// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause

//go:build (linux && !android) || (darwin && !ios) || freebsd || openbsd || plan9

package tailssh

import (
	"os/user"

	"tailscale.com/util/osuser"
)

// userMeta is a wrapper around *user.User with extra fields.
type userMeta struct {
	user.User

	// loginShellCached is the user's login shell, if known
	// at the time of userLookup.
	loginShellCached string
}

// userLookup is like os/user.Lookup but it returns a *userMeta wrapper
// around a *user.User with extra fields.
func userLookup(username string) (*userMeta, error) {
	u, s, err := osuser.LookupByUsernameWithShell(username)
	if err != nil {
		return nil, err
	}

	return &userMeta{User: *u, loginShellCached: s}, nil
}