diff --git a/library/openid.php b/library/openid.php
new file mode 100644
index 0000000000..7c88c02d82
--- /dev/null
+++ b/library/openid.php
@@ -0,0 +1,725 @@
+
+ * $openid = new LightOpenID;
+ * $openid->identity = 'ID supplied by user';
+ * header('Location: ' . $openid->authUrl());
+ *
+ * The provider then sends various parameters via GET, one of them is openid_mode.
+ * Step two is verification:
+ *
+ * if ($this->data['openid_mode']) {
+ * $openid = new LightOpenID;
+ * echo $openid->validate() ? 'Logged in.' : 'Failed';
+ * }
+ *
+ *
+ * Optionally, you can set $returnUrl and $realm (or $trustRoot, which is an alias).
+ * The default values for those are:
+ * $openid->realm = (!empty($_SERVER['HTTPS']) ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'];
+ * $openid->returnUrl = $openid->realm . $_SERVER['REQUEST_URI']; # without the query part, if present
+ * If you don't know their meaning, refer to any openid tutorial, or specification. Or just guess.
+ *
+ * AX and SREG extensions are supported.
+ * 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).
+ * For example:
+ * $openid->required = array('namePerson/friendly', 'contact/email');
+ * $openid->optional = array('namePerson/first');
+ * 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.
+ *
+ * To get the values, use $openid->getAttributes().
+ *
+ *
+ * The library requires PHP >= 5.1.2 with curl or http/https stream wrappers enabled..
+ * @author Mewp
+ * @copyright Copyright (c) 2010, Mewp
+ * @license http://www.opensource.org/licenses/mit-license.php MIT
+ */
+class LightOpenID
+{
+ public $returnUrl
+ , $required = array()
+ , $optional = array()
+ , $verify_perr = null
+ , $capath = null;
+ private $identity, $claimed_id;
+ protected $server, $version, $trustRoot, $aliases, $identifier_select = false
+ , $ax = false, $sreg = false, $data;
+ static protected $ax_to_sreg = array(
+ 'namePerson/friendly' => 'nickname',
+ 'contact/email' => 'email',
+ 'namePerson' => 'fullname',
+ 'birthDate' => 'dob',
+ 'person/gender' => 'gender',
+ 'contact/postalCode/home' => 'postcode',
+ 'contact/country/home' => 'country',
+ 'pref/language' => 'language',
+ 'pref/timezone' => 'timezone',
+ );
+
+ function __construct()
+ {
+ $this->trustRoot = (!empty($_SERVER['HTTPS']) ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'];
+ $uri = $_SERVER['REQUEST_URI'];
+ $uri = strpos($uri, '?') ? substr($uri, 0, strpos($uri, '?')) : $uri;
+ $this->returnUrl = $this->trustRoot . $uri;
+
+ $this->data = $_POST + $_GET; # OPs may send data as POST or GET.
+ }
+
+ function __set($name, $value)
+ {
+ switch ($name) {
+ case 'identity':
+ if (strlen($value = trim((String) $value))) {
+ if (preg_match('#^xri:/*#i', $value, $m)) {
+ $value = substr($value, strlen($m[0]));
+ } elseif (!preg_match('/^(?:[=@+\$!\(]|https?:)/i', $value)) {
+ $value = "http://$value";
+ }
+ if (preg_match('#^https?://[^/]+$#i', $value, $m)) {
+ $value .= '/';
+ }
+ }
+ $this->$name = $this->claimed_id = $value;
+ break;
+ case 'trustRoot':
+ case 'realm':
+ $this->trustRoot = trim($value);
+ }
+ }
+
+ function __get($name)
+ {
+ switch ($name) {
+ case 'identity':
+ # We return claimed_id instead of identity,
+ # 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)
+ return $this->claimed_id;
+ case 'trustRoot':
+ case 'realm':
+ return $this->trustRoot;
+ }
+ }
+
+ /**
+ * Checks if the server specified in the url exists.
+ *
+ * @param $url url to check
+ * @return true, if the server exists; false otherwise
+ */
+ function hostExists($url)
+ {
+ if (strpos($url, '/') === false) {
+ $server = $url;
+ } else {
+ $server = @parse_url($url, PHP_URL_HOST);
+ }
+
+ if (!$server) {
+ return false;
+ }
+
+ return !!gethostbynamel($server);
+ }
+
+ protected function request_curl($url, $method='GET', $params=array())
+ {
+ $params = http_build_query($params, '', '&');
+ $curl = curl_init($url . ($method == 'GET' && $params ? '?' . $params : ''));
+ curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
+ curl_setopt($curl, CURLOPT_HEADER, false);
+ curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
+ curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
+ curl_setopt($curl, CURLOPT_HTTPHEADER, array('Accept: application/xrds+xml, */*'));
+
+ if($this->verify_perr !== null) {
+ curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, $this->verify_peer);
+ if($this->capath) {
+ curl_setopt($curl, CURLOPT_CAPATH, $this->capath);
+ }
+ }
+
+ if ($method == 'POST') {
+ curl_setopt($curl, CURLOPT_POST, true);
+ curl_setopt($curl, CURLOPT_POSTFIELDS, $params);
+ } elseif ($method == 'HEAD') {
+ curl_setopt($curl, CURLOPT_HEADER, true);
+ curl_setopt($curl, CURLOPT_NOBODY, true);
+ } else {
+ curl_setopt($curl, CURLOPT_HTTPGET, true);
+ }
+ $response = curl_exec($curl);
+
+ if($method == 'HEAD') {
+ $headers = array();
+ foreach(explode("\n", $response) as $header) {
+ $pos = strpos($header,':');
+ $name = strtolower(trim(substr($header, 0, $pos)));
+ $headers[$name] = trim(substr($header, $pos+1));
+ }
+
+ # Updating claimed_id in case of redirections.
+ $effective_url = curl_getinfo($curl, CURLINFO_EFFECTIVE_URL);
+ if($effective_url != $url) {
+ $this->identity = $this->claimed_id = $effective_url;
+ }
+
+ return $headers;
+ }
+
+ if (curl_errno($curl)) {
+ throw new ErrorException(curl_error($curl), curl_errno($curl));
+ }
+
+ return $response;
+ }
+
+ protected function request_streams($url, $method='GET', $params=array())
+ {
+ if(!$this->hostExists($url)) {
+ throw new ErrorException('Invalid request.');
+ }
+
+ $params = http_build_query($params, '', '&');
+ switch($method) {
+ case 'GET':
+ $opts = array(
+ 'http' => array(
+ 'method' => 'GET',
+ 'header' => 'Accept: application/xrds+xml, */*',
+ 'ignore_errors' => true,
+ )
+ );
+ $url = $url . ($params ? '?' . $params : '');
+ break;
+ case 'POST':
+ $opts = array(
+ 'http' => array(
+ 'method' => 'POST',
+ 'header' => 'Content-type: application/x-www-form-urlencoded',
+ 'content' => $params,
+ 'ignore_errors' => true,
+ )
+ );
+ break;
+ case 'HEAD':
+ # We want to send a HEAD request,
+ # but since get_headers doesn't accept $context parameter,
+ # we have to change the defaults.
+ $default = stream_context_get_options(stream_context_get_default());
+ stream_context_get_default(
+ array('http' => array(
+ 'method' => 'HEAD',
+ 'header' => 'Accept: application/xrds+xml, */*',
+ 'ignore_errors' => true,
+ ))
+ );
+
+ $url = $url . ($params ? '?' . $params : '');
+ $headers_tmp = get_headers ($url);
+ if(!$headers_tmp) {
+ return array();
+ }
+
+ # Parsing headers.
+ $headers = array();
+ foreach($headers_tmp as $header) {
+ $pos = strpos($header,':');
+ $name = strtolower(trim(substr($header, 0, $pos)));
+ $headers[$name] = trim(substr($header, $pos+1));
+
+ # Following possible redirections. The point is just to have
+ # claimed_id change with them, because get_headers() will
+ # follow redirections automatically.
+ # We ignore redirections with relative paths.
+ # If any known provider uses them, file a bug report.
+ if($name == 'location') {
+ if(strpos($headers[$name], 'http') === 0) {
+ $this->identity = $this->claimed_id = $headers[$name];
+ } elseif($headers[$name][0] == '/') {
+ $parsed_url = parse_url($this->claimed_id);
+ $this->identity =
+ $this->claimed_id = $parsed_url['scheme'] . '://'
+ . $parsed_url['host']
+ . $headers[$name];
+ }
+ }
+ }
+
+ # And restore them.
+ stream_context_get_default($default);
+ return $headers;
+ }
+
+ if($this->verify_peer) {
+ $opts += array('ssl' => array(
+ 'verify_peer' => true,
+ 'capath' => $this->capath,
+ ));
+ }
+
+ $context = stream_context_create ($opts);
+
+ return file_get_contents($url, false, $context);
+ }
+
+ protected function request($url, $method='GET', $params=array())
+ {
+ if(function_exists('curl_init') && !ini_get('safe_mode')) {
+ return $this->request_curl($url, $method, $params);
+ }
+ return $this->request_streams($url, $method, $params);
+ }
+
+ protected function build_url($url, $parts)
+ {
+ if (isset($url['query'], $parts['query'])) {
+ $parts['query'] = $url['query'] . '&' . $parts['query'];
+ }
+
+ $url = $parts + $url;
+ $url = $url['scheme'] . '://'
+ . (empty($url['username'])?''
+ :(empty($url['password'])? "{$url['username']}@"
+ :"{$url['username']}:{$url['password']}@"))
+ . $url['host']
+ . (empty($url['port'])?'':":{$url['port']}")
+ . (empty($url['path'])?'':$url['path'])
+ . (empty($url['query'])?'':"?{$url['query']}")
+ . (empty($url['fragment'])?'':":{$url['fragment']}");
+ return $url;
+ }
+
+ /**
+ * Helper function used to scan for / tags and extract information
+ * from them
+ */
+ protected function htmlTag($content, $tag, $attrName, $attrValue, $valueName)
+ {
+ preg_match_all("#<{$tag}[^>]*$attrName=['\"].*?$attrValue.*?['\"][^>]*$valueName=['\"](.+?)['\"][^>]*/?>#i", $content, $matches1);
+ preg_match_all("#<{$tag}[^>]*$valueName=['\"](.+?)['\"][^>]*$attrName=['\"].*?$attrValue.*?['\"][^>]*/?>#i", $content, $matches2);
+
+ $result = array_merge($matches1[1], $matches2[1]);
+ return empty($result)?false:$result[0];
+ }
+
+ /**
+ * Performs Yadis and HTML discovery. Normally not used.
+ * @param $url Identity URL.
+ * @return String OP Endpoint (i.e. OpenID provider address).
+ * @throws ErrorException
+ */
+ function discover($url)
+ {
+ if (!$url) throw new ErrorException('No identity supplied.');
+ # Use xri.net proxy to resolve i-name identities
+ if (!preg_match('#^https?:#', $url)) {
+ $url = "https://xri.net/$url";
+ }
+
+ # We save the original url in case of Yadis discovery failure.
+ # It can happen when we'll be lead to an XRDS document
+ # which does not have any OpenID2 services.
+ $originalUrl = $url;
+
+ # A flag to disable yadis discovery in case of failure in headers.
+ $yadis = true;
+
+ # We'll jump a maximum of 5 times, to avoid endless redirections.
+ for ($i = 0; $i < 5; $i ++) {
+ if ($yadis) {
+ $headers = $this->request($url, 'HEAD');
+
+ $next = false;
+ if (isset($headers['x-xrds-location'])) {
+ $url = $this->build_url(parse_url($url), parse_url(trim($headers['x-xrds-location'])));
+ $next = true;
+ }
+
+ if (isset($headers['content-type'])
+ && strpos($headers['content-type'], 'application/xrds+xml') !== false
+ ) {
+ # Found an XRDS document, now let's find the server, and optionally delegate.
+ $content = $this->request($url, 'GET');
+
+ preg_match_all('#(.*?)#s', $content, $m);
+ foreach($m[1] as $content) {
+ $content = ' ' . $content; # The space is added, so that strpos doesn't return 0.
+
+ # OpenID 2
+ $ns = preg_quote('http://specs.openid.net/auth/2.0/');
+ if(preg_match('#\s*'.$ns.'(server|signon)\s*#s', $content, $type)) {
+ if ($type[1] == 'server') $this->identifier_select = true;
+
+ preg_match('#(.*)#', $content, $server);
+ preg_match('#<(Local|Canonical)ID>(.*)#', $content, $delegate);
+ if (empty($server)) {
+ return false;
+ }
+ # Does the server advertise support for either AX or SREG?
+ $this->ax = (bool) strpos($content, 'http://openid.net/srv/ax/1.0');
+ $this->sreg = strpos($content, 'http://openid.net/sreg/1.0')
+ || strpos($content, 'http://openid.net/extensions/sreg/1.1');
+
+ $server = $server[1];
+ if (isset($delegate[2])) $this->identity = trim($delegate[2]);
+ $this->version = 2;
+
+ $this->server = $server;
+ return $server;
+ }
+
+ # OpenID 1.1
+ $ns = preg_quote('http://openid.net/signon/1.1');
+ if (preg_match('#\s*'.$ns.'\s*#s', $content)) {
+
+ preg_match('#(.*)#', $content, $server);
+ preg_match('#<.*?Delegate>(.*)#', $content, $delegate);
+ if (empty($server)) {
+ return false;
+ }
+ # AX can be used only with OpenID 2.0, so checking only SREG
+ $this->sreg = strpos($content, 'http://openid.net/sreg/1.0')
+ || strpos($content, 'http://openid.net/extensions/sreg/1.1');
+
+ $server = $server[1];
+ if (isset($delegate[1])) $this->identity = $delegate[1];
+ $this->version = 1;
+
+ $this->server = $server;
+ return $server;
+ }
+ }
+
+ $next = true;
+ $yadis = false;
+ $url = $originalUrl;
+ $content = null;
+ break;
+ }
+ if ($next) continue;
+
+ # There are no relevant information in headers, so we search the body.
+ $content = $this->request($url, 'GET');
+ if ($location = $this->htmlTag($content, 'meta', 'http-equiv', 'X-XRDS-Location', 'content')) {
+ $url = $this->build_url(parse_url($url), parse_url($location));
+ continue;
+ }
+ }
+
+ if (!$content) $content = $this->request($url, 'GET');
+
+ # At this point, the YADIS Discovery has failed, so we'll switch
+ # to openid2 HTML discovery, then fallback to openid 1.1 discovery.
+ $server = $this->htmlTag($content, 'link', 'rel', 'openid2.provider', 'href');
+ $delegate = $this->htmlTag($content, 'link', 'rel', 'openid2.local_id', 'href');
+ $this->version = 2;
+
+ if (!$server) {
+ # The same with openid 1.1
+ $server = $this->htmlTag($content, 'link', 'rel', 'openid.server', 'href');
+ $delegate = $this->htmlTag($content, 'link', 'rel', 'openid.delegate', 'href');
+ $this->version = 1;
+ }
+
+ if ($server) {
+ # We found an OpenID2 OP Endpoint
+ if ($delegate) {
+ # We have also found an OP-Local ID.
+ $this->identity = $delegate;
+ }
+ $this->server = $server;
+ return $server;
+ }
+
+ throw new ErrorException('No servers found!');
+ }
+ throw new ErrorException('Endless redirection!');
+ }
+
+ protected function sregParams()
+ {
+ $params = array();
+ # 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
+ # advertise 1.0 even if they accept only 1.1. One such provider is myopenid.com
+ $params['openid.ns.sreg'] = 'http://openid.net/extensions/sreg/1.1';
+ if ($this->required) {
+ $params['openid.sreg.required'] = array();
+ foreach ($this->required as $required) {
+ if (!isset(self::$ax_to_sreg[$required])) continue;
+ $params['openid.sreg.required'][] = self::$ax_to_sreg[$required];
+ }
+ $params['openid.sreg.required'] = implode(',', $params['openid.sreg.required']);
+ }
+
+ if ($this->optional) {
+ $params['openid.sreg.optional'] = array();
+ foreach ($this->optional as $optional) {
+ if (!isset(self::$ax_to_sreg[$optional])) continue;
+ $params['openid.sreg.optional'][] = self::$ax_to_sreg[$optional];
+ }
+ $params['openid.sreg.optional'] = implode(',', $params['openid.sreg.optional']);
+ }
+ return $params;
+ }
+
+ protected function axParams()
+ {
+ $params = array();
+ if ($this->required || $this->optional) {
+ $params['openid.ns.ax'] = 'http://openid.net/srv/ax/1.0';
+ $params['openid.ax.mode'] = 'fetch_request';
+ $this->aliases = array();
+ $counts = array();
+ $required = array();
+ $optional = array();
+ foreach (array('required','optional') as $type) {
+ foreach ($this->$type as $alias => $field) {
+ if (is_int($alias)) $alias = strtr($field, '/', '_');
+ $this->aliases[$alias] = 'http://axschema.org/' . $field;
+ if (empty($counts[$alias])) $counts[$alias] = 0;
+ $counts[$alias] += 1;
+ ${$type}[] = $alias;
+ }
+ }
+ foreach ($this->aliases as $alias => $ns) {
+ $params['openid.ax.type.' . $alias] = $ns;
+ }
+ foreach ($counts as $alias => $count) {
+ if ($count == 1) continue;
+ $params['openid.ax.count.' . $alias] = $count;
+ }
+
+ # Don't send empty ax.requied and ax.if_available.
+ # Google and possibly other providers refuse to support ax when one of these is empty.
+ if($required) {
+ $params['openid.ax.required'] = implode(',', $required);
+ }
+ if($optional) {
+ $params['openid.ax.if_available'] = implode(',', $optional);
+ }
+ }
+ return $params;
+ }
+
+ protected function authUrl_v1()
+ {
+ $returnUrl = $this->returnUrl;
+ # If we have an openid.delegate that is different from our claimed id,
+ # we need to somehow preserve the claimed id between requests.
+ # The simplest way is to just send it along with the return_to url.
+ if($this->identity != $this->claimed_id) {
+ $returnUrl .= (strpos($returnUrl, '?') ? '&' : '?') . 'openid.claimed_id=' . $this->claimed_id;
+ }
+
+ $params = array(
+ 'openid.return_to' => $returnUrl,
+ 'openid.mode' => 'checkid_setup',
+ 'openid.identity' => $this->identity,
+ 'openid.trust_root' => $this->trustRoot,
+ ) + $this->sregParams();
+
+ return $this->build_url(parse_url($this->server)
+ , array('query' => http_build_query($params, '', '&')));
+ }
+
+ protected function authUrl_v2($identifier_select)
+ {
+ $params = array(
+ 'openid.ns' => 'http://specs.openid.net/auth/2.0',
+ 'openid.mode' => 'checkid_setup',
+ 'openid.return_to' => $this->returnUrl,
+ 'openid.realm' => $this->trustRoot,
+ );
+ if ($this->ax) {
+ $params += $this->axParams();
+ }
+ if ($this->sreg) {
+ $params += $this->sregParams();
+ }
+ if (!$this->ax && !$this->sreg) {
+ # If OP doesn't advertise either SREG, nor AX, let's send them both
+ # in worst case we don't get anything in return.
+ $params += $this->axParams() + $this->sregParams();
+ }
+
+ if ($identifier_select) {
+ $params['openid.identity'] = $params['openid.claimed_id']
+ = 'http://specs.openid.net/auth/2.0/identifier_select';
+ } else {
+ $params['openid.identity'] = $this->identity;
+ $params['openid.claimed_id'] = $this->claimed_id;
+ }
+
+ return $this->build_url(parse_url($this->server)
+ , array('query' => http_build_query($params, '', '&')));
+ }
+
+ /**
+ * Returns authentication url. Usually, you want to redirect your user to it.
+ * @return String The authentication url.
+ * @param String $select_identifier Whether to request OP to select identity for an user in OpenID 2. Does not affect OpenID 1.
+ * @throws ErrorException
+ */
+ function authUrl($identifier_select = null)
+ {
+ if (!$this->server) $this->discover($this->identity);
+
+ if ($this->version == 2) {
+ if ($identifier_select === null) {
+ return $this->authUrl_v2($this->identifier_select);
+ }
+ return $this->authUrl_v2($identifier_select);
+ }
+ return $this->authUrl_v1();
+ }
+
+ /**
+ * Performs OpenID verification with the OP.
+ * @return Bool Whether the verification was successful.
+ * @throws ErrorException
+ */
+ function validate()
+ {
+ $this->claimed_id = isset($this->data['openid_claimed_id'])?$this->data['openid_claimed_id']:$this->data['openid_identity'];
+ $params = array(
+ 'openid.assoc_handle' => $this->data['openid_assoc_handle'],
+ 'openid.signed' => $this->data['openid_signed'],
+ 'openid.sig' => $this->data['openid_sig'],
+ );
+
+ if (isset($this->data['openid_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,
+ # we still need to verify it by discovery, so $server is not set here
+ $params['openid.ns'] = 'http://specs.openid.net/auth/2.0';
+ } elseif(isset($this->data['openid_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.
+ $this->returnUrl .= (strpos($this->returnUrl, '?') ? '&' : '?')
+ . 'openid.claimed_id=' . $this->claimed_id;
+ }
+
+ if ($this->data['openid_return_to'] != $this->returnUrl) {
+ # 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.
+ return false;
+ }
+
+ $server = $this->discover($this->claimed_id);
+
+ foreach (explode(',', $this->data['openid_signed']) as $item) {
+ # Checking whether magic_quotes_gpc is turned on, because
+ # the function may fail if it is. For example, when fetching
+ # 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
+ # wants to verify. stripslashes() should solve that problem, but we can't
+ # use it when magic_quotes is off.
+ $value = $this->data['openid_' . str_replace('.','_',$item)];
+ $params['openid.' . $item] = get_magic_quotes_gpc() ? stripslashes($value) : $value;
+
+ }
+
+ $params['openid.mode'] = 'check_authentication';
+
+ $response = $this->request($server, 'POST', $params);
+
+ return preg_match('/is_valid\s*:\s*true/i', $response);
+ }
+
+ protected function getAxAttributes()
+ {
+ $alias = null;
+ if (isset($this->data['openid_ns_ax'])
+ && $this->data['openid_ns_ax'] != 'http://openid.net/srv/ax/1.0'
+ ) { # It's the most likely case, so we'll check it before
+ $alias = 'ax';
+ } else {
+ # 'ax' prefix is either undefined, or points to another extension,
+ # so we search for another prefix
+ foreach ($this->data as $key => $val) {
+ if (substr($key, 0, strlen('openid_ns_')) == 'openid_ns_'
+ && $val == 'http://openid.net/srv/ax/1.0'
+ ) {
+ $alias = substr($key, strlen('openid_ns_'));
+ break;
+ }
+ }
+ }
+ if (!$alias) {
+ # An alias for AX schema has not been found,
+ # so there is no AX data in the OP's response
+ return array();
+ }
+
+ $attributes = array();
+ foreach ($this->data as $key => $value) {
+ $keyMatch = 'openid_' . $alias . '_value_';
+ if (substr($key, 0, strlen($keyMatch)) != $keyMatch) {
+ continue;
+ }
+ $key = substr($key, strlen($keyMatch));
+ if (!isset($this->data['openid_' . $alias . '_type_' . $key])) {
+ # OP is breaking the spec by returning a field without
+ # associated ns. This shouldn't happen, but it's better
+ # to check, than cause an E_NOTICE.
+ continue;
+ }
+ $key = substr($this->data['openid_' . $alias . '_type_' . $key],
+ strlen('http://axschema.org/'));
+ $attributes[$key] = $value;
+ }
+ return $attributes;
+ }
+
+ protected function getSregAttributes()
+ {
+ $attributes = array();
+ $sreg_to_ax = array_flip(self::$ax_to_sreg);
+ foreach ($this->data as $key => $value) {
+ $keyMatch = 'openid_sreg_';
+ if (substr($key, 0, strlen($keyMatch)) != $keyMatch) {
+ continue;
+ }
+ $key = substr($key, strlen($keyMatch));
+ if (!isset($sreg_to_ax[$key])) {
+ # The field name isn't part of the SREG spec, so we ignore it.
+ continue;
+ }
+ $attributes[$sreg_to_ax[$key]] = $value;
+ }
+ return $attributes;
+ }
+
+ /**
+ * Gets AX/SREG attributes provided by OP. should be used only after successful validaton.
+ * Note that it does not guarantee that any of the required/optional parameters will be present,
+ * or that there will be no other attributes besides those specified.
+ * In other words. OP may provide whatever information it wants to.
+ * * SREG names will be mapped to AX names.
+ * * @return Array Array of attributes with keys being the AX schema names, e.g. 'contact/email'
+ * @see http://www.axschema.org/types/
+ */
+ function getAttributes()
+ {
+ if (isset($this->data['openid_ns'])
+ && $this->data['openid_ns'] == 'http://specs.openid.net/auth/2.0'
+ ) { # OpenID 2.0
+ # We search for both AX and SREG attributes, with AX taking precedence.
+ return $this->getAxAttributes() + $this->getSregAttributes();
+ }
+ return $this->getSregAttributes();
+ }
+}