Šepot — end-to-end encrypted messenger
Initial public release. Anonymous on-device identity (no phone number, e-mail, or password), Signal-protocol cryptography (X3DH + PQXDH, Double Ratchet, sealed sender) via libsignal, a metadata-minimizing relay, group chats, disappearing messages, encrypted local storage, optional Tor transport, and a UI localized into Czech, English, German, Russian, and Italian. Monorepo: Flutter client (app/), Rust relay + wire types (rust/), protobuf definitions (proto/), self-host deploy (deploy/). Licensed under AGPL-3.0 with an app-store distribution exception (§7).
This commit is contained in:
Julius Joska
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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_riverpod/flutter_riverpod.dart';
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import 'package:go_router/go_router.dart';
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import 'package:sepot/core/constants/app_constants.dart';
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import 'package:sepot/core/crypto/mnemonic.dart';
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import 'package:sepot/core/l10n/error_messages.dart';
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import 'package:sepot/core/l10n/l10n.dart';
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import 'package:sepot/core/theme/app_theme.dart';
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import 'package:sepot/providers/identity_provider.dart';
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import 'package:sepot/providers/storage_provider.dart';
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/// Obnova účtu ze zálohovací fráze (24 slov). Vrátí IDENTITU (klíč →
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/// stejný SEP kód a safety number), NE historii zpráv.
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class RestoreScreen extends ConsumerStatefulWidget {
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const RestoreScreen({super.key});
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@override
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ConsumerState<RestoreScreen> createState() => _RestoreScreenState();
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}
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class _RestoreScreenState extends ConsumerState<RestoreScreen> {
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final _nameController = TextEditingController();
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final _wordsController = TextEditingController();
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bool _restoring = false;
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String? _error;
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@override
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void dispose() {
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_nameController.dispose();
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_wordsController.dispose();
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super.dispose();
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}
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/// Rozsekej vstup na slova (mezery, nové řádky, čárky, čísla „1." pryč).
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List<String> _parseWords(String raw) {
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return raw
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.toLowerCase()
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.replaceAll(RegExp(r'\d+[.)]?'), ' ')
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.split(RegExp(r'[\s,]+'))
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.where((w) => w.isNotEmpty)
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.toList();
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}
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int get _wordCount => _parseWords(_wordsController.text).length;
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Future<void> _restore() async {
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final name = _nameController.text.trim();
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final words = _parseWords(_wordsController.text);
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if (name.isEmpty) {
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setState(() => _error = context.l10n.restoreErrorNameRequired);
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return;
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}
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if (words.length != AppConstants.seedPhraseWords) {
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setState(() => _error = context.l10n.restoreErrorWordCount(
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_wordCount, AppConstants.seedPhraseWords));
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return;
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}
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if (!SepotMnemonic.isValid(words)) {
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setState(() => _error = context.l10n.restoreErrorInvalidPhrase);
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return;
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}
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setState(() {
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_restoring = true;
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_error = null;
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});
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try {
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await ref
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.read(identityProvider.notifier)
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.recoverIdentity(words, name);
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await ref.read(storageProvider).setOnboardingComplete(true);
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if (mounted) context.go('/pin-setup');
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} catch (e) {
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if (!mounted) return;
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setState(() {
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_restoring = false;
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_error =
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context.l10n.restoreErrorFailed(describeError(context.l10n, e));
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});
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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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final ok = _wordCount == AppConstants.seedPhraseWords &&
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_nameController.text.trim().isNotEmpty;
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return Scaffold(
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appBar: AppBar(title: Text(context.l10n.restoreTitle)),
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body: SafeArea(
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child: SingleChildScrollView(
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padding: const EdgeInsets.all(24),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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context.l10n.restoreHeading,
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style: const TextStyle(
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fontFamily: kFontSans,
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fontSize: 22,
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fontWeight: FontWeight.w700,
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color: SepotColors.textPrimary,
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),
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),
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const SizedBox(height: 8),
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Text(
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context.l10n.restoreIntro(AppConstants.seedPhraseWords),
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style: const TextStyle(
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fontFamily: kFontSans,
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fontSize: 14,
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height: 1.5,
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color: SepotColors.textSecondary,
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),
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),
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const SizedBox(height: 20),
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// Upozornění na historii
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Container(
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padding: const EdgeInsets.all(12),
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(12),
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color: SepotColors.warning.withValues(alpha: 0.1),
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border: Border.all(
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color: SepotColors.warning.withValues(alpha: 0.3)),
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),
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child: Row(
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children: [
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const Icon(Icons.info_outline,
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size: 20, color: SepotColors.warning),
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const SizedBox(width: 10),
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Expanded(
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child: Text(
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context.l10n.restoreHistoryWarning,
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style: TextStyle(
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fontSize: 13,
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color: SepotColors.textPrimary.withValues(alpha: .9)),
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),
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),
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],
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),
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),
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const SizedBox(height: 24),
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TextField(
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controller: _nameController,
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decoration: InputDecoration(
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labelText: context.l10n.onboardingDisplayNameLabel,
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hintText: context.l10n.onboardingDisplayNameHint,
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prefixIcon: const Icon(Icons.person_outline),
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),
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textCapitalization: TextCapitalization.words,
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onChanged: (_) => setState(() {}),
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),
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const SizedBox(height: 20),
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TextField(
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controller: _wordsController,
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minLines: 4,
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maxLines: 8,
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autocorrect: false,
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enableSuggestions: false,
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inputFormatters: [
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FilteringTextInputFormatter.deny(RegExp(r'[^\w\s.,)]')),
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],
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decoration: InputDecoration(
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labelText: context.l10n.settingsSeedPhraseTitle,
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hintText: context.l10n.restorePhraseHint,
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alignLabelWithHint: true,
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helperText: context.l10n.restoreWordCountHelper(
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_wordCount, AppConstants.seedPhraseWords),
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helperStyle: TextStyle(
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color: _wordCount == AppConstants.seedPhraseWords
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? SepotColors.sage
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: SepotColors.textMuted,
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),
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),
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onChanged: (_) => setState(() => _error = null),
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),
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if (_error != null) ...[
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const SizedBox(height: 12),
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Text(_error!,
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style: const TextStyle(
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color: SepotColors.error, fontSize: 13)),
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],
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const SizedBox(height: 28),
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SizedBox(
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width: double.infinity,
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child: ElevatedButton(
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onPressed: (ok && !_restoring) ? _restore : null,
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child: _restoring
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? const SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(
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strokeWidth: 2, color: Colors.white),
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)
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: Text(context.l10n.restoreTitle),
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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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