2 * Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2003 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: nxt_30.c,v 1.59.18.2 2005/04/29 00:16:38 marka Exp $ */
20 /* reviewed: Wed Mar 15 18:21:15 PST 2000 by brister */
24 #ifndef RDATA_GENERIC_NXT_30_C
25 #define RDATA_GENERIC_NXT_30_C
28 * The attributes do not include DNS_RDATATYPEATTR_SINGLETON
29 * because we must be able to handle a parent/child NXT pair.
31 #define RRTYPE_NXT_ATTRIBUTES (0)
33 static inline isc_result_t
34 fromtext_nxt(ARGS_FROMTEXT) {
39 unsigned char bm[8*1024]; /* 64k bits */
40 dns_rdatatype_t covered;
41 dns_rdatatype_t maxcovered = 0;
42 isc_boolean_t first = ISC_TRUE;
54 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
56 dns_name_init(&name, NULL);
57 buffer_fromregion(&buffer, &token.value.as_region);
58 origin = (origin != NULL) ? origin : dns_rootname;
59 RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
61 memset(bm, 0, sizeof(bm));
63 RETERR(isc_lex_getmastertoken(lexer, &token,
64 isc_tokentype_string, ISC_TRUE));
65 if (token.type != isc_tokentype_string)
67 n = strtol(DNS_AS_STR(token), &e, 10);
68 if (e != DNS_AS_STR(token) && *e == '\0') {
69 covered = (dns_rdatatype_t)n;
70 } else if (dns_rdatatype_fromtext(&covered,
71 &token.value.as_textregion) == DNS_R_UNKNOWN)
72 RETTOK(DNS_R_UNKNOWN);
74 * NXT is only specified for types 1..127.
76 if (covered < 1 || covered > 127)
78 if (first || covered > maxcovered)
81 bm[covered/8] |= (0x80>>(covered%8));
83 isc_lex_ungettoken(lexer, &token);
85 return (ISC_R_SUCCESS);
86 n = (maxcovered + 8) / 8;
87 return (mem_tobuffer(target, bm, n));
90 static inline isc_result_t
91 totext_nxt(ARGS_TOTEXT) {
98 REQUIRE(rdata->type == 30);
99 REQUIRE(rdata->length != 0);
101 dns_name_init(&name, NULL);
102 dns_name_init(&prefix, NULL);
103 dns_rdata_toregion(rdata, &sr);
104 dns_name_fromregion(&name, &sr);
105 isc_region_consume(&sr, name_length(&name));
106 sub = name_prefix(&name, tctx->origin, &prefix);
107 RETERR(dns_name_totext(&prefix, sub, target));
109 for (i = 0; i < sr.length; i++) {
111 for (j = 0; j < 8; j++)
112 if ((sr.base[i] & (0x80 >> j)) != 0) {
113 dns_rdatatype_t t = i * 8 + j;
114 RETERR(str_totext(" ", target));
115 if (dns_rdatatype_isknown(t)) {
116 RETERR(dns_rdatatype_totext(t,
119 char buf[sizeof("65535")];
120 sprintf(buf, "%u", t);
121 RETERR(str_totext(buf,
126 return (ISC_R_SUCCESS);
129 static inline isc_result_t
130 fromwire_nxt(ARGS_FROMWIRE) {
139 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
141 dns_name_init(&name, NULL);
142 RETERR(dns_name_fromwire(&name, source, dctx, options, target));
144 isc_buffer_activeregion(source, &sr);
145 if (sr.length > 0 && (sr.base[0] & 0x80) == 0 &&
146 ((sr.length > 16) || sr.base[sr.length - 1] == 0))
147 return (DNS_R_BADBITMAP);
148 RETERR(mem_tobuffer(target, sr.base, sr.length));
149 isc_buffer_forward(source, sr.length);
150 return (ISC_R_SUCCESS);
153 static inline isc_result_t
154 towire_nxt(ARGS_TOWIRE) {
157 dns_offsets_t offsets;
159 REQUIRE(rdata->type == 30);
160 REQUIRE(rdata->length != 0);
162 dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
163 dns_name_init(&name, offsets);
164 dns_rdata_toregion(rdata, &sr);
165 dns_name_fromregion(&name, &sr);
166 isc_region_consume(&sr, name_length(&name));
167 RETERR(dns_name_towire(&name, cctx, target));
169 return (mem_tobuffer(target, sr.base, sr.length));
173 compare_nxt(ARGS_COMPARE) {
180 REQUIRE(rdata1->type == rdata2->type);
181 REQUIRE(rdata1->rdclass == rdata2->rdclass);
182 REQUIRE(rdata1->type == 30);
183 REQUIRE(rdata1->length != 0);
184 REQUIRE(rdata2->length != 0);
186 dns_name_init(&name1, NULL);
187 dns_name_init(&name2, NULL);
188 dns_rdata_toregion(rdata1, &r1);
189 dns_rdata_toregion(rdata2, &r2);
190 dns_name_fromregion(&name1, &r1);
191 dns_name_fromregion(&name2, &r2);
192 order = dns_name_rdatacompare(&name1, &name2);
196 return (isc_region_compare(&r1, &r2));
199 static inline isc_result_t
200 fromstruct_nxt(ARGS_FROMSTRUCT) {
201 dns_rdata_nxt_t *nxt = source;
205 REQUIRE(source != NULL);
206 REQUIRE(nxt->common.rdtype == type);
207 REQUIRE(nxt->common.rdclass == rdclass);
208 REQUIRE(nxt->typebits != NULL || nxt->len == 0);
209 if (nxt->typebits != NULL && (nxt->typebits[0] & 0x80) == 0) {
210 REQUIRE(nxt->len <= 16);
211 REQUIRE(nxt->typebits[nxt->len - 1] != 0);
217 dns_name_toregion(&nxt->next, ®ion);
218 RETERR(isc_buffer_copyregion(target, ®ion));
220 return (mem_tobuffer(target, nxt->typebits, nxt->len));
223 static inline isc_result_t
224 tostruct_nxt(ARGS_TOSTRUCT) {
226 dns_rdata_nxt_t *nxt = target;
229 REQUIRE(rdata->type == 30);
230 REQUIRE(target != NULL);
231 REQUIRE(rdata->length != 0);
233 nxt->common.rdclass = rdata->rdclass;
234 nxt->common.rdtype = rdata->type;
235 ISC_LINK_INIT(&nxt->common, link);
237 dns_name_init(&name, NULL);
238 dns_rdata_toregion(rdata, ®ion);
239 dns_name_fromregion(&name, ®ion);
240 isc_region_consume(®ion, name_length(&name));
241 dns_name_init(&nxt->next, NULL);
242 RETERR(name_duporclone(&name, mctx, &nxt->next));
244 nxt->len = region.length;
245 nxt->typebits = mem_maybedup(mctx, region.base, region.length);
246 if (nxt->typebits == NULL)
250 return (ISC_R_SUCCESS);
254 dns_name_free(&nxt->next, mctx);
255 return (ISC_R_NOMEMORY);
259 freestruct_nxt(ARGS_FREESTRUCT) {
260 dns_rdata_nxt_t *nxt = source;
262 REQUIRE(source != NULL);
263 REQUIRE(nxt->common.rdtype == 30);
265 if (nxt->mctx == NULL)
268 dns_name_free(&nxt->next, nxt->mctx);
269 if (nxt->typebits != NULL)
270 isc_mem_free(nxt->mctx, nxt->typebits);
274 static inline isc_result_t
275 additionaldata_nxt(ARGS_ADDLDATA) {
276 REQUIRE(rdata->type == 30);
282 return (ISC_R_SUCCESS);
285 static inline isc_result_t
286 digest_nxt(ARGS_DIGEST) {
291 REQUIRE(rdata->type == 30);
293 dns_rdata_toregion(rdata, &r);
294 dns_name_init(&name, NULL);
295 dns_name_fromregion(&name, &r);
296 result = dns_name_digest(&name, digest, arg);
297 if (result != ISC_R_SUCCESS)
299 isc_region_consume(&r, name_length(&name));
301 return ((digest)(arg, &r));
304 static inline isc_boolean_t
305 checkowner_nxt(ARGS_CHECKOWNER) {
317 static inline isc_boolean_t
318 checknames_nxt(ARGS_CHECKNAMES) {
320 REQUIRE(rdata->type == 30);
329 #endif /* RDATA_GENERIC_NXT_30_C */