contrib/bind-9.2.4rc7/lib/dns/rdata/hs_4/a_1.c

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: a_1.c,v 1.25.2.1 2004/03/09 06:11:35 marka Exp $ */
  19
  20 /* reviewed: Thu Mar 16 15:58:36 PST 2000 by brister */
  21
  22 #ifndef RDATA_HS_4_A_1_C
  23 #define RDATA_HS_4_A_1_C
  24
  25 #include <isc/net.h>
  26
  27 #define RRTYPE_A_ATTRIBUTES (0)
  28
  29 static inline isc_result_t
  30 fromtext_hs_a(ARGS_FROMTEXT) {
  31         isc_token_t token;
  32         struct in_addr addr;
  33         isc_region_t region;
  34
  35         REQUIRE(type == 1);
  36         REQUIRE(rdclass == 4);
  37
  38         UNUSED(type);
  39         UNUSED(origin);
  40         UNUSED(downcase);
  41         UNUSED(rdclass);
  42
  43         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  44                                       ISC_FALSE));
  45
  46         if (getquad(token.value.as_pointer, &addr, lexer, callbacks) != 1)
  47                 RETTOK(DNS_R_BADDOTTEDQUAD);
  48         isc_buffer_availableregion(target, &region);
  49         if (region.length < 4)
  50                 return (ISC_R_NOSPACE);
  51         memcpy(region.base, &addr, 4);
  52         isc_buffer_add(target, 4);
  53         return (ISC_R_SUCCESS);
  54 }
  55
  56 static inline isc_result_t
  57 totext_hs_a(ARGS_TOTEXT) {
  58         isc_region_t region;
  59
  60         REQUIRE(rdata->type == 1);
  61         REQUIRE(rdata->rdclass == 4);
  62         REQUIRE(rdata->length == 4);
  63
  64         UNUSED(tctx);
  65
  66         dns_rdata_toregion(rdata, &region);
  67         return (inet_totext(AF_INET, &region, target));
  68 }
  69
  70 static inline isc_result_t
  71 fromwire_hs_a(ARGS_FROMWIRE) {
  72         isc_region_t sregion;
  73         isc_region_t tregion;
  74
  75         REQUIRE(type == 1);
  76         REQUIRE(rdclass == 4);
  77
  78         UNUSED(type);
  79         UNUSED(dctx);
  80         UNUSED(downcase);
  81         UNUSED(rdclass);
  82
  83         isc_buffer_activeregion(source, &sregion);
  84         isc_buffer_availableregion(target, &tregion);
  85         if (sregion.length < 4)
  86                 return (ISC_R_UNEXPECTEDEND);
  87         if (tregion.length < 4)
  88                 return (ISC_R_NOSPACE);
  89
  90         memcpy(tregion.base, sregion.base, 4);
  91         isc_buffer_forward(source, 4);
  92         isc_buffer_add(target, 4);
  93         return (ISC_R_SUCCESS);
  94 }
  95
  96 static inline isc_result_t
  97 towire_hs_a(ARGS_TOWIRE) {
  98         isc_region_t region;
  99
 100         REQUIRE(rdata->type == 1);
 101         REQUIRE(rdata->rdclass == 4);
 102         REQUIRE(rdata->length == 4);
 103
 104         UNUSED(cctx);
 105
 106         isc_buffer_availableregion(target, &region);
 107         if (region.length < rdata->length)
 108                 return (ISC_R_NOSPACE);
 109         memcpy(region.base, rdata->data, rdata->length);
 110         isc_buffer_add(target, 4);
 111         return (ISC_R_SUCCESS);
 112 }
 113
 114 static inline int
 115 compare_hs_a(ARGS_COMPARE) {
 116         int order;
 117
 118         REQUIRE(rdata1->type == rdata2->type);
 119         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 120         REQUIRE(rdata1->type == 1);
 121         REQUIRE(rdata1->rdclass == 4);
 122         REQUIRE(rdata1->length == 4);
 123         REQUIRE(rdata2->length == 4);
 124
 125         order = memcmp(rdata1->data, rdata2->data, 4);
 126         if (order != 0)
 127                 order = (order < 0) ? -1 : 1;
 128
 129         return (order);
 130 }
 131
 132 static inline isc_result_t
 133 fromstruct_hs_a(ARGS_FROMSTRUCT) {
 134         dns_rdata_hs_a_t *a = source;
 135         isc_uint32_t n;
 136
 137         REQUIRE(type == 1);
 138         REQUIRE(rdclass == 4);
 139         REQUIRE(source != NULL);
 140         REQUIRE(a->common.rdtype == type);
 141         REQUIRE(a->common.rdclass == rdclass);
 142
 143         UNUSED(type);
 144         UNUSED(rdclass);
 145
 146         n = ntohl(a->in_addr.s_addr);
 147
 148         return (uint32_tobuffer(n, target));
 149 }
 150
 151 static inline isc_result_t
 152 tostruct_hs_a(ARGS_TOSTRUCT) {
 153         dns_rdata_hs_a_t *a = target;
 154         isc_uint32_t n;
 155         isc_region_t region;
 156
 157         REQUIRE(rdata->type == 1);
 158         REQUIRE(rdata->rdclass == 4);
 159         REQUIRE(rdata->length == 4);
 160
 161         UNUSED(mctx);
 162
 163         a->common.rdclass = rdata->rdclass;
 164         a->common.rdtype = rdata->type;
 165         ISC_LINK_INIT(&a->common, link);
 166
 167         dns_rdata_toregion(rdata, &region);
 168         n = uint32_fromregion(&region);
 169         a->in_addr.s_addr = htonl(n);
 170
 171         return (ISC_R_SUCCESS);
 172 }
 173
 174 static inline void
 175 freestruct_hs_a(ARGS_FREESTRUCT) {
 176         UNUSED(source);
 177
 178         REQUIRE(source != NULL);
 179 }
 180
 181 static inline isc_result_t
 182 additionaldata_hs_a(ARGS_ADDLDATA) {
 183         REQUIRE(rdata->type == 1);
 184         REQUIRE(rdata->rdclass == 4);
 185
 186         UNUSED(rdata);
 187         UNUSED(add);
 188         UNUSED(arg);
 189
 190         return (ISC_R_SUCCESS);
 191 }
 192
 193 static inline isc_result_t
 194 digest_hs_a(ARGS_DIGEST) {
 195         isc_region_t r;
 196
 197         REQUIRE(rdata->type == 1);
 198         REQUIRE(rdata->rdclass == 4);
 199
 200         dns_rdata_toregion(rdata, &r);
 201
 202         return ((digest)(arg, &r));
 203 }
 204
 205 #endif  /* RDATA_HS_4_A_1_C */