1 /* 2 * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 9 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 10 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 11 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 12 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 13 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 14 * PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 /* $Id: kx_36.c,v 1.3 2020/02/23 19:54:26 jung Exp $ */ 18 19 /* Reviewed: Thu Mar 16 17:24:54 PST 2000 by explorer */ 20 21 /* RFC2230 */ 22 23 #ifndef RDATA_IN_1_KX_36_C 24 #define RDATA_IN_1_KX_36_C 25 26 #define RRTYPE_KX_ATTRIBUTES (0) 27 28 static inline isc_result_t 29 totext_in_kx(ARGS_TOTEXT) { 30 isc_region_t region; 31 dns_name_t name; 32 dns_name_t prefix; 33 isc_boolean_t sub; 34 char buf[sizeof("64000")]; 35 unsigned short num; 36 37 REQUIRE(rdata->type == dns_rdatatype_kx); 38 REQUIRE(rdata->rdclass == dns_rdataclass_in); 39 REQUIRE(rdata->length != 0); 40 41 dns_name_init(&name, NULL); 42 dns_name_init(&prefix, NULL); 43 44 dns_rdata_toregion(rdata, ®ion); 45 num = uint16_fromregion(®ion); 46 isc_region_consume(®ion, 2); 47 snprintf(buf, sizeof(buf), "%u", num); 48 RETERR(str_totext(buf, target)); 49 50 RETERR(str_totext(" ", target)); 51 52 dns_name_fromregion(&name, ®ion); 53 sub = name_prefix(&name, tctx->origin, &prefix); 54 return (dns_name_totext(&prefix, sub, target)); 55 } 56 57 static inline isc_result_t 58 fromwire_in_kx(ARGS_FROMWIRE) { 59 dns_name_t name; 60 isc_region_t sregion; 61 62 REQUIRE(type == dns_rdatatype_kx); 63 REQUIRE(rdclass == dns_rdataclass_in); 64 65 UNUSED(type); 66 UNUSED(rdclass); 67 68 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); 69 70 dns_name_init(&name, NULL); 71 72 isc_buffer_activeregion(source, &sregion); 73 if (sregion.length < 2) 74 return (ISC_R_UNEXPECTEDEND); 75 RETERR(mem_tobuffer(target, sregion.base, 2)); 76 isc_buffer_forward(source, 2); 77 return (dns_name_fromwire(&name, source, dctx, options, target)); 78 } 79 80 static inline isc_result_t 81 towire_in_kx(ARGS_TOWIRE) { 82 dns_name_t name; 83 dns_offsets_t offsets; 84 isc_region_t region; 85 86 REQUIRE(rdata->type == dns_rdatatype_kx); 87 REQUIRE(rdata->rdclass == dns_rdataclass_in); 88 REQUIRE(rdata->length != 0); 89 90 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE); 91 dns_rdata_toregion(rdata, ®ion); 92 RETERR(mem_tobuffer(target, region.base, 2)); 93 isc_region_consume(®ion, 2); 94 95 dns_name_init(&name, offsets); 96 dns_name_fromregion(&name, ®ion); 97 98 return (dns_name_towire(&name, cctx, target)); 99 } 100 101 static inline int 102 compare_in_kx(ARGS_COMPARE) { 103 dns_name_t name1; 104 dns_name_t name2; 105 isc_region_t region1; 106 isc_region_t region2; 107 int order; 108 109 REQUIRE(rdata1->type == rdata2->type); 110 REQUIRE(rdata1->rdclass == rdata2->rdclass); 111 REQUIRE(rdata1->type == dns_rdatatype_kx); 112 REQUIRE(rdata1->rdclass == dns_rdataclass_in); 113 REQUIRE(rdata1->length != 0); 114 REQUIRE(rdata2->length != 0); 115 116 order = memcmp(rdata1->data, rdata2->data, 2); 117 if (order != 0) 118 return (order < 0 ? -1 : 1); 119 120 dns_name_init(&name1, NULL); 121 dns_name_init(&name2, NULL); 122 123 dns_rdata_toregion(rdata1, ®ion1); 124 dns_rdata_toregion(rdata2, ®ion2); 125 126 isc_region_consume(®ion1, 2); 127 isc_region_consume(®ion2, 2); 128 129 dns_name_fromregion(&name1, ®ion1); 130 dns_name_fromregion(&name2, ®ion2); 131 132 return (dns_name_rdatacompare(&name1, &name2)); 133 } 134 135 static inline isc_result_t 136 fromstruct_in_kx(ARGS_FROMSTRUCT) { 137 dns_rdata_in_kx_t *kx = source; 138 isc_region_t region; 139 140 REQUIRE(type == dns_rdatatype_kx); 141 REQUIRE(rdclass == dns_rdataclass_in); 142 REQUIRE(source != NULL); 143 REQUIRE(kx->common.rdtype == type); 144 REQUIRE(kx->common.rdclass == rdclass); 145 146 UNUSED(type); 147 UNUSED(rdclass); 148 149 RETERR(uint16_tobuffer(kx->preference, target)); 150 dns_name_toregion(&kx->exchange, ®ion); 151 return (isc_buffer_copyregion(target, ®ion)); 152 } 153 154 static inline isc_result_t 155 tostruct_in_kx(ARGS_TOSTRUCT) { 156 isc_region_t region; 157 dns_rdata_in_kx_t *kx = target; 158 dns_name_t name; 159 160 REQUIRE(rdata->type == dns_rdatatype_kx); 161 REQUIRE(rdata->rdclass == dns_rdataclass_in); 162 REQUIRE(target != NULL); 163 REQUIRE(rdata->length != 0); 164 165 kx->common.rdclass = rdata->rdclass; 166 kx->common.rdtype = rdata->type; 167 ISC_LINK_INIT(&kx->common, link); 168 169 dns_name_init(&name, NULL); 170 dns_rdata_toregion(rdata, ®ion); 171 172 kx->preference = uint16_fromregion(®ion); 173 isc_region_consume(®ion, 2); 174 175 dns_name_fromregion(&name, ®ion); 176 dns_name_init(&kx->exchange, NULL); 177 RETERR(name_duporclone(&name, &kx->exchange)); 178 return (ISC_R_SUCCESS); 179 } 180 181 static inline void 182 freestruct_in_kx(ARGS_FREESTRUCT) { 183 dns_rdata_in_kx_t *kx = source; 184 185 REQUIRE(source != NULL); 186 REQUIRE(kx->common.rdclass == dns_rdataclass_in); 187 REQUIRE(kx->common.rdtype == dns_rdatatype_kx); 188 189 dns_name_free(&kx->exchange); 190 } 191 192 static inline isc_boolean_t 193 checkowner_in_kx(ARGS_CHECKOWNER) { 194 195 REQUIRE(type == dns_rdatatype_kx); 196 REQUIRE(rdclass == dns_rdataclass_in); 197 198 UNUSED(name); 199 UNUSED(type); 200 UNUSED(rdclass); 201 UNUSED(wildcard); 202 203 return (ISC_TRUE); 204 } 205 206 static inline int 207 casecompare_in_kx(ARGS_COMPARE) { 208 return (compare_in_kx(rdata1, rdata2)); 209 } 210 211 #endif /* RDATA_IN_1_KX_36_C */ 212