<?php namespace BookStack\Auth\Access;
-use BookStack\Auth\Access;
use BookStack\Auth\User;
-use BookStack\Auth\UserRepo;
+use BookStack\Exceptions\JsonDebugException;
use BookStack\Exceptions\SamlException;
-use Illuminate\Contracts\Auth\Authenticatable;
-use Illuminate\Database\Eloquent\Builder;
-use Illuminate\Support\Facades\Log;
-
+use BookStack\Exceptions\UserRegistrationException;
+use Exception;
+use Illuminate\Support\Str;
+use OneLogin\Saml2\Auth;
+use OneLogin\Saml2\Error;
+use OneLogin\Saml2\IdPMetadataParser;
+use OneLogin\Saml2\ValidationError;
/**
* Class Saml2Service
* Handles any app-specific SAML tasks.
- * @package BookStack\Services
*/
-class Saml2Service extends Access\ExternalAuthService
+class Saml2Service extends ExternalAuthService
{
protected $config;
- protected $userRepo;
+ protected $registrationService;
protected $user;
- protected $enabled;
/**
* Saml2Service constructor.
- * @param \BookStack\Auth\UserRepo $userRepo
*/
- public function __construct(UserRepo $userRepo, User $user)
+ public function __construct(RegistrationService $registrationService, User $user)
{
- $this->config = config('services.saml');
- $this->userRepo = $userRepo;
+ $this->config = config('saml2');
+ $this->registrationService = $registrationService;
$this->user = $user;
- $this->enabled = config('saml2_settings.enabled') === true;
+ }
+
+ /**
+ * Initiate a login flow.
+ * @throws Error
+ */
+ public function login(): array
+ {
+ $toolKit = $this->getToolkit();
+ $returnRoute = url('/saml2/acs');
+ return [
+ 'url' => $toolKit->login($returnRoute, [], false, false, true),
+ 'id' => $toolKit->getLastRequestID(),
+ ];
+ }
+
+ /**
+ * Initiate a logout flow.
+ * @throws Error
+ */
+ public function logout(): array
+ {
+ $toolKit = $this->getToolkit();
+ $returnRoute = url('/');
+
+ try {
+ $url = $toolKit->logout($returnRoute, [], null, null, true);
+ $id = $toolKit->getLastRequestID();
+ } catch (Error $error) {
+ if ($error->getCode() !== Error::SAML_SINGLE_LOGOUT_NOT_SUPPORTED) {
+ throw $error;
+ }
+
+ $this->actionLogout();
+ $url = '/';
+ $id = null;
+ }
+
+ return ['url' => $url, 'id' => $id];
+ }
+
+ /**
+ * Process the ACS response from the idp and return the
+ * matching, or new if registration active, user matched to the idp.
+ * Returns null if not authenticated.
+ * @throws Error
+ * @throws SamlException
+ * @throws ValidationError
+ * @throws JsonDebugException
+ * @throws UserRegistrationException
+ */
+ public function processAcsResponse(?string $requestId): ?User
+ {
+ $toolkit = $this->getToolkit();
+ $toolkit->processResponse($requestId);
+ $errors = $toolkit->getErrors();
+
+ if (!empty($errors)) {
+ throw new Error(
+ 'Invalid ACS Response: '.implode(', ', $errors)
+ );
+ }
+
+ if (!$toolkit->isAuthenticated()) {
+ return null;
+ }
+
+ $attrs = $toolkit->getAttributes();
+ $id = $toolkit->getNameId();
+
+ return $this->processLoginCallback($id, $attrs);
+ }
+
+ /**
+ * Process a response for the single logout service.
+ * @throws Error
+ */
+ public function processSlsResponse(?string $requestId): ?string
+ {
+ $toolkit = $this->getToolkit();
+ $redirect = $toolkit->processSLO(true, $requestId, false, null, true);
+
+ $errors = $toolkit->getErrors();
+
+ if (!empty($errors)) {
+ throw new Error(
+ 'Invalid SLS Response: '.implode(', ', $errors)
+ );
+ }
+
+ $this->actionLogout();
+ return $redirect;
+ }
+
+ /**
+ * Do the required actions to log a user out.
+ */
+ protected function actionLogout()
+ {
+ auth()->logout();
+ session()->invalidate();
+ }
+
+ /**
+ * Get the metadata for this service provider.
+ * @throws Error
+ */
+ public function metadata(): string
+ {
+ $toolKit = $this->getToolkit();
+ $settings = $toolKit->getSettings();
+ $metadata = $settings->getSPMetadata();
+ $errors = $settings->validateMetadata($metadata);
+
+ if (!empty($errors)) {
+ throw new Error(
+ 'Invalid SP metadata: '.implode(', ', $errors),
+ Error::METADATA_SP_INVALID
+ );
+ }
+
+ return $metadata;
+ }
+
+ /**
+ * Load the underlying Onelogin SAML2 toolkit.
+ * @throws Error
+ * @throws Exception
+ */
+ protected function getToolkit(): Auth
+ {
+ $settings = $this->config['onelogin'];
+ $overrides = $this->config['onelogin_overrides'] ?? [];
+
+ if ($overrides && is_string($overrides)) {
+ $overrides = json_decode($overrides, true);
+ }
+
+ $metaDataSettings = [];
+ if ($this->config['autoload_from_metadata']) {
+ $metaDataSettings = IdPMetadataParser::parseRemoteXML($settings['idp']['entityId']);
+ }
+
+ $spSettings = $this->loadOneloginServiceProviderDetails();
+ $settings = array_replace_recursive($settings, $spSettings, $metaDataSettings, $overrides);
+ return new Auth($settings);
+ }
+
+ /**
+ * Load dynamic service provider options required by the onelogin toolkit.
+ */
+ protected function loadOneloginServiceProviderDetails(): array
+ {
+ $spDetails = [
+ 'entityId' => url('/saml2/metadata'),
+ 'assertionConsumerService' => [
+ 'url' => url('/saml2/acs'),
+ ],
+ 'singleLogoutService' => [
+ 'url' => url('/saml2/sls')
+ ],
+ ];
+
+ return [
+ 'baseurl' => url('/saml2'),
+ 'sp' => $spDetails
+ ];
}
/**
* Check if groups should be synced.
- * @return bool
*/
- public function shouldSyncGroups()
+ protected function shouldSyncGroups(): bool
{
- return $this->enabled && $this->config['user_to_groups'] !== false;
+ return $this->config['user_to_groups'] !== false;
}
- /** Calculate the display name
- * @param array $samlAttributes
- * @param string $defaultValue
- * @return string
+ /**
+ * Calculate the display name
*/
- protected function getUserDisplayName(array $samlAttributes, string $defaultValue)
+ protected function getUserDisplayName(array $samlAttributes, string $defaultValue): string
{
- $displayNameAttr = $this->config['display_name_attribute'];
+ $displayNameAttr = $this->config['display_name_attributes'];
$displayName = [];
foreach ($displayNameAttr as $dnAttr) {
- $dnComponent = $this->getSamlResponseAttribute($samlAttributes, $dnAttr, null);
- if ($dnComponent !== null) {
- $displayName[] = $dnComponent;
- }
+ $dnComponent = $this->getSamlResponseAttribute($samlAttributes, $dnAttr, null);
+ if ($dnComponent !== null) {
+ $displayName[] = $dnComponent;
+ }
}
if (count($displayName) == 0) {
- $displayName = $defaultValue;
+ $displayName = $defaultValue;
} else {
- $displayName = implode(' ', $displayName);
+ $displayName = implode(' ', $displayName);
}
return $displayName;
}
- protected function getUserName(array $samlAttributes, string $defaultValue)
+ /**
+ * Get the value to use as the external id saved in BookStack
+ * used to link the user to an existing BookStack DB user.
+ */
+ protected function getExternalId(array $samlAttributes, string $defaultValue)
{
- $userNameAttr = $this->config['user_name_attribute'];
-
+ $userNameAttr = $this->config['external_id_attribute'];
if ($userNameAttr === null) {
- $userName = $defaultValue;
- } else {
- $userName = $this->getSamlResponseAttribute($samlAttributes, $userNameAttr, $defaultValue);
+ return $defaultValue;
}
- return $userName;
+ return $this->getSamlResponseAttribute($samlAttributes, $userNameAttr, $defaultValue);
}
/**
* Extract the details of a user from a SAML response.
- * @param $samlID
- * @param $samlAttributes
- * @return array
*/
- public function getUserDetails($samlID, $samlAttributes)
+ protected function getUserDetails(string $samlID, $samlAttributes): array
{
$emailAttr = $this->config['email_attribute'];
- $userName = $this->getUserName($samlAttributes, $samlID);
+ $externalId = $this->getExternalId($samlAttributes, $samlID);
+
+ $defaultEmail = filter_var($samlID, FILTER_VALIDATE_EMAIL) ? $samlID : null;
+ $email = $this->getSamlResponseAttribute($samlAttributes, $emailAttr, $defaultEmail);
return [
- 'uid' => $userName,
- 'name' => $this->getUserDisplayName($samlAttributes, $userName),
- 'dn' => $samlID,
- 'email' => $this->getSamlResponseAttribute($samlAttributes, $emailAttr, null),
+ 'external_id' => $externalId,
+ 'name' => $this->getUserDisplayName($samlAttributes, $externalId),
+ 'email' => $email,
+ 'saml_id' => $samlID,
];
}
/**
* Get the groups a user is a part of from the SAML response.
- * @param array $samlAttributes
- * @return array
*/
- public function getUserGroups($samlAttributes)
+ public function getUserGroups(array $samlAttributes): array
{
$groupsAttr = $this->config['group_attribute'];
- $userGroups = $samlAttributes[$groupsAttr];
+ $userGroups = $samlAttributes[$groupsAttr] ?? null;
if (!is_array($userGroups)) {
$userGroups = [];
}
/**
- * Get a property from an SAML response.
- * Handles properties potentially being an array.
- * @param array $userDetails
- * @param string $propertyKey
- * @param $defaultValue
- * @return mixed
+ * For an array of strings, return a default for an empty array,
+ * a string for an array with one element and the full array for
+ * more than one element.
*/
- protected function getSamlResponseAttribute(array $samlAttributes, string $propertyKey, $defaultValue)
+ protected function simplifyValue(array $data, $defaultValue)
{
- if (isset($samlAttributes[$propertyKey])) {
- $data = $samlAttributes[$propertyKey];
- if (is_array($data)) {
- if (count($data) == 0) {
+ switch (count($data)) {
+ case 0:
$data = $defaultValue;
- } else if (count($data) == 1) {
+ break;
+ case 1:
$data = $data[0];
- }
- }
- } else {
- $data = $defaultValue;
+ break;
}
-
return $data;
}
/**
- * Register a user that is authenticated but not
- * already registered.
- * @param array $userDetails
- * @return User
+ * Get a property from an SAML response.
+ * Handles properties potentially being an array.
*/
- protected function registerUser($userDetails)
+ protected function getSamlResponseAttribute(array $samlAttributes, string $propertyKey, $defaultValue)
{
- // Create an array of the user data to create a new user instance
- $userData = [
- 'name' => $userDetails['name'],
- 'email' => $userDetails['email'],
- 'password' => str_random(30),
- 'external_auth_id' => $userDetails['uid'],
- 'email_confirmed' => true,
- ];
+ if (isset($samlAttributes[$propertyKey])) {
+ return $this->simplifyValue($samlAttributes[$propertyKey], $defaultValue);
+ }
- $user = $this->user->forceCreate($userData);
- $this->userRepo->attachDefaultRole($user);
- $this->userRepo->downloadAndAssignUserAvatar($user);
- return $user;
+ return $defaultValue;
}
/**
* Get the user from the database for the specified details.
- * @param array $userDetails
- * @return User|null
+ * @throws SamlException
+ * @throws UserRegistrationException
*/
- protected function getOrRegisterUser($userDetails)
+ protected function getOrRegisterUser(array $userDetails): ?User
{
- $isRegisterEnabled = config('services.saml.auto_register') === true;
- $user = $this->user
- ->where('external_auth_id', $userDetails['uid'])
+ $user = $this->user->newQuery()
+ ->where('external_auth_id', '=', $userDetails['external_id'])
->first();
- if ($user === null && $isRegisterEnabled) {
- $user = $this->registerUser($userDetails);
+ if (is_null($user)) {
+ $userData = [
+ 'name' => $userDetails['name'],
+ 'email' => $userDetails['email'],
+ 'password' => Str::random(32),
+ 'external_auth_id' => $userDetails['external_id'],
+ ];
+
+ $user = $this->registrationService->registerUser($userData, null, false);
}
return $user;
}
/**
- * Process the SAML response for a user. Login the user when
- * they exist, optionally registering them automatically.
- * @param string $samlID
- * @param array $samlAttributes
+ * Process the SAML response for a user. Login the user when
+ * they exist, optionally registering them automatically.
+ * @throws SamlException
+ * @throws JsonDebugException
+ * @throws UserRegistrationException
*/
- public function processLoginCallback($samlID, $samlAttributes)
+ public function processLoginCallback(string $samlID, array $samlAttributes): User
{
$userDetails = $this->getUserDetails($samlID, $samlAttributes);
$isLoggedIn = auth()->check();
+ if ($this->config['dump_user_details']) {
+ throw new JsonDebugException([
+ 'id_from_idp' => $samlID,
+ 'attrs_from_idp' => $samlAttributes,
+ 'attrs_after_parsing' => $userDetails,
+ ]);
+ }
+
+ if ($userDetails['email'] === null) {
+ throw new SamlException(trans('errors.saml_no_email_address'));
+ }
+
if ($isLoggedIn) {
- logger()->error("Already logged in");
- } else {
- $user = $this->getOrRegisterUser($userDetails);
- if ($user === null) {
- logger()->error("User does not exist");
- } else {
- auth()->login($user);
- }
+ throw new SamlException(trans('errors.saml_already_logged_in'), '/login');
+ }
+
+ $user = $this->getOrRegisterUser($userDetails);
+ if ($user === null) {
+ throw new SamlException(trans('errors.saml_user_not_registered', ['name' => $userDetails['external_id']]), '/login');
+ }
+
+ if ($this->shouldSyncGroups()) {
+ $groups = $this->getUserGroups($samlAttributes);
+ $this->syncWithGroups($user, $groups);
}
+ auth()->login($user);
return $user;
}
}
projects / bookstack / blobdiff