<?php
	//http://phpclasses.dknss.com/browse/package/3174.html
	define("FTP_TIMEOUT",10);

	// FTP Statuscodes
	define("FTP_COMMAND_OK",200);
	define("FTP_FILE_ACTION_OK",250);
	define("FTP_FILE_TRANSFER_OK",226);
	define("FTP_COMMAND_NOT_IMPLEMENTED",502);
	define("FTP_FILE_STATUS",213);
	define("FTP_NAME_SYSTEM_TYPE",215);
	define("FTP_PASSIVE_MODE",227);
	define("FTP_PATHNAME",257);
	define("FTP_SERVICE_READY",220);
	define("FTP_USER_LOGGED_IN",230);
	define("FTP_PASSWORD_NEEDED",331);
	define("FTP_USER_NOT_LOGGED_IN",530);
	
	if (!defined("FTP_ASCII")) define("FTP_ASCII",0);
	if (!defined("FTP_BINARY")) define("FTP_BINARY",1);

	class FTP {

		var $passiveMode = TRUE;
		var $lastLines = array();
		var $lastLine = "";
		var $controlSocket = NULL;
		var $newResult = FALSE;
		var $lastResult = -1;
		var $pasvAddr = NULL; 
		
		var $error_no = NULL;
		var $error_msg = NULL;
		
		function FTP() {
		}

		function connect($host, $port=21, $timeout=FTP_TIMEOUT) { //Opens an FTP connection
			$this->_resetError();

			$err_no = 0;
			$err_msg = "";
			$this->controlSocket = @fsockopen($host, $port, $err_no, $err_msg, $timeout) or $this->_setError(-1,"fsockopen failed"); 
			if ($err_no<>0) $this->setError($err_no,$err_msg);

			if ($this->_isError()) return false;
			
			@socket_set_timeout($this->controlSocket,$timeout) or $this->_setError(-1,"socket_set_timeout failed");
			if ($this->_isError()) return false;
			
			$this->_waitForResult();
			if ($this->_isError()) return false;
			
			return $this->getLastResult() == FTP_SERVICE_READY;
		}
		
		function isConnected() {
			return $this->controlSocket != NULL;
		}
		
		function disconnect() {
			if (!$this->isConnected()) return;
			@fclose($this->controlSocket);
		}

		function close() { //Closes an FTP connection
			$this->disconnect();
		}
		
		function login($user, $pass) {  //Logs in to an FTP connection
			$this->_resetError();

			$this->_printCommand("USER $user");
			if ($this->_isError()) return false;

			$this->_waitForResult();
			if ($this->_isError()) return false;

			if ($this->getLastResult() == FTP_PASSWORD_NEEDED){
				$this->_printCommand("PASS $pass");
				if ($this->_isError()) return FALSE;

				$this->_waitForResult();
				if ($this->_isError()) return FALSE;
			}
			
			$result = $this->getLastResult() == FTP_USER_LOGGED_IN;
			return $result;
		}

		function cdup() { //Changes to the parent directory
			$this->_resetError();

			$this->_printCommand("CDUP");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			return ($lr==FTP_FILE_ACTION_OK || $lr==FTP_COMMAND_OK);
		}
		
		function cwd($path) {
			$this->_resetError();

			$this->_printCommand("CWD $path");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			return ($lr==FTP_FILE_ACTION_OK || $lr==FTP_COMMAND_OK);
		}

		function cd($path) {
			return $this->cwd($path);
		}

		function chdir($path) { //Changes directories on a FTP server
			return $this->cwd($path);
		}

		function chmod($mode,$filename) { //Set permissions on a file via FTP
			return $this->site("CHMOD $mode $filename");
		}

		function delete($filename) { //Deletes a file on the FTP server
			$this->_resetError();

			$this->_printCommand("DELE $filename");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			return ($lr==FTP_FILE_ACTION_OK || $lr==FTP_COMMAND_OK);
		}

		function exec($cmd) { //Requests execution of a program on the FTP server
			return $this->site("EXEC $cmd");
		}

		function fget($fp,$remote,$mode=FTP_BINARY,$resumepos=0) { //Downloads a file from the FTP server and saves to an open file
			$this->_resetError();
			
			$type = "I";
			if ($mode==FTP_ASCII) $type = "A";
			
			$this->_printCommand("TYPE $type");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			
			$result = $this->_download("RETR $remote");
			if ($result) {
				fwrite($fp,$result);
			}
			return $result;
		}

		function fput($remote,$resource,$mode=FTP_BINARY,$startpos=0) { //Uploads from an open file to the FTP server
			$this->_resetError();
			
			$type = "I";
			if ($mode==FTP_ASCII) $type = "A";
			
			$this->_printCommand("TYPE $type");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			
			if ($startpos>0) fseek($resource,$startpos);
			$result = $this->_uploadResource("STOR $remote",$resource);
			return $result;
		}

		function get_option($option) { //Retrieves various runtime behaviours of the current FTP stream
			$this->_resetError();

			switch ($option) {
				case "FTP_TIMEOUT_SEC" : return FTP_TIMEOUT;
				case "PHP_FTP_OPT_AUTOSEEK" : return FALSE;
			}
			setError(-1,"Unknown option: $option");
			return false;
		}

		function get($locale,$remote,$mode=FTP_BINARY,$resumepos=0) { //Downloads a file from the FTP server
			if (!($fp = @fopen($locale,"wb"))) return FALSE;
			$result = $this->fget($fp,$remote,$mode,$resumepos);
			@fclose($fp);
			if (!$result) @unlink($locale);
			return $result;
		}
		function mdtm($name) { //Returns the last modified time of the given file
			$this->_resetError();

			$this->_printCommand("MDTM $name");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			if ($lr!=FTP_FILE_STATUS) return FALSE;
			$subject = trim(substr($this->lastLine,4));
			$lucifer = array();
			if (preg_match("/([0-9][0-9][0-9][0-9])([0-9][0-9])([0-9][0-9])([0-9][0-9])([0-9][0-9])([0-9][0-9])/",$subject,$lucifer))
				return mktime($lucifer[4],$lucifer[5],$lucifer[6],$lucifer[2],$lucifer[3],$lucifer[1],0);
			return FALSE;
		}

		function mkdir($name) { //Creates a directory
			$this->_resetError();

			$this->_printCommand("MKD $name");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			return ($lr==FTP_PATHNAME || $lr==FTP_FILE_ACTION_OK || $lr==FTP_COMMAND_OK);
		}

		function nb_continue() { //Continues retrieving/sending a file (non-blocking)
			$this->_resetError();
			// todo
		}

		function nb_fget() { //Retrieves a file from the FTP server and writes it to an open file (non-blocking)
			$this->_resetError();
			// todo
		}

		function nb_fput() { //Stores a file from an open file to the FTP server (non-blocking)
			$this->_resetError();
			// todo
		}

		function nb_get() { //Retrieves a file from the FTP server and writes it to a local file (non-blocking)
			$this->_resetError();
			// todo
		}

		function nb_put() { //Stores a file on the FTP server (non-blocking)
			$this->_resetError();
			// todo
		}

		function nlist($remote_filespec="") { //Returns a list of files in the given directory
			$this->_resetError();
			$result = $this->_download(trim("NLST $remote_filespec"));
			return ($result !== FALSE) ? explode("\n",str_replace("\r","",trim($result))) : $result;
		}
		
		function pasv($pasv) { //Turns passive mode on or off
			if (!$pasv) {
				$this->_setError("Active (PORT) mode is not supported");
				return false;
			}
			return true;
		}

		function put($remote,$local,$mode=FTP_BINARY,$startpos=0) { //Uploads a file to the FTP server
			if (!($fp = @fopen($local,"rb"))) return FALSE;
			$result = $this->fput($remote,$fp,$mode,$startpos);
			@fclose($fp);
			return $result;
		}

		function pwd() { //Returns the current directory name
			$this->_resetError();

			$this->_printCommand("PWD");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			if ($lr!=FTP_PATHNAME) return FALSE;
			$subject = trim(substr($this->lastLine,4));
			$lucifer = array();
			if (preg_match("/\"(.*)\"/",$subject,$lucifer)) return $lucifer[1];
			return FALSE;
		}

		function quit() { //Alias of close
			$this->close();
		}

		function raw($cmd) { //Sends an arbitrary command to an FTP server
			$this->_resetError();

			$this->_printCommand($cmd);
			$this->_waitForResult();
			$this->getLastResult();
			return array($this->lastLine);
		}

		function rawlist($remote_filespec="") { //Returns a detailed list of files in the given directory
			$this->_resetError();
			$result = $this->_download(trim("LIST $remote_filespec"));
			return ($result !== FALSE) ? explode("\n",str_replace("\r","",trim($result))) : $result;
		}
		
		function ls($remote_filespec="") { //Returns a parsed rawlist in an assoc array
			$a = $this->rawlist($remote_filespec);
			if (!$a) return $a;
			$systype = $this->systype();
			$is_windows = stristr($systype,"WIN")!==FALSE;
			$b = array();
			while (list($i,$line) = each($a)) {
				if ($is_windows && preg_match("/([0-9]{2})-([0-9]{2})-([0-9]{2}) +([0-9]{2}):([0-9]{2})(AM|PM) +([0-9]+|<DIR>) +(.+)/",$line,$lucifer)) {
					$b[$i] = array();
					if ($lucifer[3]<70) { $lucifer[3]+=2000; } else { $lucifer[3]+=1900; } // 4digit year fix
					$b[$i]['isdir'] = ($lucifer[7]=="<DIR>");
					$b[$i]['size'] = $lucifer[7];
					$b[$i]['month'] = $lucifer[1];
					$b[$i]['day'] = $lucifer[2];
					$b[$i]['year'] = $lucifer[3];
					$b[$i]['hour'] = $lucifer[4];
					$b[$i]['minute'] = $lucifer[5];
					$b[$i]['time'] = @mktime($lucifer[4]+(strcasecmp($lucifer[6],"PM")==0?12:0),$lucifer[5],0,$lucifer[1],$lucifer[2],$lucifer[3]);
					$b[$i]['am/pm'] = $lucifer[6];
					$b[$i]['name'] = $lucifer[8];
				} else if (!$is_windows && $lucifer=preg_split("/[ ]/",$line,9,PREG_SPLIT_NO_EMPTY)) {
					echo $line."\n";
					$lcount=count($lucifer);
					if ($lcount<8) continue;
					$b[$i] = array();
					$b[$i]['isdir'] = $lucifer[0]{0} === "d";
					$b[$i]['islink'] = $lucifer[0]{0} === "l";
					$b[$i]['perms'] = $lucifer[0];
					$b[$i]['number'] = $lucifer[1];
					$b[$i]['owner'] = $lucifer[2];
					$b[$i]['group'] = $lucifer[3];
					$b[$i]['size'] = $lucifer[4];
					if ($lcount==8) {
						sscanf($lucifer[5],"%d-%d-%d",$b[$i]['year'],$b[$i]['month'],$b[$i]['day']);
						sscanf($lucifer[6],"%d:%d",$b[$i]['hour'],$b[$i]['minute']);
						$b[$i]['time'] = @mktime($b[$i]['hour'],$b[$i]['minute'],0,$b[$i]['month'],$b[$i]['day'],$b[$i]['year']);
						$b[$i]['name'] = $lucifer[7];
					} else {
						$b[$i]['month'] = $lucifer[5];
						$b[$i]['day'] = $lucifer[6];
						if (preg_match("/([0-9]{2}):([0-9]{2})/",$lucifer[7],$l2)) {
							$b[$i]['year'] = date("Y");
							$b[$i]['hour'] = $l2[1];
							$b[$i]['minute'] = $l2[2];
						} else {
							$b[$i]['year'] = $lucifer[7];
							$b[$i]['hour'] = 0;
							$b[$i]['minute'] = 0;
						}
						$b[$i]['time'] = strtotime(sprintf("%d %s %d %02d:%02d",$b[$i]['day'],$b[$i]['month'],$b[$i]['year'],$b[$i]['hour'],$b[$i]['minute']));
						$b[$i]['name'] = $lucifer[8];
					}
				}
			}
			return $b;
		}

		function rename($from,$to) { //Renames a file on the FTP server
			$this->_resetError();

			$this->_printCommand("RNFR $from");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			$this->_printCommand("RNTO $to");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			return ($lr==FTP_FILE_ACTION_OK || $lr==FTP_COMMAND_OK);
		}

		function rmdir($name) { //Removes a directory
			$this->_resetError();

			$this->_printCommand("RMD $name");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			return ($lr==FTP_FILE_ACTION_OK || $lr==FTP_COMMAND_OK);
		}

		function set_option() { //Set miscellaneous runtime FTP options
			$this->_resetError();
			$this->_setError(-1,"set_option not supported");
			return false;
		}

		function site($cmd) { //Sends a SITE command to the server
			$this->_resetError();

			$this->_printCommand("SITE $cmd");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			return true;
		}

		function size($name) { //Returns the size of the given file
			$this->_resetError();

			$this->_printCommand("SIZE $name");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			return $lr==FTP_FILE_STATUS ? trim(substr($this->lastLine,4)) : FALSE;
		}

		function ssl_connect() { //Opens an Secure SSL-FTP connection
			$this->_resetError();
			$this->_setError(-1,"ssl_connect not supported");
			return false;
		}

		function systype() { // Returns the system type identifier of the remote FTP server
			$this->_resetError();

			$this->_printCommand("SYST");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			return $lr==FTP_NAME_SYSTEM_TYPE ? trim(substr($this->lastLine,4)) : FALSE;
		}

		function getLastResult() {
			$this->newResult = FALSE;
			return $this->lastResult;
		}
		
		/* private */
		function _hasNewResult() {
			return $this->newResult;
		}
		
		/* private */
		function _waitForResult() {
			while(!$this->_hasNewResult() && $this->_readln()!==FALSE && !$this->_isError()) { /* noop  */ }
		}
		
		/* private */
		function _readln() {
			$line = fgets($this->controlSocket);
			if ($line === FALSE) {
				$this->_setError(-1,"fgets failed in _readln");
				return FALSE;
			}
			if (strlen($line)==0) return $line;

			$lucifer = array();
			if (preg_match("/^[0-9][0-9][0-9] /",$line,$lucifer)) {
				//its a resultline
				$this->lastResult = intval($lucifer[0]);
				$this->newResult = TRUE;
				if (substr($lucifer[0],0,1)=='5') {
					$this->_setError($this->lastResult,trim(substr($line,4)));
				}
			}
	
			$this->lastLine = trim($line);
			$this->lastLines[] = "< ".trim($line);
			return $line;
		}
		
		/* private */
		function _printCommand($line) {
			$this->lastLines[] = "> ".$line;
			fwrite($this->controlSocket,$line."\r\n");
			fflush($this->controlSocket);
		}
		
		/* private */
		function _pasv() {
			$this->_resetError();
			$this->_printCommand("PASV");
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if ($this->_isError()) return FALSE;
			if ($lr!=FTP_PASSIVE_MODE) return FALSE;
			$subject = trim(substr($this->lastLine,4));
			$lucifer = array();
			if (preg_match("/\\((\d{1,3}),(\d{1,3}),(\d{1,3}),(\d{1,3}),(\d{1,3}),(\d{1,3})\\)/",$subject,$lucifer)) {
				$this->pasvAddr=$lucifer;
				
				$host = sprintf("%d.%d.%d.%d",$lucifer[1],$lucifer[2],$lucifer[3],$lucifer[4]);
				$port = $lucifer[5]*256 + $lucifer[6];
				
				$err_no=0;
				$err_msg="";
				$passiveConnection = fsockopen($host,$port,$err_no,$err_msg, FTP_TIMEOUT);
				if ($err_no!=0) {
					$this->_setError($err_no,$err_msg);
					return FALSE;
				}

				return $passiveConnection;
			}
			return FALSE;
		}
		
		/* private */
		function _download($cmd) {
			if (!($passiveConnection = $this->_pasv())) return FALSE;
			$this->_printCommand($cmd);
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if (!$this->_isError()) {
				$result = "";
				while (!feof($passiveConnection)) {
					$result .= fgets($passiveConnection);
				}
				fclose($passiveConnection);
				$this->_waitForResult();
				$lr = $this->getLastResult();
				return ($lr==FTP_FILE_TRANSFER_OK) || ($lr==FTP_FILE_ACTION_OK) || ($lr==FTP_COMMAND_OK) ? $result : FALSE;
			} else {
				fclose($passiveConnection);
				return FALSE;
			}
		}

		/* upload */
		function _uploadResource($cmd,$resource) {
			if (!($passiveConnection = $this->_pasv())) return FALSE;
			$this->_printCommand($cmd);
			$this->_waitForResult();
			$lr = $this->getLastResult();
			if (!$this->_isError()) {
				$result = "";
				while (!feof($resource)) {
					$buf = fread($resource,1024);
					fwrite($passiveConnection,$buf);
				}
				fclose($passiveConnection);
				$this->_waitForResult();
				$lr = $this->getLastResult();
				return ($lr==FTP_FILE_TRANSFER_OK) || ($lr==FTP_FILE_ACTION_OK) || ($lr==FTP_COMMAND_OK) ? $result : FALSE;
			} else {
				fclose($passiveConnection);
				return FALSE;
			}
		}
		
		/* private */
		function _resetError() {
			$this->error_no = NULL;
			$this->error_msg = NULL;
		}

		/* private */
		function _setError($no,$msg) {
			if (is_array($this->error_no)) {
				$this->error_no[] = $no;
				$this->error_msg[] = $msg;
			} else if ($this->error_no!=NULL) {
				$this->error_no = array($this->error_no,$no);
				$this->error_msg = array($this->error_msg,$msg);
			} else {
				$this->error_no = $no;
				$this->error_msg = $msg;
			}
		}
		
		/* private */
		function _isError() {
			return ($this->error_no != NULL) && ($this->error_no !== 0);
		}

	}
?>