2 * Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1998-2001, 2003 Internet Software Consortium.
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.
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.
18 /* $Id: mx_15.c,v 1.48.2.3 2004/03/09 06:11:31 marka Exp $ */
20 /* reviewed: Wed Mar 15 18:05:46 PST 2000 by brister */
22 #ifndef RDATA_GENERIC_MX_15_C
23 #define RDATA_GENERIC_MX_15_C
25 #define RRTYPE_MX_ATTRIBUTES (0)
27 static inline isc_result_t
28 fromtext_mx(ARGS_FROMTEXT) {
39 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
41 if (token.value.as_ulong > 0xffffU)
43 RETERR(uint16_tobuffer(token.value.as_ulong, target));
45 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
47 dns_name_init(&name, NULL);
48 buffer_fromregion(&buffer, &token.value.as_region);
49 origin = (origin != NULL) ? origin : dns_rootname;
50 RETTOK(dns_name_fromtext(&name, &buffer, origin, downcase, target));
51 return (ISC_R_SUCCESS);
54 static inline isc_result_t
55 totext_mx(ARGS_TOTEXT) {
60 char buf[sizeof "64000"];
63 REQUIRE(rdata->type == 15);
64 REQUIRE(rdata->length != 0);
66 dns_name_init(&name, NULL);
67 dns_name_init(&prefix, NULL);
69 dns_rdata_toregion(rdata, ®ion);
70 num = uint16_fromregion(®ion);
71 isc_region_consume(®ion, 2);
72 sprintf(buf, "%u", num);
73 RETERR(str_totext(buf, target));
75 RETERR(str_totext(" ", target));
77 dns_name_fromregion(&name, ®ion);
78 sub = name_prefix(&name, tctx->origin, &prefix);
79 return (dns_name_totext(&prefix, sub, target));
82 static inline isc_result_t
83 fromwire_mx(ARGS_FROMWIRE) {
92 dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
94 dns_name_init(&name, NULL);
96 isc_buffer_activeregion(source, &sregion);
97 if (sregion.length < 2)
98 return (ISC_R_UNEXPECTEDEND);
99 RETERR(mem_tobuffer(target, sregion.base, 2));
100 isc_buffer_forward(source, 2);
101 return (dns_name_fromwire(&name, source, dctx, downcase, target));
104 static inline isc_result_t
105 towire_mx(ARGS_TOWIRE) {
107 dns_offsets_t offsets;
110 REQUIRE(rdata->type == 15);
111 REQUIRE(rdata->length != 0);
113 dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
115 dns_rdata_toregion(rdata, ®ion);
116 RETERR(mem_tobuffer(target, region.base, 2));
117 isc_region_consume(®ion, 2);
119 dns_name_init(&name, offsets);
120 dns_name_fromregion(&name, ®ion);
122 return (dns_name_towire(&name, cctx, target));
126 compare_mx(ARGS_COMPARE) {
129 isc_region_t region1;
130 isc_region_t region2;
133 REQUIRE(rdata1->type == rdata2->type);
134 REQUIRE(rdata1->rdclass == rdata2->rdclass);
135 REQUIRE(rdata1->type == 15);
136 REQUIRE(rdata1->length != 0);
137 REQUIRE(rdata2->length != 0);
139 order = memcmp(rdata1->data, rdata2->data, 2);
141 return (order < 0 ? -1 : 1);
143 dns_name_init(&name1, NULL);
144 dns_name_init(&name2, NULL);
146 dns_rdata_toregion(rdata1, ®ion1);
147 dns_rdata_toregion(rdata2, ®ion2);
149 isc_region_consume(®ion1, 2);
150 isc_region_consume(®ion2, 2);
152 dns_name_fromregion(&name1, ®ion1);
153 dns_name_fromregion(&name2, ®ion2);
155 return (dns_name_rdatacompare(&name1, &name2));
158 static inline isc_result_t
159 fromstruct_mx(ARGS_FROMSTRUCT) {
160 dns_rdata_mx_t *mx = source;
164 REQUIRE(source != NULL);
165 REQUIRE(mx->common.rdtype == type);
166 REQUIRE(mx->common.rdclass == rdclass);
171 RETERR(uint16_tobuffer(mx->pref, target));
172 dns_name_toregion(&mx->mx, ®ion);
173 return (isc_buffer_copyregion(target, ®ion));
176 static inline isc_result_t
177 tostruct_mx(ARGS_TOSTRUCT) {
179 dns_rdata_mx_t *mx = target;
182 REQUIRE(rdata->type == 15);
183 REQUIRE(target != NULL);
184 REQUIRE(rdata->length != 0);
186 mx->common.rdclass = rdata->rdclass;
187 mx->common.rdtype = rdata->type;
188 ISC_LINK_INIT(&mx->common, link);
190 dns_name_init(&name, NULL);
191 dns_rdata_toregion(rdata, ®ion);
192 mx->pref = uint16_fromregion(®ion);
193 isc_region_consume(®ion, 2);
194 dns_name_fromregion(&name, ®ion);
195 dns_name_init(&mx->mx, NULL);
196 RETERR(name_duporclone(&name, mctx, &mx->mx));
198 return (ISC_R_SUCCESS);
202 freestruct_mx(ARGS_FREESTRUCT) {
203 dns_rdata_mx_t *mx = source;
205 REQUIRE(source != NULL);
206 REQUIRE(mx->common.rdtype == 15);
208 if (mx->mctx == NULL)
211 dns_name_free(&mx->mx, mx->mctx);
215 static inline isc_result_t
216 additionaldata_mx(ARGS_ADDLDATA) {
218 dns_offsets_t offsets;
221 REQUIRE(rdata->type == 15);
223 dns_name_init(&name, offsets);
224 dns_rdata_toregion(rdata, ®ion);
225 isc_region_consume(®ion, 2);
226 dns_name_fromregion(&name, ®ion);
228 return ((add)(arg, &name, dns_rdatatype_a));
231 static inline isc_result_t
232 digest_mx(ARGS_DIGEST) {
236 REQUIRE(rdata->type == 15);
238 dns_rdata_toregion(rdata, &r1);
240 isc_region_consume(&r2, 2);
242 RETERR((digest)(arg, &r1));
243 dns_name_init(&name, NULL);
244 dns_name_fromregion(&name, &r2);
245 return (dns_name_digest(&name, digest, arg));
248 #endif /* RDATA_GENERIC_MX_15_C */