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Fixing session problems
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@adbertram
adbertram authored Jul 31, 2018
1 parent bf0ab82 commit bd052aa
Showing 1 changed file with 76 additions and 86 deletions.
162 changes: 76 additions & 86 deletions Scheduled Tasks/Move-ScheduledTask.ps1
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
<#
<#
.SYNOPSIS
This script is intended to migrate scheduled tasks from a Windows Server 2003 server to a Windows Server 2012 server. It is
intended to be ran locally on the source computer and will use remoting to connect to the destination server.
Expand Down Expand Up @@ -33,100 +33,90 @@ param (
[switch]$SkipDisabledTasks
)

begin {
function Get-MyScheduledTask ($Computername = 'localhost') {
$ScriptBlock = {
$Service = New-object -ComObject ("Schedule.Service")
$Service.Connect()
$Folders = [System.Collections.ArrayList]@()
$Root = $Service.GetFolder("\")
$Folders.Add($Root) | Out-Null
$Root.GetFolders(0) | foreach { $Folders.Add($_) | Out-Null }
foreach ($Folder in $Folders) {
$Folder.GetTasks(0)
}
}
if ($Computername -eq 'localhost') {
$ScriptBlock.Invoke()
} else {
Invoke-Command -ComputerName $Computername -ScriptBlock $ScriptBlock
function Get-MyScheduledTask ($Computername) {
$ScriptBlock = {
$Service = New-object -ComObject ("Schedule.Service")
$Service.Connect()
$Folders = [System.Collections.ArrayList]@()
$Root = $Service.GetFolder("\")
$Folders.Add($Root) | Out-Null
$Root.GetFolders(0) | foreach { $Folders.Add($_) | Out-Null }
foreach ($Folder in $Folders) {
$Folder.GetTasks(0)
}
}
if (-not $PSBoundParameters.ContainsKey('ComputerName')) {
$ScriptBlock.Invoke()
} else {
Invoke-Command -ComputerName $Computername -ScriptBlock $ScriptBlock
}
}

$ErrorActionPreference = 'Stop'
Set-StrictMode -Version Latest

try {
## Get all of the scheduled paths not intentionally excluded
$SrcSchTasks = Get-MyScheduledTask | where { $ExcludePaths -notcontains $_.Path }
Write-Verbose "Found $(@($SrcSchTasks).Count) scheduled tasks on [$DestinationComputername] to migrate."
## If there's no scheduled tasks, exit
if (!$SrcSchTasks) {
throw "No scheduled tasks found on localhost"
}

$ErrorActionPreference = 'Stop'
Set-StrictMode -Version Latest
## Always exclude these task folders
$ExcludePaths += '\Microsoft'

try {
## Get all of the scheduled paths not intentionally excluded from the localhost
$SrcSchTasks = Get-MyScheduledTask | where { $ExcludePaths -notcontains $_.Path }
Write-Verbose "Found $(@($SrcSchTasks).Count) scheduled tasks on localhost to migrate"
## If there's no scheduled tasks, exit
if (!$SrcSchTasks) {
throw "No scheduled tasks found on localhost"
}

## Always exclude these task folders
$ExcludePaths += '\Microsoft'

## Create a remote session with the destination server for reuse
## Assuming your logged on user has permission to the destination computer here
$DestSession = New-PSSession -ComputerName $DestinationComputername

## Because I can't export out any user password from the source computer find all of the user accounts where a password
## is needed and prompt the user to insert the credentials in this script and doing a lookup rather than prompting
## the user over and over for the same password
$UserAccountsAffected = $SrcSchTasks | foreach { ([xml]$_.xml).Task.Principals.Principal.UserId } | Select-Object -Unique
if ($UserAccountsAffected) {
$StoredCredentials = @{ }
$UserAccountsAffected | foreach {
$Password = Read-Host "What is the password for $($_)?"
$StoredCredentials[$_] = $Password
}
## Create a remote session with the destination server for reuse
## Assuming your logged on user has permission to the destination computer here
$DestSession = New-PSSession -ComputerName $DestinationComputername

## Because I can't export out any user password from the source computer find all of the user accounts where a password
## is needed and prompt the user to insert the credentials in this script and doing a lookup rather than prompting
## the user over and over for the same password
$UserAccountsAffected = $SrcSchTasks | foreach { ([xml]$_.xml).Task.Principals.Principal.UserId } | Select-Object -Unique
if ($UserAccountsAffected) {
$StoredCredentials = @{ }
$UserAccountsAffected | foreach {
$Password = Read-Host "What is the password for $($_)?"
$StoredCredentials[$_] = $Password
}

## Find all scheduled tasks on the destination server with the full path in order to not overwrite these later
$BeforeDestSchTasks = Get-MyScheduledTask -Computername $DestinationComputername | Select-Object -ExpandProperty Path
Write-Verbose "Found $(@($BeforeDestSchTasks).Count) scheduled tasks on destination computer pre-migration"

} catch {
Write-Error $_.Exception.Message
exit
}
}

process {
try {
foreach ($Task in $SrcSchTasks) {
## Don't overwrite any existing scheduled tasks
if ($BeforeDestSchTasks -contains $Task.Path) {
Write-Warning "The task $($Task.Path) already exists on the destination computer"
} elseif ($ExcludeTasks -contains $Task.Name) {
Write-Verbose "Skipping the task $($Task.Name)"

## Find all scheduled tasks on the destination server with the full path in order to not overwrite these later
$BeforeDestSchTasks = Get-MyScheduledTask -Computername $DestinationComputername | Select-Object -ExpandProperty Path
Write-Verbose "Found $(@($BeforeDestSchTasks).Count) scheduled tasks on destination computer pre-migration"

foreach ($Task in $SrcSchTasks) {
## Don't overwrite any existing scheduled tasks
if ($BeforeDestSchTasks -contains $Task.Path) {
Write-Warning "The task $($Task.Path) already exists on the destination computer"
} elseif ($ExcludeTasks -contains $Task.Name) {
Write-Verbose "Skipping the task $($Task.Name)"
} else {
## Skip a disabled task if the $SkipDisabledTasks param was set
$xTask = [xml]$Task.xml
if (($xTask.Task.Settings.Enabled -eq 'false') -and $SkipDisabledTasks.IsPresent) {
Write-Verbose "Skipping disabled task $($Task.Path)"
} else {
## Skip a disabled task if the $SkipDisabledTasks param was set
$xTask = [xml]$Task.xml
if (($xTask.Task.Settings.Enabled -eq 'false') -and $SkipDisabledTasks.IsPresent) {
Write-Verbose "Skipping disabled task $($Task.Path)"
} else {
## Find the user in the scheduled tasks and perform a hash table lookup from the passwords gathered earlier
## to use for the password in the task created on $DestinationComputername
$User = $xTask.Task.Principals.Principal.UserId
$Password = $StoredCredentials[$User]
$Path = $Task.Path | Split-Path -Parent
## Use remoting to connect to the destination server. I'm assuming this destination server is Win8+ or Win2012+ because
## I'm using Register-ScheduledTask
$taskName = $Task.Name
Invoke-Command -Session $DestSession -ScriptBlock {
Register-ScheduledTask -Xml $using:xTask -TaskName $using:taskName -TaskPath $using:Path -User $using:User -Password $using:Password | Out-Null
}
## Find the user in the scheduled tasks and perform a hash table lookup from the passwords gathered earlier
## to use for the password in the task created on $DestinationComputername
$User = $xTask.Task.Principals.Principal.UserId
$Password = $StoredCredentials[$User]
$Path = $Task.Path | Split-Path -Parent
## Use remoting to connect to the destination server. I'm assuming this destination server is Win8+ or Win2012+ because
## I'm using Register-ScheduledTask
$taskName = $Task.Name
Invoke-Command -Session $DestSession -ScriptBlock {
Register-ScheduledTask -Xml $using:xTask -TaskName $using:taskName -TaskPath $using:Path -User $using:User -Password $using:Password | Out-Null
}
}
}
} catch {
Write-Error "Error: $($_.Exception.Message) - Line Number: $($_.InvocationInfo.ScriptLineNumber)"
$false
}
}
end {
Remove-PSSession $DestSession
} catch {
Write-Error "Error: $($_.Exception.Message) - Line Number: $($_.InvocationInfo.ScriptLineNumber)"
} finally {
if (Get-Variable -name DestSession -ErrorAction Ignore) {
Remove-PSSession $DestSession
}
}

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