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<?php |
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/** |
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* Plugin Name: WP Hydra |
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* Plugin URI: https://wordpress.org/plugins/wp-hydra/ |
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* Description: Allows one WordPress installation to be resolved and browsed at multiple domains. |
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* Version: 1.0.4 |
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* Author: tyxla |
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* Author URI: http://marinatanasov.com/ |
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* Plugin URI: https://github.com/tyxla/WP-Hydra |
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* License: GPL2 |
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* Requires at least: 3.0.1 |
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* Tested up to: 4.4.2 |
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*/ |
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/** |
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* Main WP_Hydra class. |
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* |
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* Replaces the original domain with the current domain, where necessary. |
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* All of the magic is hooked upon WP_Hydra object initialization. |
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*/ |
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class WP_Hydra { |
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/** |
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* Constructor. |
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* |
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* Hooks all of the domain replacement functionality. |
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* |
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* @access public |
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*/ |
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public function __construct() { |
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// modify domain where necessary |
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add_filter( 'option_blogname', array( $this, 'setup_domain' ), 1 ); |
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add_filter( 'option_siteurl', array( $this, 'setup_domain' ), 1 ); |
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add_filter( 'option_home', array( $this, 'setup_domain' ), 1 ); |
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add_filter( 'stylesheet_uri', array( $this, 'setup_domain' ), 1 ); |
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add_filter( 'stylesheet_directory_uri', array( $this, 'setup_domain' ), 1 ); |
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add_filter( 'template_directory_uri', array( $this, 'setup_domain' ), 1 ); |
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add_filter( 'plugins_url', array( $this, 'setup_domain' ), 1 ); |
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// replace various occurences |
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add_filter( 'the_content', array( $this, 'setup_content' ) ); // content |
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add_filter( 'widget_text', array( $this, 'setup_content' ) ); // widget text |
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add_filter( 'upload_dir', array( $this, 'setup_upload_dir' ) ); // wp_upload_dir(); |
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// allow developers to support multiple domains in fields that contain only a site URL |
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add_filter( 'wp_hydra_domain', array( $this, 'setup_domain' ) ); |
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// allow developers to support URLs with multiple domains in their content |
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add_filter( 'wp_hydra_content', array( $this, 'setup_content' ) ); |
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} |
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/** |
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* Replaces original domain with current domain in simple fields. |
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* |
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* @access public |
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* |
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* @param string $url The current URL. |
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* @return string $url The URL with the (maybe) replaced domain. |
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*/ |
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public function setup_domain( $url ) { |
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// parse current URL |
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$original_domain_parts = parse_url( $url ); |
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// if unable to retrieve the host, skip |
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if ( empty( $original_domain_parts['host'] ) ) { |
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return $url; |
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} |
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// get original and current domain |
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$original_domain = $original_domain_parts['host']; |
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$current_domain = $_SERVER['HTTP_HOST']; |
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// if original and current domain match, skip |
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if ( $original_domain == $current_domain ) { |
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return $url; |
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} |
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return $this->replace_domain( $url, $original_domain, $current_domain ); |
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} |
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/** |
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* Replace the old domain with a new domain in a specific URL. |
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* |
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* @access protected |
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* |
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* @param string $url The current URL. |
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* @param string $old_domain The old domain. |
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* @param string $new_domain The new domain. |
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* @return string $url The new URL. |
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*/ |
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protected function replace_domain( $url, $old_domain, $new_domain ) { |
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// prepare original domain and current domain with the current protocol |
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$protocols = array( 'http://', 'https://' ); |
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$current_protocol = ( is_ssl() ? 'https' : 'http' ) . '://'; |
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foreach ( $protocols as $protocol ) { |
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$original_base = $protocol . $old_domain; |
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$new_base = $current_protocol . $new_domain; |
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// replace original domain with current domain |
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$url = str_replace( $original_base, $new_base, $url ); |
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} |
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return $url; |
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} |
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/** |
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* Replaces original domain with current domain in content. |
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* |
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* @access public |
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* |
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* @param string $content The current content with the original domain. |
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* @return string $content The content with the new domain. |
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*/ |
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public function setup_content( $content ) { |
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// get original home URL |
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remove_filter( 'option_home', array( $this, 'setup_domain' ), 1 ); |
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$original_home = home_url( '/' ); |
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add_filter( 'option_home', array( $this, 'setup_domain' ), 1 ); |
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// get current home URL |
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$current_home = home_url( '/' ); |
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// replace occurences of original URL with current home URL |
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$content = str_replace( $original_home, $current_home, $content ); |
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return $content; |
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} |
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/** |
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* Replaces original domain with current domain in wp_upload_dir(). |
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* |
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* @access public |
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* |
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* @param array $upload_dir The current upload dir settings with the original domain. |
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* @return array $upload_dir The upload dir settings with the new domain. |
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*/ |
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public function setup_upload_dir( $upload_dir ) { |
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// keys of array element that we'll be updating |
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$keys_to_update = array( |
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'url', |
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'baseurl', |
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); |
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// fix all targeted array elements |
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foreach ( $keys_to_update as $key ) { |
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$upload_dir[ $key ] = apply_filters( 'wp_hydra_domain', $upload_dir[ $key ] ); |
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} |
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return $upload_dir; |
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} |
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} |
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// initialize WP Hydra - Polycephaly FTW! |
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global $wp_hydra; |
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$wp_hydra = new WP_Hydra(); |
tyxla /
WP-Hydra
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