wp-admin/includes/class-ftp-pure.php

   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 ?>