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<?php
/**
* Multisite WordPress API
*
* @package WordPress
* @subpackage Multisite
* @since 3.0.0
*/
/**
* Gets the network's site and user counts.
*
* @since MU (3.0.0)
*
* @return int[] {
* Site and user count for the network.
*
* @type int $blogs Number of sites on the network.
* @type int $users Number of users on the network.
* }
*/
function get_sitestats() {
$stats = array(
'blogs' => get_blog_count(),
'users' => get_user_count(),
);
return $stats;
}
/**
* Get one of a user's active blogs
*
* Returns the user's primary blog, if they have one and
* it is active. If it's inactive, function returns another
* active blog of the user. If none are found, the user
* is added as a Subscriber to the Dashboard Blog and that blog
* is returned.
*
* @since MU (3.0.0)
*
* @param int $user_id The unique ID of the user
* @return WP_Site|void The blog object
*/
function get_active_blog_for_user( $user_id ) {
$blogs = get_blogs_of_user( $user_id );
if ( empty( $blogs ) ) {
return;
}
if ( ! is_multisite() ) {
return $blogs[ get_current_blog_id() ];
}
$primary_blog = get_user_meta( $user_id, 'primary_blog', true );
$first_blog = current( $blogs );
if ( false !== $primary_blog ) {
if ( ! isset( $blogs[ $primary_blog ] ) ) {
update_user_meta( $user_id, 'primary_blog', $first_blog->userblog_id );
$primary = get_site( $first_blog->userblog_id );
} else {
$primary = get_site( $primary_blog );
}
} else {
// TODO: Review this call to add_user_to_blog too - to get here the user must have a role on this blog?
$result = add_user_to_blog( $first_blog->userblog_id, $user_id, 'subscriber' );
if ( ! is_wp_error( $result ) ) {
update_user_meta( $user_id, 'primary_blog', $first_blog->userblog_id );
$primary = $first_blog;
}
}
if ( ( ! is_object( $primary ) ) || ( 1 == $primary->archived || 1 == $primary->spam || 1 == $primary->deleted ) ) {
$blogs = get_blogs_of_user( $user_id, true ); // If a user's primary blog is shut down, check their other blogs.
$ret = false;
if ( is_array( $blogs ) && count( $blogs ) > 0 ) {
foreach ( (array) $blogs as $blog_id => $blog ) {
if ( get_current_network_id() != $blog->site_id ) {
continue;
}
$details = get_site( $blog_id );
if ( is_object( $details ) && 0 == $details->archived && 0 == $details->spam && 0 == $details->deleted ) {
$ret = $details;
if ( get_user_meta( $user_id, 'primary_blog', true ) != $blog_id ) {
update_user_meta( $user_id, 'primary_blog', $blog_id );
}
if ( ! get_user_meta( $user_id, 'source_domain', true ) ) {
update_user_meta( $user_id, 'source_domain', $details->domain );
}
break;
}
}
} else {
return;
}
return $ret;
} else {
return $primary;
}
}
/**
* The number of active users in your installation.
*
* The count is cached and updated twice daily. This is not a live count.
*
* @since MU (3.0.0)
* @since 4.8.0 The `$network_id` parameter has been added.
*
* @param int|null $network_id ID of the network. Default is the current network.
* @return int Number of active users on the network.
*/
function get_user_count( $network_id = null ) {
return get_network_option( $network_id, 'user_count' );
}
/**
* The number of active sites on your installation.
*
* The count is cached and updated twice daily. This is not a live count.
*
* @since MU (3.0.0)
* @since 3.7.0 The `$network_id` parameter has been deprecated.
* @since 4.8.0 The `$network_id` parameter is now being used.
*
* @param int|null $network_id ID of the network. Default is the current network.
* @return int Number of active sites on the network.
*/
function get_blog_count( $network_id = null ) {
return get_network_option( $network_id, 'blog_count' );
}
/**
* Gets a blog post from any site on the network.
*
* This function is similar to get_post(), except that it can retrieve a post
* from any site on the network, not just the current site.
*
* @since MU (3.0.0)
*
* @param int $blog_id ID of the blog.
* @param int $post_id ID of the post being looked for.
* @return WP_Post|null WP_Post object on success, null on failure
*/
function get_blog_post( $blog_id, $post_id ) {
switch_to_blog( $blog_id );
$post = get_post( $post_id );
restore_current_blog();
return $post;
}
/**
* Adds a user to a blog, along with specifying the user's role.
*
* Use the {@see 'add_user_to_blog'} action to fire an event when users are added to a blog.
*
* @since MU (3.0.0)
*
* @param int $blog_id ID of the blog the user is being added to.
* @param int $user_id ID of the user being added.
* @param string $role The role you want the user to have.
* @return true|WP_Error True on success or a WP_Error object if the user doesn't exist
* or could not be added.
*/
function add_user_to_blog( $blog_id, $user_id, $role ) {
switch_to_blog( $blog_id );
$user = get_userdata( $user_id );
if ( ! $user ) {
restore_current_blog();
return new WP_Error( 'user_does_not_exist', __( 'The requested user does not exist.' ) );
}
/**
* Filters whether a user should be added to a site.
*
* @since 4.9.0
*
* @param true|WP_Error $retval True if the user should be added to the site, error
* object otherwise.
* @param int $user_id User ID.
* @param string $role User role.
* @param int $blog_id Site ID.
*/
$can_add_user = apply_filters( 'can_add_user_to_blog', true, $user_id, $role, $blog_id );
if ( true !== $can_add_user ) {
restore_current_blog();
if ( is_wp_error( $can_add_user ) ) {
return $can_add_user;
}
return new WP_Error( 'user_cannot_be_added', __( 'User cannot be added to this site.' ) );
}
if ( ! get_user_meta( $user_id, 'primary_blog', true ) ) {
update_user_meta( $user_id, 'primary_blog', $blog_id );
$site = get_site( $blog_id );
update_user_meta( $user_id, 'source_domain', $site->domain );
}
$user->set_role( $role );
/**
* Fires immediately after a user is added to a site.
*
* @since MU (3.0.0)
*
* @param int $user_id User ID.
* @param string $role User role.
* @param int $blog_id Blog ID.
*/
do_action( 'add_user_to_blog', $user_id, $role, $blog_id );
clean_user_cache( $user_id );
wp_cache_delete( $blog_id . '_user_count', 'blog-details' );
restore_current_blog();
return true;
}
/**
* Remove a user from a blog.
*
* Use the {@see 'remove_user_from_blog'} action to fire an event when
* users are removed from a blog.
*
* Accepts an optional `$reassign` parameter, if you want to
* reassign the user's blog posts to another user upon removal.
*
* @since MU (3.0.0)
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $user_id ID of the user being removed.
* @param int $blog_id Optional. ID of the blog the user is being removed from. Default 0.
* @param int $reassign Optional. ID of the user to whom to reassign posts. Default 0.
* @return true|WP_Error True on success or a WP_Error object if the user doesn't exist.
*/
function remove_user_from_blog( $user_id, $blog_id = 0, $reassign = 0 ) {
global $wpdb;
switch_to_blog( $blog_id );
$user_id = (int) $user_id;
/**
* Fires before a user is removed from a site.
*
* @since MU (3.0.0)
* @since 5.4.0 Added the `$reassign` parameter.
*
* @param int $user_id ID of the user being removed.
* @param int $blog_id ID of the blog the user is being removed from.
* @param int $reassign ID of the user to whom to reassign posts.
*/
do_action( 'remove_user_from_blog', $user_id, $blog_id, $reassign );
// If being removed from the primary blog, set a new primary
// if the user is assigned to multiple blogs.
$primary_blog = get_user_meta( $user_id, 'primary_blog', true );
if ( $primary_blog == $blog_id ) {
$new_id = '';
$new_domain = '';
$blogs = get_blogs_of_user( $user_id );
foreach ( (array) $blogs as $blog ) {
if ( $blog->userblog_id == $blog_id ) {
continue;
}
$new_id = $blog->userblog_id;
$new_domain = $blog->domain;
break;
}
update_user_meta( $user_id, 'primary_blog', $new_id );
update_user_meta( $user_id, 'source_domain', $new_domain );
}
// wp_revoke_user( $user_id );
$user = get_userdata( $user_id );
if ( ! $user ) {
restore_current_blog();
return new WP_Error( 'user_does_not_exist', __( 'That user does not exist.' ) );
}
$user->remove_all_caps();
$blogs = get_blogs_of_user( $user_id );
if ( count( $blogs ) == 0 ) {
update_user_meta( $user_id, 'primary_blog', '' );
update_user_meta( $user_id, 'source_domain', '' );
}
if ( $reassign ) {
$reassign = (int) $reassign;
$post_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_author = %d", $user_id ) );
$link_ids = $wpdb->get_col( $wpdb->prepare( "SELECT link_id FROM $wpdb->links WHERE link_owner = %d", $user_id ) );
if ( ! empty( $post_ids ) ) {
$wpdb->query( $wpdb->prepare( "UPDATE $wpdb->posts SET post_author = %d WHERE post_author = %d", $reassign, $user_id ) );
array_walk( $post_ids, 'clean_post_cache' );
}
if ( ! empty( $link_ids ) ) {
$wpdb->query( $wpdb->prepare( "UPDATE $wpdb->links SET link_owner = %d WHERE link_owner = %d", $reassign, $user_id ) );
array_walk( $link_ids, 'clean_bookmark_cache' );
}
}
restore_current_blog();
return true;
}
/**
* Get the permalink for a post on another blog.
*
* @since MU (3.0.0) 1.0
*
* @param int $blog_id ID of the source blog.
* @param int $post_id ID of the desired post.
* @return string The post's permalink
*/
function get_blog_permalink( $blog_id, $post_id ) {
switch_to_blog( $blog_id );
$link = get_permalink( $post_id );
restore_current_blog();
return $link;
}
/**
* Get a blog's numeric ID from its URL.
*
* On a subdirectory installation like example.com/blog1/,
* $domain will be the root 'example.com' and $path the
* subdirectory '/blog1/'. With subdomains like blog1.example.com,
* $domain is 'blog1.example.com' and $path is '/'.
*
* @since MU (3.0.0)
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $domain
* @param string $path Optional. Not required for subdomain installations.
* @return int 0 if no blog found, otherwise the ID of the matching blog
*/
function get_blog_id_from_url( $domain, $path = '/' ) {
$domain = strtolower( $domain );
$path = strtolower( $path );
$id = wp_cache_get( md5( $domain . $path ), 'blog-id-cache' );
if ( -1 == $id ) { // Blog does not exist.
return 0;
} elseif ( $id ) {
return (int) $id;
}
$args = array(
'domain' => $domain,
'path' => $path,
'fields' => 'ids',
'number' => 1,
'update_site_meta_cache' => false,
);
$result = get_sites( $args );
$id = array_shift( $result );
if ( ! $id ) {
wp_cache_set( md5( $domain . $path ), -1, 'blog-id-cache' );
return 0;
}
wp_cache_set( md5( $domain . $path ), $id, 'blog-id-cache' );
return $id;
}
//
// Admin functions.
//
/**
* Checks an email address against a list of banned domains.
*
* This function checks against the Banned Email Domains list
* at wp-admin/network/settings.php. The check is only run on
* self-registrations; user creation at wp-admin/network/users.php
* bypasses this check.
*
* @since MU (3.0.0)
*
* @param string $user_email The email provided by the user at registration.
* @return bool True when the email address is banned, false otherwise.
*/
function is_email_address_unsafe( $user_email ) {
$banned_names = get_site_option( 'banned_email_domains' );
if ( $banned_names && ! is_array( $banned_names ) ) {
$banned_names = explode( "\n", $banned_names );
}
$is_email_address_unsafe = false;
if ( $banned_names && is_array( $banned_names ) && false !== strpos( $user_email, '@', 1 ) ) {
$banned_names = array_map( 'strtolower', $banned_names );
$normalized_email = strtolower( $user_email );
list( $email_local_part, $email_domain ) = explode( '@', $normalized_email );
foreach ( $banned_names as $banned_domain ) {
if ( ! $banned_domain ) {
continue;
}
if ( $email_domain == $banned_domain ) {
$is_email_address_unsafe = true;
break;
}
$dotted_domain = ".$banned_domain";
if ( substr( $normalized_email, -strlen( $dotted_domain ) ) === $dotted_domain ) {
$is_email_address_unsafe = true;
break;
}
}
}
/**
* Filters whether an email address is unsafe.
*
* @since 3.5.0
*
* @param bool $is_email_address_unsafe Whether the email address is "unsafe". Default false.
* @param string $user_email User email address.
*/
return apply_filters( 'is_email_address_unsafe', $is_email_address_unsafe, $user_email );
}
/**
* Sanitize and validate data required for a user sign-up.
*
* Verifies the validity and uniqueness of user names and user email addresses,
* and checks email addresses against allowed and disallowed domains provided by
* administrators.
*
* The {@see 'wpmu_validate_user_signup'} hook provides an easy way to modify the sign-up
* process. The value $result, which is passed to the hook, contains both the user-provided
* info and the error messages created by the function. {@see 'wpmu_validate_user_signup'}
* allows you to process the data in any way you'd like, and unset the relevant errors if
* necessary.
*
* @since MU (3.0.0)
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $user_name The login name provided by the user.
* @param string $user_email The email provided by the user.
* @return array {
* The array of user name, email, and the error messages.
*
* @type string $user_name Sanitized and unique username.
* @type string $orig_username Original username.
* @type string $user_email User email address.
* @type WP_Error $errors WP_Error object containing any errors found.
* }
*/
function wpmu_validate_user_signup( $user_name, $user_email ) {
global $wpdb;
$errors = new WP_Error();
$orig_username = $user_name;
$user_name = preg_replace( '/\s+/', '', sanitize_user( $user_name, true ) );
if ( $user_name != $orig_username || preg_match( '/[^a-z0-9]/', $user_name ) ) {
$errors->add( 'user_name', __( 'Usernames can only contain lowercase letters (a-z) and numbers.' ) );
$user_name = $orig_username;
}
$user_email = sanitize_email( $user_email );
if ( empty( $user_name ) ) {
$errors->add( 'user_name', __( 'Please enter a username.' ) );
}
$illegal_names = get_site_option( 'illegal_names' );
if ( ! is_array( $illegal_names ) ) {
$illegal_names = array( 'www', 'web', 'root', 'admin', 'main', 'invite', 'administrator' );
add_site_option( 'illegal_names', $illegal_names );
}
if ( in_array( $user_name, $illegal_names, true ) ) {
$errors->add( 'user_name', __( 'Sorry, that username is not allowed.' ) );
}
/** This filter is documented in wp-includes/user.php */
$illegal_logins = (array) apply_filters( 'illegal_user_logins', array() );
if ( in_array( strtolower( $user_name ), array_map( 'strtolower', $illegal_logins ), true ) ) {
$errors->add( 'user_name', __( 'Sorry, that username is not allowed.' ) );
}
if ( ! is_email( $user_email ) ) {
$errors->add( 'user_email', __( 'Please enter a valid email address.' ) );
} elseif ( is_email_address_unsafe( $user_email ) ) {
$errors->add( 'user_email', __( 'You cannot use that email address to signup. We are having problems with them blocking some of our email. Please use another email provider.' ) );
}
if ( strlen( $user_name ) < 4 ) {
$errors->add( 'user_name', __( 'Username must be at least 4 characters.' ) );
}
if ( strlen( $user_name ) > 60 ) {
$errors->add( 'user_name', __( 'Username may not be longer than 60 characters.' ) );
}
// All numeric?
if ( preg_match( '/^[0-9]*$/', $user_name ) ) {
$errors->add( 'user_name', __( 'Sorry, usernames must have letters too!' ) );
}
$limited_email_domains = get_site_option( 'limited_email_domains' );
if ( is_array( $limited_email_domains ) && ! empty( $limited_email_domains ) ) {
$limited_email_domains = array_map( 'strtolower', $limited_email_domains );
$emaildomain = strtolower( substr( $user_email, 1 + strpos( $user_email, '@' ) ) );
if ( ! in_array( $emaildomain, $limited_email_domains, true ) ) {
$errors->add( 'user_email', __( 'Sorry, that email address is not allowed!' ) );
}
}
// Check if the username has been used already.
if ( username_exists( $user_name ) ) {
$errors->add( 'user_name', __( 'Sorry, that username already exists!' ) );
}
// Check if the email address has been used already.
if ( email_exists( $user_email ) ) {
$errors->add( 'user_email', __( 'Sorry, that email address is already used!' ) );
}
// Has someone already signed up for this username?
$signup = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->signups WHERE user_login = %s", $user_name ) );
if ( $signup instanceof stdClass ) {
$registered_at = mysql2date( 'U', $signup->registered );
$now = time();
$diff = $now - $registered_at;
// If registered more than two days ago, cancel registration and let this signup go through.
if ( $diff > 2 * DAY_IN_SECONDS ) {
$wpdb->delete( $wpdb->signups, array( 'user_login' => $user_name ) );
} else {
$errors->add( 'user_name', __( 'That username is currently reserved but may be available in a couple of days.' ) );
}
}
$signup = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->signups WHERE user_email = %s", $user_email ) );
if ( $signup instanceof stdClass ) {
$diff = time() - mysql2date( 'U', $signup->registered );
// If registered more than two days ago, cancel registration and let this signup go through.
if ( $diff > 2 * DAY_IN_SECONDS ) {
$wpdb->delete( $wpdb->signups, array( 'user_email' => $user_email ) );
} else {
$errors->add( 'user_email', __( 'That email address has already been used. Please check your inbox for an activation email. It will become available in a couple of days if you do nothing.' ) );
}
}
$result = array(
'user_name' => $user_name,
'orig_username' => $orig_username,
'user_email' => $user_email,
'errors' => $errors,
);
/**
* Filters the validated user registration details.
*
* This does not allow you to override the username or email of the user during
* registration. The values are solely used for validation and error handling.
*
* @since MU (3.0.0)
*
* @param array $result {
* The array of user name, email, and the error messages.
*
* @type string $user_name Sanitized and unique username.
* @type string $orig_username Original username.
* @type string $user_email User email address.
* @type WP_Error $errors WP_Error object containing any errors found.
* }
*/
return apply_filters( 'wpmu_validate_user_signup', $result );
}
/**
* Processes new site registrations.
*
* Checks the data provided by the user during blog signup. Verifies
* the validity and uniqueness of blog paths and domains.
*
* This function prevents the current user from registering a new site
* with a blogname equivalent to another user's login name. Passing the
* $user parameter to the function, where $user is the other user, is
* effectively an override of this limitation.
*
* Filter {@see 'wpmu_validate_blog_signup'} if you want to modify
* the way that WordPress validates new site signups.
*
* @since MU (3.0.0)
*
* @global wpdb $wpdb WordPress database abstraction object.
* @global string $domain
*
* @param string $blogname The blog name provided by the user. Must be unique.
* @param string $blog_title The blog title provided by the user.
* @param WP_User|string $user Optional. The user object to check against the new site name.
* @return array {
* Array of domain, path, blog name, blog title, user and error messages.
*
* @type string $domain Domain for the site.
* @type string $path Path for the site. Used in subdirectory installations.
* @type string $blogname The unique site name (slug).
* @type string $blog_title Blog title.
* @type string|WP_User $user By default, an empty string. A user object if provided.
* @type WP_Error $errors WP_Error containing any errors found.
* }
*/
function wpmu_validate_blog_signup( $blogname, $blog_title, $user = '' ) {
global $wpdb, $domain;
$current_network = get_network();
$base = $current_network->path;
$blog_title = strip_tags( $blog_title );
$errors = new WP_Error();
$illegal_names = get_site_option( 'illegal_names' );
if ( false == $illegal_names ) {
$illegal_names = array( 'www', 'web', 'root', 'admin', 'main', 'invite', 'administrator' );
add_site_option( 'illegal_names', $illegal_names );
}
/*
* On sub dir installations, some names are so illegal, only a filter can
* spring them from jail.
*/
if ( ! is_subdomain_install() ) {
$illegal_names = array_merge( $illegal_names, get_subdirectory_reserved_names() );
}
if ( empty( $blogname ) ) {
$errors->add( 'blogname', __( 'Please enter a site name.' ) );
}
if ( preg_match( '/[^a-z0-9]+/', $blogname ) ) {
$errors->add( 'blogname', __( 'Site names can only contain lowercase letters (a-z) and numbers.' ) );
}
if ( in_array( $blogname, $illegal_names, true ) ) {
$errors->add( 'blogname', __( 'That name is not allowed.' ) );
}
/**
* Filters the minimum site name length required when validating a site signup.
*
* @since 4.8.0
*
* @param int $length The minimum site name length. Default 4.
*/
$minimum_site_name_length = apply_filters( 'minimum_site_name_length', 4 );
if ( strlen( $blogname ) < $minimum_site_name_length ) {
/* translators: %s: Minimum site name length. */
$errors->add( 'blogname', sprintf( _n( 'Site name must be at least %s character.', 'Site name must be at least %s characters.', $minimum_site_name_length ), number_format_i18n( $minimum_site_name_length ) ) );
}
// Do not allow users to create a blog that conflicts with a page on the main blog.
if ( ! is_subdomain_install() && $wpdb->get_var( $wpdb->prepare( 'SELECT post_name FROM ' . $wpdb->get_blog_prefix( $current_network->site_id ) . "posts WHERE post_type = 'page' AND post_name = %s", $blogname ) ) ) {
$errors->add( 'blogname', __( 'Sorry, you may not use that site name.' ) );
}
// All numeric?
if ( preg_match( '/^[0-9]*$/', $blogname ) ) {
$errors->add( 'blogname', __( 'Sorry, site names must have letters too!' ) );
}
/**
* Filters the new site name during registration.
*
* The name is the site's subdomain or the site's subdirectory
* path depending on the network settings.
*
* @since MU (3.0.0)
*
* @param string $blogname Site name.
*/
$blogname = apply_filters( 'newblogname', $blogname );
$blog_title = wp_unslash( $blog_title );
if ( empty( $blog_title ) ) {
$errors->add( 'blog_title', __( 'Please enter a site title.' ) );
}
// Check if the domain/path has been used already.
if ( is_subdomain_install() ) {
$mydomain = $blogname . '.' . preg_replace( '|^www\.|', '', $domain );
$path = $base;
} else {
$mydomain = $domain;
$path = $base . $blogname . '/';
}
if ( domain_exists( $mydomain, $path, $current_network->id ) ) {
$errors->add( 'blogname', __( 'Sorry, that site already exists!' ) );
}
if ( username_exists( $blogname ) ) {
if ( ! is_object( $user ) || ( is_object( $user ) && ( $user->user_login != $blogname ) ) ) {
$errors->add( 'blogname', __( 'Sorry, that site is reserved!' ) );
}
}
// Has someone already signed up for this domain?
// TODO: Check email too?
$signup = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->signups WHERE domain = %s AND path = %s", $mydomain, $path ) );
if ( $signup instanceof stdClass ) {
$diff = time() - mysql2date( 'U', $signup->registered );
// If registered more than two days ago, cancel registration and let this signup go through.
if ( $diff > 2 * DAY_IN_SECONDS ) {
$wpdb->delete(
$wpdb->signups,
array(
'domain' => $mydomain,
'path' => $path,
)
);
} else {
$errors->add( 'blogname', __( 'That site is currently reserved but may be available in a couple days.' ) );
}
}
$result = array(
'domain' => $mydomain,
'path' => $path,
'blogname' => $blogname,
'blog_title' => $blog_title,
'user' => $user,
'errors' => $errors,
);
/**
* Filters site details and error messages following registration.
*
* @since MU (3.0.0)
*
* @param array $result {
* Array of domain, path, blog name, blog title, user and error messages.
*
* @type string $domain Domain for the site.
* @type string $path Path for the site. Used in subdirectory installations.
* @type string $blogname The unique site name (slug).
* @type string $blog_title Blog title.
* @type string|WP_User $user By default, an empty string. A user object if provided.
* @type WP_Error $errors WP_Error containing any errors found.
* }
*/
return apply_filters( 'wpmu_validate_blog_signup', $result );
}
/**
* Record site signup information for future activation.
*
* @since MU (3.0.0)
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $domain The requested domain.
* @param string $path The requested path.
* @param string $title The requested site title.
* @param string $user The user's requested login name.
* @param string $user_email The user's email address.
* @param array $meta Optional. Signup meta data. By default, contains the requested privacy setting and lang_id.
*/
function wpmu_signup_blog( $domain, $path, $title, $user, $user_email, $meta = array() ) {
global $wpdb;
$key = substr( md5( time() . wp_rand() . $domain ), 0, 16 );
/**
* Filters the metadata for a site signup.
*
* The metadata will be serialized prior to storing it in the database.
*
* @since 4.8.0
*
* @param array $meta Signup meta data. Default empty array.
* @param string $domain The requested domain.
* @param string $path The requested path.
* @param string $title The requested site title.
* @param string $user The user's requested login name.
* @param string $user_email The user's email address.
* @param string $key The user's activation key.
*/
$meta = apply_filters( 'signup_site_meta', $meta, $domain, $path, $title, $user, $user_email, $key );
$wpdb->insert(
$wpdb->signups,
array(
'domain' => $domain,
'path' => $path,
'title' => $title,
'user_login' => $user,
'user_email' => $user_email,
'registered' => current_time( 'mysql', true ),
'activation_key' => $key,
'meta' => serialize( $meta ),
)
);
/**
* Fires after site signup information has been written to the database.
*
* @since 4.4.0
*
* @param string $domain The requested domain.
* @param string $path The requested path.
* @param string $title The requested site title.
* @param string $user The user's requested login name.
* @param string $user_email The user's email address.
* @param string $key The user's activation key.
* @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id.
*/
do_action( 'after_signup_site', $domain, $path, $title, $user, $user_email, $key, $meta );
}
/**
* Record user signup information for future activation.
*
* This function is used when user registration is open but
* new site registration is not.
*
* @since MU (3.0.0)
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $user The user's requested login name.
* @param string $user_email The user's email address.
* @param array $meta Optional. Signup meta data. Default empty array.
*/
function wpmu_signup_user( $user, $user_email, $meta = array() ) {
global $wpdb;
// Format data.
$user = preg_replace( '/\s+/', '', sanitize_user( $user, true ) );
$user_email = sanitize_email( $user_email );
$key = substr( md5( time() . wp_rand() . $user_email ), 0, 16 );
/**
* Filters the metadata for a user signup.
*
* The metadata will be serialized prior to storing it in the database.
*
* @since 4.8.0
*
* @param array $meta Signup meta data. Default empty array.
* @param string $user The user's requested login name.
* @param string $user_email The user's email address.
* @param string $key The user's activation key.
*/
$meta = apply_filters( 'signup_user_meta', $meta, $user, $user_email, $key );
$wpdb->insert(
$wpdb->signups,
array(
'domain' => '',
'path' => '',
'title' => '',
'user_login' => $user,
'user_email' => $user_email,
'registered' => current_time( 'mysql', true ),
'activation_key' => $key,
'meta' => serialize( $meta ),
)
);
/**
* Fires after a user's signup information has been written to the database.
*
* @since 4.4.0
*
* @param string $user The user's requested login name.
* @param string $user_email The user's email address.
* @param string $key The user's activation key.
* @param array $meta Signup meta data. Default empty array.
*/
do_action( 'after_signup_user', $user, $user_email, $key, $meta );
}
/**
* Send a confirmation request email to a user when they sign up for a new site. The new site will not become active
* until the confirmation link is clicked.
*
* This is the notification function used when site registration
* is enabled.
*
* Filter {@see 'wpmu_signup_blog_notification'} to bypass this function or
* replace it with your own notification behavior.
*
* Filter {@see 'wpmu_signup_blog_notification_email'} and
* {@see 'wpmu_signup_blog_notification_subject'} to change the content
* and subject line of the email sent to newly registered users.
*
* @since MU (3.0.0)
*
* @param string $domain The new blog domain.
* @param string $path The new blog path.
* @param string $title The site title.
* @param string $user_login The user's login name.
* @param string $user_email The user's email address.
* @param string $key The activation key created in wpmu_signup_blog()
* @param array $meta Optional. Signup meta data. By default, contains the requested privacy setting and lang_id.
* @return bool
*/
function wpmu_signup_blog_notification( $domain, $path, $title, $user_login, $user_email, $key, $meta = array() ) {
/**
* Filters whether to bypass the new site email notification.
*
* @since MU (3.0.0)
*
* @param string|false $domain Site domain, or false to prevent the email from sending.
* @param string $path Site path.
* @param string $title Site title.
* @param string $user_login User login name.
* @param string $user_email User email address.
* @param string $key Activation key created in wpmu_signup_blog().
* @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id.
*/
if ( ! apply_filters( 'wpmu_signup_blog_notification', $domain, $path, $title, $user_login, $user_email, $key, $meta ) ) {
return false;
}
// Send email with activation link.
if ( ! is_subdomain_install() || get_current_network_id() != 1 ) {
$activate_url = network_site_url( "wp-activate.php?key=$key" );
} else {
$activate_url = "http://{$domain}{$path}wp-activate.php?key=$key"; // @todo Use *_url() API.
}
$activate_url = esc_url( $activate_url );
$admin_email = get_site_option( 'admin_email' );
if ( '' === $admin_email ) {
$admin_email = 'support@' . wp_parse_url( network_home_url(), PHP_URL_HOST );
}
$from_name = ( '' !== get_site_option( 'site_name' ) ) ? esc_html( get_site_option( 'site_name' ) ) : 'WordPress';
$message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . 'Content-Type: text/plain; charset="' . get_option( 'blog_charset' ) . "\"\n";
$user = get_user_by( 'login', $user_login );
$switched_locale = switch_to_locale( get_user_locale( $user ) );
$message = sprintf(
/**
* Filters the message content of the new blog notification email.
*
* Content should be formatted for transmission via wp_mail().
*
* @since MU (3.0.0)
*
* @param string $content Content of the notification email.
* @param string $domain Site domain.
* @param string $path Site path.
* @param string $title Site title.
* @param string $user_login User login name.
* @param string $user_email User email address.
* @param string $key Activation key created in wpmu_signup_blog().
* @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id.
*/
apply_filters(
'wpmu_signup_blog_notification_email',
/* translators: New site notification email. 1: Activation URL, 2: New site URL. */
__( "To activate your blog, please click the following link:\n\n%1\$s\n\nAfter you activate, you will receive *another email* with your login.\n\nAfter you activate, you can visit your site here:\n\n%2\$s" ),
$domain,
$path,
$title,
$user_login,
$user_email,
$key,
$meta
),
$activate_url,
esc_url( "http://{$domain}{$path}" ),
$key
);
$subject = sprintf(
/**
* Filters the subject of the new blog notification email.
*
* @since MU (3.0.0)
*
* @param string $subject Subject of the notification email.
* @param string $domain Site domain.
* @param string $path Site path.
* @param string $title Site title.
* @param string $user_login User login name.
* @param string $user_email User email address.
* @param string $key Activation key created in wpmu_signup_blog().
* @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id.
*/
apply_filters(
'wpmu_signup_blog_notification_subject',
/* translators: New site notification email subject. 1: Network title, 2: New site URL. */
_x( '[%1$s] Activate %2$s', 'New site notification email subject' ),
$domain,
$path,
$title,
$user_login,
$user_email,
$key,
$meta
),
$from_name,
esc_url( 'http://' . $domain . $path )
);
wp_mail( $user_email, wp_specialchars_decode( $subject ), $message, $message_headers );
if ( $switched_locale ) {
restore_previous_locale();
}
return true;
}
/**
* Send a confirmation request email to a user when they sign up for a new user account (without signing up for a site
* at the same time). The user account will not become active until the confirmation link is clicked.
*
* This is the notification function used when no new site has
* been requested.
*
* Filter {@see 'wpmu_signup_user_notification'} to bypass this function or
* replace it with your own notification behavior.
*
* Filter {@see 'wpmu_signup_user_notification_email'} and
* {@see 'wpmu_signup_user_notification_subject'} to change the content
* and subject line of the email sent to newly registered users.
*
* @since MU (3.0.0)
*
* @param string $user_login The user's login name.
* @param string $user_email The user's email address.
* @param string $key The activation key created in wpmu_signup_user()
* @param array $meta Optional. Signup meta data. Default empty array.
* @return bool
*/
function wpmu_signup_user_notification( $user_login, $user_email, $key, $meta = array() ) {
/**
* Filters whether to bypass the email notification for new user sign-up.
*
* @since MU (3.0.0)
*
* @param string $user_login User login name.
* @param string $user_email User email address.
* @param string $key Activation key created in wpmu_signup_user().
* @param array $meta Signup meta data. Default empty array.
*/
if ( ! apply_filters( 'wpmu_signup_user_notification', $user_login, $user_email, $key, $meta ) ) {
return false;
}
$user = get_user_by( 'login', $user_login );
$switched_locale = switch_to_locale( get_user_locale( $user ) );
// Send email with activation link.
$admin_email = get_site_option( 'admin_email' );
if ( '' === $admin_email ) {
$admin_email = 'support@' . wp_parse_url( network_home_url(), PHP_URL_HOST );
}
$from_name = ( '' !== get_site_option( 'site_name' ) ) ? esc_html( get_site_option( 'site_name' ) ) : 'WordPress';
$message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . 'Content-Type: text/plain; charset="' . get_option( 'blog_charset' ) . "\"\n";
$message = sprintf(
/**
* Filters the content of the notification email for new user sign-up.
*
* Content should be formatted for transmission via wp_mail().
*
* @since MU (3.0.0)
*
* @param string $content Content of the notification email.
* @param string $user_login User login name.
* @param string $user_email User email address.
* @param string $key Activation key created in wpmu_signup_user().
* @param array $meta Signup meta data. Default empty array.
*/
apply_filters(
'wpmu_signup_user_notification_email',
/* translators: New user notification email. %s: Activation URL. */
__( "To activate your user, please click the following link:\n\n%s\n\nAfter you activate, you will receive *another email* with your login." ),
$user_login,
$user_email,
$key,
$meta
),
site_url( "wp-activate.php?key=$key" )
);
$subject = sprintf(
/**
* Filters the subject of the notification email of new user signup.
*
* @since MU (3.0.0)
*
* @param string $subject Subject of the notification email.
* @param string $user_login User login name.
* @param string $user_email User email address.
* @param string $key Activation key created in wpmu_signup_user().
* @param array $meta Signup meta data. Default empty array.
*/
apply_filters(
'wpmu_signup_user_notification_subject',
/* translators: New user notification email subject. 1: Network title, 2: New user login. */
_x( '[%1$s] Activate %2$s', 'New user notification email subject' ),
$user_login,
$user_email,
$key,
$meta
),
$from_name,
$user_login
);
wp_mail( $user_email, wp_specialchars_decode( $subject ), $message, $message_headers );
if ( $switched_locale ) {
restore_previous_locale();
}
return true;
}
/**
* Activate a signup.
*
* Hook to {@see 'wpmu_activate_user'} or {@see 'wpmu_activate_blog'} for events
* that should happen only when users or sites are self-created (since
* those actions are not called when users and sites are created
* by a Super Admin).
*
* @since MU (3.0.0)
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $key The activation key provided to the user.
* @return array|WP_Error An array containing information about the activated user and/or blog
*/
function wpmu_activate_signup( $key ) {
global $wpdb;
$signup = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->signups WHERE activation_key = %s", $key ) );
if ( empty( $signup ) ) {
return new WP_Error( 'invalid_key', __( 'Invalid activation key.' ) );
}
if ( $signup->active ) {
if ( empty( $signup->domain ) ) {
return new WP_Error( 'already_active', __( 'The user is already active.' ), $signup );
} else {
return new WP_Error( 'already_active', __( 'The site is already active.' ), $signup );
}
}
$meta = maybe_unserialize( $signup->meta );
$password = wp_generate_password( 12, false );
$user_id = username_exists( $signup->user_login );
if ( ! $user_id ) {
$user_id = wpmu_create_user( $signup->user_login, $password, $signup->user_email );
} else {
$user_already_exists = true;
}
if ( ! $user_id ) {
return new WP_Error( 'create_user', __( 'Could not create user' ), $signup );
}
$now = current_time( 'mysql', true );
if ( empty( $signup->domain ) ) {
$wpdb->update(
$wpdb->signups,
array(
'active' => 1,
'activated' => $now,
),
array( 'activation_key' => $key )
);
if ( isset( $user_already_exists ) ) {
return new WP_Error( 'user_already_exists', __( 'That username is already activated.' ), $signup );
}
/**
* Fires immediately after a new user is activated.
*
* @since MU (3.0.0)
*
* @param int $user_id User ID.
* @param string $password User password.
* @param array $meta Signup meta data.
*/
do_action( 'wpmu_activate_user', $user_id, $password, $meta );
return array(
'user_id' => $user_id,
'password' => $password,
'meta' => $meta,
);
}
$blog_id = wpmu_create_blog( $signup->domain, $signup->path, $signup->title, $user_id, $meta, get_current_network_id() );
// TODO: What to do if we create a user but cannot create a blog?
if ( is_wp_error( $blog_id ) ) {
/*
* If blog is taken, that means a previous attempt to activate this blog
* failed in between creating the blog and setting the activation flag.
* Let's just set the active flag and instruct the user to reset their password.
*/
if ( 'blog_taken' === $blog_id->get_error_code() ) {
$blog_id->add_data( $signup );
$wpdb->update(
$wpdb->signups,
array(
'active' => 1,
'activated' => $now,
),
array( 'activation_key' => $key )
);
}
return $blog_id;
}
$wpdb->update(
$wpdb->signups,
array(
'active' => 1,
'activated' => $now,
),
array( 'activation_key' => $key )
);
/**
* Fires immediately after a site is activated.
*
* @since MU (3.0.0)
*
* @param int $blog_id Blog ID.
* @param int $user_id User ID.
* @param int $password User password.
* @param string $signup_title Site title.
* @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id.
*/
do_action( 'wpmu_activate_blog', $blog_id, $user_id, $password, $signup->title, $meta );
return array(
'blog_id' => $blog_id,
'user_id' => $user_id,
'password' => $password,
'title' => $signup->title,
'meta' => $meta,
);
}
/**
* Deletes am associated signup entry when a user is deleted from the database.
*
* @since 5.5.0
*
* @param int $id ID of the user to delete.
* @param int|null $reassign ID of the user to reassign posts and links to.
* @param WP_User $user User object.
*/
function wp_delete_signup_on_user_delete( $id, $reassign, $user ) {
global $wpdb;
$wpdb->delete( $wpdb->signups, array( 'user_login' => $user->user_login ) );
}
/**
* Create a user.
*
* This function runs when a user self-registers as well as when
* a Super Admin creates a new user. Hook to {@see 'wpmu_new_user'} for events
* that should affect all new users, but only on Multisite (otherwise
* use {@see'user_register'}).
*
* @since MU (3.0.0)
*
* @param string $user_name The new user's login name.
* @param string $password The new user's password.
* @param string $email The new user's email address.
* @return int|false Returns false on failure, or int $user_id on success
*/
function wpmu_create_user( $user_name, $password, $email ) {
$user_name = preg_replace( '/\s+/', '', sanitize_user( $user_name, true ) );
$user_id = wp_create_user( $user_name, $password, $email );
if ( is_wp_error( $user_id ) ) {
return false;
}
// Newly created users have no roles or caps until they are added to a blog.
delete_user_option( $user_id, 'capabilities' );
delete_user_option( $user_id, 'user_level' );
/**
* Fires immediately after a new user is created.
*
* @since MU (3.0.0)
*
* @param int $user_id User ID.
*/
do_action( 'wpmu_new_user', $user_id );
return $user_id;
}
/**
* Create a site.
*
* This function runs when a user self-registers a new site as well
* as when a Super Admin creates a new site. Hook to {@see 'wpmu_new_blog'}
* for events that should affect all new sites.
*
* On subdirectory installations, $domain is the same as the main site's
* domain, and the path is the subdirectory name (eg 'example.com'
* and '/blog1/'). On subdomain installations, $domain is the new subdomain +
* root domain (eg 'blog1.example.com'), and $path is '/'.
*
* @since MU (3.0.0)
*
* @param string $domain The new site's domain.
* @param string $path The new site's path.
* @param string $title The new site's title.
* @param int $user_id The user ID of the new site's admin.
* @param array $options Optional. Array of key=>value pairs used to set initial site options.
* If valid status keys are included ('public', 'archived', 'mature',
* 'spam', 'deleted', or 'lang_id') the given site status(es) will be
* updated. Otherwise, keys and values will be used to set options for
* the new site. Default empty array.
* @param int $network_id Optional. Network ID. Only relevant on multi-network installations.
* @return int|WP_Error Returns WP_Error object on failure, the new site ID on success.
*/
function wpmu_create_blog( $domain, $path, $title, $user_id, $options = array(), $network_id = 1 ) {
$defaults = array(
'public' => 0,
);
$options = wp_parse_args( $options, $defaults );
$title = strip_tags( $title );
$user_id = (int) $user_id;
// Check if the domain has been used already. We should return an error message.
if ( domain_exists( $domain, $path, $network_id ) ) {
return new WP_Error( 'blog_taken', __( 'Sorry, that site already exists!' ) );
}
if ( ! wp_installing() ) {
wp_installing( true );
}
$allowed_data_fields = array( 'public', 'archived', 'mature', 'spam', 'deleted', 'lang_id' );
$site_data = array_merge(
array(
'domain' => $domain,
'path' => $path,
'network_id' => $network_id,
),
array_intersect_key( $options, array_flip( $allowed_data_fields ) )
);
// Data to pass to wp_initialize_site().
$site_initialization_data = array(
'title' => $title,
'user_id' => $user_id,
'options' => array_diff_key( $options, array_flip( $allowed_data_fields ) ),
);
$blog_id = wp_insert_site( array_merge( $site_data, $site_initialization_data ) );
if ( is_wp_error( $blog_id ) ) {
return $blog_id;
}
wp_cache_set( 'last_changed', microtime(), 'sites' );
return $blog_id;
}
/**
* Notifies the network admin that a new site has been activated.
*
* Filter {@see 'newblog_notify_siteadmin'} to change the content of
* the notification email.
*
* @since MU (3.0.0)
* @since 5.1.0 $blog_id now supports input from the {@see 'wp_initialize_site'} action.
*
* @param WP_Site|int $blog_id The new site's object or ID.
* @param string $deprecated Not used.
* @return bool
*/
function newblog_notify_siteadmin( $blog_id, $deprecated = '' ) {
if ( is_object( $blog_id ) ) {
$blog_id = $blog_id->blog_id;
}
if ( 'yes' !== get_site_option( 'registrationnotification' ) ) {
return false;
}
$email = get_site_option( 'admin_email' );
if ( is_email( $email ) == false ) {
return false;
}
$options_site_url = esc_url( network_admin_url( 'settings.php' ) );
switch_to_blog( $blog_id );
$blogname = get_option( 'blogname' );
$siteurl = site_url();
restore_current_blog();
$msg = sprintf(
/* translators: New site notification email. 1: Site URL, 2: User IP address, 3: URL to Network Settings screen. */
__(
'New Site: %1$s
URL: %2$s
Remote IP address: %3$s
Disable these notifications: %4$s'
),
$blogname,
$siteurl,
wp_unslash( $_SERVER['REMOTE_ADDR'] ),
$options_site_url
);
/**
* Filters the message body of the new site activation email sent
* to the network administrator.
*
* @since MU (3.0.0)
* @since 5.4.0 The `$blog_id` parameter was added.
*
* @param string $msg Email body.
* @param int $blog_id The new site's ID.
*/
$msg = apply_filters( 'newblog_notify_siteadmin', $msg, $blog_id );
/* translators: New site notification email subject. %s: New site URL. */
wp_mail( $email, sprintf( __( 'New Site Registration: %s' ), $siteurl ), $msg );
return true;
}
/**
* Notifies the network admin that a new user has been activated.
*
* Filter {@see 'newuser_notify_siteadmin'} to change the content of
* the notification email.
*
* @since MU (3.0.0)
*
* @param int $user_id The new user's ID.
* @return bool
*/
function newuser_notify_siteadmin( $user_id ) {
if ( 'yes' !== get_site_option( 'registrationnotification' ) ) {
return false;
}
$email = get_site_option( 'admin_email' );
if ( is_email( $email ) == false ) {
return false;
}
$user = get_userdata( $user_id );
$options_site_url = esc_url( network_admin_url( 'settings.php' ) );
$msg = sprintf(
/* translators: New user notification email. 1: User login, 2: User IP address, 3: URL to Network Settings screen. */
__(
'New User: %1$s
Remote IP address: %2$s
Disable these notifications: %3$s'
),
$user->user_login,
wp_unslash( $_SERVER['REMOTE_ADDR'] ),
$options_site_url
);
/**
* Filters the message body of the new user activation email sent
* to the network administrator.
*
* @since MU (3.0.0)
*
* @param string $msg Email body.
* @param WP_User $user WP_User instance of the new user.
*/
$msg = apply_filters( 'newuser_notify_siteadmin', $msg, $user );
/* translators: New user notification email subject. %s: User login. */
wp_mail( $email, sprintf( __( 'New User Registration: %s' ), $user->user_login ), $msg );
return true;
}
/**
* Checks whether a site name is already taken.
*
* The name is the site's subdomain or the site's subdirectory
* path depending on the network settings.
*
* Used during the new site registration process to ensure
* that each site name is unique.
*
* @since MU (3.0.0)
*
* @param string $domain The domain to be checked.
* @param string $path The path to be checked.
* @param int $network_id Optional. Network ID. Relevant only on multi-network installations.
* @return int|null The site ID if the site name exists, null otherwise.
*/
function domain_exists( $domain, $path, $network_id = 1 ) {
$path = trailingslashit( $path );
$args = array(
'network_id' => $network_id,
'domain' => $domain,
'path' => $path,
'fields' => 'ids',
'number' => 1,
'update_site_meta_cache' => false,
);
$result = get_sites( $args );
$result = array_shift( $result );
/**
* Filters whether a site name is taken.
*
* The name is the site's subdomain or the site's subdirectory
* path depending on the network settings.
*
* @since 3.5.0
*
* @param int|null $result The site ID if the site name exists, null otherwise.
* @param string $domain Domain to be checked.
* @param string $path Path to be checked.
* @param int $network_id Network ID. Relevant only on multi-network installations.
*/
return apply_filters( 'domain_exists', $result, $domain, $path, $network_id );
}
/**
* Notifies the site administrator that their site activation was successful.
*
* Filter {@see 'wpmu_welcome_notification'} to disable or bypass.
*
* Filter {@see 'update_welcome_email'} and {@see 'update_welcome_subject'} to
* modify the content and subject line of the notification email.
*
* @since MU (3.0.0)
*
* @param int $blog_id Site ID.
* @param int $user_id User ID.
* @param string $password User password, or "N/A" if the user account is not new.
* @param string $title Site title.
* @param array $meta Optional. Signup meta data. By default, contains the requested privacy setting and lang_id.
* @return bool Whether the email notification was sent.
*/
function wpmu_welcome_notification( $blog_id, $user_id, $password, $title, $meta = array() ) {
$current_network = get_network();
/**
* Filters whether to bypass the welcome email sent to the site administrator after site activation.
*
* Returning false disables the welcome email.
*
* @since MU (3.0.0)
*
* @param int|false $blog_id Site ID, or false to prevent the email from sending.
* @param int $user_id User ID of the site administrator.
* @param string $password User password, or "N/A" if the user account is not new.
* @param string $title Site title.
* @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id.
*/
if ( ! apply_filters( 'wpmu_welcome_notification', $blog_id, $user_id, $password, $title, $meta ) ) {
return false;
}
$user = get_userdata( $user_id );
$switched_locale = switch_to_locale( get_user_locale( $user ) );
$welcome_email = get_site_option( 'welcome_email' );
if ( false == $welcome_email ) {
/* translators: Do not translate USERNAME, SITE_NAME, BLOG_URL, PASSWORD: those are placeholders. */
$welcome_email = __(
'Howdy USERNAME,
Your new SITE_NAME site has been successfully set up at:
BLOG_URL
You can log in to the administrator account with the following information:
Username: USERNAME
Password: PASSWORD
Log in here: BLOG_URLwp-login.php
We hope you enjoy your new site. Thanks!
--The Team @ SITE_NAME'
);
}
$url = get_blogaddress_by_id( $blog_id );
$welcome_email = str_replace( 'SITE_NAME', $current_network->site_name, $welcome_email );
$welcome_email = str_replace( 'BLOG_TITLE', $title, $welcome_email );
$welcome_email = str_replace( 'BLOG_URL', $url, $welcome_email );
$welcome_email = str_replace( 'USERNAME', $user->user_login, $welcome_email );
$welcome_email = str_replace( 'PASSWORD', $password, $welcome_email );
/**
* Filters the content of the welcome email sent to the site administrator after site activation.
*
* Content should be formatted for transmission via wp_mail().
*
* @since MU (3.0.0)
*
* @param string $welcome_email Message body of the email.
* @param int $blog_id Site ID.
* @param int $user_id User ID of the site administrator.
* @param string $password User password, or "N/A" if the user account is not new.
* @param string $title Site title.
* @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id.
*/
$welcome_email = apply_filters( 'update_welcome_email', $welcome_email, $blog_id, $user_id, $password, $title, $meta );
$admin_email = get_site_option( 'admin_email' );
if ( '' === $admin_email ) {
$admin_email = 'support@' . wp_parse_url( network_home_url(), PHP_URL_HOST );
}
$from_name = ( '' !== get_site_option( 'site_name' ) ) ? esc_html( get_site_option( 'site_name' ) ) : 'WordPress';
$message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . 'Content-Type: text/plain; charset="' . get_option( 'blog_charset' ) . "\"\n";
$message = $welcome_email;
if ( empty( $current_network->site_name ) ) {
$current_network->site_name = 'WordPress';
}
/* translators: New site notification email subject. 1: Network title, 2: New site title. */
$subject = __( 'New %1$s Site: %2$s' );
/**
* Filters the subject of the welcome email sent to the site administrator after site activation.
*
* @since MU (3.0.0)
*
* @param string $subject Subject of the email.
*/
$subject = apply_filters( 'update_welcome_subject', sprintf( $subject, $current_network->site_name, wp_unslash( $title ) ) );
wp_mail( $user->user_email, wp_specialchars_decode( $subject ), $message, $message_headers );
if ( $switched_locale ) {
restore_previous_locale();
}
return true;
}
/**
* Notifies the Multisite network administrator that a new site was created.
*
* Filter {@see 'send_new_site_email'} to disable or bypass.
*
* Filter {@see 'new_site_email'} to filter the contents.
*
* @since 5.6.0
*
* @param int $site_id Site ID of the new site.
* @param int $user_id User ID of the administrator of the new site.
* @return bool Whether the email notification was sent.
*/
function wpmu_new_site_admin_notification( $site_id, $user_id ) {
$site = get_site( $site_id );
$user = get_userdata( $user_id );
$email = get_site_option( 'admin_email' );
if ( ! $site || ! $user || ! $email ) {
return false;
}
/**
* Filters whether to send an email to the Multisite network administrator when a new site is created.
*
* Return false to disable sending the email.
*
* @since 5.6.0
*
* @param bool $send Whether to send the email.
* @param WP_Site $site Site object of the new site.
* @param WP_User $user User object of the administrator of the new site.
*/
if ( ! apply_filters( 'send_new_site_email', true, $site, $user ) ) {
return false;
}
$switched_locale = false;
$network_admin = get_user_by( 'email', $email );
if ( $network_admin ) {
// If the network admin email address corresponds to a user, switch to their locale.
$switched_locale = switch_to_locale( get_user_locale( $network_admin ) );
} else {
// Otherwise switch to the locale of the current site.
$switched_locale = switch_to_locale( get_locale() );
}
$subject = sprintf(
/* translators: New site notification email subject. %s: Network title. */
__( '[%s] New Site Created' ),
get_network()->site_name
);
$message = sprintf(
/* translators: New site notification email. 1: User login, 2: Site URL, 3: Site title. */
__(
'New site created by %1$s
Address: %2$s
Name: %3$s'
),
$user->user_login,
get_site_url( $site->id ),
get_blog_option( $site->id, 'blogname' )
);
$header = sprintf(
'From: "%1$s" <%2$s>',
_x( 'Site Admin', 'email "From" field' ),
$email
);
$new_site_email = array(
'to' => $email,
'subject' => $subject,
'message' => $message,
'headers' => $header,
);
/**
* Filters the content of the email sent to the Multisite network administrator when a new site is created.
*
* Content should be formatted for transmission via wp_mail().
*
* @since 5.6.0
*
* @param array $new_site_email {
* Used to build wp_mail().
*
* @type string $to The email address of the recipient.
* @type string $subject The subject of the email.
* @type string $message The content of the email.
* @type string $headers Headers.
* }
* @param WP_Site $site Site object of the new site.
* @param WP_User $user User object of the administrator of the new site.
*/
$new_site_email = apply_filters( 'new_site_email', $new_site_email, $site, $user );
wp_mail(
$new_site_email['to'],
wp_specialchars_decode( $new_site_email['subject'] ),
$new_site_email['message'],
$new_site_email['headers']
);
if ( $switched_locale ) {
restore_previous_locale();
}
return true;
}
/**
* Notify a user that their account activation has been successful.
*
* Filter {@see 'wpmu_welcome_user_notification'} to disable or bypass.
*
* Filter {@see 'update_welcome_user_email'} and {@see 'update_welcome_user_subject'} to
* modify the content and subject line of the notification email.
*
* @since MU (3.0.0)
*
* @param int $user_id User ID.
* @param string $password User password.
* @param array $meta Optional. Signup meta data. Default empty array.
* @return bool
*/
function wpmu_welcome_user_notification( $user_id, $password, $meta = array() ) {
$current_network = get_network();
/**
* Filters whether to bypass the welcome email after user activation.
*
* Returning false disables the welcome email.
*
* @since MU (3.0.0)
*
* @param int $user_id User ID.
* @param string $password User password.
* @param array $meta Signup meta data. Default empty array.
*/
if ( ! apply_filters( 'wpmu_welcome_user_notification', $user_id, $password, $meta ) ) {
return false;
}
$welcome_email = get_site_option( 'welcome_user_email' );
$user = get_userdata( $user_id );
$switched_locale = switch_to_locale( get_user_locale( $user ) );
/**
* Filters the content of the welcome email after user activation.
*
* Content should be formatted for transmission via wp_mail().
*
* @since MU (3.0.0)
*
* @param string $welcome_email The message body of the account activation success email.
* @param int $user_id User ID.
* @param string $password User password.
* @param array $meta Signup meta data. Default empty array.
*/
$welcome_email = apply_filters( 'update_welcome_user_email', $welcome_email, $user_id, $password, $meta );
$welcome_email = str_replace( 'SITE_NAME', $current_network->site_name, $welcome_email );
$welcome_email = str_replace( 'USERNAME', $user->user_login, $welcome_email );
$welcome_email = str_replace( 'PASSWORD', $password, $welcome_email );
$welcome_email = str_replace( 'LOGINLINK', wp_login_url(), $welcome_email );
$admin_email = get_site_option( 'admin_email' );
if ( '' === $admin_email ) {
$admin_email = 'support@' . wp_parse_url( network_home_url(), PHP_URL_HOST );
}
$from_name = ( '' !== get_site_option( 'site_name' ) ) ? esc_html( get_site_option( 'site_name' ) ) : 'WordPress';
$message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . 'Content-Type: text/plain; charset="' . get_option( 'blog_charset' ) . "\"\n";
$message = $welcome_email;
if ( empty( $current_network->site_name ) ) {
$current_network->site_name = 'WordPress';
}
/* translators: New user notification email subject. 1: Network title, 2: New user login. */
$subject = __( 'New %1$s User: %2$s' );
/**
* Filters the subject of the welcome email after user activation.
*
* @since MU (3.0.0)
*
* @param string $subject Subject of the email.
*/
$subject = apply_filters( 'update_welcome_user_subject', sprintf( $subject, $current_network->site_name, $user->user_login ) );
wp_mail( $user->user_email, wp_specialchars_decode( $subject ), $message, $message_headers );
if ( $switched_locale ) {
restore_previous_locale();
}
return true;
}
/**
* Get the current network.
*
* Returns an object containing the 'id', 'domain', 'path', and 'site_name'
* properties of the network being viewed.
*
* @see wpmu_current_site()
*
* @since MU (3.0.0)
*
* @global WP_Network $current_site
*
* @return WP_Network
*/
function get_current_site() {
global $current_site;
return $current_site;
}
/**
* Get a user's most recent post.
*
* Walks through each of a user's blogs to find the post with
* the most recent post_date_gmt.
*
* @since MU (3.0.0)
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $user_id
* @return array Contains the blog_id, post_id, post_date_gmt, and post_gmt_ts
*/
function get_most_recent_post_of_user( $user_id ) {
global $wpdb;
$user_blogs = get_blogs_of_user( (int) $user_id );
$most_recent_post = array();
// Walk through each blog and get the most recent post
// published by $user_id.
foreach ( (array) $user_blogs as $blog ) {
$prefix = $wpdb->get_blog_prefix( $blog->userblog_id );
$recent_post = $wpdb->get_row( $wpdb->prepare( "SELECT ID, post_date_gmt FROM {$prefix}posts WHERE post_author = %d AND post_type = 'post' AND post_status = 'publish' ORDER BY post_date_gmt DESC LIMIT 1", $user_id ), ARRAY_A );
// Make sure we found a post.
if ( isset( $recent_post['ID'] ) ) {
$post_gmt_ts = strtotime( $recent_post['post_date_gmt'] );
/*
* If this is the first post checked
* or if this post is newer than the current recent post,
* make it the new most recent post.
*/
if ( ! isset( $most_recent_post['post_gmt_ts'] ) || ( $post_gmt_ts > $most_recent_post['post_gmt_ts'] ) ) {
$most_recent_post = array(
'blog_id' => $blog->userblog_id,
'post_id' => $recent_post['ID'],
'post_date_gmt' => $recent_post['post_date_gmt'],
'post_gmt_ts' => $post_gmt_ts,
);
}
}
}
return $most_recent_post;
}
//
// Misc functions.
//
/**
* Check an array of MIME types against a list of allowed types.
*
* WordPress ships with a set of allowed upload filetypes,
* which is defined in wp-includes/functions.php in
* get_allowed_mime_types(). This function is used to filter
* that list against the filetypes allowed provided by Multisite
* Super Admins at wp-admin/network/settings.php.
*
* @since MU (3.0.0)
*
* @param array $mimes
* @return array
*/
function check_upload_mimes( $mimes ) {
$site_exts = explode( ' ', get_site_option( 'upload_filetypes', 'jpg jpeg png gif' ) );
$site_mimes = array();
foreach ( $site_exts as $ext ) {
foreach ( $mimes as $ext_pattern => $mime ) {
if ( '' !== $ext && false !== strpos( $ext_pattern, $ext ) ) {
$site_mimes[ $ext_pattern ] = $mime;
}
}
}
return $site_mimes;
}
/**
* Update a blog's post count.
*
* WordPress MS stores a blog's post count as an option so as
* to avoid extraneous COUNTs when a blog's details are fetched
* with get_site(). This function is called when posts are published
* or unpublished to make sure the count stays current.
*
* @since MU (3.0.0)
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $deprecated Not used.
*/
function update_posts_count( $deprecated = '' ) {
global $wpdb;
update_option( 'post_count', (int) $wpdb->get_var( "SELECT COUNT(ID) FROM {$wpdb->posts} WHERE post_status = 'publish' and post_type = 'post'" ) );
}
/**
* Logs the user email, IP, and registration date of a new site.
*
* @since MU (3.0.0)
* @since 5.1.0 Parameters now support input from the {@see 'wp_initialize_site'} action.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param WP_Site|int $blog_id The new site's object or ID.
* @param int|array $user_id User ID, or array of arguments including 'user_id'.
*/
function wpmu_log_new_registrations( $blog_id, $user_id ) {
global $wpdb;
if ( is_object( $blog_id ) ) {
$blog_id = $blog_id->blog_id;
}
if ( is_array( $user_id ) ) {
$user_id = ! empty( $user_id['user_id'] ) ? $user_id['user_id'] : 0;
}
$user = get_userdata( (int) $user_id );
if ( $user ) {
$wpdb->insert(
$wpdb->registration_log,
array(
'email' => $user->user_email,
'IP' => preg_replace( '/[^0-9., ]/', '', wp_unslash( $_SERVER['REMOTE_ADDR'] ) ),
'blog_id' => $blog_id,
'date_registered' => current_time( 'mysql' ),
)
);
}
}
/**
* Maintains a canonical list of terms by syncing terms created for each blog with the global terms table.
*
* @since 3.0.0
*
* @see term_id_filter
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $term_id An ID for a term on the current blog.
* @param string $deprecated Not used.
* @return int An ID from the global terms table mapped from $term_id.
*/
function global_terms( $term_id, $deprecated = '' ) {
global $wpdb;
static $global_terms_recurse = null;
if ( ! global_terms_enabled() ) {
return $term_id;
}
// Prevent a race condition.
$recurse_start = false;
if ( null === $global_terms_recurse ) {
$recurse_start = true;
$global_terms_recurse = 1;
} elseif ( 10 < $global_terms_recurse++ ) {
return $term_id;
}
$term_id = (int) $term_id;
$c = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->terms WHERE term_id = %d", $term_id ) );
$global_id = $wpdb->get_var( $wpdb->prepare( "SELECT cat_ID FROM $wpdb->sitecategories WHERE category_nicename = %s", $c->slug ) );
if ( null == $global_id ) {
$used_global_id = $wpdb->get_var( $wpdb->prepare( "SELECT cat_ID FROM $wpdb->sitecategories WHERE cat_ID = %d", $c->term_id ) );
if ( null == $used_global_id ) {
$wpdb->insert(
$wpdb->sitecategories,
array(
'cat_ID' => $term_id,
'cat_name' => $c->name,
'category_nicename' => $c->slug,
)
);
$global_id = $wpdb->insert_id;
if ( empty( $global_id ) ) {
return $term_id;
}
} else {
$max_global_id = $wpdb->get_var( "SELECT MAX(cat_ID) FROM $wpdb->sitecategories" );
$max_local_id = $wpdb->get_var( "SELECT MAX(term_id) FROM $wpdb->terms" );
$new_global_id = max( $max_global_id, $max_local_id ) + mt_rand( 100, 400 );
$wpdb->insert(
$wpdb->sitecategories,
array(
'cat_ID' => $new_global_id,
'cat_name' => $c->name,
'category_nicename' => $c->slug,
)
);
$global_id = $wpdb->insert_id;
}
} elseif ( $global_id != $term_id ) {
$local_id = $wpdb->get_var( $wpdb->prepare( "SELECT term_id FROM $wpdb->terms WHERE term_id = %d", $global_id ) );
if ( null != $local_id ) {
global_terms( $local_id );
if ( 10 < $global_terms_recurse ) {
$global_id = $term_id;
}
}
}
if ( $global_id != $term_id ) {
if ( get_option( 'default_category' ) == $term_id ) {
update_option( 'default_category', $global_id );
}
$wpdb->update( $wpdb->terms, array( 'term_id' => $global_id ), array( 'term_id' => $term_id ) );
$wpdb->update( $wpdb->term_taxonomy, array( 'term_id' => $global_id ), array( 'term_id' => $term_id ) );
$wpdb->update( $wpdb->term_taxonomy, array( 'parent' => $global_id ), array( 'parent' => $term_id ) );
clean_term_cache( $term_id );
}
if ( $recurse_start ) {
$global_terms_recurse = null;
}
return $global_id;
}
/**
* Ensure that the current site's domain is listed in the allowed redirect host list.
*
* @see wp_validate_redirect()
* @since MU (3.0.0)
*
* @param array|string $deprecated Not used.
* @return string[] {
* An array containing the current site's domain.
*
* @type string $0 The current site's domain.
* }
*/
function redirect_this_site( $deprecated = '' ) {
return array( get_network()->domain );
}
/**
* Check whether an upload is too big.
*
* @since MU (3.0.0)
*
* @blessed
*
* @param array $upload
* @return string|array If the upload is under the size limit, $upload is returned. Otherwise returns an error message.
*/
function upload_is_file_too_big( $upload ) {
if ( ! is_array( $upload ) || defined( 'WP_IMPORTING' ) || get_site_option( 'upload_space_check_disabled' ) ) {
return $upload;
}
if ( strlen( $upload['bits'] ) > ( KB_IN_BYTES * get_site_option( 'fileupload_maxk', 1500 ) ) ) {
/* translators: %s: Maximum allowed file size in kilobytes. */
return sprintf( __( 'This file is too big. Files must be less than %s KB in size.' ) . '<br />', get_site_option( 'fileupload_maxk', 1500 ) );
}
return $upload;
}
/**
* Add a nonce field to the signup page.
*
* @since MU (3.0.0)
*/
function signup_nonce_fields() {
$id = mt_rand();
echo "<input type='hidden' name='signup_form_id' value='{$id}' />";
wp_nonce_field( 'signup_form_' . $id, '_signup_form', false );
}
/**
* Process the signup nonce created in signup_nonce_fields().
*
* @since MU (3.0.0)
*
* @param array $result
* @return array
*/
function signup_nonce_check( $result ) {
if ( ! strpos( $_SERVER['PHP_SELF'], 'wp-signup.php' ) ) {
return $result;
}
if ( ! wp_verify_nonce( $_POST['_signup_form'], 'signup_form_' . $_POST['signup_form_id'] ) ) {
$result['errors']->add( 'invalid_nonce', __( 'Unable to submit this form, please try again.' ) );
}
return $result;
}
/**
* Correct 404 redirects when NOBLOGREDIRECT is defined.
*
* @since MU (3.0.0)
*/
function maybe_redirect_404() {
if ( is_main_site() && is_404() && defined( 'NOBLOGREDIRECT' ) ) {
/**
* Filters the redirect URL for 404s on the main site.
*
* The filter is only evaluated if the NOBLOGREDIRECT constant is defined.
*
* @since 3.0.0
*
* @param string $no_blog_redirect The redirect URL defined in NOBLOGREDIRECT.
*/
$destination = apply_filters( 'blog_redirect_404', NOBLOGREDIRECT );
if ( $destination ) {
if ( '%siteurl%' === $destination ) {
$destination = network_home_url();
}
wp_redirect( $destination );
exit;
}
}
}
/**
* Add a new user to a blog by visiting /newbloguser/{key}/.
*
* This will only work when the user's details are saved as an option
* keyed as 'new_user_{key}', where '{key}' is a hash generated for the user to be
* added, as when a user is invited through the regular WP Add User interface.
*
* @since MU (3.0.0)
*/
function maybe_add_existing_user_to_blog() {
if ( false === strpos( $_SERVER['REQUEST_URI'], '/newbloguser/' ) ) {
return;
}
$parts = explode( '/', $_SERVER['REQUEST_URI'] );
$key = array_pop( $parts );
if ( '' === $key ) {
$key = array_pop( $parts );
}
$details = get_option( 'new_user_' . $key );
if ( ! empty( $details ) ) {
delete_option( 'new_user_' . $key );
}
if ( empty( $details ) || is_wp_error( add_existing_user_to_blog( $details ) ) ) {
wp_die(
sprintf(
/* translators: %s: Home URL. */
__( 'An error occurred adding you to this site. Go to the <a href="%s">homepage</a>.' ),
home_url()
)
);
}
wp_die(
sprintf(
/* translators: 1: Home URL, 2: Admin URL. */
__( 'You have been added to this site. Please visit the <a href="%1$s">homepage</a> or <a href="%2$s">log in</a> using your username and password.' ),
home_url(),
admin_url()
),
__( 'WordPress › Success' ),
array( 'response' => 200 )
);
}
/**
* Add a user to a blog based on details from maybe_add_existing_user_to_blog().
*
* @since MU (3.0.0)
*
* @param array|false $details {
* User details. Must at least contain values for the keys listed below.
*
* @type int $user_id The ID of the user being added to the current blog.
* @type string $role The role to be assigned to the user.
* }
* @return true|WP_Error|void True on success or a WP_Error object if the user doesn't exist
* or could not be added. Void if $details array was not provided.
*/
function add_existing_user_to_blog( $details = false ) {
if ( is_array( $details ) ) {
$blog_id = get_current_blog_id();
$result = add_user_to_blog( $blog_id, $details['user_id'], $details['role'] );
/**
* Fires immediately after an existing user is added to a site.
*
* @since MU (3.0.0)
*
* @param int $user_id User ID.
* @param true|WP_Error $result True on success or a WP_Error object if the user doesn't exist
* or could not be added.
*/
do_action( 'added_existing_user', $details['user_id'], $result );
return $result;
}
}
/**
* Adds a newly created user to the appropriate blog
*
* To add a user in general, use add_user_to_blog(). This function
* is specifically hooked into the {@see 'wpmu_activate_user'} action.
*
* @since MU (3.0.0)
*
* @see add_user_to_blog()
*
* @param int $user_id User ID.
* @param string $password User password. Ignored.
* @param array $meta Signup meta data.
*/
function add_new_user_to_blog( $user_id, $password, $meta ) {
if ( ! empty( $meta['add_to_blog'] ) ) {
$blog_id = $meta['add_to_blog'];
$role = $meta['new_role'];
remove_user_from_blog( $user_id, get_network()->site_id ); // Remove user from main blog.
$result = add_user_to_blog( $blog_id, $user_id, $role );
if ( ! is_wp_error( $result ) ) {
update_user_meta( $user_id, 'primary_blog', $blog_id );
}
}
}
/**
* Correct From host on outgoing mail to match the site domain
*
* @since MU (3.0.0)
*
* @param PHPMailer $phpmailer The PHPMailer instance (passed by reference).
*/
function fix_phpmailer_messageid( $phpmailer ) {
$phpmailer->Hostname = get_network()->domain;
}
/**
* Check to see whether a user is marked as a spammer, based on user login.
*
* @since MU (3.0.0)
*
* @param string|WP_User $user Optional. Defaults to current user. WP_User object,
* or user login name as a string.
* @return bool
*/
function is_user_spammy( $user = null ) {
if ( ! ( $user instanceof WP_User ) ) {
if ( $user ) {
$user = get_user_by( 'login', $user );
} else {
$user = wp_get_current_user();
}
}
return $user && isset( $user->spam ) && 1 == $user->spam;
}
/**
* Update this blog's 'public' setting in the global blogs table.
*
* Public blogs have a setting of 1, private blogs are 0.
*
* @since MU (3.0.0)
*
* @param int $old_value
* @param int $value The new public value
*/
function update_blog_public( $old_value, $value ) {
update_blog_status( get_current_blog_id(), 'public', (int) $value );
}
/**
* Check whether users can self-register, based on Network settings.
*
* @since MU (3.0.0)
*
* @return bool
*/
function users_can_register_signup_filter() {
$registration = get_site_option( 'registration' );
return ( 'all' === $registration || 'user' === $registration );
}
/**
* Ensure that the welcome message is not empty. Currently unused.
*
* @since MU (3.0.0)
*
* @param string $text
* @return string
*/
function welcome_user_msg_filter( $text ) {
if ( ! $text ) {
remove_filter( 'site_option_welcome_user_email', 'welcome_user_msg_filter' );
/* translators: Do not translate USERNAME, PASSWORD, LOGINLINK, SITE_NAME: those are placeholders. */
$text = __(
'Howdy USERNAME,
Your new account is set up.
You can log in with the following information:
Username: USERNAME
Password: PASSWORD
LOGINLINK
Thanks!
--The Team @ SITE_NAME'
);
update_site_option( 'welcome_user_email', $text );
}
return $text;
}
/**
* Whether to force SSL on content.
*
* @since 2.8.5
*
* @param bool $force
* @return bool True if forced, false if not forced.
*/
function force_ssl_content( $force = '' ) {
static $forced_content = false;
if ( ! $force ) {
$old_forced = $forced_content;
$forced_content = $force;
return $old_forced;
}
return $forced_content;
}
/**
* Formats a URL to use https.
*
* Useful as a filter.
*
* @since 2.8.5
*
* @param string $url URL
* @return string URL with https as the scheme
*/
function filter_SSL( $url ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
if ( ! is_string( $url ) ) {
return get_bloginfo( 'url' ); // Return home blog URL with proper scheme.
}
if ( force_ssl_content() && is_ssl() ) {
$url = set_url_scheme( $url, 'https' );
}
return $url;
}
/**
* Schedule update of the network-wide counts for the current network.
*
* @since 3.1.0
*/
function wp_schedule_update_network_counts() {
if ( ! is_main_site() ) {
return;
}
if ( ! wp_next_scheduled( 'update_network_counts' ) && ! wp_installing() ) {
wp_schedule_event( time(), 'twicedaily', 'update_network_counts' );
}
}
/**
* Update the network-wide counts for the current network.
*
* @since 3.1.0
* @since 4.8.0 The `$network_id` parameter has been added.
*
* @param int|null $network_id ID of the network. Default is the current network.
*/
function wp_update_network_counts( $network_id = null ) {
wp_update_network_user_counts( $network_id );
wp_update_network_site_counts( $network_id );
}
/**
* Update the count of sites for the current network.
*
* If enabled through the {@see 'enable_live_network_counts'} filter, update the sites count
* on a network when a site is created or its status is updated.
*
* @since 3.7.0
* @since 4.8.0 The `$network_id` parameter has been added.
*
* @param int|null $network_id ID of the network. Default is the current network.
*/
function wp_maybe_update_network_site_counts( $network_id = null ) {
$is_small_network = ! wp_is_large_network( 'sites', $network_id );
/**
* Filters whether to update network site or user counts when a new site is created.
*
* @since 3.7.0
*
* @see wp_is_large_network()
*
* @param bool $small_network Whether the network is considered small.
* @param string $context Context. Either 'users' or 'sites'.
*/
if ( ! apply_filters( 'enable_live_network_counts', $is_small_network, 'sites' ) ) {
return;
}
wp_update_network_site_counts( $network_id );
}
/**
* Update the network-wide users count.
*
* If enabled through the {@see 'enable_live_network_counts'} filter, update the users count
* on a network when a user is created or its status is updated.
*
* @since 3.7.0
* @since 4.8.0 The `$network_id` parameter has been added.
*
* @param int|null $network_id ID of the network. Default is the current network.
*/
function wp_maybe_update_network_user_counts( $network_id = null ) {
$is_small_network = ! wp_is_large_network( 'users', $network_id );
/** This filter is documented in wp-includes/ms-functions.php */
if ( ! apply_filters( 'enable_live_network_counts', $is_small_network, 'users' ) ) {
return;
}
wp_update_network_user_counts( $network_id );
}
/**
* Update the network-wide site count.
*
* @since 3.7.0
* @since 4.8.0 The `$network_id` parameter has been added.
*
* @param int|null $network_id ID of the network. Default is the current network.
*/
function wp_update_network_site_counts( $network_id = null ) {
$network_id = (int) $network_id;
if ( ! $network_id ) {
$network_id = get_current_network_id();
}
$count = get_sites(
array(
'network_id' => $network_id,
'spam' => 0,
'deleted' => 0,
'archived' => 0,
'count' => true,
'update_site_meta_cache' => false,
)
);
update_network_option( $network_id, 'blog_count', $count );
}
/**
* Update the network-wide user count.
*
* @since 3.7.0
* @since 4.8.0 The `$network_id` parameter has been added.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int|null $network_id ID of the network. Default is the current network.
*/
function wp_update_network_user_counts( $network_id = null ) {
global $wpdb;
$count = $wpdb->get_var( "SELECT COUNT(ID) as c FROM $wpdb->users WHERE spam = '0' AND deleted = '0'" );
update_network_option( $network_id, 'user_count', $count );
}
/**
* Returns the space used by the current site.
*
* @since 3.5.0
*
* @return int Used space in megabytes.
*/
function get_space_used() {
/**
* Filters the amount of storage space used by the current site, in megabytes.
*
* @since 3.5.0
*
* @param int|false $space_used The amount of used space, in megabytes. Default false.
*/
$space_used = apply_filters( 'pre_get_space_used', false );
if ( false === $space_used ) {
$upload_dir = wp_upload_dir();
$space_used = get_dirsize( $upload_dir['basedir'] ) / MB_IN_BYTES;
}
return $space_used;
}
/**
* Returns the upload quota for the current blog.
*
* @since MU (3.0.0)
*
* @return int Quota in megabytes
*/
function get_space_allowed() {
$space_allowed = get_option( 'blog_upload_space' );
if ( ! is_numeric( $space_allowed ) ) {
$space_allowed = get_site_option( 'blog_upload_space' );
}
if ( ! is_numeric( $space_allowed ) ) {
$space_allowed = 100;
}
/**
* Filters the upload quota for the current site.
*
* @since 3.7.0
*
* @param int $space_allowed Upload quota in megabytes for the current blog.
*/
return apply_filters( 'get_space_allowed', $space_allowed );
}
/**
* Determines if there is any upload space left in the current blog's quota.
*
* @since 3.0.0
*
* @return int of upload space available in bytes
*/
function get_upload_space_available() {
$allowed = get_space_allowed();
if ( $allowed < 0 ) {
$allowed = 0;
}
$space_allowed = $allowed * MB_IN_BYTES;
if ( get_site_option( 'upload_space_check_disabled' ) ) {
return $space_allowed;
}
$space_used = get_space_used() * MB_IN_BYTES;
if ( ( $space_allowed - $space_used ) <= 0 ) {
return 0;
}
return $space_allowed - $space_used;
}
/**
* Determines if there is any upload space left in the current blog's quota.
*
* @since 3.0.0
* @return bool True if space is available, false otherwise.
*/
function is_upload_space_available() {
if ( get_site_option( 'upload_space_check_disabled' ) ) {
return true;
}
return (bool) get_upload_space_available();
}
/**
* Filters the maximum upload file size allowed, in bytes.
*
* @since 3.0.0
*
* @param int $size Upload size limit in bytes.
* @return int Upload size limit in bytes.
*/
function upload_size_limit_filter( $size ) {
$fileupload_maxk = KB_IN_BYTES * get_site_option( 'fileupload_maxk', 1500 );
if ( get_site_option( 'upload_space_check_disabled' ) ) {
return min( $size, $fileupload_maxk );
}
return min( $size, $fileupload_maxk, get_upload_space_available() );
}
/**
* Whether or not we have a large network.
*
* The default criteria for a large network is either more than 10,000 users or more than 10,000 sites.
* Plugins can alter this criteria using the {@see 'wp_is_large_network'} filter.
*
* @since 3.3.0
* @since 4.8.0 The `$network_id` parameter has been added.
*
* @param string $using 'sites or 'users'. Default is 'sites'.
* @param int|null $network_id ID of the network. Default is the current network.
* @return bool True if the network meets the criteria for large. False otherwise.
*/
function wp_is_large_network( $using = 'sites', $network_id = null ) {
$network_id = (int) $network_id;
if ( ! $network_id ) {
$network_id = get_current_network_id();
}
if ( 'users' === $using ) {
$count = get_user_count( $network_id );
/**
* Filters whether the network is considered large.
*
* @since 3.3.0
* @since 4.8.0 The `$network_id` parameter has been added.
*
* @param bool $is_large_network Whether the network has more than 10000 users or sites.
* @param string $component The component to count. Accepts 'users', or 'sites'.
* @param int $count The count of items for the component.
* @param int $network_id The ID of the network being checked.
*/
return apply_filters( 'wp_is_large_network', $count > 10000, 'users', $count, $network_id );
}
$count = get_blog_count( $network_id );
/** This filter is documented in wp-includes/ms-functions.php */
return apply_filters( 'wp_is_large_network', $count > 10000, 'sites', $count, $network_id );
}
/**
* Retrieves a list of reserved site on a sub-directory Multisite installation.
*
* @since 4.4.0
*
* @return string[] Array of reserved names.
*/
function get_subdirectory_reserved_names() {
$names = array(
'page',
'comments',
'blog',
'files',
'feed',
'wp-admin',
'wp-content',
'wp-includes',
'wp-json',
'embed',
);
/**
* Filters reserved site names on a sub-directory Multisite installation.
*
* @since 3.0.0
* @since 4.4.0 'wp-admin', 'wp-content', 'wp-includes', 'wp-json', and 'embed' were added
* to the reserved names list.
*
* @param string[] $subdirectory_reserved_names Array of reserved names.
*/
return apply_filters( 'subdirectory_reserved_names', $names );
}
/**
* Send a confirmation request email when a change of network admin email address is attempted.
*
* The new network admin address will not become active until confirmed.
*
* @since 4.9.0
*
* @param string $old_value The old network admin email address.
* @param string $value The proposed new network admin email address.
*/
function update_network_option_new_admin_email( $old_value, $value ) {
if ( get_site_option( 'admin_email' ) === $value || ! is_email( $value ) ) {
return;
}
$hash = md5( $value . time() . mt_rand() );
$new_admin_email = array(
'hash' => $hash,
'newemail' => $value,
);
update_site_option( 'network_admin_hash', $new_admin_email );
$switched_locale = switch_to_locale( get_user_locale() );
/* translators: Do not translate USERNAME, ADMIN_URL, EMAIL, SITENAME, SITEURL: those are placeholders. */
$email_text = __(
'Howdy ###USERNAME###,
You recently requested to have the network admin email address on
your network changed.
If this is correct, please click on the following link to change it:
###ADMIN_URL###
You can safely ignore and delete this email if you do not want to
take this action.
This email has been sent to ###EMAIL###
Regards,
All at ###SITENAME###
###SITEURL###'
);
/**
* Filters the text of the email sent when a change of network admin email address is attempted.
*
* The following strings have a special meaning and will get replaced dynamically:
* ###USERNAME### The current user's username.
* ###ADMIN_URL### The link to click on to confirm the email change.
* ###EMAIL### The proposed new network admin email address.
* ###SITENAME### The name of the network.
* ###SITEURL### The URL to the network.
*
* @since 4.9.0
*
* @param string $email_text Text in the email.
* @param array $new_admin_email {
* Data relating to the new network admin email address.
*
* @type string $hash The secure hash used in the confirmation link URL.
* @type string $newemail The proposed new network admin email address.
* }
*/
$content = apply_filters( 'new_network_admin_email_content', $email_text, $new_admin_email );
$current_user = wp_get_current_user();
$content = str_replace( '###USERNAME###', $current_user->user_login, $content );
$content = str_replace( '###ADMIN_URL###', esc_url( network_admin_url( 'settings.php?network_admin_hash=' . $hash ) ), $content );
$content = str_replace( '###EMAIL###', $value, $content );
$content = str_replace( '###SITENAME###', wp_specialchars_decode( get_site_option( 'site_name' ), ENT_QUOTES ), $content );
$content = str_replace( '###SITEURL###', network_home_url(), $content );
wp_mail(
$value,
sprintf(
/* translators: Email change notification email subject. %s: Network title. */
__( '[%s] Network Admin Email Change Request' ),
wp_specialchars_decode( get_site_option( 'site_name' ), ENT_QUOTES )
),
$content
);
if ( $switched_locale ) {
restore_previous_locale();
}
}
/**
* Send an email to the old network admin email address when the network admin email address changes.
*
* @since 4.9.0
*
* @param string $option_name The relevant database option name.
* @param string $new_email The new network admin email address.
* @param string $old_email The old network admin email address.
* @param int $network_id ID of the network.
*/
function wp_network_admin_email_change_notification( $option_name, $new_email, $old_email, $network_id ) {
$send = true;
// Don't send the notification to the default 'admin_email' value.
if ( 'you@example.com' === $old_email ) {
$send = false;
}
/**
* Filters whether to send the network admin email change notification email.
*
* @since 4.9.0
*
* @param bool $send Whether to send the email notification.
* @param string $old_email The old network admin email address.
* @param string $new_email The new network admin email address.
* @param int $network_id ID of the network.
*/
$send = apply_filters( 'send_network_admin_email_change_email', $send, $old_email, $new_email, $network_id );
if ( ! $send ) {
return;
}
/* translators: Do not translate OLD_EMAIL, NEW_EMAIL, SITENAME, SITEURL: those are placeholders. */
$email_change_text = __(
'Hi,
This notice confirms that the network admin email address was changed on ###SITENAME###.
The new network admin email address is ###NEW_EMAIL###.
This email has been sent to ###OLD_EMAIL###
Regards,
All at ###SITENAME###
###SITEURL###'
);
$email_change_email = array(
'to' => $old_email,
/* translators: Network admin email change notification email subject. %s: Network title. */
'subject' => __( '[%s] Network Admin Email Changed' ),
'message' => $email_change_text,
'headers' => '',
);
// Get network name.
$network_name = wp_specialchars_decode( get_site_option( 'site_name' ), ENT_QUOTES );
/**
* Filters the contents of the email notification sent when the network admin email address is changed.
*
* @since 4.9.0
*
* @param array $email_change_email {
* Used to build wp_mail().
*
* @type string $to The intended recipient.
* @type string $subject The subject of the email.
* @type string $message The content of the email.
* The following strings have a special meaning and will get replaced dynamically:
* - ###OLD_EMAIL### The old network admin email address.
* - ###NEW_EMAIL### The new network admin email address.
* - ###SITENAME### The name of the network.
* - ###SITEURL### The URL to the site.
* @type string $headers Headers.
* }
* @param string $old_email The old network admin email address.
* @param string $new_email The new network admin email address.
* @param int $network_id ID of the network.
*/
$email_change_email = apply_filters( 'network_admin_email_change_email', $email_change_email, $old_email, $new_email, $network_id );
$email_change_email['message'] = str_replace( '###OLD_EMAIL###', $old_email, $email_change_email['message'] );
$email_change_email['message'] = str_replace( '###NEW_EMAIL###', $new_email, $email_change_email['message'] );
$email_change_email['message'] = str_replace( '###SITENAME###', $network_name, $email_change_email['message'] );
$email_change_email['message'] = str_replace( '###SITEURL###', home_url(), $email_change_email['message'] );
wp_mail(
$email_change_email['to'],
sprintf(
$email_change_email['subject'],
$network_name
),
$email_change_email['message'],
$email_change_email['headers']
);
}
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