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wp-content/plugins/sitepress-multilingual-cms/classes/ajax/Factory.php

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+<?php
+
+namespace WPML\Ajax;
+
+use WPML\Collect\Support\Collection;
+use WPML\FP\Either;
+use WPML\FP\Fns;
+use WPML\FP\Json;
+use WPML\FP\Logic;
+use WPML\FP\Lst;
+use WPML\FP\Maybe;
+use WPML\FP\System\System;
+use WPML\LIB\WP\Hooks;
+use WPML\LIB\WP\Nonce;
+use function WPML\Container\execute;
+use function WPML\Container\make;
+use function WPML\FP\pipe;
+use function WPML\FP\System\getFilterFor as filter;
+use function WPML\FP\System\getValidatorFor as validate;
+
+class Factory implements \IWPML_AJAX_Action {
+
+	public function add_hooks() {
+		// :: Collection -> Collection
+		$filterEndPoint = filter( 'endpoint' )->using( 'wp_unslash' );
+
+		// :: Collection -> Collection
+		$decodeData = filter( 'data' )->using( Json::toCollection() )->defaultTo( 'wpml_collect' );
+
+		// :: Collection -> Either::Left( string ) | Either::Right( Collection )
+		$validateData = validate( 'data' )->using( Logic::isNotNull() )->error( 'Invalid json data' );
+
+		// $handleRequest :: Collection -> Either::Left(string) | Either::Right(mixed)
+		$handleRequest = function ( Collection $postData ) {
+			try {
+				return Maybe::of( $postData->get( 'endpoint' ) )
+				            ->map( pipe( make(), Lst::makePair( Fns::__, 'run' ) ) )
+				            ->map( execute( Fns::__, [ ':data' => $postData->get( 'data' ) ] ) )
+				            ->getOrElse( Either::left( 'End point not found' ) );
+			} catch ( \Exception $e ) {
+				return Either::left( $e->getMessage() );
+			}
+		};
+
+		Hooks::onAction( 'wp_ajax_wpml_action' )
+		     ->then( System::getPostData() ) // Either::right(Collection)
+		     ->then( $filterEndPoint )
+		     ->then( Nonce::verifyEndPoint() )
+		     ->then( $decodeData )
+		     ->then( $validateData )
+		     ->then( $handleRequest )
+		     ->then( 'wp_send_json_success' )
+		     ->onError( 'wp_send_json_error' );
+	}
+}

wp-content/plugins/sitepress-multilingual-cms/classes/ajax/Locale.php

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+<?php
+
+namespace WPML\Ajax;
+
+class Locale implements \IWPML_AJAX_Action, \IWPML_DIC_Action {
+
+	/** @var \SitePress */
+	private $sitePress;
+
+	public function __construct( \SitePress $sitePress ) {
+		$this->sitePress = $sitePress;
+	}
+
+	public function add_hooks() {
+		if ( is_admin() && ! $this->sitePress->check_if_admin_action_from_referer() ) {
+			add_filter( 'determine_locale', [ $this->sitePress, 'locale_filter' ], 10, 1 );
+		}
+	}
+}

wp-content/plugins/sitepress-multilingual-cms/classes/ajax/class-wpml-ajax-factory.php

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+<?php
+
+abstract class WPML_Ajax_Factory {
+
+	public function add_route( WPML_Ajax_Route $route ) {
+		$class_names = $this->get_class_names();
+		foreach ( $class_names as $class_name ) {
+			$route->add( $class_name );
+		}
+	}
+
+	abstract function get_class_names();
+	abstract function create( $class_name );
+}

wp-content/plugins/sitepress-multilingual-cms/classes/ajax/class-wpml-ajax-response.php

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+<?php
+
+class WPML_Ajax_Response {
+
+	private $success;
+	private $response_data;
+	
+	public function __construct( $success, $response_data ) {
+		$this->success       = $success;
+		$this->response_data = $response_data;
+	}
+	
+	public function send_json() {
+		if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
+			if ( $this->success ) {
+				wp_send_json_success( $this->response_data );
+			} else {
+				wp_send_json_error( $this->response_data );
+			}
+		} else {
+			throw new WPML_Not_Doing_Ajax_On_Send_Exception( $this );
+		}
+	}
+	
+	public function is_success() {
+		return $this->success;
+	}
+
+	public function get_response() {
+		return $this->response_data;
+	}
+}
+
+class WPML_Not_Doing_Ajax_On_Send_Exception extends Exception {
+
+	public $response;
+
+	public function __construct( $response ) {
+		parent::__construct( 'Not doing AJAX' );
+		$this->response = $response;
+	}
+};

wp-content/plugins/sitepress-multilingual-cms/classes/ajax/class-wpml-ajax-route.php

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+<?php
+
+class WPML_Ajax_Route {
+
+	const ACTION_PREFIX        = 'wp_ajax_';
+	const ACTION_PREFIX_LENGTH = 8;
+
+	/** @var  WPML_Ajax_Factory $factory */
+	private $factory;
+
+	public function __construct( WPML_Ajax_Factory $factory ) {
+		$this->factory = $factory;
+		$this->factory->add_route( $this );
+	}
+
+	public function add( $class_name ) {
+		add_action( self::ACTION_PREFIX . $class_name, array( $this, 'do_ajax' ) );
+	}
+
+	public function do_ajax() {
+		$action        = current_filter();
+		$class_name    = substr( $action, self::ACTION_PREFIX_LENGTH );
+		$ajax_handler  = $this->factory->create( $class_name );
+		$ajax_response = $ajax_handler->run();
+
+		$ajax_response->send_json();
+	}
+}

wp-content/plugins/sitepress-multilingual-cms/classes/ajax/class-wpml-tm-ajax.php

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+<?php
+
+/**
+ * @author OnTheGo Systems
+ */
+class WPML_TM_AJAX {
+	/**
+	 * @param string $action
+	 *
+	 * @return bool
+	 */
+	protected function is_valid_request( $action = '' ) {
+		if ( ! $action ) {
+			$action = array_key_exists( 'action', $_POST ) ? $_POST['action'] : '';
+		}
+
+		if ( ! array_key_exists( 'nonce', $_POST ) || ! $action
+			 || ! wp_verify_nonce( sanitize_key( $_POST['nonce'] ), $action ) ) {
+
+			wp_send_json_error(
+				__(
+					'You have attempted to submit data in a not legit way.',
+					'wpml-translation-management'
+				)
+			);
+
+			return false;
+		}
+
+		return true;
+	}
+
+}

wp-content/plugins/sitepress-multilingual-cms/classes/ajax/endpoints/Upload.php

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+<?php
+
+namespace WPML\Ajax\Endpoint;
+
+use WPML\Ajax\IHandler;
+use WPML\Collect\Support\Collection;
+use WPML\FP\Either;
+use WPML\FP\Fns;
+use WPML\FP\Obj;
+use function WPML\FP\curryN;
+
+class Upload implements IHandler {
+
+	public function run( Collection $data ) {
+
+		$upload = curryN( 2, function ( $path, $file ) {
+			$upload_dir = function ( $uploads ) use ( $path ) {
+				if ( $path ) {
+					$uploads['path']   = $uploads['basedir'] . '/' . $path;
+					$uploads['url']    = $uploads['baseurl'] . '/' . $path;
+					$uploads['subdir'] = $path;
+				}
+
+				return $uploads;
+			};
+
+			add_filter( 'upload_dir', $upload_dir );
+			$upload = wp_handle_upload( $file, [ 'test_form' => false ] );
+			remove_filter( 'upload_dir', $upload_dir );
+
+			return $upload;
+		} );
+
+		$resize = curryN( 2, function ( $settings, $file ) {
+			list( $max_width, $max_height, $crop ) = Obj::props( [ 'max_w', 'max_h', 'crop' ], $settings );
+
+			if ( $max_width && $max_height && function_exists( 'wp_get_image_editor' ) && 'image/svg+xml' !== $file['type'] ) {
+				$image = wp_get_image_editor( $file['file'] );
+				if ( ! is_wp_error( $image ) ) {
+					$image->resize( $max_width, $max_height, (bool) $crop );
+					$image->save( $file['file'] );
+				}
+			}
+
+			return $file;
+		} );
+
+		$handleError = function ( $file ) {
+			if ( Obj::has( 'error', $file ) ) {
+				$error_message = __( 'There was an error uploading the file, please try again!', 'sitepress' );
+				switch ( $file['error'] ) {
+					case UPLOAD_ERR_INI_SIZE;
+						$error_message = __( 'The uploaded file exceeds the upload_max_filesize directive in php.ini.', 'sitepress' );
+						break;
+					case UPLOAD_ERR_FORM_SIZE;
+						$error_message = sprintf( __( 'The uploaded file exceeds %s bytes.', 'sitepress' ), 100000 );
+						break;
+					case UPLOAD_ERR_PARTIAL;
+						$error_message = __( 'The uploaded file was only partially uploaded.', 'sitepress' );
+						break;
+					case UPLOAD_ERR_NO_FILE;
+						$error_message = __( 'No file was uploaded.', 'sitepress' );
+						break;
+					case UPLOAD_ERR_NO_TMP_DIR;
+						$error_message = __( 'Missing a temporary folder.', 'sitepress' );
+						break;
+					case UPLOAD_ERR_CANT_WRITE;
+						$error_message = __( 'Failed to write file to disk.', 'sitepress' );
+						break;
+					case UPLOAD_ERR_EXTENSION;
+						$error_message = __( 'A PHP extension stopped the file upload. PHP does not provide a way to ascertain which extension caused the file upload to stop; examining the list of loaded extensions with phpinfo() may help.', 'sitepress' );
+						break;
+				}
+
+				return Either::left( $error_message );
+			} else {
+				return Either::right( $file );
+			}
+		};
+
+		return Either::fromNullable( $data->get( 'name' ) )
+		             ->map( Obj::prop( Fns::__, $_FILES ) )
+		             ->map( $upload( $data->get( 'path' ) ) )
+		             ->chain( $handleError )
+		             ->map( $resize( $data->get( 'resize', [] ) ) );
+	}
+
+}

wp-content/plugins/sitepress-multilingual-cms/classes/ajax/interface-wpml-ajax-action-run.php

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+<?php
+
+interface IWPML_AJAX_Action_Run {
+	public function run();
+}