1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 use ai = std::io::net::addrinfo;
16 use std::rt::task::BlockedTask;
19 use super::{Loop, UvError, Request, wait_until_woken_after, wakeup};
23 handle: *libc::addrinfo,
27 slot: Option<BlockedTask>,
29 addrinfo: Option<Addrinfo>,
32 pub struct GetAddrInfoRequest;
34 impl GetAddrInfoRequest {
35 pub fn run(loop_: &Loop, node: Option<&str>, service: Option<&str>,
36 hints: Option<ai::Hint>) -> Result<Vec<ai::Info>, UvError> {
37 assert!(node.is_some() || service.is_some());
38 let (_c_node, c_node_ptr) = match node {
40 let c_node = n.to_c_str();
41 let c_node_ptr = c_node.with_ref(|r| r);
42 (Some(c_node), c_node_ptr)
44 None => (None, null())
47 let (_c_service, c_service_ptr) = match service {
49 let c_service = s.to_c_str();
50 let c_service_ptr = c_service.with_ref(|r| r);
51 (Some(c_service), c_service_ptr)
53 None => (None, null())
56 let hint = hints.map(|hint| {
58 each_ai_flag(|cval, aival| {
59 if hint.flags & (aival as uint) != 0 {
68 ai_family: hint.family as c_int,
69 ai_socktype: socktype,
70 ai_protocol: protocol,
77 let hint_ptr = hint.as_ref().map_or(null(), |x| x as *libc::addrinfo);
78 let mut req = Request::new(uvll::UV_GETADDRINFO);
81 uvll::uv_getaddrinfo(loop_.handle, req.handle,
82 getaddrinfo_cb, c_node_ptr, c_service_ptr,
86 req.defuse(); // uv callback now owns this request
87 let mut cx = Ctx { slot: None, status: 0, addrinfo: None };
89 wait_until_woken_after(&mut cx.slot, loop_, || {
94 0 => Ok(accum_addrinfo(cx.addrinfo.get_ref())),
102 extern fn getaddrinfo_cb(req: *uvll::uv_getaddrinfo_t,
104 res: *libc::addrinfo) {
105 let req = Request::wrap(req);
106 assert!(status != uvll::ECANCELED);
107 let cx: &mut Ctx = unsafe { req.get_data() };
109 cx.addrinfo = Some(Addrinfo { handle: res });
111 wakeup(&mut cx.slot);
116 impl Drop for Addrinfo {
118 unsafe { uvll::uv_freeaddrinfo(self.handle) }
122 fn each_ai_flag(_f: |c_int, ai::Flag|) {
123 /* FIXME: do we really want to support these?
125 f(uvll::rust_AI_ADDRCONFIG(), ai::AddrConfig);
126 f(uvll::rust_AI_ALL(), ai::All);
127 f(uvll::rust_AI_CANONNAME(), ai::CanonName);
128 f(uvll::rust_AI_NUMERICHOST(), ai::NumericHost);
129 f(uvll::rust_AI_NUMERICSERV(), ai::NumericServ);
130 f(uvll::rust_AI_PASSIVE(), ai::Passive);
131 f(uvll::rust_AI_V4MAPPED(), ai::V4Mapped);
136 // Traverse the addrinfo linked list, producing a vector of Rust socket addresses
137 pub fn accum_addrinfo(addr: &Addrinfo) -> Vec<ai::Info> {
139 let mut addr = addr.handle;
141 let mut addrs = Vec::new();
143 let rustaddr = net::sockaddr_to_addr(cast::transmute((*addr).ai_addr),
144 (*addr).ai_addrlen as uint);
147 each_ai_flag(|cval, aival| {
148 if (*addr).ai_flags & cval != 0 {
149 flags |= aival as uint;
153 /* FIXME: do we really want to support these
154 let protocol = match (*addr).ai_protocol {
155 p if p == uvll::rust_IPPROTO_UDP() => Some(ai::UDP),
156 p if p == uvll::rust_IPPROTO_TCP() => Some(ai::TCP),
159 let socktype = match (*addr).ai_socktype {
160 p if p == uvll::rust_SOCK_STREAM() => Some(ai::Stream),
161 p if p == uvll::rust_SOCK_DGRAM() => Some(ai::Datagram),
162 p if p == uvll::rust_SOCK_RAW() => Some(ai::Raw),
169 addrs.push(ai::Info {
171 family: (*addr).ai_family as uint,
176 if (*addr).ai_next.is_not_null() {
177 addr = (*addr).ai_next;