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<?php

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/**

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* Class WPML_Backend_Request

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* @package wpml-core

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* @subpackage wpml-requests

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class WPML_Backend_Request extends WPML_Request {

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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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parent::__construct( $url_converter, $active_languages, $default_language, $cookie, $wp_api );

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global $wpml_url_filters;

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if ( strpos( (string) filter_var( $_SERVER['REQUEST_URI'] ), 'wpml_root_page=1' ) !== false

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|| $wpml_url_filters->frontend_uses_root() !== false

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) {

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WPML_Root_Page::init();

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}

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}

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public function check_if_admin_action_from_referer() {

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

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return strpos( $referer, strtolower( '/wp-admin/' ) ) !== false;

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}

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private function force_default() {

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return isset( $_GET['page'] )

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&& ( ( defined( 'WPML_ST_FOLDER' )

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&& $_GET['page'] === WPML_ST_FOLDER . '/menu/string-translation.php' )

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|| ( defined( 'WPML_TM_FOLDER' )

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&& $_GET['page'] === WPML_TM_FOLDER . '/menu/translations-queue.php' ) );

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}

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private function get_ajax_request_lang() {

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$al = $this->active_languages;

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$lang = isset( $_POST['lang'] ) && in_array( $_POST['lang'], $al, true ) ? sanitize_text_field( $_POST['lang'] ) : null;

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$lang = null === $lang ? ( $cookie_lang = $this->get_cookie_lang() ) : $lang;

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$lang = null === $lang && isset( $_SERVER['HTTP_REFERER'] )

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? $this->url_converter->get_language_from_url( $_SERVER['HTTP_REFERER'] ) : $lang;

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$lang = $lang ? $lang : ( isset( $cookie_lang ) ? $cookie_lang : $this->get_cookie_lang() );

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$lang = $lang ? $lang : $this->default_language;

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return $lang;

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}

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/**

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* Determines the requested language in the WP Admin backend from URI, $_POST, $_GET and cookies.

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* @return string requested language code

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public function get_requested_lang() {

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/**

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* @var WPML_Language_Resolution $wpml_language_resolution

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* @var WPML_Post_Translation $wpml_post_translations

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global $wpml_language_resolution, $wpml_post_translations;

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$url_lang_param = '';

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if ( isset( $_GET['lang'] ) ) {

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$url_lang_param = filter_var( $_GET['lang'], FILTER_SANITIZE_FULL_SPECIAL_CHARS );

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}

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$icl_post_language = '';

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if ( isset( $_POST['icl_post_language'] ) ) {

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$icl_post_language = filter_var( $_POST['icl_post_language'], FILTER_SANITIZE_FULL_SPECIAL_CHARS );

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}

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if ( $this->force_default() === true ) {

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$lang = $this->default_language;

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} elseif ( $url_lang_param

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&& $wpml_language_resolution->is_language_active( $url_lang_param, true )

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) {

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$lang = $url_lang_param;

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} elseif ( wpml_is_ajax() ) {

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$lang = $this->get_ajax_request_lang();

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} elseif ( $icl_post_language

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&& $wpml_language_resolution->is_language_active( $icl_post_language )

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) {

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$lang = $icl_post_language;

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} elseif ( isset( $_GET['p'] )

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&& ( $p = (int) $_GET['p'] ) > 0

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&& (bool) ( $posts_lang = $wpml_post_translations->get_element_lang_code( $p ) ) === true

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) {

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$lang = $posts_lang;

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} else {

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$lang = $this->get_cookie_lang();

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}

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return $lang;

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}

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protected function get_cookie_name() {

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return wpml_is_ajax() && $this->check_if_admin_action_from_referer() === false

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? WPML_Frontend_Request::COOKIE_NAME : 'wp-wpml_current_admin_language_' . md5( $this->get_cookie_domain() );

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}

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}

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