You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
321 lines
11 KiB
321 lines
11 KiB
<?php
|
|
|
|
function buildRedirectURI() {
|
|
return Config::$base_url . 'auth/callback';
|
|
}
|
|
|
|
function clientID() {
|
|
return Config::$base_url;
|
|
}
|
|
|
|
function build_url($parsed_url) {
|
|
$scheme = isset($parsed_url['scheme']) ? $parsed_url['scheme'] . '://' : '';
|
|
$host = isset($parsed_url['host']) ? $parsed_url['host'] : '';
|
|
$port = isset($parsed_url['port']) ? ':' . $parsed_url['port'] : '';
|
|
$user = isset($parsed_url['user']) ? $parsed_url['user'] : '';
|
|
$pass = isset($parsed_url['pass']) ? ':' . $parsed_url['pass'] : '';
|
|
$pass = ($user || $pass) ? "$pass@" : '';
|
|
$path = isset($parsed_url['path']) ? $parsed_url['path'] : '';
|
|
$query = isset($parsed_url['query']) ? '?' . $parsed_url['query'] : '';
|
|
$fragment = isset($parsed_url['fragment']) ? '#' . $parsed_url['fragment'] : '';
|
|
return "$scheme$user$pass$host$port$path$query$fragment";
|
|
}
|
|
|
|
function hostname($url) {
|
|
return parse_url($url, PHP_URL_HOST);
|
|
}
|
|
|
|
function add_hcard_info($user, $hCard) {
|
|
if($user && $hCard) {
|
|
// Update the user's h-card info if present
|
|
if(BarnabyWalters\Mf2\hasProp($hCard, 'name'))
|
|
$user->name = BarnabyWalters\Mf2\getPlaintext($hCard, 'name');
|
|
if(BarnabyWalters\Mf2\hasProp($hCard, 'photo'))
|
|
$user->photo_url = BarnabyWalters\Mf2\getPlaintext($hCard, 'photo');
|
|
}
|
|
}
|
|
|
|
$app->get('/', function($format='html') use($app) {
|
|
$res = $app->response();
|
|
|
|
|
|
render('index', array(
|
|
'title' => 'Teacup',
|
|
'meta' => ''
|
|
));
|
|
});
|
|
|
|
$app->get('/auth/start', function() use($app) {
|
|
$req = $app->request();
|
|
|
|
$params = $req->params();
|
|
|
|
// the "me" parameter is user input, and may be in a couple of different forms:
|
|
// aaronparecki.com http://aaronparecki.com http://aaronparecki.com/
|
|
// Normlize the value now (move this into a function in IndieAuth\Client later)
|
|
if(!array_key_exists('me', $params) || !($me = IndieAuth\Client::normalizeMeURL($params['me']))) {
|
|
render('auth_error', array(
|
|
'title' => 'Sign In',
|
|
'error' => 'Invalid "me" Parameter',
|
|
'errorDescription' => 'The URL you entered, "<strong>' . $params['me'] . '</strong>" is not valid.'
|
|
));
|
|
return;
|
|
}
|
|
|
|
$_SESSION['attempted_me'] = $me;
|
|
|
|
$authorizationEndpoint = IndieAuth\Client::discoverAuthorizationEndpoint($me);
|
|
$tokenEndpoint = IndieAuth\Client::discoverTokenEndpoint($me);
|
|
$micropubEndpoint = IndieAuth\Client::discoverMicropubEndpoint($me);
|
|
$hCard = IndieAuth\Client::representativeHCard($me);
|
|
|
|
// Generate a "state" parameter for the request
|
|
$state = IndieAuth\Client::generateStateParameter();
|
|
$_SESSION['auth_state'] = $state;
|
|
|
|
$_SESSION['redirect_after_login'] = '/new';
|
|
|
|
if($tokenEndpoint && $micropubEndpoint && $authorizationEndpoint) {
|
|
$scope = 'create media';
|
|
$authorizationURL = IndieAuth\Client::buildAuthorizationURL($authorizationEndpoint, [
|
|
'me' => $me,
|
|
'redirect_uri' => buildRedirectURI(),
|
|
'client_id' => clientID(),
|
|
'state' => $state,
|
|
'scope' => $scope
|
|
]);
|
|
$_SESSION['authorization_endpoint'] = $authorizationEndpoint;
|
|
$_SESSION['micropub_endpoint'] = $micropubEndpoint;
|
|
$_SESSION['token_endpoint'] = $tokenEndpoint;
|
|
} else {
|
|
$authorizationURL = IndieAuth\Client::buildAuthorizationURL('https://indielogin.com/auth', [
|
|
'me' => $me,
|
|
'redirect_uri' => buildRedirectURI(),
|
|
'client_id' => clientID(),
|
|
'state' => $state
|
|
]);
|
|
}
|
|
|
|
// If the user has already signed in before and has a micropub access token, skip
|
|
// the debugging screens and redirect immediately to the auth endpoint.
|
|
// This will still generate a new access token when they finish logging in.
|
|
$user = ORM::for_table('users')->where('url', hostname($me))->find_one();
|
|
|
|
if($user && $user->access_token && !array_key_exists('restart', $params)) {
|
|
|
|
add_hcard_info($user, $hCard);
|
|
$user->micropub_endpoint = $micropubEndpoint;
|
|
$user->authorization_endpoint = $authorizationEndpoint;
|
|
$user->token_endpoint = $tokenEndpoint;
|
|
$user->type = $micropubEndpoint ? 'micropub' : 'local';
|
|
$user->save();
|
|
|
|
$app->redirect($authorizationURL, 301);
|
|
|
|
} else {
|
|
|
|
if(!$user)
|
|
$user = ORM::for_table('users')->create();
|
|
add_hcard_info($user, $hCard);
|
|
$user->url = hostname($me);
|
|
$user->date_created = date('Y-m-d H:i:s');
|
|
$user->micropub_endpoint = $micropubEndpoint;
|
|
$user->authorization_endpoint = $authorizationEndpoint;
|
|
$user->token_endpoint = $tokenEndpoint;
|
|
$user->type = $micropubEndpoint ? 'micropub' : 'local';
|
|
$user->save();
|
|
|
|
render('auth_start', array(
|
|
'title' => 'Sign In',
|
|
'me' => $me,
|
|
'authorizing' => $me,
|
|
'meParts' => parse_url($me),
|
|
'micropubUser' => $authorizationEndpoint && $tokenEndpoint && $micropubEndpoint,
|
|
'tokenEndpoint' => $tokenEndpoint,
|
|
'micropubEndpoint' => $micropubEndpoint,
|
|
'authorizationEndpoint' => $authorizationEndpoint,
|
|
'authorizationURL' => $authorizationURL
|
|
));
|
|
}
|
|
});
|
|
|
|
$app->get('/auth/callback', function() use($app) {
|
|
$req = $app->request();
|
|
$params = $req->params();
|
|
|
|
// If there is no state in the session, start the login again
|
|
if(!array_key_exists('auth_state', $_SESSION)) {
|
|
render('auth_error', array(
|
|
'title' => 'Auth Callback',
|
|
'error' => 'Missing session state',
|
|
'errorDescription' => 'Something went wrong, please try signing in again, and make sure cookies are enabled for this domain.'
|
|
));
|
|
return;
|
|
}
|
|
|
|
if(!array_key_exists('code', $params) || trim($params['code']) == '') {
|
|
render('auth_error', array(
|
|
'title' => 'Auth Callback',
|
|
'error' => 'Missing authorization code',
|
|
'errorDescription' => 'No authorization code was provided in the request.'
|
|
));
|
|
return;
|
|
}
|
|
|
|
// Verify the state came back and matches what we set in the session
|
|
// Should only fail for malicious attempts, ok to show a not as nice error message
|
|
if(!array_key_exists('state', $params)) {
|
|
render('auth_error', array(
|
|
'title' => 'Auth Callback',
|
|
'error' => 'Missing state parameter',
|
|
'errorDescription' => 'No state parameter was provided in the request. This shouldn\'t happen. It is possible this is a malicious authorization attempt, or your authorization server failed to pass back the "state" parameter.'
|
|
));
|
|
return;
|
|
}
|
|
|
|
if($params['state'] != $_SESSION['auth_state']) {
|
|
render('auth_error', array(
|
|
'title' => 'Auth Callback',
|
|
'error' => 'Invalid state',
|
|
'errorDescription' => 'The state parameter provided did not match the state provided at the start of authorization. This is most likely caused by a malicious authorization attempt.'
|
|
));
|
|
return;
|
|
}
|
|
|
|
if(!isset($_SESSION['attempted_me'])) {
|
|
render('auth_error', [
|
|
'title' => 'Auth Callback',
|
|
'error' => 'Missing data',
|
|
'errorDescription' => 'We forgot who was logging in. It\'s possible you took too long to finish signing in, or something got mixed up by signing in in another tab.'
|
|
]);
|
|
return;
|
|
}
|
|
$me = $_SESSION['attempted_me'];
|
|
|
|
// Now the basic checks have passed. Time to start providing more helpful messages when there is an error.
|
|
// An authorization code is in the query string, and we want to exchange that for an access token at the token endpoint.
|
|
|
|
$authorizationEndpoint = isset($_SESSION['authorization_endpoint']) ? $_SESSION['authorization_endpoint'] : false;
|
|
$tokenEndpoint = isset($_SESSION['token_endpoint']) ? $_SESSION['token_endpoint'] : false;
|
|
$micropubEndpoint = isset($_SESSION['micropub_endpoint']) ? $_SESSION['micropub_endpoint'] : false;
|
|
|
|
unset($_SESSION['authorization_endpoint']);
|
|
unset($_SESSION['token_endpoint']);
|
|
unset($_SESSION['micropub_endpoint']);
|
|
|
|
$skipDebugScreen = false;
|
|
|
|
if($tokenEndpoint) {
|
|
// Exchange auth code for an access token
|
|
$token = IndieAuth\Client::exchangeAuthorizationCode($tokenEndpoint, [
|
|
'code' => $params['code'],
|
|
'redirect_uri' => buildRedirectURI(),
|
|
'client_id' => clientID()
|
|
]);
|
|
|
|
// If a valid access token was returned, store the token info in the session and they are signed in
|
|
if(k($token['response'], array('me','access_token','scope'))) {
|
|
|
|
// Verify the authorization endpoint matches
|
|
if($token['response']['me'] != $me) {
|
|
$newAuthorizationEndpoint = IndieAuth\Client::discoverAuthorizationEndpoint($token['response']['me']);
|
|
if($newAuthorizationEndpoint != $authorizationEndpoint) {
|
|
render('auth_error', [
|
|
'title' => 'Error Signing In',
|
|
'error' => 'Invalid authorization endpoint',
|
|
'errorDescription' => 'The authorization endpoint for the returned profile URL did not match the authorization endpoint used to begin the login.'
|
|
]);
|
|
return;
|
|
}
|
|
}
|
|
|
|
$_SESSION['auth'] = $token['response'];
|
|
$_SESSION['me'] = $me = $token['response']['me'];
|
|
}
|
|
|
|
} else {
|
|
// No token endpoint was discovered, instead, verify the auth code at the auth server or with indieauth.com
|
|
|
|
// Never show the intermediate login confirmation page if we just authenticated them instead of got authorization
|
|
$skipDebugScreen = true;
|
|
|
|
if(!$authorizationEndpoint) {
|
|
$authorizationEndpoint = 'https://indielogin.com/auth';
|
|
}
|
|
|
|
$token = IndieAuth\Client::exchangeAuthorizationCode($authorizationEndpoint, [
|
|
'code' => $params['code'],
|
|
'redirect_uri' => buildRedirectURI(),
|
|
'client_id' => clientID()
|
|
]);
|
|
|
|
if(k($token['response'], 'me')) {
|
|
$_SESSION['auth'] = $token['response'];
|
|
$_SESSION['me'] = $me = $token['response']['me'];
|
|
}
|
|
}
|
|
|
|
// Verify the login actually succeeded
|
|
if(!k($token['response'], 'me')) {
|
|
render('auth_error', array(
|
|
'title' => 'Sign-In Failed',
|
|
'error' => 'Unable to verify the sign-in attempt',
|
|
'errorDescription' => ''
|
|
));
|
|
return;
|
|
}
|
|
|
|
$user = ORM::for_table('users')->where('url', hostname($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->access_token)
|
|
$skipDebugScreen = true;
|
|
} else {
|
|
// New user! Store the user in the database
|
|
$user = ORM::for_table('users')->create();
|
|
$user->url = hostname($me);
|
|
$user->date_created = date('Y-m-d H:i:s');
|
|
$user->last_login = date('Y-m-d H:i:s');
|
|
}
|
|
$user->micropub_endpoint = $micropubEndpoint;
|
|
$user->access_token = $token['response']['access_token'];
|
|
$user->token_scope = $token['response']['scope'];
|
|
$user->token_response = $token['raw_response'];
|
|
$user->save();
|
|
$_SESSION['user_id'] = $user->id();
|
|
|
|
|
|
if($tokenEndpoint) {
|
|
// Make a request to the micropub endpoint to discover the media endpoint if set.
|
|
get_micropub_config($user);
|
|
}
|
|
|
|
unset($_SESSION['auth_state']);
|
|
|
|
if($skipDebugScreen) {
|
|
$app->redirect($_SESSION['redirect_after_login'], 301);
|
|
} else {
|
|
render('auth_callback', array(
|
|
'title' => 'Sign In',
|
|
'me' => $me,
|
|
'authorizing' => $me,
|
|
'meParts' => parse_url($me),
|
|
'tokenEndpoint' => $tokenEndpoint,
|
|
'auth' => $token['auth'],
|
|
'response' => $token['response'],
|
|
'curl_error' => (array_key_exists('error', $token) ? $token['error'] : false),
|
|
'redirect' => $_SESSION['redirect_after_login']
|
|
));
|
|
}
|
|
});
|
|
|
|
$app->get('/signout', function() use($app) {
|
|
unset($_SESSION['auth']);
|
|
unset($_SESSION['me']);
|
|
unset($_SESSION['auth_state']);
|
|
unset($_SESSION['user_id']);
|
|
$app->redirect('/', 301);
|
|
});
|
|
|