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
|
/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Tests for checking kernel rollback-prevention logic.
*/
#include <stdio.h>
#include <stdlib.h>
#include "cryptolib.h"
#include "file_keys.h"
#include "kernel_image.h"
#include "rollback_index.h"
#include "test_common.h"
#include "utility.h"
const char* kFirmwareKeyPublicFile = "testkeys/key_rsa1024.keyb";
/* Tests that check for correctness of the VerifyFirmwareDriver_f() logic
* and rollback prevention. */
void VerifyKernelDriverTest(void) {
uint64_t len;
uint8_t* firmware_key_pub = BufferFromFile(kFirmwareKeyPublicFile, &len);
/* TODO(gauravsh): Rebase this to use LoadKernel() (maybe by making
* it a part of load_kernel_test.c */
#if 0
/* Initialize kernel blobs, including their associated parition
* table attributed. */
kernel_entry valid_kernelA = {
GenerateRollbackTestKernelBlob(1, 1, 0),
15, /* Highest Priority. */
5, /* Enough for tests. */
0 /* Assume we haven't boot off it yet. */
};
kernel_entry corrupt_kernelA = {
GenerateRollbackTestKernelBlob(1, 1, 1),
15, /* Highest Priority. */
5, /* Enough for tests. */
0 /* Assume we haven't boot off it yet. */
};
kernel_entry valid_kernelB = {
GenerateRollbackTestKernelBlob(1, 1, 0),
1, /* Lower Priority. */
5, /* Enough for tests. */
0 /* Assume we haven't boot off it yet. */
};
kernel_entry corrupt_kernelB = {
GenerateRollbackTestKernelBlob(1, 1, 1),
1, /* Lower Priority. */
5, /* Enough for tests. */
0 /* Assume we haven't boot off it yet. */
};
/* Initialize rollback index state. */
g_kernel_key_version = 1;
g_kernel_version = 1;
/* Note: This test just checks the rollback prevention mechanism and not
* the full blown kernel boot logic. Updates to the kernel attributes
* in the paritition table are not tested.
*/
VBDEBUG(("Kernel A boot priority(15) > Kernel B boot priority(1)\n"));
TEST_EQ(VerifyKernelDriver_f(firmware_key_pub,
&valid_kernelA, &valid_kernelB,
DEV_MODE_DISABLED),
BOOT_KERNEL_A_CONTINUE,
"(Valid Kernel A (current version)\n"
" Valid Kernel B (current version) runs A):");
TEST_EQ(VerifyKernelDriver_f(firmware_key_pub,
&corrupt_kernelA, &valid_kernelB,
DEV_MODE_DISABLED),
BOOT_KERNEL_B_CONTINUE,
"(Corrupt Kernel A (current version)\n"
" Valid Kernel B (current version) runs B):");
TEST_EQ(VerifyKernelDriver_f(firmware_key_pub,
&valid_kernelA, &corrupt_kernelB,
DEV_MODE_DISABLED),
BOOT_KERNEL_A_CONTINUE,
"(Valid Kernel A (current version)\n"
" Corrupt Kernel B (current version) runs A):");
TEST_EQ(VerifyKernelDriver_f(firmware_key_pub,
&corrupt_kernelA, &corrupt_kernelB,
DEV_MODE_DISABLED),
BOOT_KERNEL_RECOVERY_CONTINUE,
"(Corrupt Kernel A (current version)\n"
" Corrupt Kernel B (current version) runs Recovery):");
VBDEBUG(("\nSwapping boot priorities...\n"
"Kernel B boot priority(15) > Kernel A boot priority(1)\n"));
valid_kernelA.boot_priority = corrupt_kernelA.boot_priority = 1;
valid_kernelB.boot_priority = corrupt_kernelB.boot_priority = 15;
TEST_EQ(VerifyKernelDriver_f(firmware_key_pub,
&valid_kernelA, &valid_kernelB,
DEV_MODE_DISABLED),
BOOT_KERNEL_B_CONTINUE,
"(Valid Kernel A (current version)\n"
" Valid Kernel B (current version) runs B):");
TEST_EQ(VerifyKernelDriver_f(firmware_key_pub,
&corrupt_kernelA, &valid_kernelB,
DEV_MODE_DISABLED),
BOOT_KERNEL_B_CONTINUE,
"(Corrupt Kernel A (current version)\n"
" Valid Kernel B (current version) runs B):");
TEST_EQ(VerifyKernelDriver_f(firmware_key_pub,
&valid_kernelA, &corrupt_kernelB,
DEV_MODE_DISABLED),
BOOT_KERNEL_A_CONTINUE,
"(Valid Kernel A (current version)\n"
" Corrupt Kernel B (current version) runs A):");
TEST_EQ(VerifyKernelDriver_f(firmware_key_pub,
&corrupt_kernelA, &corrupt_kernelB,
DEV_MODE_DISABLED),
BOOT_KERNEL_RECOVERY_CONTINUE,
"(Corrupt Kernel A (current version)\n"
" Corrupt Kernel B (current version) runs Recovery):");
VBDEBUG(("\nUpdating stored version information. Obsoleting "
"exiting kernel images.\n"));
g_kernel_key_version = 2;
g_kernel_version = 2;
TEST_EQ(VerifyKernelDriver_f(firmware_key_pub,
&valid_kernelA, &valid_kernelB,
DEV_MODE_DISABLED),
BOOT_KERNEL_RECOVERY_CONTINUE,
"(Valid Kernel A (old version)\n"
" Valid Kernel B (old version) runs Recovery):");
VBDEBUG(("\nGenerating updated Kernel A blob with "
"new version.\n"));
Free(valid_kernelA.kernel_blob);
valid_kernelA.kernel_blob = GenerateRollbackTestKernelBlob(3, 3, 0);
TEST_EQ(VerifyKernelDriver_f(firmware_key_pub,
&valid_kernelA, &valid_kernelB,
DEV_MODE_DISABLED),
BOOT_KERNEL_A_CONTINUE,
"(Valid Kernel A (new version)\n"
" Valid Kernel B (old version) runs A):");
Free(valid_kernelA.kernel_blob);
Free(valid_kernelB.kernel_blob);
Free(corrupt_kernelA.kernel_blob);
Free(corrupt_kernelB.kernel_blob);
#endif
Free(firmware_key_pub);
}
int main(int argc, char* argv[]) {
int error_code = 0;
VerifyKernelDriverTest();
if (!gTestSuccess)
error_code = 255;
return error_code;
}
|
