/**
  * Post process (never return)
  *
  */
 private static function abort($validate, $settings, $exist)
 {
     $context = IP_Geo_Block::get_instance();
     // mark as malicious
     $validate['result'] = 'blocked';
     //'malice';
     // (1) blocked, unknown, (3) unauthenticated, (5) all
     if ((int) $settings['validation']['reclogs'] & 1) {
         require_once IP_GEO_BLOCK_PATH . 'classes/class-ip-geo-block-logs.php';
         IP_Geo_Block_Logs::record_log('admin', $validate, $settings);
     }
     // update statistics
     if ($settings['save_statistics']) {
         $context->update_statistics('admin', $validate);
     }
     // send response code to refuse
     $context->send_response('admin', $exist ? $settings['response_code'] : 404);
 }
 /**
  * Ajax callback function
  *
  * @link http://codex.wordpress.org/AJAX_in_Plugins
  * @link http://codex.wordpress.org/Function_Reference/check_ajax_referer
  * @link http://core.trac.wordpress.org/browser/trunk/wp-admin/admin-ajax.php
  */
 public function admin_ajax_callback()
 {
     // Check request origin, nonce, capability.
     if (!check_admin_referer($this->get_ajax_action(), 'nonce') || !current_user_can('manage_options') || empty($_POST)) {
         // @since 2.0
         status_header(403);
         // Forbidden @since 2.0.0
     }
     $which = isset($_POST['which']) ? $_POST['which'] : NULL;
     switch (isset($_POST['cmd']) ? $_POST['cmd'] : NULL) {
         case 'download':
             $res = IP_Geo_Block::download_database();
             break;
         case 'search':
             require_once IP_GEO_BLOCK_PATH . 'classes/class-ip-geo-block-apis.php';
             // check format
             if (filter_var($ip = $_POST['ip'], FILTER_VALIDATE_IP)) {
                 // get option settings and compose request headers
                 $options = IP_Geo_Block::get_option('settings');
                 $args = IP_Geo_Block::get_request_headers($options);
                 // create object for provider and get location
                 if ($geo = IP_Geo_Block_API::get_instance($which, $options)) {
                     $res = $geo->get_location($ip, $args);
                 } else {
                     $res = array('errorMessage' => 'Unknown service.');
                 }
             } else {
                 $res = array('errorMessage' => 'Invalid IP address.');
             }
             break;
         case 'scan-code':
             require_once IP_GEO_BLOCK_PATH . 'classes/class-ip-geo-block-apis.php';
             // scan all the country code using selected APIs
             $ip = IP_Geo_Block::get_ip_address();
             $options = IP_Geo_Block::get_option('settings');
             $args = IP_Geo_Block::get_request_headers($options);
             $type = IP_Geo_Block_Provider::get_providers('type', FALSE, FALSE);
             $providers = IP_Geo_Block_Provider::get_valid_providers($options['providers'], FALSE, FALSE);
             $res['IP address'] = esc_html($ip);
             foreach ($providers as $provider) {
                 if ($geo = IP_Geo_Block_API::get_instance($provider, $options)) {
                     $ret = $geo->get_location($ip, $args);
                     $res[$provider] = array('type' => $type[$provider], 'code' => esc_html(FALSE === $ret ? __('n/a', IP_Geo_Block::TEXT_DOMAIN) : (!empty($ret['errorMessage']) ? $ret['errorMessage'] : (!empty($ret['countryCode']) ? $ret['countryCode'] : __('UNKNOWN', IP_Geo_Block::TEXT_DOMAIN)))));
                 }
             }
             break;
         case 'clear-statistics':
             // set default values
             update_option($this->option_name['statistics'], IP_Geo_Block::get_default('statistics'));
             $res = array('page' => 'options-general.php?page=' . IP_Geo_Block::PLUGIN_SLUG, 'tab' => 'tab=1');
             break;
         case 'clear-cache':
             // delete cache of IP address
             delete_transient(IP_Geo_Block::CACHE_KEY);
             // @since 2.8
             $res = array('page' => 'options-general.php?page=' . IP_Geo_Block::PLUGIN_SLUG, 'tab' => 'tab=1');
             break;
         case 'clear-logs':
             require_once IP_GEO_BLOCK_PATH . 'classes/class-ip-geo-block-logs.php';
             $hook = array('comment', 'login', 'admin', 'xmlrpc');
             $which = in_array($which, $hook) ? $which : NULL;
             IP_Geo_Block_Logs::clean_log($which);
             $res = array('page' => 'options-general.php?page=' . IP_Geo_Block::PLUGIN_SLUG, 'tab' => 'tab=4');
             break;
         case 'restore':
             require_once IP_GEO_BLOCK_PATH . 'includes/localdate.php';
             require_once IP_GEO_BLOCK_PATH . 'classes/class-ip-geo-block-logs.php';
             // if js is slow then limit the number of rows
             $limit = IP_Geo_Block_Logs::limit_rows(@$_POST['time']);
             // compose html with sanitization
             $which = IP_Geo_Block_Logs::restore_log($which);
             foreach ($which as $hook => $rows) {
                 $html = '';
                 $n = 0;
                 foreach ($rows as $logs) {
                     $log = (int) array_shift($logs);
                     $html .= "<tr><td data-value={$log}>";
                     $html .= ip_geo_block_localdate($log, 'Y-m-d H:i:s') . "</td>";
                     foreach ($logs as $log) {
                         $log = esc_html($log);
                         $html .= "<td>{$log}</td>";
                     }
                     $html .= "</tr>";
                     if (++$n >= $limit) {
                         break;
                     }
                 }
                 $res[$hook] = $html;
             }
             break;
         case 'create_table':
         case 'delete_table':
             require_once IP_GEO_BLOCK_PATH . 'classes/class-ip-geo-block-logs.php';
             if ('create_table' === $_POST['cmd']) {
                 IP_Geo_Block_Logs::create_log();
             } else {
                 IP_Geo_Block_Logs::delete_log();
             }
             $res = array('page' => 'options-general.php?page=' . IP_Geo_Block::PLUGIN_SLUG);
     }
     if (isset($res)) {
         // wp_send_json_{success,error}() @since 3.5.0
         wp_send_json($res);
     }
     // @since 3.5.0
     die;
     // End of ajax
 }
 /**
  * Auxiliary validation functions
  *
  */
 public function auth_fail($something = NULL)
 {
     require_once IP_GEO_BLOCK_PATH . 'classes/class-ip-geo-block-apis.php';
     // Count up a number of fails when authentication is failed
     if ($cache = IP_Geo_Block_API_Cache::get_cache($this->remote_addr)) {
         $validate = self::make_validation($this->remote_addr, array('code' => $cache['code'], 'fail' => TRUE, 'result' => 'failed'));
         $settings = self::get_option('settings');
         IP_Geo_Block_API_Cache::update_cache($cache['hook'], $validate, $settings);
         // (1) blocked, (3) unauthenticated, (5) all
         if ((int) $settings['validation']['reclogs'] & 1) {
             require_once IP_GEO_BLOCK_PATH . 'classes/class-ip-geo-block-logs.php';
             IP_Geo_Block_Logs::record_log($cache['hook'], $validate, $settings);
         }
     }
     return $something;
     // pass through
 }