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ldns(3) 		    Library Functions Manual			 ldns(3)

NAME
     ldns_dnssec_data_chain,			  ldns_dnssec_data_chain_struct,
     ldns_dnssec_trust_tree - data structures for validation chains

SYNOPSIS
     #include <stdint.h>
     #include <stdbool.h>

     #include <ldns/ldns.h>

      ldns_dnssec_data_chain_struct();

DESCRIPTION
     ldns_dnssec_data_chain
	    Chain structure that contains all DNSSEC data needed to
	    verify an rrset
	    struct ldns_dnssec_data_chain_struct
	    {
		 ldns_rr_list *rrset;
		 ldns_rr_list *signatures;
		 ldns_rr_type parent_type;
		 ldns_dnssec_data_chain *parent;
		 ldns_pkt_rcode packet_rcode;
		 ldns_rr_type packet_qtype;
		 bool packet_nodata;
	    };

	    typedef struct ldns_dnssec_data_chain_struct ldns_dnssec_data_chain;

     ldns_dnssec_data_chain_struct()

     ldns_dnssec_trust_tree
	    Tree structure that contains the relation of DNSSEC data,
	    and their cryptographic status.

	    This tree is derived from a data_chain, and can be used
	    to look whether there is a connection between an RRSET
	    and a trusted key. The tree only contains pointers to the
	    data_chain, and therefore one should *never* free() the
	    data_chain when there is still a trust tree derived from
	    that chain.

	    Example tree:
		key   key    key
		  \    |    /
		   \   |   /
		    \  |  /
		       ds
		       |
		      key
		       |
		      key
		       |
		       rr

	    For each signature there is a parent; if the parent
	    pointer is null, it couldn't be found and there was no
	    denial; otherwise is a tree which contains either a
	    DNSKEY, a DS, or a NSEC rr
	    struct ldns_dnssec_trust_tree_struct
	    {
		 ldns_rr *rr;
		 /* the complete rrset this rr was in */
		 ldns_rr_list *rrset;
		 ldns_dnssec_trust_tree *parents[LDNS_DNSSEC_TRUST_TREE_MAX_PAR-
	    ENTS];
		 ldns_status parent_status[LDNS_DNSSEC_TRUST_TREE_MAX_PARENTS];
		 /** for debugging, add signatures too (you might want
		     those if they contain errors) */
		 ldns_rr *parent_signature[LDNS_DNSSEC_TRUST_TREE_MAX_PARENTS];
		 size_t parent_count;
	    };

	    typedef struct ldns_dnssec_trust_tree_struct ldns_dnssec_trust_tree;

AUTHOR
     The ldns team at NLnet Labs.

REPORTING BUGS
     Please   report   bugs   to   dns-team@nlnetlabs.nl   or	on   GitHub   at
     https://github.com/NLnetLabs/ldns/issues

COPYRIGHT
     Copyright (c) 2004 - 2006 NLnet Labs.

     Licensed  under  the  BSD	License. There is NO warranty; not even for MER-
     CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

SEE ALSO
     ldns_dnssec_data_chain_new,  ldns_dnssec_trust_tree_new,	ldns_dnssec_ver-
     ify_denial.   And perldoc Net::DNS, RFC1034, RFC1035, RFC4033, RFC4034  and
     RFC4035.

REMARKS
     This manpage was automatically generated from the ldns source code.

				   30 May 2006				 ldns(3)

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<https://man.freebsd.org/cgi/man.cgi?query=ldns_dnssec_data_chain_struct&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>

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