SMartins\PassportMultiauth\Http\Middleware\MultiAuthenticate

Complexity

Total Complexity

18

Size/Duplication

Total Lines	185
Duplicated Lines	0 %

Test Coverage

Coverage

96.77%

Importance

Changes

0

7 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	9	1
A	getGuardsModels()	0	9	2
A	canBeAuthenticated()	0	5	1
A	getTokenGuard()	0	6	2
A	makeGuard()	0	5	1
B	handle()	0	70	9
A	getAccessTokenFromRequest()	0	7	2

<?php

namespace SMartins\PassportMultiauth\Http\Middleware;

use Closure;
use Illuminate\Auth\RequestGuard;
use Illuminate\Foundation\Application;
use League\OAuth2\Server\ResourceServer;
use Illuminate\Auth\AuthenticationException;
use Illuminate\Auth\Middleware\Authenticate;
use Psr\Http\Message\ServerRequestInterface;
use Illuminate\Contracts\Auth\Authenticatable;
use Illuminate\Contracts\Auth\Factory as Auth;
use SMartins\PassportMultiauth\Auth\AuthManager;
use SMartins\PassportMultiauth\PassportMultiauth;
use SMartins\PassportMultiauth\Provider as Token;
use Illuminate\Support\Facades\Auth as AuthFacade;
use SMartins\PassportMultiauth\ProviderRepository;
use SMartins\PassportMultiauth\Guards\GuardChecker;
use SMartins\PassportMultiauth\Facades\ServerRequest;
use SMartins\PassportMultiauth\Config\AuthConfigHelper;
use League\OAuth2\Server\Exception\OAuthServerException;

class MultiAuthenticate extends Authenticate
{
    /**
     * @var ResourceServer
     */
    protected $server;

    /**
     * @var ProviderRepository
     */
    protected $providers;

    /**
     * Create a new middleware instance.
     *
     * @param ResourceServer $server
     * @param ProviderRepository $providers
     * @param Auth $auth
     */
    public function __construct(
        ResourceServer $server,
        ProviderRepository $providers,
        Auth $auth
    ) {
        parent::__construct($auth);

        $this->server = $server;
        $this->providers = $providers;
    }

    /**
     * Handle an incoming request. Authenticates the guard from access token
     * used on request.
     *
     * @param \Illuminate\Http\Request $request
     * @param \Closure $next
     * @param string[] ...$guards
     * @return mixed
     *
     * @throws \Illuminate\Auth\AuthenticationException
     * @throws \SMartins\PassportMultiauth\Exceptions\MissingConfigException
     */
    public function handle($request, Closure $next, ...$guards)
    {
        // If don't has any guard follow the flow
        if (empty($guards)) {
            $this->authenticate($request, $guards);

            // Stop laravel from checking for a token if session is not set
            return $next($request);
        }

        $psrRequest = ServerRequest::createRequest($request);

        try {
            $psrRequest = $this->server->validateAuthenticatedRequest($psrRequest);

            if (! ($accessToken = $this->getAccessTokenFromRequest($psrRequest))) {
                throw new AuthenticationException('Unauthenticated', $guards);
            }

            $guard = $this->getTokenGuard($accessToken, $guards);

            // At this point, the authentication will be done by Laravel Passport default driver.
            $this->authenticate($request, $guard);

            $guardsModels = $this->getGuardsModels($guards);

            // The laravel passport will define the logged user on request.
            // The returned model can be anywhere, depending on the guard.
            $user = $request->user();

            // But we need check if the user logged has the correct guard.
            $request->setUserResolver(function ($guard) use ($user, $guardsModels) {
                // If don't exists any guard on $request->user() parameter, the
                // default user will be returned.
                // If has the guard on guards passed on middleware and the model
                // instance are the same on an guard.
                if (! $guard || (isset($guardsModels[$guard]) && $user instanceof $guardsModels[$guard])) {
                    return $user;
                }

                return null;
            });

            // After it, we'll change the passport driver behavior to get the
            // authenticated user. It'll change on methods like Auth::user(),
            // Auth::guard('company')->user(), Auth::check().
            AuthFacade::extend(
                'passport',
                function ($app, $name, array $config) use ($request) {
                    $providerGuard = AuthConfigHelper::getProviderGuard($config['provider']);
                    return tap($this->makeGuard($request, $providerGuard), function ($guard) {
                        Application::getInstance()->refresh('request', $guard, 'setRequest');
                    });
                }
            );
            AuthFacade::clearGuardsCache();
        } catch (OAuthServerException $e) {
            // If has an OAuthServerException check if has unit tests and fake
            // user authenticated.
            if (($user = PassportMultiauth::userActing()) &&
                $this->canBeAuthenticated($user, $guards)
            ) {
                return $next($request);
            }

            // @todo Check if it's the best way to handle with OAuthServerException
            throw new AuthenticationException('Unauthenticated', $guards);
        }

        return $next($request);
    }

    /**
     * @param ServerRequestInterface $request
     * @return null|Token
     */
    public function getAccessTokenFromRequest(ServerRequestInterface $request)
    {
        if (! ($tokenId = $request->getAttribute('oauth_access_token_id'))) {
            return;
        }

        return $this->providers->findForToken($tokenId);
    }

    /**
     * Check if user acting has the required guards and scopes on request.
     *
     * @param Authenticatable $user
     * @param  array $guards
     * @return bool
     * @throws \SMartins\PassportMultiauth\Exceptions\MissingConfigException
     */
    public function canBeAuthenticated(Authenticatable $user, $guards)
    {
        $userGuard = AuthConfigHelper::getUserGuard($user);

        return in_array($userGuard, $guards);
    }

    /**
     * Get guard related with token.
     *
     * @param Token $token
     * @param $guards
     * @return array
     */
    public function getTokenGuard(Token $token, $guards)
    {
        $providers = GuardChecker::getGuardsProviders($guards);

        // use only guard associated to access token provider
        return $providers->has($token->provider) ? [$providers->get($token->provider)] : [];
    }

    /**
     * @param \Illuminate\Http\Request $request
     * @param string $guard
     * @return RequestGuard
     */
    private function makeGuard($request, $guard)
    {
        return new RequestGuard(function ($request) use ($guard) {
            return $request->user($guard);
        }, $request);
    }

    /**
     * Get models from guards. It'll return an associative array where the keys
     * are the guards and the values are the correspondent models.
     *
     * @param array $guards
     * @return array
     */
    private function getGuardsModels(array $guards)
    {
        $guardsModels = [];
        foreach ($guards as $guard) {
            $provider = GuardChecker::defaultGuardProvider($guard);
            $guardsModels[$guard] = AuthConfigHelper::getProviderModel($provider);
        }

        return $guardsModels;
    }
}