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[ticket/9297] Add support for Extended Passive Mode (EPSV) in ftp_fsock class.

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PHPBB3-9297
This commit is contained in:
Andreas Fischer 2011-08-10 16:14:45 +02:00
parent ec3f4db425
commit 66553fb857
1 changed files with 44 additions and 11 deletions
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55
phpBB/includes/functions_transfer.php
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@ -808,23 +808,56 @@ class ftp_fsock extends transfer
*/
function _open_data_connection()
{
$this->_send_command('PASV', '', false);
if (!$ip_port = $this->_check_command(true))
// Try to find out whether we have a IPv4 or IPv6 (control) connection
if (function_exists('stream_socket_get_name'))
{
return false;
$socket_name = stream_socket_get_name($this->connection, true);
$server_ip = substr($socket_name, 0, strrpos($socket_name, ':'));
}
// open the connection to start sending the file
if (!preg_match('#[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+#', $ip_port, $temp))
if (!isset($server_ip) || preg_match(get_preg_expression('ipv4'), $server_ip))
{
// bad ip and port
return false;
// Passive mode
$this->_send_command('PASV', '', false);
if (!$ip_port = $this->_check_command(true))
{
return false;
}
// open the connection to start sending the file
if (!preg_match('#[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+#', $ip_port, $temp))
{
// bad ip and port
return false;
}
$temp = explode(',', $temp[0]);
$server_ip = $temp[0] . '.' . $temp[1] . '.' . $temp[2] . '.' . $temp[3];
$server_port = $temp[4] * 256 + $temp[5];
}
else
{
// Extended Passive Mode - RFC2428
$this->_send_command('EPSV', '', false);
if (!$epsv_response = $this->_check_command(true))
{
return false;
}
// Response looks like "229 Entering Extended Passive Mode (|||12345|)"
// where 12345 is the tcp port for the data connection
if (!preg_match('#\(\|\|\|([0-9]+)\|\)#', $epsv_response, $match))
{
return false;
}
$server_port = (int) $match[1];
// fsockopen expects IPv6 address in square brackets
$server_ip = "[$server_ip]";
}
$temp = explode(',', $temp[0]);
$server_ip = $temp[0] . '.' . $temp[1] . '.' . $temp[2] . '.' . $temp[3];
$server_port = $temp[4] * 256 + $temp[5];
$errno = 0;
$errstr = '';