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: soa_6.c,v 1.9 2020/09/14 08:40:43 florian Exp $ */ 18 19 /* Reviewed: Thu Mar 16 15:18:32 PST 2000 by explorer */ 20 21 #ifndef RDATA_GENERIC_SOA_6_C 22 #define RDATA_GENERIC_SOA_6_C 23 24 static const char *soa_fieldnames[5] = { 25 "serial", "refresh", "retry", "expire", "minimum" 26 }; 27 28 static inline isc_result_t 29 totext_soa(ARGS_TOTEXT) { 30 isc_region_t dregion; 31 dns_name_t mname; 32 dns_name_t rname; 33 dns_name_t prefix; 34 int sub; 35 int i; 36 int multiline; 37 int comm; 38 39 REQUIRE(rdata->type == dns_rdatatype_soa); 40 REQUIRE(rdata->length != 0); 41 42 multiline = (tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0; 43 if (multiline) 44 comm = (tctx->flags & DNS_STYLEFLAG_RRCOMMENT) != 0; 45 else 46 comm = 0; 47 48 dns_name_init(&mname, NULL); 49 dns_name_init(&rname, NULL); 50 dns_name_init(&prefix, NULL); 51 52 dns_rdata_toregion(rdata, &dregion); 53 54 dns_name_fromregion(&mname, &dregion); 55 isc_region_consume(&dregion, name_length(&mname)); 56 57 dns_name_fromregion(&rname, &dregion); 58 isc_region_consume(&dregion, name_length(&rname)); 59 60 sub = name_prefix(&mname, tctx->origin, &prefix); 61 RETERR(dns_name_totext(&prefix, sub, target)); 62 63 RETERR(isc_str_tobuffer(" ", target)); 64 65 sub = name_prefix(&rname, tctx->origin, &prefix); 66 RETERR(dns_name_totext(&prefix, sub, target)); 67 68 if (multiline) 69 RETERR(isc_str_tobuffer(" (" , target)); 70 RETERR(isc_str_tobuffer(tctx->linebreak, target)); 71 72 for (i = 0; i < 5; i++) { 73 char buf[sizeof("0123456789 ; ")]; 74 unsigned long num; 75 num = uint32_fromregion(&dregion); 76 isc_region_consume(&dregion, 4); 77 snprintf(buf, sizeof(buf), comm ? "%-10lu ; " : "%lu", num); 78 RETERR(isc_str_tobuffer(buf, target)); 79 if (comm) { 80 RETERR(isc_str_tobuffer(soa_fieldnames[i], target)); 81 /* Print times in week/day/hour/minute/second form */ 82 if (i >= 1) { 83 RETERR(isc_str_tobuffer(" (", target)); 84 RETERR(dns_ttl_totext(num, 1, target)); 85 RETERR(isc_str_tobuffer(")", target)); 86 } 87 RETERR(isc_str_tobuffer(tctx->linebreak, target)); 88 } else if (i < 4) { 89 RETERR(isc_str_tobuffer(tctx->linebreak, target)); 90 } 91 } 92 93 if (multiline) 94 RETERR(isc_str_tobuffer(")", target)); 95 96 return (ISC_R_SUCCESS); 97 } 98 99 static inline isc_result_t 100 fromwire_soa(ARGS_FROMWIRE) { 101 dns_name_t mname; 102 dns_name_t rname; 103 isc_region_t sregion; 104 isc_region_t tregion; 105 106 REQUIRE(type == dns_rdatatype_soa); 107 108 UNUSED(type); 109 UNUSED(rdclass); 110 111 dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14); 112 113 dns_name_init(&mname, NULL); 114 dns_name_init(&rname, NULL); 115 116 RETERR(dns_name_fromwire(&mname, source, dctx, options, target)); 117 RETERR(dns_name_fromwire(&rname, source, dctx, options, target)); 118 119 isc_buffer_activeregion(source, &sregion); 120 isc_buffer_availableregion(target, &tregion); 121 122 if (sregion.length < 20) 123 return (ISC_R_UNEXPECTEDEND); 124 if (tregion.length < 20) 125 return (ISC_R_NOSPACE); 126 127 memmove(tregion.base, sregion.base, 20); 128 isc_buffer_forward(source, 20); 129 isc_buffer_add(target, 20); 130 131 return (ISC_R_SUCCESS); 132 } 133 134 static inline isc_result_t 135 towire_soa(ARGS_TOWIRE) { 136 isc_region_t sregion; 137 isc_region_t tregion; 138 dns_name_t mname; 139 dns_name_t rname; 140 dns_offsets_t moffsets; 141 dns_offsets_t roffsets; 142 143 REQUIRE(rdata->type == dns_rdatatype_soa); 144 REQUIRE(rdata->length != 0); 145 146 dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14); 147 148 dns_name_init(&mname, moffsets); 149 dns_name_init(&rname, roffsets); 150 151 dns_rdata_toregion(rdata, &sregion); 152 153 dns_name_fromregion(&mname, &sregion); 154 isc_region_consume(&sregion, name_length(&mname)); 155 RETERR(dns_name_towire(&mname, cctx, target)); 156 157 dns_name_fromregion(&rname, &sregion); 158 isc_region_consume(&sregion, name_length(&rname)); 159 RETERR(dns_name_towire(&rname, cctx, target)); 160 161 isc_buffer_availableregion(target, &tregion); 162 if (tregion.length < 20) 163 return (ISC_R_NOSPACE); 164 165 memmove(tregion.base, sregion.base, 20); 166 isc_buffer_add(target, 20); 167 return (ISC_R_SUCCESS); 168 } 169 170 static inline isc_result_t 171 fromstruct_soa(ARGS_FROMSTRUCT) { 172 dns_rdata_soa_t *soa = source; 173 isc_region_t region; 174 175 REQUIRE(type == dns_rdatatype_soa); 176 REQUIRE(source != NULL); 177 REQUIRE(soa->common.rdtype == type); 178 REQUIRE(soa->common.rdclass == rdclass); 179 180 UNUSED(type); 181 UNUSED(rdclass); 182 183 dns_name_toregion(&soa->origin, ®ion); 184 RETERR(isc_buffer_copyregion(target, ®ion)); 185 dns_name_toregion(&soa->contact, ®ion); 186 RETERR(isc_buffer_copyregion(target, ®ion)); 187 RETERR(uint32_tobuffer(soa->serial, target)); 188 RETERR(uint32_tobuffer(soa->refresh, target)); 189 RETERR(uint32_tobuffer(soa->retry, target)); 190 RETERR(uint32_tobuffer(soa->expire, target)); 191 return (uint32_tobuffer(soa->minimum, target)); 192 } 193 194 static inline isc_result_t 195 tostruct_soa(ARGS_TOSTRUCT) { 196 isc_region_t region; 197 dns_rdata_soa_t *soa = target; 198 dns_name_t name; 199 isc_result_t result; 200 201 REQUIRE(rdata->type == dns_rdatatype_soa); 202 REQUIRE(target != NULL); 203 REQUIRE(rdata->length != 0); 204 205 soa->common.rdclass = rdata->rdclass; 206 soa->common.rdtype = rdata->type; 207 ISC_LINK_INIT(&soa->common, link); 208 209 dns_rdata_toregion(rdata, ®ion); 210 211 dns_name_init(&name, NULL); 212 dns_name_fromregion(&name, ®ion); 213 isc_region_consume(®ion, name_length(&name)); 214 dns_name_init(&soa->origin, NULL); 215 RETERR(name_duporclone(&name, &soa->origin)); 216 217 dns_name_fromregion(&name, ®ion); 218 isc_region_consume(®ion, name_length(&name)); 219 dns_name_init(&soa->contact, NULL); 220 result = name_duporclone(&name, &soa->contact); 221 if (result != ISC_R_SUCCESS) 222 goto cleanup; 223 224 soa->serial = uint32_fromregion(®ion); 225 isc_region_consume(®ion, 4); 226 227 soa->refresh = uint32_fromregion(®ion); 228 isc_region_consume(®ion, 4); 229 230 soa->retry = uint32_fromregion(®ion); 231 isc_region_consume(®ion, 4); 232 233 soa->expire = uint32_fromregion(®ion); 234 isc_region_consume(®ion, 4); 235 236 soa->minimum = uint32_fromregion(®ion); 237 238 return (ISC_R_SUCCESS); 239 240 cleanup: 241 dns_name_free(&soa->origin); 242 return (ISC_R_NOMEMORY); 243 } 244 245 static inline void 246 freestruct_soa(ARGS_FREESTRUCT) { 247 dns_rdata_soa_t *soa = source; 248 249 REQUIRE(source != NULL); 250 REQUIRE(soa->common.rdtype == dns_rdatatype_soa); 251 252 dns_name_free(&soa->origin); 253 dns_name_free(&soa->contact); 254 } 255 256 #endif /* RDATA_GENERIC_SOA_6_C */ 257