Update of /cvsroot/phpshell/phpshell
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv10298

Added Files:
        AUTHORS COPYING ChangeLog INSTALL README phpshell.php 
        sample.htaccess 
Log Message:
Imported PHP Shell version 1.5.

--- NEW FILE: INSTALL ---
Installation instructions for PHP Shell
Copyright (C) 2000 Martin Geisler <[EMAIL PROTECTED]>
Licensed under the GNU GPL. See the file COPYING for details.

Getting the tarball
-------------------
You can always get the latest version from www.gimpster.com. 


Installation
------------
Installation is easy: just untar the tarball into your webserver, and
then type in the URL of the page phpshell.php. It should look
something like this:
http://your.server.com/phpshell/phpshell.php


Password-protecting PHP Shell
-----------------------------
This will work, but i STRONGLY urge you to take a look at the file
sample.htaccess. You will be using it to password-protect PHP Shell.
To do so, first rename it to .htaccess, and then if you already have a
file with usernames and passwords for Apache, just change the bit
saying <path to auth-file> to the path of you file.

If you don't have such a file, then creating one is easy. Type the
following as root:

$ htpasswd -c /home/httpd/auth_users <username>

This will create the file /home/httpd/auth_users and promt for a
password for the username supplied. If your Apache is installed
somewhere else, then just adjust the path in both the command above
and in the .htaccess-file.
If you need to add extra usernames and passwords, then leave out the
-c in the command above.
It is important that you password-protect PHP Shell, or else everybody
will have access to your webserver over the Internet. They will be
able to erase your files, and perhaps even shutdown the webserver!
So be careful with this and remember that you can always find the
usual disclaimer in the file LICENSE. (This software is licensed under
GPL, I'm not responsible if you blow things up, etc... :-)

Bugs?
-----
If you find a bug or miss something in PHP Shell, please don't
hesitate to mail me at <[EMAIL PROTECTED]>! It has only been
tested for a very short time, so there might be some quirks in odd
situations.

Enjoy! - Martin Geisler <[EMAIL PROTECTED]>
--- NEW FILE: ChangeLog ---

--- NEW FILE: sample.htaccess ---
# Authentication file for <your domain>
# By Martin Geisler <[EMAIL PROTECTED]>

AuthName "PHP Shell"
AuthType Basic
AuthUserFile <path to auth-file>

require valid-user

--- NEW FILE: README ---
README for PHP Shell
Copyright (C) 2000 Martin Geisler <[EMAIL PROTECTED]>
Licensed under the GNU GPL. See the file COPYING for details.

What is PHP Shell?
------------------
PHP Shell is a shell wrapped in a PHP script. It's a tool you can use
to execute arbiritary shell-commands or browse the filesystem on your
remote webserver. This replaces, to a degree, a normal telnet-connection.
You can use it for transferring your site as a compressed file, and
then unpack it on the webserver, administration and maintenance of
your website using commands like ps, free, du, df etc...
 

Limitations
-----------
There are some limitations on what kind of programs you can run. It
won't do no good if you start something like Netscape or even vi. All
programs have to be strictly command-line programs, and they will have
no chance of getting user input after they have been lunched. They
properly also have to terminate within 30 seconds, as this is the
default time-limit imposed unto all PHP-scripts, to prevent them from
running in an infinite loop. Your ISP may have set this time-limit to
something else.

But you can rely on all the normal shell-functionality, like pipes,
output and input redirection, etc ... (There is no <tab>-completion,
though :-)


Who am I?
---------
(Well, my name is Martin, but that's not the point :-)

You may not be the same user when using PHP Shell, as you are when you
upload your files with ftp. On some systems you will be 'nobody', on
other systems you will become 'httpd' or 'www-data'. This is a rather
dangerous "feature" of PHP Shell! So use it at your own risk - I wont
be responsible if your account is closed or something like that
happens.

If you want to execute code as different user, then it's possible
to do so by using the Sudo program available from this address:

  http://www.courtesan.com/sudo/

The trick is to configure Sudo to allow the user running the webserver
to execute certain commands as a more privileged user. Please refer to
the documentation for Sudo for further information about doing this.
Thanks goes to Jeremy Miller <[EMAIL PROTECTED]> for this
information.</p>


How to use it
-------------
When you point your browser at PHP Shell and types in your password
(see the file INSTALL for more information on how to password-protect
PHP Shell), you'll be presented with a rather simple page. It has the
following elements:

The Command Input box:
  Here you can type a command, and when you press the "Execute" button
  the command will be executed in the current working directory.

  If your command is 'cd something', then it won't be executed like an
  ordinary command - the current working directory will be updated
  instead. This works with both relative and absolute paths.

  And if your command is 'ls', then it will be changed to 'ls -F'.
  This makes ls append indicators to the filenames: directories end with 
  a slash, executable files will end with an asterisk and so on.

The current working directory:
  This is the directory where all command are being executed. You can
  use the dropdown-box to choose a new working directory. To quickly
  jump towards the root of the filesystem, just click on
  one of the links to jump to that directory.

The Output
  Here goes the output from your commands. You will be able to scroll
  thought the box if the output is to large to fit inside.
  It is only output to stdout that goes into the Output box. This can
  be rather confusing, because then sometimes you just don't get any
  output.
  I've made a workaround, that fixes the problem. If you select
  "Enable stderr-trapping" your command <command> will be executed
  this way:
  
  <command> 1> /tmp/output.txt 2>&1; cat /tmp/output.txt; rm /tmp/output.txt

  It is done by simply appending the arguments to your command. It
  redirects all output from your command to a file, both stdout and
  stderr. It then shows the file, and cleans things up when
  finished. It's quick and dirty, and will only work if you haven't
  already redirected the output.


Download
--------
You can download PHP Shell from http://www.gimpster.com. The tarball
contains these files:

phpshell.php
  This is the script you run when you use PHP Shell.

ChangeLog
  This file describe the changes I've made to PHP Shell. By reading it
  you'll always know when I've added a new feature or made a bugfix,
  and the nature of the feature/bugfix.

README
  (This file:-)

INSTALL
  Tells you how to install PHP Shell. It explains how you can
  password-protect PHP Shell - this is very important, or else
  everybody will be able so snoop into your files and perhaps also be
  able to delete them! I've already seem one site that were using PHP
  Shell without password-protection, I was able so quickly find their
  config.inc.php-file from phpMyAdmin, and read the password to the
  database! So please take the time to password-protect PHP Shell.

sample.htaccess
  To make it extra easy for you to password-protect PHP Shell, I've
  include this template for a .htaccess-file. If you set this up
  correctly Apache will prompt you for a username and password when
  you try to access the directory containing PHP Shell.

COPYING
  Standard GNU disclamer
--- NEW FILE: COPYING ---
                    GNU GENERAL PUBLIC LICENSE
                       Version 2, June 1991

 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

                            Preamble

  The licenses for most software are designed to take away your
freedom to share and change it.  By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users.  This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it.  (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.)  You can apply it to
your programs, too.

  When we speak of free software, we are referring to freedom, not
price.  Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.

  To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.

  For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have.  You must make sure that they, too, receive or can get the
source code.  And you must show them these terms so they know their
rights.

  We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.

  Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software.  If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.

  Finally, any free program is threatened constantly by software
patents.  We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary.  To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.

  The precise terms and conditions for copying, distribution and
modification follow.

                    GNU GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License.  The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language.  (Hereinafter, translation is included without limitation in
the term "modification".)  Each licensee is addressed as "you".

Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope.  The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.

  1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.

You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.

  2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:

    a) You must cause the modified files to carry prominent notices
    stating that you changed the files and the date of any change.

    b) You must cause any work that you distribute or publish, that in
    whole or in part contains or is derived from the Program or any
    part thereof, to be licensed as a whole at no charge to all third
    parties under the terms of this License.

    c) If the modified program normally reads commands interactively
    when run, you must cause it, when started running for such
    interactive use in the most ordinary way, to print or display an
    announcement including an appropriate copyright notice and a
    notice that there is no warranty (or else, saying that you provide
    a warranty) and that users may redistribute the program under
    these conditions, and telling the user how to view a copy of this
    License.  (Exception: if the Program itself is interactive but
    does not normally print such an announcement, your work based on
    the Program is not required to print an announcement.)

These requirements apply to the modified work as a whole.  If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works.  But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.

Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.

In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.

  3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:

    a) Accompany it with the complete corresponding machine-readable
    source code, which must be distributed under the terms of Sections
    1 and 2 above on a medium customarily used for software interchange; or,

    b) Accompany it with a written offer, valid for at least three
    years, to give any third party, for a charge no more than your
    cost of physically performing source distribution, a complete
    machine-readable copy of the corresponding source code, to be
    distributed under the terms of Sections 1 and 2 above on a medium
    customarily used for software interchange; or,

    c) Accompany it with the information you received as to the offer
    to distribute corresponding source code.  (This alternative is
    allowed only for noncommercial distribution and only if you
    received the program in object code or executable form with such
    an offer, in accord with Subsection b above.)

The source code for a work means the preferred form of the work for
making modifications to it.  For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable.  However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.

If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.

  4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License.  Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.

  5. You are not required to accept this License, since you have not
signed it.  However, nothing else grants you permission to modify or
distribute the Program or its derivative works.  These actions are
prohibited by law if you do not accept this License.  Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.

  6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions.  You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.

  7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all.  For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.

If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.

It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices.  Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.

This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.

  8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded.  In such case, this License incorporates
the limitation as if written in the body of this License.

  9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time.  Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.

Each version is given a distinguishing version number.  If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation.  If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.

  10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission.  For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this.  Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.

                            NO WARRANTY

  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.

  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

                     END OF TERMS AND CONDITIONS

        Appendix: How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) 19yy  <name of author>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

Also add information on how to contact you by electronic and paper mail.

If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:

    Gnomovision version 69, Copyright (C) 19yy name of author
    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.

You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary.  Here is a sample; alter the names:

  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  `Gnomovision' (which makes passes at compilers) written by James Hacker.

  <signature of Ty Coon>, 1 April 1989
  Ty Coon, President of Vice

This General Public License does not permit incorporating your program into
proprietary programs.  If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library.  If this is what you want to do, use the GNU Library General
Public License instead of this License.

--- NEW FILE: AUTHORS ---
Main author: Martin Geisler <[EMAIL PROTECTED]>

Thanks goes to all these persons who have helped:

[EMAIL PROTECTED]
  Fixed a problem the list of directories, if one accessed the
  root-directory.

--- NEW FILE: phpshell.php ---
<?php

define('PHPSHELL_VERSION', '1.5');

/*

  **************************************************************
  *                        PHP Shell                           *
  **************************************************************
  $Id: phpshell.php,v 1.1 2006/01/13 16:58:45 mgeisler Exp $

  An interactive PHP-page that will execute any command entered.
  See the files README and INSTALL or http://www.gimpster.com  for
  further information. 
  Copyright (C) 2000-2002 Martin Geisler <[EMAIL PROTECTED]>

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version 2
  of the License, or (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You can get a copy of the GNU General Public License from this
  address: http://www.gnu.org/copyleft/gpl.html#SEC1
  You can also write to the Free Software Foundation, Inc., 59 Temple
  Place - Suite 330, Boston, MA  02111-1307, USA.
  
*/
?>

<html>
<head>
<title>PHP Shell <?php echo PHPSHELL_VERSION ?></title>
</head>
<body>
<h1>PHP Shell <?php echo PHPSHELL_VERSION ?></h1>

<?php
/* First we check if there has been asked for a working directory. */
if (!empty($work_dir)) {
  /* A workdir has been asked for */
  if (!empty($command)) {
    if (ereg('^[[:blank:]]*cd[[:blank:]]+([^;]+)$', $command, $regs)) {
      if ($regs[1][0] == '/') {
        $new_dir = $regs[1];
      } else {
        $new_dir = $work_dir . '/' . $regs[1];
      }
      if (file_exists($new_dir) && is_dir($new_dir)) {
        $work_dir = $new_dir;
      }
      unset($command);
    }
  }
}

/* we chdir to that dir. */
if (file_exists($work_dir) && is_dir($work_dir)) {
  chdir($work_dir);
  $work_dir = exec("pwd");
} else {
  /* No work_dir - we chdir to $DOCUMENT_ROOT */
  chdir($DOCUMENT_ROOT);
  $work_dir = $DOCUMENT_ROOT;
}
?>

<form name="myform" action="<?php echo $PHP_SELF ?>" method="post">
<p>Current working directory: <b>
<?php
$work_dir_splitted = explode("/", substr($work_dir, 1));
echo "<a href=\"$PHP_SELF?work_dir=" . urlencode($url) . "/&command=" . 
urlencode($command) . "\">Root</a>/";
if ($work_dir_splitted[0] == "") {
    $work_dir = "/";  /* Root directory. */
} else {
  for ($i = 0; $i < count($work_dir_splitted); $i++) {
    /*  echo "i = $i";*/
    $url .= "/".$work_dir_splitted[$i];
    echo "<a href=\"$PHP_SELF?work_dir=" . urlencode($url) . "&command=" . 
urlencode($command) . "\">$work_dir_splitted[$i]</a>/";
  }
}
?></b></p>
<p>Choose new working directory:
<select name="work_dir" onChange="this.form.submit()">
<?php
/* Now we make a list of the directories. */
$dir_handle = opendir($work_dir);
/* Run through all the files and directories to find the dirs. */
while ($dir = readdir($dir_handle)) {
  if (is_dir($dir)) {
    if ($dir == ".") {
      echo "<option value=\"$work_dir\" selected>Current Directory</option>\n";
    } elseif ($dir == "..") {
      /* We have found the parent dir. We must be carefull if the parent 
         directory is the root directory (/). */
      if (strlen($work_dir) == 1) {
        /* work_dir is only 1 charecter - it can only be / There's no
          parent directory then. */
      } elseif (strrpos($work_dir, "/") == 0) {
        /* The last / in work_dir were the first charecter.
           This means that we have a top-level directory
           eg. /bin or /home etc... */
      echo "<option value=\"/\">Parent Directory</option>\n";
      } else {
      /* We do a little bit of string-manipulation to find the parent
         directory... Trust me - it works :-) */
      echo "<option value=\"". strrev(substr(strstr(strrev($work_dir), "/"), 
1)) ."\">Parent Directory</option>\n";
      }
    } else {
      if ($work_dir == "/") {
        echo "<option value=\"$work_dir$dir\">$dir</option>\n";
      } else {
        echo "<option value=\"$work_dir/$dir\">$dir</option>\n";
      }
    }
  }
}
closedir($dir_handle);
?>

</select></p>

<p>Command: <input type="text" name="command" size="60">
<input name="submit_btn" type="submit" value="Execute Command"></p>

<p>Enable <code>stderr</code>-trapping? <input type="checkbox" 
name="stderr"></p>
<textarea cols="80" rows="20" readonly>

<?php
if (!empty($command)) {
  if ($stderr) {
    $command .= " 1> /tmp/output.txt 2>&1; " .
    "cat /tmp/output.txt; rm /tmp/output.txt";
  } else if ($command == 'ls') {
    /* ls looks much better with ' -F', IMHO. */
    $command .= ' -F';
  }
  system($command);
}
?>

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