/**
* Searches the Plugin repositories for a given plugin
*
* @param string $pluginfile the name of the plugin file
* @param bool $skipcache If the cache'd values should be ignored
* @param bool $forcecheck To Check for the update NOW, or to leave it
* @return array the Plugin update information on success, array of errors on failure
*/
function checkPluginUpdate($pluginfile = false, $skipcache = false, $forcecheck = false)
{
// Does the file exist
if (!$pluginfile) {
return array('Errors' => array('Invalid File'));
}
$pluginUpdateInfo = false;
//If cached requests are allowed, retrieve it
if (!$skipcache) {
$pluginUpdateInfo = wp_cache_get('wpupdate_' . $pluginfile, 'wpupdate');
if (!$pluginUpdateInfo) {
//Check for the Option being set.
$pluginUpdateInfo = get_option('wpupdate_' . $pluginfile);
if ($pluginUpdateInfo) {
if ($pluginUpdateInfo['Expire'] + $pluginUpdateInfo['LastChecked'] > time()) {
//Check it hasnt expired (wp_cache handled expires in that case)
$pluginUpdateInfo = false;
}
}
}
// end if ! $pluginUpdateInfo
}
//end if $skipcache
//If no data is available, And we're not forcing a check, return an error
if (!$pluginUpdateInfo && !$forcecheck) {
return array('Errors' => array('Not Cached'));
}
//Get the fields from the plugin file.
$pluginData = wpupdate_get_plugin_data(ABSPATH . PLUGINDIR . '/' . $pluginfile);
//If no Update info, or we're forcing a recheck
if (!$pluginUpdateInfo || $forcecheck) {
$pluginData['Update'] = apply_filters('wpupdate_update-url', $pluginData['Update'], $pluginData);
if (!empty($pluginData['Update'])) {
//We have a custom update URL.
$pluginUpdateInfo = $this->checkPluginUpdateCustom($pluginData['Update']);
}
//Else, We check the plugin searches (not } else { as the custom update url may fail)
if (!$pluginUpdateInfo && get_option('update_location_search')) {
//Find the plugin:
$plugins = $this->search('plugins', $pluginData['Name']);
if (!empty($plugins)) {
foreach ((array) $plugins['results'] as $result) {
if (0 === strcasecmp($result['Name'], $pluginData['Name'])) {
//return information:
$pluginUpdateInfo = $this->checkPluginUpdateURL($result['UpdateURL']);
break;
}
}
}
}
//end get_option('update_location_search')
//Update cache:
//If Expire is not set, or Expire is not valid
if (!empty($pluginUpdateInfo) && (!isset($pluginUpdateInfo['Expire']) || !is_numeric($pluginUpdateInfo['Expire']))) {
$pluginUpdateInfo['Expire'] = 7 * 24 * 60 * 60;
}
//If no update info is available, we cant find it.
if (empty($pluginUpdateInfo)) {
$pluginUpdateInfo = array('Errors' => array('Not Found'), 'Expire' => 7 * 24 * 60 * 60);
}
//,'(Will check again in 1 week)'
$pluginUpdateInfo['LastChecked'] = time();
wp_cache_set('wpupdate_' . $pluginfile, $pluginUpdateInfo, 'wpupdate', $pluginUpdateInfo['Expire']);
if (false !== get_option('update_' . $pluginfile)) {
update_option('update_' . $pluginfile, $pluginUpdateInfo);
} else {
add_option('update_' . $pluginfile, $pluginUpdateInfo, sprintf(__('Update Information for %s'), $pluginfile), 'no');
}
//We dont want to autoload this for every page, Reduce memory usage exept when needed.
}
//If Erorrs are set, it means we hit a snag in the update check process which has prevented checking.
if (isset($pluginUpdateInfo['Errors'])) {
return array('Errors' => $pluginUpdateInfo['Errors']);
}
//If no Plugin data available, Or the Plugin version is not specified, we cant do anything for the plugin.
if (!$pluginUpdateInfo || !$pluginUpdateInfo['Version']) {
return array('Errors' => array('Not Compatible', __('(No Version specified on update page)')));
}
$pluginUpdateInfo = apply_filters('wpupdate_plugin-updateinfo-' . $pluginUpdateInfo, $pluginUpdateInfo);
if (version_compare($pluginUpdateInfo['Version'], $pluginData['Version'], '>')) {
//Theres a new version available!, Now, Check its Requirements.
return array_merge($this->checkPluginCompatible($pluginUpdateInfo), array('Update' => true, 'Version' => $pluginUpdateInfo['Version'], 'PluginInfo' => $pluginUpdateInfo));
} else {
//The currently installed version is the latest availaable.
return array('Update' => false);
}
}
<?php
if (!defined('ABSPATH') || !$wp_update) {
die('Cannot be called directly.');
}
check_admin_referer('wpupdate-upgrade-plugin');
require_once 'includes/wp-update-filesystem.php';
$installedInfo = wpupdate_get_plugin_data(ABSPATH . PLUGINDIR . '/' . $_GET['upgrade']);
$action = array();
foreach ($_GET as $key => $val) {
$action[] = $key . '=' . urlencode($val);
}
?>
<form action="<?php
echo $pagenow . '?' . implode('&', $action);
?>
" method="post">
<?php
wp_nonce_field('wpupdate-upgrade-plugin');
$opt = array();
//Options for the filesystem.
if (isset($_POST['required'])) {
if (!empty($_POST['required'])) {
foreach ((array) $_POST['required'] as $key => $value) {
echo '<input type="hidden" name="required[' . $key . ']" value="' . attribute_escape($value) . '" />';
$opt[$key] = $value;
}
}
}
global $wp_filesystem;
if (!$wp_filesystem || !is_object($wp_filesystem)) {
/**
* mofidied version of get_plugins(), few performance increases
*
* @param string $plugin_root the basedirectory to look for plugins in, Defaults to '' which is ABSPATH . PLUGINDIR
* @return array of plugin metadatas.
*/
function wpupdate_get_plugins($plugin_root = '')
{
global $wp_plugins;
if (isset($wp_plugins)) {
return $wp_plugins;
}
$wp_plugins = array();
if (empty($plugin_root)) {
$plugin_root = ABSPATH . PLUGINDIR;
}
// Files in wp-content/plugins directory
$plugins_dir = @dir($plugin_root);
if ($plugins_dir) {
while (($file = $plugins_dir->read()) !== false) {
if ('.' == $file || '..' == $file) {
continue;
}
if (is_dir($plugin_root . '/' . $file)) {
$plugins_subdir = @dir($plugin_root . '/' . $file);
if ($plugins_subdir) {
while (($subfile = $plugins_subdir->read()) !== false) {
if (preg_match('|\\.php$|', $subfile)) {
$plugin_files[] = "{$file}/{$subfile}";
}
}
}
} else {
if (preg_match('|\\.php$|', $file)) {
$plugin_files[] = $file;
}
}
}
}
if (!$plugins_dir || !$plugin_files) {
return $wp_plugins;
}
foreach ($plugin_files as $plugin_file) {
$plugin_data = wpupdate_get_plugin_data("{$plugin_root}/{$plugin_file}");
if (empty($plugin_data) || empty($plugin_data['Name'])) {
continue;
}
$wp_plugins[plugin_basename($plugin_file)] = $plugin_data;
}
uasort($wp_plugins, create_function('$a, $b', 'return strnatcasecmp( $a["Name"], $b["Name"] );'));
return $wp_plugins;
}
