functions/Get-DbaSpn.ps1
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function Get-DbaSpn { <# .SYNOPSIS Returns a list of set service principal names for a given computer/AD account .DESCRIPTION Get a list of set SPNs. SPNs are set at the AD account level. You can either retrieve set SPNs for a computer, or any SPNs set for a given active directry account. You can query one, or both. You'll get a list of every SPN found for either search term. .PARAMETER ComputerName The servers you want to return set SPNs for. This is defaulted automatically to localhost. .PARAMETER AccountName The accounts you want to retrieve set SPNs for. .PARAMETER Credential User credential to connect to the remote servers or active directory. This is a required parameter. .PARAMETER ByAccount Shows all SPNs registered by the specified AccountName otherwise, only results will be shown for the specified ComputerName (which is localhost by default) .NOTES Author: Drew Furgiuele (@pittfurg), http://www.port1433.com dbatools PowerShell module (https://dbatools.io) Copyright (C) 2016 Chrissy LeMaire This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. .LINK https://dbatools.io/Get-DbaSpn .EXAMPLE Get-DbaSpn -ServerName SQLSERVERA -Credential (Get-Credential) Returns a custom object with SearchTerm (ServerName) and the SPNs that were found .EXAMPLE Get-DbaSpn -AccountName doamain\account -Credential (Get-Credential) Returns a custom object with SearchTerm (domain account) and the SPNs that were found .EXAMPLE Get-DbaSpn -ServerName SQLSERVERA,SQLSERVERB -Credential (Get-Credential) Returns a custom object with SearchTerm (ServerName) and the SPNs that were found for multiple computers #> [cmdletbinding()] param ( [Parameter(Mandatory = $false,ValueFromPipeline = $true)] [string[]]$ComputerName = $env:COMPUTERNAME, [Parameter(Mandatory = $false)] [string[]]$AccountName, [switch]$ByAccount, [Parameter(Mandatory = $false)] [PSCredential]$Credential ) begin { Function Process-Account ($AccountName, $ByAccount) { ForEach ($account in $AccountName) { $ogaccount = $account if ($account -like "*\*") { Write-Verbose "Account name ($account) provided in in domain\user format, stripping out domain info." $account = ($account.split("\"))[1] } if ($account -like "*@*") { Write-Verbose "Account name ($account) provided in in user@domain format, stripping out domain info." $account = ($account.split("@"))[0] } $root = ([ADSI]"LDAP://RootDSE").defaultNamingContext $adsearch = New-Object System.DirectoryServices.DirectorySearcher if ($Credential) { $domain = New-Object System.DirectoryServices.DirectoryEntry -ArgumentList ("LDAP://" + $root), $($Credential.UserName), $($Credential.GetNetworkCredential().password) } else { $domain = New-Object System.DirectoryServices.DirectoryEntry -ArgumentList ("LDAP://" + $root) } $adsearch.SearchRoot = $domain $adsearch.Filter = $("(&(samAccountName={0}))" -f $account) Write-Verbose "Looking for account $account..." try { $Result = $adsearch.FindOne() } catch { Write-Warning "AD lookup failure. This may be because the hostname ($computer) was not resolvable within the domain ($domain) or the SQL Server service account ($serviceaccount) couldn't be found in domain." continue } $properties = $result.Properties foreach ($spn in $result.Properties.serviceprincipalname) { if ($spn -match "\:") { try { $port = [int]($spn -Split "\:")[1] } catch { $port = $null } if ($spn -match "\/") { $serviceclass = ($spn -Split "\/")[0] } } [pscustomobject] @{ Input = $ogaccount AccountName = $ogaccount ServiceClass = "MSSQLSvc" # $serviceclass Port = $port SPN = $spn } } } continue } } process { foreach ($computer in $ComputerName) { if ($computer) { if ($computer.EndsWith('$')) { Write-Verbose "$computer is an account name. Processing as account." Process-Account -AccountName $computer -ByAccount:$true continue } } Write-Verbose "Getting SQL Server SPN for $computer" $spns = Test-DbaSpn -ComputerName $computer -Credential $Credential $sqlspns = 0 $spncount = $spns.count Write-Verbose "Calculated $spncount SQL SPN entries that should exist for $computer" foreach ($spn in $spns | Where-Object { $_.IsSet -eq $true }) { $sqlspns++ if ($accountName) { if ($accountName -eq $spn.InstanceServiceAccount) { [pscustomobject] @{ Input = $computer AccountName = $spn.InstanceServiceAccount ServiceClass = "MSSQLSvc" Port = $spn.Port SPN = $spn.RequiredSPN } } } else { [pscustomobject] @{ Input = $computer AccountName = $spn.InstanceServiceAccount ServiceClass = "MSSQLSvc" Port = $spn.Port SPN = $spn.RequiredSPN } } } Write-Verbose "Found $sqlspns set SQL SPN entries for $computer" } if ($AccountName) { foreach ($account in $AccountName) { Process-Account -AccountName $account -ByAccount:$ByAccount } } } } |