| /* 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 <errno.h> |
| #include <stddef.h> /* NULL */ |
| #include <stdlib.h> |
| #include <string.h> |
| |
| |
| static void uv__getaddrinfo_work(struct uv__work* w) { |
| uv_getaddrinfo_t* req = container_of(w, uv_getaddrinfo_t, work_req); |
| |
| req->retcode = getaddrinfo(req->hostname, |
| req->service, |
| req->hints, |
| &req->res); |
| } |
| |
| |
| static void uv__getaddrinfo_done(struct uv__work* w, int status) { |
| uv_getaddrinfo_t* req = container_of(w, uv_getaddrinfo_t, work_req); |
| struct addrinfo *res = req->res; |
| #if defined(__sun) |
| size_t hostlen; |
| |
| if (req->hostname) |
| hostlen = strlen(req->hostname); |
| else |
| hostlen = 0; |
| #endif |
| |
| req->res = NULL; |
| |
| uv__req_unregister(req->loop, req); |
| |
| /* see initialization in uv_getaddrinfo() */ |
| if (req->hints) |
| free(req->hints); |
| else if (req->service) |
| free(req->service); |
| else if (req->hostname) |
| free(req->hostname); |
| else |
| assert(0); |
| |
| req->hints = NULL; |
| req->service = NULL; |
| req->hostname = NULL; |
| |
| if (req->retcode == 0) { |
| /* OK */ |
| #if defined(EAI_NODATA) /* FreeBSD deprecated EAI_NODATA */ |
| } else if (req->retcode == EAI_NONAME || req->retcode == EAI_NODATA) { |
| #else |
| } else if (req->retcode == EAI_NONAME) { |
| #endif |
| uv__set_sys_error(req->loop, ENOENT); /* FIXME compatibility hack */ |
| #if defined(__sun) |
| } else if (req->retcode == EAI_MEMORY && hostlen >= MAXHOSTNAMELEN) { |
| uv__set_sys_error(req->loop, ENOENT); |
| #endif |
| } else { |
| req->loop->last_err.code = UV_EADDRINFO; |
| req->loop->last_err.sys_errno_ = req->retcode; |
| } |
| |
| if (status == -UV_ECANCELED) { |
| assert(req->retcode == 0); |
| req->retcode = UV_ECANCELED; |
| uv__set_artificial_error(req->loop, UV_ECANCELED); |
| } |
| |
| req->cb(req, req->retcode, res); |
| } |
| |
| |
| int uv_getaddrinfo(uv_loop_t* loop, |
| uv_getaddrinfo_t* req, |
| uv_getaddrinfo_cb cb, |
| const char* hostname, |
| const char* service, |
| const struct addrinfo* hints) { |
| size_t hostname_len; |
| size_t service_len; |
| size_t hints_len; |
| size_t len; |
| char* buf; |
| |
| if (req == NULL || cb == NULL || (hostname == NULL && service == NULL)) |
| return uv__set_artificial_error(loop, UV_EINVAL); |
| |
| hostname_len = hostname ? strlen(hostname) + 1 : 0; |
| service_len = service ? strlen(service) + 1 : 0; |
| hints_len = hints ? sizeof(*hints) : 0; |
| buf = malloc(hostname_len + service_len + hints_len); |
| |
| if (buf == NULL) |
| return uv__set_artificial_error(loop, UV_ENOMEM); |
| |
| uv__req_init(loop, req, UV_GETADDRINFO); |
| req->loop = loop; |
| req->cb = cb; |
| req->res = NULL; |
| req->hints = NULL; |
| req->service = NULL; |
| req->hostname = NULL; |
| req->retcode = 0; |
| |
| /* order matters, see uv_getaddrinfo_done() */ |
| len = 0; |
| |
| if (hints) { |
| req->hints = memcpy(buf + len, hints, sizeof(*hints)); |
| len += sizeof(*hints); |
| } |
| |
| if (service) { |
| req->service = memcpy(buf + len, service, service_len); |
| len += service_len; |
| } |
| |
| if (hostname) { |
| req->hostname = memcpy(buf + len, hostname, hostname_len); |
| len += hostname_len; |
| } |
| |
| uv__work_submit(loop, |
| &req->work_req, |
| uv__getaddrinfo_work, |
| uv__getaddrinfo_done); |
| |
| return 0; |
| } |
| |
| |
| void uv_freeaddrinfo(struct addrinfo* ai) { |
| if (ai) |
| freeaddrinfo(ai); |
| } |