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: nsec_47.c,v 1.12 2020/02/26 18:47:59 florian Exp $ */ 18 19 /* reviewed: Wed Mar 15 18:21:15 PST 2000 by brister */ 20 21 /* RFC 3845 */ 22 23 #ifndef RDATA_GENERIC_NSEC_47_C 24 #define RDATA_GENERIC_NSEC_47_C 25 26 /* 27 * The attributes do not include DNS_RDATATYPEATTR_SINGLETON 28 * because we must be able to handle a parent/child NSEC pair. 29 */ 30 31 static inline isc_result_t 32 totext_nsec(ARGS_TOTEXT) { 33 isc_region_t sr; 34 dns_name_t name; 35 36 REQUIRE(rdata->type == dns_rdatatype_nsec); 37 REQUIRE(rdata->length != 0); 38 39 UNUSED(tctx); 40 41 dns_name_init(&name, NULL); 42 dns_rdata_toregion(rdata, &sr); 43 dns_name_fromregion(&name, &sr); 44 isc_region_consume(&sr, name_length(&name)); 45 RETERR(dns_name_totext(&name, ISC_FALSE, target)); 46 /* 47 * Don't leave a trailing space when there's no typemap present. 48 */ 49 if (sr.length > 0) { 50 RETERR(isc_str_tobuffer(" ", target)); 51 } 52 return (typemap_totext(&sr, NULL, target)); 53 } 54 55 static /* inline */ isc_result_t 56 fromwire_nsec(ARGS_FROMWIRE) { 57 isc_region_t sr; 58 dns_name_t name; 59 60 REQUIRE(type == dns_rdatatype_nsec); 61 62 UNUSED(type); 63 UNUSED(rdclass); 64 65 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); 66 67 dns_name_init(&name, NULL); 68 RETERR(dns_name_fromwire(&name, source, dctx, options, target)); 69 70 isc_buffer_activeregion(source, &sr); 71 RETERR(typemap_test(&sr, ISC_FALSE)); 72 RETERR(isc_mem_tobuffer(target, sr.base, sr.length)); 73 isc_buffer_forward(source, sr.length); 74 return (ISC_R_SUCCESS); 75 } 76 77 static inline isc_result_t 78 towire_nsec(ARGS_TOWIRE) { 79 isc_region_t sr; 80 dns_name_t name; 81 dns_offsets_t offsets; 82 83 REQUIRE(rdata->type == dns_rdatatype_nsec); 84 REQUIRE(rdata->length != 0); 85 86 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE); 87 dns_name_init(&name, offsets); 88 dns_rdata_toregion(rdata, &sr); 89 dns_name_fromregion(&name, &sr); 90 isc_region_consume(&sr, name_length(&name)); 91 RETERR(dns_name_towire(&name, cctx, target)); 92 93 return (isc_mem_tobuffer(target, sr.base, sr.length)); 94 } 95 96 #endif /* RDATA_GENERIC_NSEC_47_C */ 97