class-updater.php
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<?php
// uncomment this line for testing
//set_site_transient( 'update_plugins', null );
/**
* Allows plugins to use their own update API.
*
* @author Pippin Williamson
* @version 1.6.3
*/
class WPF_Plugin_Updater {
private $api_url = '';
private $api_data = array();
private $name = '';
private $slug = '';
private $version = '';
/**
* Class constructor.
*
* @uses plugin_basename()
* @uses hook()
*
* @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 ) {
global $edd_plugin_data;
$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'];
$edd_plugin_data[ $this->slug ] = $this->api_data;
// Set up hooks.
$this->init();
}
/**
* Set up WordPress filters to hook into WP's update process.
*
* @uses add_filter()
*
* @return void
*/
public function init() {
add_filter( 'pre_set_site_transient_update_plugins', array( $this, 'check_update' ) );
add_filter( 'plugins_api', array( $this, 'plugins_api_filter' ), 10, 3 );
remove_action( 'after_plugin_row_' . $this->name, 'wp_plugin_update_row', 10, 2 );
add_action( 'after_plugin_row_' . $this->name, array( $this, 'show_update_notification' ), 10, 2 );
add_action( 'admin_init', array( $this, 'show_changelog' ) );
}
/**
* 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.
*
* @uses api_request()
*
* @param array $_transient_data Update array build by WordPress.
* @return array 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', array( '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;
}
$_transient_data->last_checked = time();
$_transient_data->checked[ $this->name ] = $this->version;
}
}
return $_transient_data;
}
/**
* show update nofication row -- needed for multisite subsites, because WP won't tell you otherwise!
*
* @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', array( $this, 'check_update' ), 10 );
$update_cache = get_site_transient( 'update_plugins' );
$update_cache = is_object( $update_cache ) ? $update_cache : new stdClass();
if ( 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', array( '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', array( $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. %2$sView version %3$s details%4$s.', 'easy-digital-downloads' ),
esc_html( $version_info->name ),
'<a target="_blank" class="thickbox" href="' . esc_url( $changelog_link ) . '">',
esc_html( $version_info->new_version ),
'</a>'
);
} else {
printf(
__( 'There is a new version of %1$s available. %2$sView version %3$s details%4$s or %5$supdate now%6$s.', 'easy-digital-downloads' ),
esc_html( $version_info->name ),
'<a target="_blank" class="thickbox" href="' . esc_url( $changelog_link ) . '">',
esc_html( $version_info->new_version ),
'</a>',
'<a href="' . esc_url( wp_nonce_url( self_admin_url( 'update.php?action=upgrade-plugin&plugin=' ) . $this->name, 'upgrade-plugin_' . $this->name ) ) .'">',
'</a>'
);
}
do_action( "in_plugin_update_message-{$file}", $plugin, $version_info );
echo '</div></td></tr>';
}
}
/**
* Updates information on the "View version x.x details" page with custom data.
*
* @uses api_request()
*
* @param mixed $_data
* @param string $_action
* @param object $_args
* @return object $_data
*/
public function plugins_api_filter( $_data, $_action = '', $_args = null ) {
if ( $_action != 'plugin_information' ) {
return $_data;
}
if ( ! isset( $_args->slug ) || ( $_args->slug != $this->slug ) ) {
return $_data;
}
$to_send = array(
'slug' => $this->slug,
'is_ssl' => is_ssl(),
'fields' => array(
'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
*
* @param array $args
* @param string $url
* @return object $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 successfull, returns the object delivered by the API.
*
* @uses get_bloginfo()
* @uses wp_remote_post()
* @uses is_wp_error()
*
* @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( $this->api_url == home_url() ) {
return false; // Don't allow a plugin to ping itself
}
$api_params = array(
'edd_action' => 'get_version',
'license' => ! empty( $data['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, array( '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;
}
public function show_changelog() {
global $edd_plugin_data;
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', 'easy-digital-downloads' ), __( 'Error', 'easy-digital-downloads' ), array( 'response' => 403 ) );
}
$data = $edd_plugin_data[ $_REQUEST['slug'] ];
$cache_key = md5( 'edd_plugin_' . sanitize_key( $_REQUEST['plugin'] ) . '_version_info' );
$version_info = get_transient( $cache_key );
if( false === $version_info ) {
$api_params = array(
'edd_action' => 'get_version',
'item_name' => isset( $data['item_name'] ) ? $data['item_name'] : false,
'item_id' => isset( $data['item_id'] ) ? $data['item_id'] : false,
'slug' => $_REQUEST['slug'],
'author' => $data['author'],
'url' => home_url()
);
$request = wp_remote_post( $this->api_url, array( 'timeout' => 15, 'sslverify' => false, 'body' => $api_params ) );
if ( ! is_wp_error( $request ) ) {
$version_info = json_decode( wp_remote_retrieve_body( $request ) );
}
if ( ! empty( $version_info ) && isset( $version_info->sections ) ) {
$version_info->sections = maybe_unserialize( $version_info->sections );
} else {
$version_info = false;
}
set_transient( $cache_key, $version_info, 3600 );
}
if( ! empty( $version_info ) && isset( $version_info->sections['changelog'] ) ) {
echo '<div style="background:#fff;padding:10px;">' . $version_info->sections['changelog'] . '</div>';
}
exit;
}
}