| <?php | <?php |
| /** | /** |
| * This class provides a simple interface for OpenID (1.1 and 2.0) authentication. | * This class provides a simple interface for OpenID (1.1 and 2.0) authentication. |
| * Supports Yadis discovery. | * Supports Yadis discovery. |
| * The authentication process is stateless/dumb. | * The authentication process is stateless/dumb. |
| * | * |
| * Usage: | * Usage: |
| * Sign-on with OpenID is a two step process: | * Sign-on with OpenID is a two step process: |
| * Step one is authentication with the provider: | * Step one is authentication with the provider: |
| * <code> | * <code> |
| * $openid = new LightOpenID('my-host.example.org'); | * $openid = new LightOpenID('my-host.example.org'); |
| * $openid->identity = 'ID supplied by user'; | * $openid->identity = 'ID supplied by user'; |
| * header('Location: ' . $openid->authUrl()); | * header('Location: ' . $openid->authUrl()); |
| * </code> | * </code> |
| * The provider then sends various parameters via GET, one of them is openid_mode. | * The provider then sends various parameters via GET, one of them is openid_mode. |
| * Step two is verification: | * Step two is verification: |
| * <code> | * <code> |
| * if ($this->data['openid_mode']) { | * if ($this->data['openid_mode']) { |
| * $openid = new LightOpenID('my-host.example.org'); | * $openid = new LightOpenID('my-host.example.org'); |
| * echo $openid->validate() ? 'Logged in.' : 'Failed'; | * echo $openid->validate() ? 'Logged in.' : 'Failed'; |
| * } | * } |
| * </code> | * </code> |
| * | * |
| * Change the 'my-host.example.org' to your domain name. Do NOT use $_SERVER['HTTP_HOST'] | * Change the 'my-host.example.org' to your domain name. Do NOT use $_SERVER['HTTP_HOST'] |
| * for that, unless you know what you are doing. | * for that, unless you know what you are doing. |
| * | * |
| * Optionally, you can set $returnUrl and $realm (or $trustRoot, which is an alias). | * Optionally, you can set $returnUrl and $realm (or $trustRoot, which is an alias). |
| * The default values for those are: | * The default values for those are: |
| * $openid->realm = (!empty($_SERVER['HTTPS']) ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST']; | * $openid->realm = (!empty($_SERVER['HTTPS']) ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST']; |
| * $openid->returnUrl = $openid->realm . $_SERVER['REQUEST_URI']; | * $openid->returnUrl = $openid->realm . $_SERVER['REQUEST_URI']; |
| * If you don't know their meaning, refer to any openid tutorial, or specification. Or just guess. | * If you don't know their meaning, refer to any openid tutorial, or specification. Or just guess. |
| * | * |
| * AX and SREG extensions are supported. | * AX and SREG extensions are supported. |
| * To use them, specify $openid->required and/or $openid->optional before calling $openid->authUrl(). | * To use them, specify $openid->required and/or $openid->optional before calling $openid->authUrl(). |
| * These are arrays, with values being AX schema paths (the 'path' part of the URL). | * These are arrays, with values being AX schema paths (the 'path' part of the URL). |
| * For example: | * For example: |
| * $openid->required = array('namePerson/friendly', 'contact/email'); | * $openid->required = array('namePerson/friendly', 'contact/email'); |
| * $openid->optional = array('namePerson/first'); | * $openid->optional = array('namePerson/first'); |
| * If the server supports only SREG or OpenID 1.1, these are automaticaly | * If the server supports only SREG or OpenID 1.1, these are automaticaly |
| * mapped to SREG names, so that user doesn't have to know anything about the server. | * mapped to SREG names, so that user doesn't have to know anything about the server. |
| * | * |
| * To get the values, use $openid->getAttributes(). | * To get the values, use $openid->getAttributes(). |
| * | * |
| * | * |
| * The library requires PHP >= 5.1.2 with curl or http/https stream wrappers enabled. | * The library requires PHP >= 5.1.2 with curl or http/https stream wrappers enabled. |
| * @author Mewp | * @author Mewp |
| * @copyright Copyright (c) 2010, Mewp | * @copyright Copyright (c) 2010, Mewp |
| * @license http://www.opensource.org/licenses/mit-license.php MIT | * @license http://www.opensource.org/licenses/mit-license.php MIT |
| */ | */ |
| class LightOpenID | class LightOpenID |
| { | { |
| public $returnUrl | public $returnUrl |
| , $required = array() | , $required = array() |
| , $optional = array() | , $optional = array() |
| , $verify_peer = null | , $verify_peer = null |
| , $capath = null | , $capath = null |
| , $cainfo = null | , $cainfo = null |
| , $data; | , $data; |
| private $identity, $claimed_id; | private $identity, $claimed_id; |
| protected $server, $version, $trustRoot, $aliases, $identifier_select = false | protected $server, $version, $trustRoot, $aliases, $identifier_select = false |
| , $ax = false, $sreg = false, $setup_url = null; | , $ax = false, $sreg = false, $setup_url = null; |
| static protected $ax_to_sreg = array( | static protected $ax_to_sreg = array( |
| 'namePerson/friendly' => 'nickname', | 'namePerson/friendly' => 'nickname', |
| 'contact/email' => 'email', | 'contact/email' => 'email', |
| 'namePerson' => 'fullname', | 'namePerson' => 'fullname', |
| 'birthDate' => 'dob', | 'birthDate' => 'dob', |
| 'person/gender' => 'gender', | 'person/gender' => 'gender', |
| 'contact/postalCode/home' => 'postcode', | 'contact/postalCode/home' => 'postcode', |
| 'contact/country/home' => 'country', | 'contact/country/home' => 'country', |
| 'pref/language' => 'language', | 'pref/language' => 'language', |
| 'pref/timezone' => 'timezone', | 'pref/timezone' => 'timezone', |
| ); | ); |
| function __construct($host) | function __construct($host) |
| { | { |
| $this->trustRoot = (strpos($host, '://') ? $host : 'http://' . $host); | $this->trustRoot = (strpos($host, '://') ? $host : 'http://' . $host); |
| if ((!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off') | if ((!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off') |
| || (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) | || (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) |
| && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') | && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') |
| ) { | ) { |
| $this->trustRoot = (strpos($host, '://') ? $host : 'https://' . $host); | $this->trustRoot = (strpos($host, '://') ? $host : 'https://' . $host); |
| } | } |
| if(($host_end = strpos($this->trustRoot, '/', 8)) !== false) { | if(($host_end = @strpos($this->trustRoot, '/', 8)) !== false) { |
| $this->trustRoot = substr($this->trustRoot, 0, $host_end); | $this->trustRoot = substr($this->trustRoot, 0, $host_end); |
| } | } |
| $uri = rtrim(preg_replace('#((?<=\?)|&)openid\.[^&]+#', '', $_SERVER['REQUEST_URI']), '?'); | $uri = rtrim(preg_replace('#((?<=\?)|&)openid\.[^&]+#', '', $_SERVER['REQUEST_URI']), '?'); |
| $this->returnUrl = $this->trustRoot . $uri; | $this->returnUrl = $this->trustRoot . $uri; |
| $this->data = ($_SERVER['REQUEST_METHOD'] === 'POST') ? $_POST : $_GET; | $this->data = ($_SERVER['REQUEST_METHOD'] === 'POST') ? $_POST : $_GET; |
| if(!function_exists('curl_init') && !in_array('https', stream_get_wrappers())) { | if(!function_exists('curl_init') && !in_array('https', stream_get_wrappers())) { |
| throw new ErrorException('You must have either https wrappers or curl enabled.'); | throw new ErrorException('You must have either https wrappers or curl enabled.'); |
| } | } |
| } | } |
| function __set($name, $value) | function __set($name, $value) |
| { | { |
| switch ($name) { | switch ($name) { |
| case 'identity': | case 'identity': |
| if (strlen($value = trim((String) $value))) { | if (strlen($value = trim((String) $value))) { |
| if (preg_match('#^xri:/*#i', $value, $m)) { | if (preg_match('#^xri:/*#i', $value, $m)) { |
| $value = substr($value, strlen($m[0])); | $value = substr($value, strlen($m[0])); |
| } elseif (!preg_match('/^(?:[=@+\$!\(]|https?:)/i', $value)) { | } elseif (!preg_match('/^(?:[=@+\$!\(]|https?:)/i', $value)) { |
| $value = "http://$value"; | $value = "http://$value"; |
| } | } |
| if (preg_match('#^https?://[^/]+$#i', $value, $m)) { | if (preg_match('#^https?://[^/]+$#i', $value, $m)) { |
| $value .= '/'; | $value .= '/'; |
| } | } |
| } | } |
| $this->$name = $this->claimed_id = $value; | $this->$name = $this->claimed_id = $value; |
| break; | break; |
| case 'trustRoot': | case 'trustRoot': |
| case 'realm': | case 'realm': |
| $this->trustRoot = trim($value); | $this->trustRoot = trim($value); |
| } | } |
| } | } |
| function __get($name) | function __get($name) |
| { | { |
| switch ($name) { | switch ($name) { |
| case 'identity': | case 'identity': |
| # We return claimed_id instead of identity, | # We return claimed_id instead of identity, |
| # because the developer should see the claimed identifier, | # because the developer should see the claimed identifier, |
| # i.e. what he set as identity, not the op-local identifier (which is what we verify) | # i.e. what he set as identity, not the op-local identifier (which is what we verify) |
| return $this->claimed_id; | return $this->claimed_id; |
| case 'trustRoot': | case 'trustRoot': |
| case 'realm': | case 'realm': |
| return $this->trustRoot; | return $this->trustRoot; |
| case 'mode': | case 'mode': |
| return empty($this->data['openid_mode']) ? null : $this->data['openid_mode']; | return empty($this->data['openid_mode']) ? null : $this->data['openid_mode']; |
| } | } |
| } | } |
| /** | /** |
| * Checks if the server specified in the url exists. | * Checks if the server specified in the url exists. |
| * | * |
| * @param $url url to check | * @param $url url to check |
| * @return true, if the server exists; false otherwise | * @return true, if the server exists; false otherwise |
| */ | */ |
| function hostExists($url) | function hostExists($url) |
| { | { |
| if (strpos($url, '/') === false) { | if (strpos($url, '/') === false) { |
| $server = $url; | $server = $url; |
| } else { | } else { |
| $server = @parse_url($url, PHP_URL_HOST); | $server = @parse_url($url, PHP_URL_HOST); |
| } | } |
| if (!$server) { | if (!$server) { |
| return false; | return false; |
| } | } |
| return !!gethostbynamel($server); | return !!gethostbynamel($server); |
| } | } |
| protected function request_curl($url, $method='GET', $params=array()) | protected function request_curl($url, $method='GET', $params=array()) |
| { | { |
| $params = http_build_query($params, '', '&'); | $params = http_build_query($params, '', '&'); |
| $curl = curl_init($url . ($method == 'GET' && $params ? '?' . $params : '')); | $curl = curl_init($url . ($method == 'GET' && $params ? '?' . $params : '')); |
| curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); | curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); |
| curl_setopt($curl, CURLOPT_HEADER, false); | curl_setopt($curl, CURLOPT_HEADER, false); |
| curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); | curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); |
| curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); | curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); |
| curl_setopt($curl, CURLOPT_HTTPHEADER, array('Accept: application/xrds+xml, */*')); | curl_setopt($curl, CURLOPT_HTTPHEADER, array('Accept: application/xrds+xml, */*')); |
| if($this->verify_peer !== null) { | if($this->verify_peer !== null) { |
| curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, $this->verify_peer); | curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, $this->verify_peer); |
| if($this->capath) { | if($this->capath) { |
| curl_setopt($curl, CURLOPT_CAPATH, $this->capath); | curl_setopt($curl, CURLOPT_CAPATH, $this->capath); |
| } | } |
| if($this->cainfo) { | if($this->cainfo) { |
| curl_setopt($curl, CURLOPT_CAINFO, $this->cainfo); | curl_setopt($curl, CURLOPT_CAINFO, $this->cainfo); |
| } | } |
| } | } |
| if ($method == 'POST') { | if ($method == 'POST') { |
| curl_setopt($curl, CURLOPT_POST, true); | curl_setopt($curl, CURLOPT_POST, true); |
| curl_setopt($curl, CURLOPT_POSTFIELDS, $params); | curl_setopt($curl, CURLOPT_POSTFIELDS, $params); |
| } elseif ($method == 'HEAD') { | } elseif ($method == 'HEAD') { |
| curl_setopt($curl, CURLOPT_HEADER, true); | curl_setopt($curl, CURLOPT_HEADER, true); |
| curl_setopt($curl, CURLOPT_NOBODY, true); | curl_setopt($curl, CURLOPT_NOBODY, true); |
| } else { | } else { |
| curl_setopt($curl, CURLOPT_HTTPGET, true); | curl_setopt($curl, CURLOPT_HTTPGET, true); |
| } | } |
| $response = curl_exec($curl); | $response = curl_exec($curl); |
| if($method == 'HEAD') { | if($method == 'HEAD') { |
| $headers = array(); | $headers = array(); |
| foreach(explode("\n", $response) as $header) { | foreach(explode("\n", $response) as $header) { |
| $pos = strpos($header,':'); | $pos = strpos($header,':'); |
| $name = strtolower(trim(substr($header, 0, $pos))); | $name = strtolower(trim(substr($header, 0, $pos))); |
| $headers[$name] = trim(substr($header, $pos+1)); | $headers[$name] = trim(substr($header, $pos+1)); |
| } | } |
| # Updating claimed_id in case of redirections. | # Updating claimed_id in case of redirections. |
| $effective_url = curl_getinfo($curl, CURLINFO_EFFECTIVE_URL); | $effective_url = curl_getinfo($curl, CURLINFO_EFFECTIVE_URL); |
| if($effective_url != $url) { | if($effective_url != $url) { |
| $this->identity = $this->claimed_id = $effective_url; | $this->identity = $this->claimed_id = $effective_url; |
| } | } |
| return $headers; | return $headers; |
| } | } |
| if (curl_errno($curl)) { | if (curl_errno($curl)) { |
| throw new ErrorException(curl_error($curl), curl_errno($curl)); | throw new ErrorException(curl_error($curl), curl_errno($curl)); |
| } | } |
| return $response; | return $response; |
| } | } |
| protected function request_streams($url, $method='GET', $params=array()) | protected function request_streams($url, $method='GET', $params=array()) |
| { | { |
| if(!$this->hostExists($url)) { | if(!$this->hostExists($url)) { |
| throw new ErrorException("Could not connect to $url.", 404); | throw new ErrorException("Could not connect to $url.", 404); |
| } | } |
| $params = http_build_query($params, '', '&'); | $params = http_build_query($params, '', '&'); |
| switch($method) { | switch($method) { |
| case 'GET': | case 'GET': |
| $opts = array( | $opts = array( |
| 'http' => array( | 'http' => array( |
| 'method' => 'GET', | 'method' => 'GET', |
| 'header' => 'Accept: application/xrds+xml, */*', | 'header' => 'Accept: application/xrds+xml, */*', |
| 'ignore_errors' => true, | 'ignore_errors' => true, |
| ), 'ssl' => array( | ), 'ssl' => array( |
| 'CN_match' => parse_url($url, PHP_URL_HOST), | 'CN_match' => parse_url($url, PHP_URL_HOST), |
| ), | ), |
| ); | ); |
| $url = $url . ($params ? '?' . $params : ''); | $url = $url . ($params ? '?' . $params : ''); |
| break; | break; |
| case 'POST': | case 'POST': |
| $opts = array( | $opts = array( |
| 'http' => array( | 'http' => array( |
| 'method' => 'POST', | 'method' => 'POST', |
| 'header' => 'Content-type: application/x-www-form-urlencoded', | 'header' => 'Content-type: application/x-www-form-urlencoded', |
| 'content' => $params, | 'content' => $params, |
| 'ignore_errors' => true, | 'ignore_errors' => true, |
| ), 'ssl' => array( | ), 'ssl' => array( |
| 'CN_match' => parse_url($url, PHP_URL_HOST), | 'CN_match' => parse_url($url, PHP_URL_HOST), |
| ), | ), |
| ); | ); |
| break; | break; |
| case 'HEAD': | case 'HEAD': |
| # We want to send a HEAD request, | # We want to send a HEAD request, |
| # but since get_headers doesn't accept $context parameter, | # but since get_headers doesn't accept $context parameter, |
| # we have to change the defaults. | # we have to change the defaults. |
| $default = stream_context_get_options(stream_context_get_default()); | $default = stream_context_get_options(stream_context_get_default()); |
| stream_context_get_default( | stream_context_get_default( |
| array( | array( |
| 'http' => array( | 'http' => array( |
| 'method' => 'HEAD', | 'method' => 'HEAD', |
| 'header' => 'Accept: application/xrds+xml, */*', | 'header' => 'Accept: application/xrds+xml, */*', |
| 'ignore_errors' => true, | 'ignore_errors' => true, |
| ), 'ssl' => array( | ), 'ssl' => array( |
| 'CN_match' => parse_url($url, PHP_URL_HOST), | 'CN_match' => parse_url($url, PHP_URL_HOST), |
| ), | ), |
| ) | ) |
| ); | ); |
| $url = $url . ($params ? '?' . $params : ''); | $url = $url . ($params ? '?' . $params : ''); |
| $headers_tmp = get_headers ($url); | $headers_tmp = get_headers ($url); |
| if(!$headers_tmp) { | if(!$headers_tmp) { |
| return array(); | return array(); |
| } | } |
| # Parsing headers. | # Parsing headers. |
| $headers = array(); | $headers = array(); |
| foreach($headers_tmp as $header) { | foreach($headers_tmp as $header) { |
| $pos = strpos($header,':'); | $pos = strpos($header,':'); |
| $name = strtolower(trim(substr($header, 0, $pos))); | $name = strtolower(trim(substr($header, 0, $pos))); |
| $headers[$name] = trim(substr($header, $pos+1)); | $headers[$name] = trim(substr($header, $pos+1)); |
| # Following possible redirections. The point is just to have | # Following possible redirections. The point is just to have |
| # claimed_id change with them, because get_headers() will | # claimed_id change with them, because get_headers() will |
| # follow redirections automatically. | # follow redirections automatically. |
| # We ignore redirections with relative paths. | # We ignore redirections with relative paths. |
| # If any known provider uses them, file a bug report. | # If any known provider uses them, file a bug report. |
| if($name == 'location') { | if($name == 'location') { |
| if(strpos($headers[$name], 'http') === 0) { | if(strpos($headers[$name], 'http') === 0) { |
| $this->identity = $this->claimed_id = $headers[$name]; | $this->identity = $this->claimed_id = $headers[$name]; |
| } elseif($headers[$name][0] == '/') { | } elseif($headers[$name][0] == '/') { |
| $parsed_url = parse_url($this->claimed_id); | $parsed_url = parse_url($this->claimed_id); |
| $this->identity = | $this->identity = |
| $this->claimed_id = $parsed_url['scheme'] . '://' | $this->claimed_id = $parsed_url['scheme'] . '://' |
| . $parsed_url['host'] | . $parsed_url['host'] |
| . $headers[$name]; | . $headers[$name]; |
| } | } |
| } | } |
| } | } |
| # And restore them. | # And restore them. |
| stream_context_get_default($default); | stream_context_get_default($default); |
| return $headers; | return $headers; |
| } | } |
| if($this->verify_peer) { | if($this->verify_peer) { |
| $opts['ssl'] += array( | $opts['ssl'] += array( |
| 'verify_peer' => true, | 'verify_peer' => true, |
| 'capath' => $this->capath, | 'capath' => $this->capath, |
| 'cafile' => $this->cainfo, | 'cafile' => $this->cainfo, |
| ); | ); |
| } | } |
| $context = stream_context_create ($opts); | $context = stream_context_create ($opts); |
| return file_get_contents($url, false, $context); | return file_get_contents($url, false, $context); |
| } | } |
| protected function request($url, $method='GET', $params=array()) | protected function request($url, $method='GET', $params=array()) |
| { | { |
| if (function_exists('curl_init') | if (function_exists('curl_init') |
| && (!in_array('https', stream_get_wrappers()) || !ini_get('safe_mode') && !ini_get('open_basedir')) | && (!in_array('https', stream_get_wrappers()) || !ini_get('safe_mode') && !ini_get('open_basedir')) |
| ) { | ) { |
| return $this->request_curl($url, $method, $params); | return $this->request_curl($url, $method, $params); |
| } | } |
| return $this->request_streams($url, $method, $params); | return $this->request_streams($url, $method, $params); |
| } | } |
| protected function build_url($url, $parts) | protected function build_url($url, $parts) |
| { | { |
| if (isset($url['query'], $parts['query'])) { | if (isset($url['query'], $parts['query'])) { |
| $parts['query'] = $url['query'] . '&' . $parts['query']; | $parts['query'] = $url['query'] . '&' . $parts['query']; |
| } | } |
| $url = $parts + $url; | $url = $parts + $url; |
| $url = $url['scheme'] . '://' | $url = $url['scheme'] . '://' |
| . (empty($url['username'])?'' | . (empty($url['username'])?'' |
| :(empty($url['password'])? "{$url['username']}@" | :(empty($url['password'])? "{$url['username']}@" |
| :"{$url['username']}:{$url['password']}@")) | :"{$url['username']}:{$url['password']}@")) |
| . $url['host'] | . $url['host'] |
| . (empty($url['port'])?'':":{$url['port']}") | . (empty($url['port'])?'':":{$url['port']}") |
| . (empty($url['path'])?'':$url['path']) | . (empty($url['path'])?'':$url['path']) |
| . (empty($url['query'])?'':"?{$url['query']}") | . (empty($url['query'])?'':"?{$url['query']}") |
| . (empty($url['fragment'])?'':"#{$url['fragment']}"); | . (empty($url['fragment'])?'':"#{$url['fragment']}"); |
| return $url; | return $url; |
| } | } |
| /** | /** |
| * Helper function used to scan for <meta>/<link> tags and extract information | * Helper function used to scan for <meta>/<link> tags and extract information |
| * from them | * from them |
| */ | */ |
| protected function htmlTag($content, $tag, $attrName, $attrValue, $valueName) | protected function htmlTag($content, $tag, $attrName, $attrValue, $valueName) |
| { | { |
| preg_match_all("#<{$tag}[^>]*$attrName=['\"].*?$attrValue.*?['\"][^>]*$valueName=['\"](.+?)['\"][^>]*/?>#i", $content, $matches1); | preg_match_all("#<{$tag}[^>]*$attrName=['\"].*?$attrValue.*?['\"][^>]*$valueName=['\"](.+?)['\"][^>]*/?>#i", $content, $matches1); |
| preg_match_all("#<{$tag}[^>]*$valueName=['\"](.+?)['\"][^>]*$attrName=['\"].*?$attrValue.*?['\"][^>]*/?>#i", $content, $matches2); | preg_match_all("#<{$tag}[^>]*$valueName=['\"](.+?)['\"][^>]*$attrName=['\"].*?$attrValue.*?['\"][^>]*/?>#i", $content, $matches2); |
| $result = array_merge($matches1[1], $matches2[1]); | $result = array_merge($matches1[1], $matches2[1]); |
| return empty($result)?false:$result[0]; | return empty($result)?false:$result[0]; |
| } | } |
| /** | /** |
| * Performs Yadis and HTML discovery. Normally not used. | * Performs Yadis and HTML discovery. Normally not used. |
| * @param $url Identity URL. | * @param $url Identity URL. |
| * @return String OP Endpoint (i.e. OpenID provider address). | * @return String OP Endpoint (i.e. OpenID provider address). |
| * @throws ErrorException | * @throws ErrorException |
| */ | */ |
| function discover($url) | function discover($url) |
| { | { |
| if (!$url) throw new ErrorException('No identity supplied.'); | if (!$url) throw new ErrorException('No identity supplied.'); |
| # Use xri.net proxy to resolve i-name identities | # Use xri.net proxy to resolve i-name identities |
| if (!preg_match('#^https?:#', $url)) { | if (!preg_match('#^https?:#', $url)) { |
| $url = "https://xri.net/$url"; | $url = "https://xri.net/$url"; |
| } | } |
| # We save the original url in case of Yadis discovery failure. | # We save the original url in case of Yadis discovery failure. |
| # It can happen when we'll be lead to an XRDS document | # It can happen when we'll be lead to an XRDS document |
| # which does not have any OpenID2 services. | # which does not have any OpenID2 services. |
| $originalUrl = $url; | $originalUrl = $url; |
| # A flag to disable yadis discovery in case of failure in headers. | # A flag to disable yadis discovery in case of failure in headers. |
| $yadis = true; | $yadis = true; |
| # We'll jump a maximum of 5 times, to avoid endless redirections. | # We'll jump a maximum of 5 times, to avoid endless redirections. |
| for ($i = 0; $i < 5; $i ++) { | for ($i = 0; $i < 5; $i ++) { |
| if ($yadis) { | if ($yadis) { |
| $headers = $this->request($url, 'HEAD'); | $headers = $this->request($url, 'HEAD'); |
| $next = false; | $next = false; |
| if (isset($headers['x-xrds-location'])) { | if (isset($headers['x-xrds-location'])) { |
| $url = $this->build_url(parse_url($url), parse_url(trim($headers['x-xrds-location']))); | $url = $this->build_url(parse_url($url), parse_url(trim($headers['x-xrds-location']))); |
| $next = true; | $next = true; |
| } | } |
| if (isset($headers['content-type']) | if (isset($headers['content-type']) |
| && (strpos($headers['content-type'], 'application/xrds+xml') !== false | && (strpos($headers['content-type'], 'application/xrds+xml') !== false |
| || strpos($headers['content-type'], 'text/xml') !== false) | || strpos($headers['content-type'], 'text/xml') !== false) |
| ) { | ) { |
| # Apparently, some providers return XRDS documents as text/html. | # Apparently, some providers return XRDS documents as text/html. |
| # While it is against the spec, allowing this here shouldn't break | # While it is against the spec, allowing this here shouldn't break |
| # compatibility with anything. | # compatibility with anything. |
| # --- | # --- |
| # Found an XRDS document, now let's find the server, and optionally delegate. | # Found an XRDS document, now let's find the server, and optionally delegate. |
| $content = $this->request($url, 'GET'); | $content = $this->request($url, 'GET'); |
| preg_match_all('#<Service.*?>(.*?)</Service>#s', $content, $m); | preg_match_all('#<Service.*?>(.*?)</Service>#s', $content, $m); |
| foreach($m[1] as $content) { | foreach($m[1] as $content) { |
| $content = ' ' . $content; # The space is added, so that strpos doesn't return 0. | $content = ' ' . $content; # The space is added, so that strpos doesn't return 0. |
| # OpenID 2 | # OpenID 2 |
| $ns = preg_quote('http://specs.openid.net/auth/2.0/'); | $ns = preg_quote('http://specs.openid.net/auth/2.0/'); |
| if(preg_match('#<Type>\s*'.$ns.'(server|signon)\s*</Type>#s', $content, $type)) { | if(preg_match('#<Type>\s*'.$ns.'(server|signon)\s*</Type>#s', $content, $type)) { |
| if ($type[1] == 'server') $this->identifier_select = true; | if ($type[1] == 'server') $this->identifier_select = true; |
| preg_match('#<URI.*?>(.*)</URI>#', $content, $server); | preg_match('#<URI.*?>(.*)</URI>#', $content, $server); |
| preg_match('#<(Local|Canonical)ID>(.*)</\1ID>#', $content, $delegate); | preg_match('#<(Local|Canonical)ID>(.*)</\1ID>#', $content, $delegate); |
| if (empty($server)) { | if (empty($server)) { |
| return false; | return false; |
| } | } |
| # Does the server advertise support for either AX or SREG? | # Does the server advertise support for either AX or SREG? |
| $this->ax = (bool) strpos($content, '<Type>http://openid.net/srv/ax/1.0</Type>'); | $this->ax = (bool) strpos($content, '<Type>http://openid.net/srv/ax/1.0</Type>'); |
| $this->sreg = strpos($content, '<Type>http://openid.net/sreg/1.0</Type>') | $this->sreg = strpos($content, '<Type>http://openid.net/sreg/1.0</Type>') |
| || strpos($content, '<Type>http://openid.net/extensions/sreg/1.1</Type>'); | || strpos($content, '<Type>http://openid.net/extensions/sreg/1.1</Type>'); |
| $server = $server[1]; | $server = $server[1]; |
| if (isset($delegate[2])) $this->identity = trim($delegate[2]); | if (isset($delegate[2])) $this->identity = trim($delegate[2]); |
| $this->version = 2; | $this->version = 2; |
| $this->server = $server; | $this->server = $server; |
| return $server; | return $server; |
| } | } |
| # OpenID 1.1 | # OpenID 1.1 |
| $ns = preg_quote('http://openid.net/signon/1.1'); | $ns = preg_quote('http://openid.net/signon/1.1'); |
| if (preg_match('#<Type>\s*'.$ns.'\s*</Type>#s', $content)) { | if (preg_match('#<Type>\s*'.$ns.'\s*</Type>#s', $content)) { |
| preg_match('#<URI.*?>(.*)</URI>#', $content, $server); | preg_match('#<URI.*?>(.*)</URI>#', $content, $server); |
| preg_match('#<.*?Delegate>(.*)</.*?Delegate>#', $content, $delegate); | preg_match('#<.*?Delegate>(.*)</.*?Delegate>#', $content, $delegate); |
| if (empty($server)) { | if (empty($server)) { |
| return false; | return false; |
| } | } |
| # AX can be used only with OpenID 2.0, so checking only SREG | # AX can be used only with OpenID 2.0, so checking only SREG |
| $this->sreg = strpos($content, '<Type>http://openid.net/sreg/1.0</Type>') | $this->sreg = strpos($content, '<Type>http://openid.net/sreg/1.0</Type>') |
| || strpos($content, '<Type>http://openid.net/extensions/sreg/1.1</Type>'); | || strpos($content, '<Type>http://openid.net/extensions/sreg/1.1</Type>'); |
| $server = $server[1]; | $server = $server[1]; |
| if (isset($delegate[1])) $this->identity = $delegate[1]; | if (isset($delegate[1])) $this->identity = $delegate[1]; |
| $this->version = 1; | $this->version = 1; |
| $this->server = $server; | $this->server = $server; |
| return $server; | return $server; |
| } | } |
| } | } |
| $next = true; | $next = true; |
| $yadis = false; | $yadis = false; |
| $url = $originalUrl; | $url = $originalUrl; |
| $content = null; | $content = null; |
| break; | break; |
| } | } |
| if ($next) continue; | if ($next) continue; |
| # There are no relevant information in headers, so we search the body. | # There are no relevant information in headers, so we search the body. |
| $content = $this->request($url, 'GET'); | $content = $this->request($url, 'GET'); |
| $location = $this->htmlTag($content, 'meta', 'http-equiv', 'X-XRDS-Location', 'content'); | $location = $this->htmlTag($content, 'meta', 'http-equiv', 'X-XRDS-Location', 'content'); |
| if ($location) { | if ($location) { |
| $url = $this->build_url(parse_url($url), parse_url($location)); | $url = $this->build_url(parse_url($url), parse_url($location)); |
| continue; | continue; |
| } | } |
| } | } |
| if (!$content) $content = $this->request($url, 'GET'); | if (!$content) $content = $this->request($url, 'GET'); |
| # At this point, the YADIS Discovery has failed, so we'll switch | # At this point, the YADIS Discovery has failed, so we'll switch |
| # to openid2 HTML discovery, then fallback to openid 1.1 discovery. | # to openid2 HTML discovery, then fallback to openid 1.1 discovery. |
| $server = $this->htmlTag($content, 'link', 'rel', 'openid2.provider', 'href'); | $server = $this->htmlTag($content, 'link', 'rel', 'openid2.provider', 'href'); |
| $delegate = $this->htmlTag($content, 'link', 'rel', 'openid2.local_id', 'href'); | $delegate = $this->htmlTag($content, 'link', 'rel', 'openid2.local_id', 'href'); |
| $this->version = 2; | $this->version = 2; |
| if (!$server) { | if (!$server) { |
| # The same with openid 1.1 | # The same with openid 1.1 |
| $server = $this->htmlTag($content, 'link', 'rel', 'openid.server', 'href'); | $server = $this->htmlTag($content, 'link', 'rel', 'openid.server', 'href'); |
| $delegate = $this->htmlTag($content, 'link', 'rel', 'openid.delegate', 'href'); | $delegate = $this->htmlTag($content, 'link', 'rel', 'openid.delegate', 'href'); |
| $this->version = 1; | $this->version = 1; |
| } | } |
| if ($server) { | if ($server) { |
| # We found an OpenID2 OP Endpoint | # We found an OpenID2 OP Endpoint |
| if ($delegate) { | if ($delegate) { |
| # We have also found an OP-Local ID. | # We have also found an OP-Local ID. |
| $this->identity = $delegate; | $this->identity = $delegate; |
| } | } |
| $this->server = $server; | $this->server = $server; |
| return $server; | return $server; |
| } | } |
| throw new ErrorException("No OpenID Server found at $url", 404); | throw new ErrorException("No OpenID Server found at $url", 404); |
| } | } |
| throw new ErrorException('Endless redirection!', 500); | throw new ErrorException('Endless redirection!', 500); |
| } | } |
| protected function sregParams() | protected function sregParams() |
| { | { |
| $params = array(); | $params = array(); |
| # We always use SREG 1.1, even if the server is advertising only support for 1.0. | # We always use SREG 1.1, even if the server is advertising only support for 1.0. |
| # That's because it's fully backwards compatibile with 1.0, and some providers | # That's because it's fully backwards compatibile with 1.0, and some providers |
| # advertise 1.0 even if they accept only 1.1. One such provider is myopenid.com | # advertise 1.0 even if they accept only 1.1. One such provider is myopenid.com |
| $params['openid.ns.sreg'] = 'http://openid.net/extensions/sreg/1.1'; | $params['openid.ns.sreg'] = 'http://openid.net/extensions/sreg/1.1'; |
| if ($this->required) { | if ($this->required) { |
| $params['openid.sreg.required'] = array(); | $params['openid.sreg.required'] = array(); |
| foreach ($this->required as $required) { | foreach ($this->required as $required) { |
| if (!isset(self::$ax_to_sreg[$required])) continue; | if (!isset(self::$ax_to_sreg[$required])) continue; |
| $params['openid.sreg.required'][] = self::$ax_to_sreg[$required]; | $params['openid.sreg.required'][] = self::$ax_to_sreg[$required]; |
| } | } |
| $params['openid.sreg.required'] = implode(',', $params['openid.sreg.required']); | $params['openid.sreg.required'] = implode(',', $params['openid.sreg.required']); |
| } | } |
| if ($this->optional) { | if ($this->optional) { |
| $params['openid.sreg.optional'] = array(); | $params['openid.sreg.optional'] = array(); |
| foreach ($this->optional as $optional) { | foreach ($this->optional as $optional) { |
| if (!isset(self::$ax_to_sreg[$optional])) continue; | if (!isset(self::$ax_to_sreg[$optional])) continue; |
| $params['openid.sreg.optional'][] = self::$ax_to_sreg[$optional]; | $params['openid.sreg.optional'][] = self::$ax_to_sreg[$optional]; |
| } | } |
| $params['openid.sreg.optional'] = implode(',', $params['openid.sreg.optional']); | $params['openid.sreg.optional'] = implode(',', $params['openid.sreg.optional']); |
| } | } |
| return $params; | return $params; |
| } | } |
| protected function axParams() | protected function axParams() |
| { | { |
| $params = array(); | $params = array(); |
| if ($this->required || $this->optional) { | if ($this->required || $this->optional) { |
| $params['openid.ns.ax'] = 'http://openid.net/srv/ax/1.0'; | $params['openid.ns.ax'] = 'http://openid.net/srv/ax/1.0'; |
| $params['openid.ax.mode'] = 'fetch_request'; | $params['openid.ax.mode'] = 'fetch_request'; |
| $this->aliases = array(); | $this->aliases = array(); |
| $counts = array(); | $counts = array(); |
| $required = array(); | $required = array(); |
| $optional = array(); | $optional = array(); |
| foreach (array('required','optional') as $type) { | foreach (array('required','optional') as $type) { |
| foreach ($this->$type as $alias => $field) { | foreach ($this->$type as $alias => $field) { |
| if (is_int($alias)) $alias = strtr($field, '/', '_'); | if (is_int($alias)) $alias = strtr($field, '/', '_'); |
| $this->aliases[$alias] = 'http://axschema.org/' . $field; | $this->aliases[$alias] = 'http://axschema.org/' . $field; |
| if (empty($counts[$alias])) $counts[$alias] = 0; | if (empty($counts[$alias])) $counts[$alias] = 0; |
| $counts[$alias] += 1; | $counts[$alias] += 1; |
| ${$type}[] = $alias; | ${$type}[] = $alias; |
| } | } |
| } | } |
| foreach ($this->aliases as $alias => $ns) { | foreach ($this->aliases as $alias => $ns) { |
| $params['openid.ax.type.' . $alias] = $ns; | $params['openid.ax.type.' . $alias] = $ns; |
| } | } |
| foreach ($counts as $alias => $count) { | foreach ($counts as $alias => $count) { |
| if ($count == 1) continue; | if ($count == 1) continue; |
| $params['openid.ax.count.' . $alias] = $count; | $params['openid.ax.count.' . $alias] = $count; |
| } | } |
| # Don't send empty ax.requied and ax.if_available. | # Don't send empty ax.requied and ax.if_available. |
| # Google and possibly other providers refuse to support ax when one of these is empty. | # Google and possibly other providers refuse to support ax when one of these is empty. |
| if($required) { | if($required) { |
| $params['openid.ax.required'] = implode(',', $required); | $params['openid.ax.required'] = implode(',', $required); |
| } | } |
| if($optional) { | if($optional) { |
| $params['openid.ax.if_available'] = implode(',', $optional); | $params['openid.ax.if_available'] = implode(',', $optional); |
| } | } |
| } | } |
| return $params; | return $params; |
| } | } |
| protected function authUrl_v1($immediate) | protected function authUrl_v1($immediate) |
| { | { |
| $returnUrl = $this->returnUrl; | $returnUrl = $this->returnUrl; |
| # If we have an openid.delegate that is different from our claimed id, | # If we have an openid.delegate that is different from our claimed id, |
| # we need to somehow preserve the claimed id between requests. | # we need to somehow preserve the claimed id between requests. |
| # The simplest way is to just send it along with the return_to url. | # The simplest way is to just send it along with the return_to url. |
| if($this->identity != $this->claimed_id) { | if($this->identity != $this->claimed_id) { |
| $returnUrl .= (strpos($returnUrl, '?') ? '&' : '?') . 'openid.claimed_id=' . $this->claimed_id; | $returnUrl .= (strpos($returnUrl, '?') ? '&' : '?') . 'openid.claimed_id=' . $this->claimed_id; |
| } | } |
| $params = array( | $params = array( |
| 'openid.return_to' => $returnUrl, | 'openid.return_to' => $returnUrl, |
| 'openid.mode' => $immediate ? 'checkid_immediate' : 'checkid_setup', | 'openid.mode' => $immediate ? 'checkid_immediate' : 'checkid_setup', |
| 'openid.identity' => $this->identity, | 'openid.identity' => $this->identity, |
| 'openid.trust_root' => $this->trustRoot, | 'openid.trust_root' => $this->trustRoot, |
| ) + $this->sregParams(); | ) + $this->sregParams(); |
| return $this->build_url(parse_url($this->server) | return $this->build_url(parse_url($this->server) |
| , array('query' => http_build_query($params, '', '&'))); | , array('query' => http_build_query($params, '', '&'))); |
| } | } |
| protected function authUrl_v2($immediate) | protected function authUrl_v2($immediate) |
| { | { |
| $params = array( | $params = array( |
| 'openid.ns' => 'http://specs.openid.net/auth/2.0', | 'openid.ns' => 'http://specs.openid.net/auth/2.0', |
| 'openid.mode' => $immediate ? 'checkid_immediate' : 'checkid_setup', | 'openid.mode' => $immediate ? 'checkid_immediate' : 'checkid_setup', |
| 'openid.return_to' => $this->returnUrl, | 'openid.return_to' => $this->returnUrl, |
| 'openid.realm' => $this->trustRoot, | 'openid.realm' => $this->trustRoot, |
| ); | ); |
| if ($this->ax) { | if ($this->ax) { |
| $params += $this->axParams(); | $params += $this->axParams(); |
| } | } |
| if ($this->sreg) { | if ($this->sreg) { |
| $params += $this->sregParams(); | $params += $this->sregParams(); |
| } | } |
| if (!$this->ax && !$this->sreg) { | if (!$this->ax && !$this->sreg) { |
| # If OP doesn't advertise either SREG, nor AX, let's send them both | # If OP doesn't advertise either SREG, nor AX, let's send them both |
| # in worst case we don't get anything in return. | # in worst case we don't get anything in return. |
| $params += $this->axParams() + $this->sregParams(); | $params += $this->axParams() + $this->sregParams(); |
| } | } |
| if ($this->identifier_select) { | if ($this->identifier_select) { |
| $params['openid.identity'] = $params['openid.claimed_id'] | $params['openid.identity'] = $params['openid.claimed_id'] |
| = 'http://specs.openid.net/auth/2.0/identifier_select'; | = 'http://specs.openid.net/auth/2.0/identifier_select'; |
| } else { | } else { |
| $params['openid.identity'] = $this->identity; | $params['openid.identity'] = $this->identity; |
| $params['openid.claimed_id'] = $this->claimed_id; | $params['openid.claimed_id'] = $this->claimed_id; |
| } | } |
| return $this->build_url(parse_url($this->server) | return $this->build_url(parse_url($this->server) |
| , array('query' => http_build_query($params, '', '&'))); | , array('query' => http_build_query($params, '', '&'))); |
| } | } |
| /** | /** |
| * Returns authentication url. Usually, you want to redirect your user to it. | * Returns authentication url. Usually, you want to redirect your user to it. |
| * @return String The authentication url. | * @return String The authentication url. |
| * @param String $select_identifier Whether to request OP to select identity for an user in OpenID 2. Does not affect OpenID 1. | * @param String $select_identifier Whether to request OP to select identity for an user in OpenID 2. Does not affect OpenID 1. |
| * @throws ErrorException | * @throws ErrorException |
| */ | */ |
| function authUrl($immediate = false) | function authUrl($immediate = false) |
| { | { |
| if ($this->setup_url && !$immediate) return $this->setup_url; | if ($this->setup_url && !$immediate) return $this->setup_url; |
| if (!$this->server) $this->discover($this->identity); | if (!$this->server) $this->discover($this->identity); |
| if ($this->version == 2) { | if ($this->version == 2) { |
| return $this->authUrl_v2($immediate); | return $this->authUrl_v2($immediate); |
| } | } |
| return $this->authUrl_v1($immediate); | return $this->authUrl_v1($immediate); |
| } | } |
| /** | /** |
| * Performs OpenID verification with the OP. | * Performs OpenID verification with the OP. |
| * @return Bool Whether the verification was successful. | * @return Bool Whether the verification was successful. |
| * @throws ErrorException | * @throws ErrorException |
| */ | */ |
| function validate() | function validate() |
| { | { |
| # If the request was using immediate mode, a failure may be reported | # If the request was using immediate mode, a failure may be reported |
| # by presenting user_setup_url (for 1.1) or reporting | # by presenting user_setup_url (for 1.1) or reporting |
| # mode 'setup_needed' (for 2.0). Also catching all modes other than | # mode 'setup_needed' (for 2.0). Also catching all modes other than |
| # id_res, in order to avoid throwing errors. | # id_res, in order to avoid throwing errors. |
| if(isset($this->data['openid_user_setup_url'])) { | if(isset($this->data['openid_user_setup_url'])) { |
| $this->setup_url = $this->data['openid_user_setup_url']; | $this->setup_url = $this->data['openid_user_setup_url']; |
| return false; | return false; |
| } | } |
| if($this->mode != 'id_res') { | if($this->mode != 'id_res') { |
| return false; | return false; |
| } | } |
| $this->claimed_id = isset($this->data['openid_claimed_id'])?$this->data['openid_claimed_id']:$this->data['openid_identity']; | $this->claimed_id = isset($this->data['openid_claimed_id'])?$this->data['openid_claimed_id']:$this->data['openid_identity']; |
| $params = array( | $params = array( |
| 'openid.assoc_handle' => $this->data['openid_assoc_handle'], | 'openid.assoc_handle' => $this->data['openid_assoc_handle'], |
| 'openid.signed' => $this->data['openid_signed'], | 'openid.signed' => $this->data['openid_signed'], |
| 'openid.sig' => $this->data['openid_sig'], | 'openid.sig' => $this->data['openid_sig'], |
| ); | ); |
| if (isset($this->data['openid_ns'])) { | if (isset($this->data['openid_ns'])) { |
| # We're dealing with an OpenID 2.0 server, so let's set an ns | # We're dealing with an OpenID 2.0 server, so let's set an ns |
| # Even though we should know location of the endpoint, | # Even though we should know location of the endpoint, |
| # we still need to verify it by discovery, so $server is not set here | # we still need to verify it by discovery, so $server is not set here |
| $params['openid.ns'] = 'http://specs.openid.net/auth/2.0'; | $params['openid.ns'] = 'http://specs.openid.net/auth/2.0'; |
| } elseif (isset($this->data['openid_claimed_id']) | } elseif (isset($this->data['openid_claimed_id']) |
| && $this->data['openid_claimed_id'] != $this->data['openid_identity'] | && $this->data['openid_claimed_id'] != $this->data['openid_identity'] |
| ) { | ) { |
| # If it's an OpenID 1 provider, and we've got claimed_id, | # If it's an OpenID 1 provider, and we've got claimed_id, |
| # we have to append it to the returnUrl, like authUrl_v1 does. | # we have to append it to the returnUrl, like authUrl_v1 does. |
| $this->returnUrl .= (strpos($this->returnUrl, '?') ? '&' : '?') | $this->returnUrl .= (strpos($this->returnUrl, '?') ? '&' : '?') |
| . 'openid.claimed_id=' . $this->claimed_id; | . 'openid.claimed_id=' . $this->claimed_id; |
| } | } |
| if ($this->data['openid_return_to'] != $this->returnUrl) { | if ($this->data['openid_return_to'] != $this->returnUrl) { |
| # The return_to url must match the url of current request. | # The return_to url must match the url of current request. |
| # I'm assuing that noone will set the returnUrl to something that doesn't make sense. | # I'm assuing that noone will set the returnUrl to something that doesn't make sense. |
| return false; | return false; |
| } | } |
| $server = $this->discover($this->claimed_id); | $server = $this->discover($this->claimed_id); |
| foreach (explode(',', $this->data['openid_signed']) as $item) { | foreach (explode(',', $this->data['openid_signed']) as $item) { |
| # Checking whether magic_quotes_gpc is turned on, because | # Checking whether magic_quotes_gpc is turned on, because |
| # the function may fail if it is. For example, when fetching | # the function may fail if it is. For example, when fetching |
| # AX namePerson, it might containg an apostrophe, which will be escaped. | # AX namePerson, it might containg an apostrophe, which will be escaped. |
| # In such case, validation would fail, since we'd send different data than OP | # In such case, validation would fail, since we'd send different data than OP |
| # wants to verify. stripslashes() should solve that problem, but we can't | # wants to verify. stripslashes() should solve that problem, but we can't |
| # use it when magic_quotes is off. | # use it when magic_quotes is off. |
| $value = $this->data['openid_' . str_replace('.','_',$item)]; | $value = $this->data['openid_' . str_replace('.','_',$item)]; |
| $params['openid.' . $item] = get_magic_quotes_gpc() ? stripslashes($value) : $value; | $params['openid.' . $item] = get_magic_quotes_gpc() ? stripslashes($value) : $value; |
| } | } |
| $params['openid.mode'] = 'check_authentication'; | $params['openid.mode'] = 'check_authentication'; |
| $response = $this->request($server, 'POST', $params); | $response = $this->request($server, 'POST', $params); |
| return preg_match('/is_valid\s*:\s*true/i', $response); | return preg_match('/is_valid\s*:\s*true/i', $response); |
| } | } |
| protected function getAxAttributes() | protected function getAxAttributes() |
| { | { |
| $alias = null; | $alias = null; |
| if (isset($this->data['openid_ns_ax']) | if (isset($this->data['openid_ns_ax']) |
| && $this->data['openid_ns_ax'] != 'http://openid.net/srv/ax/1.0' | && $this->data['openid_ns_ax'] != 'http://openid.net/srv/ax/1.0' |
| ) { # It's the most likely case, so we'll check it before | ) { # It's the most likely case, so we'll check it before |
| $alias = 'ax'; | $alias = 'ax'; |
| } else { | } else { |
| # 'ax' prefix is either undefined, or points to another extension, | # 'ax' prefix is either undefined, or points to another extension, |
| # so we search for another prefix | # so we search for another prefix |
| foreach ($this->data as $key => $val) { | foreach ($this->data as $key => $val) { |
| if (substr($key, 0, strlen('openid_ns_')) == 'openid_ns_' | if (substr($key, 0, strlen('openid_ns_')) == 'openid_ns_' |
| && $val == 'http://openid.net/srv/ax/1.0' | && $val == 'http://openid.net/srv/ax/1.0' |
| ) { | ) { |
| $alias = substr($key, strlen('openid_ns_')); | $alias = substr($key, strlen('openid_ns_')); |
| break; | break; |
| } | } |
| } | } |
| } | } |
| if (!$alias) { | if (!$alias) { |
| # An alias for AX schema has not been found, | # An alias for AX schema has not been found, |
| # so there is no AX data in the OP's response | # so there is no AX data in the OP's response |
| return array(); | return array(); |
| } | } |
| $attributes = array(); | $attributes = array(); |
| foreach (explode(',', $this->data['openid_signed']) as $key) { | foreach (explode(',', $this->data['openid_signed']) as $key) { |
| $keyMatch = $alias . '.value.'; | $keyMatch = $alias . '.value.'; |
| if (substr($key, 0, strlen($keyMatch)) != $keyMatch) { | if (substr($key, 0, strlen($keyMatch)) != $keyMatch) { |
| continue; | continue; |
| } | } |
| $key = substr($key, strlen($keyMatch)); | $key = substr($key, strlen($keyMatch)); |
| if (!isset($this->data['openid_' . $alias . '_type_' . $key])) { | if (!isset($this->data['openid_' . $alias . '_type_' . $key])) { |
| # OP is breaking the spec by returning a field without | # OP is breaking the spec by returning a field without |
| # associated ns. This shouldn't happen, but it's better | # associated ns. This shouldn't happen, but it's better |
| # to check, than cause an E_NOTICE. | # to check, than cause an E_NOTICE. |
| continue; | continue; |
| } | } |
| $value = $this->data['openid_' . $alias . '_value_' . $key]; | $value = $this->data['openid_' . $alias . '_value_' . $key]; |
| $key = substr($this->data['openid_' . $alias . '_type_' . $key], | $key = substr($this->data['openid_' . $alias . '_type_' . $key], |
| strlen('http://axschema.org/')); | strlen('http://axschema.org/')); |
| $attributes[$key] = $value; | $attributes[$key] = $value; |
| } | } |
| return $attributes; | return $attributes; |
| } | } |
| protected function getSregAttributes() | protected function getSregAttributes() |
| { | { |
| $attributes = array(); | $attributes = array(); |
| $sreg_to_ax = array_flip(self::$ax_to_sreg); | $sreg_to_ax = array_flip(self::$ax_to_sreg); |
| foreach (explode(',', $this->data['openid_signed']) as $key) { | foreach (explode(',', $this->data['openid_signed']) as $key) { |
| $keyMatch = 'sreg.'; | $keyMatch = 'sreg.'; |
| if (substr($key, 0, strlen($keyMatch)) != $keyMatch) { | if (substr($key, 0, strlen($keyMatch)) != $keyMatch) { |
| continue; | continue; |
| } | } |
| $key = substr($key, strlen($keyMatch)); | $key = substr($key, strlen($keyMatch)); |
| if (!isset($sreg_to_ax[$key])) { | if (!isset($sreg_to_ax[$key])) { |
| # The field name isn't part of the SREG spec, so we ignore it. | # The field name isn't part of the SREG spec, so we ignore it. |
| continue; | continue; |
| } | } |
| $attributes[$sreg_to_ax[$key]] = $this->data['openid_sreg_' . $key]; | $attributes[$sreg_to_ax[$key]] = $this->data['openid_sreg_' . $key]; |
| } | } |
| return $attributes; | return $attributes; |
| } | } |
| /** | /** |
| * Gets AX/SREG attributes provided by OP. should be used only after successful validaton. | * Gets AX/SREG attributes provided by OP. should be used only after successful validaton. |
| * Note that it does not guarantee that any of the required/optional parameters will be present, | * Note that it does not guarantee that any of the required/optional parameters will be present, |
| * or that there will be no other attributes besides those specified. | * or that there will be no other attributes besides those specified. |
| * In other words. OP may provide whatever information it wants to. | * In other words. OP may provide whatever information it wants to. |
| * * SREG names will be mapped to AX names. | * * SREG names will be mapped to AX names. |
| * * @return Array Array of attributes with keys being the AX schema names, e.g. 'contact/email' | * * @return Array Array of attributes with keys being the AX schema names, e.g. 'contact/email' |
| * @see http://www.axschema.org/types/ | * @see http://www.axschema.org/types/ |
| */ | */ |
| function getAttributes() | function getAttributes() |
| { | { |
| if (isset($this->data['openid_ns']) | if (isset($this->data['openid_ns']) |
| && $this->data['openid_ns'] == 'http://specs.openid.net/auth/2.0' | && $this->data['openid_ns'] == 'http://specs.openid.net/auth/2.0' |
| ) { # OpenID 2.0 | ) { # OpenID 2.0 |
| # We search for both AX and SREG attributes, with AX taking precedence. | # We search for both AX and SREG attributes, with AX taking precedence. |
| return $this->getAxAttributes() + $this->getSregAttributes(); | return $this->getAxAttributes() + $this->getSregAttributes(); |
| } | } |
| return $this->getSregAttributes(); | return $this->getSregAttributes(); |
| } | } |
| } | } |