WordPress/wp-admin/update.php

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<?php
require_once('admin.php');
if ( ! current_user_can('update_plugins') )
wp_die(__('You do not have sufficient permissions to update plugins for this blog.'));
function do_plugin_upgrade($plugin) {
global $wp_filesystem;
$url = wp_nonce_url("update.php?action=upgrade-plugin&plugin=$plugin", "upgrade-plugin_$plugin");
if ( false === ($credentials = request_filesystem_credentials($url)) )
return;
if ( ! WP_Filesystem($credentials) ) {
request_filesystem_credentials($url, '', true); //Failed to connect, Error and request again
return;
}
echo '<div class="wrap">';
echo '<h2>' . __('Upgrade Plugin') . '</h2>';
if ( $wp_filesystem->errors->get_error_code() ) {
foreach ( $wp_filesystem->errors->get_error_messages() as $message )
show_message($message);
echo '</div>';
return;
}
$was_activated = is_plugin_active($plugin); //Check now, It'll be deactivated by the next line if it is
$result = wp_update_plugin($plugin, 'show_message');
if ( is_wp_error($result) ) {
show_message($result);
show_message( __('Installation Failed') );
} else {
//Result is the new plugin file relative to WP_PLUGIN_DIR
show_message( __('Plugin upgraded successfully') );
if( $result && $was_activated ){
show_message(__('Attempting reactivation of the plugin'));
echo '<iframe style="border:0" width="100%" height="170px" src="' . wp_nonce_url('update.php?action=activate-plugin&plugin=' . $result, 'activate-plugin_' . $result) .'"></iframe>';
}
}
echo '</div>';
}
if ( isset($_GET['action']) ) {
$plugin = isset($_GET['plugin']) ? trim($_GET['plugin']) : '';
if ( 'upgrade-plugin' == $_GET['action'] ) {
check_admin_referer('upgrade-plugin_' . $plugin);
$title = __('Upgrade Plugin');
$parent_file = 'plugins.php';
require_once('admin-header.php');
do_plugin_upgrade($plugin);
include('admin-footer.php');
} elseif ('activate-plugin' == $_GET['action'] ) {
check_admin_referer('activate-plugin_' . $plugin);
if( ! isset($_GET['failure']) && ! isset($_GET['success']) ) {
wp_redirect( 'update.php?action=activate-plugin&failure=true&plugin=' . $plugin . '&_wpnonce=' . $_GET['_wpnonce'] );
activate_plugin($plugin);
wp_redirect( 'update.php?action=activate-plugin&success=true&plugin=' . $plugin . '&_wpnonce=' . $_GET['_wpnonce'] );
die();
}
?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" <?php do_action('admin_xml_ns'); ?> <?php language_attributes(); ?>>
<head>
<meta http-equiv="Content-Type" content="<?php bloginfo('html_type'); ?>; charset=<?php echo get_option('blog_charset'); ?>" />
<title><?php bloginfo('name') ?> &rsaquo; <?php _e('Plugin Reactivation'); ?> &#8212; <?php _e('WordPress'); ?></title>
<?php
wp_admin_css( 'global', true );
wp_admin_css( 'colors', true );
?>
</head>
<body>
<?php
if( isset($_GET['success']) )
echo '<p>' . __('Plugin reactivated successfully.') . '</p>';
if( isset($_GET['failure']) ){
echo '<p>' . __('Plugin failed to reactivate due to a fatal error.') . '</p>';
error_reporting( E_ALL ^ E_NOTICE );
@ini_set('display_errors', true); //Ensure that Fatal errors are displayed.
include(WP_PLUGIN_DIR . '/' . $plugin);
}
echo "</body></html>";
}
}
?>