1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
#![allow(non_upper_case_globals)]
#![allow(non_camel_case_types)]
#![allow(non_snake_case)]
include!(concat!(env!("OUT_DIR"), "/libzt.rs"));
use std::ffi::c_void;
use std::io::{Error, ErrorKind};
use std::net::{Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6, ToSocketAddrs};
use std::os::raw::c_int;
use std::{io, mem};
use crate::socket::Socket;
pub trait IsMinusOne {
fn is_minus_one(&self) -> bool;
}
macro_rules! impl_is_minus_one {
($($t:ident)*) => ($(impl IsMinusOne for $t {
fn is_minus_one(&self) -> bool {
*self == -1
}
})*)
}
impl_is_minus_one! { i8 i16 i32 i64 isize }
pub fn cvt<T: IsMinusOne>(t: T) -> std::io::Result<T> {
if t.is_minus_one() {
Err(std::io::Error::last_os_error())
} else {
Ok(t)
}
}
pub fn cvt_r<T, F>(mut f: F) -> std::io::Result<T>
where
T: IsMinusOne,
F: FnMut() -> T,
{
loop {
match cvt(f()) {
Err(ref e) if e.kind() == ErrorKind::Interrupted => {}
other => return other,
}
}
}
pub fn setsockopt<T>(sock: &Socket, opt: c_int, val: c_int, payload: T) -> io::Result<()> {
unsafe {
let payload = &payload as *const T as *const c_void;
cvt(zts_bsd_setsockopt(
*sock.as_inner(),
opt,
val,
payload,
mem::size_of::<T>() as zts_socklen_t,
))?;
Ok(())
}
}
pub fn getsockopt<T: Copy>(sock: &Socket, opt: c_int, val: c_int) -> io::Result<T> {
unsafe {
let mut slot: T = mem::zeroed();
let mut len = mem::size_of::<T>() as zts_socklen_t;
cvt(zts_bsd_getsockopt(
*sock.as_inner(),
opt,
val,
&mut slot as *mut _ as *mut _,
&mut len,
))?;
Ok(slot)
}
}
pub trait AsInner<Inner: ?Sized> {
fn as_inner(&self) -> &Inner;
}
pub trait AsInnerMut<Inner: ?Sized> {
fn as_inner_mut(&mut self) -> &mut Inner;
}
pub trait IntoInner<Inner> {
fn into_inner(self) -> Inner;
}
pub trait FromInner<Inner> {
fn from_inner(inner: Inner) -> Self;
}
pub fn each_addr<A: ToSocketAddrs, F, T>(addr: A, mut f: F) -> io::Result<T>
where
F: FnMut(io::Result<&SocketAddr>) -> io::Result<T>,
{
let addrs = match addr.to_socket_addrs() {
Ok(addrs) => addrs,
Err(e) => return f(Err(e)),
};
let mut last_err = None;
for addr in addrs {
match f(Ok(&addr)) {
Ok(l) => return Ok(l),
Err(e) => last_err = Some(e),
}
}
Err(last_err.unwrap_or_else(|| {
Error::new(
ErrorKind::InvalidInput,
"Could not resolve to any addresses",
)
}))
}
pub const fn ntohs(i: u16) -> u16 {
u16::from_be(i)
}
pub const fn htons(i: u16) -> u16 {
i.to_be()
}
pub fn ipv4_addr(addr: zts_in_addr) -> u32 {
(addr.s_addr as u32).to_be()
}
pub fn sockaddr_to_addr(storage: &zts_sockaddr_storage, len: usize) -> io::Result<SocketAddr> {
match storage.ss_family as c_int {
0x2 => {
assert!(len as usize >= mem::size_of::<zts_sockaddr_in>());
let storage: &zts_sockaddr_in = unsafe { mem::transmute(storage) };
let ip = 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))
}
0xA => {
assert!(len as usize >= mem::size_of::<zts_sockaddr_in6>());
let storage: &zts_sockaddr_in6 = unsafe { mem::transmute(storage) };
let arr: [u16; 8] = unsafe { mem::transmute(storage.sin6_addr.un.u8_addr) };
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.sin6_scope_id,
)))
}
_ => Err(io::Error::new(
io::ErrorKind::InvalidData,
"expected IPv4 or IPv6 socket",
)),
}
}
pub fn sockname<F>(f: F) -> io::Result<SocketAddr>
where
F: FnOnce(*mut zts_sockaddr, *mut zts_socklen_t) -> c_int,
{
unsafe {
let mut storage: zts_sockaddr_storage = mem::zeroed();
let mut len = mem::size_of_val(&storage) as zts_socklen_t;
f(&mut storage as *mut _ as *mut _, &mut len);
sockaddr_to_addr(&storage, len as usize)
}
}