PortValhalla/scripts/Common/Scripts/Operations.ps1

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. "$PSScriptRoot/Config.ps1";
. "$PSScriptRoot/../Types/OneShotTask.ps1";
. "$PSScriptRoot/../../Windows/Scripts/PowerManagement.ps1";
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$null = New-Module {
. "$PSScriptRoot/../Types/OneShotTask.ps1";
$logName = "Application";
$oneShotTrigger = 1337;
$taskOption = "OneShotTask";
# ToDo: Store "ProgramData/PortValhalla" path somewhere as const
$errorPath = "$env:ProgramData/PortValhalla/error.txt";
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$taskSetter = {
param([Nullable[OneShotTask]] $Task)
Set-SetupOption $taskOption ([string]$Task);
};
function Start-Operation {
param(
[scriptblock] $Action
)
$Global:ErrorActionPreference = 'Inquire';
$env:WSLENV = "CONFIG_MODULE/p";
if ($env:CONFIG_MODULE) {
$env:CONFIG_MODULE = Resolve-Path $env:CONFIG_MODULE;
}
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New-Alias -Force "sudo" gsudo;
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& $Action;
}
<#
.SYNOPSIS
Gets the current OneShot task.
#>
function Get-OneShotTask {
[OneShotTask](Get-SetupOption $taskOption);
}
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<#
.SYNOPSIS
Registers a task for listening to OneShot invocations.
#>
function Enable-OneShotListener {
$tempTask = "PortValhalla Temp";
$action = New-ScheduledTaskAction -Execute "pwsh" -Argument (Get-StartupArguments);
schtasks /Create /SC ONEVENT /EC $logName /MO "*[System[Provider[@Name='$logName'] and EventID=$($oneShotTrigger)]]" /TR cmd.exe /TN $tempTask;
$trigger = (Get-ScheduledTask $tempTask).Triggers;
$principal = New-ScheduledTaskPrincipal -UserId (Get-SetupUser) -RunLevel Highest;
$task = New-ScheduledTask -Action $action -Principal $principal -Trigger $trigger;
$null = Register-ScheduledTask -Force "PortValhalla OneShot" -InputObject $task;
$null = Unregister-ScheduledTask -Confirm:$false $tempTask;
}
<#
.SYNOPSIS
Invokes a one-shot task.
.PARAMETER Task
The task to run.
#>
function Invoke-OneShot {
param(
[OneShotTask] $Task
)
$currentStage = Get-Stage;
Set-Stage ([SetupStage]::OneShot);
& $taskSetter $Task;
$job = & {
$identifier = "EventLog$oneShotTrigger";
$log = [System.Diagnostics.EventLog]::new($logName);
$null = Register-ObjectEvent -InputObject $log -EventName EntryWritten -Action {
$entry = $event.SourceEventArgs.Entry;
if ($entry.EventID -eq $oneShotTrigger) {
$null = New-Event -SourceIdentifier $identifier;
}
};
Start-Job {
Wait-Event -SourceIdentifier $identifier;
};
};
Write-EventLog -LogName $logName -Source $logName -EventId $oneShotTrigger -Message "Starting OneShot task ``$(Get-OneShotTask)``";
$null = Wait-Job $job;
Set-Stage $currentStage;
if (Test-Path $errorPath) {
$errorMessage = Get-Content $errorPath;
Remove-Item $errorPath;
throw $errorMessage;
}
}
# ToDo: Store Run-OneShot and Receive-OneShot somewhere else in Windows folder
<#
.SYNOPSIS
Executes the specified action and notifies the OneShot task executor.
#>
function Start-OneShot {
param(
[scriptblock] $Action
)
try {
Start-Operation @PSBoundParameters;
}
catch {
Set-Content -Path $errorPath -Value $Error;
}
finally {
Set-Stage ([SetupStage]::Idle);
Write-EventLog -LogName $logName -Source $logName -EventId $oneShotTrigger -Message "The OneShot task ``$(Get-OneShotTask)`` finished.";
}
}
};