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
|
/*
* Copyright 2016-2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* https://www.openssl.org/source/license.html
* or in the file LICENSE in the source distribution.
*/
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/bio.h>
#include "fuzzer.h"
#include "internal/quic_lcidm.h"
#include "internal/packet.h"
int FuzzerInitialize(int *argc, char ***argv)
{
FuzzerSetRand();
OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS | OPENSSL_INIT_ASYNC, NULL);
OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
ERR_clear_error();
return 1;
}
/*
* Fuzzer input "protocol":
* Big endian
* u8(LCID length)
* Zero or more of:
* ENROL_ODCID u0(0x00) u64(opaque) u8(cidl):cid
* RETIRE_ODCID u8(0x01) u64(opaque)
* GENERATE_INITIAL u8(0x02) u64(opaque)
* GENERATE u8(0x03) u64(opaque)
* RETIRE u8(0x04) u64(opaque) u64(retire_prior_to)
* CULL u8(0x05) u64(opaque)
* LOOKUP u8(0x06) u8(cidl):cid
*/
enum {
CMD_ENROL_ODCID,
CMD_RETIRE_ODCID,
CMD_GENERATE_INITIAL,
CMD_GENERATE,
CMD_RETIRE,
CMD_CULL,
CMD_LOOKUP
};
static int get_cid(PACKET *pkt, QUIC_CONN_ID *cid)
{
unsigned int cidl;
if (!PACKET_get_1(pkt, &cidl)
|| cidl > QUIC_MAX_CONN_ID_LEN
|| !PACKET_copy_bytes(pkt, cid->id, cidl))
return 0;
cid->id_len = (unsigned char)cidl;
return 1;
}
int FuzzerTestOneInput(const uint8_t *buf, size_t len)
{
int rc = 0;
QUIC_LCIDM *lcidm = NULL;
PACKET pkt;
uint64_t arg_opaque, arg_retire_prior_to, seq_num_out;
unsigned int cmd, lcidl;
QUIC_CONN_ID arg_cid, cid_out;
OSSL_QUIC_FRAME_NEW_CONN_ID ncid_frame;
int did_retire;
void *opaque_out;
if (!PACKET_buf_init(&pkt, buf, len))
goto err;
if (!PACKET_get_1(&pkt, &lcidl)
|| lcidl > QUIC_MAX_CONN_ID_LEN) {
rc = -1;
goto err;
}
if ((lcidm = ossl_quic_lcidm_new(NULL, lcidl)) == NULL) {
rc = -1;
goto err;
}
while (PACKET_remaining(&pkt) > 0) {
if (!PACKET_get_1(&pkt, &cmd))
goto err;
switch (cmd) {
case CMD_ENROL_ODCID:
if (!PACKET_get_net_8(&pkt, &arg_opaque)
|| !get_cid(&pkt, &arg_cid)) {
rc = -1;
goto err;
}
ossl_quic_lcidm_enrol_odcid(lcidm, (void *)(uintptr_t)arg_opaque,
&arg_cid);
break;
case CMD_RETIRE_ODCID:
if (!PACKET_get_net_8(&pkt, &arg_opaque)) {
rc = -1;
goto err;
}
ossl_quic_lcidm_retire_odcid(lcidm, (void *)(uintptr_t)arg_opaque);
break;
case CMD_GENERATE_INITIAL:
if (!PACKET_get_net_8(&pkt, &arg_opaque)) {
rc = -1;
goto err;
}
ossl_quic_lcidm_generate_initial(lcidm, (void *)(uintptr_t)arg_opaque,
&cid_out);
break;
case CMD_GENERATE:
if (!PACKET_get_net_8(&pkt, &arg_opaque)) {
rc = -1;
goto err;
}
ossl_quic_lcidm_generate(lcidm, (void *)(uintptr_t)arg_opaque,
&ncid_frame);
break;
case CMD_RETIRE:
if (!PACKET_get_net_8(&pkt, &arg_opaque)
|| !PACKET_get_net_8(&pkt, &arg_retire_prior_to)) {
rc = -1;
goto err;
}
ossl_quic_lcidm_retire(lcidm, (void *)(uintptr_t)arg_opaque,
arg_retire_prior_to,
NULL, &cid_out,
&seq_num_out, &did_retire);
break;
case CMD_CULL:
if (!PACKET_get_net_8(&pkt, &arg_opaque)) {
rc = -1;
goto err;
}
ossl_quic_lcidm_cull(lcidm, (void *)(uintptr_t)arg_opaque);
break;
case CMD_LOOKUP:
if (!get_cid(&pkt, &arg_cid)) {
rc = -1;
goto err;
}
ossl_quic_lcidm_lookup(lcidm, &arg_cid, &seq_num_out, &opaque_out);
break;
default:
rc = -1;
goto err;
}
}
err:
ossl_quic_lcidm_free(lcidm);
return rc;
}
void FuzzerCleanup(void)
{
FuzzerClearRand();
}
|
