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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/*
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2017 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#ifdef HAVE_LINUX_CRYPTOUSER_H
# include "netlink.h"
# include "nlattr.h"
# include "print_fields.h"
# include <linux/cryptouser.h>
# include "xlat/crypto_nl_attrs.h"
static bool
decode_crypto_report_generic(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
tprints("{type=");
printstr_ex(tcp, addr, len, QUOTE_0_TERMINATED);
tprints("}");
return true;
}
static bool
decode_crypto_report_hash(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
# ifdef HAVE_STRUCT_CRYPTO_REPORT_HASH
struct crypto_report_hash rhash;
if (len < sizeof(rhash))
printstrn(tcp, addr, len);
else if (!umove_or_printaddr(tcp, addr, &rhash)) {
PRINT_FIELD_CSTRING("{", rhash, type);
PRINT_FIELD_U(", ", rhash, blocksize);
PRINT_FIELD_U(", ", rhash, digestsize);
tprints("}");
}
# else
printstrn(tcp, addr, len);
# endif
return true;
}
static bool
decode_crypto_report_blkcipher(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
# ifdef HAVE_STRUCT_CRYPTO_REPORT_BLKCIPHER
struct crypto_report_blkcipher rblkcipher;
if (len < sizeof(rblkcipher))
printstrn(tcp, addr, len);
else if (!umove_or_printaddr(tcp, addr, &rblkcipher)) {
PRINT_FIELD_CSTRING("{", rblkcipher, type);
PRINT_FIELD_CSTRING(", ", rblkcipher, geniv);
PRINT_FIELD_U(", ", rblkcipher, blocksize);
PRINT_FIELD_U(", ", rblkcipher, min_keysize);
PRINT_FIELD_U(", ", rblkcipher, max_keysize);
PRINT_FIELD_U(", ", rblkcipher, ivsize);
tprints("}");
}
# else
printstrn(tcp, addr, len);
# endif
return true;
}
static bool
decode_crypto_report_aead(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
# ifdef HAVE_STRUCT_CRYPTO_REPORT_AEAD
struct crypto_report_aead raead;
if (len < sizeof(raead))
printstrn(tcp, addr, len);
else if (!umove_or_printaddr(tcp, addr, &raead)) {
PRINT_FIELD_CSTRING("{", raead, type);
PRINT_FIELD_CSTRING(", ", raead, geniv);
PRINT_FIELD_U(", ", raead, blocksize);
PRINT_FIELD_U(", ", raead, maxauthsize);
PRINT_FIELD_U(", ", raead, ivsize);
tprints("}");
}
# else
printstrn(tcp, addr, len);
# endif
return true;
}
static bool
decode_crypto_report_rng(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
# ifdef HAVE_STRUCT_CRYPTO_REPORT_RNG
struct crypto_report_rng rrng;
if (len < sizeof(rrng))
printstrn(tcp, addr, len);
else if (!umove_or_printaddr(tcp, addr, &rrng)) {
PRINT_FIELD_CSTRING("{", rrng, type);
PRINT_FIELD_U(", ", rrng, seedsize);
tprints("}");
}
# else
printstrn(tcp, addr, len);
# endif
return true;
}
static bool
decode_crypto_report_cipher(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
# ifdef HAVE_STRUCT_CRYPTO_REPORT_CIPHER
struct crypto_report_cipher rcipher;
if (len < sizeof(rcipher))
printstrn(tcp, addr, len);
else if (!umove_or_printaddr(tcp, addr, &rcipher)) {
PRINT_FIELD_CSTRING("{", rcipher, type);
PRINT_FIELD_U(", ", rcipher, blocksize);
PRINT_FIELD_U(", ", rcipher, min_keysize);
PRINT_FIELD_U(", ", rcipher, max_keysize);
tprints("}");
}
# else
printstrn(tcp, addr, len);
# endif
return true;
}
static const nla_decoder_t crypto_user_alg_nla_decoders[] = {
[CRYPTOCFGA_PRIORITY_VAL] = decode_nla_u32,
[CRYPTOCFGA_REPORT_LARVAL] = decode_crypto_report_generic,
[CRYPTOCFGA_REPORT_HASH] = decode_crypto_report_hash,
[CRYPTOCFGA_REPORT_BLKCIPHER] = decode_crypto_report_blkcipher,
[CRYPTOCFGA_REPORT_AEAD] = decode_crypto_report_aead,
[CRYPTOCFGA_REPORT_COMPRESS] = decode_crypto_report_generic,
[CRYPTOCFGA_REPORT_RNG] = decode_crypto_report_rng,
[CRYPTOCFGA_REPORT_CIPHER] = decode_crypto_report_cipher,
[CRYPTOCFGA_REPORT_AKCIPHER] = decode_crypto_report_generic,
[CRYPTOCFGA_REPORT_KPP] = decode_crypto_report_generic,
[CRYPTOCFGA_REPORT_ACOMP] = decode_crypto_report_generic
};
static void
decode_crypto_user_alg(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len)
{
struct crypto_user_alg alg;
if (len < sizeof(alg))
printstrn(tcp, addr, len);
else if (!umove_or_printaddr(tcp, addr, &alg)) {
PRINT_FIELD_CSTRING("{", alg, cru_name);
PRINT_FIELD_CSTRING(", ", alg, cru_driver_name);
PRINT_FIELD_CSTRING(", ", alg, cru_module_name);
PRINT_FIELD_X(", ", alg, cru_type);
PRINT_FIELD_X(", ", alg, cru_mask);
PRINT_FIELD_U(", ", alg, cru_refcnt);
PRINT_FIELD_X(", ", alg, cru_flags);
tprints("}");
const size_t offset = NLMSG_ALIGN(sizeof(alg));
if (len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
crypto_nl_attrs, "CRYPTOCFGA_???",
crypto_user_alg_nla_decoders,
ARRAY_SIZE(crypto_user_alg_nla_decoders),
NULL);
}
}
}
bool
decode_netlink_crypto(struct tcb *const tcp,
const struct nlmsghdr *const nlmsghdr,
const kernel_ulong_t addr,
const unsigned int len)
{
switch (nlmsghdr->nlmsg_type) {
case CRYPTO_MSG_NEWALG:
case CRYPTO_MSG_DELALG:
case CRYPTO_MSG_UPDATEALG:
case CRYPTO_MSG_GETALG:
decode_crypto_user_alg(tcp, addr, len);
break;
default:
return false;
}
return true;
}
#endif /* HAVE_LINUX_CRYPTOUSER_H */
|
