File:  [mozdev] / cdn / www / b2-include / class.POP3.php
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Thu Mar 6 11:19:42 2003 UTC (16 years, 7 months ago) by cdn
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    1: <?php 
    2: 
    3:    /**
    4:     * mail_fetch/setup.php
    5:     *
    6:     * Copyright (c) 1999-2002 The SquirrelMail Project Team
    7:     *
    8:     * Copyright (c) 1999 CDI (cdi@thewebmasters.net) All Rights Reserved
    9:     * Modified by Philippe Mingo 2001 mingo@rotedic.com
   10:     * An RFC 1939 compliant wrapper class for the POP3 protocol.
   11:     *
   12:     * Licensed under the GNU GPL. For full terms see the file COPYING.
   13:     *
   14:     * pop3 class
   15:     *
   16:     * $Id: class.POP3.php,v 1.1 2003/03/06 11:19:42 cdn Exp $
   17:     */
   18: 
   19: class POP3 {
   20:     var $ERROR      = '';       //  Error string.
   21: 
   22:     var $TIMEOUT    = 60;       //  Default timeout before giving up on a
   23:                                 //  network operation.
   24: 
   25:     var $COUNT      = -1;       //  Mailbox msg count
   26: 
   27:     var $BUFFER     = 512;      //  Socket buffer for socket fgets() calls.
   28:                                 //  Per RFC 1939 the returned line a POP3
   29:                                 //  server can send is 512 bytes.
   30: 
   31:     var $FP         = '';       //  The connection to the server's
   32:                                 //  file descriptor
   33: 
   34:     var $MAILSERVER = '';       // Set this to hard code the server name
   35: 
   36:     var $DEBUG      = FALSE;    // set to true to echo pop3
   37:                                 // commands and responses to error_log
   38:                                 // this WILL log passwords!
   39: 
   40:     var $BANNER     = '';       //  Holds the banner returned by the
   41:                                 //  pop server - used for apop()
   42: 
   43:     var $RFC1939    = TRUE;     //  Set by noop(). See rfc1939.txt
   44:                                 //
   45: 
   46:     var $ALLOWAPOP  = FASLE;    //  Allow or disallow apop()
   47:                                 //  This must be set to true
   48:                                 //  manually
   49: 
   50:     function POP3 ( $server = '', $timeout = '' ) {
   51:         settype($this->BUFFER,"integer");
   52:         if( !empty($server) ) {
   53:             // Do not allow programs to alter MAILSERVER
   54:             // if it is already specified. They can get around
   55:             // this if they -really- want to, so don't count on it.
   56:             if(empty($this->MAILSERVER))
   57:                 $this->MAILSERVER = $server;
   58:         }
   59:         if(!empty($timeout)) {
   60:             settype($timeout,"integer");
   61:             $this->TIMEOUT = $timeout;
   62:             set_time_limit($timeout);
   63:         }
   64:         return true;
   65:     }
   66: 
   67:     function update_timer () {
   68:         set_time_limit($this->TIMEOUT);
   69:         return true;
   70:     }
   71: 
   72:     function connect ($server, $port = 110)  {
   73:         //  Opens a socket to the specified server. Unless overridden,
   74:         //  port defaults to 110. Returns true on success, false on fail
   75: 
   76:         // If MAILSERVER is set, override $server with it's value
   77: 
   78:         if(!empty($this->MAILSERVER))
   79:             $server = $this->MAILSERVER;
   80: 
   81:         if(empty($server)){
   82:             $this->ERROR = _("POP3 connect:") . ' ' . _("No server specified");
   83:             unset($this->FP);
   84:             return false;
   85:         }
   86: 
   87:         $fp = fsockopen("$server", $port, $errno, $errstr);
   88: 
   89:         if(!$fp) {
   90:             $this->ERROR = _("POP3 connect:") . ' ' . _("Error ") . "[$errno] [$errstr]";
   91:             unset($this->FP);
   92:             return false;
   93:         }
   94: 
   95:         socket_set_blocking($fp,-1);
   96:         $this->update_timer();
   97:         $reply = fgets($fp,$this->BUFFER);
   98:         $reply = $this->strip_clf($reply);
   99:         if($this->DEBUG)
  100:             error_log("POP3 SEND [connect: $server] GOT [$reply]",0);
  101:         if(!$this->is_ok($reply)) {
  102:             $this->ERROR = _("POP3 connect:") . ' ' . _("Error ") . "[$reply]";
  103:             unset($this->FP);
  104:             return false;
  105:         }
  106:         $this->FP = $fp;
  107:         $this->BANNER = $this->parse_banner($reply);
  108:         $this->RFC1939 = $this->noop();
  109:         if($this->RFC1939) {
  110:             $this->ERROR = _("POP3: premature NOOP OK, NOT an RFC 1939 Compliant server");
  111:             $this->quit();
  112:             return false;
  113:         } else
  114:             return true;
  115:     }
  116: 
  117:     function noop () {
  118:     
  119:         if(!isset($this->FP)) {
  120:             $this->ERROR = _("POP3 noop:") . ' ' . _("No connection to server");
  121:             return false;
  122:         } else {
  123:             $cmd = "NOOP";
  124:             $reply = $this->send_cmd( $cmd );
  125:             return( $this->is_ok( $reply ) );
  126:         }
  127:     }
  128: 
  129:     function user ($user = "") {
  130:         // Sends the USER command, returns true or false
  131: 
  132:         if( empty($user) ) {
  133:             $this->ERROR = _("POP3 user:") . ' ' . _("no login ID submitted");
  134:             return false;
  135:         } elseif(!isset($this->FP)) {
  136:             $this->ERROR = _("POP3 user:") . ' ' . _("connection not established");
  137:             return false;
  138:         } else {
  139:             $reply = $this->send_cmd("USER $user");
  140:             if(!$this->is_ok($reply)) {
  141:                 $this->ERROR = _("POP3 user:") . ' ' . _("Error ") . "[$reply]";
  142:                 return false;
  143:             } else
  144:                 return true;
  145:         }
  146:     }
  147: 
  148:     function pass ($pass = "")     {
  149:         // Sends the PASS command, returns # of msgs in mailbox,
  150:         // returns false (undef) on Auth failure
  151: 
  152:         if(empty($pass)) {
  153:             $this->ERROR = _("POP3 pass:") . ' ' . _("No password submitted");
  154:             return false;
  155:         } elseif(!isset($this->FP)) {
  156:             $this->ERROR = _("POP3 pass:") . ' ' . _("connection not established");
  157:             return false;
  158:         } else {
  159:             $reply = $this->send_cmd("PASS $pass");
  160:             if(!$this->is_ok($reply)) {
  161:                 $this->ERROR = _("POP3 pass:") . ' ' . _("authentication failed ") . "[$reply]";
  162:                 $this->quit();
  163:                 return false;
  164:             } else {
  165:                 //  Auth successful.
  166:                 $count = $this->last("count");
  167:                 $this->COUNT = $count;
  168:                 $this->RFC1939 = $this->noop();
  169:                 if(!$this->RFC1939) {
  170:                     $this->ERROR = _("POP3 pass:") . ' ' . _("NOOP failed. Server not RFC 1939 compliant");
  171:                     $this->quit();
  172:                     return false;
  173:                 } else
  174:                     return $count;
  175:             }
  176:         }
  177:     }
  178: 
  179:     function apop ($login,$pass) {
  180:         //  Attempts an APOP login. If this fails, it'll
  181:         //  try a standard login. YOUR SERVER MUST SUPPORT
  182:         //  THE USE OF THE APOP COMMAND!
  183:         //  (apop is optional per rfc1939)
  184: 
  185:         if(!isset($this->FP)) {
  186:             $this->ERROR = _("POP3 apop:") . ' ' . _("No connection to server");
  187:             return false;
  188:         } elseif(!$this->ALLOWAPOP) {
  189:             $retVal = $this->login($login,$pass);
  190:             return $retVal;
  191:         } elseif(empty($login)) {
  192:             $this->ERROR = _("POP3 apop:") . ' ' . _("No login ID submitted");
  193:             return false;
  194:         } elseif(empty($pass)) {
  195:             $this->ERROR = _("POP3 apop:") . ' ' . _("No password submitted");
  196:             return false;
  197:         } else {
  198:             $banner = $this->BANNER;
  199:             if( (!$banner) or (empty($banner)) ) {
  200:                 $this->ERROR = _("POP3 apop:") . ' ' . _("No server banner") . ' - ' . _("abort");
  201:                 $retVal = $this->login($login,$pass);
  202:                 return $retVal;
  203:             } else {
  204:                 $AuthString = $banner;
  205:                 $AuthString .= $pass;
  206:                 $APOPString = md5($AuthString);
  207:                 $cmd = "APOP $login $APOPString";
  208:                 $reply = $this->send_cmd($cmd);
  209:                 if(!$this->is_ok($reply)) {
  210:                     $this->ERROR = _("POP3 apop:") . ' ' . _("apop authentication failed") . ' - ' . _("abort");
  211:                     $retVal = $this->login($login,$pass);
  212:                     return $retVal;
  213:                 } else {
  214:                     //  Auth successful.
  215:                     $count = $this->last("count");
  216:                     $this->COUNT = $count;
  217:                     $this->RFC1939 = $this->noop();
  218:                     if(!$this->RFC1939) {
  219:                         $this->ERROR = _("POP3 apop:") . ' ' . _("NOOP failed. Server not RFC 1939 compliant");
  220:                         $this->quit();
  221:                         return false;
  222:                     } else
  223:                         return $count;
  224:                 }
  225:             }
  226:         }
  227:     }
  228: 
  229:     function login ($login = "", $pass = "") {
  230:         // Sends both user and pass. Returns # of msgs in mailbox or
  231:         // false on failure (or -1, if the error occurs while getting
  232:         // the number of messages.)
  233: 
  234:         if( !isset($this->FP) ) {
  235:             $this->ERROR = _("POP3 login:") . ' ' . _("No connection to server");
  236:             return false;
  237:         } else {
  238:             $fp = $this->FP;
  239:             if( !$this->user( $login ) ) {
  240:                 //  Preserve the error generated by user()
  241:                 return false;
  242:             } else {
  243:                 $count = $this->pass($pass);
  244:                 if( (!$count) || ($count == -1) ) {
  245:                     //  Preserve the error generated by last() and pass()
  246:                     return false;
  247:                 } else
  248:                     return $count;
  249:             }
  250:         }
  251:     }
  252: 
  253:     function top ($msgNum, $numLines = "0") {
  254:         //  Gets the header and first $numLines of the msg body
  255:         //  returns data in an array with each returned line being
  256:         //  an array element. If $numLines is empty, returns
  257:         //  only the header information, and none of the body.
  258: 
  259:         if(!isset($this->FP)) {
  260:             $this->ERROR = _("POP3 top:") . ' ' . _("No connection to server");
  261:             return false;
  262:         }
  263:         $this->update_timer();
  264: 
  265:         $fp = $this->FP;
  266:         $buffer = $this->BUFFER;
  267:         $cmd = "TOP $msgNum $numLines";
  268:         fwrite($fp, "TOP $msgNum $numLines\r\n");
  269:         $reply = fgets($fp, $buffer);
  270:         $reply = $this->strip_clf($reply);
  271:         if($this->DEBUG) {
  272:             @error_log("POP3 SEND [$cmd] GOT [$reply]",0);
  273:         }
  274:         if(!$this->is_ok($reply))
  275:         {
  276:             $this->ERROR = _("POP3 top:") . ' ' . _("Error ") . "[$reply]";
  277:             return false;
  278:         }
  279: 
  280:         $count = 0;
  281:         $MsgArray = array();
  282: 
  283:         $line = fgets($fp,$buffer);
  284:         while ( !ereg("^\.\r\n",$line))
  285:         {
  286:             $MsgArray[$count] = $line;
  287:             $count++;
  288:             $line = fgets($fp,$buffer);
  289:             if(empty($line))    { break; }
  290:         }
  291: 
  292:         return $MsgArray;
  293:     }
  294: 
  295:     function pop_list ($msgNum = "") {
  296:         //  If called with an argument, returns that msgs' size in octets
  297:         //  No argument returns an associative array of undeleted
  298:         //  msg numbers and their sizes in octets
  299: 
  300:         if(!isset($this->FP))
  301:         {
  302:             $this->ERROR = _("POP3 pop_list:") . ' ' . _("No connection to server");
  303:             return false;
  304:         }
  305:         $fp = $this->FP;
  306:         $Total = $this->COUNT;
  307:         if( (!$Total) or ($Total == -1) )
  308:         {
  309:             return false;
  310:         }
  311:         if($Total == 0)
  312:         {
  313:             return array("0","0");
  314:             // return -1;   // mailbox empty
  315:         }
  316: 
  317:         $this->update_timer();
  318: 
  319:         if(!empty($msgNum))
  320:         {
  321:             $cmd = "LIST $msgNum";
  322:             fwrite($fp,"$cmd\r\n");
  323:             $reply = fgets($fp,$this->BUFFER);
  324:             $reply = $this->strip_clf($reply);
  325:             if($this->DEBUG) {
  326:                 @error_log("POP3 SEND [$cmd] GOT [$reply]",0);
  327:             }
  328:             if(!$this->is_ok($reply))
  329:             {
  330:                 $this->ERROR = _("POP3 pop_list:") . ' ' . _("Error ") . "[$reply]";
  331:                 return false;
  332:             }
  333:             list($junk,$num,$size) = explode(" ",$reply);
  334:             return $size;
  335:         }
  336:         $cmd = "LIST";
  337:         $reply = $this->send_cmd($cmd);
  338:         if(!$this->is_ok($reply))
  339:         {
  340:             $reply = $this->strip_clf($reply);
  341:             $this->ERROR = _("POP3 pop_list:") . ' ' . _("Error ") .  "[$reply]";
  342:             return false;
  343:         }
  344:         $MsgArray = array();
  345:         $MsgArray[0] = $Total;
  346:         for($msgC=1;$msgC <= $Total; $msgC++)
  347:         {
  348:             if($msgC > $Total) { break; }
  349:             $line = fgets($fp,$this->BUFFER);
  350:             $line = $this->strip_clf($line);
  351:             if(ereg("^\.",$line))
  352:             {
  353:                 $this->ERROR = _("POP3 pop_list:") . ' ' . _("Premature end of list");
  354:                 return false;
  355:             }
  356:             list($thisMsg,$msgSize) = explode(" ",$line);
  357:             settype($thisMsg,"integer");
  358:             if($thisMsg != $msgC)
  359:             {
  360:                 $MsgArray[$msgC] = "deleted";
  361:             }
  362:             else
  363:             {
  364:                 $MsgArray[$msgC] = $msgSize;
  365:             }
  366:         }
  367:         return $MsgArray;
  368:     }
  369: 
  370:     function get ($msgNum) {
  371:         //  Retrieve the specified msg number. Returns an array
  372:         //  where each line of the msg is an array element.
  373: 
  374:         if(!isset($this->FP))
  375:         {
  376:             $this->ERROR = _("POP3 get:") . ' ' . _("No connection to server");
  377:             return false;
  378:         }
  379: 
  380:         $this->update_timer();
  381: 
  382:         $fp = $this->FP;
  383:         $buffer = $this->BUFFER;
  384:         $cmd = "RETR $msgNum";
  385:         $reply = $this->send_cmd($cmd);
  386: 
  387:         if(!$this->is_ok($reply))
  388:         {
  389:             $this->ERROR = _("POP3 get:") . ' ' . _("Error ") . "[$reply]";
  390:             return false;
  391:         }
  392: 
  393:         $count = 0;
  394:         $MsgArray = array();
  395: 
  396:         $line = fgets($fp,$buffer);
  397:         while ( !ereg("^\.\r\n",$line))
  398:         {
  399:             $MsgArray[$count] = $line;
  400:             $count++;
  401:             $line = fgets($fp,$buffer);
  402:             if(empty($line))    { break; }
  403:         }
  404:         return $MsgArray;
  405:     }
  406: 
  407:     function last ( $type = "count" ) {
  408:         //  Returns the highest msg number in the mailbox.
  409:         //  returns -1 on error, 0+ on success, if type != count
  410:         //  results in a popstat() call (2 element array returned)
  411: 
  412:         $last = -1;
  413:         if(!isset($this->FP))
  414:         {
  415:             $this->ERROR = _("POP3 last:") . ' ' . _("No connection to server");
  416:             return $last;
  417:         }
  418: 
  419:         $reply = $this->send_cmd("STAT");
  420:         if(!$this->is_ok($reply))
  421:         {
  422:             $this->ERROR = _("POP3 last:") . ' ' . _("Error ") . "[$reply]";
  423:             return $last;
  424:         }
  425: 
  426:         $Vars = explode(" ",$reply);
  427:         $count = $Vars[1];
  428:         $size = $Vars[2];
  429:         settype($count,"integer");
  430:         settype($size,"integer");
  431:         if($type != "count")
  432:         {
  433:             return array($count,$size);
  434:         }
  435:         return $count;
  436:     }
  437: 
  438:     function reset () {
  439:         //  Resets the status of the remote server. This includes
  440:         //  resetting the status of ALL msgs to not be deleted.
  441:         //  This method automatically closes the connection to the server.
  442: 
  443:         if(!isset($this->FP))
  444:         {
  445:             $this->ERROR = _("POP3 reset:") . ' ' . _("No connection to server");
  446:             return false;
  447:         }
  448:         $reply = $this->send_cmd("RSET");
  449:         if(!$this->is_ok($reply))
  450:         {
  451:             //  The POP3 RSET command -never- gives a -ERR
  452:             //  response - if it ever does, something truely
  453:             //  wild is going on.
  454: 
  455:             $this->ERROR = _("POP3 reset:") . ' ' . _("Error ") . "[$reply]";
  456:             @error_log("POP3 reset: ERROR [$reply]",0);
  457:         }
  458:         $this->quit();
  459:         return true;
  460:     }
  461: 
  462:     function send_cmd ( $cmd = "" )
  463:     {
  464:         //  Sends a user defined command string to the
  465:         //  POP server and returns the results. Useful for
  466:         //  non-compliant or custom POP servers.
  467:         //  Do NOT includ the \r\n as part of your command
  468:         //  string - it will be appended automatically.
  469: 
  470:         //  The return value is a standard fgets() call, which
  471:         //  will read up to $this->BUFFER bytes of data, until it
  472:         //  encounters a new line, or EOF, whichever happens first.
  473: 
  474:         //  This method works best if $cmd responds with only
  475:         //  one line of data.
  476: 
  477:         if(!isset($this->FP))
  478:         {
  479:             $this->ERROR = _("POP3 send_cmd:") . ' ' . _("No connection to server");
  480:             return false;
  481:         }
  482: 
  483:         if(empty($cmd))
  484:         {
  485:             $this->ERROR = _("POP3 send_cmd:") . ' ' . _("Empty command string");
  486:             return "";
  487:         }
  488: 
  489:         $fp = $this->FP;
  490:         $buffer = $this->BUFFER;
  491:         $this->update_timer();
  492:         fwrite($fp,"$cmd\r\n");
  493:         $reply = fgets($fp,$buffer);
  494:         $reply = $this->strip_clf($reply);
  495:         if($this->DEBUG) { @error_log("POP3 SEND [$cmd] GOT [$reply]",0); }
  496:         return $reply;
  497:     }
  498: 
  499:     function quit() {
  500:         //  Closes the connection to the POP3 server, deleting
  501:         //  any msgs marked as deleted.
  502: 
  503:         if(!isset($this->FP))
  504:         {
  505:             $this->ERROR = _("POP3 quit:") . ' ' . _("connection does not exist");
  506:             return false;
  507:         }
  508:         $fp = $this->FP;
  509:         $cmd = "QUIT";
  510:         fwrite($fp,"$cmd\r\n");
  511:         $reply = fgets($fp,$this->BUFFER);
  512:         $reply = $this->strip_clf($reply);
  513:         if($this->DEBUG) { @error_log("POP3 SEND [$cmd] GOT [$reply]",0); }
  514:         fclose($fp);
  515:         unset($this->FP);
  516:         return true;
  517:     }
  518: 
  519:     function popstat () {
  520:         //  Returns an array of 2 elements. The number of undeleted
  521:         //  msgs in the mailbox, and the size of the mbox in octets.
  522: 
  523:         $PopArray = $this->last("array");
  524: 
  525:         if($PopArray == -1) { return false; }
  526: 
  527:         if( (!$PopArray) or (empty($PopArray)) )
  528:         {
  529:             return false;
  530:         }
  531:         return $PopArray;
  532:     }
  533: 
  534:     function uidl ($msgNum = "")
  535:     {
  536:         //  Returns the UIDL of the msg specified. If called with
  537:         //  no arguments, returns an associative array where each
  538:         //  undeleted msg num is a key, and the msg's uidl is the element
  539:         //  Array element 0 will contain the total number of msgs
  540: 
  541:         if(!isset($this->FP)) {
  542:             $this->ERROR = _("POP3 uidl:") . ' ' . _("No connection to server");
  543:             return false;
  544:         }
  545: 
  546:         $fp = $this->FP;
  547:         $buffer = $this->BUFFER;
  548: 
  549:         if(!empty($msgNum)) {
  550:             $cmd = "UIDL $msgNum";
  551:             $reply = $this->send_cmd($cmd);
  552:             if(!$this->is_ok($reply))
  553:             {
  554:                 $this->ERROR = _("POP3 uidl:") . ' ' . _("Error ") . "[$reply]";
  555:                 return false;
  556:             }
  557:             list ($ok,$num,$myUidl) = explode(" ",$reply);
  558:             return $myUidl;
  559:         } else {
  560:             $this->update_timer();
  561: 
  562:             $UIDLArray = array();
  563:             $Total = $this->COUNT;
  564:             $UIDLArray[0] = $Total;
  565: 
  566:             if ($Total < 1)
  567:             {
  568:                 return $UIDLArray;
  569:             }
  570:             $cmd = "UIDL";
  571:             fwrite($fp, "UIDL\r\n");
  572:             $reply = fgets($fp, $buffer);
  573:             $reply = $this->strip_clf($reply);
  574:             if($this->DEBUG) { @error_log("POP3 SEND [$cmd] GOT [$reply]",0); }
  575:             if(!$this->is_ok($reply))
  576:             {
  577:                 $this->ERROR = _("POP3 uidl:") . ' ' . _("Error ") . "[$reply]";
  578:                 return false;
  579:             }
  580: 
  581:             $line = "";
  582:             $count = 1;
  583:             $line = fgets($fp,$buffer);
  584:             while ( !ereg("^\.\r\n",$line)) {
  585:                 if(ereg("^\.\r\n",$line)) {
  586:                     break;
  587:                 }
  588:                 list ($msg,$msgUidl) = explode(" ",$line);
  589:                 $msgUidl = $this->strip_clf($msgUidl);
  590:                 if($count == $msg) {
  591:                     $UIDLArray[$msg] = $msgUidl;
  592:                 }
  593:                 else
  594:                 {
  595:                     $UIDLArray[$count] = 'deleted';
  596:                 }
  597:                 $count++;
  598:                 $line = fgets($fp,$buffer);
  599:             }
  600:         }
  601:         return $UIDLArray;
  602:     }
  603: 
  604:     function delete ($msgNum = "") {
  605:         //  Flags a specified msg as deleted. The msg will not
  606:         //  be deleted until a quit() method is called.
  607: 
  608:         if(!isset($this->FP))
  609:         {
  610:             $this->ERROR = _("POP3 delete:") . ' ' . _("No connection to server");
  611:             return false;
  612:         }
  613:         if(empty($msgNum))
  614:         {
  615:             $this->ERROR = _("POP3 delete:") . ' ' . _("No msg number submitted");
  616:             return false;
  617:         }
  618:         $reply = $this->send_cmd("DELE $msgNum");
  619:         if(!$this->is_ok($reply))
  620:         {
  621:             $this->ERROR = _("POP3 delete:") . ' ' . _("Command failed ") . "[$reply]";
  622:             return false;
  623:         }
  624:         return true;
  625:     }
  626: 
  627:     //  *********************************************************
  628: 
  629:     //  The following methods are internal to the class.
  630: 
  631:     function is_ok ($cmd = "") {
  632:         //  Return true or false on +OK or -ERR
  633: 
  634:         if( empty($cmd) )
  635:             return false;
  636:         else
  637:             return( ereg ("^\+OK", $cmd ) );
  638:     }
  639: 
  640:     function strip_clf ($text = "") {
  641:         // Strips \r\n from server responses
  642: 
  643:         if(empty($text))
  644:             return $text;
  645:         else {
  646:             $stripped = str_replace("\r",'',$text);
  647:             $stripped = str_replace("\n",'',$stripped);
  648:             return $stripped;
  649:         }
  650:     }
  651: 
  652:     function parse_banner ( $server_text ) {
  653:         $outside = true;
  654:         $banner = "";
  655:         $length = strlen($server_text);
  656:         for($count =0; $count < $length; $count++)
  657:         {
  658:             $digit = substr($server_text,$count,1);
  659:             if(!empty($digit))             {
  660:                 if( (!$outside) && ($digit != '<') && ($digit != '>') )
  661:                 {
  662:                     $banner .= $digit;
  663:                 }
  664:                 if ($digit == '<')
  665:                 {
  666:                     $outside = false;
  667:                 }
  668:                 if($digit == '>')
  669:                 {
  670:                     $outside = true;
  671:                 }
  672:             }
  673:         }
  674:         $banner = $this->strip_clf($banner);    // Just in case
  675:         return "<$banner>";
  676:     }
  677: 
  678: }   // End class
  679: 
  680: ?>

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