372 lines
11 KiB
Dart
372 lines
11 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'dart:io';
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import 'package:flutter/cupertino.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_platform_widgets/flutter_platform_widgets.dart';
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import 'package:mobile_nebula/components/SimplePage.dart';
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import 'package:mobile_nebula/components/SiteItem.dart';
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import 'package:mobile_nebula/models/Certificate.dart';
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import 'package:mobile_nebula/models/IPAndPort.dart';
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import 'package:mobile_nebula/models/Site.dart';
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import 'package:mobile_nebula/models/StaticHosts.dart';
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import 'package:mobile_nebula/models/UnsafeRoute.dart';
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import 'package:mobile_nebula/screens/EnrollmentScreen.dart';
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import 'package:mobile_nebula/screens/SettingsScreen.dart';
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import 'package:mobile_nebula/screens/SiteDetailScreen.dart';
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import 'package:mobile_nebula/screens/siteConfig/SiteConfigScreen.dart';
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import 'package:mobile_nebula/services/utils.dart';
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import 'package:pull_to_refresh/pull_to_refresh.dart';
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import 'package:uuid/uuid.dart';
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/// Contains an expired CA and certificate
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const badDebugSave = {
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'name': 'Bad Site',
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'cert': '''-----BEGIN NEBULA CERTIFICATE-----
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CmIKBHRlc3QSCoKUoIUMgP7//w8ourrS+QUwjre3iAY6IDbmIX5cwd+UYVhLADLa
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A5PwucZPVrNtP0P9NJE0boM2SiBSGzy8bcuFWWK5aVArJGA9VDtLg1HuujBu8lOp
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VTgklxJAgbI1Xb1C9JC3a1Cnc6NPqWhnw+3VLoDXE9poBav09+zhw5DPDtgvQmxU
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Sbw6cAF4gPS4e/tZ5Kjc8QEvjk3HDQ==
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-----END NEBULA CERTIFICATE-----''',
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'key': '''-----BEGIN NEBULA X25519 PRIVATE KEY-----
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rmXnR1yvDZi1VPVmnNVY8NMsQpEpbbYlq7rul+ByQvg=
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-----END NEBULA X25519 PRIVATE KEY-----''',
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'ca': '''-----BEGIN NEBULA CERTIFICATE-----
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CjkKB3Rlc3QgY2EopYyK9wUwpfOOhgY6IHj4yrtHbq+rt4hXTYGrxuQOS0412uKT
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4wi5wL503+SAQAESQPhWXuVGjauHS1Qqd3aNA3DY+X8CnAweXNEoJKAN/kjH+BBv
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mUOcsdFcCZiXrj7ryQIG1+WfqA46w71A/lV4nAc=
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-----END NEBULA CERTIFICATE-----''',
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};
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/// Contains an expired CA and certificate
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const goodDebugSave = {
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'name': 'Good Site',
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'cert': '''-----BEGIN NEBULA CERTIFICATE-----
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CmcKCmRlYnVnIGhvc3QSCYKAhFCA/v//DyiX0ZaaBjDjjPf5ETogyYzKdlRh7pW6
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yOd8+aMQAFPha2wuYixuq53ru9+qXC9KIJd3ow6qIiaHInT1dgJvy+122WK7g86+
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Z8qYtTZnox1cEkBYpC0SySrCp6jd/zeAFEJM6naPYgc6rmy/H/qveyQ6WAtbgLpK
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tM3EXbbOE9+fV/Ma6Oilf1SixO3ZBo30nRYL
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-----END NEBULA CERTIFICATE-----''',
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'key': '''-----BEGIN NEBULA X25519 PRIVATE KEY-----
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vu9t0mNy8cD5x3CMVpQ/cdKpjdz46NBlcRqvJAQpO44=
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-----END NEBULA X25519 PRIVATE KEY-----''',
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'ca': '''-----BEGIN NEBULA CERTIFICATE-----
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CjcKBWRlYnVnKOTQlpoGMOSM9/kROiCWNJUs7c4ZRzUn2LbeAEQrz2PVswnu9dcL
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Sn/2VNNu30ABEkCQtWxmCJqBr5Yd9vtDWCPo/T1JQmD3stBozcM6aUl1hP3zjURv
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MAIH7gzreMGgrH/yR6rZpIHR3DxJ3E0aHtEI
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-----END NEBULA CERTIFICATE-----''',
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};
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class MainScreen extends StatefulWidget {
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const MainScreen(this.dnEnrollStream, {Key? key}) : super(key: key);
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final Stream dnEnrollStream;
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@override
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_MainScreenState createState() => _MainScreenState();
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}
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class _MainScreenState extends State<MainScreen> {
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List<Site>? sites;
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// A set of widgets to display in a column that represents an error blocking us from moving forward entirely
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List<Widget>? error;
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static const platform = MethodChannel('net.defined.mobileNebula/NebulaVpnService');
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RefreshController refreshController = RefreshController();
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ScrollController scrollController = ScrollController();
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@override
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void initState() {
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_loadSites();
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widget.dnEnrollStream.listen((_) {
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_loadSites();
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});
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platform.setMethodCallHandler(handleMethodCall);
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super.initState();
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}
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@override
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void dispose() {
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scrollController.dispose();
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refreshController.dispose();
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super.dispose();
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}
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Future<dynamic> handleMethodCall(MethodCall call) async {
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switch (call.method) {
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case "refreshSites":
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_loadSites();
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break;
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default:
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print("ERR: Unexpected method call ${call.method}");
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}
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}
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@override
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Widget build(BuildContext context) {
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Widget? debugSite;
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if (kDebugMode) {
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debugSite = Row(
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children: [
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_debugSave(badDebugSave),
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_debugSave(goodDebugSave),
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_debugDNEnroll(),
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],
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mainAxisAlignment: MainAxisAlignment.center,
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);
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}
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return SimplePage(
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title: Text('Nebula'),
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scrollable: SimpleScrollable.vertical,
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scrollController: scrollController,
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leadingAction: PlatformIconButton(
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padding: EdgeInsets.zero,
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icon: Icon(Icons.add, size: 28.0),
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onPressed: () => Utils.openPage(context, (context) {
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return SiteConfigScreen(onSave: (_) {
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_loadSites();
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});
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}),
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),
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refreshController: refreshController,
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onRefresh: () {
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print("onRefresh");
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_loadSites();
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refreshController.refreshCompleted();
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},
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trailingActions: <Widget>[
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PlatformIconButton(
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padding: EdgeInsets.zero,
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icon: Icon(Icons.menu, size: 28.0),
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onPressed: () => Utils.openPage(context, (_) => SettingsScreen()),
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),
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],
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bottomBar: debugSite,
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child: _buildBody(),
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);
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}
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Widget _buildBody() {
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if (error != null) {
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return Center(
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child: Padding(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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crossAxisAlignment: CrossAxisAlignment.center,
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children: error!,
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),
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padding: EdgeInsets.symmetric(vertical: 0, horizontal: 10)));
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}
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return _buildSites();
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}
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Widget _buildNoSites() {
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return Padding(
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padding: const EdgeInsets.all(8.0),
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child: Center(
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child: Column(
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children: <Widget>[
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Padding(
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padding: const EdgeInsets.fromLTRB(0, 8.0, 0, 8.0),
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child: Text('Welcome to Nebula!', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 20)),
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),
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Text('You don\'t have any site configurations installed yet. Hit the plus button above to get started.',
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textAlign: TextAlign.center),
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],
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),
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));
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}
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Widget _buildSites() {
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if (sites == null || sites!.length == 0) {
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return _buildNoSites();
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}
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List<Widget> items = [];
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sites!.forEach((site) {
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items.add(SiteItem(
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key: Key(site.id),
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site: site,
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onPressed: () {
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Utils.openPage(context, (context) {
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return SiteDetailScreen(site: site, onChanged: () => _loadSites());
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});
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}));
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});
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Widget child = ReorderableListView(
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shrinkWrap: true,
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scrollController: scrollController,
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padding: EdgeInsets.symmetric(vertical: 5),
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children: items,
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onReorder: (oldI, newI) async {
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if (oldI < newI) {
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// removing the item at oldIndex will shorten the list by 1.
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newI -= 1;
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}
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setState(() {
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final Site moved = sites!.removeAt(oldI);
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sites!.insert(newI, moved);
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});
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for (var i = 0; i < sites!.length; i++) {
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if (sites![i].sortKey == i) {
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continue;
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}
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sites![i].sortKey = i;
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try {
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await sites![i].save();
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} catch (err) {
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//TODO: display error at the end
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print('ERR ${sites![i].name} - $err');
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}
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}
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_loadSites();
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});
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if (Platform.isIOS) {
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child = CupertinoTheme(child: child, data: CupertinoTheme.of(context));
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}
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// The theme here is to remove the hardcoded canvas border reordering forces on us
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return Theme(data: Theme.of(context).copyWith(canvasColor: Colors.transparent), child: child);
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}
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Widget _debugSave(Map<String, String> siteConfig) {
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return CupertinoButton(
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child: Text(siteConfig['name']!),
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onPressed: () async {
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var uuid = Uuid();
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var s = Site(
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name: siteConfig['name']!,
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id: uuid.v4(),
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staticHostmap: {
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"10.1.0.1": StaticHost(
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lighthouse: true,
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destinations: [IPAndPort(ip: '10.1.1.53', port: 4242), IPAndPort(ip: '1::1', port: 4242)])
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},
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ca: [CertificateInfo.debug(rawCert: siteConfig['ca'])],
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certInfo: CertificateInfo.debug(rawCert: siteConfig['cert']),
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unsafeRoutes: [UnsafeRoute(route: '10.3.3.3/32', via: '10.1.0.1')]);
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s.key = siteConfig['key'];
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var err = await s.save();
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if (err != null) {
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Utils.popError(context, "Failed to save the site", err);
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} else {
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_loadSites();
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}
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},
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);
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}
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Widget _debugDNEnroll() {
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return CupertinoButton(
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child: Text('DN Enroll'),
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onPressed: () => Utils.openPage(context, (context) {
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return EnrollmentScreen(allowCodeEntry: true);
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}),
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);
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}
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_loadSites() async {
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if (Platform.isAndroid) {
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try {
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await platform.invokeMethod("android.requestPermissions");
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} on PlatformException catch (err) {
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if (err.code == "PERMISSIONS") {
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setState(() {
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error = [
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Text("Permissions Required", style: TextStyle(fontWeight: FontWeight.bold)),
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Text(
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"VPN permissions are required for nebula to run, click the button below request and accept the appropriate permissions.",
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textAlign: TextAlign.center),
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ElevatedButton(
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onPressed: () {
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error = null;
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_loadSites();
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},
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child: Text("Request Permissions")),
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];
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});
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} else {
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setState(() {
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error = [
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Text("Unknown Error", style: TextStyle(fontWeight: FontWeight.bold)),
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Text(err.message ?? 'An unknown error occurred', textAlign: TextAlign.center)
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];
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});
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}
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} catch (err) {
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setState(() {
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error = [
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Text("Unknown Error", style: TextStyle(fontWeight: FontWeight.bold)),
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Text(err.toString(), textAlign: TextAlign.center)
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];
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});
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}
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}
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//TODO: This can throw, we need to show an error dialog
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Map<String, dynamic> rawSites = jsonDecode(await platform.invokeMethod('listSites'));
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bool hasErrors = false;
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sites = [];
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rawSites.forEach((id, rawSite) {
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try {
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var site = Site.fromJson(rawSite);
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if (site.errors.length > 0) {
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hasErrors = true;
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}
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//TODO: we need to cancel change listeners when we rebuild
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site.onChange().listen((_) {
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setState(() {});
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}, onError: (err) {
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setState(() {});
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if (ModalRoute.of(context)!.isCurrent) {
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Utils.popError(context, "${site.name} Error", err);
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}
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});
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sites!.add(site);
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} catch (err) {
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//TODO: handle error
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print("$err site config: $rawSite");
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// Sometimes it is helpful to just nuke these is dev
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// platform.invokeMethod('deleteSite', id);
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}
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});
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if (Platform.isAndroid) {
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// Android suffers from a race to discover the active site and attach site specific event listeners
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platform.invokeMethod("android.registerActiveSite");
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}
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sites!.sort((a, b) {
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if (a.sortKey == b.sortKey) {
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return a.name.compareTo(b.name);
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}
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return a.sortKey - b.sortKey;
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});
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setState(() {});
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}
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}
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