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<?php
defined( 'ABSPATH' ) || die( 'Cheatin\' uh?' );
class SQ_Models_Services_Redirects extends SQ_Models_Abstract_Seo {
public function __construct() {
parent::__construct();
//Do not load for admin backend
if ( is_admin() || is_network_admin() ) {
return;
}
//Check for changed permalink in the Posts and redirect the article to the new URL
$this->redirectPermalinks();
//Check if snippet redirect for this post type
$this->redirectSnippet();
//check if not found permalink
$this->redirectNotFound();
}
/**
* Check if is set redirect in snippet
*
* @return void
*/
private function redirectSnippet() {
if ( isset( $this->_post->sq->doseo ) && $this->_post->sq->doseo ) {
if ( isset( $this->_post->sq->redirect ) && isset( $this->_post->sq->redirect_type ) ) {
$this->_post->sq->redirect_type = (int) $this->_post->sq->redirect_type;
if ( $this->_post->sq->redirect <> '' && in_array( $this->_post->sq->redirect_type, array(
301,
302,
307
) ) ) {
switch ( $this->_post->sq->redirect_type ) {
case 301:
header( 'HTTP/1.1 301 Moved Permanently' );
break;
case 302:
header( 'HTTP/1.1 302 Moved Temporarily' );
break;
case 307:
header( 'HTTP/1.1 307 Moved Temporarily' );
break;
}
header( 'X-Redirect-By: Squirrly SEO' );
header( 'Location: ' . $this->_post->sq->redirect, true, $this->_post->sq->redirect_type );
exit();
}
}
}
}
/**
* Check for changed permalink in the Posts and redirect the article to the new URL
*/
private function redirectPermalinks() {
if ( is_404() && isset( $_SERVER['REQUEST_URI'] ) ) {
$query_string = false;
$url_request = strtolower( urldecode( $_SERVER['REQUEST_URI'] ) );
$patterns = (array) SQ_Classes_Helpers_Tools::getOption( 'patterns' );
if ( parse_url( $url_request, PHP_URL_PATH ) ) {
if ( strpos( $url_request, '?' ) ) {
$query_string = explode( '?', $url_request );
$query_string = ( isset( $query_string[1] ) ) ? $query_string[1] : false;
}
$url_request = basename( trim( parse_url( $url_request, PHP_URL_PATH ), '/' ) );
global $wpdb;
if ( $url_request <> '' ) {
if ( $row = $wpdb->get_row( $wpdb->prepare( "SELECT post_id FROM `$wpdb->postmeta` WHERE `meta_key` = %s AND `meta_value` = %s", '_sq_old_slug', $url_request ) ) ) {
if ( $post = get_post( $row->post_id ) ) {
if ( $post->post_status == 'publish' ) {
if ( isset( $patterns[ $post->post_type ]['do_redirects'] ) && $patterns[ $post->post_type ]['do_redirects'] ) {
if ( $permalink = get_permalink( $row->post_id ) ) {
$permalink = ( $query_string ) ? $permalink . "?" . $query_string : $permalink;
header( 'HTTP/1.1 301 Moved Permanently' );
header( 'X-Redirect-By: Squirrly SEO' );
header( 'Location: ' . $permalink, true, 301 );
exit();
}
}
}
}
} elseif ( $row = $wpdb->get_row( $wpdb->prepare( "SELECT id FROM `$wpdb->posts` WHERE `post_status` = %s AND `post_name` = %s", 'trash', $url_request . '__trashed' ) ) ) {
$this->_post = SQ_Classes_ObjController::getClass( 'SQ_Models_Snippet' )->setPostByID( $row->id );
}
}
}
}
}
/**
* Check for not found permalinks
*/
private function redirectNotFound() {
if ( is_404() && isset( $_SERVER['REQUEST_URI'] ) ) {
//If there is no post found but the redirects are set for 404
if ( isset( $this->_post->sq->do_redirects ) && $this->_post->sq->do_redirects && SQ_Classes_Helpers_Tools::getOption( '404_url_redirect' ) ) {
header( 'X-Redirect-By: Squirrly SEO' );
//check the default redirect URL and prevent loop redirects
if ( parse_url( SQ_Classes_Helpers_Tools::getOption( '404_url_redirect' ), PHP_URL_PATH ) <> $_SERVER['REQUEST_URI'] ) {
header( 'Location: ' . SQ_Classes_Helpers_Tools::getOption( '404_url_redirect' ), true, 301 );
} else {
header( 'Location: ' . home_url(), true, 301 );
}
exit();
}
}
}
}