1 /* 2 * answer.h -- manipulating query answers and encoding them. 3 * 4 * Copyright (c) 2001-2006, NLnet Labs. All rights reserved. 5 * 6 * See LICENSE for the license. 7 * 8 */ 9 10 #ifndef _ANSWER_H_ 11 #define _ANSWER_H_ 12 13 #include <sys/types.h> 14 15 #include "dns.h" 16 #include "namedb.h" 17 #include "packet.h" 18 #include "query.h" 19 20 /* 21 * Structure used to keep track of RRsets that need to be stored in 22 * the answer packet. 23 */ 24 typedef struct answer answer_type; 25 struct answer { 26 size_t rrset_count; 27 rrset_type *rrsets[MAXRRSPP]; 28 domain_type *domains[MAXRRSPP]; 29 rr_section_type section[MAXRRSPP]; 30 }; 31 32 33 void encode_answer(query_type *q, const answer_type *answer); 34 35 36 void answer_init(answer_type *answer); 37 38 /* 39 * Add the specified RRset to the answer in the specified section. If 40 * the RRset is already present and in the same (or "higher") section 41 * return 0, otherwise return 1. 42 */ 43 int answer_add_rrset(answer_type *answer, rr_section_type section, 44 domain_type *domain, rrset_type *rrset); 45 46 47 #endif /* _ANSWER_H_ */ 48