mirror of
https://github.com/neovim/neovim.git
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136 lines
3.6 KiB
C
136 lines
3.6 KiB
C
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "uv.h"
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#include "internal.h"
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#include <errno.h>
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#include <stddef.h> /* NULL */
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#include <stdlib.h>
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#include <string.h>
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static void uv__getaddrinfo_work(struct uv__work* w) {
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uv_getaddrinfo_t* req;
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int err;
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req = container_of(w, uv_getaddrinfo_t, work_req);
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err = getaddrinfo(req->hostname, req->service, req->hints, &req->res);
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req->retcode = uv__getaddrinfo_translate_error(err);
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}
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static void uv__getaddrinfo_done(struct uv__work* w, int status) {
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uv_getaddrinfo_t* req;
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struct addrinfo *res;
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req = container_of(w, uv_getaddrinfo_t, work_req);
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uv__req_unregister(req->loop, req);
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res = req->res;
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req->res = NULL;
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/* See initialization in uv_getaddrinfo(). */
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if (req->hints)
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free(req->hints);
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else if (req->service)
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free(req->service);
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else if (req->hostname)
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free(req->hostname);
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else
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assert(0);
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req->hints = NULL;
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req->service = NULL;
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req->hostname = NULL;
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if (status == -ECANCELED) {
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assert(req->retcode == 0);
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req->retcode = UV_EAI_CANCELED;
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}
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req->cb(req, req->retcode, res);
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}
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int uv_getaddrinfo(uv_loop_t* loop,
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uv_getaddrinfo_t* req,
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uv_getaddrinfo_cb cb,
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const char* hostname,
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const char* service,
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const struct addrinfo* hints) {
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size_t hostname_len;
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size_t service_len;
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size_t hints_len;
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size_t len;
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char* buf;
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if (req == NULL || cb == NULL || (hostname == NULL && service == NULL))
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return -EINVAL;
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hostname_len = hostname ? strlen(hostname) + 1 : 0;
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service_len = service ? strlen(service) + 1 : 0;
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hints_len = hints ? sizeof(*hints) : 0;
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buf = malloc(hostname_len + service_len + hints_len);
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if (buf == NULL)
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return -ENOMEM;
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uv__req_init(loop, req, UV_GETADDRINFO);
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req->loop = loop;
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req->cb = cb;
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req->res = NULL;
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req->hints = NULL;
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req->service = NULL;
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req->hostname = NULL;
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req->retcode = 0;
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/* order matters, see uv_getaddrinfo_done() */
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len = 0;
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if (hints) {
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req->hints = memcpy(buf + len, hints, sizeof(*hints));
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len += sizeof(*hints);
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}
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if (service) {
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req->service = memcpy(buf + len, service, service_len);
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len += service_len;
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}
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if (hostname) {
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req->hostname = memcpy(buf + len, hostname, hostname_len);
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len += hostname_len;
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}
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uv__work_submit(loop,
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&req->work_req,
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uv__getaddrinfo_work,
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uv__getaddrinfo_done);
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return 0;
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}
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void uv_freeaddrinfo(struct addrinfo* ai) {
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if (ai)
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freeaddrinfo(ai);
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}
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