Afform - Add support for ReCaptcha v2

ext/recaptcha/CRM/Utils/ReCAPTCHA.php

@@ -196,17 +196,27 @@ public static function checkAndAddCaptchaToForm($formName, &$form) {
   }
 
   /**
+   * QuickForm validate callback
+   *
    * @param $value
    * @param CRM_Core_Form $form
    *
    * @return mixed
    */
   public static function validate($value, $form) {
+    return self::checkResponse($_POST['g-recaptcha-response']);
+  }
+
+  /**
+   * @param string $response
+   * @return bool
+   */
+  public static function checkResponse($response) {
     require_once E::path('lib/recaptcha/recaptchalib.php');
 
     $resp = recaptcha_check_answer(CRM_Core_Config::singleton()->recaptchaPrivateKey,
       $_SERVER['REMOTE_ADDR'],
-      $_POST['g-recaptcha-response']
+      $response
     );
     return $resp->is_valid;
   }

ext/recaptcha/Civi/AfformReCaptcha2.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace Civi;
+
+use CRM_Recaptcha_ExtensionUtil as E;
+use Civi\Afform\AHQ;
+use Civi\Afform\Event\AfformValidateEvent;
+use Civi\Core\Event\GenericHookEvent;
+use Civi\Core\Service\AutoService;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * Provides ReCaptcha2 validation element to Afform
+ * @internal
+ * @service
+ */
+class AfformReCaptcha2 extends AutoService implements EventSubscriberInterface {
+
+  /**
+   * @return array
+   */
+  public static function getSubscribedEvents() {
+    return [
+      'civi.afform_admin.metadata' => ['onAfformGetMetadata'],
+      'hook_civicrm_alterAngular' => ['alterAngular'],
+      'civi.afform.validate' => ['onAfformValidate'],
+    ];
+  }
+
+  public static function onAfformGetMetadata(GenericHookEvent $event) {
+    $event->elements['recaptcha2'] = [
+      'title' => E::ts('ReCaptcha2'),
+      'afform_type' => ['form'],
+      'directive' => 'crm-recaptcha2',
+      'admin_tpl' => '~/afGuiRecaptcha2/afGuiRecaptcha2.html',
+      'element' => [
+        '#tag' => 'crm-recaptcha2',
+      ],
+    ];
+  }
+
+  public static function alterAngular(GenericHookEvent $event) {
+    $changeSet = \Civi\Angular\ChangeSet::create('reCaptcha2')
+      ->alterHtml(';\\.aff\\.html$;', function($doc, $path) {
+        // Add publicKey to recaptcha elements
+        foreach (pq('crm-recaptcha2') as $captcha) {
+          $recaptchaPublicKey = \Civi\Api4\Setting::get(FALSE)
+            ->addSelect('recaptchaPublicKey')
+            ->execute()->first()['value'];
+          pq($captcha)->attr('recaptchakey', $recaptchaPublicKey ?: 'foo');
+        }
+      });
+    $event->angular->add($changeSet);
+  }
+
+  public static function onAfformValidate(AfformValidateEvent $event) {
+    $layout = AHQ::makeRoot($event->getAfform()['layout']);
+    if (AHQ::getTags($layout, 'crm-recaptcha2')) {
+      $response = $event->getApiRequest()->getValues()['extra']['recaptcha2'] ?? NULL;
+      if (!isset($response) || !\CRM_Utils_ReCAPTCHA::checkResponse($response)) {
+        $event->setError(E::ts('Please go back and complete the CAPTCHA at the bottom of this form.'));
+      }
+    }
+  }
+
+}

ext/recaptcha/ang/afGuiRecaptcha2.ang.php

@@ -0,0 +1,17 @@
+<?php
+// Module for editing ReCaptcha2 element in the AfformAdmin GUI
+return [
+  'js' => [
+    'ang/afGuiRecaptcha2.module.js',
+    'ang/afGuiRecaptcha2/*.js',
+  ],
+  'partials' => [
+    'ang/afGuiRecaptcha2',
+  ],
+  'css' => ['ang/css/afGuiRecaptcha2.css'],
+  // Ensure module is loaded on the afform_admin GUI page
+  'basePages' => ['civicrm/admin/afform'],
+  'requires' => [],
+  'bundles' => [],
+  'exports' => [],
+];

ext/recaptcha/ang/afGuiRecaptcha2.module.js

@@ -0,0 +1,3 @@
+(function(angular, $, _) {
+  angular.module('afGuiRecaptcha2', CRM.angRequires('afGuiRecaptcha2'));
+})(angular, CRM.$, CRM._);

ext/recaptcha/ang/afGuiRecaptcha2/afGuiRecaptcha2-menu.html

@@ -0,0 +1,10 @@
+<li>
+  <a href ng-click="$ctrl.node.recaptchatheme = ($ctrl.node.recaptchatheme === 'dark' ? 'light' : 'dark'); $event.stopPropagation();">
+    {{:: ts('Light') }}
+    <i class="crm-i fa-toggle-{{ $ctrl.node.recaptchatheme === 'dark' ? 'on' : 'off' }}"></i>
+    {{:: ts('Dark') }}
+  </a>
+</li>
+<li role="separator" class="divider">
+</li>
+<li><a href ng-click="$ctrl.deleteThis()"><span class="text-danger"><i class="crm-i fa-trash"></i> {{:: ts('Remove ReCaptcha') }}</span></a></li>

ext/recaptcha/ang/afGuiRecaptcha2/afGuiRecaptcha2.html

@@ -0,0 +1,14 @@
+<div class="af-gui-element">
+  <div class="af-gui-bar">
+    <div class="form-inline pull-right">
+      <div class="btn-group pull-right" af-gui-menu>
+        <button type="button" class="btn btn-default btn-xs dropdown-toggle af-gui-add-element-button" data-toggle="dropdown" title="{{:: ts('Configure') }}">
+          <span><i class="crm-i fa-gear"></i></span>
+        </button>
+        <ul class="dropdown-menu" ng-if="menu.open" ng-include="'~/afGuiRecaptcha2/afGuiRecaptcha2-menu.html'"></ul>
+      </div>
+    </div>
+  </div>
+  <div class="af-gui-recaptcha2-placeholder" ng-class="{rc2dark: $ctrl.node.recaptchatheme === 'dark'}"></div>
+</div>
+

ext/recaptcha/ang/crmRecaptcha2.ang.php

@@ -0,0 +1,19 @@
+<?php
+// Module for recaptcha2 Afform element
+return [
+  'js' => [
+    'ang/crmRecaptcha2.module.js',
+    'ang/crmRecaptcha2/*.js',
+  ],
+  'partials' => [
+    'ang/crmRecaptcha2',
+  ],
+  'css' => [],
+  'basePages' => [],
+  'requires' => [],
+  'bundles' => [],
+  'exports' => [
+    // This triggers Afform to automatically require this module on forms using recaptcha2
+    'crm-recaptcha2' => 'E',
+  ],
+];

ext/recaptcha/ang/crmRecaptcha2.module.js

@@ -0,0 +1,3 @@
+(function(angular, $, _) {
+  angular.module('crmRecaptcha2', CRM.angRequires('crmRecaptcha2'));
+})(angular, CRM.$, CRM._);

ext/recaptcha/ang/crmRecaptcha2/crmRecaptcha2.component.js

@@ -0,0 +1,28 @@
+(function(angular, $, _) {
+  angular.module('crmRecaptcha2').component('crmRecaptcha2', {
+    templateUrl: '~/crmRecaptcha2/crmRecaptcha2.html',
+    bindings: {
+      recaptchakey: '@',
+      recaptchatheme: '@',
+    },
+    require: {
+      afForm: '^^',
+    },
+    controller: function($scope, $element) {
+      var ctrl = this;
+
+      this.$onInit = function() {
+        this.recaptchatheme = this.recaptchatheme || 'light';
+
+        // Global callback because recaptcha can't directly call angular functions
+        window.crmRecaptcha2Change = function(response) {
+          $scope.$apply(function() {
+            // Add response to form data
+            var extra = ctrl.afForm.getData('extra');
+            extra.recaptcha2 = response;
+          });
+        };
+      };
+    }
+  });
+})(angular, CRM.$, CRM._);

ext/recaptcha/ang/crmRecaptcha2/crmRecaptcha2.html

@@ -0,0 +1,2 @@
+<script src="https://www.google.com/recaptcha/api.js" async defer></script>
+<div class="g-recaptcha" data-sitekey="{{:: $ctrl.recaptchakey }}" data-theme="{{:: $ctrl.recaptchatheme }}" data-callback="crmRecaptcha2Change"></div>

ext/recaptcha/ang/css/afGuiRecaptcha2.css

@@ -0,0 +1,12 @@
+div.af-gui-recaptcha2-placeholder {
+  width: 305px;
+  height: 76px;
+  opacity: .85;
+  background-image: url('rc2-light.png');
+  background-size: contain;
+  background-repeat: no-repeat;
+  background-position: center;
+}
+div.af-gui-recaptcha2-placeholder.rc2dark {
+  background-image: url('rc2-dark.png');
+}

ext/recaptcha/info.xml

@@ -28,6 +28,8 @@
   <mixins>
     <mixin>menu-xml@1.0.0</mixin>
     <mixin>setting-php@1.0.0</mixin>
+    <mixin>ang-php@1.0.0</mixin>
+    <mixin>scan-classes@1.0.0</mixin>
   </mixins>
   <civix>
     <namespace>CRM/Recaptcha</namespace>