PHP Shell

By Martin Geisler
on August 6, 2000
Version: 1.6
Type: Full Script
Category: Other
License: GNU General Public License
Description: PHP Shell enables you to execute commands on your webserver, like as if you had a telnet-connection.
You can browse the filesystem, use pipes etc.
<?php

/*

  **************************************************************
  *                        PHP Shell                           *
  **************************************************************
  $Id: phpshell.php,v 1.6 2000/08/06 09:28:42 martin 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 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 - By Martin Geisler</title>
</head>
<body>
<h1>PHP Shell</h1>

<?php
/* First we check if there has been asked for a working directory. */
if (isset($work_dir)) {
  /* A workdir has been asked for - we chdir to that dir. */
  chdir($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="phpshell.php" method="post">
<p>Current working directory: <b><?
$work_dir_splitted = explode("/", substr($work_dir, 1));
/*echo $work_dir_splitted[0] ." ". $work_dir_splitted[1];*/
echo "<a href="phpshell.php?work_dir=" . urlencode($url) . "/&command=" . urlencode($command) . "">Root</a>/";
if ($work_dir_splitted[0] == "") {
} else {
  for ($i = 0; $i < count($work_dir_splitted); $i++) {
    /*  echo "i = $i";*/
    $url .= "/".$work_dir_splitted[$i];
    echo "<a href="phpshell.php?work_dir=" . urlencode($url) . "&command=" . urlencode($command) . "">$work_dir_splitted[$i]</a>/";
  }
}
?></b></p>
<p>Choose new working directory:</p>
<select name="work_dir" onChange="this.form.submit()">
<?
/* 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($work_dir) == 1) {
	/* work_dir is only 1 charecter - it can only be / */
      } elseif (strrpos($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($dir_handle);
?>
</select>
<p>Command:</p>
<input type="text" name="command" size="60" <? if ($command) { echo "value="$command"";} ?> > <input name="submit_btn" type="submit" value="Execute Command"></p>
<p>Enable <code>stderr</code>-trapping? <input type="checkbox" name="stderr"></p>
<p>Output:</p>
<textarea cols="80" rows="20" readonly>
<?php
if ($command) {
  if ($stderr) {
    system($command . " 1> /tmp/output.txt 2>&1; cat /tmp/output.txt; rm /tmp/output.txt");
  } else {
    system($command);
  }
}
?>
</textarea>
</form>

<hr>
<i>Copyright &copy; 2000, <a
href="mailto:[email protected]">Martin Geisler</a>. Get the latest
version at <a href="http://www.gimpster.com">www.gimpster.com</a>.</i>
</body>
</html>
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