587 lines
20 KiB
PowerShell
587 lines
20 KiB
PowerShell
<#
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.SYNOPSIS
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Клиент Security Alert Center для RDP-login-monitor.
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.DESCRIPTION
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Dot-source после login_monitor.settings.ps1 и функции Write-Log.
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Ожидает: $UseSAC, $SacUrl, $SacApiKey, $ScriptVersion, $script:InstallRoot.
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Release: 1.2.12-SAC (fix null+JSON body from pipeline; no ConvertFrom-Json on ingest).
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#>
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function Test-SacIngestAcceptedStatus {
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param([int]$StatusCode)
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return ($StatusCode -in 201, 409, 202)
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}
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function Complete-SacIngestSuccess {
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param(
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[string]$EventId,
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[string]$EventType,
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[int]$StatusCode
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)
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Remove-SacSpoolFile -EventId $EventId
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Reset-SacFailCount
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if ($StatusCode -eq 409) {
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Write-SacLog "SAC: duplicate OK (HTTP 409) event_id=$EventId type=$EventType"
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} else {
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Write-SacLog "SAC: accepted event_id=$EventId type=$EventType (HTTP $StatusCode)"
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}
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}
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function Get-SacUtf8Bytes {
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param([Parameter(Mandatory = $true)][string]$Text)
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$t = Get-SacSingleString -Value $Text -Label 'request body'
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if ($t.StartsWith([char]0xFEFF)) { $t = $t.Substring(1) }
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# PowerShell иногда склеивает $null и JSON в "null{...}" — ломает FastAPI json parser
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if ($t.Length -gt 5 -and $t.StartsWith('null', [System.StringComparison]::Ordinal) -and $t[4] -eq '{') {
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Write-SacLog 'WARN: SAC stripped accidental null prefix before JSON body'
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$t = $t.Substring(4)
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}
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return (New-Object System.Text.UTF8Encoding $false).GetBytes($t)
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}
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function Write-SacLog {
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param([string]$Message)
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if (Get-Command Write-Log -ErrorAction SilentlyContinue) {
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[void](Write-Log $Message)
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} else {
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Write-Host $Message
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}
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}
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function Get-SacSingleString {
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param($Value, [string]$Label)
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if ($null -eq $Value) { return '' }
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if ($Value -is [string]) { return $Value }
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if ($Value -is [System.Array]) {
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$parts = @($Value | Where-Object { $null -ne $_ -and $_ -is [string] -and $_.Length -gt 0 })
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if ($parts.Count -gt 0) {
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if ($parts.Count -gt 1) {
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Write-SacLog "WARN: SAC $Label had $($parts.Count) string parts; using last"
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}
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return [string]$parts[-1]
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}
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}
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return [string]$Value
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}
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function Get-SacNormalizedMode {
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$m = if ($null -ne $UseSAC) { [string]$UseSAC } else { 'off' }
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return $m.Trim().ToLowerInvariant()
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}
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function Test-SacConfigured {
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return (-not [string]::IsNullOrWhiteSpace($SacUrl)) -and (-not [string]::IsNullOrWhiteSpace($SacApiKey))
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}
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function Get-SacBaseUrl {
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if ([string]::IsNullOrWhiteSpace($SacUrl)) { return $null }
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$url = $SacUrl.Trim().TrimEnd('/')
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if ($url -match '/api/v1/events$') {
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$url = $url -replace '/api/v1/events$', ''
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}
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return $url.TrimEnd('/')
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}
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function Get-SacIngestUrl {
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$base = Get-SacBaseUrl
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if ([string]::IsNullOrWhiteSpace($base)) { return $null }
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return "$base/api/v1/events"
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}
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function Get-SacSpoolDirResolved {
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if (-not [string]::IsNullOrWhiteSpace($SacSpoolDir)) {
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return $SacSpoolDir.Trim()
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}
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return (Join-Path $script:InstallRoot 'sac-spool')
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}
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function Get-SacAgentIdFileResolved {
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if (-not [string]::IsNullOrWhiteSpace($SacAgentIdFile)) {
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return $SacAgentIdFile.Trim()
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}
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return (Join-Path $script:InstallRoot 'agent_instance_id')
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}
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function Get-SacFailCountFileResolved {
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return (Join-Path $script:InstallRoot 'sac-fail.count')
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}
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function Get-SacAgentInstanceId {
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$idFile = Get-SacAgentIdFileResolved
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$dir = Split-Path -Parent $idFile
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if (-not (Test-Path -LiteralPath $dir)) {
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New-Item -ItemType Directory -Path $dir -Force | Out-Null
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}
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if (Test-Path -LiteralPath $idFile) {
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$existing = (Get-Content -LiteralPath $idFile -TotalCount 1 -ErrorAction SilentlyContinue)
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if (-not [string]::IsNullOrWhiteSpace($existing)) {
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return $existing.Trim()
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}
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}
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$newId = [guid]::NewGuid().ToString()
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try {
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Set-Content -LiteralPath $idFile -Value $newId -Encoding UTF8 -NoNewline
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} catch { }
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return $newId
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}
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function Get-SacOccurredAtIso {
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return [DateTimeOffset]::Now.ToString('yyyy-MM-ddTHH:mm:ss.fffK')
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}
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function Convert-AnyToJsonSerializable {
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param($Value)
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if ($null -eq $Value) { return $null }
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if ($Value -is [string] -or $Value -is [bool] -or $Value -is [int] -or $Value -is [long] -or $Value -is [double] -or $Value -is [decimal]) {
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return $Value
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}
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if ($Value -is [hashtable] -or $Value -is [System.Collections.IDictionary]) {
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$out = @{}
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foreach ($key in $Value.Keys) {
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$out[[string]$key] = Convert-AnyToJsonSerializable $Value[$key]
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}
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return $out
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}
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if ($Value -is [System.Collections.IEnumerable]) {
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$list = New-Object System.Collections.Generic.List[object]
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foreach ($item in $Value) {
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$list.Add((Convert-AnyToJsonSerializable $item)) | Out-Null
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}
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return $list
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}
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return [string]$Value
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}
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function ConvertTo-SacJsonText {
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param([Parameter(Mandatory = $true)]$Payload)
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$serializable = Convert-AnyToJsonSerializable $Payload
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try {
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Add-Type -AssemblyName System.Web.Extensions -ErrorAction Stop
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$ser = New-Object System.Web.Script.Serialization.JavaScriptSerializer
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$ser.MaxJsonLength = 16777216
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$ser.RecursionLimit = 32
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return $ser.Serialize($serializable)
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} catch {
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Write-SacLog "WARN: JavaScriptSerializer unavailable, fallback ConvertTo-Json ($($_.Exception.Message))"
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return ($serializable | ConvertTo-Json -Depth 12 -Compress)
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}
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}
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function Get-SacCategoryForType {
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param([string]$EventType)
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if ($EventType -match '^agent\.') { return 'agent' }
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if ($EventType -match '^(ssh\.|auth\.|rdp\.)') { return 'auth' }
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if ($EventType -match '^privilege\.') { return 'privilege' }
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if ($EventType -match '^session\.') { return 'session' }
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if ($EventType -match '^report\.') { return 'report' }
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if ($EventType -match '^rdg\.') { return 'network' }
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return 'agent'
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}
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function Limit-SacString {
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param(
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[string]$Text,
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[int]$MaxLen,
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[string]$Label
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)
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if ([string]::IsNullOrEmpty($Text)) { return '' }
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if ($Text.Length -le $MaxLen) { return $Text }
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Write-SacLog "WARN: SAC truncate $Label $($Text.Length) -> $MaxLen chars (event schema limit)"
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return $Text.Substring(0, $MaxLen)
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}
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function Get-SacHttpErrorBody {
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param($ErrorRecord)
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if ($null -ne $ErrorRecord -and $null -ne $ErrorRecord.ErrorDetails -and -not [string]::IsNullOrWhiteSpace($ErrorRecord.ErrorDetails.Message)) {
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return [string]$ErrorRecord.ErrorDetails.Message
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}
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$ex = if ($null -ne $ErrorRecord) { $ErrorRecord.Exception } else { $null }
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try {
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if ($null -eq $ex -or $null -eq $ex.Response) { return '' }
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$stream = $ex.Response.GetResponseStream()
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if ($null -eq $stream) { return '' }
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$reader = New-Object System.IO.StreamReader($stream)
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$body = $reader.ReadToEnd()
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$reader.Close()
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return $body
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} catch {
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return ''
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}
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}
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function New-SacEventPayload {
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param(
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[Parameter(Mandatory = $true)][string]$EventType,
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[Parameter(Mandatory = $true)][string]$Severity,
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[Parameter(Mandatory = $true)][string]$Title,
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[Parameter(Mandatory = $true)][string]$Summary,
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[hashtable]$Details = $null
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)
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$Title = Limit-SacString -Text $Title -MaxLen 256 -Label 'title'
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$Summary = Limit-SacString -Text $Summary -MaxLen 8192 -Label 'summary'
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$payload = [ordered]@{
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schema_version = '1.0'
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event_id = [guid]::NewGuid().ToString()
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occurred_at = (Get-SacOccurredAtIso)
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source = [ordered]@{
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product = 'rdp-login-monitor'
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product_version = if ($ScriptVersion) { [string]$ScriptVersion } else { 'unknown' }
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agent_instance_id = Get-SacAgentInstanceId
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}
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host = [ordered]@{
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hostname = $env:COMPUTERNAME
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os_family = 'windows'
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}
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category = (Get-SacCategoryForType -EventType $EventType)
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type = $EventType
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severity = $Severity
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title = $Title
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summary = $Summary
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}
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if ($null -ne $Details -and $Details.Count -gt 0) {
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$payload.details = $Details
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}
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return $payload
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}
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function Get-SacFailCount {
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$f = Get-SacFailCountFileResolved
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if (-not (Test-Path -LiteralPath $f)) { return 0 }
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$raw = (Get-Content -LiteralPath $f -TotalCount 1 -ErrorAction SilentlyContinue) -replace '\D', ''
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if ([string]::IsNullOrWhiteSpace($raw)) { return 0 }
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return [int]$raw
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}
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function Set-SacFailCount {
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param([int]$Count)
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$f = Get-SacFailCountFileResolved
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$dir = Split-Path -Parent $f
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if (-not (Test-Path -LiteralPath $dir)) {
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New-Item -ItemType Directory -Path $dir -Force | Out-Null
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}
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Set-Content -LiteralPath $f -Value ([string]$Count) -Encoding UTF8 -NoNewline
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}
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function Reset-SacFailCount {
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Set-SacFailCount -Count 0
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}
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function Test-SacShouldAttemptSend {
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$mode = Get-SacNormalizedMode
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if ($mode -ne 'fallback') { return $true }
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$max = if ($SacFallbackFailures) { [int]$SacFallbackFailures } else { 5 }
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$n = Get-SacFailCount
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if ($n -lt $max) { return $true }
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if (Test-SacHealth) {
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Reset-SacFailCount
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Write-SacLog 'SAC: /health OK, resuming POST (fallback)'
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return $true
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}
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Write-SacLog "WARN: SAC fallback: skip POST ($n>=$max failures), local channels only"
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return $false
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}
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function Invoke-SacTlsPrep {
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if (-not $SacTlsSkipVerify) { return }
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if (-not $script:SacTlsCallbackRegistered) {
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[System.Net.ServicePointManager]::ServerCertificateValidationCallback = { $true }
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$script:SacTlsCallbackRegistered = $true
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}
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}
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function Test-SacHealth {
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if (-not (Test-SacConfigured)) { return $false }
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$base = Get-SacBaseUrl
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if ([string]::IsNullOrWhiteSpace($base)) { return $false }
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$timeout = if ($SacTimeoutSec) { [int]$SacTimeoutSec } else { 12 }
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try {
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Invoke-SacTlsPrep
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$resp = Invoke-WebRequest -Uri "$base/health" -Method Get -UseBasicParsing -TimeoutSec $timeout
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return ($resp.StatusCode -eq 200)
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} catch {
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return $false
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}
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}
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function Write-SacSpoolFile {
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param(
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[string]$EventId,
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[string]$JsonBody
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)
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$dir = Get-SacSpoolDirResolved
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if (-not (Test-Path -LiteralPath $dir)) {
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New-Item -ItemType Directory -Path $dir -Force | Out-Null
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}
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$path = Join-Path $dir "$EventId.json"
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[System.IO.File]::WriteAllText($path, $JsonBody, (New-Object System.Text.UTF8Encoding $false))
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}
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function Remove-SacSpoolFile {
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param([string]$EventId)
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$path = Join-Path (Get-SacSpoolDirResolved) "$EventId.json"
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if (Test-Path -LiteralPath $path) {
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Remove-Item -LiteralPath $path -Force -ErrorAction SilentlyContinue
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}
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}
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function Move-SacSpoolToRejected {
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param([string]$EventId)
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$dir = Get-SacSpoolDirResolved
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$src = Join-Path $dir "$EventId.json"
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if (-not (Test-Path -LiteralPath $src)) { return }
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$rejDir = Join-Path $dir 'rejected'
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if (-not (Test-Path -LiteralPath $rejDir)) {
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New-Item -ItemType Directory -Path $rejDir -Force | Out-Null
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}
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$dst = Join-Path $rejDir "$EventId.json"
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Move-Item -LiteralPath $src -Destination $dst -Force -ErrorAction SilentlyContinue
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}
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function Invoke-SacPostPayload {
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param([string]$JsonBody)
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if (-not (Test-SacConfigured)) { return $false }
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if (-not (Test-SacShouldAttemptSend)) { return $false }
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$ingest = Get-SacIngestUrl
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if ([string]::IsNullOrWhiteSpace($ingest)) { return $false }
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$jsonText = Get-SacSingleString -Value $JsonBody -Label 'spool payload'
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if ($jsonText -notmatch '"event_id"\s*:\s*"([0-9a-fA-F-]{36})"') {
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Write-SacLog 'WARN: SAC JSON has no event_id (uuid); skip POST'
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return $false
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}
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$eventId = $Matches[1]
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$eventType = 'unknown'
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if ($jsonText -match '"type"\s*:\s*"([^"]+)"') {
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$eventType = $Matches[1]
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}
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$timeout = if ($SacTimeoutSec) { [int]$SacTimeoutSec } else { 12 }
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$spoolOnFailure = $true
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try {
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Invoke-SacTlsPrep
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$headers = @{
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Authorization = "Bearer $SacApiKey"
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'Content-Type' = 'application/json; charset=utf-8'
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'Idempotency-Key' = $eventId
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}
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$bodyBytes = Get-SacUtf8Bytes -Text $jsonText
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$resp = Invoke-WebRequest -Uri $ingest -Method Post -Headers $headers -Body $bodyBytes -UseBasicParsing -TimeoutSec $timeout
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if (Test-SacIngestAcceptedStatus -StatusCode $resp.StatusCode) {
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Complete-SacIngestSuccess -EventId $eventId -EventType $eventType -StatusCode $resp.StatusCode
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return $true
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}
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$body = if ($resp.Content) { $resp.Content } else { '' }
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if ($resp.StatusCode -eq 422) {
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$spoolOnFailure = $false
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Write-SacLog "WARN: SAC POST HTTP 422 validation (not spooled) type=$eventType event_id=$eventId"
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}
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if ($body.Length -gt 0) {
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$snippet = $body.Substring(0, [Math]::Min(800, $body.Length))
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Write-SacLog "WARN: SAC POST HTTP $($resp.StatusCode): $snippet"
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} else {
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Write-SacLog "WARN: SAC POST HTTP $($resp.StatusCode) (empty body)"
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}
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} catch {
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$code = 0
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$body = Get-SacHttpErrorBody -ErrorRecord $_
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if ($_.Exception.Response) {
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$code = [int]$_.Exception.Response.StatusCode
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}
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if (Test-SacIngestAcceptedStatus -StatusCode $code) {
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Complete-SacIngestSuccess -EventId $eventId -EventType $eventType -StatusCode $code
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return $true
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}
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if ($code -eq 422) {
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$spoolOnFailure = $false
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Write-SacLog "WARN: SAC POST HTTP 422 validation (not spooled) type=$eventType event_id=$eventId"
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}
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$err = $_.Exception.Message
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if ($body.Length -gt 0) {
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$snippet = $body.Substring(0, [Math]::Min(800, $body.Length))
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Write-SacLog "WARN: SAC POST HTTP ${code}: $err | $snippet"
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} else {
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Write-SacLog "WARN: SAC POST HTTP ${code}: $err"
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}
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}
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if (-not $spoolOnFailure) {
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Move-SacSpoolToRejected -EventId $eventId
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return $false
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}
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Write-SacSpoolFile -EventId $eventId -JsonBody $jsonText
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$max = if ($SacFallbackFailures) { [int]$SacFallbackFailures } else { 5 }
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$n = Get-SacFailCount + 1
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Set-SacFailCount -Count $n
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if ($n -ge $max) {
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Write-SacLog "WARN: SAC fallback: SAC_FALLBACK_FAILURES threshold ($max)"
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}
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return $false
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}
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function Send-SacEvent {
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param(
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[Parameter(Mandatory = $true)][string]$EventType,
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[Parameter(Mandatory = $true)][string]$Severity,
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[Parameter(Mandatory = $true)][string]$Title,
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[Parameter(Mandatory = $true)][string]$Summary,
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[hashtable]$Details = $null
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)
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if (-not (Test-SacConfigured)) {
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Write-SacLog 'WARN: SAC not configured (SacUrl / SacApiKey)'
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return $false
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}
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$payload = New-SacEventPayload -EventType $EventType -Severity $Severity -Title $Title -Summary $Summary -Details $Details
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if ($payload -is [System.Array]) {
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$payload = $payload[-1]
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}
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$json = ConvertTo-SacJsonText -Payload $payload
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$json = Get-SacSingleString -Value $json -Label 'event json'
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if ([string]::IsNullOrWhiteSpace($json) -or $json[0] -ne '{') {
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Write-SacLog "WARN: SAC invalid JSON for type=$EventType (empty or does not start with {{)"
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return $false
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}
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return (Invoke-SacPostPayload -JsonBody $json)
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}
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function Send-SacLocalChannels {
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param(
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[string]$TelegramMessage,
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[string]$EmailSubject
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)
|
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if ([string]::IsNullOrWhiteSpace($TelegramMessage)) { return $false }
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$channels = @(Get-NotifyOrderChannels)
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if ($channels.Count -eq 0) { return $false }
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$anyOk = $false
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foreach ($ch in $channels) {
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$ok = switch ($ch) {
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'telegram' { Send-TelegramMessage -Message $TelegramMessage }
|
|
'email' { Send-EmailNotification -Message $TelegramMessage -Subject $EmailSubject }
|
|
default { $false }
|
|
}
|
|
if ($ok) { $anyOk = $true }
|
|
}
|
|
return $anyOk
|
|
}
|
|
|
|
function Test-SacHeartbeatOnlyEventType {
|
|
param([string]$EventType)
|
|
return ($EventType -eq 'agent.heartbeat')
|
|
}
|
|
|
|
function Send-NotifyOrSac {
|
|
param(
|
|
[Parameter(Mandatory = $true)][string]$EventType,
|
|
[Parameter(Mandatory = $true)][string]$Severity,
|
|
[Parameter(Mandatory = $true)][string]$Title,
|
|
[Parameter(Mandatory = $true)][string]$Summary,
|
|
[string]$TelegramMessage = '',
|
|
[string]$EmailSubject = 'RDP Login Monitor',
|
|
[hashtable]$Details = $null
|
|
)
|
|
|
|
if ([string]::IsNullOrWhiteSpace($TelegramMessage)) {
|
|
$TelegramMessage = $Summary
|
|
}
|
|
|
|
$mode = Get-SacNormalizedMode
|
|
|
|
# Периодический heartbeat — только SAC (UI), без Telegram/email в любом режиме.
|
|
if (Test-SacHeartbeatOnlyEventType -EventType $EventType) {
|
|
if ($mode -eq 'off') {
|
|
return $false
|
|
}
|
|
return (Send-SacEvent -EventType $EventType -Severity $Severity -Title $Title -Summary $Summary -Details $Details)
|
|
}
|
|
|
|
switch ($mode) {
|
|
'off' {
|
|
return (Send-SacLocalChannels -TelegramMessage $TelegramMessage -EmailSubject $EmailSubject)
|
|
}
|
|
'exclusive' {
|
|
return (Send-SacEvent -EventType $EventType -Severity $Severity -Title $Title -Summary $Summary -Details $Details)
|
|
}
|
|
'dual' {
|
|
Send-SacEvent -EventType $EventType -Severity $Severity -Title $Title -Summary $Summary -Details $Details | Out-Null
|
|
return (Send-SacLocalChannels -TelegramMessage $TelegramMessage -EmailSubject $EmailSubject)
|
|
}
|
|
'fallback' {
|
|
if (Send-SacEvent -EventType $EventType -Severity $Severity -Title $Title -Summary $Summary -Details $Details) {
|
|
return $true
|
|
}
|
|
return (Send-SacLocalChannels -TelegramMessage $TelegramMessage -EmailSubject $EmailSubject)
|
|
}
|
|
default {
|
|
Write-SacLog "WARN: unknown UseSAC=$mode, local channels only"
|
|
return (Send-SacLocalChannels -TelegramMessage $TelegramMessage -EmailSubject $EmailSubject)
|
|
}
|
|
}
|
|
}
|
|
|
|
function Invoke-SacFlushSpool {
|
|
param([int]$MaxFiles = 20)
|
|
|
|
$mode = Get-SacNormalizedMode
|
|
if ($mode -eq 'off') { return }
|
|
if (-not (Test-SacConfigured)) { return }
|
|
|
|
$dir = Get-SacSpoolDirResolved
|
|
if (-not (Test-Path -LiteralPath $dir)) { return }
|
|
|
|
$files = @(Get-ChildItem -LiteralPath $dir -Filter '*.json' -File -ErrorAction SilentlyContinue | Sort-Object LastWriteTime)
|
|
$count = 0
|
|
foreach ($f in $files) {
|
|
$count++
|
|
if ($count -gt $MaxFiles) { break }
|
|
try {
|
|
$utf8 = New-Object System.Text.UTF8Encoding $false
|
|
$json = [System.IO.File]::ReadAllText($f.FullName, $utf8)
|
|
Invoke-SacPostPayload -JsonBody $json | Out-Null
|
|
} catch {
|
|
Write-SacLog "WARN: SAC spool flush failed for $($f.Name): $($_.Exception.Message)"
|
|
}
|
|
}
|
|
}
|
|
|
|
function Test-SacConnection {
|
|
Write-Host 'SAC check (rdp-login-monitor)'
|
|
Write-Host "UseSAC=$(Get-SacNormalizedMode)"
|
|
switch (Get-SacNormalizedMode) {
|
|
'exclusive' { Write-Host 'Mode exclusive: SAC only' }
|
|
'dual' { Write-Host 'Mode dual: SAC + local channels' }
|
|
'fallback' { Write-Host 'Mode fallback: SAC, then local on failure' }
|
|
}
|
|
Write-Host "SacUrl=$SacUrl"
|
|
if (Test-SacConfigured) {
|
|
Write-Host "SAC ingest URL=$(Get-SacIngestUrl)"
|
|
}
|
|
if (-not (Test-SacConfigured)) {
|
|
Write-Error 'SAC: SacUrl or SacApiKey missing'
|
|
return 1
|
|
}
|
|
if (Test-SacHealth) {
|
|
Write-Host 'SAC health: OK'
|
|
} else {
|
|
Write-Error 'SAC health: FAIL'
|
|
return 1
|
|
}
|
|
if (Send-SacEvent -EventType 'agent.test' -Severity 'info' -Title 'SAC test' -Summary 'rdp-login-monitor CheckSac') {
|
|
Write-Host 'SAC ingest agent.test: OK (expected HTTP 201)'
|
|
return 0
|
|
}
|
|
Write-Error 'SAC ingest agent.test: FAIL'
|
|
return 1
|
|
}
|