<form method="POST">
    <h3>Editing: class-ftp-sockets.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php
/**
 * PemFTP - An Ftp implementation in pure PHP
 *
 * @package PemFTP
 * @since 2.5.0
 *
 * @version 1.0
 * @copyright Alexey Dotsenko
 * @author Alexey Dotsenko
 * @link https://www.phpclasses.org/package/1743-PHP-FTP-client-in-pure-PHP.html
 * @license LGPL https://opensource.org/licenses/lgpl-license.html
 */

/**
 * Socket Based FTP implementation
 *
 * @package PemFTP
 * @subpackage Socket
 * @since 2.5.0
 *
 * @version 1.0
 * @copyright Alexey Dotsenko
 * @author Alexey Dotsenko
 * @link https://www.phpclasses.org/package/1743-PHP-FTP-client-in-pure-PHP.html
 * @license LGPL https://opensource.org/licenses/lgpl-license.html
 */
class ftp_sockets extends ftp_base {

	function __construct($verb=FALSE, $le=FALSE) {
		parent::__construct(true, $verb, $le);
	}

// &lt;!-- --------------------------------------------------------------------------------------- --&gt;
// &lt;!--       Private functions                                                                 --&gt;
// &lt;!-- --------------------------------------------------------------------------------------- --&gt;

	function _settimeout($sock) {
		if(!@socket_set_option($sock, SOL_SOCKET, SO_RCVTIMEO, array(&quot;sec&quot;=&gt;$this-&gt;_timeout, &quot;usec&quot;=&gt;0))) {
			$this-&gt;PushError('_connect','socket set receive timeout',socket_strerror(socket_last_error($sock)));
			@socket_close($sock);
			return FALSE;
		}
		if(!@socket_set_option($sock, SOL_SOCKET , SO_SNDTIMEO, array(&quot;sec&quot;=&gt;$this-&gt;_timeout, &quot;usec&quot;=&gt;0))) {
			$this-&gt;PushError('_connect','socket set send timeout',socket_strerror(socket_last_error($sock)));
			@socket_close($sock);
			return FALSE;
		}
		return true;
	}

	function _connect($host, $port) {
		$this-&gt;SendMSG(&quot;Creating socket&quot;);
		if(!($sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) {
			$this-&gt;PushError('_connect','socket create failed',socket_strerror(socket_last_error($sock)));
			return FALSE;
		}
		if(!$this-&gt;_settimeout($sock)) return FALSE;
		$this-&gt;SendMSG(&quot;Connecting to \&quot;&quot;.$host.&quot;:&quot;.$port.&quot;\&quot;&quot;);
		if (!($res = @socket_connect($sock, $host, $port))) {
			$this-&gt;PushError('_connect','socket connect failed',socket_strerror(socket_last_error($sock)));
			@socket_close($sock);
			return FALSE;
		}
		$this-&gt;_connected=true;
		return $sock;
	}

	function _readmsg($fnction=&quot;_readmsg&quot;){
		if(!$this-&gt;_connected) {
			$this-&gt;PushError($fnction,'Connect first');
			return FALSE;
		}
		$result=true;
		$this-&gt;_message=&quot;&quot;;
		$this-&gt;_code=0;
		$go=true;
		do {
			$tmp=@socket_read($this-&gt;_ftp_control_sock, 4096, PHP_BINARY_READ);
			if($tmp===false) {
				$go=$result=false;
				$this-&gt;PushError($fnction,'Read failed', socket_strerror(socket_last_error($this-&gt;_ftp_control_sock)));
			} else {
				$this-&gt;_message.=$tmp;
				$go = !preg_match(&quot;/^([0-9]{3})(-.+\\1)? [^&quot;.CRLF.&quot;]+&quot;.CRLF.&quot;$/Us&quot;, $this-&gt;_message, $regs);
			}
		} while($go);
		if($this-&gt;LocalEcho) echo &quot;GET &lt; &quot;.rtrim($this-&gt;_message, CRLF).CRLF;
		$this-&gt;_code=(int)$regs[1];
		return $result;
	}

	function _exec($cmd, $fnction=&quot;_exec&quot;) {
		if(!$this-&gt;_ready) {
			$this-&gt;PushError($fnction,'Connect first');
			return FALSE;
		}
		if($this-&gt;LocalEcho) echo &quot;PUT &gt; &quot;,$cmd,CRLF;
		$status=@socket_write($this-&gt;_ftp_control_sock, $cmd.CRLF);
		if($status===false) {
			$this-&gt;PushError($fnction,'socket write failed', socket_strerror(socket_last_error($this-&gt;stream)));
			return FALSE;
		}
		$this-&gt;_lastaction=time();
		if(!$this-&gt;_readmsg($fnction)) return FALSE;
		return TRUE;
	}

	function _data_prepare($mode=FTP_ASCII) {
		if(!$this-&gt;_settype($mode)) return FALSE;
		$this-&gt;SendMSG(&quot;Creating data socket&quot;);
		$this-&gt;_ftp_data_sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
		if ($this-&gt;_ftp_data_sock &lt; 0) {
			$this-&gt;PushError('_data_prepare','socket create failed',socket_strerror(socket_last_error($this-&gt;_ftp_data_sock)));
			return FALSE;
		}
		if(!$this-&gt;_settimeout($this-&gt;_ftp_data_sock)) {
			$this-&gt;_data_close();
			return FALSE;
		}
		if($this-&gt;_passive) {
			if(!$this-&gt;_exec(&quot;PASV&quot;, &quot;pasv&quot;)) {
				$this-&gt;_data_close();
				return FALSE;
			}
			if(!$this-&gt;_checkCode()) {
				$this-&gt;_data_close();
				return FALSE;
			}
			$ip_port = explode(&quot;,&quot;, preg_replace(&quot;/^.+ \\(?([0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+)\\)?.*$/s&quot;, &quot;\\1&quot;, $this-&gt;_message));
			$this-&gt;_datahost=$ip_port[0].&quot;.&quot;.$ip_port[1].&quot;.&quot;.$ip_port[2].&quot;.&quot;.$ip_port[3];
			$this-&gt;_dataport=(((int)$ip_port[4])&lt;&lt;8) + ((int)$ip_port[5]);
			$this-&gt;SendMSG(&quot;Connecting to &quot;.$this-&gt;_datahost.&quot;:&quot;.$this-&gt;_dataport);
			if(!@socket_connect($this-&gt;_ftp_data_sock, $this-&gt;_datahost, $this-&gt;_dataport)) {
				$this-&gt;PushError(&quot;_data_prepare&quot;,&quot;socket_connect&quot;, socket_strerror(socket_last_error($this-&gt;_ftp_data_sock)));
				$this-&gt;_data_close();
				return FALSE;
			}
			else $this-&gt;_ftp_temp_sock=$this-&gt;_ftp_data_sock;
		} else {
			if(!@socket_getsockname($this-&gt;_ftp_control_sock, $addr, $port)) {
				$this-&gt;PushError(&quot;_data_prepare&quot;,&quot;cannot get control socket information&quot;, socket_strerror(socket_last_error($this-&gt;_ftp_control_sock)));
				$this-&gt;_data_close();
				return FALSE;
			}
			if(!@socket_bind($this-&gt;_ftp_data_sock,$addr)){
				$this-&gt;PushError(&quot;_data_prepare&quot;,&quot;cannot bind data socket&quot;, socket_strerror(socket_last_error($this-&gt;_ftp_data_sock)));
				$this-&gt;_data_close();
				return FALSE;
			}
			if(!@socket_listen($this-&gt;_ftp_data_sock)) {
				$this-&gt;PushError(&quot;_data_prepare&quot;,&quot;cannot listen data socket&quot;, socket_strerror(socket_last_error($this-&gt;_ftp_data_sock)));
				$this-&gt;_data_close();
				return FALSE;
			}
			if(!@socket_getsockname($this-&gt;_ftp_data_sock, $this-&gt;_datahost, $this-&gt;_dataport)) {
				$this-&gt;PushError(&quot;_data_prepare&quot;,&quot;cannot get data socket information&quot;, socket_strerror(socket_last_error($this-&gt;_ftp_data_sock)));
				$this-&gt;_data_close();
				return FALSE;
			}
			if(!$this-&gt;_exec('PORT '.str_replace('.',',',$this-&gt;_datahost.'.'.($this-&gt;_dataport&gt;&gt;8).'.'.($this-&gt;_dataport&amp;0x00FF)), &quot;_port&quot;)) {
				$this-&gt;_data_close();
				return FALSE;
			}
			if(!$this-&gt;_checkCode()) {
				$this-&gt;_data_close();
				return FALSE;
			}
		}
		return TRUE;
	}

	function _data_read($mode=FTP_ASCII, $fp=NULL) {
		$NewLine=$this-&gt;_eol_code[$this-&gt;OS_local];
		if(is_resource($fp)) $out=0;
		else $out=&quot;&quot;;
		if(!$this-&gt;_passive) {
			$this-&gt;SendMSG(&quot;Connecting to &quot;.$this-&gt;_datahost.&quot;:&quot;.$this-&gt;_dataport);
			$this-&gt;_ftp_temp_sock=socket_accept($this-&gt;_ftp_data_sock);
			if($this-&gt;_ftp_temp_sock===FALSE) {
				$this-&gt;PushError(&quot;_data_read&quot;,&quot;socket_accept&quot;, socket_strerror(socket_last_error($this-&gt;_ftp_temp_sock)));
				$this-&gt;_data_close();
				return FALSE;
			}
		}

		while(($block=@socket_read($this-&gt;_ftp_temp_sock, $this-&gt;_ftp_buff_size, PHP_BINARY_READ))!==false) {
			if($block===&quot;&quot;) break;
			if($mode!=FTP_BINARY) $block=preg_replace(&quot;/\r\n|\r|\n/&quot;, $this-&gt;_eol_code[$this-&gt;OS_local], $block);
			if(is_resource($fp)) $out+=fwrite($fp, $block, strlen($block));
			else $out.=$block;
		}
		return $out;
	}

	function _data_write($mode=FTP_ASCII, $fp=NULL) {
		$NewLine=$this-&gt;_eol_code[$this-&gt;OS_local];
		if(is_resource($fp)) $out=0;
		else $out=&quot;&quot;;
		if(!$this-&gt;_passive) {
			$this-&gt;SendMSG(&quot;Connecting to &quot;.$this-&gt;_datahost.&quot;:&quot;.$this-&gt;_dataport);
			$this-&gt;_ftp_temp_sock=socket_accept($this-&gt;_ftp_data_sock);
			if($this-&gt;_ftp_temp_sock===FALSE) {
				$this-&gt;PushError(&quot;_data_write&quot;,&quot;socket_accept&quot;, socket_strerror(socket_last_error($this-&gt;_ftp_temp_sock)));
				$this-&gt;_data_close();
				return false;
			}
		}
		if(is_resource($fp)) {
			while(!feof($fp)) {
				$block=fread($fp, $this-&gt;_ftp_buff_size);
				if(!$this-&gt;_data_write_block($mode, $block)) return false;
			}
		} elseif(!$this-&gt;_data_write_block($mode, $fp)) return false;
		return true;
	}

	function _data_write_block($mode, $block) {
		if($mode!=FTP_BINARY) $block=preg_replace(&quot;/\r\n|\r|\n/&quot;, $this-&gt;_eol_code[$this-&gt;OS_remote], $block);
		do {
			if(($t=@socket_write($this-&gt;_ftp_temp_sock, $block))===FALSE) {
				$this-&gt;PushError(&quot;_data_write&quot;,&quot;socket_write&quot;, socket_strerror(socket_last_error($this-&gt;_ftp_temp_sock)));
				$this-&gt;_data_close();
				return FALSE;
			}
			$block=substr($block, $t);
		} while(!empty($block));
		return true;
	}

	function _data_close() {
		@socket_close($this-&gt;_ftp_temp_sock);
		@socket_close($this-&gt;_ftp_data_sock);
		$this-&gt;SendMSG(&quot;Disconnected data from remote host&quot;);
		return TRUE;
	}

	function _quit() {
		if($this-&gt;_connected) {
			@socket_close($this-&gt;_ftp_control_sock);
			$this-&gt;_connected=false;
			$this-&gt;SendMSG(&quot;Socket closed&quot;);
		}
	}
}
?&gt;
</textarea><br>
    <input type="submit" value="Save">
</form>