<?php

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/**

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* Used to set up and fix common variables and include

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* the Multisite procedural and class library.

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*

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* Allows for some configuration in wp-config.php (see ms-default-constants.php)

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*

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* @package WordPress

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* @subpackage Multisite

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* @since 3.0.0

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*/

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/**

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* Objects representing the current network and current site.

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*

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* These may be populated through a custom `sunrise.php`. If not, then this

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* file will attempt to populate them based on the current request.

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*

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* @global WP_Network $current_site The current network.

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* @global object $current_blog The current site.

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* @global string $domain Deprecated. The domain of the site found on load.

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* Use `get_site()->domain` instead.

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* @global string $path Deprecated. The path of the site found on load.

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* Use `get_site()->path` instead.

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* @global int $site_id Deprecated. The ID of the network found on load.

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* Use `get_current_network_id()` instead.

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* @global bool $public Deprecated. Whether the site found on load is public.

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* Use `get_site()->public` instead.

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*

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* @since 3.0.0

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*/

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global $current_site, $current_blog, $domain, $path, $site_id, $public;

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/** WP_Network class */

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require_once ABSPATH . WPINC . '/class-wp-network.php';

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/** WP_Site class */

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require_once ABSPATH . WPINC . '/class-wp-site.php';

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/** Multisite loader */

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require_once ABSPATH . WPINC . '/ms-load.php';

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/** Default Multisite constants */

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require_once ABSPATH . WPINC . '/ms-default-constants.php';

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if ( defined( 'SUNRISE' ) ) {

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include_once WP_CONTENT_DIR . '/sunrise.php';

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}

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/** Check for and define SUBDOMAIN_INSTALL and the deprecated VHOST constant. */

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ms_subdomain_constants();

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// This block will process a request if the current network or current site objects

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// have not been populated in the global scope through something like `sunrise.php`.

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if ( ! isset( $current_site ) || ! isset( $current_blog ) ) {

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$domain = strtolower( stripslashes( $_SERVER['HTTP_HOST'] ) );

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if ( ':80' === substr( $domain, -3 ) ) {

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$domain = substr( $domain, 0, -3 );

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$_SERVER['HTTP_HOST'] = substr( $_SERVER['HTTP_HOST'], 0, -3 );

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} elseif ( ':443' === substr( $domain, -4 ) ) {

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$domain = substr( $domain, 0, -4 );

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$_SERVER['HTTP_HOST'] = substr( $_SERVER['HTTP_HOST'], 0, -4 );

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}

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$path = stripslashes( $_SERVER['REQUEST_URI'] );

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if ( is_admin() ) {

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$path = preg_replace( '#(.*)/wp-admin/.*#', '$1/', $path );

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}

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list( $path ) = explode( '?', $path );

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$bootstrap_result = ms_load_current_site_and_network( $domain, $path, is_subdomain_install() );

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if ( true === $bootstrap_result ) {

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// `$current_blog` and `$current_site are now populated.

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} elseif ( false === $bootstrap_result ) {

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ms_not_installed( $domain, $path );

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} else {

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header( 'Location: ' . $bootstrap_result );

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exit;

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}

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unset( $bootstrap_result );

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$blog_id = $current_blog->blog_id;

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$public = $current_blog->public;

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if ( empty( $current_blog->site_id ) ) {

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// This dates to [MU134] and shouldn't be relevant anymore,

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// but it could be possible for arguments passed to insert_blog() etc.

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$current_blog->site_id = 1;

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}

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$site_id = $current_blog->site_id;

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wp_load_core_site_options( $site_id );

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}

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$wpdb->set_prefix( $table_prefix, false ); // $table_prefix can be set in sunrise.php.

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$wpdb->set_blog_id( $current_blog->blog_id, $current_blog->site_id );

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$table_prefix = $wpdb->get_blog_prefix();

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$_wp_switched_stack = array();

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$switched = false;

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// Need to init cache again after blog_id is set.

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wp_start_object_cache();

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if ( ! $current_site instanceof WP_Network ) {

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$current_site = new WP_Network( $current_site );

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}

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if ( ! $current_blog instanceof WP_Site ) {

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$current_blog = new WP_Site( $current_blog );

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}

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// Define upload directory constants.

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ms_upload_constants();

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/**

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* Fires after the current site and network have been detected and loaded

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* in multisite's bootstrap.

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*

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* @since 4.6.0

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*/

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do_action( 'ms_loaded' );

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