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smart_shutdown.ps1
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234
smart_shutdown.ps1
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#Requires -Version 5.1
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#Requires -RunAsAdministrator
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<#
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.SYNOPSIS
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一个智能网络监控脚本，当检测到与目标IP的网络持续中断后，会自动关闭计算机。
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.DESCRIPTION
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该脚本会定期测试与指定目标IP的网络连通性。
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如果在设定的“监控窗口”时间内连接持续失败，脚本将启动一个可取消的关机倒计时。
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如果在倒计时期间网络恢复，关机将被中止。
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所有操作都会被记录在日志文件中。
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#>
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# ==================== 配置参数 ====================
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# 监控的目标IP地址
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[string]$TargetIP = "192.168.3.3"
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# 正常监控时的ping间隔（秒）
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[int]$NormalPingInterval = 15
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# 监控窗口时长（秒） - 在此期间持续失败则触发关机
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[int]$MonitorWindowSeconds = 60
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# 关机倒计时时长（秒）
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[int]$ShutdownCountdown = 60
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# 关机倒计时阶段的ping间隔（秒）
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[int]$CountdownPingInterval = 3
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# ping超时时间（秒）
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[int]$PingTimeout = 3
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# 日志配置
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[string]$LogDirectory = Join-Path -Path $PSScriptRoot -ChildPath "logs"
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[string]$LogFile = Join-Path -Path $LogDirectory -ChildPath "network_monitor_$(Get-Date -Format 'yyyyMMdd').log"
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[int]$MaxLogDays = 30
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# =================================================
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# --- 函数定义 ---
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# 日志写入函数
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function Write-Log {
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param(
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[Parameter(Mandatory=$true)]
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[ValidateSet("INFO", "SUCCESS", "FAIL", "WARN", "CRITICAL", "DEBUG")]
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[string]$Level,
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[Parameter(Mandatory=$true)]
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[string]$Message
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)
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$logTimestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
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$logEntry = "[$logTimestamp] [$Level] $Message"
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# 尝试写入日志文件
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try {
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if (-not (Test-Path -Path $LogDirectory)) {
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New-Item -Path $LogDirectory -ItemType Directory -ErrorAction Stop | Out-Null
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}
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Add-Content -Path $LogFile -Value $logEntry -ErrorAction Stop
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}
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catch {
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Write-Host "[$logTimestamp] [CRITICAL] 日志文件写入失败！请检查权限或磁盘空间。" -ForegroundColor Red
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}
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# 根据日志级别在控制台输出不同颜色的信息
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switch ($Level) {
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"SUCCESS" { Write-Host $logEntry -ForegroundColor Green }
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"FAIL" { Write-Host $logEntry -ForegroundColor Red }
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"WARN" { Write-Host $logEntry -ForegroundColor Yellow }
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"CRITICAL" { Write-Host $logEntry -ForegroundColor DarkRed }
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default { Write-Host $logEntry }
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}
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}
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# 获取本机的最佳IP地址
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function Get-LocalIP {
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param($TargetIP)
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try {
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# 尝试寻找与目标IP在同一个子网的本机IP地址
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$targetSubnet = ($TargetIP.Split('.')[0..2]) -join '.'
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$ip = Get-NetIPAddress -AddressFamily IPv4 -AddressState Preferred | Where-Object { $_.IPAddress -like "$targetSubnet.*" } | Select-Object -First 1 -ExpandProperty IPAddress
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if ($ip) { return $ip }
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# 如果找不到，则返回任意一个非环回的私有IP地址
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$ip = Get-NetIPAddress -AddressFamily IPv4 -AddressState Preferred | Where-Object { $_.IPAddress -notlike "127.0.0.1" -and $_.InterfaceAlias -notlike "Loopback*" } | Select-Object -First 1 -ExpandProperty IPAddress
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return $ip
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}
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catch {
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return "未知"
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}
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}
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# --- 脚本主逻辑 ---
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# 清理旧日志
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if (Test-Path -Path $LogDirectory) {
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Get-ChildItem -Path $LogDirectory -Filter "*.log" | Where-Object { $_.LastWriteTime -lt (Get-Date).AddDays(-$MaxLogDays) } | Remove-Item
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}
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# 初始化
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Clear-Host
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$localIP = Get-LocalIP -TargetIP $TargetIP
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Write-Log -Level "INFO" -Message "========== 脚本启动 =========="
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Write-Log -Level "INFO" -Message "本机IP: $localIP"
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Write-Log -Level "INFO" -Message "监控目标: $TargetIP"
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Write-Log -Level "INFO" -Message "监控窗口: ${MonitorWindowSeconds}秒"
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Write-Log -Level "INFO" -Message "关机倒计时: ${ShutdownCountdown}秒"
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Write-Log -Level "INFO" -Message "日志文件: $LogFile"
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Write-Log -Level "INFO" -Message "脚本已启动，按 Ctrl+C 退出..."
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Write-Host "========================================"
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# 主循环
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$failureStartTime = $null
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$normalStatusCounter = 0 # 正常状态计数器，用于定期记录正常运行日志
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$normalStatusLogInterval = 24 # 每24次正常检测记录一次日志（约6分钟）
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while ($true) {# 测试网络连接
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try {
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# 使用兼容性更好的ping方法
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$pingResult = Test-Connection -ComputerName $TargetIP -Count 1 -Quiet -ErrorAction SilentlyContinue
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$isOnline = $pingResult
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} catch {
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Write-Log -Level "FAIL" -Message "网络测试出现异常: $($_.Exception.Message)"
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$isOnline = $false
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} if ($isOnline) {
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if ($failureStartTime) {
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Write-Log -Level "SUCCESS" -Message "网络连接已恢复。"
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Write-Host "[OK] 网络连接已恢复，重置监控窗口" -ForegroundColor Green
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$failureStartTime = $null # 重置失败计时器
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$normalStatusCounter = 0 # 重置正常状态计数器
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} else {
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Write-Host "[OK] 网络连接正常" -ForegroundColor Green
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# 正常连接时减少日志频率，只定期记录
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$normalStatusCounter++
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if ($normalStatusCounter -ge $normalStatusLogInterval) {
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Write-Log -Level "INFO" -Message "网络连接持续正常（已检测 $normalStatusCounter 次）"
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$normalStatusCounter = 0 # 重置计数器
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}
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}
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# 只在控制台显示等待信息，不写入日志文件
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Write-Host "等待 ${NormalPingInterval}秒后继续监控..." -ForegroundColor Cyan
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Start-Sleep -Seconds $NormalPingInterval
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} else {
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# 如果网络不通
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Write-Log -Level "FAIL" -Message "Ping失败 - 目标: $TargetIP"
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if (-not $failureStartTime) {
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# 记录首次失败的时间
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$failureStartTime = Get-Date
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Write-Log -Level "WARN" -Message "网络首次中断，开始进入监控窗口计时。"
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} # 计算网络已中断的时间
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$failureDuration = (New-TimeSpan -Start $failureStartTime -End (Get-Date)).TotalSeconds
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Write-Log -Level "INFO" -Message "网络已持续中断 $([math]::Round($failureDuration)) / ${MonitorWindowSeconds} 秒。"
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# 显示详细状态
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$remainingTime = $MonitorWindowSeconds - [math]::Round($failureDuration)
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Write-Host "监控状态 - 已中断: $([math]::Round($failureDuration))/${MonitorWindowSeconds}秒，剩余: ${remainingTime}秒" -ForegroundColor Yellow
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if ($failureDuration -ge $MonitorWindowSeconds) {
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# 持续失败时间超过监控窗口，开始关机倒计时
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Write-Log -Level "CRITICAL" -Message "网络持续中断已超过 ${MonitorWindowSeconds} 秒，开始关机流程。"
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Write-Host "========================================" -ForegroundColor Yellow
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$shutdownCancelled = $false
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$countdownEndTime = (Get-Date).AddSeconds($ShutdownCountdown)
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while ((Get-Date) -lt $countdownEndTime -and -not $shutdownCancelled) {
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$remainingSeconds = [math]::Ceiling(($countdownEndTime - (Get-Date)).TotalSeconds)
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if ($remainingSeconds -le 0) { break }
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Write-Log -Level "WARN" -Message "距离关机还有 $remainingSeconds 秒... 正在快速检测网络。"
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Write-Host "----------------------------------------" -ForegroundColor Yellow
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Write-Host "距离关机还有 $remainingSeconds 秒..." -ForegroundColor Yellow
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Write-Host "正在快速检测网络连接... 按任意键可手动取消关机" -ForegroundColor Yellow # 在倒计时中再次检测网络
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try {
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if (Test-Connection -ComputerName $TargetIP -Count 1 -Quiet -ErrorAction SilentlyContinue) {
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Write-Log -Level "SUCCESS" -Message "网络在倒计时期间恢复！取消关机。"
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Write-Host "========================================" -ForegroundColor Green
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Write-Host "[OK] 网络连接已恢复！取消关机操作" -ForegroundColor Green
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Write-Host "========================================" -ForegroundColor Green
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$failureStartTime = $null
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$shutdownCancelled = $true
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break
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} else {
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Write-Host "[X] 网络仍然中断" -ForegroundColor Red
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}
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}
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catch {
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Write-Log -Level "WARN" -Message "倒计时期间网络测试出现异常: $($_.Exception.Message)"
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Write-Host "[X] 网络测试异常" -ForegroundColor Red
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}
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# 检查是否有按键输入（手动取消）
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$timeout = $CountdownPingInterval
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$startTime = Get-Date
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while (((Get-Date) - $startTime).TotalSeconds -lt $timeout -and -not $shutdownCancelled) {
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if ([Console]::KeyAvailable) {
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$null = [Console]::ReadKey($true) # 读取按键但不使用
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Write-Log -Level "WARN" -Message "用户手动取消了关机操作" Write-Host ""
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Write-Host "========================================" -ForegroundColor Cyan
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Write-Host "[INFO] 用户已手动取消关机，返回监控模式" -ForegroundColor Cyan
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Write-Host "========================================" -ForegroundColor Cyan
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$failureStartTime = $null
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$shutdownCancelled = $true
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break }
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Start-Sleep -Milliseconds 100
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}
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}
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if (-not $shutdownCancelled) {
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Write-Log -Level "CRITICAL" -Message "关机倒计时完成，执行系统关机命令。"
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try {
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# 取消注释下一行以启用实际关机
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# Stop-Computer -Force
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Write-Host "模拟关机：Stop-Computer -Force （为防止意外，此行已注释）" -ForegroundColor Red
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Write-Log -Level "CRITICAL" -Message "关机命令已执行（模拟模式）。"
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}
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catch {
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Write-Log -Level "CRITICAL" -Message "关机命令执行失败: $($_.Exception.Message)"
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}
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# 脚本执行完关机命令后可以退出
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exit
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}
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} else {
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# 在监控窗口期内，继续等待
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Write-Log -Level "INFO" -Message "等待 ${NormalPingInterval}秒后继续..."
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Start-Sleep -Seconds $NormalPingInterval
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}
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}
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}
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