2 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1998-2001, 2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or 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 1.56 2007/06/19 23:47:17 tbox 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
29 #define RRTYPE_MX_ATTRIBUTES (0)
32 check_mx(isc_token_t *token) {
33 char tmp[sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:123.123.123.123.")];
35 struct in6_addr addr6;
37 if (strlcpy(tmp, DNS_AS_STR(*token), sizeof(tmp)) >= sizeof(tmp))
40 if (tmp[strlen(tmp) - 1] == '.')
41 tmp[strlen(tmp) - 1] = '\0';
42 if (inet_aton(tmp, &addr) == 1 ||
43 inet_pton(AF_INET6, tmp, &addr6) == 1)
49 static inline isc_result_t
50 fromtext_mx(ARGS_FROMTEXT) {
62 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
64 if (token.value.as_ulong > 0xffffU)
66 RETERR(uint16_tobuffer(token.value.as_ulong, target));
68 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
72 if ((options & DNS_RDATA_CHECKMX) != 0)
73 ok = check_mx(&token);
74 if (!ok && (options & DNS_RDATA_CHECKMXFAIL) != 0)
75 RETTOK(DNS_R_MXISADDRESS);
76 if (!ok && callbacks != NULL)
77 warn_badmx(&token, lexer, callbacks);
79 dns_name_init(&name, NULL);
80 buffer_fromregion(&buffer, &token.value.as_region);
81 origin = (origin != NULL) ? origin : dns_rootname;
82 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
84 if ((options & DNS_RDATA_CHECKNAMES) != 0)
85 ok = dns_name_ishostname(&name, ISC_FALSE);
86 if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
87 RETTOK(DNS_R_BADNAME);
88 if (!ok && callbacks != NULL)
89 warn_badname(&name, lexer, callbacks);
90 return (ISC_R_SUCCESS);
93 static inline isc_result_t
94 totext_mx(ARGS_TOTEXT) {
99 char buf[sizeof("64000")];
102 REQUIRE(rdata->type == 15);
103 REQUIRE(rdata->length != 0);
105 dns_name_init(&name, NULL);
106 dns_name_init(&prefix, NULL);
108 dns_rdata_toregion(rdata, ®ion);
109 num = uint16_fromregion(®ion);
110 isc_region_consume(®ion, 2);
111 sprintf(buf, "%u", num);
112 RETERR(str_totext(buf, target));
114 RETERR(str_totext(" ", target));
116 dns_name_fromregion(&name, ®ion);
117 sub = name_prefix(&name, tctx->origin, &prefix);
118 return (dns_name_totext(&prefix, sub, target));
121 static inline isc_result_t
122 fromwire_mx(ARGS_FROMWIRE) {
124 isc_region_t sregion;
131 dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
133 dns_name_init(&name, NULL);
135 isc_buffer_activeregion(source, &sregion);
136 if (sregion.length < 2)
137 return (ISC_R_UNEXPECTEDEND);
138 RETERR(mem_tobuffer(target, sregion.base, 2));
139 isc_buffer_forward(source, 2);
140 return (dns_name_fromwire(&name, source, dctx, options, target));
143 static inline isc_result_t
144 towire_mx(ARGS_TOWIRE) {
146 dns_offsets_t offsets;
149 REQUIRE(rdata->type == 15);
150 REQUIRE(rdata->length != 0);
152 dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
154 dns_rdata_toregion(rdata, ®ion);
155 RETERR(mem_tobuffer(target, region.base, 2));
156 isc_region_consume(®ion, 2);
158 dns_name_init(&name, offsets);
159 dns_name_fromregion(&name, ®ion);
161 return (dns_name_towire(&name, cctx, target));
165 compare_mx(ARGS_COMPARE) {
168 isc_region_t region1;
169 isc_region_t region2;
172 REQUIRE(rdata1->type == rdata2->type);
173 REQUIRE(rdata1->rdclass == rdata2->rdclass);
174 REQUIRE(rdata1->type == 15);
175 REQUIRE(rdata1->length != 0);
176 REQUIRE(rdata2->length != 0);
178 order = memcmp(rdata1->data, rdata2->data, 2);
180 return (order < 0 ? -1 : 1);
182 dns_name_init(&name1, NULL);
183 dns_name_init(&name2, NULL);
185 dns_rdata_toregion(rdata1, ®ion1);
186 dns_rdata_toregion(rdata2, ®ion2);
188 isc_region_consume(®ion1, 2);
189 isc_region_consume(®ion2, 2);
191 dns_name_fromregion(&name1, ®ion1);
192 dns_name_fromregion(&name2, ®ion2);
194 return (dns_name_rdatacompare(&name1, &name2));
197 static inline isc_result_t
198 fromstruct_mx(ARGS_FROMSTRUCT) {
199 dns_rdata_mx_t *mx = source;
203 REQUIRE(source != NULL);
204 REQUIRE(mx->common.rdtype == type);
205 REQUIRE(mx->common.rdclass == rdclass);
210 RETERR(uint16_tobuffer(mx->pref, target));
211 dns_name_toregion(&mx->mx, ®ion);
212 return (isc_buffer_copyregion(target, ®ion));
215 static inline isc_result_t
216 tostruct_mx(ARGS_TOSTRUCT) {
218 dns_rdata_mx_t *mx = target;
221 REQUIRE(rdata->type == 15);
222 REQUIRE(target != NULL);
223 REQUIRE(rdata->length != 0);
225 mx->common.rdclass = rdata->rdclass;
226 mx->common.rdtype = rdata->type;
227 ISC_LINK_INIT(&mx->common, link);
229 dns_name_init(&name, NULL);
230 dns_rdata_toregion(rdata, ®ion);
231 mx->pref = uint16_fromregion(®ion);
232 isc_region_consume(®ion, 2);
233 dns_name_fromregion(&name, ®ion);
234 dns_name_init(&mx->mx, NULL);
235 RETERR(name_duporclone(&name, mctx, &mx->mx));
237 return (ISC_R_SUCCESS);
241 freestruct_mx(ARGS_FREESTRUCT) {
242 dns_rdata_mx_t *mx = source;
244 REQUIRE(source != NULL);
245 REQUIRE(mx->common.rdtype == 15);
247 if (mx->mctx == NULL)
250 dns_name_free(&mx->mx, mx->mctx);
254 static inline isc_result_t
255 additionaldata_mx(ARGS_ADDLDATA) {
257 dns_offsets_t offsets;
260 REQUIRE(rdata->type == 15);
262 dns_name_init(&name, offsets);
263 dns_rdata_toregion(rdata, ®ion);
264 isc_region_consume(®ion, 2);
265 dns_name_fromregion(&name, ®ion);
267 return ((add)(arg, &name, dns_rdatatype_a));
270 static inline isc_result_t
271 digest_mx(ARGS_DIGEST) {
275 REQUIRE(rdata->type == 15);
277 dns_rdata_toregion(rdata, &r1);
279 isc_region_consume(&r2, 2);
281 RETERR((digest)(arg, &r1));
282 dns_name_init(&name, NULL);
283 dns_name_fromregion(&name, &r2);
284 return (dns_name_digest(&name, digest, arg));
287 static inline isc_boolean_t
288 checkowner_mx(ARGS_CHECKOWNER) {
295 return (dns_name_ishostname(name, wildcard));
298 static inline isc_boolean_t
299 checknames_mx(ARGS_CHECKNAMES) {
303 REQUIRE(rdata->type == 15);
307 dns_rdata_toregion(rdata, ®ion);
308 isc_region_consume(®ion, 2);
309 dns_name_init(&name, NULL);
310 dns_name_fromregion(&name, ®ion);
311 if (!dns_name_ishostname(&name, ISC_FALSE)) {
313 dns_name_clone(&name, bad);
319 #endif /* RDATA_GENERIC_MX_15_C */