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annotate modules/openid/openid.module @ 5:2427550111ae 6.2

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Drupal 6.2
author Franck Deroche <webmaster@defr.org>
date Tue, 23 Dec 2008 14:30:08 +0100
parents c1f4ac30525a
children fff6d4c8c043
rev   line source
webmaster@1 1 <?php
webmaster@5 2 // $Id: openid.module,v 1.19.2.1 2008/04/09 21:11:48 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@5 33 'access callback' => 'user_edit_access',
webmaster@5 34 'access arguments' => array(1),
webmaster@1 35 'type' => MENU_CALLBACK,
webmaster@1 36 'file' => 'openid.pages.inc',
webmaster@1 37 );
webmaster@1 38 return $items;
webmaster@1 39 }
webmaster@1 40
webmaster@1 41 /**
webmaster@1 42 * Implementation of hook_help().
webmaster@1 43 */
webmaster@1 44 function openid_help($path, $arg) {
webmaster@1 45 switch ($path) {
webmaster@1 46
webmaster@1 47 case 'user/%/openid':
webmaster@1 48 $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 49 $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 50 $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 51 return $output;
webmaster@1 52
webmaster@1 53 case 'admin/help#openid':
webmaster@1 54 $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 55 $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 56 $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 57 $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 58 $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 59 return $output;
webmaster@1 60 }
webmaster@1 61 }
webmaster@1 62
webmaster@1 63 /**
webmaster@1 64 * Implementation of hook_user().
webmaster@1 65 */
webmaster@1 66 function openid_user($op, &$edit, &$account, $category = NULL) {
webmaster@1 67 if ($op == 'insert' && isset($_SESSION['openid']['values'])) {
webmaster@1 68 // The user has registered after trying to login via OpenID.
webmaster@1 69 if (variable_get('user_email_verification', TRUE)) {
webmaster@1 70 drupal_set_message(t('Once you have verified your email address, you may log in via OpenID.'));
webmaster@1 71 }
webmaster@1 72 unset($_SESSION['openid']);
webmaster@1 73 }
webmaster@1 74 }
webmaster@1 75
webmaster@1 76 /**
webmaster@1 77 * Implementation of hook_form_alter : adds OpenID login to the login forms.
webmaster@1 78 */
webmaster@1 79 function openid_form_alter(&$form, $form_state, $form_id) {
webmaster@1 80 if ($form_id == 'user_login_block' || $form_id == 'user_login') {
webmaster@1 81 drupal_add_css(drupal_get_path('module', 'openid') .'/openid.css', 'module');
webmaster@1 82 drupal_add_js(drupal_get_path('module', 'openid') .'/openid.js');
webmaster@1 83 if (!empty($form_state['post']['openid_identifier'])) {
webmaster@1 84 $form['name']['#required'] = FALSE;
webmaster@1 85 $form['pass']['#required'] = FALSE;
webmaster@1 86 unset($form['#submit']);
webmaster@1 87 $form['#validate'] = array('openid_login_validate');
webmaster@1 88 }
webmaster@1 89
webmaster@1 90 $items = array();
webmaster@1 91 $items[] = array(
webmaster@1 92 'data' => l(t('Log in using OpenID'), '#'),
webmaster@1 93 'class' => 'openid-link',
webmaster@1 94 );
webmaster@1 95 $items[] = array(
webmaster@1 96 'data' => l(t('Cancel OpenID login'), '#'),
webmaster@1 97 'class' => 'user-link',
webmaster@1 98 );
webmaster@1 99
webmaster@1 100 $form['openid_links'] = array(
webmaster@1 101 '#value' => theme('item_list', $items),
webmaster@1 102 '#weight' => 1,
webmaster@1 103 );
webmaster@1 104
webmaster@1 105 $form['links']['#weight'] = 2;
webmaster@1 106
webmaster@1 107 $form['openid_identifier'] = array(
webmaster@1 108 '#type' => 'textfield',
webmaster@1 109 '#title' => t('Log in using OpenID'),
webmaster@1 110 '#size' => ($form_id == 'user_login') ? 58 : 13,
webmaster@1 111 '#maxlength' => 255,
webmaster@1 112 '#weight' => -1,
webmaster@1 113 '#description' => l(t('What is OpenID?'), 'http://openid.net/', array('external' => TRUE)),
webmaster@1 114 );
webmaster@1 115 $form['openid.return_to'] = array('#type' => 'hidden', '#value' => url('openid/authenticate', array('absolute' => TRUE, 'query' => drupal_get_destination())));
webmaster@1 116 }
webmaster@1 117 elseif ($form_id == 'user_register' && isset($_SESSION['openid'])) {
webmaster@1 118 // We were unable to auto-register a new user. Prefill the registration
webmaster@1 119 // form with the values we have.
webmaster@1 120 $form['name']['#default_value'] = $_SESSION['openid']['values']['name'];
webmaster@1 121 $form['mail']['#default_value'] = $_SESSION['openid']['values']['mail'];
webmaster@1 122 // If user_email_verification is off, hide the password field and just fill
webmaster@1 123 // with random password to avoid confusion.
webmaster@1 124 if (!variable_get('user_email_verification', TRUE)) {
webmaster@1 125 $form['pass']['#type'] = 'hidden';
webmaster@1 126 $form['pass']['#value'] = user_password();
webmaster@1 127 }
webmaster@1 128 $form['auth_openid'] = array('#type' => 'hidden', '#value' => $_SESSION['openid']['values']['auth_openid']);
webmaster@1 129 }
webmaster@1 130 return $form;
webmaster@1 131 }
webmaster@1 132
webmaster@1 133 /**
webmaster@1 134 * Login form _validate hook
webmaster@1 135 */
webmaster@1 136 function openid_login_validate($form, &$form_state) {
webmaster@1 137 $return_to = $form_state['values']['openid.return_to'];
webmaster@1 138 if (empty($return_to)) {
webmaster@1 139 $return_to = url('', array('absolute' => TRUE));
webmaster@1 140 }
webmaster@1 141
webmaster@1 142 openid_begin($form_state['values']['openid_identifier'], $return_to, $form_state['values']);
webmaster@1 143 }
webmaster@1 144
webmaster@1 145 /**
webmaster@1 146 * The initial step of OpenID authentication responsible for the following:
webmaster@1 147 * - Perform discovery on the claimed OpenID.
webmaster@1 148 * - If possible, create an association with the Provider's endpoint.
webmaster@1 149 * - Create the authentication request.
webmaster@1 150 * - Perform the appropriate redirect.
webmaster@1 151 *
webmaster@1 152 * @param $claimed_id The OpenID to authenticate
webmaster@1 153 * @param $return_to The endpoint to return to from the OpenID Provider
webmaster@1 154 */
webmaster@1 155 function openid_begin($claimed_id, $return_to = '', $form_values = array()) {
webmaster@1 156 module_load_include('inc', 'openid');
webmaster@1 157
webmaster@1 158 $claimed_id = _openid_normalize($claimed_id);
webmaster@1 159
webmaster@1 160 $services = openid_discovery($claimed_id);
webmaster@1 161 if (count($services) == 0) {
webmaster@1 162 form_set_error('openid_identifier', t('Sorry, that is not a valid OpenID. Please ensure you have spelled your ID correctly.'));
webmaster@1 163 return;
webmaster@1 164 }
webmaster@1 165
webmaster@1 166 // Store discovered information in the users' session so we don't have to rediscover.
webmaster@1 167 $_SESSION['openid']['service'] = $services[0];
webmaster@1 168 // Store the claimed id
webmaster@1 169 $_SESSION['openid']['claimed_id'] = $claimed_id;
webmaster@1 170 // Store the login form values so we can pass them to
webmaster@1 171 // user_exteral_login later.
webmaster@1 172 $_SESSION['openid']['user_login_values'] = $form_values;
webmaster@1 173
webmaster@1 174 $op_endpoint = $services[0]['uri'];
webmaster@1 175 // If bcmath is present, then create an association
webmaster@1 176 $assoc_handle = '';
webmaster@1 177 if (function_exists('bcadd')) {
webmaster@1 178 $assoc_handle = openid_association($op_endpoint);
webmaster@1 179 }
webmaster@1 180
webmaster@1 181 // Now that there is an association created, move on
webmaster@1 182 // to request authentication from the IdP
webmaster@1 183 // First check for LocalID. If not found, check for Delegate. Fall
webmaster@1 184 // back to $claimed_id if neither is found.
webmaster@1 185 if (!empty($services[0]['localid'])) {
webmaster@1 186 $identity = $services[0]['localid'];
webmaster@1 187 }
webmaster@1 188 else if (!empty($services[0]['delegate'])) {
webmaster@1 189 $identity = $services[0]['delegate'];
webmaster@1 190 }
webmaster@1 191 else {
webmaster@1 192 $identity = $claimed_id;
webmaster@1 193 }
webmaster@1 194
webmaster@1 195 if (isset($services[0]['types']) && is_array($services[0]['types']) && in_array(OPENID_NS_2_0 .'/server', $services[0]['types'])) {
webmaster@1 196 $identity = 'http://specs.openid.net/auth/2.0/identifier_select';
webmaster@1 197 }
webmaster@1 198 $authn_request = openid_authentication_request($claimed_id, $identity, $return_to, $assoc_handle, $services[0]['version']);
webmaster@1 199
webmaster@1 200 if ($services[0]['version'] == 2) {
webmaster@1 201 openid_redirect($op_endpoint, $authn_request);
webmaster@1 202 }
webmaster@1 203 else {
webmaster@1 204 openid_redirect_http($op_endpoint, $authn_request);
webmaster@1 205 }
webmaster@1 206 }
webmaster@1 207
webmaster@1 208 /**
webmaster@1 209 * Completes OpenID authentication by validating returned data from the OpenID
webmaster@1 210 * Provider.
webmaster@1 211 *
webmaster@1 212 * @param $response Array of returned values from the OpenID Provider.
webmaster@1 213 *
webmaster@1 214 * @return $response Response values for further processing with
webmaster@1 215 * $response['status'] set to one of 'success', 'failed' or 'cancel'.
webmaster@1 216 */
webmaster@1 217 function openid_complete($response = array()) {
webmaster@1 218 module_load_include('inc', 'openid');
webmaster@1 219
webmaster@1 220 if (count($response) == 0) {
webmaster@1 221 $response = _openid_response();
webmaster@1 222 }
webmaster@1 223
webmaster@1 224 // Default to failed response
webmaster@1 225 $response['status'] = 'failed';
webmaster@1 226 if (isset($_SESSION['openid']['service']['uri']) && isset($_SESSION['openid']['claimed_id'])) {
webmaster@1 227 $service = $_SESSION['openid']['service'];
webmaster@1 228 $claimed_id = $_SESSION['openid']['claimed_id'];
webmaster@1 229 unset($_SESSION['openid']['service']);
webmaster@1 230 unset($_SESSION['openid']['claimed_id']);
webmaster@1 231 if (isset($response['openid.mode'])) {
webmaster@1 232 if ($response['openid.mode'] == 'cancel') {
webmaster@1 233 $response['status'] = 'cancel';
webmaster@1 234 }
webmaster@1 235 else {
webmaster@1 236 if (openid_verify_assertion($service['uri'], $response)) {
webmaster@1 237 // If the returned claimed_id is different from the session claimed_id,
webmaster@1 238 // then we need to do discovery and make sure the op_endpoint matches.
webmaster@1 239 if ($service['version'] == 2 && $response['openid.claimed_id'] != $claimed_id) {
webmaster@1 240 $disco = openid_discovery($response['openid.claimed_id']);
webmaster@1 241 if ($disco[0]['uri'] != $service['uri']) {
webmaster@1 242 return $response;
webmaster@1 243 }
webmaster@1 244 }
webmaster@1 245 else {
webmaster@1 246 $response['openid.claimed_id'] = $claimed_id;
webmaster@1 247 }
webmaster@1 248 $response['status'] = 'success';
webmaster@1 249 }
webmaster@1 250 }
webmaster@1 251 }
webmaster@1 252 }
webmaster@1 253 return $response;
webmaster@1 254 }
webmaster@1 255
webmaster@1 256 /**
webmaster@1 257 * Perform discovery on a claimed ID to determine the OpenID provider endpoint.
webmaster@1 258 *
webmaster@1 259 * @param $claimed_id The OpenID URL to perform discovery on.
webmaster@1 260 *
webmaster@1 261 * @return Array of services discovered (including OpenID version, endpoint
webmaster@1 262 * URI, etc).
webmaster@1 263 */
webmaster@1 264 function openid_discovery($claimed_id) {
webmaster@1 265 module_load_include('inc', 'openid');
webmaster@1 266 module_load_include('inc', 'openid', 'xrds');
webmaster@1 267
webmaster@1 268 $services = array();
webmaster@1 269
webmaster@1 270 $xrds_url = $claimed_id;
webmaster@1 271 if (_openid_is_xri($claimed_id)) {
webmaster@1 272 $xrds_url = 'http://xri.net/'. $claimed_id;
webmaster@1 273 }
webmaster@1 274 $url = @parse_url($xrds_url);
webmaster@1 275 if ($url['scheme'] == 'http' || $url['scheme'] == 'https') {
webmaster@1 276 // For regular URLs, try Yadis resolution first, then HTML-based discovery
webmaster@1 277 $headers = array('Accept' => 'application/xrds+xml');
webmaster@1 278 $result = drupal_http_request($xrds_url, $headers);
webmaster@1 279
webmaster@1 280 if (!isset($result->error)) {
webmaster@1 281 if (isset($result->headers['Content-Type']) && preg_match("/application\/xrds\+xml/", $result->headers['Content-Type'])) {
webmaster@1 282 // Parse XML document to find URL
webmaster@1 283 $services = xrds_parse($result->data);
webmaster@1 284 }
webmaster@1 285 else {
webmaster@1 286 $xrds_url = NULL;
webmaster@1 287 if (isset($result->headers['X-XRDS-Location'])) {
webmaster@1 288 $xrds_url = $result->headers['X-XRDS-Location'];
webmaster@1 289 }
webmaster@1 290 else {
webmaster@1 291 // Look for meta http-equiv link in HTML head
webmaster@1 292 $xrds_url = _openid_meta_httpequiv('X-XRDS-Location', $result->data);
webmaster@1 293 }
webmaster@1 294 if (!empty($xrds_url)) {
webmaster@1 295 $headers = array('Accept' => 'application/xrds+xml');
webmaster@1 296 $xrds_result = drupal_http_request($xrds_url, $headers);
webmaster@1 297 if (!isset($xrds_result->error)) {
webmaster@1 298 $services = xrds_parse($xrds_result->data);
webmaster@1 299 }
webmaster@1 300 }
webmaster@1 301 }
webmaster@1 302
webmaster@1 303 // Check for HTML delegation
webmaster@1 304 if (count($services) == 0) {
webmaster@1 305 // Look for 2.0 links
webmaster@1 306 $uri = _openid_link_href('openid2.provider', $result->data);
webmaster@1 307 $delegate = _openid_link_href('openid2.local_id', $result->data);
webmaster@1 308 $version = 2;
webmaster@1 309
webmaster@1 310 // 1.0 links
webmaster@1 311 if (empty($uri)) {
webmaster@1 312 $uri = _openid_link_href('openid.server', $result->data);
webmaster@1 313 $delegate = _openid_link_href('openid.delegate', $result->data);
webmaster@1 314 $version = 1;
webmaster@1 315 }
webmaster@1 316 if (!empty($uri)) {
webmaster@1 317 $services[] = array('uri' => $uri, 'delegate' => $delegate, 'version' => $version);
webmaster@1 318 }
webmaster@1 319 }
webmaster@1 320 }
webmaster@1 321 }
webmaster@1 322 if (!$services) {
webmaster@1 323 module_invoke('system', 'check_http_request');
webmaster@1 324 }
webmaster@1 325 return $services;
webmaster@1 326 }
webmaster@1 327
webmaster@1 328 /**
webmaster@1 329 * Attempt to create a shared secret with the OpenID Provider.
webmaster@1 330 *
webmaster@1 331 * @param $op_endpoint URL of the OpenID Provider endpoint.
webmaster@1 332 *
webmaster@1 333 * @return $assoc_handle The association handle.
webmaster@1 334 */
webmaster@1 335 function openid_association($op_endpoint) {
webmaster@1 336 module_load_include('inc', 'openid');
webmaster@1 337
webmaster@1 338 // Remove Old Associations:
webmaster@1 339 db_query("DELETE FROM {openid_association} WHERE created + expires_in < %d", time());
webmaster@1 340
webmaster@1 341 // Check to see if we have an association for this IdP already
webmaster@1 342 $assoc_handle = db_result(db_query("SELECT assoc_handle FROM {openid_association} WHERE idp_endpoint_uri = '%s'", $op_endpoint));
webmaster@1 343 if (empty($assoc_handle)) {
webmaster@1 344 $mod = OPENID_DH_DEFAULT_MOD;
webmaster@1 345 $gen = OPENID_DH_DEFAULT_GEN;
webmaster@1 346 $r = _openid_dh_rand($mod);
webmaster@1 347 $private = bcadd($r, 1);
webmaster@1 348 $public = bcpowmod($gen, $private, $mod);
webmaster@1 349
webmaster@1 350 // If there is no existing association, then request one
webmaster@1 351 $assoc_request = openid_association_request($public);
webmaster@1 352 $assoc_message = _openid_encode_message(_openid_create_message($assoc_request));
webmaster@1 353 $assoc_headers = array('Content-Type' => 'application/x-www-form-urlencoded; charset=utf-8');
webmaster@1 354 $assoc_result = drupal_http_request($op_endpoint, $assoc_headers, 'POST', $assoc_message);
webmaster@1 355 if (isset($assoc_result->error)) {
webmaster@1 356 module_invoke('system', 'check_http_request');
webmaster@1 357 return FALSE;
webmaster@1 358 }
webmaster@1 359
webmaster@1 360 $assoc_response = _openid_parse_message($assoc_result->data);
webmaster@1 361 if (isset($assoc_response['mode']) && $assoc_response['mode'] == 'error') {
webmaster@1 362 module_invoke('system', 'check_http_request');
webmaster@1 363 return FALSE;
webmaster@1 364 }
webmaster@1 365
webmaster@1 366 if ($assoc_response['session_type'] == 'DH-SHA1') {
webmaster@1 367 $spub = _openid_dh_base64_to_long($assoc_response['dh_server_public']);
webmaster@1 368 $enc_mac_key = base64_decode($assoc_response['enc_mac_key']);
webmaster@1 369 $shared = bcpowmod($spub, $private, $mod);
webmaster@1 370 $assoc_response['mac_key'] = base64_encode(_openid_dh_xorsecret($shared, $enc_mac_key));
webmaster@1 371 }
webmaster@1 372 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@1 373 $op_endpoint, $assoc_response['session_type'], $assoc_response['assoc_handle'], $assoc_response['assoc_type'], $assoc_response['expires_in'], $assoc_response['mac_key'], time());
webmaster@1 374
webmaster@1 375 $assoc_handle = $assoc_response['assoc_handle'];
webmaster@1 376 }
webmaster@1 377
webmaster@1 378 return $assoc_handle;
webmaster@1 379 }
webmaster@1 380
webmaster@1 381 /**
webmaster@1 382 * Authenticate a user or attempt registration.
webmaster@1 383 *
webmaster@1 384 * @param $response Response values from the OpenID Provider.
webmaster@1 385 */
webmaster@1 386 function openid_authentication($response) {
webmaster@1 387 module_load_include('inc', 'openid');
webmaster@1 388
webmaster@1 389 $identity = $response['openid.claimed_id'];
webmaster@1 390
webmaster@1 391 $account = user_external_load($identity);
webmaster@1 392 if (isset($account->uid)) {
webmaster@1 393 if (!variable_get('user_email_verification', TRUE) || $account->login) {
webmaster@1 394 user_external_login($account, $_SESSION['openid']['user_login_values']);
webmaster@1 395 }
webmaster@1 396 else {
webmaster@1 397 drupal_set_message(t('You must validate your email address for this account before logging in via OpenID'));
webmaster@1 398 }
webmaster@1 399 }
webmaster@1 400 elseif (variable_get('user_register', 1)) {
webmaster@1 401 // Register new user
webmaster@1 402 $form_state['redirect'] = NULL;
webmaster@1 403 $form_state['values']['name'] = (empty($response['openid.sreg.nickname'])) ? $identity : $response['openid.sreg.nickname'];
webmaster@1 404 $form_state['values']['mail'] = (empty($response['openid.sreg.email'])) ? '' : $response['openid.sreg.email'];
webmaster@1 405 $form_state['values']['pass'] = user_password();
webmaster@1 406 $form_state['values']['status'] = variable_get('user_register', 1) == 1;
webmaster@1 407 $form_state['values']['response'] = $response;
webmaster@1 408 $form_state['values']['auth_openid'] = $identity;
webmaster@1 409 $form = drupal_retrieve_form('user_register', $form_state);
webmaster@1 410 drupal_prepare_form('user_register', $form, $form_state);
webmaster@1 411 drupal_validate_form('user_register', $form, $form_state);
webmaster@1 412 if (form_get_errors()) {
webmaster@1 413 // We were unable to register a valid new user, redirect to standard
webmaster@1 414 // user/register and prefill with the values we received.
webmaster@1 415 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@1 416 $_SESSION['openid']['values'] = $form_state['values'];
webmaster@1 417 // We'll want to redirect back to the same place.
webmaster@1 418 $destination = drupal_get_destination();
webmaster@1 419 unset($_REQUEST['destination']);
webmaster@1 420 drupal_goto('user/register', $destination);
webmaster@1 421 }
webmaster@1 422 else {
webmaster@1 423 unset($form_state['values']['response']);
webmaster@1 424 $account = user_save('', $form_state['values']);
webmaster@1 425 // Terminate if an error occured during user_save().
webmaster@1 426 if (!$account) {
webmaster@1 427 drupal_set_message(t("Error saving user account."), 'error');
webmaster@1 428 drupal_goto();
webmaster@1 429 }
webmaster@1 430 user_external_login($account);
webmaster@1 431 }
webmaster@1 432 drupal_redirect_form($form, $form_state['redirect']);
webmaster@1 433 }
webmaster@1 434 else {
webmaster@1 435 drupal_set_message(t('Only site administrators can create new user accounts.'), 'error');
webmaster@1 436 }
webmaster@1 437 drupal_goto();
webmaster@1 438 }
webmaster@1 439
webmaster@1 440 function openid_association_request($public) {
webmaster@1 441 module_load_include('inc', 'openid');
webmaster@1 442
webmaster@1 443 $request = array(
webmaster@1 444 'openid.ns' => OPENID_NS_2_0,
webmaster@1 445 'openid.mode' => 'associate',
webmaster@1 446 'openid.session_type' => 'DH-SHA1',
webmaster@1 447 'openid.assoc_type' => 'HMAC-SHA1'
webmaster@1 448 );
webmaster@1 449
webmaster@1 450 if ($request['openid.session_type'] == 'DH-SHA1' || $request['openid.session_type'] == 'DH-SHA256') {
webmaster@1 451 $cpub = _openid_dh_long_to_base64($public);
webmaster@1 452 $request['openid.dh_consumer_public'] = $cpub;
webmaster@1 453 }
webmaster@1 454
webmaster@1 455 return $request;
webmaster@1 456 }
webmaster@1 457
webmaster@1 458 function openid_authentication_request($claimed_id, $identity, $return_to = '', $assoc_handle = '', $version = 2) {
webmaster@1 459 module_load_include('inc', 'openid');
webmaster@1 460
webmaster@1 461 $ns = ($version == 2) ? OPENID_NS_2_0 : OPENID_NS_1_0;
webmaster@1 462 $request = array(
webmaster@1 463 'openid.ns' => $ns,
webmaster@1 464 'openid.mode' => 'checkid_setup',
webmaster@1 465 'openid.identity' => $identity,
webmaster@1 466 'openid.claimed_id' => $claimed_id,
webmaster@1 467 'openid.assoc_handle' => $assoc_handle,
webmaster@1 468 'openid.return_to' => $return_to,
webmaster@1 469 );
webmaster@1 470
webmaster@1 471 if ($version == 2) {
webmaster@1 472 $request['openid.realm'] = url('', array('absolute' => TRUE));
webmaster@1 473 }
webmaster@1 474 else {
webmaster@1 475 $request['openid.trust_root'] = $realm;
webmaster@1 476 }
webmaster@1 477
webmaster@1 478 // Simple Registration
webmaster@1 479 $request['openid.sreg.required'] = 'nickname,email';
webmaster@1 480 $request['openid.ns.sreg'] = "http://openid.net/extensions/sreg/1.1";
webmaster@1 481
webmaster@1 482 $request = array_merge($request, module_invoke_all('openid', 'request', $request));
webmaster@1 483
webmaster@1 484 return $request;
webmaster@1 485 }
webmaster@1 486
webmaster@1 487 /**
webmaster@1 488 * Attempt to verify the response received from the OpenID Provider.
webmaster@1 489 *
webmaster@1 490 * @param $op_endpoint The OpenID Provider URL.
webmaster@1 491 * @param $response Array of repsonse values from the provider.
webmaster@1 492 *
webmaster@1 493 * @return boolean
webmaster@1 494 */
webmaster@1 495 function openid_verify_assertion($op_endpoint, $response) {
webmaster@1 496 module_load_include('inc', 'openid');
webmaster@1 497
webmaster@1 498 $valid = FALSE;
webmaster@1 499
webmaster@1 500 $association = db_fetch_object(db_query("SELECT * FROM {openid_association} WHERE assoc_handle = '%s'", $response['openid.assoc_handle']));
webmaster@1 501 if ($association && isset($association->session_type)) {
webmaster@1 502 $keys_to_sign = explode(',', $response['openid.signed']);
webmaster@1 503 $self_sig = _openid_signature($association, $response, $keys_to_sign);
webmaster@1 504 if ($self_sig == $response['openid.sig']) {
webmaster@1 505 $valid = TRUE;
webmaster@1 506 }
webmaster@1 507 else {
webmaster@1 508 $valid = FALSE;
webmaster@1 509 }
webmaster@1 510 }
webmaster@1 511 else {
webmaster@1 512 $request = $response;
webmaster@1 513 $request['openid.mode'] = 'check_authentication';
webmaster@1 514 $message = _openid_create_message($request);
webmaster@1 515 $headers = array('Content-Type' => 'application/x-www-form-urlencoded; charset=utf-8');
webmaster@1 516 $result = drupal_http_request($op_endpoint, $headers, 'POST', _openid_encode_message($message));
webmaster@1 517 if (!isset($result->error)) {
webmaster@1 518 $response = _openid_parse_message($result->data);
webmaster@1 519 if (strtolower(trim($response['is_valid'])) == 'true') {
webmaster@1 520 $valid = TRUE;
webmaster@1 521 }
webmaster@1 522 else {
webmaster@1 523 $valid = FALSE;
webmaster@1 524 }
webmaster@1 525 }
webmaster@1 526 }
webmaster@1 527 if (!$valid) {
webmaster@1 528 module_invoke('system', 'check_http_request');
webmaster@1 529 }
webmaster@1 530 return $valid;
webmaster@1 531 }