blob: a1fdf0c79948c15142fba05e9228cdb85200af8f [file] [log] [blame]
/* Copyright (c) 2013 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 rollback_index functions
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define _STUB_IMPLEMENTATION_ /* So we can use memset() ourselves */
#include "2crc8.h"
#include "rollback_index.h"
#include "test_common.h"
#include "tlcl.h"
#include "utility.h"
#include "vboot_common.h"
/*
* Buffer to hold accumulated list of calls to mocked Tlcl functions.
* Each function appends itself to the buffer and updates mock_cnext.
*
* Size of mock_calls[] should be big enough to handle all expected
* call sequences; 16KB should be plenty since none of the sequences
* below is more than a few hundred bytes. We could be more clever
* and use snprintf() with length checking below, at the expense of
* making all the mock implementations bigger. If this were code used
* outside of unit tests we'd want to do that, but here if we did
* overrun the buffer the worst that's likely to happen is we'll crash
* the test, and crash = failure anyway.
*/
static char mock_calls[16384];
static char *mock_cnext = mock_calls;
/*
* Variables to support mocked error values from Tlcl functions. Each
* call, mock_count is incremented. If mock_count==fail_at_count, return
* fail_with_error instead of the normal return value.
*/
static int mock_count = 0;
static int fail_at_count = 0;
static uint32_t fail_with_error = TPM_SUCCESS;
/* Similar, to determine when to inject noise during reads & writes */
#define MAX_NOISE_COUNT 64 /* no noise after this many */
static int noise_count = 0; /* read/write attempt (zero-based) */
static int noise_on[MAX_NOISE_COUNT]; /* calls to inject noise on */
/* Params / backing store for mocked Tlcl functions. */
static TPM_PERMANENT_FLAGS mock_pflags;
static RollbackSpaceFirmware mock_rsf;
static RollbackSpaceKernel mock_rsk;
static union {
struct RollbackSpaceFwmp fwmp;
uint8_t buf[FWMP_NV_MAX_SIZE];
} mock_fwmp;
static uint32_t mock_permissions;
/* Recalculate CRC of FWMP data */
static void RecalcFwmpCrc(void)
{
mock_fwmp.fwmp.crc = vb2_crc8(mock_fwmp.buf + 2,
mock_fwmp.fwmp.struct_size - 2);
}
/* Reset the variables for the Tlcl mock functions. */
static void ResetMocks(int fail_on_call, uint32_t fail_with_err)
{
*mock_calls = 0;
mock_cnext = mock_calls;
mock_count = 0;
fail_at_count = fail_on_call;
fail_with_error = fail_with_err;
noise_count = 0;
memset(&noise_on, 0, sizeof(noise_on));
memset(&mock_pflags, 0, sizeof(mock_pflags));
memset(&mock_rsf, 0, sizeof(mock_rsf));
memset(&mock_rsk, 0, sizeof(mock_rsk));
mock_permissions = 0;
memset(mock_fwmp.buf, 0, sizeof(mock_fwmp.buf));
mock_fwmp.fwmp.struct_size = sizeof(mock_fwmp.fwmp);
mock_fwmp.fwmp.struct_version = ROLLBACK_SPACE_FWMP_VERSION;
mock_fwmp.fwmp.flags = 0x1234;
/* Put some data in the hash */
mock_fwmp.fwmp.dev_key_hash[0] = 0xaa;
mock_fwmp.fwmp.dev_key_hash[FWMP_HASH_SIZE - 1] = 0xbb;
RecalcFwmpCrc();
}
/****************************************************************************/
/* Function to garble data on its way to or from the TPM */
static void MaybeInjectNoise(void *data, uint32_t length)
{
if (noise_count < MAX_NOISE_COUNT && noise_on[noise_count]) {
uint8_t *val = data;
val[length - 1]++;
}
noise_count++;
}
/****************************************************************************/
/* Mocks for tlcl functions which log the calls made to mock_calls[]. */
uint32_t TlclLibInit(void)
{
mock_cnext += sprintf(mock_cnext, "TlclLibInit()\n");
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclStartup(void)
{
mock_cnext += sprintf(mock_cnext, "TlclStartup()\n");
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclResume(void)
{
mock_cnext += sprintf(mock_cnext, "TlclResume()\n");
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclForceClear(void)
{
mock_cnext += sprintf(mock_cnext, "TlclForceClear()\n");
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclSetEnable(void)
{
mock_cnext += sprintf(mock_cnext, "TlclSetEnable()\n");
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclSetDeactivated(uint8_t flag)
{
mock_cnext += sprintf(mock_cnext, "TlclSetDeactivated(%d)\n", flag);
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclRead(uint32_t index, void* data, uint32_t length)
{
mock_cnext += sprintf(mock_cnext, "TlclRead(0x%x, %d)\n",
index, length);
if (FIRMWARE_NV_INDEX == index) {
TEST_EQ(length, sizeof(mock_rsf), "TlclRead rsf size");
memcpy(data, &mock_rsf, length);
MaybeInjectNoise(data, length);
} else if (KERNEL_NV_INDEX == index) {
TEST_EQ(length, sizeof(mock_rsk), "TlclRead rsk size");
memcpy(data, &mock_rsk, length);
MaybeInjectNoise(data, length);
} else if (FWMP_NV_INDEX == index) {
memset(data, 0, length);
if (length > sizeof(mock_fwmp))
length = sizeof(mock_fwmp);
memcpy(data, &mock_fwmp, length);
MaybeInjectNoise(data, length);
} else {
memset(data, 0, length);
}
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclWrite(uint32_t index, const void *data, uint32_t length)
{
mock_cnext += sprintf(mock_cnext, "TlclWrite(0x%x, %d)\n",
index, length);
if (FIRMWARE_NV_INDEX == index) {
TEST_EQ(length, sizeof(mock_rsf), "TlclWrite rsf size");
memcpy(&mock_rsf, data, length);
MaybeInjectNoise(&mock_rsf, length);
} else if (KERNEL_NV_INDEX == index) {
TEST_EQ(length, sizeof(mock_rsk), "TlclWrite rsk size");
memcpy(&mock_rsk, data, length);
MaybeInjectNoise(&mock_rsk, length);
}
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclDefineSpace(uint32_t index, uint32_t perm, uint32_t size)
{
mock_cnext += sprintf(mock_cnext, "TlclDefineSpace(0x%x, 0x%x, %d)\n",
index, perm, size);
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclSelfTestFull(void)
{
mock_cnext += sprintf(mock_cnext, "TlclSelfTestFull()\n");
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclContinueSelfTest(void)
{
mock_cnext += sprintf(mock_cnext, "TlclContinueSelfTest()\n");
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclGetPermanentFlags(TPM_PERMANENT_FLAGS *pflags)
{
mock_cnext += sprintf(mock_cnext, "TlclGetPermanentFlags()\n");
memcpy(pflags, &mock_pflags, sizeof(mock_pflags));
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
/* TlclGetFlags() doesn't need mocking; it calls TlclGetPermanentFlags() */
uint32_t TlclAssertPhysicalPresence(void)
{
mock_cnext += sprintf(mock_cnext, "TlclAssertPhysicalPresence()\n");
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclFinalizePhysicalPresence(void)
{
mock_cnext += sprintf(mock_cnext, "TlclFinalizePhysicalPresence()\n");
mock_pflags.physicalPresenceLifetimeLock = 1;
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclPhysicalPresenceCMDEnable(void)
{
mock_cnext += sprintf(mock_cnext, "TlclPhysicalPresenceCMDEnable()\n");
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclSetNvLocked(void)
{
mock_cnext += sprintf(mock_cnext, "TlclSetNvLocked()\n");
mock_pflags.nvLocked = 1;
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclSetGlobalLock(void)
{
mock_cnext += sprintf(mock_cnext, "TlclSetGlobalLock()\n");
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclLockPhysicalPresence(void)
{
mock_cnext += sprintf(mock_cnext, "TlclLockPhysicalPresence()\n");
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
uint32_t TlclGetPermissions(uint32_t index, uint32_t* permissions)
{
mock_cnext += sprintf(mock_cnext, "TlclGetPermissions(0x%x)\n", index);
*permissions = mock_permissions;
return (++mock_count == fail_at_count) ? fail_with_error : TPM_SUCCESS;
}
/****************************************************************************/
/* Tests for CRC errors */
extern uint32_t ReadSpaceFirmware(RollbackSpaceFirmware *rsf);
extern uint32_t WriteSpaceFirmware(RollbackSpaceFirmware *rsf);
static void CrcTestFirmware(void)
{
RollbackSpaceFirmware rsf;
/* Noise on reading, shouldn't matter here because version == 0 */
ResetMocks(0, 0);
noise_on[0] = 1;
TEST_EQ(ReadSpaceFirmware(&rsf), 0, "ReadSpaceFirmware(), v0");
TEST_STR_EQ(mock_calls,
"TlclRead(0x1007, 10)\n",
"tlcl calls");
/*
* But if the version >= 2, it will try three times and fail because
* the CRC is no good.
*/
ResetMocks(0, 0);
mock_rsf.struct_version = 2;
TEST_EQ(ReadSpaceFirmware(&rsf), TPM_E_CORRUPTED_STATE,
"ReadSpaceFirmware(), v2, bad CRC");
TEST_STR_EQ(mock_calls,
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n",
"tlcl calls");
/* If the CRC is good and some noise happens, it should recover. */
ResetMocks(0, 0);
mock_rsf.struct_version = 2;
mock_rsf.crc8 = vb2_crc8(&mock_rsf,
offsetof(RollbackSpaceFirmware, crc8));
noise_on[0] = 1;
TEST_EQ(ReadSpaceFirmware(&rsf), 0,
"ReadSpaceFirmware(), v2, good CRC");
TEST_STR_EQ(mock_calls,
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n",
"tlcl calls");
/* A write with version < 2 should convert to v2 and create the CRC */
ResetMocks(0, 0);
memset(&rsf, 0, sizeof(rsf));
TEST_EQ(WriteSpaceFirmware(&rsf), 0, "WriteSpaceFirmware(), v0");
TEST_EQ(mock_rsf.struct_version, 2, "WriteSpaceFirmware(), check v2");
TEST_STR_EQ(mock_calls,
"TlclWrite(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n",
"tlcl calls");
/* Same as above, but with some noise during the readback */
ResetMocks(0, 0);
memset(&rsf, 0, sizeof(rsf));
noise_on[1] = 1;
noise_on[2] = 1;
TEST_EQ(WriteSpaceFirmware(&rsf), 0,
"WriteSpaceFirmware(), read noise");
TEST_STR_EQ(mock_calls,
"TlclWrite(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n",
"tlcl calls");
/* With noise during the write, we'll try the write again */
ResetMocks(0, 0);
memset(&rsf, 0, sizeof(rsf));
noise_on[0] = 1;
TEST_EQ(WriteSpaceFirmware(&rsf), 0,
"WriteSpaceFirmware(), write noise");
TEST_EQ(mock_rsf.struct_version, 2, "WriteSpaceFirmware(), check v2");
TEST_STR_EQ(mock_calls,
"TlclWrite(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclWrite(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n",
"tlcl calls");
/* Only if it just keeps on failing forever do we eventually give up */
ResetMocks(0, 0);
memset(&rsf, 0, sizeof(rsf));
memset(noise_on, 1, sizeof(noise_on));
TEST_EQ(WriteSpaceFirmware(&rsf), TPM_E_CORRUPTED_STATE,
"WriteSpaceFirmware(), always noise");
TEST_STR_EQ(mock_calls,
"TlclWrite(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclWrite(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclWrite(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n"
"TlclRead(0x1007, 10)\n",
"tlcl calls");
}
extern uint32_t ReadSpaceKernel(RollbackSpaceKernel *rsk);
extern uint32_t WriteSpaceKernel(RollbackSpaceKernel *rsk);
static void CrcTestKernel(void)
{
RollbackSpaceKernel rsk;
/* Noise on reading shouldn't matter here because version == 0 */
ResetMocks(0, 0);
noise_on[0] = 1;
TEST_EQ(ReadSpaceKernel(&rsk), 0, "ReadSpaceKernel(), v0");
TEST_STR_EQ(mock_calls,
"TlclRead(0x1008, 13)\n",
"tlcl calls");
/*
* But if the version >= 2, it will try three times and fail because
* the CRC is no good.
*/
ResetMocks(0, 0);
mock_rsk.struct_version = 2;
TEST_EQ(ReadSpaceKernel(&rsk), TPM_E_CORRUPTED_STATE,
"ReadSpaceKernel(), v2, bad CRC");
TEST_STR_EQ(mock_calls,
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n",
"tlcl calls");
/* If the CRC is good and some noise happens, it should recover. */
ResetMocks(0, 0);
mock_rsk.struct_version = 2;
mock_rsk.crc8 = vb2_crc8(&mock_rsk,
offsetof(RollbackSpaceKernel, crc8));
noise_on[0] = 1;
TEST_EQ(ReadSpaceKernel(&rsk), 0, "ReadSpaceKernel(), v2, good CRC");
TEST_STR_EQ(mock_calls,
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n",
"tlcl calls");
/* A write with version < 2 should convert to v2 and create the CRC */
ResetMocks(0, 0);
memset(&rsk, 0, sizeof(rsk));
TEST_EQ(WriteSpaceKernel(&rsk), 0, "WriteSpaceKernel(), v0");
TEST_EQ(mock_rsk.struct_version, 2, "WriteSpaceKernel(), check v2");
TEST_STR_EQ(mock_calls,
"TlclWrite(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n",
"tlcl calls");
/* Same as above, but with some noise during the readback */
ResetMocks(0, 0);
memset(&rsk, 0, sizeof(rsk));
noise_on[1] = 1;
noise_on[2] = 1;
TEST_EQ(WriteSpaceKernel(&rsk), 0, "WriteSpaceKernel(), read noise");
TEST_STR_EQ(mock_calls,
"TlclWrite(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n",
"tlcl calls");
/* With noise during the write, we'll try the write again */
ResetMocks(0, 0);
memset(&rsk, 0, sizeof(rsk));
noise_on[0] = 1;
TEST_EQ(WriteSpaceKernel(&rsk), 0, "WriteSpaceKernel(), write noise");
TEST_EQ(mock_rsk.struct_version, 2, "WriteSpaceKernel(), check v2");
TEST_STR_EQ(mock_calls,
"TlclWrite(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclWrite(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n",
"tlcl calls");
/* Only if it just keeps on failing forever do we eventually give up */
ResetMocks(0, 0);
memset(&rsk, 0, sizeof(rsk));
memset(noise_on, 1, sizeof(noise_on));
TEST_EQ(WriteSpaceKernel(&rsk), TPM_E_CORRUPTED_STATE,
"WriteSpaceKernel(), always noise");
TEST_STR_EQ(mock_calls,
"TlclWrite(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclWrite(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclWrite(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n",
"tlcl calls");
}
/****************************************************************************/
/* Tests for misc helper functions */
static void MiscTest(void)
{
uint8_t buf[8];
ResetMocks(0, 0);
TEST_EQ(TPMClearAndReenable(), 0, "TPMClearAndReenable()");
TEST_STR_EQ(mock_calls,
"TlclForceClear()\n"
"TlclSetEnable()\n"
"TlclSetDeactivated(0)\n",
"tlcl calls");
ResetMocks(0, 0);
TEST_EQ(SafeWrite(0x123, buf, 8), 0, "SafeWrite()");
TEST_STR_EQ(mock_calls,
"TlclWrite(0x123, 8)\n",
"tlcl calls");
ResetMocks(1, TPM_E_BADINDEX);
TEST_EQ(SafeWrite(0x123, buf, 8), TPM_E_BADINDEX, "SafeWrite() bad");
TEST_STR_EQ(mock_calls,
"TlclWrite(0x123, 8)\n",
"tlcl calls");
ResetMocks(1, TPM_E_MAXNVWRITES);
TEST_EQ(SafeWrite(0x123, buf, 8), 0, "SafeWrite() retry max writes");
TEST_STR_EQ(mock_calls,
"TlclWrite(0x123, 8)\n"
"TlclForceClear()\n"
"TlclSetEnable()\n"
"TlclSetDeactivated(0)\n"
"TlclWrite(0x123, 8)\n",
"tlcl calls");
}
/****************************************************************************/
/* Tests for RollbackKernel() calls */
static void RollbackKernelTest(void)
{
uint32_t version = 0;
/* Normal read */
ResetMocks(0, 0);
mock_rsk.uid = ROLLBACK_SPACE_KERNEL_UID;
mock_permissions = TPM_NV_PER_PPWRITE;
mock_rsk.kernel_versions = 0x87654321;
TEST_EQ(RollbackKernelRead(&version), 0, "RollbackKernelRead()");
TEST_STR_EQ(mock_calls,
"TlclRead(0x1008, 13)\n"
"TlclGetPermissions(0x1008)\n",
"tlcl calls");
TEST_EQ(version, 0x87654321, "RollbackKernelRead() version");
/* Read error */
ResetMocks(1, TPM_E_IOERROR);
TEST_EQ(RollbackKernelRead(&version), TPM_E_IOERROR,
"RollbackKernelRead() error");
TEST_STR_EQ(mock_calls,
"TlclRead(0x1008, 13)\n",
"tlcl calls");
/* Wrong permission or UID will return error */
ResetMocks(0, 0);
mock_rsk.uid = ROLLBACK_SPACE_KERNEL_UID + 1;
mock_permissions = TPM_NV_PER_PPWRITE;
TEST_EQ(RollbackKernelRead(&version), TPM_E_CORRUPTED_STATE,
"RollbackKernelRead() bad uid");
ResetMocks(0, 0);
mock_rsk.uid = ROLLBACK_SPACE_KERNEL_UID;
mock_permissions = TPM_NV_PER_PPWRITE + 1;
TEST_EQ(RollbackKernelRead(&version), TPM_E_CORRUPTED_STATE,
"RollbackKernelRead() bad permissions");
/* Test write */
ResetMocks(0, 0);
TEST_EQ(RollbackKernelWrite(0xBEAD4321), 0, "RollbackKernelWrite()");
TEST_EQ(mock_rsk.kernel_versions, 0xBEAD4321,
"RollbackKernelWrite() version");
TEST_STR_EQ(mock_calls,
"TlclRead(0x1008, 13)\n"
"TlclWrite(0x1008, 13)\n"
"TlclRead(0x1008, 13)\n",
"tlcl calls");
ResetMocks(1, TPM_E_IOERROR);
TEST_EQ(RollbackKernelWrite(123), TPM_E_IOERROR,
"RollbackKernelWrite() error");
/* Test lock (recovery off) */
ResetMocks(1, TPM_E_IOERROR);
TEST_EQ(RollbackKernelLock(0), TPM_E_IOERROR,
"RollbackKernelLock() error");
/* Test lock with recovery on; shouldn't lock PP */
ResetMocks(0, 0);
TEST_EQ(RollbackKernelLock(1), 0, "RollbackKernelLock() in recovery");
TEST_STR_EQ(mock_calls, "", "no tlcl calls");
ResetMocks(0, 0);
TEST_EQ(RollbackKernelLock(0), 0, "RollbackKernelLock()");
TEST_STR_EQ(mock_calls,
"TlclLockPhysicalPresence()\n",
"tlcl calls");
}
/****************************************************************************/
/* Tests for RollbackFwmpRead() calls */
static void RollbackFwmpTest(void)
{
struct RollbackSpaceFwmp fwmp;
struct RollbackSpaceFwmp fwmp_zero = {0};
/* Normal read */
ResetMocks(0, 0);
TEST_EQ(RollbackFwmpRead(&fwmp), 0, "RollbackFwmpRead()");
TEST_STR_EQ(mock_calls,
"TlclRead(0x100a, 40)\n",
" tlcl calls");
TEST_EQ(0, memcmp(&fwmp, &mock_fwmp, sizeof(fwmp)), " data");
/* Read error */
ResetMocks(1, TPM_E_IOERROR);
TEST_EQ(RollbackFwmpRead(&fwmp), TPM_E_IOERROR,
"RollbackFwmpRead() error");
TEST_STR_EQ(mock_calls,
"TlclRead(0x100a, 40)\n",
" tlcl calls");
TEST_EQ(0, memcmp(&fwmp, &fwmp_zero, sizeof(fwmp)), " data clear");
/* Not present isn't an error; just returns empty data */
ResetMocks(1, TPM_E_BADINDEX);
TEST_EQ(RollbackFwmpRead(&fwmp), 0, "RollbackFwmpRead() not present");
TEST_STR_EQ(mock_calls,
"TlclRead(0x100a, 40)\n",
" tlcl calls");
TEST_EQ(0, memcmp(&fwmp, &fwmp_zero, sizeof(fwmp)), " data clear");
/* Struct size too small */
ResetMocks(0, 0);
mock_fwmp.fwmp.struct_size--;
TEST_EQ(RollbackFwmpRead(&fwmp), TPM_E_STRUCT_SIZE,
"RollbackFwmpRead() too small");
/* Struct size too large with good CRC */
ResetMocks(0, 0);
mock_fwmp.fwmp.struct_size += 4;
RecalcFwmpCrc();
TEST_EQ(RollbackFwmpRead(&fwmp), 0, "RollbackFwmpRead() bigger");
TEST_STR_EQ(mock_calls,
"TlclRead(0x100a, 40)\n"
"TlclRead(0x100a, 44)\n",
" tlcl calls");
TEST_EQ(0, memcmp(&fwmp, &mock_fwmp, sizeof(fwmp)), " data");
/* Bad CRC causes retry, then eventual failure */
ResetMocks(0, 0);
mock_fwmp.fwmp.crc++;
TEST_EQ(RollbackFwmpRead(&fwmp), TPM_E_CORRUPTED_STATE,
"RollbackFwmpRead() crc");
TEST_STR_EQ(mock_calls,
"TlclRead(0x100a, 40)\n"
"TlclRead(0x100a, 40)\n"
"TlclRead(0x100a, 40)\n",
" tlcl calls");
/* Struct size too large with bad CRC */
ResetMocks(0, 0);
mock_fwmp.fwmp.struct_size += 4;
RecalcFwmpCrc();
mock_fwmp.fwmp.crc++;
TEST_EQ(RollbackFwmpRead(&fwmp), TPM_E_CORRUPTED_STATE,
"RollbackFwmpRead() bigger crc");
TEST_STR_EQ(mock_calls,
"TlclRead(0x100a, 40)\n"
"TlclRead(0x100a, 44)\n"
"TlclRead(0x100a, 40)\n"
"TlclRead(0x100a, 44)\n"
"TlclRead(0x100a, 40)\n"
"TlclRead(0x100a, 44)\n",
" tlcl calls");
TEST_EQ(0, memcmp(&fwmp, &fwmp_zero, sizeof(fwmp)), " data");
/* Minor version difference ok */
ResetMocks(0, 0);
mock_fwmp.fwmp.struct_version++;
RecalcFwmpCrc();
TEST_EQ(RollbackFwmpRead(&fwmp), 0, "RollbackFwmpRead() minor version");
TEST_EQ(0, memcmp(&fwmp, &mock_fwmp, sizeof(fwmp)), " data");
/* Major version difference not ok */
ResetMocks(0, 0);
mock_fwmp.fwmp.struct_version += 0x10;
RecalcFwmpCrc();
TEST_EQ(RollbackFwmpRead(&fwmp), TPM_E_STRUCT_VERSION,
"RollbackFwmpRead() major version");
}
int main(int argc, char* argv[])
{
CrcTestFirmware();
CrcTestKernel();
MiscTest();
RollbackKernelTest();
RollbackFwmpTest();
return gTestSuccess ? 0 : 255;
}