File "class-jetpack-wpcom-block-editor.php"
Full Path: /home/warrior1/public_html/languages/wp-content-20241001222009/plugins/jetpack/modules/wpcom-block-editor/class-jetpack-wpcom-block-editor.php
File size: 18.46 KB
MIME-type: text/x-php
Charset: utf-8
<?php
/**
* WordPress.com Block Editor
* Allow new block editor posts to be composed on WordPress.com.
* This is auto-loaded as of Jetpack v7.4 for sites connected to WordPress.com only.
*
* @package automattic/jetpack
*/
use Automattic\Jetpack\Connection\Tokens;
use Automattic\Jetpack\Status\Host;
/**
* WordPress.com Block editor for Jetpack
*/
class Jetpack_WPCOM_Block_Editor {
/**
* ID of the user who signed the nonce.
*
* @var int
*/
private $nonce_user_id;
/**
* An array to store auth cookies until we can determine if they should be sent
*
* @var array
*/
private $set_cookie_args;
/**
* Singleton
*/
public static function init() {
static $instance = false;
if ( ! $instance ) {
$instance = new Jetpack_WPCOM_Block_Editor();
}
return $instance;
}
/**
* Jetpack_WPCOM_Block_Editor constructor.
*/
private function __construct() {
$this->set_cookie_args = array();
add_action( 'init', array( $this, 'init_actions' ) );
}
/**
* Add in all hooks.
*/
public function init_actions() {
// Bail early if Jetpack's block editor extensions are disabled on the site.
/* This filter is documented in class.jetpack-gutenberg.php */
if ( ! apply_filters( 'jetpack_gutenberg', true ) ) {
return;
}
if ( $this->is_iframed_block_editor() ) {
add_action( 'admin_init', array( $this, 'disable_send_frame_options_header' ), 9 );
add_filter( 'admin_body_class', array( $this, 'add_iframed_body_class' ) );
}
require_once __DIR__ . '/functions.editor-type.php';
add_action( 'edit_form_top', 'Jetpack\EditorType\remember_classic_editor' );
add_action( 'login_init', array( $this, 'allow_block_editor_login' ), 1 );
add_action( 'enqueue_block_editor_assets', array( $this, 'enqueue_block_editor_assets' ), 9 );
add_action( 'enqueue_block_assets', array( $this, 'enqueue_block_assets' ) );
add_filter( 'mce_external_plugins', array( $this, 'add_tinymce_plugins' ) );
add_filter( 'block_editor_settings_all', 'Jetpack\EditorType\remember_block_editor', 10, 2 );
$this->enable_cross_site_auth_cookies();
}
/**
* Checks if we are embedding the block editor in an iframe in WordPress.com.
*
* @return bool Whether the current request is from the iframed block editor.
*/
public function is_iframed_block_editor() {
global $pagenow;
// phpcs:ignore WordPress.Security.NonceVerification
return ( 'post.php' === $pagenow || 'post-new.php' === $pagenow ) && ! empty( $_GET['frame-nonce'] );
}
/**
* Prevents frame options header from firing if this is a allowed iframe request.
*/
public function disable_send_frame_options_header() {
// phpcs:ignore WordPress.Security.NonceVerification, WordPress.Security.ValidatedSanitizedInput
if ( isset( $_GET['frame-nonce'] ) && $this->framing_allowed( $_GET['frame-nonce'] ) ) {
remove_action( 'admin_init', 'send_frame_options_header' );
}
}
/**
* Adds custom admin body class if this is a allowed iframe request.
*
* @param string $classes Admin body classes.
* @return string
*/
public function add_iframed_body_class( $classes ) {
// phpcs:ignore WordPress.Security.NonceVerification, WordPress.Security.ValidatedSanitizedInput
if ( isset( $_GET['frame-nonce'] ) && $this->framing_allowed( $_GET['frame-nonce'] ) ) {
$classes .= ' is-iframed ';
}
return $classes;
}
/**
* Checks to see if cookie can be set in current context. If 3rd party cookie blocking
* is enabled the editor can't load in iFrame, so emiting X-Frame-Options: DENY will
* force the editor to break out of the iFrame.
*/
private function check_iframe_cookie_setting() {
if ( ! isset( $_SERVER['QUERY_STRING'] ) || ! strpos( filter_var( wp_unslash( $_SERVER['QUERY_STRING'] ) ), 'calypsoify%3D1%26block-editor' ) || isset( $_COOKIE['wordpress_test_cookie'] ) ) {
return;
}
if ( isset( $_SERVER['REQUEST_URI'] ) && empty( $_GET['calypsoify_cookie_check'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
header( 'Location: ' . esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) . '&calypsoify_cookie_check=true' ) );
exit;
}
header( 'X-Frame-Options: DENY' );
exit;
}
/**
* Allows to iframe the login page if a user is logged out
* while trying to access the block editor from wordpress.com.
*/
public function allow_block_editor_login() {
// phpcs:ignore WordPress.Security.NonceVerification
if ( empty( $_REQUEST['redirect_to'] ) ) {
return;
}
// phpcs:ignore WordPress.Security.NonceVerification
$redirect_to = esc_url_raw( wp_unslash( $_REQUEST['redirect_to'] ) );
$this->check_iframe_cookie_setting();
$query = wp_parse_url( urldecode( $redirect_to ), PHP_URL_QUERY );
$args = wp_parse_args( $query );
// Check nonce and make sure this is a Gutenframe request.
if ( ! empty( $args['frame-nonce'] ) && $this->framing_allowed( $args['frame-nonce'] ) ) {
// If SSO is active, we'll let WordPress.com handle authentication...
if ( Jetpack::is_module_active( 'sso' ) ) {
// ...but only if it's not an Atomic site. They already do that.
if ( ! ( new Host() )->is_woa_site() ) {
add_filter( 'jetpack_sso_bypass_login_forward_wpcom', '__return_true' );
}
} else {
$_REQUEST['interim-login'] = true;
add_action( 'wp_login', array( $this, 'do_redirect' ) );
add_action( 'login_form', array( $this, 'add_login_html' ) );
add_filter( 'wp_login_errors', array( $this, 'add_login_message' ) );
remove_action( 'login_init', 'send_frame_options_header' );
wp_add_inline_style( 'login', '.interim-login #login{padding-top:8%}' );
}
}
}
/**
* Adds a login message.
*
* Intended to soften the expectation mismatch of ending up with a login screen rather than the editor.
*
* @param WP_Error $errors WP Error object.
* @return \WP_Error
*/
public function add_login_message( $errors ) {
$errors->remove( 'expired' );
$errors->add( 'info', __( 'Before we continue, please log in to your Jetpack site.', 'jetpack' ), 'message' );
return $errors;
}
/**
* Maintains the `redirect_to` parameter in login form links.
* Adds visual feedback of login in progress.
*/
public function add_login_html() {
?>
<input type="hidden" name="redirect_to" value="<?php echo isset( $_REQUEST['redirect_to'] ) ? esc_url( wp_unslash( $_REQUEST['redirect_to'] ) ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized ?>" />
<script type="application/javascript">
document.getElementById( 'loginform' ).addEventListener( 'submit' , function() {
document.getElementById( 'wp-submit' ).setAttribute( 'disabled', 'disabled' );
document.getElementById( 'wp-submit' ).value = '<?php echo esc_js( __( 'Logging In...', 'jetpack' ) ); ?>';
} );
</script>
<?php
}
/**
* Does the redirect to the block editor.
*/
public function do_redirect() {
wp_safe_redirect( $GLOBALS['redirect_to'] );
exit;
}
/**
* Checks whether this is an allowed iframe request.
*
* @param string $nonce Nonce to verify.
* @return bool
*/
public function framing_allowed( $nonce ) {
$verified = $this->verify_frame_nonce( $nonce, 'frame-' . Jetpack_Options::get_option( 'id' ) );
if ( is_wp_error( $verified ) ) {
wp_die( $verified ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}
if ( $verified && ! defined( 'IFRAME_REQUEST' ) ) {
define( 'IFRAME_REQUEST', true );
}
return (bool) $verified;
}
/**
* Verify that correct nonce was used with time limit.
*
* The user is given an amount of time to use the token, so therefore, since the
* UID and $action remain the same, the independent variable is the time.
*
* @param string $nonce Nonce that was used in the form to verify.
* @param string $action Should give context to what is taking place and be the same when nonce was created.
* @return boolean|WP_Error Whether the nonce is valid.
*/
public function verify_frame_nonce( $nonce, $action ) {
if ( empty( $nonce ) ) {
return false;
}
list( $expiration, $user_id, $hash ) = explode( ':', $nonce, 3 );
$this->nonce_user_id = (int) $user_id;
if ( ! $this->nonce_user_id ) {
return false;
}
$token = ( new Tokens() )->get_access_token( $this->nonce_user_id );
if ( ! $token ) {
return false;
}
/*
* Failures must return `false` (blocking the iframe) prior to the
* signature verification.
*/
add_filter( 'salt', array( $this, 'filter_salt' ), 10, 2 );
$expected_hash = wp_hash( "$expiration|$action|{$this->nonce_user_id}", 'jetpack_frame_nonce' );
remove_filter( 'salt', array( $this, 'filter_salt' ) );
if ( ! hash_equals( $hash, $expected_hash ) ) {
return false;
}
/*
* Failures may return `WP_Error` (showing an error in the iframe) after the
* signature verification passes.
*/
if ( time() > $expiration ) {
return new WP_Error( 'nonce_invalid_expired', 'Expired nonce.', array( 'status' => 401 ) );
}
// Check if it matches the current user, unless they're trying to log in.
if ( get_current_user_id() !== $this->nonce_user_id && ! doing_action( 'login_init' ) ) {
return new WP_Error( 'nonce_invalid_user_mismatch', 'User ID mismatch.', array( 'status' => 401 ) );
}
return true;
}
/**
* Filters the WordPress salt.
*
* @param string $salt Salt for the given scheme.
* @param string $scheme Authentication scheme.
* @return string
*/
public function filter_salt( $salt, $scheme ) {
if ( 'jetpack_frame_nonce' === $scheme ) {
$token = ( new Tokens() )->get_access_token( $this->nonce_user_id );
if ( $token ) {
$salt = $token->secret;
}
}
return $salt;
}
/**
* Enqueues the WordPress.com block editor integration assets for the editor.
*/
public function enqueue_block_editor_assets() {
global $pagenow;
// Bail if we're not in the post editor, but on the widget settings screen.
if ( is_customize_preview() || 'widgets.php' === $pagenow ) {
return;
}
$debug = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG;
$version = gmdate( 'Ymd' );
wp_enqueue_script(
'wpcom-block-editor-default-editor-script',
$debug
? '//widgets.wp.com/wpcom-block-editor/default.editor.js?minify=false'
: '//widgets.wp.com/wpcom-block-editor/default.editor.min.js',
array(
'jquery',
'lodash',
'wp-annotations',
'wp-compose',
'wp-data',
'wp-editor',
'wp-element',
'wp-rich-text',
),
$version,
true
);
wp_localize_script(
'wpcom-block-editor-default-editor-script',
'wpcomGutenberg',
array(
'richTextToolbar' => array(
'justify' => __( 'Justify', 'jetpack' ),
'underline' => __( 'Underline', 'jetpack' ),
),
)
);
if ( ( new Host() )->is_woa_site() ) {
wp_enqueue_script(
'wpcom-block-editor-wpcom-editor-script',
$debug
? '//widgets.wp.com/wpcom-block-editor/wpcom.editor.js?minify=false'
: '//widgets.wp.com/wpcom-block-editor/wpcom.editor.min.js',
array(
'lodash',
'wp-blocks',
'wp-data',
'wp-dom-ready',
'wp-plugins',
),
$version,
true
);
}
if ( $this->is_iframed_block_editor() ) {
wp_enqueue_script(
'wpcom-block-editor-calypso-editor-script',
$debug
? '//widgets.wp.com/wpcom-block-editor/calypso.editor.js?minify=false'
: '//widgets.wp.com/wpcom-block-editor/calypso.editor.min.js',
array(
'calypsoify_wpadminmods_js',
'jquery',
'lodash',
'react',
'wp-blocks',
'wp-data',
'wp-hooks',
'wp-tinymce',
'wp-url',
),
$version,
true
);
wp_enqueue_style(
'wpcom-block-editor-calypso-editor-styles',
$debug
? '//widgets.wp.com/wpcom-block-editor/calypso.editor.css?minify=false'
: '//widgets.wp.com/wpcom-block-editor/calypso.editor.min.css',
array(),
$version
);
}
}
/**
* Enqueues the WordPress.com block editor integration assets for both editor and front-end.
*/
public function enqueue_block_assets() {
// These styles are manually copied from //widgets.wp.com/wpcom-block-editor/default.view.css in order to
// improve the performance by avoiding an extra network request to download the CSS file on every page.
wp_add_inline_style( 'wp-block-library', '.has-text-align-justify{text-align:justify;}' );
}
/**
* Determines if the current $post contains a justified paragraph block.
*
* @return boolean true if justified paragraph is found, false otherwise.
*/
public function has_justified_block() {
global $post;
if ( ! $post instanceof WP_Post ) {
return false;
}
if ( ! has_blocks( $post ) ) {
return false;
}
return false !== strpos( $post->post_content, '<!-- wp:paragraph {"align":"justify"' );
}
/**
* Register the Tiny MCE plugins for the WordPress.com block editor integration.
*
* @param array $plugin_array An array of external Tiny MCE plugins.
* @return array External TinyMCE plugins.
*/
public function add_tinymce_plugins( $plugin_array ) {
if ( $this->is_iframed_block_editor() ) {
$debug = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG;
$plugin_array['gutenberg-wpcom-iframe-media-modal'] = add_query_arg(
'v',
gmdate( 'YW' ),
$debug
? '//widgets.wp.com/wpcom-block-editor/calypso.tinymce.js?minify=false'
: '//widgets.wp.com/wpcom-block-editor/calypso.tinymce.min.js'
);
}
return $plugin_array;
}
/**
* Ensures the authentication cookies are designated for cross-site access.
*/
private function enable_cross_site_auth_cookies() {
/**
* Allow plugins to disable the cross-site auth cookies.
*
* @since 8.1.1
*
* @param false bool Whether auth cookies should be disabled for cross-site access. False by default.
*/
if ( apply_filters( 'jetpack_disable_cross_site_auth_cookies', false ) ) {
return;
}
add_action( 'set_auth_cookie', array( $this, 'set_samesite_auth_cookies' ), 10, 5 );
add_action( 'set_logged_in_cookie', array( $this, 'set_samesite_logged_in_cookies' ), 10, 4 );
add_filter( 'send_auth_cookies', array( $this, 'maybe_send_cookies' ), 9999 );
}
/**
* Checks if we've stored any cookies to send and then sends them
* if the send_auth_cookies value is true.
*
* @param bool $send_cookies The filtered value that determines whether to send auth cookies.
*/
public function maybe_send_cookies( $send_cookies ) {
if ( ! empty( $this->set_cookie_args ) && $send_cookies ) {
array_map(
function ( $cookie ) {
call_user_func_array( 'jetpack_shim_setcookie', $cookie );
},
$this->set_cookie_args
);
$this->set_cookie_args = array();
return false;
}
return $send_cookies;
}
/**
* Gets the SameSite attribute to use in auth cookies.
*
* @param bool $secure Whether the connection is secure.
* @return string SameSite attribute to use on auth cookies.
*/
public function get_samesite_attr_for_auth_cookies( $secure ) {
$samesite = $secure ? 'None' : 'Lax';
/**
* Filters the SameSite attribute to use in auth cookies.
*
* @param string $samesite SameSite attribute to use in auth cookies.
*
* @since 8.1.1
*/
$samesite = apply_filters( 'jetpack_auth_cookie_samesite', $samesite );
return $samesite;
}
/**
* Generates cross-site auth cookies so they can be accessed by WordPress.com.
*
* @param string $auth_cookie Authentication cookie value.
* @param int $expire The time the login grace period expires as a UNIX timestamp.
* Default is 12 hours past the cookie's expiration time.
* @param int $expiration The time when the authentication cookie expires as a UNIX timestamp.
* Default is 14 days from now.
* @param int $user_id User ID.
* @param string $scheme Authentication scheme. Values include 'auth' or 'secure_auth'.
*/
public function set_samesite_auth_cookies( $auth_cookie, $expire, $expiration, $user_id, $scheme ) {
if ( wp_startswith( $scheme, 'secure_' ) ) {
$secure = true;
$auth_cookie_name = SECURE_AUTH_COOKIE;
} else {
$secure = false;
$auth_cookie_name = AUTH_COOKIE;
}
$samesite = $this->get_samesite_attr_for_auth_cookies( $secure );
$this->set_cookie_args[] = array(
$auth_cookie_name,
$auth_cookie,
array(
'expires' => $expire,
'path' => PLUGINS_COOKIE_PATH,
'domain' => COOKIE_DOMAIN,
'secure' => $secure,
'httponly' => true,
'samesite' => $samesite,
),
);
$this->set_cookie_args[] = array(
$auth_cookie_name,
$auth_cookie,
array(
'expires' => $expire,
'path' => ADMIN_COOKIE_PATH,
'domain' => COOKIE_DOMAIN,
'secure' => $secure,
'httponly' => true,
'samesite' => $samesite,
),
);
}
/**
* Generates cross-site logged in cookies so they can be accessed by WordPress.com.
*
* @param string $logged_in_cookie The logged-in cookie value.
* @param int $expire The time the login grace period expires as a UNIX timestamp.
* Default is 12 hours past the cookie's expiration time.
* @param int $expiration The time when the logged-in cookie expires as a UNIX timestamp.
* Default is 14 days from now.
* @param int $user_id User ID.
*/
public function set_samesite_logged_in_cookies( $logged_in_cookie, $expire, $expiration, $user_id ) {
$secure = is_ssl();
// Front-end cookie is secure when the auth cookie is secure and the site's home URL is forced HTTPS.
$secure_logged_in_cookie = $secure && 'https' === wp_parse_url( get_option( 'home' ), PHP_URL_SCHEME );
/** This filter is documented in core/src/wp-includes/pluggable.php */
$secure = apply_filters( 'secure_auth_cookie', $secure, $user_id );
/** This filter is documented in core/src/wp-includes/pluggable.php */
$secure_logged_in_cookie = apply_filters( 'secure_logged_in_cookie', $secure_logged_in_cookie, $user_id, $secure );
$samesite = $this->get_samesite_attr_for_auth_cookies( $secure_logged_in_cookie );
$this->set_cookie_args[] = array(
LOGGED_IN_COOKIE,
$logged_in_cookie,
array(
'expires' => $expire,
'path' => COOKIEPATH,
'domain' => COOKIE_DOMAIN,
'secure' => $secure_logged_in_cookie,
'httponly' => true,
'samesite' => $samesite,
),
);
if ( COOKIEPATH !== SITECOOKIEPATH ) {
$this->set_cookie_args[] = array(
LOGGED_IN_COOKIE,
$logged_in_cookie,
array(
'expires' => $expire,
'path' => SITECOOKIEPATH,
'domain' => COOKIE_DOMAIN,
'secure' => $secure_logged_in_cookie,
'httponly' => true,
'samesite' => $samesite,
),
);
}
}
}
Jetpack_WPCOM_Block_Editor::init();