] =
 819         _("FREE - Leadmon Open Relays - Single Stage Open Relays that are not listed on other active RBLs.");
 820
 821     $filters['Leadmon Multi-stage']['prefname'] = 'filters_spam_lm_ms';
 822     $filters['Leadmon Multi-stage']['name'] = 'Leadmon.net Multi-Stage Relay List';
 823     $filters['Leadmon Multi-stage']['link'] = 'http://www.leadmon.net/spamguard/';
 824     $filters['Leadmon Multi-stage']['dns'] = 'spamguard.leadmon.net';
 825     $filters['Leadmon Multi-stage']['result'] = '127.0.0.6';
 826     $filters['Leadmon Multi-stage']['comment'] =
 827         _("FREE - Leadmon Multi-stage - Multi-Stage Open Relays that are not listed on other active RBLs and that have sent SPAM to Leadmon.net.");
 828
 829     $filters['Leadmon SpamBlock']['prefname'] = 'filters_spam_lm_sb';
 830     $filters['Leadmon SpamBlock']['name'] = 'Leadmon.net SpamBlock Sites List';
 831     $filters['Leadmon SpamBlock']['link'] = 'http://www.leadmon.net/spamguard/';
 832     $filters['Leadmon SpamBlock']['dns'] = 'spamguard.leadmon.net';
 833     $filters['Leadmon SpamBlock']['result'] = '127.0.0.7';
 834     $filters['Leadmon SpamBlock']['comment'] =
 835         _("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.");
 836
 837     $filters['NJABL Open Relays']['prefname'] = 'filters_spam_njabl_or';
 838     $filters['NJABL Open Relays']['name'] = 'NJABL Open Relay/Direct Spam Source List';
 839     $filters['NJABL Open Relays']['link'] = 'http://www.njabl.org/';
 840     $filters['NJABL Open Relays']['dns'] = 'dnsbl.njabl.org';
 841     $filters['NJABL Open Relays']['result'] = '127.0.0.2';
 842     $filters['NJABL Open Relays']['comment'] =
 843         _("FREE, for now - Not Just Another Blacklist - Both Open Relays and Direct SPAM Sources.");
 844
 845     $filters['NJABL DUL']['prefname'] = 'filters_spam_njabl_dul';
 846     $filters['NJABL DUL']['name'] = 'NJABL Dial-ups List';
 847     $filters['NJABL DUL']['link'] = 'http://www.njabl.org/';
 848     $filters['NJABL DUL']['dns'] = 'dnsbl.njabl.org';
 849     $filters['NJABL DUL']['result'] = '127.0.0.3';
 850     $filters['NJABL DUL']['comment'] =
 851         _("FREE, for now - Not Just Another Blacklist - Dial-up IPs.");
 852
 853     $filters['Conf DSBL.ORG Relay']['prefname'] = 'filters_spam_dsbl_conf_ss';
 854     $filters['Conf DSBL.ORG Relay']['name'] = 'DSBL.org Confirmed Relay List';
 855     $filters['Conf DSBL.ORG Relay']['link'] = 'http://www.dsbl.org/';
 856     $filters['Conf DSBL.ORG Relay']['dns'] = 'list.dsbl.org';
 857     $filters['Conf DSBL.ORG Relay']['result'] = '127.0.0.2';
 858     $filters['Conf DSBL.ORG Relay']['comment'] =
 859         _("FREE - Distributed Sender Boycott List - Confirmed Relays");
 860
 861     $filters['Conf DSBL.ORG Multi-Stage']['prefname'] = 'filters_spam_dsbl_conf_ms';
 862     $filters['Conf DSBL.ORG Multi-Stage']['name'] = 'DSBL.org Confirmed Multi-Stage Relay List';
 863     $filters['Conf DSBL.ORG Multi-Stage']['link'] = 'http://www.dsbl.org/';
 864     $filters['Conf DSBL.ORG Multi-Stage']['dns'] = 'multihop.dsbl.org';
 865     $filters['Conf DSBL.ORG Multi-Stage']['result'] = '127.0.0.2';
 866     $filters['Conf DSBL.ORG Multi-Stage']['comment'] =
 867         _("FREE - Distributed Sender Boycott List - Confirmed Multi-stage Relays");
 868
 869     $filters['UN-Conf DSBL.ORG']['prefname'] = 'filters_spam_dsbl_unc';
 870     $filters['UN-Conf DSBL.ORG']['name'] = 'DSBL.org UN-Confirmed Relay List';
 871     $filters['UN-Conf DSBL.ORG']['link'] = 'http://www.dsbl.org/';
 872     $filters['UN-Conf DSBL.ORG']['dns'] = 'unconfirmed.dsbl.org';
 873     $filters['UN-Conf DSBL.ORG']['result'] = '127.0.0.2';
 874     $filters['UN-Conf DSBL.ORG']['comment'] =
 875         _("FREE - Distributed Sender Boycott List - UN-Confirmed Relays");
 876
 877     foreach ($filters as $Key => $Value) {
 878         $filters[$Key]['enabled'] = getPref($data_dir, $username,
 879             $filters[$Key]['prefname']);
 880     }
 881
 882     return $filters;
 883 }
 884
 885 function remove_filter ($id) {
 886     global $data_dir, $username;
 887
 888     while ($nextFilter = getPref($data_dir, $username, 'filter' .
 889         ($id + 1))) {
 890         setPref($data_dir, $username, 'filter' . $id, $nextFilter);
 891         $id ++;
 892     }
 893
 894     removePref($data_dir, $username, 'filter' . $id);
 895 }
 896
 897 function filter_swap($id1, $id2) {
 898     global $data_dir, $username;
 899
 900     $FirstFilter = getPref($data_dir, $username, 'filter' . $id1);
 901     $SecondFilter = getPref($data_dir, $username, 'filter' . $id2);
 902
 903     if ($FirstFilter && $SecondFilter) {
 904         setPref($data_dir, $username, 'filter' . $id2, $FirstFilter);
 905         setPref($data_dir, $username, 'filter' . $id1, $SecondFilter);
 906     }
 907 }
 908
 909 /* This update the filter rules when
 910    renaming or deleting folders */
 911 function update_for_folder ($args) {
 912     $old_folder = $args[0];
 913         $new_folder = $args[2];
 914         $action = $args[1];
 915     global $plugins, $data_dir, $username;
 916     $filters = array();
 917     $filters = load_filters();
 918     $filter_count = count($filters);
 919     $p = 0;
 920     for ($i=0;$i<$filter_count;$i++) {
 921         if (!empty($filters)) {
 922             if ($old_folder == $filters[$i]['folder']) {
 923                 if ($action == 'rename') {
 924                     $filters[$i]['folder'] = $new_folder;
 925                     setPref($data_dir, $username, 'filter'.$i,
 926                     $filters[$i]['where'].','.$filters[$i]['what'].','.$new_folder);
 927                 }
 928                 elseif ($action == 'delete') {
 929                     remove_filter($p);
 930                     $p = $p-1;
 931                 }
 932             }
 933         $p++;
 934         }
 935     }
 936 }
 937 ?>