Mercurial > defr > drupal > core

annotate modules/openid/openid.module @ 1:c1f4ac30525a 6.0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Drupal 6.0
author Franck Deroche <webmaster@defr.org>
date Tue, 23 Dec 2008 14:28:28 +0100
parents
children 2427550111ae
rev   line source
webmaster@1 1 <?php
webmaster@1 2 // $Id: openid.module,v 1.19 2008/01/30 22:11:22 goba Exp $
webmaster@1 3
webmaster@1 4 /**
webmaster@1 5 * @file
webmaster@1 6 * Implement OpenID Relying Party support for Drupal
webmaster@1 7 */
webmaster@1 8
webmaster@1 9 /**
webmaster@1 10 * Implementation of hook_menu.
webmaster@1 11 */
webmaster@1 12 function openid_menu() {
webmaster@1 13 $items['openid/authenticate'] = array(
webmaster@1 14 'title' => 'OpenID Login',
webmaster@1 15 'page callback' => 'openid_authentication_page',
webmaster@1 16 'access callback' => 'user_is_anonymous',
webmaster@1 17 'type' => MENU_CALLBACK,
webmaster@1 18 'file' => 'openid.pages.inc',
webmaster@1 19 );
webmaster@1 20 $items['user/%user/openid'] = array(
webmaster@1 21 'title' => 'OpenID identities',
webmaster@1 22 'page callback' => 'openid_user_identities',
webmaster@1 23 'page arguments' => array(1),
webmaster@1 24 'access callback' => 'user_edit_access',
webmaster@1 25 'access arguments' => array(1),
webmaster@1 26 'type' => MENU_LOCAL_TASK,
webmaster@1 27 'file' => 'openid.pages.inc',
webmaster@1 28 );
webmaster@1 29 $items['user/%user/openid/delete'] = array(
webmaster@1 30 'title' => 'Delete OpenID',
webmaster@1 31 'page callback' => 'openid_user_delete',
webmaster@1 32 'page arguments' => array(1),
webmaster@1 33 'type' => MENU_CALLBACK,
webmaster@1 34 'file' => 'openid.pages.inc',
webmaster@1 35 );
webmaster@1 36 return $items;
webmaster@1 37 }
webmaster@1 38
webmaster@1 39 /**
webmaster@1 40 * Implementation of hook_help().
webmaster@1 41 */
webmaster@1 42 function openid_help($path, $arg) {
webmaster@1 43 switch ($path) {
webmaster@1 44
webmaster@1 45 case 'user/%/openid':
webmaster@1 46 $output = '<p>'. t('This site supports <a href="@openid-net">OpenID</a>, a secure way to log into many websites using a single username and password. OpenID can reduce the necessity of managing many usernames and passwords for many websites.', array('@openid-net' => url('http://openid.net'))) .'</p>';
webmaster@1 47 $output .= '<p>'. t('To use OpenID you must first establish an identity on a public or private OpenID server. If you do not have an OpenID and would like one, look into one of the <a href="@openid-providers">free public providers</a>. You can find out more about OpenID at <a href="@openid-net">this website</a>.', array('@openid-providers' => url('http://openid.net/wiki/index.php/OpenIDServers'), '@openid-net' => url('http://openid.net'))) .'</p>';
webmaster@1 48 $output .= '<p>'. t('If you already have an OpenID, enter the URL to your OpenID server below (e.g. myusername.openidprovider.com). Next time you login, you will be able to use this URL instead of a regular username and password. You can have multiple OpenID servers if you like; just keep adding them here.') .'</p>';
webmaster@1 49 return $output;
webmaster@1 50
webmaster@1 51 case 'admin/help#openid':
webmaster@1 52 $output = '<p>'. t('OpenID is a secure method for logging into many websites with a single username and password. It does not require special software, and it does not share passwords with any site to which it is associated; including your site.') .'</p>';
webmaster@1 53 $output .= '<p>'. t('Users can create accounts using their OpenID, assign one or more OpenIDs to an existing account, and log in using an OpenID. This lowers the barrier to registration, which is good for the site, and offers convenience and security to the users. OpenID is not a trust system, so email verification is still necessary. The benefit stems from the fact that users can have a single password that they can use on many websites. This means they can easily update their single password from a centralized location, rather than having to change dozens of passwords individually.') .'</p>';
webmaster@1 54 $output .= '<p>'. t('The basic concept is as follows: A user has an account on an OpenID server. This account provides them with a unique URL (such as myusername.openidprovider.com). When the user comes to your site, they are presented with the option of entering this URL. Your site then communicates with the OpenID server, asking it to verify the identity of the user. If the user is logged into their OpenID server, the server communicates back to your site, verifying the user. If they are not logged in, the OpenID server will ask the user for their password. At no point does your site record, or need to record the user\'s password.') .'</p>';
webmaster@1 55 $output .= '<p>'. t('More information on OpenID is available at <a href="@openid-net">OpenID.net</a>.', array('@openid-net' => url('http://openid.net'))) .'</p>';
webmaster@1 56 $output .= '<p>'. t('For more information, see the online handbook entry for <a href="@handbook">OpenID module</a>.', array('@handbook' => 'http://drupal.org/handbook/modules/openid')) .'</p>';
webmaster@1 57 return $output;
webmaster@1 58 }
webmaster@1 59 }
webmaster@1 60
webmaster@1 61 /**
webmaster@1 62 * Implementation of hook_user().
webmaster@1 63 */
webmaster@1 64 function openid_user($op, &$edit, &$account, $category = NULL) {
webmaster@1 65 if ($op == 'insert' && isset($_SESSION['openid']['values'])) {
webmaster@1 66 // The user has registered after trying to login via OpenID.
webmaster@1 67 if (variable_get('user_email_verification', TRUE)) {
webmaster@1 68 drupal_set_message(t('Once you have verified your email address, you may log in via OpenID.'));
webmaster@1 69 }
webmaster@1 70 unset($_SESSION['openid']);
webmaster@1 71 }
webmaster@1 72 }
webmaster@1 73
webmaster@1 74 /**
webmaster@1 75 * Implementation of hook_form_alter : adds OpenID login to the login forms.
webmaster@1 76 */
webmaster@1 77 function openid_form_alter(&$form, $form_state, $form_id) {
webmaster@1 78 if ($form_id == 'user_login_block' || $form_id == 'user_login') {
webmaster@1 79 drupal_add_css(drupal_get_path('module', 'openid') .'/openid.css', 'module');
webmaster@1 80 drupal_add_js(drupal_get_path('module', 'openid') .'/openid.js');
webmaster@1 81 if (!empty($form_state['post']['openid_identifier'])) {
webmaster@1 82 $form['name']['#required'] = FALSE;
webmaster@1 83 $form['pass']['#required'] = FALSE;
webmaster@1 84 unset($form['#submit']);
webmaster@1 85 $form['#validate'] = array('openid_login_validate');
webmaster@1 86 }
webmaster@1 87
webmaster@1 88 $items = array();
webmaster@1 89 $items[] = array(
webmaster@1 90 'data' => l(t('Log in using OpenID'), '#'),
webmaster@1 91 'class' => 'openid-link',
webmaster@1 92 );
webmaster@1 93 $items[] = array(
webmaster@1 94 'data' => l(t('Cancel OpenID login'), '#'),
webmaster@1 95 'class' => 'user-link',
webmaster@1 96 );
webmaster@1 97
webmaster@1 98 $form['openid_links'] = array(
webmaster@1 99 '#value' => theme('item_list', $items),
webmaster@1 100 '#weight' => 1,
webmaster@1 101 );
webmaster@1 102
webmaster@1 103 $form['links']['#weight'] = 2;
webmaster@1 104
webmaster@1 105 $form['openid_identifier'] = array(
webmaster@1 106 '#type' => 'textfield',
webmaster@1 107 '#title' => t('Log in using OpenID'),
webmaster@1 108 '#size' => ($form_id == 'user_login') ? 58 : 13,
webmaster@1 109 '#maxlength' => 255,
webmaster@1 110 '#weight' => -1,
webmaster@1 111 '#description' => l(t('What is OpenID?'), 'http://openid.net/', array('external' => TRUE)),
webmaster@1 112 );
webmaster@1 113 $form['openid.return_to'] = array('#type' => 'hidden', '#value' => url('openid/authenticate', array('absolute' => TRUE, 'query' => drupal_get_destination())));
webmaster@1 114 }
webmaster@1 115 elseif ($form_id == 'user_register' && isset($_SESSION['openid'])) {
webmaster@1 116 // We were unable to auto-register a new user. Prefill the registration
webmaster@1 117 // form with the values we have.
webmaster@1 118 $form['name']['#default_value'] = $_SESSION['openid']['values']['name'];
webmaster@1 119 $form['mail']['#default_value'] = $_SESSION['openid']['values']['mail'];
webmaster@1 120 // If user_email_verification is off, hide the password field and just fill
webmaster@1 121 // with random password to avoid confusion.
webmaster@1 122 if (!variable_get('user_email_verification', TRUE)) {
webmaster@1 123 $form['pass']['#type'] = 'hidden';
webmaster@1 124 $form['pass']['#value'] = user_password();
webmaster@1 125 }
webmaster@1 126 $form['auth_openid'] = array('#type' => 'hidden', '#value' => $_SESSION['openid']['values']['auth_openid']);
webmaster@1 127 }
webmaster@1 128 return $form;
webmaster@1 129 }
webmaster@1 130
webmaster@1 131 /**
webmaster@1 132 * Login form _validate hook
webmaster@1 133 */
webmaster@1 134 function openid_login_validate($form, &$form_state) {
webmaster@1 135 $return_to = $form_state['values']['openid.return_to'];
webmaster@1 136 if (empty($return_to)) {
webmaster@1 137 $return_to = url('', array('absolute' => TRUE));
webmaster@1 138 }
webmaster@1 139
webmaster@1 140 openid_begin($form_state['values']['openid_identifier'], $return_to, $form_state['values']);
webmaster@1 141 }
webmaster@1 142
webmaster@1 143 /**
webmaster@1 144 * The initial step of OpenID authentication responsible for the following:
webmaster@1 145 * - Perform discovery on the claimed OpenID.
webmaster@1 146 * - If possible, create an association with the Provider's endpoint.
webmaster@1 147 * - Create the authentication request.
webmaster@1 148 * - Perform the appropriate redirect.
webmaster@1 149 *
webmaster@1 150 * @param $claimed_id The OpenID to authenticate
webmaster@1 151 * @param $return_to The endpoint to return to from the OpenID Provider
webmaster@1 152 */
webmaster@1 153 function openid_begin($claimed_id, $return_to = '', $form_values = array()) {
webmaster@1 154 module_load_include('inc', 'openid');
webmaster@1 155
webmaster@1 156 $claimed_id = _openid_normalize($claimed_id);
webmaster@1 157
webmaster@1 158 $services = openid_discovery($claimed_id);
webmaster@1 159 if (count($services) == 0) {
webmaster@1 160 form_set_error('openid_identifier', t('Sorry, that is not a valid OpenID. Please ensure you have spelled your ID correctly.'));
webmaster@1 161 return;
webmaster@1 162 }
webmaster@1 163
webmaster@1 164 // Store discovered information in the users' session so we don't have to rediscover.
webmaster@1 165 $_SESSION['openid']['service'] = $services[0];
webmaster@1 166 // Store the claimed id
webmaster@1 167 $_SESSION['openid']['claimed_id'] = $claimed_id;
webmaster@1 168 // Store the login form values so we can pass them to
webmaster@1 169 // user_exteral_login later.
webmaster@1 170 $_SESSION['openid']['user_login_values'] = $form_values;
webmaster@1 171
webmaster@1 172 $op_endpoint = $services[0]['uri'];
webmaster@1 173 // If bcmath is present, then create an association
webmaster@1 174 $assoc_handle = '';
webmaster@1 175 if (function_exists('bcadd')) {
webmaster@1 176 $assoc_handle = openid_association($op_endpoint);
webmaster@1 177 }
webmaster@1 178
webmaster@1 179 // Now that there is an association created, move on
webmaster@1 180 // to request authentication from the IdP
webmaster@1 181 // First check for LocalID. If not found, check for Delegate. Fall
webmaster@1 182 // back to $claimed_id if neither is found.
webmaster@1 183 if (!empty($services[0]['localid'])) {
webmaster@1 184 $identity = $services[0]['localid'];
webmaster@1 185 }
webmaster@1 186 else if (!empty($services[0]['delegate'])) {
webmaster@1 187 $identity = $services[0]['delegate'];
webmaster@1 188 }
webmaster@1 189 else {
webmaster@1 190 $identity = $claimed_id;
webmaster@1 191 }
webmaster@1 192
webmaster@1 193 if (isset($services[0]['types']) && is_array($services[0]['types']) && in_array(OPENID_NS_2_0 .'/server', $services[0]['types'])) {
webmaster@1 194 $identity = 'http://specs.openid.net/auth/2.0/identifier_select';
webmaster@1 195 }
webmaster@1 196 $authn_request = openid_authentication_request($claimed_id, $identity, $return_to, $assoc_handle, $services[0]['version']);
webmaster@1 197
webmaster@1 198 if ($services[0]['version'] == 2) {
webmaster@1 199 openid_redirect($op_endpoint, $authn_request);
webmaster@1 200 }
webmaster@1 201 else {
webmaster@1 202 openid_redirect_http($op_endpoint, $authn_request);
webmaster@1 203 }
webmaster@1 204 }
webmaster@1 205
webmaster@1 206 /**
webmaster@1 207 * Completes OpenID authentication by validating returned data from the OpenID
webmaster@1 208 * Provider.
webmaster@1 209 *
webmaster@1 210 * @param $response Array of returned values from the OpenID Provider.
webmaster@1 211 *
webmaster@1 212 * @return $response Response values for further processing with
webmaster@1 213 * $response['status'] set to one of 'success', 'failed' or 'cancel'.
webmaster@1 214 */
webmaster@1 215 function openid_complete($response = array()) {
webmaster@1 216 module_load_include('inc', 'openid');
webmaster@1 217
webmaster@1 218 if (count($response) == 0) {
webmaster@1 219 $response = _openid_response();
webmaster@1 220 }
webmaster@1 221
webmaster@1 222 // Default to failed response
webmaster@1 223 $response['status'] = 'failed';
webmaster@1 224 if (isset($_SESSION['openid']['service']['uri']) && isset($_SESSION['openid']['claimed_id'])) {
webmaster@1 225 $service = $_SESSION['openid']['service'];
webmaster@1 226 $claimed_id = $_SESSION['openid']['claimed_id'];
webmaster@1 227 unset($_SESSION['openid']['service']);
webmaster@1 228 unset($_SESSION['openid']['claimed_id']);
webmaster@1 229 if (isset($response['openid.mode'])) {
webmaster@1 230 if ($response['openid.mode'] == 'cancel') {
webmaster@1 231 $response['status'] = 'cancel';
webmaster@1 232 }
webmaster@1 233 else {
webmaster@1 234 if (openid_verify_assertion($service['uri'], $response)) {
webmaster@1 235 // If the returned claimed_id is different from the session claimed_id,
webmaster@1 236 // then we need to do discovery and make sure the op_endpoint matches.
webmaster@1 237 if ($service['version'] == 2 && $response['openid.claimed_id'] != $claimed_id) {
webmaster@1 238 $disco = openid_discovery($response['openid.claimed_id']);
webmaster@1 239 if ($disco[0]['uri'] != $service['uri']) {
webmaster@1 240 return $response;
webmaster@1 241 }
webmaster@1 242 }
webmaster@1 243 else {
webmaster@1 244 $response['openid.claimed_id'] = $claimed_id;
webmaster@1 245 }
webmaster@1 246 $response['status'] = 'success';
webmaster@1 247 }
webmaster@1 248 }
webmaster@1 249 }
webmaster@1 250 }
webmaster@1 251 return $response;
webmaster@1 252 }
webmaster@1 253
webmaster@1 254 /**
webmaster@1 255 * Perform discovery on a claimed ID to determine the OpenID provider endpoint.
webmaster@1 256 *
webmaster@1 257 * @param $claimed_id The OpenID URL to perform discovery on.
webmaster@1 258 *
webmaster@1 259 * @return Array of services discovered (including OpenID version, endpoint
webmaster@1 260 * URI, etc).
webmaster@1 261 */
webmaster@1 262 function openid_discovery($claimed_id) {
webmaster@1 263 module_load_include('inc', 'openid');
webmaster@1 264 module_load_include('inc', 'openid', 'xrds');
webmaster@1 265
webmaster@1 266 $services = array();
webmaster@1 267
webmaster@1 268 $xrds_url = $claimed_id;
webmaster@1 269 if (_openid_is_xri($claimed_id)) {
webmaster@1 270 $xrds_url = 'http://xri.net/'. $claimed_id;
webmaster@1 271 }
webmaster@1 272 $url = @parse_url($xrds_url);
webmaster@1 273 if ($url['scheme'] == 'http' || $url['scheme'] == 'https') {
webmaster@1 274 // For regular URLs, try Yadis resolution first, then HTML-based discovery
webmaster@1 275 $headers = array('Accept' => 'application/xrds+xml');
webmaster@1 276 $result = drupal_http_request($xrds_url, $headers);
webmaster@1 277
webmaster@1 278 if (!isset($result->error)) {
webmaster@1 279 if (isset($result->headers['Content-Type']) && preg_match("/application\/xrds\+xml/", $result->headers['Content-Type'])) {
webmaster@1 280 // Parse XML document to find URL
webmaster@1 281 $services = xrds_parse($result->data);
webmaster@1 282 }
webmaster@1 283 else {
webmaster@1 284 $xrds_url = NULL;
webmaster@1 285 if (isset($result->headers['X-XRDS-Location'])) {
webmaster@1 286 $xrds_url = $result->headers['X-XRDS-Location'];
webmaster@1 287 }
webmaster@1 288 else {
webmaster@1 289 // Look for meta http-equiv link in HTML head
webmaster@1 290 $xrds_url = _openid_meta_httpequiv('X-XRDS-Location', $result->data);
webmaster@1 291 }
webmaster@1 292 if (!empty($xrds_url)) {
webmaster@1 293 $headers = array('Accept' => 'application/xrds+xml');
webmaster@1 294 $xrds_result = drupal_http_request($xrds_url, $headers);
webmaster@1 295 if (!isset($xrds_result->error)) {
webmaster@1 296 $services = xrds_parse($xrds_result->data);
webmaster@1 297 }
webmaster@1 298 }
webmaster@1 299 }
webmaster@1 300
webmaster@1 301 // Check for HTML delegation
webmaster@1 302 if (count($services) == 0) {
webmaster@1 303 // Look for 2.0 links
webmaster@1 304 $uri = _openid_link_href('openid2.provider', $result->data);
webmaster@1 305 $delegate = _openid_link_href('openid2.local_id', $result->data);
webmaster@1 306 $version = 2;
webmaster@1 307
webmaster@1 308 // 1.0 links
webmaster@1 309 if (empty($uri)) {
webmaster@1 310 $uri = _openid_link_href('openid.server', $result->data);
webmaster@1 311 $delegate = _openid_link_href('openid.delegate', $result->data);
webmaster@1 312 $version = 1;
webmaster@1 313 }
webmaster@1 314 if (!empty($uri)) {
webmaster@1 315 $services[] = array('uri' => $uri, 'delegate' => $delegate, 'version' => $version);
webmaster@1 316 }
webmaster@1 317 }
webmaster@1 318 }
webmaster@1 319 }
webmaster@1 320 if (!$services) {
webmaster@1 321 module_invoke('system', 'check_http_request');
webmaster@1 322 }
webmaster@1 323 return $services;
webmaster@1 324 }
webmaster@1 325
webmaster@1 326 /**
webmaster@1 327 * Attempt to create a shared secret with the OpenID Provider.
webmaster@1 328 *
webmaster@1 329 * @param $op_endpoint URL of the OpenID Provider endpoint.
webmaster@1 330 *
webmaster@1 331 * @return $assoc_handle The association handle.
webmaster@1 332 */
webmaster@1 333 function openid_association($op_endpoint) {
webmaster@1 334 module_load_include('inc', 'openid');
webmaster@1 335
webmaster@1 336 // Remove Old Associations:
webmaster@1 337 db_query("DELETE FROM {openid_association} WHERE created + expires_in < %d", time());
webmaster@1 338
webmaster@1 339 // Check to see if we have an association for this IdP already
webmaster@1 340 $assoc_handle = db_result(db_query("SELECT assoc_handle FROM {openid_association} WHERE idp_endpoint_uri = '%s'", $op_endpoint));
webmaster@1 341 if (empty($assoc_handle)) {
webmaster@1 342 $mod = OPENID_DH_DEFAULT_MOD;
webmaster@1 343 $gen = OPENID_DH_DEFAULT_GEN;
webmaster@1 344 $r = _openid_dh_rand($mod);
webmaster@1 345 $private = bcadd($r, 1);
webmaster@1 346 $public = bcpowmod($gen, $private, $mod);
webmaster@1 347
webmaster@1 348 // If there is no existing association, then request one
webmaster@1 349 $assoc_request = openid_association_request($public);
webmaster@1 350 $assoc_message = _openid_encode_message(_openid_create_message($assoc_request));
webmaster@1 351 $assoc_headers = array('Content-Type' => 'application/x-www-form-urlencoded; charset=utf-8');
webmaster@1 352 $assoc_result = drupal_http_request($op_endpoint, $assoc_headers, 'POST', $assoc_message);
webmaster@1 353 if (isset($assoc_result->error)) {
webmaster@1 354 module_invoke('system', 'check_http_request');
webmaster@1 355 return FALSE;
webmaster@1 356 }
webmaster@1 357
webmaster@1 358 $assoc_response = _openid_parse_message($assoc_result->data);
webmaster@1 359 if (isset($assoc_response['mode']) && $assoc_response['mode'] == 'error') {
webmaster@1 360 module_invoke('system', 'check_http_request');
webmaster@1 361 return FALSE;
webmaster@1 362 }
webmaster@1 363
webmaster@1 364 if ($assoc_response['session_type'] == 'DH-SHA1') {
webmaster@1 365 $spub = _openid_dh_base64_to_long($assoc_response['dh_server_public']);
webmaster@1 366 $enc_mac_key = base64_decode($assoc_response['enc_mac_key']);
webmaster@1 367 $shared = bcpowmod($spub, $private, $mod);
webmaster@1 368 $assoc_response['mac_key'] = base64_encode(_openid_dh_xorsecret($shared, $enc_mac_key));
webmaster@1 369 }
webmaster@1 370 db_query("INSERT INTO {openid_association} (idp_endpoint_uri, session_type, assoc_handle, assoc_type, expires_in, mac_key, created) VALUES('%s', '%s', '%s', '%s', %d, '%s', %d)",
webmaster@1 371 $op_endpoint, $assoc_response['session_type'], $assoc_response['assoc_handle'], $assoc_response['assoc_type'], $assoc_response['expires_in'], $assoc_response['mac_key'], time());
webmaster@1 372
webmaster@1 373 $assoc_handle = $assoc_response['assoc_handle'];
webmaster@1 374 }
webmaster@1 375
webmaster@1 376 return $assoc_handle;
webmaster@1 377 }
webmaster@1 378
webmaster@1 379 /**
webmaster@1 380 * Authenticate a user or attempt registration.
webmaster@1 381 *
webmaster@1 382 * @param $response Response values from the OpenID Provider.
webmaster@1 383 */
webmaster@1 384 function openid_authentication($response) {
webmaster@1 385 module_load_include('inc', 'openid');
webmaster@1 386
webmaster@1 387 $identity = $response['openid.claimed_id'];
webmaster@1 388
webmaster@1 389 $account = user_external_load($identity);
webmaster@1 390 if (isset($account->uid)) {
webmaster@1 391 if (!variable_get('user_email_verification', TRUE) || $account->login) {
webmaster@1 392 user_external_login($account, $_SESSION['openid']['user_login_values']);
webmaster@1 393 }
webmaster@1 394 else {
webmaster@1 395 drupal_set_message(t('You must validate your email address for this account before logging in via OpenID'));
webmaster@1 396 }
webmaster@1 397 }
webmaster@1 398 elseif (variable_get('user_register', 1)) {
webmaster@1 399 // Register new user
webmaster@1 400 $form_state['redirect'] = NULL;
webmaster@1 401 $form_state['values']['name'] = (empty($response['openid.sreg.nickname'])) ? $identity : $response['openid.sreg.nickname'];
webmaster@1 402 $form_state['values']['mail'] = (empty($response['openid.sreg.email'])) ? '' : $response['openid.sreg.email'];
webmaster@1 403 $form_state['values']['pass'] = user_password();
webmaster@1 404 $form_state['values']['status'] = variable_get('user_register', 1) == 1;
webmaster@1 405 $form_state['values']['response'] = $response;
webmaster@1 406 $form_state['values']['auth_openid'] = $identity;
webmaster@1 407 $form = drupal_retrieve_form('user_register', $form_state);
webmaster@1 408 drupal_prepare_form('user_register', $form, $form_state);
webmaster@1 409 drupal_validate_form('user_register', $form, $form_state);
webmaster@1 410 if (form_get_errors()) {
webmaster@1 411 // We were unable to register a valid new user, redirect to standard
webmaster@1 412 // user/register and prefill with the values we received.
webmaster@1 413 drupal_set_message(t('OpenID registration failed for the reasons listed. You may register now, or if you already have an account you can <a href="@login">log in</a> now and add your OpenID under "My Account"', array('@login' => url('user/login'))), 'error');
webmaster@1 414 $_SESSION['openid']['values'] = $form_state['values'];
webmaster@1 415 // We'll want to redirect back to the same place.
webmaster@1 416 $destination = drupal_get_destination();
webmaster@1 417 unset($_REQUEST['destination']);
webmaster@1 418 drupal_goto('user/register', $destination);
webmaster@1 419 }
webmaster@1 420 else {
webmaster@1 421 unset($form_state['values']['response']);
webmaster@1 422 $account = user_save('', $form_state['values']);
webmaster@1 423 // Terminate if an error occured during user_save().
webmaster@1 424 if (!$account) {
webmaster@1 425 drupal_set_message(t("Error saving user account."), 'error');
webmaster@1 426 drupal_goto();
webmaster@1 427 }
webmaster@1 428 user_external_login($account);
webmaster@1 429 }
webmaster@1 430 drupal_redirect_form($form, $form_state['redirect']);
webmaster@1 431 }
webmaster@1 432 else {
webmaster@1 433 drupal_set_message(t('Only site administrators can create new user accounts.'), 'error');
webmaster@1 434 }
webmaster@1 435 drupal_goto();
webmaster@1 436 }
webmaster@1 437
webmaster@1 438 function openid_association_request($public) {
webmaster@1 439 module_load_include('inc', 'openid');
webmaster@1 440
webmaster@1 441 $request = array(
webmaster@1 442 'openid.ns' => OPENID_NS_2_0,
webmaster@1 443 'openid.mode' => 'associate',
webmaster@1 444 'openid.session_type' => 'DH-SHA1',
webmaster@1 445 'openid.assoc_type' => 'HMAC-SHA1'
webmaster@1 446 );
webmaster@1 447
webmaster@1 448 if ($request['openid.session_type'] == 'DH-SHA1' || $request['openid.session_type'] == 'DH-SHA256') {
webmaster@1 449 $cpub = _openid_dh_long_to_base64($public);
webmaster@1 450 $request['openid.dh_consumer_public'] = $cpub;
webmaster@1 451 }
webmaster@1 452
webmaster@1 453 return $request;
webmaster@1 454 }
webmaster@1 455
webmaster@1 456 function openid_authentication_request($claimed_id, $identity, $return_to = '', $assoc_handle = '', $version = 2) {
webmaster@1 457 module_load_include('inc', 'openid');
webmaster@1 458
webmaster@1 459 $ns = ($version == 2) ? OPENID_NS_2_0 : OPENID_NS_1_0;
webmaster@1 460 $request = array(
webmaster@1 461 'openid.ns' => $ns,
webmaster@1 462 'openid.mode' => 'checkid_setup',
webmaster@1 463 'openid.identity' => $identity,
webmaster@1 464 'openid.claimed_id' => $claimed_id,
webmaster@1 465 'openid.assoc_handle' => $assoc_handle,
webmaster@1 466 'openid.return_to' => $return_to,
webmaster@1 467 );
webmaster@1 468
webmaster@1 469 if ($version == 2) {
webmaster@1 470 $request['openid.realm'] = url('', array('absolute' => TRUE));
webmaster@1 471 }
webmaster@1 472 else {
webmaster@1 473 $request['openid.trust_root'] = $realm;
webmaster@1 474 }
webmaster@1 475
webmaster@1 476 // Simple Registration
webmaster@1 477 $request['openid.sreg.required'] = 'nickname,email';
webmaster@1 478 $request['openid.ns.sreg'] = "http://openid.net/extensions/sreg/1.1";
webmaster@1 479
webmaster@1 480 $request = array_merge($request, module_invoke_all('openid', 'request', $request));
webmaster@1 481
webmaster@1 482 return $request;
webmaster@1 483 }
webmaster@1 484
webmaster@1 485 /**
webmaster@1 486 * Attempt to verify the response received from the OpenID Provider.
webmaster@1 487 *
webmaster@1 488 * @param $op_endpoint The OpenID Provider URL.
webmaster@1 489 * @param $response Array of repsonse values from the provider.
webmaster@1 490 *
webmaster@1 491 * @return boolean
webmaster@1 492 */
webmaster@1 493 function openid_verify_assertion($op_endpoint, $response) {
webmaster@1 494 module_load_include('inc', 'openid');
webmaster@1 495
webmaster@1 496 $valid = FALSE;
webmaster@1 497
webmaster@1 498 $association = db_fetch_object(db_query("SELECT * FROM {openid_association} WHERE assoc_handle = '%s'", $response['openid.assoc_handle']));
webmaster@1 499 if ($association && isset($association->session_type)) {
webmaster@1 500 $keys_to_sign = explode(',', $response['openid.signed']);
webmaster@1 501 $self_sig = _openid_signature($association, $response, $keys_to_sign);
webmaster@1 502 if ($self_sig == $response['openid.sig']) {
webmaster@1 503 $valid = TRUE;
webmaster@1 504 }
webmaster@1 505 else {
webmaster@1 506 $valid = FALSE;
webmaster@1 507 }
webmaster@1 508 }
webmaster@1 509 else {
webmaster@1 510 $request = $response;
webmaster@1 511 $request['openid.mode'] = 'check_authentication';
webmaster@1 512 $message = _openid_create_message($request);
webmaster@1 513 $headers = array('Content-Type' => 'application/x-www-form-urlencoded; charset=utf-8');
webmaster@1 514 $result = drupal_http_request($op_endpoint, $headers, 'POST', _openid_encode_message($message));
webmaster@1 515 if (!isset($result->error)) {
webmaster@1 516 $response = _openid_parse_message($result->data);
webmaster@1 517 if (strtolower(trim($response['is_valid'])) == 'true') {
webmaster@1 518 $valid = TRUE;
webmaster@1 519 }
webmaster@1 520 else {
webmaster@1 521 $valid = FALSE;
webmaster@1 522 }
webmaster@1 523 }
webmaster@1 524 }
webmaster@1 525 if (!$valid) {
webmaster@1 526 module_invoke('system', 'check_http_request');
webmaster@1 527 }
webmaster@1 528 return $valid;
webmaster@1 529 }