3 * - RR-type-specific code, and the machinery to call it
6 * This file is part of adns, which is Copyright (C) 1997, 1998 Ian Jackson
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 static adns_status rp_inaddr(adns_query qu, int serv,
26 const byte *dgram, int dglen, int cbyte, int max,
28 struct in_addr *dr= store_r;
30 if (max-cbyte != 4) return adns_s_invaliddata;
31 memcpy(dr,dgram+cbyte,4);
35 static void rmf_null(adns_query qu, void *data) { }
37 #define TYPE_SF(size,func,free) size, rp_##func, rmf_##free
38 #define TYPE_SN(size,func) size, rp_##func, rmf_null
39 #define TYPESZ_M(member) (sizeof(((adns_answer*)0)->rrs.member))
40 #define TYPE_MF(member,parse) TYPE_SF(TYPESZ_M(member),parse,member)
41 #define TYPE_MN(member,parse) TYPE_SN(TYPESZ_M(member),parse)
44 * ms is M specify member name
45 * or S specify size explicitly
46 * nf is F full memory management, dependent on member name or specified func
47 * N no memory management required
50 static const typeinfo typeinfos[] = {
51 /* Must be in ascending order of rrtype ! */
52 /* rr type code name style member size parser */
54 { adns_r_a, "A", TYPE_MN( inaddr, inaddr ) },
56 { adns_r_ns_raw, "NS(raw)", TYPE_MF( str, domain_raw ) },
57 { adns_r_cname, "CNAME", TYPE_MF( str, domain_raw ) },
58 { adns_r_soa_raw, "SOA(raw)", TYPE_MF( soa, soa ) },
59 { adns_r_null, "NULL", TYPE_SN( 0, null ) },
60 { adns_r_ptr_raw, "PTR(raw)", TYPE_MF( str, domain_raw ) },
61 { adns_r_hinfo, "HINFO", TYPE_MF( strpair, hinfo ) },
62 { adns_r_mx_raw, "MX(raw)", TYPE_MF( intstr, mx_raw ) },
63 { adns_r_txt, "TXT", TYPE_MF( str, txt ) },
64 { adns_r_rp_raw, "RP(raw)", TYPE_MF( strpair, rp ) },
66 { adns_r_ns, "NS(+addr)", TYPE_MF( dmaddr, dmaddr ) },
67 { adns_r_ptr, "PTR(checked)", TYPE_MF( str, ptr ) },
68 { adns_r_mx, "MX(+addr)", TYPE_MF( intdmaddr, mx ) },
70 { adns_r_soa, "SOA(822)", TYPE_MF( soa, soa ) },
71 { adns_r_rp, "RP(822)", TYPE_MF( strpair, rp ) },
75 const typeinfo *adns__findtype(adns_rrtype type) {
76 const typeinfo *begin, *end, *mid;
78 begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo));
81 mid= begin + ((end-begin)>>1);
82 if (mid->type == type) return mid;
83 if (type > mid->type) begin= mid+1;