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
|
use {NixResult, NixError};
use super::{sa_family_t, in_addr, sockaddr_in, sockaddr_in6, sockaddr_un, AF_UNIX, AF_INET};
use errno::Errno;
use libc;
use std::{mem, net, path, ptr};
use std::ffi::{AsOsStr, CStr, OsStr};
use std::os::unix::OsStrExt;
/*
*
* ===== Sock addr =====
*
*/
/// Represents a socket address
#[derive(Copy)]
pub enum SockAddr {
// TODO: Rename these variants IpV4, IpV6, Unix
IpV4(sockaddr_in),
IpV6(sockaddr_in6),
Unix(sockaddr_un)
}
/// A trait for values which can be converted or resolved to a SockAddr.
pub trait ToSockAddr {
/// Converts the value to a SockAddr
fn to_sock_addr(&self) -> NixResult<SockAddr>;
/// Converts and yields the value as a SockAddr
fn with_sock_addr<T, F: FnOnce(&SockAddr) -> T>(&self, action: F) -> NixResult<T> {
Ok(action(&try!(self.to_sock_addr())))
}
}
impl ToSockAddr for SockAddr {
fn to_sock_addr(&self) -> NixResult<SockAddr> {
Ok(*self)
}
fn with_sock_addr<T, F: FnOnce(&SockAddr) -> T>(&self, action: F) -> NixResult<T> {
Ok(action(self))
}
}
/// Convert a path into a unix domain socket address
impl ToSockAddr for path::Path {
fn to_sock_addr(&self) -> NixResult<SockAddr> {
let bytes = self.as_os_str().as_bytes();
Ok(SockAddr::Unix(unsafe {
let mut ret = sockaddr_un {
sun_family: AF_UNIX as sa_family_t,
.. mem::zeroed()
};
// Make sure the destination has enough capacity
if bytes.len() >= ret.sun_path.len() {
return Err(NixError::Sys(Errno::ENAMETOOLONG));
}
// Copy the path
ptr::copy_memory(
ret.sun_path.as_mut_ptr(),
bytes.as_ptr() as *const i8,
bytes.len());
ret
}))
}
}
/// Convert an inet address into a socket address
impl ToSockAddr for net::SocketAddr {
fn to_sock_addr(&self) -> NixResult<SockAddr> {
use std::net::IpAddr;
match self.ip() {
IpAddr::V4(ip) => {
let addr = ip.to_in_addr()
.expect("in_addr conversion expected to be successful");
Ok(SockAddr::IpV4(sockaddr_in {
sin_family: AF_INET as sa_family_t,
sin_port: self.port(),
sin_addr: addr,
.. unsafe { mem::zeroed() }
}))
}
_ => unimplemented!()
}
}
}
/// Convert from a socket address
pub trait FromSockAddr {
fn from_sock_addr(addr: &SockAddr) -> Option<Self>;
}
impl FromSockAddr for net::SocketAddr {
fn from_sock_addr(addr: &SockAddr) -> Option<net::SocketAddr> {
use std::net::{IpAddr, Ipv4Addr};
use std::num::Int;
match *addr {
SockAddr::IpV4(ref addr) => {
let ip = Int::from_be(addr.sin_addr.s_addr);
let ip = Ipv4Addr::new(
((ip >> 24) as u8) & 0xff,
((ip >> 16) as u8) & 0xff,
((ip >> 8) as u8) & 0xff,
((ip >> 0) as u8) & 0xff);
Some(net::SocketAddr::new(IpAddr::V4(ip), addr.sin_port))
}
SockAddr::IpV6(_) => unimplemented!(),
_ => None,
}
}
}
impl FromSockAddr for path::PathBuf {
fn from_sock_addr(addr: &SockAddr) -> Option<path::PathBuf> {
if let SockAddr::Unix(ref addr) = *addr {
unsafe {
let bytes = CStr::from_ptr(addr.sun_path.as_ptr()).to_bytes();
let osstr = <OsStr as OsStrExt>::from_bytes(bytes);
return Some(path::PathBuf::new(osstr));
}
}
None
}
}
/*
*
* ===== InAddr =====
*
*/
pub trait ToInAddr {
fn to_in_addr(self) -> Option<libc::in_addr>;
}
impl ToInAddr for SockAddr {
fn to_in_addr(self) -> Option<libc::in_addr> {
match self {
SockAddr::IpV4(sock) => Some(sock.sin_addr),
_ => None,
}
}
}
impl<'a> ToInAddr for &'a SockAddr {
fn to_in_addr(self) -> Option<libc::in_addr> {
match *self {
SockAddr::IpV4(ref sock) => Some(sock.sin_addr),
_ => None,
}
}
}
impl ToInAddr for net::IpAddr {
fn to_in_addr(self) -> Option<libc::in_addr> {
match self {
net::IpAddr::V4(addr) => addr.to_in_addr(),
_ => None,
}
}
}
impl<'a> ToInAddr for &'a net::IpAddr {
fn to_in_addr(self) -> Option<libc::in_addr> {
match *self {
net::IpAddr::V4(addr) => addr.to_in_addr(),
_ => None,
}
}
}
impl ToInAddr for net::Ipv4Addr {
fn to_in_addr(self) -> Option<libc::in_addr> {
use std::num::Int;
let addr = self.octets();
Some(in_addr {
s_addr: Int::from_be(
((addr[0] as u32) << 24) |
((addr[1] as u32) << 16) |
((addr[2] as u32) << 8) |
((addr[3] as u32) << 0))
})
}
}
impl<'a> ToInAddr for &'a net::Ipv4Addr {
fn to_in_addr(self) -> Option<libc::in_addr> {
(*self).to_in_addr()
}
}
|
