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PHP Script  |  2016-08-26  |  8.3 KB  |  247 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.  * Socket Based FTP implementation
  17.  *
  18.  * @package PemFTP
  19.  * @subpackage Socket
  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_sockets extends ftp_base {
  29.  
  30.     function __construct($verb=FALSE, $le=FALSE) {
  31.         parent::__construct(true, $verb, $le);
  32.     }
  33.  
  34. // <!-- --------------------------------------------------------------------------------------- -->
  35. // <!--       Private functions                                                                 -->
  36. // <!-- --------------------------------------------------------------------------------------- -->
  37.  
  38.     function _settimeout($sock) {
  39.         if(!@socket_set_option($sock, SOL_SOCKET, SO_RCVTIMEO, array("sec"=>$this->_timeout, "usec"=>0))) {
  40.             $this->PushError('_connect','socket set receive timeout',socket_strerror(socket_last_error($sock)));
  41.             @socket_close($sock);
  42.             return FALSE;
  43.         }
  44.         if(!@socket_set_option($sock, SOL_SOCKET , SO_SNDTIMEO, array("sec"=>$this->_timeout, "usec"=>0))) {
  45.             $this->PushError('_connect','socket set send timeout',socket_strerror(socket_last_error($sock)));
  46.             @socket_close($sock);
  47.             return FALSE;
  48.         }
  49.         return true;
  50.     }
  51.  
  52.     function _connect($host, $port) {
  53.         $this->SendMSG("Creating socket");
  54.         if(!($sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) {
  55.             $this->PushError('_connect','socket create failed',socket_strerror(socket_last_error($sock)));
  56.             return FALSE;
  57.         }
  58.         if(!$this->_settimeout($sock)) return FALSE;
  59.         $this->SendMSG("Connecting to \"".$host.":".$port."\"");
  60.         if (!($res = @socket_connect($sock, $host, $port))) {
  61.             $this->PushError('_connect','socket connect failed',socket_strerror(socket_last_error($sock)));
  62.             @socket_close($sock);
  63.             return FALSE;
  64.         }
  65.         $this->_connected=true;
  66.         return $sock;
  67.     }
  68.  
  69.     function _readmsg($fnction="_readmsg"){
  70.         if(!$this->_connected) {
  71.             $this->PushError($fnction,'Connect first');
  72.             return FALSE;
  73.         }
  74.         $result=true;
  75.         $this->_message="";
  76.         $this->_code=0;
  77.         $go=true;
  78.         do {
  79.             $tmp=@socket_read($this->_ftp_control_sock, 4096, PHP_BINARY_READ);
  80.             if($tmp===false) {
  81.                 $go=$result=false;
  82.                 $this->PushError($fnction,'Read failed', socket_strerror(socket_last_error($this->_ftp_control_sock)));
  83.             } else {
  84.                 $this->_message.=$tmp;
  85.                 $go = !preg_match("/^([0-9]{3})(-.+\\1)? [^".CRLF."]+".CRLF."$/Us", $this->_message, $regs);
  86.             }
  87.         } while($go);
  88.         if($this->LocalEcho) echo "GET < ".rtrim($this->_message, CRLF).CRLF;
  89.         $this->_code=(int)$regs[1];
  90.         return $result;
  91.     }
  92.  
  93.     function _exec($cmd, $fnction="_exec") {
  94.         if(!$this->_ready) {
  95.             $this->PushError($fnction,'Connect first');
  96.             return FALSE;
  97.         }
  98.         if($this->LocalEcho) echo "PUT > ",$cmd,CRLF;
  99.         $status=@socket_write($this->_ftp_control_sock, $cmd.CRLF);
  100.         if($status===false) {
  101.             $this->PushError($fnction,'socket write failed', socket_strerror(socket_last_error($this->stream)));
  102.             return FALSE;
  103.         }
  104.         $this->_lastaction=time();
  105.         if(!$this->_readmsg($fnction)) return FALSE;
  106.         return TRUE;
  107.     }
  108.  
  109.     function _data_prepare($mode=FTP_ASCII) {
  110.         if(!$this->_settype($mode)) return FALSE;
  111.         $this->SendMSG("Creating data socket");
  112.         $this->_ftp_data_sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
  113.         if ($this->_ftp_data_sock < 0) {
  114.             $this->PushError('_data_prepare','socket create failed',socket_strerror(socket_last_error($this->_ftp_data_sock)));
  115.             return FALSE;
  116.         }
  117.         if(!$this->_settimeout($this->_ftp_data_sock)) {
  118.             $this->_data_close();
  119.             return FALSE;
  120.         }
  121.         if($this->_passive) {
  122.             if(!$this->_exec("PASV", "pasv")) {
  123.                 $this->_data_close();
  124.                 return FALSE;
  125.             }
  126.             if(!$this->_checkCode()) {
  127.                 $this->_data_close();
  128.                 return FALSE;
  129.             }
  130.             $ip_port = explode(",", preg_replace("/^.+ \\(?([0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+)\\)?.*$/s", "\\1", $this->_message));
  131.             $this->_datahost=$ip_port[0].".".$ip_port[1].".".$ip_port[2].".".$ip_port[3];
  132.             $this->_dataport=(((int)$ip_port[4])<<8) + ((int)$ip_port[5]);
  133.             $this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
  134.             if(!@socket_connect($this->_ftp_data_sock, $this->_datahost, $this->_dataport)) {
  135.                 $this->PushError("_data_prepare","socket_connect", socket_strerror(socket_last_error($this->_ftp_data_sock)));
  136.                 $this->_data_close();
  137.                 return FALSE;
  138.             }
  139.             else $this->_ftp_temp_sock=$this->_ftp_data_sock;
  140.         } else {
  141.             if(!@socket_getsockname($this->_ftp_control_sock, $addr, $port)) {
  142.                 $this->PushError("_data_prepare","can't get control socket information", socket_strerror(socket_last_error($this->_ftp_control_sock)));
  143.                 $this->_data_close();
  144.                 return FALSE;
  145.             }
  146.             if(!@socket_bind($this->_ftp_data_sock,$addr)){
  147.                 $this->PushError("_data_prepare","can't bind data socket", socket_strerror(socket_last_error($this->_ftp_data_sock)));
  148.                 $this->_data_close();
  149.                 return FALSE;
  150.             }
  151.             if(!@socket_listen($this->_ftp_data_sock)) {
  152.                 $this->PushError("_data_prepare","can't listen data socket", socket_strerror(socket_last_error($this->_ftp_data_sock)));
  153.                 $this->_data_close();
  154.                 return FALSE;
  155.             }
  156.             if(!@socket_getsockname($this->_ftp_data_sock, $this->_datahost, $this->_dataport)) {
  157.                 $this->PushError("_data_prepare","can't get data socket information", socket_strerror(socket_last_error($this->_ftp_data_sock)));
  158.                 $this->_data_close();
  159.                 return FALSE;
  160.             }
  161.             if(!$this->_exec('PORT '.str_replace('.',',',$this->_datahost.'.'.($this->_dataport>>8).'.'.($this->_dataport&0x00FF)), "_port")) {
  162.                 $this->_data_close();
  163.                 return FALSE;
  164.             }
  165.             if(!$this->_checkCode()) {
  166.                 $this->_data_close();
  167.                 return FALSE;
  168.             }
  169.         }
  170.         return TRUE;
  171.     }
  172.  
  173.     function _data_read($mode=FTP_ASCII, $fp=NULL) {
  174.         $NewLine=$this->_eol_code[$this->OS_local];
  175.         if(is_resource($fp)) $out=0;
  176.         else $out="";
  177.         if(!$this->_passive) {
  178.             $this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
  179.             $this->_ftp_temp_sock=socket_accept($this->_ftp_data_sock);
  180.             if($this->_ftp_temp_sock===FALSE) {
  181.                 $this->PushError("_data_read","socket_accept", socket_strerror(socket_last_error($this->_ftp_temp_sock)));
  182.                 $this->_data_close();
  183.                 return FALSE;
  184.             }
  185.         }
  186.  
  187.         while(($block=@socket_read($this->_ftp_temp_sock, $this->_ftp_buff_size, PHP_BINARY_READ))!==false) {
  188.             if($block==="") break;
  189.             if($mode!=FTP_BINARY) $block=preg_replace("/\r\n|\r|\n/", $this->_eol_code[$this->OS_local], $block);
  190.             if(is_resource($fp)) $out+=fwrite($fp, $block, strlen($block));
  191.             else $out.=$block;
  192.         }
  193.         return $out;
  194.     }
  195.  
  196.     function _data_write($mode=FTP_ASCII, $fp=NULL) {
  197.         $NewLine=$this->_eol_code[$this->OS_local];
  198.         if(is_resource($fp)) $out=0;
  199.         else $out="";
  200.         if(!$this->_passive) {
  201.             $this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
  202.             $this->_ftp_temp_sock=socket_accept($this->_ftp_data_sock);
  203.             if($this->_ftp_temp_sock===FALSE) {
  204.                 $this->PushError("_data_write","socket_accept", socket_strerror(socket_last_error($this->_ftp_temp_sock)));
  205.                 $this->_data_close();
  206.                 return false;
  207.             }
  208.         }
  209.         if(is_resource($fp)) {
  210.             while(!feof($fp)) {
  211.                 $block=fread($fp, $this->_ftp_buff_size);
  212.                 if(!$this->_data_write_block($mode, $block)) return false;
  213.             }
  214.         } elseif(!$this->_data_write_block($mode, $fp)) return false;
  215.         return true;
  216.     }
  217.  
  218.     function _data_write_block($mode, $block) {
  219.         if($mode!=FTP_BINARY) $block=preg_replace("/\r\n|\r|\n/", $this->_eol_code[$this->OS_remote], $block);
  220.         do {
  221.             if(($t=@socket_write($this->_ftp_temp_sock, $block))===FALSE) {
  222.                 $this->PushError("_data_write","socket_write", socket_strerror(socket_last_error($this->_ftp_temp_sock)));
  223.                 $this->_data_close();
  224.                 return FALSE;
  225.             }
  226.             $block=substr($block, $t);
  227.         } while(!empty($block));
  228.         return true;
  229.     }
  230.  
  231.     function _data_close() {
  232.         @socket_close($this->_ftp_temp_sock);
  233.         @socket_close($this->_ftp_data_sock);
  234.         $this->SendMSG("Disconnected data from remote host");
  235.         return TRUE;
  236.     }
  237.  
  238.     function _quit() {
  239.         if($this->_connected) {
  240.             @socket_close($this->_ftp_control_sock);
  241.             $this->_connected=false;
  242.             $this->SendMSG("Socket closed");
  243.         }
  244.     }
  245. }
  246. ?>
  247.