/usr/share/wordpress/wp-content/plugins/openid/login.php is in wordpress-openid 3.3.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* 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 );
} else if ( 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)');
}
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'));
}
} else if ( 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;
// create new user account if appropriate
$user_id = get_user_by_openid($identity_url);
if ( $identity_url && !$user_id && get_option('users_can_register') ) {
$user_data =& openid_get_user_data($identity_url);
openid_create_new_user($identity_url, $user_data);
}
// return to wp-login page
$url = get_option('siteurl') . '/wp-login.php';
if (empty($identity_url)) {
$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')) {
$label = __('Register using an OpenID:', 'openid');
echo '
<script type="text/javascript">
jQuery(function() {
jQuery("#registerform > p:first").hide();
jQuery("#registerform > p:first + p").hide();
jQuery("#reg_passmail").hide();
jQuery("p.submit").css("margin", "1em 0");
var link = jQuery("#nav a:first");
jQuery("#nav").text("").append(link);
});
</script>';
} 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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