mirror of https://github.com/getdnsapi/getdns.git
73 lines
2.7 KiB
C
73 lines
2.7 KiB
C
/**
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*
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* /brief function for stub resolving
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*
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*/
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/*
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* Copyright (c) 2013, NLnet Labs, Verisign, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the names of the copyright holders nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Verisign, Inc. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "getdns/getdns.h"
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#include "config.h"
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#include "gldns/gbuffer.h"
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#include "gldns/rrdef.h"
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#include "gldns/str2wire.h"
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#include <ldns/util.h>
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gldns_buffer *
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make_query_pkt(const char *name, uint16_t request_type, struct getdns_dict *extensions)
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{
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uint16_t flags = 0; /* QUERY, NOERROR */
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uint32_t klass;
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size_t pos;
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gldns_buffer *pkt = gldns_buffer_new(512); /* max query */
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if (! pkt)
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return NULL;
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gldns_buffer_clear(pkt);
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gldns_buffer_write_u16(pkt, ldns_get_random());
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gldns_buffer_write_u16(pkt, flags);
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gldns_buffer_write_u16(pkt, 1); /* query count */
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gldns_buffer_write(pkt, "\000\000\000\000\000\000", 6); /* counts */
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pos = gldns_buffer_remaining(pkt);
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if (gldns_str2wire_dname_buf(name, gldns_buffer_current(pkt), &pos)) {
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gldns_buffer_free(pkt);
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return NULL;
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}
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gldns_buffer_skip(pkt, gldns_buffer_remaining(pkt) - pos);
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gldns_buffer_write_u16(pkt, request_type);
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if (getdns_dict_get_int(extensions, "specify_class", &klass)
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!= GETDNS_RETURN_GOOD)
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klass = GLDNS_RR_CLASS_IN;
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gldns_buffer_write_u16(pkt, (uint16_t) klass);
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return pkt;
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}
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/* stub.c */
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