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<?php
/**
* Automatic Updater Class
*
* Receive updates for plugins and themes on-the-fly from
* self-hosted repositories using the WordPress Updates API.
*
* @package KM_Updates
* @since 4.6.3
* @author John Gera
* @copyright Copyright (c) 2013 John Gera, George Krupa, and Kreatura Media Kft.
* @license http://codecanyon.net/licenses/faq Envato marketplace licenses
*/
class KM_UpdatesV3 {
/**
* Repository API version
*/
const API_VERSION = 3;
/**
* Adds additional one minute caching between WP API calls
* to prevent parallel requests of self-hosted repository.
*/
const TIMEOUT = 60;
/**
* @var array $config Stores API an plugin details
* @access protected
*/
protected $config;
/**
* @var object $data Received update data.
* @access protected
*/
protected $data;
/**
* Init class and set up config for update checking
*
* @since 4.6.3
* @access public
* @param array $config Config for setting up auto updates
* @return void
*/
public function __construct($config = array()) {
// Get and check params
extract($config, EXTR_SKIP);
if(!isset($repoUrl, $root, $version, $itemID, $codeKey, $authKey, $channelKey)) {
wp_die('Missing params in $config for KM_Updates constructor');
}
// Bug fix in v5.3.0: WPLANG is not always defined
if(!defined('WPLANG')) { define('WPLANG', ''); }
// Build config
$this->config = array_merge($config, array(
'slug' => basename(dirname($config['root'])),
'base' => plugin_basename($config['root']),
'channel' => get_option($config['channelKey'], 'stable'),
'license' => get_option($config['codeKey'], ''),
'domain' => $_SERVER['SERVER_NAME'],
'option' => strtolower(basename(dirname($config['root']))) . '_update_info',
'locale' => WPLANG
));
}
/**
* Adds self-hosted updates for site transients.
*
* @since 4.6.3
* @access public
* @param object $transient WP plugin updates site transient
* @return object $transient WP plugin updates site transient
*/
public function set_update_transient($transient) {
$this->_check_updates();
if(!isset($transient)) {
$transient = new stdClass;
}
if(!isset($transient->response)) {
$transient->response = array();
}
if(!empty($this->data->basic) && is_object($this->data->basic)) {
if(version_compare($this->config['version'], $this->data->basic->version, '<')) {
$this->data->basic->new_version = $this->data->basic->version;
$transient->response[$this->config['base']] = $this->data->basic;
}
} else {
unset($transient->response[$this->config['base']]);
}
return $transient;
}
/**
* Adds self-hosted updates for WP Updates API.
*
* @since 4.6.3
* @access public
* @param object $result Result object containing update info
* @param string $action WP Updates API action
* @param object $args Object containing additional information
* @return object $result Result object containing update info
*/
public function set_updates_api_results($result, $action, $args) {
$this->_check_updates();
if(isset($args->slug) && $args->slug == $this->config['slug'] && $action == 'plugin_information') {
if(is_object($this->data->full) && !empty($this->data->full)) {
$result = $this->data->full;
}
}
return $result;
}
/**
* Check for update info.
*
* @since 4.6.3
* @access protected
* @return void
*/
protected function _check_updates() {
// Get data
if(empty($this->data)) {
$data = get_option($this->config['option'], false);
$data = $data ? $data : new stdClass;
$this->data = is_object($data) ? $data : maybe_unserialize($data);
}
// Just installed
if(!isset($this->data->checked)) {
$this->data->checked = time();
}
// Check for updates
if($this->data->checked < time() - self::TIMEOUT) {
$response = $this->sendApiRequest($this->config['repoUrl'].'updates/');
if(!empty($response) && $newData = maybe_unserialize($response)) {
if(is_object($newData)) {
$this->data = $newData;
$this->data->checked = time();
}
}
// Store version number of the latest release
// to notify unauthorized sites owners
if(!empty($this->data->_latest_version)) {
update_option('ls-latest-version', $data->_latest_version);
}
}
// Save results
update_option($this->config['option'], $this->data);
}
/**
* Retrieves API method info from self-hosted repository.
*
* @since 4.6.3
* @access protected
* @param string $url API URL to be called
* @return string API response
*/
protected function sendApiRequest($url) {
if(empty($url)) { return false; }
// Build request
$request = wp_remote_post($url, array(
'user-agent' => 'WordPress/'.$GLOBALS['wp_version'].'; '.get_bloginfo('url'),
'body' => array(
'slug' => $this->config['slug'],
'version' => $this->config['version'],
'channel' => $this->config['channel'],
'license' => $this->config['license'],
'item_id' => $this->config['itemID'],
'domain' => $this->config['domain'],
'locale' => $this->config['locale'],
'api_version' => self::API_VERSION
)
));
return wp_remote_retrieve_body($request);
}
/**
* Parses JSON API responses
*
* @since 4.6.3
* @access protected
* @param string $response JSON string to be parsed
* @return array Array of the raw and parsed JSON
*/
public function parseApiResponse($response) {
// Get response
$json = !empty($response) ? json_decode($response) : false;
// ERR: Unexpected error
if(empty($json)) {
die(json_encode(array(
'message' => 'An unexpected error occurred. Please try again later.',
'errCode' => 'ERR_UNEXPECTED_ERROR')
));
}
return array($response, $json);
}
/**
* Handles repository authorization and saving auto-update settings
*
* @since 4.6.3
* @access public
* @return string JSON string of authorization status data
*/
public function handleActivation() {
// Required informations
if(empty($_POST['purchase_code']) || empty($_POST['channel'])) {
die(json_encode(array(
'status' => 'Please enter your purchase code.',
'errCode' => 'ERR_INVALID_DATA_RECEIVED')
));
}
// Re-validation
if(get_option('layerslider-validated', null) === '1' && !empty($this->config['license']) && get_option('layerslider-authorized-site', null) === null) {
$_POST['purchase_code'] = $this->config['license'];
}
// Save release channel
update_option($this->config['channelKey'], $_POST['channel']);
// Only update release channel?
if(get_option($this->config['authKey'], false)) {
if( strpos($_POST['purchase_code'], '●') === 0 || $this->config['license'] == $_POST['purchase_code']) {
die(json_encode(array('status' => __('Your settings were successfully saved.', 'LayerSlider'))));
}
}
// Validate purchase
$this->config['license'] = $_POST['purchase_code'];
$data = $this->sendApiRequest($this->config['repoUrl'].'authorize/');
list($response, $json) = $this->parseApiResponse($data);
// Failed authorization
if(!empty($json->errCode)) {
update_option($this->config['authKey'], 0);
update_option($this->config['codeKey'], '');
// Successful authorization
} else {
update_option($this->config['authKey'], 1);
update_option($this->config['codeKey'], $_POST['purchase_code']);
}
die($response);
}
/**
* Handles repository deauthorization
*
* @since 4.6.3
* @access public
* @return string JSON string of deauthorization status data
*/
public function handleDeactivation() {
// Get response
$data = $this->sendApiRequest($this->config['repoUrl'].'deauthorize/');
list($response, $json) = $this->parseApiResponse($data);
// Deauthorize
delete_option($this->config['codeKey']);
delete_option($this->config['authKey']);
die($response);
}
}
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