vichali / codeigniter-oauth Goto Github PK

class Auth extends CI_Controller
{
	public function oauth($provider)
	{
		$this->load->helper('url');
		
		$this->load->spark('oauth/0.3.1');
	
		// Create an consumer from the config
		$consumer = $this->oauth->consumer(array(
			'key' => $config['key'],
			'secret' => $config['secret'],
		));

		// Load the provider
		$provider = $this->oauth->provider($provider);
		
		// Create the URL to return the user to
		$callback = site_url('account/services/callback/'.$provider->name);

		if ( ! $this->input->get_post('oauth_token'))
		{
			// Add the callback URL to the consumer
			$consumer->callback($callback);	

			// Get a request token for the consumer
			$token = $provider->request_token($consumer);

			// Store the token
			$this->session->set_userdata('oauth_token', base64_encode(serialize($token)));

			// Get the URL to the twitter login page
			$url = $provider->authorize($token, array(
				'oauth_callback' => $callback,
			));

			// Send the user off to login
			redirect($url);
		}
		else
		{
			if ($this->session->userdata('oauth_token'))
			{
				// Get the token from storage
				$token = unserialize(base64_decode($this->session->userdata('oauth_token')));
			}

			if ( ! empty($token) AND $token->access_token !== $this->input->get_post('oauth_token'))
			{	
				// Delete the token, it is not valid
				$this->session->unset_userdata('oauth_token');

				// Send the user back to the beginning
				exit('invalid token after coming back to site');
			}

			// Get the verifier
			$verifier = $this->input->get_post('oauth_verifier');

			// Store the verifier in the token
			$token->verifier($verifier);

			// Exchange the request token for an access token
			$token = $provider->access_token($consumer, $token);
		
			// We got the token, let's get some user data
			$user = $provider->get_user_info($consumer, $token);
		
			// Here you should use this information to A) look for a user B) help a new user sign up with existing data.
			// If you store it all in a cookie and redirect to a registration page this is crazy-simple.
			echo "<pre>Tokens: ";
			var_dump($token).PHP_EOL.PHP_EOL;
			
			echo "User Info: ";
			var_dump($user);
		}
	}
}