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- added size() to Net_SFTP (thanks, Ethorsen!)

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- adjusted encryption algorithm preferences for speed (thanks, TangiX!)


git-svn-id: http://phpseclib.svn.sourceforge.net/svnroot/phpseclib/trunk@98 21d32557-59b3-4da0-833f-c5933fad653e
This commit is contained in:
Jim Wigginton 2010-04-04 00:20:03 +00:00
parent 1983dd5649
commit 9a3c2e836b
2 changed files with 55 additions and 12 deletions
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53
phpseclib/Net/SFTP.php
View File

@ -48,7 +48,7 @@
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMIX Jim Wigginton
* @license http://www.gnu.org/licenses/lgpl.txt
* @version $Id: SFTP.php,v 1.17 2010-02-18 16:56:07 terrafrost Exp $
* @version $Id: SFTP.php,v 1.18 2010-04-04 00:20:03 terrafrost Exp $
* @link http://phpseclib.sourceforge.net
*/
@ -279,7 +279,7 @@ class Net_SFTP extends Net_SSH2 {
0x00000002 => 'NET_SFTP_ATTR_UIDGID', // defined in SFTPv3, removed in SFTPv4+
0x00000004 => 'NET_SFTP_ATTR_PERMISSIONS',
0x00000008 => 'NET_SFTP_ATTR_ACCESSTIME',
0x80000000 => 'NET_SFTP_ATTR_EXTENDED'
-1 => 'NET_SFTP_ATTR_EXTENDED' // unpack('N', "\xFF\xFF\xFF\xFF") == array(1 => int(-1))
);
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-6.3
// the flag definitions change somewhat in SFTPv5+. if SFTPv5+ support is added to this library, maybe name
@ -666,6 +666,47 @@ class Net_SFTP extends Net_SSH2 {
return $contents;
}
/**
* Returns the file size, in bytes, or false, on failure
*
* Files larger than 4GB will show up as being exactly 4GB.
*
* @param optional String $dir
* @return Mixed
* @access public
*/
function size($filename)
{
if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) {
return false;
}
$filename = $this->_realpath($filename);
if ($filename === false) {
return false;
}
// SFTPv4+ adds an additional 32-bit integer field - flags - to the following:
$packet = pack('Na*', strlen($filename), $filename);
if (!$this->_send_sftp_packet(NET_SFTP_STAT, $packet)) {
return false;
}
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_ATTRS:
$attrs = $this->_parseAttributes($response);
return $attrs['size'];
case NET_SFTP_STATUS:
extract(unpack('Nstatus/Nlength', $this->_string_shift($response, 8)));
$this->sftp_errors[] = $this->status_codes[$status] . ': ' . $this->_string_shift($response, $length);
return false;
}
user_error('Expected SSH_FXP_ATTRS or SSH_FXP_STATUS', E_USER_NOTICE);
return false;
}
/**
* Set permissions on a file.
*
@ -715,7 +756,7 @@ class Net_SFTP extends Net_SSH2 {
// rather than return what the permissions *should* be, we'll return what they actually are. this will also
// tell us if the file actually exists.
// incidentally ,SFTPv4+ adds an additional 32-bit integer field - flags - to the following:
// incidentally, SFTPv4+ adds an additional 32-bit integer field - flags - to the following:
$packet = pack('Na*', strlen($filename), $filename);
if (!$this->_send_sftp_packet(NET_SFTP_STAT, $packet)) {
return false;
@ -885,6 +926,8 @@ class Net_SFTP extends Net_SSH2 {
$size = strlen($data);
}
$size = $size < 0 ? ($size & 0x7FFFFFFF) + 0x80000000 : $size;
$sftp_packet_size = 34000; // PuTTY uses 4096
$i = 0;
while ($sent < $size) {
@ -1187,7 +1230,7 @@ class Net_SFTP extends Net_SSH2 {
switch ($flags & $key) {
case NET_SFTP_ATTR_SIZE: // 0x00000001
// size is represented by a 64-bit integer, so we perhaps ought to be doing the following:
//$attr['size'] = new Math_BigInteger($this->_string_shift($response, 8), 256);
// $attr['size'] = new Math_BigInteger($this->_string_shift($response, 8), 256);
// of course, you shouldn't be using Net_SFTP to transfer files that are in excess of 4GB
// (0xFFFFFFFF bytes), anyway. as such, we'll just represent all file sizes that are bigger than
// 4GB as being 4GB.
@ -1195,7 +1238,7 @@ class Net_SFTP extends Net_SSH2 {
if ($upper) {
$attr['size'] = 0xFFFFFFFF;
} else {
$attr['size'] = $size;
$attr['size'] = $size < 0 ? ($size & 0x7FFFFFFF) + 0x80000000 : $size;
}
break;
case NET_SFTP_ATTR_UIDGID: // 0x00000002 (SFTPv3 only)

14
phpseclib/Net/SSH2.php
View File

@ -60,7 +60,7 @@
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMVII Jim Wigginton
* @license http://www.gnu.org/licenses/lgpl.txt
* @version $Id: SSH2.php,v 1.40 2010-03-22 22:01:38 terrafrost Exp $
* @version $Id: SSH2.php,v 1.41 2010-04-04 00:20:03 terrafrost Exp $
* @link http://phpseclib.sourceforge.net
*/
@ -715,6 +715,12 @@ class Net_SSH2 {
);
static $encryption_algorithms = array(
// from <http://tools.ietf.org/html/rfc4345#section-4>:
'arcfour256',
'arcfour128',
'arcfour', // OPTIONAL the ARCFOUR stream cipher with a 128-bit key
'aes128-cbc', // RECOMMENDED AES with a 128-bit key
'aes192-cbc', // OPTIONAL AES with a 192-bit key
'aes256-cbc', // OPTIONAL AES in CBC mode, with a 256-bit key
@ -725,12 +731,6 @@ class Net_SSH2 {
'aes256-ctr', // RECOMMENDED AES with 256-bit key
'3des-ctr', // RECOMMENDED Three-key 3DES in SDCTR mode
// from <http://tools.ietf.org/html/rfc4345#section-4>:
// (commented out since i don't know of any ssh servers that support them and thus am unable to test them)
//'arcfour128',
//'arcfour256',
'arcfour', // OPTIONAL the ARCFOUR stream cipher with a 128-bit key
'3des-cbc', // REQUIRED three-key 3DES in CBC mode
'none' // OPTIONAL no encryption; NOT RECOMMENDED
);