1 /* $NetBSD: lp_107.c,v 1.7 2022/09/23 12:15:31 christos Exp $ */
2
3 /*
4 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
5 *
6 * SPDX-License-Identifier: MPL-2.0
7 *
8 * This Source Code Form is subject to the terms of the Mozilla Public
9 * License, v. 2.0. If a copy of the MPL was not distributed with this
10 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
11 *
12 * See the COPYRIGHT file distributed with this work for additional
13 * information regarding copyright ownership.
14 */
15
16 #ifndef RDATA_GENERIC_LP_107_C
17 #define RDATA_GENERIC_LP_107_C
18
19 #include <string.h>
20
21 #include <isc/net.h>
22
23 #define RRTYPE_LP_ATTRIBUTES (0)
24
25 static isc_result_t
fromtext_lp(ARGS_FROMTEXT)26 fromtext_lp(ARGS_FROMTEXT) {
27 isc_token_t token;
28 dns_name_t name;
29 isc_buffer_t buffer;
30
31 REQUIRE(type == dns_rdatatype_lp);
32
33 UNUSED(type);
34 UNUSED(rdclass);
35 UNUSED(callbacks);
36
37 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
38 false));
39 if (token.value.as_ulong > 0xffffU) {
40 RETTOK(ISC_R_RANGE);
41 }
42 RETERR(uint16_tobuffer(token.value.as_ulong, target));
43
44 RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
45 false));
46
47 dns_name_init(&name, NULL);
48 buffer_fromregion(&buffer, &token.value.as_region);
49 if (origin == NULL) {
50 origin = dns_rootname;
51 }
52 return (dns_name_fromtext(&name, &buffer, origin, options, target));
53 }
54
55 static isc_result_t
totext_lp(ARGS_TOTEXT)56 totext_lp(ARGS_TOTEXT) {
57 isc_region_t region;
58 dns_name_t name;
59 dns_name_t prefix;
60 bool sub;
61 char buf[sizeof("64000")];
62 unsigned short num;
63
64 REQUIRE(rdata->type == dns_rdatatype_lp);
65 REQUIRE(rdata->length != 0);
66
67 dns_name_init(&name, NULL);
68 dns_name_init(&prefix, NULL);
69
70 dns_rdata_toregion(rdata, ®ion);
71 num = uint16_fromregion(®ion);
72 isc_region_consume(®ion, 2);
73 snprintf(buf, sizeof(buf), "%u", num);
74 RETERR(str_totext(buf, target));
75
76 RETERR(str_totext(" ", target));
77
78 dns_name_fromregion(&name, ®ion);
79 sub = name_prefix(&name, tctx->origin, &prefix);
80 return (dns_name_totext(&prefix, sub, target));
81 }
82
83 static isc_result_t
fromwire_lp(ARGS_FROMWIRE)84 fromwire_lp(ARGS_FROMWIRE) {
85 dns_name_t name;
86 isc_region_t sregion;
87
88 REQUIRE(type == dns_rdatatype_lp);
89
90 UNUSED(type);
91 UNUSED(rdclass);
92
93 dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
94
95 dns_name_init(&name, NULL);
96
97 isc_buffer_activeregion(source, &sregion);
98 if (sregion.length < 2) {
99 return (ISC_R_UNEXPECTEDEND);
100 }
101 RETERR(mem_tobuffer(target, sregion.base, 2));
102 isc_buffer_forward(source, 2);
103 return (dns_name_fromwire(&name, source, dctx, options, target));
104 }
105
106 static isc_result_t
towire_lp(ARGS_TOWIRE)107 towire_lp(ARGS_TOWIRE) {
108 REQUIRE(rdata->type == dns_rdatatype_lp);
109 REQUIRE(rdata->length != 0);
110
111 UNUSED(cctx);
112
113 return (mem_tobuffer(target, rdata->data, rdata->length));
114 }
115
116 static int
compare_lp(ARGS_COMPARE)117 compare_lp(ARGS_COMPARE) {
118 isc_region_t region1;
119 isc_region_t region2;
120
121 REQUIRE(rdata1->type == rdata2->type);
122 REQUIRE(rdata1->rdclass == rdata2->rdclass);
123 REQUIRE(rdata1->type == dns_rdatatype_lp);
124 REQUIRE(rdata1->length != 0);
125 REQUIRE(rdata2->length != 0);
126
127 dns_rdata_toregion(rdata1, ®ion1);
128 dns_rdata_toregion(rdata2, ®ion2);
129
130 return (isc_region_compare(®ion1, ®ion2));
131 }
132
133 static isc_result_t
fromstruct_lp(ARGS_FROMSTRUCT)134 fromstruct_lp(ARGS_FROMSTRUCT) {
135 dns_rdata_lp_t *lp = source;
136 isc_region_t region;
137
138 REQUIRE(type == dns_rdatatype_lp);
139 REQUIRE(lp != NULL);
140 REQUIRE(lp->common.rdtype == type);
141 REQUIRE(lp->common.rdclass == rdclass);
142
143 UNUSED(type);
144 UNUSED(rdclass);
145
146 RETERR(uint16_tobuffer(lp->pref, target));
147 dns_name_toregion(&lp->lp, ®ion);
148 return (isc_buffer_copyregion(target, ®ion));
149 }
150
151 static isc_result_t
tostruct_lp(ARGS_TOSTRUCT)152 tostruct_lp(ARGS_TOSTRUCT) {
153 isc_region_t region;
154 dns_rdata_lp_t *lp = target;
155 dns_name_t name;
156
157 REQUIRE(rdata->type == dns_rdatatype_lp);
158 REQUIRE(lp != NULL);
159 REQUIRE(rdata->length != 0);
160
161 lp->common.rdclass = rdata->rdclass;
162 lp->common.rdtype = rdata->type;
163 ISC_LINK_INIT(&lp->common, link);
164
165 dns_name_init(&name, NULL);
166 dns_rdata_toregion(rdata, ®ion);
167 lp->pref = uint16_fromregion(®ion);
168 isc_region_consume(®ion, 2);
169 dns_name_fromregion(&name, ®ion);
170 dns_name_init(&lp->lp, NULL);
171 RETERR(name_duporclone(&name, mctx, &lp->lp));
172 lp->mctx = mctx;
173 return (ISC_R_SUCCESS);
174 }
175
176 static void
freestruct_lp(ARGS_FREESTRUCT)177 freestruct_lp(ARGS_FREESTRUCT) {
178 dns_rdata_lp_t *lp = source;
179
180 REQUIRE(lp != NULL);
181 REQUIRE(lp->common.rdtype == dns_rdatatype_lp);
182
183 if (lp->mctx == NULL) {
184 return;
185 }
186
187 dns_name_free(&lp->lp, lp->mctx);
188 lp->mctx = NULL;
189 }
190
191 static isc_result_t
additionaldata_lp(ARGS_ADDLDATA)192 additionaldata_lp(ARGS_ADDLDATA) {
193 dns_name_t name;
194 dns_offsets_t offsets;
195 isc_region_t region;
196 isc_result_t result;
197
198 REQUIRE(rdata->type == dns_rdatatype_lp);
199
200 dns_name_init(&name, offsets);
201 dns_rdata_toregion(rdata, ®ion);
202 isc_region_consume(®ion, 2);
203 dns_name_fromregion(&name, ®ion);
204
205 result = (add)(arg, &name, dns_rdatatype_l32);
206 if (result != ISC_R_SUCCESS) {
207 return (result);
208 }
209 return ((add)(arg, &name, dns_rdatatype_l64));
210 }
211
212 static isc_result_t
digest_lp(ARGS_DIGEST)213 digest_lp(ARGS_DIGEST) {
214 isc_region_t region;
215
216 REQUIRE(rdata->type == dns_rdatatype_lp);
217
218 dns_rdata_toregion(rdata, ®ion);
219 return ((digest)(arg, ®ion));
220 }
221
222 static bool
checkowner_lp(ARGS_CHECKOWNER)223 checkowner_lp(ARGS_CHECKOWNER) {
224 REQUIRE(type == dns_rdatatype_lp);
225
226 UNUSED(type);
227 UNUSED(rdclass);
228 UNUSED(name);
229 UNUSED(wildcard);
230
231 return (true);
232 }
233
234 static bool
checknames_lp(ARGS_CHECKNAMES)235 checknames_lp(ARGS_CHECKNAMES) {
236 REQUIRE(rdata->type == dns_rdatatype_lp);
237
238 UNUSED(bad);
239 UNUSED(owner);
240
241 return (true);
242 }
243
244 static int
casecompare_lp(ARGS_COMPARE)245 casecompare_lp(ARGS_COMPARE) {
246 dns_name_t name1;
247 dns_name_t name2;
248 isc_region_t region1;
249 isc_region_t region2;
250 int order;
251
252 REQUIRE(rdata1->type == rdata2->type);
253 REQUIRE(rdata1->rdclass == rdata2->rdclass);
254 REQUIRE(rdata1->type == dns_rdatatype_lp);
255 REQUIRE(rdata1->length != 0);
256 REQUIRE(rdata2->length != 0);
257
258 order = memcmp(rdata1->data, rdata2->data, 2);
259 if (order != 0) {
260 return (order < 0 ? -1 : 1);
261 }
262
263 dns_name_init(&name1, NULL);
264 dns_name_init(&name2, NULL);
265
266 dns_rdata_toregion(rdata1, ®ion1);
267 dns_rdata_toregion(rdata2, ®ion2);
268
269 isc_region_consume(®ion1, 2);
270 isc_region_consume(®ion2, 2);
271
272 dns_name_fromregion(&name1, ®ion1);
273 dns_name_fromregion(&name2, ®ion2);
274
275 return (dns_name_rdatacompare(&name1, &name2));
276 }
277
278 #endif /* RDATA_GENERIC_LP_107_C */
279