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<?php |
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/** |
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* This class provides a simple interface for OpenID (1.1 and 2.0) authentication. |
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* Supports Yadis discovery. |
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* The authentication process is stateless/dumb. |
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* |
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* Usage: |
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* Sign-on with OpenID is a two step process: |
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* Step one is authentication with the provider: |
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* <code> |
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* $openid = new LightOpenID; |
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* $openid->identity = 'ID supplied by user'; |
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* header('Location: ' . $openid->authUrl()); |
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* </code> |
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* The provider then sends various parameters via GET, one of them is openid_mode. |
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* Step two is verification: |
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* <code> |
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* if ($this->data['openid_mode']) { |
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* $openid = new LightOpenID; |
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* echo $openid->validate() ? 'Logged in.' : 'Failed'; |
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* } |
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* </code> |
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* |
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* Optionally, you can set $returnUrl and $realm (or $trustRoot, which is an alias). |
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* The default values for those are: |
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* $openid->realm = (!empty($_SERVER['HTTPS']) ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST']; |
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* $openid->returnUrl = $openid->realm . $_SERVER['REQUEST_URI']; |
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* If you don't know their meaning, refer to any openid tutorial, or specification. Or just guess. |
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* |
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* AX and SREG extensions are supported. |
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* To use them, specify $openid->required and/or $openid->optional before calling $openid->authUrl(). |
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* These are arrays, with values being AX schema paths (the 'path' part of the URL). |
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* For example: |
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* $openid->required = array('namePerson/friendly', 'contact/email'); |
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* $openid->optional = array('namePerson/first'); |
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* If the server supports only SREG or OpenID 1.1, these are automaticaly |
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* mapped to SREG names, so that user doesn't have to know anything about the server. |
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* |
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* To get the values, use $openid->getAttributes(). |
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* |
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* |
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* The library requires PHP >= 5.1.2 with curl or http/https stream wrappers enabled. |
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* @author Mewp |
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* @copyright Copyright (c) 2010, Mewp |
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* @license http://www.opensource.org/licenses/mit-license.php MIT |
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*/ |
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class LightOpenID |
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{ |
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public $returnUrl |
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, $required = array() |
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, $optional = array() |
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, $verify_peer = null |
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, $capath = null |
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, $cainfo = null; |
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private $identity, $claimed_id; |
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protected $server, $version, $trustRoot, $aliases, $identifier_select = false |
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, $ax = false, $sreg = false, $data, $setup_url = null; |
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static protected $ax_to_sreg = array( |
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'namePerson/friendly' => 'nickname', |
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'contact/email' => 'email', |
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'namePerson' => 'fullname', |
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'birthDate' => 'dob', |
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'person/gender' => 'gender', |
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'contact/postalCode/home' => 'postcode', |
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'contact/country/home' => 'country', |
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'pref/language' => 'language', |
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'pref/timezone' => 'timezone', |
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); |
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function __construct() |
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{ |
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$this->trustRoot = (!empty($_SERVER['HTTPS']) ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST']; |
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$uri = rtrim(preg_replace('#((?<=\?)|&)openid\.[^&]+#', '', $_SERVER['REQUEST_URI']), '?'); |
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$this->returnUrl = $this->trustRoot . $uri; |
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$this->data = $_POST + $_GET; # OPs may send data as POST or GET. |
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if(!function_exists('curl_init') && !in_array('https', stream_get_wrappers())) { |
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throw new ErrorException('You must have either https wrappers or curl enabled.'); |
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} |
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} |
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function __set($name, $value) |
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{ |
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switch ($name) { |
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case 'identity': |
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if (strlen($value = trim((String) $value))) { |
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if (preg_match('#^xri:/*#i', $value, $m)) { |
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$value = substr($value, strlen($m[0])); |
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} elseif (!preg_match('/^(?:[=@+\$!\(]|https?:)/i', $value)) { |
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$value = "http://$value"; |
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} |
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if (preg_match('#^https?://[^/]+$#i', $value, $m)) { |
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$value .= '/'; |
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} |
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} |
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$this->$name = $this->claimed_id = $value; |
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break; |
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case 'trustRoot': |
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case 'realm': |
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$this->trustRoot = trim($value); |
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} |
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} |
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function __get($name) |
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{ |
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switch ($name) { |
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case 'identity': |
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# We return claimed_id instead of identity, |
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# because the developer should see the claimed identifier, |
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# i.e. what he set as identity, not the op-local identifier (which is what we verify) |
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return $this->claimed_id; |
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case 'trustRoot': |
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case 'realm': |
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return $this->trustRoot; |
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case 'mode': |
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return empty($this->data['openid_mode']) ? null : $this->data['openid_mode']; |
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} |
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} |
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/** |
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* Checks if the server specified in the url exists. |
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* |
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* @param $url url to check |
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* @return true, if the server exists; false otherwise |
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*/ |
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function hostExists($url) |
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{ |
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if (strpos($url, '/') === false) { |
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$server = $url; |
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} else { |
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$server = @parse_url($url, PHP_URL_HOST); |
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} |
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if (!$server) { |
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return false; |
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} |
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return !!gethostbynamel($server); |
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} |
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protected function request_curl($url, $method='GET', $params=array()) |
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{ |
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$params = http_build_query($params, '', '&'); |
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$curl = curl_init($url . ($method == 'GET' && $params ? '?' . $params : '')); |
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curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); |
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curl_setopt($curl, CURLOPT_HEADER, false); |
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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); |
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); |
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curl_setopt($curl, CURLOPT_HTTPHEADER, array('Accept: application/xrds+xml, */*')); |
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if($this->verify_peer !== null) { |
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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, $this->verify_peer); |
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if($this->capath) { |
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curl_setopt($curl, CURLOPT_CAPATH, $this->capath); |
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} |
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if($this->cainfo) { |
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curl_setopt($curl, CURLOPT_CAINFO, $this->cainfo); |
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} |
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} |
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if ($method == 'POST') { |
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curl_setopt($curl, CURLOPT_POST, true); |
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curl_setopt($curl, CURLOPT_POSTFIELDS, $params); |
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} elseif ($method == 'HEAD') { |
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curl_setopt($curl, CURLOPT_HEADER, true); |
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curl_setopt($curl, CURLOPT_NOBODY, true); |
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} else { |
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curl_setopt($curl, CURLOPT_HTTPGET, true); |
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} |
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$response = curl_exec($curl); |
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if($method == 'HEAD') { |
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$headers = array(); |
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foreach(explode("\n", $response) as $header) { |
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$pos = strpos($header,':'); |
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$name = strtolower(trim(substr($header, 0, $pos))); |
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$headers[$name] = trim(substr($header, $pos+1)); |
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} |
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# Updating claimed_id in case of redirections. |
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$effective_url = curl_getinfo($curl, CURLINFO_EFFECTIVE_URL); |
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if($effective_url != $url) { |
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$this->identity = $this->claimed_id = $effective_url; |
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} |
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return $headers; |
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} |
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191
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if (curl_errno($curl)) { |
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throw new ErrorException(curl_error($curl), curl_errno($curl)); |
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} |
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return $response; |
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} |
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protected function request_streams($url, $method='GET', $params=array()) |
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{ |
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if(!$this->hostExists($url)) { |
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throw new ErrorException('Invalid request.'); |
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} |
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$params = http_build_query($params, '', '&'); |
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switch($method) { |
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case 'GET': |
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$opts = array( |
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'http' => array( |
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'method' => 'GET', |
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'header' => 'Accept: application/xrds+xml, */*', |
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'ignore_errors' => true, |
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) |
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); |
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$url = $url . ($params ? '?' . $params : ''); |
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break; |
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case 'POST': |
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$opts = array( |
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'http' => array( |
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'method' => 'POST', |
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'header' => 'Content-type: application/x-www-form-urlencoded', |
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'content' => $params, |
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'ignore_errors' => true, |
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) |
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); |
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break; |
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case 'HEAD': |
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# We want to send a HEAD request, |
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# but since get_headers doesn't accept $context parameter, |
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# we have to change the defaults. |
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$default = stream_context_get_options(stream_context_get_default()); |
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stream_context_get_default( |
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array('http' => array( |
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'method' => 'HEAD', |
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'header' => 'Accept: application/xrds+xml, */*', |
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'ignore_errors' => true, |
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)) |
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); |
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$url = $url . ($params ? '?' . $params : ''); |
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$headers_tmp = get_headers ($url); |
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if(!$headers_tmp) { |
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242
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return array(); |
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} |
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244
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245
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# Parsing headers. |
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246
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$headers = array(); |
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247
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foreach($headers_tmp as $header) { |
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$pos = strpos($header,':'); |
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249
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$name = strtolower(trim(substr($header, 0, $pos))); |
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250
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$headers[$name] = trim(substr($header, $pos+1)); |
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252
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# Following possible redirections. The point is just to have |
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253
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# claimed_id change with them, because get_headers() will |
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254
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# follow redirections automatically. |
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255
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# We ignore redirections with relative paths. |
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256
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# If any known provider uses them, file a bug report. |
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257
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if($name == 'location') { |
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258
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if(strpos($headers[$name], 'http') === 0) { |
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259
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$this->identity = $this->claimed_id = $headers[$name]; |
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260
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} elseif($headers[$name][0] == '/') { |
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261
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$parsed_url = parse_url($this->claimed_id); |
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262
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$this->identity = |
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263
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$this->claimed_id = $parsed_url['scheme'] . '://' |
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264
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. $parsed_url['host'] |
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265
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. $headers[$name]; |
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266
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} |
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267
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} |
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268
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} |
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269
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270
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# And restore them. |
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271
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stream_context_get_default($default); |
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272
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return $headers; |
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273
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} |
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274
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275
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if($this->verify_peer) { |
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276
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$opts += array('ssl' => array( |
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277
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'verify_peer' => true, |
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278
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'capath' => $this->capath, |
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279
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'cafile' => $this->cainfo, |
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280
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)); |
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281
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} |
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282
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283
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$context = stream_context_create ($opts); |
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284
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285
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return file_get_contents($url, false, $context); |
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286
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} |
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287
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288
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protected function request($url, $method='GET', $params=array()) |
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289
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{ |
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290
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if(function_exists('curl_init') && !ini_get('safe_mode') && !ini_get('open_basedir')) { |
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291
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return $this->request_curl($url, $method, $params); |
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292
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} |
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293
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return $this->request_streams($url, $method, $params); |
|
294
|
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|
} |
|
295
|
|
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|
|
296
|
|
|
protected function build_url($url, $parts) |
|
297
|
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|
{ |
|
298
|
|
|
if (isset($url['query'], $parts['query'])) { |
|
299
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|
|
$parts['query'] = $url['query'] . '&' . $parts['query']; |
|
300
|
|
|
} |
|
301
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|
302
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|
|
$url = $parts + $url; |
|
303
|
|
|
$url = $url['scheme'] . '://' |
|
304
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|
|
. (empty($url['username'])?'' |
|
305
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|
|
:(empty($url['password'])? "{$url['username']}@" |
|
|
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|
|
306
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|
|
:"{$url['username']}:{$url['password']}@")) |
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|
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|
307
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|
|
. $url['host'] |
|
308
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|
|
. (empty($url['port'])?'':":{$url['port']}") |
|
309
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|
|
. (empty($url['path'])?'':$url['path']) |
|
310
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|
|
. (empty($url['query'])?'':"?{$url['query']}") |
|
311
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|
|
. (empty($url['fragment'])?'':"#{$url['fragment']}"); |
|
312
|
|
|
return $url; |
|
313
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|
|
} |
|
314
|
|
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|
|
315
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|
|
/** |
|
316
|
|
|
* Helper function used to scan for <meta>/<link> tags and extract information |
|
317
|
|
|
* from them |
|
318
|
|
|
*/ |
|
319
|
|
|
protected function htmlTag($content, $tag, $attrName, $attrValue, $valueName) |
|
320
|
|
|
{ |
|
321
|
|
|
preg_match_all("#<{$tag}[^>]*$attrName=['\"].*?$attrValue.*?['\"][^>]*$valueName=['\"](.+?)['\"][^>]*/?>#i", $content, $matches1); |
|
322
|
|
|
preg_match_all("#<{$tag}[^>]*$valueName=['\"](.+?)['\"][^>]*$attrName=['\"].*?$attrValue.*?['\"][^>]*/?>#i", $content, $matches2); |
|
323
|
|
|
|
|
324
|
|
|
$result = array_merge($matches1[1], $matches2[1]); |
|
325
|
|
|
return empty($result)?false:$result[0]; |
|
326
|
|
|
} |
|
327
|
|
|
|
|
328
|
|
|
/** |
|
329
|
|
|
* Performs Yadis and HTML discovery. Normally not used. |
|
330
|
|
|
* @param $url Identity URL. |
|
|
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|
|
331
|
|
|
* @return String OP Endpoint (i.e. OpenID provider address). |
|
332
|
|
|
* @throws ErrorException |
|
333
|
|
|
*/ |
|
334
|
|
|
function discover($url) |
|
335
|
|
|
{ |
|
336
|
|
|
if (!$url) throw new ErrorException('No identity supplied.'); |
|
337
|
|
|
# Use xri.net proxy to resolve i-name identities |
|
|
|
|
|
|
338
|
|
|
if (!preg_match('#^https?:#', $url)) { |
|
339
|
|
|
$url = "https://xri.net/$url"; |
|
340
|
|
|
} |
|
341
|
|
|
|
|
342
|
|
|
# We save the original url in case of Yadis discovery failure. |
|
|
|
|
|
|
343
|
|
|
# It can happen when we'll be lead to an XRDS document |
|
|
|
|
|
|
344
|
|
|
# which does not have any OpenID2 services. |
|
|
|
|
|
|
345
|
|
|
$originalUrl = $url; |
|
346
|
|
|
|
|
347
|
|
|
# A flag to disable yadis discovery in case of failure in headers. |
|
|
|
|
|
|
348
|
|
|
$yadis = true; |
|
349
|
|
|
|
|
350
|
|
|
# We'll jump a maximum of 5 times, to avoid endless redirections. |
|
|
|
|
|
|
351
|
|
|
for ($i = 0; $i < 5; $i ++) { |
|
352
|
|
|
if ($yadis) { |
|
353
|
|
|
$headers = $this->request($url, 'HEAD'); |
|
354
|
|
|
|
|
355
|
|
|
$next = false; |
|
356
|
|
|
if (isset($headers['x-xrds-location'])) { |
|
357
|
|
|
$url = $this->build_url(parse_url($url), parse_url(trim($headers['x-xrds-location']))); |
|
358
|
|
|
$next = true; |
|
359
|
|
|
} |
|
360
|
|
|
|
|
361
|
|
|
if (isset($headers['content-type']) |
|
362
|
|
|
&& (strpos($headers['content-type'], 'application/xrds+xml') !== false |
|
363
|
|
|
|| strpos($headers['content-type'], 'text/xml') !== false) |
|
364
|
|
|
) { |
|
365
|
|
|
# Apparently, some providers return XRDS documents as text/html. |
|
|
|
|
|
|
366
|
|
|
# While it is against the spec, allowing this here shouldn't break |
|
|
|
|
|
|
367
|
|
|
# compatibility with anything. |
|
|
|
|
|
|
368
|
|
|
# --- |
|
|
|
|
|
|
369
|
|
|
# Found an XRDS document, now let's find the server, and optionally delegate. |
|
|
|
|
|
|
370
|
|
|
$content = $this->request($url, 'GET'); |
|
371
|
|
|
|
|
372
|
|
|
preg_match_all('#<Service.*?>(.*?)</Service>#s', $content, $m); |
|
373
|
|
|
foreach($m[1] as $content) { |
|
374
|
|
|
$content = ' ' . $content; # The space is added, so that strpos doesn't return 0. |
|
|
|
|
|
|
375
|
|
|
|
|
376
|
|
|
# OpenID 2 |
|
|
|
|
|
|
377
|
|
|
$ns = preg_quote('http://specs.openid.net/auth/2.0/'); |
|
378
|
|
|
if(preg_match('#<Type>\s*'.$ns.'(server|signon)\s*</Type>#s', $content, $type)) { |
|
379
|
|
|
if ($type[1] == 'server') $this->identifier_select = true; |
|
380
|
|
|
|
|
381
|
|
|
preg_match('#<URI.*?>(.*)</URI>#', $content, $server); |
|
382
|
|
|
preg_match('#<(Local|Canonical)ID>(.*)</\1ID>#', $content, $delegate); |
|
383
|
|
|
if (empty($server)) { |
|
384
|
|
|
return false; |
|
|
|
|
|
|
385
|
|
|
} |
|
386
|
|
|
# Does the server advertise support for either AX or SREG? |
|
|
|
|
|
|
387
|
|
|
$this->ax = (bool) strpos($content, '<Type>http://openid.net/srv/ax/1.0</Type>'); |
|
388
|
|
|
$this->sreg = strpos($content, '<Type>http://openid.net/sreg/1.0</Type>') |
|
389
|
|
|
|| strpos($content, '<Type>http://openid.net/extensions/sreg/1.1</Type>'); |
|
390
|
|
|
|
|
391
|
|
|
$server = $server[1]; |
|
392
|
|
|
if (isset($delegate[2])) $this->identity = trim($delegate[2]); |
|
393
|
|
|
$this->version = 2; |
|
394
|
|
|
|
|
395
|
|
|
$this->server = $server; |
|
396
|
|
|
return $server; |
|
397
|
|
|
} |
|
398
|
|
|
|
|
399
|
|
|
# OpenID 1.1 |
|
|
|
|
|
|
400
|
|
|
$ns = preg_quote('http://openid.net/signon/1.1'); |
|
401
|
|
|
if (preg_match('#<Type>\s*'.$ns.'\s*</Type>#s', $content)) { |
|
402
|
|
|
|
|
403
|
|
|
preg_match('#<URI.*?>(.*)</URI>#', $content, $server); |
|
404
|
|
|
preg_match('#<.*?Delegate>(.*)</.*?Delegate>#', $content, $delegate); |
|
405
|
|
|
if (empty($server)) { |
|
406
|
|
|
return false; |
|
|
|
|
|
|
407
|
|
|
} |
|
408
|
|
|
# AX can be used only with OpenID 2.0, so checking only SREG |
|
|
|
|
|
|
409
|
|
|
$this->sreg = strpos($content, '<Type>http://openid.net/sreg/1.0</Type>') |
|
410
|
|
|
|| strpos($content, '<Type>http://openid.net/extensions/sreg/1.1</Type>'); |
|
411
|
|
|
|
|
412
|
|
|
$server = $server[1]; |
|
413
|
|
|
if (isset($delegate[1])) $this->identity = $delegate[1]; |
|
414
|
|
|
$this->version = 1; |
|
415
|
|
|
|
|
416
|
|
|
$this->server = $server; |
|
417
|
|
|
return $server; |
|
418
|
|
|
} |
|
419
|
|
|
} |
|
420
|
|
|
|
|
421
|
|
|
$next = true; |
|
422
|
|
|
$yadis = false; |
|
423
|
|
|
$url = $originalUrl; |
|
424
|
|
|
$content = null; |
|
425
|
|
|
break; |
|
426
|
|
|
} |
|
427
|
|
|
if ($next) continue; |
|
428
|
|
|
|
|
429
|
|
|
# There are no relevant information in headers, so we search the body. |
|
|
|
|
|
|
430
|
|
|
$content = $this->request($url, 'GET'); |
|
431
|
|
|
$location = $this->htmlTag($content, 'meta', 'http-equiv', 'X-XRDS-Location', 'content'); |
|
432
|
|
|
if ($location) { |
|
433
|
|
|
$url = $this->build_url(parse_url($url), parse_url($location)); |
|
434
|
|
|
continue; |
|
435
|
|
|
} |
|
436
|
|
|
} |
|
437
|
|
|
|
|
438
|
|
|
if (!$content) $content = $this->request($url, 'GET'); |
|
|
|
|
|
|
439
|
|
|
|
|
440
|
|
|
# At this point, the YADIS Discovery has failed, so we'll switch |
|
|
|
|
|
|
441
|
|
|
# to openid2 HTML discovery, then fallback to openid 1.1 discovery. |
|
|
|
|
|
|
442
|
|
|
$server = $this->htmlTag($content, 'link', 'rel', 'openid2.provider', 'href'); |
|
443
|
|
|
$delegate = $this->htmlTag($content, 'link', 'rel', 'openid2.local_id', 'href'); |
|
444
|
|
|
$this->version = 2; |
|
445
|
|
|
|
|
446
|
|
|
if (!$server) { |
|
447
|
|
|
# The same with openid 1.1 |
|
|
|
|
|
|
448
|
|
|
$server = $this->htmlTag($content, 'link', 'rel', 'openid.server', 'href'); |
|
449
|
|
|
$delegate = $this->htmlTag($content, 'link', 'rel', 'openid.delegate', 'href'); |
|
450
|
|
|
$this->version = 1; |
|
451
|
|
|
} |
|
452
|
|
|
|
|
453
|
|
|
if ($server) { |
|
454
|
|
|
# We found an OpenID2 OP Endpoint |
|
|
|
|
|
|
455
|
|
|
if ($delegate) { |
|
456
|
|
|
# We have also found an OP-Local ID. |
|
|
|
|
|
|
457
|
|
|
$this->identity = $delegate; |
|
458
|
|
|
} |
|
459
|
|
|
$this->server = $server; |
|
460
|
|
|
return $server; |
|
461
|
|
|
} |
|
462
|
|
|
|
|
463
|
|
|
throw new ErrorException('No servers found!'); |
|
464
|
|
|
} |
|
465
|
|
|
throw new ErrorException('Endless redirection!'); |
|
466
|
|
|
} |
|
467
|
|
|
|
|
468
|
|
|
protected function sregParams() |
|
469
|
|
|
{ |
|
470
|
|
|
$params = array(); |
|
471
|
|
|
# We always use SREG 1.1, even if the server is advertising only support for 1.0. |
|
|
|
|
|
|
472
|
|
|
# That's because it's fully backwards compatibile with 1.0, and some providers |
|
|
|
|
|
|
473
|
|
|
# advertise 1.0 even if they accept only 1.1. One such provider is myopenid.com |
|
|
|
|
|
|
474
|
|
|
$params['openid.ns.sreg'] = 'http://openid.net/extensions/sreg/1.1'; |
|
475
|
|
|
if ($this->required) { |
|
|
|
|
|
|
476
|
|
|
$params['openid.sreg.required'] = array(); |
|
477
|
|
|
foreach ($this->required as $required) { |
|
478
|
|
|
if (!isset(self::$ax_to_sreg[$required])) continue; |
|
479
|
|
|
$params['openid.sreg.required'][] = self::$ax_to_sreg[$required]; |
|
480
|
|
|
} |
|
481
|
|
|
$params['openid.sreg.required'] = implode(',', $params['openid.sreg.required']); |
|
482
|
|
|
} |
|
483
|
|
|
|
|
484
|
|
|
if ($this->optional) { |
|
|
|
|
|
|
485
|
|
|
$params['openid.sreg.optional'] = array(); |
|
486
|
|
|
foreach ($this->optional as $optional) { |
|
487
|
|
|
if (!isset(self::$ax_to_sreg[$optional])) continue; |
|
488
|
|
|
$params['openid.sreg.optional'][] = self::$ax_to_sreg[$optional]; |
|
489
|
|
|
} |
|
490
|
|
|
$params['openid.sreg.optional'] = implode(',', $params['openid.sreg.optional']); |
|
491
|
|
|
} |
|
492
|
|
|
return $params; |
|
493
|
|
|
} |
|
494
|
|
|
|
|
495
|
|
|
protected function axParams() |
|
496
|
|
|
{ |
|
497
|
|
|
$params = array(); |
|
498
|
|
|
if ($this->required || $this->optional) { |
|
|
|
|
|
|
499
|
|
|
$params['openid.ns.ax'] = 'http://openid.net/srv/ax/1.0'; |
|
500
|
|
|
$params['openid.ax.mode'] = 'fetch_request'; |
|
501
|
|
|
$this->aliases = array(); |
|
502
|
|
|
$counts = array(); |
|
503
|
|
|
$required = array(); |
|
504
|
|
|
$optional = array(); |
|
505
|
|
|
foreach (array('required','optional') as $type) { |
|
506
|
|
|
foreach ($this->$type as $alias => $field) { |
|
507
|
|
|
if (is_int($alias)) $alias = strtr($field, '/', '_'); |
|
508
|
|
|
$this->aliases[$alias] = 'http://axschema.org/' . $field; |
|
509
|
|
|
if (empty($counts[$alias])) $counts[$alias] = 0; |
|
510
|
|
|
$counts[$alias] += 1; |
|
511
|
|
|
${$type}[] = $alias; |
|
512
|
|
|
} |
|
513
|
|
|
} |
|
514
|
|
|
foreach ($this->aliases as $alias => $ns) { |
|
515
|
|
|
$params['openid.ax.type.' . $alias] = $ns; |
|
516
|
|
|
} |
|
517
|
|
|
foreach ($counts as $alias => $count) { |
|
518
|
|
|
if ($count == 1) continue; |
|
519
|
|
|
$params['openid.ax.count.' . $alias] = $count; |
|
520
|
|
|
} |
|
521
|
|
|
|
|
522
|
|
|
# Don't send empty ax.requied and ax.if_available. |
|
|
|
|
|
|
523
|
|
|
# Google and possibly other providers refuse to support ax when one of these is empty. |
|
|
|
|
|
|
524
|
|
|
if($required) { |
|
|
|
|
|
|
525
|
|
|
$params['openid.ax.required'] = implode(',', $required); |
|
526
|
|
|
} |
|
527
|
|
|
if($optional) { |
|
|
|
|
|
|
528
|
|
|
$params['openid.ax.if_available'] = implode(',', $optional); |
|
529
|
|
|
} |
|
530
|
|
|
} |
|
531
|
|
|
return $params; |
|
532
|
|
|
} |
|
533
|
|
|
|
|
534
|
|
|
protected function authUrl_v1($immediate) |
|
535
|
|
|
{ |
|
536
|
|
|
$returnUrl = $this->returnUrl; |
|
537
|
|
|
# If we have an openid.delegate that is different from our claimed id, |
|
|
|
|
|
|
538
|
|
|
# we need to somehow preserve the claimed id between requests. |
|
|
|
|
|
|
539
|
|
|
# The simplest way is to just send it along with the return_to url. |
|
|
|
|
|
|
540
|
|
|
if($this->identity != $this->claimed_id) { |
|
541
|
|
|
$returnUrl .= (strpos($returnUrl, '?') ? '&' : '?') . 'openid.claimed_id=' . $this->claimed_id; |
|
542
|
|
|
} |
|
543
|
|
|
|
|
544
|
|
|
$params = array( |
|
545
|
|
|
'openid.return_to' => $returnUrl, |
|
546
|
|
|
'openid.mode' => $immediate ? 'checkid_immediate' : 'checkid_setup', |
|
547
|
|
|
'openid.identity' => $this->identity, |
|
548
|
|
|
'openid.trust_root' => $this->trustRoot, |
|
549
|
|
|
) + $this->sregParams(); |
|
550
|
|
|
|
|
551
|
|
|
return $this->build_url(parse_url($this->server) |
|
552
|
|
|
, array('query' => http_build_query($params, '', '&'))); |
|
553
|
|
|
} |
|
554
|
|
|
|
|
555
|
|
|
protected function authUrl_v2($immediate) |
|
556
|
|
|
{ |
|
557
|
|
|
$params = array( |
|
558
|
|
|
'openid.ns' => 'http://specs.openid.net/auth/2.0', |
|
559
|
|
|
'openid.mode' => $immediate ? 'checkid_immediate' : 'checkid_setup', |
|
560
|
|
|
'openid.return_to' => $this->returnUrl, |
|
561
|
|
|
'openid.realm' => $this->trustRoot, |
|
562
|
|
|
); |
|
563
|
|
|
if ($this->ax) { |
|
564
|
|
|
$params += $this->axParams(); |
|
565
|
|
|
} |
|
566
|
|
|
if ($this->sreg) { |
|
567
|
|
|
$params += $this->sregParams(); |
|
568
|
|
|
} |
|
569
|
|
|
if (!$this->ax && !$this->sreg) { |
|
570
|
|
|
# If OP doesn't advertise either SREG, nor AX, let's send them both |
|
|
|
|
|
|
571
|
|
|
# in worst case we don't get anything in return. |
|
|
|
|
|
|
572
|
|
|
$params += $this->axParams() + $this->sregParams(); |
|
573
|
|
|
} |
|
574
|
|
|
|
|
575
|
|
|
if ($this->identifier_select) { |
|
576
|
|
|
$params['openid.identity'] = $params['openid.claimed_id'] |
|
577
|
|
|
= 'http://specs.openid.net/auth/2.0/identifier_select'; |
|
578
|
|
|
} else { |
|
579
|
|
|
$params['openid.identity'] = $this->identity; |
|
580
|
|
|
$params['openid.claimed_id'] = $this->claimed_id; |
|
581
|
|
|
} |
|
582
|
|
|
|
|
583
|
|
|
return $this->build_url(parse_url($this->server) |
|
584
|
|
|
, array('query' => http_build_query($params, '', '&'))); |
|
585
|
|
|
} |
|
586
|
|
|
|
|
587
|
|
|
/** |
|
588
|
|
|
* Returns authentication url. Usually, you want to redirect your user to it. |
|
589
|
|
|
* @return String The authentication url. |
|
590
|
|
|
* @param String $select_identifier Whether to request OP to select identity for an user in OpenID 2. Does not affect OpenID 1. |
|
591
|
|
|
* @throws ErrorException |
|
592
|
|
|
*/ |
|
593
|
|
|
function authUrl($immediate = false) |
|
594
|
|
|
{ |
|
595
|
|
|
if ($this->setup_url && !$immediate) return $this->setup_url; |
|
596
|
|
|
if (!$this->server) $this->discover($this->identity); |
|
597
|
|
|
|
|
598
|
|
|
if ($this->version == 2) { |
|
599
|
|
|
return $this->authUrl_v2($immediate); |
|
600
|
|
|
} |
|
601
|
|
|
return $this->authUrl_v1($immediate); |
|
602
|
|
|
} |
|
603
|
|
|
|
|
604
|
|
|
/** |
|
605
|
|
|
* Performs OpenID verification with the OP. |
|
606
|
|
|
* @return Bool Whether the verification was successful. |
|
607
|
|
|
* @throws ErrorException |
|
608
|
|
|
*/ |
|
609
|
|
|
function validate() |
|
610
|
|
|
{ |
|
611
|
|
|
# If the request was using immediate mode, a failure may be reported |
|
|
|
|
|
|
612
|
|
|
# by presenting user_setup_url (for 1.1) or reporting |
|
|
|
|
|
|
613
|
|
|
# mode 'setup_needed' (for 2.0). Also catching all modes other than |
|
|
|
|
|
|
614
|
|
|
# id_res, in order to avoid throwing errors. |
|
|
|
|
|
|
615
|
|
|
if(isset($this->data['openid_user_setup_url'])) { |
|
616
|
|
|
$this->setup_url = $this->data['openid_user_setup_url']; |
|
617
|
|
|
return false; |
|
618
|
|
|
} |
|
619
|
|
|
if($this->mode != 'id_res') { |
|
|
|
|
|
|
620
|
|
|
return false; |
|
621
|
|
|
} |
|
622
|
|
|
|
|
623
|
|
|
$this->claimed_id = isset($this->data['openid_claimed_id'])?$this->data['openid_claimed_id']:$this->data['openid_identity']; |
|
624
|
|
|
$params = array( |
|
625
|
|
|
'openid.assoc_handle' => $this->data['openid_assoc_handle'], |
|
626
|
|
|
'openid.signed' => $this->data['openid_signed'], |
|
627
|
|
|
'openid.sig' => $this->data['openid_sig'], |
|
628
|
|
|
); |
|
629
|
|
|
|
|
630
|
|
|
if (isset($this->data['openid_ns'])) { |
|
631
|
|
|
# We're dealing with an OpenID 2.0 server, so let's set an ns |
|
|
|
|
|
|
632
|
|
|
# Even though we should know location of the endpoint, |
|
|
|
|
|
|
633
|
|
|
# we still need to verify it by discovery, so $server is not set here |
|
|
|
|
|
|
634
|
|
|
$params['openid.ns'] = 'http://specs.openid.net/auth/2.0'; |
|
635
|
|
|
} elseif (isset($this->data['openid_claimed_id']) |
|
636
|
|
|
&& $this->data['openid_claimed_id'] != $this->data['openid_identity'] |
|
637
|
|
|
) { |
|
638
|
|
|
# If it's an OpenID 1 provider, and we've got claimed_id, |
|
|
|
|
|
|
639
|
|
|
# we have to append it to the returnUrl, like authUrl_v1 does. |
|
|
|
|
|
|
640
|
|
|
$this->returnUrl .= (strpos($this->returnUrl, '?') ? '&' : '?') |
|
641
|
|
|
. 'openid.claimed_id=' . $this->claimed_id; |
|
642
|
|
|
} |
|
643
|
|
|
|
|
644
|
|
|
if ($this->data['openid_return_to'] != $this->returnUrl) { |
|
645
|
|
|
# The return_to url must match the url of current request. |
|
|
|
|
|
|
646
|
|
|
# I'm assuing that noone will set the returnUrl to something that doesn't make sense. |
|
|
|
|
|
|
647
|
|
|
return false; |
|
648
|
|
|
} |
|
649
|
|
|
|
|
650
|
|
|
$server = $this->discover($this->claimed_id); |
|
651
|
|
|
|
|
652
|
|
|
foreach (explode(',', $this->data['openid_signed']) as $item) { |
|
653
|
|
|
# Checking whether magic_quotes_gpc is turned on, because |
|
|
|
|
|
|
654
|
|
|
# the function may fail if it is. For example, when fetching |
|
|
|
|
|
|
655
|
|
|
# AX namePerson, it might containg an apostrophe, which will be escaped. |
|
|
|
|
|
|
656
|
|
|
# In such case, validation would fail, since we'd send different data than OP |
|
|
|
|
|
|
657
|
|
|
# wants to verify. stripslashes() should solve that problem, but we can't |
|
|
|
|
|
|
658
|
|
|
# use it when magic_quotes is off. |
|
|
|
|
|
|
659
|
|
|
$value = $this->data['openid_' . str_replace('.','_',$item)]; |
|
660
|
|
|
$params['openid.' . $item] = (version_compare(PHP_VERSION, '5.4.0') < 0 && get_magic_quotes_gpc()) ? stripslashes($value) : $value; |
|
661
|
|
|
|
|
662
|
|
|
} |
|
663
|
|
|
|
|
664
|
|
|
$params['openid.mode'] = 'check_authentication'; |
|
665
|
|
|
|
|
666
|
|
|
$response = $this->request($server, 'POST', $params); |
|
667
|
|
|
|
|
668
|
|
|
return preg_match('/is_valid\s*:\s*true/i', $response); |
|
|
|
|
|
|
669
|
|
|
} |
|
670
|
|
|
|
|
671
|
|
|
protected function getAxAttributes() |
|
672
|
|
|
{ |
|
673
|
|
|
$alias = null; |
|
674
|
|
|
if (isset($this->data['openid_ns_ax']) |
|
675
|
|
|
&& $this->data['openid_ns_ax'] != 'http://openid.net/srv/ax/1.0' |
|
676
|
|
|
) { # It's the most likely case, so we'll check it before |
|
|
|
|
|
|
677
|
|
|
$alias = 'ax'; |
|
678
|
|
|
} else { |
|
679
|
|
|
# 'ax' prefix is either undefined, or points to another extension, |
|
|
|
|
|
|
680
|
|
|
# so we search for another prefix |
|
|
|
|
|
|
681
|
|
|
foreach ($this->data as $key => $val) { |
|
682
|
|
|
if (substr($key, 0, strlen('openid_ns_')) == 'openid_ns_' |
|
683
|
|
|
&& $val == 'http://openid.net/srv/ax/1.0' |
|
684
|
|
|
) { |
|
685
|
|
|
$alias = substr($key, strlen('openid_ns_')); |
|
686
|
|
|
break; |
|
687
|
|
|
} |
|
688
|
|
|
} |
|
689
|
|
|
} |
|
690
|
|
|
if (!$alias) { |
|
691
|
|
|
# An alias for AX schema has not been found, |
|
|
|
|
|
|
692
|
|
|
# so there is no AX data in the OP's response |
|
|
|
|
|
|
693
|
|
|
return array(); |
|
694
|
|
|
} |
|
695
|
|
|
|
|
696
|
|
|
$attributes = array(); |
|
697
|
|
|
foreach ($this->data as $key => $value) { |
|
698
|
|
|
$keyMatch = 'openid_' . $alias . '_value_'; |
|
699
|
|
|
if (substr($key, 0, strlen($keyMatch)) != $keyMatch) { |
|
700
|
|
|
continue; |
|
701
|
|
|
} |
|
702
|
|
|
$key = substr($key, strlen($keyMatch)); |
|
703
|
|
|
if (!isset($this->data['openid_' . $alias . '_type_' . $key])) { |
|
704
|
|
|
# OP is breaking the spec by returning a field without |
|
|
|
|
|
|
705
|
|
|
# associated ns. This shouldn't happen, but it's better |
|
|
|
|
|
|
706
|
|
|
# to check, than cause an E_NOTICE. |
|
|
|
|
|
|
707
|
|
|
continue; |
|
708
|
|
|
} |
|
709
|
|
|
$key = substr($this->data['openid_' . $alias . '_type_' . $key], |
|
710
|
|
|
strlen('http://axschema.org/')); |
|
711
|
|
|
$attributes[$key] = $value; |
|
712
|
|
|
} |
|
713
|
|
|
return $attributes; |
|
714
|
|
|
} |
|
715
|
|
|
|
|
716
|
|
|
protected function getSregAttributes() |
|
717
|
|
|
{ |
|
718
|
|
|
$attributes = array(); |
|
719
|
|
|
$sreg_to_ax = array_flip(self::$ax_to_sreg); |
|
720
|
|
|
foreach ($this->data as $key => $value) { |
|
721
|
|
|
$keyMatch = 'openid_sreg_'; |
|
722
|
|
|
if (substr($key, 0, strlen($keyMatch)) != $keyMatch) { |
|
723
|
|
|
continue; |
|
724
|
|
|
} |
|
725
|
|
|
$key = substr($key, strlen($keyMatch)); |
|
726
|
|
|
if (!isset($sreg_to_ax[$key])) { |
|
727
|
|
|
# The field name isn't part of the SREG spec, so we ignore it. |
|
|
|
|
|
|
728
|
|
|
continue; |
|
729
|
|
|
} |
|
730
|
|
|
$attributes[$sreg_to_ax[$key]] = $value; |
|
731
|
|
|
} |
|
732
|
|
|
return $attributes; |
|
733
|
|
|
} |
|
734
|
|
|
|
|
735
|
|
|
/** |
|
736
|
|
|
* Gets AX/SREG attributes provided by OP. should be used only after successful validaton. |
|
737
|
|
|
* Note that it does not guarantee that any of the required/optional parameters will be present, |
|
738
|
|
|
* or that there will be no other attributes besides those specified. |
|
739
|
|
|
* In other words. OP may provide whatever information it wants to. |
|
740
|
|
|
* * SREG names will be mapped to AX names. |
|
741
|
|
|
* * @return Array Array of attributes with keys being the AX schema names, e.g. 'contact/email' |
|
742
|
|
|
* @see http://www.axschema.org/types/ |
|
743
|
|
|
*/ |
|
744
|
|
|
function getAttributes() |
|
745
|
|
|
{ |
|
746
|
|
|
if (isset($this->data['openid_ns']) |
|
747
|
|
|
&& $this->data['openid_ns'] == 'http://specs.openid.net/auth/2.0' |
|
748
|
|
|
) { # OpenID 2.0 |
|
|
|
|
|
|
749
|
|
|
# We search for both AX and SREG attributes, with AX taking precedence. |
|
|
|
|
|
|
750
|
|
|
return $this->getAxAttributes() + $this->getSregAttributes(); |
|
751
|
|
|
} |
|
752
|
|
|
return $this->getSregAttributes(); |
|
753
|
|
|
} |
|
754
|
|
|
} |
|
755
|
|
|
|
BOINC /
boinc
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