*/
class _404_To_301_Public {
/**
* The ID of this plugin.
*
* @since 2.0.0
* @access private
* @var string $plugin_name The ID of this plugin.
*/
private $plugin_name;
/**
* The version of this plugin.
*
* @since 2.0.0
* @access private
* @var string $version The current version of this plugin.
*/
private $version;
/**
* The database table of plugin.
*
* @since 2.0.0
* @access protected
* @var string $table The name of the database table from db.
*/
private $table;
/**
* Initialize the class and set its properties.
*
* @since 2.0.0
* @var string $plugin_name The name of the plugin.
* @var string $version The version of this plugin.
*/
public function __construct( $plugin_name, $version, $table ) {
$this->plugin_name = $plugin_name;
$this->version = $version;
$this->table = $table;
$this->gnrl_options = get_option( 'i4t3_gnrl_options' );
}
/**
* Create the 404 Log Email to be sent.
*
* @since 2.0.0
* @uses get_option To get admin email from database.
* @uses get_bloginfo To get site title.
*/
public function i4t3_send_404_log_email( $log_data ) {
// Filter to change the email address used for admin notifications
$admin_email = apply_filters( 'i4t3_notify_admin_email_address', get_option( 'admin_email' ) );
// Action hook that will be performed before sending 404 error mail
do_action( 'i4t3_before_404_email_log', $log_data );
// Get the site name
$site_name = get_bloginfo( 'name' );
$headers[] = 'From: ' . $site_name . ' <' . $admin_email . '>' . "\r\n";
$headers[] = 'Content-Type: text/html; charset=UTF-8';
$message = ''. __( 'Bummer! You have one more 404', '404-to-301' ) .'
';
$message .= '';
$message .= '';
$message .= '| '. __( 'IP Address', '404-to-301' ) .' | ';
$message .= '' . $log_data['ip'] . ' | ';
$message .= '
';
$message .= '';
$message .= '| '. __( '404 Path', '404-to-301' ) .' | ';
$message .= '' . $log_data['url'] . ' | ';
$message .= '
';
$message .= '';
$message .= '| '. __( 'User Agent', '404-to-301' ) .' | ';
$message .= '' . $log_data['ua'] . ' | ';
$message .= '
';
$message .= '
';
$is_sent = wp_mail(
$admin_email,
__( 'Snap! One more 404 on ', '404-to-301' ) . $site_name,
$message,
$headers
);
}
/**
* The main function to perform redirections and logs on 404s.
* Creating log for 404 errors, sending admin notification email if enables,
* redirecting visitors to the specific page etc. are done in this function.
*
* @since 2.0.0
* @uses wp_redirect To redirect to a given link.
* @uses do_action To add new action.
*/
public function i4t3_redirect_404() {
// Check if 404 page and not admin side
if ( is_404() && !is_admin() ) {
// Get the settings options
$logging_status = ( $this->gnrl_options['redirect_log'] ) ? $this->gnrl_options['redirect_log'] : 1;
$redirect_type = ( $this->gnrl_options['redirect_type'] ) ? $this->gnrl_options['redirect_type'] : '301';
// Get the email notification settings
$is_email_send = ( !empty( $this->gnrl_options['email_notify'] ) ) ? true : false;
// Get error details if emailnotification or log is enabled
if( $logging_status == 1 || $is_email_send ) {
// Action hook that will be performed before logging 404 errors
do_action( 'i4t3_before_404_logging' );
global $wpdb;
$data = array(
'date' => current_time('mysql'),
'url' => $_SERVER['REQUEST_URI']
);
if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
$data['ip'] = $_SERVER['HTTP_CLIENT_IP'];
} else if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$data['ip'] = $_SERVER['HTTP_X_FORWARDED_FOR'];
} else {
$data['ip'] = $_SERVER['REMOTE_ADDR'];
}
$data['ref'] = $_SERVER['HTTP_REFERER'];
$data['ua'] = $_SERVER['HTTP_USER_AGENT'];
// trim stuff
foreach( array( 'url', 'ref', 'ua' ) as $k )
if( isset( $data[$k] ) )
$data[$k] = substr( $data[$k], 0, 512 );
}
// Add log data to db if log is enabled by user
if($logging_status == 1) {
$wpdb->insert( $this->table, $data );
// pop old entry if we exceeded the limit
//$max = intval( $this->options['max_entries'] );
$max = 500;
$cutoff = $wpdb->get_var( "SELECT id FROM $this->table ORDER BY id DESC LIMIT $max,1" );
if( $cutoff ) {
$wpdb->delete( $this->table, array( 'id' => intval( $cutoff ) ), array( '%d' ) );
}
}
// Send email notification if enabled
if ($is_email_send) {
$this->i4t3_send_404_log_email($data);
}
// Get redirect settings
$redirect_to = $this->gnrl_options['redirect_to'];
switch( $redirect_to ) {
// Do not redirect if none is set
case 'none':
break;
// Redirect to an existing WordPress site inside our site
case 'page':
$url = get_permalink( $this->gnrl_options['redirect_page'] );
break;
// Redirect to a custom link given by user
case 'link':
$naked_url = $this->gnrl_options['redirect_link'];
$url = (!preg_match("~^(?:f|ht)tps?://~i", $naked_url)) ? "http://" . $naked_url : $naked_url;
break;
// If nothing, be chill and do nothing!
default:
break;
}
// Perform the redirect if $url is set
if (!empty($url)) {
// Action hook that will be performed before 404 redirect starts
//echo $url; exit();
do_action( 'i4t3_before_404_redirect' );
wp_redirect( $url, $redirect_type );
exit(); // exit, because WordPress will not exit automatically
}
// Action hook that will be performed after 404 redirect
do_action( 'i4t3_after_404_redirect' );
}
}
}