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: srv_33.c,v 1.11 2020/02/26 18:47:25 florian Exp $ */ 18 19 /* Reviewed: Fri Mar 17 13:01:00 PST 2000 by bwelling */ 20 21 /* RFC2782 */ 22 23 #ifndef RDATA_IN_1_SRV_33_C 24 #define RDATA_IN_1_SRV_33_C 25 26 static inline isc_result_t 27 totext_in_srv(ARGS_TOTEXT) { 28 isc_region_t region; 29 dns_name_t name; 30 dns_name_t prefix; 31 isc_boolean_t sub; 32 char buf[sizeof("64000")]; 33 unsigned short num; 34 35 REQUIRE(rdata->type == dns_rdatatype_srv); 36 REQUIRE(rdata->rdclass == dns_rdataclass_in); 37 REQUIRE(rdata->length != 0); 38 39 dns_name_init(&name, NULL); 40 dns_name_init(&prefix, NULL); 41 42 /* 43 * Priority. 44 */ 45 dns_rdata_toregion(rdata, ®ion); 46 num = uint16_fromregion(®ion); 47 isc_region_consume(®ion, 2); 48 snprintf(buf, sizeof buf, "%u", num); 49 RETERR(str_totext(buf, target)); 50 RETERR(str_totext(" ", target)); 51 52 /* 53 * Weight. 54 */ 55 num = uint16_fromregion(®ion); 56 isc_region_consume(®ion, 2); 57 snprintf(buf, sizeof buf, "%u", num); 58 RETERR(str_totext(buf, target)); 59 RETERR(str_totext(" ", target)); 60 61 /* 62 * Port. 63 */ 64 num = uint16_fromregion(®ion); 65 isc_region_consume(®ion, 2); 66 snprintf(buf, sizeof buf, "%u", num); 67 RETERR(str_totext(buf, target)); 68 RETERR(str_totext(" ", target)); 69 70 /* 71 * Target. 72 */ 73 dns_name_fromregion(&name, ®ion); 74 sub = name_prefix(&name, tctx->origin, &prefix); 75 return (dns_name_totext(&prefix, sub, target)); 76 } 77 78 static inline isc_result_t 79 fromwire_in_srv(ARGS_FROMWIRE) { 80 dns_name_t name; 81 isc_region_t sr; 82 83 REQUIRE(type == dns_rdatatype_srv); 84 REQUIRE(rdclass == dns_rdataclass_in); 85 86 UNUSED(type); 87 UNUSED(rdclass); 88 89 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); 90 91 dns_name_init(&name, NULL); 92 93 /* 94 * Priority, weight, port. 95 */ 96 isc_buffer_activeregion(source, &sr); 97 if (sr.length < 6) 98 return (ISC_R_UNEXPECTEDEND); 99 RETERR(isc_mem_tobuffer(target, sr.base, 6)); 100 isc_buffer_forward(source, 6); 101 102 /* 103 * Target. 104 */ 105 return (dns_name_fromwire(&name, source, dctx, options, target)); 106 } 107 108 static inline isc_result_t 109 towire_in_srv(ARGS_TOWIRE) { 110 dns_name_t name; 111 dns_offsets_t offsets; 112 isc_region_t sr; 113 114 REQUIRE(rdata->type == dns_rdatatype_srv); 115 REQUIRE(rdata->length != 0); 116 117 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE); 118 /* 119 * Priority, weight, port. 120 */ 121 dns_rdata_toregion(rdata, &sr); 122 RETERR(isc_mem_tobuffer(target, sr.base, 6)); 123 isc_region_consume(&sr, 6); 124 125 /* 126 * Target. 127 */ 128 dns_name_init(&name, offsets); 129 dns_name_fromregion(&name, &sr); 130 return (dns_name_towire(&name, cctx, target)); 131 } 132 133 #endif /* RDATA_IN_1_SRV_33_C */ 134