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187 lines
6.1 KiB
187 lines
6.1 KiB
<?php
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namespace App\Http\Controllers;
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use Laravel\Lumen\Routing\Controller as BaseController;
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use Illuminate\Http\Request;
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use GuzzleHttp;
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use DB;
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class IndieAuth extends BaseController
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{
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private function _redirectURI() {
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return env('BASE_URL') . 'auth/callback';
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}
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public function start(Request $request) {
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$me = \IndieAuth\Client::normalizeMeURL($request->input('me'));
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if(!$me) {
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return view('auth/error', ['error' => 'Invalid URL']);
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}
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$state = \IndieAuth\Client::generateStateParameter();
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if(preg_match('/https?:\/\/github\.com\/[^ \/]+/', $me)) {
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$authorizationURL = 'https://github.com/login/oauth/authorize'
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. '?client_id=' . env('GITHUB_ID')
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. '&state=' . $state;
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session([
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'auth_state' => $state,
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'attempted_me' => $me,
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]);
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} else {
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$authorizationEndpoint = \IndieAuth\Client::discoverAuthorizationEndpoint($me);
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$tokenEndpoint = \IndieAuth\Client::discoverTokenEndpoint($me);
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session([
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'auth_state' => $state,
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'attempted_me' => $me,
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'authorization_endpoint' => $authorizationEndpoint,
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'token_endpoint' => $tokenEndpoint
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]);
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// If the user specified only an authorization endpoint, use that
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if(!$authorizationEndpoint) {
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// Otherwise, fall back to indieauth.com
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$authorizationEndpoint = env('DEFAULT_AUTH_ENDPOINT');
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}
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$authorizationURL = \IndieAuth\Client::buildAuthorizationURL($authorizationEndpoint, $me, $this->_redirectURI(), env('BASE_URL'), $state);
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}
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return redirect($authorizationURL);
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}
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public function callback(Request $request) {
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if(!session('auth_state') || !session('attempted_me')) {
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return view('auth/error', ['error' => 'Missing state information. Start over.']);
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}
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if($request->input('error')) {
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return view('auth/error', ['error' => $request->input('error')]);
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}
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if(session('auth_state') != $request->input('state')) {
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return view('auth/error', ['error' => 'State did not match. Start over.']);
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}
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$tokenEndpoint = false;
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if(session('token_endpoint')) {
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$tokenEndpoint = session('token_endpoint');
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} else if(session('authorization_endpoint')) {
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$authorizationEndpoint = session('authorization_endpoint');
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} else {
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$authorizationEndpoint = env('DEFAULT_AUTH_ENDPOINT');
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}
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if($tokenEndpoint) {
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$token = \IndieAuth\Client::getAccessToken($tokenEndpoint, $request->input('code'), session('attempted_me'), $this->_redirectURI(), env('BASE_URL'), $request->input('state'));
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} else {
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$token = \IndieAuth\Client::verifyIndieAuthCode($authorizationEndpoint, $request->input('code'), session('attempted_me'), $this->_redirectURI(), env('BASE_URL'), $request->input('state'));
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}
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if($token && array_key_exists('me', $token)) {
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session()->flush();
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session(['me' => $token['me']]);
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$this->_userLoggedIn($token['me']);
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}
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return redirect('/');
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}
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public function github(Request $request) {
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if(!session('auth_state') || !session('attempted_me')) {
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return view('auth/error', ['error' => 'Missing state information. Start over.']);
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}
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if($request->input('error')) {
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return view('auth/error', ['error' => $request->input('error')]);
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}
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if(session('auth_state') != $request->input('state')) {
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return view('auth/error', ['error' => 'State did not match. Start over.']);
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}
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if(!$request->input('code')) {
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return view('auth/error', ['error' => 'An unknown error occurred']);
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}
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$client = new GuzzleHttp\Client([
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'http_errors' => false
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]);
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$res = $client->post('https://github.com/login/oauth/access_token', [
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'form_params' => [
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'client_id' => env('GITHUB_ID'),
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'client_secret' => env('GITHUB_SECRET'),
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// 'redirect_uri' => env('BASE_URL') . 'auth/github',
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'code' => $request->input('code'),
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'state' => session('auth_state')
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],
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'headers' => [
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'Accept' => 'application/json'
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]
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]);
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if($res->getStatusCode() == 200) {
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$body = $res->getBody();
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$data = json_decode($body);
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if($data) {
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if(property_exists($data, 'access_token')) {
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// Now check the username of the user that just logged in
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$res = $client->get('https://api.github.com/user', [
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'headers' => [
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'Authorization' => 'token ' . $data->access_token
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]
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]);
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if($res->getStatusCode() == 200) {
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$data = json_decode($res->getBody());
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if(property_exists($data, 'login')) {
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session()->flush();
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$me = 'https://github.com/' . $data->login;
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session(['me' => $me]);
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$this->_userLoggedIn($me);
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return redirect('/');
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} else {
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return view('auth/error', ['error' => 'Login failed']);
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}
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} else {
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return view('auth/error', ['error' => 'Login failed']);
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}
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} else {
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$err = '';
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if(property_exists($data, 'error_description')) {
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$err = ': ' . $data->error_description;
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}
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return view('auth/error', ['error' => 'Login failed' . $err]);
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}
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} else {
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return view('auth/error', ['error' => 'Error parsing response body from GitHub']);
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}
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} else {
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return view('auth/error', ['error' => 'Could not verify login from GitHub: ' . $res->getBody()]);
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}
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}
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private function _userLoggedIn($url) {
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// Create the user record if it doesn't exist yet
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$user = DB::select('SELECT *
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FROM users
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WHERE url = ?', [$url]);
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if(count($user)) {
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DB::update('UPDATE users SET last_login = ?', [date('Y-m-d H:i:s')]);
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session(['user_id' => $user[0]->id]);
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} else {
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DB::insert('INSERT INTO users (url, created_at, last_login) VALUES(?,?,?)', [$url, date('Y-m-d H:i:s'), date('Y-m-d H:i:s')]);
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$user = DB::select('SELECT *
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FROM users
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WHERE url = ?', [$url]);
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session(['user_id' => $user[0]->id]);
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}
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}
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public function logout(Request $request) {
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session()->flush();
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return redirect('/');
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}
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}
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