Test-Credential.ps1
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function Test-Credential { <# .SYNOPSIS Takes a PSCredential object and validates it .DESCRIPTION Takes a PSCredential object and validates it against a domain or local machine Borrows from a variety of sources online, don't recall which - apologies! .PARAMETER Credential A PScredential object with the username/password you wish to test. Typically this is generated using the Get-Credential cmdlet. Accepts pipeline input. .PARAMETER Context An optional parameter specifying what type of credential this is. Possible values are 'Domain','Machine',and 'ApplicationDirectory.' The default is 'Domain.' .PARAMETER ComputerName If Context is machine, test local credential against this computer. .PARAMETER Domain If context is domain (default), test local credential against this domain. Default is current user's .OUTPUTS A boolean, indicating whether the credentials were successfully validated. .EXAMPLE #I provide my AD account credentials $cred = get-credential #Test credential for an active directory account Test-Credential $cred .EXAMPLE #I provide local credentials here $cred = get-credential #Test credential for a local account Test-Credential -ComputerName SomeComputer -Credential $cred .EXAMPLE #I provide my AD account credentials for domain2 $cred = get-credential #Test credential for an active directory account Test-Credential -Credential $cred -Domain domain2.com .FUNCTIONALITY Active Directory #> [cmdletbinding(DefaultParameterSetName = 'Domain')] param( [parameter(ValueFromPipeline=$true)] [System.Management.Automation.PSCredential]$Credential = $( Get-Credential -Message "Please provide credentials to test" ), [validateset('Domain','Machine', 'ApplicationDirectory')] [string]$Context = 'Domain', [parameter(ParameterSetName = 'Machine')] [string]$ComputerName, [parameter(ParameterSetName = 'Domain')] [string]$Domain = $null ) Begin { Write-Verbose "ParameterSetName: $($PSCmdlet.ParameterSetName)`nPSBoundParameters: $($PSBoundParameters | Out-String)" Try { Add-Type -AssemblyName System.DirectoryServices.AccountManagement } Catch { Throw "Could not load assembly: $_" } #create principal context with appropriate context from param. If either comp or domain is null, thread's user's domain or local machine are used if ($Context -eq 'ApplicationDirectory' ) { #Name=$null works for machine/domain, not applicationdirectory $DS = New-Object System.DirectoryServices.AccountManagement.PrincipalContext([System.DirectoryServices.AccountManagement.ContextType]::$Context) } elseif ($PSCmdlet.ParameterSetName -eq 'Domain') { $Context = $PSCmdlet.ParameterSetName $DS = New-Object System.DirectoryServices.AccountManagement.PrincipalContext([System.DirectoryServices.AccountManagement.ContextType]::$Context, $Domain) } elseif ($PSCmdlet.ParameterSetName -eq 'Machine') { $Context = $PSCmdlet.ParameterSetName $DS = New-Object System.DirectoryServices.AccountManagement.PrincipalContext([System.DirectoryServices.AccountManagement.ContextType]::$Context, $ComputerName) } } Process { #Validate provided credential $DS.ValidateCredentials($Credential.UserName, $Credential.GetNetworkCredential().password) } End { $DS.Dispose() } } |