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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Net_FTP socket implementation of FTP functions.
*
* The functions in this file emulate the ext/FTP functions through
* ext/Socket.
*
* PHP versions 4 and 5
*
* @category Networking
* @package FTP
* @author Tobias Schlitt <toby@php.net>
* @copyright 1997-2008 The PHP Group
* @license BSD http://www.opensource.org/licenses/bsd-license.php
* @version CVS: $Id: Socket.php 246 2016-02-10 21:21:12Z soeren $
* @link http://pear.php.net/package/Net_FTP
* @since File available since Release 0.0.1
*/
/**
* Default FTP extension constants
*/
define('FTP_ASCII', 0);
define('FTP_TEXT', 0);
define('FTP_BINARY', 1);
define('FTP_IMAGE', 1);
define('FTP_TIMEOUT_SEC', 0);
/**
* What needs to be done overall?
* #1 Install the rest of these functions
* #2 Document better
* #3 Alot of other things I don't remember
*/
/*
* !!! NOTE !!!
* Most of the comment's are "not working",
* meaning they are not all up-to-date
* !!! NOTE !!!
*/
/**
* &resource ftp_connect ( string host [, int port [, int timeout ] ] );
*
* Opens an FTP connection and return resource or false on failure.
*
* FTP Success respons code: 220
*
* @param string $host Host to connect to
* @param int $port Optional, port to connect to
* @param int $timeout Optional, seconds until function timeouts
*
* @todo The FTP extension has ftp_get_option() function which returns the
* timeout variable. This function needs to be created and contain it as
* static variable.
* @todo The FTP extension has ftp_set_option() function which sets the
* timeout variable. This function needs to be created and called here.
* @access public
* @return &resource
*/
if (!function_exists('ftp_connect')) {
function &ftp_connect($host, $port = 21, $timeout = 90)
{
$false = false; // We are going to return refrence (E_STRICT)
if (!is_string($host) || !is_integer($port) || !is_integer($timeout)) {
return $false;
}
$iError = 0;
$sError = '';
$control = @fsockopen($host, $port, $iError, $sError,
$timeout);
$GLOBALS['_NET_FTP']['timeout'] = $timeout;
if (!is_resource($control)) {
return $false;
}
stream_set_blocking($control, true);
stream_set_timeout($control, $timeout);
do {
$content[] = fgets($control, 8129);
$array = socket_get_status($control);
} while ($array['unread_bytes'] > 0);
if (substr($content[count($content)-1], 0, 3) == 220) {
return $control;
}
return $false;
}
}
/**
* boolean ftp_login ( resource stream, string username, string password );
*
* Logs in to an given FTP connection stream.
* Returns TRUE on success or FALSE on failure.
*
* NOTE:
* Username and password are *not* optional. Function will *not*
* assume "anonymous" if username and/or password is empty
*
* FTP Success respons code: 230
*
* @param resource &$control FTP resource to login to
* @param string $username FTP Username to be used
* @param string $password FTP Password to be used
*
* @access public
* @return boolean
*/
if (!function_exists('ftp_login')) {
function ftp_login(&$control, $username, $password)
{
if (!is_resource($control) || is_null($username)) {
return false;
}
fputs($control, 'USER '.$username."\r\n");
$contents = array();
do {
$contents[] = fgets($control, 8192);
$array = socket_get_status($control);
} while ($array['unread_bytes'] > 0);
if (substr($contents[count($contents)-1], 0, 3) != 331) {
return false;
}
fputs($control, 'PASS '.$password."\r\n");
$contents = array();
do {
$contents[] = fgets($control, 8192);
$array = socket_get_status($control);
} while ($array['unread_bytes']);
if (substr($contents[count($contents)-1], 0, 3) == 230) {
return true;
}
trigger_error('ftp_login() [<a href="function.ftp-login">function.ftp-login'.
'</a>]: '.$contents[count($contents)-1], E_USER_WARNING);
return false;
}
}
/**
* boolean ftp_quit ( resource stream );
*
* Closes FTP connection.
* Returns TRUE or FALSE on error.
*
* NOTE: The PHP function ftp_quit is *alias* to ftp_close, here it is
* the *other-way-around* ( ftp_close() is alias to ftp_quit() ).
*
* NOTE:
* resource is set to null since unset() can't unset the variable.
*
* @param resource &$control FTP resource
*
* @access public
* @return boolean
*/
if (!function_exists('ftp_quit')) {
function ftp_quit(&$control)
{
if (!is_resource($control)) {
return false;
}
fputs($control, 'QUIT'."\r\n");
fclose($control);
$control = null;
return true;
}
}
/**
* Alias to ftp_quit()
*
* @param resource &$control FTP resource
*
* @see ftp_quit()
* @access public
* @return boolean
*/
if (!function_exists('ftp_close')) {
function ftp_close(&$control)
{
return ftp_quit($control);
}
}
/**
* string ftp_pwd ( resource stream );
*
* Gets the current directory name.
* Returns the current directory.
*
* Needs data connection: NO
* Success response code: 257
*
* @param resource &$control FTP resource
*
* @access public
* @return string
*/
if (!function_exists('ftp_pwd')) {
function ftp_pwd(&$control)
{
if (!is_resource($control)) {
return $control;
}
fputs($control, 'PWD'."\r\n");
$content = array();
do {
$content[] = fgets($control, 8192);
$array = socket_get_status($control);
} while ($array['unread_bytes'] > 0);
if (substr($cont = $content[count($content)-1], 0, 3) == 257) {
$pos = strpos($cont, '"')+1;
$pos2 = strrpos($cont, '"') - $pos;
$path = substr($cont, $pos, $pos2);
return $path;
}
return false;
}
}
/**
* boolean ftp_chdir ( resource stream, string directory );
*
* Changes the current directory to the specified directory.
* Returns TRUE on success or FALSE on failure.
*
* FTP success response code: 250
* Needs data connection: NO
*
* @param resource &$control FTP stream
* @param string $pwd Directory name
*
* @access public
* @return boolean
*/
if (!function_exists('ftp_chdir')) {
function ftp_chdir(&$control, $pwd)
{
if (!is_resource($control) || !is_string($pwd)) {
return false;
}
fputs($control, 'CWD '.$pwd."\r\n");
$content = array();
do {
$content[] = fgets($control, 8192);
$array = socket_get_status($control);
} while ($array['unread_bytes'] > 0);
if (substr($content[count($content)-1], 0, 3) == 250) {
return true;
}
trigger_error('ftp_chdir() [<a
href="function.ftp-chdir">function.ftp-chdir</a>]:
' .$content[count($content)-1], E_USER_WARNING);
return false;
}
}
$_NET_FTP = array();
$_NET_FTP['USE_PASSIVE'] = false;
$_NET_FTP['DATA'] = null;
/**
* boolean ftp_pasv ( resource stream, boolean passive );
*
* Toggles passive mode ON/OFF.
* Returns TRUE on success or FALSE on failure.
*
* Comment:
* Although my lack of C knowlege I checked how the PHP FTP extension
* do things here. Seems like they create the data connection and store
* it in object for other functions to use.
* This is now done here.
*
* FTP success response code: 227
*
* @param stream &$control FTP stream
* @param boolean $pasv True to switch to passive, false for active mode
*
* @access public
* @return boolean
*/
if (!function_exists('ftp_pasv')) {
function ftp_pasv(&$control, $pasv)
{
if (!is_resource($control) || !is_bool($pasv)) {
return false;
}
// If data connection exists, destroy it
if (isset($GLOBALS['_NET_FTP']['DATA'])) {
fclose($GLOBALS['_NET_FTP']['DATA']);
$GLOBALS['_NET_FTP']['DATA'] = null;
do {
fgets($control, 16);
$array = socket_get_status($control);
} while ($array['unread_bytes'] > 0);
}
// Are we suppost to create active or passive connection?
if (!$pasv) {
$GLOBALS['_NET_FTP']['USE_PASSIVE'] = false;
// Pick random "low bit"
$low = rand(39, 250);
// Pick random "high bit"
$high = rand(39, 250);
// Lowest possible port would be; 10023
// Highest possible port would be; 64246
$port = ($low<<8)+$high;
$ip = str_replace('.', ',', $_SERVER['SERVER_ADDR']);
$s = $ip.','.$low.','.$high;
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if (is_resource($socket)) {
if (socket_bind($socket, '0.0.0.0', $port)) {
if (socket_listen($socket)) {
$GLOBALS['_NET_FTP']['DATA'] = &$socket;
fputs($control, 'PORT '.$s."\r\n");
$line = fgets($control, 512);
if (substr($line, 0, 3) == 200) {
return true;
}
}
}
}
return false;
}
// Since we are here, we are suppost to create passive data connection.
fputs($control, 'PASV' ."\r\n");
$content = array();
do {
$content[] = fgets($control, 128);
$array = socket_get_status($control);
} while ($array['unread_bytes']);
if (substr($cont = $content[count($content)-1], 0, 3) != 227) {
return false;
}
$pos = strpos($cont, '(')+1;
$pos2 = strrpos($cont, ')')-$pos;
$string = substr($cont, $pos, $pos2);
$array = explode(',', $string);
// IP we are connecting to
$ip = $array[0]. '.' .$array[1]. '.' .$array[2]. '.' .$array[3];
// Port ( 256*lowbit + highbit
$port = ($array[4] << 8)+$array[5];
// Our data connection
$iError = 0;
$sError = '';
$data = fsockopen($ip, $port, $iError, $sError,
$GLOBALS['_NET_FTP']['timeout']);
if (is_resource($data)) {
$GLOBALS['_NET_FTP']['USE_PASSIVE'] = true;
$GLOBALS['_NET_FTP']['DATA'] = &$data;
stream_set_blocking($data, true);
stream_set_timeout($data, $GLOBALS['_NET_FTP']['timeout']);
return true;
}
return false;
}
}
/**
* array ftp_rawlist ( resource stream, string directory [,bool recursive] );
*
* Returns a detailed list of files in the given directory.
*
* Needs data connection: YES
*
* @param integer &$control FTP resource
* @param string $pwd Path to retrieve
* @param boolean $recursive Optional, retrieve recursive listing
*
* @todo Enable the recursive feature.
* @access public
* @return array
*/
if (!function_exists('ftp_rawlist')) {
function ftp_rawlist(&$control, $pwd, $recursive = false)
{
if (!is_resource($control) || !is_string($pwd)) {
return false;
}
if (!isset($GLOBALS['_NET_FTP']['DATA']) ||
!is_resource($GLOBALS['_NET_FTP']['DATA'])) {
ftp_pasv($control, $GLOBALS['_NET_FTP']['USE_PASSIVE']);
}
fputs($control, 'LIST '.$pwd."\r\n");
$msg = fgets($control, 512);
if (substr($msg, 0, 3) == 425) {
return false;
}
$data = &$GLOBALS['_NET_FTP']['DATA'];
if (!$GLOBALS['_NET_FTP']['USE_PASSIVE']) {
$data = &socket_accept($data);
}
$content = array();
switch ($GLOBALS['_NET_FTP']['USE_PASSIVE']) {
case true:
while (true) {
$string = rtrim(fgets($data, 1024));
if ($string=='') {
break;
}
$content[] = $string;
}
fclose($data);
break;
case false:
$string = socket_read($data, 1024, PHP_BINARY_READ);
$content = explode("\n", $string);
unset($content[count($content)-1]);
socket_close($GLOBALS['_NET_FTP']['DATA']);
socket_close($data);
break;
}
$data = $GLOBALS['_NET_FTP']['DATA'] = null;
fgets($control, 1024);
return $content;
}
}
/**
* string ftp_systype ( resource stream );
*
* Gets system type identifier of remote FTP server
* Returns the remote system type
*
* @param resource &$control FTP resource
*
* @access public
* @return string
*/
if (!function_exists('ftp_systype')) {
function ftp_systype(&$control)
{
if (!is_resource($control)) {
return false;
}
fputs($control, 'SYST'."\r\n");
$line = fgets($control, 256);
if (substr($line, 0, 3) != 215) {
return false;
}
$os = substr($line, 4, strpos($line, ' ', 4)-4);
return $os;
}
}
/**
* boolean ftp_alloc ( resource stream, integer bytes [, string &message ] );
*
* Allocates space for a file to be uploaded
* Return TRUE on success or FALSE on failure
*
* NOTE; Many FTP servers do not support this command and/or don't need it.
*
* FTP success respons key: Belive it's 200
* Needs data connection: NO
*
* @param resource &$control FTP stream
* @param integer $int Space to allocate
* @param string &$msg Optional, textual representation of the servers response
* will be returned by reference
*
* @access public
* @return boolean
*/
if (!function_exists('ftp_alloc')) {
function ftp_alloc(&$control, $int, &$msg = null)
{
if (!is_resource($control) || !is_integer($int)) {
return false;
}
fputs($control, 'ALLO '.$int.' R '.$int."\r\n");
$msg = rtrim(fgets($control, 256));
$code = substr($msg, 0, 3);
if ($code == 200 || $code == 202) {
return true;
}
return false;
}
}
/**
* bool ftp_put ( resource stream, string remote_file, string local_file,
* int mode [, int startpos ] );
*
* Uploads a file to the FTP server
* Returns TRUE on success or FALSE on failure.
*
* NOTE:
* The transfer mode specified must be either FTP_ASCII or FTP_BINARY.
*
* @param resource &$control FTP stream
* @param string $remote Remote file to write
* @param string $local Local file to upload
* @param integer $mode Upload mode, FTP_ASCI || FTP_BINARY
* @param integer $pos Optional, start upload at position
*
* @access public
* @return boolean
*/
if (!function_exists('ftp_put')) {
function ftp_put(&$control, $remote, $local, $mode, $pos = 0)
{
if (!is_resource($control) || !is_readable($local) ||
!is_integer($mode) || !is_integer($pos)) {
return false;
}
$types = array (
0 => 'A',
1 => 'I'
);
$windows = array (
0 => 't',
1 => 'b'
);
/**
* TYPE values:
* A ( ASCII )
* I ( BINARY )
* E ( EBCDIC )
* L ( BYTE )
*/
if (!isset($GLOBALS['_NET_FTP']['DATA']) ||
!is_resource($GLOBALS['_NET_FTP']['DATA'])) {
ftp_pasv($control, $GLOBALS['_NET_FTP']['USE_PASSIVE']);
}
// Establish data connection variable
$data = &$GLOBALS['_NET_FTP']['DATA'];
// Decide TYPE to use
fputs($control, 'TYPE '.$types[$mode]."\r\n");
$line = fgets($control, 256); // "Type set to TYPE"
if (substr($line, 0, 3) != 200) {
return false;
}
fputs($control, 'STOR '.$remote."\r\n");
sleep(1);
$line = fgets($control, 256); // "Opening TYPE mode data connect."
if (substr($line, 0, 3) != 150) {
return false;
}
// Creating resource to $local file
$fp = fopen($local, 'r'. $windows[$mode]);
if (!is_resource($fp)) {
$fp = null;
return false;
}
// Loop throu that file and echo it to the data socket
$i = 0;
switch ($GLOBALS['_NET_FTP']['USE_PASSIVE']) {
case false:
$data = &socket_accept($data);
while (!feof($fp)) {
$i += socket_write($data, fread($fp, 10240), 10240);
}
socket_close($data);
break;
case true:
while (!feof($fp)) {
$i += fputs($data, fread($fp, 10240), 10240);
}
fclose($data);
break;
}
$data = null;
do {
$line = fgets($control, 256);
} while (substr($line, 0, 4) != "226 ");
return true;
}
}
/**
* Retrieve a remote file to a local file
* Returns TRUE on success or FALSE on failure
*
* @param integer &$control Stream ID
* @param string $local Local filename
* @param string $remote Remote filename
* @param integer $mode Transfer mode (FTP_ASCII or FTP_BINARY)
* @param integer $resume Resume the file transfer or not
*
* @access public
* @return boolean
*/
if (!function_exists('ftp_get')) {
function ftp_get(&$control, $local, $remote, $mode, $resume = 0)
{
if (!is_resource($control) || !is_writable(dirname($local)) ||
!is_integer($mode) || !is_integer($resume)) {
return false;
}
$types = array (
0 => 'A',
1 => 'I'
);
$windows = array (
0 => 't',
1 => 'b'
);
if (!isset($GLOBALS['_NET_FTP']['DATA']) ||
!is_resource($GLOBALS['_NET_FTP'][ 'DATA'])) {
ftp_pasv($control, $GLOBALS['_NET_FTP']['USE_PASSIVE']);
}
fputs($control, 'TYPE '.$types[$mode]."\r\n");
$line = fgets($control, 256);
if (substr($line, 0, 3) != 200) {
return false;
}
$fp = fopen($local, 'w'.$windows[$mode]);
if (!is_resource($fp)) {
$fp = null;
return false;
}
return true;
}
}
/**
* Changes to the parent directory
* Returns TRUE on success or FALSE on failure
*
* @param integer &$control Stream ID
*
* @access public
* @return boolean
*/
if (!function_exists('ftp_cdup')) {
function ftp_cdup(&$control)
{
fputs($control, 'CDUP'."\r\n");
$line = fgets($control, 256);
if (substr($line, 0, 3) != 250) {
return false;
}
return true;
}
}
/**
* Set permissions on a file via FTP
* Returns the new file permission on success or false on error
*
* NOTE: This command is *not* supported by the standard
* NOTE: This command not ready!
*
* @param integer &$control Stream ID
* @param integer $mode Octal value
* @param string $file File to change permissions on
*
* @todo Figure out a way to chmod files via FTP
* @access public
* @return integer
*/
if (!function_exists('ftp_chmod')) {
function ftp_chmod(&$control, $mode, $file)
{
if (!is_resource($control) || !is_integer($mode) || !is_string($file)) {
return false;
}
// chmod not in the standard, proftpd doesn't recognize it
// use SITE CHMOD?
fputs($control, 'SITE CHMOD '.$mode. ' ' .$file."\r\n");
$line = fgets($control, 256);
if (substr($line, 0, 3) == 200) {
return $mode;
}
trigger_error('ftp_chmod() [<a
href="function.ftp-chmod">function.ftp-chmod</a>]: ' .
rtrim($line), E_USER_WARNING);
return false;
}
}
/**
* Deletes a file on the FTP server
* Returns TRUE on success or FALSE on failure
*
* @param integer &$control Stream ID
* @param string $path File to delete
*
* @access public
* @return boolean
*/
if (!function_exists('ftp_delete')) {
function ftp_delete(&$control, $path)
{
if (!is_resource($control) || !is_string($path)) {
return false;
}
fputs($control, 'DELE '.$path."\r\n");
$line = fgets($control, 256);
if (substr($line, 0, 3) == 250) {
return true;
}
return false;
}
}
/**
* Requests execution of a program on the FTP server
* NOTE; SITE EXEC is *not* supported by the standart
* Returns TRUE on success or FALSE on error
*
* @param integer &$control Stream ID
* @param string $cmd Command to send
*
* @access public
* @todo Look a littlebit better into this
* @return boolean
*/
if (!function_exists('ftp_exec')) {
function ftp_exec(&$control, $cmd)
{
if (!is_resource($control) || !is_string($cmd)) {
return false;
}
// Command not defined in the standart
// proftpd doesn't recognize SITE EXEC (only help,chgrp,chmod and ratio)
fputs($control, 'SITE EXEC '.$cmd."\r\n");
$line = fgets($control, 256);
// php.net/ftp_exec uses respons code 200 to verify if command was sent
// successfully or not, so we'll just do the same
if (substr($line, 0, 3) == 200) {
return true;
}
return false;
}
}
?>