socket9 0.1.0-alpha.1

/*-
 * socket9 - A RAW networking sockets manipulation and configration basing on 
 * strong types.
 * 
 * Copyright (C) 2021 Aleksandr Morozov, Lucia Hoffmann
 * Copyright (C) 2025 Aleksandr Morozov
 * 
 * The syslog-rs crate can be redistributed and/or modified
 * under the terms of either of the following licenses:
 *
 *   1. EUROPEAN UNION PUBLIC LICENCE v. 1.2 EUPL © the European Union 2007, 2016 OR
 *
 *   2. the Mozilla Public License Version 2.0 (the “MPL”) OR
 *                     
 *   3. The MIT License (MIT)
 */

 
use std::{ffi::c_int, fmt, net::Ipv4Addr};

use crate::{IP_DROP_MEMBERSHIP, IPPROTO_IP, OptWMarker, So9IfInder, SockOptMarker, ip_mreqn};


#[repr(transparent)]
#[derive(Clone, Copy)]
pub struct IpDropMembership(ip_mreqn);

#[cfg(unix)]
impl fmt::Debug for IpDropMembership
{
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result 
    {
        f.debug_tuple("IpDropMembership").field(&self.0).finish()
    }
}

#[cfg(windows)]
impl fmt::Debug for IpDropMembership
{
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result 
    {
        f.debug_tuple("IpDropMembership").finish()
    }
}

impl SockOptMarker for IpDropMembership
{
    const SO_LEVEL: c_int = IPPROTO_IP;   
    const SO_OPTNAME: c_int = IP_DROP_MEMBERSHIP;

    /// (imr_multiaddr, imr_interface)
    type DataType = (Ipv4Addr, So9IfInder);
    type InputType = ();

    #[inline]
    fn from(_value: Self::InputType) -> Self 
    {
        panic!("IpDropMembership cannot be read");
    }

    #[inline]
    fn get(self) -> Self::DataType
    {
        panic!("IpDropMembership cannot be consumed");
    }

    #[inline]
    fn from_user(inp: Self::DataType) -> Self where Self: Sized
    {
        return Self( inp.1.into_ip_mreqn(&inp.0));
    }
}

impl OptWMarker for IpDropMembership {}