1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef GENERIC_CAA_257_C
#define GENERIC_CAA_257_C 1
static unsigned char const alphanumeric[256] = {
/* 0x00-0x0f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x10-0x1f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x20-0x2f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x30-0x3f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
/* 0x40-0x4f */ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* 0x50-0x5f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
/* 0x60-0x6f */ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* 0x70-0x7f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
/* 0x80-0x8f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x90-0x9f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0xa0-0xaf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0xb0-0xbf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0xc0-0xcf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0xd0-0xdf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0xe0-0xef */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 0xf0-0xff */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
static inline isc_result_t
totext_caa(ARGS_TOTEXT) {
isc_region_t region;
uint8_t flags;
char buf[256];
UNUSED(tctx);
REQUIRE(rdata->type == dns_rdatatype_caa);
REQUIRE(rdata->length >= 3U);
REQUIRE(rdata->data != NULL);
dns_rdata_toregion(rdata, ®ion);
/*
* Flags
*/
flags = uint8_consume_fromregion(®ion);
snprintf(buf, sizeof(buf), "%u ", flags);
RETERR(isc_str_tobuffer(buf, target));
/*
* Tag
*/
RETERR(txt_totext(®ion, 0, target));
RETERR(isc_str_tobuffer(" ", target));
/*
* Value
*/
RETERR(multitxt_totext(®ion, target));
return (ISC_R_SUCCESS);
}
static inline isc_result_t
fromwire_caa(ARGS_FROMWIRE) {
isc_region_t sr;
unsigned int len, i;
REQUIRE(type == dns_rdatatype_caa);
UNUSED(type);
UNUSED(rdclass);
UNUSED(dctx);
UNUSED(options);
/*
* Flags
*/
isc_buffer_activeregion(source, &sr);
if (sr.length < 2)
return (ISC_R_UNEXPECTEDEND);
/*
* Flags, tag length
*/
RETERR(isc_mem_tobuffer(target, sr.base, 2));
len = sr.base[1];
isc_region_consume(&sr, 2);
isc_buffer_forward(source, 2);
/*
* Zero length tag fields are illegal.
*/
if (sr.length < len || len == 0)
return (DNS_R_FORMERR);
/* Check the Tag's value */
for (i = 0; i < len; i++)
if (!alphanumeric[sr.base[i]])
return (DNS_R_FORMERR);
/*
* Tag + Value
*/
isc_buffer_forward(source, sr.length);
return (isc_mem_tobuffer(target, sr.base, sr.length));
}
static inline isc_result_t
towire_caa(ARGS_TOWIRE) {
isc_region_t region;
REQUIRE(rdata->type == dns_rdatatype_caa);
REQUIRE(rdata->length >= 3U);
REQUIRE(rdata->data != NULL);
UNUSED(cctx);
dns_rdata_toregion(rdata, ®ion);
return (isc_mem_tobuffer(target, region.base, region.length));
}
#endif /* GENERIC_CAA_257_C */
|
