begin making the webhook endpoint

fulcrm_webhook.admin.inc

@@ -33,11 +33,13 @@ function fulcrm_webhook_admin_form( $form, &$form_state ) {
                                      '#collapsed' => FALSE,
                                      'detail' => array( '#type' => 'item',
                                                         '#title' => '',
-                                                        '#markup' => '<p>You need to enable SSL on this Drupal instance to continue.</p><p>fulcrm will only send data to HTTPS webhooks.</p>' ),
+                                                        '#markup' => ( '<p>You need to enable SSL on this Drupal site to continue.</p>' .
+                                                                       '<p>fulcrm will only send data to HTTPS webhooks.</p>' ),
+                                                        ),
                                      );
         $form[ 'actions' ] = array( '#type' => 'actions' );
         $form[ 'actions' ][ 'save' ] = array( '#type' => 'link',
-                                              '#title' => t('Reload'),
+                                              '#title' => t('Reload with SSL'),
                                               '#href' => str_replace( 'http://', 'https://', url( 'admin/config/services/fulcrm/webhook', array( 'absolute' => TRUE ) ) ),
                                               );
     }

fulcrm_webhook.module

@@ -21,12 +21,25 @@ function fulcrm_webhook_menu() {
    */
     $items[ 'admin/config/services/fulcrm/webhook' ] = array( 'page callback' => 'fulcrm_webhook_admin',
                                                               'file' => 'fulcrm_webhook.admin.inc',
-                                                              'title' => 'fulcrm webhook',
-                                                              'description' => 'Configuring webhooks for fulcrm.org.',
+                                                              'title' => 'fulcrm webhooks',
+                                                              'description' => 'Configure webhooks for fulcrm.org.',
                                                               'access callback' => 'user_access',
                                                               'access arguments' => array('administer fulcrm webhooks'),
                                                               );
+    $items[ 'services/fulcrm/webhook/%' ] = array( 'page callback' => 'fulcrm_webhook_webhook',
+                                                   'page arguments' => array(3),
+                                                   'type' => MENU_CALLBACK,
+                                                   'access callback' => 'user_access',
+                                                   'access arguments' => array('access content'),
+                                                   );
 
     return $items;
 }
 
+function fulcrm_webhook_webhook( $uuid ) {
+    if ( $uuid === variable_get( 'fulcrm_webhook_url' ) ) {
+        drupal_json_output( array( 'status' => 'ok' ) );
+    } else {
+        drupal_json_output( array( 'error' => 'incorrect webhook UUID' ) );
+    }
+}