fulcrm_webhook/fulcrm_webhook.admin.inc

<?php

function fulcrm_webhook_admin_form_submit( $form, &$form_state ) {
}

function fulcrm_webhook_admin_form( $form, &$form_state ) {
    global $is_https;

    $form[ 'title' ] = array( '#type' => 'item',
                              '#title' => 'fulcrm webhook Settings',
                              '#description' => '',
                              );

    if ( $is_https ) {
        $form[ 'webhook_url' ] = array( '#type' => 'textfield',
                                        '#disabled' => TRUE,
                                        '#title' => 'Webhook URL (to be registered with fulcrm)',
                                        '#default_value' => url( 'services/fulcrm/webhook/' . variable_get( 'fulcrm_webhook_url' ), array( 'absolute' => TRUE, 'https' => TRUE ) ),
                                        '#size' => 150,
                                        '#max_length' => 200,
                                        '#required' => FALSE,
                                        );

        $form[ 'actions' ] = array( '#type' => 'actions' );
        $form[ 'actions' ][ 'save' ] = array( '#type' => 'submit',
                                              '#value' => t('Save'),
                                              '#submit' => array( 'fulcrm_webhook_admin_form_submit' ),
                                              );
    } else {
        $form[ 'no_https' ] = array( '#type' => 'fieldset',
                                     '#title' => 'HTTPS Missing!',
                                     '#collapsible' => FALSE,
                                     '#collapsed' => FALSE,
                                     'detail' => array( '#type' => 'item',
                                                        '#title' => '',
                                                        '#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 with SSL'),
                                              '#href' => str_replace( 'http://', 'https://', url( 'admin/config/services/fulcrm/webhook', array( 'absolute' => TRUE ) ) ),
                                              );
    }

    return $form;
}

function fulcrm_webhook_admin() {
    return drupal_get_form( 'fulcrm_webhook_admin_form' );
}