mirror of
https://github.com/lollipopkit/flutter_server_box.git
synced 2025-12-17 07:14:28 +01:00
382 lines
12 KiB
Dart
382 lines
12 KiB
Dart
import 'dart:async';
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import 'package:dartssh2/dartssh2.dart';
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import 'package:flutter/foundation.dart';
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import 'package:logging/logging.dart';
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import 'package:toolbox/core/extension/stringx.dart';
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import 'package:toolbox/core/extension/uint8list.dart';
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import 'package:toolbox/core/provider_base.dart';
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import 'package:toolbox/data/model/server/cpu_status.dart';
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import 'package:toolbox/data/model/server/memory.dart';
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import 'package:toolbox/data/model/server/net_speed.dart';
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import 'package:toolbox/data/model/server/disk_info.dart';
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import 'package:toolbox/data/model/server/server.dart';
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import 'package:toolbox/data/model/server/server_private_info.dart';
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import 'package:toolbox/data/model/server/server_status.dart';
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import 'package:toolbox/data/model/server/snippet.dart';
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import 'package:toolbox/data/model/server/tcp_status.dart';
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import 'package:toolbox/data/store/private_key.dart';
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import 'package:toolbox/data/store/server.dart';
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import 'package:toolbox/data/store/setting.dart';
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import 'package:toolbox/locator.dart';
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/// Must put this func out of any Class.
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/// Because of this function is called by [compute] in [ServerProvider.genClient].
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/// https://stackoverflow.com/questions/51998995/invalid-arguments-illegal-argument-in-isolate-message-object-is-a-closure
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List<SSHKeyPair> loadIndentity(String key) {
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return SSHKeyPair.fromPem(key);
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}
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const seperator = 'A====A';
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const shellCmd = "export LANG=en_US.utf-8 \necho '$seperator' \n"
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"cat /proc/net/dev && date +%s \necho $seperator \n "
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"cat /etc/os-release | grep PRETTY_NAME \necho $seperator \n"
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"cat /proc/stat | grep cpu \necho $seperator \n"
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"uptime \necho $seperator \n"
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"cat /proc/net/snmp \necho $seperator \n"
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"df -h \necho $seperator \n"
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"cat /proc/meminfo \necho $seperator \n"
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"cat /sys/class/thermal/thermal_zone*/type \necho $seperator \n"
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"cat /sys/class/thermal/thermal_zone*/temp";
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const shellPath = '.serverbox.sh';
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final cpuTempReg = RegExp(r'(x86_pkg_temp|cpu_thermal)');
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final numReg = RegExp(r'\s{1,}');
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final memItemReg = RegExp(r'([A-Z].+:)\s+([0-9]+) kB');
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class ServerProvider extends BusyProvider {
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List<Server> _servers = [];
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List<Server> get servers => _servers;
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Timer? _timer;
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final logger = Logger('SERVER');
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Future<void> loadLocalData() async {
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setBusyState(true);
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final infos = locator<ServerStore>().fetch();
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_servers = List.generate(infos.length, (index) => genInfo(infos[index]));
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setBusyState(false);
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notifyListeners();
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}
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Server genInfo(ServerPrivateInfo spi) {
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return Server(spi, initStatus, null, ServerConnectionState.disconnected);
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}
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Future<SSHClient> genClient(ServerPrivateInfo spi) async {
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final socket = await SSHSocket.connect(spi.ip, spi.port);
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if (spi.pubKeyId == null) {
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return SSHClient(socket,
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username: spi.user, onPasswordRequest: () => spi.pwd);
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}
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final key = locator<PrivateKeyStore>().get(spi.pubKeyId!);
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return SSHClient(socket,
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username: spi.user,
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identities: await compute(loadIndentity, key.privateKey));
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}
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Future<void> refreshData({ServerPrivateInfo? spi}) async {
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if (spi != null) {
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_getData(spi);
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return;
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}
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await Future.wait(_servers.map((s) async {
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await _getData(s.spi);
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}));
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}
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Future<void> startAutoRefresh() async {
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final duration =
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locator<SettingStore>().serverStatusUpdateInterval.fetch()!;
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if (duration == 0) return;
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stopAutoRefresh();
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_timer = Timer.periodic(Duration(seconds: duration), (_) async {
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await refreshData();
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});
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}
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void stopAutoRefresh() {
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if (_timer != null) {
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_timer!.cancel();
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_timer = null;
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}
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}
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void setDisconnected() {
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for (var i = 0; i < _servers.length; i++) {
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_servers[i].cs = ServerConnectionState.disconnected;
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}
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}
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void closeServer({ServerPrivateInfo? spi}) {
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if (spi == null) {
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for (var i = 0; i < _servers.length; i++) {
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_servers[i].client?.close();
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_servers[i].client = null;
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}
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return;
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}
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final idx = _servers.indexWhere((e) => e.spi == spi);
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if (idx < 0) {
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throw RangeError.index(idx, _servers);
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}
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_servers[idx].client?.close();
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}
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void addServer(ServerPrivateInfo spi) {
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_servers.add(genInfo(spi));
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locator<ServerStore>().put(spi);
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notifyListeners();
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refreshData(spi: spi);
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}
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void delServer(ServerPrivateInfo info) {
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final idx = _servers.indexWhere((s) => s.spi == info);
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if (idx == -1) return;
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_servers[idx].client?.close();
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_servers.removeAt(idx);
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notifyListeners();
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locator<ServerStore>().delete(info);
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}
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Future<void> updateServer(
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ServerPrivateInfo old, ServerPrivateInfo newSpi) async {
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final idx = _servers.indexWhere((e) => e.spi == old);
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if (idx < 0) {
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throw RangeError.index(idx, _servers);
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}
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_servers[idx].spi = newSpi;
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locator<ServerStore>().update(old, newSpi);
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_servers[idx].client = await genClient(newSpi);
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notifyListeners();
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refreshData(spi: newSpi);
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}
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Future<void> _getData(ServerPrivateInfo spi) async {
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final s = _servers.firstWhere((element) => element.spi == spi);
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final state = s.cs;
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if (state == ServerConnectionState.failed ||
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state == ServerConnectionState.disconnected) {
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s.cs = ServerConnectionState.connecting;
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notifyListeners();
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final time1 = DateTime.now();
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try {
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s.client = await genClient(spi);
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final time2 = DateTime.now();
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logger.info(
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'Connected to [${spi.name}] in [${time2.difference(time1).toString()}].');
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s.cs = ServerConnectionState.connected;
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final writeResult = await s.client!
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.run("echo '$shellCmd' > $shellPath && chmod +x $shellPath")
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.string;
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if (writeResult.isNotEmpty) {
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throw Exception(writeResult);
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}
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} catch (e) {
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s.cs = ServerConnectionState.failed;
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s.status.failedInfo = '$e ## ';
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logger.warning(e);
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} finally {
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notifyListeners();
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}
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}
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// if client is null, return
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if (s.client == null) return;
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final raw = await s.client!.run("sh $shellPath").string;
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final segments = raw.split(seperator).map((e) => e.trim()).toList();
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if (raw.isEmpty || segments.length == 1) {
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s.cs = ServerConnectionState.failed;
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if (s.status.failedInfo == null || s.status.failedInfo!.isEmpty) {
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s.status.failedInfo = 'No data received';
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}
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notifyListeners();
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return;
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}
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segments.removeAt(0);
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try {
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_getCPU(spi, segments[2], segments[7], segments[8]);
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_getMem(spi, segments[6]);
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_getSysVer(spi, segments[1]);
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_getUpTime(spi, segments[3]);
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_getDisk(spi, segments[5]);
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_getTcp(spi, segments[4]);
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_getNetSpeed(spi, segments[0]);
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} catch (e) {
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s.cs = ServerConnectionState.failed;
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s.status.failedInfo = e.toString();
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logger.warning(e);
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rethrow;
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} finally {
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notifyListeners();
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}
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}
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/// [raw] example:
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/// Inter-| Receive | Transmit
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/// face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
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/// lo: 45929941 269112 0 0 0 0 0 0 45929941 269112 0 0 0 0 0 0
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/// eth0: 48481023 505772 0 0 0 0 0 0 36002262 202307 0 0 0 0 0 0
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/// 1635752901
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Future<void> _getNetSpeed(ServerPrivateInfo spi, String raw) async {
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final info = _servers.firstWhere((e) => e.spi == spi);
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info.status.netSpeed.update(await compute(_parseNetSpeed, raw));
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}
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void _getSysVer(ServerPrivateInfo spi, String raw) {
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final info = _servers.firstWhere((e) => e.spi == spi);
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final s = raw.split('=');
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if (s.length == 2) {
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info.status.sysVer = s[1].replaceAll('"', '').replaceFirst('\n', '');
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}
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}
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Future<void> _getCPU(ServerPrivateInfo spi, String raw, String tempType,
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String tempValue) async {
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final info = _servers.firstWhere((e) => e.spi == spi);
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final cpus = await compute(_parseCPU, raw);
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if (cpus.isNotEmpty) {
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info.status.cpu
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.update(cpus, await compute(_getCPUTemp, [tempType, tempValue]));
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}
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}
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void _getUpTime(ServerPrivateInfo spi, String raw) {
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_servers.firstWhere((e) => e.spi == spi).status.uptime =
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raw.split('up ')[1].split(', ')[0];
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}
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Future<void> _getTcp(ServerPrivateInfo spi, String raw) async {
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final info = _servers.firstWhere((e) => e.spi == spi);
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final status = await compute(_parseTcp, raw);
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if (status != null) {
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info.status.tcp = status;
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}
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}
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void _getDisk(ServerPrivateInfo spi, String raw) {
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final info = _servers.firstWhere((e) => e.spi == spi);
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final list = <DiskInfo>[];
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final items = raw.split('\n');
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for (var item in items) {
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if (items.indexOf(item) == 0 || item.isEmpty) {
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continue;
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}
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final vals = item.split(numReg);
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list.add(DiskInfo(vals[0], vals[5],
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int.parse(vals[4].replaceFirst('%', '')), vals[2], vals[1], vals[3]));
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}
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info.status.disk = list;
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}
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Future<void> _getMem(ServerPrivateInfo spi, String raw) async {
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final info = _servers.firstWhere((e) => e.spi == spi);
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final mem = await compute(_parseMem, raw);
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info.status.mem = mem;
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}
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Future<String?> runSnippet(String id, Snippet snippet) async {
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final client =
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_servers.firstWhere((element) => element.spi.id == id).client;
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if (client == null) {
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return null;
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}
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return await client.run(snippet.script).string;
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}
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}
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Memory _parseMem(String raw) {
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final items = raw.split('\n').map((e) => memItemReg.firstMatch(e)).toList();
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final total = int.parse(
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items.firstWhere((e) => e?.group(1) == 'MemTotal:')?.group(2) ?? '1');
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final free = int.parse(
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items.firstWhere((e) => e?.group(1) == 'MemFree:')?.group(2) ?? '0');
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final cached = int.parse(
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items.firstWhere((e) => e?.group(1) == 'Cached:')?.group(2) ?? '0');
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final available = int.parse(
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items.firstWhere((e) => e?.group(1) == 'MemAvailable:')?.group(2) ?? '0');
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return Memory(
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total: total,
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used: total - available,
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free: free,
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cache: cached,
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avail: available);
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}
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TcpStatus? _parseTcp(String raw) {
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final lines = raw.split('\n');
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final idx = lines.lastWhere((element) => element.startsWith('Tcp:'),
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orElse: () => '');
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if (idx != '') {
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final vals = idx.split(numReg);
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return TcpStatus(vals[5].i, vals[6].i, vals[7].i, vals[8].i);
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}
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return null;
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}
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List<OneTimeCpuStatus> _parseCPU(String raw) {
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final List<OneTimeCpuStatus> cpus = [];
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for (var item in raw.split('\n')) {
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if (item == '') break;
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final id = item.split(' ').first;
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final matches = item.replaceFirst(id, '').trim().split(' ');
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cpus.add(OneTimeCpuStatus(
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id,
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int.parse(matches[0]),
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int.parse(matches[1]),
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int.parse(matches[2]),
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int.parse(matches[3]),
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int.parse(matches[4]),
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int.parse(matches[5]),
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int.parse(matches[6])));
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}
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return cpus;
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}
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String _getCPUTemp(List<String> segments) {
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const noMatch = "/sys/class/thermal/thermal_zone*/type";
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final type = segments[0];
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final value = segments[1];
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// Not support to get CPU temperature
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if (value.contains(noMatch) ||
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type.contains(noMatch) ||
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value.isEmpty ||
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type.isEmpty) {
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return '';
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}
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final split = type.split('\n');
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int idx = 0;
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for (var item in split) {
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if (item.contains(cpuTempReg)) {
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break;
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}
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idx++;
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}
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final valueSplited = value.split('\n');
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if (idx >= valueSplited.length) return '';
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final temp = int.tryParse(valueSplited[idx].trim());
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if (temp == null) return '';
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return '${(temp / 1000).toStringAsFixed(1)}°C';
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}
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List<NetSpeedPart> _parseNetSpeed(String raw) {
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final split = raw.split('\n');
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final deviceCount = split.length - 3;
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if (deviceCount < 1) return [];
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final time = int.parse(split[split.length - 1]);
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final results = <NetSpeedPart>[];
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for (int idx = 2; idx < deviceCount; idx++) {
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final data = split[idx].trim().split(':');
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final device = data.first;
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final bytes = data.last.trim().split(' ');
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bytes.removeWhere((element) => element == '');
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final bytesIn = int.parse(bytes.first);
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final bytesOut = int.parse(bytes[8]);
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results.add(NetSpeedPart(device, bytesIn, bytesOut, time));
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}
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return results;
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}
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