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authorAaron Parecki <aaron@parecki.com>2014-05-24 14:41:21 -0700
committerAaron Parecki <aaron@parecki.com>2014-05-24 14:41:21 -0700
commit3f82ec2f757c62c25a31b461e0a0cddc14886117 (patch)
tree8eb85c7f356df87f2bf477a54c7ab521002492a1 /controllers
Working app! Copied signin logic from OwnYourGram. New "post" interface for writing a simple text post. Also supports browser geolocation.
Diffstat (limited to 'controllers')
-rw-r--r--controllers/auth.php268
-rw-r--r--controllers/controllers.php83
2 files changed, 351 insertions, 0 deletions
diff --git a/controllers/auth.php b/controllers/auth.php
new file mode 100644
index 0000000..208f0f8
--- /dev/null
+++ b/controllers/auth.php
@@ -0,0 +1,268 @@
+<?php
+
+function buildRedirectURI() {
+ return 'http://' . $_SERVER['SERVER_NAME'] . '/auth/callback';
+}
+
+function clientID() {
+ return 'https://indiepost.micropub.net';
+}
+
+function build_url($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$fragment";
+}
+
+// Input: Any URL or string like "aaronparecki.com"
+// Output: Normlized URL (default to http if no scheme, force "/" path)
+// or return false if not a valid URL (has query string params, etc)
+function normalizeMeURL($url) {
+ $me = parse_url($url);
+
+ // parse_url returns just "path" for naked domains
+ if(count($me) == 1 && array_key_exists('path', $me)) {
+ $me['host'] = $me['path'];
+ unset($me['path']);
+ }
+
+ if(!array_key_exists('scheme', $me))
+ $me['scheme'] = 'http';
+
+ if(!array_key_exists('path', $me))
+ $me['path'] = '/';
+
+ // Invalid scheme
+ if(!in_array($me['scheme'], array('http','https')))
+ return false;
+
+ // Invalid path
+ if($me['path'] != '/')
+ return false;
+
+ // query and fragment not allowed
+ if(array_key_exists('query', $me) || array_key_exists('fragment', $me))
+ return false;
+
+ return build_url($me);
+}
+
+$app->get('/', function($format='html') use($app) {
+ $res = $app->response();
+
+
+ ob_start();
+ render('index', array(
+ 'title' => 'OwnYourGram',
+ 'meta' => ''
+ ));
+ $html = ob_get_clean();
+ $res->body($html);
+});
+
+$app->get('/signin', function() use($app) {
+ $html = render('signin', array('title' => 'Sign In'));
+ $app->response()->body($html);
+});
+
+$app->get('/auth/start', function() use($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 = normalizeMeURL($params['me']))) {
+ $html = render('auth_error', array(
+ 'title' => 'Sign In',
+ 'error' => 'Invalid "me" Parameter',
+ 'errorDescription' => 'The ID you entered, <strong>' . $params['me'] . '</strong> is not valid.'
+ ));
+ $app->response()->body($html);
+ return;
+ }
+
+ $authorizationEndpoint = IndieAuth\Client::discoverAuthorizationEndpoint($me);
+ $tokenEndpoint = IndieAuth\Client::discoverTokenEndpoint($me);
+ $micropubEndpoint = IndieAuth\Client::discoverMicropubEndpoint($me);
+
+ if($tokenEndpoint && $micropubEndpoint && $authorizationEndpoint) {
+ // Generate a "state" parameter for the request
+ $state = IndieAuth\Client::generateStateParameter();
+ $_SESSION['auth_state'] = $state;
+
+ $scope = 'post';
+ $authorizationURL = IndieAuth\Client::buildAuthorizationURL($authorizationEndpoint, $me, buildRedirectURI(), clientID(), $state, $scope);
+ } else {
+ $authorizationURL = false;
+ }
+
+ // 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', $me)->find_one();
+ if($user && $user->micropub_access_token && !array_key_exists('restart', $params)) {
+
+ $user->micropub_endpoint = $micropubEndpoint;
+ $user->authorization_endpoint = $authorizationEndpoint;
+ $user->token_endpoint = $tokenEndpoint;
+ $user->save();
+
+ $app->redirect($authorizationURL, 301);
+
+ } else {
+
+ if(!$user)
+ $user = ORM::for_table('users')->create();
+ $user->url = $me;
+ $user->date_created = date('Y-m-d H:i:s');
+ $user->micropub_endpoint = $micropubEndpoint;
+ $user->authorization_endpoint = $authorizationEndpoint;
+ $user->token_endpoint = $tokenEndpoint;
+ $user->save();
+
+ $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);
+ }
+});
+
+$app->get('/auth/callback', function() use($app) {
+ $req = $app->request();
+ $params = $req->params();
+
+ // Double check there is a "me" parameter
+ // Should only fail for really hacked up requests
+ if(!array_key_exists('me', $params) || !($me = normalizeMeURL($params['me']))) {
+ $html = render('auth_error', array(
+ 'title' => 'Auth Callback',
+ 'error' => 'Invalid "me" Parameter',
+ 'errorDescription' => 'The ID you entered, <strong>' . $params['me'] . '</strong> is not valid.'
+ ));
+ $app->response()->body($html);
+ return;
+ }
+
+ // If there is no state in the session, start the login again
+ if(!array_key_exists('auth_state', $_SESSION)) {
+ $app->redirect('/auth/start?me='.urlencode($params['me']));
+ return;
+ }
+
+ if(!array_key_exists('code', $params) || trim($params['code']) == '') {
+ $html = render('auth_error', array(
+ 'title' => 'Auth Callback',
+ 'error' => 'Missing authorization code',
+ 'errorDescription' => 'No authorization code was provided in the request.'
+ ));
+ $app->response()->body($html);
+ 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)) {
+ $html = 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.'
+ ));
+ $app->response()->body($html);
+ return;
+ }
+
+ if($params['state'] != $_SESSION['auth_state']) {
+ $html = 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.'
+ ));
+ $app->response()->body($html);
+ return;
+ }
+
+ // Now the basic sanity 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.
+
+ // Discover the endpoints
+ $micropubEndpoint = IndieAuth\Client::discoverMicropubEndpoint($me);
+ $tokenEndpoint = IndieAuth\Client::discoverTokenEndpoint($me);
+
+ if($tokenEndpoint) {
+ $token = IndieAuth\Client::getAccessToken($tokenEndpoint, $params['code'], $params['me'], buildRedirectURI(), clientID(), $params['state'], true);
+
+ } else {
+ $token = array('auth'=>false, 'response'=>false);
+ }
+
+ $redirectToDashboardImmediately = false;
+
+ // If a valid access token was returned, store the token info in the session and they are signed in
+ if(k($token['auth'], array('me','access_token','scope'))) {
+ $_SESSION['auth'] = $token['auth'];
+ $_SESSION['me'] = $params['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->micropub_endpoint = $micropubEndpoint;
+ $user->micropub_access_token = $token['auth']['access_token'];
+ $user->micropub_scope = $token['auth']['scope'];
+ $user->micropub_response = $token['response'];
+ $user->save();
+ $_SESSION['user_id'] = $user->id();
+ }
+
+ unset($_SESSION['auth_state']);
+
+ if($redirectToDashboardImmediately) {
+ $app->redirect('/new', 301);
+ } else {
+ $html = 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)
+ ));
+ $app->response()->body($html);
+ }
+});
+
+$app->get('/signout', function() use($app) {
+ unset($_SESSION['auth']);
+ unset($_SESSION['me']);
+ unset($_SESSION['auth_state']);
+ unset($_SESSION['user_id']);
+ $app->redirect('/', 301);
+});
+
diff --git a/controllers/controllers.php b/controllers/controllers.php
new file mode 100644
index 0000000..18879e3
--- /dev/null
+++ b/controllers/controllers.php
@@ -0,0 +1,83 @@
+<?php
+
+function require_login(&$app) {
+ if(!array_key_exists('user_id', $_SESSION)) {
+ $app->redirect('/');
+ return false;
+ } else {
+ return ORM::for_table('users')->find_one($_SESSION['user_id']);
+ }
+}
+
+$app->get('/new', function() use($app) {
+ if($user=require_login($app)) {
+
+ $entry = false;
+ $photo_url = false;
+
+ $test_response = '';
+ if($user->last_micropub_response) {
+ try {
+ if(@json_decode($user->last_micropub_response)) {
+ $d = json_decode($user->last_micropub_response);
+ $test_response = $d->response;
+ }
+ } catch(Exception $e) {
+ }
+ }
+
+ $html = render('dashboard', array(
+ 'title' => 'New Post',
+ 'micropub_endpoint' => $user->micropub_endpoint,
+ 'micropub_scope' => $user->micropub_scope,
+ 'micropub_access_token' => $user->micropub_access_token,
+ 'response_date' => $user->last_micropub_response_date,
+ 'test_response' => $test_response
+ ));
+ $app->response()->body($html);
+ }
+});
+
+$app->get('/creating-a-token-endpoint', function() use($app) {
+ $app->redirect('http://indiewebcamp.com/token-endpoint', 301);
+});
+$app->get('/creating-a-micropub-endpoint', function() use($app) {
+ $html = render('creating-a-micropub-endpoint', array('title' => 'Creating a Micropub Endpoint'));
+ $app->response()->body($html);
+});
+
+$app->get('/docs', function() use($app) {
+ $html = render('docs', array('title' => 'Documentation'));
+ $app->response()->body($html);
+});
+
+$app->post('/micropub/post', function() use($app) {
+ if($user=require_login($app)) {
+ $params = $app->request()->params();
+
+ // Now send to the micropub endpoint
+ $r = micropub_post($user->micropub_endpoint, $params, $user->micropub_access_token);
+ $response = $r['response'];
+
+ $user->last_micropub_response = json_encode($r);
+ $user->last_micropub_response_date = date('Y-m-d H:i:s');
+
+ // Check the response and look for a "Location" header containing the URL
+ if($response && preg_match('/Location: (.+)/', $response, $match)) {
+ $location = $match[1];
+ $user->micropub_success = 1;
+ } else {
+ $location = false;
+ }
+
+ $user->save();
+
+ $app->response()->body(json_encode(array(
+ 'response' => htmlspecialchars($response),
+ 'location' => $location,
+ 'error' => $r['error'],
+ 'curlinfo' => $r['curlinfo']
+ )));
+ }
+});
+