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/* 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 <stdint.h>
#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;
}
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