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remove-http.php
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remove-http.php
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<?php
/**
* Plugin Name: Remove HTTP
* Plugin URI: https://wordpress.org/plugins/remove-http/
* Description: Removes both HTTP and HTTPS protocols from links.
* Version: 2.2.0
* Author: Fact Maven
* Author URI: https://www.factmaven.com/
* License: GPLv3
*/
// If accessed directly, exit
if ( !defined( 'ABSPATH' ) ) exit;
class Fact_Maven_Remove_HTTP {
private $option, $plugin;
public function __construct() {
// Call the core Plugin API
require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
// Get plugin's metadata
$this->plugin = get_plugin_data( __FILE__ );
// If the plugin version is lower or not defined, remove plugin options
if ( ( get_option( 'factmaven_rhttp_version' ) < $this->plugin['Version'] ) || !get_option( 'factmaven_rhttp_version' ) ) {
// Remove options with the prefix "factmaven_rhttp_"
foreach ( wp_load_alloptions() as $option => $value ) {
if ( strpos( $option, 'factmaven_rhttp' ) === 0 ) delete_option( $option );
}
// Add options for new plugin version
update_option( 'factmaven_rhttp_version', $this->plugin['Version'] );
}
// Get plugin options
$this->option = get_option( 'factmaven_rhttp' );
// Set default options
if ( empty( $this->option['format'] ) ) {
$this->option['format'] = 'protocol-relative';
}
if ( empty( $this->option['ignore'] ) ) {
$this->option['ignore'] = '';
}
if ( empty( $this->option['external'] ) ) {
$this->option['external'] = '0';
}
// Add link to plugin settings
add_filter( 'plugin_action_links', array( $this, 'settings_link' ), 10, 2 );
// Add custom settings field
add_filter( 'admin_init', array( $this, 'settings_field' ), 10, 1 );
// Relocate settings field using jQuery
add_action( 'admin_footer', array( $this, 'settings_location' ), 10, 1 );
// Protocol is only removed on frontend, ignore Admin Dashboard
if ( !is_admin() && ( defined( 'DOING_AJAX' ) || 'DOING_AJAX' ) ) {
add_action( 'wp_loaded', array( $this, 'protocol_relative' ) , PHP_INT_MAX, 1 );
}
}
public function settings_link( $links, $file ) {
// Display settings link
if ( $file == plugin_basename( __FILE__ ) && current_user_can( 'manage_options' ) ) {
array_unshift( $links, '<a href="options-general.php#home">Settings</a>' );
}
// Return the settings link
return $links;
}
public function settings_field() {
// Register the settings
register_setting( 'general', 'factmaven_rhttp' );
// Add settings field
add_settings_field( 'protocol_relative', 'URL Format', array( $this, 'options' ), 'general' );
}
public function settings_location() {
// Insert the settings field after the 'Site Address (URL)'
?> <script type="text/javascript">
jQuery( '#format-description' ).closest( 'tr' ).insertAfter( jQuery( '#home' ).closest( 'tr' ) );
</script> <?php
}
public function options() {
// Display plugin settings field
?> <fieldset>
<label><input type="radio" name="factmaven_rhttp[format]" value="protocol-relative" <?php checked( 'protocol-relative', $this->option['format'] ); ?> checked="checked"> <span class="date-time-text">Protocol-Relative</span><code><?php echo preg_replace( '/^https?:/', '', home_url() ); ?>/sample-post/</code></label><br>
<label><input type="radio" name="factmaven_rhttp[format]" value="relative" <?php checked( 'relative', $this->option['format'] ); ?>> <span class="date-time-text">Relative</span><code>/sample-post/</code></label>
<p class="description" id="format-description">Relative format will only affect internal links.</p>
<br>
<!-- <label>Exclude the following domains and URLs, internal or external. Enter each link on a new line.</label>
<p><textarea name="factmaven_rhttp[ignore]" rows="5" cols="80" class="code" placeholder="<?php echo preg_replace( '/^https?:\/\//', '', home_url() ); ?>
<?php echo home_url(); ?>/sample-post"><?php echo $this->option['ignore']; ?></textarea></p> -->
<label><input name="factmaven_rhttp[external]" type="checkbox" value="1" <?php checked( '1', $this->option['external'] ); ?>>Ignore all external links</label>
<!-- <p class="description" id="external-description">This will override any external URLs entered in the textbox above.</p> -->
</fieldset> <?php
}
public function protocol_relative() {
// Enable output buffering
ob_start( function( $links ) {
// Check for 'Content-Type' headers only
$content_type = NULL;
foreach ( headers_list() as $header ) {
if ( strpos( strtolower( $header ), 'content-type:' ) === 0 ) {
$pieces = explode( ':', strtolower( $header ) );
$content_type = trim( $pieces[1] );
break;
}
}
// If the content-type is 'NULL' or 'text/html', apply rewrite
if ( is_null( $content_type ) || substr( $content_type, 0, 9 ) === 'text/html' ) {
// Get domain without protocol
$website = preg_replace( '/^https?:\/\//', '', home_url() );
$website = preg_replace( '/\/.*$/', '', $website );
// Ignore input tags link tags with 'rel=canonical'
$exceptions = '<(?:input\b[^<]*\bvalue=[\"\']https?:\/\/|link\b[^<]*?\brel=[\'\"]canonical[\'\"][^<]*?>)(*SKIP)(*F)';
// If 'Ignore external links' is selected, only apply changes to internal links
if ( $this->option['external'] == 1 ) {
if ( $this->option['format'] == 'relative' ) $links = preg_replace( '/' . $exceptions . '|https?:\/\/' . $website . '/', '', $links );
else $links = preg_replace( '/' . $exceptions . '|https?:\/\/' . $website . '/', '//$1' . $website, $links );
}
// If 'Ignore external links' is not selected and ignore textbox is not empty, only apply to non-excluded domains
/*elseif ( $this->option['external'] != 1 && $this->$option['ignore'] == '' ) {
$ignore_list = preg_split( '/\r\n|[\r\n]/', $option['ignore'] );
foreach ( $ignore_list as $ignore_url ) {
$parse_url = parse_url( $ignore_url );
if ( $parse_url['path'] != '' ) {
$host = $parse_url['path'];
}
else {
$host = $parse_url['host'];
}
if ( strpos( $url, $host ) !== false) {
return $url;
}
}
}*/
// Else, apply to all internal and external links
else {
if ( $this->option['format'] == 'relative' ) $links = preg_replace( '/' . $exceptions . '|https?:\/\/' . $website . '/', '', $links );
else $links = preg_replace( '/' . $exceptions . '|https?:\/\//', '//', $links );
}
}
// Return protocol relative links
return $links;
} );
}
}
// Instantiate the class
new Fact_Maven_Remove_HTTP();