7788aebe83
Reuse updateCaptcha() function Inject Captcha class using DI Add no-cache headers to captcha image Fix an error when accessing the captcha page directly Edit the line in settings regarding missing dependencies
106 lines
3.0 KiB
PHP
106 lines
3.0 KiB
PHP
<?php
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namespace MailPoet\Subscription;
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use MailPoet\Models\Subscriber;
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use MailPoet\Models\SubscriberIP;
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use MailPoet\Util\Helpers;
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use MailPoet\WP\Functions as WPFunctions;
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use MailPoetVendor\Gregwar\Captcha\CaptchaBuilder;
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class Captcha {
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const TYPE_BUILTIN = 'built-in';
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const TYPE_RECAPTCHA = 'recaptcha';
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const TYPE_DISABLED = null;
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const SESSION_KEY = 'mailpoet_captcha';
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const SESSION_FORM_KEY = 'mailpoet_captcha_form';
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/** @var WPFunctions */
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private $wp;
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function __construct(WPFunctions $wp = null) {
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if ($wp === null) {
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$wp = new WPFunctions;
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}
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$this->wp = $wp;
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}
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function isSupported() {
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return extension_loaded('gd') && function_exists('imagettftext');
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}
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function isRequired($subscriber_email = null) {
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if ($this->wp->isUserLoggedIn()) {
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return false;
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}
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// Check limits per recipient
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$subscription_captcha_recipient_limit = $this->wp->applyFilters('mailpoet_subscription_captcha_recipient_limit', 1);
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if ($subscriber_email) {
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$subscriber = Subscriber::where('email', $subscriber_email)->findOne();
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if ($subscriber instanceof Subscriber
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&& $subscriber->count_confirmations >= $subscription_captcha_recipient_limit
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) {
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return true;
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}
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}
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// Check limits per IP address
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$subscription_captcha_window = $this->wp->applyFilters('mailpoet_subscription_captcha_window', MONTH_IN_SECONDS);
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$subscriber_ip = Helpers::getIP();
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if (!empty($subscriber_ip)) {
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$subscription_count = SubscriberIP::where('ip', $subscriber_ip)
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->whereRaw(
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'(`created_at` >= NOW() - INTERVAL ? SECOND)',
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[(int)$subscription_captcha_window]
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)->count();
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if ($subscription_count > 0) {
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return true;
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}
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}
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return false;
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}
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function renderImage($width = null, $height = null, $return = false) {
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if (!$this->isSupported()) {
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return false;
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}
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$font_numbers = array_merge(range(0, 3), [5]); // skip font #4
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$font_number = $font_numbers[mt_rand(0, count($font_numbers) - 1)];
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$reflector = new \ReflectionClass(CaptchaBuilder::class);
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$captcha_directory = dirname($reflector->getFileName());
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$font = $captcha_directory . '/Font/captcha' . $font_number . '.ttf';
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$builder = CaptchaBuilder::create()
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->setBackgroundColor(255, 255, 255)
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->setTextColor(1, 1, 1)
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->setMaxBehindLines(0)
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->build($width ?: 220, $height ?: 60, $font);
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$_SESSION[self::SESSION_KEY] = $builder->getPhrase();
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if ($return) {
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return $builder->get();
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}
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header("Expires: Sat, 01 Jan 2019 01:00:00 GMT"); // time in the past
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header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
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header("Cache-Control: no-store, no-cache, must-revalidate");
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header("Cache-Control: post-check=0, pre-check=0", false);
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header("Pragma: no-cache");
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header('X-Cache-Enabled: False');
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header('X-LiteSpeed-Cache-Control: no-cache');
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header('Content-Type: image/jpeg');
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$builder->output();
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exit;
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}
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}
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