/**
* Starts the discovery process
*
* This method actually finds out which discovery method (XRI, Yadis of HTML)
* should be used and delegates the actual discovery to the corresponding
* _discovery* method
*
* @param string &$id OpenID identity URL
* @param string &$server OpenID server URL
* @param float &$version OpenID protocol version
* @return bool
*/
protected function _discovery(&$id, &$server, &$version)
{
$realId = $id;
if ($this->_storage->getDiscoveryInfo($id, $realId, $server, $version, $expire)) {
$id = $realId;
return true;
}
$xriChars = array('=', '@', '+', '$', '!', '(');
if (in_array(substr($id, 0, 1), $xriChars)) {
//It is an XRI
$xrds = $this->_httpRequest("https://xri.net/" . $id, "GET", array('query' => '', '_xrd_r' => 'application/xrds+xml'), $status);
if ($status != 200 || !is_string($response)) {
return false;
}
$return = $this->_discoveryXrds($xrds, $realId, $server, $version);
$version = 2.0;
} elseif (!($return = $this->_discoveryYadis($id, $realId, $server, $version))) {
//If Yadis discovery fails, then HTML discovery should be tried
$return = $this->_discoveryHtml($id, $server, $version);
}
if ($return) {
$expire = time() + 60 * 60;
$this->_storage->addDiscoveryInfo($id, $realId, $server, $version, $expire);
$id = $realId;
return true;
} else {
return false;
}
}
/**
* Performs discovery of identity and finds OpenID URL, OpenID server URL
* and OpenID protocol version. Returns true on succees and false on
* failure.
*
* @param string &$id OpenID identity URL
* @param string &$server OpenID server URL
* @param float &$version OpenID protocol version
* @return bool
* @todo OpenID 2.0 (7.3) XRI and Yadis discovery
*/
protected function _discovery(&$id, &$server, &$version)
{
$realId = $id;
if ($this->_storage->getDiscoveryInfo($id, $realId, $server, $version, $expire)) {
$id = $realId;
return true;
}
$response = $this->_httpRequest($id, 'GET', array(), $status);
if ($status != 200 || !is_string($response)) {
return false;
}
/* OpenID 2.0 (7.3) XRI and Yadis discovery */
if (preg_match('/<meta[^>]*http-equiv=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?X-XRDS-Location[ \\t]*[^"\']*\\1[^>]*content=(["\'])([^"\']+)\\2[^>]*\\/?>/i', $response, $r)) {
$XRDS = $r[3];
$version = 2.0;
$response = $this->_httpRequest($XRDS);
if (preg_match('/<URI>([^\\t]*)<\\/URI>/i', $response, $x)) {
$server = $x[1];
// $realId
$realId = 'http://specs.openid.net/auth/2.0/identifier_select';
} else {
$this->_setError("Unable to get URI for XRDS discovery");
}
} else {
if (preg_match('/<link[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid2.provider[ \\t]*[^"\']*\\1[^>]*href=(["\'])([^"\']+)\\2[^>]*\\/?>/i', $response, $r)) {
$version = 2.0;
$server = $r[3];
} elseif (preg_match('/<link[^>]*href=(["\'])([^"\']+)\\1[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid2.provider[ \\t]*[^"\']*\\3[^>]*\\/?>/i', $response, $r)) {
$version = 2.0;
$server = $r[2];
} elseif (preg_match('/<link[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid.server[ \\t]*[^"\']*\\1[^>]*href=(["\'])([^"\']+)\\2[^>]*\\/?>/i', $response, $r)) {
$version = 1.1;
$server = $r[3];
} elseif (preg_match('/<link[^>]*href=(["\'])([^"\']+)\\1[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid.server[ \\t]*[^"\']*\\3[^>]*\\/?>/i', $response, $r)) {
$version = 1.1;
$server = $r[2];
} else {
return false;
}
}
if ($version >= 2.0) {
if (preg_match('/<link[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid2.local_id[ \\t]*[^"\']*\\1[^>]*href=(["\'])([^"\']+)\\2[^>]*\\/?>/i', $response, $r)) {
$realId = $r[3];
} elseif (preg_match('/<link[^>]*href=(["\'])([^"\']+)\\1[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid2.local_id[ \\t]*[^"\']*\\3[^>]*\\/?>/i', $response, $r)) {
$realId = $r[2];
}
} else {
if (preg_match('/<link[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid.delegate[ \\t]*[^"\']*\\1[^>]*href=(["\'])([^"\']+)\\2[^>]*\\/?>/i', $response, $r)) {
$realId = $r[3];
} elseif (preg_match('/<link[^>]*href=(["\'])([^"\']+)\\1[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid.delegate[ \\t]*[^"\']*\\3[^>]*\\/?>/i', $response, $r)) {
$realId = $r[2];
}
}
$expire = time() + 60 * 60;
$this->_storage->addDiscoveryInfo($id, $realId, $server, $version, $expire);
$id = $realId;
return true;
}
/**
* Performs discovery of identity and finds OpenID URL, OpenID server URL
* and OpenID protocol version. Returns true on succees and false on
* failure.
*
* @param string &$id OpenID identity URL
* @param string &$server OpenID server URL
* @param float &$version OpenID protocol version
* @return bool
* @todo OpenID 2.0 (7.3) XRI and Yadis discovery
*/
protected function _discovery(&$id, &$server, &$version)
{
$realId = $id;
if ($this->_storage->getDiscoveryInfo($id, $realId, $server, $version, $expire)) {
$id = $realId;
return true;
}
/* TODO: OpenID 2.0 (7.3) XRI and Yadis discovery */
/* HTML-based discovery */
$response = $this->_httpRequest($id, 'GET', array(), $status);
if ($status != 200 || !is_string($response)) {
return false;
}
if (preg_match('/<link[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid2.provider[ \\t]*[^"\']*\\1[^>]*href=(["\'])([^"\']+)\\2[^>]*\\/?>/i', $response, $r)) {
$version = 2.0;
$server = $r[3];
} else {
if (preg_match('/<link[^>]*href=(["\'])([^"\']+)\\1[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid2.provider[ \\t]*[^"\']*\\3[^>]*\\/?>/i', $response, $r)) {
$version = 2.0;
$server = $r[2];
} else {
if (preg_match('/<link[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid.server[ \\t]*[^"\']*\\1[^>]*href=(["\'])([^"\']+)\\2[^>]*\\/?>/i', $response, $r)) {
$version = 1.1;
$server = $r[3];
} else {
if (preg_match('/<link[^>]*href=(["\'])([^"\']+)\\1[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid.server[ \\t]*[^"\']*\\3[^>]*\\/?>/i', $response, $r)) {
$version = 1.1;
$server = $r[2];
} else {
return false;
}
}
}
}
if ($version >= 2.0) {
if (preg_match('/<link[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid2.local_id[ \\t]*[^"\']*\\1[^>]*href=(["\'])([^"\']+)\\2[^>]*\\/?>/i', $response, $r)) {
$realId = $r[3];
} else {
if (preg_match('/<link[^>]*href=(["\'])([^"\']+)\\1[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid2.local_id[ \\t]*[^"\']*\\3[^>]*\\/?>/i', $response, $r)) {
$realId = $r[2];
}
}
} else {
if (preg_match('/<link[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid.delegate[ \\t]*[^"\']*\\1[^>]*href=(["\'])([^"\']+)\\2[^>]*\\/?>/i', $response, $r)) {
$realId = $r[3];
} else {
if (preg_match('/<link[^>]*href=(["\'])([^"\']+)\\1[^>]*rel=(["\'])[ \\t]*(?:[^ \\t"\']+[ \\t]+)*?openid.delegate[ \\t]*[^"\']*\\3[^>]*\\/?>/i', $response, $r)) {
$realId = $r[2];
}
}
}
$expire = time() + 60 * 60;
$this->_storage->addDiscoveryInfo($id, $realId, $server, $version, $expire);
$id = $realId;
return true;
}
/**
* Performs discovery of identity and finds OpenID URL, OpenID server URL
* and OpenID protocol version. Returns true on succees and false on
* failure.
*
* @param string &$id OpenID identity URL
* @param string &$server OpenID server URL
* @param float &$version OpenID protocol version
* @return bool
* @todo OpenID 2.0 (7.3) XRI and Yadis discovery
*/
protected function _discovery(&$id, &$server, &$version)
{
$realId = $id;
if ($this->_storage->getDiscoveryInfo($id, $realId, $server, $version, $expire)) {
$id = $realId;
return true;
}
/* TODO: OpenID 2.0 (7.3) XRI and Yadis discovery */
/* HTML-based discovery */
$response = $this->_httpRequest($id);
if (!is_string($response)) {
return false;
}
if (preg_match('/<link[^>]*rel="openid2.provider"[^>]*href="([^"]+)"[^>]*\\/?>/i', $response, $r) || preg_match('/<link[^>]*href="([^"]+)"[^>]*rel="openid2.provider"[^>]*\\/?>/i', $response, $r)) {
$version = 2.0;
} else {
if (!preg_match('/<link[^>]*rel="openid.server"[^>]*href="([^"]+)"[^>]*\\/?>/i', $response, $r) && !preg_match('/<link[^>]*href="([^"]+)"[^>]*rel="openid.server"[^>]*\\/?>/i', $response, $r)) {
return false;
}
$version = 1.1;
}
$server = $r[1];
if ($version >= 2.0) {
if (preg_match('/<link[^>]*rel="openid2.local_id"[^>]*href="([^"]+)"[^>]*\\/?>/i', $response, $r) || preg_match('/<link[^>]*href="([^"]+)"[^>]*rel="openid2.local_id"[^>]*\\/?>/i', $response, $r)) {
$realId = $r[1];
}
} else {
if (preg_match('/<link[^>]*rel="openid.delegate"[^>]*href="([^"]+)"[^>]*\\/?>/i', $response, $r) || preg_match('/<link[^>]*href="([^"]+)"[^>]*rel="openid.delegate"[^>]*\\/?>/i', $response, $r)) {
$realId = $r[1];
}
}
$expire = time() + 60 * 60;
$this->_storage->addDiscoveryInfo($id, $realId, $server, $version, $expire);
$id = $realId;
return true;
}
