txt_16.c revision 1.2 
1/*
2 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
9 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
10 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
11 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
12 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
13 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
14 * PERFORMANCE OF THIS SOFTWARE.
15 */
16
17/* Reviewed: Thu Mar 16 15:40:00 PST 2000 by bwelling */
18
19#ifndef RDATA_GENERIC_TXT_16_C
20#define RDATA_GENERIC_TXT_16_C
21
22#define RRTYPE_TXT_ATTRIBUTES (0)
23
24static inline isc_result_t
25generic_fromtext_txt(ARGS_FROMTEXT) {
26	isc_token_t token;
27	int strings;
28
29	UNUSED(type);
30	UNUSED(rdclass);
31	UNUSED(origin);
32	UNUSED(options);
33	UNUSED(callbacks);
34
35	strings = 0;
36	if ((options & DNS_RDATA_UNKNOWNESCAPE) != 0) {
37		isc_textregion_t r;
38		DE_CONST("#", r.base);
39		r.length = 1;
40		RETERR(txt_fromtext(&r, target));
41		strings++;
42	}
43	for (;;) {
44		RETERR(isc_lex_getmastertoken(lexer, &token,
45					      isc_tokentype_qstring,
46					      ISC_TRUE));
47		if (token.type != isc_tokentype_qstring &&
48		    token.type != isc_tokentype_string)
49			break;
50		RETTOK(txt_fromtext(&token.value.as_textregion, target));
51		strings++;
52	}
53	/* Let upper layer handle eol/eof. */
54	isc_lex_ungettoken(lexer, &token);
55	return (strings == 0 ? ISC_R_UNEXPECTEDEND : ISC_R_SUCCESS);
56}
57
58static inline isc_result_t
59generic_totext_txt(ARGS_TOTEXT) {
60	isc_region_t region;
61
62	UNUSED(tctx);
63
64	dns_rdata_toregion(rdata, &region);
65
66	while (region.length > 0) {
67		RETERR(txt_totext(&region, ISC_TRUE, target));
68		if (region.length > 0)
69			RETERR(str_totext(" ", target));
70	}
71
72	return (ISC_R_SUCCESS);
73}
74
75static inline isc_result_t
76generic_fromwire_txt(ARGS_FROMWIRE) {
77	isc_result_t result;
78
79	UNUSED(type);
80	UNUSED(dctx);
81	UNUSED(rdclass);
82	UNUSED(options);
83
84	do {
85		result = txt_fromwire(source, target);
86		if (result != ISC_R_SUCCESS)
87			return (result);
88	} while (!buffer_empty(source));
89	return (ISC_R_SUCCESS);
90}
91
92static inline isc_result_t
93fromtext_txt(ARGS_FROMTEXT) {
94
95	REQUIRE(type == dns_rdatatype_txt);
96
97	return (generic_fromtext_txt(rdclass, type, lexer, origin, options,
98				     target, callbacks));
99}
100
101static inline isc_result_t
102totext_txt(ARGS_TOTEXT) {
103
104	REQUIRE(rdata->type == dns_rdatatype_txt);
105
106	return (generic_totext_txt(rdata, tctx, target));
107}
108
109static inline isc_result_t
110fromwire_txt(ARGS_FROMWIRE) {
111
112	REQUIRE(type == dns_rdatatype_txt);
113
114	return (generic_fromwire_txt(rdclass, type, source, dctx, options,
115				     target));
116}
117
118static inline isc_result_t
119towire_txt(ARGS_TOWIRE) {
120
121	REQUIRE(rdata->type == dns_rdatatype_txt);
122
123	UNUSED(cctx);
124
125	return (mem_tobuffer(target, rdata->data, rdata->length));
126}
127
128static inline int
129compare_txt(ARGS_COMPARE) {
130	isc_region_t r1;
131	isc_region_t r2;
132
133	REQUIRE(rdata1->type == rdata2->type);
134	REQUIRE(rdata1->rdclass == rdata2->rdclass);
135	REQUIRE(rdata1->type == dns_rdatatype_txt);
136
137	dns_rdata_toregion(rdata1, &r1);
138	dns_rdata_toregion(rdata2, &r2);
139	return (isc_region_compare(&r1, &r2));
140}
141
142static inline isc_result_t
143generic_fromstruct_txt(ARGS_FROMSTRUCT) {
144	dns_rdata_txt_t *txt = source;
145	isc_region_t region;
146	uint8_t length;
147
148	REQUIRE(source != NULL);
149	REQUIRE(txt->common.rdtype == type);
150	REQUIRE(txt->common.rdclass == rdclass);
151	REQUIRE(txt->txt != NULL && txt->txt_len != 0);
152
153	UNUSED(type);
154	UNUSED(rdclass);
155
156	region.base = txt->txt;
157	region.length = txt->txt_len;
158	while (region.length > 0) {
159		length = uint8_fromregion(&region);
160		isc_region_consume(&region, 1);
161		if (region.length < length)
162			return (ISC_R_UNEXPECTEDEND);
163		isc_region_consume(&region, length);
164	}
165
166	return (mem_tobuffer(target, txt->txt, txt->txt_len));
167}
168
169static inline isc_result_t
170generic_tostruct_txt(ARGS_TOSTRUCT) {
171	dns_rdata_txt_t *txt = target;
172	isc_region_t r;
173
174	REQUIRE(target != NULL);
175	REQUIRE(txt->common.rdclass == rdata->rdclass);
176	REQUIRE(txt->common.rdtype == rdata->type);
177	REQUIRE(!ISC_LINK_LINKED(&txt->common, link));
178
179	dns_rdata_toregion(rdata, &r);
180	txt->txt_len = r.length;
181	txt->txt = mem_maybedup(r.base, r.length);
182	if (txt->txt == NULL)
183		return (ISC_R_NOMEMORY);
184
185	txt->offset = 0;
186	return (ISC_R_SUCCESS);
187}
188
189static inline void
190generic_freestruct_txt(ARGS_FREESTRUCT) {
191	dns_rdata_txt_t *txt = source;
192
193	REQUIRE(source != NULL);
194
195	if (txt->txt != NULL)
196		free(txt->txt);
197}
198
199static inline isc_result_t
200fromstruct_txt(ARGS_FROMSTRUCT) {
201
202	REQUIRE(type == dns_rdatatype_txt);
203
204	return (generic_fromstruct_txt(rdclass, type, source, target));
205}
206
207static inline isc_result_t
208tostruct_txt(ARGS_TOSTRUCT) {
209	dns_rdata_txt_t *txt = target;
210
211	REQUIRE(rdata->type == dns_rdatatype_txt);
212	REQUIRE(target != NULL);
213
214	txt->common.rdclass = rdata->rdclass;
215	txt->common.rdtype = rdata->type;
216	ISC_LINK_INIT(&txt->common, link);
217
218	return (generic_tostruct_txt(rdata, target));
219}
220
221static inline void
222freestruct_txt(ARGS_FREESTRUCT) {
223	dns_rdata_txt_t *txt = source;
224
225	REQUIRE(source != NULL);
226	REQUIRE(txt->common.rdtype == dns_rdatatype_txt);
227
228	generic_freestruct_txt(source);
229}
230
231static inline isc_result_t
232additionaldata_txt(ARGS_ADDLDATA) {
233	REQUIRE(rdata->type == dns_rdatatype_txt);
234
235	UNUSED(rdata);
236	UNUSED(add);
237	UNUSED(arg);
238
239	return (ISC_R_SUCCESS);
240}
241
242static inline isc_result_t
243digest_txt(ARGS_DIGEST) {
244	isc_region_t r;
245
246	REQUIRE(rdata->type == dns_rdatatype_txt);
247
248	dns_rdata_toregion(rdata, &r);
249
250	return ((digest)(arg, &r));
251}
252
253static inline isc_boolean_t
254checkowner_txt(ARGS_CHECKOWNER) {
255
256	REQUIRE(type == dns_rdatatype_txt);
257
258	UNUSED(name);
259	UNUSED(type);
260	UNUSED(rdclass);
261	UNUSED(wildcard);
262
263	return (ISC_TRUE);
264}
265
266static inline isc_boolean_t
267checknames_txt(ARGS_CHECKNAMES) {
268
269	REQUIRE(rdata->type == dns_rdatatype_txt);
270
271	UNUSED(rdata);
272	UNUSED(owner);
273	UNUSED(bad);
274
275	return (ISC_TRUE);
276}
277
278static inline int
279casecompare_txt(ARGS_COMPARE) {
280	return (compare_txt(rdata1, rdata2));
281}
282
283#endif	/* RDATA_GENERIC_TXT_16_C */
284