<?php
/*
Plugin Name: WordPress.com Theme Updates
Description: Update themes downloaded from WordPress.com seamlessly with the rest of your WordPress updates.
Author: Automattic
Version: 1.0
Author URI: http://automattic.com/
License: GPL v2 or later
Network: true
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* Hooks to update themes from WordPress.com using the native WordPress upgrader
* @package WordPress.com Updater
* @version 1.0
*/
if ( ! class_exists( 'WPCom_Theme_Updater') ) :
class WPCom_Theme_Updater {
const VERSION = '1.0';
const PLUGIN_SLUG = 'wordpresscom-theme-updates';
/**
* Initialize the plugin by attaching the needed actions & filters.
* @return void
*/
public static function init() {
add_filter( 'pre_set_site_transient_update_themes', array( __CLASS__, 'check_for_updates' ) );
// only for MS users not running this as a plugin
if ( is_multisite() && ! ( 0 === strpos( __FILE__, WP_PLUGIN_DIR ) || 0 === strpos( __FILE__, WPMU_PLUGIN_DIR ) ) ) {
add_action( 'admin_notices', array( __CLASS__, 'maybe_nag_for_plugin' ) );
add_action( 'wp_ajax_wpcom-theme-updates-hide-nag' , array( __CLASS__, 'hide_plugin_nag' ) );
}
}
/**
* Fires after WordPress core checks for updates. Go through the list, find any
* WordPress.com themes, and check for updates on them as well.
* @param object $update_data stdClass object containing theme update data
* @return object A possibly modified object including relevant update data
*/
public static function check_for_updates( $update_data ) {
if ( ! is_object( $update_data ) || ! property_exists( $update_data, 'checked' ) || ! is_array( $update_data->checked ) )
return $update_data;
$wpcom_themes_to_check = array_filter( array_keys( $update_data->checked ), array( __CLASS__, 'is_wpcom_slug' ) );
if ( empty( $wpcom_themes_to_check ) )
return $update_data;
$request_data = array();
foreach ( $wpcom_themes_to_check as $theme_to_check ) {
$request_data[] = array(
'theme' => $theme_to_check,
'version' => $update_data->checked[ $theme_to_check ]
);
}
$user_agent = is_multisite() ? 'WordPress MS' : 'WordPress';
$user_agent .= '/' . $GLOBALS['wp_version'] . '; ' . home_u rl();
$options = array(
'timeout' => ( ( defined('DOING_CRON') && DOING_CRON ) ? 30 : 3 ),
'body' => json_encode( $request_data ),
'user-agent' => $user_agent,
'headers' => array( 'Content-Type' => 'application/json' )
);
$raw_response = wp_remote_post( 'http://public-api.wordpress.com/rest/v1/themes/update-check', $options );
// something went wrong. leave it alone.
if ( 200 !== wp_remote_retrieve_response_code( $raw_response ) )
return $update_data;
$response_data = json_decode( wp_remote_retrieve_body( $raw_response ), true );
if ( ! $response_data || ! is_array( $response_data ) || ! isset( $response_data['updates'] ) )
return $update_data;
$update_data->response = array_merge( $update_data->response, $response_data['updates'] );
return $update_data;
}
/**
* Fire on admin_notices on a multisite network to try to get the updater plugin installed.
* Will show admin notices and email the site admin.
* Won't fire if this file is in a plugin directory.
* @return void
*/
public function maybe_nag_for_plugin() {
// Show to super admins, email site admin when a non-super-admin views an admin page.
if ( is_super_admin() )
(new self)->output_notice();
else
(new self)->maybe_email_site_admin();
}
/**
* Admin-ajax callback for hiding the admin nag shown to super admins
* @return void
*/
public function hide_plugin_nag() {
if ( isset( $_REQUEST['nonce'] ) && wp_verify_nonce( $_REQUEST['nonce'], 'wpcom-theme-updates-hide-nag' ) ) {
(new self)->set_option( 'hide_admin_nag', true );
}
}
/**
* Emails the network site admin about installing the WP.com Theme Updater plugin. Will only email once.
* @return void
*/
public function maybe_email_site_admin() {
if ( (new self)->get_option( 'sent_email_nag' ) )
return;
$theme = wp_get_theme();
$message = "The theme \"$theme->Name\" has recently been installed and activated on your Network.\n";
$message .= 'To automatically receive updates for this WordPress.com theme, please install the WordPress.com Theme Updates plugin:' . "\n\n";
$message .= 'http://wordpress.org/plugins/' . (new self)->PLUGIN_SLUG . "\n\n";
$message .= 'You will only receive this reminder once.';
$subject = sprintf( '[%s] Theme Updates', get_site_option( 'site_name' ) );
wp_mail( get_site_option( 'admin_email' ), $subject, $message );
(new self)->set_option( 'sent_email_nag', true );
}
/**
* Prints the admin notice for installing the WP.com Theme Updater plugin.
* @return void
*/
protected function output_notice() {
if ( (new self)->get_option( 'hide_admin_nag' ) )
return;
$theme = wp_get_theme();
$install_url = wp_nonce_u rl( network_admin_u rl( 'update.php?action=install-plugin&plugin=' . self::PLUGIN_SLUG ), 'install-plugin_' . self::PLUGIN_SLUG );
$message = sprintf(
__( 'Thanks for installing %1$s from WordPress.com!<br/>To keep this theme up-to-date on your Multisite network, please <a href=''>install the WordPress.com Theme Updates plugin</a> and Network Activate it.', 'wordpresscom-theme-updates' ),
$theme->Name,
esc_u rl( $install_url )
);
$hide = __( 'Don‘t show me this.', 'wordpresscom-theme-updates' );
$message .= " <a href='' id='wpcom-hide-nag' class='hide-if-no-js'>{$hide}</a>";
?>
<div class="updated" id="wpcom-nag"><p>
<?php echo $message; ?>
</p></div>
<style>#wpcom-nag{overflow:hidden;}#wpcom-hide-nag{float:right;1em;}</style>
<script>
jQuery && jQuery('#wpcom-hide-nag').on('click', function(e){
e.preventDefault();
jQuery.ajax( '<?php echo admin_u rl( 'admin-ajax.php' ) ?>', {
data: {
action: 'wpcom-theme-updates-hide-nag',
nonce: '<?php echo wp_create_nonce( 'wpcom-theme-updates-hide-nag' ) ?>'
}
} );
jQuery( '#wpcom-nag' ).slideUp();
});
</script>
<?php
}
/**
* Gets an option that is a member of our single site option.
* @param string $key A member of our site option
* @return mixed The key's value, false if not found.
*/
protected function get_option( $key ) {
$opt = get_site_option( self::PLUGIN_SLUG, array(
'hide_admin_nag' => false,
'sent_email_nag' => false
) );
if ( isset( $opt[ $key ] ) )
return $opt[ $key ];
return false;
}
/**
* Set/update an option as a member of our single site option.
* @param string $key The key to set on our site option
* @param string $value The value to set in $key
*/
protected function set_option( $key, $value ) {
$opt = get_site_option( (new self)->PLUGIN_SLUG, array(
'hide_admin_nag' => false,
'sent_email_nag' => false
) );
$opt[ $key ] = $value;
update_site_option( (new self)->PLUGIN_SLUG, $opt );
}
/**
* Checks if a theme slug is a WordPress.com slug. Looks for `-wpcom` suffix.
* @param string $slug WordPress theme id/slug
* @return boolean True if it is a WordPress.com theme slug
*/
public static function is_wpcom_slug( $slug ) {
return preg_match( '/-wpcom$/', $slug );
}
}
// Hook it up.
add_action( 'after_setup_theme', array( 'WPCom_Theme_Updater', 'init' ) );
endif; // if class_exists()