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<?php
/**
* A simple set of functions to check our version 1.0 update service
*
* @package WordPress
* @since 2.3
*/
/**
* wp_version_check() - 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. Will only check if PHP has fsockopen enabled and WordPress isn't installing.
*
* @package WordPress
* @since 2.3
* @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 ( !function_exists('fsockopen') || defined('WP_INSTALLING') )
return;
global $wp_version, $wpmu_version, $current_site;
$php_version = phpversion();
$current = get_site_option( 'update_core' );
$locale = get_locale();
if (
isset( $current->last_checked ) &&
43200 > ( time() - $current->last_checked ) &&
$current->version_checked == $wpmu_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 = $wpmu_version;
$http_request = "GET /core/version-check/1.1/?version=$wp_version&wpmuversion=$wpmu_version&php=$php_version&locale=$locale&blogs=" . get_blog_count() . " HTTP/1.0\r\n";
$http_request .= "Host: api.wordpress.org\r\n";
$http_request .= 'Content-Type: application/x-www-form-urlencoded; charset=' . get_option('blog_charset') . "\r\n";
$http_request .= 'User-Agent: WordPress MU/' . $wpmu_version . '; ' . apply_filters( 'currentsite_on_version_check', 'http://' . $current_site->domain . $current_site->path ) . "\r\n";
$http_request .= "\r\n";
$response = '';
if ( false !== ( $fs = @fsockopen( 'api.wordpress.org', 80, $errno, $errstr, 3 ) ) && is_resource($fs) ) {
fwrite( $fs, $http_request );
while ( !feof( $fs ) )
$response .= fgets( $fs, 1160 ); // One TCP-IP packet
fclose( $fs );
$response = explode("\r\n\r\n", $response, 2);
if ( !preg_match( '|HTTP/.*? 200|', $response[0] ) )
return false;
$body = trim( $response[1] );
$body = str_replace(array("\r\n", "\r"), "\n", $body);
$returns = explode("\n", $body);
$new_option->response = attribute_escape( $returns[0] );
if ( isset( $returns[1] ) )
$new_option->url = 'http://mu.wordpress.org/';
if ( isset( $returns[2] ) )
$new_option->current = attribute_escape( $returns[2] );
}
update_site_option( 'update_core', $new_option );
}
add_action( 'init', 'wp_version_check' );
/**
* wp_update_plugins() - 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 PHP has fsockopen enabled and WordPress isn't installing.
*
* @package WordPress
* @since 2.3
* @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 ( !function_exists('fsockopen') || 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;
}
foreach ( (array) $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 );
$request = 'plugins=' . urlencode( $send );
$http_request = "POST /plugins/update-check/1.0/ HTTP/1.0\r\n";
$http_request .= "Host: api.wordpress.org\r\n";
$http_request .= "Content-Type: application/x-www-form-urlencoded; charset=" . get_option('blog_charset') . "\r\n";
$http_request .= "Content-Length: " . strlen($request) . "\r\n";
$http_request .= 'User-Agent: WordPress/' . $wp_version . '; ' . get_bloginfo('url') . "\r\n";
$http_request .= "\r\n";
$http_request .= $request;
$response = '';
if( false != ( $fs = @fsockopen( 'api.wordpress.org', 80, $errno, $errstr, 3) ) && is_resource($fs) ) {
fwrite($fs, $http_request);
while ( !feof($fs) )
$response .= fgets($fs, 1160); // One TCP-IP packet
fclose($fs);
$response = explode("\r\n\r\n", $response, 2);
}
$response = unserialize( $response[1] );
if ( $response )
$new_option->response = $response;
update_option( 'update_plugins', $new_option );
}
function _maybe_update_plugins() {
$current = get_option( 'update_plugins' );
if ( isset( $current->last_checked ) && 43200 > ( time() - $current->last_checked ) )
return;
wp_update_plugins();
}
add_action( 'load-plugins.php', 'wp_update_plugins' );
add_action( 'admin_init', '_maybe_update_plugins' );
add_action( 'wp_update_plugins', 'wp_update_plugins' );
if ( !wp_next_scheduled('wp_update_plugins') )
wp_schedule_event(time(), 'twicedaily', 'wp_update_plugins');
?>
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