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   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 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
  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 extends ftp_base {
  29  
  30  	function ftp($verb=FALSE, $le=FALSE) {
  31          $this->__construct($verb, $le);
  32      }
  33  
  34  	function __construct($verb=FALSE, $le=FALSE) {
  35          parent::__construct(true, $verb, $le);
  36      }
  37  
  38  // <!-- --------------------------------------------------------------------------------------- -->
  39  // <!--       Private functions                                                                 -->
  40  // <!-- --------------------------------------------------------------------------------------- -->
  41  
  42  	function _settimeout($sock) {
  43          if(!@socket_set_option($sock, SOL_SOCKET, SO_RCVTIMEO, array("sec"=>$this->_timeout, "usec"=>0))) {
  44              $this->PushError('_connect','socket set receive timeout',socket_strerror(socket_last_error($sock)));
  45              @socket_close($sock);
  46              return FALSE;
  47          }
  48          if(!@socket_set_option($sock, SOL_SOCKET , SO_SNDTIMEO, array("sec"=>$this->_timeout, "usec"=>0))) {
  49              $this->PushError('_connect','socket set send timeout',socket_strerror(socket_last_error($sock)));
  50              @socket_close($sock);
  51              return FALSE;
  52          }
  53          return true;
  54      }
  55  
  56  	function _connect($host, $port) {
  57          $this->SendMSG("Creating socket");
  58          if(!($sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) {
  59              $this->PushError('_connect','socket create failed',socket_strerror(socket_last_error($sock)));
  60              return FALSE;
  61          }
  62          if(!$this->_settimeout($sock)) return FALSE;
  63          $this->SendMSG("Connecting to \"".$host.":".$port."\"");
  64          if (!($res = @socket_connect($sock, $host, $port))) {
  65              $this->PushError('_connect','socket connect failed',socket_strerror(socket_last_error($sock)));
  66              @socket_close($sock);
  67              return FALSE;
  68          }
  69          $this->_connected=true;
  70          return $sock;
  71      }
  72  
  73  	function _readmsg($fnction="_readmsg"){
  74          if(!$this->_connected) {
  75              $this->PushError($fnction,'Connect first');
  76              return FALSE;
  77          }
  78          $result=true;
  79          $this->_message="";
  80          $this->_code=0;
  81          $go=true;
  82          do {
  83              $tmp=@socket_read($this->_ftp_control_sock, 4096, PHP_BINARY_READ);
  84              if($tmp===false) {
  85                  $go=$result=false;
  86                  $this->PushError($fnction,'Read failed', socket_strerror(socket_last_error($this->_ftp_control_sock)));
  87              } else {
  88                  $this->_message.=$tmp;
  89                  $go = !preg_match("/^([0-9]{3})(-.+\\1)? [^".CRLF."]+".CRLF."$/Us", $this->_message, $regs);
  90              }
  91          } while($go);
  92          if($this->LocalEcho) echo "GET < ".rtrim($this->_message, CRLF).CRLF;
  93          $this->_code=(int)$regs[1];
  94          return $result;
  95      }
  96  
  97  	function _exec($cmd, $fnction="_exec") {
  98          if(!$this->_ready) {
  99              $this->PushError($fnction,'Connect first');
 100              return FALSE;
 101          }
 102          if($this->LocalEcho) echo "PUT > ",$cmd,CRLF;
 103          $status=@socket_write($this->_ftp_control_sock, $cmd.CRLF);
 104          if($status===false) {
 105              $this->PushError($fnction,'socket write failed', socket_strerror(socket_last_error($this->stream)));
 106              return FALSE;
 107          }
 108          $this->_lastaction=time();
 109          if(!$this->_readmsg($fnction)) return FALSE;
 110          return TRUE;
 111      }
 112  
 113  	function _data_prepare($mode=FTP_ASCII) {
 114          if(!$this->_settype($mode)) return FALSE;
 115          $this->SendMSG("Creating data socket");
 116          $this->_ftp_data_sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
 117          if ($this->_ftp_data_sock < 0) {
 118              $this->PushError('_data_prepare','socket create failed',socket_strerror(socket_last_error($this->_ftp_data_sock)));
 119              return FALSE;
 120          }
 121          if(!$this->_settimeout($this->_ftp_data_sock)) {
 122              $this->_data_close();
 123              return FALSE;
 124          }
 125          if($this->_passive) {
 126              if(!$this->_exec("PASV", "pasv")) {
 127                  $this->_data_close();
 128                  return FALSE;
 129              }
 130              if(!$this->_checkCode()) {
 131                  $this->_data_close();
 132                  return FALSE;
 133              }
 134              $ip_port = explode(",", ereg_replace("^.+ \\(?([0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+)\\)?.*".CRLF."$", "\\1", $this->_message));
 135              $this->_datahost=$ip_port[0].".".$ip_port[1].".".$ip_port[2].".".$ip_port[3];
 136              $this->_dataport=(((int)$ip_port[4])<<8) + ((int)$ip_port[5]);
 137              $this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
 138              if(!@socket_connect($this->_ftp_data_sock, $this->_datahost, $this->_dataport)) {
 139                  $this->PushError("_data_prepare","socket_connect", socket_strerror(socket_last_error($this->_ftp_data_sock)));
 140                  $this->_data_close();
 141                  return FALSE;
 142              }
 143              else $this->_ftp_temp_sock=$this->_ftp_data_sock;
 144          } else {
 145              if(!@socket_getsockname($this->_ftp_control_sock, $addr, $port)) {
 146                  $this->PushError("_data_prepare","can't get control socket information", socket_strerror(socket_last_error($this->_ftp_control_sock)));
 147                  $this->_data_close();
 148                  return FALSE;
 149              }
 150              if(!@socket_bind($this->_ftp_data_sock,$addr)){
 151                  $this->PushError("_data_prepare","can't bind data socket", socket_strerror(socket_last_error($this->_ftp_data_sock)));
 152                  $this->_data_close();
 153                  return FALSE;
 154              }
 155              if(!@socket_listen($this->_ftp_data_sock)) {
 156                  $this->PushError("_data_prepare","can't listen data socket", socket_strerror(socket_last_error($this->_ftp_data_sock)));
 157                  $this->_data_close();
 158                  return FALSE;
 159              }
 160              if(!@socket_getsockname($this->_ftp_data_sock, $this->_datahost, $this->_dataport)) {
 161                  $this->PushError("_data_prepare","can't get data socket information", socket_strerror(socket_last_error($this->_ftp_data_sock)));
 162                  $this->_data_close();
 163                  return FALSE;
 164              }
 165              if(!$this->_exec('PORT '.str_replace('.',',',$this->_datahost.'.'.($this->_dataport>>8).'.'.($this->_dataport&0x00FF)), "_port")) {
 166                  $this->_data_close();
 167                  return FALSE;
 168              }
 169              if(!$this->_checkCode()) {
 170                  $this->_data_close();
 171                  return FALSE;
 172              }
 173          }
 174          return TRUE;
 175      }
 176  
 177  	function _data_read($mode=FTP_ASCII, $fp=NULL) {
 178          $NewLine=$this->_eol_code[$this->OS_local];
 179          if(is_resource($fp)) $out=0;
 180          else $out="";
 181          if(!$this->_passive) {
 182              $this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
 183              $this->_ftp_temp_sock=socket_accept($this->_ftp_data_sock);
 184              if($this->_ftp_temp_sock===FALSE) {
 185                  $this->PushError("_data_read","socket_accept", socket_strerror(socket_last_error($this->_ftp_temp_sock)));
 186                  $this->_data_close();
 187                  return FALSE;
 188              }
 189          }
 190  
 191          while(($block=@socket_read($this->_ftp_temp_sock, $this->_ftp_buff_size, PHP_BINARY_READ))!==false) {
 192              if($block==="") break;
 193              if($mode!=FTP_BINARY) $block=preg_replace("/\r\n|\r|\n/", $this->_eol_code[$this->OS_local], $block);
 194              if(is_resource($fp)) $out+=fwrite($fp, $block, strlen($block));
 195              else $out.=$block;
 196          }
 197          return $out;
 198      }
 199  
 200  	function _data_write($mode=FTP_ASCII, $fp=NULL) {
 201          $NewLine=$this->_eol_code[$this->OS_local];
 202          if(is_resource($fp)) $out=0;
 203          else $out="";
 204          if(!$this->_passive) {
 205              $this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
 206              $this->_ftp_temp_sock=socket_accept($this->_ftp_data_sock);
 207              if($this->_ftp_temp_sock===FALSE) {
 208                  $this->PushError("_data_write","socket_accept", socket_strerror(socket_last_error($this->_ftp_temp_sock)));
 209                  $this->_data_close();
 210                  return false;
 211              }
 212          }
 213          if(is_resource($fp)) {
 214              while(!feof($fp)) {
 215                  $block=fread($fp, $this->_ftp_buff_size);
 216                  if(!$this->_data_write_block($mode, $block)) return false;
 217              }
 218          } elseif(!$this->_data_write_block($mode, $fp)) return false;
 219          return true;
 220      }
 221  
 222  	function _data_write_block($mode, $block) {
 223          if($mode!=FTP_BINARY) $block=preg_replace("/\r\n|\r|\n/", $this->_eol_code[$this->OS_remote], $block);
 224          do {
 225              if(($t=@socket_write($this->_ftp_temp_sock, $block))===FALSE) {
 226                  $this->PushError("_data_write","socket_write", socket_strerror(socket_last_error($this->_ftp_temp_sock)));
 227                  $this->_data_close();
 228                  return FALSE;
 229              }
 230              $block=substr($block, $t);
 231          } while(!empty($block));
 232          return true;
 233      }
 234  
 235  	function _data_close() {
 236          @socket_close($this->_ftp_temp_sock);
 237          @socket_close($this->_ftp_data_sock);
 238          $this->SendMSG("Disconnected data from remote host");
 239          return TRUE;
 240      }
 241  
 242  	function _quit() {
 243          if($this->_connected) {
 244              @socket_close($this->_ftp_control_sock);
 245              $this->_connected=false;
 246              $this->SendMSG("Socket closed");
 247          }
 248      }
 249  }
 250  ?>