| 1 |
<?php |
| 2 |
|
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/** |
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* Module Name: Jetpack Single Sign On |
| 5 |
* Module Description: Let users login with their WordPress.com Credentials |
| 6 |
* Sort Order: 50 |
| 7 |
* First Introduced: 2.6 |
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* Requires Connection: Yes |
| 9 |
* Auto Activate: No |
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* Module Tags: Developers |
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*/ |
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|
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|
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class Jetpack_SSO { |
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static $instance = null; |
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|
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function __construct() { |
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if ( self::$instance ) { |
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return self::$instance; |
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} |
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|
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self::$instance = $this; |
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|
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add_action( 'admin_init', array( $this, 'admin_init' ) ); |
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add_action( 'login_init', array( $this, 'login_init' ) ); |
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add_action( 'delete_user', array( $this, 'delete_connection_for_user' ) ); |
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} |
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|
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function login_init() { |
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add_action( 'login_form', array( $this, 'login_form' ) ); |
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add_action( 'login_footer', array( $this, 'login_footer' ) ); |
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wp_enqueue_script( 'jquery' ); |
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wp_enqueue_style( 'genericons' ); |
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|
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if ( isset( $_GET['action'] ) && 'jetpack-sso' == $_GET['action'] ) { |
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if ( isset( $_GET['result'], $_GET['user_id'], $_GET['sso_nonce'] ) && 'success' == $_GET['result'] ) { |
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$this->handle_login(); |
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} else { |
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if ( Jetpack::check_identity_crisis() ) { |
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wp_die( __( "Error: This site's Jetpack connection is currently experiencing problems.", 'jetpack' ) ); |
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} else { |
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// Is it wiser to just use wp_redirect than do this runaround to wp_safe_redirect? |
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add_filter( 'allowed_redirect_hosts', array( $this, 'allowed_redirect_hosts' ) ); |
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wp_safe_redirect( $this->build_sso_url() ); |
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} |
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} |
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} |
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} |
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|
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function login_form() { |
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echo '<div class="jetpack-sso-wrap">' . $this->button() . '</div>'; |
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} |
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|
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function login_footer() { |
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?> |
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<style> |
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#loginform { |
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overflow: hidden; |
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padding-bottom: 26px; |
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} |
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.jetpack-sso-wrap { |
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display: block; |
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float: right; |
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clear: right; |
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margin:1em 0 0; |
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} |
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</style> |
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<script> |
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jQuery(document).ready(function($){ |
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$( '#loginform' ).append( $( '.jetpack-sso-wrap' ) ); |
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}); |
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</script> |
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<?php |
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} |
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|
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static function delete_connection_for_user( $user_id ) { |
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if ( ! $wpcom_user_id = get_user_meta( $user_id, 'wpcom_user_id', true ) ) { |
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return; |
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} |
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Jetpack::load_xml_rpc_client(); |
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$xml = new Jetpack_IXR_Client( array( |
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'user_id' => get_current_user_id() |
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) ); |
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$xml->query( 'jetpack.sso.removeUser', $wpcom_user_id ); |
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|
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if ( $xml->isError() ) { |
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return false; |
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} |
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|
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return $xml->getResponse(); |
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} |
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|
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static function request_initial_nonce() { |
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Jetpack::load_xml_rpc_client(); |
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$xml = new Jetpack_IXR_Client( array( |
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'user_id' => get_current_user_id() |
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) ); |
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$xml->query( 'jetpack.sso.requestNonce' ); |
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|
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if ( $xml->isError() ) { |
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wp_die( sprintf( '%s: %s', $xml->getErrorCode(), $xml->getErrorMessage() ) ); |
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} |
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|
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return $xml->getResponse(); |
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} |
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|
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function handle_login() { |
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$wpcom_nonce = sanitize_key( $_GET['sso_nonce'] ); |
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$wpcom_user_id = (int) $_GET['user_id']; |
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$result = sanitize_key( $_GET['result'] ); |
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|
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Jetpack::load_xml_rpc_client(); |
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$xml = new Jetpack_IXR_Client( array( |
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'user_id' => get_current_user_id() |
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) ); |
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$xml->query( 'jetpack.sso.validateResult', $wpcom_nonce, $wpcom_user_id ); |
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|
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if ( $xml->isError() ) { |
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wp_die( sprintf( '%s: %s', $xml->getErrorCode(), $xml->getErrorMessage() ) ); |
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} |
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|
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$user_data = $xml->getResponse(); |
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|
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if ( empty( $user_data ) ) { |
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wp_die( __( 'Error, invalid response data.', 'jetpack' ) ); |
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} |
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|
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$user_data = (object) $user_data; |
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$user = null; |
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do_action( 'jetpack_sso_pre_handle_login', $user_data ); |
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|
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if ( isset( $_GET['state'] ) && ( 0 < strpos( $_GET['state'], '|' ) ) ) { |
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list( $state, $nonce ) = explode( '|', $_GET['state'] ); |
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|
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if ( wp_verify_nonce( $nonce, $state ) ) { |
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if ( 'sso-link-user' == $state ) { |
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$user = wp_get_current_user(); |
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update_user_meta( $user->ID, 'wpcom_user_id', $user_data->ID ); |
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add_filter( 'login_redirect', array( __CLASS__, 'profile_page_url' ) ); |
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} |
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} else wp_nonce_ays(); |
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} |
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|
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if ( empty( $user ) ) { |
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$user = $this->get_user_by_wpcom_id( $user_data->ID ); |
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} |
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|
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// If we don't have one by wpcom_user_id, try by the email? |
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if ( empty( $user ) && self::match_by_email() ) { |
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$user = get_user_by( 'email', $user_data->email ); |
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if ( $user ) { |
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update_user_meta( $user->ID, 'wpcom_user_id', $user_data->ID ); |
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} |
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} |
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|
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// If we've still got nothing, create the user. |
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if ( empty( $user ) && ( get_option( 'users_can_register' ) || self::new_user_override() ) ) { |
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$username = $user_data->login; |
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|
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if ( username_exists( $username ) ) { |
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$username = $user_data->login . '_' . $user_data->ID; |
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} |
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|
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$tries = 0; |
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while ( username_exists( $username ) ) { |
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$username = $user_data->login . '_' . $user_data->ID . '_' . mt_rand(); |
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if ( $tries++ >= 5 ) { |
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wp_die( __( "Error: Couldn't create suitable username.", 'jetpack' ) ); |
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} |
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} |
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|
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$password = wp_generate_password( 20 ); |
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$user_id = wp_create_user( $username, $password, $user_data->email ); |
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$user = get_userdata( $user_id ); |
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|
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$user->display_name = $user_data->display_name; |
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$user->first_name = $user_data->first_name; |
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$user->last_name = $user_data->last_name; |
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$user->url = $user_data->url; |
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$user->description = $user_data->description; |
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wp_update_user( $user ); |
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|
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update_user_meta( $user->ID, 'wpcom_user_id', $user_data->ID ); |
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} |
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|
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do_action( 'jetpack_sso_handle_login', $user, $user_data ); |
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|
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if ( $user ) { |
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// Cache the user's details, so we can present it back to them on their user screen. |
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update_user_meta( $user->ID, 'wpcom_user_data', $user_data ); |
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wp_set_auth_cookie( $user->ID ); |
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|
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$_request_redirect_to = isset( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : ''; |
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$redirect_to = user_can( $user, 'edit_posts' ) ? admin_url() : self::profile_page_url(); |
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wp_safe_redirect( apply_filters( 'login_redirect', $redirect_to, $_request_redirect_to, $user ) ); |
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exit; |
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} |
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|
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$this->user_data = $user_data; |
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add_action( 'login_message', array( $this, 'cant_find_user' ) ); |
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} |
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|
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static function profile_page_url() { |
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return admin_url( 'profile.php' ); |
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} |
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|
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static function match_by_email() { |
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$match_by_email = defined( 'WPCC_MATCH_BY_EMAIL' ) ? WPCC_MATCH_BY_EMAIL : true; |
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return apply_filters( 'jetpack_sso_match_by_email', $match_by_email ); |
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} |
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|
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static function new_user_override() { |
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$new_user_override = defined( 'WPCC_NEW_USER_OVERRIDE' ) ? WPCC_NEW_USER_OVERRIDE : false; |
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return apply_filters( 'jetpack_sso_new_user_override', $new_user_override ); |
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} |
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|
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function allowed_redirect_hosts( $hosts ) { |
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if ( empty( $hosts ) ) { |
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$hosts = array(); |
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} |
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$hosts[] = 'wordpress.com'; |
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|
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return array_unique( $hosts ); |
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} |
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|
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function button( $args = array() ) { |
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$defaults = array( |
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'action' => 'jetpack-sso', |
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); |
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|
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$args = wp_parse_args( $args, $defaults ); |
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$url = add_query_arg( $args, wp_login_url() ); |
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|
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$css = "<style> |
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.jetpack-sso.button { |
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position: relative; |
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padding-left: 37px; |
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} |
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.jetpack-sso.button:before { |
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display: block; |
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padding: 3px 4px; |
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position: absolute; |
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top: -1px; |
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left: -1px; |
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border-radius: 2px 0 0 2px; |
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content: '\\f205'; |
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background: #0074a2; |
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color: #fff; |
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-webkit-font-smoothing: antialiased; |
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width: 22px; |
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height: 22px; |
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font: normal 22px/1 Genericons !important; |
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text-shadow: none; |
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} |
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.jetpack-sso.button:active:before { |
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padding-top: 4px; |
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} |
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.jetpack-sso.button:hover { |
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border: 1px solid #aaa; |
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}"; |
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|
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if ( version_compare( $GLOBALS['wp_version'], '3.8-alpha', '<' ) ) { |
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$css .= " |
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.jetpack-sso.button:before { |
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width: 18px; |
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height: 18px; |
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font-size: 18px !important; |
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} |
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"; |
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} |
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|
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$css .= "</style>"; |
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|
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return sprintf( '<a href="%1$s" class="jetpack-sso button">%2$s</a>', esc_url( $url ), esc_html__( 'Log in with WordPress.com', 'jetpack' ) ) . $css; |
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} |
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|
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function build_sso_url( $args = array() ) { |
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$defaults = array( |
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'action' => 'jetpack-sso', |
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'site_id' => Jetpack_Options::get_option( 'id' ), |
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'sso_nonce' => self::request_initial_nonce(), |
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); |
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|
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if ( isset( $_GET['state'] ) && check_admin_referer( $_GET['state'] ) ) { |
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$defaults['state'] = rawurlencode( $_GET['state'] . '|' . $_GET['_wpnonce'] ); |
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} |
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|
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$args = wp_parse_args( $args, $defaults ); |
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$url = add_query_arg( $args, 'https://wordpress.com/wp-login.php' ); |
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|
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return $url; |
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} |
| 293 |
|
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function get_user_by_wpcom_id( $wpcom_user_id ) { |
| 295 |
$user_query = new WP_User_Query( array( |
| 296 |
'meta_key' => 'wpcom_user_id', |
| 297 |
'meta_value' => intval( $wpcom_user_id ), |
| 298 |
'number' => 1, |
| 299 |
) ); |
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|
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$users = $user_query->get_results(); |
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return $users ? array_shift( $users ) : null; |
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} |
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|
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function cant_find_user( $message ) { |
| 306 |
if ( self::match_by_email() ) { |
| 307 |
$err_format = __( 'We couldn\'t find an account with the email <strong><code>%1$s</code></strong> to log you in with. If you already have an account on <strong>%2$s</strong>, please make sure that <strong><code>%1$s</code></strong> is configured as the email address, or that you have connected to WordPress.com on your profile page.', 'jetpack' ); |
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} else { |
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$err_format = __( 'We couldn\'t find any account on <strong>%2$s</strong> that is linked to your WordPress.com account to log you in with. If you already have an account on <strong>%2$s</strong>, please make sure that you have connected to WordPress.com on your profile page.', 'jetpack' ); |
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} |
| 311 |
$err = sprintf( $err_format, $this->user_data->email, get_bloginfo( 'name' ) ); |
| 312 |
$message .= sprintf( '<p class="message" id="login_error">%s</p>', $err ); |
| 313 |
return $message; |
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} |
| 315 |
|
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/** |
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* Deal with user connections... |
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*/ |
| 319 |
function admin_init() { |
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add_action( 'show_user_profile', array( $this, 'edit_profile_fields' ) ); // For their own profile |
| 321 |
add_action( 'edit_user_profile', array( $this, 'edit_profile_fields' ) ); // For folks editing others profiles |
| 322 |
|
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if ( isset( $_GET['jetpack_sso'] ) && 'purge' == $_GET['jetpack_sso'] && check_admin_referer( 'jetpack_sso_purge' ) ) { |
| 324 |
$user = wp_get_current_user(); |
| 325 |
// Remove the connection on the wpcom end. |
| 326 |
self::delete_connection_for_user( $user->ID ); |
| 327 |
// Clear it locally. |
| 328 |
delete_user_meta( $user->ID, 'wpcom_user_id' ); |
| 329 |
delete_user_meta( $user->ID, 'wpcom_user_data' ); |
| 330 |
// Forward back to the profile page. |
| 331 |
wp_safe_redirect( remove_query_arg( array( 'jetpack_sso', '_wpnonce' ) ) ); |
| 332 |
} |
| 333 |
} |
| 334 |
|
| 335 |
function edit_profile_fields( $user ) { |
| 336 |
?> |
| 337 |
|
| 338 |
<h3><?php _e( 'WordPress.com Single Sign On', 'jetpack' ); ?></h3> |
| 339 |
<p><?php _e( 'Connecting with WordPress.com SSO enables you to log in via your WordPress.com account.', 'jetpack' ); ?></p> |
| 340 |
|
| 341 |
<?php if ( ( $user_data = get_user_meta( $user->ID, 'wpcom_user_data', true ) ) && ! empty( $user_data->ID ) ) : /* If the user is currently connected... */ ?> |
| 342 |
|
| 343 |
<table class="form-table jetpack-sso-form-table"> |
| 344 |
<tbody> |
| 345 |
<tr> |
| 346 |
<td> |
| 347 |
<div class="profile-card"> |
| 348 |
<?php echo get_avatar( $user_data->email ); ?> |
| 349 |
<p class="connected"><strong><?php _e( 'Connected', 'jetpack' ); ?></strong></p> |
| 350 |
<p><?php echo esc_html( $user_data->login ); ?></p> |
| 351 |
</div> |
| 352 |
<p><a class="button button-secondary" href="<?php echo esc_url( wp_nonce_url( add_query_arg( 'jetpack_sso', 'purge' ), 'jetpack_sso_purge' ) ); ?>"><?php _e( 'Unlink This Account', 'jetpack' ); ?></a></p> |
| 353 |
</td> |
| 354 |
</tr> |
| 355 |
</tbody> |
| 356 |
</table> |
| 357 |
|
| 358 |
<style> |
| 359 |
.jetpack-sso-form-table td { |
| 360 |
padding-left: 0; |
| 361 |
} |
| 362 |
|
| 363 |
.jetpack-sso-form-table .profile-card { |
| 364 |
padding: 10px; |
| 365 |
background: #fff; |
| 366 |
overflow: hidden; |
| 367 |
max-width: 400px; |
| 368 |
box-shadow: 0 1px 2px rgba( 0, 0, 0, 0.1 ); |
| 369 |
margin-bottom: 1em; |
| 370 |
} |
| 371 |
|
| 372 |
.jetpack-sso-form-table .profile-card img { |
| 373 |
float: left; |
| 374 |
margin-right: 1em; |
| 375 |
width: 48px; |
| 376 |
height: 48px; |
| 377 |
} |
| 378 |
|
| 379 |
.jetpack-sso-form-table .profile-card .connected { |
| 380 |
float: right; |
| 381 |
margin-right: 0.5em; |
| 382 |
color: #0a0; |
| 383 |
} |
| 384 |
|
| 385 |
.jetpack-sso-form-table .profile-card p { |
| 386 |
margin-top: 0.7em; |
| 387 |
font-size: 1.2em; |
| 388 |
} |
| 389 |
</style> |
| 390 |
|
| 391 |
<?php elseif ( get_current_user_id() == $user->ID ) : ?> |
| 392 |
|
| 393 |
<?php echo $this->button( 'state=sso-link-user&_wpnonce=' . wp_create_nonce('sso-link-user') ); // update ?> |
| 394 |
|
| 395 |
<?php else : ?> |
| 396 |
|
| 397 |
<p><?php _e( 'This profile is not currently linked to a WordPress.com Profile.', 'jetpack' ); ?></p> |
| 398 |
|
| 399 |
<?php endif; |
| 400 |
} |
| 401 |
} |
| 402 |
|
| 403 |
new Jetpack_SSO; |
| 404 |
|
