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: ipseckey_45.c,v 1.14 2020/09/14 08:40:43 florian Exp $ */
18
19 #ifndef RDATA_GENERIC_IPSECKEY_45_C
20 #define RDATA_GENERIC_IPSECKEY_45_C
21
22 #include <string.h>
23
24 static inline isc_result_t
totext_ipseckey(ARGS_TOTEXT)25 totext_ipseckey(ARGS_TOTEXT) {
26 isc_region_t region;
27 dns_name_t name;
28 char buf[sizeof("255 ")];
29 unsigned short num;
30 unsigned short gateway;
31
32 REQUIRE(rdata->type == dns_rdatatype_ipseckey);
33 REQUIRE(rdata->length >= 3);
34
35 dns_name_init(&name, NULL);
36
37 if (rdata->data[1] > 3U)
38 return (ISC_R_NOTIMPLEMENTED);
39
40 if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
41 RETERR(isc_str_tobuffer("( ", target));
42
43 /*
44 * Precedence.
45 */
46 dns_rdata_toregion(rdata, ®ion);
47 num = uint8_fromregion(®ion);
48 isc_region_consume(®ion, 1);
49 snprintf(buf, sizeof(buf), "%u ", num);
50 RETERR(isc_str_tobuffer(buf, target));
51
52 /*
53 * Gateway type.
54 */
55 gateway = uint8_fromregion(®ion);
56 isc_region_consume(®ion, 1);
57 snprintf(buf, sizeof(buf), "%u ", gateway);
58 RETERR(isc_str_tobuffer(buf, target));
59
60 /*
61 * Algorithm.
62 */
63 num = uint8_fromregion(®ion);
64 isc_region_consume(®ion, 1);
65 snprintf(buf, sizeof(buf), "%u ", num);
66 RETERR(isc_str_tobuffer(buf, target));
67
68 /*
69 * Gateway.
70 */
71 switch (gateway) {
72 case 0:
73 RETERR(isc_str_tobuffer(".", target));
74 break;
75
76 case 1:
77 RETERR(inet_totext(AF_INET, ®ion, target));
78 isc_region_consume(®ion, 4);
79 break;
80
81 case 2:
82 RETERR(inet_totext(AF_INET6, ®ion, target));
83 isc_region_consume(®ion, 16);
84 break;
85
86 case 3:
87 dns_name_fromregion(&name, ®ion);
88 RETERR(dns_name_totext(&name, 0, target));
89 isc_region_consume(®ion, name_length(&name));
90 break;
91 }
92
93 /*
94 * Key.
95 */
96 if (region.length > 0U) {
97 RETERR(isc_str_tobuffer(tctx->linebreak, target));
98 if (tctx->width == 0) /* No splitting */
99 RETERR(isc_base64_totext(®ion, 60, "", target));
100 else
101 RETERR(isc_base64_totext(®ion, tctx->width - 2,
102 tctx->linebreak, target));
103 }
104
105 if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
106 RETERR(isc_str_tobuffer(" )", target));
107 return (ISC_R_SUCCESS);
108 }
109
110 static inline isc_result_t
fromwire_ipseckey(ARGS_FROMWIRE)111 fromwire_ipseckey(ARGS_FROMWIRE) {
112 dns_name_t name;
113 isc_region_t region;
114
115 REQUIRE(type == dns_rdatatype_ipseckey);
116
117 UNUSED(type);
118 UNUSED(rdclass);
119
120 dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
121
122 dns_name_init(&name, NULL);
123
124 isc_buffer_activeregion(source, ®ion);
125 if (region.length < 3)
126 return (ISC_R_UNEXPECTEDEND);
127
128 switch (region.base[1]) {
129 case 0:
130 isc_buffer_forward(source, region.length);
131 return (isc_mem_tobuffer(target, region.base, region.length));
132
133 case 1:
134 if (region.length < 7)
135 return (ISC_R_UNEXPECTEDEND);
136 isc_buffer_forward(source, region.length);
137 return (isc_mem_tobuffer(target, region.base, region.length));
138
139 case 2:
140 if (region.length < 19)
141 return (ISC_R_UNEXPECTEDEND);
142 isc_buffer_forward(source, region.length);
143 return (isc_mem_tobuffer(target, region.base, region.length));
144
145 case 3:
146 RETERR(isc_mem_tobuffer(target, region.base, 3));
147 isc_buffer_forward(source, 3);
148 RETERR(dns_name_fromwire(&name, source, dctx, options, target));
149 isc_buffer_activeregion(source, ®ion);
150 isc_buffer_forward(source, region.length);
151 return(isc_mem_tobuffer(target, region.base, region.length));
152
153 default:
154 return (ISC_R_NOTIMPLEMENTED);
155 }
156 }
157
158 static inline isc_result_t
towire_ipseckey(ARGS_TOWIRE)159 towire_ipseckey(ARGS_TOWIRE) {
160 isc_region_t region;
161
162 REQUIRE(rdata->type == dns_rdatatype_ipseckey);
163 REQUIRE(rdata->length != 0);
164
165 UNUSED(cctx);
166
167 dns_rdata_toregion(rdata, ®ion);
168 return (isc_mem_tobuffer(target, region.base, region.length));
169 }
170
171 #endif /* RDATA_GENERIC_IPSECKEY_45_C */
172