Import bind 9.5.2 vendor sources.
[dragonfly.git] / contrib / bind-9.5.2 / lib / dns / rdata / in_1 / srv_33.c
1 /*
2  * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
3  * Copyright (C) 1999-2001, 2003  Internet Software Consortium.
4  *
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.
8  *
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.
16  */
17
18 /* $Id: srv_33.c,v 1.45 2007/06/19 23:47:17 tbox Exp $ */
19
20 /* Reviewed: Fri Mar 17 13:01:00 PST 2000 by bwelling */
21
22 /* RFC2782 */
23
24 #ifndef RDATA_IN_1_SRV_33_C
25 #define RDATA_IN_1_SRV_33_C
26
27 #define RRTYPE_SRV_ATTRIBUTES (0)
28
29 static inline isc_result_t
30 fromtext_in_srv(ARGS_FROMTEXT) {
31         isc_token_t token;
32         dns_name_t name;
33         isc_buffer_t buffer;
34         isc_boolean_t ok;
35
36         REQUIRE(type == 33);
37         REQUIRE(rdclass == 1);
38
39         UNUSED(type);
40         UNUSED(rdclass);
41         UNUSED(callbacks);
42
43         /*
44          * Priority.
45          */
46         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
47                                       ISC_FALSE));
48         if (token.value.as_ulong > 0xffffU)
49                 RETTOK(ISC_R_RANGE);
50         RETERR(uint16_tobuffer(token.value.as_ulong, target));
51
52         /*
53          * Weight.
54          */
55         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
56                                       ISC_FALSE));
57         if (token.value.as_ulong > 0xffffU)
58                 RETTOK(ISC_R_RANGE);
59         RETERR(uint16_tobuffer(token.value.as_ulong, target));
60
61         /*
62          * Port.
63          */
64         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
65                                       ISC_FALSE));
66         if (token.value.as_ulong > 0xffffU)
67                 RETTOK(ISC_R_RANGE);
68         RETERR(uint16_tobuffer(token.value.as_ulong, target));
69
70         /*
71          * Target.
72          */
73         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
74                                       ISC_FALSE));
75         dns_name_init(&name, NULL);
76         buffer_fromregion(&buffer, &token.value.as_region);
77         origin = (origin != NULL) ? origin : dns_rootname;
78         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
79         ok = ISC_TRUE;
80         if ((options & DNS_RDATA_CHECKNAMES) != 0)
81                 ok = dns_name_ishostname(&name, ISC_FALSE);
82         if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
83                 RETTOK(DNS_R_BADNAME);
84         if (!ok && callbacks != NULL)
85                 warn_badname(&name, lexer, callbacks);
86         return (ISC_R_SUCCESS);
87 }
88
89 static inline isc_result_t
90 totext_in_srv(ARGS_TOTEXT) {
91         isc_region_t region;
92         dns_name_t name;
93         dns_name_t prefix;
94         isc_boolean_t sub;
95         char buf[sizeof("64000")];
96         unsigned short num;
97
98         REQUIRE(rdata->type == 33);
99         REQUIRE(rdata->rdclass == 1);
100         REQUIRE(rdata->length != 0);
101
102         dns_name_init(&name, NULL);
103         dns_name_init(&prefix, NULL);
104
105         /*
106          * Priority.
107          */
108         dns_rdata_toregion(rdata, &region);
109         num = uint16_fromregion(&region);
110         isc_region_consume(&region, 2);
111         sprintf(buf, "%u", num);
112         RETERR(str_totext(buf, target));
113         RETERR(str_totext(" ", target));
114
115         /*
116          * Weight.
117          */
118         num = uint16_fromregion(&region);
119         isc_region_consume(&region, 2);
120         sprintf(buf, "%u", num);
121         RETERR(str_totext(buf, target));
122         RETERR(str_totext(" ", target));
123
124         /*
125          * Port.
126          */
127         num = uint16_fromregion(&region);
128         isc_region_consume(&region, 2);
129         sprintf(buf, "%u", num);
130         RETERR(str_totext(buf, target));
131         RETERR(str_totext(" ", target));
132
133         /*
134          * Target.
135          */
136         dns_name_fromregion(&name, &region);
137         sub = name_prefix(&name, tctx->origin, &prefix);
138         return (dns_name_totext(&prefix, sub, target));
139 }
140
141 static inline isc_result_t
142 fromwire_in_srv(ARGS_FROMWIRE) {
143         dns_name_t name;
144         isc_region_t sr;
145
146         REQUIRE(type == 33);
147         REQUIRE(rdclass == 1);
148
149         UNUSED(type);
150         UNUSED(rdclass);
151
152         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
153
154         dns_name_init(&name, NULL);
155
156         /*
157          * Priority, weight, port.
158          */
159         isc_buffer_activeregion(source, &sr);
160         if (sr.length < 6)
161                 return (ISC_R_UNEXPECTEDEND);
162         RETERR(mem_tobuffer(target, sr.base, 6));
163         isc_buffer_forward(source, 6);
164
165         /*
166          * Target.
167          */
168         return (dns_name_fromwire(&name, source, dctx, options, target));
169 }
170
171 static inline isc_result_t
172 towire_in_srv(ARGS_TOWIRE) {
173         dns_name_t name;
174         dns_offsets_t offsets;
175         isc_region_t sr;
176
177         REQUIRE(rdata->type == 33);
178         REQUIRE(rdata->length != 0);
179
180         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
181         /*
182          * Priority, weight, port.
183          */
184         dns_rdata_toregion(rdata, &sr);
185         RETERR(mem_tobuffer(target, sr.base, 6));
186         isc_region_consume(&sr, 6);
187
188         /*
189          * Target.
190          */
191         dns_name_init(&name, offsets);
192         dns_name_fromregion(&name, &sr);
193         return (dns_name_towire(&name, cctx, target));
194 }
195
196 static inline int
197 compare_in_srv(ARGS_COMPARE) {
198         dns_name_t name1;
199         dns_name_t name2;
200         isc_region_t region1;
201         isc_region_t region2;
202         int order;
203
204         REQUIRE(rdata1->type == rdata2->type);
205         REQUIRE(rdata1->rdclass == rdata2->rdclass);
206         REQUIRE(rdata1->type == 33);
207         REQUIRE(rdata1->rdclass == 1);
208         REQUIRE(rdata1->length != 0);
209         REQUIRE(rdata2->length != 0);
210
211         /*
212          * Priority, weight, port.
213          */
214         order = memcmp(rdata1->data, rdata2->data, 6);
215         if (order != 0)
216                 return (order < 0 ? -1 : 1);
217
218         /*
219          * Target.
220          */
221         dns_name_init(&name1, NULL);
222         dns_name_init(&name2, NULL);
223
224         dns_rdata_toregion(rdata1, &region1);
225         dns_rdata_toregion(rdata2, &region2);
226
227         isc_region_consume(&region1, 6);
228         isc_region_consume(&region2, 6);
229
230         dns_name_fromregion(&name1, &region1);
231         dns_name_fromregion(&name2, &region2);
232
233         return (dns_name_rdatacompare(&name1, &name2));
234 }
235
236 static inline isc_result_t
237 fromstruct_in_srv(ARGS_FROMSTRUCT) {
238         dns_rdata_in_srv_t *srv = source;
239         isc_region_t region;
240
241         REQUIRE(type == 33);
242         REQUIRE(rdclass == 1);
243         REQUIRE(source != NULL);
244         REQUIRE(srv->common.rdtype == type);
245         REQUIRE(srv->common.rdclass == rdclass);
246
247         UNUSED(type);
248         UNUSED(rdclass);
249
250         RETERR(uint16_tobuffer(srv->priority, target));
251         RETERR(uint16_tobuffer(srv->weight, target));
252         RETERR(uint16_tobuffer(srv->port, target));
253         dns_name_toregion(&srv->target, &region);
254         return (isc_buffer_copyregion(target, &region));
255 }
256
257 static inline isc_result_t
258 tostruct_in_srv(ARGS_TOSTRUCT) {
259         isc_region_t region;
260         dns_rdata_in_srv_t *srv = target;
261         dns_name_t name;
262
263         REQUIRE(rdata->rdclass == 1);
264         REQUIRE(rdata->type == 33);
265         REQUIRE(target != NULL);
266         REQUIRE(rdata->length != 0);
267
268         srv->common.rdclass = rdata->rdclass;
269         srv->common.rdtype = rdata->type;
270         ISC_LINK_INIT(&srv->common, link);
271
272         dns_name_init(&name, NULL);
273         dns_rdata_toregion(rdata, &region);
274         srv->priority = uint16_fromregion(&region);
275         isc_region_consume(&region, 2);
276         srv->weight = uint16_fromregion(&region);
277         isc_region_consume(&region, 2);
278         srv->port = uint16_fromregion(&region);
279         isc_region_consume(&region, 2);
280         dns_name_fromregion(&name, &region);
281         dns_name_init(&srv->target, NULL);
282         RETERR(name_duporclone(&name, mctx, &srv->target));
283         srv->mctx = mctx;
284         return (ISC_R_SUCCESS);
285 }
286
287 static inline void
288 freestruct_in_srv(ARGS_FREESTRUCT) {
289         dns_rdata_in_srv_t *srv = source;
290
291         REQUIRE(source != NULL);
292         REQUIRE(srv->common.rdclass == 1);
293         REQUIRE(srv->common.rdtype == 33);
294
295         if (srv->mctx == NULL)
296                 return;
297
298         dns_name_free(&srv->target, srv->mctx);
299         srv->mctx = NULL;
300 }
301
302 static inline isc_result_t
303 additionaldata_in_srv(ARGS_ADDLDATA) {
304         dns_name_t name;
305         dns_offsets_t offsets;
306         isc_region_t region;
307
308         REQUIRE(rdata->type == 33);
309         REQUIRE(rdata->rdclass == 1);
310
311         dns_name_init(&name, offsets);
312         dns_rdata_toregion(rdata, &region);
313         isc_region_consume(&region, 6);
314         dns_name_fromregion(&name, &region);
315
316         return ((add)(arg, &name, dns_rdatatype_a));
317 }
318
319 static inline isc_result_t
320 digest_in_srv(ARGS_DIGEST) {
321         isc_region_t r1, r2;
322         dns_name_t name;
323
324         REQUIRE(rdata->type == 33);
325         REQUIRE(rdata->rdclass == 1);
326
327         dns_rdata_toregion(rdata, &r1);
328         r2 = r1;
329         isc_region_consume(&r2, 6);
330         r1.length = 6;
331         RETERR((digest)(arg, &r1));
332         dns_name_init(&name, NULL);
333         dns_name_fromregion(&name, &r2);
334         return (dns_name_digest(&name, digest, arg));
335 }
336
337 static inline isc_boolean_t
338 checkowner_in_srv(ARGS_CHECKOWNER) {
339
340         REQUIRE(type == 33);
341         REQUIRE(rdclass == 1);
342
343         UNUSED(name);
344         UNUSED(type);
345         UNUSED(rdclass);
346         UNUSED(wildcard);
347
348         return (ISC_TRUE);
349 }
350
351 static inline isc_boolean_t
352 checknames_in_srv(ARGS_CHECKNAMES) {
353         isc_region_t region;
354         dns_name_t name;
355
356         REQUIRE(rdata->type == 33);
357         REQUIRE(rdata->rdclass == 1);
358
359         UNUSED(owner);
360
361         dns_rdata_toregion(rdata, &region);
362         isc_region_consume(&region, 6);
363         dns_name_init(&name, NULL);
364         dns_name_fromregion(&name, &region);
365         if (!dns_name_ishostname(&name, ISC_FALSE)) {
366                 if (bad != NULL)
367                         dns_name_clone(&name, bad);
368                 return (ISC_FALSE);
369         }
370         return (ISC_TRUE);
371 }
372
373 #endif  /* RDATA_IN_1_SRV_33_C */