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|
use std::{mem, ptr};
use libc::{c_int, socklen_t};
use fcntl::{Fd, fcntl, F_SETFL, F_SETFD, FD_CLOEXEC, O_NONBLOCK};
use errno::{SysResult, SysError, from_ffi};
use features;
pub use libc::{in_addr, sockaddr_in, sockaddr_in6, sockaddr_un, sa_family_t};
pub use self::consts::*;
mod ffi {
use libc::{c_int, c_void, socklen_t};
pub use libc::{socket, listen, bind, accept, connect, setsockopt};
extern {
pub fn getsockopt(
sockfd: c_int,
level: c_int,
optname: c_int,
optval: *mut c_void,
optlen: *mut socklen_t) -> c_int;
}
}
// Extra flags - Supported by Linux 2.6.27, normalized on other platforms
bitflags!(
flags SockFlag: c_int {
static SOCK_NONBLOCK = 0o0004000,
static SOCK_CLOEXEC = 0o2000000
}
)
pub enum SockAddr {
SockIpV4(sockaddr_in),
SockIpV6(sockaddr_in6),
SockUnix(sockaddr_un)
}
#[cfg(target_os = "linux")]
mod consts {
use libc::{c_int};
pub type AddressFamily = c_int;
pub static AF_UNIX: AddressFamily = 1;
pub static AF_LOCAL: AddressFamily = AF_UNIX;
pub static AF_INET: AddressFamily = 2;
pub static AF_INET6: AddressFamily = 10;
pub type SockType = c_int;
pub static SOCK_STREAM: SockType = 1;
pub static SOCK_DGRAM: SockType = 2;
pub static SOCK_SEQPACKET: SockType = 5;
pub static SOCK_RAW: SockType = 3;
pub static SOCK_RDM: SockType = 4;
pub type SockLevel = c_int;
pub static SOL_IP: SockLevel = 0;
pub static SOL_SOCKET: SockLevel = 1;
pub static SOL_TCP: SockLevel = 6;
pub static SOL_UDP: SockLevel = 17;
pub static SOL_IPV6: SockLevel = 41;
pub type SockOpt = c_int;
pub static SO_ACCEPTCONN: SockOpt = 30;
pub static SO_BINDTODEVICE: SockOpt = 25;
pub static SO_BROADCAST: SockOpt = 6;
pub static SO_BSDCOMPAT: SockOpt = 14;
pub static SO_DEBUG: SockOpt = 1;
pub static SO_DOMAIN: SockOpt = 39;
pub static SO_ERROR: SockOpt = 4;
pub static SO_DONTROUTE: SockOpt = 5;
pub static SO_KEEPALIVE: SockOpt = 9;
pub static SO_LINGER: SockOpt = 13;
pub static SO_MARK: SockOpt = 36;
pub static SO_OOBINLINE: SockOpt = 10;
pub static SO_PASSCRED: SockOpt = 16;
pub static SO_PEEK_OFF: SockOpt = 42;
pub static SO_PEERCRED: SockOpt = 17;
pub static SO_PRIORITY: SockOpt = 12;
pub static SO_PROTOCOL: SockOpt = 38;
pub static SO_RCVBUF: SockOpt = 8;
pub static SO_RCVBUFFORCE: SockOpt = 33;
pub static SO_RCVLOWAT: SockOpt = 18;
pub static SO_SNDLOWAT: SockOpt = 19;
pub static SO_RCVTIMEO: SockOpt = 20;
pub static SO_SNDTIMEO: SockOpt = 21;
pub static SO_REUSEADDR: SockOpt = 2;
pub static SO_RXQ_OVFL: SockOpt = 40;
pub static SO_SNDBUF: SockOpt = 7;
pub static SO_SNDBUFFORCE: SockOpt = 32;
pub static SO_TIMESTAMP: SockOpt = 29;
pub static SO_TYPE: SockOpt = 3;
pub static SO_BUSY_POLL: SockOpt = 46;
}
#[cfg(any(target_os = "macos", target_os = "ios"))]
mod consts {
use libc::{c_int};
pub type AddressFamily = c_int;
pub static AF_UNIX: AddressFamily = 1;
pub static AF_LOCAL: AddressFamily = AF_UNIX;
pub static AF_INET: AddressFamily = 2;
pub static AF_INET6: AddressFamily = 30;
pub type SockType = c_int;
pub static SOCK_STREAM: SockType = 1;
pub static SOCK_DGRAM: SockType = 2;
pub static SOCK_SEQPACKET: SockType = 5;
pub static SOCK_RAW: SockType = 3;
pub static SOCK_RDM: SockType = 4;
pub type SockLevel = c_int;
pub static SOL_SOCKET: SockLevel = 0xffff;
pub type SockOpt = c_int;
pub static SO_ACCEPTCONN: SockOpt = 0x0002;
pub static SO_BROADCAST: SockOpt = 0x0020;
pub static SO_DEBUG: SockOpt = 0x0001;
pub static SO_DONTTRUNC: SockOpt = 0x2000;
pub static SO_ERROR: SockOpt = 0x1007;
pub static SO_DONTROUTE: SockOpt = 0x0010;
pub static SO_KEEPALIVE: SockOpt = 0x0008;
pub static SO_LABEL: SockOpt = 0x1010;
pub static SO_LINGER: SockOpt = 0x0080;
pub static SO_NREAD: SockOpt = 0x1020;
pub static SO_NKE: SockOpt = 0x1021;
pub static SO_NOSIGPIPE: SockOpt = 0x1022;
pub static SO_NOADDRERR: SockOpt = 0x1023;
pub static SO_NOTIFYCONFLICT: SockOpt = 0x1026;
pub static SO_NP_EXTENSIONS: SockOpt = 0x1083;
pub static SO_NWRITE: SockOpt = 0x1024;
pub static SO_OOBINLINE: SockOpt = 0x0100;
pub static SO_PEERLABEL: SockOpt = 0x1011;
pub static SO_RCVBUF: SockOpt = 0x1002;
pub static SO_RCVLOWAT: SockOpt = 0x1004;
pub static SO_SNDLOWAT: SockOpt = 0x1003;
pub static SO_RCVTIMEO: SockOpt = 0x1006;
pub static SO_SNDTIMEO: SockOpt = 0x1005;
pub static SO_RANDOMPORT: SockOpt = 0x1082;
pub static SO_RESTRICTIONS: SockOpt = 0x1081;
pub static SO_RESTRICT_DENYIN: SockOpt = 0x00000001;
pub static SO_RESTRICT_DENYOUT: SockOpt = 0x00000002;
pub static SO_REUSEADDR: SockOpt = 0x0004;
pub static SO_REUSESHAREUID: SockOpt = 0x1025;
pub static SO_SNDBUF: SockOpt = 0x1001;
pub static SO_TIMESTAMP: SockOpt = 0x0400;
pub static SO_TIMESTAMP_MONOTONIC: SockOpt = 0x0800;
pub static SO_TYPE: SockOpt = 0x1008;
pub static SO_WANTMORE: SockOpt = 0x4000;
pub static SO_WANTOOBFLAG: SockOpt = 0x8000;
#[allow(type_overflow)]
pub static SO_RESTRICT_DENYSET: SockOpt = 0x80000000;
}
pub fn socket(domain: AddressFamily, mut ty: SockType, flags: SockFlag) -> SysResult<Fd> {
let feat_atomic = features::socket_atomic_cloexec();
if feat_atomic {
ty = ty | flags.bits();
}
// TODO: Check the kernel version
let res = unsafe { ffi::socket(domain, ty, 0) };
if res < 0 {
return Err(SysError::last());
}
if !feat_atomic {
if flags.contains(SOCK_CLOEXEC) {
try!(fcntl(res, F_SETFD(FD_CLOEXEC)));
}
if flags.contains(SOCK_NONBLOCK) {
try!(fcntl(res, F_SETFL(O_NONBLOCK)));
}
}
Ok(res)
}
pub fn listen(sockfd: Fd, backlog: uint) -> SysResult<()> {
let res = unsafe { ffi::listen(sockfd, backlog as c_int) };
from_ffi(res)
}
pub fn bind(sockfd: Fd, addr: &SockAddr) -> SysResult<()> {
let res = unsafe {
match *addr {
SockIpV4(ref addr) => ffi::bind(sockfd, mem::transmute(addr), mem::size_of::<sockaddr_in>() as socklen_t),
SockIpV6(ref addr) => ffi::bind(sockfd, mem::transmute(addr), mem::size_of::<sockaddr_in6>() as socklen_t),
SockUnix(ref addr) => ffi::bind(sockfd, mem::transmute(addr), mem::size_of::<sockaddr_un>() as socklen_t)
}
};
from_ffi(res)
}
pub fn accept(sockfd: Fd) -> SysResult<Fd> {
let res = unsafe { ffi::accept(sockfd, ptr::null_mut(), ptr::null_mut()) };
if res < 0 {
return Err(SysError::last());
}
Ok(res)
}
#[cfg(not(any(target_os = "macos", target_os = "ios")))]
pub fn accept4(sockfd: Fd, flags: SockFlag) -> SysResult<Fd> {
use libc::sockaddr;
type F = unsafe extern "C" fn(c_int, *mut sockaddr, *mut socklen_t, c_int) -> c_int;
extern {
#[linkage = "extern_weak"]
static accept4: *const ();
}
if !accept4.is_null() {
let res = unsafe {
mem::transmute::<*const (), F>(accept4)(
sockfd, ptr::null_mut(), ptr::null_mut(), flags.bits)
};
if res < 0 {
return Err(SysError::last());
}
Ok(res)
} else {
accept4_polyfill(sockfd, flags)
}
}
#[cfg(any(target_os = "macos", target_os = "ios"))]
fn accept4(sockfd: Fd, flags: SockFlag) -> SysResult<Fd> {
accept4_polyfill(sockfd, flags)
}
#[inline]
fn accept4_polyfill(sockfd: Fd, flags: SockFlag) -> SysResult<Fd> {
let res = unsafe { ffi::accept(sockfd, ptr::null_mut(), ptr::null_mut()) };
if res < 0 {
return Err(SysError::last());
}
if flags.contains(SOCK_CLOEXEC) {
try!(fcntl(res, F_SETFD(FD_CLOEXEC)));
}
if flags.contains(SOCK_NONBLOCK) {
try!(fcntl(res, F_SETFL(O_NONBLOCK)));
}
Ok(res)
}
pub fn connect(sockfd: Fd, addr: &SockAddr) -> SysResult<()> {
let res = unsafe {
match *addr {
SockIpV4(ref addr) => ffi::connect(sockfd, mem::transmute(addr), mem::size_of::<sockaddr_in>() as socklen_t),
SockIpV6(ref addr) => ffi::connect(sockfd, mem::transmute(addr), mem::size_of::<sockaddr_in6>() as socklen_t),
SockUnix(ref addr) => ffi::connect(sockfd, mem::transmute(addr), mem::size_of::<sockaddr_un>() as socklen_t)
}
};
from_ffi(res)
}
#[repr(C)]
pub struct linger {
pub l_onoff: c_int,
pub l_linger: c_int
}
pub fn getsockopt<T>(fd: Fd, level: SockLevel, opt: SockOpt, val: &mut T) -> SysResult<uint> {
let mut len = mem::size_of::<T>() as socklen_t;
let res = unsafe {
ffi::getsockopt(
fd, level, opt,
mem::transmute(val),
&mut len as *mut socklen_t)
};
if res < 0 {
return Err(SysError::last());
}
Ok(len as uint)
}
pub fn setsockopt<T>(fd: Fd, level: SockLevel, opt: SockOpt, val: &T) -> SysResult<()> {
let len = mem::size_of::<T>() as socklen_t;
let res = unsafe {
ffi::setsockopt(
fd, level, opt,
mem::transmute(val),
len)
};
from_ffi(res)
}
|
