From: php at stock-consulting dot com
Operating system: Windows 2000
PHP version: 5.2.4
PHP Bug Type: FTP related
Bug description: FTP functions apparently use wrong IP address for PORT in
PASV mode
Description:
------------
Situation: the local machine, which executes the PHP script via the
command line, sits behind a NAT firefall and needs to retrieve directory
listings and files from an FTP server sitting somewhere on the Internet.
Passive FTP is required to traverse the firewall. The local machine has the
IP address 10.0.0.1 (subnet configured as Class C). The external (WAN) IP
of the router/firewall is 80.x.x.x (address partially concealed to protect
the, erm, innocent).
Now the problem: the script correctly connects to the FTP server and
begins to retrieve directory listings (recursively) and files. At some
RANDOM point, the following warning appears:
Warning: ftp_chdir(): PORT command only accepts client IP address
(80.x.x.x
!=10.0.0.1). in my_script.php on line 40
This warning then appears both at all further attempts to retrieve
directory listings and files. The transfers are not successful.
Note that directory and file retrieval works perfectly UNTIL the warning
occurs for the first time, at some random time. When the script is
restarted, it will again work for some listings and files, until, at some
different point, the warning will appear again.
Reproduce code:
---------------
// Short version, stripped from anything which appeared not so useful for
this bug report
function remote_scan($path) {
global $ftp;
ftp_chdir($ftp, $path);
$raw_entries = ftp_rawlist($ftp, $path);
foreach ($raw_entries AS $line) {
$entry = preg_split('@\s+@', $line, 9);
if ($entry[4] == 0) {
remote_scan($path . $entry[8] . '/');
} else {
ftp_get($ftp, 'x:/local_path' . $path . $entry[8],
$path . $entry[8],
FTP_BINARY);
}
}
}
$ftp = ftp_connect('ftp.url', 47624); // server uses non-standard port
$login_result = ftp_login($ftp, 'user', 'password');
ftp_pasv($ftp, true);
remote_scan('/');
ftp_close($ftp);
--
Edit bug report at http://bugs.php.net/?id=42492&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=42492&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=42492&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=42492&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=42492&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=42492&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=42492&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=42492&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=42492&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=42492&r=support
Expected behavior: http://bugs.php.net/fix.php?id=42492&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=42492&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=42492&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=42492&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42492&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=42492&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=42492&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=42492&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=42492&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=42492&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=42492&r=mysqlcfg
