<?php
/**
* A simple set of functions to check our version 1.0 update service.
*
* @package WordPress
* @since 2.3.0
*/
/**
* Check WordPress version against the newest version.
*
* The WordPress version, PHP version, and Locale is sent. Checks against the
* WordPress server at api.wordpress.org server. Will only check if WordPress
* isn't installing.
*
* @package WordPress
* @since 2.3.0
* @uses $wp_version Used to check against the newest WordPress version.
*
* @return mixed Returns null if update is unsupported. Returns false if check is too soon.
*/
function wp_version_check() {
if ( defined('WP_INSTALLING') )
return;
global $wpdb, $wp_local_package;
include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version
$php_version = phpversion();
$current = get_site_transient( 'update_core' );
if ( ! is_object($current) ) {
$current = new stdClass;
$current->updates = array();
$current->version_checked = $wp_version;
}
$locale = apply_filters( 'core_version_check_locale', get_locale() );
// Update last_checked for current to prevent multiple blocking requests if request hangs
$current->last_checked = time();
set_site_transient( 'update_core', $current );
if ( method_exists( $wpdb, 'db_version' ) )
$mysql_version = preg_replace('/[^0-9.].*/', '', $wpdb->db_version());
else
$mysql_version = 'N/A';
if ( is_multisite( ) ) {
$user_count = get_user_count( );
$num_blogs = get_blog_count( );
$wp_install = network_site_url( );
$multisite_enabled = 1;
} else {
$user_count = count_users( );
$multisite_enabled = 0;
$num_blogs = 1;
$wp_install = home_url( '/' );
}
$local_package = isset( $wp_local_package )? $wp_local_package : '';
$url = "http://api.wordpress.org/core/version-check/1.6/?version=$wp_version&php=$php_version&locale=$locale&mysql=$mysql_version&local_package=$local_package&blogs=$num_blogs&users={$user_count['total_users']}&multisite_enabled=$multisite_enabled";
$options = array(
'timeout' => ( ( defined('DOING_CRON') && DOING_CRON ) ? 30 : 3 ),
'user-agent' => 'WordPress/' . $wp_version . '; ' . home_url( '/' ),
'headers' => array(
'wp_install' => $wp_install,
'wp_blog' => home_url( '/' )
)
);
$response = wp_remote_get($url, $options);
if ( is_wp_error( $response ) || 200 != wp_remote_retrieve_response_code( $response ) )
return false;
$body = trim( wp_remote_retrieve_body( $response ) );
if ( ! $body = maybe_unserialize( $body ) )
return false;
if ( ! isset( $body['offers'] ) )
return false;
$offers = $body['offers'];
foreach ( $offers as &$offer ) {
foreach ( $offer as $offer_key => $value ) {
if ( 'packages' == $offer_key )
$offer['packages'] = (object) array_intersect_key( array_map( 'esc_url', $offer['packages'] ),
array_fill_keys( array( 'full', 'no_content', 'new_bundled', 'partial' ), '' ) );
elseif ( 'download' == $offer_key )
$offer['download'] = esc_url( $value );
else
$offer[ $offer_key ] = esc_html( $value );
}
$offer = (object) array_intersect_key( $offer, array_fill_keys( array( 'response', 'download', 'locale',
'packages', 'current', 'php_version', 'mysql_version', 'new_bundled', 'partial_version' ), '' ) );
}
$updates = new stdClass();
$updates->updates = $offers;
$updates->last_checked = time();
$updates->version_checked = $wp_version;
set_site_transient( 'update_core', $updates);
}
/**
* Check plugin versions against the latest versions hosted on WordPress.org.
*
* The WordPress version, PHP version, and Locale is sent along with a list of
* all plugins installed. Checks against the WordPress server at
* api.wordpress.org. Will only check if WordPress isn't installing.
*
* @package WordPress
* @since 2.3.0
* @uses $wp_version Used to notify the WordPress version.
*
* @return mixed Returns null if update is unsupported. Returns false if check is too soon.
*/
function wp_update_plugins() {
include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version
if ( defined('WP_INSTALLING') )
return false;
// If running blog-side, bail unless we've not checked in the last 12 hours
if ( !function_exists( 'get_plugins' ) )
require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
$plugins = get_plugins();
$active = get_option( 'active_plugins', array() );
$current = get_site_transient( 'update_plugins' );
if ( ! is_object($current) )
$current = new stdClass;
$new_option = new stdClass;
$new_option->last_checked = time();
$timeout = 'load-plugins.php' == current_filter() ? 3600 : 43200; //Check for updated every 60 minutes if hitting the themes page, Else, check every 12 hours
$time_not_changed = isset( $current->last_checked ) && $timeout > ( time() - $current->last_checked );
$plugin_changed = false;
foreach ( $plugins as $file => $p ) {
$new_option->checked[ $file ] = $p['Version'];
if ( !isset( $current->checked[ $file ] ) || strval($current->checked[ $file ]) !== strval($p['Version']) )
$plugin_changed = true;
}
if ( isset ( $current->response ) && is_array( $current->response ) ) {
foreach ( $current->response as $plugin_file => $update_details ) {
if ( ! isset($plugins[ $plugin_file ]) ) {
$plugin_changed = true;
break;
}
}
}
// Bail if we've checked in the last 12 hours and if nothing has changed
if ( $time_not_changed && !$plugin_changed )
return false;
// Update last_checked for current to prevent multiple blocking requests if request hangs
$current->last_checked = time();
set_site_transient( 'update_plugins', $current );
$to_send = (object) compact('plugins', 'active');
$options = array(
'timeout' => ( ( defined('DOING_CRON') && DOING_CRON ) ? 30 : 3),
'body' => array( 'plugins' => serialize( $to_send ) ),
'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )
);
$raw_response = wp_remote_post('http://api.wordpress.org/plugins/update-check/1.0/', $options);
if ( is_wp_error( $raw_response ) || 200 != wp_remote_retrieve_response_code( $raw_response ) )
return false;
$response = unserialize( wp_remote_retrieve_body( $raw_response ) );
if ( false !== $response )
$new_option->response = $response;
else
$new_option->response = array();
set_site_transient( 'update_plugins', $new_option );
}
/**
* Check theme versions against the latest versions hosted on WordPress.org.
*
* A list of all themes installed in sent to WP. Checks against the
* WordPress server at api.wordpress.org. Will only check if WordPress isn't
* installing.
*
* @package WordPress
* @since 2.7.0
* @uses $wp_version Used to notify the WordPress version.
*
* @return mixed Returns null if update is unsupported. Returns false if check is too soon.
*/
function wp_update_themes() {
include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version
if ( defined( 'WP_INSTALLING' ) )
return false;
if ( !function_exists( 'get_themes' ) )
require_once( ABSPATH . 'wp-includes/theme.php' );
$installed_themes = get_themes( );
$last_update = get_site_transient( 'update_themes' );
if ( ! is_object($last_update) )
$last_update = new stdClass;
$timeout = 'load-themes.php' == current_filter() ? 3600 : 43200; //Check for updated every 60 minutes if hitting the themes page, Else, check every 12 hours
$time_not_changed = isset( $last_update->last_checked ) && $timeout > ( time( ) - $last_update->last_checked );
$themes = array();
$checked = array();
$exclude_fields = array('Template Files', 'Stylesheet Files', 'Status', 'Theme Root', 'Theme Root URI', 'Template Dir', 'Stylesheet Dir', 'Description', 'Tags', 'Screenshot');
// Put slug of current theme into request.
$themes['current_theme'] = get_option( 'stylesheet' );
foreach ( (array) $installed_themes as $theme_title => $theme ) {
$themes[$theme['Stylesheet']] = array();
$checked[$theme['Stylesheet']] = $theme['Version'];
$themes[$theme['Stylesheet']]['Name'] = $theme['Name'];
$themes[$theme['Stylesheet']]['Version'] = $theme['Version'];
foreach ( (array) $theme as $key => $value ) {
if ( !in_array($key, $exclude_fields) )
$themes[$theme['Stylesheet']][$key] = $value;
}
}
$theme_changed = false;
foreach ( $checked as $slug => $v ) {
$update_request->checked[ $slug ] = $v;
if ( !isset( $last_update->checked[ $slug ] ) || strval($last_update->checked[ $slug ]) !== strval($v) )
$theme_changed = true;
}
if ( isset ( $last_update->response ) && is_array( $last_update->response ) ) {
foreach ( $last_update->response as $slug => $update_details ) {
if ( ! isset($checked[ $slug ]) ) {
$theme_changed = true;
break;
}
}
}
if ( $time_not_changed && !$theme_changed )
return false;
// Update last_checked for current to prevent multiple blocking requests if request hangs
$last_update->last_checked = time();
set_site_transient( 'update_themes', $last_update );
$options = array(
'timeout' => ( ( defined('DOING_CRON') && DOING_CRON ) ? 30 : 3),
'body' => array( 'themes' => serialize( $themes ) ),
'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )
);
$raw_response = wp_remote_post( 'http://api.wordpress.org/themes/update-check/1.0/', $options );
if ( is_wp_error( $raw_response ) || 200 != wp_remote_retrieve_response_code( $raw_response ) )
return false;
$new_update = new stdClass;
$new_update->last_checked = time( );
$new_update->checked = $checked;
$response = unserialize( wp_remote_retrieve_body( $raw_response ) );
if ( false !== $response )
$new_update->response = $response;
set_site_transient( 'update_themes', $new_update );
}
function _maybe_update_core() {
include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version
$current = get_site_transient( 'update_core' );
if ( isset( $current->last_checked ) &&
43200 > ( time() - $current->last_checked ) &&
isset( $current->version_checked ) &&
$current->version_checked == $wp_version )
return;
wp_version_check();
}
/**
* Check the last time plugins were run before checking plugin versions.
*
* This might have been backported to WordPress 2.6.1 for performance reasons.
* This is used for the wp-admin to check only so often instead of every page
* load.
*
* @since 2.7.0
* @access private
*/
function _maybe_update_plugins() {
$current = get_site_transient( 'update_plugins' );
if ( isset( $current->last_checked ) && 43200 > ( time() - $current->last_checked ) )
return;
wp_update_plugins();
}
/**
* Check themes versions only after a duration of time.
*
* This is for performance reasons to make sure that on the theme version
* checker is not run on every page load.
*
* @since 2.7.0
* @access private
*/
function _maybe_update_themes( ) {
$current = get_site_transient( 'update_themes' );
if ( isset( $current->last_checked ) && 43200 > ( time( ) - $current->last_checked ) )
return;
wp_update_themes();
}
/**
* Schedule core, theme, and plugin update checks.
*
* @since 3.1.0
*/
function wp_schedule_update_checks() {
if ( !wp_next_scheduled('wp_version_check') && !defined('WP_INSTALLING') )
wp_schedule_event(time(), 'twicedaily', 'wp_version_check');
if ( !wp_next_scheduled('wp_update_plugins') && !defined('WP_INSTALLING') )
wp_schedule_event(time(), 'twicedaily', 'wp_update_plugins');
if ( !wp_next_scheduled('wp_update_themes') && !defined('WP_INSTALLING') )
wp_schedule_event(time(), 'twicedaily', 'wp_update_themes');
}
if ( ! is_main_site() )
return;
add_action( 'admin_init', '_maybe_update_core' );
add_action( 'wp_version_check', 'wp_version_check' );
add_action( 'load-plugins.php', 'wp_update_plugins' );
add_action( 'load-update.php', 'wp_update_plugins' );
add_action( 'load-update-core.php', 'wp_update_plugins' );
add_action( 'admin_init', '_maybe_update_plugins' );
add_action( 'wp_update_plugins', 'wp_update_plugins' );
add_action( 'load-themes.php', 'wp_update_themes' );
add_action( 'load-update.php', 'wp_update_themes' );
add_action( 'load-update-core.php', 'wp_update_themes' );
add_action( 'admin_init', '_maybe_update_themes' );
add_action( 'wp_update_themes', 'wp_update_themes' );
add_action('init', 'wp_schedule_update_checks');
?>