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/* $OpenBSD: getaddrinfo.c,v 1.9 2015/10/08 14:08:44 eric Exp $ */ |
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/* |
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* Copyright (c) 2012 Eric Faurot <eric@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
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#include <netdb.h> |
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#include <asr.h> |
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#include <errno.h> |
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#include <resolv.h> |
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int |
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getaddrinfo(const char *hostname, const char *servname, |
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const struct addrinfo *hints, struct addrinfo **res) |
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{ |
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struct asr_query *as; |
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struct asr_result ar; |
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int saved_errno = errno; |
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if (hints == NULL || (hints->ai_flags & AI_NUMERICHOST) == 0) |
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res_init(); |
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as = getaddrinfo_async(hostname, servname, hints, NULL); |
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if (as == NULL) { |
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if (errno == ENOMEM) { |
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errno = saved_errno; |
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return (EAI_MEMORY); |
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} |
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return (EAI_SYSTEM); |
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} |
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asr_run_sync(as, &ar); |
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*res = ar.ar_addrinfo; |
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if (ar.ar_gai_errno == EAI_SYSTEM) |
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errno = ar.ar_errno; |
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return (ar.ar_gai_errno); |
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} |
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DEF_WEAK(getaddrinfo); |