<?php
/**
 * Multisite network settings administration panel.
 *
 * @package WordPress
 * @subpackage Multisite
 * @since 3.0.0
 */

/** Load WordPress Administration Bootstrap */
require_once __DIR__ . '/admin.php';

/** WordPress Translation Installation API */
require_once ABSPATH . 'wp-admin/includes/translation-install.php';

if ( ! current_user_can( 'manage_network_options' ) ) {
	wp_die( __( 'Sorry, you are not allowed to access this page.' ), 403 );
}

$title       = __( 'Network Settings' );
$parent_file = 'settings.php';

// Handle network admin email change requests.
if ( ! empty( $_GET['network_admin_hash'] ) ) {
	$new_admin_details = get_site_option( 'network_admin_hash' );
	$redirect          = 'settings.php?updated=false';
	if ( is_array( $new_admin_details ) && hash_equals( $new_admin_details['hash'], $_GET['network_admin_hash'] ) && ! empty( $new_admin_details['newemail'] ) ) {
		update_site_option( 'admin_email', $new_admin_details['newemail'] );
		delete_site_option( 'network_admin_hash' );
		delete_site_option( 'new_admin_email' );
		$redirect = 'settings.php?updated=true';
	}
	wp_redirect( network_admin_url( $redirect ) );
	exit;
} elseif ( ! empty( $_GET['dismiss'] ) && 'new_network_admin_email' === $_GET['dismiss'] ) {
	check_admin_referer( 'dismiss_new_network_admin_email' );
	delete_site_option( 'network_admin_hash' );
	delete_site_option( 'new_admin_email' );
	wp_redirect( network_admin_url( 'settings.php?updated=true' ) );
	exit;
}

add_action( 'admin_head', 'network_settings_add_js' );

get_current_screen()->add_help_tab(
	array(
		'id'      => 'overview',
		'title'   => __( 'Overview' ),
		'content' =>
			'<p>' . __( 'This screen sets and changes options for the network as a whole. The first site is the main site in the network and network options are pulled from that original site’s options.' ) . '</p>' .
			'<p>' . __( 'Operational settings has fields for the network’s name and admin email.' ) . '</p>' .
			'<p>' . __( 'Registration settings can disable/enable public signups. If you let others sign up for a site, install spam plugins. Spaces, not commas, should separate names banned as sites for this network.' ) . '</p>' .
			'<p>' . __( 'New site settings are defaults applied when a new site is created in the network. These include welcome email for when a new site or user account is registered, and what᾿s put in the first post, page, comment, comment author, and comment URL.' ) . '</p>' .
			'<p>' . __( 'Upload settings control the size of the uploaded files and the amount of available upload space for each site. You can change the default value for specific sites when you edit a particular site. Allowed file types are also listed (space separated only).' ) . '</p>' .
			'<p>' . __( 'You can set the language, and the translation files will be automatically downloaded and installed (available if your filesystem is writable).' ) . '</p>' .
			'<p>' . __( 'Menu setting enables/disables the plugin menus from appearing for non super admins, so that only super admins, not site admins, have access to activate plugins.' ) . '</p>' .
			'<p>' . __( 'Super admins can no longer be added on the Options screen. You must now go to the list of existing users on Network Admin > Users and click on Username or the Edit action link below that name. This goes to an Edit User page where you can check a box to grant super admin privileges.' ) . '</p>',
	)
);

get_current_screen()->set_help_sidebar(
	'<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
	'<p>' . __( '<a href="https://codex.wordpress.org/Network_Admin_Settings_Screen">Documentation on Network Settings</a>' ) . '</p>' .
	'<p>' . __( '<a href="https://wordpress.org/support/">Support</a>' ) . '</p>'
);

if ( $_POST ) {
	/** This action is documented in wp-admin/network/edit.php */
	do_action( 'wpmuadminedit' );

check_admin_referer( 'siteoptions' );

$checked_options = array(
		'menu_items'                  => array(),
		'registrationnotification'    => 'no',
		'upload_space_check_disabled' => 1,
		'add_new_users'               => 0,
	);
	foreach ( $checked_options as $option_name => $option_unchecked_value ) {
		if ( ! isset( $_POST[ $option_name ] ) ) {
			$_POST[ $option_name ] = $option_unchecked_value;
		}
	}

$options = array(
		'registrationnotification',
		'registration',
		'add_new_users',
		'menu_items',
		'upload_space_check_disabled',
		'blog_upload_space',
		'upload_filetypes',
		'site_name',
		'first_post',
		'first_page',
		'first_comment',
		'first_comment_url',
		'first_comment_author',
		'welcome_email',
		'welcome_user_email',
		'fileupload_maxk',
		'global_terms_enabled',
		'illegal_names',
		'limited_email_domains',
		'banned_email_domains',
		'WPLANG',
		'new_admin_email',
		'first_comment_email',
	);

// Handle translation installation.
	if ( ! empty( $_POST['WPLANG'] ) && current_user_can( 'install_languages' ) && wp_can_install_language_pack() ) {
		$language = wp_download_language_pack( $_POST['WPLANG'] );
		if ( $language ) {
			$_POST['WPLANG'] = $language;
		}
	}

foreach ( $options as $option_name ) {
		if ( ! isset( $_POST[ $option_name ] ) ) {
			continue;
		}
		$value = wp_unslash( $_POST[ $option_name ] );
		update_site_option( $option_name, $value );
	}

/**
	 * Fires after the network options are updated.
	 *
	 * @since MU (3.0.0)
	 */
	do_action( 'update_wpmu_options' );

wp_redirect( add_query_arg( 'updated', 'true', network_admin_url( 'settings.php' ) ) );
	exit;
}

require_once ABSPATH . 'wp-admin/admin-header.php';

if ( isset( $_GET['updated'] ) ) {
	?><div id="message" class="updated notice is-dismissible"><p><?php _e( 'Settings saved.' ); ?></p></div>
	<?php
}
?>

<tr>
				<th scope="row"><label for="admin_email"><?php _e( 'Network Admin Email' ); ?></label></th>
				<td>
					<input name="new_admin_email" type="email" id="admin_email" aria-describedby="admin-email-desc" class="regular-text" value="<?php echo esc_attr( get_site_option( 'admin_email' ) ); ?>" />
					<p class="description" id="admin-email-desc">
						<?php _e( 'This address is used for admin purposes. If you change this, we will send you an email at your new address to confirm it. <strong>The new address will not become active until confirmed.</strong>' ); ?>
					</p>
					<?php
					$new_admin_email = get_site_option( 'new_admin_email' );
					if ( $new_admin_email && get_site_option( 'admin_email' ) !== $new_admin_email ) :
						?>
						<div class="updated inline">
						<p>
						<?php
							printf(
								/* translators: %s: New network admin email. */
								__( 'There is a pending change of the network admin email to %s.' ),
								'<code>' . esc_html( $new_admin_email ) . '</code>'
							);
							printf(
								' <a href="%1$s">%2$s</a>',
								esc_url( wp_nonce_url( network_admin_url( 'settings.php?dismiss=new_network_admin_email' ), 'dismiss_new_network_admin_email' ) ),
								__( 'Cancel' )
							);
						?>
						</p>
						</div>
					<?php endif; ?>
				</td>
			</tr>
		</table>
		<h2><?php _e( 'Registration Settings' ); ?></h2>
		<table class="form-table" role="presentation">
			<tr>
				<th scope="row"><?php _e( 'Allow new registrations' ); ?></th>
				<?php
				if ( ! get_site_option( 'registration' ) ) {
					update_site_option( 'registration', 'none' );
				}
				$reg = get_site_option( 'registration' );
				?>
				<td>
					<fieldset>
					<legend class="screen-reader-text"><?php _e( 'New registrations settings' ); ?></legend>
					<label><input name="registration" type="radio" id="registration1" value="none"<?php checked( $reg, 'none' ); ?> /> <?php _e( 'Registration is disabled' ); ?></label><br />
					<label><input name="registration" type="radio" id="registration2" value="user"<?php checked( $reg, 'user' ); ?> /> <?php _e( 'User accounts may be registered' ); ?></label><br />
					<label><input name="registration" type="radio" id="registration3" value="blog"<?php checked( $reg, 'blog' ); ?> /> <?php _e( 'Logged in users may register new sites' ); ?></label><br />
					<label><input name="registration" type="radio" id="registration4" value="all"<?php checked( $reg, 'all' ); ?> /> <?php _e( 'Both sites and user accounts can be registered' ); ?></label>
					<?php
					if ( is_subdomain_install() ) {
						echo '<p class="description">';
						printf(
							/* translators: 1: NOBLOGREDIRECT, 2: wp-config.php */
							__( 'If registration is disabled, please set %1$s in %2$s to a URL you will redirect visitors to if they visit a non-existent site.' ),
							'<code>NOBLOGREDIRECT</code>',
							'<code>wp-config.php</code>'
						);
						echo '</p>';
					}
					?>
					</fieldset>
				</td>
			</tr>

<tr>
				<th scope="row"><label for="limited_email_domains"><?php _e( 'Limited Email Registrations' ); ?></label></th>
				<td>
					<?php
					$limited_email_domains = get_site_option( 'limited_email_domains' );
					$limited_email_domains = str_replace( ' ', "\n", $limited_email_domains );

if ( $limited_email_domains ) {
						$limited_email_domains = implode( "\n", (array) $limited_email_domains );
					}
					?>
					<textarea name="limited_email_domains" id="limited_email_domains" aria-describedby="limited-email-domains-desc" cols="45" rows="5">
<?php echo esc_textarea( $limited_email_domains ); ?>

/> ' ); ?>

' ); ?>

'WPLANG', 'id' => 'WPLANG', 'selected' => $lang, 'languages' => $languages, 'translations' => $translations, 'show_available_translations' => current_user_can( 'install_languages' ) && wp_can_install_language_pack(), ) ); ?>

__( 'Plugins' ) ) ); if ( $menu_items ) : ?>

	' . __( 'Enable menus' ) . ''; foreach ( (array) $menu_items as $key => $val ) { echo " ' . esc_html( $val ) . ' '; } echo ''; ?>