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<?php |
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|
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/* |
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Plugin Name: Password Protected |
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Plugin URI: https://wordpress.org/plugins/password-protected/ |
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Description: A very simple way to quickly password protect your WordPress site with a single password. Please note: This plugin does not restrict access to uploaded files and images and does not work on WP Engine or with some caching setups. |
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Version: 1.8 |
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Author: Ben Huson |
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Text Domain: password-protected |
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Author URI: http://github.com/benhuson/password-protected/ |
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License: GPLv2 |
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*/ |
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|
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/* |
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Copyright 2012 Ben Huson (email : ben@thewhiteroom.net) |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License, version 2, as |
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published by the Free Software Foundation. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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/** |
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* @todo Use wp_hash_password() ? |
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* @todo Remember me |
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*/ |
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|
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define( 'PASSWORD_PROTECTED_SUBDIR', '/' . str_replace( basename( __FILE__ ), '', plugin_basename( __FILE__ ) ) ); |
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define( 'PASSWORD_PROTECTED_URL', plugins_url( PASSWORD_PROTECTED_SUBDIR ) ); |
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define( 'PASSWORD_PROTECTED_DIR', plugin_dir_path( __FILE__ ) ); |
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|
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global $Password_Protected; |
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$Password_Protected = new Password_Protected(); |
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|
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class Password_Protected { |
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|
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var $version = '1.8'; |
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var $admin = null; |
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var $errors = null; |
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|
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/** |
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* Constructor |
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*/ |
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function Password_Protected() { |
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|
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$this->errors = new WP_Error(); |
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|
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register_activation_hook( __FILE__, array( &$this, 'install' ) ); |
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|
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add_action( 'plugins_loaded', array( $this, 'load_plugin_textdomain' ) ); |
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add_action( 'init', array( $this, 'disable_caching' ), 1 ); |
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add_action( 'init', array( $this, 'maybe_process_login' ), 1 ); |
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add_action( 'wp', array( $this, 'disable_feeds' ) ); |
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add_action( 'template_redirect', array( $this, 'maybe_show_login' ), -1 ); |
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add_filter( 'pre_option_password_protected_status', array( $this, 'allow_feeds' ) ); |
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add_filter( 'pre_option_password_protected_status', array( $this, 'allow_administrators' ) ); |
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add_filter( 'pre_option_password_protected_status', array( $this, 'allow_users' ) ); |
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add_action( 'init', array( $this, 'compat' ) ); |
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add_action( 'password_protected_login_messages', array( $this, 'login_messages' ) ); |
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|
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if ( is_admin() ) { |
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include_once( dirname( __FILE__ ) . '/admin/admin.php' ); |
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$this->admin = new Password_Protected_Admin(); |
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} |
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|
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} |
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|
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/** |
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* I18n |
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*/ |
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function load_plugin_textdomain() { |
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|
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load_plugin_textdomain( 'password-protected', false, basename( dirname( __FILE__ ) ) . '/languages' ); |
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|
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} |
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|
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/** |
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* Disable Page Caching |
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*/ |
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function disable_caching() { |
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|
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if ( $this->is_active() && ! defined( 'DONOTCACHEPAGE' ) ) { |
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define( 'DONOTCACHEPAGE', true ); |
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} |
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|
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} |
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|
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/** |
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* Is Active? |
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* |
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* @return boolean Is password protection active? |
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*/ |
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function is_active() { |
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|
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global $wp_query; |
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|
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// Always allow access to robots.txt |
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if ( isset( $wp_query ) && is_robots() ) { |
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return false; |
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} |
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|
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if ( (bool) get_option( 'password_protected_status' ) ) { |
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return true; |
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} |
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|
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return false; |
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|
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} |
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|
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/** |
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* Disable Feeds |
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* |
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* @todo An option/filter to prevent disabling of feeds. |
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*/ |
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function disable_feeds() { |
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|
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if ( $this->is_active() ) { |
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add_action( 'do_feed', array( $this, 'disable_feed' ), 1 ); |
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add_action( 'do_feed_rdf', array( $this, 'disable_feed' ), 1 ); |
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add_action( 'do_feed_rss', array( $this, 'disable_feed' ), 1 ); |
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add_action( 'do_feed_rss2', array( $this, 'disable_feed' ), 1 ); |
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add_action( 'do_feed_atom', array( $this, 'disable_feed' ), 1 ); |
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} |
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|
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} |
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|
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/** |
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* Disable Feed |
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* |
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* @todo Make Translatable |
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*/ |
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function disable_feed() { |
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|
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wp_die( sprintf( __( 'Feeds are not available for this site. Please visit the <a href="%s">website</a>.', 'password-protected' ), get_bloginfo( 'url' ) ) ); |
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|
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} |
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|
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/** |
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* Allow Feeds |
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* |
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* @param boolean $bool Allow feeds. |
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* @return boolean True/false. |
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*/ |
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function allow_feeds( $bool ) { |
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|
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if ( is_feed() && (bool) get_option( 'password_protected_feeds' ) ) { |
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return 0; |
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} |
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|
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return $bool; |
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|
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} |
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|
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/** |
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* Allow Administrators |
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* |
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* @param boolean $bool Allow administrators. |
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* @return boolean True/false. |
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*/ |
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function allow_administrators( $bool ) { |
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|
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if ( ! is_admin() && current_user_can( 'manage_options' ) && (bool) get_option( 'password_protected_administrators' ) ) { |
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return 0; |
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} |
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|
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return $bool; |
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|
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} |
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|
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/** |
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* Allow Users |
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* |
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* @param boolean $bool Allow administrators. |
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* @return boolean True/false. |
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*/ |
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function allow_users( $bool ) { |
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|
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if ( ! is_admin() && current_user_can( 'manage_options' ) && (bool) get_option( 'password_protected_users' ) ) { |
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return 0; |
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} |
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|
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return $bool; |
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|
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} |
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|
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/** |
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* Encrypt Password |
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* |
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* @param string $password Password. |
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* @return string Encrypted password. |
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*/ |
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function encrypt_password( $password ) { |
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|
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return md5( $password ); |
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|
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} |
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|
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/** |
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* Maybe Process Login |
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*/ |
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function maybe_process_login() { |
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|
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if ( $this->is_active() && isset( $_REQUEST['password_protected_pwd'] ) ) { |
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$password_protected_pwd = $_REQUEST['password_protected_pwd']; |
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$pwd = get_option( 'password_protected_password' ); |
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|
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// If correct password... |
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if ( ( $this->encrypt_password( $password_protected_pwd ) == $pwd && $pwd != '' ) || apply_filters( 'password_protected_process_login', false, $password_protected_pwd ) ) { |
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|
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$this->set_auth_cookie(); |
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$redirect_to = isset( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : ''; |
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$redirect_to = apply_filters( 'password_protected_login_redirect', $redirect_to ); |
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|
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if ( ! empty( $redirect_to ) ) { |
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$this->safe_redirect( $redirect_to ); |
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exit; |
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} |
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|
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} else { |
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|
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// ... otherwise incorrect password |
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$this->clear_auth_cookie(); |
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$this->errors->add( 'incorrect_password', __( 'Incorrect Password', 'password-protected' ) ); |
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|
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} |
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|
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} |
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|
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// Log out |
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if ( isset( $_REQUEST['password-protected'] ) && $_REQUEST['password-protected'] == 'logout' ) { |
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$this->logout(); |
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|
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if ( isset( $_REQUEST['redirect_to'] ) ) { |
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$redirect_to = esc_url_raw( $_REQUEST['redirect_to'], array( 'http', 'https' ) ); |
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wp_redirect( $redirect_to ); |
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exit(); |
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} |
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|
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$redirect_to = remove_query_arg( array( 'password-protected', 'redirect_to' ), ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] ); |
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$query = array( |
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'password-protected' => 'login', |
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'redirect_to' => urlencode( $redirect_to ) |
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); |
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|
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wp_redirect( add_query_arg( $query, home_url() ) ); |
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exit(); |
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|
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} |
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|
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} |
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|
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/** |
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* Maybe Show Login |
| 262 |
*/ |
| 263 |
function maybe_show_login() { |
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|
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// Don't show login if not enabled |
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if ( ! $this->is_active() ) { |
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return; |
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} |
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|
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// Logged in |
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if ( $this->validate_auth_cookie() ) { |
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return; |
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} |
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|
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// Show login form |
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if ( isset( $_REQUEST['password-protected'] ) && 'login' == $_REQUEST['password-protected'] ) { |
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|
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$default_theme_file = locate_template( array( 'password-protected-login.php' ) ); |
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|
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if ( empty( $default_theme_file ) ) { |
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$default_theme_file = dirname( __FILE__ ) . '/theme/password-protected-login.php'; |
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} |
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|
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$theme_file = apply_filters( 'password_protected_theme_file', $default_theme_file ); |
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if ( ! file_exists( $theme_file ) ) { |
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$theme_file = $default_theme_file; |
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} |
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|
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load_template( $theme_file ); |
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exit(); |
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|
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} else { |
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|
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$redirect_to = add_query_arg( 'password-protected', 'login', home_url() ); |
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|
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// URL to redirect back to after login |
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$redirect_to_url = apply_filters( 'password_protected_login_redirect_url', ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] ); |
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if ( ! empty( $redirect_to_url ) ) { |
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$redirect_to = add_query_arg( 'redirect_to', urlencode( $redirect_to_url ), $redirect_to ); |
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} |
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|
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wp_redirect( $redirect_to ); |
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exit(); |
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|
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} |
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} |
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|
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/** |
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* Get Site ID |
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* |
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* @return string Site ID. |
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*/ |
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function get_site_id() { |
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|
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global $blog_id; |
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return 'bid_' . apply_filters( 'password_protected_blog_id', $blog_id ); |
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|
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} |
| 319 |
|
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/** |
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* Logout |
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*/ |
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function logout() { |
| 324 |
|
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$this->clear_auth_cookie(); |
| 326 |
do_action( 'password_protected_logout' ); |
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|
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} |
| 329 |
|
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/** |
| 331 |
* Validate Auth Cookie |
| 332 |
* |
| 333 |
* @param string $cookie Cookie string. |
| 334 |
* @param string $scheme Cookie scheme. |
| 335 |
* @return boolean Validation successful? |
| 336 |
*/ |
| 337 |
function validate_auth_cookie( $cookie = '', $scheme = '' ) { |
| 338 |
|
| 339 |
if ( ! $cookie_elements = $this->parse_auth_cookie( $cookie, $scheme ) ) { |
| 340 |
do_action( 'password_protected_auth_cookie_malformed', $cookie, $scheme ); |
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return false; |
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} |
| 343 |
|
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extract( $cookie_elements, EXTR_OVERWRITE ); |
| 345 |
|
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$expired = $expiration; |
| 347 |
|
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// Allow a grace period for POST and AJAX requests |
| 349 |
if ( defined( 'DOING_AJAX' ) || 'POST' == $_SERVER['REQUEST_METHOD'] ) { |
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$expired += 3600; |
| 351 |
} |
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|
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// Quick check to see if an honest cookie has expired |
| 354 |
if ( $expired < current_time( 'timestamp' ) ) { |
| 355 |
do_action('password_protected_auth_cookie_expired', $cookie_elements); |
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return false; |
| 357 |
} |
| 358 |
|
| 359 |
$pass = md5( get_option( 'password_protected_password' ) ); |
| 360 |
$pass_frag = substr( $pass, 8, 4 ); |
| 361 |
|
| 362 |
$key = md5( $this->get_site_id() . $pass_frag . '|' . $expiration ); |
| 363 |
$hash = hash_hmac( 'md5', $this->get_site_id() . '|' . $expiration, $key); |
| 364 |
|
| 365 |
if ( $hmac != $hash ) { |
| 366 |
do_action( 'password_protected_auth_cookie_bad_hash', $cookie_elements ); |
| 367 |
return false; |
| 368 |
} |
| 369 |
|
| 370 |
if ( $expiration < current_time( 'timestamp' ) ) { // AJAX/POST grace period set above |
| 371 |
$GLOBALS['login_grace_period'] = 1; |
| 372 |
} |
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|
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return true; |
| 375 |
|
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} |
| 377 |
|
| 378 |
/** |
| 379 |
* Generate Auth Cookie |
| 380 |
* |
| 381 |
* @param int $expiration Expiration time in seconds. |
| 382 |
* @param string $scheme Cookie scheme. |
| 383 |
* @return string Cookie. |
| 384 |
*/ |
| 385 |
function generate_auth_cookie( $expiration, $scheme = 'auth' ) { |
| 386 |
|
| 387 |
$pass = md5( get_option( 'password_protected_password' ) ); |
| 388 |
$pass_frag = substr( $pass, 8, 4 ); |
| 389 |
|
| 390 |
$key = md5( $this->get_site_id() . $pass_frag . '|' . $expiration ); |
| 391 |
$hash = hash_hmac( 'md5', $this->get_site_id() . '|' . $expiration, $key ); |
| 392 |
$cookie = $this->get_site_id() . '|' . $expiration . '|' . $hash; |
| 393 |
|
| 394 |
return $cookie; |
| 395 |
|
| 396 |
} |
| 397 |
|
| 398 |
/** |
| 399 |
* Parse Auth Cookie |
| 400 |
* |
| 401 |
* @param string $cookie Cookie string. |
| 402 |
* @param string $scheme Cookie scheme. |
| 403 |
* @return string Cookie string. |
| 404 |
*/ |
| 405 |
function parse_auth_cookie( $cookie = '', $scheme = '' ) { |
| 406 |
|
| 407 |
if ( empty( $cookie ) ) { |
| 408 |
$cookie_name = $this->cookie_name(); |
| 409 |
|
| 410 |
if ( empty( $_COOKIE[$cookie_name] ) ) { |
| 411 |
return false; |
| 412 |
} |
| 413 |
$cookie = $_COOKIE[$cookie_name]; |
| 414 |
} |
| 415 |
|
| 416 |
$cookie_elements = explode( '|', $cookie ); |
| 417 |
if ( count( $cookie_elements ) != 3 ) { |
| 418 |
return false; |
| 419 |
} |
| 420 |
|
| 421 |
list( $site_id, $expiration, $hmac ) = $cookie_elements; |
| 422 |
|
| 423 |
return compact( 'site_id', 'expiration', 'hmac', 'scheme' ); |
| 424 |
|
| 425 |
} |
| 426 |
|
| 427 |
/** |
| 428 |
* Set Auth Cookie |
| 429 |
* |
| 430 |
* @todo |
| 431 |
* |
| 432 |
* @param boolean $remember Remember logged in. |
| 433 |
* @param string $secure Secure cookie. |
| 434 |
*/ |
| 435 |
function set_auth_cookie( $remember = false, $secure = '') { |
| 436 |
|
| 437 |
if ( $remember ) { |
| 438 |
$expiration = $expire = current_time( 'timestamp' ) + apply_filters( 'password_protected_auth_cookie_expiration', 1209600, $remember ); |
| 439 |
} else { |
| 440 |
$expiration = current_time( 'timestamp' ) + apply_filters( 'password_protected_auth_cookie_expiration', 172800, $remember ); |
| 441 |
$expire = 0; |
| 442 |
} |
| 443 |
|
| 444 |
if ( '' === $secure ) { |
| 445 |
$secure = is_ssl(); |
| 446 |
} |
| 447 |
|
| 448 |
$secure_password_protected_cookie = apply_filters( 'password_protected_secure_password_protected_cookie', false, $secure ); |
| 449 |
$password_protected_cookie = $this->generate_auth_cookie( $expiration, 'password_protected' ); |
| 450 |
|
| 451 |
setcookie( $this->cookie_name(), $password_protected_cookie, $expire, COOKIEPATH, COOKIE_DOMAIN, $secure_password_protected_cookie, true ); |
| 452 |
if ( COOKIEPATH != SITECOOKIEPATH ) { |
| 453 |
setcookie( $this->cookie_name(), $password_protected_cookie, $expire, SITECOOKIEPATH, COOKIE_DOMAIN, $secure_password_protected_cookie, true ); |
| 454 |
} |
| 455 |
|
| 456 |
} |
| 457 |
|
| 458 |
/** |
| 459 |
* Clear Auth Cookie |
| 460 |
*/ |
| 461 |
function clear_auth_cookie() { |
| 462 |
|
| 463 |
setcookie( $this->cookie_name(), ' ', current_time( 'timestamp' ) - 31536000, COOKIEPATH, COOKIE_DOMAIN ); |
| 464 |
setcookie( $this->cookie_name(), ' ', current_time( 'timestamp' ) - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN ); |
| 465 |
|
| 466 |
} |
| 467 |
|
| 468 |
/** |
| 469 |
* Cookie Name |
| 470 |
* |
| 471 |
* @return string Cookie name. |
| 472 |
*/ |
| 473 |
function cookie_name() { |
| 474 |
|
| 475 |
return $this->get_site_id() . '_password_protected_auth'; |
| 476 |
|
| 477 |
} |
| 478 |
|
| 479 |
/** |
| 480 |
* Install |
| 481 |
*/ |
| 482 |
function install() { |
| 483 |
|
| 484 |
$old_version = get_option( 'password_protected_version' ); |
| 485 |
|
| 486 |
// 1.1 - Upgrade to MD5 |
| 487 |
if ( empty( $old_version ) || version_compare( '1.1', $old_version ) ) { |
| 488 |
$pwd = get_option( 'password_protected_password' ); |
| 489 |
if ( ! empty( $pwd ) ) { |
| 490 |
$new_pwd = $this->encrypt_password( $pwd ); |
| 491 |
update_option( 'password_protected_password', $new_pwd ); |
| 492 |
} |
| 493 |
} |
| 494 |
|
| 495 |
update_option( 'password_protected_version', $this->version ); |
| 496 |
|
| 497 |
} |
| 498 |
|
| 499 |
/** |
| 500 |
* Compat |
| 501 |
* |
| 502 |
* Support for 3rd party plugins: |
| 503 |
* |
| 504 |
* - Login Logo http://wordpress.org/extend/plugins/login-logo/ |
| 505 |
* - Uber Login Logo http://wordpress.org/plugins/uber-login-logo/ |
| 506 |
*/ |
| 507 |
public function compat() { |
| 508 |
|
| 509 |
if ( class_exists( 'CWS_Login_Logo_Plugin' ) ) { |
| 510 |
|
| 511 |
// Add support for Mark Jaquith's Login Logo plugin |
| 512 |
add_action( 'password_protected_login_head', array( new CWS_Login_Logo_Plugin, 'login_head' ) ); |
| 513 |
|
| 514 |
} elseif ( class_exists( 'UberLoginLogo' ) ) { |
| 515 |
|
| 516 |
// Add support for Uber Login Logo plugin |
| 517 |
add_action( 'password_protected_login_head', array( 'UberLoginLogo', 'replaceLoginLogo' ) ); |
| 518 |
|
| 519 |
} |
| 520 |
|
| 521 |
} |
| 522 |
|
| 523 |
/** |
| 524 |
* Login Messages |
| 525 |
* Outputs messages and errors in the login template. |
| 526 |
*/ |
| 527 |
public function login_messages() { |
| 528 |
|
| 529 |
// Add message |
| 530 |
$message = apply_filters( 'password_protected_login_message', '' ); |
| 531 |
if ( ! empty( $message ) ) { |
| 532 |
echo $message . "\n"; |
| 533 |
} |
| 534 |
|
| 535 |
if ( $this->errors->get_error_code() ) { |
| 536 |
|
| 537 |
$errors = ''; |
| 538 |
$messages = ''; |
| 539 |
|
| 540 |
foreach ( $this->errors->get_error_codes() as $code ) { |
| 541 |
$severity = $this->errors->get_error_data( $code ); |
| 542 |
foreach ( $this->errors->get_error_messages( $code ) as $error ) { |
| 543 |
if ( 'message' == $severity ) { |
| 544 |
$messages .= ' ' . $error . "<br />\n"; |
| 545 |
} else { |
| 546 |
$errors .= ' ' . $error . "<br />\n"; |
| 547 |
} |
| 548 |
} |
| 549 |
} |
| 550 |
|
| 551 |
if ( ! empty( $errors ) ) { |
| 552 |
echo '<div id="login_error">' . apply_filters( 'password_protected_login_errors', $errors ) . "</div>\n"; |
| 553 |
} |
| 554 |
if ( ! empty( $messages ) ) { |
| 555 |
echo '<p class="message">' . apply_filters( 'password_protected_login_messages', $messages ) . "</p>\n"; |
| 556 |
} |
| 557 |
|
| 558 |
} |
| 559 |
|
| 560 |
} |
| 561 |
|
| 562 |
/** |
| 563 |
* Safe Redirect |
| 564 |
* |
| 565 |
* Ensure the redirect is to the same site or pluggable list of allowed domains. |
| 566 |
* If invalid will redirect to ... |
| 567 |
* Based on the WordPress wp_safe_redirect() function. |
| 568 |
*/ |
| 569 |
function safe_redirect( $location, $status = 302 ) { |
| 570 |
|
| 571 |
$location = wp_sanitize_redirect( $location ); |
| 572 |
$location = wp_validate_redirect( $location, home_url() ); |
| 573 |
|
| 574 |
wp_redirect( $location, $status ); |
| 575 |
|
| 576 |
} |
| 577 |
|
| 578 |
/** |
| 579 |
* Is Plugin Supported? |
| 580 |
* |
| 581 |
* Check to see if there are any known reasons why this plugin may not work in |
| 582 |
* the user's hosting environment. |
| 583 |
* |
| 584 |
* @return boolean |
| 585 |
*/ |
| 586 |
static function is_plugin_supported() { |
| 587 |
|
| 588 |
// WP Engine |
| 589 |
if ( class_exists( 'WPE_API', false ) ) { |
| 590 |
return new WP_Error( 'PASSWORD_PROTECTED_SUPPORT', __( 'The Password Protected plugin does not work with WP Engine hosting. Please disable it.', 'password-protected' ) ); |
| 591 |
} |
| 592 |
|
| 593 |
return true; |
| 594 |
|
| 595 |
} |
| 596 |
|
| 597 |
} |
| 598 |
|
