diff options
Diffstat (limited to 'fuzz/fuzz_mgmt.c')
-rw-r--r-- | fuzz/fuzz_mgmt.c | 529 |
1 files changed, 529 insertions, 0 deletions
diff --git a/fuzz/fuzz_mgmt.c b/fuzz/fuzz_mgmt.c new file mode 100644 index 0000000..741b375 --- /dev/null +++ b/fuzz/fuzz_mgmt.c | |||
@@ -0,0 +1,529 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2019 Yubico AB. All rights reserved. | ||
3 | * Use of this source code is governed by a BSD-style | ||
4 | * license that can be found in the LICENSE file. | ||
5 | */ | ||
6 | |||
7 | #include <assert.h> | ||
8 | #include <stdint.h> | ||
9 | #include <stdio.h> | ||
10 | #include <stdlib.h> | ||
11 | #include <string.h> | ||
12 | |||
13 | #include "mutator_aux.h" | ||
14 | #include "fido.h" | ||
15 | |||
16 | #include "../openbsd-compat/openbsd-compat.h" | ||
17 | |||
18 | #define TAG_PIN1 0x01 | ||
19 | #define TAG_PIN2 0x02 | ||
20 | #define TAG_RESET_WIRE_DATA 0x03 | ||
21 | #define TAG_INFO_WIRE_DATA 0x04 | ||
22 | #define TAG_SET_PIN_WIRE_DATA 0x05 | ||
23 | #define TAG_CHANGE_PIN_WIRE_DATA 0x06 | ||
24 | #define TAG_RETRY_WIRE_DATA 0x07 | ||
25 | #define TAG_SEED 0x08 | ||
26 | |||
27 | struct param { | ||
28 | char pin1[MAXSTR]; | ||
29 | char pin2[MAXSTR]; | ||
30 | struct blob reset_wire_data; | ||
31 | struct blob info_wire_data; | ||
32 | struct blob set_pin_wire_data; | ||
33 | struct blob change_pin_wire_data; | ||
34 | struct blob retry_wire_data; | ||
35 | int seed; | ||
36 | }; | ||
37 | |||
38 | /* Example parameters. */ | ||
39 | static const char dummy_pin1[] = "skepp cg0u3;Y.."; | ||
40 | static const char dummy_pin2[] = "bastilha 6rJrfQZI."; | ||
41 | |||
42 | static const uint8_t dummy_reset_wire_data[] = { | ||
43 | 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x91, | ||
44 | 0xef, 0xbe, 0x74, 0x39, 0x1a, 0x1c, 0x4a, 0x00, | ||
45 | 0x22, 0x00, 0x01, 0x02, 0x05, 0x02, 0x01, 0x05, | ||
46 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
47 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
48 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
49 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
50 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
51 | 0x00, 0x22, 0x00, 0x01, 0xbb, 0x00, 0x01, 0x02, | ||
52 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
53 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
54 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
55 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
56 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
57 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
58 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
59 | 0x00, 0x22, 0x00, 0x01, 0xbb, 0x00, 0x01, 0x02, | ||
60 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
61 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
62 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
63 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
64 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
65 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
66 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
67 | 0x00, 0x22, 0x00, 0x01, 0xbb, 0x00, 0x01, 0x02, | ||
68 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
69 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
70 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
71 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
72 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
73 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
74 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
75 | 0x00, 0x22, 0x00, 0x01, 0xbb, 0x00, 0x01, 0x02, | ||
76 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
77 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
78 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
79 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
80 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
81 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
82 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
83 | 0x00, 0x22, 0x00, 0x01, 0xbb, 0x00, 0x01, 0x02, | ||
84 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
85 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
86 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
87 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
88 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
89 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
90 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
91 | 0x00, 0x22, 0x00, 0x01, 0xbb, 0x00, 0x01, 0x01, | ||
92 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
93 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
94 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
95 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
96 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
97 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
98 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
99 | 0x00, 0x22, 0x00, 0x01, 0x90, 0x00, 0x01, 0x00, | ||
100 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
101 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
102 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
103 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
104 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
105 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
106 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | ||
107 | }; | ||
108 | |||
109 | static const uint8_t dummy_info_wire_data[] = { | ||
110 | 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x80, | ||
111 | 0x43, 0x56, 0x40, 0xb1, 0x4e, 0xd9, 0x2d, 0x00, | ||
112 | 0x22, 0x00, 0x02, 0x02, 0x05, 0x02, 0x01, 0x05, | ||
113 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
114 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
115 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
116 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
117 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
118 | 0x00, 0x22, 0x00, 0x02, 0x90, 0x00, 0xb9, 0x00, | ||
119 | 0xa9, 0x01, 0x83, 0x66, 0x55, 0x32, 0x46, 0x5f, | ||
120 | 0x56, 0x32, 0x68, 0x46, 0x49, 0x44, 0x4f, 0x5f, | ||
121 | 0x32, 0x5f, 0x30, 0x6c, 0x46, 0x49, 0x44, 0x4f, | ||
122 | 0x5f, 0x32, 0x5f, 0x31, 0x5f, 0x50, 0x52, 0x45, | ||
123 | 0x02, 0x82, 0x6b, 0x63, 0x72, 0x65, 0x64, 0x50, | ||
124 | 0x72, 0x6f, 0x74, 0x65, 0x63, 0x74, 0x6b, 0x68, | ||
125 | 0x6d, 0x61, 0x63, 0x2d, 0x73, 0x65, 0x63, 0x72, | ||
126 | 0x00, 0x22, 0x00, 0x02, 0x00, 0x65, 0x74, 0x03, | ||
127 | 0x50, 0x19, 0x56, 0xe5, 0xbd, 0xa3, 0x74, 0x45, | ||
128 | 0xf1, 0xa8, 0x14, 0x35, 0x64, 0x03, 0xfd, 0xbc, | ||
129 | 0x18, 0x04, 0xa5, 0x62, 0x72, 0x6b, 0xf5, 0x62, | ||
130 | 0x75, 0x70, 0xf5, 0x64, 0x70, 0x6c, 0x61, 0x74, | ||
131 | 0xf4, 0x69, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, | ||
132 | 0x50, 0x69, 0x6e, 0xf4, 0x75, 0x63, 0x72, 0x65, | ||
133 | 0x64, 0x65, 0x6e, 0x74, 0x69, 0x61, 0x6c, 0x4d, | ||
134 | 0x00, 0x22, 0x00, 0x02, 0x01, 0x67, 0x6d, 0x74, | ||
135 | 0x50, 0x72, 0x65, 0x76, 0x69, 0x65, 0x77, 0xf5, | ||
136 | 0x05, 0x19, 0x04, 0xb0, 0x06, 0x81, 0x01, 0x07, | ||
137 | 0x08, 0x08, 0x18, 0x80, 0x0a, 0x82, 0xa2, 0x63, | ||
138 | 0x61, 0x6c, 0x67, 0x26, 0x64, 0x74, 0x79, 0x70, | ||
139 | 0x65, 0x6a, 0x70, 0x75, 0x62, 0x6c, 0x69, 0x63, | ||
140 | 0x2d, 0x6b, 0x65, 0x79, 0xa2, 0x63, 0x61, 0x6c, | ||
141 | 0x67, 0x27, 0x64, 0x74, 0x79, 0x70, 0x65, 0x6a, | ||
142 | 0x00, 0x22, 0x00, 0x02, 0x02, 0x70, 0x75, 0x62, | ||
143 | 0x6c, 0x69, 0x63, 0x2d, 0x6b, 0x65, 0x79, 0x00, | ||
144 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
145 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
146 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
147 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
148 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
149 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | ||
150 | }; | ||
151 | |||
152 | static const uint8_t dummy_set_pin_wire_data[] = { | ||
153 | 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x59, | ||
154 | 0x50, 0x8c, 0x27, 0x14, 0x83, 0x43, 0xd5, 0x00, | ||
155 | 0x22, 0x00, 0x03, 0x02, 0x05, 0x02, 0x01, 0x05, | ||
156 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
157 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
158 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
159 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
160 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
161 | 0x00, 0x22, 0x00, 0x03, 0x90, 0x00, 0x51, 0x00, | ||
162 | 0xa1, 0x01, 0xa5, 0x01, 0x02, 0x03, 0x38, 0x18, | ||
163 | 0x20, 0x01, 0x21, 0x58, 0x20, 0x2a, 0xb8, 0x2d, | ||
164 | 0x36, 0x69, 0xab, 0x30, 0x9d, 0xe3, 0x5e, 0x9b, | ||
165 | 0xfb, 0x94, 0xfc, 0x1d, 0x92, 0x95, 0xaf, 0x01, | ||
166 | 0x47, 0xfe, 0x4b, 0x87, 0xe5, 0xcf, 0x3f, 0x05, | ||
167 | 0x0b, 0x39, 0xda, 0x17, 0x49, 0x22, 0x58, 0x20, | ||
168 | 0x15, 0x1b, 0xbe, 0x08, 0x78, 0x60, 0x4d, 0x3c, | ||
169 | 0x00, 0x22, 0x00, 0x03, 0x00, 0x3f, 0xf1, 0x60, | ||
170 | 0xa6, 0xd8, 0xf8, 0xed, 0xce, 0x4a, 0x30, 0x5d, | ||
171 | 0x1a, 0xaf, 0x80, 0xc4, 0x0a, 0xd2, 0x6f, 0x77, | ||
172 | 0x38, 0x12, 0x97, 0xaa, 0xbd, 0x00, 0x00, 0x00, | ||
173 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
174 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
175 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
176 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
177 | 0x00, 0x22, 0x00, 0x03, 0x90, 0x00, 0x01, 0x00, | ||
178 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
179 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
180 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
181 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
182 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
183 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
184 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | ||
185 | }; | ||
186 | |||
187 | static const uint8_t dummy_change_pin_wire_data[] = { | ||
188 | 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x48, | ||
189 | 0xfd, 0xf9, 0xde, 0x28, 0x21, 0x99, 0xd5, 0x00, | ||
190 | 0x22, 0x00, 0x04, 0x02, 0x05, 0x02, 0x01, 0x05, | ||
191 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
192 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
193 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
194 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
195 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
196 | 0x00, 0x22, 0x00, 0x04, 0x90, 0x00, 0x51, 0x00, | ||
197 | 0xa1, 0x01, 0xa5, 0x01, 0x02, 0x03, 0x38, 0x18, | ||
198 | 0x20, 0x01, 0x21, 0x58, 0x20, 0x2a, 0xb8, 0x2d, | ||
199 | 0x36, 0x69, 0xab, 0x30, 0x9d, 0xe3, 0x5e, 0x9b, | ||
200 | 0xfb, 0x94, 0xfc, 0x1d, 0x92, 0x95, 0xaf, 0x01, | ||
201 | 0x47, 0xfe, 0x4b, 0x87, 0xe5, 0xcf, 0x3f, 0x05, | ||
202 | 0x0b, 0x39, 0xda, 0x17, 0x49, 0x22, 0x58, 0x20, | ||
203 | 0x15, 0x1b, 0xbe, 0x08, 0x78, 0x60, 0x4d, 0x3c, | ||
204 | 0x00, 0x22, 0x00, 0x04, 0x00, 0x3f, 0xf1, 0x60, | ||
205 | 0xa6, 0xd8, 0xf8, 0xed, 0xce, 0x4a, 0x30, 0x5d, | ||
206 | 0x1a, 0xaf, 0x80, 0xc4, 0x0a, 0xd2, 0x6f, 0x77, | ||
207 | 0x38, 0x12, 0x97, 0xaa, 0xbd, 0x00, 0x00, 0x00, | ||
208 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
209 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
210 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
211 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
212 | 0x00, 0x22, 0x00, 0x04, 0x90, 0x00, 0x01, 0x00, | ||
213 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
214 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
215 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
216 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
217 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
218 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
219 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | ||
220 | }; | ||
221 | |||
222 | static const uint8_t dummy_retry_wire_data[] = { | ||
223 | 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x7f, | ||
224 | 0xaa, 0x73, 0x3e, 0x95, 0x98, 0xa8, 0x60, 0x00, | ||
225 | 0x22, 0x00, 0x05, 0x02, 0x05, 0x02, 0x01, 0x05, | ||
226 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
227 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
228 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
229 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
230 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
231 | 0x00, 0x22, 0x00, 0x05, 0x90, 0x00, 0x04, 0x00, | ||
232 | 0xa1, 0x03, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
233 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
234 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
235 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
236 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
237 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
238 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | ||
239 | }; | ||
240 | |||
241 | int LLVMFuzzerTestOneInput(const uint8_t *, size_t); | ||
242 | size_t LLVMFuzzerCustomMutator(uint8_t *, size_t, size_t, unsigned int); | ||
243 | |||
244 | static int | ||
245 | unpack(const uint8_t *ptr, size_t len, struct param *p) NO_MSAN | ||
246 | { | ||
247 | uint8_t **pp = (void *)&ptr; | ||
248 | |||
249 | if (unpack_string(TAG_PIN1, pp, &len, p->pin1) < 0 || | ||
250 | unpack_string(TAG_PIN2, pp, &len, p->pin2) < 0 || | ||
251 | unpack_blob(TAG_RESET_WIRE_DATA, pp, &len, &p->reset_wire_data) < 0 || | ||
252 | unpack_blob(TAG_INFO_WIRE_DATA, pp, &len, &p->info_wire_data) < 0 || | ||
253 | unpack_blob(TAG_SET_PIN_WIRE_DATA, pp, &len, &p->set_pin_wire_data) < 0 || | ||
254 | unpack_blob(TAG_CHANGE_PIN_WIRE_DATA, pp, &len, &p->change_pin_wire_data) < 0 || | ||
255 | unpack_blob(TAG_RETRY_WIRE_DATA, pp, &len, &p->retry_wire_data) < 0 || | ||
256 | unpack_int(TAG_SEED, pp, &len, &p->seed) < 0) | ||
257 | return (-1); | ||
258 | |||
259 | return (0); | ||
260 | } | ||
261 | |||
262 | static size_t | ||
263 | pack(uint8_t *ptr, size_t len, const struct param *p) | ||
264 | { | ||
265 | const size_t max = len; | ||
266 | |||
267 | if (pack_string(TAG_PIN1, &ptr, &len, p->pin1) < 0 || | ||
268 | pack_string(TAG_PIN2, &ptr, &len, p->pin2) < 0 || | ||
269 | pack_blob(TAG_RESET_WIRE_DATA, &ptr, &len, &p->reset_wire_data) < 0 || | ||
270 | pack_blob(TAG_INFO_WIRE_DATA, &ptr, &len, &p->info_wire_data) < 0 || | ||
271 | pack_blob(TAG_SET_PIN_WIRE_DATA, &ptr, &len, &p->set_pin_wire_data) < 0 || | ||
272 | pack_blob(TAG_CHANGE_PIN_WIRE_DATA, &ptr, &len, &p->change_pin_wire_data) < 0 || | ||
273 | pack_blob(TAG_RETRY_WIRE_DATA, &ptr, &len, &p->retry_wire_data) < 0 || | ||
274 | pack_int(TAG_SEED, &ptr, &len, p->seed) < 0) | ||
275 | return (0); | ||
276 | |||
277 | return (max - len); | ||
278 | } | ||
279 | |||
280 | static fido_dev_t * | ||
281 | prepare_dev() | ||
282 | { | ||
283 | fido_dev_t *dev; | ||
284 | fido_dev_io_t io; | ||
285 | |||
286 | io.open = dev_open; | ||
287 | io.close = dev_close; | ||
288 | io.read = dev_read; | ||
289 | io.write = dev_write; | ||
290 | |||
291 | if ((dev = fido_dev_new()) == NULL || fido_dev_set_io_functions(dev, | ||
292 | &io) != FIDO_OK || fido_dev_open(dev, "nodev") != FIDO_OK) { | ||
293 | fido_dev_free(&dev); | ||
294 | return (NULL); | ||
295 | } | ||
296 | |||
297 | return (dev); | ||
298 | } | ||
299 | |||
300 | static void | ||
301 | dev_reset(struct param *p) | ||
302 | { | ||
303 | fido_dev_t *dev; | ||
304 | |||
305 | set_wire_data(p->reset_wire_data.body, p->reset_wire_data.len); | ||
306 | |||
307 | if ((dev = prepare_dev()) == NULL) { | ||
308 | return; | ||
309 | } | ||
310 | |||
311 | fido_dev_reset(dev); | ||
312 | fido_dev_close(dev); | ||
313 | fido_dev_free(&dev); | ||
314 | } | ||
315 | |||
316 | static void | ||
317 | dev_get_cbor_info(struct param *p) | ||
318 | { | ||
319 | fido_dev_t *dev; | ||
320 | fido_cbor_info_t *ci; | ||
321 | uint64_t n; | ||
322 | uint8_t proto; | ||
323 | uint8_t major; | ||
324 | uint8_t minor; | ||
325 | uint8_t build; | ||
326 | uint8_t flags; | ||
327 | |||
328 | set_wire_data(p->info_wire_data.body, p->info_wire_data.len); | ||
329 | |||
330 | if ((dev = prepare_dev()) == NULL) { | ||
331 | return; | ||
332 | } | ||
333 | |||
334 | proto = fido_dev_protocol(dev); | ||
335 | major = fido_dev_major(dev); | ||
336 | minor = fido_dev_minor(dev); | ||
337 | build = fido_dev_build(dev); | ||
338 | flags = fido_dev_flags(dev); | ||
339 | |||
340 | consume(&proto, sizeof(proto)); | ||
341 | consume(&major, sizeof(major)); | ||
342 | consume(&minor, sizeof(minor)); | ||
343 | consume(&build, sizeof(build)); | ||
344 | consume(&flags, sizeof(flags)); | ||
345 | |||
346 | if ((ci = fido_cbor_info_new()) == NULL) { | ||
347 | fido_dev_close(dev); | ||
348 | fido_dev_free(&dev); | ||
349 | return; | ||
350 | } | ||
351 | |||
352 | fido_dev_get_cbor_info(dev, ci); | ||
353 | fido_dev_close(dev); | ||
354 | fido_dev_free(&dev); | ||
355 | |||
356 | for (size_t i = 0; i < fido_cbor_info_versions_len(ci); i++) { | ||
357 | char * const *sa = fido_cbor_info_versions_ptr(ci); | ||
358 | consume(sa[i], strlen(sa[i])); | ||
359 | } | ||
360 | for (size_t i = 0; i < fido_cbor_info_extensions_len(ci); i++) { | ||
361 | char * const *sa = fido_cbor_info_extensions_ptr(ci); | ||
362 | consume(sa[i], strlen(sa[i])); | ||
363 | } | ||
364 | |||
365 | for (size_t i = 0; i < fido_cbor_info_options_len(ci); i++) { | ||
366 | char * const *sa = fido_cbor_info_options_name_ptr(ci); | ||
367 | const bool *va = fido_cbor_info_options_value_ptr(ci); | ||
368 | consume(sa[i], strlen(sa[i])); | ||
369 | consume(&va[i], sizeof(va[i])); | ||
370 | } | ||
371 | |||
372 | n = fido_cbor_info_maxmsgsiz(ci); | ||
373 | consume(&n, sizeof(n)); | ||
374 | |||
375 | consume(fido_cbor_info_aaguid_ptr(ci), fido_cbor_info_aaguid_len(ci)); | ||
376 | consume(fido_cbor_info_protocols_ptr(ci), | ||
377 | fido_cbor_info_protocols_len(ci)); | ||
378 | |||
379 | fido_cbor_info_free(&ci); | ||
380 | } | ||
381 | |||
382 | static void | ||
383 | dev_set_pin(struct param *p) | ||
384 | { | ||
385 | fido_dev_t *dev; | ||
386 | |||
387 | set_wire_data(p->set_pin_wire_data.body, p->set_pin_wire_data.len); | ||
388 | |||
389 | if ((dev = prepare_dev()) == NULL) { | ||
390 | return; | ||
391 | } | ||
392 | |||
393 | fido_dev_set_pin(dev, p->pin1, NULL); | ||
394 | fido_dev_close(dev); | ||
395 | fido_dev_free(&dev); | ||
396 | } | ||
397 | |||
398 | static void | ||
399 | dev_change_pin(struct param *p) | ||
400 | { | ||
401 | fido_dev_t *dev; | ||
402 | |||
403 | set_wire_data(p->change_pin_wire_data.body, p->change_pin_wire_data.len); | ||
404 | |||
405 | if ((dev = prepare_dev()) == NULL) { | ||
406 | return; | ||
407 | } | ||
408 | |||
409 | fido_dev_set_pin(dev, p->pin2, p->pin1); | ||
410 | fido_dev_close(dev); | ||
411 | fido_dev_free(&dev); | ||
412 | } | ||
413 | |||
414 | static void | ||
415 | dev_get_retry_count(struct param *p) | ||
416 | { | ||
417 | fido_dev_t *dev; | ||
418 | int n; | ||
419 | |||
420 | set_wire_data(p->retry_wire_data.body, p->retry_wire_data.len); | ||
421 | |||
422 | if ((dev = prepare_dev()) == NULL) { | ||
423 | return; | ||
424 | } | ||
425 | |||
426 | fido_dev_get_retry_count(dev, &n); | ||
427 | consume(&n, sizeof(n)); | ||
428 | fido_dev_close(dev); | ||
429 | fido_dev_free(&dev); | ||
430 | } | ||
431 | |||
432 | int | ||
433 | LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) | ||
434 | { | ||
435 | struct param p; | ||
436 | |||
437 | memset(&p, 0, sizeof(p)); | ||
438 | |||
439 | if (unpack(data, size, &p) < 0) | ||
440 | return (0); | ||
441 | |||
442 | srandom((unsigned int)p.seed); | ||
443 | |||
444 | fido_init(0); | ||
445 | |||
446 | dev_reset(&p); | ||
447 | dev_get_cbor_info(&p); | ||
448 | dev_set_pin(&p); | ||
449 | dev_change_pin(&p); | ||
450 | dev_get_retry_count(&p); | ||
451 | |||
452 | return (0); | ||
453 | } | ||
454 | |||
455 | static size_t | ||
456 | pack_dummy(uint8_t *ptr, size_t len) | ||
457 | { | ||
458 | struct param dummy; | ||
459 | uint8_t blob[16384]; | ||
460 | size_t blob_len; | ||
461 | |||
462 | memset(&dummy, 0, sizeof(dummy)); | ||
463 | |||
464 | strlcpy(dummy.pin1, dummy_pin1, sizeof(dummy.pin1)); | ||
465 | strlcpy(dummy.pin2, dummy_pin2, sizeof(dummy.pin2)); | ||
466 | |||
467 | dummy.reset_wire_data.len = sizeof(dummy_reset_wire_data); | ||
468 | dummy.info_wire_data.len = sizeof(dummy_info_wire_data); | ||
469 | dummy.set_pin_wire_data.len = sizeof(dummy_set_pin_wire_data); | ||
470 | dummy.change_pin_wire_data.len = sizeof(dummy_change_pin_wire_data); | ||
471 | dummy.retry_wire_data.len = sizeof(dummy_retry_wire_data); | ||
472 | |||
473 | memcpy(&dummy.reset_wire_data.body, &dummy_reset_wire_data, | ||
474 | dummy.reset_wire_data.len); | ||
475 | memcpy(&dummy.info_wire_data.body, &dummy_info_wire_data, | ||
476 | dummy.info_wire_data.len); | ||
477 | memcpy(&dummy.set_pin_wire_data.body, &dummy_set_pin_wire_data, | ||
478 | dummy.set_pin_wire_data.len); | ||
479 | memcpy(&dummy.change_pin_wire_data.body, &dummy_change_pin_wire_data, | ||
480 | dummy.change_pin_wire_data.len); | ||
481 | memcpy(&dummy.retry_wire_data.body, &dummy_retry_wire_data, | ||
482 | dummy.retry_wire_data.len); | ||
483 | |||
484 | blob_len = pack(blob, sizeof(blob), &dummy); | ||
485 | assert(blob_len != 0); | ||
486 | |||
487 | if (blob_len > len) { | ||
488 | memcpy(ptr, blob, len); | ||
489 | return (len); | ||
490 | } | ||
491 | |||
492 | memcpy(ptr, blob, blob_len); | ||
493 | |||
494 | return (blob_len); | ||
495 | } | ||
496 | |||
497 | size_t | ||
498 | LLVMFuzzerCustomMutator(uint8_t *data, size_t size, size_t maxsize, | ||
499 | unsigned int seed) | ||
500 | { | ||
501 | struct param p; | ||
502 | uint8_t blob[16384]; | ||
503 | size_t blob_len; | ||
504 | |||
505 | memset(&p, 0, sizeof(p)); | ||
506 | |||
507 | if (unpack(data, size, &p) < 0) | ||
508 | return (pack_dummy(data, maxsize)); | ||
509 | |||
510 | p.seed = (int)seed; | ||
511 | |||
512 | mutate_string(p.pin1); | ||
513 | mutate_string(p.pin2); | ||
514 | |||
515 | mutate_blob(&p.reset_wire_data); | ||
516 | mutate_blob(&p.info_wire_data); | ||
517 | mutate_blob(&p.set_pin_wire_data); | ||
518 | mutate_blob(&p.change_pin_wire_data); | ||
519 | mutate_blob(&p.retry_wire_data); | ||
520 | |||
521 | blob_len = pack(blob, sizeof(blob), &p); | ||
522 | |||
523 | if (blob_len == 0 || blob_len > maxsize) | ||
524 | return (0); | ||
525 | |||
526 | memcpy(data, blob, blob_len); | ||
527 | |||
528 | return (blob_len); | ||
529 | } | ||