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PHP Script  |  2016-08-26  |  5.3 KB  |  187 lines
  1. <?php
  2. /**
  3.  * PemFTP - A Ftp implementation in pure PHP
  4.  *
  5.  * @package PemFTP
  6.  * @since 2.5.0
  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 http://www.opensource.org/licenses/lgpl-license.html
  13.  */
  14.  
  15. /**
  16.  * FTP implementation using fsockopen to connect.
  17.  *
  18.  * @package PemFTP
  19.  * @subpackage Pure
  20.  * @since 2.5.0
  21.  *
  22.  * @version 1.0
  23.  * @copyright Alexey Dotsenko
  24.  * @author Alexey Dotsenko
  25.  * @link http://www.phpclasses.org/browse/package/1743.html Site
  26.  * @license LGPL http://www.opensource.org/licenses/lgpl-license.html
  27.  */
  28. class ftp_pure extends ftp_base {
  29.  
  30.     function __construct($verb=FALSE, $le=FALSE) {
  31.         parent::__construct(false, $verb, $le);
  32.     }
  33.  
  34. // <!-- --------------------------------------------------------------------------------------- -->
  35. // <!--       Private functions                                                                 -->
  36. // <!-- --------------------------------------------------------------------------------------- -->
  37.  
  38.     function _settimeout($sock) {
  39.         if(!@stream_set_timeout($sock, $this->_timeout)) {
  40.             $this->PushError('_settimeout','socket set send timeout');
  41.             $this->_quit();
  42.             return FALSE;
  43.         }
  44.         return TRUE;
  45.     }
  46.  
  47.     function _connect($host, $port) {
  48.         $this->SendMSG("Creating socket");
  49.         $sock = @fsockopen($host, $port, $errno, $errstr, $this->_timeout);
  50.         if (!$sock) {
  51.             $this->PushError('_connect','socket connect failed', $errstr." (".$errno.")");
  52.             return FALSE;
  53.         }
  54.         $this->_connected=true;
  55.         return $sock;
  56.     }
  57.  
  58.     function _readmsg($fnction="_readmsg"){
  59.         if(!$this->_connected) {
  60.             $this->PushError($fnction, 'Connect first');
  61.             return FALSE;
  62.         }
  63.         $result=true;
  64.         $this->_message="";
  65.         $this->_code=0;
  66.         $go=true;
  67.         do {
  68.             $tmp=@fgets($this->_ftp_control_sock, 512);
  69.             if($tmp===false) {
  70.                 $go=$result=false;
  71.                 $this->PushError($fnction,'Read failed');
  72.             } else {
  73.                 $this->_message.=$tmp;
  74.                 if(preg_match("/^([0-9]{3})(-(.*[".CRLF."]{1,2})+\\1)? [^".CRLF."]+[".CRLF."]{1,2}$/", $this->_message, $regs)) $go=false;
  75.             }
  76.         } while($go);
  77.         if($this->LocalEcho) echo "GET < ".rtrim($this->_message, CRLF).CRLF;
  78.         $this->_code=(int)$regs[1];
  79.         return $result;
  80.     }
  81.  
  82.     function _exec($cmd, $fnction="_exec") {
  83.         if(!$this->_ready) {
  84.             $this->PushError($fnction,'Connect first');
  85.             return FALSE;
  86.         }
  87.         if($this->LocalEcho) echo "PUT > ",$cmd,CRLF;
  88.         $status=@fputs($this->_ftp_control_sock, $cmd.CRLF);
  89.         if($status===false) {
  90.             $this->PushError($fnction,'socket write failed');
  91.             return FALSE;
  92.         }
  93.         $this->_lastaction=time();
  94.         if(!$this->_readmsg($fnction)) return FALSE;
  95.         return TRUE;
  96.     }
  97.  
  98.     function _data_prepare($mode=FTP_ASCII) {
  99.         if(!$this->_settype($mode)) return FALSE;
  100.         if($this->_passive) {
  101.             if(!$this->_exec("PASV", "pasv")) {
  102.                 $this->_data_close();
  103.                 return FALSE;
  104.             }
  105.             if(!$this->_checkCode()) {
  106.                 $this->_data_close();
  107.                 return FALSE;
  108.             }
  109.             $ip_port = explode(",", preg_replace("/^.+ \\(?([0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+)\\)?.*$/s", "\\1", $this->_message));
  110.             $this->_datahost=$ip_port[0].".".$ip_port[1].".".$ip_port[2].".".$ip_port[3];
  111.             $this->_dataport=(((int)$ip_port[4])<<8) + ((int)$ip_port[5]);
  112.             $this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
  113.             $this->_ftp_data_sock=@fsockopen($this->_datahost, $this->_dataport, $errno, $errstr, $this->_timeout);
  114.             if(!$this->_ftp_data_sock) {
  115.                 $this->PushError("_data_prepare","fsockopen fails", $errstr." (".$errno.")");
  116.                 $this->_data_close();
  117.                 return FALSE;
  118.             }
  119.             else $this->_ftp_data_sock;
  120.         } else {
  121.             $this->SendMSG("Only passive connections available!");
  122.             return FALSE;
  123.         }
  124.         return TRUE;
  125.     }
  126.  
  127.     function _data_read($mode=FTP_ASCII, $fp=NULL) {
  128.         if(is_resource($fp)) $out=0;
  129.         else $out="";
  130.         if(!$this->_passive) {
  131.             $this->SendMSG("Only passive connections available!");
  132.             return FALSE;
  133.         }
  134.         while (!feof($this->_ftp_data_sock)) {
  135.             $block=fread($this->_ftp_data_sock, $this->_ftp_buff_size);
  136.             if($mode!=FTP_BINARY) $block=preg_replace("/\r\n|\r|\n/", $this->_eol_code[$this->OS_local], $block);
  137.             if(is_resource($fp)) $out+=fwrite($fp, $block, strlen($block));
  138.             else $out.=$block;
  139.         }
  140.         return $out;
  141.     }
  142.  
  143.     function _data_write($mode=FTP_ASCII, $fp=NULL) {
  144.         if(is_resource($fp)) $out=0;
  145.         else $out="";
  146.         if(!$this->_passive) {
  147.             $this->SendMSG("Only passive connections available!");
  148.             return FALSE;
  149.         }
  150.         if(is_resource($fp)) {
  151.             while(!feof($fp)) {
  152.                 $block=fread($fp, $this->_ftp_buff_size);
  153.                 if(!$this->_data_write_block($mode, $block)) return false;
  154.             }
  155.         } elseif(!$this->_data_write_block($mode, $fp)) return false;
  156.         return TRUE;
  157.     }
  158.  
  159.     function _data_write_block($mode, $block) {
  160.         if($mode!=FTP_BINARY) $block=preg_replace("/\r\n|\r|\n/", $this->_eol_code[$this->OS_remote], $block);
  161.         do {
  162.             if(($t=@fwrite($this->_ftp_data_sock, $block))===FALSE) {
  163.                 $this->PushError("_data_write","Can't write to socket");
  164.                 return FALSE;
  165.             }
  166.             $block=substr($block, $t);
  167.         } while(!empty($block));
  168.         return true;
  169.     }
  170.  
  171.     function _data_close() {
  172.         @fclose($this->_ftp_data_sock);
  173.         $this->SendMSG("Disconnected data from remote host");
  174.         return TRUE;
  175.     }
  176.  
  177.     function _quit($force=FALSE) {
  178.         if($this->_connected or $force) {
  179.             @fclose($this->_ftp_control_sock);
  180.             $this->_connected=false;
  181.             $this->SendMSG("Socket closed");
  182.         }
  183.     }
  184. }
  185.  
  186. ?>
  187.