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<?php |
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/** |
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* SocialConnect project |
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* @author: Patsura Dmitry https://github.com/ovr <[email protected]> |
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*/ |
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declare(strict_types=1); |
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namespace SocialConnect\OpenID; |
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use SocialConnect\Common\Exception\Unsupported; |
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use SocialConnect\OpenID\Exception\Unauthorized; |
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use SocialConnect\Provider\AbstractBaseProvider; |
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use SocialConnect\Provider\Consumer; |
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use SocialConnect\Provider\Exception\InvalidAccessToken; |
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use SocialConnect\Provider\Exception\InvalidResponse; |
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abstract class AbstractProvider extends AbstractBaseProvider |
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{ |
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/** |
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* @return string |
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*/ |
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abstract public function getOpenIdUrl(); |
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/** |
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* @var int |
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*/ |
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protected $version; |
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/** |
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* @var string |
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*/ |
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protected $loginEntrypoint; |
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/** |
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* @param bool $immediate |
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* @return string |
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*/ |
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protected function makeAuthUrlV2($immediate) |
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{ |
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$params = [ |
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'openid.ns' => 'http://specs.openid.net/auth/2.0', |
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'openid.mode' => $immediate ? 'checkid_immediate' : 'checkid_setup', |
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'openid.return_to' => $this->getRedirectUrl(), |
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'openid.realm' => $this->getRedirectUrl() |
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]; |
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$params['openid.ns.sreg'] = 'http://openid.net/extensions/sreg/1.1'; |
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$params['openid.identity'] = $params['openid.claimed_id'] = 'http://specs.openid.net/auth/2.0/identifier_select'; |
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return $this->loginEntrypoint . '?' . http_build_query($params, '', '&'); |
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} |
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/** |
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* @param string $url |
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* @return string |
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* @throws InvalidResponse |
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* @throws \Psr\Http\Client\ClientExceptionInterface |
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*/ |
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protected function discover(string $url) |
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{ |
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$response = $this->executeRequest( |
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$this->httpStack->createRequest('GET', $url) |
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); |
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$contentType = $response->getHeaderLine('Content-Type'); |
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if (strpos($contentType, 'application/xrds+xml;charset=utf-8') === false) { |
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throw new InvalidResponse( |
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'Unexpected Content-Type', |
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$response |
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); |
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} |
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$xml = new \SimpleXMLElement($response->getBody()->getContents()); |
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$this->version = 2; |
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$this->loginEntrypoint = $xml->XRD->Service->URI; |
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return $this->getOpenIdUrl(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function makeAuthUrl(): string |
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{ |
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$this->discover($this->getOpenIdUrl()); |
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return $this->makeAuthUrlV2(false); |
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} |
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/** |
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* @param string $identity |
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* @return string |
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*/ |
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abstract protected function parseUserIdFromIdentity($identity): string; |
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protected function getRequiredRequestParameter(array $requestParameters, string $key) |
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{ |
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if (isset($requestParameters[$key])) { |
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return $requestParameters[$key]; |
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} |
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throw new Unauthorized("There is no required parameter called: '${key}'"); |
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} |
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/** |
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* @param string $nonce |
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* @return int |
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* @throws Unauthorized |
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*/ |
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protected function splitNonce(string $nonce): int |
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{ |
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$result = preg_match('/(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)Z(.*)/', $nonce, $matches); |
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if ($result !== 1 || count($matches) !== 8) { |
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throw new Unauthorized('Unexpected nonce format'); |
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} |
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list(,$year, $month, $day, $hour, $min, $sec) = $matches; |
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try { |
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$timestamp = new \DateTime(); |
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$timestamp->setDate((int) $year, (int) $month, (int) $day); |
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$timestamp->setTime((int) $hour, (int) $min, (int) $sec); |
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} catch (\Throwable $e) { |
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throw new Unauthorized('Timestamp from nonce is not valid', $e->getCode(), $e); |
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} |
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return $timestamp->getTimestamp(); |
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} |
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/** |
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* @param string $nonce |
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* @return void |
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* @throws Unauthorized |
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*/ |
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protected function checkNonce(string $nonce): void |
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{ |
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$stamp = $this->splitNonce($nonce); |
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$skew = 60; |
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$now = time(); |
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if ($stamp <= $now - $skew) { |
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throw new Unauthorized("Timestamp from nonce is earlier then time() - {$skew}s"); |
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} |
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if ($stamp >= $now + $skew) { |
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throw new Unauthorized("Timestamp from nonce is older then time() + {$skew}s"); |
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} |
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} |
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/** |
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* @link http://openid.net/specs/openid-authentication-2_0.html#verification |
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* |
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* @param array $requestParameters |
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* @return AccessToken |
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* @throws InvalidAccessToken |
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* @throws InvalidResponse |
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* @throws Unauthorized |
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* @throws \Psr\Http\Client\ClientExceptionInterface |
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*/ |
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public function getAccessTokenByRequestParameters(array $requestParameters) |
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{ |
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$nonce = $this->getRequiredRequestParameter($requestParameters, 'openid_response_nonce'); |
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$this->checkNonce($nonce); |
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$params = [ |
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'openid.assoc_handle' => $this->getRequiredRequestParameter($requestParameters, 'openid_assoc_handle'), |
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'openid.signed' => $this->getRequiredRequestParameter($requestParameters, 'openid_signed'), |
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'openid.sig' => $this->getRequiredRequestParameter($requestParameters, 'openid_sig'), |
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'openid.ns' => $this->getRequiredRequestParameter($requestParameters, 'openid_ns'), |
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'openid.op_endpoint' => $requestParameters['openid_op_endpoint'], |
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'openid.claimed_id' => $requestParameters['openid_claimed_id'], |
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'openid.identity' => $requestParameters['openid_identity'], |
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'openid.return_to' => $this->getRedirectUrl(), |
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'openid.response_nonce' => $nonce, |
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'openid.mode' => 'check_authentication' |
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]; |
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if (isset($requestParameters['openid_claimed_id'])) { |
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$claimedId = $requestParameters['openid_claimed_id']; |
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} else { |
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$claimedId = $requestParameters['openid_identity']; |
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} |
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$this->discover($claimedId); |
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$response = $this->executeRequest( |
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$this->httpStack->createRequest('POST', $this->loginEntrypoint) |
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->withHeader('Content-Type', 'application/x-www-form-urlencoded') |
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->withBody($this->httpStack->createStream(http_build_query($params, '', '&'))) |
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); |
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$content = $response->getBody()->getContents(); |
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if (preg_match('/is_valid\s*:\s*true/i', $content)) { |
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return new AccessToken( |
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$requestParameters['openid_identity'], |
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$this->parseUserIdFromIdentity( |
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$requestParameters['openid_identity'] |
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) |
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); |
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} |
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throw new InvalidAccessToken; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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protected function createConsumer(array $parameters): Consumer |
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{ |
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return new Consumer( |
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$this->getRequiredStringParameter('applicationId', $parameters), |
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'' |
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); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function createAccessToken(array $information) |
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{ |
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throw new Unsupported('It\'s usefull to use this method for OpenID, are you sure?'); |
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} |
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} |
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SocialConnect /
auth
