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WordPress/wp-includes/ms-deprecated.php
Felix Arntz 2b10923a28 Multisite: Introduce a site initialization and uninitialization API. 
This changeset makes the new CRUD API for sites introduced in [43548] usable for real-world sites. A new function `wp_initialize_site()`, which takes care of creating a site's database tables and populating them with initial values, is hooked into the site insertion process that is initiated when calling `wp_insert_site()`. Similarly, a new function `wp_uninitialize_site()`, which takes care of dropping a site's database tables, is hooked into the site deletion process that is initiated when calling `wp_delete_site()`.

A new function `wp_is_site_initialized()` completes the API, allowing to check whether a site is initialized. Since this function always makes a database request in its default behavior, it should be called with caution. Plugins that would like to use site initialization in special ways can leverage a `pre_wp_is_site_initialized` filter to alter that default behavior.

The separate handling of the site's row in the `wp_blogs` database table and the actual site setup allows for more flexibility in controlling whether or how a site's data is set up. For example, a unit test that only checks data from the site's database table row can unhook the site initialization process to improve performance. At the same time, developers consuming the new sites API only need to know about the CRUD functions, since the initialization and uninitialization processes happen internally.

With this changeset, the foundation for a sites REST API endpoint is fully available. The previously recommended functions `wpmu_create_blog()` and `wpmu_delete_blog()` now call the new respective function internally. Further follow-up work to this includes replacing calls to `wpmu_create_blog()` with `wp_insert_site()`, `update_blog_details()` with `wp_update_site()` and `wpmu_delete_blog()` with `wp_delete_blog()` throughout the codebase.

As a side-effect of this work, the `wpmu_new_blog`, `delete_blog`, and `deleted_blog` actions and the `install_blog()` function have been deprecated.

Fixes #41333. See #40364.

Built from https://develop.svn.wordpress.org/trunk@43654


git-svn-id: http://core.svn.wordpress.org/trunk@43483 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-09-24 15:09:26 +00:00

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<?php
/**
* Deprecated functions from WordPress MU and the multisite feature. You shouldn't
* use these functions and look for the alternatives instead. The functions will be
* removed in a later version.
*
* @package WordPress
* @subpackage Deprecated
* @since 3.0.0
*/
/*
* Deprecated functions come here to die.
*/
/**
* Get the "dashboard blog", the blog where users without a blog edit their profile data.
* Dashboard blog functionality was removed in WordPress 3.1, replaced by the user admin.
*
* @since MU (3.0.0)
* @deprecated 3.1.0 Use get_site()
* @see get_site()
*
* @return WP_Site Current site object.
*/
function get_dashboard_blog() {
_deprecated_function( __FUNCTION__, '3.1.0', 'get_site()' );
if ( $blog = get_site_option( 'dashboard_blog' ) ) {
return get_site( $blog );
}
return get_site( get_network()->site_id );
}
/**
* Generates a random password.
*
* @since MU (3.0.0)
* @deprecated 3.0.0 Use wp_generate_password()
* @see wp_generate_password()
*
* @param int $len Optional. The length of password to generate. Default 8.
*/
function generate_random_password( $len = 8 ) {
_deprecated_function( __FUNCTION__, '3.0.0', 'wp_generate_password()' );
return wp_generate_password( $len );
}
/**
* Determine if user is a site admin.
*
* Plugins should use is_multisite() instead of checking if this function exists
* to determine if multisite is enabled.
*
* This function must reside in a file included only if is_multisite() due to
* legacy function_exists() checks to determine if multisite is enabled.
*
* @since MU (3.0.0)
* @deprecated 3.0.0 Use is_super_admin()
* @see is_super_admin()
*
* @param string $user_login Optional. Username for the user to check. Default empty.
*/
function is_site_admin( $user_login = '' ) {
_deprecated_function( __FUNCTION__, '3.0.0', 'is_super_admin()' );
if ( empty( $user_login ) ) {
$user_id = get_current_user_id();
if ( !$user_id )
return false;
} else {
$user = get_user_by( 'login', $user_login );
if ( ! $user->exists() )
return false;
$user_id = $user->ID;
}
return is_super_admin( $user_id );
}
if ( !function_exists( 'graceful_fail' ) ) :
/**
* Deprecated functionality to gracefully fail.
*
* @since MU (3.0.0)
* @deprecated 3.0.0 Use wp_die()
* @see wp_die()
*/
function graceful_fail( $message ) {
_deprecated_function( __FUNCTION__, '3.0.0', 'wp_die()' );
$message = apply_filters( 'graceful_fail', $message );
$message_template = apply_filters( 'graceful_fail_template',
'<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Error!</title>
<style type="text/css">
img {
border: 0;
}
body {
line-height: 1.6em; font-family: Georgia, serif; width: 390px; margin: auto;
text-align: center;
}
.message {
font-size: 22px;
width: 350px;
margin: auto;
}
</style>
</head>
<body>
<p class="message">%s</p>
</body>
</html>' );
die( sprintf( $message_template, $message ) );
}
endif;
/**
* Deprecated functionality to retrieve user information.
*
* @since MU (3.0.0)
* @deprecated 3.0.0 Use get_user_by()
* @see get_user_by()
*
* @param string $username Username.
*/
function get_user_details( $username ) {
_deprecated_function( __FUNCTION__, '3.0.0', 'get_user_by()' );
return get_user_by('login', $username);
}
/**
* Deprecated functionality to clear the global post cache.
*
* @since MU (3.0.0)
* @deprecated 3.0.0 Use clean_post_cache()
* @see clean_post_cache()
*
* @param int $post_id Post ID.
*/
function clear_global_post_cache( $post_id ) {
_deprecated_function( __FUNCTION__, '3.0.0', 'clean_post_cache()' );
}
/**
* Deprecated functionality to determin if the current site is the main site.
*
* @since MU (3.0.0)
* @deprecated 3.0.0 Use is_main_site()
* @see is_main_site()
*/
function is_main_blog() {
_deprecated_function( __FUNCTION__, '3.0.0', 'is_main_site()' );
return is_main_site();
}
/**
* Deprecated functionality to validate an email address.
*
* @since MU (3.0.0)
* @deprecated 3.0.0 Use is_email()
* @see is_email()
*
* @param string $email Email address to verify.
* @param bool $check_domain Deprecated.
* @return string|bool Either false or the valid email address.
*/
function validate_email( $email, $check_domain = true) {
_deprecated_function( __FUNCTION__, '3.0.0', 'is_email()' );
return is_email( $email, $check_domain );
}
/**
* Deprecated functionality to retrieve a list of all sites.
*
* @since MU (3.0.0)
* @deprecated 3.0.0 Use wp_get_sites()
* @see wp_get_sites()
*
* @param int $start Optional. Offset for retrieving the blog list. Default 0.
* @param int $num Optional. Number of blogs to list. Default 10.
* @param string $deprecated Unused.
*/
function get_blog_list( $start = 0, $num = 10, $deprecated = '' ) {
_deprecated_function( __FUNCTION__, '3.0.0', 'wp_get_sites()' );
global $wpdb;
$blogs = $wpdb->get_results( $wpdb->prepare( "SELECT blog_id, domain, path FROM $wpdb->blogs WHERE site_id = %d AND public = '1' AND archived = '0' AND mature = '0' AND spam = '0' AND deleted = '0' ORDER BY registered DESC", get_current_network_id() ), ARRAY_A );
$blog_list = array();
foreach ( (array) $blogs as $details ) {
$blog_list[ $details['blog_id'] ] = $details;
$blog_list[ $details['blog_id'] ]['postcount'] = $wpdb->get_var( "SELECT COUNT(ID) FROM " . $wpdb->get_blog_prefix( $details['blog_id'] ). "posts WHERE post_status='publish' AND post_type='post'" );
}
if ( ! $blog_list ) {
return array();
}
if ( $num == 'all' ) {
return array_slice( $blog_list, $start, count( $blog_list ) );
} else {
return array_slice( $blog_list, $start, $num );
}
}
/**
* Deprecated functionality to retrieve a list of the most active sites.
*
* @since MU (3.0.0)
* @deprecated 3.0.0
*
* @param int $num Optional. Number of activate blogs to retrieve. Default 10.
* @param bool $display Optional. Whether or not to display the most active blogs list. Default true.
* @return array List of "most active" sites.
*/
function get_most_active_blogs( $num = 10, $display = true ) {
_deprecated_function( __FUNCTION__, '3.0.0' );
$blogs = get_blog_list( 0, 'all', false ); // $blog_id -> $details
if ( is_array( $blogs ) ) {
reset( $blogs );
$most_active = array();
$blog_list = array();
foreach ( (array) $blogs as $key => $details ) {
$most_active[ $details['blog_id'] ] = $details['postcount'];
$blog_list[ $details['blog_id'] ] = $details; // array_slice() removes keys!!
}
arsort( $most_active );
reset( $most_active );
$t = array();
foreach ( (array) $most_active as $key => $details ) {
$t[ $key ] = $blog_list[ $key ];
}
unset( $most_active );
$most_active = $t;
}
if ( $display ) {
if ( is_array( $most_active ) ) {
reset( $most_active );
foreach ( (array) $most_active as $key => $details ) {
$url = esc_url('http://' . $details['domain'] . $details['path']);
echo '<li>' . $details['postcount'] . " <a href='$url'>$url</a></li>";
}
}
}
return array_slice( $most_active, 0, $num );
}
/**
* Redirect a user based on $_GET or $_POST arguments.
*
* The function looks for redirect arguments in the following order:
* 1) $_GET['ref']
* 2) $_POST['ref']
* 3) $_SERVER['HTTP_REFERER']
* 4) $_GET['redirect']
* 5) $_POST['redirect']
* 6) $url
*
* @since MU (3.0.0)
* @deprecated 3.3.0 Use wp_redirect()
* @see wp_redirect()
*
* @param string $url Optional. Redirect URL. Default empty.
*/
function wpmu_admin_do_redirect( $url = '' ) {
_deprecated_function( __FUNCTION__, '3.3.0', 'wp_redirect()' );
$ref = '';
if ( isset( $_GET['ref'] ) )
$ref = $_GET['ref'];
if ( isset( $_POST['ref'] ) )
$ref = $_POST['ref'];
if ( $ref ) {
$ref = wpmu_admin_redirect_add_updated_param( $ref );
wp_redirect( $ref );
exit();
}
if ( ! empty( $_SERVER['HTTP_REFERER'] ) ) {
wp_redirect( $_SERVER['HTTP_REFERER'] );
exit();
}
$url = wpmu_admin_redirect_add_updated_param( $url );
if ( isset( $_GET['redirect'] ) ) {
if ( substr( $_GET['redirect'], 0, 2 ) == 's_' )
$url .= '&action=blogs&s='. esc_html( substr( $_GET['redirect'], 2 ) );
} elseif ( isset( $_POST['redirect'] ) ) {
$url = wpmu_admin_redirect_add_updated_param( $_POST['redirect'] );
}
wp_redirect( $url );
exit();
}
/**
* Adds an 'updated=true' argument to a URL.
*
* @since MU (3.0.0)
* @deprecated 3.3.0 Use add_query_arg()
* @see add_query_arg()
*
* @param string $url Optional. Redirect URL. Default empty.
* @return string
*/
function wpmu_admin_redirect_add_updated_param( $url = '' ) {
_deprecated_function( __FUNCTION__, '3.3.0', 'add_query_arg()' );
if ( strpos( $url, 'updated=true' ) === false ) {
if ( strpos( $url, '?' ) === false )
return $url . '?updated=true';
else
return $url . '&updated=true';
}
return $url;
}
/**
* Get a numeric user ID from either an email address or a login.
*
* A numeric string is considered to be an existing user ID
* and is simply returned as such.
*
* @since MU (3.0.0)
* @deprecated 3.6.0 Use get_user_by()
* @see get_user_by()
*
* @param string $string Either an email address or a login.
* @return int
*/
function get_user_id_from_string( $string ) {
_deprecated_function( __FUNCTION__, '3.6.0', 'get_user_by()' );
if ( is_email( $string ) )
$user = get_user_by( 'email', $string );
elseif ( is_numeric( $string ) )
return $string;
else
$user = get_user_by( 'login', $string );
if ( $user )
return $user->ID;
return 0;
}
/**
* Get a full blog URL, given a domain and a path.
*
* @since MU (3.0.0)
* @deprecated 3.7.0
*
* @param string $domain
* @param string $path
* @return string
*/
function get_blogaddress_by_domain( $domain, $path ) {
_deprecated_function( __FUNCTION__, '3.7.0' );
if ( is_subdomain_install() ) {
$url = "http://" . $domain.$path;
} else {
if ( $domain != $_SERVER['HTTP_HOST'] ) {
$blogname = substr( $domain, 0, strpos( $domain, '.' ) );
$url = 'http://' . substr( $domain, strpos( $domain, '.' ) + 1 ) . $path;
// we're not installing the main blog
if ( $blogname != 'www.' )
$url .= $blogname . '/';
} else { // main blog
$url = 'http://' . $domain . $path;
}
}
return esc_url_raw( $url );
}
/**
* Create an empty blog.
*
* @since MU (3.0.0)
* @deprecated 4.4.0
*
* @param string $domain The new blog's domain.
* @param string $path The new blog's path.
* @param string $weblog_title The new blog's title.
* @param int $site_id Optional. Defaults to 1.
* @return string|int The ID of the newly created blog
*/
function create_empty_blog( $domain, $path, $weblog_title, $site_id = 1 ) {
_deprecated_function( __FUNCTION__, '4.4.0' );
if ( empty($path) )
$path = '/';
// Check if the domain has been used already. We should return an error message.
if ( domain_exists($domain, $path, $site_id) )
return __( '<strong>ERROR</strong>: Site URL already taken.' );
// Need to back up wpdb table names, and create a new wp_blogs entry for new blog.
// Need to get blog_id from wp_blogs, and create new table names.
// Must restore table names at the end of function.
if ( ! $blog_id = insert_blog($domain, $path, $site_id) )
return __( '<strong>ERROR</strong>: problem creating site entry.' );
switch_to_blog($blog_id);
install_blog($blog_id);
restore_current_blog();
return $blog_id;
}
/**
* Get the admin for a domain/path combination.
*
* @since MU (3.0.0)
* @deprecated 4.4.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $domain Optional. Network domain.
* @param string $path Optional. Network path.
* @return array|false The network admins.
*/
function get_admin_users_for_domain( $domain = '', $path = '' ) {
_deprecated_function( __FUNCTION__, '4.4.0' );
global $wpdb;
if ( ! $domain ) {
$network_id = get_current_network_id();
} else {
$_networks = get_networks( array(
'fields' => 'ids',
'number' => 1,
'domain' => $domain,
'path' => $path,
) );
$network_id = ! empty( $_networks ) ? array_shift( $_networks ) : 0;
}
if ( $network_id )
return $wpdb->get_results( $wpdb->prepare( "SELECT u.ID, u.user_login, u.user_pass FROM $wpdb->users AS u, $wpdb->sitemeta AS sm WHERE sm.meta_key = 'admin_user_id' AND u.ID = sm.meta_value AND sm.site_id = %d", $network_id ), ARRAY_A );
return false;
}
/**
* Return an array of sites for a network or networks.
*
* @since 3.7.0
* @deprecated 4.6.0 Use get_sites()
* @see get_sites()
*
* @param array $args {
* Array of default arguments. Optional.
*
* @type int|array $network_id A network ID or array of network IDs. Set to null to retrieve sites
* from all networks. Defaults to current network ID.
* @type int $public Retrieve public or non-public sites. Default null, for any.
* @type int $archived Retrieve archived or non-archived sites. Default null, for any.
* @type int $mature Retrieve mature or non-mature sites. Default null, for any.
* @type int $spam Retrieve spam or non-spam sites. Default null, for any.
* @type int $deleted Retrieve deleted or non-deleted sites. Default null, for any.
* @type int $limit Number of sites to limit the query to. Default 100.
* @type int $offset Exclude the first x sites. Used in combination with the $limit parameter. Default 0.
* }
* @return array An empty array if the installation is considered "large" via wp_is_large_network(). Otherwise,
* an associative array of site data arrays, each containing the site (network) ID, blog ID,
* site domain and path, dates registered and modified, and the language ID. Also, boolean
* values for whether the site is public, archived, mature, spam, and/or deleted.
*/
function wp_get_sites( $args = array() ) {
_deprecated_function( __FUNCTION__, '4.6.0', 'get_sites()' );
if ( wp_is_large_network() )
return array();
$defaults = array(
'network_id' => get_current_network_id(),
'public' => null,
'archived' => null,
'mature' => null,
'spam' => null,
'deleted' => null,
'limit' => 100,
'offset' => 0,
);
$args = wp_parse_args( $args, $defaults );
// Backwards compatibility
if( is_array( $args['network_id'] ) ){
$args['network__in'] = $args['network_id'];
$args['network_id'] = null;
}
if( is_numeric( $args['limit'] ) ){
$args['number'] = $args['limit'];
$args['limit'] = null;
} elseif ( ! $args['limit'] ) {
$args['number'] = 0;
$args['limit'] = null;
}
// Make sure count is disabled.
$args['count'] = false;
$_sites = get_sites( $args );
$results = array();
foreach ( $_sites as $_site ) {
$_site = get_site( $_site );
$results[] = $_site->to_array();
}
return $results;
}
/**
* Check whether a usermeta key has to do with the current blog.
*
* @since MU (3.0.0)
* @deprecated 4.9.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $key
* @param int $user_id Optional. Defaults to current user.
* @param int $blog_id Optional. Defaults to current blog.
* @return bool
*/
function is_user_option_local( $key, $user_id = 0, $blog_id = 0 ) {
global $wpdb;
_deprecated_function( __FUNCTION__, '4.9.0' );
$current_user = wp_get_current_user();
if ( $blog_id == 0 ) {
$blog_id = get_current_blog_id();
}
$local_key = $wpdb->get_blog_prefix( $blog_id ) . $key;
return isset( $current_user->$local_key );
}
/**
* Store basic site info in the blogs table.
*
* This function creates a row in the wp_blogs table and returns
* the new blog's ID. It is the first step in creating a new blog.
*
* @since MU (3.0.0)
* @deprecated 5.0.0 Use `wp_insert_site()`
* @see wp_insert_site()
*
* @param string $domain The domain of the new site.
* @param string $path The path of the new site.
* @param int $site_id Unless you're running a multi-network install, be sure to set this value to 1.
* @return int|false The ID of the new row
*/
function insert_blog($domain, $path, $site_id) {
_deprecated_function( __FUNCTION__, '5.0.0', 'wp_insert_site()' );
$data = array(
'domain' => $domain,
'path' => $path,
'site_id' => $site_id,
);
$site_id = wp_insert_site( $data );
if ( is_wp_error( $site_id ) ) {
return false;
}
clean_blog_cache( $site_id );
return $site_id;
}
/**
* Install an empty blog.
*
* Creates the new blog tables and options. If calling this function
* directly, be sure to use switch_to_blog() first, so that $wpdb
* points to the new blog.
*
* @since MU (3.0.0)
* @deprecated 5.0.0
*
* @global wpdb $wpdb
* @global WP_Roles $wp_roles
*
* @param int $blog_id The value returned by wp_insert_site().
* @param string $blog_title The title of the new site.
*/
function install_blog( $blog_id, $blog_title = '' ) {
global $wpdb, $wp_roles;
_deprecated_function( __FUNCTION__, '5.0.0' );
// Cast for security
$blog_id = (int) $blog_id;
require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
$suppress = $wpdb->suppress_errors();
if ( $wpdb->get_results( "DESCRIBE {$wpdb->posts}" ) ) {
die( '<h1>' . __( 'Already Installed' ) . '</h1><p>' . __( 'You appear to have already installed WordPress. To reinstall please clear your old database tables first.' ) . '</p></body></html>' );
}
$wpdb->suppress_errors( $suppress );
$url = get_blogaddress_by_id( $blog_id );
// Set everything up
make_db_current_silent( 'blog' );
populate_options();
populate_roles();
// populate_roles() clears previous role definitions so we start over.
$wp_roles = new WP_Roles();
$siteurl = $home = untrailingslashit( $url );
if ( ! is_subdomain_install() ) {
if ( 'https' === parse_url( get_site_option( 'siteurl' ), PHP_URL_SCHEME ) ) {
$siteurl = set_url_scheme( $siteurl, 'https' );
}
if ( 'https' === parse_url( get_home_url( get_network()->site_id ), PHP_URL_SCHEME ) ) {
$home = set_url_scheme( $home, 'https' );
}
}
update_option( 'siteurl', $siteurl );
update_option( 'home', $home );
if ( get_site_option( 'ms_files_rewriting' ) ) {
update_option( 'upload_path', UPLOADBLOGSDIR . "/$blog_id/files" );
} else {
update_option( 'upload_path', get_blog_option( get_network()->site_id, 'upload_path' ) );
}
update_option( 'blogname', wp_unslash( $blog_title ) );
update_option( 'admin_email', '' );
// remove all perms
$table_prefix = $wpdb->get_blog_prefix();
delete_metadata( 'user', 0, $table_prefix . 'user_level', null, true ); // delete all
delete_metadata( 'user', 0, $table_prefix . 'capabilities', null, true ); // delete all
}
/**
* Set blog defaults.
*
* This function creates a row in the wp_blogs table.
*
* @since MU (3.0.0)
* @deprecated MU
* @deprecated Use wp_install_defaults()
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $blog_id Ignored in this function.
* @param int $user_id
*/
function install_blog_defaults( $blog_id, $user_id ) {
global $wpdb;
_deprecated_function( __FUNCTION__, 'MU' );
require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
$suppress = $wpdb->suppress_errors();
wp_install_defaults( $user_id );
$wpdb->suppress_errors( $suppress );
}
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