<?php
// $Id: adminrole.module,v 1.2.2.8.2.9 2009/11/25 20:44:54 davereid Exp $

/**
 * @file
 * This module simply gives a designated role all permissions every time the
 * modules page is submitted.
 */

/**
 * Implement hook_form_FORM_ID_alter().
 */
function adminrole_form_user_admin_settings_alter(&$form, $form_state) {
  // Administrative role option.
  $form['admin_role'] = array(
    '#type' => 'fieldset',
    '#title' => t('Administrator role'),
  );

  // Do not allow users to set the anonymous or authenticated user roles as the
  // administrator role.
  $roles = user_roles();
  unset($roles[DRUPAL_ANONYMOUS_RID]);
  unset($roles[DRUPAL_AUTHENTICATED_RID]);

  $form['admin_role']['user_admin_role'] = array(
    '#type' => 'select',
    '#title' => t('Administrator role'),
    '#default_value' => variable_get('user_admin_role', 0),
    '#options' => array(0 => t('Disabled')) + $roles,
    '#description' => t('This role will be automatically assigned new permissions whenever a module is enabled.'),
  );

  // Ensure the save/reset buttons have a lower weight than our fieldset.
  $form['buttons'] += array('#weight' => 100);
}

/**
 * Implement hook_form_alter().
 */
function adminrole_form_alter(&$form, $form_state, $form_id) {
  if (in_array($form_id, array('system_modules', 'user_admin_settings', 'node_type_form', 'content_field_overview_form'))) {
    $form['#submit'][] = 'adminrole_update_permissions';
  }
}

/**
 * Update the admin role with all current available permissions.
 */
function adminrole_update_permissions() {
  if ($rid = variable_get('user_admin_role', 0)) {
    $perms = module_invoke_all('perm');
    db_query('DELETE FROM {permission} WHERE rid = %d', $rid);
    if ($perms) {
      db_query("INSERT INTO {permission} (rid, perm) VALUES (%d, '%s')", $rid, implode(', ', $perms));
    }
  }
}