class.jetpack-network.php — Jetpack – WP Security, Backup, Speed, & Growth 5.8.4

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class.jetpack-network.php

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1	<?php
2
3	/**
4	* Used to manage Jetpack installation on Multisite Network installs
5	*
6	* SINGLETON: To use call Jetpack_Network::init()
7	*
8	* DO NOT USE ANY STATIC METHODS IN THIS CLASS!!!!!!
9	*
10	* @since 2.9
11	*/
12	class Jetpack_Network {
13
14	/**
15	* Holds a static copy of Jetpack_Network for the singleton
16	*
17	* @since 2.9
18	* @var Jetpack_Network
19	*/
20	private static $instance = null;
21
22	/**
23	* Name of the network wide settings
24	*
25	* @since 2.9
26	* @var string
27	*/
28	private $settings_name = 'jetpack-network-settings';
29
30	/**
31	* Defaults for settings found on the Jetpack > Settings page
32	*
33	* @since 2.9
34	* @var array
35	*/
36	private $setting_defaults = array(
37	'auto-connect' => 0,
38	'sub-site-connection-override' => 1,
39	//'manage_auto_activated_modules' => 0,
40	);
41
42	/**
43	* Constructor
44	*
45	* @since 2.9
46	*/
47	private function __construct() {
48	require_once( ABSPATH . '/wp-admin/includes/plugin.php' ); // For the is_plugin... check
49	require_once( JETPACK__PLUGIN_DIR . 'modules/protect/shared-functions.php' ); // For managing the global whitelist
50	/*
51	* Sanity check to ensure the install is Multisite and we
52	* are in Network Admin
53	*/
54	if ( is_multisite() && is_network_admin() ) {
55	add_action( 'network_admin_menu', array( $this, 'add_network_admin_menu' ) );
56	add_action( 'network_admin_edit_jetpack-network-settings', array( $this, 'save_network_settings_page' ), 10, 0 );
57	add_filter( 'admin_body_class', array( $this, 'body_class' ) );
58
59	if ( isset( $_GET['page'] ) && 'jetpack' == $_GET['page'] ) {
60	add_action( 'admin_init', array( $this, 'jetpack_sites_list' ) );
61	}
62	}
63
64	/*
65	* Things that should only run on multisite
66	*/
67	if ( is_multisite() && is_plugin_active_for_network( 'jetpack/jetpack.php' ) ) {
68	add_action( 'wp_before_admin_bar_render', array( $this, 'add_to_menubar' ) );
69
70	/*
71	* If admin wants to automagically register new sites set the hook here
72	*
73	* This is a hacky way because xmlrpc is not available on wpmu_new_blog
74	*/
75	if ( $this->get_option( 'auto-connect' ) == 1 ) {
76	add_action( 'wpmu_new_blog', array( $this, 'do_automatically_add_new_site' ) );
77	}
78	}
79
80	// Remove the toggles for 2.9, re-evaluate how they're done and added for a 3.0 release. They don't feel quite right yet.
81	// add_filter( 'jetpack_get_default_modules', array( $this, 'set_auto_activated_modules' ) );
82	}
83
84	/**
85	* Sets which modules get activated by default on subsite connection.
86	* Modules can be set in Network Admin > Jetpack > Settings
87	*
88	* @since 2.9
89	*
90	* @param array $modules
91	*
92	* @return array
93	**/
94	public function set_auto_activated_modules( $modules ) {
95	return $modules;
96
97	/* Remove the toggles for 2.9, re-evaluate how they're done and added for a 3.0 release. They don't feel quite right yet.
98	if( 1 == $this->get_option( 'manage_auto_activated_modules' ) ) {
99	return (array) $this->get_option( 'modules' );
100	} else {
101	return $modules;
102	}
103	*/
104	}
105
106	/**
107	* Registers new sites upon creation
108	*
109	* @since 2.9
110	* @uses wpmu_new_blog
111	*
112	* @param int $blog_id
113	**/
114	public function do_automatically_add_new_site( $blog_id ) {
115	$this->do_subsiteregister( $blog_id );
116	}
117
118	/**
119	* Adds .network-admin class to the body tag
120	* Helps distinguish network admin JP styles from regular site JP styles
121	*
122	* @since 2.9
123	*/
124	public function body_class( $classes ) {
125	return trim( $classes ) . ' network-admin ';
126	}
127
128	/**
129	* Provides access to an instance of Jetpack_Network
130	*
131	* This is how the Jetpack_Network object should always be accessed
132	*
133	* @since 2.9
134	* @return Jetpack_Network
135	*/
136	public static function init() {
137	if ( ! self::$instance \|\| ! is_a( self::$instance, 'Jetpack_Network' ) ) {
138	self::$instance = new Jetpack_Network;
139	}
140
141	return self::$instance;
142	}
143
144	/**
145	* Registers the Multisite admin bar menu item shortcut.
146	* This shortcut helps users quickly and easily navigate to the Jetpack Network Admin
147	* menu from anywhere in their network.
148	*
149	* @since 2.9
150	*/
151	public function register_menubar() {
152	add_action( 'wp_before_admin_bar_render', array( $this, 'add_to_menubar' ) );
153	}
154
155	/**
156	* Runs when Jetpack is deactivated from the network admin plugins menu.
157	* Each individual site will need to have Jetpack::disconnect called on it.
158	* Site that had Jetpack individually enabled will not be disconnected as
159	* on Multisite individually activated plugins are still activated when
160	* a plugin is deactivated network wide.
161	*
162	* @since 2.9
163	**/
164	public function deactivate() {
165	// Only fire if in network admin
166	if ( ! is_network_admin() ) {
167	return;
168	}
169
170	$sites = get_sites();
171
172	foreach ( $sites as $s ) {
173	switch_to_blog( $s->blog_id );
174	$active_plugins = get_option( 'active_plugins' );
175
176	/*
177	* If this plugin was activated in the subsite individually
178	* we do not want to call disconnect. Plugins activated
179	* individually (before network activation) stay activated
180	* when the network deactivation occurs
181	*/
182	if ( ! in_array( 'jetpack/jetpack.php', $active_plugins ) ) {
183	Jetpack::disconnect();
184	}
185	}
186	restore_current_blog();
187	}
188
189	/**
190	* Adds a link to the Jetpack Network Admin page in the network admin menu bar.
191	*
192	* @since 2.9
193	**/
194	public function add_to_menubar() {
195	global $wp_admin_bar;
196	// Don't show for logged out users or single site mode.
197	if ( ! is_user_logged_in() \|\| ! is_multisite() ) {
198	return;
199	}
200
201	$wp_admin_bar->add_node( array(
202	'parent' => 'network-admin',
203	'id' => 'network-admin-jetpack',
204	'title' => __( 'Jetpack', 'jetpack' ),
205	'href' => $this->get_url( 'network_admin_page' ),
206	) );
207	}
208
209	/**
210	* Returns various URL strings. Factory like
211	*
212	* $args can be a string or an array.
213	* If $args is an array there must be an element called name for the switch statement
214	*
215	* Currently supports:
216	* - subsiteregister: Pass array( 'name' => 'subsiteregister', 'site_id' => SITE_ID )
217	* - network_admin_page: Provides link to /wp-admin/network/JETPACK
218	* - subsitedisconnect: Pass array( 'name' => 'subsitedisconnect', 'site_id' => SITE_ID )
219	*
220	* @since 2.9
221	*
222	* @param Mixed $args
223	*
224	* @return String
225	**/
226	public function get_url( $args ) {
227	$url = null; // Default url value
228
229	if ( is_string( $args ) ) {
230	$name = $args;
231	} else {
232	$name = $args['name'];
233	}
234
235	switch ( $name ) {
236	case 'subsiteregister':
237	if ( ! isset( $args['site_id'] ) ) {
238	break; // If there is not a site id present we cannot go further
239	}
240	$url = network_admin_url(
241	'admin.php?page=jetpack&action=subsiteregister&site_id='
242	. $args['site_id']
243	);
244	break;
245
246	case 'network_admin_page':
247	$url = network_admin_url( 'admin.php?page=jetpack' );
248	break;
249
250	case 'subsitedisconnect':
251	if ( ! isset( $args['site_id'] ) ) {
252	break; // If there is not a site id present we cannot go further
253	}
254	$url = network_admin_url(
255	'admin.php?page=jetpack&action=subsitedisconnect&site_id='
256	. $args['site_id']
257	);
258	break;
259	}
260
261	return $url;
262	}
263
264	/**
265	* Adds the Jetpack menu item to the Network Admin area
266	*
267	* @since 2.9
268	*/
269	public function add_network_admin_menu() {
270	add_menu_page( __( 'Jetpack', 'jetpack' ), __( 'Jetpack', 'jetpack' ), 'jetpack_network_admin_page', 'jetpack', array( $this, 'network_admin_page' ), 'div', 3 );
271	add_submenu_page( 'jetpack', __( 'Jetpack Sites', 'jetpack' ), __( 'Sites', 'jetpack' ), 'jetpack_network_sites_page', 'jetpack', array( $this, 'network_admin_page' ) );
272	add_submenu_page( 'jetpack', __( 'Settings', 'jetpack' ), __( 'Settings', 'jetpack' ), 'jetpack_network_settings_page', 'jetpack-settings', array( $this, 'render_network_admin_settings_page' ) );
273
274	/**
275	* As jetpack_register_genericons is by default fired off a hook,
276	* the hook may have already fired by this point.
277	* So, let's just trigger it manually.
278	*/
279	require_once( JETPACK__PLUGIN_DIR . '_inc/genericons.php' );
280	jetpack_register_genericons();
281
282	if ( ! wp_style_is( 'jetpack-icons', 'registered' ) ) {
283	wp_register_style( 'jetpack-icons', plugins_url( 'css/jetpack-icons.min.css', JETPACK__PLUGIN_FILE ), false, JETPACK__VERSION );
284	}
285
286	add_action( 'admin_enqueue_scripts', array( $this, 'admin_menu_css' ) );
287	}
288
289	/**
290	* Adds JP menu icon
291	*
292	* @since 2.9
293	**/
294	function admin_menu_css() {
295	wp_enqueue_style( 'jetpack-icons' );
296	}
297
298	/**
299	* Provides functionality for the Jetpack > Sites page.
300	* Does not do the display!
301	*
302	* @since 2.9
303	*/
304	public function jetpack_sites_list() {
305	Jetpack::init();
306
307	if ( isset( $_GET['action'] ) ) {
308	switch ( $_GET['action'] ) {
309	case 'subsiteregister':
310	/*
311	* @todo check_admin_referer( 'jetpack-subsite-register' );
312	*/
313	Jetpack::log( 'subsiteregister' );
314
315	// If !$_GET['site_id'] stop registration and error
316	if ( ! isset( $_GET['site_id'] ) \|\| empty( $_GET['site_id'] ) ) {
317	// Log error to state cookie for display later
318	/**
319	* @todo Make state messages show on Jetpack NA pages
320	**/
321	Jetpack::state( 'missing_site_id', esc_html__( 'Site ID must be provided to register a sub-site.', 'jetpack' ) );
322	break;
323	}
324
325	// Send data to register endpoint and retrieve shadow blog details
326	$result = $this->do_subsiteregister();
327	$url = $this->get_url( 'network_admin_page' );
328
329	if ( is_wp_error( $result ) ) {
330	$url = add_query_arg( 'action', 'connection_failed', $url );
331	} else {
332	$url = add_query_arg( 'action', 'connected', $url );
333	}
334
335	wp_safe_redirect( $url );
336	exit;
337
338	case 'subsitedisconnect':
339	Jetpack::log( 'subsitedisconnect' );
340
341	if ( ! isset( $_GET['site_id'] ) \|\| empty( $_GET['site_id'] ) ) {
342	Jetpack::state( 'missing_site_id', esc_html__( 'Site ID must be provided to disconnect a sub-site.', 'jetpack' ) );
343	break;
344	}
345
346	$this->do_subsitedisconnect();
347	break;
348
349	case 'connected':
350	case 'connection_failed':
351	add_action( 'jetpack_notices', array( $this, 'show_jetpack_notice' ) );
352	break;
353	}
354	}
355	}
356
357	public function show_jetpack_notice() {
358	if ( isset( $_GET['action'] ) && 'connected' == $_GET['action'] ) {
359	$notice = __( 'Site successfully connected.', 'jetpack' );
360	} else if ( isset( $_GET['action'] ) && 'connection_failed' == $_GET['action'] ) {
361	$notice = __( 'Site connection <strong>failed</strong>', 'jetpack' );
362	}
363
364	Jetpack::init()->load_view( 'admin/network-admin-alert.php', array( 'notice' => $notice ) );
365	}
366
367	/**
368	* Disconnect functionality for an individual site
369	*
370	* @since 2.9
371	* @see Jetpack_Network::jetpack_sites_list()
372	*/
373	public function do_subsitedisconnect( $site_id = null ) {
374	if ( ! current_user_can( 'jetpack_disconnect' ) ) {
375	return;
376	}
377	$site_id = ( is_null( $site_id ) ) ? $_GET['site_id'] : $site_id;
378	switch_to_blog( $site_id );
379	Jetpack::disconnect();
380	restore_current_blog();
381	}
382
383	/**
384	* Registers a subsite with the Jetpack servers
385	*
386	* @since 2.9
387	* @todo Break apart into easier to manage chunks that can be unit tested
388	* @see Jetpack_Network::jetpack_sites_list();
389	*/
390	public function do_subsiteregister( $site_id = null ) {
391	if ( ! current_user_can( 'jetpack_disconnect' ) ) {
392	return;
393	}
394
395	if ( Jetpack::is_development_mode() ) {
396	return;
397	}
398
399	$jp = Jetpack::init();
400
401	// Figure out what site we are working on
402	$site_id = ( is_null( $site_id ) ) ? $_GET['site_id'] : $site_id;
403
404	// better to try (and fail) to set a higher timeout than this system
405	// supports than to have register fail for more users than it should
406	$timeout = Jetpack::set_min_time_limit( 60 ) / 2;
407
408	// The blog id on WordPress.com of the primary network site
409	$network_wpcom_blog_id = Jetpack_Options::get_option( 'id' );
410
411	/*
412	* Here we need to switch to the subsite
413	* For the registration process we really only hijack how it
414	* works for an individual site and pass in some extra data here
415	*/
416	switch_to_blog( $site_id );
417
418	// Save the secrets in the subsite so when the wpcom server does a pingback it
419	// will be able to validate the connection
420	$secrets = $jp->generate_secrets( 'register' );
421	if (
422	empty( $secrets['secret_1'] ) \|\|
423	empty( $secrets['secret_2'] ) \|\|
424	empty( $secrets['exp'] )
425	) {
426	return new Jetpack_Error( 'missing_secrets' );
427	}
428
429	// Gra info for gmt offset
430	$gmt_offset = get_option( 'gmt_offset' );
431	if ( ! $gmt_offset ) {
432	$gmt_offset = 0;
433	}
434
435	/*
436	* Get the stats_option option from the db.
437	* It looks like the server strips this out so maybe it is not necessary?
438	* Does it match the Jetpack site with the old stats plugin id?
439	*
440	* @todo Find out if sending the stats_id is necessary
441	*/
442	$stat_options = get_option( 'stats_options' );
443	$stat_id = $stat_options = isset( $stats_options['blog_id'] ) ? $stats_options['blog_id'] : null;
444	$user_id = get_current_user_id();
445
446	$tracks_identity = jetpack_tracks_get_identity( $user_id );
447
448	/**
449	* Both `state` and `user_id` need to be sent in the request, even though they are the same value.
450	* Connecting via the network admin combines `register()` and `authorize()` methods into one step,
451	* because we assume the main site is already authorized. `state` is used to verify the `register()`
452	* request, while `user_id()` is used to create the token in the `authorize()` request.
453	*/
454	$args = array(
455	'method' => 'POST',
456	'body' => array(
457	'network_url' => $this->get_url( 'network_admin_page' ),
458	'network_wpcom_blog_id' => $network_wpcom_blog_id,
459	'siteurl' => site_url(),
460	'home' => home_url(),
461	'gmt_offset' => $gmt_offset,
462	'timezone_string' => (string) get_option( 'timezone_string' ),
463	'site_name' => (string) get_option( 'blogname' ),
464	'secret_1' => $secrets['secret_1'],
465	'secret_2' => $secrets['secret_2'],
466	'site_lang' => get_locale(),
467	'timeout' => $timeout,
468	'stats_id' => $stat_id, // Is this still required?
469	'user_id' => $user_id,
470	'state' => $user_id,
471	'_ui' => $tracks_identity['_ui'],
472	'_ut' => $tracks_identity['_ut'],
473	'jetpack_version' => JETPACK__VERSION
474	),
475	'headers' => array(
476	'Accept' => 'application/json',
477	),
478	'timeout' => $timeout,
479	);
480
481	Jetpack::apply_activation_source_to_args( $args['body'] );
482
483	// Attempt to retrieve shadow blog details
484	$response = Jetpack_Client::_wp_remote_request(
485	Jetpack::fix_url_for_bad_hosts( Jetpack::api_url( 'subsiteregister' ) ), $args, true
486	);
487
488	/*
489	* $response should either be invalid or contain:
490	* - jetpack_id => id
491	* - jetpack_secret => blog_token
492	* - jetpack_public
493	*
494	* Store the wpcom site details
495	*/
496	$valid_response = $jp->validate_remote_register_response( $response );
497
498	if ( is_wp_error( $valid_response ) \|\| ! $valid_response ) {
499	restore_current_blog();
500	return $valid_response;
501	}
502
503	// Grab the response values to work with
504	$code = wp_remote_retrieve_response_code( $response );
505	$entity = wp_remote_retrieve_body( $response );
506	if ( $entity ) {
507	$json = json_decode( $entity );
508	} else {
509	$json = false;
510	}
511
512	if ( empty( $json->jetpack_secret ) \|\| ! is_string( $json->jetpack_secret ) ) {
513	restore_current_blog();
514	return new Jetpack_Error( 'jetpack_secret', '', $code );
515	}
516
517	if ( isset( $json->jetpack_public ) ) {
518	$jetpack_public = (int) $json->jetpack_public;
519	} else {
520	$jetpack_public = false;
521	}
522
523	Jetpack_Options::update_options( array(
524	'id' => (int) $json->jetpack_id,
525	'blog_token' => (string) $json->jetpack_secret,
526	'public' => $jetpack_public,
527	) );
528
529	/*
530	* Update the subsiteregister method on wpcom so that it also sends back the
531	* token in this same request
532	*/
533	$is_master_user = ! Jetpack::is_active();
534	Jetpack::update_user_token(
535	get_current_user_id(),
536	sprintf( '%s.%d', $json->token->secret, get_current_user_id() ),
537	$is_master_user
538	);
539
540	Jetpack::activate_default_modules();
541
542	restore_current_blog();
543	}
544
545	/**
546	* Handles the displaying of all sites on the network that are
547	* dis/connected to Jetpack
548	*
549	* @since 2.9
550	* @see Jetpack_Network::jetpack_sites_list()
551	*/
552	function network_admin_page() {
553	global $current_site;
554	$this->network_admin_page_header();
555
556	$jp = Jetpack::init();
557
558	// We should be, but ensure we are on the main blog
559	switch_to_blog( $current_site->blog_id );
560	$main_active = $jp->is_active();
561	restore_current_blog();
562
563	// If we are in dev mode, just show the notice and bail
564	if ( Jetpack::is_development_mode() ) {
565	Jetpack::show_development_mode_notice();
566	return;
567	}
568
569	/*
570	* Ensure the main blog is connected as all other subsite blog
571	* connections will feed off this one
572	*/
573	if ( ! $main_active ) {
574	$url = $this->get_url( array(
575	'name' => 'subsiteregister',
576	'site_id' => 1,
577	) );
578	$data = array( 'url' => $jp->build_connect_url() );
579	Jetpack::init()->load_view( 'admin/must-connect-main-blog.php', $data );
580
581	return;
582	}
583
584	require_once( 'class.jetpack-network-sites-list-table.php' );
585	$myListTable = new Jetpack_Network_Sites_List_Table();
586	echo '<div class="wrap"><h2>' . __( 'Sites', 'jetpack' ) . '</h2>';
587	echo '<form method="post">';
588	$myListTable->prepare_items();
589	$myListTable->display();
590	echo '</form></div>';
591
592	$this->network_admin_page_footer();
593	}
594
595	/**
596	* Stylized JP header formatting
597	*
598	* @since 2.9
599	*/
600	function network_admin_page_header() {
601	global $current_user;
602
603	$is_connected = Jetpack::is_active();
604
605	$data = array(
606	'is_connected' => $is_connected
607	);
608	Jetpack::init()->load_view( 'admin/network-admin-header.php', $data );
609	}
610
611	/**
612	* Stylized JP footer formatting
613	*
614	* @since 2.9
615	*/
616	function network_admin_page_footer() {
617	Jetpack::init()->load_view( 'admin/network-admin-footer.php' );
618	}
619
620	/**
621	* Fires when the Jetpack > Settings page is saved.
622	*
623	* @since 2.9
624	*/
625	public function save_network_settings_page() {
626
627	if ( ! wp_verify_nonce( $_POST['_wpnonce'], 'jetpack-network-settings' ) ) {
628	// no nonce, push back to settings page
629	wp_safe_redirect(
630	add_query_arg(
631	array( 'page' => 'jetpack-settings' ),
632	network_admin_url( 'admin.php' )
633	)
634	);
635	exit();
636	}
637
638	// try to save the Protect whitelist before anything else, since that action can result in errors
639	$whitelist = str_replace( ' ', '', $_POST['global-whitelist'] );
640	$whitelist = explode( PHP_EOL, $whitelist );
641	$result = jetpack_protect_save_whitelist( $whitelist, $global = true );
642	if ( is_wp_error( $result ) ) {
643	wp_safe_redirect(
644	add_query_arg(
645	array( 'page' => 'jetpack-settings', 'error' => 'jetpack_protect_whitelist' ),
646	network_admin_url( 'admin.php' )
647	)
648	);
649	exit();
650	}
651
652	/*
653	* Fields
654	*
655	* auto-connect - Checkbox for global Jetpack connection
656	* sub-site-connection-override - Allow sub-site admins to (dis)reconnect with their own Jetpack account
657	*/
658	$auto_connect = 0;
659	if ( isset( $_POST['auto-connect'] ) ) {
660	$auto_connect = 1;
661	}
662
663	$sub_site_connection_override = 0;
664	if ( isset( $_POST['sub-site-connection-override'] ) ) {
665	$sub_site_connection_override = 1;
666	}
667
668	/* Remove the toggles for 2.9, re-evaluate how they're done and added for a 3.0 release. They don't feel quite right yet.
669	$manage_auto_activated_modules = 0;
670	if ( isset( $_POST['manage_auto_activated_modules'] ) ) {
671	$manage_auto_activated_modules = 1;
672	}
673
674	$modules = array();
675	if ( isset( $_POST['modules'] ) ) {
676	$modules = $_POST['modules'];
677	}
678	*/
679
680	$data = array(
681	'auto-connect' => $auto_connect,
682	'sub-site-connection-override' => $sub_site_connection_override,
683	//'manage_auto_activated_modules' => $manage_auto_activated_modules,
684	//'modules' => $modules,
685	);
686
687	update_site_option( $this->settings_name, $data );
688	wp_safe_redirect(
689	add_query_arg(
690	array( 'page' => 'jetpack-settings', 'updated' => 'true' ),
691	network_admin_url( 'admin.php' )
692	)
693	);
694	exit();
695	}
696
697	public function render_network_admin_settings_page() {
698	$this->network_admin_page_header();
699	$options = wp_parse_args( get_site_option( $this->settings_name ), $this->setting_defaults );
700
701	$modules = array();
702	$module_slugs = Jetpack::get_available_modules();
703	foreach ( $module_slugs as $slug ) {
704	$module = Jetpack::get_module( $slug );
705	$module['module'] = $slug;
706	$modules[] = $module;
707	}
708
709	usort( $modules, array( 'Jetpack', 'sort_modules' ) );
710
711	if ( ! isset( $options['modules'] ) ) {
712	$options['modules'] = $modules;
713	}
714
715	$data = array(
716	'modules' => $modules,
717	'options' => $options,
718	'jetpack_protect_whitelist' => jetpack_protect_format_whitelist(),
719	);
720
721	Jetpack::init()->load_view( 'admin/network-settings.php', $data );
722	$this->network_admin_page_footer();
723	}
724
725	/**
726	* Updates a site wide option
727	*
728	* @since 2.9
729	*
730	* @param string $key
731	* @param mixed $value
732	*
733	* @return boolean
734	**/
735	public function update_option( $key, $value ) {
736	$options = get_site_option( $this->settings_name, $this->setting_defaults );
737	$options[ $key ] = $value;
738
739	return update_site_option( $this->settings_name, $options );
740	}
741
742	/**
743	* Retrieves a site wide option
744	*
745	* @since 2.9
746	*
747	* @param string $name - Name of the option in the database
748	**/
749	public function get_option( $name ) {
750	$options = get_site_option( $this->settings_name, $this->setting_defaults );
751	$options = wp_parse_args( $options, $this->setting_defaults );
752
753	if ( ! isset( $options[ $name ] ) ) {
754	$options[ $name ] = null;
755	}
756
757	return $options[ $name ];
758	}
759
760	}
761
762	// end class
763