Supporta task backup con credenziali memorizzate

scripts/Register-BakRestTask.ps1

@@ -7,6 +7,10 @@ param(
 
     [switch]$RunAsCurrentUser,
 
+    [switch]$RunAsStoredCredentials,
+
+    [string]$UserName,
+
     [switch]$NoShutdown
 )
 
@@ -45,6 +49,10 @@ if ($NoShutdown -and $Task -eq "BackupOnLogoff") {
     $xml = $xml -replace '<Arguments>-m bakrest\.tray_app --nogui</Arguments>', '<Arguments>-m bakrest.tray_app --nogui --no-shutdown</Arguments>'
 }
 
+if ($RunAsStoredCredentials -and $RunAsCurrentUser) {
+    throw "Use either -RunAsCurrentUser or -RunAsStoredCredentials, not both."
+}
+
 if ($RunAsCurrentUser) {
     $currentIdentity = [System.Security.Principal.WindowsIdentity]::GetCurrent()
     $currentSid = $currentIdentity.User.Value
@@ -65,11 +73,48 @@ if ($RunAsCurrentUser) {
     )
 }
 
+$plainPassword = $null
+$runAsName = $null
+if ($RunAsStoredCredentials) {
+    if (-not $UserName) {
+        $UserName = [System.Security.Principal.WindowsIdentity]::GetCurrent().Name
+    }
+
+    $securePassword = Read-Host -Prompt "Password for $UserName" -AsSecureString
+    $passwordPtr = [Runtime.InteropServices.Marshal]::SecureStringToBSTR($securePassword)
+    try {
+        $plainPassword = [Runtime.InteropServices.Marshal]::PtrToStringBSTR($passwordPtr)
+    } finally {
+        [Runtime.InteropServices.Marshal]::ZeroFreeBSTR($passwordPtr)
+    }
+
+    $principalXml = @"
+<Principals>
+    <Principal id="Author">
+      <UserId>$([System.Security.SecurityElement]::Escape($UserName))</UserId>
+      <LogonType>Password</LogonType>
+      <RunLevel>LeastPrivilege</RunLevel>
+    </Principal>
+  </Principals>
+"@
+    $xml = [regex]::Replace(
+        $xml,
+        '<Principals>.*?</Principals>',
+        $principalXml,
+        [System.Text.RegularExpressions.RegexOptions]::Singleline
+    )
+    $runAsName = $UserName
+}
+
 $tempXml = Join-Path $env:TEMP ("bakrest-task-{0}.xml" -f ([Guid]::NewGuid()))
 [System.IO.File]::WriteAllText($tempXml, $xml, [System.Text.Encoding]::Unicode)
 
 try {
+    if ($RunAsStoredCredentials) {
+        schtasks.exe /Create /TN $taskName /XML $tempXml /RU $UserName /RP $plainPassword /F
+    } else {
         schtasks.exe /Create /TN $taskName /XML $tempXml /F
+    }
     if ($LASTEXITCODE -ne 0) {
         throw "schtasks failed with exit code $LASTEXITCODE"
     }
@@ -79,9 +124,13 @@ try {
     if ($RunAsCurrentUser) {
         Write-Host "RunAs: $($currentIdentity.Name)"
     }
+    if ($RunAsStoredCredentials) {
+        Write-Host "RunAs: $runAsName (stored credentials)"
+    }
     if ($NoShutdown -and $Task -eq "BackupOnLogoff") {
         Write-Host "BackupOnLogoff registered in debug mode: --no-shutdown"
     }
 } finally {
+    $plainPassword = $null
     Remove-Item -LiteralPath $tempXml -Force -ErrorAction SilentlyContinue
 }