response ) {
case 'development' :
return sprintf( '| '.__( 'You are using a development version (%s). Cool! Please stay updated.' ), $GLOBALS['wp_version'], 'http://wordpress.org/download/svn/' );
break;
case 'upgrade' :
return sprintf( '| '.__( 'Your WordPress %s is out of date. Please update.' ).'', $GLOBALS['wp_version'], $cur->url );
break;
case 'latest' :
default :
return sprintf( '| '.__( 'Version %s' ), $GLOBALS['wp_version'] );
break;
}
}
add_filter( 'update_footer', 'core_update_footer' );
function update_nag() {
$cur = get_option( 'update_core' );
if ( ! isset( $cur->response ) || $cur->response != 'upgrade' )
return false;
if ( current_user_can('manage_options') )
$msg = sprintf( __('A new version of WordPress is available! Please update now.'), $cur->url );
else
$msg = __('A new version of WordPress is available! Please notify the site administrator.');
echo "$msg
";
}
add_action( 'admin_notices', 'update_nag', 3 );
function wp_update_plugins() {
global $wp_version;
if ( !function_exists('fsockopen') )
return false;
$plugins = get_plugins();
$active = get_option( 'active_plugins' );
$current = get_option( 'update_plugins' );
$new_option = '';
$new_option->last_checked = time();
$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->last_checked ) &&
43200 > ( time() - $current->last_checked ) &&
!$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 );
}
add_action( 'load-plugins.php', 'wp_update_plugins' );
function wp_plugin_update_row( $file ) {
global $plugin_data;
$current = get_option( 'update_plugins' );
if ( !isset( $current->response[ $file ] ) )
return false;
$r = $current->response[ $file ];
echo "| ";
printf( __('There is a new version of %1$s available. Download version %3$s here or upgrade automatically.'), $plugin_data['Name'], $r->url, $r->new_version, "update.php?action=upgrade-plugin&plugin=$file" );
echo " |
";
}
add_action( 'after_plugin_row', 'wp_plugin_update_row' );
function wp_update_plugin($plugin, $feedback = '') {
global $wp_filesystem;
if ( !empty($feedback) )
add_filter('update_feedback', $feedback);
// Is an update available?
$current = get_option( 'update_plugins' );
if ( !isset( $current->response[ $plugin ] ) )
return new WP_Error('up_to_date', __('The plugin is at the latest version.'));
// Is a filesystem accessor setup?
if ( ! $wp_filesystem || !is_object($wp_filesystem) )
WP_Filesystem();
if ( ! is_object($wp_filesystem) )
return new WP_Error('fs_unavailable', __('Could not access filesystem.'));
if ( $wp_filesystem->errors->get_error_code() )
return new WP_Error('fs_error', __('Filesystem error'), $wp_filesystem->errors);
//Get the Base folder
$base = $wp_filesystem->get_base_dir();
if ( empty($base) )
return new WP_Error('fs_nowordpress', __('Unable to locate WordPress directory.'));
// Get the URL to the zip file
$r = $current->response[ $plugin ];
if ( empty($r->package) )
return new WP_Error('no_package', __('Upgrade package not available.'));
// Download the package
$package = $r->package;
apply_filters('update_feedback', sprintf(__("Downloading update from %s"), $package));
$file = download_url($package);
if ( !$file )
return new WP_Error('download_failed', __('Download failed.'));
$name = basename($plugin, '.php');
$working_dir = $base . 'wp-content/upgrade/' . $name;
// Clean up working directory
if ( is_dir($working_dir) )
$wp_filesystem->delete($working_dir, true);
apply_filters('update_feedback', __("Unpacking the update"));
// Unzip package to working directory
$result = unzip_file($file, $working_dir);
if ( is_wp_error($result) ) {
unlink($file);
$wp_filesystem->delete($working_dir, true);
return $result;
}
// Once installed, delete the package
unlink($file);
// Remove the existing plugin.
apply_filters('update_feedback', __("Removing the old version of the plugin"));
$plugin_dir = dirname($base . PLUGINDIR . "/$plugin");
$plugin_dir = trailingslashit($plugin_dir);
// If plugin is in its own directory, recursively delete the directory.
if( ! in_array( $plugin_dir, array('.', trailingslashit($base . PLUGINDIR) ) ) )
$deleted = $wp_filesystem->delete($plugin_dir, true);
else
$deleted = $wp_filesystem->delete($base . PLUGINDIR . "/$plugin");
if ( !$deleted ) {
$wp_filesystem->delete($working_dir, true);
return new WP_Error('delete_failed', __('Could not remove the old plugin'));
}
apply_filters('update_feedback', __("Installing the latest version"));
// Copy new version of plugin into place.
if ( !copy_dir($working_dir, $base . PLUGINDIR) ) {
//$wp_filesystem->delete($working_dir, true);
return new WP_Error('install_failed', __('Installation failed'));
}
// Remove working directory
$wp_filesystem->delete($working_dir, true);
// Force refresh of plugin update information
delete_option('update_plugins');
}
?>