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<?php
/**
* Add-ons Updater.
*
* @package SimpleCalendar\Admin
*/
namespace SimpleCalendar\Admin;
/**
* Add-ons updater.
*
* @since 3.0.0
*/
class Updater
{
/**
* API Url.
*
* @access private
* @var string
*/
private $api_url = '';
/**
* API data.
*
* @access private
* @var array|null
*/
private $api_data = [];
/**
* Name.
*
* @access private
* @var string
*/
private $name = '';
/**
* Slug.
*
* @access private
* @var string
*/
private $slug = '';
/**
* Version.
*
* @access private
* @var string
*/
private $version = '';
/**
* Constructor.
*
* @since 3.0.0
*
* @param string $_api_url The URL pointing to the custom API endpoint.
* @param string $_plugin_file Path to the plugin file.
* @param array $_api_data Optional data to send with API calls.
*/
public function __construct($_api_url, $_plugin_file, $_api_data = null)
{
$this->api_url = trailingslashit($_api_url);
$this->api_data = $_api_data;
$this->name = plugin_basename($_plugin_file);
$this->slug = basename($_plugin_file, '.php');
$this->version = $_api_data['version'];
// Set up hooks.
$this->init();
add_action('admin_init', [$this, 'show_changelog']);
}
/**
* Hook into WordPress update process.
*
* @since 3.0.0
*
* @return void
*/
public function init()
{
add_filter('pre_set_site_transient_update_plugins', [$this, 'check_update']);
add_filter('plugins_api', [$this, 'plugins_api_filter'], 10, 3);
remove_action('after_plugin_row_' . $this->name, 'wp_plugin_update_row', 10);
add_action('after_plugin_row_' . $this->name, [$this, 'show_update_notification'], 10, 2);
}
/**
* Check for Updates at the defined API endpoint and modify the update array.
*
* This function dives into the update API just when WordPress creates its update array,
* then adds a custom API call and injects the custom plugin data retrieved from the API.
* It is reassembled from parts of the native WordPress plugin update code.
* See wp-includes/update.php line 121 for the original wp_update_plugins() function.
*
* @since 3.0.0
*
* @param array $_transient_data Update array build by WordPress.
*
* @return array|\stdClass Modified update array with custom plugin data.
*/
public function check_update($_transient_data)
{
global $pagenow;
if (!is_object($_transient_data)) {
$_transient_data = new \stdClass();
}
if ('plugins.php' == $pagenow && is_multisite()) {
return $_transient_data;
}
if (empty($_transient_data->response) || empty($_transient_data->response[$this->name])) {
$version_info = $this->api_request('plugin_latest_version', ['slug' => $this->slug]);
if (false !== $version_info && is_object($version_info) && isset($version_info->new_version)) {
if (version_compare($this->version, $version_info->new_version, '<')) {
$_transient_data->response[$this->name] = $version_info;
}
update_option($this->slug . '_latest_version', $version_info->new_version);
$_transient_data->last_checked = time();
$_transient_data->checked[$this->name] = $this->version;
}
}
return $_transient_data;
}
/**
* Show update notification row.
*
* Needed for multisite subsites, because WordPress won't tell otherwise.
*
* @since 3.0.0
*
* @param string $file
* @param array $plugin
*/
public function show_update_notification($file, $plugin)
{
if (!current_user_can('update_plugins')) {
return;
}
if (!is_multisite()) {
return;
}
if ($this->name != $file) {
return;
}
// Remove our filter on the site transient
remove_filter('pre_set_site_transient_update_plugins', [$this, 'check_update'], 10);
$update_cache = get_site_transient('update_plugins');
if (!is_object($update_cache) || empty($update_cache->response) || empty($update_cache->response[$this->name])) {
$cache_key = md5('edd_plugin_' . sanitize_key($this->name) . '_version_info');
$version_info = get_transient($cache_key);
if (false === $version_info) {
$version_info = $this->api_request('plugin_latest_version', ['slug' => $this->slug]);
set_transient($cache_key, $version_info, 3600);
}
if (!is_object($version_info)) {
return;
}
if (version_compare($this->version, $version_info->new_version, '<')) {
$update_cache->response[$this->name] = $version_info;
}
$update_cache->last_checked = time();
$update_cache->checked[$this->name] = $this->version;
set_site_transient('update_plugins', $update_cache);
} else {
$version_info = $update_cache->response[$this->name];
}
// Restore our filter
add_filter('pre_set_site_transient_update_plugins', [$this, 'check_update']);
if (
!empty($update_cache->response[$this->name]) &&
version_compare($this->version, $version_info->new_version, '<')
) {
// build a plugin list row, with update notification
$wp_list_table = _get_list_table('WP_Plugins_List_Table');
echo '<tr class="plugin-update-tr"><td colspan="' .
$wp_list_table->get_column_count() .
'" class="plugin-update colspanchange"><div class="update-message">';
$changelog_link = self_admin_url(
'index.php?edd_sl_action=view_plugin_changelog&plugin=' .
$this->name .
'&slug=' .
$this->slug .
'&TB_iframe=true&width=772&height=911'
);
if (empty($version_info->download_link)) {
printf(
__(
'There is a new version of %1$s available. <a target="_blank" class="thickbox" href="%2$s">View version %3$s details</a>.',
'google-calendar-events'
),
esc_html($version_info->name),
esc_url($changelog_link),
esc_html($version_info->new_version)
);
} else {
printf(
__(
'There is a new version of %1$s available. <a target="_blank" class="thickbox" href="%2$s">View version %3$s details</a> or <a href="%4$s">update now</a>.',
'google-calendar-events'
),
esc_html($version_info->name),
esc_url($changelog_link),
esc_html($version_info->new_version),
esc_url(
wp_nonce_url(
self_admin_url('update.php?action=upgrade-plugin&plugin=') . $this->name,
'upgrade-plugin_' . $this->name
)
)
);
}
echo '</div></td></tr>';
}
}
/**
* Updates information on the "View version x.x details" page with custom data.
*
* @since 3.0.0
*
* @param mixed $_data
* @param string $_action
* @param object $_args
*
* @return object
*/
public function plugins_api_filter($_data, $_action = '', $_args = null)
{
if ('plugin_information' != $_action) {
return $_data;
}
if (!isset($_args->slug) || $_args->slug != $this->slug) {
return $_data;
}
$to_send = [
'slug' => $this->slug,
'is_ssl' => is_ssl(),
'fields' => [
'banners' => false, // These will be supported soon hopefully
'reviews' => false,
],
];
$api_response = $this->api_request('plugin_information', $to_send);
if (false !== $api_response) {
$_data = $api_response;
}
return $_data;
}
/**
* Disable SSL verification in order to prevent download update failures
*
* @since 3.0.0
*
* @param array $args
* @param string $url
* @return object|array $array
*/
public function http_request_args($args, $url)
{
// If it is an https request and we are performing a package download, disable ssl verification
if (strpos($url, 'https://') !== false && strpos($url, 'edd_action=package_download')) {
$args['sslverify'] = false;
}
return $args;
}
/**
* Calls the API and, if successful, returns the object delivered by the API.
*
* @since 3.0.0
*
* @param string $_action The requested action.
* @param array $_data Parameters for the API action.
* @return false|object
*/
private function api_request($_action, $_data)
{
global $wp_version;
$data = array_merge($this->api_data, $_data);
if ($data['slug'] != $this->slug) {
return;
}
if (empty($data['license'])) {
return;
}
if ($this->api_url == home_url()) {
return false; // Don't allow a plugin to ping itself
}
$api_params = [
'edd_action' => 'get_version',
'license' => $data['license'],
'item_name' => isset($data['item_name']) ? $data['item_name'] : false,
'item_id' => isset($data['item_id']) ? $data['item_id'] : false,
'slug' => $data['slug'],
'author' => $data['author'],
'url' => home_url(),
];
$request = wp_remote_post($this->api_url, ['timeout' => 15, 'sslverify' => false, 'body' => $api_params]);
if (!is_wp_error($request)) {
$request = json_decode(wp_remote_retrieve_body($request));
}
if ($request && isset($request->sections)) {
$request->sections = maybe_unserialize($request->sections);
} else {
$request = false;
}
return $request;
}
/**
* Show changelog.
*
* @since 3.0.0
*/
public function show_changelog()
{
if (empty($_REQUEST['edd_sl_action']) || 'view_plugin_changelog' != $_REQUEST['edd_sl_action']) {
return;
}
if (empty($_REQUEST['plugin'])) {
return;
}
if (empty($_REQUEST['slug'])) {
return;
}
if (!current_user_can('update_plugins')) {
wp_die(
__('You do not have permission to install plugin updates', 'google-calendar-events'),
__('Error', 'google-calendar-events'),
['response' => 403]
);
}
$response = $this->api_request('plugin_latest_version', ['slug' => $_REQUEST['slug']]);
if ($response && isset($response->sections['changelog'])) {
echo '<div style="background:#fff;padding:10px;">' . $response->sections['changelog'] . '</div>';
}
exit();
}
}