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addr.rs
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addr.rs
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use super::sa_family_t;
use cfg_if::cfg_if;
use crate::{Result, NixPath};
use crate::errno::Errno;
use memoffset::offset_of;
use std::{fmt, mem, net, ptr, slice};
use std::convert::TryInto;
use std::ffi::OsStr;
use std::hash::{Hash, Hasher};
use std::path::Path;
use std::os::unix::ffi::OsStrExt;
#[cfg(any(target_os = "android", target_os = "linux"))]
use crate::sys::socket::addr::netlink::NetlinkAddr;
#[cfg(any(target_os = "android", target_os = "linux"))]
use crate::sys::socket::addr::alg::AlgAddr;
#[cfg(any(target_os = "ios", target_os = "macos"))]
use std::os::unix::io::RawFd;
#[cfg(all(feature = "ioctl", any(target_os = "ios", target_os = "macos")))]
use crate::sys::socket::addr::sys_control::SysControlAddr;
#[cfg(any(target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "linux",
target_os = "macos",
target_os = "illumos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "haiku",
target_os = "fuchsia"))]
#[cfg(feature = "net")]
pub use self::datalink::LinkAddr;
#[cfg(any(target_os = "android", target_os = "linux"))]
pub use self::vsock::VsockAddr;
/// Convert a std::net::Ipv4Addr into the libc form.
#[cfg(feature = "net")]
pub(crate) fn ipv4addr_to_libc(addr: net::Ipv4Addr) -> libc::in_addr {
let octets = addr.octets();
libc::in_addr {
s_addr: u32::to_be(((octets[0] as u32) << 24) |
((octets[1] as u32) << 16) |
((octets[2] as u32) << 8) |
(octets[3] as u32))
}
}
/// Convert a std::net::Ipv6Addr into the libc form.
#[cfg(feature = "net")]
pub(crate) const fn ipv6addr_to_libc(addr: &net::Ipv6Addr) -> libc::in6_addr {
libc::in6_addr {
s6_addr: addr.octets()
}
}
/// These constants specify the protocol family to be used
/// in [`socket`](fn.socket.html) and [`socketpair`](fn.socketpair.html)
///
/// # References
///
/// [address_families(7)](https://man7.org/linux/man-pages/man7/address_families.7.html)
// Should this be u8?
#[repr(i32)]
#[non_exhaustive]
#[derive(Copy, Clone, PartialEq, Eq, Debug, Hash)]
pub enum AddressFamily {
/// Local communication (see [`unix(7)`](https://man7.org/linux/man-pages/man7/unix.7.html))
Unix = libc::AF_UNIX,
/// IPv4 Internet protocols (see [`ip(7)`](https://man7.org/linux/man-pages/man7/ip.7.html))
Inet = libc::AF_INET,
/// IPv6 Internet protocols (see [`ipv6(7)`](https://man7.org/linux/man-pages/man7/ipv6.7.html))
Inet6 = libc::AF_INET6,
/// Kernel user interface device (see [`netlink(7)`](https://man7.org/linux/man-pages/man7/netlink.7.html))
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Netlink = libc::AF_NETLINK,
/// Low level packet interface (see [`packet(7)`](https://man7.org/linux/man-pages/man7/packet.7.html))
#[cfg(any(target_os = "android",
target_os = "linux",
target_os = "illumos",
target_os = "fuchsia",
target_os = "solaris"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Packet = libc::AF_PACKET,
/// KEXT Controls and Notifications
#[cfg(any(target_os = "ios", target_os = "macos"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
System = libc::AF_SYSTEM,
/// Amateur radio AX.25 protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ax25 = libc::AF_AX25,
/// IPX - Novell protocols
Ipx = libc::AF_IPX,
/// AppleTalk
AppleTalk = libc::AF_APPLETALK,
/// AX.25 packet layer protocol.
/// (see [netrom(4)](https://www.unix.com/man-page/linux/4/netrom/))
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
NetRom = libc::AF_NETROM,
/// Can't be used for creating sockets; mostly used for bridge
/// links in
/// [rtnetlink(7)](https://man7.org/linux/man-pages/man7/rtnetlink.7.html)
/// protocol commands.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Bridge = libc::AF_BRIDGE,
/// Access to raw ATM PVCs
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
AtmPvc = libc::AF_ATMPVC,
/// ITU-T X.25 / ISO-8208 protocol (see [`x25(7)`](https://man7.org/linux/man-pages/man7/x25.7.html))
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
X25 = libc::AF_X25,
/// RATS (Radio Amateur Telecommunications Society) Open
/// Systems environment (ROSE) AX.25 packet layer protocol.
/// (see [netrom(4)](https://www.unix.com/man-page/linux/4/netrom/))
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Rose = libc::AF_ROSE,
/// DECet protocol sockets.
#[cfg(not(target_os = "haiku"))]
Decnet = libc::AF_DECnet,
/// Reserved for "802.2LLC project"; never used.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
NetBeui = libc::AF_NETBEUI,
/// This was a short-lived (between Linux 2.1.30 and
/// 2.1.99pre2) protocol family for firewall upcalls.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Security = libc::AF_SECURITY,
/// Key management protocol.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Key = libc::AF_KEY,
#[allow(missing_docs)] // Not documented anywhere that I can find
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ash = libc::AF_ASH,
/// Acorn Econet protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Econet = libc::AF_ECONET,
/// Access to ATM Switched Virtual Circuits
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
AtmSvc = libc::AF_ATMSVC,
/// Reliable Datagram Sockets (RDS) protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Rds = libc::AF_RDS,
/// IBM SNA
#[cfg(not(target_os = "haiku"))]
Sna = libc::AF_SNA,
/// Socket interface over IrDA
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Irda = libc::AF_IRDA,
/// Generic PPP transport layer, for setting up L2 tunnels (L2TP and PPPoE)
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Pppox = libc::AF_PPPOX,
/// Legacy protocol for wide area network (WAN) connectivity that was used
/// by Sangoma WAN cards
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Wanpipe = libc::AF_WANPIPE,
/// Logical link control (IEEE 802.2 LLC) protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Llc = libc::AF_LLC,
/// InfiniBand native addressing
#[cfg(all(target_os = "linux", not(target_env = "uclibc")))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ib = libc::AF_IB,
/// Multiprotocol Label Switching
#[cfg(all(target_os = "linux", not(target_env = "uclibc")))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Mpls = libc::AF_MPLS,
/// Controller Area Network automotive bus protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Can = libc::AF_CAN,
/// TIPC, "cluster domain sockets" protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Tipc = libc::AF_TIPC,
/// Bluetooth low-level socket protocol
#[cfg(not(any(target_os = "illumos",
target_os = "ios",
target_os = "macos",
target_os = "solaris")))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Bluetooth = libc::AF_BLUETOOTH,
/// IUCV (inter-user communication vehicle) z/VM protocol for
/// hypervisor-guest interaction
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Iucv = libc::AF_IUCV,
/// Rx, Andrew File System remote procedure call protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
RxRpc = libc::AF_RXRPC,
/// New "modular ISDN" driver interface protocol
#[cfg(not(any(target_os = "illumos", target_os = "solaris", target_os = "haiku")))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Isdn = libc::AF_ISDN,
/// Nokia cellular modem IPC/RPC interface
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Phonet = libc::AF_PHONET,
/// IEEE 802.15.4 WPAN (wireless personal area network) raw packet protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ieee802154 = libc::AF_IEEE802154,
/// Ericsson's Communication CPU to Application CPU interface (CAIF)
/// protocol.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Caif = libc::AF_CAIF,
/// Interface to kernel crypto API
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Alg = libc::AF_ALG,
/// Near field communication
#[cfg(target_os = "linux")]
#[cfg_attr(docsrs, doc(cfg(all())))]
Nfc = libc::AF_NFC,
/// VMWare VSockets protocol for hypervisor-guest interaction.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Vsock = libc::AF_VSOCK,
/// ARPANet IMP addresses
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
ImpLink = libc::AF_IMPLINK,
/// PUP protocols, e.g. BSP
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Pup = libc::AF_PUP,
/// MIT CHAOS protocols
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Chaos = libc::AF_CHAOS,
/// Novell and Xerox protocol
#[cfg(any(target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ns = libc::AF_NS,
#[allow(missing_docs)] // Not documented anywhere that I can find
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Iso = libc::AF_ISO,
/// Bell Labs virtual circuit switch ?
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Datakit = libc::AF_DATAKIT,
/// CCITT protocols, X.25 etc
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ccitt = libc::AF_CCITT,
/// DEC Direct data link interface
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Dli = libc::AF_DLI,
#[allow(missing_docs)] // Not documented anywhere that I can find
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Lat = libc::AF_LAT,
/// NSC Hyperchannel
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Hylink = libc::AF_HYLINK,
/// Link layer interface
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "illumos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Link = libc::AF_LINK,
/// connection-oriented IP, aka ST II
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Coip = libc::AF_COIP,
/// Computer Network Technology
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Cnt = libc::AF_CNT,
/// Native ATM access
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Natm = libc::AF_NATM,
/// Unspecified address family, (see [`getaddrinfo(3)`](https://man7.org/linux/man-pages/man3/getaddrinfo.3.html))
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Unspec = libc::AF_UNSPEC,
}
impl AddressFamily {
/// Create a new `AddressFamily` from an integer value retrieved from `libc`, usually from
/// the `sa_family` field of a `sockaddr`.
///
/// Currently only supports these address families: Unix, Inet (v4 & v6), Netlink, Link/Packet
/// and System. Returns None for unsupported or unknown address families.
pub const fn from_i32(family: i32) -> Option<AddressFamily> {
match family {
libc::AF_UNIX => Some(AddressFamily::Unix),
libc::AF_INET => Some(AddressFamily::Inet),
libc::AF_INET6 => Some(AddressFamily::Inet6),
#[cfg(any(target_os = "android", target_os = "linux"))]
libc::AF_NETLINK => Some(AddressFamily::Netlink),
#[cfg(any(target_os = "macos", target_os = "macos"))]
libc::AF_SYSTEM => Some(AddressFamily::System),
#[cfg(any(target_os = "android", target_os = "linux"))]
libc::AF_PACKET => Some(AddressFamily::Packet),
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "illumos",
target_os = "openbsd"))]
libc::AF_LINK => Some(AddressFamily::Link),
#[cfg(any(target_os = "android", target_os = "linux"))]
libc::AF_VSOCK => Some(AddressFamily::Vsock),
_ => None
}
}
}
feature! {
#![feature = "net"]
#[deprecated(
since = "0.24.0",
note = "use SockaddrIn, SockaddrIn6, or SockaddrStorage instead"
)]
#[allow(missing_docs)] // Since they're all deprecated anyway
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
pub enum InetAddr {
V4(libc::sockaddr_in),
V6(libc::sockaddr_in6),
}
#[allow(missing_docs)] // It's deprecated anyway
#[allow(deprecated)]
impl InetAddr {
#[allow(clippy::needless_update)] // It isn't needless on all OSes
pub fn from_std(std: &net::SocketAddr) -> InetAddr {
match *std {
net::SocketAddr::V4(ref addr) => {
InetAddr::V4(libc::sockaddr_in {
#[cfg(any(target_os = "dragonfly", target_os = "freebsd",
target_os = "haiku", target_os = "hermit",
target_os = "ios", target_os = "macos",
target_os = "netbsd", target_os = "openbsd"))]
sin_len: mem::size_of::<libc::sockaddr_in>() as u8,
sin_family: AddressFamily::Inet as sa_family_t,
sin_port: addr.port().to_be(), // network byte order
sin_addr: Ipv4Addr::from_std(addr.ip()).0,
.. unsafe { mem::zeroed() }
})
}
net::SocketAddr::V6(ref addr) => {
InetAddr::V6(libc::sockaddr_in6 {
#[cfg(any(target_os = "dragonfly", target_os = "freebsd",
target_os = "haiku", target_os = "hermit",
target_os = "ios", target_os = "macos",
target_os = "netbsd", target_os = "openbsd"))]
sin6_len: mem::size_of::<libc::sockaddr_in6>() as u8,
sin6_family: AddressFamily::Inet6 as sa_family_t,
sin6_port: addr.port().to_be(), // network byte order
sin6_addr: Ipv6Addr::from_std(addr.ip()).0,
sin6_flowinfo: addr.flowinfo(), // host byte order
sin6_scope_id: addr.scope_id(), // host byte order
.. unsafe { mem::zeroed() }
})
}
}
}
#[allow(clippy::needless_update)] // It isn't needless on all OSes
pub fn new(ip: IpAddr, port: u16) -> InetAddr {
match ip {
IpAddr::V4(ref ip) => {
InetAddr::V4(libc::sockaddr_in {
sin_family: AddressFamily::Inet as sa_family_t,
sin_port: port.to_be(),
sin_addr: ip.0,
.. unsafe { mem::zeroed() }
})
}
IpAddr::V6(ref ip) => {
InetAddr::V6(libc::sockaddr_in6 {
sin6_family: AddressFamily::Inet6 as sa_family_t,
sin6_port: port.to_be(),
sin6_addr: ip.0,
.. unsafe { mem::zeroed() }
})
}
}
}
/// Gets the IP address associated with this socket address.
pub const fn ip(&self) -> IpAddr {
match *self {
InetAddr::V4(ref sa) => IpAddr::V4(Ipv4Addr(sa.sin_addr)),
InetAddr::V6(ref sa) => IpAddr::V6(Ipv6Addr(sa.sin6_addr)),
}
}
/// Gets the port number associated with this socket address
pub const fn port(&self) -> u16 {
match *self {
InetAddr::V6(ref sa) => u16::from_be(sa.sin6_port),
InetAddr::V4(ref sa) => u16::from_be(sa.sin_port),
}
}
pub fn to_std(&self) -> net::SocketAddr {
match *self {
InetAddr::V4(ref sa) => net::SocketAddr::V4(
net::SocketAddrV4::new(
Ipv4Addr(sa.sin_addr).to_std(),
self.port())),
InetAddr::V6(ref sa) => net::SocketAddr::V6(
net::SocketAddrV6::new(
Ipv6Addr(sa.sin6_addr).to_std(),
self.port(),
sa.sin6_flowinfo,
sa.sin6_scope_id)),
}
}
#[deprecated(since = "0.23.0", note = "use .to_string() instead")]
pub fn to_str(&self) -> String {
format!("{}", self)
}
}
#[allow(deprecated)]
impl fmt::Display for InetAddr {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
InetAddr::V4(_) => write!(f, "{}:{}", self.ip(), self.port()),
InetAddr::V6(_) => write!(f, "[{}]:{}", self.ip(), self.port()),
}
}
}
/*
*
* ===== IpAddr =====
*
*/
#[allow(missing_docs)] // Since they're all deprecated anyway
#[allow(deprecated)]
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
#[deprecated(
since = "0.24.0",
note = "Use std::net::IpAddr instead"
)]
pub enum IpAddr {
V4(Ipv4Addr),
V6(Ipv6Addr),
}
#[allow(deprecated)]
#[allow(missing_docs)] // Since they're all deprecated anyway
impl IpAddr {
/// Create a new IpAddr that contains an IPv4 address.
///
/// The result will represent the IP address a.b.c.d
pub const fn new_v4(a: u8, b: u8, c: u8, d: u8) -> IpAddr {
IpAddr::V4(Ipv4Addr::new(a, b, c, d))
}
/// Create a new IpAddr that contains an IPv6 address.
///
/// The result will represent the IP address a:b:c:d:e:f
#[allow(clippy::many_single_char_names)]
#[allow(clippy::too_many_arguments)]
pub const fn new_v6(a: u16, b: u16, c: u16, d: u16, e: u16, f: u16, g: u16, h: u16) -> IpAddr {
IpAddr::V6(Ipv6Addr::new(a, b, c, d, e, f, g, h))
}
pub fn from_std(std: &net::IpAddr) -> IpAddr {
match *std {
net::IpAddr::V4(ref std) => IpAddr::V4(Ipv4Addr::from_std(std)),
net::IpAddr::V6(ref std) => IpAddr::V6(Ipv6Addr::from_std(std)),
}
}
pub const fn to_std(&self) -> net::IpAddr {
match *self {
IpAddr::V4(ref ip) => net::IpAddr::V4(ip.to_std()),
IpAddr::V6(ref ip) => net::IpAddr::V6(ip.to_std()),
}
}
}
#[allow(deprecated)]
impl fmt::Display for IpAddr {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
IpAddr::V4(ref v4) => v4.fmt(f),
IpAddr::V6(ref v6) => v6.fmt(f)
}
}
}
/*
*
* ===== Ipv4Addr =====
*
*/
#[deprecated(
since = "0.24.0",
note = "Use std::net::Ipv4Addr instead"
)]
#[allow(missing_docs)] // Since they're all deprecated anyway
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
#[repr(transparent)]
pub struct Ipv4Addr(pub libc::in_addr);
#[allow(deprecated)]
#[allow(missing_docs)] // Since they're all deprecated anyway
impl Ipv4Addr {
#[allow(clippy::identity_op)] // More readable this way
pub const fn new(a: u8, b: u8, c: u8, d: u8) -> Ipv4Addr {
let ip = (((a as u32) << 24) |
((b as u32) << 16) |
((c as u32) << 8) |
((d as u32) << 0)).to_be();
Ipv4Addr(libc::in_addr { s_addr: ip })
}
// Use pass by reference for symmetry with Ipv6Addr::from_std
#[allow(clippy::trivially_copy_pass_by_ref)]
pub fn from_std(std: &net::Ipv4Addr) -> Ipv4Addr {
let bits = std.octets();
Ipv4Addr::new(bits[0], bits[1], bits[2], bits[3])
}
pub const fn any() -> Ipv4Addr {
Ipv4Addr(libc::in_addr { s_addr: libc::INADDR_ANY })
}
pub const fn octets(self) -> [u8; 4] {
let bits = u32::from_be(self.0.s_addr);
[(bits >> 24) as u8, (bits >> 16) as u8, (bits >> 8) as u8, bits as u8]
}
pub const fn to_std(self) -> net::Ipv4Addr {
let bits = self.octets();
net::Ipv4Addr::new(bits[0], bits[1], bits[2], bits[3])
}
}
#[allow(deprecated)]
impl fmt::Display for Ipv4Addr {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
let octets = self.octets();
write!(fmt, "{}.{}.{}.{}", octets[0], octets[1], octets[2], octets[3])
}
}
/*
*
* ===== Ipv6Addr =====
*
*/
#[deprecated(
since = "0.24.0",
note = "Use std::net::Ipv6Addr instead"
)]
#[allow(missing_docs)] // Since they're all deprecated anyway
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
#[repr(transparent)]
pub struct Ipv6Addr(pub libc::in6_addr);
// Note that IPv6 addresses are stored in big endian order on all architectures.
// See https://tools.ietf.org/html/rfc1700 or consult your favorite search
// engine.
macro_rules! to_u8_array {
($($num:ident),*) => {
[ $(($num>>8) as u8, ($num&0xff) as u8,)* ]
}
}
macro_rules! to_u16_array {
($slf:ident, $($first:expr, $second:expr),*) => {
[$( (($slf.0.s6_addr[$first] as u16) << 8) + $slf.0.s6_addr[$second] as u16,)*]
}
}
#[allow(deprecated)]
#[allow(missing_docs)] // Since they're all deprecated anyway
impl Ipv6Addr {
#[allow(clippy::many_single_char_names)]
#[allow(clippy::too_many_arguments)]
pub const fn new(a: u16, b: u16, c: u16, d: u16, e: u16, f: u16, g: u16, h: u16) -> Ipv6Addr {
Ipv6Addr(libc::in6_addr{s6_addr: to_u8_array!(a,b,c,d,e,f,g,h)})
}
pub fn from_std(std: &net::Ipv6Addr) -> Ipv6Addr {
let s = std.segments();
Ipv6Addr::new(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7])
}
/// Return the eight 16-bit segments that make up this address
pub const fn segments(&self) -> [u16; 8] {
to_u16_array!(self, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15)
}
pub const fn to_std(&self) -> net::Ipv6Addr {
let s = self.segments();
net::Ipv6Addr::new(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7])
}
}
#[allow(deprecated)]
impl fmt::Display for Ipv6Addr {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
self.to_std().fmt(fmt)
}
}
}
/// A wrapper around `sockaddr_un`.
#[derive(Clone, Copy, Debug)]
#[repr(C)]
pub struct UnixAddr {
// INVARIANT: sun & sun_len are valid as defined by docs for from_raw_parts
sun: libc::sockaddr_un,
/// The length of the valid part of `sun`, including the sun_family field
/// but excluding any trailing nul.
// On the BSDs, this field is built into sun
#[cfg(any(target_os = "android",
target_os = "fuchsia",
target_os = "illumos",
target_os = "linux"
))]
sun_len: u8
}
// linux man page unix(7) says there are 3 kinds of unix socket:
// pathname: addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(sun_path) + 1
// unnamed: addrlen = sizeof(sa_family_t)
// abstract: addren > sizeof(sa_family_t), name = sun_path[..(addrlen - sizeof(sa_family_t))]
//
// what we call path_len = addrlen - offsetof(struct sockaddr_un, sun_path)
#[derive(PartialEq, Eq, Hash)]
enum UnixAddrKind<'a> {
Pathname(&'a Path),
Unnamed,
#[cfg(any(target_os = "android", target_os = "linux"))]
Abstract(&'a [u8]),
}
impl<'a> UnixAddrKind<'a> {
/// Safety: sun & sun_len must be valid
unsafe fn get(sun: &'a libc::sockaddr_un, sun_len: u8) -> Self {
assert!(sun_len as usize >= offset_of!(libc::sockaddr_un, sun_path));
let path_len = sun_len as usize - offset_of!(libc::sockaddr_un, sun_path);
if path_len == 0 {
return Self::Unnamed;
}
#[cfg(any(target_os = "android", target_os = "linux"))]
if sun.sun_path[0] == 0 {
let name =
slice::from_raw_parts(sun.sun_path.as_ptr().add(1) as *const u8, path_len - 1);
return Self::Abstract(name);
}
let pathname = slice::from_raw_parts(sun.sun_path.as_ptr() as *const u8, path_len);
if pathname.last() == Some(&0) {
// A trailing NUL is not considered part of the path, and it does
// not need to be included in the addrlen passed to functions like
// bind(). However, Linux adds a trailing NUL, even if one was not
// originally present, when returning addrs from functions like
// getsockname() (the BSDs do not do that). So we need to filter
// out any trailing NUL here, so sockaddrs can round-trip through
// the kernel and still compare equal.
Self::Pathname(Path::new(OsStr::from_bytes(&pathname[0..pathname.len() - 1])))
} else {
Self::Pathname(Path::new(OsStr::from_bytes(pathname)))
}
}
}
impl UnixAddr {
/// Create a new sockaddr_un representing a filesystem path.
pub fn new<P: ?Sized + NixPath>(path: &P) -> Result<UnixAddr> {
path.with_nix_path(|cstr| {
unsafe {
let mut ret = libc::sockaddr_un {
sun_family: AddressFamily::Unix as sa_family_t,
.. mem::zeroed()
};
let bytes = cstr.to_bytes();
if bytes.len() >= ret.sun_path.len() {
return Err(Errno::ENAMETOOLONG);
}
let sun_len = (bytes.len() +
offset_of!(libc::sockaddr_un, sun_path)).try_into()
.unwrap();
#[cfg(any(target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"))]
{
ret.sun_len = sun_len;
}
ptr::copy_nonoverlapping(bytes.as_ptr(),
ret.sun_path.as_mut_ptr() as *mut u8,
bytes.len());
Ok(UnixAddr::from_raw_parts(ret, sun_len))
}
})?
}
/// Create a new `sockaddr_un` representing an address in the "abstract namespace".
///
/// The leading nul byte for the abstract namespace is automatically added;
/// thus the input `path` is expected to be the bare name, not NUL-prefixed.
/// This is a Linux-specific extension, primarily used to allow chrooted
/// processes to communicate with processes having a different filesystem view.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn new_abstract(path: &[u8]) -> Result<UnixAddr> {
unsafe {
let mut ret = libc::sockaddr_un {
sun_family: AddressFamily::Unix as sa_family_t,
.. mem::zeroed()
};
if path.len() >= ret.sun_path.len() {
return Err(Errno::ENAMETOOLONG);
}
let sun_len = (path.len() +
1 +
offset_of!(libc::sockaddr_un, sun_path)).try_into()
.unwrap();
// Abstract addresses are represented by sun_path[0] ==
// b'\0', so copy starting one byte in.
ptr::copy_nonoverlapping(path.as_ptr(),
ret.sun_path.as_mut_ptr().offset(1) as *mut u8,
path.len());
Ok(UnixAddr::from_raw_parts(ret, sun_len))
}
}
/// Create a UnixAddr from a raw `sockaddr_un` struct and a size. `sun_len`
/// is the size of the valid portion of the struct, excluding any trailing
/// NUL.
///
/// # Safety
/// This pair of sockaddr_un & sun_len must be a valid unix addr, which
/// means:
/// - sun_len >= offset_of(sockaddr_un, sun_path)
/// - sun_len <= sockaddr_un.sun_path.len() - offset_of(sockaddr_un, sun_path)
/// - if this is a unix addr with a pathname, sun.sun_path is a
/// fs path, not necessarily nul-terminated.
pub(crate) unsafe fn from_raw_parts(sun: libc::sockaddr_un, sun_len: u8) -> UnixAddr {
cfg_if!{
if #[cfg(any(target_os = "android",
target_os = "fuchsia",
target_os = "illumos",
target_os = "linux"
))]
{
UnixAddr { sun, sun_len }
} else {
assert_eq!(sun_len, sun.sun_len);
UnixAddr {sun}
}
}
}
fn kind(&self) -> UnixAddrKind<'_> {
// SAFETY: our sockaddr is always valid because of the invariant on the struct
unsafe { UnixAddrKind::get(&self.sun, self.sun_len()) }
}
/// If this address represents a filesystem path, return that path.
pub fn path(&self) -> Option<&Path> {
match self.kind() {
UnixAddrKind::Pathname(path) => Some(path),
_ => None,
}
}
/// If this address represents an abstract socket, return its name.
///
/// For abstract sockets only the bare name is returned, without the
/// leading NUL byte. `None` is returned for unnamed or path-backed sockets.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn as_abstract(&self) -> Option<&[u8]> {
match self.kind() {
UnixAddrKind::Abstract(name) => Some(name),
_ => None,
}
}
/// Returns the addrlen of this socket - `offsetof(struct sockaddr_un, sun_path)`
#[inline]
pub fn path_len(&self) -> usize {
self.sun_len() as usize - offset_of!(libc::sockaddr_un, sun_path)
}
/// Returns a pointer to the raw `sockaddr_un` struct
#[inline]
pub fn as_ptr(&self) -> *const libc::sockaddr_un {
&self.sun
}
/// Returns a mutable pointer to the raw `sockaddr_un` struct
#[inline]
pub fn as_mut_ptr(&mut self) -> *mut libc::sockaddr_un {
&mut self.sun
}
fn sun_len(&self)-> u8 {
cfg_if!{
if #[cfg(any(target_os = "android",
target_os = "fuchsia",
target_os = "illumos",
target_os = "linux"
))]
{
self.sun_len
} else {
self.sun.sun_len
}
}
}
}
impl private::SockaddrLikePriv for UnixAddr {}
impl SockaddrLike for UnixAddr {
#[cfg(any(target_os = "android",
target_os = "fuchsia",
target_os = "illumos",
target_os = "linux"
))]
fn len(&self) -> libc::socklen_t {
self.sun_len.into()
}
unsafe fn from_raw(addr: *const libc::sockaddr, len: Option<libc::socklen_t>)
-> Option<Self> where Self: Sized
{
if let Some(l) = len {
if (l as usize) < offset_of!(libc::sockaddr_un, sun_path) ||
l > u8::MAX as libc::socklen_t
{
return None;
}
}
if (*addr).sa_family as i32 != libc::AF_UNIX as i32 {
return None;
}
let mut su: libc::sockaddr_un = mem::zeroed();
let sup = &mut su as *mut libc::sockaddr_un as *mut u8;
cfg_if!{
if #[cfg(any(target_os = "android",
target_os = "fuchsia",
target_os = "illumos",
target_os = "linux"
))] {
let su_len = len.unwrap_or(
mem::size_of::<libc::sockaddr_un>() as libc::socklen_t
);
} else {
let su_len = len.unwrap_or((*addr).sa_len as libc::socklen_t);
}
};
ptr::copy(addr as *const u8, sup, su_len as usize);
Some(Self::from_raw_parts(su, su_len as u8))
}
fn size() -> libc::socklen_t where Self: Sized {
mem::size_of::<libc::sockaddr_un>() as libc::socklen_t
}
}
impl AsRef<libc::sockaddr_un> for UnixAddr {
fn as_ref(&self) -> &libc::sockaddr_un {
&self.sun
}
}
#[cfg(any(target_os = "android", target_os = "linux"))]
fn fmt_abstract(abs: &[u8], f: &mut fmt::Formatter) -> fmt::Result {
use fmt::Write;
f.write_str("@\"")?;
for &b in abs {
use fmt::Display;
char::from(b).escape_default().fmt(f)?;
}
f.write_char('"')?;
Ok(())
}
impl fmt::Display for UnixAddr {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self.kind() {
UnixAddrKind::Pathname(path) => path.display().fmt(f),
UnixAddrKind::Unnamed => f.pad("<unbound UNIX socket>"),
#[cfg(any(target_os = "android", target_os = "linux"))]
UnixAddrKind::Abstract(name) => fmt_abstract(name, f),
}
}
}
impl PartialEq for UnixAddr {
fn eq(&self, other: &UnixAddr) -> bool {
self.kind() == other.kind()
}
}
impl Eq for UnixAddr {}