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<?php
IndieAuth\Client::$clientID = Config::$base_url;
IndieAuth\Client::$redirectURL = Config::$base_url.'auth/callback';
$app->get('/auth/start', function() use($app) {
$req = $app->request();
$params = $req->params();
$defaultScope = 'create update media profile';
list($authorizationURL, $error) = IndieAuth\Client::begin($params['me'], $defaultScope);
$me = IndieAuth\Client::normalizeMeURL($params['me']);
// Double check for a micropub endpoint here for debugging purposes
if(!$error) {
$micropubEndpoint = $_SESSION['indieauth']['micropub_endpoint'] = IndieAuth\Client::discoverMicropubEndpoint($me);
if(!$micropubEndpoint) {
$error['error'] = 'missing_micropub_endpoint';
}
}
if($error && in_array($error['error'], ['missing_authorization_endpoint','missing_token_endpoint','missing_micropub_endpoint'])) {
// Display debug info for these particular errors
$micropubEndpoint = $_SESSION['indieauth']['micropub_endpoint'] = IndieAuth\Client::discoverMicropubEndpoint($me);
$tokenEndpoint = $_SESSION['indieauth']['token_endpoint'] = IndieAuth\Client::discoverTokenEndpoint($me);
$authorizationEndpoint = $_SESSION['indieauth']['authorization_endpoint'] = IndieAuth\Client::discoverAuthorizationEndpoint($me);
$html = render('auth_start', array(
'title' => 'Sign In',
'me' => $me,
'authorizing' => $me,
'meParts' => parse_url($me),
'tokenEndpoint' => $tokenEndpoint,
'micropubEndpoint' => $micropubEndpoint,
'authorizationEndpoint' => $authorizationEndpoint,
'authorizationURL' => false
));
$app->response()->body($html);
return;
}
// Handle other errors like connection errors by showing a generic error page
if($error) {
$html = render('auth_error', array(
'title' => 'Sign In',
'error' => $error['error'],
'errorDescription' => $error['error_description'],
));
$app->response()->body($html);
return;
}
$micropubEndpoint = $_SESSION['indieauth']['micropub_endpoint'] = IndieAuth\Client::discoverMicropubEndpoint($me);
$tokenEndpoint = $_SESSION['indieauth']['token_endpoint'] = IndieAuth\Client::discoverTokenEndpoint($me);
$authorizationEndpoint = $_SESSION['indieauth']['authorization_endpoint'] = IndieAuth\Client::discoverAuthorizationEndpoint($me);
if(k($params, 'redirect')) {
$_SESSION['redirect_after_login'] = $params['redirect'];
}
if(k($params, 'reply')) {
$_SESSION['reply'] = $params['reply'];
}
// If the user has already signed in before and has a micropub access token,
// and the endpoints are all the same, skip the debugging screens and redirect
// immediately to the auth endpoint.
// This will still get a new access token when they finish logging in.
$user = ORM::for_table('users')->where('url', $me)->find_one();
if($user && $user->micropub_access_token
&& $user->micropub_endpoint == $micropubEndpoint
&& $user->token_endpoint == $tokenEndpoint
&& $user->authorization_endpoint == $authorizationEndpoint
&& !array_key_exists('restart', $params)) {
// Request whatever scope was previously granted
$authorizationURL = parse_url($authorizationURL);
$authorizationURL['scope'] = $user->micropub_scope;
$authorizationURL = http_build_url($authorizationURL);
$app->redirect($authorizationURL, 302);
} else {
if(k($params, 'dontask') && $params['dontask']) {
// Request whatever scope was previously granted
$authorizationURL = parse_url($authorizationURL);
$authorizationURL['scope'] = $user->micropub_scope ?: $defaultScope;
$authorizationURL = http_build_url($authorizationURL);
$_SESSION['dontask'] = 1;
$app->redirect($authorizationURL, 302);
}
$html = render('auth_start', array(
'title' => 'Sign In',
'me' => $me,
'authorizing' => $me,
'meParts' => parse_url($me),
'tokenEndpoint' => $tokenEndpoint,
'micropubEndpoint' => $micropubEndpoint,
'authorizationEndpoint' => $authorizationEndpoint,
'authorizationURL' => $authorizationURL
));
$app->response()->body($html);
}
});
$app->get('/auth/redirect', function() use($app) {
$req = $app->request();
$params = $req->params();
// Override scope from the form the user selects
if(!isset($params['scope']))
$params['scope'] = '';
$authorizationURL = parse_url($params['authorization_url']);
parse_str($authorizationURL['query'], $query);
$query['scope'] = $params['scope'];
$authorizationURL['query'] = http_build_query($query);
$authorizationURL = http_build_url($authorizationURL);
$app->redirect($authorizationURL);
return;
});
$app->get('/auth/callback', function() use($app) {
$req = $app->request();
$params = $req->params();
list($token, $error) = IndieAuth\Client::complete($params, true);
if($error) {
$html = render('auth_error', [
'title' => 'Auth Callback',
'error' => $error['error'],
'errorDescription' => $error['error_description'],
]);
$app->response()->body($html);
return;
}
$me = $token['me'];
// Use the discovered endpoints saved in the session
$micropubEndpoint = $_SESSION['indieauth']['micropub_endpoint'];
$tokenEndpoint = $_SESSION['indieauth']['token_endpoint'];
$redirectToDashboardImmediately = false;
// If a valid access token was returned, store the token info in the session and they are signed in
if(k($token['response'], array('me','access_token','scope'))) {
$_SESSION['auth'] = $token['response'];
$_SESSION['me'] = $me = $token['me'];
$user = ORM::for_table('users')->where('url', $me)->find_one();
if($user) {
// Already logged in, update the last login date
$user->last_login = date('Y-m-d H:i:s');
// If they have logged in before and we already have an access token, then redirect to the dashboard now
if($user->micropub_access_token)
$redirectToDashboardImmediately = true;
} else {
// New user! Store the user in the database
$user = ORM::for_table('users')->create();
$user->url = $me;
$user->date_created = date('Y-m-d H:i:s');
}
$user->authorization_endpoint = $_SESSION['indieauth']['authorization_endpoint'];
$user->token_endpoint = $tokenEndpoint;
$user->micropub_endpoint = $micropubEndpoint;
$user->micropub_access_token = $token['response']['access_token'];
$user->micropub_scope = $token['response']['scope'];
$user->micropub_response = $token['raw_response'];
$user->save();
$_SESSION['user_id'] = $user->id();
// Make a request to the micropub endpoint to discover the syndication targets and media endpoint if any.
// Errors are silently ignored here. The user will be able to retry from the new post interface and get feedback.
get_micropub_config($user, ['q'=>'config']);
}
unset($_SESSION['indieauth']);
if($redirectToDashboardImmediately || k($_SESSION, 'dontask')) {
unset($_SESSION['dontask']);
if(k($_SESSION, 'redirect_after_login')) {
$dest = $_SESSION['redirect_after_login'];
unset($_SESSION['redirect_after_login']);
$app->redirect($dest, 302);
} else {
$query = [];
if(k($_SESSION, 'reply')) {
$query['reply'] = $_SESSION['reply'];
unset($_SESSION['reply']);
}
$app->redirect('/new?' . http_build_query($query), 302);
}
} else {
$html = render('auth_callback', array(
'title' => 'Sign In',
'me' => $me,
'authorizing' => $me,
'meParts' => parse_url($me),
'tokenEndpoint' => $tokenEndpoint,
'auth' => $token['response'],
'response' => $token['raw_response'],
'curl_error' => (array_key_exists('error', $token) ? $token['error'] : false),
'destination' => (k($_SESSION, 'redirect_after_login') ?: '/new')
));
$app->response()->body($html);
}
});
$app->get('/signout', function() use($app) {
unset($_SESSION['auth']);
unset($_SESSION['me']);
unset($_SESSION['auth_state']);
unset($_SESSION['user_id']);
$app->redirect('/', 302);
});
$app->post('/auth/reset', function() use($app) {
if($user=require_login($app, false)) {
revoke_micropub_token($user->micropub_access_token, $user->token_endpoint);
$user->authorization_endpoint = '';
$user->token_endpoint = '';
$user->micropub_endpoint = '';
$user->authorization_endpoint = '';
$user->micropub_media_endpoint = '';
$user->micropub_scope = '';
$user->micropub_access_token = '';
$user->syndication_targets = '';
$user->supported_post_types = '';
$user->save();
unset($_SESSION['auth']);
unset($_SESSION['me']);
unset($_SESSION['auth_state']);
unset($_SESSION['user_id']);
}
$app->redirect('/', 302);
});
|
