Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2011 The Chromium OS Authors. All rights reserved. |
| 2 | * Use of this source code is governed by a BSD-style license that can be |
| 3 | * found in the LICENSE file. |
| 4 | * |
| 5 | * Tests for tpm_bootmode functions |
| 6 | */ |
| 7 | |
Bill Richardson | 0c3ba24 | 2013-03-29 11:09:30 -0700 | [diff] [blame] | 8 | #include <stdint.h> |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 9 | #include <stdio.h> |
| 10 | #include <stdlib.h> |
| 11 | #include <string.h> |
| 12 | |
| 13 | #define _STUB_IMPLEMENTATION_ /* So we can use memset() ourselves */ |
| 14 | |
| 15 | #include "test_common.h" |
| 16 | #include "utility.h" |
| 17 | #include "tpm_bootmode.h" |
| 18 | |
| 19 | extern const char* kBootStateSHA1Digests[]; |
| 20 | |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 21 | /* Last in_digest passed to TlclExtend() for each PCR */ |
| 22 | static const uint8_t *last_in[20]; |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 23 | |
| 24 | /* Return value to pass for TlclExtend() */ |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 25 | static uint32_t extend_returns; |
| 26 | |
| 27 | /* How many calls to TlclExtend() should one SetTPMBootModeState() make? */ |
| 28 | static int expected_extend_count; |
| 29 | /* How many did we get? */ |
| 30 | static int actual_extend_count; |
| 31 | |
| 32 | static GoogleBinaryBlockHeader gbb_v1 = { |
| 33 | .major_version = GBB_MAJOR_VER, |
| 34 | .minor_version = 1, |
| 35 | }; |
| 36 | |
| 37 | static GoogleBinaryBlockHeader gbb_v2 = { |
| 38 | .major_version = GBB_MAJOR_VER, |
| 39 | .minor_version = 2, |
| 40 | .hwid_digest = {1, 2, 3, 4,}, |
| 41 | }; |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 42 | |
| 43 | /* Mocked TlclExtend() function for testing */ |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 44 | uint32_t TlclExtend(int pcr_num, const uint8_t *in_digest, |
| 45 | uint8_t *out_digest) |
| 46 | { |
| 47 | /* Should be using correct pcr */ |
| 48 | TEST_EQ(pcr_num, actual_extend_count, "TlclExtend pcr_num"); |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 49 | |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 50 | last_in[actual_extend_count] = in_digest; |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 51 | |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 52 | actual_extend_count++; |
| 53 | return extend_returns; |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 54 | } |
| 55 | |
| 56 | |
| 57 | /* Test setting TPM boot mode state */ |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 58 | static void BootStateTest(void) |
| 59 | { |
| 60 | int recdev; |
| 61 | int flags; |
| 62 | int index; |
| 63 | char what[128]; |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 64 | |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 65 | /* Test all permutations of developer and recovery mode */ |
| 66 | for (recdev = 0; recdev < 4; recdev++) { |
| 67 | /* Exhaustively test all permutations of key block flags |
| 68 | * currently defined in vboot_struct.h (KEY_BLOCK_FLAG_*) */ |
| 69 | for (flags = 0; flags < 16; flags++) { |
| 70 | index = recdev * 3; |
| 71 | if (6 == flags) |
| 72 | index += 2; |
| 73 | else if (7 == flags) |
| 74 | index += 1; |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 75 | |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 76 | /* Passing a null pointer for GBB */ |
| 77 | memset(last_in, 0, sizeof(last_in)); |
| 78 | actual_extend_count = 0; |
| 79 | expected_extend_count = 1; |
| 80 | TEST_EQ(SetTPMBootModeState(recdev & 2, recdev & 1, |
| 81 | flags, 0), 0, |
| 82 | "SetTPMBootModeState return (gbb0)"); |
| 83 | snprintf(what, sizeof(what), |
| 84 | "SetTPMBootModeState %d, 0x%x (gbb0)", |
| 85 | recdev, flags); |
| 86 | TEST_PTR_EQ(last_in[0], |
| 87 | kBootStateSHA1Digests[index], what); |
| 88 | TEST_EQ(expected_extend_count, actual_extend_count, |
| 89 | "Expected TlclExtend call count (gbb0)"); |
| 90 | snprintf(what, sizeof(what), |
| 91 | "SetTPMBootModeState %d, 0x%x (gbb0) PCR1", |
| 92 | recdev, flags); |
| 93 | TEST_PTR_EQ(last_in[1], NULL, what); |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 94 | |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 95 | /* GBB v1.1 - should be exactly the same */ |
| 96 | memset(last_in, 0, sizeof(last_in)); |
| 97 | actual_extend_count = 0; |
| 98 | expected_extend_count = 1; |
| 99 | TEST_EQ(SetTPMBootModeState(recdev & 2, recdev & 1, |
| 100 | flags, &gbb_v1), 0, |
| 101 | "SetTPMBootModeState return (gbb1)"); |
| 102 | snprintf(what, sizeof(what), |
| 103 | "SetTPMBootModeState %d, 0x%x (gbb1)", |
| 104 | recdev, flags); |
| 105 | TEST_PTR_EQ(last_in[0], |
| 106 | kBootStateSHA1Digests[index], what); |
| 107 | TEST_EQ(expected_extend_count, actual_extend_count, |
| 108 | "Expected TlclExtend call count (gbb1)"); |
| 109 | snprintf(what, sizeof(what), |
| 110 | "SetTPMBootModeState %d, 0x%x (gbb1) PCR1", |
| 111 | recdev, flags); |
| 112 | TEST_PTR_EQ(last_in[1], NULL, what); |
| 113 | |
| 114 | /* GBB v1.2 - should extend PCR1 with HWID digest */ |
| 115 | memset(last_in, 0, sizeof(last_in)); |
| 116 | actual_extend_count = 0; |
| 117 | expected_extend_count = 2; |
| 118 | TEST_EQ(SetTPMBootModeState(recdev & 2, recdev & 1, |
| 119 | flags, &gbb_v2), 0, |
| 120 | "SetTPMBootModeState return (gbb2)"); |
| 121 | snprintf(what, sizeof(what), |
| 122 | "SetTPMBootModeState %d, 0x%x (gbb2)", |
| 123 | recdev, flags); |
| 124 | TEST_PTR_EQ(last_in[0], |
| 125 | kBootStateSHA1Digests[index], what); |
| 126 | TEST_EQ(expected_extend_count, actual_extend_count, |
| 127 | "Expected TlclExtend call count (gbb2)"); |
| 128 | snprintf(what, sizeof(what), |
| 129 | "SetTPMBootModeState %d, 0x%x (gbb2) PCR1", |
| 130 | recdev, flags); |
| 131 | TEST_PTR_EQ(last_in[1], gbb_v2.hwid_digest, what); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | extend_returns = 1; |
| 136 | actual_extend_count = 0; |
| 137 | expected_extend_count = 1; |
| 138 | TEST_EQ(SetTPMBootModeState(0, 0, 0, 0), 1, |
| 139 | "SetTPMBootModeState error"); |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 140 | } |
| 141 | |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 142 | int main(int argc, char *argv[]) |
| 143 | { |
| 144 | int error_code = 0; |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 145 | |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 146 | BootStateTest(); |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 147 | |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 148 | if (!gTestSuccess) |
| 149 | error_code = 255; |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 150 | |
Bill Richardson | f4f395e | 2014-10-22 17:42:20 -0700 | [diff] [blame] | 151 | return error_code; |
Randall Spangler | aeb8632 | 2011-08-24 18:35:19 -0700 | [diff] [blame] | 152 | } |