WordPress/wp-includes/update.php

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<?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 $wp_version, $wpdb, $wp_local_package;
$php_version = phpversion();
$current = get_option( 'update_core' );
$locale = get_locale();
if (
isset( $current->last_checked ) &&
43200 > ( time() - $current->last_checked ) &&
$current->version_checked == $wp_version
)
return false;
$new_option = '';
$new_option->last_checked = time(); // this gets set whether we get a response or not, so if something is down or misconfigured it won't delay the page load for more than 3 seconds, twice a day
$new_option->version_checked = $wp_version;
if ( method_exists( $wpdb, 'db_version' ) )
$mysql_version = preg_replace('/[^0-9.].*/', '', $wpdb->db_version($wpdb->users));
else
$mysql_version = 'N/A';
$local_package = isset( $wp_local_package )? $wp_local_package : '';
$url = "http://api.wordpress.org/core/version-check/1.3/?version=$wp_version&php=$php_version&locale=$locale&mysql=$mysql_version&local_package=$local_package";
$options = array('timeout' => 3);
$options['headers'] = array(
'Content-Type' => 'application/x-www-form-urlencoded; charset=' . get_option('blog_charset'),
'User-Agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo('url')
);
$response = wp_remote_request($url, $options);
if ( is_wp_error( $response ) )
return false;
if ( 200 != $response['response']['code'] )
return false;
$body = trim( $response['body'] );
$body = str_replace(array("\r\n", "\r"), "\n", $body);
$new_options = array();
foreach( explode( "\n\n", $body ) as $entry) {
$returns = explode("\n", $entry);
$new_option = new stdClass();
$new_option->response = attribute_escape( $returns[0] );
if ( isset( $returns[1] ) )
$new_option->url = clean_url( $returns[1] );
if ( isset( $returns[2] ) )
$new_option->package = clean_url( $returns[2] );
if ( isset( $returns[3] ) )
$new_option->current = attribute_escape( $returns[3] );
if ( isset( $returns[4] ) )
$new_option->locale = attribute_escape( $returns[4] );
$new_options[] = $new_option;
}
$updates = new stdClass();
$updates->updates = $new_options;
$updates->last_checked = time();
$updates->version_checked = $wp_version;
update_option( 'update_core', $updates);
}
add_action( 'init', 'wp_version_check' );
/**
* 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 notidy the WordPress version.
*
* @return mixed Returns null if update is unsupported. Returns false if check is too soon.
*/
function wp_update_plugins() {
global $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' );
$current = get_option( 'update_plugins' );
$new_option = '';
$new_option->last_checked = time();
$time_not_changed = isset( $current->last_checked ) && 43200 > ( time() - $current->last_checked );
$plugin_changed = false;
foreach ( $plugins as $file => $p ) {
$new_option->checked[ $file ] = $p['Version'];
if ( !isset( $current->checked[ $file ] ) ) {
$plugin_changed = true;
continue;
}
if ( strval($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;
}
}
}
// Bail if we've checked in the last 12 hours and if nothing has changed
if ( $time_not_changed && !$plugin_changed )
return false;
$to_send->plugins = $plugins;
$to_send->active = $active;
$send = serialize( $to_send );
$body = 'plugins=' . urlencode( $send );
$options = array('method' => 'POST', 'timeout' => 3, 'body' => $body);
$options['headers'] = array(
'Content-Type' => 'application/x-www-form-urlencoded; charset=' . get_option('blog_charset'),
'Content-Length' => strlen($body),
'User-Agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo('url')
);
$raw_response = wp_remote_request('http://api.wordpress.org/plugins/update-check/1.0/', $options);
if ( is_wp_error( $raw_response ) )
return false;
if( 200 != $raw_response['response']['code'] ) {
return false;
}
$response = unserialize( $raw_response['body'] );
if ( false !== $response )
$new_option->response = $response;
else
$new_option->response = array();
update_option( '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 notidy the WordPress version.
*
* @return mixed Returns null if update is unsupported. Returns false if check is too soon.
*/
function wp_update_themes( ) {
global $wp_version;
if( defined( 'WP_INSTALLING' ) )
return false;
if( !function_exists( 'get_themes' ) )
require_once( ABSPATH . 'wp-includes/theme.php' );
$installed_themes = get_themes( );
$current_theme = get_option( 'update_themes' );
$new_option = '';
$new_option->last_checked = time( );
$time_not_changed = isset( $current->last_checked ) && 43200 > ( time( ) - $current->last_checked );
if( $time_not_changed )
return false;
$themes = array( );
$themes['current_theme'] = $current_theme;
foreach( (array) $installed_themes as $theme_title => $theme ) {
$themes[$theme['Template']] = array( );
foreach( (array) $theme as $key => $value ) {
$themes[$theme['Template']][$key] = $value;
}
}
$options = array(
'method' => 'POST',
'timeout' => 3,
'body' => 'themes=' . urlencode( serialize( $themes ) )
);
$options['headers'] = array(
'Content-Type' => 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' ),
'Content-Length' => strlen( $options['body'] ),
'User-Agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )
);
$raw_response = wp_remote_request( 'http://api.wordpress.org/themes/update-check/1.0/', $options );
if( is_wp_error( $raw_response ) )
return false;
if( 200 != $raw_response['response']['code'] )
return false;
$response = unserialize( $raw_response['body'] );
if( $response )
$new_option->response = $response;
update_option( 'update_themes', $new_option );
}
/**
* 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_option( '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_option( 'update_themes' );
if( isset( $current->last_checked ) && 43200 > ( time( ) - $current->last_checked ) )
return;
wp_update_themes( );
}
add_action( 'load-plugins.php', 'wp_update_plugins' );
add_action( 'admin_init', '_maybe_update_plugins' );
add_action( 'wp_update_plugins', 'wp_update_plugins' );
add_action( 'admin_init', '_maybe_update_themes' );
add_action( 'wp_update_themes', 'wp_update_themes' );
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');
?>