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<?php
/**
* Plugin Name: WordPress GitHub Sync
* Plugin URI: https://github.com/benbalter/wordpress-github-sync
* Description: A WordPress plugin to sync content with a GitHub repository (or Jekyll site)
* Version: 1.0.2
* Author: Ben Balter, James DiGioia
* Author URI: http://ben.balter.com
* License: GPLv2
* Domain Path: /languages
* Text Domain: wordpress-github-sync
*/
/* Copyright 2014 Ben Balter (email : [email protected])
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2, as
published by the Free Software Foundation.
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
*/
$path = dirname( __FILE__ ) . '/vendor/autoload.php';
if ( file_exists( $path ) ) {
require_once $path;
}
class WordPress_GitHub_Sync {
/**
* Object instance
* @var self
*/
public static $instance;
/**
* Language text domain
* @var string
*/
public static $text_domain = 'wordpress-github-sync';
/**
* Current version
* @var string
*/
public static $version = '1.0.1';
/**
* Controller object
* @var WordPress_GitHub_Sync_Controller
*/
public $controller;
/**
* Controller object
* @var WordPress_GitHub_Sync_Admin
*/
public $admin;
/**
* Locked when receiving payload
* @var boolean
*/
public $push_lock = false;
/**
* Called at load time, hooks into WP core
*/
public function __construct() {
self::$instance = &$this;
if ( is_admin() ) {
$this->admin = new WordPress_GitHub_Sync_Admin;
}
$this->controller = new WordPress_GitHub_Sync_Controller;
register_activation_hook( __FILE__, array( $this, 'activate' ) );
add_action( 'admin_notices', array( $this, 'activation_notice' ) );
add_action( 'init', array( &$this, 'l10n' ) );
add_action( 'save_post', array( &$this, 'save_post_callback' ) );
add_action( 'delete_post', array( &$this, 'delete_post_callback' ) );
add_action( 'wp_ajax_nopriv_wpghs_sync_request', array( &$this, 'pull_posts' ) );
add_action( 'wpghs_export', array( &$this->controller, 'export_all' ) );
add_action( 'wpghs_import', array( &$this->controller, 'import_master' ) );
if ( defined( 'WP_CLI' ) && WP_CLI ) {
WP_CLI::add_command( 'wpghs', 'WordPress_GitHub_Sync_CLI' );
}
}
/**
* Init i18n files
*/
public function l10n() {
load_plugin_textdomain( self::$text_domain, false, plugin_basename( dirname( __FILE__ ) ) . '/languages/' );
}
/**
* Returns the Webhook secret
*/
public function secret() {
return get_option( 'wpghs_secret' );
}
/**
* Callback triggered on post save, used to initiate an outbound sync
*
* $post_id - (int) the post to sync
*/
public function save_post_callback( $post_id ) {
if ( wp_is_post_revision( $post_id ) || wp_is_post_autosave( $post_id ) ) {
return;
}
$this->controller->export_post( $post_id );
}
/**
* Callback triggered on post delete, used to initiate an outbound sync
*
* $post_id - (int) the post to delete
*/
public function delete_post_callback( $post_id ) {
if ( wp_is_post_revision( $post_id ) || wp_is_post_autosave( $post_id ) ) {
return;
}
$this->controller->delete_post( $post_id );
}
/**
* Webhook callback as trigered from GitHub push
*/
public function pull_posts() {
# Prevent pushes on update
$this->push_lock = true;
$raw_data = file_get_contents( 'php://input' );
$headers = $this->headers();
// validate secret
$hash = hash_hmac( 'sha1', $raw_data, $this->secret() );
if ( 'sha1=' . $hash !== $headers['X-Hub-Signature'] ) {
$msg = __( 'Failed to validate secret.', WordPress_GitHub_Sync::$text_domain );
self::write_log( $msg );
wp_send_json( array(
'result' => 'error',
'message' => $msg,
) );
}
$result = $this->controller->pull( json_decode( $raw_data ) );
wp_send_json( $result );
}
/**
* Cross-server header support
* Returns an array of the request's headers
*/
public function headers() {
if ( function_exists( 'getallheaders' ) ) {
return getallheaders();
}
// Nginx and pre 5.4 workaround
// http://www.php.net/manual/en/function.getallheaders.php
$headers = array();
foreach ( $_SERVER as $name => $value ) {
if ( 'HTTP_' === substr( $name, 0, 5 ) ) {
$headers[ str_replace( ' ', '-', ucwords( strtolower( str_replace( '_', ' ', substr( $name, 5 ) ) ) ) ) ] = $value;
}
}
return $headers;
}
/**
* Sets and kicks off the export cronjob
*/
public function start_export() {
update_option( '_wpghs_export_user_id', get_current_user_id() );
update_option( '_wpghs_export_started', 'yes' );
WordPress_GitHub_Sync::write_log( __( 'Starting full export to GitHub.', WordPress_GitHub_Sync::$text_domain ) );
wp_schedule_single_event( time(), 'wpghs_export' );
spawn_cron();
}
/**
* Sets and kicks off the import cronjob
*/
public function start_import() {
update_option( '_wpghs_import_started', 'yes' );
WordPress_GitHub_Sync::write_log( __( 'Starting import from GitHub.', WordPress_GitHub_Sync::$text_domain ) );
wp_schedule_single_event( time(), 'wpghs_import' );
spawn_cron();
}
/**
* Enables the admin notice on initial activation
*/
public function activate() {
if ( 'yes' !== get_option( '_wpghs_fully_exported' ) ) {
set_transient( '_wpghs_activated', 'yes' );
}
}
/**
* Displays the activation admin notice
*/
public function activation_notice() {
if ( ! get_transient( '_wpghs_activated' ) ) {
return;
}
delete_transient( '_wpghs_activated' );
?><div class="updated">
<p><?php _e( 'To set up your site to sync with GitHub, update your <a href="' . admin_url( 'options-general.php?page=wordpress-github-sync' ) . '">settings</a> and click "Export to GitHub."', WordPress_GitHub_Sync::$text_domain ); ?></p>
</div><?php
}
/**
* Print to WP_CLI if in CLI environment or
* write to debug.log if WP_DEBUG is enabled
* @source http://www.stumiller.me/sending-output-to-the-wordpress-debug-log/
*/
public static function write_log($msg, $write = 'line') {
if ( defined( 'WP_CLI' ) && WP_CLI ) {
if ( is_array( $msg ) || is_object( $msg ) ) {
WP_CLI::print_value( $msg );
} else {
WP_CLI::$write( $msg );
}
} elseif ( true === WP_DEBUG ) {
if ( is_array( $msg ) || is_object( $msg ) ) {
error_log( print_r( $msg, true ) );
} else {
error_log( $msg );
}
}
}
}
$wpghs = new WordPress_GitHub_Sync;