recapcha

capchaimg.php

<?php 
use My\Project\Classes\Recaptcha;

function onStart()
{
        
    $prefix     = Input::get("px");
    $charSize   = Input::get("cs",6);
    $width      = Input::get("w",80);
    $height     = Input::get("h",38);
    
    $charList   = "ABCDEFGHKLMNPRSTUVYZWXQ123456789";
    
    return Response::make(Recaptcha::instance()->generateImg($prefix, $charList, $charSize, $width, $height))
            ->header('Content-Type', "image/png");
}

custom.js

$(".guvrefresh").off("click").on("click",function () {
    var targetimg = $($(this).data("guvimg"));
    var imgSrc = $(targetimg).data("src");
    var newSrc = imgSrc+"&cr="+Math.floor(Math.random() * 100000) + 1;
    $(targetimg).attr("src", newSrc);
});

Recaptcha.php

<?php
/**
 * Created by PhpStorm.
 * User: xubuntu2045
 * Date: 20.04.2018
 * Time: 11:45
 */

namespace Sarki\Project\Classes;

use Log;
use Session;
use Response;
use My\Project\Classes\Translate;
use My\Project\Traits\Helper;
use October\Rain\Exception\ApplicationException;
use October\Rain\Support\Traits\Singleton;
use My\Project\Classes\Curl;
use Cms\Classes\Controller;
use My\Project\Models\Projectsettings as Framesettings;

class Recaptcha
{

    use Singleton, Helper;

    public
        $verifyUrl   = "https://www.google.com/recaptcha/api/siteverify?",
        $jsUrl       = "https://www.google.com/recaptcha/api.js";

    public $captchaPage, $captcha_type = 'localimg';

    private
        $secret     = "****************************",
        $sitekey    = "****************************";

    public function init()
    {
        //$this->secret       = Framesettings::get("captcha_secretkey");
        //$this->sitekey      = Framesettings::get("captcha_sitekey");

        $this->captchaPage  = "localimg"; //Framesettings::get("captcha_img_page");
    }

    public function getCaptchaType()
    {
        //return Framesettings::get("captcha_type");
    }

    public function getSiteKey()
    {
        return $this->sitekey;
    }

    public function getHtml($elementID)
    {
        //throw new ApplicationException(Framesettings::get("captcha_type"));

        if($this->captcha_type == "google")
        {
            return '<div id="'.$elementID.'" data-size="normal" data-theme="dark" class="g-recaptcha" data-sitekey="'.$this->getSiteKey().'"></div>';
        }
        elseif($this->captcha_type == "localimg")
        {
            //$imgUrl = Controller::getController()->pageUrl($this->captchaPage) . "?px=" . $elementID;

            Session::put("captchaPrefix", $elementID);

            $htmlCode = '<div id="' . $elementID . '" class="row">';
            $htmlCode .= '<div class="col-sm-4">';
            $htmlCode .= '<div class="imgparent bgDark">';
            $htmlCode .= '<span id="'.$elementID.'imgparent">'.$this->localeImg($elementID).'</span>';
            $htmlCode .= '<button type="button" class="btn info guvrefresh float-right" data-guvimg="#'.$elementID.'cardguvimg"><i class="fa fa-refresh"></i></button></div></div>';
            $htmlCode .= '<div class="formparent col-sm-8"><input type="text" id="'.$elementID.'cardguvtext" name="g-recaptcha-response" class="form-control" placeholder="' . Translate::getTranslate("Resimdeki Kodu giriniz.") . '"></div>';
            $htmlCode .= '</div>';
            return $htmlCode;
        }
    }

    public function localeImg($elementID)
    {
        //burda gorsel için ellenen http url adresi lazım altta  capchaimg.php olarak ekledim ona giden http url adresi
        $imgUrl = Controller::getController()->pageUrl($this->captchaPage)."?px=".$elementID;
        $imgUrl = Http::instance()->redirectUrl($imgUrl);
        return '<img id="'.$elementID.'cardguvimg" data-src="'.$imgUrl.'" data-prefix="'.$elementID.'" src="'.$imgUrl.'&cr='.rand(1000, 9999999).'" alt="security code">';
    }

    public function getJsUrl()
    {
        return $this->jsUrl;
    }

    public function addJs($control)
    {
        if($this->captcha_type == "google")
        {
            $control->addJs($this->jsUrl);
        }
    }

    public function check($g_recaptcha_response)
    {
        /*
        $response = json_decode(
                        file_get_contents(
                            "https://www.google.com/recaptcha/api/siteverify?secret=".Settings::get('secret_key')."&response=".post('g-recaptcha-response')."&remoteip=".$_SERVER['REMOTE_ADDR']
                        ),
                        true
                    );
        */

        if($this->captcha_type == "google")
        {
            $query = $this->verifyUrl . "secret=" . $this->secret . "&response=" . $g_recaptcha_response . "&remoteip=" . $_SERVER['REMOTE_ADDR'];
            $response = file_get_contents($query);
            //$response = Curl::instance()->getUrl($query);
            $responseArray = json_decode($response, true);

            if(empty($responseArray['success']))
            {
                return false;
            }

            //return $responseArray['success'] != false;
            return $responseArray['success'] == false ? false : true;
        }
        elseif($this->captcha_type == "localimg")
        {
            $guvPrefixCode = Session::get("captchaPrefix");

            if(empty($guvPrefixCode))
            {
                return false;
            }

//            $all = Session::all();
//            Log::debug(json_encode($all));

            $guvCode = Session::get($guvPrefixCode."Captcha");

            if(empty($guvCode))
            {
                return false;
            }

            if($guvCode == $g_recaptcha_response)
            {
                return true;
            }
        }

        return  false;
    }

    public function randomkey($charList = "AaBbCcDdEeFfGgHhKkLlMmNnOoPpRrSsTtUuVvYyZzWwXxQq0123456789", $limit = 8)
    {

        if(!is_array($charList))
        {
            $charList = str_split($charList);
        }

        $k = [];

        for ($i = 0; $i < $limit; $i++)
        {
            $k[] = $charList[array_rand($charList)];
        }
        return implode('',$k);
    }

    //generator random img

    public function generateImg($sessionIndexPrefix = 'guv', $charList = "AaBbCcDdEeFfGgHhKkLlMmNnOoPpRrSsTtUuVvYyZzWwXxQq0123456789", $charSize = 6, $width = 80, $height = 30)
    {
        if($charSize < 6)
        {
            $charSize = 6;
        }

        $str    = strtoupper($this->randomkey($charList, $charSize));
        Session::put($sessionIndexPrefix."Captcha", $str);

        $img    = ImageCreate($width, $height);

        $white  = ImageColorAllocate($img, 255, 255, 255);

        $black  = ImageColorAllocate($img, 0, 0, 0);

        ImageFill($img, 0, 0, $black);

        ImageString($img, 12, 10, 7, $str, $white);

        ImageLine($img, $width, ($height - 5), 0, ($height - 8), $white);

        header("Content-type: image/png");

        ImagePng($img);

        ImageDestroy($img);
    }
}

use.md

view

echo Recaptcha::instance()->getHtml('contactForm');
echo Recaptcha::instance()->getHtml('commentForm');

check

if(!Recaptcha::instance()->check(input("g-recaptcha-response"))){
  //err
}