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<?php

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/**

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* Class WPML_Request

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* @package wpml-core

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* @subpackage wpml-requests

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* @abstract

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abstract class WPML_Request {

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/** @var WPML_URL_Converter */

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protected $url_converter;

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protected $active_languages;

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protected $default_language;

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protected $qs_lang_cache;

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private $cookie;

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protected $wp_api;

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/**

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* @param WPML_URL_Converter $url_converter

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* @param array $active_languages

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* @param string $default_language

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* @param WPML_Cookie $cookie

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* @param WPML_WP_API $wp_api

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public function __construct( $url_converter, $active_languages, $default_language, $cookie, $wp_api ) {

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$this->url_converter = $url_converter;

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$this->active_languages = $active_languages;

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$this->default_language = $default_language;

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$this->cookie = $cookie;

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$this->wp_api = $wp_api;

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}

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abstract protected function get_cookie_name();

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/**

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* Determines the language of the current request.

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* @return string|false language code of the current request, determined from the requested url and the user's

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* cookie.

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abstract public function get_requested_lang();

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/**

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* Returns the current REQUEST_URI optionally filtered

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* @param null|int $filter filter to apply to the REQUEST_URI, takes the same arguments

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* as filter_var for the filter type.

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* @return string

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public function get_request_uri( $filter = null ) {

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$request_uri = isset( $_SERVER['REQUEST_URI'] ) ? $_SERVER['REQUEST_URI'] : '/';

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if ( $filter !== null ) {

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$request_uri = filter_var( $request_uri, $filter );

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}

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return $request_uri;

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}

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/**

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* @global $wpml_url_converter

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* @return string|false language code that can be determined from the currently requested URI.

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public function get_request_uri_lang() {

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$req_url = isset( $_SERVER['HTTP_HOST'] )

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? untrailingslashit( $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] ) : '';

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return $this->url_converter->get_language_from_url( $req_url );

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}

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/**

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* @return string language code stored in the user's wp-wpml_current_language cookie

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public function get_cookie_lang() {

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global $wpml_language_resolution;

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$cookie_name = $this->get_cookie_name();

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$cookie_value = $this->cookie->get_cookie( $cookie_name );

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$lang = $cookie_value ? substr( $cookie_value, 0, 10 ) : null;

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$lang = $wpml_language_resolution->is_language_active( $lang ) ? $lang : $this->default_language;

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return $lang;

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}

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/**

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* Checks whether hidden languages are to be displayed at the moment.

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* They are displayed in the frontend if the users has the respective option icl_show_hidden_languages set in his

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* user_meta. The are displayed in the backend for all admins with manage_option capabilities.

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* @return bool true if hidden languages are to be shown

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public function show_hidden() {

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return ! did_action( 'init' )

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|| ( get_user_meta( get_current_user_id(), 'icl_show_hidden_languages', true )

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|| ( is_admin() && current_user_can( 'manage_options' ) ) );

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}

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/**

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* Sets the language code of the current screen in the User's wp-wpml_current_language cookie

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* When user is not logged we must set cookie with JS to avoid issues with cached pages

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* @param string $lang_code

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public function set_language_cookie( $lang_code ) {

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global $sitepress;

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$cookie_name = $this->get_cookie_name();

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if ( is_user_logged_in() ) {

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if ( ! $this->cookie->headers_sent() ) {

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if ( preg_match(

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'@\.(css|js|png|jpg|gif|jpeg|bmp)@i',

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basename( preg_replace( '@\?.*$@', '', $_SERVER['REQUEST_URI'] ) )

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)

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|| isset( $_POST['icl_ajx_action'] ) || isset( $_POST['_ajax_nonce'] ) || defined( 'DOING_AJAX' )

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) {

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return;

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}

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$current_cookie_value = $this->cookie->get_cookie( $cookie_name );

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if ( ! $current_cookie_value || $current_cookie_value !== $lang_code ) {

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$cookie_domain = $this->get_cookie_domain();

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$cookie_path = defined( 'COOKIEPATH' ) ? COOKIEPATH : '/';

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$this->cookie->set_cookie( $cookie_name, $lang_code, time() + DAY_IN_SECONDS, $cookie_path, $cookie_domain );

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}

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}

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} elseif ( $sitepress->get_setting( WPML_Cookie_Setting::COOKIE_SETTING_FIELD ) ) {

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$wpml_cookie_scripts = new WPML_Cookie_Scripts( $cookie_name, $sitepress->get_current_language() );

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$wpml_cookie_scripts->add_hooks();

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}

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$_COOKIE[ $cookie_name ] = $lang_code;

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do_action( 'wpml_language_cookie_added', $lang_code );

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}

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/**

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* @return bool|string

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public function get_cookie_domain() {

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return defined( 'COOKIE_DOMAIN' ) ? COOKIE_DOMAIN : $this->get_server_host_name();

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}

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/**

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* Returns SERVER_NAME, or HTTP_HOST if the first is not available

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* @return string

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public function get_server_host_name() {

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$host = isset( $_SERVER['HTTP_HOST'] ) ? $_SERVER['HTTP_HOST'] : null;

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$host = $host !== null

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? $host

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: ( isset( $_SERVER['SERVER_NAME'] )

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? $_SERVER['SERVER_NAME']

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. ( isset( $_SERVER['SERVER_PORT'] ) && ! in_array( $_SERVER['SERVER_PORT'], array( 80, 443 ) )

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? ':' . $_SERVER['SERVER_PORT'] : '' )

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: '' );

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// Removes standard ports 443 (80 should be already omitted in all cases)

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$result = preg_replace( '@:[443]+([/]?)@', '$1', $host );

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return $result;

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}

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/**

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* Gets the source_language $_GET parameter from the HTTP_REFERER

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* @return string|bool

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public function get_source_language_from_referer() {

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$referer = isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : '';

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$query = wpml_parse_url( $referer, PHP_URL_QUERY );

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parse_str( $query, $query_parts );

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$source_lang = isset( $query_parts['source_lang'] ) ? $query_parts['source_lang'] : false;

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return $source_lang;

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}

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/**

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* @return mixed

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public function get_comment_language() {

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$comment_language = $this->default_language;

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if ( array_key_exists( WPML_WP_Comments::LANG_CODE_FIELD, $_POST ) ) {

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$comment_language = filter_var( $_POST[ WPML_WP_Comments::LANG_CODE_FIELD ], FILTER_SANITIZE_SPECIAL_CHARS );

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}

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return $comment_language;

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}

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}

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