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civihoneypot.php
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civihoneypot.php
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<?php
require_once 'civihoneypot.civix.php';
const HONEYPOT_SETTINGS = 'honeypot';
use CRM_Civihoneypot_ExtensionUtil as E;
/**
* Retrieve honeypot settings individually
*/
function _getHoneypotValues() {
$values = [];
//this can't be right but I don't understand the fragmented documentation at all
$settings = ['honeypot_form_ids', 'honeypot_protect_all', 'honeypot_field_names', 'honeypot_limit', 'honeypot_ipban', 'honeypot_event_ids', 'honeypot_protect_all_events'];
foreach ($settings as $setting) {
$values[$setting] = Civi::settings()->get($setting);
}
foreach (['honeypot_form_ids', 'honeypot_field_names', 'honeypot_ipban', 'honeypot_event_ids'] as $field) {
if (!empty($values[$field])) {
$values[$field] = explode(',', $values[$field]);
}
}
return $values;
}
/**
* Implements hook_civicrm_buildForm().
*
*/
function civihoneypot_civicrm_buildForm($formName, &$form) {
$settings = _getHoneypotValues();
$protect = FALSE;
if ($formName == 'CRM_Contribute_Form_Contribution_Main' &&
($settings['honeypot_protect_all'] == "1" || (in_array($form->getVar('_id'), $settings['honeypot_form_ids'] ?? [])))
) {
$protect = TRUE;
}
if ($formName == 'CRM_Event_Form_Registration_Register' &&
($settings['honeypot_protect_all_events'] == "1" || (in_array($form->getVar('_id'), $settings['honeypot_event_ids'] ?? [])))
) {
$protect = TRUE;
}
if ($protect) {
$deny = $settings['honeypot_ipban'] ?? [];
if ($deny) {
$remote = $_SERVER['REMOTE_ADDR'];
$parts = explode(".", $remote);
if (count($parts)) {
$wilds = array(
sprintf('%s.*', $parts[0]),
);
if (!empty($parts[1])) {
$wilds[] = sprintf('%s.%s.*', $parts[0], $parts[1]);
}
if (!empty($parts[2])) {
$wilds[] = sprintf('%s.%s.%s.*', $parts[0], $parts[1], $parts[2]);
}
if (in_array($remote, $deny) || (bool) array_intersect($wilds, $deny)) {
CRM_Core_Error::fatal(ts('Banned IP was denied access to a CiviCRM Contribution Form.'));
}
}
}
$timestamp = $_SERVER['REQUEST_TIME'];
$fieldname = $settings['honeypot_field_names'] ?? NULL;
if (!empty($fieldname)) {
$max = count($fieldname) - 1;
$randfieldname = $fieldname[rand(0, $max)];
// Assumes templates are in a templates folder relative to this file
$templatePath = realpath(dirname(__FILE__) . "/templates");
$template = CRM_Core_Smarty::singleton();
$template->assign_by_ref('fieldname', $randfieldname);
$template->assign_by_ref('timestamp', $timestamp);
// Add the field element in the form
$form->addElement('text', $randfieldname, $randfieldname);
$form->addElement('text', 'timestamp', 'timestamp');
// dynamically insert a template block in the page
CRM_Core_Region::instance('page-body')->add(array(
'template' => "civihoneypot.tpl",
));
}
}
}
/**
* Implements hook_civicrm_validateForm().
*
*/
function civihoneypot_civicrm_validateForm($formName, &$fields, &$files, &$form, &$errors) {
$settings = _getHoneypotValues();
//check for honeypot field values from randomized fields
$protect = FALSE;
if ($formName == 'CRM_Contribute_Form_Contribution_Main' &&
($settings['honeypot_protect_all'] == "1" || (in_array($form->getVar('_id'), $settings['honeypot_form_ids'] ?? [])))
) {
$protect = TRUE;
}
if ($formName == 'CRM_Event_Form_Registration_Register' &&
($settings['honeypot_protect_all_events'] == "1" || (in_array($form->getVar('_id'), $settings['honeypot_event_ids'] ?? [])))
) {
$protect = TRUE;
}
if ($protect) {
if ($limit = ($settings['honeypot_limit'] ?? NULL)) {
$delay = ($_SERVER['REQUEST_TIME'] - $fields['timestamp']);
if ($delay < $limit) {
$errors['_qf_default'] = ts('User submitted a CiviCRM form too quickly');
}
}
$fieldnames = $settings['honeypot_field_names'] ?? [];
foreach ($fields as $key => $value) {
if (in_array($key, $fieldnames) && $value) {
$errors['_qf_default'] = ts('User filled in hidden field');
}
}
}
}
/**
* Implements hook_civicrm_config().
*
* @link http://wiki.civicrm.org/confluence/display/CRMDOC/hook_civicrm_config
*/
function civihoneypot_civicrm_config(&$config) {
_civihoneypot_civix_civicrm_config($config);
}
/**
* Implements hook_civicrm_install().
*
* @link http://wiki.civicrm.org/confluence/display/CRMDOC/hook_civicrm_install
*/
function civihoneypot_civicrm_install() {
_civihoneypot_civix_civicrm_install();
}
/**
* Implements hook_civicrm_enable().
*
* @link http://wiki.civicrm.org/confluence/display/CRMDOC/hook_civicrm_enable
*/
function civihoneypot_civicrm_enable() {
_civihoneypot_civix_civicrm_enable();
}
// --- Functions below this ship commented out. Uncomment as required. ---
/**
* Implements hook_civicrm_preProcess().
*
* @link http://wiki.civicrm.org/confluence/display/CRMDOC/hook_civicrm_preProcess
*
*/
/**
* Implements hook_civicrm_navigationMenu().
*
* @link http://wiki.civicrm.org/confluence/display/CRMDOC/hook_civicrm_navigationMenu
*
*/
function civihoneypot_civicrm_navigationMenu(&$menu) {
_civihoneypot_civix_insert_navigation_menu($menu, 'Administer', [
'label' => E::ts('Honeypot Settings'),
'name' => 'Honeypot Settings',
'url' => 'civicrm/honeypot/settings',
'permission' => 'administer CiviCRM',
'operator' => 'OR',
'separator' => 1,
]);
_civihoneypot_civix_navigationMenu($menu);
}