testing

AphrontFormRecaptchaControl.php
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			<?php

			/**
			*
			* @phutil-external-symbol function recaptcha_get_html
			* @phutil-external-symbol function recaptcha_check_answer
			*/
			final class AphrontFormRecaptchaControl extends AphrontFormControl {

			protected function getCustomControlClass() {
			return 'aphront-form-control-recaptcha';
			}

			protected function shouldRender() {
			return self::isRecaptchaEnabled();
			}

			public static function isRecaptchaEnabled() {
			return PhabricatorEnv::getEnvConfig('recaptcha.enabled');
			}

			private static function requireLib() {
			$root = phutil_get_library_root('phabricator');
			require_once dirname($root).'/externals/recaptcha/recaptchalib.php';
			}

			public static function hasCaptchaResponse(AphrontRequest $request) {
			return $request->getBool('recaptcha_response_field');
			}

			public static function processCaptcha(AphrontRequest $request) {
			if (!self::isRecaptchaEnabled()) {
			return true;
			}

			self::requireLib();

			$challenge = $request->getStr('recaptcha_challenge_field');
			$response = $request->getStr('recaptcha_response_field');
			$resp = recaptcha_check_answer(
			PhabricatorEnv::getEnvConfig('recaptcha.private-key'),
			$_SERVER['REMOTE_ADDR'],
			$challenge,
			$response);

			return (bool)@$resp->is_valid;
			}

			protected function renderInput() {
			self::requireLib();

			$uri = new PhutilURI(PhabricatorEnv::getEnvConfig('phabricator.base-uri'));
			$protocol = $uri->getProtocol();
			$use_ssl = ($protocol == 'https');

			return phutil_safe_html(recaptcha_get_html(
			PhabricatorEnv::getEnvConfig('recaptcha.public-key'),
			$error = null,
			$use_ssl));
			}

			}