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extern crate winapi; use self::winapi::ctypes; use self::winapi::shared::minwindef; use self::winapi::um::winsock2; use std::io; use super::{htons, ntohs}; pub mod public { use super::winapi::ctypes; use super::winapi::shared::{in6addr, inaddr, ws2def, ws2ipdef}; use super::winapi::um::winsock2; use super::{htons, ntohs}; use std::io; use std::mem; use std::net::{Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6}; pub type CSocket = winsock2::SOCKET; pub type Buf = *const ctypes::c_char; pub type MutBuf = *mut ctypes::c_char; pub type BufLen = ctypes::c_int; pub type CouldFail = ctypes::c_int; pub type SockLen = ctypes::c_int; pub type MutSockLen = *mut ctypes::c_int; pub type SockAddr = ws2def::SOCKADDR; pub type SockAddrIn = ws2def::SOCKADDR_IN; pub type SockAddrIn6 = ws2ipdef::SOCKADDR_IN6_LH; pub type SockAddrStorage = ws2def::SOCKADDR_STORAGE; pub type SockAddrFamily = ws2def::ADDRESS_FAMILY; pub type SockAddrFamily6 = ws2def::ADDRESS_FAMILY; pub type InAddr = inaddr::IN_ADDR; pub type In6Addr = in6addr::IN6_ADDR; pub const AF_INET: ctypes::c_int = ws2def::AF_INET; pub const AF_INET6: ctypes::c_int = ws2def::AF_INET6; pub const SOCK_RAW: ctypes::c_int = winsock2::SOCK_RAW; pub const IPPROTO_IP: ctypes::c_int = ws2def::IPPROTO_IP; pub const IP_HDRINCL: ctypes::c_int = ws2ipdef::IP_HDRINCL; pub const IP_TTL: ctypes::c_int = ws2ipdef::IP_TTL; pub const IFF_UP: ctypes::c_int = 0x00000001; pub const IFF_BROADCAST: ctypes::c_int = 0x00000002; pub const IFF_LOOPBACK: ctypes::c_int = 0x00000004; pub const IFF_POINTTOPOINT: ctypes::c_int = 0x00000008; pub const IFF_POINTOPOINT: ctypes::c_int = IFF_POINTTOPOINT; pub const IFF_MULTICAST: ctypes::c_int = 0x00000010; pub const INVALID_SOCKET: CSocket = winsock2::INVALID_SOCKET; pub unsafe fn close(sock: CSocket) { let _ = winsock2::closesocket(sock); } pub unsafe fn socket(af: ctypes::c_int, sock: ctypes::c_int, proto: ctypes::c_int) -> CSocket { winsock2::socket(af, sock, proto) } pub unsafe fn setsockopt( socket: CSocket, level: ctypes::c_int, name: ctypes::c_int, value: Buf, option_len: SockLen, ) -> ctypes::c_int { winsock2::setsockopt(socket, level, name, value, option_len) } pub fn make_in6_addr(segments: [u16; 8]) -> In6Addr { let mut val: In6Addr = unsafe { mem::uninitialized() }; unsafe { *val.u.Word_mut() = [ htons(segments[0]), htons(segments[1]), htons(segments[2]), htons(segments[3]), htons(segments[4]), htons(segments[5]), htons(segments[6]), htons(segments[7]), ]; } val } pub fn addr_to_sockaddr(addr: SocketAddr, storage: &mut SockAddrStorage) -> SockLen { unsafe { let len = match addr { SocketAddr::V4(sa) => { let ip_addr = sa.ip(); let octets = ip_addr.octets(); let inaddr = super::mk_inaddr(u32::from_be( ((octets[0] as u32) << 24) | ((octets[1] as u32) << 16) | ((octets[2] as u32) << 8) | (octets[3] as u32), )); let storage = storage as *mut _ as *mut SockAddrIn; (*storage).sin_family = AF_INET as SockAddrFamily; (*storage).sin_port = htons(addr.port()); (*storage).sin_addr = inaddr; mem::size_of::<SockAddrIn>() } SocketAddr::V6(sa) => { let ip_addr = sa.ip(); let segments = ip_addr.segments(); let inaddr = make_in6_addr(segments); let storage = storage as *mut _ as *mut SockAddrIn6; (*storage).sin6_family = AF_INET6 as SockAddrFamily6; (*storage).sin6_port = htons(addr.port()); (*storage).sin6_addr = inaddr; (*(*storage).u.sin6_scope_id_mut()) = sa.scope_id(); mem::size_of::<SockAddrIn6>() } }; len as SockLen } } pub fn sockaddr_to_addr(storage: &SockAddrStorage, len: usize) -> io::Result<SocketAddr> { unsafe { match storage.ss_family as ctypes::c_int { AF_INET => { assert!(len as usize >= mem::size_of::<SockAddrIn>()); let storage: &SockAddrIn = mem::transmute(storage); let ip = super::ipv4_addr(storage.sin_addr); let a = (ip >> 24) as u8; let b = (ip >> 16) as u8; let c = (ip >> 8) as u8; let d = ip as u8; let sockaddrv4 = SocketAddrV4::new(Ipv4Addr::new(a, b, c, d), ntohs(storage.sin_port)); Ok(SocketAddr::V4(sockaddrv4)) } AF_INET6 => { assert!(len as usize >= mem::size_of::<SockAddrIn6>()); let storage: &SockAddrIn6 = mem::transmute(storage); let arr: [u16; 8] = mem::transmute(*storage.sin6_addr.u.Word()); let a = ntohs(arr[0]); let b = ntohs(arr[1]); let c = ntohs(arr[2]); let d = ntohs(arr[3]); let e = ntohs(arr[4]); let f = ntohs(arr[5]); let g = ntohs(arr[6]); let h = ntohs(arr[7]); let ip = Ipv6Addr::new(a, b, c, d, e, f, g, h); Ok(SocketAddr::V6(SocketAddrV6::new( ip, ntohs(storage.sin6_port), u32::from_be(storage.sin6_flowinfo), *storage.u.sin6_scope_id(), ))) } _ => Err(io::Error::new( io::ErrorKind::InvalidData, "expected IPv4 or IPv6 socket", )), } } } pub unsafe fn getsockopt( socket: CSocket, level: libc::c_int, name: libc::c_int, value: MutBuf, option_len: MutSockLen, ) -> libc::c_int { winsock2::getsockopt(socket, level, name, value, option_len) } } use self::public::*; use std::mem; #[inline(always)] pub fn ipv4_addr(addr: InAddr) -> u32 { unsafe { (*addr.S_un.S_addr() as u32).to_be() } } #[inline(always)] pub fn mk_inaddr(addr: u32) -> InAddr { let mut val: InAddr = unsafe { mem::uninitialized() }; unsafe { *val.S_un.S_addr_mut() = addr as minwindef::ULONG; } val } pub unsafe fn sendto( socket: CSocket, buf: Buf, len: BufLen, flags: ctypes::c_int, to: *const SockAddr, tolen: SockLen, ) -> CouldFail { winsock2::sendto(socket, buf, len, flags, to, tolen) } pub unsafe fn recvfrom( socket: CSocket, buf: MutBuf, len: BufLen, flags: ctypes::c_int, addr: *mut SockAddr, addrlen: *mut SockLen, ) -> CouldFail { winsock2::recvfrom(socket, buf, len, flags, addr, addrlen) } #[inline] pub fn retry<F>(f: &mut F) -> ctypes::c_int where F: FnMut() -> ctypes::c_int, { loop { let ret = f(); if ret != -1 || errno() as isize != winapi::shared::winerror::WSAEINTR as isize { return ret; } } } fn errno() -> i32 { io::Error::last_os_error().raw_os_error().unwrap() }