mirror of
https://github.com/lollipopkit/flutter_server_box.git
synced 2025-12-17 15:24:35 +01:00
395 lines
13 KiB
Dart
395 lines
13 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'package:computer/computer.dart';
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import 'package:dartssh2/dartssh2.dart';
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import 'package:fl_lib/fl_lib.dart';
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import 'package:flutter_gbk2utf8/flutter_gbk2utf8.dart';
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import 'package:freezed_annotation/freezed_annotation.dart';
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import 'package:riverpod_annotation/riverpod_annotation.dart';
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import 'package:server_box/core/extension/ssh_client.dart';
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import 'package:server_box/core/utils/server.dart';
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import 'package:server_box/core/utils/ssh_auth.dart';
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import 'package:server_box/data/helper/system_detector.dart';
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import 'package:server_box/data/model/app/error.dart';
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import 'package:server_box/data/model/app/scripts/script_consts.dart';
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import 'package:server_box/data/model/app/scripts/shell_func.dart';
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import 'package:server_box/data/model/server/connection_stat.dart';
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import 'package:server_box/data/model/server/server.dart';
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import 'package:server_box/data/model/server/server_private_info.dart';
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import 'package:server_box/data/model/server/server_status_update_req.dart';
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import 'package:server_box/data/model/server/system.dart';
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import 'package:server_box/data/model/server/try_limiter.dart';
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import 'package:server_box/data/provider/server/all.dart';
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import 'package:server_box/data/res/status.dart';
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import 'package:server_box/data/res/store.dart';
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import 'package:server_box/data/ssh/session_manager.dart';
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part 'single.g.dart';
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part 'single.freezed.dart';
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// Individual server state, including connection and status information
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@freezed
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abstract class ServerState with _$ServerState {
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const factory ServerState({
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required Spi spi,
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required ServerStatus status,
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@Default(ServerConn.disconnected) ServerConn conn,
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SSHClient? client,
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Future<void>? updateFuture,
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}) = _ServerState;
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}
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// Individual server state management
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@riverpod
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class ServerNotifier extends _$ServerNotifier {
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@override
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ServerState build(String serverId) {
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final serverNotifier = ref.read(serversNotifierProvider);
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final spi = serverNotifier.servers[serverId];
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if (spi == null) {
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throw StateError('Server $serverId not found');
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}
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return ServerState(spi: spi, status: InitStatus.status);
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}
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// Update connection status
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void updateConnection(ServerConn conn) {
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state = state.copyWith(conn: conn);
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}
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// Update server status
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void updateStatus(ServerStatus status) {
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state = state.copyWith(status: status);
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}
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// Update SSH client
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void updateClient(SSHClient? client) {
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state = state.copyWith(client: client);
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}
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// Update SPI configuration
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void updateSpi(Spi spi) {
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state = state.copyWith(spi: spi);
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}
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// Close connection
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void closeConnection() {
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final client = state.client;
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client?.close();
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state = state.copyWith(client: null, conn: ServerConn.disconnected);
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}
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// Refresh server status
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Future<void> refresh() async {
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if (state.updateFuture != null) {
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await state.updateFuture;
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return;
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}
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final updateFuture = _updateServer();
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state = state.copyWith(updateFuture: updateFuture);
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try {
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await updateFuture;
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} finally {
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state = state.copyWith(updateFuture: null);
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}
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}
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Future<void> _updateServer() async {
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await _getData();
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}
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Future<void> _getData() async {
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final spi = state.spi;
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final sid = spi.id;
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if (!TryLimiter.canTry(sid)) {
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if (state.conn != ServerConn.failed) {
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updateConnection(ServerConn.failed);
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}
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return;
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}
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final newStatus = state.status..err = null; // Clear previous error
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updateStatus(newStatus);
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if (state.conn < ServerConn.connecting || (state.client?.isClosed ?? true)) {
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updateConnection(ServerConn.connecting);
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// Wake on LAN
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final wol = spi.wolCfg;
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if (wol != null) {
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try {
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await wol.wake();
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} catch (e) {
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Loggers.app.warning('Wake on lan failed', e);
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}
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}
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try {
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final time1 = DateTime.now();
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final client = await genClient(
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spi,
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timeout: Duration(seconds: Stores.setting.timeout.fetch()),
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onKeyboardInteractive: (_) => KeybordInteractive.defaultHandle(spi),
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);
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updateClient(client);
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final time2 = DateTime.now();
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final spentTime = time2.difference(time1).inMilliseconds;
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if (spi.jumpId == null) {
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Loggers.app.info('Connected to ${spi.name} in $spentTime ms.');
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} else {
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Loggers.app.info('Jump to ${spi.name} in $spentTime ms.');
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}
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// Record successful connection
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Stores.connectionStats.recordConnection(ConnectionStat(
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serverId: spi.id,
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serverName: spi.name,
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timestamp: time1,
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result: ConnectionResult.success,
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durationMs: spentTime,
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));
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final sessionId = 'ssh_${spi.id}';
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TermSessionManager.add(
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id: sessionId,
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spi: spi,
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startTimeMs: time1.millisecondsSinceEpoch,
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disconnect: () => ref.read(serversNotifierProvider.notifier).closeOneServer(spi.id),
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status: TermSessionStatus.connecting,
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);
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TermSessionManager.setActive(sessionId, hasTerminal: false);
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} catch (e) {
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TryLimiter.inc(sid);
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// Determine connection failure type
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ConnectionResult failureResult;
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if (e.toString().contains('timeout') || e.toString().contains('Timeout')) {
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failureResult = ConnectionResult.timeout;
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} else if (e.toString().contains('auth') || e.toString().contains('Authentication')) {
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failureResult = ConnectionResult.authFailed;
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} else if (e.toString().contains('network') || e.toString().contains('Network')) {
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failureResult = ConnectionResult.networkError;
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} else {
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failureResult = ConnectionResult.unknownError;
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}
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// Record failed connection
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Stores.connectionStats.recordConnection(ConnectionStat(
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serverId: spi.id,
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serverName: spi.name,
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timestamp: DateTime.now(),
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result: failureResult,
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errorMessage: e.toString(),
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durationMs: 0,
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));
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final newStatus = state.status..err = SSHErr(type: SSHErrType.connect, message: e.toString());
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updateStatus(newStatus);
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updateConnection(ServerConn.failed);
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// Remove SSH session when connection fails
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final sessionId = 'ssh_${spi.id}';
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TermSessionManager.remove(sessionId);
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Loggers.app.warning('Connect to ${spi.name} failed', e);
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return;
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}
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updateConnection(ServerConn.connected);
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// Update SSH session status to connected
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final sessionId = 'ssh_${spi.id}';
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TermSessionManager.updateStatus(sessionId, TermSessionStatus.connected);
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try {
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// Detect system type
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final detectedSystemType = await SystemDetector.detect(state.client!, spi);
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final newStatus = state.status..system = detectedSystemType;
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updateStatus(newStatus);
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final (_, writeScriptResult) = await state.client!.exec(
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(session) async {
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final scriptRaw = ShellFuncManager.allScript(
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spi.custom?.cmds,
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systemType: detectedSystemType,
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disabledCmdTypes: spi.disabledCmdTypes,
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).uint8List;
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session.stdin.add(scriptRaw);
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session.stdin.close();
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},
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entry: ShellFuncManager.getInstallShellCmd(
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spi.id,
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systemType: detectedSystemType,
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customDir: spi.custom?.scriptDir,
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),
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);
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if (writeScriptResult.isNotEmpty && detectedSystemType != SystemType.windows) {
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ShellFuncManager.switchScriptDir(spi.id, systemType: detectedSystemType);
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throw writeScriptResult;
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}
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} on SSHAuthAbortError catch (e) {
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TryLimiter.inc(sid);
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final err = SSHErr(type: SSHErrType.auth, message: e.toString());
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final newStatus = state.status..err = err;
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updateStatus(newStatus);
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Loggers.app.warning(err);
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updateConnection(ServerConn.failed);
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final sessionId = 'ssh_${spi.id}';
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TermSessionManager.updateStatus(sessionId, TermSessionStatus.disconnected);
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return;
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} on SSHAuthFailError catch (e) {
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TryLimiter.inc(sid);
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final err = SSHErr(type: SSHErrType.auth, message: e.toString());
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final newStatus = state.status..err = err;
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updateStatus(newStatus);
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Loggers.app.warning(err);
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updateConnection(ServerConn.failed);
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final sessionId = 'ssh_${spi.id}';
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TermSessionManager.updateStatus(sessionId, TermSessionStatus.disconnected);
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return;
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} catch (e) {
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final err = SSHErr(type: SSHErrType.writeScript, message: e.toString());
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final newStatus = state.status..err = err;
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updateStatus(newStatus);
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Loggers.app.warning(err);
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updateConnection(ServerConn.failed);
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final sessionId = 'ssh_${spi.id}';
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TermSessionManager.updateStatus(sessionId, TermSessionStatus.disconnected);
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}
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}
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if (state.conn == ServerConn.connecting) return;
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// Keep finished status to prevent UI from refreshing to loading state
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if (state.conn != ServerConn.finished) {
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updateConnection(ServerConn.loading);
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}
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List<String>? segments;
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String? raw;
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try {
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final execResult = await state.client?.run(
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ShellFunc.status.exec(spi.id, systemType: state.status.system, customDir: spi.custom?.scriptDir),
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);
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if (execResult != null) {
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String? rawStr;
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bool needGbk = false;
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try {
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rawStr = utf8.decode(execResult, allowMalformed: true);
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// If there are unparseable characters, try fallback to GBK decoding
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if (rawStr.contains('<EFBFBD>')) {
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Loggers.app.warning('UTF8 decoding failed, use GBK decoding');
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needGbk = true;
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}
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} catch (e) {
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Loggers.app.warning('UTF8 decoding failed, use GBK decoding', e);
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needGbk = true;
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}
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if (needGbk) {
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try {
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rawStr = gbk.decode(execResult);
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} catch (e2) {
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Loggers.app.warning('GBK decoding failed', e2);
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rawStr = null;
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}
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}
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if (rawStr == null) {
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Loggers.app.warning('Decoding failed, execResult: $execResult');
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}
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raw = rawStr;
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} else {
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raw = execResult.toString();
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}
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if (raw == null || raw.isEmpty) {
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TryLimiter.inc(sid);
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final newStatus = state.status
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..err = SSHErr(type: SSHErrType.segements, message: 'decode or split failed, raw:\n$raw');
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updateStatus(newStatus);
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updateConnection(ServerConn.failed);
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final sessionId = 'ssh_${spi.id}';
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TermSessionManager.updateStatus(sessionId, TermSessionStatus.disconnected);
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return;
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}
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segments = raw.split(ScriptConstants.separator).map((e) => e.trim()).toList();
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if (raw.isEmpty || segments.isEmpty) {
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if (Stores.setting.keepStatusWhenErr.fetch()) {
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// Keep previous server status when error occurs
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if (state.conn != ServerConn.failed && state.status.more.isNotEmpty) {
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return;
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}
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}
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TryLimiter.inc(sid);
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final newStatus = state.status
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..err = SSHErr(type: SSHErrType.segements, message: 'Seperate segments failed, raw:\n$raw');
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updateStatus(newStatus);
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updateConnection(ServerConn.failed);
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final sessionId = 'ssh_${spi.id}';
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TermSessionManager.updateStatus(sessionId, TermSessionStatus.disconnected);
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return;
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}
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} catch (e) {
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TryLimiter.inc(sid);
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final newStatus = state.status..err = SSHErr(type: SSHErrType.getStatus, message: e.toString());
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updateStatus(newStatus);
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updateConnection(ServerConn.failed);
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Loggers.app.warning('Get status from ${spi.name} failed', e);
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final sessionId = 'ssh_${spi.id}';
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TermSessionManager.updateStatus(sessionId, TermSessionStatus.disconnected);
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return;
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}
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try {
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// Parse script output into command-specific mappings
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final parsedOutput = ScriptConstants.parseScriptOutput(raw);
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final req = ServerStatusUpdateReq(
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ss: state.status,
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parsedOutput: parsedOutput,
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system: state.status.system,
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customCmds: spi.custom?.cmds ?? {},
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);
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final newStatus = await Computer.shared.start(getStatus, req, taskName: 'StatusUpdateReq<${spi.id}>');
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updateStatus(newStatus);
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} catch (e, trace) {
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TryLimiter.inc(sid);
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final newStatus = state.status
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..err = SSHErr(type: SSHErrType.getStatus, message: 'Parse failed: $e\n\n$raw');
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updateStatus(newStatus);
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updateConnection(ServerConn.failed);
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Loggers.app.warning('Server status', e, trace);
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final sessionId = 'ssh_${spi.id}';
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TermSessionManager.updateStatus(sessionId, TermSessionStatus.disconnected);
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return;
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}
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// Set Server.isBusy to false each time this method is called
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updateConnection(ServerConn.finished);
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// Reset retry count only after successful preparation
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TryLimiter.reset(sid);
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}
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}
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extension IndividualServerStateExtension on ServerState {
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bool get needGenClient => conn < ServerConn.connecting;
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bool get canViewDetails => conn == ServerConn.finished;
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String get id => spi.id;
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}
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