87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/*
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* Copyright (C) 2000, 2001 Internet Software Consortium.
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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 INTERNET SOFTWARE CONSORTIUM
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* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: opt.h,v 1.7 2001/01/09 21:53:09 bwelling Exp $ */
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/* DNS_OPT_NEWCODES_KEEP */
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#ifndef DNS_OPT_H
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#define DNS_OPT_H 1
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#include <isc/lang.h>
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#include <isc/result.h>
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#include <isc/mem.h>
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#include <isc/region.h>
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#include <isc/types.h>
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#include <dns/rdataset.h>
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#include <dns/message.h>
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/*
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* XXX WARNING XXX These codes have not yet been assigned by IANA.
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* These are here as placekeepers ONLY.
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* Hide these definitions and anything that uses them behind a #define
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* which happens only in internal debugging code.
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* This #ifdef will go away once these are defined by IANA.
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*/
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#ifdef DNS_OPT_NEWCODES
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#define DNS_OPTCODE_ZONE 0xfff0
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#define DNS_OPTCODE_VIEW 0xfff1
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#endif /* DNS_OPT_NEWCODES */
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#define DNS_OPT_FLAGS(opt) ((opt)->ttl & 0xFFFF)
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/*
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* OPT records contain a series of attributes which contain different types.
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* These structures are used for holding the individual attribute
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* records.
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*/
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typedef struct dns_optattr {
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isc_uint16_t code;
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isc_region_t value;
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} dns_optattr_t;
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typedef struct dns_optlist {
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unsigned int size;
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unsigned int used;
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unsigned int next;
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dns_optattr_t *attrs;
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} dns_optlist_t;
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isc_result_t
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dns_opt_decode(dns_optlist_t *optlist, dns_rdataset_t *optset,
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isc_uint16_t code);
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isc_result_t
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dns_opt_decodeall(dns_optlist_t *optlist, dns_rdataset_t *optset);
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isc_result_t
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dns_opt_add(dns_rdata_t *rdata, dns_optlist_t *optlist,
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isc_buffer_t *target);
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isc_result_t
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dns_opt_attrtotext(dns_optattr_t *attr, isc_buffer_t *target,
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dns_messagetextflag_t flags);
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isc_result_t
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dns_opt_totext(dns_rdataset_t *opt, isc_buffer_t *target,
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dns_messagetextflag_t flags);
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ISC_LANG_ENDDECLS
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#endif /* DNS_OPT_H */
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