VaultServer

1.0.0

Private/GetLocalGroupAndUsers.ps1

function GetLocalGroupAndUsers {
    [CmdletBinding()]
    Param()

    if (!$PSVersionTable.Platform -or $PSVersionTable.Platform -eq "Win32NT") {
        $AllLocalUsers = Get-LocalUser
        $AllLocalGroups = Get-LocalGroup

        [System.Collections.ArrayList]$AllLocalGroupMembership = @()
        foreach ($Group in $AllLocalGroups) {
            $Users = Get-LocalGroupMember $Group | Where-Object {$_.PrincipalSource -eq "Local"} | foreach {
                if ($_.Name -match '\\') {
                    $($_.Name -split '\\')[-1]
                }
                else {
                    $_.Name
                }
            }
            if ($Users) {
                $PSObject = [pscustomobject]@{
                    Group   = $Group.Name
                    Users   = @($Users)
                }
                $null = $AllLocalGroupMembership.Add($PSObject)
            }
        }

        $AllLocalGroupMembership
    }
    
    if ($PSVersionTable.Platform -eq "Unix" -or $PSVersionTable.OS -match "Darwin") {
        $AllUsers = $(bash -c "getent passwd") | foreach {$($_ -split ':')[0]}
        $AllGroups = $(bash -c "getent group") | foreach {$($_ -split ':')[0]}
        [System.Collections.ArrayList]$UserAndGroups = foreach ($User in $AllUsers) {
            $Groups = $(bash -c "getent group | grep $User") | foreach {$($_ -split ':')[0]}
            [pscustomobject]@{
                User    = $User
                Groups  = [System.Collections.ArrayList]@($Groups)
            }
        }

        [System.Collections.ArrayList]$GroupAndUsers = foreach ($Group in $AllGroups) {
            $Users = foreach ($UserObj in $UserAndGroups) {
                if ($UserObj.Groups -contains $Group) {
                    $UserObj.User
                }
            }
            [pscustomobject]@{
                Group   = $Group
                Users   = [System.Collections.ArrayList]@($Users)
            }
        }

        $ActualSudoUsersPrep = foreach ($User in $AllUsers) {
            bash -c "sudo -l -U $User"
        }
        $ActualSudoUsers = $ActualSudoUsersPrep -match "User.*may run .*:" | foreach {$($_ -replace 'User ','' -split ' may')[0]}
        $PSObject = [pscustomobject]@{
            Group   = "sudousers"
            Users   = $ActualSudoUsers
        }
        $null = $GroupAndUsers.Add($PSObject)

        $HumanUsersPrep = bash -c "awk -F: '`$3 >= 1000 && `$1 != `"nobody`" {print `$1}' /etc/passwd"
        $HumanUsers = $HumanUsersPrep | Where-Object {$_ -notmatch "nobody"}
        $PSObject = [pscustomobject]@{
            Group   = "humanusers"
            Users   = $HumanUsers
        }
        $null = $GroupAndUsers.Add($PSObject)

        foreach ($User in $ActualSudoUsers) {
            foreach ($obj in $UserAndGroups) {
                if ($obj.User -eq $User) {
                    $null = $obj.Groups.Add("sudousers")
                }
            }
        }

        foreach ($User in $HumanUsers) {
            foreach ($obj in $UserAndGroups) {
                if ($obj.User -eq $User) {
                    $null = $obj.Groups.Add("humanusers")
                }
            }
        }

        $GroupAndUsers
    }
}

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