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AuthorizationController.php
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<?php
/**
* Authorization Server Member
*
* @package OpenEMR
* @link http://www.open-emr.org
* @author Jerry Padgett <[email protected]>
* @author Brady Miller <[email protected]>
* @copyright Copyright (c) 2020 Jerry Padgett <[email protected]>
* @copyright Copyright (c) 2020 Brady Miller <[email protected]>
* @license https://github.com/openemr/openemr/blob/master/LICENSE GNU General Public License 3
*/
namespace OpenEMR\RestControllers;
require_once(__DIR__ . "/../Common/Session/SessionUtil.php");
use DateInterval;
use Exception;
use GuzzleHttp\Client;
use Lcobucci\JWT\Parser;
use Lcobucci\JWT\Signer\Rsa\Sha256;
use Lcobucci\JWT\ValidationData;
use League\OAuth2\Server\AuthorizationServer;
use League\OAuth2\Server\CryptKey;
use League\OAuth2\Server\CryptTrait;
use League\OAuth2\Server\Exception\OAuthServerException;
use League\OAuth2\Server\Grant\AuthCodeGrant;
use League\OAuth2\Server\Grant\ClientCredentialsGrant;
use League\OAuth2\Server\RequestTypes\AuthorizationRequest;
use Nyholm\Psr7Server\ServerRequestCreator;
use OpenEMR\Common\Auth\AuthUtils;
use OpenEMR\Common\Auth\MfaUtils;
use OpenEMR\Common\Auth\OpenIDConnect\Entities\ClientEntity;
use OpenEMR\Common\Auth\OpenIDConnect\Entities\ScopeEntity;
use OpenEMR\Common\Auth\OpenIDConnect\Entities\UserEntity;
use OpenEMR\Common\Auth\OpenIDConnect\Grant\CustomClientCredentialsGrant;
use OpenEMR\Common\Auth\OpenIDConnect\Grant\CustomPasswordGrant;
use OpenEMR\Common\Auth\OpenIDConnect\Grant\CustomRefreshTokenGrant;
use OpenEMR\Common\Auth\OpenIDConnect\IdTokenSMARTResponse;
use OpenEMR\Common\Auth\OpenIDConnect\Repositories\AccessTokenRepository;
use OpenEMR\Common\Auth\OpenIDConnect\Repositories\AuthCodeRepository;
use OpenEMR\Common\Auth\OpenIDConnect\Repositories\ClientRepository;
use OpenEMR\Common\Auth\OpenIDConnect\Repositories\IdentityRepository;
use OpenEMR\Common\Auth\OpenIDConnect\Repositories\RefreshTokenRepository;
use OpenEMR\Common\Auth\OpenIDConnect\Repositories\ScopeRepository;
use OpenEMR\Common\Auth\OpenIDConnect\Repositories\UserRepository;
use OpenEMR\Common\Crypto\CryptoGen;
use OpenEMR\Common\Csrf\CsrfUtils;
use OpenEMR\Common\Http\Psr17Factory;
use OpenEMR\Common\Logging\SystemLogger;
use OpenEMR\Common\Session\SessionUtil;
use OpenEMR\Common\Utils\RandomGenUtils;
use OpenEMR\Common\Uuid\UuidRegistry;
use OpenEMR\FHIR\SMART\SmartLaunchController;
use OpenEMR\RestControllers\SMART\SMARTAuthorizationController;
use OpenEMR\Services\TrustedUserService;
use OpenIDConnectServer\ClaimExtractor;
use OpenIDConnectServer\Entities\ClaimSetEntity;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Log\LoggerInterface;
use RuntimeException;
class AuthorizationController
{
use CryptTrait;
const ENDPOINT_SCOPE_AUTHORIZE_CONFIRM = "/scope-authorize-confirm";
const GRANT_TYPE_PASSWORD = 'password';
const GRANT_TYPE_CLIENT_CREDENTIALS = 'client_credentials';
public $authBaseUrl;
public $authBaseFullUrl;
public $siteId;
private $privateKey;
private $passphrase;
private $publicKey;
private $oaEncryptionKey;
private $grantType;
private $providerForm;
private $authRequestSerial;
private $cryptoGen;
private $userId;
/**
* @var SMARTAuthorizationController
*/
private $smartAuthController;
/**
* @var LoggerInterface
*/
private $logger;
/**
* Handles CRUD operations for OAUTH2 Trusted Users
* @var TrustedUserService
*/
private $trustedUserService;
/**
* @var \RestConfig
*/
private $restConfig;
public function __construct($providerForm = true)
{
$gbl = \RestConfig::GetInstance();
$this->restConfig = $gbl;
$this->logger = new SystemLogger();
$this->siteId = $_SESSION['site_id'] ?? $gbl::$SITE;
$this->authBaseUrl = $GLOBALS['webroot'] . '/oauth2/' . $this->siteId;
$this->authBaseFullUrl = self::getAuthBaseFullURL();
// used for session stash
$this->authRequestSerial = $_SESSION['authRequestSerial'] ?? '';
// Create a crypto object that will be used for for encryption/decryption
$this->cryptoGen = new CryptoGen();
// verify and/or setup our key pairs.
$this->privateKey = $GLOBALS['OE_SITE_DIR'] . '/documents/certificates/oaprivate.key';
$this->publicKey = $GLOBALS['OE_SITE_DIR'] . '/documents/certificates/oapublic.key';
$this->configKeyPairs();
// true will display client/user server sign in. false, not.
$this->providerForm = $providerForm;
$this->smartAuthController = new SMARTAuthorizationController(
$this->logger,
$this->authBaseFullUrl,
$this->authBaseFullUrl . self::ENDPOINT_SCOPE_AUTHORIZE_CONFIRM,
__DIR__ . "/../../oauth2/"
);
$this->trustedUserService = new TrustedUserService();
}
private function configKeyPairs(): void
{
$response = $this->createServerResponse();
try {
// encryption key
$eKey = sqlQueryNoLog("SELECT `name`, `value` FROM `keys` WHERE `name` = 'oauth2key'");
if (!empty($eKey['name']) && ($eKey['name'] === 'oauth2key')) {
// collect the encryption key from database
$this->oaEncryptionKey = $this->cryptoGen->decryptStandard($eKey['value']);
if (empty($this->oaEncryptionKey)) {
// if decrypted key is empty, then critical error and must exit
$this->logger->error("OpenEMR error - oauth2 key was blank after it was decrypted, so forced exit");
throw OAuthServerException::serverError("Security error - problem with authorization server keys.");
}
} else {
// create a encryption key and store it in database
$this->oaEncryptionKey = RandomGenUtils::produceRandomBytes(32);
if (empty($this->oaEncryptionKey)) {
// if empty, then force exit
$this->logger->error("OpenEMR error - random generator broken during oauth2 encryption key generation, so forced exit");
throw OAuthServerException::serverError("Security error - problem with authorization server keys.");
}
$this->oaEncryptionKey = base64_encode($this->oaEncryptionKey);
if (empty($this->oaEncryptionKey)) {
// if empty, then force exit
$this->logger->error("OpenEMR error - base64 encoding broken during oauth2 encryption key generation, so forced exit");
throw OAuthServerException::serverError("Security error - problem with authorization server keys.");
}
sqlStatementNoLog("INSERT INTO `keys` (`name`, `value`) VALUES ('oauth2key', ?)", [$this->cryptoGen->encryptStandard($this->oaEncryptionKey)]);
}
// private key
if (!file_exists($this->privateKey)) {
// create the private/public key pair (store in filesystem) with a random passphrase (store in database)
// first, create the passphrase (removing any prior passphrases)
sqlStatementNoLog("DELETE FROM `keys` WHERE `name` = 'oauth2passphrase'");
$this->passphrase = RandomGenUtils::produceRandomString(60, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
if (empty($this->passphrase)) {
// if empty, then force exit
$this->logger->error("OpenEMR error - random generator broken during oauth2 key passphrase generation, so forced exit");
throw OAuthServerException::serverError("Security error - problem with authorization server keys.");
}
// second, create and store the private/public key pair
$keysConfig = [
"default_md" => "sha256",
"private_key_type" => OPENSSL_KEYTYPE_RSA,
"private_key_bits" => 2048,
"encrypt_key" => true,
"encrypt_key_cipher" => OPENSSL_CIPHER_AES_256_CBC
];
$keys = \openssl_pkey_new($keysConfig);
if ($keys === false) {
// if unable to create keys, then force exit
$this->logger->error("OpenEMR error - key generation broken during oauth2, so forced exit");
throw OAuthServerException::serverError("Security error - problem with authorization server keys.");
}
$privkey = '';
openssl_pkey_export($keys, $privkey, $this->passphrase, $keysConfig);
$pubkey = openssl_pkey_get_details($keys);
$pubkey = $pubkey["key"];
if (empty($privkey) || empty($pubkey)) {
// if unable to construct keys, then force exit
$this->logger->error("OpenEMR error - key construction broken during oauth2, so forced exit");
throw OAuthServerException::serverError("Security error - problem with authorization server keys.");
}
// third, store the keys on drive and store the passphrase in the database
file_put_contents($this->privateKey, $privkey);
chmod($this->privateKey, 0640);
file_put_contents($this->publicKey, $pubkey);
chmod($this->publicKey, 0660);
sqlStatementNoLog("INSERT INTO `keys` (`name`, `value`) VALUES ('oauth2passphrase', ?)", [$this->cryptoGen->encryptStandard($this->passphrase)]);
}
// confirm existence of passphrase
$pkey = sqlQueryNoLog("SELECT `name`, `value` FROM `keys` WHERE `name` = 'oauth2passphrase'");
if (!empty($pkey['name']) && ($pkey['name'] == 'oauth2passphrase')) {
$this->passphrase = $this->cryptoGen->decryptStandard($pkey['value']);
if (empty($this->passphrase)) {
// if decrypted pssphrase is empty, then critical error and must exit
$this->logger->error("OpenEMR error - oauth2 passphrase was blank after it was decrypted, so forced exit");
throw OAuthServerException::serverError("Security error - problem with authorization server keys.");
}
} else {
// oauth2passphrase is missing so must exit
$this->logger->error("OpenEMR error - oauth2 passphrase is missing, so forced exit");
throw OAuthServerException::serverError("Security error - problem with authorization server keys.");
}
// confirm existence of key pair
if (!file_exists($this->privateKey) || !file_exists($this->publicKey)) {
// key pair is missing so must exit
$this->logger->error("OpenEMR error - oauth2 keypair is missing, so forced exit");
throw OAuthServerException::serverError("Security error - problem with authorization server keys.");
}
} catch (OAuthServerException $exception) {
SessionUtil::oauthSessionCookieDestroy();
$this->emitResponse($exception->generateHttpResponse($response));
exit;
}
}
public function clientRegistration(): void
{
$response = $this->createServerResponse();
$request = $this->createServerRequest();
$headers = array();
try {
$request_headers = $request->getHeaders();
foreach ($request_headers as $header => $value) {
$headers[strtolower($header)] = $value[0];
}
if (!$headers['content-type'] || strpos($headers['content-type'], 'application/json') !== 0) {
throw new OAuthServerException('Unexpected content type', 0, 'invalid_client_metadata');
}
$json = file_get_contents('php://input');
if (!$json) {
throw new OAuthServerException('No JSON body', 0, 'invalid_client_metadata');
}
$data = json_decode($json, true);
if (!$data) {
throw new OAuthServerException('Invalid JSON', 0, 'invalid_client_metadata');
}
// many of these are optional and are here if we want to implement
$keys = array('contacts' => null,
'application_type' => null,
'client_name' => null,
'logo_uri' => null,
'redirect_uris' => null,
'post_logout_redirect_uris' => null,
'token_endpoint_auth_method' => array('client_secret_basic', 'client_secret_post'),
'policy_uri' => null,
'tos_uri' => null,
'jwks_uri' => null,
'jwks' => null,
'sector_identifier_uri' => null,
'subject_type' => array('pairwise', 'public'),
'default_max_age' => null,
'require_auth_time' => null,
'default_acr_values' => null,
'initiate_login_uri' => null, // for anything with a SMART 'launch/ehr' context we need to know how to initiate the login
'request_uris' => null,
'response_types' => null,
'grant_types' => null,
// info on scope can be seen at
// OAUTH2 Dynamic Client Registration RFC 7591 Section 2 Page 9
// @see https://tools.ietf.org/html/rfc7591#section-2
'scope' => null
);
$client_id = $this->base64url_encode(RandomGenUtils::produceRandomBytes(32));
$reg_token = $this->base64url_encode(RandomGenUtils::produceRandomBytes(32));
$reg_client_uri_path = $this->base64url_encode(RandomGenUtils::produceRandomBytes(16));
$params = array(
'client_id' => $client_id,
'client_id_issued_at' => time(),
'registration_access_token' => $reg_token,
'registration_client_uri_path' => $reg_client_uri_path
);
$params['client_role'] = 'patient';
// only include secret if a confidential app else force PKCE for native and web apps.
$client_secret = '';
if ($data['application_type'] === 'private') {
$client_secret = $this->base64url_encode(RandomGenUtils::produceRandomBytes(64));
$params['client_secret'] = $client_secret;
$params['client_role'] = 'user';
// don't allow system scopes without a jwk or jwks_uri value
if (
strpos($data['scope'], 'system/') !== false
&& empty($data['jwks']) && empty($data['jwks_uri'])
) {
throw new OAuthServerException('jwks is invalid', 0, 'invalid_client_metadata');
}
// don't allow user & system scopes for public apps
} else if (
strpos($data['scope'], 'system/') !== false
|| strpos($data['scope'], 'user/') !== false
) {
throw new OAuthServerException("system and user scopes are only allowed for confidential clients", 0, 'invalid_client_metadata');
}
$this->validateScopesAgainstServerApprovedScopes($data['scope']);
foreach ($keys as $key => $supported_values) {
if (isset($data[$key])) {
if (in_array($key, array('contacts', 'redirect_uris', 'request_uris', 'post_logout_redirect_uris', 'grant_types', 'response_types', 'default_acr_values'))) {
$params[$key] = implode('|', $data[$key]);
} elseif ($key === 'jwks') {
$params[$key] = json_encode($data[$key]);
} else {
$params[$key] = $data[$key];
}
if (!empty($supported_values)) {
if (!in_array($params[$key], $supported_values)) {
throw new OAuthServerException("Unsupported $key value : $params[$key]", 0, 'invalid_client_metadata');
}
}
}
}
if (!isset($data['redirect_uris'])) {
throw new OAuthServerException('redirect_uris is invalid', 0, 'invalid_redirect_uri');
}
if (isset($data['post_logout_redirect_uris']) && empty($data['post_logout_redirect_uris'])) {
throw new OAuthServerException('post_logout_redirect_uris is invalid', 0, 'invalid_client_metadata');
}
// save to oauth client table
$badSave = $this->newClientSave($client_id, $params);
if (!empty($badSave)) {
throw OAuthServerException::serverError("Try again. Unable to create account");
}
$reg_uri = $this->authBaseFullUrl . '/client/' . $reg_client_uri_path;
unset($params['registration_client_uri_path']);
$client_json = array(
'client_id' => $client_id,
'client_secret' => $client_secret,
'registration_access_token' => $reg_token,
'registration_client_uri' => $reg_uri,
'client_id_issued_at' => time(),
'client_secret_expires_at' => 0
);
$array_params = array('contacts', 'redirect_uris', 'request_uris', 'post_logout_redirect_uris', 'response_types', 'grant_types', 'default_acr_values');
foreach ($array_params as $aparam) {
if (isset($params[$aparam])) {
$params[$aparam] = explode('|', $params[$aparam]);
}
}
if (!empty($params['jwks'])) {
$params['jwks'] = json_decode($params['jwks'], true);
}
if (isset($params['require_auth_time'])) {
$params['require_auth_time'] = ($params['require_auth_time'] === 1);
}
// send response
$response->withHeader("Cache-Control", "no-store");
$response->withHeader("Pragma", "no-cache");
$response->withHeader('Content-Type', 'application/json');
$body = $response->getBody();
$body->write(json_encode(array_merge($client_json, $params)));
SessionUtil::oauthSessionCookieDestroy();
$this->emitResponse($response->withStatus(200)->withBody($body));
} catch (OAuthServerException $exception) {
SessionUtil::oauthSessionCookieDestroy();
$this->emitResponse($exception->generateHttpResponse($response));
}
}
/**
* Verifies that the scope string only has approved scopes for the system.
* @param $scopeString the space separated scope string
*/
private function validateScopesAgainstServerApprovedScopes($scopeString)
{
$requestScopes = explode(" ", $scopeString);
if (empty($requestScopes)) {
return;
}
$scopeRepo = new ScopeRepository($this->restConfig);
$scopeRepo->setRequestScopes($scopeString);
foreach ($requestScopes as $scope) {
$validScope = $scopeRepo->getScopeEntityByIdentifier($scope);
if (empty($validScope)) {
throw OAuthServerException::invalidScope($scope);
}
}
}
private function createServerResponse(): ResponseInterface
{
return (new Psr17Factory())->createResponse();
}
private function createServerRequest(): ServerRequestInterface
{
$psr17Factory = new Psr17Factory();
return (new ServerRequestCreator(
$psr17Factory, // ServerRequestFactory
$psr17Factory, // UriFactory
$psr17Factory, // UploadedFileFactory
$psr17Factory // StreamFactory
))->fromGlobals();
}
public function base64url_encode($data): string
{
return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
}
public function base64url_decode($token)
{
$b64 = strtr($token, '-_', '+/');
return base64_decode($b64);
}
public function newClientSave($clientId, $info): bool
{
$user = $_SESSION['authUserID'] ?? null; // future use for provider client.
$site = $this->siteId;
$is_confidential_client = empty($info['client_secret']) ? 0 : 1;
// we do not allow a confidential app to be enabled by default;
$is_client_enabled = $is_confidential_client ? 0 : 1;
$contacts = $info['contacts'];
$redirects = $info['redirect_uris'];
$logout_redirect_uris = $info['post_logout_redirect_uris'] ?? null;
$info['client_secret'] = $info['client_secret'] ?? null; // just to be sure empty is null;
// set our list of default scopes for the registration if our scope is empty
// This is how a client can set if they support SMART apps and other stuff by passing in the 'launch'
// scope to the dynamic client registration.
// per RFC 7591 @see https://tools.ietf.org/html/rfc7591#section-2
// TODO: adunsulag do we need to reject the registration if there are certain scopes here we do not support
// TODO: adunsulag should we check these scopes against our '$this->supportedScopes'?
$info['scope'] = $info['scope'] ?? 'openid email phone address api:oemr api:fhir api:port';
// if a public app requests the launch scope we also do not let them through unless they've been manually
// authorized by an administrator user.
if ($is_client_enabled) {
$is_client_enabled = strpos($info['scope'], SmartLaunchController::CLIENT_APP_REQUIRED_LAUNCH_SCOPE) !== false ? 0 : 1;
}
// encrypt the client secret
if (!empty($info['client_secret'])) {
$info['client_secret'] = $this->cryptoGen->encryptStandard($info['client_secret']);
}
try {
$sql = "INSERT INTO `oauth_clients` (`client_id`, `client_role`, `client_name`, `client_secret`, `registration_token`, `registration_uri_path`, `register_date`, `revoke_date`, `contacts`, `redirect_uri`, `grant_types`, `scope`, `user_id`, `site_id`, `is_confidential`, `logout_redirect_uris`, `jwks_uri`, `jwks`, `initiate_login_uri`, `endorsements`, `policy_uri`, `tos_uri`, `is_enabled`) VALUES (?, ?, ?, ?, ?, ?, NOW(), NULL, ?, ?, 'authorization_code', ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
$i_vals = array(
$clientId,
$info['client_role'],
$info['client_name'],
$info['client_secret'],
$info['registration_access_token'],
$info['registration_client_uri_path'],
$contacts,
$redirects,
$info['scope'],
$user,
$site,
$is_confidential_client,
$logout_redirect_uris,
($info['jwks_uri'] ?? null),
($info['jwks'] ?? null),
($info['initiate_login_uri'] ?? null),
($info['endorsements'] ?? null),
($info['policy_uri'] ?? null),
($info['tos_uri'] ?? null),
$is_client_enabled
);
return sqlQueryNoLog($sql, $i_vals);
} catch (\RuntimeException $e) {
die($e);
}
}
public function emitResponse($response): void
{
if (headers_sent()) {
throw new RuntimeException('Headers already sent.');
}
$statusLine = sprintf(
'HTTP/%s %s %s',
$response->getProtocolVersion(),
$response->getStatusCode(),
$response->getReasonPhrase()
);
header($statusLine, true);
foreach ($response->getHeaders() as $name => $values) {
$responseHeader = sprintf('%s: %s', $name, $response->getHeaderLine($name));
header($responseHeader, false);
}
// send it along.
echo $response->getBody();
}
public function clientRegisteredDetails(): void
{
$response = $this->createServerResponse();
try {
$token = $_REQUEST['access_token'];
if (!$token) {
$token = $this->getBearerToken();
if (!$token) {
throw new OAuthServerException('No Access Code', 0, 'invalid_request', 403);
}
}
$pos = strpos($_SERVER['PATH_INFO'], '/client/');
if ($pos === false) {
throw new OAuthServerException('Invalid path', 0, 'invalid_request', 403);
}
$uri_path = substr($_SERVER['PATH_INFO'], $pos + 8);
$client = sqlQuery("SELECT * FROM `oauth_clients` WHERE `registration_uri_path` = ?", array($uri_path));
if (!$client) {
throw new OAuthServerException('Invalid client', 0, 'invalid_request', 403);
}
if ($client['registration_access_token'] !== $token) {
throw new OAuthServerException('Invalid registration token', 0, 'invalid _request', 403);
}
$params['client_id'] = $client['client_id'];
$params['client_secret'] = $this->cryptoGen->decryptStandard($client['client_secret']);
$params['contacts'] = explode('|', $client['contacts']);
$params['application_type'] = $client['client_role'];
$params['client_name'] = $client['client_name'];
$params['redirect_uris'] = explode('|', $client['redirect_uri']);
$response->withHeader("Cache-Control", "no-store");
$response->withHeader("Pragma", "no-cache");
$response->withHeader('Content-Type', 'application/json');
$body = $response->getBody();
$body->write(json_encode($params));
SessionUtil::oauthSessionCookieDestroy();
$this->emitResponse($response->withStatus(200)->withBody($body));
} catch (OAuthServerException $exception) {
SessionUtil::oauthSessionCookieDestroy();
$this->emitResponse($exception->generateHttpResponse($response));
}
}
public function getBearerToken(): string
{
$request = $this->createServerRequest();
$request_headers = $request->getHeaders();
$headers = [];
foreach ($request_headers as $header => $value) {
$headers[strtolower($header)] = $value[0];
}
$authorization = $headers['authorization'];
if ($authorization) {
$pieces = explode(' ', $authorization);
if (strcasecmp($pieces[0], 'bearer') !== 0) {
return "";
}
return rtrim($pieces[1]);
}
return "";
}
public function oauthAuthorizationFlow(): void
{
$this->logger->debug("AuthorizationController->oauthAuthorizationFlow() starting authorization flow");
$response = $this->createServerResponse();
$request = $this->createServerRequest();
if ($nonce = $request->getQueryParams()['nonce']) {
$_SESSION['nonce'] = $request->getQueryParams()['nonce'];
}
$this->logger->debug("AuthorizationController->oauthAuthorizationFlow() request query params ", ["queryParams" => $request->getQueryParams()]);
$this->grantType = 'authorization_code';
$server = $this->getAuthorizationServer();
try {
// Validate the HTTP request and return an AuthorizationRequest object.
$this->logger->debug("AuthorizationController->oauthAuthorizationFlow() attempting to validate auth request");
$authRequest = $server->validateAuthorizationRequest($request);
$this->logger->debug("AuthorizationController->oauthAuthorizationFlow() auth request validated, csrf,scopes,client_id setup");
$_SESSION['csrf'] = $authRequest->getState();
$_SESSION['scopes'] = $request->getQueryParams()['scope'];
$_SESSION['client_id'] = $request->getQueryParams()['client_id'];
$_SESSION['client_role'] = $authRequest->getClient()->getClientRole();
$_SESSION['launch'] = $request->getQueryParams()['launch'] ?? null;
$this->logger->debug("AuthorizationController->oauthAuthorizationFlow() session updated", ['session' => $_SESSION]);
// If needed, serialize into a users session
if ($this->providerForm) {
$this->serializeUserSession($authRequest, $request);
$this->logger->debug("AuthorizationController->oauthAuthorizationFlow() redirecting to provider form");
// call our login then login calls authorize if approved by user
header("Location: " . $this->authBaseUrl . "/provider/login", true, 301);
exit;
}
} catch (OAuthServerException $exception) {
$this->logger->error(
"AuthorizationController->oauthAuthorizationFlow() OAuthServerException",
["hint" => $exception->getHint(), "message" => $exception->getMessage(), 'hint' => $exception->getHint(), 'trace' => $exception->getTraceAsString()]
);
SessionUtil::oauthSessionCookieDestroy();
$this->emitResponse($exception->generateHttpResponse($response));
} catch (Exception $exception) {
$this->logger->error("AuthorizationController->oauthAuthorizationFlow() Exception message: " . $exception->getMessage());
SessionUtil::oauthSessionCookieDestroy();
$body = $response->getBody();
$body->write($exception->getMessage());
$this->emitResponse($response->withStatus(500)->withBody($body));
}
}
public function getAuthorizationServer(): AuthorizationServer
{
$protectedClaims = ['profile', 'email', 'address', 'phone'];
$scopeRepository = new ScopeRepository($this->restConfig);
$claims = $scopeRepository->getSupportedClaims();
$customClaim = [];
foreach ($claims as $claim) {
if (in_array($claim, $protectedClaims, true)) {
continue;
}
$customClaim[] = new ClaimSetEntity($claim, [$claim]);
}
if (!empty($_SESSION['nonce'])) {
// nonce scope added later. this is for id token nonce claim.
$customClaim[] = new ClaimSetEntity('nonce', ['nonce']);
}
// OpenID Connect Response Type
$this->logger->debug("AuthorizationController->getAuthorizationServer() creating server");
$responseType = new IdTokenSMARTResponse(new IdentityRepository(), new ClaimExtractor($customClaim));
if (empty($this->grantType)) {
$this->grantType = 'authorization_code';
}
// responseType is cloned inside the league auth server so we have to handle changes here before we send
// into the $authServer the $responseType
if ($this->grantType === 'authorization_code') {
$responseType->markIsAuthorizationGrant(); // we have specific SMART responses for an authorization grant.
}
$authServer = new AuthorizationServer(
new ClientRepository(),
new AccessTokenRepository(),
new ScopeRepository($this->restConfig),
new CryptKey($this->privateKey, $this->passphrase),
$this->oaEncryptionKey,
$responseType
);
$this->logger->debug("AuthorizationController->getAuthorizationServer() grantType is " . $this->grantType);
if ($this->grantType === 'authorization_code') {
$grant = new AuthCodeGrant(
new AuthCodeRepository(),
new RefreshTokenRepository(),
new \DateInterval('PT1M') // auth code. should be short turn around.
);
// ONC Inferno does not support the code challenge PKCE standard right now so we disable it in the grant.
// Smart V2 http://build.fhir.org/ig/HL7/smart-app-launch/ will require PKCE with the code_challenge_method
// Note: this was true as of January 18th 2021
$grant->disableRequireCodeChallengeForPublicClients();
$grant->setRefreshTokenTTL(new \DateInterval('P3M')); // minimum per ONC
$authServer->enableGrantType(
$grant,
new \DateInterval('PT1H') // access token
);
}
if ($this->grantType === 'refresh_token') {
$grant = new CustomRefreshTokenGrant(new refreshTokenRepository());
$grant->setRefreshTokenTTL(new \DateInterval('P3M'));
$authServer->enableGrantType(
$grant,
new \DateInterval('PT1H') // The new access token will expire after 1 hour
);
}
// TODO: break this up - throw exception for not turned on.
if (!empty($GLOBALS['oauth_password_grant']) && ($this->grantType === self::GRANT_TYPE_PASSWORD)) {
$grant = new CustomPasswordGrant(
new UserRepository(),
new RefreshTokenRepository()
);
$grant->setRefreshTokenTTL(new DateInterval('P3M'));
$authServer->enableGrantType(
$grant,
new \DateInterval('PT1H') // access token
);
}
if ($this->grantType === self::GRANT_TYPE_CLIENT_CREDENTIALS) {
// Enable the client credentials grant on the server
$client_credentials = new CustomClientCredentialsGrant(AuthorizationController::getAuthBaseFullURL() . AuthorizationController::getTokenPath());
$client_credentials->setLogger($this->logger);
$client_credentials->setHttpClient(new Client()); // set our guzzle client here
$authServer->enableGrantType(
$client_credentials,
// https://hl7.org/fhir/uv/bulkdata/authorization/index.html#issuing-access-tokens Spec states 5 min max
new \DateInterval('PT300S')
);
}
$this->logger->debug("AuthorizationController->getAuthorizationServer() authServer created");
return $authServer;
}
private function serializeUserSession($authRequest, ServerRequestInterface $httpRequest): void
{
$launchParam = isset($httpRequest->getQueryParams()['launch']) ? $httpRequest->getQueryParams()['launch'] : null;
// keeping somewhat granular
try {
$scopes = $authRequest->getScopes();
$scoped = [];
foreach ($scopes as $scope) {
$scoped[] = $scope->getIdentifier();
}
$client['name'] = $authRequest->getClient()->getName();
$client['redirectUri'] = $authRequest->getClient()->getRedirectUri();
$client['identifier'] = $authRequest->getClient()->getIdentifier();
$client['isConfidential'] = $authRequest->getClient()->isConfidential();
$outer = array(
'grantTypeId' => $authRequest->getGrantTypeId(),
'authorizationApproved' => false,
'redirectUri' => $authRequest->getRedirectUri(),
'state' => $authRequest->getState(),
'codeChallenge' => $authRequest->getCodeChallenge(),
'codeChallengeMethod' => $authRequest->getCodeChallengeMethod(),
);
$result = array('outer' => $outer, 'scopes' => $scoped, 'client' => $client);
$this->authRequestSerial = json_encode($result, JSON_THROW_ON_ERROR);
$_SESSION['authRequestSerial'] = $this->authRequestSerial;
} catch (Exception $e) {
echo $e;
}
}
public function userLogin(): void
{
$response = $this->createServerResponse();
$patientRoleSupport = (!empty($GLOBALS['rest_portal_api']) || !empty($GLOBALS['rest_fhir_api']));
if (empty($_POST['username']) && empty($_POST['password'])) {
$this->logger->debug("AuthorizationController->userLogin() presenting blank login form");
$oauthLogin = true;
$redirect = $this->authBaseUrl . "/login";
require_once(__DIR__ . "/../../oauth2/provider/login.php");
exit();
}
$continueLogin = false;
if (isset($_POST['user_role'])) {
if (!CsrfUtils::verifyCsrfToken($_POST["csrf_token_form"], 'oauth2')) {
$this->logger->error("AuthorizationController->userLogin() Invalid CSRF token");
CsrfUtils::csrfNotVerified(false, true, false);
unset($_POST['username'], $_POST['password']);
$invalid = "Sorry. Invalid CSRF!"; // todo: display error
$oauthLogin = true;
$redirect = $this->authBaseUrl . "/login";
require_once(__DIR__ . "/../../oauth2/provider/login.php");
exit();
} else {
$this->logger->debug("AuthorizationController->userLogin() verifying login information");
$continueLogin = $this->verifyLogin($_POST['username'], $_POST['password'], ($_POST['email'] ?? ''), $_POST['user_role']);
$this->logger->debug("AuthorizationController->userLogin() verifyLogin result", ["continueLogin" => $continueLogin]);
}
}
if (!$continueLogin) {
$this->logger->debug("AuthorizationController->userLogin() login invalid, presenting login form");
$invalid = "Sorry, Invalid!"; // todo: display error
$oauthLogin = true;
$redirect = $this->authBaseUrl . "/login";
require_once(__DIR__ . "/../../oauth2/provider/login.php");
exit();
} else {
$this->logger->debug("AuthorizationController->userLogin() login valid, continuing oauth process");
}
//Require MFA if turned on
$mfa = new MfaUtils($this->userId);
$mfaToken = $mfa->tokenFromRequest($_POST['mfa_type'] ?? null);
$mfaType = $mfa->getType();
$TOTP = MfaUtils::TOTP;
$U2F = MfaUtils::U2F;
if ($_POST['user_role'] === 'api' && $mfa->isMfaRequired() && is_null($mfaToken)) {
$oauthLogin = true;
$mfaRequired = true;
$redirect = $this->authBaseUrl . "/login";
if (in_array(MfaUtils::U2F, $mfaType)) {
$appId = $mfa->getAppId();
$requests = $mfa->getU2fRequests();
}
require_once(__DIR__ . "/../../oauth2/provider/login.php");
exit();
}
//Check the validity of the authentication token
if ($_POST['user_role'] === 'api' && $mfa->isMfaRequired() && !is_null($mfaToken)) {
if (!$mfaToken || !$mfa->check($mfaToken, $_POST['mfa_type'])) {
$invalid = "Sorry, Invalid code!";
$oauthLogin = true;
$mfaRequired = true;
$mfaType = $mfa->getType();
$redirect = $this->authBaseUrl . "/login";
require_once(__DIR__ . "/../../oauth2/provider/login.php");
exit();
}
}
unset($_POST['username'], $_POST['password']);
$_SESSION['persist_login'] = isset($_POST['persist_login']) ? 1 : 0;
$user = new UserEntity();
$user->setIdentifier($_SESSION['user_id']);
$_SESSION['claims'] = $user->getClaims();
$oauthLogin = true;
// need to redirect to patient select if we have a launch context && this isn't a patient login
$authorize = 'authorize';
// if we need to authorize any smart context as part of our OAUTH handler we do that here
// otherwise we send on to our scope authorization confirm.
if ($this->smartAuthController->needSmartAuthorization()) {
$redirect = $this->authBaseFullUrl . $this->smartAuthController->getSmartAuthorizationPath();
} else {
$redirect = $this->authBaseFullUrl . self::ENDPOINT_SCOPE_AUTHORIZE_CONFIRM;
}
$this->logger->debug("AuthorizationController->userLogin() complete redirecting", ["scopes" => $_SESSION['scopes']
, 'claims' => $_SESSION['claims'], 'redirect' => $redirect]);
header("Location: $redirect");
exit;
}
public function scopeAuthorizeConfirm()
{
// TODO: @adunsulag if there are no scopes or claims here we probably want to show an error...
// TODO: @adunsulag this is also where we want to show a special message if the offline scope is present.
// show our scope auth piece
$oauthLogin = true;
$redirect = $this->authBaseUrl . "/device/code";
$scopeString = $_SESSION['scopes'] ?? '';
$scopes = explode(' ', $scopeString);
$claims = $_SESSION['claims'] ?? [];
require_once(__DIR__ . "/../../oauth2/provider/scope-authorize.php");
}
/**
* Checks if we are in a SMART authorization endpoint
* @param $end_point
* @return bool
*/
public function isSMARTAuthorizationEndPoint($end_point)
{
return $this->smartAuthController->isValidRoute($end_point);
}
/**
* Route handler for any SMART authorization contexts that we need for OpenEMR
* @param $end_point
*/
public function dispatchSMARTAuthorizationEndpoint($end_point)
{
return $this->smartAuthController->dispatchRoute($end_point);
}
private function verifyLogin($username, $password, $email = '', $type = 'api'): bool
{
$auth = new AuthUtils($type);
$is_true = $auth->confirmPassword($username, $password, $email);
if (!$is_true) {
$this->logger->debug("AuthorizationController->verifyLogin() login attempt failed", ['username' => $username, 'email' => $email, 'type' => $type]);
return false;
}
if ($this->userId = $auth->getUserId()) {
$_SESSION['user_id'] = $this->getUserUuid($this->userId, 'users');
$this->logger->debug("AuthorizationController->verifyLogin() user login", ['user_id' => $_SESSION['user_id'],
'username' => $username, 'email' => $email, 'type' => $type]);
return true;
}
if ($id = $auth->getPatientId()) {
$_SESSION['user_id'] = $this->getUserUuid($id, 'patient');
$this->logger->debug("AuthorizationController->verifyLogin() patient login", ['pid' => $_SESSION['user_id']
, 'username' => $username, 'email' => $email, 'type' => $type]);
$_SESSION['pid'] = $_SESSION['user_id'];
return true;
}
return false;
}
protected function getUserUuid($userId, $userRole): string
{
switch ($userRole) {
case 'users':
UuidRegistry::createMissingUuidsForTables(['users']);
$account_sql = "SELECT `uuid` FROM `users` WHERE `id` = ?";
break;
case 'patient':
UuidRegistry::createMissingUuidsForTables(['patient_data']);
$account_sql = "SELECT `uuid` FROM `patient_data` WHERE `pid` = ?";
break;
default:
return '';
}
$id = sqlQueryNoLog($account_sql, array($userId))['uuid'];
return UuidRegistry::uuidToString($id);
}
public function authorizeUser(): void
{
$this->logger->debug("AuthorizationController->authorizeUser() starting authorization");
$response = $this->createServerResponse();
$authRequest = $this->deserializeUserSession();
try {
$authRequest = $this->updateAuthRequestWithUserApprovedScopes($authRequest, $_POST['scope']);
$server = $this->getAuthorizationServer();
$user = new UserEntity();
$user->setIdentifier($_SESSION['user_id']);
$authRequest->setUser($user);
$authRequest->setAuthorizationApproved(true);
$result = $server->completeAuthorizationRequest($authRequest, $response);
$redirect = $result->getHeader('Location')[0];
$authorization = parse_url($redirect, PHP_URL_QUERY);
// stash appropriate session for token endpoint.
unset($_SESSION['authRequestSerial']);
unset($_SESSION['claims']);
$csrf_private_key = $_SESSION['csrf_private_key']; // switcheroo so this does not end up in the session cache
unset($_SESSION['csrf_private_key']);
$session_cache = json_encode($_SESSION, JSON_THROW_ON_ERROR);
$_SESSION['csrf_private_key'] = $csrf_private_key;
unset($csrf_private_key);
$code = [];
// parse scope as also a query param if needed
parse_str($authorization, $code);
$code = $code["code"];
if (isset($_POST['proceed']) && !empty($code) && !empty($session_cache)) {
if (!CsrfUtils::verifyCsrfToken($_POST["csrf_token_form"], 'oauth2')) {
CsrfUtils::csrfNotVerified(false, true, false);
throw OAuthServerException::serverError("Failed authorization due to failed CSRF check.");
} else {
$this->saveTrustedUser($_SESSION['client_id'], $_SESSION['user_id'], $_SESSION['scopes'], $_SESSION['persist_login'], $code, $session_cache);
}
} else {
if (empty($_SESSION['csrf'])) {
throw OAuthServerException::serverError("Failed authorization due to missing data.");
}
}
// Return the HTTP redirect response. Redirect is to client callback.
$this->logger->debug("AuthorizationController->authorizeUser() sending server response");
SessionUtil::oauthSessionCookieDestroy();
$this->emitResponse($result);
exit;
} catch (Exception $exception) {
$this->logger->error("AuthorizationController->authorizeUser() Exception thrown", ["message" => $exception->getMessage()]);
SessionUtil::oauthSessionCookieDestroy();
$body = $response->getBody();
$body->write($exception->getMessage());
$this->emitResponse($response->withStatus(500)->withBody($body));
}
}
private function updateAuthRequestWithUserApprovedScopes(AuthorizationRequest $request, $approvedScopes)
{
$this->logger->debug(
"AuthorizationController->updateAuthRequestWithUserApprovedScopes() attempting to update auth request with user approved scopes",
['userApprovedScopes' => $approvedScopes ]
);
$requestScopes = $request->getScopes();
$scopeUpdates = [];
// we only allow scopes from the original session request, if user approved scope it will show up here.
foreach ($requestScopes as $scope) {
if (isset($approvedScopes[$scope->getIdentifier()])) {
$scopeUpdates[] = $scope;
}
}
$this->logger->debug(
"AuthorizationController->updateAuthRequestWithUserApprovedScopes() replaced request scopes with user approved scopes",
['updatedScopes' => $scopeUpdates]
);
$request->setScopes($scopeUpdates);
return $request;
}
private function deserializeUserSession(): AuthorizationRequest