| /* Copyright (c) 2011 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 tpm_bootmode functions |
| */ |
| |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #define _STUB_IMPLEMENTATION_ /* So we can use memset() ourselves */ |
| |
| #include "test_common.h" |
| #include "utility.h" |
| #include "tpm_bootmode.h" |
| |
| extern const char* kBootStateSHA1Digests[]; |
| |
| /* Last in_digest passed to TlclExtend() for each PCR */ |
| static const uint8_t *last_in[20]; |
| |
| /* Return value to pass for TlclExtend() */ |
| static uint32_t extend_returns; |
| |
| /* How many calls to TlclExtend() should one SetTPMBootModeState() make? */ |
| static int expected_extend_count; |
| /* How many did we get? */ |
| static int actual_extend_count; |
| |
| static GoogleBinaryBlockHeader gbb_v1 = { |
| .major_version = GBB_MAJOR_VER, |
| .minor_version = 1, |
| }; |
| |
| static GoogleBinaryBlockHeader gbb_v2 = { |
| .major_version = GBB_MAJOR_VER, |
| .minor_version = 2, |
| .hwid_digest = {1, 2, 3, 4,}, |
| }; |
| |
| /* Mocked TlclExtend() function for testing */ |
| uint32_t TlclExtend(int pcr_num, const uint8_t *in_digest, |
| uint8_t *out_digest) |
| { |
| /* Should be using correct pcr */ |
| TEST_EQ(pcr_num, actual_extend_count, "TlclExtend pcr_num"); |
| |
| last_in[actual_extend_count] = in_digest; |
| |
| actual_extend_count++; |
| return extend_returns; |
| } |
| |
| |
| /* Test setting TPM boot mode state */ |
| static void BootStateTest(void) |
| { |
| int recdev; |
| int flags; |
| int index; |
| char what[128]; |
| |
| /* Test all permutations of developer and recovery mode */ |
| for (recdev = 0; recdev < 4; recdev++) { |
| /* Exhaustively test all permutations of key block flags |
| * currently defined in vboot_struct.h (KEY_BLOCK_FLAG_*) */ |
| for (flags = 0; flags < 16; flags++) { |
| index = recdev * 3; |
| if (6 == flags) |
| index += 2; |
| else if (7 == flags) |
| index += 1; |
| |
| /* Passing a null pointer for GBB */ |
| memset(last_in, 0, sizeof(last_in)); |
| actual_extend_count = 0; |
| expected_extend_count = 1; |
| TEST_EQ(SetTPMBootModeState(recdev & 2, recdev & 1, |
| flags, 0), 0, |
| "SetTPMBootModeState return (gbb0)"); |
| snprintf(what, sizeof(what), |
| "SetTPMBootModeState %d, 0x%x (gbb0)", |
| recdev, flags); |
| TEST_PTR_EQ(last_in[0], |
| kBootStateSHA1Digests[index], what); |
| TEST_EQ(expected_extend_count, actual_extend_count, |
| "Expected TlclExtend call count (gbb0)"); |
| snprintf(what, sizeof(what), |
| "SetTPMBootModeState %d, 0x%x (gbb0) PCR1", |
| recdev, flags); |
| TEST_PTR_EQ(last_in[1], NULL, what); |
| |
| /* GBB v1.1 - should be exactly the same */ |
| memset(last_in, 0, sizeof(last_in)); |
| actual_extend_count = 0; |
| expected_extend_count = 1; |
| TEST_EQ(SetTPMBootModeState(recdev & 2, recdev & 1, |
| flags, &gbb_v1), 0, |
| "SetTPMBootModeState return (gbb1)"); |
| snprintf(what, sizeof(what), |
| "SetTPMBootModeState %d, 0x%x (gbb1)", |
| recdev, flags); |
| TEST_PTR_EQ(last_in[0], |
| kBootStateSHA1Digests[index], what); |
| TEST_EQ(expected_extend_count, actual_extend_count, |
| "Expected TlclExtend call count (gbb1)"); |
| snprintf(what, sizeof(what), |
| "SetTPMBootModeState %d, 0x%x (gbb1) PCR1", |
| recdev, flags); |
| TEST_PTR_EQ(last_in[1], NULL, what); |
| |
| /* GBB v1.2 - should extend PCR1 with HWID digest */ |
| memset(last_in, 0, sizeof(last_in)); |
| actual_extend_count = 0; |
| expected_extend_count = 2; |
| TEST_EQ(SetTPMBootModeState(recdev & 2, recdev & 1, |
| flags, &gbb_v2), 0, |
| "SetTPMBootModeState return (gbb2)"); |
| snprintf(what, sizeof(what), |
| "SetTPMBootModeState %d, 0x%x (gbb2)", |
| recdev, flags); |
| TEST_PTR_EQ(last_in[0], |
| kBootStateSHA1Digests[index], what); |
| TEST_EQ(expected_extend_count, actual_extend_count, |
| "Expected TlclExtend call count (gbb2)"); |
| snprintf(what, sizeof(what), |
| "SetTPMBootModeState %d, 0x%x (gbb2) PCR1", |
| recdev, flags); |
| TEST_PTR_EQ(last_in[1], gbb_v2.hwid_digest, what); |
| } |
| } |
| |
| extend_returns = 1; |
| actual_extend_count = 0; |
| expected_extend_count = 1; |
| TEST_EQ(SetTPMBootModeState(0, 0, 0, 0), 1, |
| "SetTPMBootModeState error"); |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int error_code = 0; |
| |
| BootStateTest(); |
| |
| if (!gTestSuccess) |
| error_code = 255; |
| |
| return error_code; |
| } |