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<?php
namespace CloudflareBypass\Model\UAM;
/**
* Class UAMPageChallengeCode
* - Contains UAM page challenge codes.
* - Part of UAMPageFormParams model.
*
* @package CloudflareBypass\Model
* @author Kyran Rana
*/
class UAMPageChallengeCode
{
/**
* Gets code snippets from UAM page and creates a <pre>UAMPageChallengeCode</pre> object.
*
* @param string $page UAM page
* @return UAMPageChallengeCode Code snippets
*/
public static function getSnippetsFromPage(string $page): UAMPageChallengeCode
{
$challengeCode = self::getChallengeCodeFromPage($page);
$secondaryChallengeCode = self::getSecondaryChallengeCodeFromPage($page, $challengeCode);
$challengeCode = preg_replace("/k = '([^']+)';/", "", $challengeCode);
$challengeCode = str_replace("\n", "", $challengeCode);
$challengeCode = preg_replace("/; +;/", ";", $challengeCode);
return new UAMPageChallengeCode($challengeCode, $secondaryChallengeCode);
}
/**
* Gets challenge code from UAM page.
*
* @param string $page UAM challenge page
* @return string UAM challenge page code
*/
public static function getChallengeCodeFromPage(string $page): string
{
$code = substr($page, strpos($page, 'setTimeout(function(){') + 22);
$code = trim(substr($code, 0, strpos($code, "}, 4000);")));
$code = str_replace("var s,t,o,p,b,r,e,a,k,i,n,g,f, ", "", $code);
$code = preg_replace("/e = function\(s\) {(.|\\n)+?};/", "", $code);
$code = preg_replace("/(t|a|f|r|o|g) = [^;]+;/", "", $code);
$code = str_replace("a.value", "answer", $code);
$code = preg_replace('/t\.innerHTML="[^"]+";/', "", $code);
$code = str_replace(["f.action += location.hash;", "f.submit()"], "", $code);
$code = str_replace("'; 121'", "", $code);
preg_match("/(\w+)={\"([^\"]+)\":/", $code, $matches);
$code = preg_replace("/(\w+)={\"([^\"]+)\":([^}]+)};/", "answer=$3;", $code);
$code = str_replace($matches[1] . '.' . $matches[2], "answer", $code);
$code = trim(str_replace('Function("return escape")()', "escape", $code));
return $code;
}
/**
* Gets secondary challenge code from UAM page (k).
*
* @param string $page UAM page
* @param string $code UAM page challenge code
* @return string Secondary challenge code
*/
public static function getSecondaryChallengeCodeFromPage(string $page, string $code): string
{
preg_match('/k = \'([^\']+)\';/', $code, $kMatches);
preg_match('/id="' . ($kMatches[1] ?? "") . '">([^<]+)</', $page, $kElemMatches);
return $kElemMatches[1] ?? "";
}
// -------------------------------------------------------------------------------------------------------
/**
* Main challenge code
*
* @var string $challengeCode Main challenge code
*/
private $challengeCode;
/**
* Secondary challenge code (k)
*
* @var string $secondaryChallengeCode Secondary c hallenge code
*/
private $secondaryChallengeCode;
public function __construct(string $challengeCode, string $secondaryChallengeCode)
{
$this->challengeCode = $challengeCode;
$this->secondaryChallengeCode = $secondaryChallengeCode;
}
/**
* Gets main challenge code
*
* @return string Main challenge code
*/
public function getChallengeCode(): string
{
return $this->challengeCode;
}
/**
* Gets secondary challenge code (k).
*
* @return string Secondary challenge code.
*/
public function getSecondaryChallengeCode(): string
{
return $this->secondaryChallengeCode;
}
}