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ServiceAccountPasswordHandler.ps1
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ServiceAccountPasswordHandler.ps1
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<#
.Synopsis
Handle service accounts password according to json file
.DESCRIPTION
Keep service accounts password up to date
.PARAMETER AccountDataFile
Input JSON file with account data to process
.PARAMETER NotAdmin
Bypass check for eleveted execution
.Notes
Author: Jack Olsson
Changes:
#>
[CmdletBinding(SupportsShouldProcess = $False)]
param (
[string]$AccountDataFile,
[switch]$NotAdmin
)
#region local functions
#Load default arguemts for this script.
#Command prompt arguments will override file settings
function Get-LocalDefaultVariables {
[CmdletBinding(SupportsShouldProcess = $False)]
param(
[parameter(Position = 0, mandatory = $true)]
$CallerInvocation,
[switch]$defineNew,
[switch]$overWriteExisting
)
foreach ($settingsFile in (Get-SettingsFiles $CallerInvocation ".json")) {
if (Test-Path $settingsFile) {
Write-Verbose "Reading file: [$settingsFile]"
$DefaultParamters = Get-Content -Path $settingsFile -Encoding UTF8 | ConvertFrom-Json
ForEach ($prop in $DefaultParamters | Get-Member -MemberType NoteProperty) {
if (($prop.Name).IndexOf(':') -eq -1) {
$key = $prop.Name
$var = Get-Variable $key -ErrorAction SilentlyContinue
$value = $DefaultParamters.($prop.Name)
if (!$var) {
if ($defineNew) {
Write-Verbose "New Var: $key"
if ($value.GetType().Name -eq "String" -and $value.SubString(0, 1) -eq '(') {
$var = New-Variable -Name $key -Value (Invoke-Expression $Value) -Scope 1
}
else {
$var = New-Variable -Name $key -Value $value -Scope 1
}
}
}
else {
#We only overwrite non-set values if not forced
if (!($var.Value) -or $overWriteExisting) {
try {
Write-Verbose "Var: $key"
if ($value.GetType().Name -eq "String" -and $value.SubString(0, 1) -eq '(') {
$var.Value = Invoke-Expression $value
}
else {
$var.Value = $value
}
}
Catch {
$ex = $PSItem
$ex.ErrorDetails = "Err adding $key from $settingsFile. " + $PSItem.Exception.Message
throw $ex
}
}
}
}
}
}
else {
Write-Verbose "File not found: [$settingsFile]"
}
}
}
function ChangePasswordForAccount {
[CmdletBinding(SupportsShouldProcess = $True)]
param (
[string]$AccountName,
[int]$PasswordLength,
[PSCustomObject]$serviceData,
[hashtable]$sessionHash,
[Object[]]$supportedTypes
)
$newPassword = New-RandomPassword -PasswordLength $PasswordLength
Set-ADAccountPassword -Identity $AccountName -NewPassword (ConvertTo-SecureString -string "$newPassword" -AsPlainText -Force)
#Server list or local only
if ($serviceData.Servers) {
$processServers=$serviceData.Servers | Get-Member -MemberType NoteProperty
} else {
$processServers=[PSCustomObject]@{
Name="local"
}
}
#ChangePasswordForAccount -serviceData $serviceData
foreach ($server in $processServers) {
$CommandArguments = @{
password="$newPassword"
AccountName=$AccountName
ComputerName=$server.Name
Verbose=$False
}
if ($SessionHash.ContainsKey($server.Name)) {
$CommandArguments.Add("session",$SessionHash[$server.Name])
}
$passwordTypes = $serviceData.Servers.($server.Name)
if ([string]::IsNullOrEmpty($passwordTypes)) {
$passwordTypes=$supportedTypes
}
foreach($PassWordType in $passwordTypes) {
Msg ("Process $PassWordType on " + $server.Name)
$Command = "Set-" + $PassWordType + "Password @CommandArguments"
$foundInstances=$null
$foundInstances = Invoke-Expression $Command
Msg ("Found instances [$PassWordType];" + ($foundInstances -join ' | '))
}
}
}
#endregion
#region Init
$scriptPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
#if (-not (Get-Module PSJumpStart)) {
Import-Module PSJumpStart -Force -MinimumVersion 1.2.0
#}
#Get Local variable default values from external DFP-files
Get-LocalDefaultVariables($MyInvocation)
#Get global deafult settings when calling modules
$PSDefaultParameterValues = Get-GlobalDefaultsFromJsonFiles $MyInvocation -Verbose:$VerbosePreference
#endregion
Msg "Start Execution"
if (!$NotAdmin) {
#Check elevated execution
$currentPrincipal = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())
if (!$currentPrincipal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
Msg "Pleas re-run command as Administrator" -Type Error
Exit
}
}
if ([string]::IsNullOrEmpty($AccountDataFile)) {
$AccountDataFile = $MyInvocation.MyCommand.Definition -replace ".ps1$", ".json"
}
if (!(Test-Path $AccountDataFile)) {
throw [System.IO.FileNotFoundException] "Missing input file [$AccountDataFile]"
}
Try {
$settings = Get-Content $AccountDataFile -raw | ConvertFrom-Json
} catch {
throw "Error reading [$AccountDataFile]: " + $PSItem
}
$AccountList = $settings.ServiceAccounts
$ServerList = Get-ServerNameList $settings.ServiceAccounts
$SessionHash = Get-ServerSessions $ServerList -ExcludeList $settings.NoPSSessionServers
#Get All Available password types
$supportedTypes=Get-Command -Name Set-*Password -Module PSJumpStart | Select-Object -ExpandProperty Name | ForEach-Object {$_ -replace "Set-","" -replace "Password",""}
$exit=$false
foreach($server in $SessionHash.Keys) {
$session = $SessionHash[$server]
if ($session.GetType().Name -ne "PSSession") {
Msg ($server + ":" + $session ) -Type Error
$exit=$True
}
}
#Exit if any session is missing
if ($exit) {Exit}
#Finally we get to do some real work!
foreach ($serviceAccount in ($AccountList | Get-Member -MemberType NoteProperty)) {
Msg "Check $($serviceAccount.Name)"
$serviceData = $AccountList.($serviceAccount.Name)
if ([string]::IsNullOrEmpty($serviceData.LastChanged)) {
#Set new password!
ChangePasswordForAccount -AccountName $serviceAccount.Name -PasswordLength $settings.AccountPolicy.PasswordLength -serviceData $serviceData -sessionHash $SessionHash -supportedTypes $supportedTypes
#Save lastChange
$settings.ServiceAccounts.($serviceAccount.Name) | Add-Member -MemberType NoteProperty -Name "LastChanged" -Value (Get-Date -Format "yyyy-MM-dd") -Force
}
else {
#Check if pasword should be changed
$lastChanged = [DateTime]$serviceData.LastChanged
$spanDays = Get-Random -Maximum $settings.AccountPolicy.ChangePeriod
Write-Verbose ("Due change " + $lastChanged.AddDays($settings.AccountPolicy.PasswordAge) + " - Random [$spanDays] due date: " + (Get-Date).AddDays($spanDays))
if ($lastChanged.AddDays($settings.AccountPolicy.PasswordAge) -le (Get-Date)) {
#Long overdue. Change now!
ChangePasswordForAccount -AccountName $serviceAccount.Name -PasswordLength $settings.AccountPolicy.PasswordLength -serviceData $serviceData -sessionHash $SessionHash -supportedTypes $supportedTypes
$settings.ServiceAccounts.($serviceAccount.Name) | Add-Member -MemberType NoteProperty -Name "LastChanged" -Value (Get-Date -Format "yyyy-MM-dd") -Force
}
elseif ($lastChanged.AddDays($settings.AccountPolicy.PasswordAge) -le (Get-Date).AddDays($spanDays)) {
#Change within interval at ramdom selection
ChangePasswordForAccount -AccountName $serviceAccount.Name -PasswordLength $settings.AccountPolicy.PasswordLength -serviceData $serviceData -sessionHash $SessionHash -supportedTypes $supportedTypes
$settings.ServiceAccounts.($serviceAccount.Name) | Add-Member -MemberType NoteProperty -Name "LastChanged" -Value (Get-Date -Format "yyyy-MM-dd") -Force
}
}
}
#Save lastchanged dates (along with everything else)
$settings | ConvertTo-Json -Depth 10 | ForEach-Object { $_ -replace " ", " " } | Set-Content ($AccountDataFile) -Force
Msg "End Execution"