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//! The BSD sockets API requires us to read the `ss_family` field before
//! we can interpret the rest of a `sockaddr` produced by the kernel.
use super::super::c;
use super::addr::SocketAddrStorage;
#[cfg(unix)]
use super::addr::SocketAddrUnix;
use super::ext::{in6_addr_new, in_addr_new, sockaddr_in6_new};
use crate::net::{SocketAddrAny, SocketAddrV4, SocketAddrV6};
use core::mem::size_of;
pub(crate) unsafe fn write_sockaddr(
addr: &SocketAddrAny,
storage: *mut SocketAddrStorage,
) -> usize {
match addr {
SocketAddrAny::V4(v4) => write_sockaddr_v4(v4, storage),
SocketAddrAny::V6(v6) => write_sockaddr_v6(v6, storage),
#[cfg(unix)]
SocketAddrAny::Unix(unix) => write_sockaddr_unix(unix, storage),
}
}
pub(crate) unsafe fn encode_sockaddr_v4(v4: &SocketAddrV4) -> c::sockaddr_in {
c::sockaddr_in {
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
))]
sin_len: size_of::<c::sockaddr_in>() as _,
sin_family: c::AF_INET as _,
sin_port: u16::to_be(v4.port()),
sin_addr: in_addr_new(u32::from_ne_bytes(v4.ip().octets())),
sin_zero: [0; 8_usize],
}
}
unsafe fn write_sockaddr_v4(v4: &SocketAddrV4, storage: *mut SocketAddrStorage) -> usize {
let encoded = encode_sockaddr_v4(v4);
core::ptr::write(storage.cast(), encoded);
size_of::<c::sockaddr_in>()
}
pub(crate) unsafe fn encode_sockaddr_v6(v6: &SocketAddrV6) -> c::sockaddr_in6 {
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
))]
{
sockaddr_in6_new(
size_of::<c::sockaddr_in6>() as _,
c::AF_INET6 as _,
u16::to_be(v6.port()),
u32::to_be(v6.flowinfo()),
in6_addr_new(v6.ip().octets()),
v6.scope_id(),
)
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
)))]
{
sockaddr_in6_new(
c::AF_INET6 as _,
u16::to_be(v6.port()),
u32::to_be(v6.flowinfo()),
in6_addr_new(v6.ip().octets()),
v6.scope_id(),
)
}
}
unsafe fn write_sockaddr_v6(v6: &SocketAddrV6, storage: *mut SocketAddrStorage) -> usize {
let encoded = encode_sockaddr_v6(v6);
core::ptr::write(storage.cast(), encoded);
size_of::<c::sockaddr_in6>()
}
#[cfg(unix)]
unsafe fn write_sockaddr_unix(unix: &SocketAddrUnix, storage: *mut SocketAddrStorage) -> usize {
core::ptr::write(storage.cast(), unix.unix);
unix.len()
}
|
