<?php
/*
Plugin Name: Crazy Bone
Plugin URI: https://github.com/wokamoto/crazy-bone
Description: Tracks user name, time of login, IP address and browser user agent.
Author: wokamoto
Version: 0.6.0
Author URI: http://dogmap.jp/
Text Domain: user-login-log
Domain Path: /languages/

License:
 Released under the GPL license
  http://www.gnu.org/copyleft/gpl.html

  Copyright 2013-2015 (email : wokamoto1973@gmail.com)

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/
if (!class_exists('DetectBrowsersController'))
	require_once( dirname(__FILE__) . '/includes/detect_browsers.php' );
if (!class_exists('DetectCountriesController'))
	require_once( dirname(__FILE__) . '/includes/detect_countries.php' );

$crazy_bone = crazy_bone::get_instance();
$crazy_bone->init();
$crazy_bone->add_action();

register_activation_hook(__FILE__, array($crazy_bone, 'activate'));
register_deactivation_hook(__FILE__, array($crazy_bone, 'deactivate'));

load_plugin_textdomain(crazy_bone::TEXT_DOMAIN, false, dirname(plugin_basename(__FILE__)) . '/languages/');

class crazy_bone {
	const USER_META_KEY = 'user_login_log';
	const TEXT_DOMAIN   = 'user-login-log';
	const LIST_PER_PAGE = 20;
	const DEBUG_MODE    = false;
	const OPTION_NAME   = 'user-login-log';

	const ADMIN_MENU_CAPABILITY = 'level_0';

	const SEC_MINUITE   = 60;
	const SEC_HOUR      = 3600;
	const SEC_DAY       = 86400;
	const SEC_MONTH     = 2592000;
	const SEC_YEAR      = 31536000;

	private $ull_table = 'user_login_log';
	private $admin_action;
	private $plugin_version;
	private $options;

	static $instance;

	private function __construct() {}

	public static function get_instance() {
		if( !isset( self::$instance ) ) {
			$c = __CLASS__;
			self::$instance = new $c();
		}

		return self::$instance;
	}

	// initialize
	public function init(){
		global $wpdb;

		self::$instance = $this;

		$this->ull_table = $wpdb->prefix.$this->ull_table;
		$this->admin_action = admin_url('profile.php') . '?page=' . plugin_basename(__FILE__);

		$data = get_file_data(__FILE__, array('version' => 'Version'));
		$this->plugin_version = isset($data['version']) ? $data['version'] : '';

		$this->options = get_option( self::OPTION_NAME, array() );
		if (!is_array($this->options))
			$this->options = array('installed' => false);
		if (!isset($this->options['installed']) || !$this->options['installed'])
			$this->activate();
	}

	// added action
	public function add_action(){
		add_action('wp_login', array($this, 'user_login_log'), 10, 2);
		add_action('wp_authenticate', array($this, 'wp_authenticate_log'), 10, 2);
		add_action('login_form_logout', array($this, 'user_logout_log'));
		add_action('auth_cookie_expired', array($this, 'cookie_expired_log'), 10, 2);
		add_action('auth_cookie_bad_hash', array($this, 'cookie_bad_hash_log'), 10, 2);

		add_action('admin_enqueue_scripts', array($this,'enqueue_scripts'));
		add_action('wp_enqueue_scripts', array($this,'enqueue_scripts'));

		add_action('admin_bar_init',  array($this, 'admin_bar_init'), 9999);
		add_action('admin_menu', array($this,'add_admin_menu'));

		add_action('wp_ajax_ull_info', array($this, 'ajax_info'));
		add_action('wp_ajax_nopriv_ull_info', array($this, 'ajax_info'));

		add_action('wp_ajax_dismiss-ull-wp-pointer', array($this, 'ajax_dismiss'));
		add_action('wp_ajax_nopriv_dismiss-ull-wp-pointer', array($this, 'ajax_dismiss'));
	}

	public function activate(){
		global $wpdb;

		if (isset($this->options['installed']) && $this->options['installed'])
			return;

		if ($wpdb->get_var("show tables like '{$this->ull_table}'") != $this->ull_table)
			$this->create_table();
	}

	public function deactivate(){
		delete_option( self::OPTION_NAME );
	}

	private function create_table(){
		global $wpdb;

		if ($wpdb->get_var("show tables like '{$this->ull_table}'") != $this->ull_table) {
			$wpdb->query("
CREATE TABLE `{$this->ull_table}` (
 `ID` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
 `user_id` bigint(20) unsigned NOT NULL DEFAULT 0,
 `activity_status` varchar(255) NOT NULL,
 `activity_date` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
 `activity_agent` varchar(255) NOT NULL,
 `activity_IP` varchar(100) NOT NULL,
 `activity_errors` text NULL,
 `country_name` varchar(100) NULL,
 `country_code` varchar(10) NULL,
 PRIMARY KEY (`ID`),
 KEY `user_id` (`user_id`),
 KEY `activity_status` (`activity_status`),
 KEY `activity_date` (`activity_date`),
 KEY `country_code` (`country_code`)
)");
		}

		$this->options['installed'] = true;
		update_option( self::OPTION_NAME, $this->options );
	}

	public function enqueue_scripts(){
		if (!is_user_logged_in())
			return;

		wp_enqueue_style('wp-pointer');
		wp_enqueue_script('jquery');
		wp_enqueue_script('wp-pointer', array('jquery'));
	}

	public function admin_bar_init() {
		add_action('admin_bar_menu',  array($this, 'customize_admin_bar_menu'), 9999);
		wp_enqueue_style('user_login_log', plugins_url('css/user_login_log.css', __FILE__), array(), $this->plugin_version);

		$realtime_check = apply_filters('crazy_bone::realtime_check', true);
		if ($realtime_check) {
			add_action('admin_footer', array($this, 'footer_js'));
			add_action('wp_footer',    array($this, 'footer_js'));
		}
	}

	public function customize_admin_bar_menu($wp_admin_bar){
		$capability = apply_filters('crazy_bone::admin_menu_capability', self::ADMIN_MENU_CAPABILITY);
		if (!current_user_can($capability))
			return;

		$title = $this->login_info();
		if ($title === false)
			return;

		$wp_admin_bar->add_menu(array(
			'id'     => 'user-login-log',
			'parent' => 'my-account',
			'title'  => $title,
			'meta'   => array(),
			'href'   => $this->admin_action,
		));
	}

	private function last_login_info() {
		$user = wp_get_current_user();
		if (is_wp_error($user))
			return false;

		$login_log = get_user_meta($user->ID, self::USER_META_KEY . '-login', true);
		if (!$login_log)
			$login_log = $this->logging($user->ID, 'login');

		$date = isset($login_log['Date']) ? strtotime($login_log['Date']) : time();
		$ip   = isset($login_log['IP']) ? $login_log['IP'] : '';
		$ua   = isset($login_log['User Agent']) ? $login_log['User Agent'] : '';

		return array('date' => $date, 'ip' => $ip, 'ua' => $ua);
	}

	private function login_info($args = '') {
		$user = wp_get_current_user();
		if (is_wp_error($user))
			return false;
		if (empty($args))
			$args = $this->last_login_info();
		$date = isset($args['date']) ? $args['date'] : $this->time();
		$ip = isset($args['ip']) ? $args['ip'] : $this->ip();
		$ua = isset($args['ua']) ? $args['ua'] : $this->ua();

		list($browser_name, $browser_code, $browser_ver, $os_name, $os_code, $os_ver, $pda_name, $pda_code, $pda_ver) = $this->detect_browser($ua);
		list($country_name, $country_code) = $this->detect_country($ip);

		$title = trim(sprintf(
			__('Last login: %s%s%s', self::TEXT_DOMAIN),
			$this->nice_time($date),
			!empty($ip) ? '&nbsp;'.$this->get_country_flag($ip) : '',
			!empty($ua) ? '&nbsp;'.$this->get_browser_icon($ua) : ''
			));
		return $title;
	}

	public function user_login_log($user_login, $user) {
		$this->logging($user->ID, 'login');
	}

	public function cookie_expired_log($cookie_elements) {
        if ( function_exists('get_userdatabylogin') ) {
		    $user = get_userdatabylogin($cookie_elements['username']);
		    $this->logging($user->ID, 'cookie_expired');
        }
	}

	public function cookie_bad_hash_log($cookie_elements) {
        if ( function_exists('get_userdatabylogin') ) {
		    $user = get_userdatabylogin($cookie_elements['username']);
		    $this->logging($user->ID, 'cookie_bad_hash');
        }
	}

	function wp_authenticate_log($user_login, $user_password) {
		if (empty($user_login))
			return;
		$user = wp_authenticate($user_login, $user_password);
		if (!is_wp_error($user))
			return;
		$errors = $user->errors;
		$args = array('errors' => $errors);
		if (array_key_exists('invalid_username', $errors)) {
			$user_id = 0;
			$args['user_login']    = $user_login;
			$args['user_password'] = $user_password;
		} else {
			$user = get_user_by('login', $user_login);
			$user_id = isset($user->ID) ? $user->ID : 0;
		}
		$this->logging($user_id, 'login_error', $args);
	}

	public function user_logout_log() {
		$user = wp_get_current_user();
		if (is_wp_error($user))
			return;
		$this->logging($user->ID, 'logout');
	}

	private function logging($user_id, $status, $args = array()) {
		global $wpdb;

		$activity_date  = $this->time();
		$activity_agent = $this->ua();
		$activity_IP    = $this->ip();
		list($country_name, $country_code) = self::detect_country($activity_IP);
		if ($user_id != 0) {
			$meta_value = array_merge(array(
				'status' => $status,
				'Date' => $activity_date,
				'User Agent' => $activity_agent,
				'IP' => $activity_IP,
				'Country Name' => $country_name,
				'Country Code' => $country_code,
				), (array)$args);
			update_user_meta($user_id, self::USER_META_KEY . "-{$status}", $meta_value);
		}

		if ($status === 'login_error') {
			$sql = $wpdb->prepare(
				"insert into {$this->ull_table}
				 (`user_id`, `activity_status`, `activity_date`, `activity_agent`, `activity_IP`, `activity_errors`, `country_name`, `country_code`)
				 values (%d, %s, %s, %s, %s, %s, %s, %s)",
				$user_id,
				$status,
				$activity_date,
				$activity_agent,
				$activity_IP,
				serialize($args),
				$country_name,
				$country_code
				);
		} else {
			$sql = $wpdb->prepare(
				"insert into {$this->ull_table}
				 (`user_id`, `activity_status`, `activity_date`, `activity_agent`, `activity_IP`, `country_name`, `country_code`)
				 values (%d, %s, %s, %s, %s, %s, %s)",
				$user_id,
				$status,
				$activity_date,
				$activity_agent,
				$activity_IP,
				$country_name,
				$country_code
				);
		}
		$wpdb->query($sql);

		return $meta_value;
	}

	public function ajax_info(){
		if (!is_user_logged_in())
			return;

		$args = $this->last_login_info();
		$content = $this->login_info($args);
		if ($content === false)
			wp_die('Not logged in.');

		$transient_key = 'ull-dismiss-'.md5($this->ip().(isset($args['ip']) ? $args['ip'] : ''));
		$dismiss = get_transient($transient_key);

	    header('Content-Type: application/json; charset='.get_option('blog_charset'));
	    echo json_encode(array(
			'content'       => $content,
			'login_IP'      => isset($args['ip']) ? $args['ip'] : '',
			'login_country' => isset($args['ip']) ? $this->get_country_flag($args['ip']) : '',
			'login_time'    => isset($args['date']) ? $this->nice_time($args['date']) : '',
			'IP'            => $this->ip(),
			'country'       => $this->get_country_flag($this->ip()),
			'dismiss'       => $dismiss,
			));
	    die();
	}

	public function ajax_dismiss(){
		if (!is_user_logged_in())
			return;

		$args = $this->last_login_info();
		$transient_key = 'ull-dismiss-'.md5($this->ip().(isset($args['ip']) ? $args['ip'] : ''));
		set_transient($transient_key, TRUE, 60 * 60);
		die();
	}

	public function footer_js(){
		if (!is_user_logged_in())
			return;

		$args = $this->last_login_info();
		$transient_key = 'ull-dismiss-'.md5($this->ip().(isset($args['ip']) ? $args['ip'] : ''));
		$dismiss = get_transient($transient_key);
		$caution = sprintf(
			"<h3>%s</h3><p>%s (' + res.login_time + ')</p>".
			"<p>".
			"%s' + res.login_country + '<strong>' + res.login_IP + '</strong><br/>".
			"%s' + res.country + '<strong>' + res.IP + '</strong>".
			"</p>",
			__('Caution!', self::TEXT_DOMAIN),
			__('Someone has logged in from another IP.', self::TEXT_DOMAIN),
			__("The someone\\'s IP address :", self::TEXT_DOMAIN),
			__('Your current IP address :', self::TEXT_DOMAIN)
			);
?>
<script type="text/javascript">
function get_ull_info() {
	jQuery.ajax('<?php echo admin_url('admin-ajax.php'); ?>',{
		data: {action: 'ull_info'},
		cache: false,
		dataType: 'json',
		type: 'POST',
		success: function(res){
<?php if (self::DEBUG_MODE) echo "\t\t\tconsole.log(res);\n" ?>
			if (!res.dismiss && res.IP !== res.login_IP) {
				jQuery('#wp-admin-bar-my-account').pointer({
					content: '<?php echo $caution; ?>',
					close: function(){
						jQuery.post('<?php echo admin_url('admin-ajax.php'); ?>', {
							action: 'dismiss-ull-wp-pointer',
						});
						setTimeout('get_ull_info()', 30000);
					}
				}).pointer('open');
			} else {
				setTimeout('get_ull_info()', 30000);
			}
			jQuery('#wp-admin-bar-user-login-log a').html(res.content);
		},
		error: function(){
			setTimeout('get_ull_info()', 10000);
		}
	});
}
jQuery(function(){setTimeout('get_ull_info()', 10000);});
</script>
<?php
	}

	// Add Admin Menu
	public function add_admin_menu() {
		$capability = apply_filters('crazy_bone::admin_menu_capability', self::ADMIN_MENU_CAPABILITY);

		$parent = 'profile.php';
		$page_title = __('Login Log', self::TEXT_DOMAIN);
		$menu_title = $page_title;
		$file = plugin_basename(__FILE__);
		$this->add_submenu_page(
			$parent,
			$page_title,
			array($this,'option_page'),
			$capability,
			$menu_title,
			$file
			);
	}
	private function add_submenu_page($parent, $page_title, $function, $capability = 'administrator', $menu_title = '', $file = '') {
		if ($menu_title == '')
			$menu_title = $page_title;
		if ($file == '')
			$file = $this->plugin_file;
		add_submenu_page($parent, $page_title, $menu_title, $capability, $file, $function);
	}

	private function ip(){
		$ip = isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : '127.0.0.1';
		if ( isset($_SERVER['HTTP_X_FORWARDED_FOR']) ) {
			$x_forwarded_for = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
			$ip = trim($x_forwarded_for[0]);
		}
		return preg_replace('/[^0-9a-fA-F:., ]/', '', $ip);
	}

	// Detect Country
	public static function detect_country($ip) {
		static $detect_countries;
		if ( !isset($detect_countries) )
			$detect_countries = new DetectCountriesController();
		list($country_name, $country_code) = $detect_countries->get_info($ip);
		if ( empty($country_code) )
			$country_code = __('UNKNOWN', self::TEXT_DOMAIN);
		return array($country_name, $country_code);
	}

	private function ua(){
		$ua = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : __('Unknown', self::TEXT_DOMAIN);
		return substr($ua, 0, 254);
	}

	// Detect Browser
	public static function detect_browser($ua) {
		static $detect_browsers;
		if ( !isset($detect_browsers) )
			$detect_browsers = new DetectBrowsersController();
		list($browser_name, $browser_code, $browser_ver, $os_name, $os_code, $os_ver, $pda_name, $pda_code, $pda_ver) = $detect_browsers->get_info($ua);
		if (empty($os_code)) {
			$os_name = !empty($pda_code) ? $pda_name : $browser_name;
			$os_code = !empty($pda_code) ? $pda_code : $browser_code;
			$os_ver  = !empty($pda_code) ? $pda_ver  : $browser_ver ;
		}
		if (empty($browser_code)) {
			$browser_name = $os_name;
			$browser_code = $os_code;
			$browser_ver  = $os_ver ;
		}

		if (empty($browser_name))
			$browser_name = $ua;
		if (empty($browser_code))
			$browser_code = 'unknown';

		if (empty($os_name))
			$os_name = $ua;
		if (empty($os_code))
			$os_code = 'unknown';

		return array($browser_name, $browser_code, $browser_ver, $os_name, $os_code, $os_ver, $pda_name, $pda_code, $pda_ver);
	}

	public static function time(){
		$time = current_time('mysql');
		return $time;
	}

	private function nice_time($date) {
		$nicetime = human_time_diff($date, current_time('timestamp'));
		return empty($nicetime) ? __('Just now!', self::TEXT_DOMAIN) : $nicetime;
	}

	public static function icon_img_tag($src, $alt, $title, $style = 'width:16px;height:16px;', $class = '') {
		return sprintf(
			__('<img src="%1$s" alt="%2$s" title="%3$s" style="%4$s" %5$s/>', self::TEXT_DOMAIN),
			$src,
			esc_attr($alt),
			esc_attr($title),
			$style,
			!empty($class) ? 'class="'.$class.'" ' : '');
	}

	// Get country flag
	public static function get_country_flag($ip, $class = '', $show_country_name = false) {
		list($country_name, $country_code) = self::detect_country($ip);

		$icon_dir = plugins_url('images/flags/', __FILE__);
		$style    = 'width:16px;height:11px;';

		return self::icon_img_tag($icon_dir.strtolower($country_code).'.png', "{$country_name} ({$ip})", "{$country_name} ({$ip})", $style, $class).
			($show_country_name ? "&nbsp;{$country_name}" : '');
	}

	// Get browser icon
	public static function get_browser_icon($ua, $show_ver = true, $separator = '&nbsp;', $class = '') {
		list($browser_name, $browser_code, $browser_ver, $os_name, $os_code, $os_ver, $pda_name, $pda_code, $pda_ver) = self::detect_browser($ua);

		$os_info      = trim($os_name . ( $show_ver ? ' ' . $os_ver : '' ));
		$pda_info     = trim($pda_name . ( $show_ver ? ' ' . $pda_ver : '' ));
		$browser_info = trim($browser_name . ( $show_ver ? ' ' . $browser_ver : '' ));
		$unknown_info = $show_ver ? $ua : __('UNKNOWN', self::TEXT_DOMAIN);

		$icon_dir     = plugins_url('images/browsers/', __FILE__);
		$style        = 'width:16px;height:16px;';

		$browser_icon = '';
		if ( !empty($os_info) )
			$browser_icon .= self::icon_img_tag($icon_dir.$os_code.'.png', $os_info, $os_info, $style, $class) . $separator;
		if ( !empty($pda_info) && $pda_code !== $os_code )
			$browser_icon .= self::icon_img_tag($icon_dir.$pda_code.'.png', $pda_info, $pda_info, $style, $class) . $separator;
		if ( !empty($browser_info) && $browser_code !== $os_code )
			$browser_icon .= self::icon_img_tag($icon_dir.$browser_code.'.png', $browser_info, $browser_info, $style, $class);
		if ( empty($browser_icon) )
			$browser_icon .= self::icon_img_tag($icon_dir.'unknown.png', $unknown_info, $unknown_info, $style, $class);

		return $browser_icon;
	}

	public function option_page() {
		if (isset($_GET['summary']))
			$this->summary_page();
		else
			$this->login_log_page();
	}

	private function filter_option($selected_user_id, $selected_status) {
		global $wpdb;

		$selectd = ' selected="selected"';

		echo '<select name="user_id">'."\n";
		printf('<option value="%d"%s>%s</option>'."\n", -1, $selected_user_id == -1 ? $selectd : '', __('All Users', self::TEXT_DOMAIN));
		printf('<option value="%d"%s>%s</option>'."\n", 0, $selected_user_id == 0 ? $selectd : '', __('Unknown', self::TEXT_DOMAIN));
		$users = $wpdb->get_results("select ID, user_login from `{$wpdb->users}` order by user_login");
		foreach((array)$users as $user) {
			printf('<option value="%d"%s>%s</option>'."\n", $user->ID, $selected_user_id == $user->ID ? $selectd : '', $user->user_login);
		}
		echo "</select>\n";

		echo '<select name="status">'."\n";
		foreach (array('', 'login', 'logout', 'login_error') as $status) {
			printf('<option value="%1$s"%2$s>%1$s</option>'."\n", $status, $selected_status == $status ? ' selected="selected"' : '');
		}
		echo "</select>\n";
	}

	// Pagination
	private function get_pagenation($total, $per_page, $page, $start = ''){
		if (empty($start))
			$start = (intval($page) - 1) * intval($per_page);

		$page_links = paginate_links( array(
			'base'      => add_query_arg( 'paged', '%#%' ) ,
			'format'    => '' ,
			'prev_text' => __('&laquo;') ,
			'next_text' => __('&raquo;') ,
			'total'     => ceil(intval($total) / intval($per_page)) ,
			'current'   => intval($page)
		));

		$page_links_text = sprintf( '<span class="displaying-num">' . __( 'Displaying %s&#8211;%s of %s' ) . '</span>%s',
			number_format_i18n( intval($total) > 0 ? intval($start) + 1 : 0 ),
			number_format_i18n( min(intval($page) * intval($per_page), intval($total)) ),
			number_format_i18n( intval($total) ),
			$page_links
		);

		return $page_links_text;
	}

	private function get_user_id(){
		$user_id = 0;
		if (current_user_can('create_users') && isset($_GET['user_id'])) {
			$user_id = intval($_GET['user_id']);
		} else {
			$user = wp_get_current_user();
			if (is_wp_error($user))
				return;
			$user_id = intval($user->ID);
		}
		return $user_id;
	}

	private function get_status(){
		$status = '';
		if (!current_user_can('create_users'))
			return $status;

		if (isset($_GET['status'])) {
			switch (strtolower($_GET['status'])){
			case 'login':
			case 'logout':
			case 'login_error':
				$status = strtolower($_GET['status']);
				break;
			default:
				$status = '';
			}
		}
		return $status;
	}

	private function login_log_page() {
		global $wpdb;

		$err_message   = '';
		$user_id = $this->get_user_id();
		$status  = $this->get_status();

		// Truncate Log
		$nonce_action  = 'truncate_logs';
		$nonce_name    = '_wpnonce_truncate_logs';
		$truncate_date = '';
		if (current_user_can('manage_options') && isset($_POST['truncate_date']) && check_admin_referer($nonce_action, $nonce_name)) {
			if (is_numeric($_POST['truncate_date'])) {
				$user_id = intval($_POST['user_id']);
				$truncate_date = intval($_POST['truncate_date']);
				$sql = $wpdb->prepare(
					"DELETE FROM {$this->ull_table} WHERE `activity_date` <= DATE_SUB(NOW(), INTERVAL %d day)",
					$truncate_date
					);
				if ($user_id >= 0)
					$sql .= $wpdb->prepare(" AND `user_id` = %d", $user_id);
				if (!empty($status))
					$sql .= $wpdb->prepare(" AND `activity_status` = %s", $status);
				$wpdb->query($sql);

				$err_message = sprintf(
					'<div id="message" class="updated fade"><p><strong>%s</strong></p></div>'."\n",
					empty($err_message) ? __('Done!', self::TEXT_DOMAIN) : $err_message
					);
			}
		}

		// get total count
		$sql = "
			FROM `{$this->ull_table}`
			LEFT JOIN `{$wpdb->users}` ON `{$this->ull_table}`.`user_id` = `{$wpdb->users}`.`ID`
			WHERE 1 = 1";
		if ($user_id >= 0)
			$sql .= $wpdb->prepare(" AND `user_id` = %d", $user_id);
		if (!empty($status))
			$sql .= $wpdb->prepare(" AND `activity_status` = %s", $status);
		$total = intval($wpdb->get_var("SELECT count(`{$this->ull_table}`.`ID`) {$sql}"));

		// Pagination
		$page = abs(intval(isset($_GET['paged']) ? $_GET['paged'] : 1));
		$start = ($page - 1) * self::LIST_PER_PAGE;
		$page_links_text = $this->get_pagenation($total, self::LIST_PER_PAGE, $page, $start);

		// get login log
		$sql = $wpdb->prepare(
			'SELECT `user_id`, `user_login`, `activity_date`, `activity_status`, `activity_IP`, `activity_agent`, `activity_errors`'.
			$sql.' ORDER BY `activity_date` DESC'.
			' LIMIT %d, %d',
			$start,
			self::LIST_PER_PAGE
			);
		$ull = $wpdb->get_results($sql);

		$row_num = 0;
?>
<div class="wrap">
<div id="icon-profile" class="icon32"></div>
<h2><?php _e('Login Log', self::TEXT_DOMAIN); ?></h2>
<?php echo $err_message."\n"; ?>

<div class="tablenav">

<?php if (current_user_can('create_users')) { ?>
<div class="alignleft actions">
<form action="" method="get">
<input type="hidden" name="page" value="<?php echo plugin_basename(__FILE__); ?>" />
<?php $this->filter_option($user_id, $status); ?>
<?php submit_button(__('Apply Filters'), 'action', false, false, array('id' => "doaction"));?>
</form>
</div>
<?php } ?>

<?php if (current_user_can('manage_options')) { ?>
<div class="alignleft actions">
<form action="" method="post">
<?php echo wp_nonce_field($nonce_action, $nonce_name, true, false) . "\n"; ?>
<input type="hidden" name="user_id" value="<?php echo $user_id; ?>" />
<label for="truncate_date"><?php _e('Truncate Log', self::TEXT_DOMAIN);?></label>
<input type="text" name="truncate_date" value="<?php echo $truncate_date;?>" size="2" style="text-align:right;" />
<?php _e('days and older.', self::TEXT_DOMAIN);?>&nbsp;
<?php submit_button(__('Truncate', self::TEXT_DOMAIN), 'action', false, false, array('id' => "truncate"));?>
</form>
</div>
<?php } ?>

<div class="alignright tablenav-pages">
<?php echo $page_links_text; ?>
</div>

<?php if (current_user_can('manage_options')) { ?>
<div class="alignright tablenav-pages" style="margin-right:1em;">
<form action="" method="GET">
<input type="hidden" name="page" value="<?php echo plugin_basename(__FILE__); ?>" />
<input type="hidden" name="summary" value="summary" />
<input type="hidden" name="user_id" value="<?php echo $user_id; ?>" />
<?php if (!empty($status)) { ?>
<input type="hidden" name="status" value="<?php echo $status; ?>" />
<?php } ?>
<?php submit_button(__('Summary', self::TEXT_DOMAIN), 'action', false, false, array('id' => "summary"));?>
</form>
</div>
<?php } ?>

<br class="clear" />
</div>

<div class="clear"></div>

<table class="widefat comments fixed" cellspacing="0">
<thead>
	<tr>
<?php if ($user_id <= 0) { ?>
	<th scope="col" class="manage-column column-username"><?php _e('User Name', self::TEXT_DOMAIN); ?></th>
<?php } ?>
	<th scope="col" class="manage-column column-date"><?php _e('Date', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-status"><?php _e('Status', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-ip"><?php _e('IP', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-agent"><?php _e('User Agent', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-errors"><?php _e('Errors', self::TEXT_DOMAIN); ?></th>
<?php if ($user_id == 0) { ?>
	<th scope="col" class="manage-column column-errors"><?php _e('Invalid User Name / Password', self::TEXT_DOMAIN); ?></th>
<?php } ?>
	</tr>
</thead>
<tfoot>
	<tr>
<?php if ($user_id <= 0) { ?>
	<th scope="col" class="manage-column column-username"><?php _e('User Name', self::TEXT_DOMAIN); ?></th>
<?php } ?>
	<th scope="col" class="manage-column column-date"><?php _e('Date', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-status"><?php _e('Status', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-ip"><?php _e('IP', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-agent"><?php _e('User Agent', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-errors"><?php _e('Errors', self::TEXT_DOMAIN); ?></th>
<?php if ($user_id == 0) { ?>
	<th scope="col" class="manage-column column-errors"><?php _e('Invalid User Name / Password', self::TEXT_DOMAIN); ?></th>
<?php } ?>
	</tr>
</tfoot>

<tbody id="user-login-log">
<?php foreach($ull as $row) {?>
<?php
list($browser_name, $browser_code, $browser_ver, $os_name, $os_code, $os_ver, $pda_name, $pda_code, $pda_ver) = self::detect_browser($row->activity_agent);
$ua  = trim("$os_name $os_ver");
$ua .= $browser_code !== $os_code ? (empty($ua) ? '' : ' / ')."$browser_name $browser_ver" : '';
$ua  = trim($ua);

$errors = unserialize($row->activity_errors);
$user_login =
	(is_array($errors) && isset($errors['user_login']))
	? $errors['user_login']
	: $row->user_login;
$password =
	(is_array($errors) && isset($errors['user_login']) && isset($errors['user_password']))
	? "{$errors['user_login']} / {$errors['user_password']}"
	: '';
$errors =
	(is_array($errors) && isset($errors['errors']))
	? implode(', ', array_keys($errors['errors']))
	: '';
if ($errors != 'invalid_username')
	$password = '';
?>
<tr id="log-<?php echo $row_num ?>">
<?php if ($user_id <= 0) { ?>
<td class="username column-username"><?php echo $user_login; ?></td>
<?php } ?>
<td class="date column-date"><?php echo esc_html($row->activity_date); ?></td>
<td class="status column-status"><?php echo esc_html($row->activity_status); ?></td>
<td class="ip column-ip"><?php echo trim(self::get_country_flag($row->activity_IP, '', true) . '<br>' . esc_html($row->activity_IP)); ?></td>
<td class="agent column-agent"><?php echo trim(self::get_browser_icon($row->activity_agent) . '<br>' . esc_html($ua)); ?></td>
<td class="errors column-errors"><?php echo esc_html($errors); ?></td>
<?php if ($user_id == 0) { ?>
<td class="password column-errors"><?php echo esc_html($password); ?></td>
<?php } ?>
</tr>
<?php $row_num++; }?>
</tbody>
</table>

<div class="tablenav">
<div class="alignright tablenav-pages">
<?php echo $page_links_text; ?>
</div>
<br class="clear" />
</div>

</div>
<?php
	}

	private function summary_page(){
		global $wpdb;

		$err_message = '';
		$user_id = $this->get_user_id();
		$status  = $this->get_status();

		// get total count
		$sql =
			"SELECT distinct `user_id`, `user_login`, `activity_status`, `activity_errors`, count(*) as `count`
			FROM `{$this->ull_table}`
			LEFT JOIN `{$wpdb->users}` ON `{$this->ull_table}`.`user_id` = `{$wpdb->users}`.`ID`
			WHERE 1 = 1";
		if ($user_id >= 0)
			$sql .= $wpdb->prepare(" AND `user_id` = %d", $user_id);
		if (!empty($status))
			$sql .= $wpdb->prepare(" AND `activity_status` = %s", $status);
		$sql .= " GROUP BY `user_id`, `user_login`, `activity_status`, `activity_errors`";
		$sql .= " ORDER BY `count` DESC, `user_login`, `user_id`";
		$total = intval($wpdb->get_var("SELECT count(*) from ({$sql}) as log"));

		// Pagination
		$page = abs(intval(isset($_GET['paged']) ? $_GET['paged'] : 1));
		$start = ($page - 1) * self::LIST_PER_PAGE;
		$page_links_text = $this->get_pagenation($total, self::LIST_PER_PAGE, $page, $start);

		// get login log summary
		$ull_summary = $wpdb->get_results($wpdb->prepare("{$sql} LIMIT %d,%d", $start, self::LIST_PER_PAGE));

		$row_num = 0;
?>
<div class="wrap">
<div id="icon-profile" class="icon32"></div>
<h2><?php _e('Summary Login Log', self::TEXT_DOMAIN); ?></h2>
<?php echo $err_message."\n"; ?>

<div class="tablenav">
<?php if (current_user_can('create_users')) { ?>
<div class="alignleft actions">
<form action="" method="get">
<input type="hidden" name="page" value="<?php echo plugin_basename(__FILE__); ?>" />
<input type="hidden" name="summary" value="summary" />
<?php $this->filter_option($user_id, $status); ?>
<?php submit_button(__('Apply Filters'), 'action', false, false, array('id' => "doaction"));?>
</form>
</div>
<?php } ?>

<div class="alignright tablenav-pages">
<?php echo $page_links_text; ?>
</div>

<?php if (current_user_can('manage_options')) { ?>
<div class="alignright tablenav-pages" style="margin-right:1em;">
<form action="" method="GET">
<input type="hidden" name="page" value="<?php echo plugin_basename(__FILE__); ?>" />
<input type="hidden" name="user_id" value="<?php echo $user_id; ?>" />
<?php if (!empty($status)) { ?>
<input type="hidden" name="status" value="<?php echo $status; ?>" />
<?php } ?>
<?php submit_button(__('Login Log', self::TEXT_DOMAIN), 'action', false, false, array('id' => "login_log"));?>
</form>
<?php } ?>
<br class="clear" />
</div>

<div class="clear"></div>

<table class="widefat comments fixed" cellspacing="0">
<thead>
	<tr>
	<th scope="col" class="manage-column column-username"><?php _e('User Name', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-status"><?php _e('Status', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-errors"><?php _e('Errors', self::TEXT_DOMAIN); ?></th>
<?php if ($user_id == 0) { ?>
	<th scope="col" class="manage-column column-errors"><?php _e('Invalid User Name / Password', self::TEXT_DOMAIN); ?></th>
<?php } ?>
	<th scope="col" class="manage-column column-errors" style="text-align:right;"><?php _e('Count', self::TEXT_DOMAIN); ?></th>
	</tr>
</thead>
<tfoot>
	<tr>
	<th scope="col" class="manage-column column-username"><?php _e('User Name', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-status"><?php _e('Status', self::TEXT_DOMAIN); ?></th>
	<th scope="col" class="manage-column column-errors"><?php _e('Errors', self::TEXT_DOMAIN); ?></th>
<?php if ($user_id == 0) { ?>
	<th scope="col" class="manage-column column-errors"><?php _e('Invalid User Name / Password', self::TEXT_DOMAIN); ?></th>
<?php } ?>
	<th scope="col" class="manage-column column-errors" style="text-align:right;"><?php _e('Count', self::TEXT_DOMAIN); ?></th>
	</tr>
</tfoot>

<tbody id="user-login-log">
<?php foreach($ull_summary as $row) {?>
<?php
$errors = unserialize($row->activity_errors);
$user_login =
	(is_array($errors) && isset($errors['user_login']))
	? $errors['user_login']
	: $row->user_login;
$password =
	(is_array($errors) && isset($errors['user_login']) && isset($errors['user_password']))
	? "{$errors['user_login']} / {$errors['user_password']}"
	: '';
$errors =
	(is_array($errors) && isset($errors['errors']))
	? implode(', ', array_keys($errors['errors']))
	: '';
if ($errors != 'invalid_username')
	$password = '';
?>
<tr id="log-<?php echo $row_num ?>">
<td class="username column-username"><?php echo esc_html($user_login); ?></td>
<td class="status column-status"><?php echo esc_html($row->activity_status); ?></td>
<td class="errors column-errors"><?php echo esc_html($errors); ?></td>
<?php if ($user_id == 0) { ?>
<td class="password column-errors"><?php echo esc_html($password); ?></td>
<?php } ?>
<td class="count column-errors" style="text-align:right;"><?php echo esc_html($row->count); ?></td>
</tr>
<?php $row_num++; }?>
</tbody>
</table>

<div class="tablenav">
<div class="alignright tablenav-pages">
<?php echo $page_links_text; ?>
</div>
<br class="clear" />
</div>

</div>
<?php
	}
}