2 * Copyright (C) 2004, 2005, 2007, 2009, 2012 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 1.58 2009/12/04 22:06:37 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) {
61 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
63 if (token.value.as_ulong > 0xffffU)
65 RETERR(uint16_tobuffer(token.value.as_ulong, target));
67 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
71 if ((options & DNS_RDATA_CHECKMX) != 0)
72 ok = check_mx(&token);
73 if (!ok && (options & DNS_RDATA_CHECKMXFAIL) != 0)
74 RETTOK(DNS_R_MXISADDRESS);
75 if (!ok && callbacks != NULL)
76 warn_badmx(&token, lexer, callbacks);
78 dns_name_init(&name, NULL);
79 buffer_fromregion(&buffer, &token.value.as_region);
80 origin = (origin != NULL) ? origin : dns_rootname;
81 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
83 if ((options & DNS_RDATA_CHECKNAMES) != 0)
84 ok = dns_name_ishostname(&name, ISC_FALSE);
85 if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
86 RETTOK(DNS_R_BADNAME);
87 if (!ok && callbacks != NULL)
88 warn_badname(&name, lexer, callbacks);
89 return (ISC_R_SUCCESS);
92 static inline isc_result_t
93 totext_mx(ARGS_TOTEXT) {
98 char buf[sizeof("64000")];
101 REQUIRE(rdata->type == 15);
102 REQUIRE(rdata->length != 0);
104 dns_name_init(&name, NULL);
105 dns_name_init(&prefix, NULL);
107 dns_rdata_toregion(rdata, ®ion);
108 num = uint16_fromregion(®ion);
109 isc_region_consume(®ion, 2);
110 sprintf(buf, "%u", num);
111 RETERR(str_totext(buf, target));
113 RETERR(str_totext(" ", target));
115 dns_name_fromregion(&name, ®ion);
116 sub = name_prefix(&name, tctx->origin, &prefix);
117 return (dns_name_totext(&prefix, sub, target));
120 static inline isc_result_t
121 fromwire_mx(ARGS_FROMWIRE) {
123 isc_region_t sregion;
130 dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
132 dns_name_init(&name, NULL);
134 isc_buffer_activeregion(source, &sregion);
135 if (sregion.length < 2)
136 return (ISC_R_UNEXPECTEDEND);
137 RETERR(mem_tobuffer(target, sregion.base, 2));
138 isc_buffer_forward(source, 2);
139 return (dns_name_fromwire(&name, source, dctx, options, target));
142 static inline isc_result_t
143 towire_mx(ARGS_TOWIRE) {
145 dns_offsets_t offsets;
148 REQUIRE(rdata->type == 15);
149 REQUIRE(rdata->length != 0);
151 dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
153 dns_rdata_toregion(rdata, ®ion);
154 RETERR(mem_tobuffer(target, region.base, 2));
155 isc_region_consume(®ion, 2);
157 dns_name_init(&name, offsets);
158 dns_name_fromregion(&name, ®ion);
160 return (dns_name_towire(&name, cctx, target));
164 compare_mx(ARGS_COMPARE) {
167 isc_region_t region1;
168 isc_region_t region2;
171 REQUIRE(rdata1->type == rdata2->type);
172 REQUIRE(rdata1->rdclass == rdata2->rdclass);
173 REQUIRE(rdata1->type == 15);
174 REQUIRE(rdata1->length != 0);
175 REQUIRE(rdata2->length != 0);
177 order = memcmp(rdata1->data, rdata2->data, 2);
179 return (order < 0 ? -1 : 1);
181 dns_name_init(&name1, NULL);
182 dns_name_init(&name2, NULL);
184 dns_rdata_toregion(rdata1, ®ion1);
185 dns_rdata_toregion(rdata2, ®ion2);
187 isc_region_consume(®ion1, 2);
188 isc_region_consume(®ion2, 2);
190 dns_name_fromregion(&name1, ®ion1);
191 dns_name_fromregion(&name2, ®ion2);
193 return (dns_name_rdatacompare(&name1, &name2));
196 static inline isc_result_t
197 fromstruct_mx(ARGS_FROMSTRUCT) {
198 dns_rdata_mx_t *mx = source;
202 REQUIRE(source != NULL);
203 REQUIRE(mx->common.rdtype == type);
204 REQUIRE(mx->common.rdclass == rdclass);
209 RETERR(uint16_tobuffer(mx->pref, target));
210 dns_name_toregion(&mx->mx, ®ion);
211 return (isc_buffer_copyregion(target, ®ion));
214 static inline isc_result_t
215 tostruct_mx(ARGS_TOSTRUCT) {
217 dns_rdata_mx_t *mx = target;
220 REQUIRE(rdata->type == 15);
221 REQUIRE(target != NULL);
222 REQUIRE(rdata->length != 0);
224 mx->common.rdclass = rdata->rdclass;
225 mx->common.rdtype = rdata->type;
226 ISC_LINK_INIT(&mx->common, link);
228 dns_name_init(&name, NULL);
229 dns_rdata_toregion(rdata, ®ion);
230 mx->pref = uint16_fromregion(®ion);
231 isc_region_consume(®ion, 2);
232 dns_name_fromregion(&name, ®ion);
233 dns_name_init(&mx->mx, NULL);
234 RETERR(name_duporclone(&name, mctx, &mx->mx));
236 return (ISC_R_SUCCESS);
240 freestruct_mx(ARGS_FREESTRUCT) {
241 dns_rdata_mx_t *mx = source;
243 REQUIRE(source != NULL);
244 REQUIRE(mx->common.rdtype == 15);
246 if (mx->mctx == NULL)
249 dns_name_free(&mx->mx, mx->mctx);
253 static inline isc_result_t
254 additionaldata_mx(ARGS_ADDLDATA) {
256 dns_offsets_t offsets;
259 REQUIRE(rdata->type == 15);
261 dns_name_init(&name, offsets);
262 dns_rdata_toregion(rdata, ®ion);
263 isc_region_consume(®ion, 2);
264 dns_name_fromregion(&name, ®ion);
266 return ((add)(arg, &name, dns_rdatatype_a));
269 static inline isc_result_t
270 digest_mx(ARGS_DIGEST) {
274 REQUIRE(rdata->type == 15);
276 dns_rdata_toregion(rdata, &r1);
278 isc_region_consume(&r2, 2);
280 RETERR((digest)(arg, &r1));
281 dns_name_init(&name, NULL);
282 dns_name_fromregion(&name, &r2);
283 return (dns_name_digest(&name, digest, arg));
286 static inline isc_boolean_t
287 checkowner_mx(ARGS_CHECKOWNER) {
294 return (dns_name_ishostname(name, wildcard));
297 static inline isc_boolean_t
298 checknames_mx(ARGS_CHECKNAMES) {
302 REQUIRE(rdata->type == 15);
306 dns_rdata_toregion(rdata, ®ion);
307 isc_region_consume(®ion, 2);
308 dns_name_init(&name, NULL);
309 dns_name_fromregion(&name, ®ion);
310 if (!dns_name_ishostname(&name, ISC_FALSE)) {
312 dns_name_clone(&name, bad);
319 casecompare_mx(ARGS_COMPARE) {
320 return (compare_mx(rdata1, rdata2));
323 #endif /* RDATA_GENERIC_MX_15_C */