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phpseclib
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Compatibility fixes 

- PHP4 doesn't allow method chaining
- $_SESSION isn't always defined
- on PHP5.1 and earlier using 0x100000000 instead of 4294967296 gives E_NOTICE
- array('Net_SSH2', 'func_name') doesn't work so we fix this by passing $this to it.
  to make that work on PHP4 pass by call-time reference. normally this would result
  in a fatal error on PHP5.4+ but doesn't seem to in this case. the following URL
  elaborates:

  http://stackoverflow.com/q/20732563/569976
This commit is contained in:
terrafrost 2013-12-22 18:14:49 -06:00
parent 4bd9a546ab
commit 0f5b3ea416
3 changed files with 26 additions and 11 deletions
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6
phpseclib/Crypt/Random.php
View File

@ -131,9 +131,7 @@ function crypt_random_string($length)
$old_session_id = session_id();
$old_use_cookies = ini_get('session.use_cookies');
$old_session_cache_limiter = session_cache_limiter();
if (isset($_SESSION)) {
$_OLD_SESSION = $_SESSION;
}
$_OLD_SESSION = isset($_SESSION) ? $_SESSION : false;
if ($old_session_id != '') {
session_write_close();
}
@ -166,7 +164,7 @@ function crypt_random_string($length)
ini_set('session.use_cookies', $old_use_cookies);
session_cache_limiter($old_session_cache_limiter);
} else {
if (isset($_OLD_SESSION)) {
if ($_OLD_SESSION !== false) {
$_SESSION = $_OLD_SESSION;
unset($_OLD_SESSION);
} else {

10
phpseclib/Net/SFTP.php
View File

@ -402,7 +402,7 @@ class Net_SFTP extends Net_SSH2
function login($username)
{
$args = func_get_args();
if (!call_user_func_array(array('Net_SSH2', 'login'), $args)) {
if (!call_user_func_array(array(&$this, '_login'), $args)) {
return false;
}
@ -1042,7 +1042,7 @@ class Net_SFTP extends Net_SSH2
*/
function truncate($filename, $new_size)
{
$attr = pack('N3', NET_SFTP_ATTR_SIZE, $new_size / 0x100000000, $new_size);
$attr = pack('N3', NET_SFTP_ATTR_SIZE, $new_size / 4294967296, $new_size);
return $this->_setstat($filename, $attr, false);
}
@ -1539,7 +1539,7 @@ class Net_SFTP extends Net_SSH2
while ($sent < $size) {
$temp = $mode & NET_SFTP_LOCAL_FILE ? fread($fp, $sftp_packet_size) : substr($data, $sent, $sftp_packet_size);
$subtemp = $offset + $sent;
$packet = pack('Na*N3a*', strlen($handle), $handle, $subtemp / 0x100000000, $subtemp, strlen($temp), $temp);
$packet = pack('Na*N3a*', strlen($handle), $handle, $subtemp / 4294967296, $subtemp, strlen($temp), $temp);
if (!$this->_send_sftp_packet(NET_SFTP_WRITE, $packet)) {
fclose($fp);
return false;
@ -1687,7 +1687,7 @@ class Net_SFTP extends Net_SSH2
$size = $this->max_sftp_packet < $length || $length < 0 ? $this->max_sftp_packet : $length;
while (true) {
$packet = pack('Na*N3', strlen($handle), $handle, $offset / 0x100000000, $offset, $size);
$packet = pack('Na*N3', strlen($handle), $handle, $offset / 4294967296, $offset, $size);
if (!$this->_send_sftp_packet(NET_SFTP_READ, $packet)) {
if ($local_file !== false) {
fclose($fp);
@ -1925,7 +1925,7 @@ class Net_SFTP extends Net_SSH2
// (0xFFFFFFFF bytes), anyway. as such, we'll just represent all file sizes that are bigger than
// 4GB as being 4GB.
extract(unpack('Nupper/Nsize', $this->_string_shift($response, 8)));
$attr['size'] = $upper ? 0x100000000 * $upper : 0;
$attr['size'] = $upper ? 4294967296 * $upper : 0;
$attr['size']+= $size < 0 ? ($size & 0x7FFFFFFF) + 0x80000000 : $size;
break;
case NET_SFTP_ATTR_UIDGID: // 0x00000002 (SFTPv3 only)

21
phpseclib/Net/SSH2.php
View File

@ -1284,7 +1284,8 @@ class Net_SSH2
-- http://tools.ietf.org/html/rfc4419#section-6.2 */
$one = new Math_BigInteger(1);
$keyLength = min($keyLength, $kexHash->getLength());
$max = $one->bitwise_leftShift(16 * $keyLength)->subtract($one); // 2 * 8 * $keyLength
$max = $one->bitwise_leftShift(16 * $keyLength); // 2 * 8 * $keyLengt
$max->subtract($one);
$x = $one->random($one, $max);
$e = $g->modPow($x, $prime);
@ -1671,10 +1672,26 @@ class Net_SSH2
* @param Mixed $password
* @param Mixed $...
* @return Boolean
* @see _login_helper
* @see _login
* @access public
*/
function login($username)
{
$args = func_get_args();
return call_user_func_array(array(&$this, '_login'), $args);
}
/**
* Login Helper
*
* @param String $username
* @param Mixed $password
* @param Mixed $...
* @return Boolean
* @see _login_helper
* @access private
*/
function _login($username)
{
$args = array_slice(func_get_args(), 1);
if (empty($args)) {