1 files changed, 304 insertions, 0 deletions
diff --git a/phpBB/phpbb/auth/provider/oauth.php b/phpBB/phpbb/auth/provider/oauth.php
new file mode 100644
index 0000000000..aeca2a4869
--- /dev/null
+++ b/phpBB/phpbb/auth/provider/oauth.php
@@ -0,0 +1,304 @@
+<?php
+/**
+*
+* @package auth
+* @copyright (c) 2013 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+use OAuth\Common\Consumer\Credentials;
+use OAuth\Common\Http\Uri\Uri;
+
+/**
+* OAuth authentication provider for phpBB3
+*
+* @package auth
+*/
+class phpbb_auth_provider_oauth extends phpbb_auth_provider_base
+{
+	/**
+	* Database driver
+	*
+	* @var phpbb_db_driver
+	*/
+	protected $db;
+
+	/**
+	* phpBB config
+	*
+	* @var phpbb_config
+	*/
+	protected $config;
+
+	/**
+	* phpBB request object
+	*
+	* @var phpbb_request
+	*/
+	protected $request;
+
+	/**
+	* phpBB user
+	*
+	* @var phpbb_user
+	*/
+	protected $user;
+
+	/**
+	* OAuth token table
+	*
+	* @var string
+	*/
+	protected $auth_provider_oauth_table;
+
+	/**
+	* Cached services once they has been created
+	*
+	* @var array Contains \OAuth\Common\Service\ServiceInterface or null
+	*/
+	protected $services;
+
+	/**
+	* Cached current uri object
+	*
+	* @var \OAuth\Common\Http\Uri\UriInterface|null
+	*/
+	protected $current_uri;
+
+	/**
+	* OAuth Authentication Constructor
+	*
+	* @param	phpbb_db_driver $db
+	* @param	phpbb_config 	$config
+	* @param	phpbb_request 	$request
+	* @param	phpbb_user 		$user
+	* @param	string			$auth_provider_oauth_table
+	*/
+	public function __construct(phpbb_db_driver $db, phpbb_config $config, phpbb_request $request, phpbb_user $user, $auth_provider_oauth_table)
+	{
+		$this->db = $db;
+		$this->config = $config;
+		$this->request = $request;
+		$this->user = $user;
+		$this->auth_provider_oauth_table = $auth_provider_oauth_table;
+		$this->services = array();
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function login($username, $password)
+	{
+		// Requst the name of the OAuth service
+		$service_name = $this->request->variable('oauth_service', '', false, phpbb_request_interface::POST);
+		if ($service_name === '')
+		{
+			return array(
+				'status'		=> LOGIN_ERROR_EXTERNAL_AUTH,
+				// TODO: change error message
+				'error_msg'		=> 'LOGIN_ERROR_EXTERNAL_AUTH_APACHE',
+				'user_row'		=> array('user_id' => ANONYMOUS),
+			);
+		}
+
+		// Get the service credentials for the given service
+		$service_credentials = $this->get_credentials($service_name);
+
+		// Check that the service has settings
+		if ($service_credentials['key'] == false || $service_credentials['secret'] == false)
+		{
+			return array(
+				'status'		=> LOGIN_ERROR_EXTERNAL_AUTH,
+				// TODO: change error message
+				'error_msg'		=> 'LOGIN_ERROR_EXTERNAL_AUTH_APACHE',
+				'user_row'		=> array('user_id' => ANONYMOUS),
+			);
+		}
+
+		$storage = new phpbb_auth_oauth_token_storage($this->db, $this->user, $service_name, $this->auth_provider_oauth_table);
+		$service = $this->get_service($service_name, $storage, $service_credentials, $this->get_scopes($service_name));
+
+		if ($this->request->is_set('code', phpbb_request_interface::GET))
+		{
+			// This was a callback request from the service provider
+			$service->requestAccessToken( $_GET['code'] );
+
+			// Send a request with it
+			$path = $this->get_path($service_name);
+			if ($path)
+			{
+				$result = json_decode( $service->request($path), true );
+			}
+
+			// Perform authentication
+		} else {
+			$url = $service->getAuthorizationUri();
+			// TODO: modify $url for the appropriate return points
+			header('Location: ' . $url);
+		}
+	}
+
+	/**
+	* Returns an array containing the service credentials belonging to requested
+	* service.
+	*
+	* @param	string	$service_name	The name of the service
+	* @return	array	An array containing the 'key' and the 'secret' of the
+	*					service in the form:
+	*						array(
+	*							'key'		=> string
+	*							'secret'	=> string
+	*						)
+	*/
+	protected function get_service_credentials($service_name)
+	{
+		return array(
+			'key'		=> $this->config['auth_oauth_' . $service_name . '_key'],
+			'secret'	=> $this->config['auth_oauth_' . $service_name . '_secret'],
+		);
+	}
+
+	/**
+	* Returns the cached current_uri object or creates and caches it if it is
+	* not already created
+	*
+	* @return	\OAuth\Common\Http\Uri\UriInterface
+	*/
+	protected function get_current_uri()
+	{
+		if ($this->current_uri)
+		{
+			return $this->current_uri;
+		}
+
+		$uri_factory = new \OAuth\Common\Http\Uri\UriFactory();
+		$current_uri = $uri_factory->createFromSuperGlobalArray($this->request->get_super_global(phpbb_request_interface::SERVER));
+		$current_uri->setQuery('');
+
+		$this->current_uri = $current_uri;
+		return $current_uri;
+	}
+
+	/**
+	* Returns the cached service object or creates a new one
+	*
+	* @param	string	$service_name			The name of the service
+	* @param	phpbb_auth_oauth_token_storage $storage
+	* @param	array	$service_credentials	{@see phpbb_auth_provider_oauth::get_service_credentials}
+	* @param	array	$scope					The scope of the request against
+	*											the api.
+	* @return	\OAuth\Common\Service\ServiceInterface
+	*/
+	protected function get_service($service_name, phpbb_auth_oauth_token_storage $storage, array $service_credentials, array $scopes = array())
+	{
+		if ($this->services[$service_name])
+		{
+			return $this->services[$service_name];
+		}
+
+		$current_uri = $this->get_current_uri();
+
+		// Setup the credentials for the requests
+		$credentials = new Credentials(
+			$service_credentials['key'],
+			$service_credentials['secret'],
+			$current_uri->getAbsoluteUri()
+		);
+
+		$service_factory = new \OAuth\ServiceFactory();
+		$this->service[$service_name] = $service_factory->createService($service_name, $credentials, $storage, $scopes);
+
+		return $this->service[$service_name];
+	}
+
+	/**
+	* Returns the scopes of the service required for authentication
+	*
+	* @param	string	$service_name
+	* @return	array	An array of the scopes required from the service
+	*/
+	protected function get_scopes($service_name)
+	{
+		$scopes = array();
+
+		switch ($service_name)
+		{
+			case 'GitHub':
+				$scopes[] = 'user';
+				break;
+			case 'google':
+				$scopes[] = 'userinfo_email';
+				$scopes[] = 'userinfo_profile';
+				break;
+			case 'instagram':
+			case 'microsoft':
+				$scopes[] = 'basic';
+				break;
+			case 'linkedin':
+				$scopes[] = 'r_basicprofile';
+				break;
+		}
+
+		return $scopes;
+	}
+
+	/**
+	* Returns the path desired of the service
+	*
+	* @param	string	$service_name
+	* @return	string|UriInterface|null	A null return means do not
+	*										request additional information.
+	*/
+	protected function get_path($service_name)
+	{
+		switch ($service_name)
+		{
+			case 'bitly':
+			case 'tumblr':
+				$path = 'user/info';
+				break;
+			case 'box':
+				$path = '/users/me';
+				break;
+			case 'facebook':
+				$path = '/me';
+				break;
+			case 'FitBit':
+				$path = 'user/-/profile.json';
+				break;
+			case 'foursquare':
+			case 'instagram':
+				$path = 'users/self';
+				break;
+			case 'GitHub':
+				$path = 'user/emails';
+				break;
+			case 'google':
+				$path = 'https://www.googleapis.com/oauth2/v1/userinfo';
+				break;
+			case 'linkedin':
+				$path = '/people/~?format=json';
+				break;
+			case 'soundCloud':
+				$path = 'me.json';
+				break;
+			case 'twitter':
+				$path = 'account/verify_credentials.json';
+				break;
+			default:
+				$path = null;
+				break;
+		}
+
+		return $path;
+	}
+}