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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.
*/
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'], '' ),
'activation_id' => get_option( $config['activationKey'], '' ),
'domain' => $_SERVER['SERVER_NAME'],
'siteurl' => esc_url( site_url() ),
'option' => strtolower( basename( dirname( $config['root'] ) ) ) . '_update_info',
'locale' => get_locale()
));
}
/**
* 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) {
$this->_check_updates();
if( empty($transient) || ! is_object($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 and handle activation before downloading the update file.
*
* @since 6.0.0
* @access public
* @param bool $reply Whether to bail without returning the package. Default false.
* @param string $package The package file name.
* @param WP_Upgrader $this The WP_Upgrader instance.
* @return mixed $result void or WP_error on failure
*/
public function pre_download_filter($reply, $package, $updater) {
$skin = $updater->skin;
// Filter out 3rd party items
if( ( isset( $skin->plugin ) && $skin->plugin === $this->config['base'] ) ||
( isset( $skin->plugin_info ) && $skin->plugin_info['Name'] === $this->config['name'] ) ) {
// Check validity
if( LS_Config::get('autoupdate') && ! LS_Config::isActivatedSite() ) {
return new WP_Error('ls_update_error', sprintf(
__('License activation is required to receive updates. Please read our %sonline documentation%s to learn more.', 'LayerSlider'),
'<a href="https://layerslider.kreaturamedia.com/documentation/#activation" target="_blank">',
'</a>')
);
}
}
return $reply;
}
/**
* Provide an update message in the Plugins list row.
*
* @since 6.1.5
* @access public
* @return string The update message
*/
public function update_message() {
// Provide license activation warning on non-activated sites
if( ! LS_Config::isActivatedSite() ) {
printf(__('License activation is required in order to receive updates for LayerSlider. %sPurchase a license%s or %sread the documentation%s to learn more. %sGot LayerSlider in a theme?%s', 'installer'),
'<a href="'.LS_Config::get('purchase_url').'" target="_blank">', '</a>', '<a href="https://layerslider.kreaturamedia.com/documentation/#activation" target="_blank">', '</a>', '<a href="https://layerslider.kreaturamedia.com/documentation/#activation-bundles" target="_blank">', '</a>');
}
}
/**
* In case of receiving a "Not activated" flag, make sure to display
* the "Canceled activation" notification to let users know about
* potential issues if their site is still in an activated state.
*
* This usually happens due to remote deactivation via our online tools,
* or because users ask us to reset their license key on their behalf.
* Alternatively, the purhcase code might no longer be valid due to a
* refund, sale reversal, or any other reason.
*
* @since 6.1.5
* @access public
*/
public function check_activation_state() {
if( LS_Config::isActivatedSite() ) {
delete_option( $this->config['codeKey'] );
delete_option( $this->config['authKey'] );
delete_option( $this->config['activationKey'] );
update_option( 'ls-show-canceled_activation_notice', 1 );
update_option( 'layerslider_cancellation_update_info', $this->data );
}
}
/**
* Check for update info.
*
* @since 4.6.3
* @access protected
* @param boolean $forceCheck Ignore the update interval and force refreshing update info
* @return void
*/
protected function _check_updates( $forceCheck = false ) {
// Get data
if(empty($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( $forceCheck || $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 site owners
if( ! empty( $this->data->_latest_version ) ) {
update_option('ls-latest-version', $this->data->_latest_version);
}
// Check activation state on client side in
// case of receiving a "Not Activated" flag
if( ! empty( $this->data->_not_activated ) ) {
$this->check_activation_state();
}
// Use activation_id when
if( empty( $this->config['activation_id'] ) ) {
if( ! empty( $this->data->activation_id ) ) {
update_option( $this->config['activationKey'], $this->data->activation_id );
}
}
if( ! empty( $this->data->full->p_url ) ) {
update_option('ls-p-url', $this->data->full->p_url );
} else {
delete_option('ls-p-url');
}
}
// Save results
update_option($this->config['option'], $this->data);
}
/**
* Retrieves API method info from self-hosted repository.
*
* @since 4.6.3
* @access protected
* @param string $url API URL to be called
* @return string API response
*/
public function sendApiRequest($url) {
if(empty($url)) { return false; }
// Build request
$request = wp_remote_post($url, array(
'method' => 'POST',
'timeout' => 60,
'user-agent' => 'WordPress/'.$GLOBALS['wp_version'].'; '.get_bloginfo('url'),
'body' => array(
'slug' => $this->config['slug'],
'base' => $this->config['base'],
'version' => $this->config['version'],
'channel' => $this->config['channel'],
'license' => $this->config['license'],
'activation_id' => $this->config['activation_id'],
'item_id' => $this->config['itemID'],
'domain' => $this->config['domain'],
'siteurl' => $this->config['siteurl'],
'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. If this error persist, it’s most likely a web server configuration issue. Please contact your web host and ask them to allow external connection to the following domain: repository.kreaturamedia.com. If you need further assistance in resolving this issue, please visit layerslider.kreaturamedia.com/help/',
'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( $_POST['channel'] ) ) {
die( json_encode( array(
'status' => 'Please enter your license key.',
'errCode' => 'ERR_INVALID_DATA_RECEIVED')
) );
}
// Re-validation
if(get_option('layerslider-validated', null) === '1' && !empty($this->config['license']) && get_option('layerslider-authorized-site', null) === null) {
$_POST['purchase_code'] = $this->config['license'];
}
// Save release channel
update_option($this->config['channelKey'], $_POST['channel']);
// Only update release channel?
if( LS_Config::isActivatedSite() ) {
if( strpos($_POST['purchase_code'], '●') === 0 || $this->config['license'] == $_POST['purchase_code']) {
die(json_encode(array('message' => __('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'], '' );
update_option( $this->config['activationKey'], '' );
// Successful authorization
} else {
$json->code = base64_encode( $_POST['purchase_code'] );
update_option( $this->config['authKey'], 1 );
update_option( $this->config['codeKey'], $_POST['purchase_code'] );
update_option( $this->config['activationKey'], $json->activation_id );
// v6.1.5: Make sure to empty the stored update data from cache,
// so we can avoid issues caused by outdated and potentially
// unreliable information like special flags set by the update server.
//
// Force checking updates to immediately replace the missing update info
// with fresh data. Suppressing error reporting to make sure that nothing
// can break the JSON output, as user feedback is crucial here.
delete_option( $this->config['option'] );
@$this->_check_updates( true );
// v6.2.0: Automatically hide the "Canceled activation" notice when
// re-activating the plugin for the sake of clarity and consistency.
update_option( 'ls-show-canceled_activation_notice', 0 );
// v6.6.3: Empty slider caches (if any) to immediately hide the premium
// notice displayed above sliders on the front-end after activation.
layerslider_delete_caches();
}
die( json_encode( $json ) );
}
/**
* 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'] );
delete_option( $this->config['activationKey'] );
// v6.6.3: Empty slider caches (if any) to re-enable displaying the premium
// notice above sliders on the front-end after deactivation.
layerslider_delete_caches();
die($response);
}
}