57 lines
1.9 KiB
Dart
57 lines
1.9 KiB
Dart
import 'dart:io';
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import 'dart:math';
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import 'package:angel_framework/angel_framework.dart';
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import 'package:angel_framework/http.dart';
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import 'package:angel_security/angel_security.dart';
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import 'package:http_parser/http_parser.dart';
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import 'package:logging/logging.dart';
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import 'package:pretty_logging/pretty_logging.dart';
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main() async {
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// Logging boilerplate.
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Logger.root.onRecord.listen(prettyLog);
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// Create an app, and HTTP driver.
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var app = Angel(logger: Logger('cookie_signer')), http = AngelHttp(app);
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// Create a cookie signer. Uses an SHA256 Hmac by default.
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var signer = CookieSigner.fromStringKey(
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'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789ab');
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// When a user visits /getid, give them a (signed) uniqid cookie.
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// When they visit /cookies, print their verified cookies.
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var rnd = Random.secure();
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// Endpoint to give a signed cookie.
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app.get('/getid', (req, res) {
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// Write the uniqid cookie.
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var uniqid = rnd.nextInt(65536);
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signer.writeCookie(res, Cookie('uniqid', uniqid.toString()));
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// Send a response.
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res.write('uniqid=$uniqid');
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});
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// Endpoint to dump all verified cookies.
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//
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// The [onInvalidCookie] callback is optional, but
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// here we will use it to log invalid cookies.
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app.get('/cookies', (req, res) {
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var verifiedCookies = signer.readCookies(req, onInvalidCookie: (cookie) {
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app.logger.warning('Invalid cookie: $cookie');
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});
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res.writeln('${verifiedCookies.length} verified cookie(s)');
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res.writeln('${req.cookies.length} total unverified cookie(s)');
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for (var cookie in verifiedCookies) {
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res.writeln('${cookie.name}=${cookie.value}');
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}
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});
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// 404 otherwise.
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app.fallback((req, res) => throw AngelHttpException.notFound(
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message: 'The only valid endpoints are /getid and /cookies.'));
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// Start the server.
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await http.startServer('127.0.0.1', 3000);
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print('Cookie signer example listening at ${http.uri}');
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}
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