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<?php
/**
* All the code required for handling logins via wp-login.php. These functions should not be considered public,
* and may change without notice.
*/
add_action( 'login_head', 'openid_wp_login_head' );
add_action( 'login_form', 'openid_wp_login_form' );
add_action( 'register_form', 'openid_wp_register_form', 9 );
add_action( 'register_post', 'openid_register_post', 10, 3 );
add_action( 'openid_finish_auth', 'openid_finish_login', 10, 2 );
add_filter( 'registration_errors', 'openid_clean_registration_errors', -99 );
add_filter( 'registration_errors', 'openid_registration_errors' );
add_action( 'init', 'openid_login_errors' );
/**
* Authenticate user to WordPress using OpenID.
*
* @param mixed $user authenticated user object, or WP_Error or null
*/
function openid_authenticate( $user ) {
if ( array_key_exists( 'openid_identifier', $_POST ) && $_POST['openid_identifier'] ) {
$redirect_to = array_key_exists( 'redirect_to', $_REQUEST ) ? $_REQUEST['redirect_to'] : null;
openid_start_login( $_POST['openid_identifier'], 'login', $redirect_to );
// if we got this far, something is wrong
global $error;
$error = openid_message();
$user = new WP_Error( 'openid_login_error', $error );
} elseif ( array_key_exists( 'finish_openid', $_REQUEST ) ) {
$identity_url = $_REQUEST['identity_url'];
if ( ! wp_verify_nonce( $_REQUEST['_wpnonce'], 'openid_login_' . md5( $identity_url ) ) ) {
$user = new WP_Error( 'openid_login_error', __( 'Error during OpenID authentication. Please try again. (invalid nonce)', 'openid' ) );
return $user;
}
if ( $identity_url ) {
$user_id = get_user_by_openid( $identity_url );
if ( $user_id ) {
$user = new WP_User( $user_id );
} else {
$user = new WP_Error( 'openid_registration_closed', __( 'Your have entered a valid OpenID, but this site is not currently accepting new accounts.', 'openid' ) );
}
} elseif ( array_key_exists( 'openid_error', $_REQUEST ) ) {
$user = new WP_Error( 'openid_login_error', htmlentities2( $_REQUEST['openid_error'] ) );
}
}
return $user;
}
add_action( 'authenticate', 'openid_authenticate' );
/**
* Action method for completing the 'login' action. This action is used when a user is logging in from
* wp-login.php.
*
* @param string $identity_url verified OpenID URL
*/
function openid_finish_login( $identity_url, $action ) {
if ( $action != 'login' ) {
return;
}
if ( $identity_url ) {
// create new user account if appropriate
$user_id = get_user_by_openid( $identity_url );
$user_data = openid_get_user_data( $identity_url );
if ( ! $user_id ) {
if ( get_option( 'users_can_register' ) ) {
// registration is enabled so create a new user
openid_create_new_user( $identity_url, $user_data );
} else {
// generate a error because it is not possible to create a new user
openid_message( __( 'Unable to create a new user.', 'openid' ) );
openid_status( 'error' );
}
} else {
do_action( 'openid_consumer_update_user_custom_data', $user_id, $user_data );
}
}
// return to wp-login page
$url = get_option( 'siteurl' ) . '/wp-login.php';
$status = openid_status();
$error = openid_message();
if ( $status == 'error' && ! empty( $error ) ) {
$url = add_query_arg( 'openid_error', openid_message(), $url );
}
$url = add_query_arg(
array(
'finish_openid' => 1,
'identity_url' => urlencode( $identity_url ),
'redirect_to' => $_SESSION['openid_finish_url'],
'_wpnonce' => wp_create_nonce( 'openid_login_' . md5( $identity_url ) ),
),
$url
);
wp_safe_redirect( $url );
exit;
}
/**
* Setup OpenID errors to be displayed to the user.
*/
function openid_login_errors() {
$self = basename( $GLOBALS['pagenow'] );
if ( $self != 'wp-login.php' ) {
return;
}
if ( array_key_exists( 'openid_error', $_REQUEST ) ) {
global $error;
$error = htmlentities2( $_REQUEST['openid_error'] );
}
}
/**
* Add style and script to login page.
*/
function openid_wp_login_head() {
openid_style();
}
/**
* Add OpenID input field to wp-login.php
*
* @action: login_form
**/
function openid_wp_login_form() {
echo '<hr id="openid_split" style="clear: both; margin-bottom: 1.0em; border: 0; border-top: 1px solid #999; height: 1px;" />';
echo '
<p style="margin-bottom: 8px;">
<label style="display: block; margin-bottom: 5px;">' . __( 'Or login using an OpenID', 'openid' ) . '<br />
<input type="text" name="openid_identifier" id="openid_identifier" class="input openid_identifier" value="" size="20" tabindex="25" /></label>
</p>
<p style="font-size: 0.9em; margin: 8px 0 24px 0;" id="what_is_openid">
<a href="http://openid.net/what/" target="_blank">' . __( 'Learn about OpenID', 'openid' ) . '</a>
</p>';
}
/**
* Add information about registration to wp-login.php?action=register
*
* @action: register_form
**/
function openid_wp_register_form() {
echo '
<div style="width:100%;">'; //Added to fix IE problem
if ( get_option( 'openid_required_for_registration' ) ) {
wp_enqueue_script( 'jquery' );
wp_enqueue_script( 'openid-register', plugin_dir_url( __FILE__ ) . 'f/register.js', array( 'jquery' ), OPENID_PLUGIN_REVISION );
$label = __( 'Register using an OpenID:', 'openid' );
} else {
$label = __( 'Or register using an OpenID:', 'openid' );
echo '<hr id="openid_split" style="clear: both; margin-bottom: 1.5em; border: 0; border-top: 1px solid #999; height: 1px;" />';
echo '
<script type="text/javascript">
jQuery(function() {
jQuery("#reg_passmail").insertBefore("#openid_split");
jQuery("p.submit").css("margin", "1em 0").clone().insertBefore("#openid_split");
});
</script>';
}
echo '
<p>
<label style="display: block; margin-bottom: 5px;">' . $label . '<br />
<input type="text" name="openid_identifier" id="openid_identifier" class="input openid_identifier" value="" size="20" tabindex="25" /></label>
</p>
<p style="float: left; font-size: 0.8em; margin: 0.8em 0;" id="what_is_openid">
<a href="http://openid.net/what/" target="_blank">' . __( 'Learn about OpenID', 'openid' ) . '</a>
</p>
</div>';
}
/**
* Clean out registration errors that don't apply.
*/
function openid_clean_registration_errors( $errors ) {
if ( get_option( 'openid_required_for_registration' ) || ! empty( $_POST['openid_identifier'] ) ) {
$new = new WP_Error();
foreach ( $errors->get_error_codes() as $code ) {
if ( in_array( $code, array( 'empty_username', 'empty_email' ) ) ) {
continue;
}
$message = $errors->get_error_message( $code );
$data = $errors->get_error_data( $code );
$new->add( $code, $message, $data );
}
$errors = $new;
}
if ( get_option( 'openid_required_for_registration' ) && empty( $_POST['openid_identifier'] ) ) {
$errors->add( 'openid_only', __( '<strong>ERROR</strong>: ', 'openid' ) . __( 'New users must register using OpenID.', 'openid' ) );
}
return $errors;
}
/**
* Handle WordPress registration errors.
*/
function openid_registration_errors( $errors ) {
if ( ! empty( $_POST['openid_identifier'] ) ) {
$errors->add( 'invalid_openid', __( '<strong>ERROR</strong>: ', 'openid' ) . openid_message() );
}
return $errors;
}
/**
* Handle WordPress registrations.
*/
function openid_register_post( $username, $password, $errors ) {
if ( ! empty( $_POST['openid_identifier'] ) ) {
wp_signon();
}
}
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