--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/wp-includes/ms-functions.php Mon Nov 19 18:26:13 2012 +0100
@@ -0,0 +1,1982 @@
+<?php
+/**
+ * Multisite WordPress API
+ *
+ * @package WordPress
+ * @subpackage Multisite
+ * @since 3.0.0
+ */
+
+/**
+ * Gets the network's site and user counts.
+ *
+ * @since MU 1.0
+ * @uses get_blog_count()
+ * @uses get_user_count()
+ *
+ * @return array Site and user count for the network.
+ */
+function get_sitestats() {
+ global $wpdb;
+
+ $stats = array(
+ 'blogs' => get_blog_count(),
+ 'users' => get_user_count(),
+ );
+
+ return $stats;
+}
+
+/**
+ * Get the admin for a domain/path combination.
+ *
+ * @since MU 1.0
+ *
+ * @param string $sitedomain Optional. Site domain.
+ * @param string $path Optional. Site path.
+ * @return array The network admins
+ */
+function get_admin_users_for_domain( $sitedomain = '', $path = '' ) {
+ global $wpdb;
+
+ if ( ! $sitedomain )
+ $site_id = $wpdb->siteid;
+ else
+ $site_id = $wpdb->get_var( $wpdb->prepare( "SELECT id FROM $wpdb->site WHERE domain = %s AND path = %s", $sitedomain, $path ) );
+
+ if ( $site_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", $site_id ), ARRAY_A );
+
+ return false;
+}
+
+/**
+ * Get one of a user's active blogs
+ *
+ * Returns the user's primary blog, if she has 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 1.0
+ * @uses get_blogs_of_user()
+ * @uses add_user_to_blog()
+ * @uses get_blog_details()
+ *
+ * @param int $user_id The unique ID of the user
+ * @return object The blog object
+ */
+function get_active_blog_for_user( $user_id ) {
+ global $wpdb;
+ $blogs = get_blogs_of_user( $user_id );
+ if ( empty( $blogs ) )
+ return null;
+
+ if ( !is_multisite() )
+ return $blogs[$wpdb->blogid];
+
+ $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_blog_details( $first_blog->userblog_id );
+ } else {
+ $primary = get_blog_details( $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?
+ add_user_to_blog( $first_blog->userblog_id, $user_id, 'subscriber' );
+ update_user_meta( $user_id, 'primary_blog', $first_blog->userblog_id );
+ $primary = $first_blog;
+ }
+
+ if ( ( ! is_object( $primary ) ) || ( $primary->archived == 1 || $primary->spam == 1 || $primary->deleted == 1 ) ) {
+ $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 ( $blog->site_id != $wpdb->siteid )
+ continue;
+ $details = get_blog_details( $blog_id );
+ if ( is_object( $details ) && $details->archived == 0 && $details->spam == 0 && $details->deleted == 0 ) {
+ $ret = $blog;
+ 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', $blog->domain );
+ break;
+ }
+ }
+ } else {
+ return null;
+ }
+ 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 2.7
+ *
+ * @return int
+ */
+function get_user_count() {
+ return get_site_option( '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 1.0
+ *
+ * @param int $id Optional. A site_id.
+ * @return int
+ */
+function get_blog_count( $id = 0 ) {
+ return get_site_option( 'blog_count' );
+}
+
+/**
+ * Get a blog post from any site on the network.
+ *
+ * @since MU 1.0
+ *
+ * @param int $blog_id ID of the blog.
+ * @param int $post_id ID of the post you're looking for.
+ * @return object The post.
+ */
+function get_blog_post( $blog_id, $post_id ) {
+ global $wpdb;
+
+ $key = $blog_id . '-' . $post_id;
+ $post = wp_cache_get( $key, 'global-posts' );
+ if ( $post == false ) {
+ $post = $wpdb->get_row( $wpdb->prepare( 'SELECT * FROM ' . $wpdb->get_blog_prefix( $blog_id ) . 'posts WHERE ID = %d', $post_id ) );
+ wp_cache_add( $key, $post, 'global-posts' );
+ }
+
+ return $post;
+}
+
+/**
+ * Add a user to a blog.
+ *
+ * Use the 'add_user_to_blog' action to fire an event when
+ * users are added to a blog.
+ *
+ * @since MU 1.0
+ *
+ * @param int $blog_id ID of the blog you're adding the user to.
+ * @param int $user_id ID of the user you're adding.
+ * @param string $role The role you want the user to have
+ * @return bool
+ */
+function add_user_to_blog( $blog_id, $user_id, $role ) {
+ switch_to_blog($blog_id);
+
+ $user = new WP_User($user_id);
+
+ if ( ! $user->exists() ) {
+ restore_current_blog();
+ return new WP_Error('user_does_not_exist', __('That user does not exist.'));
+ }
+
+ if ( !get_user_meta($user_id, 'primary_blog', true) ) {
+ update_user_meta($user_id, 'primary_blog', $blog_id);
+ $details = get_blog_details($blog_id);
+ update_user_meta($user_id, 'source_domain', $details->domain);
+ }
+
+ $user->set_role($role);
+
+ do_action('add_user_to_blog', $user_id, $role, $blog_id);
+ wp_cache_delete( $user_id, 'users' );
+ restore_current_blog();
+ return true;
+}
+
+/**
+ * Remove a user from a blog.
+ *
+ * Use the '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 1.0
+ *
+ * @param int $user_id ID of the user you're removing.
+ * @param int $blog_id ID of the blog you're removing the user from.
+ * @param string $reassign Optional. A user to whom to reassign posts.
+ * @return bool
+ */
+function remove_user_from_blog($user_id, $blog_id = '', $reassign = '') {
+ global $wpdb;
+ switch_to_blog($blog_id);
+ $user_id = (int) $user_id;
+ do_action('remove_user_from_blog', $user_id, $blog_id);
+
+ // 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);
+ $user = new WP_User($user_id);
+ if ( ! $user->exists() ) {
+ 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;
+ $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET post_author = %d WHERE post_author = %d", $reassign, $user_id) );
+ $wpdb->query( $wpdb->prepare("UPDATE $wpdb->links SET link_owner = %d WHERE link_owner = %d", $reassign, $user_id) );
+ }
+
+ restore_current_blog();
+
+ return true;
+}
+
+/**
+ * Create an empty blog.
+ *
+ * @since MU 1.0
+ * @uses install_blog()
+ *
+ * @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 int The ID of the newly created blog
+ */
+function create_empty_blog( $domain, $path, $weblog_title, $site_id = 1 ) {
+ $domain = addslashes( $domain );
+ $weblog_title = addslashes( $weblog_title );
+
+ if ( empty($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 permalink for a post on another blog.
+ *
+ * @since MU 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 ) {
+ $key = "{$_blog_id}-{$post_id}-blog_permalink";
+ $link = wp_cache_get( $key, 'site-options' );
+ if ( $link == false ) {
+ switch_to_blog( $_blog_id );
+ $link = get_permalink( $post_id );
+ restore_current_blog();
+ wp_cache_add( $key, $link, 'site-options', 360 );
+ }
+ 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 2.6.5
+ *
+ * @param string $domain
+ * @param string $path Optional. Not required for subdomain installations.
+ * @return int
+ */
+function get_blog_id_from_url( $domain, $path = '/' ) {
+ global $wpdb;
+
+ $domain = strtolower( $wpdb->escape( $domain ) );
+ $path = strtolower( $wpdb->escape( $path ) );
+ $id = wp_cache_get( md5( $domain . $path ), 'blog-id-cache' );
+
+ if ( $id == -1 ) { // blog does not exist
+ return 0;
+ } elseif ( $id ) {
+ return (int)$id;
+ }
+
+ $id = $wpdb->get_var( "SELECT blog_id FROM $wpdb->blogs WHERE domain = '$domain' and path = '$path' /* get_blog_id_from_url */" );
+
+ if ( !$id ) {
+ wp_cache_set( md5( $domain . $path ), -1, 'blog-id-cache' );
+ return false;
+ }
+ 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
+ *
+ * @param string $user_email The email provided by the user at registration.
+ * @return bool Returns true when the email address is banned.
+ */
+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);
+
+ if ( is_array( $banned_names ) && empty( $banned_names ) == false ) {
+ $email_domain = strtolower( substr( $user_email, 1 + strpos( $user_email, '@' ) ) );
+ foreach ( (array) $banned_names as $banned_domain ) {
+ if ( $banned_domain == '' )
+ continue;
+ if (
+ strstr( $email_domain, $banned_domain ) ||
+ (
+ strstr( $banned_domain, '/' ) &&
+ preg_match( $banned_domain, $email_domain )
+ )
+ )
+ return true;
+ }
+ }
+ return false;
+}
+
+/**
+ * Processes new user registrations.
+ *
+ * Checks the data provided by the user during signup. Verifies
+ * the validity and uniqueness of user names and user email addresses,
+ * and checks email addresses against admin-provided domain
+ * whitelists and blacklists.
+ *
+ * The hook 'wpmu_validate_user_signup' provides an easy way
+ * to modify the signup process. The value $result, which is passed
+ * to the hook, contains both the user-provided info and the error
+ * messages created by the function. '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
+ * @uses is_email_address_unsafe()
+ * @uses username_exists()
+ * @uses email_exists()
+ *
+ * @param string $user_name The login name provided by the user.
+ * @param string $user_email The email provided by the user.
+ * @return array Contains username, email, and error messages.
+ */
+function wpmu_validate_user_signup($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', __( 'Only lowercase letters (a-z) and numbers are allowed.' ) );
+ $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 ) == false ) {
+ $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', __( 'That username is not allowed.' ) );
+
+ if ( 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 ( strpos( ' ' . $user_name, '_' ) != false )
+ $errors->add( 'user_name', __( 'Sorry, usernames may not contain the character “_”!' ) );
+
+ // all numeric?
+ $match = array();
+ preg_match( '/[0-9]*/', $user_name, $match );
+ if ( $match[0] == $user_name )
+ $errors->add('user_name', __('Sorry, usernames must have letters too!'));
+
+ if ( !is_email( $user_email ) )
+ $errors->add('user_email', __( 'Please enter a correct email address.' ) );
+
+ $limited_email_domains = get_site_option( 'limited_email_domains' );
+ if ( is_array( $limited_email_domains ) && empty( $limited_email_domains ) == false ) {
+ $emaildomain = substr( $user_email, 1 + strpos( $user_email, '@' ) );
+ if ( in_array( $emaildomain, $limited_email_domains ) == false )
+ $errors->add('user_email', __('Sorry, that email address is not allowed!'));
+ }
+
+ // Check if the username has been used already.
+ if ( username_exists($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 != null ) {
+ $registered_at = mysql2date('U', $signup->registered);
+ $now = current_time( 'timestamp', true );
+ $diff = $now - $registered_at;
+ // If registered more than two days ago, cancel registration and let this signup go through.
+ if ( $diff > 172800 )
+ $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.'));
+
+ if ( $signup->active == 0 && $signup->user_email == $user_email )
+ $errors->add('user_email_used', __('username and email used'));
+ }
+
+ $signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE user_email = %s", $user_email) );
+ if ( $signup != null ) {
+ $diff = current_time( 'timestamp', true ) - mysql2date('U', $signup->registered);
+ // If registered more than two days ago, cancel registration and let this signup go through.
+ if ( $diff > 172800 )
+ $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);
+
+ 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 'wpmu_validate_blog_signup' if you want to modify
+ * the way that WordPress validates new site signups.
+ *
+ * @since MU
+ * @uses domain_exists()
+ * @uses username_exists()
+ *
+ * @param string $blogname The blog name provided by the user. Must be unique.
+ * @param string $blog_title The blog title provided by the user.
+ * @return array Contains the new site data and error messages.
+ */
+function wpmu_validate_blog_signup($blogname, $blog_title, $user = '') {
+ global $wpdb, $domain, $base, $current_site;
+
+ $blog_title = strip_tags( $blog_title );
+ $blog_title = substr( $blog_title, 0, 50 );
+
+ $errors = new WP_Error();
+ $illegal_names = get_site_option( 'illegal_names' );
+ if ( $illegal_names == false ) {
+ $illegal_names = array( 'www', 'web', 'root', 'admin', 'main', 'invite', 'administrator' );
+ add_site_option( 'illegal_names', $illegal_names );
+ }
+
+ // On sub dir installs, Some names are so illegal, only a filter can spring them from jail
+ if (! is_subdomain_install() )
+ $illegal_names = array_merge($illegal_names, apply_filters( 'subdirectory_reserved_names', array( 'page', 'comments', 'blog', 'files', 'feed' ) ) );
+
+ if ( empty( $blogname ) )
+ $errors->add('blogname', __( 'Please enter a site name.' ) );
+
+ if ( preg_match( '/[^a-z0-9]+/', $blogname ) )
+ $errors->add('blogname', __( 'Only lowercase letters and numbers allowed.' ) );
+
+ if ( in_array( $blogname, $illegal_names ) == true )
+ $errors->add('blogname', __( 'That name is not allowed.' ) );
+
+ if ( strlen( $blogname ) < 4 && !is_super_admin() )
+ $errors->add('blogname', __( 'Site name must be at least 4 characters.' ) );
+
+ if ( strpos( ' ' . $blogname, '_' ) != false )
+ $errors->add( 'blogname', __( 'Sorry, site names may not contain the character “_”!' ) );
+
+ // 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_site->blog_id ) . "posts WHERE post_type = 'page' AND post_name = %s", $blogname ) ) )
+ $errors->add( 'blogname', __( 'Sorry, you may not use that site name.' ) );
+
+ // all numeric?
+ $match = array();
+ preg_match( '/[0-9]*/', $blogname, $match );
+ if ( $match[0] == $blogname )
+ $errors->add('blogname', __('Sorry, site names must have letters too!'));
+
+ $blogname = apply_filters( 'newblogname', $blogname );
+
+ $blog_title = stripslashes( $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) )
+ $errors->add('blogname', __('Sorry, that site already exists!'));
+
+ if ( username_exists( $blogname ) ) {
+ if ( is_object( $user ) == false || ( is_object($user) && ( $user->user_login != $blogname ) ) )
+ $errors->add( 'blogname', __( 'Sorry, that site is reserved!' ) );
+ }
+
+ // Has someone already signed up for this domain?
+ $signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE domain = %s AND path = %s", $mydomain, $path) ); // TODO: Check email too?
+ if ( ! empty($signup) ) {
+ $diff = current_time( 'timestamp', true ) - mysql2date('U', $signup->registered);
+ // If registered more than two days ago, cancel registration and let this signup go through.
+ if ( $diff > 172800 )
+ $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, 'errors' => $errors);
+ return apply_filters('wpmu_validate_blog_signup', $result);
+}
+
+/**
+ * Record site signup information for future activation.
+ *
+ * @since MU
+ * @uses wpmu_signup_blog_notification()
+ *
+ * @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 $meta By default, contains the requested privacy setting and lang_id.
+ */
+function wpmu_signup_blog($domain, $path, $title, $user, $user_email, $meta = '') {
+ global $wpdb;
+
+ $key = substr( md5( time() . rand() . $domain ), 0, 16 );
+ $meta = serialize($meta);
+ $domain = $wpdb->escape($domain);
+ $path = $wpdb->escape($path);
+ $title = $wpdb->escape($title);
+
+ $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' => $meta
+ ) );
+
+ wpmu_signup_blog_notification($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
+ * @uses wpmu_signup_user_notification()
+ *
+ * @param string $user The user's requested login name.
+ * @param string $user_email The user's email address.
+ * @param array $meta By default, this is an empty array.
+ */
+function wpmu_signup_user($user, $user_email, $meta = '') {
+ global $wpdb;
+
+ // Format data
+ $user = preg_replace( '/\s+/', '', sanitize_user( $user, true ) );
+ $user_email = sanitize_email( $user_email );
+ $key = substr( md5( time() . rand() . $user_email ), 0, 16 );
+ $meta = serialize($meta);
+
+ $wpdb->insert( $wpdb->signups, array(
+ 'domain' => '',
+ 'path' => '',
+ 'title' => '',
+ 'user_login' => $user,
+ 'user_email' => $user_email,
+ 'registered' => current_time('mysql', true),
+ 'activation_key' => $key,
+ 'meta' => $meta
+ ) );
+
+ wpmu_signup_user_notification($user, $user_email, $key, $meta);
+}
+
+/**
+ * Notify user of signup success.
+ *
+ * This is the notification function used when site registration
+ * is enabled.
+ *
+ * Filter 'wpmu_signup_blog_notification' to bypass this function or
+ * replace it with your own notification behavior.
+ *
+ * Filter 'wpmu_signup_blog_notification_email' and
+ * 'wpmu_signup_blog_notification_subject' to change the content
+ * and subject line of the email sent to newly registered users.
+ *
+ * @since MU
+ *
+ * @param string $domain The new blog domain.
+ * @param string $path The new blog path.
+ * @param string $title The site title.
+ * @param string $user The user's login name.
+ * @param string $user_email The user's email address.
+ * @param array $meta By default, contains the requested privacy setting and lang_id.
+ * @param string $key The activation key created in wpmu_signup_blog()
+ * @return bool
+ */
+function wpmu_signup_blog_notification($domain, $path, $title, $user, $user_email, $key, $meta = '') {
+ global $current_site;
+
+ if ( !apply_filters('wpmu_signup_blog_notification', $domain, $path, $title, $user, $user_email, $key, $meta) )
+ return false;
+
+ // Send email with activation link.
+ if ( !is_subdomain_install() || $current_site->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@' . $_SERVER['SERVER_NAME'];
+ $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) );
+ $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
+ $message = sprintf(
+ apply_filters( 'wpmu_signup_blog_notification_email',
+ __( "To activate your blog, please click the following link:\n\n%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%s" ),
+ $domain, $path, $title, $user, $user_email, $key, $meta
+ ),
+ $activate_url,
+ esc_url( "http://{$domain}{$path}" ),
+ $key
+ );
+ // TODO: Don't hard code activation link.
+ $subject = sprintf(
+ apply_filters( 'wpmu_signup_blog_notification_subject',
+ __( '[%1$s] Activate %2$s' ),
+ $domain, $path, $title, $user, $user_email, $key, $meta
+ ),
+ $from_name,
+ esc_url( 'http://' . $domain . $path )
+ );
+ wp_mail($user_email, $subject, $message, $message_headers);
+ return true;
+}
+
+/**
+ * Notify user of signup success.
+ *
+ * This is the notification function used when no new site has
+ * been requested.
+ *
+ * Filter 'wpmu_signup_user_notification' to bypass this function or
+ * replace it with your own notification behavior.
+ *
+ * Filter 'wpmu_signup_user_notification_email' and
+ * 'wpmu_signup_user_notification_subject' to change the content
+ * and subject line of the email sent to newly registered users.
+ *
+ * @since MU
+ *
+ * @param string $user The user's login name.
+ * @param string $user_email The user's email address.
+ * @param array $meta By default, an empty array.
+ * @param string $key The activation key created in wpmu_signup_user()
+ * @return bool
+ */
+function wpmu_signup_user_notification($user, $user_email, $key, $meta = '') {
+ if ( !apply_filters('wpmu_signup_user_notification', $user, $user_email, $key, $meta) )
+ return false;
+
+ // Send email with activation link.
+ $admin_email = get_site_option( 'admin_email' );
+ if ( $admin_email == '' )
+ $admin_email = 'support@' . $_SERVER['SERVER_NAME'];
+ $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) );
+ $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
+ $message = sprintf(
+ apply_filters( 'wpmu_signup_user_notification_email',
+ __( "To activate your user, please click the following link:\n\n%s\n\nAfter you activate, you will receive *another email* with your login.\n\n" ),
+ $user, $user_email, $key, $meta
+ ),
+ site_url( "wp-activate.php?key=$key" )
+ );
+ // TODO: Don't hard code activation link.
+ $subject = sprintf(
+ apply_filters( 'wpmu_signup_user_notification_subject',
+ __( '[%1$s] Activate %2$s' ),
+ $user, $user_email, $key, $meta
+ ),
+ $from_name,
+ $user
+ );
+ wp_mail($user_email, $subject, $message, $message_headers);
+ return true;
+}
+
+/**
+ * Activate a signup.
+ *
+ * Hook to 'wpmu_activate_user' or '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
+ * @uses wp_generate_password()
+ * @uses wpmu_welcome_user_notification()
+ * @uses add_user_to_blog()
+ * @uses add_new_user_to_blog()
+ * @uses wpmu_create_user()
+ * @uses wpmu_create_blog()
+ * @uses wpmu_welcome_notification()
+ *
+ * @param string $key The activation key provided to the user.
+ * @return array An array containing information about the activated user and/or blog
+ */
+function wpmu_activate_signup($key) {
+ global $wpdb, $current_site;
+
+ $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);
+ $user_login = $wpdb->escape($signup->user_login);
+ $user_email = $wpdb->escape($signup->user_email);
+ $password = wp_generate_password( 12, false );
+
+ $user_id = username_exists($user_login);
+
+ if ( ! $user_id )
+ $user_id = wpmu_create_user($user_login, $password, $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.' ), $signup);
+
+ wpmu_welcome_user_notification($user_id, $password, $meta);
+
+ add_new_user_to_blog( $user_id, $user_email, $meta );
+ 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, $wpdb->siteid );
+
+ // TODO: What to do if we create a user but cannot create a blog?
+ if ( is_wp_error($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' => $key) );
+ wpmu_welcome_notification($blog_id, $user_id, $password, $signup->title, $meta);
+ 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);
+}
+
+/**
+ * Create a user.
+ *
+ * This function runs when a user self-registers as well as when
+ * a Super Admin creates a new user. Hook to 'wpmu_new_user' for events
+ * that should affect all new users, but only on Multisite (otherwise
+ * use 'user_register').
+ *
+ * @since MU
+ * @uses wp_create_user()
+ *
+ * @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 mixed 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' );
+
+ 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 'wpmu_new_blog'
+ * for events that should affect all new sites.
+ *
+ * On subdirectory installs, $domain is the same as the main site's
+ * domain, and the path is the subdirectory name (eg 'example.com'
+ * and '/blog1/'). On subdomain installs, $domain is the new subdomain +
+ * root domain (eg 'blog1.example.com'), and $path is '/'.
+ *
+ * @since MU
+ * @uses domain_exists()
+ * @uses insert_blog()
+ * @uses wp_install_defaults()
+ * @uses add_user_to_blog()
+ *
+ * @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 $meta Optional. Used to set initial site options.
+ * @param int $site_id Optional. Only relevant on multi-network installs.
+ * @return mixed Returns WP_Error object on failure, int $blog_id on success
+ */
+function wpmu_create_blog($domain, $path, $title, $user_id, $meta = '', $site_id = 1) {
+ $domain = preg_replace( '/\s+/', '', sanitize_user( $domain, true ) );
+
+ if ( is_subdomain_install() )
+ $domain = str_replace( '@', '', $domain );
+
+ $title = strip_tags( $title );
+ $user_id = (int) $user_id;
+
+ if ( empty($path) )
+ $path = '/';
+
+ // Check if the domain has been used already. We should return an error message.
+ if ( domain_exists($domain, $path, $site_id) )
+ return new WP_Error('blog_taken', __('Site already exists.'));
+
+ if ( !defined('WP_INSTALLING') )
+ define( 'WP_INSTALLING', true );
+
+ if ( ! $blog_id = insert_blog($domain, $path, $site_id) )
+ return new WP_Error('insert_blog', __('Could not create site.'));
+
+ switch_to_blog($blog_id);
+ install_blog($blog_id, $title);
+ wp_install_defaults($user_id);
+
+ add_user_to_blog($blog_id, $user_id, 'administrator');
+
+ if ( is_array($meta) ) foreach ($meta as $key => $value) {
+ if ( $key == 'public' || $key == 'archived' || $key == 'mature' || $key == 'spam' || $key == 'deleted' || $key == 'lang_id' )
+ update_blog_status( $blog_id, $key, $value );
+ else
+ update_option( $key, $value );
+ }
+
+ add_option( 'WPLANG', get_site_option( 'WPLANG' ) );
+ update_option( 'blog_public', (int)$meta['public'] );
+
+ if ( ! is_super_admin( $user_id ) && ! get_user_meta( $user_id, 'primary_blog', true ) )
+ update_user_meta( $user_id, 'primary_blog', $blog_id );
+
+ restore_current_blog();
+ do_action( 'wpmu_new_blog', $blog_id, $user_id, $domain, $path, $site_id, $meta );
+
+ return $blog_id;
+}
+
+/**
+ * Notifies the network admin that a new site has been activated.
+ *
+ * Filter 'newblog_notify_siteadmin' to change the content of
+ * the notification email.
+ *
+ * @since MU
+ *
+ * @param int $blog_id The new site's ID.
+ * @return bool
+ */
+function newblog_notify_siteadmin( $blog_id, $deprecated = '' ) {
+ if ( get_site_option( 'registrationnotification' ) != 'yes' )
+ 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( __( 'New Site: %1s
+URL: %2s
+Remote IP: %3s
+
+Disable these notifications: %4s' ), $blogname, $siteurl, $_SERVER['REMOTE_ADDR'], $options_site_url);
+ $msg = apply_filters( 'newblog_notify_siteadmin', $msg );
+
+ wp_mail( $email, sprintf( __( 'New Site Registration: %s' ), $siteurl ), $msg );
+ return true;
+}
+
+/**
+ * Notifies the network admin that a new user has been activated.
+ *
+ * Filter 'newuser_notify_siteadmin' to change the content of
+ * the notification email.
+ *
+ * @since MU
+ * @uses apply_filters() Filter newuser_notify_siteadmin to change the content of the email message
+ *
+ * @param int $user_id The new user's ID.
+ * @return bool
+ */
+function newuser_notify_siteadmin( $user_id ) {
+ if ( get_site_option( 'registrationnotification' ) != 'yes' )
+ return false;
+
+ $email = get_site_option( 'admin_email' );
+
+ if ( is_email($email) == false )
+ return false;
+
+ $user = new WP_User($user_id);
+
+ $options_site_url = esc_url(network_admin_url('settings.php'));
+ $msg = sprintf(__('New User: %1s
+Remote IP: %2s
+
+Disable these notifications: %3s'), $user->user_login, $_SERVER['REMOTE_ADDR'], $options_site_url);
+
+ $msg = apply_filters( 'newuser_notify_siteadmin', $msg, $user );
+ wp_mail( $email, sprintf(__('New User Registration: %s'), $user->user_login), $msg );
+ return true;
+}
+
+/**
+ * Check whether a blogname is already taken.
+ *
+ * Used during the new site registration process to ensure
+ * that each blogname is unique.
+ *
+ * @since MU
+ *
+ * @param string $domain The domain to be checked.
+ * @param string $path The path to be checked.
+ * @param int $site_id Optional. Relevant only on multi-network installs.
+ * @return int
+ */
+function domain_exists($domain, $path, $site_id = 1) {
+ global $wpdb;
+ return $wpdb->get_var( $wpdb->prepare("SELECT blog_id FROM $wpdb->blogs WHERE domain = %s AND path = %s AND site_id = %d", $domain, $path, $site_id) );
+}
+
+/**
+ * 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
+ *
+ * @param string $domain The domain of the new site.
+ * @param string $path The path of the new site.
+ * @param int $site_id Unless you're running a multi-network install, be sure to set this value to 1.
+ * @return int The ID of the new row
+ */
+function insert_blog($domain, $path, $site_id) {
+ global $wpdb;
+
+ $path = trailingslashit($path);
+ $site_id = (int) $site_id;
+
+ $result = $wpdb->insert( $wpdb->blogs, array('site_id' => $site_id, 'domain' => $domain, 'path' => $path, 'registered' => current_time('mysql')) );
+ if ( ! $result )
+ return false;
+
+ refresh_blog_details($wpdb->insert_id);
+ return $wpdb->insert_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
+ * @uses make_db_current_silent()
+ * @uses populate_roles()
+ *
+ * @param int $blog_id The value returned by insert_blog().
+ * @param string $blog_title The title of the new site.
+ */
+function install_blog($blog_id, $blog_title = '') {
+ global $wpdb, $table_prefix, $wp_roles;
+ $wpdb->suppress_errors();
+
+ // Cast for security
+ $blog_id = (int) $blog_id;
+
+ require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
+
+ if ( $wpdb->get_results("SELECT ID FROM $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(false);
+
+ $url = get_blogaddress_by_id($blog_id);
+
+ // Set everything up
+ make_db_current_silent( 'blog' );
+ populate_options();
+ populate_roles();
+ $wp_roles->_init();
+
+ // fix url.
+ update_option('siteurl', $url);
+ update_option('home', $url);
+ update_option('fileupload_url', $url . "files" );
+ update_option('upload_path', UPLOADBLOGSDIR . "/$blog_id/files");
+ update_option('blogname', stripslashes( $blog_title ) );
+ update_option('admin_email', '');
+ $wpdb->update( $wpdb->options, array('option_value' => ''), array('option_name' => 'admin_email') );
+
+ // remove all perms
+ $wpdb->delete( $wpdb->usermeta, array( 'meta_key' => $table_prefix.'user_level' ) );
+
+ $wpdb->delete( $wpdb->usermeta, array( 'meta_key' => $table_prefix.'capabilities' ) );
+
+ $wpdb->suppress_errors( false );
+}
+
+/**
+ * Set blog defaults.
+ *
+ * This function creates a row in the wp_blogs table.
+ *
+ * @since MU
+ * @deprecated MU
+ * @deprecated Use wp_install_defaults()
+ * @uses wp_install_defaults()
+ *
+ * @param int $blog_id Ignored in this function.
+ * @param int $user_id
+ */
+function install_blog_defaults($blog_id, $user_id) {
+ global $wpdb;
+
+ require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
+
+ $wpdb->suppress_errors();
+
+ wp_install_defaults($user_id);
+
+ $wpdb->suppress_errors( false );
+}
+
+/**
+ * Notify a user that her blog activation has been successful.
+ *
+ * Filter 'wpmu_welcome_notification' to disable or bypass.
+ *
+ * Filter 'update_welcome_email' and 'update_welcome_subject' to
+ * modify the content and subject line of the notification email.
+ *
+ * @since MU
+ *
+ * @param int $blog_id
+ * @param int $user_id
+ * @param string $password
+ * @param string $title The new blog's title
+ * @param array $meta Optional. Not used in the default function, but is passed along to hooks for customization.
+ * @return bool
+ */
+function wpmu_welcome_notification($blog_id, $user_id, $password, $title, $meta = '') {
+ global $current_site;
+
+ if ( !apply_filters('wpmu_welcome_notification', $blog_id, $user_id, $password, $title, $meta) )
+ return false;
+
+ $welcome_email = stripslashes( get_site_option( 'welcome_email' ) );
+ if ( $welcome_email == false )
+ $welcome_email = stripslashes( __( 'Dear User,
+
+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);
+ $user = new WP_User($user_id);
+
+ $welcome_email = str_replace( 'SITE_NAME', $current_site->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 );
+
+ $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@' . $_SERVER['SERVER_NAME'];
+
+ $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) );
+ $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
+ $message = $welcome_email;
+
+ if ( empty( $current_site->site_name ) )
+ $current_site->site_name = 'WordPress';
+
+ $subject = apply_filters( 'update_welcome_subject', sprintf(__('New %1$s Site: %2$s'), $current_site->site_name, stripslashes( $title ) ) );
+ wp_mail($user->user_email, $subject, $message, $message_headers);
+ return true;
+}
+
+/**
+ * Notify a user that her account activation has been successful.
+ *
+ * Filter 'wpmu_welcome_user_notification' to disable or bypass.
+ *
+ * Filter 'update_welcome_user_email' and 'update_welcome_user_subject' to
+ * modify the content and subject line of the notification email.
+ *
+ * @since MU
+ *
+ * @param int $user_id
+ * @param string $password
+ * @param array $meta Optional. Not used in the default function, but is passed along to hooks for customization.
+ * @return bool
+ */
+function wpmu_welcome_user_notification($user_id, $password, $meta = '') {
+ global $current_site;
+
+ if ( !apply_filters('wpmu_welcome_user_notification', $user_id, $password, $meta) )
+ return false;
+
+ $welcome_email = get_site_option( 'welcome_user_email' );
+
+ $user = new WP_User($user_id);
+
+ $welcome_email = apply_filters( 'update_welcome_user_email', $welcome_email, $user_id, $password, $meta);
+ $welcome_email = str_replace( 'SITE_NAME', $current_site->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@' . $_SERVER['SERVER_NAME'];
+
+ $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) );
+ $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
+ $message = $welcome_email;
+
+ if ( empty( $current_site->site_name ) )
+ $current_site->site_name = 'WordPress';
+
+ $subject = apply_filters( 'update_welcome_user_subject', sprintf(__('New %1$s User: %2$s'), $current_site->site_name, $user->user_login) );
+ wp_mail($user->user_email, $subject, $message, $message_headers);
+ return true;
+}
+
+/**
+ * Get the current site info.
+ *
+ * Returns an object containing the ID, domain, path, and site_name
+ * of the site being viewed.
+ *
+ * @since MU
+ *
+ * @return object
+ */
+function get_current_site() {
+ global $current_site;
+ return $current_site;
+}
+
+/**
+ * Get a numeric user ID from either an email address or a login.
+ *
+ * @since MU
+ * @uses is_email()
+ *
+ * @param string $string
+ * @return int
+ */
+function get_user_id_from_string( $string ) {
+ $user_id = 0;
+ if ( is_email( $string ) ) {
+ $user = get_user_by('email', $string);
+ if ( $user )
+ $user_id = $user->ID;
+ } elseif ( is_numeric( $string ) ) {
+ $user_id = $string;
+ } else {
+ $user = get_user_by('login', $string);
+ if ( $user )
+ $user_id = $user->ID;
+ }
+
+ return $user_id;
+}
+
+/**
+ * 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
+ * @uses get_blogs_of_user()
+ *
+ * @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
+
+/**
+ * Get the size of a directory.
+ *
+ * A helper function that is used primarily to check whether
+ * a blog has exceeded its allowed upload space.
+ *
+ * @since MU
+ * @uses recurse_dirsize()
+ *
+ * @param string $directory
+ * @return int
+ */
+function get_dirsize( $directory ) {
+ $dirsize = get_transient( 'dirsize_cache' );
+ if ( is_array( $dirsize ) && isset( $dirsize[ $directory ][ 'size' ] ) )
+ return $dirsize[ $directory ][ 'size' ];
+
+ if ( false == is_array( $dirsize ) )
+ $dirsize = array();
+
+ $dirsize[ $directory ][ 'size' ] = recurse_dirsize( $directory );
+
+ set_transient( 'dirsize_cache', $dirsize, 3600 );
+ return $dirsize[ $directory ][ 'size' ];
+}
+
+/**
+ * Get the size of a directory recursively.
+ *
+ * Used by get_dirsize() to get a directory's size when it contains
+ * other directories.
+ *
+ * @since MU
+ *
+ * @param string $directory
+ * @return int
+ */
+function recurse_dirsize( $directory ) {
+ $size = 0;
+
+ $directory = untrailingslashit( $directory );
+
+ if ( !file_exists($directory) || !is_dir( $directory ) || !is_readable( $directory ) )
+ return false;
+
+ if ($handle = opendir($directory)) {
+ while(($file = readdir($handle)) !== false) {
+ $path = $directory.'/'.$file;
+ if ($file != '.' && $file != '..') {
+ if (is_file($path)) {
+ $size += filesize($path);
+ } elseif (is_dir($path)) {
+ $handlesize = recurse_dirsize($path);
+ if ($handlesize > 0)
+ $size += $handlesize;
+ }
+ }
+ }
+ closedir($handle);
+ }
+ return $size;
+}
+
+/**
+ * Check whether a blog has used its allotted upload space.
+ *
+ * @since MU
+ * @uses get_dirsize()
+ *
+ * @param bool $echo Optional. If $echo is set and the quota is exceeded, a warning message is echoed. Default is true.
+ * @return int
+ */
+function upload_is_user_over_quota( $echo = true ) {
+ if ( get_site_option( 'upload_space_check_disabled' ) )
+ return false;
+
+ $spaceAllowed = get_space_allowed();
+ if ( empty( $spaceAllowed ) || !is_numeric( $spaceAllowed ) )
+ $spaceAllowed = 10; // Default space allowed is 10 MB
+
+ $size = get_dirsize( BLOGUPLOADDIR ) / 1024 / 1024;
+
+ if ( ($spaceAllowed-$size) < 0 ) {
+ if ( $echo )
+ _e( 'Sorry, you have used your space allocation. Please delete some files to upload more files.' ); // No space left
+ return true;
+ } else {
+ return false;
+ }
+}
+
+/**
+ * Check an array of MIME types against a whitelist.
+ *
+ * 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 filetype whitelist provided by Multisite
+ * Super Admins at wp-admin/network/settings.php.
+ *
+ * @since MU
+ *
+ * @param array $mimes
+ * @return array
+ */
+function check_upload_mimes( $mimes ) {
+ $site_exts = explode( ' ', get_site_option( 'upload_filetypes' ) );
+ foreach ( $site_exts as $ext ) {
+ foreach ( $mimes as $ext_pattern => $mime ) {
+ if ( $ext != '' && strpos( $ext_pattern, $ext ) !== false )
+ $site_mimes[$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_blog_details(). This function is called when posts
+ * are published to make sure the count stays current.
+ *
+ * @since MU
+ */
+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 user registrations.
+ *
+ * @since MU
+ *
+ * @param int $blog_id
+ * @param int $user_id
+ */
+function wpmu_log_new_registrations( $blog_id, $user_id ) {
+ global $wpdb;
+ $user = new WP_User( (int) $user_id );
+ $wpdb->insert( $wpdb->registration_log, array('email' => $user->user_email, 'IP' => preg_replace( '/[^0-9., ]/', '',$_SERVER['REMOTE_ADDR'] ), 'blog_id' => $blog_id, 'date_registered' => current_time('mysql')) );
+}
+
+/**
+ * Get the remaining upload space for this blog.
+ *
+ * @since MU
+ * @uses upload_is_user_over_quota()
+ * @uses get_space_allowed()
+ * @uses get_dirsize()
+ *
+ * @param int $size
+ * @return int
+ */
+function fix_import_form_size( $size ) {
+ if ( upload_is_user_over_quota( false ) == true )
+ return 0;
+
+ $spaceAllowed = 1024 * 1024 * get_space_allowed();
+ $dirsize = get_dirsize( BLOGUPLOADDIR );
+ if ( $size > $spaceAllowed - $dirsize )
+ return $spaceAllowed - $dirsize; // remaining space
+ else
+ return $size; // default
+}
+
+/**
+ * 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
+ *
+ * @param int $term_id An ID for a term on the current blog.
+ * @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 ( $global_terms_recurse === null ) {
+ $recurse_start = true;
+ $global_terms_recurse = 1;
+ } elseif ( 10 < $global_terms_recurse++ ) {
+ return $term_id;
+ }
+
+ $term_id = intval( $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 ( $global_id == null ) {
+ $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_row( $wpdb->prepare( "SELECT term_id FROM $wpdb->terms WHERE term_id = %d", $global_id ) );
+ if ( null != $local_id )
+ $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
+ *
+ * @return array The current site's domain
+ */
+function redirect_this_site( $deprecated = '' ) {
+ global $current_site;
+ return array( $current_site->domain );
+}
+
+/**
+ * Check whether an upload is too big.
+ *
+ * @since MU
+ *
+ * @param array $upload
+ * @return mixed 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 ) == false || defined( 'WP_IMPORTING' ) )
+ return $upload;
+
+ if ( strlen( $upload['bits'] ) > ( 1024 * get_site_option( 'fileupload_maxk', 1500 ) ) )
+ return sprintf( __( 'This file is too big. Files must be less than %d KB in size.' ) . '<br />', get_site_option( 'fileupload_maxk', 1500 ));
+
+ return $upload;
+}
+
+/**
+ * Add a nonce field to the signup page.
+ *
+ * @since MU
+ * @uses wp_nonce_field()
+ */
+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
+ * @uses wp_create_nonce()
+ *
+ * @param array $result
+ * @return array
+ */
+function signup_nonce_check( $result ) {
+ if ( !strpos( $_SERVER[ 'PHP_SELF' ], 'wp-signup.php' ) )
+ return $result;
+
+ if ( wp_create_nonce('signup_form_' . $_POST[ 'signup_form_id' ]) != $_POST['_signup_form'] )
+ wp_die( __('Please try again!') );
+
+ return $result;
+}
+
+/**
+ * Correct 404 redirects when NOBLOGREDIRECT is defined.
+ *
+ * @since MU
+ */
+function maybe_redirect_404() {
+ global $current_site;
+ if ( is_main_site() && is_404() && defined( 'NOBLOGREDIRECT' ) && ( $destination = apply_filters( 'blog_redirect_404', NOBLOGREDIRECT ) ) ) {
+ if ( $destination == '%siteurl%' )
+ $destination = network_home_url();
+ wp_redirect( $destination );
+ exit();
+ }
+}
+
+/**
+ * Add a new user to a blog by visiting /newbloguser/username/.
+ *
+ * This will only work when the user's details are saved as an option
+ * keyed as 'new_user_x', where 'x' is the username of the user to be
+ * added, as when a user is invited through the regular WP Add User interface.
+ *
+ * @since MU
+ * @uses add_existing_user_to_blog()
+ */
+function maybe_add_existing_user_to_blog() {
+ if ( false === strpos( $_SERVER[ 'REQUEST_URI' ], '/newbloguser/' ) )
+ return false;
+
+ $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(__('An error occurred adding you to this site. Back to the <a href="%s">homepage</a>.'), home_url() ) );
+
+ wp_die( sprintf(__('You have been added to this site. Please visit the <a href="%s">homepage</a> or <a href="%s">log in</a> using your username and password.'), home_url(), admin_url() ), __('Success') );
+}
+
+/**
+ * Add a user to a blog based on details from maybe_add_existing_user_to_blog().
+ *
+ * @since MU
+ * @uses add_user_to_blog()
+ *
+ * @param array $details
+ */
+function add_existing_user_to_blog( $details = false ) {
+ global $blog_id;
+
+ if ( is_array( $details ) ) {
+ $result = add_user_to_blog( $blog_id, $details[ 'user_id' ], $details[ 'role' ] );
+ do_action( 'added_existing_user', $details[ 'user_id' ], $result );
+ }
+ return $result;
+}
+
+/**
+ * Add a newly created user to the appropriate blog
+ *
+ * @since MU
+ *
+ * @param int $user_id
+ * @param string $email
+ * @param array $meta
+ */
+function add_new_user_to_blog( $user_id, $email, $meta ) {
+ global $current_site;
+ if ( !empty( $meta[ 'add_to_blog' ] ) ) {
+ $blog_id = $meta[ 'add_to_blog' ];
+ $role = $meta[ 'new_role' ];
+ remove_user_from_blog($user_id, $current_site->blog_id); // remove user from main blog.
+ add_user_to_blog( $blog_id, $user_id, $role );
+ update_user_meta( $user_id, 'primary_blog', $blog_id );
+ }
+}
+
+/**
+ * Correct From host on outgoing mail to match the site domain
+ *
+ * @since MU
+ */
+function fix_phpmailer_messageid( $phpmailer ) {
+ global $current_site;
+ $phpmailer->Hostname = $current_site->domain;
+}
+
+/**
+ * Check to see whether a user is marked as a spammer, based on username
+ *
+ * @since MU
+ * @uses get_current_user_id()
+ * @uses get_user_id_from_string()
+ *
+ * @param string $username
+ * @return bool
+ */
+function is_user_spammy( $username = 0 ) {
+ if ( $username == 0 ) {
+ $user_id = get_current_user_id();
+ } else {
+ $user_id = get_user_id_from_string( $username );
+ }
+ $u = new WP_User( $user_id );
+
+ return ( isset( $u->spam ) && $u->spam == 1 );
+}
+
+/**
+ * Update this blog's 'public' setting in the global blogs table.
+ *
+ * Public blogs have a setting of 1, private blogs are 0.
+ *
+ * @since MU
+ * @uses update_blog_status()
+ *
+ * @param int $old_value
+ * @param int $value The new public value
+ * @return bool
+ */
+function update_blog_public( $old_value, $value ) {
+ global $wpdb;
+ do_action('update_blog_public');
+ update_blog_status( $wpdb->blogid, 'public', (int) $value );
+}
+add_action('update_option_blog_public', 'update_blog_public', 10, 2);
+
+/**
+ * Get the "dashboard blog", the blog where users without a blog edit their profile data.
+ *
+ * @since MU
+ * @uses get_blog_details()
+ *
+ * @return int
+ */
+function get_dashboard_blog() {
+ if ( $blog = get_site_option( 'dashboard_blog' ) )
+ return get_blog_details( $blog );
+
+ return get_blog_details( $GLOBALS['current_site']->blog_id );
+}
+
+/**
+ * Check whether a usermeta key has to do with the current blog.
+ *
+ * @since MU
+ * @uses wp_get_current_user()
+ *
+ * @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;
+
+ $current_user = wp_get_current_user();
+ if ( $user_id == 0 )
+ $user_id = $current_user->ID;
+ if ( $blog_id == 0 )
+ $blog_id = $wpdb->blogid;
+
+ $local_key = $wpdb->get_blog_prefix( $blog_id ) . $key;
+
+ if ( isset( $current_user->$local_key ) )
+ return true;
+
+ return false;
+}
+
+/**
+ * Check whether users can self-register, based on Network settings.
+ *
+ * @since MU
+ *
+ * @return bool
+ */
+function users_can_register_signup_filter() {
+ $registration = get_site_option('registration');
+ if ( $registration == 'all' || $registration == 'user' )
+ return true;
+
+ return false;
+}
+add_filter('option_users_can_register', 'users_can_register_signup_filter');
+
+/**
+ * Ensure that the welcome message is not empty. Currently unused.
+ *
+ * @since MU
+ *
+ * @param string $text
+ * @return string
+ */
+function welcome_user_msg_filter( $text ) {
+ if ( !$text ) {
+ remove_filter( 'site_option_welcome_user_email', 'welcome_user_msg_filter' );
+ $text = __( 'Dear User,
+
+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;
+}
+add_filter( 'site_option_welcome_user_email', 'welcome_user_msg_filter' );
+
+/**
+ * Whether to force SSL on content.
+ *
+ * @since 2.8.5
+ *
+ * @param string|bool $force
+ * @return bool True if forced, false if not forced.
+ */
+function force_ssl_content( $force = '' ) {
+ static $forced_content;
+
+ if ( '' != $force ) {
+ $old_forced = $forced_content;
+ $forced_content = $force;
+ return $old_forced;
+ }
+
+ return $forced_content;
+}
+
+/**
+ * Formats an String URL to use HTTPS if HTTP is found.
+ * Useful as a filter.
+ *
+ * @since 2.8.5
+ **/
+function filter_SSL( $url ) {
+ if ( !is_string( $url ) )
+ return get_bloginfo( 'url' ); //return home blog url with proper scheme
+
+ $arrURL = parse_url( $url );
+
+ if ( force_ssl_content() && is_ssl() ) {
+ if ( 'http' === $arrURL['scheme'] )
+ $url = str_replace( $arrURL['scheme'], 'https', $url );
+ }
+
+ 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') && !defined('WP_INSTALLING') )
+ wp_schedule_event(time(), 'twicedaily', 'update_network_counts');
+}
+
+/**
+ * Update the network-wide counts for the current network.
+ *
+ * @since 3.1.0
+ */
+function wp_update_network_counts() {
+ global $wpdb;
+
+ $count = $wpdb->get_var( $wpdb->prepare("SELECT COUNT(blog_id) as c FROM $wpdb->blogs WHERE site_id = %d AND spam = '0' AND deleted = '0' and archived = '0'", $wpdb->siteid) );
+ update_site_option( 'blog_count', $count );
+
+ $count = $wpdb->get_var( $wpdb->prepare("SELECT COUNT(ID) as c FROM $wpdb->users WHERE spam = '0' AND deleted = '0'") );
+ update_site_option( 'user_count', $count );
+}