AppVentiX

2024.320.1415

private/Get-GroupSID.ps1

                                <#

    .SYNOPSIS

        Retrieves the Security Identifier (SID) of a group.

    .DESCRIPTION

        The Get-GroupSID function retrieves the Security Identifier (SID) of a group specified by its name and optional domain.

    .PARAMETER GroupName

        Specifies the name of the group.

    .PARAMETER DomainName

        Specifies the domain name of the group. If not provided, the current user's domain will be used.

    .EXAMPLE

        Get-GroupSID -GroupName "Domain Admins"

        Retrieves the SID of the "Administrators" group in the current user's domain.

    .EXAMPLE

        Get-GroupSID -GroupName "Domain Admins" -DomainName "contoso.com"

        Retrieves the SID of the "Administrators" group in the "contoso.com" domain.

    .EXAMPLE

        Get-GroupSID -GroupName "CONTOSO\Domain Admins"

        Retrieves the SID of the "Administrators" group in the "contoso.com" domain.

    .NOTES

        Function : Get-GroupSID

        Author   : John Billekens

        Copyright: Copyright (c) De Technische Jongens

        Version  : 1.2

#>

function Get-GroupSID {

    [CmdletBinding()]

    Param (

        [ValidateNotNullOrEmpty()]

        [String]$GroupName,

        [String]$DomainName = ${Env:USERDNSDOMAIN}

    )

    Write-Verbose "Retrieving SID for group '$GroupName' in domain '$DomainName'."

    if ($GroupName -like '*\*') {

        Write-Verbose "Group name contains a domain name. Splitting the domain name and group name."

        $DomainName, $GroupName = $GroupName.Split('\')

    } elseif ([String]::IsNullOrEmpty($DomainName) -and $GroupName -like '*\*') {

        Write-Verbose "Domain name not provided. Group name contains a domain name. Splitting the domain name and group name."

        $DomainName, $GroupName = $GroupName.Split('\')

    }

    Write-Verbose "Retrieving the SID of the group '$GroupName' in the domain '$DomainName'."

    $objUser = New-Object System.Security.Principal.NTAccount($DomainName, $GroupName)

    $strSID = $objUser.Translate([System.Security.Principal.SecurityIdentifier])

    Write-Verbose "SID of the group is '$($strSID.Value)'."

    return $strSID.Value

}

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