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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "uv.h"
#include "internal.h"
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
static void uv__getnameinfo_work(struct uv__work* w) {
uv_getnameinfo_t* req;
int err;
socklen_t salen;
req = container_of(w, uv_getnameinfo_t, work_req);
if (req->storage.ss_family == AF_INET)
salen = sizeof(struct sockaddr_in);
else if (req->storage.ss_family == AF_INET6)
salen = sizeof(struct sockaddr_in6);
else
abort();
err = getnameinfo((struct sockaddr*) &req->storage,
salen,
req->host,
sizeof(req->host),
req->service,
sizeof(req->service),
req->flags);
req->retcode = uv__getaddrinfo_translate_error(err);
}
static void uv__getnameinfo_done(struct uv__work* w, int status) {
uv_getnameinfo_t* req;
char* host;
char* service;
req = container_of(w, uv_getnameinfo_t, work_req);
uv__req_unregister(req->loop, req);
host = service = NULL;
if (status == -ECANCELED) {
assert(req->retcode == 0);
req->retcode = UV_EAI_CANCELED;
} else if (req->retcode == 0) {
host = req->host;
service = req->service;
}
if (req->getnameinfo_cb)
req->getnameinfo_cb(req, req->retcode, host, service);
}
/*
* Entry point for getnameinfo
* return 0 if a callback will be made
* return error code if validation fails
*/
int uv_getnameinfo(uv_loop_t* loop,
uv_getnameinfo_t* req,
uv_getnameinfo_cb getnameinfo_cb,
const struct sockaddr* addr,
int flags) {
if (req == NULL || addr == NULL)
return UV_EINVAL;
if (addr->sa_family == AF_INET) {
memcpy(&req->storage,
addr,
sizeof(struct sockaddr_in));
} else if (addr->sa_family == AF_INET6) {
memcpy(&req->storage,
addr,
sizeof(struct sockaddr_in6));
} else {
return UV_EINVAL;
}
uv__req_init(loop, (uv_req_t*)req, UV_GETNAMEINFO);
req->getnameinfo_cb = getnameinfo_cb;
req->flags = flags;
req->type = UV_GETNAMEINFO;
req->loop = loop;
req->retcode = 0;
if (getnameinfo_cb) {
uv__work_submit(loop,
&req->work_req,
uv__getnameinfo_work,
uv__getnameinfo_done);
return 0;
} else {
uv__getnameinfo_work(&req->work_req);
uv__getnameinfo_done(&req->work_req, 0);
return req->retcode;
}
}
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