import tor package
This commit is contained in:
Fabian Freund
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// SPDX-FileCopyrightText: 2023 Foundation Devices Inc.
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// SPDX-FileCopyrightText: 2024 Foundation Devices Inc.
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//
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// SPDX-License-Identifier: MIT
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// Flutter dependencies not necessarily needed for tor usage:
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import 'dart:async';
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import 'dart:convert';
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import 'dart:io';
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import 'package:flutter/material.dart';
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// Example application dependencies you can replace with any that works for you:
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import 'package:socks5_proxy/socks_client.dart';
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import 'package:tor/socks_socket.dart';
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// The only real import needed for basic usage:
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import 'package:tor/tor.dart'; // This would go at the top, but dart autoformatter doesn't like it there.
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void main() {
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runApp(const MyApp());
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}
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class MyApp extends StatelessWidget {
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const MyApp({super.key});
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@override
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Widget build(BuildContext context) {
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return const MaterialApp(
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home: Home(),
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);
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}
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}
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class Home extends StatefulWidget {
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const Home({super.key});
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@override
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State<Home> createState() => _MyAppState();
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}
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class _MyAppState extends State<Home> {
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// Flag to track if tor has started.
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bool torStarted = false;
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// Set the default text for the host input field.
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final hostController = TextEditingController(text: 'https://icanhazip.com/');
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// https://check.torproject.org is another good option.
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// Set the default text for the onion input field.
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final onionController = TextEditingController(
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text:
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'https://cflarexljc3rw355ysrkrzwapozws6nre6xsy3n4yrj7taye3uiby3ad.onion');
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// See https://blog.cloudflare.com/cloudflare-onion-service/ for more options:
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// cflarexljc3rw355ysrkrzwapozws6nre6xsy3n4yrj7taye3uiby3ad.onion
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// cflarenuttlfuyn7imozr4atzvfbiw3ezgbdjdldmdx7srterayaozid.onion
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// cflares35lvdlczhy3r6qbza5jjxbcplzvdveabhf7bsp7y4nzmn67yd.onion
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// cflareusni3s7vwhq2f7gc4opsik7aa4t2ajedhzr42ez6uajaywh3qd.onion
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// cflareki4v3lh674hq55k3n7xd4ibkwx3pnw67rr3gkpsonjmxbktxyd.onion
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// cflarejlah424meosswvaeqzb54rtdetr4xva6mq2bm2hfcx5isaglid.onion
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// cflaresuje2rb7w2u3w43pn4luxdi6o7oatv6r2zrfb5xvsugj35d2qd.onion
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// cflareer7qekzp3zeyqvcfktxfrmncse4ilc7trbf6bp6yzdabxuload.onion
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// cflareub6dtu7nvs3kqmoigcjdwap2azrkx5zohb2yk7gqjkwoyotwqd.onion
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// cflare2nge4h4yqr3574crrd7k66lil3torzbisz6uciyuzqc2h2ykyd.onion
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final bitcoinOnionController = TextEditingController(
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text:
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'qly7g5n5t3f3h23xvbp44vs6vpmayurno4basuu5rcvrupli7y2jmgid.onion:50001');
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// For more options, see https://bitnodes.io/nodes/addresses/?q=onion and
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// https://sethforprivacy.com/about/
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final moneroOnionController = TextEditingController(
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text:
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'ucdouiihzwvb5edg3ezeufcs4yp26gq4x64n6b4kuffb7s7jxynnk7qd.onion:18081/json_rpc');
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Future<void> startTor() async {
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await Tor.init();
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// Start the proxy
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await Tor.instance.start();
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// Toggle started flag.
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setState(() {
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torStarted = Tor.instance.started; // Update flag
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});
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print('Done awaiting; tor should be running');
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}
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@override
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void dispose() {
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// Clean up the controller when the widget is disposed.
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hostController.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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const spacerSmall = SizedBox(height: 10);
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return Scaffold(
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appBar: AppBar(
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title: const Text('Tor example'),
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),
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body: SingleChildScrollView(
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child: Container(
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padding: const EdgeInsets.all(10),
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child: Column(
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children: [
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Row(
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children: [
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TextButton(
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onPressed: torStarted
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? null
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: () async {
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unawaited(
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showDialog(
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barrierDismissible: false,
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context: context,
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builder: (_) => const Dialog(
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child: Padding(
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padding: EdgeInsets.all(20.0),
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child: Text("Starting tor..."),
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),
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),
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),
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);
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final time = DateTime.now();
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print("NOW: $time");
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await startTor();
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print("Starting tor took "
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"${DateTime.now().difference(time).inSeconds} "
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"seconds. Proxy running on port ${Tor.instance.port}");
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if (mounted) {
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Navigator.of(context).pop();
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}
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},
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child: const Text("Start"),
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),
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TextButton(
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onPressed: !torStarted
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? null
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: () async {
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Tor.instance.stop();
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setState(() {
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torStarted = false; // Update flag
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});
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},
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child: const Text("Stop"),
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),
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],
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),
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Row(
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children: [
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// Host input field.
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Expanded(
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child: TextField(
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controller: hostController,
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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hintText: 'Host to request',
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),
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),
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),
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spacerSmall,
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TextButton(
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onPressed: torStarted
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? () async {
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// `socks5_proxy` package example, use another socks5
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// connection of your choice.
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// Create HttpClient object
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final client = HttpClient();
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// Assign connection factory.
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SocksTCPClient.assignToHttpClient(client, [
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ProxySettings(InternetAddress.loopbackIPv4,
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Tor.instance.port,
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password:
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null), // TODO Need to get from tor config file.
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]);
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// GET request.
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final url = Uri.parse(hostController.text);
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final request = await client.getUrl(url);
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final response = await request.close();
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// Print response.
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var responseString =
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await utf8.decodeStream(response);
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print(responseString);
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// If host input left to default icanhazip.com, a Tor
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// exit node IP should be printed to the console.
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//
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// https://check.torproject.org is also good for
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// doublechecking torability.
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// Close client
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client.close();
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}
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: null,
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child: const Text("Make proxied request"),
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),
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],
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),
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spacerSmall,
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TextButton(
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onPressed: torStarted
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? () async {
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// Instantiate a socks socket at localhost and on the port selected by the tor service.
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var socksSocket = await SOCKSSocket.create(
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proxyHost: InternetAddress.loopbackIPv4.address,
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proxyPort: Tor.instance.port,
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sslEnabled: true, // For SSL connections.
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);
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// Connect to the socks instantiated above.
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await socksSocket.connect();
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// Connect to bitcoin.stackwallet.com on port 50002 via socks socket.
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//
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// Note that this is an SSL example.
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await socksSocket.connectTo(
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'bitcoin.stackwallet.com', 50002);
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// Send a server features command to the connected socket, see method for more specific usage example..
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await socksSocket.sendServerFeaturesCommand();
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// You should see a server response printed to the console.
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//
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// Example response:
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// `flutter: secure responseData: {
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// "id": "0",
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// "jsonrpc": "2.0",
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// "result": {
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// "cashtokens": true,
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// "dsproof": true,
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// "genesis_hash": "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f",
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// "hash_function": "sha256",
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// "hosts": {
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// "bitcoin.stackwallet.com": {
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// "ssl_port": 50002,
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// "tcp_port": 50001,
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// "ws_port": 50003,
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// "wss_port": 50004
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// }
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// },
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// "protocol_max": "1.5",
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// "protocol_min": "1.4",
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// "pruning": null,
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// "server_version": "Fulcrum 1.9.1"
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// }
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// }
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// Close the socket.
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await socksSocket.close();
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}
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: null,
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child: const Text(
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"Connect to bitcoin.stackwallet.com:50002 (SSL) via socks socket",
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),
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),
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spacerSmall,
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Row(
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children: [
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// Bitcoin onion input field.
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Expanded(
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child: TextField(
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controller: bitcoinOnionController,
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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hintText: 'Bitcoin onion address to test',
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),
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),
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),
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spacerSmall,
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TextButton(
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onPressed: torStarted
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? () async {
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// Validate the onion address.
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if (!onionController.text.contains(".onion")) {
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print("Invalid onion address");
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return;
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} else if (!onionController.text.contains(":")) {
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print("Invalid onion address (needs port)");
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return;
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}
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String domain =
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bitcoinOnionController.text.split(":").first;
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int port = int.parse(
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bitcoinOnionController.text.split(":").last);
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// Instantiate a socks socket at localhost and on the port selected by the tor service.
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var socksSocket = await SOCKSSocket.create(
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proxyHost: InternetAddress.loopbackIPv4.address,
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proxyPort: Tor.instance.port,
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sslEnabled: !domain
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.endsWith(".onion"), // For SSL connections.
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);
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// Connect to the socks instantiated above.
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await socksSocket.connect();
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// Connect to onion node via socks socket.
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//
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// Note that this is an SSL example.
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await socksSocket.connectTo(domain, port);
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// Send a server features command to the connected socket, see method for more specific usage example..
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await socksSocket.sendServerFeaturesCommand();
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// You should see a server response printed to the console.
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//
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// Example response:
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// `flutter: secure responseData: {
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// "id": "0",
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// "jsonrpc": "2.0",
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// "result": {
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// "cashtokens": true,
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// "dsproof": true,
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// "genesis_hash": "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f",
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// "hash_function": "sha256",
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// "hosts": {
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// "bitcoin.stackwallet.com": {
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// "ssl_port": 50002,
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// "tcp_port": 50001,
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// "ws_port": 50003,
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// "wss_port": 50004
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// }
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// },
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// "protocol_max": "1.5",
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// "protocol_min": "1.4",
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// "pruning": null,
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// "server_version": "Fulcrum 1.9.1"
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// }
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// }
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// Close the socket.
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await socksSocket.close();
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}
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// A mutex should be added to this example to prevent
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// multiple connections from being made at once. TODO
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: null,
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child: const Text(
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"Test Bitcoin onion node connection",
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),
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),
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],
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),
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spacerSmall,
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Row(
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children: [
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// Monero onion input field.
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Expanded(
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child: TextField(
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controller: moneroOnionController,
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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hintText: 'Monero onion address to test',
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),
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),
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),
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spacerSmall,
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TextButton(
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onPressed: torStarted
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? () async {
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// Validate the onion address.
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if (!moneroOnionController.text
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.contains(".onion")) {
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print("Invalid onion address");
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return;
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} else if (!moneroOnionController.text
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.contains(":")) {
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print("Invalid onion address (needs port)");
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return;
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}
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final String host =
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moneroOnionController.text.split(":").first;
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final int port = int.parse(moneroOnionController
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.text
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.split(":")
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.last
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.split("/")
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.first);
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final String path = moneroOnionController.text
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.split(":")
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.last
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.split("/")
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.last; // Extract the path
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var socksSocket = await SOCKSSocket.create(
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proxyHost: InternetAddress.loopbackIPv4.address,
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proxyPort: Tor.instance.port,
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sslEnabled: false,
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);
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await socksSocket.connect();
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await socksSocket.connectTo(host, port);
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final body = jsonEncode({
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"jsonrpc": "2.0",
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"id": "0",
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"method": "get_info",
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});
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final request = 'POST /$path HTTP/1.1\r\n'
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'Host: $host\r\n'
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'Content-Type: application/json\r\n'
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'Content-Length: ${body.length}\r\n'
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'\r\n'
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'$body';
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socksSocket.write(request);
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print("Request sent: $request");
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await for (var response
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in socksSocket.inputStream) {
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final result = utf8.decode(response);
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print("Response received: $result");
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break;
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}
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// You should see a server response printed to the console.
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//
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// Example response:
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// Host: ucdouiihzwvb5edg3ezeufcs4yp26gq4x64n6b4kuffb7s7jxynnk7qd.onion
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// Content-Type: application/json
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// Content-Length: 46
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//
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// {"jsonrpc":"2.0","id":"0","method":"get_info"}
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// flutter: Response received: HTTP/1.1 200 Ok
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// Server: Epee-based
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// Content-Length: 1434
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// Content-Type: application/json
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// Last-Modified: Thu, 03 Oct 2024 23:08:19 GMT
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// Accept-Ranges: bytes
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//
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// {
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// "id": "0",
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// "jsonrpc": "2.0",
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// "result": {
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// "adjusted_time": 1727996959,
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// ...
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await socksSocket.close();
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}
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// A mutex should be added to this example to prevent
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// multiple connections from being made at once. TODO
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: null,
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child: const Text(
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"Test Monero onion node connection",
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),
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),
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],
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),
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],
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),
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),
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),
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);
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}
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}
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Reference in New Issue
Block a user