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<?php |
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namespace BWC\Share\Github; |
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use BWC\Share\Net\HttpClient\HttpClientInterface; |
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use BWC\Share\Net\HttpStatusCode; |
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use Symfony\Component\HttpFoundation\RedirectResponse; |
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use Symfony\Component\HttpFoundation\Session\SessionInterface; |
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use Symfony\Component\HttpKernel\Exception\HttpException; |
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class GithubOAuth |
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{ |
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const STATE_SESSION_KEY = 'github_state'; |
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/** @var string */ |
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protected $clientId; |
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/** @var string */ |
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protected $secret; |
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/** @var \Symfony\Component\HttpFoundation\Session\SessionInterface */ |
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protected $session; |
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/** @var \BWC\Share\Net\HttpClient\HttpClientInterface */ |
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protected $httpClient; |
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/** |
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* @param string $clientId |
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* @param string $secret |
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* @param SessionInterface $session |
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* @param \BWC\Share\Net\HttpClient\HttpClientInterface $httpClient |
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*/ |
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public function __construct($clientId, $secret, SessionInterface $session, HttpClientInterface $httpClient) |
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{ |
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$this->clientId = $clientId; |
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$this->secret = $secret; |
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$this->session = $session; |
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$this->httpClient = $httpClient; |
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} |
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/** |
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* @param array $scopes |
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* @param null|string $redirectUri |
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* @return RedirectResponse |
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*/ |
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public function start(array $scopes = null, $redirectUri = null) |
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{ |
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$state = base_convert(sha1(uniqid(mt_rand(), true)), 16, 36); |
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$this->session->set(self::STATE_SESSION_KEY, $state); |
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$params = array( |
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'client_id' => $this->clientId, |
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'state' => $state |
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); |
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if ($redirectUri) { |
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$params['redirect_uri'] = $redirectUri; |
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} |
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if ($scopes) { |
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$params['scope'] = implode(',', $scopes); |
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} |
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return new RedirectResponse('https://github.com/login/oauth/authorize?'.http_build_query($params)); |
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} |
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/** |
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* @param string $state |
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* @return bool |
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*/ |
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public function isStateValid($state) |
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{ |
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if (!$state) { |
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return false; |
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} |
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$sessionState = $this->session->get(self::STATE_SESSION_KEY); |
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$this->session->remove(self::STATE_SESSION_KEY); |
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if ($state != $sessionState) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @param string $code |
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* @throws \Symfony\Component\HttpKernel\Exception\HttpException |
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* @return GithubAccessResponse |
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*/ |
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public function getAccessTokenFromCode($code) |
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{ |
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$json = $this->httpClient->post( |
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'https://github.com/login/oauth/access_token', |
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array(), |
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array( |
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'client_id' => $this->clientId, |
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'client_secret' => $this->secret, |
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'code' => $code |
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), |
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null, |
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array( |
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'Accept: application/json' |
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) |
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); |
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if ($this->httpClient->getStatusCode() != HttpStatusCode::OK) { |
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throw new HttpException($this->httpClient->getStatusCode(), $this->httpClient->getErrorText() . ' : '. $json); |
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} |
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/** @var GithubAccessResponse $result */ |
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$result = GithubAccessResponse::deserialize($json); |
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if (!$result) { |
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new \LogicException('Unable to parse github response: '.$json); |
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} |
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if ($result->error) { |
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throw new HttpException(HttpStatusCode::INTERNAL_SERVER_ERROR, $result->error.': '.$result->error_description); |
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} |
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return $result; |
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} |
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} |
Appsco /
component-share
In PHP, under loose comparison (like
==, or!=, orswitchconditions), values of different types might be equal.For
stringvalues, the empty string''is a special case, in particular the following results might be unexpected: