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/* $OpenBSD: getrrsetbyname.c,v 1.6 2015/09/14 07:38:37 guenther 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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#include <stdlib.h> |
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int |
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getrrsetbyname(const char *name, unsigned int class, unsigned int type, |
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unsigned int flags, struct rrsetinfo **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 r, saved_errno = errno; |
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res_init(); |
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as = getrrsetbyname_async(name, class, type, flags, NULL); |
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if (as == NULL) { |
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r = (errno == ENOMEM) ? ERRSET_NOMEMORY : ERRSET_FAIL; |
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errno = saved_errno; |
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return (r); |
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} |
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asr_run_sync(as, &ar); |
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*res = ar.ar_rrsetinfo; |
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return (ar.ar_rrset_errno); |
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} |
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/* from net/getrrsetbyname.c */ |
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void |
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freerrset(struct rrsetinfo *rrset) |
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{ |
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u_int16_t i; |
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if (rrset == NULL) |
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return; |
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if (rrset->rri_rdatas) { |
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for (i = 0; i < rrset->rri_nrdatas; i++) { |
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if (rrset->rri_rdatas[i].rdi_data == NULL) |
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break; |
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free(rrset->rri_rdatas[i].rdi_data); |
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} |
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free(rrset->rri_rdatas); |
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} |
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if (rrset->rri_sigs) { |
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for (i = 0; i < rrset->rri_nsigs; i++) { |
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if (rrset->rri_sigs[i].rdi_data == NULL) |
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break; |
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free(rrset->rri_sigs[i].rdi_data); |
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} |
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free(rrset->rri_sigs); |
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} |
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if (rrset->rri_name) |
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free(rrset->rri_name); |
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free(rrset); |
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} |
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DEF_WEAK(freerrset); |