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 /* $Id: dhcid_49.c,v 1.12 2020/02/26 18:47:59 florian Exp $ */
18
19 /* RFC 4701 */
20
21 #ifndef RDATA_IN_1_DHCID_49_C
22 #define RDATA_IN_1_DHCID_49_C 1
23
24 static inline isc_result_t
totext_in_dhcid(ARGS_TOTEXT)25 totext_in_dhcid(ARGS_TOTEXT) {
26 isc_region_t sr, sr2;
27 char buf[sizeof(" ; 64000 255 64000")];
28 size_t n;
29
30 REQUIRE(rdata->type == dns_rdatatype_dhcid);
31 REQUIRE(rdata->rdclass == dns_rdataclass_in);
32 REQUIRE(rdata->length != 0);
33
34 dns_rdata_toregion(rdata, &sr);
35 sr2 = sr;
36
37 if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
38 RETERR(isc_str_tobuffer("( " /*)*/, target));
39 if (tctx->width == 0) /* No splitting */
40 RETERR(isc_base64_totext(&sr, 60, "", target));
41 else
42 RETERR(isc_base64_totext(&sr, tctx->width - 2,
43 tctx->linebreak, target));
44 if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) {
45 RETERR(isc_str_tobuffer(/* ( */ " )", target));
46 if (rdata->length > 2) {
47 n = snprintf(buf, sizeof(buf), " ; %u %u %u",
48 sr2.base[0] * 256U + sr2.base[1],
49 sr2.base[2], rdata->length - 3U);
50 INSIST(n < sizeof(buf));
51 RETERR(isc_str_tobuffer(buf, target));
52 }
53 }
54 return (ISC_R_SUCCESS);
55 }
56
57 static inline isc_result_t
fromwire_in_dhcid(ARGS_FROMWIRE)58 fromwire_in_dhcid(ARGS_FROMWIRE) {
59 isc_region_t sr;
60
61 REQUIRE(type == dns_rdatatype_dhcid);
62 REQUIRE(rdclass == dns_rdataclass_in);
63
64 UNUSED(type);
65 UNUSED(rdclass);
66 UNUSED(dctx);
67 UNUSED(options);
68
69 isc_buffer_activeregion(source, &sr);
70 if (sr.length == 0)
71 return (ISC_R_UNEXPECTEDEND);
72
73 isc_buffer_forward(source, sr.length);
74 return (isc_mem_tobuffer(target, sr.base, sr.length));
75 }
76
77 static inline isc_result_t
towire_in_dhcid(ARGS_TOWIRE)78 towire_in_dhcid(ARGS_TOWIRE) {
79 isc_region_t sr;
80
81 REQUIRE(rdata->type == dns_rdatatype_dhcid);
82 REQUIRE(rdata->rdclass == dns_rdataclass_in);
83 REQUIRE(rdata->length != 0);
84
85 UNUSED(cctx);
86
87 dns_rdata_toregion(rdata, &sr);
88 return (isc_mem_tobuffer(target, sr.base, sr.length));
89 }
90
91 #endif /* RDATA_IN_1_DHCID_49_C */
92