| /* 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> |
| |
| #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; |
| } |