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fix: Unable to obtain Windows server information (#963)

Browse Source 
* fix: FormatException: Unexpected extension byte (at offset 8) error

* fix: PowerShell script error repair, Windows data parsing repair

* fix: Unable to obtain network card information

* fix: Unable to obtain system startup time

* fix conversation as resolved.
This commit is contained in:
lxdklp
2025-11-22 19:17:40 +08:00
committed by GitHub
parent ca4e65d7a5
commit 75d1a59e77
12 changed files with 455 additions and 215 deletions
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95
lib/core/extension/ssh_client.dart
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@@ -4,6 +4,7 @@ import 'dart:typed_data';
import 'package:dartssh2/dartssh2.dart';
import 'package:fl_lib/fl_lib.dart';
import 'package:flutter/widgets.dart';
import 'package:server_box/data/helper/ssh_decoder.dart';
import 'package:server_box/data/model/server/system.dart';
import 'package:server_box/data/res/misc.dart';
@@ -170,4 +171,98 @@ extension SSHClientX on SSHClient {
);
return ret.$2;
}
/// Runs a command and decodes output safely with encoding fallback
///
/// [systemType] - The system type (affects encoding choice)
/// Runs a command and safely decodes the result
Future<String> runSafe(
String command, {
SystemType? systemType,
String? context,
}) async {
// Let SSH errors propagate with their original type (e.g., SSHError subclasses)
final result = await run(command);
// Only catch decoding failures and add context
try {
return SSHDecoder.decode(
result,
isWindows: systemType == SystemType.windows,
context: context,
);
} on FormatException catch (e) {
throw Exception(
'Failed to decode command output${context != null ? " [$context]" : ""}: $e',
);
}
}
/// Executes a command with stdin and safely decodes stdout/stderr
Future<(String stdout, String stderr)> execSafe(
void Function(SSHSession session) callback, {
required String entry,
SystemType? systemType,
String? context,
}) async {
final stdoutBuilder = BytesBuilder(copy: false);
final stderrBuilder = BytesBuilder(copy: false);
final stdoutDone = Completer<void>();
final stderrDone = Completer<void>();
final session = await execute(entry);
session.stdout.listen(
(e) {
stdoutBuilder.add(e);
},
onDone: stdoutDone.complete,
onError: stdoutDone.completeError,
);
session.stderr.listen(
(e) {
stderrBuilder.add(e);
},
onDone: stderrDone.complete,
onError: stderrDone.completeError,
);
callback(session);
await stdoutDone.future;
await stderrDone.future;
final stdoutBytes = stdoutBuilder.takeBytes();
final stderrBytes = stderrBuilder.takeBytes();
// Only catch decoding failures, let other errors propagate
String stdout;
try {
stdout = SSHDecoder.decode(
stdoutBytes,
isWindows: systemType == SystemType.windows,
context: context != null ? '$context (stdout)' : 'stdout',
);
} on FormatException catch (e) {
throw Exception(
'Failed to decode stdout${context != null ? " [$context]" : ""}: $e',
);
}
String stderr;
try {
stderr = SSHDecoder.decode(
stderrBytes,
isWindows: systemType == SystemType.windows,
context: context != null ? '$context (stderr)' : 'stderr',
);
} on FormatException catch (e) {
throw Exception(
'Failed to decode stderr${context != null ? " [$context]" : ""}: $e',
);
}
return (stdout, stderr);
}
}

66
lib/data/helper/ssh_decoder.dart Normal file
View File

@@ -0,0 +1,66 @@
import 'dart:convert';
import 'package:fl_lib/fl_lib.dart';
import 'package:flutter_gbk2utf8/flutter_gbk2utf8.dart';
/// Utility class for decoding SSH command output with encoding fallback
class SSHDecoder {
/// Decodes bytes to string with multiple encoding fallback strategies
///
/// Tries in order:
/// 1. UTF-8 (with allowMalformed for lenient parsing)
/// - Windows PowerShell scripts now set UTF-8 output encoding by default
/// 2. GBK (for Windows Chinese systems)
/// - In some cases, Windows will still revert to GBK.
/// - Only attempted if UTF-8 produces replacement characters (<28>)
static String decode(
List<int> bytes, {
bool isWindows = false,
String? context,
}) {
if (bytes.isEmpty) return '';
// Try UTF-8 first with allowMalformed
try {
final result = utf8.decode(bytes, allowMalformed: true);
// Check if there are replacement characters indicating decode failure
// For non-Windows systems, always use UTF-8 result
if (!result.contains('<EFBFBD>') || !isWindows) {
return result;
}
// For Windows with replacement chars, log and try GBK fallback
if (isWindows && result.contains('<EFBFBD>')) {
final contextInfo = context != null ? ' [$context]' : '';
Loggers.app.info('UTF-8 decode has replacement chars$contextInfo, trying GBK fallback');
}
} catch (e) {
final contextInfo = context != null ? ' [$context]' : '';
Loggers.app.warning('UTF-8 decode failed$contextInfo: $e');
}
// For Windows or when UTF-8 has replacement chars, try GBK
try {
return gbk.decode(bytes);
} catch (e) {
final contextInfo = context != null ? ' [$context]' : '';
Loggers.app.warning('GBK decode failed$contextInfo: $e');
// Return empty string if all decoding attempts fail
return '';
}
}
/// Encodes string to bytes for SSH command input
///
/// Uses GBK for Windows, UTF-8 for others
static List<int> encode(String text, {bool isWindows = false}) {
if (isWindows) {
try {
return gbk.encode(text);
} catch (e) {
Loggers.app.warning('GBK encode failed: $e, falling back to UTF-8');
return utf8.encode(text);
}
}
return utf8.encode(text);
}
}

16
lib/data/helper/system_detector.dart
View File

@@ -1,5 +1,6 @@
import 'package:dartssh2/dartssh2.dart';
import 'package:fl_lib/fl_lib.dart';
import 'package:server_box/core/extension/ssh_client.dart';
import 'package:server_box/data/model/server/server_private_info.dart';
import 'package:server_box/data/model/server/system.dart';
@@ -23,7 +24,10 @@ class SystemDetector {
try {
// Try to detect Unix/Linux/BSD systems first (more reliable and doesn't create files)
final unixResult = await client.run('uname -a 2>/dev/null').string;
final unixResult = await client.runSafe(
'uname -a 2>/dev/null',
context: 'uname detection for ${spi.oldId}',
);
if (unixResult.contains('Linux')) {
detectedSystemType = SystemType.linux;
dprint('Detected Linux system type for ${spi.oldId}');
@@ -35,15 +39,19 @@ class SystemDetector {
}
// If uname fails, try to detect Windows systems
final powershellResult = await client.run('ver 2>nul').string;
final powershellResult = await client.runSafe(
'ver 2>nul',
systemType: SystemType.windows,
context: 'ver detection for ${spi.oldId}',
);
if (powershellResult.isNotEmpty &&
(powershellResult.contains('Windows') || powershellResult.contains('NT'))) {
detectedSystemType = SystemType.windows;
dprint('Detected Windows system type for ${spi.oldId}');
return detectedSystemType;
}
} catch (e) {
Loggers.app.warning('System detection failed for ${spi.oldId}: $e');
} catch (e, stackTrace) {
Loggers.app.warning('System detection failed for ${spi.oldId}: $e\n$stackTrace');
}
// Default fallback

53
lib/data/model/app/scripts/cmd_types.dart
View File

@@ -166,25 +166,34 @@ enum WindowsStatusCmdType implements ShellCmdType {
echo('echo ${SystemType.windowsSign}'),
time('[DateTimeOffset]::UtcNow.ToUnixTimeSeconds()'),
/// Get network interface statistics using Windows Performance Counters
/// Get network interface statistics using WMI
///
/// Uses Get-Counter to collect network I/O metrics from all network interfaces:
/// - Collects bytes received and sent per second for all network interfaces
/// Uses WMI Win32_PerfRawData_Tcpip_NetworkInterface for cross-language compatibility:
/// - Takes 2 samples with 1 second interval to calculate rates
/// - Outputs results in JSON format for easy parsing
/// - Counter paths use double backslashes to escape PowerShell string literals
net(
r'Get-Counter -Counter '
r'"\\NetworkInterface(*)\\Bytes Received/sec", '
r'"\\NetworkInterface(*)\\Bytes Sent/sec" '
r'-SampleInterval 1 -MaxSamples 2 | ConvertTo-Json',
r'$s1 = @(Get-WmiObject Win32_PerfRawData_Tcpip_NetworkInterface | '
r'Select-Object Name, BytesReceivedPersec, BytesSentPersec, Timestamp_Sys100NS); '
r'Start-Sleep -Seconds 1; '
r'$s2 = @(Get-WmiObject Win32_PerfRawData_Tcpip_NetworkInterface | '
r'Select-Object Name, BytesReceivedPersec, BytesSentPersec, Timestamp_Sys100NS); '
r'@($s1, $s2) | ConvertTo-Json -Depth 5',
),
sys('(Get-ComputerInfo).OsName'),
cpu(
'Get-WmiObject -Class Win32_Processor | '
'Select-Object Name, LoadPercentage | ConvertTo-Json',
'Select-Object Name, LoadPercentage, NumberOfCores, NumberOfLogicalProcessors | ConvertTo-Json',
),
/// Get system uptime by calculating time since last boot
///
/// Calculates uptime directly in PowerShell to avoid date format parsing issues:
/// - Gets LastBootUpTime from Win32_OperatingSystem
/// - Calculates difference from current time
/// - Returns pre-formatted string: "X days, H:MM" or "H:MM" (if less than 1 day)
/// - Uses ToString('00') for zero-padding to avoid quote escaping issues
uptime(
r"""$up = (Get-Date) - (Get-CimInstance Win32_OperatingSystem).LastBootUpTime; if ($up.Days -gt 0) { "$($up.Days) days, $($up.Hours):$($up.Minutes.ToString('00'))" } else { "$($up.Hours):$($up.Minutes.ToString('00'))" }""",
),
uptime('(Get-CimInstance -ClassName Win32_OperatingSystem).LastBootUpTime'),
conn('(netstat -an | findstr ESTABLISHED | Measure-Object -Line).Count'),
disk(
'Get-WmiObject -Class Win32_LogicalDisk | '
@@ -213,19 +222,19 @@ enum WindowsStatusCmdType implements ShellCmdType {
),
host(r'Write-Output $env:COMPUTERNAME'),
/// Get disk I/O statistics using Windows Performance Counters
/// Get disk I/O statistics using WMI
///
/// Uses Get-Counter to collect disk I/O metrics from all physical disks:
/// Uses WMI Win32_PerfRawData_PerfDisk_PhysicalDisk:
/// - Monitors read and write bytes per second for all physical disks
/// - Takes 2 samples with 1 second interval to calculate I/O rates
/// - Physical disk counters provide hardware-level I/O statistics
/// - Outputs results in JSON format for parsing
/// - Counter names use wildcard (*) to capture all disk instances
/// - Takes 2 samples with 1 second interval to calculate rates
/// - DiskReadBytesPersec and DiskWriteBytesPersec are cumulative counters
diskio(
r'Get-Counter -Counter '
r'"\\PhysicalDisk(*)\\Disk Read Bytes/sec", '
r'"\\PhysicalDisk(*)\\Disk Write Bytes/sec" '
r'-SampleInterval 1 -MaxSamples 2 | ConvertTo-Json',
r'$s1 = @(Get-WmiObject Win32_PerfRawData_PerfDisk_PhysicalDisk | '
r'Select-Object Name, DiskReadBytesPersec, DiskWriteBytesPersec, Timestamp_Sys100NS); '
r'Start-Sleep -Seconds 1; '
r'$s2 = @(Get-WmiObject Win32_PerfRawData_PerfDisk_PhysicalDisk | '
r'Select-Object Name, DiskReadBytesPersec, DiskWriteBytesPersec, Timestamp_Sys100NS); '
r'@($s1, $s2) | ConvertTo-Json -Depth 5',
),
battery(
'Get-WmiObject -Class Win32_Battery | '
@@ -287,7 +296,7 @@ enum WindowsStatusCmdType implements ShellCmdType {
String get separator => ScriptConstants.getCmdSeparator(name);
@override
String get divider => ScriptConstants.getCmdDivider(name);
String get divider => ScriptConstants.getWindowsCmdDivider(name);
@override
CmdTypeSys get sysType => CmdTypeSys.windows;

4
lib/data/model/app/scripts/script_consts.dart
View File

@@ -29,6 +29,9 @@ class ScriptConstants {
/// Generate command-specific divider
static String getCmdDivider(String cmdName) => '\necho ${getCmdSeparator(cmdName)}\n\t';
/// Generate command-specific divider for Windows PowerShell
static String getWindowsCmdDivider(String cmdName) => '\n Write-Host "${getCmdSeparator(cmdName)}"\n ';
/// Parse script output into command-specific map
static Map<String, String> parseScriptOutput(String raw) {
final result = <String, String>{};
@@ -102,6 +105,7 @@ exec 2>/dev/null
# DO NOT delete this file while app is running
\$ErrorActionPreference = "SilentlyContinue"
[Console]::OutputEncoding = [System.Text.Encoding]::UTF8
''';
}

11
lib/data/model/server/cpu.dart
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@@ -6,7 +6,7 @@ import 'package:server_box/data/res/status.dart';
/// Capacity of the FIFO queue
const _kCap = 30;
class Cpus extends TimeSeq<List<SingleCpuCore>> {
class Cpus extends TimeSeq<SingleCpuCore> {
Cpus(super.init1, super.init2);
final Map<String, int> brand = {};
@@ -14,13 +14,20 @@ class Cpus extends TimeSeq<List<SingleCpuCore>> {
@override
void onUpdate() {
_coresCount = now.length;
if (pre.isEmpty || now.isEmpty || pre.length != now.length) {
_totalDelta = 0;
_user = 0;
_sys = 0;
_iowait = 0;
_idle = 0;
return;
}
_totalDelta = now[0].total - pre[0].total;
_user = _getUser();
_sys = _getSys();
_iowait = _getIowait();
_idle = _getIdle();
_updateSpots();
//_updateRange();
}
double usedPercent({int coreIdx = 0}) {

2
lib/data/model/server/disk.dart
View File

@@ -280,7 +280,7 @@ class Disk with EquatableMixin {
];
}
class DiskIO extends TimeSeq<List<DiskIOPiece>> {
class DiskIO extends TimeSeq<DiskIOPiece> {
DiskIO(super.init1, super.init2);
@override

2
lib/data/model/server/net_speed.dart
View File

@@ -18,7 +18,7 @@ class NetSpeedPart extends TimeSeqIface<NetSpeedPart> {
typedef CachedNetVals = ({String sizeIn, String sizeOut, String speedIn, String speedOut});
class NetSpeed extends TimeSeq<List<NetSpeedPart>> {
class NetSpeed extends TimeSeq<NetSpeedPart> {
NetSpeed(super.init1, super.init2);
@override

173
lib/data/model/server/server_status_update_req.dart
View File

@@ -378,18 +378,27 @@ void _parseWindowsCpuData(ServerStatusUpdateReq req, Map<String, String> parsedO
// Windows CPU parsing - JSON format from PowerShell
final cpuRaw = WindowsStatusCmdType.cpu.findInMap(parsedOutput);
if (cpuRaw.isNotEmpty && cpuRaw != 'null' && !cpuRaw.contains('error') && !cpuRaw.contains('Exception')) {
final cpus = WindowsParser.parseCpu(cpuRaw, req.ss);
if (cpus.isNotEmpty) {
req.ss.cpu.update(cpus);
final cpuResult = WindowsParser.parseCpu(cpuRaw, req.ss);
if (cpuResult.cores.isNotEmpty) {
req.ss.cpu.update(cpuResult.cores);
final brandRaw = WindowsStatusCmdType.cpuBrand.findInMap(parsedOutput);
if (brandRaw.isNotEmpty && brandRaw != 'null') {
req.ss.cpu.brand.clear();
final brandLines = brandRaw.trim().split('\n');
final uniqueBrands = <String>{};
for (final line in brandLines) {
final trimmedLine = line.trim();
if (trimmedLine.isNotEmpty) {
uniqueBrands.add(trimmedLine);
}
}
if (uniqueBrands.isNotEmpty) {
final brandName = uniqueBrands.first;
req.ss.cpu.brand[brandName] = cpuResult.coreCount;
}
}
}
}
// Windows CPU brand parsing
final brandRaw = WindowsStatusCmdType.cpuBrand.findInMap(parsedOutput);
if (brandRaw.isNotEmpty && brandRaw != 'null') {
req.ss.cpu.brand.clear();
req.ss.cpu.brand[brandRaw.trim()] = 1;
}
} catch (e, s) {
Loggers.app.warning('Windows CPU parsing failed: $e', s);
}
@@ -427,8 +436,11 @@ void _parseWindowsDiskData(ServerStatusUpdateReq req, Map<String, String> parsed
/// Parse Windows uptime data
void _parseWindowsUptimeData(ServerStatusUpdateReq req, Map<String, String> parsedOutput) {
try {
final uptime = WindowsParser.parseUpTime(WindowsStatusCmdType.uptime.findInMap(parsedOutput));
if (uptime != null) {
final uptimeRaw = WindowsStatusCmdType.uptime.findInMap(parsedOutput);
if (uptimeRaw.isNotEmpty && uptimeRaw != 'null') {
// PowerShell now returns pre-formatted uptime string (e.g., "28 days, 5:00" or "5:00")
// No parsing needed - use it directly
final uptime = uptimeRaw.trim();
req.ss.more[StatusCmdType.uptime] = uptime;
}
} catch (e, s) {
@@ -541,38 +553,36 @@ List<NetSpeedPart> _parseWindowsNetwork(String raw, int currentTime) {
final dynamic jsonData = json.decode(raw);
final List<NetSpeedPart> netParts = [];
// PowerShell Get-Counter returns a structure with CounterSamples
if (jsonData is Map && jsonData.containsKey('CounterSamples')) {
final samples = jsonData['CounterSamples'] as List?;
if (samples != null && samples.length >= 2) {
// We need 2 samples to calculate speed (interval between them)
final Map<String, double> interfaceRx = {};
final Map<String, double> interfaceTx = {};
for (final sample in samples) {
final path = sample['Path']?.toString() ?? '';
final cookedValue = sample['CookedValue'] as num? ?? 0;
if (path.contains('Bytes Received/sec')) {
final interfaceName = _extractInterfaceName(path);
if (interfaceName.isNotEmpty) {
interfaceRx[interfaceName] = cookedValue.toDouble();
}
} else if (path.contains('Bytes Sent/sec')) {
final interfaceName = _extractInterfaceName(path);
if (interfaceName.isNotEmpty) {
interfaceTx[interfaceName] = cookedValue.toDouble();
}
}
}
// Create NetSpeedPart for each interface
for (final interfaceName in interfaceRx.keys) {
final rx = interfaceRx[interfaceName] ?? 0;
final tx = interfaceTx[interfaceName] ?? 0;
if (jsonData is List && jsonData.length >= 2) {
var sample1 = jsonData[jsonData.length - 2];
var sample2 = jsonData[jsonData.length - 1];
if (sample1 is Map && sample1.containsKey('value')) {
sample1 = sample1['value'];
}
if (sample2 is Map && sample2.containsKey('value')) {
sample2 = sample2['value'];
}
if (sample1 is List && sample2 is List && sample1.length == sample2.length) {
for (int i = 0; i < sample1.length; i++) {
final s1 = sample1[i];
final s2 = sample2[i];
final name = s1['Name']?.toString() ?? '';
if (name.isEmpty || name == '_Total') continue;
final rx1 = (s1['BytesReceivedPersec'] as num?)?.toDouble() ?? 0;
final rx2 = (s2['BytesReceivedPersec'] as num?)?.toDouble() ?? 0;
final tx1 = (s1['BytesSentPersec'] as num?)?.toDouble() ?? 0;
final tx2 = (s2['BytesSentPersec'] as num?)?.toDouble() ?? 0;
final time1 = (s1['Timestamp_Sys100NS'] as num?)?.toDouble() ?? 0;
final time2 = (s2['Timestamp_Sys100NS'] as num?)?.toDouble() ?? 0;
final timeDelta = (time2 - time1) / 10000000;
if (timeDelta <= 0) continue;
final rxDelta = rx2 - rx1;
final txDelta = tx2 - tx1;
if (rxDelta < 0 || txDelta < 0) continue;
final rxSpeed = rxDelta / timeDelta;
final txSpeed = txDelta / timeDelta;
netParts.add(
NetSpeedPart(interfaceName, BigInt.from(rx.toInt()), BigInt.from(tx.toInt()), currentTime),
NetSpeedPart(name, BigInt.from(rxSpeed.toInt()), BigInt.from(txSpeed.toInt()), currentTime),
);
}
}
@@ -584,53 +594,45 @@ List<NetSpeedPart> _parseWindowsNetwork(String raw, int currentTime) {
}
}
String _extractInterfaceName(String path) {
// Extract interface name from path like
// "\\Computer\\NetworkInterface(Interface Name)\\..."
final match = RegExp(r'\\NetworkInterface\(([^)]+)\)\\').firstMatch(path);
return match?.group(1) ?? '';
}
List<DiskIOPiece> _parseWindowsDiskIO(String raw, int currentTime) {
try {
final dynamic jsonData = json.decode(raw);
final List<DiskIOPiece> diskParts = [];
// PowerShell Get-Counter returns a structure with CounterSamples
if (jsonData is Map && jsonData.containsKey('CounterSamples')) {
final samples = jsonData['CounterSamples'] as List?;
if (samples != null) {
final Map<String, double> diskReads = {};
final Map<String, double> diskWrites = {};
for (final sample in samples) {
final path = sample['Path']?.toString() ?? '';
final cookedValue = sample['CookedValue'] as num? ?? 0;
if (path.contains('Disk Read Bytes/sec')) {
final diskName = _extractDiskName(path);
if (diskName.isNotEmpty) {
diskReads[diskName] = cookedValue.toDouble();
}
} else if (path.contains('Disk Write Bytes/sec')) {
final diskName = _extractDiskName(path);
if (diskName.isNotEmpty) {
diskWrites[diskName] = cookedValue.toDouble();
}
}
}
// Create DiskIOPiece for each disk - convert bytes to sectors
// (assuming 512 bytes per sector)
for (final diskName in diskReads.keys) {
final readBytes = diskReads[diskName] ?? 0;
final writeBytes = diskWrites[diskName] ?? 0;
final sectorsRead = (readBytes / 512).round();
final sectorsWrite = (writeBytes / 512).round();
if (jsonData is List && jsonData.length >= 2) {
var sample1 = jsonData[jsonData.length - 2];
var sample2 = jsonData[jsonData.length - 1];
if (sample1 is Map && sample1.containsKey('value')) {
sample1 = sample1['value'];
}
if (sample2 is Map && sample2.containsKey('value')) {
sample2 = sample2['value'];
}
if (sample1 is List && sample2 is List && sample1.length == sample2.length) {
for (int i = 0; i < sample1.length; i++) {
final s1 = sample1[i];
final s2 = sample2[i];
final name = s1['Name']?.toString() ?? '';
if (name.isEmpty || name == '_Total') continue;
final read1 = (s1['DiskReadBytesPersec'] as num?)?.toDouble() ?? 0;
final read2 = (s2['DiskReadBytesPersec'] as num?)?.toDouble() ?? 0;
final write1 = (s1['DiskWriteBytesPersec'] as num?)?.toDouble() ?? 0;
final write2 = (s2['DiskWriteBytesPersec'] as num?)?.toDouble() ?? 0;
final time1 = (s1['Timestamp_Sys100NS'] as num?)?.toDouble() ?? 0;
final time2 = (s2['Timestamp_Sys100NS'] as num?)?.toDouble() ?? 0;
final timeDelta = (time2 - time1) / 10000000;
if (timeDelta <= 0) continue;
final readDelta = read2 - read1;
final writeDelta = write2 - write1;
if (readDelta < 0 || writeDelta < 0) continue;
final readSpeed = readDelta / timeDelta;
final writeSpeed = writeDelta / timeDelta;
final sectorsRead = (readSpeed / 512).round();
final sectorsWrite = (writeSpeed / 512).round();
diskParts.add(
DiskIOPiece(
dev: diskName,
dev: name,
sectorsRead: sectorsRead,
sectorsWrite: sectorsWrite,
time: currentTime,
@@ -646,13 +648,6 @@ List<DiskIOPiece> _parseWindowsDiskIO(String raw, int currentTime) {
}
}
String _extractDiskName(String path) {
// Extract disk name from path like
// "\\Computer\\PhysicalDisk(Disk Name)\\..."
final match = RegExp(r'\\PhysicalDisk\(([^)]+)\)\\').firstMatch(path);
return match?.group(1) ?? '';
}
void _parseWindowsTemperatures(Temperatures temps, String raw) {
try {
// Handle error output

26
lib/data/model/server/time_seq.dart
View File

@@ -37,27 +37,39 @@ class Fifo<T> extends ListBase<T> {
}
}
abstract class TimeSeq<T extends List<TimeSeqIface>> extends Fifo<T> {
abstract class TimeSeq<T extends TimeSeqIface<T>> extends Fifo<List<T>> {
/// Due to the design, at least two elements are required, otherwise [pre] /
/// [now] will throw.
TimeSeq(T init1, T init2, {super.capacity}) : super(list: [init1, init2]);
TimeSeq(List<T> init1, List<T> init2, {super.capacity}) : super(list: [init1, init2]);
T get pre {
List<T> get pre {
return _list[length - 2];
}
T get now {
List<T> get now {
return _list[length - 1];
}
void onUpdate();
void update(T new_) {
void update(List<T> new_) {
add(new_);
if (pre.length != now.length) {
pre.removeWhere((e) => now.any((el) => e.same(el)));
pre.addAll(now.where((e) => pre.every((el) => !e.same(el))));
final previous = pre.toList(growable: false);
final remaining = previous.toList(growable: true);
final aligned = <T>[];
for (final current in now) {
final matchIndex = remaining.indexWhere((item) => item.same(current));
if (matchIndex >= 0) {
aligned.add(remaining.removeAt(matchIndex));
} else {
aligned.add(current);
}
}
_list[length - 2] = aligned;
}
onUpdate();

149
lib/data/model/server/windows_parser.dart
View File

@@ -7,6 +7,13 @@ import 'package:server_box/data/model/server/disk.dart';
import 'package:server_box/data/model/server/memory.dart';
import 'package:server_box/data/model/server/server.dart';
/// Windows CPU parse result
class WindowsCpuResult {
final List<SingleCpuCore> cores;
final int coreCount;
const WindowsCpuResult(this.cores, this.coreCount);
}
/// Windows-specific status parsing utilities
///
/// This module handles parsing of Windows PowerShell command outputs
@@ -94,30 +101,75 @@ class WindowsParser {
}
/// Parse Windows CPU information from PowerShell output
static List<SingleCpuCore> parseCpu(String raw, ServerStatus serverStatus) {
/// Returns WindowsCpuResult containing CPU cores and total core count
static WindowsCpuResult parseCpu(String raw, ServerStatus serverStatus) {
try {
final dynamic jsonData = json.decode(raw);
final List<SingleCpuCore> cpus = [];
int totalCoreCount = 1;
if (jsonData is List) {
for (int i = 0; i < jsonData.length; i++) {
final cpu = jsonData[i];
final loadPercentage = cpu['LoadPercentage'] ?? 0;
final usage = loadPercentage as int;
// Multiple physical processors
totalCoreCount = 0; // Reset to sum up
var logicalProcessorOffset = 0;
final prevCpus = serverStatus.cpu.now;
for (int procIdx = 0; procIdx < jsonData.length; procIdx++) {
final processor = jsonData[procIdx];
final loadPercentage = (processor['LoadPercentage'] as num?) ?? 0;
final numberOfCores = (processor['NumberOfCores'] as int?) ?? 1;
final numberOfLogicalProcessors = (processor['NumberOfLogicalProcessors'] as int?) ?? numberOfCores;
totalCoreCount += numberOfCores;
final usage = loadPercentage.toInt();
final idle = 100 - usage;
// Get previous CPU data to calculate cumulative values
final prevCpus = serverStatus.cpu.now;
final prevCpu = i < prevCpus.length ? prevCpus[i] : null;
// Create a SingleCpuCore entry for each logical processor
// Windows only reports overall CPU load, so we distribute it evenly
for (int i = 0; i < numberOfLogicalProcessors; i++) {
final coreId = logicalProcessorOffset + i;
// Skip summary entry at index 0 when looking up previous samples
final prevIndex = coreId + 1;
final prevCpu = prevIndex < prevCpus.length ? prevCpus[prevIndex] : null;
// LIMITATION: Windows CPU counters approach
// PowerShell provides LoadPercentage as instantaneous percentage, not cumulative time.
// We simulate cumulative counters by adding current percentages to previous totals.
// This approach has limitations:
// 1. Not as accurate as true cumulative time counters (Linux /proc/stat)
// 2. May drift over time with variable polling intervals
// 3. Results depend on consistent polling frequency
// However, this allows compatibility with existing delta-based CPU calculation logic.
// LIMITATION: Windows CPU counters approach
// PowerShell provides LoadPercentage as instantaneous percentage, not cumulative time.
// We simulate cumulative counters by adding current percentages to previous totals.
// Additionally, Windows only provides overall CPU load, not per-core load.
// We distribute the load evenly across all logical processors.
final newUser = (prevCpu?.user ?? 0) + usage;
final newIdle = (prevCpu?.idle ?? 0) + idle;
cpus.add(
SingleCpuCore(
'cpu$coreId',
newUser, // cumulative user time
0, // sys (not available)
0, // nice (not available)
newIdle, // cumulative idle time
0, // iowait (not available)
0, // irq (not available)
0, // softirq (not available)
),
);
}
logicalProcessorOffset += numberOfLogicalProcessors;
}
} else if (jsonData is Map) {
// Single physical processor
final loadPercentage = (jsonData['LoadPercentage'] as num?) ?? 0;
final numberOfCores = (jsonData['NumberOfCores'] as int?) ?? 1;
final numberOfLogicalProcessors = (jsonData['NumberOfLogicalProcessors'] as int?) ?? numberOfCores;
totalCoreCount = numberOfCores;
final usage = loadPercentage.toInt();
final idle = 100 - usage;
// Create a SingleCpuCore entry for each logical processor
final prevCpus = serverStatus.cpu.now;
for (int i = 0; i < numberOfLogicalProcessors; i++) {
// Skip summary entry at index 0 when looking up previous samples
final prevIndex = i + 1;
final prevCpu = prevIndex < prevCpus.length ? prevCpus[prevIndex] : null;
// LIMITATION: See comment above for Windows CPU counter limitations
final newUser = (prevCpu?.user ?? 0) + usage;
final newIdle = (prevCpu?.idle ?? 0) + idle;
@@ -125,46 +177,43 @@ class WindowsParser {
SingleCpuCore(
'cpu$i',
newUser, // cumulative user time
0, // sys (not available)
0, // nice (not available)
0, // sys
0, // nice
newIdle, // cumulative idle time
0, // iowait (not available)
0, // irq (not available)
0, // softirq (not available)
0, // iowait
0, // irq
0, // softirq
),
);
}
} else if (jsonData is Map) {
// Single CPU core
final loadPercentage = jsonData['LoadPercentage'] ?? 0;
final usage = loadPercentage as int;
final idle = 100 - usage;
// Get previous CPU data to calculate cumulative values
final prevCpus = serverStatus.cpu.now;
final prevCpu = prevCpus.isNotEmpty ? prevCpus[0] : null;
// LIMITATION: See comment above for Windows CPU counter limitations
final newUser = (prevCpu?.user ?? 0) + usage;
final newIdle = (prevCpu?.idle ?? 0) + idle;
cpus.add(
SingleCpuCore(
'cpu0',
newUser, // cumulative user time
0, // sys
0, // nice
newIdle, // cumulative idle time
0, // iowait
0, // irq
0, // softirq
),
);
}
return cpus;
} catch (e) {
return [];
// Add a summary entry at the beginning (like Linux 'cpu' line)
// This is the aggregate of all logical processors
if (cpus.isNotEmpty) {
int totalUser = 0;
int totalIdle = 0;
for (final core in cpus) {
totalUser += core.user;
totalIdle += core.idle;
}
// Insert at the beginning with ID 'cpu' (matching Linux format)
cpus.insert(0, SingleCpuCore(
'cpu', // Summary entry, like Linux
totalUser,
0,
0,
totalIdle,
0,
0,
0,
));
}
return WindowsCpuResult(cpus, totalCoreCount);
} catch (e, s) {
Loggers.app.warning('Windows CPU parsing failed: $e', s);
return WindowsCpuResult([], 1);
}
}

73
lib/data/provider/server/single.dart
View File

@@ -1,15 +1,14 @@
import 'dart:async';
import 'dart:convert';
import 'package:computer/computer.dart';
import 'package:dartssh2/dartssh2.dart';
import 'package:fl_lib/fl_lib.dart';
import 'package:flutter_gbk2utf8/flutter_gbk2utf8.dart';
import 'package:freezed_annotation/freezed_annotation.dart';
import 'package:riverpod_annotation/riverpod_annotation.dart';
import 'package:server_box/core/extension/ssh_client.dart';
import 'package:server_box/core/utils/server.dart';
import 'package:server_box/core/utils/ssh_auth.dart';
import 'package:server_box/data/helper/ssh_decoder.dart';
import 'package:server_box/data/helper/system_detector.dart';
import 'package:server_box/data/model/app/error.dart';
import 'package:server_box/data/model/app/scripts/script_consts.dart';
@@ -213,7 +212,9 @@ class ServerNotifier extends _$ServerNotifier {
final newStatus = state.status..system = detectedSystemType;
updateStatus(newStatus);
final (_, writeScriptResult) = await state.client!.exec(
Loggers.app.info('Writing script for ${spi.name} (${detectedSystemType.name})');
final (stdoutResult, writeScriptResult) = await state.client!.execSafe(
(session) async {
final scriptRaw = ShellFuncManager.allScript(
spi.custom?.cmds,
@@ -228,10 +229,22 @@ class ServerNotifier extends _$ServerNotifier {
systemType: detectedSystemType,
customDir: spi.custom?.scriptDir,
),
systemType: detectedSystemType,
context: 'WriteScript<${spi.name}>',
);
if (writeScriptResult.isNotEmpty && detectedSystemType != SystemType.windows) {
ShellFuncManager.switchScriptDir(spi.id, systemType: detectedSystemType);
throw writeScriptResult;
if (stdoutResult.isNotEmpty) {
Loggers.app.info('Script write stdout for ${spi.name}: $stdoutResult');
}
if (writeScriptResult.isNotEmpty) {
Loggers.app.warning('Script write stderr for ${spi.name}: $writeScriptResult');
if (detectedSystemType != SystemType.windows) {
ShellFuncManager.switchScriptDir(spi.id, systemType: detectedSystemType);
throw writeScriptResult;
}
} else {
Loggers.app.info('Script written successfully for ${spi.name}');
}
} on SSHAuthAbortError catch (e) {
TryLimiter.inc(sid);
@@ -278,43 +291,25 @@ class ServerNotifier extends _$ServerNotifier {
String? raw;
try {
final execResult = await state.client?.run(
ShellFunc.status.exec(spi.id, systemType: state.status.system, customDir: spi.custom?.scriptDir),
);
final statusCmd = ShellFunc.status.exec(spi.id, systemType: state.status.system, customDir: spi.custom?.scriptDir);
Loggers.app.info('Running status command for ${spi.name} (${state.status.system.name}): $statusCmd');
final execResult = await state.client?.run(statusCmd);
if (execResult != null) {
String? rawStr;
bool needGbk = false;
try {
rawStr = utf8.decode(execResult, allowMalformed: true);
// If there are unparseable characters, try fallback to GBK decoding
if (rawStr.contains('<EFBFBD>')) {
Loggers.app.warning('UTF8 decoding failed, use GBK decoding');
needGbk = true;
}
} catch (e) {
Loggers.app.warning('UTF8 decoding failed, use GBK decoding', e);
needGbk = true;
}
if (needGbk) {
try {
rawStr = gbk.decode(execResult);
} catch (e2) {
Loggers.app.warning('GBK decoding failed', e2);
rawStr = null;
}
}
if (rawStr == null) {
Loggers.app.warning('Decoding failed, execResult: $execResult');
}
raw = rawStr;
raw = SSHDecoder.decode(
execResult,
isWindows: state.status.system == SystemType.windows,
context: 'GetStatus<${spi.name}>',
);
Loggers.app.info('Status response length for ${spi.name}: ${raw.length} bytes');
} else {
raw = execResult.toString();
raw = '';
Loggers.app.warning('No status result from ${spi.name}');
}
if (raw == null || raw.isEmpty) {
if (raw.isEmpty) {
TryLimiter.inc(sid);
final newStatus = state.status
..err = SSHErr(type: SSHErrType.segements, message: 'decode or split failed, raw:\n$raw');
..err = SSHErr(type: SSHErrType.segements, message: 'Empty response from server');
updateStatus(newStatus);
updateConnection(ServerConn.failed);
@@ -324,7 +319,7 @@ class ServerNotifier extends _$ServerNotifier {
}
segments = raw.split(ScriptConstants.separator).map((e) => e.trim()).toList();
if (raw.isEmpty || segments.isEmpty) {
if (segments.isEmpty) {
if (Stores.setting.keepStatusWhenErr.fetch()) {
// Keep previous server status when error occurs
if (state.conn != ServerConn.failed && state.status.more.isNotEmpty) {
@@ -333,7 +328,7 @@ class ServerNotifier extends _$ServerNotifier {
}
TryLimiter.inc(sid);
final newStatus = state.status
..err = SSHErr(type: SSHErrType.segements, message: 'Seperate segments failed, raw:\n$raw');
..err = SSHErr(type: SSHErrType.segements, message: 'Separate segments failed, raw:\n$raw');
updateStatus(newStatus);
updateConnection(ServerConn.failed);