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PHP Script  |  2008-03-12  |  5.0 KB  |  176 lines
  1. <?php
  2. /**
  3.  * PemFTP - A Ftp implementation in pure PHP
  4.  *
  5.  * @package PemFTP
  6.  * @since 2.5
  7.  *
  8.  * @version 1.0
  9.  * @copyright Alexey Dotsenko
  10.  * @author Alexey Dotsenko
  11.  * @link http://www.phpclasses.org/browse/package/1743.html Site
  12.  * @license LGPL License http://www.opensource.org/licenses/lgpl-license.html
  13.  */
  14. class ftp extends ftp_base {
  15.  
  16.     function ftp($verb=FALSE, $le=FALSE) {
  17.         $this->__construct($verb, $le);
  18.     }
  19.  
  20.     function __construct($verb=FALSE, $le=FALSE) {
  21.         parent::__construct(false, $verb, $le);
  22.     }
  23.  
  24. // <!-- --------------------------------------------------------------------------------------- -->
  25. // <!--       Private functions                                                                 -->
  26. // <!-- --------------------------------------------------------------------------------------- -->
  27.  
  28.     function _settimeout($sock) {
  29.         if(!@stream_set_timeout($sock, $this->_timeout)) {
  30.             $this->PushError('_settimeout','socket set send timeout');
  31.             $this->_quit();
  32.             return FALSE;
  33.         }
  34.         return TRUE;
  35.     }
  36.  
  37.     function _connect($host, $port) {
  38.         $this->SendMSG("Creating socket");
  39.         $sock = @fsockopen($host, $port, $errno, $errstr, $this->_timeout);
  40.         if (!$sock) {
  41.             $this->PushError('_connect','socket connect failed', $errstr." (".$errno.")");
  42.             return FALSE;
  43.         }
  44.         $this->_connected=true;
  45.         return $sock;
  46.     }
  47.  
  48.     function _readmsg($fnction="_readmsg"){
  49.         if(!$this->_connected) {
  50.             $this->PushError($fnction, 'Connect first');
  51.             return FALSE;
  52.         }
  53.         $result=true;
  54.         $this->_message="";
  55.         $this->_code=0;
  56.         $go=true;
  57.         do {
  58.             $tmp=@fgets($this->_ftp_control_sock, 512);
  59.             if($tmp===false) {
  60.                 $go=$result=false;
  61.                 $this->PushError($fnction,'Read failed');
  62.             } else {
  63.                 $this->_message.=$tmp;
  64.                 if(preg_match("/^([0-9]{3})(-(.*[".CRLF."]{1,2})+\\1)? [^".CRLF."]+[".CRLF."]{1,2}$/", $this->_message, $regs)) $go=false;
  65.             }
  66.         } while($go);
  67.         if($this->LocalEcho) echo "GET < ".rtrim($this->_message, CRLF).CRLF;
  68.         $this->_code=(int)$regs[1];
  69.         return $result;
  70.     }
  71.  
  72.     function _exec($cmd, $fnction="_exec") {
  73.         if(!$this->_ready) {
  74.             $this->PushError($fnction,'Connect first');
  75.             return FALSE;
  76.         }
  77.         if($this->LocalEcho) echo "PUT > ",$cmd,CRLF;
  78.         $status=@fputs($this->_ftp_control_sock, $cmd.CRLF);
  79.         if($status===false) {
  80.             $this->PushError($fnction,'socket write failed');
  81.             return FALSE;
  82.         }
  83.         $this->_lastaction=time();
  84.         if(!$this->_readmsg($fnction)) return FALSE;
  85.         return TRUE;
  86.     }
  87.  
  88.     function _data_prepare($mode=FTP_ASCII) {
  89.         if(!$this->_settype($mode)) return FALSE;
  90.         if($this->_passive) {
  91.             if(!$this->_exec("PASV", "pasv")) {
  92.                 $this->_data_close();
  93.                 return FALSE;
  94.             }
  95.             if(!$this->_checkCode()) {
  96.                 $this->_data_close();
  97.                 return FALSE;
  98.             }
  99.             $ip_port = explode(",", ereg_replace("^.+ \\(?([0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+)\\)?.*".CRLF."$", "\\1", $this->_message));
  100.             $this->_datahost=$ip_port[0].".".$ip_port[1].".".$ip_port[2].".".$ip_port[3];
  101.             $this->_dataport=(((int)$ip_port[4])<<8) + ((int)$ip_port[5]);
  102.             $this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
  103.             $this->_ftp_data_sock=@fsockopen($this->_datahost, $this->_dataport, $errno, $errstr, $this->_timeout);
  104.             if(!$this->_ftp_data_sock) {
  105.                 $this->PushError("_data_prepare","fsockopen fails", $errstr." (".$errno.")");
  106.                 $this->_data_close();
  107.                 return FALSE;
  108.             }
  109.             else $this->_ftp_data_sock;
  110.         } else {
  111.             $this->SendMSG("Only passive connections available!");
  112.             return FALSE;
  113.         }
  114.         return TRUE;
  115.     }
  116.  
  117.     function _data_read($mode=FTP_ASCII, $fp=NULL) {
  118.         if(is_resource($fp)) $out=0;
  119.         else $out="";
  120.         if(!$this->_passive) {
  121.             $this->SendMSG("Only passive connections available!");
  122.             return FALSE;
  123.         }
  124.         while (!feof($this->_ftp_data_sock)) {
  125.             $block=fread($this->_ftp_data_sock, $this->_ftp_buff_size);
  126.             if($mode!=FTP_BINARY) $block=preg_replace("/\r\n|\r|\n/", $this->_eol_code[$this->OS_local], $block);
  127.             if(is_resource($fp)) $out+=fwrite($fp, $block, strlen($block));
  128.             else $out.=$block;
  129.         }
  130.         return $out;
  131.     }
  132.  
  133.     function _data_write($mode=FTP_ASCII, $fp=NULL) {
  134.         if(is_resource($fp)) $out=0;
  135.         else $out="";
  136.         if(!$this->_passive) {
  137.             $this->SendMSG("Only passive connections available!");
  138.             return FALSE;
  139.         }
  140.         if(is_resource($fp)) {
  141.             while(!feof($fp)) {
  142.                 $block=fread($fp, $this->_ftp_buff_size);
  143.                 if(!$this->_data_write_block($mode, $block)) return false;
  144.             }
  145.         } elseif(!$this->_data_write_block($mode, $fp)) return false;
  146.         return TRUE;
  147.     }
  148.  
  149.     function _data_write_block($mode, $block) {
  150.         if($mode!=FTP_BINARY) $block=preg_replace("/\r\n|\r|\n/", $this->_eol_code[$this->OS_remote], $block);
  151.         do {
  152.             if(($t=@fwrite($this->_ftp_data_sock, $block))===FALSE) {
  153.                 $this->PushError("_data_write","Can't write to socket");
  154.                 return FALSE;
  155.             }
  156.             $block=substr($block, $t);
  157.         } while(!empty($block));
  158.         return true;
  159.     }
  160.  
  161.     function _data_close() {
  162.         @fclose($this->_ftp_data_sock);
  163.         $this->SendMSG("Disconnected data from remote host");
  164.         return TRUE;
  165.     }
  166.  
  167.     function _quit($force=FALSE) {
  168.         if($this->_connected or $force) {
  169.             @fclose($this->_ftp_control_sock);
  170.             $this->_connected=false;
  171.             $this->SendMSG("Socket closed");
  172.         }
  173.     }
  174. }
  175. ?>
  176.