/usr/share/wordpress/wp-content/plugins/openid/common.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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/**
* Common functions.
*/
// -- WP Hooks
// Add hooks to handle actions in WordPress
add_action( 'init', 'openid_textdomain' ); // load textdomain
// include internal stylesheet
add_action( 'wp', 'openid_style');
// parse request
add_action('parse_request', 'openid_parse_request');
add_action('query_vars', 'openid_query_vars');
add_action('generate_rewrite_rules', 'openid_rewrite_rules');
add_action( 'cleanup_openid', 'openid_cleanup' );
add_filter( 'openid_user_data', 'openid_get_user_data_sreg', 8, 2);
add_filter( 'openid_user_data', 'openid_get_user_data_ax', 10, 2);
if (isset($wpmu_version)) {
// wpmu doesn't support non-autoload options
add_option( 'openid_associations', array(), null, 'yes' );
add_option( 'openid_nonces', array(), null, 'yes' );
} else {
add_option( 'openid_associations', array(), null, 'no' );
add_option( 'openid_nonces', array(), null, 'no' );
}
/**
* Set the textdomain for this plugin so we can support localizations.
*/
function openid_textdomain() {
load_plugin_textdomain('openid', null, 'openid/localization');
}
/**
* Get the internal SQL Store. If it is not already initialized, do so.
*
* @return WordPressOpenID_Store internal SQL store
*/
function openid_getStore() {
static $store;
if (!$store) {
$store = new WordPress_OpenID_OptionStore();
}
return $store;
}
/**
* Called on plugin activation and upgrading.
*
* @see register_activation_hook
*/
function openid_activate_plugin() {
global $wp_rewrite;
// if first time activation, set OpenID capability for administrators
if (get_option('openid_plugin_revision') === false) {
global $wp_roles;
$role = $wp_roles->get_role('administrator');
if ($role) $role->add_cap('use_openid_provider');
}
// for some reason, show_on_front is not always set, causing is_front_page() to fail
$show_on_front = get_option('show_on_front');
if ( empty($show_on_front) ) {
update_option('show_on_front', 'posts');
}
// Add custom OpenID options
add_option( 'openid_enable_commentform', true );
add_option( 'openid_plugin_enabled', true );
add_option( 'openid_plugin_revision', 0 );
add_option( 'openid_db_revision', 0 );
add_option( 'openid_enable_approval', false );
add_option( 'openid_xrds_returnto', true );
add_option( 'openid_comment_displayname_length', 12 );
openid_create_tables();
openid_migrate_old_data();
// setup schedule cleanup
wp_clear_scheduled_hook('cleanup_openid');
wp_schedule_event(time(), 'hourly', 'cleanup_openid');
// flush rewrite rules
if ( !isset($wp_rewrite) ) { $wp_rewrite = new WP_Rewrite(); }
$wp_rewrite->flush_rules();
// set current revision
update_option( 'openid_plugin_revision', OPENID_PLUGIN_REVISION );
openid_remove_historical_options();
}
/**
* Remove options that were used by previous versions of the plugin.
*/
function openid_remove_historical_options() {
delete_option('oid_db_revision');
delete_option('oid_db_version');
delete_option('oid_enable_approval');
delete_option('oid_enable_commentform');
delete_option('oid_enable_email_mapping');
delete_option('oid_enable_foaf');
delete_option('oid_enable_localaccounts');
delete_option('oid_enable_loginform');
delete_option('oid_enable_selfstyle');
delete_option('oid_enable_unobtrusive');
delete_option('oid_plugin_enabled');
delete_option('oid_plugin_revision');
delete_option('oid_plugin_version');
delete_option('oid_trust_root');
delete_option('force_openid_registration');
delete_option('openid_skip_require_name');
delete_option('openid_enable_email_mapping');
delete_option('openid_xrds_idib');
delete_option('openid_xrds_eaut');
}
/**
* Called on plugin deactivation. Cleanup all transient data.
*
* @see register_deactivation_hook
*/
function openid_deactivate_plugin() {
wp_clear_scheduled_hook('cleanup_openid');
delete_option('openid_associations');
delete_option('openid_nonces');
delete_option('openid_server_associations');
delete_option('openid_server_nonces');
}
/**
* Delete options in database
*/
function openid_uninstall_plugin() {
openid_delete_tables();
wp_clear_scheduled_hook('cleanup_openid');
// current options
delete_option('openid_enable_commentform');
delete_option('openid_plugin_enabled');
delete_option('openid_plugin_revision');
delete_option('openid_db_revision');
delete_option('openid_enable_approval');
delete_option('openid_xrds_returnto');
delete_option('openid_comment_displayname_length');
delete_option('openid_associations');
delete_option('openid_nonces');
delete_option('openid_server_associations');
delete_option('openid_server_nonces');
delete_option('openid_blog_owner');
delete_option('openid_no_require_name');
delete_option('openid_required_for_registration');
// historical options
openid_remove_historical_options();
}
/**
* Cleanup expired nonces and associations from the OpenID store.
*/
function openid_cleanup() {
$store =& openid_getStore();
$store->cleanupNonces();
$store->cleanupAssociations();
}
/*
* Customer error handler for calls into the JanRain library
*/
function openid_customer_error_handler($errno, $errmsg, $filename, $linenum, $vars) {
if( (2048 & $errno) == 2048 ) return;
if (!defined('WP_DEBUG') || !(WP_DEBUG)) {
// XML errors
if (strpos($errmsg, 'DOMDocument::loadXML') === 0) return;
if (strpos($errmsg, 'domxml') === 0) return;
// php-openid errors
//if (strpos($errmsg, 'Successfully fetched') === 0) return;
//if (strpos($errmsg, 'Got no response code when fetching') === 0) return;
//if (strpos($errmsg, 'Fetching URL not allowed') === 0) return;
// curl errors
//if (strpos($errmsg, 'CURL error (6)') === 0) return; // couldn't resolve host
//if (strpos($errmsg, 'CURL error (7)') === 0) return; // couldn't connect to host
}
openid_error( "Library Error $errno: $errmsg in $filename :$linenum");
}
/**
* Generate a unique WordPress username for the given OpenID URL.
*
* @param string $url OpenID URL to generate username for
* @param boolean $append should we try appending a number if the username is already taken
* @return mixed generated username or null if unable to generate
*/
function openid_generate_new_username($url, $append = true) {
$base = openid_normalize_username($url);
$i='';
while(true) {
$username = openid_normalize_username( $base . $i );
$user = get_user_by('login', $username);
if ( $user ) {
if (!$append) return null;
$i++;
continue;
}
// TODO: add hook
return $username;
}
}
/**
* Normalize the OpenID URL into a username. This includes rules like:
* - remove protocol prefixes like 'http://' and 'xri://'
* - remove the 'xri.net' domain for i-names
* - substitute certain characters which are not allowed by WordPress
*
* @param string $username username to be normalized
* @return string normalized username
* @uses apply_filters() Calls 'openid_normalize_username' just before returning normalized username
*/
function openid_normalize_username($username) {
$normalized = $username;
$normalized = preg_replace('|^https?://(xri.net/([^@]!?)?)?|', '', $normalized);
$normalized = preg_replace('|^xri://([^@]!?)?|', '', $normalized);
$normalized = preg_replace('|/$|', '', $normalized);
$normalized = sanitize_user( $normalized );
$normalized = preg_replace('|[^a-z0-9 _.\-@]+|i', '-', $normalized);
$normalized = apply_filters('openid_normalize_username', $normalized, $username);
return $normalized;
}
/**
* Get the OpenID trust root for the given return_to URL.
*
* @param string $return_to OpenID return_to URL
* @return string OpenID trust root
*/
function openid_trust_root($return_to = null) {
$trust_root = trailingslashit(get_option('home'));
// If return_to is HTTPS, trust_root must be as well
if (!empty($return_to) && preg_match('/^https/', $return_to)) {
$trust_root = preg_replace('/^http\:/', 'https:', $trust_root);
}
$trust_root = apply_filters('openid_trust_root', $trust_root, $return_to);
return $trust_root;
}
/**
* Login user with specified identity URL. This will find the WordPress user account connected to this
* OpenID and set it as the current user. Only call this function AFTER you've verified the identity URL.
*
* @param string $identity userID or OpenID to set as current user
* @param boolean $remember should we set the "remember me" cookie
* @return void
*/
function openid_set_current_user($identity, $remember = true) {
if (is_numeric($identity)) {
$user_id = $identity;
} else {
$user_id = get_user_by_openid($identity);
}
if (!$user_id) return;
$user = set_current_user($user_id);
wp_set_auth_cookie($user->ID, $remember);
do_action('wp_login', $user->user_login);
}
/**
* Create a new WordPress user with the specified identity URL and user data.
*
* @param string $identity_url OpenID to associate with the newly
* created account
* @param array $user_data array of user data
*/
function openid_create_new_user($identity_url, &$user_data) {
global $wpdb;
// Identity URL is new, so create a user
@include_once( ABSPATH . 'wp-admin/upgrade-functions.php'); // 2.1
@include_once( ABSPATH . WPINC . '/registration-functions.php'); // 2.0.4
// otherwise, try to use preferred username
if ( empty($username) && array_key_exists('nickname', $user_data) ) {
$username = openid_generate_new_username($user_data['nickname'], false);
}
// finally, build username from OpenID URL
if (empty($username)) {
$username = openid_generate_new_username($identity_url);
}
$user_data['user_login'] = $username;
$user_data['user_pass'] = substr( md5( uniqid( microtime() ) ), 0, 7);
$user_id = wp_insert_user( $user_data );
if( $user_id ) { // created ok
$user_data['ID'] = $user_id;
// XXX this all looks redundant, see openid_set_current_user
$user = new WP_User( $user_id );
if( ! wp_login( $user->user_login, $user_data['user_pass'] ) ) {
openid_message(__('User was created fine, but wp_login() for the new user failed. This is probably a bug.', 'openid'));
openid_status('error');
openid_error(openid_message());
return;
}
// notify of user creation
wp_new_user_notification( $user->user_login );
wp_clearcookie();
wp_setcookie( $user->user_login, md5($user->user_pass), true, '', '', true );
// Bind the provided identity to the just-created user
openid_add_user_identity($user_id, $identity_url);
openid_status('redirect');
if ( !$user->has_cap('edit_posts') ) $redirect_to = '/wp-admin/profile.php';
} else {
// failed to create user for some reason.
openid_message(__('OpenID authentication successful, but failed to create WordPress user. This is probably a bug.', 'openid'));
openid_status('error');
openid_error(openid_message());
}
}
/**
* Get user data for the given identity URL. Data is returned as an associative array with the keys:
* ID, user_url, user_nicename, display_name
*
* Multiple soures of data may be available and are attempted in the following order:
* - OpenID Attribute Exchange !! not yet implemented
* - OpenID Simple Registration
* - hCard discovery !! not yet implemented
* - default to identity URL
*
* @param string $identity_url OpenID to get user data about
* @return array user data
* @uses apply_filters() Calls 'openid_user_data' to gather profile data associated with the identity URL
*/
function openid_get_user_data($identity_url) {
$data = array(
'ID' => null,
'user_url' => $identity_url,
'user_nicename' => $identity_url,
'display_name' => $identity_url
);
// create proper website URL if OpenID is an i-name
if (preg_match('/^[\=\@\+].+$/', $identity_url)) {
$data['user_url'] = 'http://xri.net/' . $identity_url;
}
$data = apply_filters('openid_user_data', $data, $identity_url);
// if display_name is still the same as the URL, clean that up a bit
if ($data['display_name'] == $identity_url) {
$parts = parse_url($identity_url);
if ($parts !== false) {
$host = preg_replace('/^www./', '', $parts['host']);
$path = substr($parts['path'], 0, get_option('openid_comment_displayname_length'));
if (strlen($path) < strlen($parts['path'])) $path .= '…';
$data['display_name'] = $host . $path;
}
}
return $data;
}
/**
* Retrieve user data from OpenID Attribute Exchange.
*
* @param string $identity_url OpenID to get user data about
* @param reference $data reference to user data array
* @see get_user_data
*/
function openid_get_user_data_ax($data, $identity_url) {
require_once('Auth/OpenID/AX.php');
$response = openid_response();
$ax = Auth_OpenID_AX_FetchResponse::fromSuccessResponse($response);
if (!$ax) return $data;
$email = $ax->getSingle('http://axschema.org/contact/email');
if ($email && !is_a($email, 'Auth_OpenID_AX_Error')) {
$data['user_email'] = $email;
}
$nickname = $ax->getSingle('http://axschema.org/namePerson/friendly');
if ($nickname && !is_a($nickname, 'Auth_OpenID_AX_Error')) {
$data['nickname'] = $ax->getSingle('http://axschema.org/namePerson/friendly');
$data['user_nicename'] = $ax->getSingle('http://axschema.org/namePerson/friendly');
$data['display_name'] = $ax->getSingle('http://axschema.org/namePerson/friendly');
}
$fullname = $ax->getSingle('http://axschema.org/namePerson');
if ($fullname && !is_a($fullname, 'Auth_OpenID_AX_Error')) {
$namechunks = explode( ' ', $fullname, 2 );
if( isset($namechunks[0]) ) $data['first_name'] = $namechunks[0];
if( isset($namechunks[1]) ) $data['last_name'] = $namechunks[1];
$data['display_name'] = $fullname;
}
return $data;
}
/**
* Retrieve user data from OpenID Simple Registration.
*
* @param string $identity_url OpenID to get user data about
* @param reference $data reference to user data array
* @see get_user_data
*/
function openid_get_user_data_sreg($data, $identity_url) {
require_once('Auth/OpenID/SReg.php');
$response = openid_response();
$sreg_resp = Auth_OpenID_SRegResponse::fromSuccessResponse($response);
$sreg = $sreg_resp->contents();
if (!$sreg) return $data;
if (array_key_exists('email', $sreg) && $sreg['email']) {
$data['user_email'] = $sreg['email'];
}
if (array_key_exists('nickname', $sreg) && $sreg['nickname']) {
$data['nickname'] = $sreg['nickname'];
$data['user_nicename'] = $sreg['nickname'];
$data['display_name'] = $sreg['nickname'];
}
if (array_key_exists('fullname', $sreg) && $sreg['fullname']) {
$namechunks = explode( ' ', $sreg['fullname'], 2 );
if( isset($namechunks[0]) ) $data['first_name'] = $namechunks[0];
if( isset($namechunks[1]) ) $data['last_name'] = $namechunks[1];
$data['display_name'] = $sreg['fullname'];
}
return $data;
}
/**
* Retrieve user data from hCard discovery.
*
* @param string $identity_url OpenID to get user data about
* @param reference $data reference to user data array
* @see get_user_data
*/
function openid_get_user_data_hcard($data, $identity_url) {
// TODO implement hcard discovery
return $data;
}
/**
* Parse the WordPress request. If the query var 'openid' is present, then
* handle the request accordingly.
*
* @param WP $wp WP instance for the current request
*/
function openid_parse_request($wp) {
if (array_key_exists('openid', $wp->query_vars)) {
openid_clean_request();
switch ($wp->query_vars['openid']) {
case 'consumer':
@session_start();
$action = $_SESSION['openid_action'];
// no action, which probably means OP-initiated login. Set
// action to 'login', and redirect to home page when finished
if (empty($action)) {
$action = 'login';
if (empty($_SESSION['openid_finish_url'])) {
//$_SESSION['openid_finish_url'] = get_option('home');
}
}
finish_openid($action);
break;
case 'server':
openid_server_request($_REQUEST['action']);
break;
case 'ajax':
if ( check_admin_referer('openid_ajax') ) {
header('Content-Type: application/json');
echo '{ "valid":' . ( is_url_openid( $_REQUEST['url'] ) ? 'true' : 'false' ) . ', "nonce":"' . wp_create_nonce('openid_ajax') . '" }';
exit;
}
}
}
}
/**
* Check if the provided URL is a valid OpenID.
*
* @param string $url URL to check
* @return boolean true if the URL is a valid OpenID
*/
function is_url_openid( $url ) {
$auth_request = openid_begin_consumer( $url );
return ( $auth_request != null );
}
/**
* Clean HTTP request parameters for OpenID.
*
* Apache's rewrite module is often used to produce "pretty URLs" in WordPress.
* Other webservers, such as lighttpd, nginx, and Microsoft IIS each have ways
* (read: hacks) for simulating this kind of functionality. This function
* reverses the side-effects of these hacks so that the OpenID request
* variables are in the form that the OpenID library expects.
*/
function openid_clean_request() {
if (array_key_exists('q', $_GET)) {
// handle nginx web server, which adds an additional query string parameter named "q"
unset($_GET['q']);
$vars = explode('&', $_SERVER['QUERY_STRING']);
$clean = array();
foreach ($vars as $v) {
if (strpos($v, 'q=') !== 0) {
$clean[] = $v;
}
}
$_SERVER['QUERY_STRING'] = implode('&', $clean);
} else if ($_SERVER['argc'] >= 1 && $_SERVER['argv'][0] == 'error=404') {
// handle lighttpd hack which uses a custom error-handler, passing 404 errors to WordPress.
// This results in the QUERY_STRING not having the correct information, but fortunately we
// can pull it out of REQUEST_URI
list($path, $query) = explode('?', $_SERVER['REQUEST_URI'], 2);
$_SERVER['QUERY_STRING'] = $query;
}
}
/**
* Build an OpenID service URL.
*
* @param string $service service to build URL for
* @param string $scheme URL scheme to use for URL (see site_url())
* @return string service URL
* @see site_url
*/
function openid_service_url($service, $scheme = null) {
global $wp_rewrite;
if (!$wp_rewrite) $wp_rewrite = new WP_Rewrite();
if (!defined('OPENID_SSL') || !OPENID_SSL) $scheme = null;
$url = site_url('/', $scheme);
if ($wp_rewrite->using_permalinks()) {
$url .= 'index.php/openid/' . $service;
} else {
$url .= '?openid=' . $service;
}
return $url;
}
/**
* Add rewrite rules to WP_Rewrite for the OpenID services.
*/
function openid_rewrite_rules($wp_rewrite) {
$openid_rules = array(
'openid/(.+)' => 'index.php?openid=$matches[1]',
);
$wp_rewrite->rules = $openid_rules + $wp_rewrite->rules;
}
/**
* Add valid query vars to WordPress for OpenID.
*/
function openid_query_vars($vars) {
$vars[] = 'openid';
return $vars;
}
function openid_status($new = null) {
static $status;
return ($new == null) ? $status : $status = $new;
}
function openid_message($new = null) {
static $message;
return ($new == null) ? $message : $message = $new;
}
function openid_response($new = null) {
static $response;
return ($new == null) ? $response : $response = $new;
}
function openid_enabled($new = null) {
static $enabled;
if ($enabled == null) $enabled = true;
return ($new == null) ? $enabled : $enabled = $new;
}
/**
* Send HTTP post through the user-agent. If javascript is not supported, the
* user will need to click on a "continue" button.
*
* @param string $action form action (URL to POST form to)
* @param array $parameters key-value pairs of parameters to include in the form
* @uses do_action() Calls 'openid_page_head' hook action
*/
function openid_repost($action, $parameters) {
$html = '
<noscript><p>' . __('Since your browser does not support JavaScript, you must press the Continue button once to proceed.', 'openid') . '</p></noscript>
<form action="'.$action.'" method="post">';
foreach ($parameters as $k => $v) {
if ($k == 'submit') continue;
$html .= "\n" . '<input type="hidden" name="'.$k.'" value="' . htmlspecialchars(stripslashes($v), ENT_COMPAT, get_option('blog_charset')) . '" />';
}
$html .= '
<noscript><div><input type="submit" value="' . __('Continue') . '" /></div></noscript>
</form>
<script type="text/javascript">
document.write("<h2>'.__('Please Wait...', 'openid').'</h2>");
document.forms[0].submit()
</script>';
openid_page($html, __('OpenID Authentication Redirect', 'openid'));
}
function openid_page($message, $title = '') {
global $wp_locale;
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" <?php language_attributes(); ?>>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title><?php echo $title ?></title>
<?php
wp_admin_css('install', true);
if ( ($wp_locale) && ('rtl' == $wp_locale->text_direction) ) {
wp_admin_css('login-rtl', true);
}
do_action('admin_head');
do_action('openid_page_head');
?>
</head>
<body id="openid-page">
<?php echo $message; ?>
</body>
</html>
<?php
die();
}
/**
* Enqueue required javascript libraries on appropriate pages.
*
* @action: init
**/
function openid_js_setup() {
if (have_comments() || comments_open() || is_admin()) {
wp_enqueue_script('openid', plugins_url('openid/f/openid.js'), array('jquery'), OPENID_PLUGIN_REVISION);
}
}
/**
* Include OpenID stylesheet.
*
* "Intelligently" decides whether to enqueue or print the CSS file, based on whether * the 'wp_print_styles'
* action has been run. (This logic taken from the core wp_admin_css function)
**/
function openid_style() {
if ( !wp_style_is('openid', 'registered') ) {
wp_register_style('openid', plugins_url('openid/f/openid.css'), array(), OPENID_PLUGIN_REVISION);
}
if ( did_action('wp_print_styles') ) {
wp_print_styles('openid');
} else {
wp_enqueue_style('openid');
}
}
// ---------------------- //
// OpenID User Management //
// ---------------------- //
/**
* When a WordPress user is deleted, make sure all associated OpenIDs are deleted as well.
*/
function delete_user_openids($userid) {
openid_drop_all_identities($userid);
}
add_action( 'delete_user', 'delete_user_openids' );
/**
* Add the specified identity URL to the user.
*
* @param int $user_id user id
* @param string $identity_url identity url to add
*/
function openid_add_user_identity($user_id, $identity_url) {
openid_add_identity($user_id, $identity_url);
}
/**
* Add identity url to user.
*
* @param int $user_id user id
* @param string $url identity url to add
*/
function openid_add_identity($user_id, $url) {
global $wpdb;
$sql = $wpdb->prepare('INSERT INTO ' . openid_identity_table() . ' (user_id,url,hash) VALUES ( %s, %s, MD5(%s) )', $user_id, $url, $url);
return $wpdb->query( $sql );
}
/**
* Remove identity url from user.
*
* @param int $user_id user id
* @param string $identity_url identity url to remove
*/
function openid_drop_identity($user_id, $identity_url) {
global $wpdb;
return $wpdb->query( $wpdb->prepare('DELETE FROM '.openid_identity_table().' WHERE user_id = %s AND url = %s', $user_id, $identity_url) );
}
/**
* Remove all identity urls from user.
*
* @param int $user_id user id
*/
function openid_drop_all_identities($user_id) {
global $wpdb;
return $wpdb->query( $wpdb->prepare('DELETE FROM '.openid_identity_table().' WHERE user_id = %s', $user_id ) );
}
// -------------- //
// Other Function //
// -------------- //
/**
* Format OpenID for display... namely, remove the fragment if present.
* @param string $url url to display
* @return url formatted for display
*/
function openid_display_identity($url) {
return preg_replace('/#.+$/', '', $url);
}
function openid_error($msg) {
error_log('[OpenID] ' . $msg);
}
function openid_debug($msg) {
if (defined('WP_DEBUG') && WP_DEBUG) {
openid_error($msg);
}
}
?>
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