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/* SPDX-License-Identifier: BSD-2 */
/***********************************************************************
* Copyright (c) 2017-2018, Intel Corporation
*
* All rights reserved.
***********************************************************************/
#include <stdarg.h>
#include <stddef.h>
#include <string.h>
#include <setjmp.h>
#include <cmocka.h>
#include <stdio.h>
#include "tss2_mu.h"
#include "util/tss2_endian.h"
/*
* Success case
*/
static void
tpmu_marshal_success(void **state)
{
TPMU_HA ha = {0};
TPMU_SIGNATURE sig = {0};
uint8_t buffer[sizeof(ha) + sizeof(sig)] = { 0 };
size_t buffer_size = sizeof(buffer);
TPMS_SIGNATURE_ECDSA *ptr;
TPM2B_ECC_PARAMETER *ptr2;
TSS2_RC rc;
memset(ha.sha512, 'a', TPM2_SHA512_DIGEST_SIZE);
rc = Tss2_MU_TPMU_HA_Marshal(&ha, TPM2_ALG_SHA512, buffer, buffer_size, NULL);
assert_int_equal (rc, TSS2_RC_SUCCESS);
assert_int_equal (memcmp(buffer, ha.sha512, TPM2_SHA512_DIGEST_SIZE), 0);
sig.ecdsa.hash = TPM2_ALG_SHA1;
sig.ecdsa.signatureR.size = 4;
sig.ecdsa.signatureR.buffer[0] = 'a';
sig.ecdsa.signatureR.buffer[1] = 'b';
sig.ecdsa.signatureR.buffer[2] = 'c';
sig.ecdsa.signatureR.buffer[3] = 'd';
sig.ecdsa.signatureS.size = 4;
sig.ecdsa.signatureS.buffer[0] = 'e';
sig.ecdsa.signatureS.buffer[1] = 'd';
sig.ecdsa.signatureS.buffer[2] = 'f';
sig.ecdsa.signatureS.buffer[3] = 'g';
rc = Tss2_MU_TPMU_SIGNATURE_Marshal(&sig, TPM2_ALG_ECDSA, buffer, buffer_size, NULL);
assert_int_equal (rc, TSS2_RC_SUCCESS);
ptr = (TPMS_SIGNATURE_ECDSA *) buffer;
assert_int_equal (ptr->hash, HOST_TO_BE_16(TPM2_ALG_SHA1));
assert_int_equal (ptr->signatureR.size, HOST_TO_BE_16(4));
assert_int_equal (ptr->signatureR.buffer[0], 'a');
assert_int_equal (ptr->signatureR.buffer[1], 'b');
assert_int_equal (ptr->signatureR.buffer[2], 'c');
assert_int_equal (ptr->signatureR.buffer[3], 'd');
ptr2 = (TPM2B_ECC_PARAMETER *) (buffer + 8);
assert_int_equal (ptr2->size, HOST_TO_BE_16(4));
assert_int_equal (ptr2->buffer[0], 'e');
assert_int_equal (ptr2->buffer[1], 'd');
assert_int_equal (ptr2->buffer[2], 'f');
assert_int_equal (ptr2->buffer[3], 'g');
}
/*
* Success case with a valid offset
*/
static void
tpmu_marshal_success_offset(void **state)
{
TPMU_HA ha = {0};
TPMU_SIGNATURE sig = {0};
uint8_t buffer[sizeof(ha) + sizeof(sig) + 10] = { 0 };
size_t buffer_size = sizeof(buffer);
TPMS_SIGNATURE_ECDSA *ptr;
TPM2B_ECC_PARAMETER *ptr2;
size_t offset = 10;
TSS2_RC rc;
memset(ha.sha512, 'a', TPM2_SHA512_DIGEST_SIZE);
rc = Tss2_MU_TPMU_HA_Marshal(&ha, TPM2_ALG_SHA512, buffer, buffer_size, &offset);
assert_int_equal (rc, TSS2_RC_SUCCESS);
assert_int_equal (memcmp(buffer + 10, ha.sha512, TPM2_SHA512_DIGEST_SIZE), 0);
assert_int_equal (offset, 10 + TPM2_SHA512_DIGEST_SIZE);
sig.ecdsa.hash = TPM2_ALG_SHA1;
sig.ecdsa.signatureR.size = 4;
sig.ecdsa.signatureR.buffer[0] = 'a';
sig.ecdsa.signatureR.buffer[1] = 'b';
sig.ecdsa.signatureR.buffer[2] = 'c';
sig.ecdsa.signatureR.buffer[3] = 'd';
sig.ecdsa.signatureS.size = 4;
sig.ecdsa.signatureS.buffer[0] = 'e';
sig.ecdsa.signatureS.buffer[1] = 'd';
sig.ecdsa.signatureS.buffer[2] = 'f';
sig.ecdsa.signatureS.buffer[3] = 'g';
rc = Tss2_MU_TPMU_SIGNATURE_Marshal(&sig, TPM2_ALG_ECDSA, buffer, buffer_size, &offset);
assert_int_equal (rc, TSS2_RC_SUCCESS);
ptr = (TPMS_SIGNATURE_ECDSA *) (buffer + 10 + TPM2_SHA512_DIGEST_SIZE);
assert_int_equal (ptr->hash, HOST_TO_BE_16(TPM2_ALG_SHA1));
assert_int_equal (ptr->signatureR.size, HOST_TO_BE_16(4));
assert_int_equal (ptr->signatureR.buffer[0], 'a');
assert_int_equal (ptr->signatureR.buffer[1], 'b');
assert_int_equal (ptr->signatureR.buffer[2], 'c');
assert_int_equal (ptr->signatureR.buffer[3], 'd');
ptr2 = (TPM2B_ECC_PARAMETER *) (buffer + 10 + TPM2_SHA512_DIGEST_SIZE + 8);
assert_int_equal (ptr2->size, HOST_TO_BE_16(4));
assert_int_equal (ptr2->buffer[0], 'e');
assert_int_equal (ptr2->buffer[1], 'd');
assert_int_equal (ptr2->buffer[2], 'f');
assert_int_equal (ptr2->buffer[3], 'g');
assert_int_equal (offset, 10 + TPM2_SHA512_DIGEST_SIZE + 2 + ((2 + 1 + 1 + 1 + 1) * 2));
}
/*
* Success case with a null buffer
*/
static void
tpmu_marshal_buffer_null_with_offset(void **state)
{
TPMU_HA ha = {0};
TPMU_SIGNATURE sig = {0};
size_t buffer_size = sizeof(ha) + sizeof(sig) + 10;
size_t offset = 10;
TSS2_RC rc;
memset(ha.sha512, 'a', TPM2_SHA512_DIGEST_SIZE);
rc = Tss2_MU_TPMU_HA_Marshal(&ha, TPM2_ALG_SHA512, NULL, buffer_size, &offset);
assert_int_equal (rc, TSS2_RC_SUCCESS);
assert_int_equal (offset, 10 + TPM2_SHA512_DIGEST_SIZE);
sig.ecdsa.hash = TPM2_ALG_SHA1;
sig.ecdsa.signatureR.size = 4;
sig.ecdsa.signatureR.buffer[0] = 'a';
sig.ecdsa.signatureR.buffer[1] = 'b';
sig.ecdsa.signatureR.buffer[2] = 'c';
sig.ecdsa.signatureR.buffer[3] = 'd';
sig.ecdsa.signatureS.size = 4;
sig.ecdsa.signatureS.buffer[0] = 'e';
sig.ecdsa.signatureS.buffer[1] = 'd';
sig.ecdsa.signatureS.buffer[2] = 'f';
sig.ecdsa.signatureS.buffer[3] = 'g';
rc = Tss2_MU_TPMU_SIGNATURE_Marshal(&sig, TPM2_ALG_ECDSA, NULL, buffer_size, &offset);
assert_int_equal (rc, TSS2_RC_SUCCESS);
assert_int_equal (offset, 10 + TPM2_SHA512_DIGEST_SIZE + 2 + ((2 + 1 + 1 + 1 + 1) * 2));
}
/*
* Invalid case with a null buffer and a null offset
*/
static void
tpmu_marshal_buffer_null_offset_null(void **state)
{
TPMU_HA ha = {0};
TPMU_SIGNATURE sig = {0};
TSS2_RC rc;
rc = Tss2_MU_TPMU_HA_Marshal(&ha, TPM2_ALG_SHA512, NULL, sizeof(ha), NULL);
assert_int_equal (rc, TSS2_MU_RC_BAD_REFERENCE);
rc = Tss2_MU_TPMU_SIGNATURE_Marshal(&sig, TPM2_ALG_ECDSA, NULL, sizeof(sig), NULL);
assert_int_equal (rc, TSS2_MU_RC_BAD_REFERENCE);
}
/*
* Invalid case with not big enough buffer
*/
static void
tpmu_marshal_buffer_size_lt_data_nad_lt_offset(void **state)
{
TPMU_HA ha = {0};
TPMU_SIGNATURE sig = {0};
uint8_t buffer[sizeof(ha) + sizeof(sig) + 10] = { 0 };
size_t offset = 10;
TSS2_RC rc;
memset(ha.sha512, 'a', TPM2_SHA512_DIGEST_SIZE);
rc = Tss2_MU_TPMU_HA_Marshal(&ha, TPM2_ALG_SHA512, buffer, TPM2_SHA512_DIGEST_SIZE - 1, &offset);
assert_int_equal (rc, TSS2_MU_RC_INSUFFICIENT_BUFFER);
assert_int_equal (offset, 10);
sig.ecdsa.hash = TPM2_ALG_SHA1;
sig.ecdsa.signatureR.size = 4;
sig.ecdsa.signatureR.buffer[0] = 'a';
sig.ecdsa.signatureR.buffer[1] = 'b';
sig.ecdsa.signatureR.buffer[2] = 'c';
sig.ecdsa.signatureR.buffer[3] = 'd';
sig.ecdsa.signatureS.size = 4;
sig.ecdsa.signatureS.buffer[0] = 'e';
sig.ecdsa.signatureS.buffer[1] = 'd';
sig.ecdsa.signatureS.buffer[2] = 'f';
sig.ecdsa.signatureS.buffer[3] = 'g';
rc = Tss2_MU_TPMU_SIGNATURE_Marshal(&sig, TPM2_ALG_ECDSA, buffer, 12, &offset);
assert_int_equal (rc, TSS2_MU_RC_INSUFFICIENT_BUFFER);
assert_int_equal (offset, 10);
}
/*
* Success case
*/
static void
tpmu_unmarshal_success(void **state)
{
TPMU_HA ha = {0};
TPMU_SIGNATURE sig = {0};
uint8_t buffer[sizeof(ha) + sizeof(sig)] = { 0 };
size_t buffer_size = sizeof(buffer);
TPMS_SIGNATURE_ECDSA *ptr;
TPM2B_ECC_PARAMETER *ptr2;
size_t offset = 0;
TSS2_RC rc;
memset(buffer, 'a', TPM2_SHA512_DIGEST_SIZE);
rc = Tss2_MU_TPMU_HA_Unmarshal(buffer, buffer_size, &offset, TPM2_ALG_SHA512, &ha);
assert_int_equal (rc, TSS2_RC_SUCCESS);
assert_int_equal (offset, TPM2_SHA512_DIGEST_SIZE);
assert_int_equal (memcmp(buffer, ha.sha512, TPM2_SHA512_DIGEST_SIZE), 0);
offset = 0;
ptr = (TPMS_SIGNATURE_ECDSA *) buffer;
ptr2 = (TPM2B_ECC_PARAMETER *) (buffer + 8);
ptr->hash = HOST_TO_BE_16(TPM2_ALG_SHA1);
ptr->signatureR.size = HOST_TO_BE_16(4);
ptr->signatureR.buffer[0] = 'a';
ptr->signatureR.buffer[1] = 'b';
ptr->signatureR.buffer[2] = 'c';
ptr->signatureR.buffer[3] = 'd';
ptr2->size = HOST_TO_BE_16(4);
ptr2->buffer[0] = 'e';
ptr2->buffer[1] = 'd';
ptr2->buffer[2] = 'f';
ptr2->buffer[3] = 'g';
rc = Tss2_MU_TPMU_SIGNATURE_Unmarshal(buffer, buffer_size, &offset, TPM2_ALG_ECDSA, &sig);
assert_int_equal (rc, TSS2_RC_SUCCESS);
assert_int_equal (offset, 14);
assert_int_equal (sig.ecdsa.hash, TPM2_ALG_SHA1);
assert_int_equal (sig.ecdsa.signatureR.size, 4);
assert_int_equal (sig.ecdsa.signatureR.buffer[0], 'a');
assert_int_equal (sig.ecdsa.signatureR.buffer[1], 'b');
assert_int_equal (sig.ecdsa.signatureR.buffer[2], 'c');
assert_int_equal (sig.ecdsa.signatureR.buffer[3], 'd');
assert_int_equal (sig.ecdsa.signatureS.size, 4);
assert_int_equal (sig.ecdsa.signatureS.buffer[0], 'e');
assert_int_equal (sig.ecdsa.signatureS.buffer[1], 'd');
assert_int_equal (sig.ecdsa.signatureS.buffer[2], 'f');
assert_int_equal (sig.ecdsa.signatureS.buffer[3], 'g');
}
/*
* Invalid test case with buffer null and dest null
*/
static void
tpmu_unmarshal_dest_null_buff_null(void **state)
{
size_t offset = 1;
TSS2_RC rc;
rc = Tss2_MU_TPMU_HA_Unmarshal(NULL, TPM2_SHA512_DIGEST_SIZE, &offset, TPM2_ALG_SHA512, NULL);
assert_int_equal (rc, TSS2_MU_RC_BAD_REFERENCE);
assert_int_equal (offset, 1);
rc = Tss2_MU_TPMU_SIGNATURE_Unmarshal(NULL, 32, &offset, TPM2_ALG_ECDSA, NULL);
assert_int_equal (rc, TSS2_MU_RC_BAD_REFERENCE);
assert_int_equal (offset, 1);
}
/*
* Invalid test case with offset null and dest null
*/
static void
tpmu_unmarshal_buffer_null_offset_null(void **state)
{
uint8_t buffer[sizeof(TPMU_HA) + sizeof(TPMU_SIGNATURE)] = { 0 };
size_t buffer_size = sizeof(buffer);
TSS2_RC rc;
rc = Tss2_MU_TPMU_HA_Unmarshal(buffer, buffer_size, NULL, TPM2_ALG_SHA512, NULL);
assert_int_equal (rc, TSS2_MU_RC_BAD_REFERENCE);
rc = Tss2_MU_TPMU_SIGNATURE_Unmarshal(buffer, buffer_size, NULL, TPM2_ALG_ECDSA, NULL);
assert_int_equal (rc, TSS2_MU_RC_BAD_REFERENCE);
}
/*
* Test case ensures the offset is updated when dest is NULL
* and offset is valid
*/
static void
tpmu_unmarshal_dest_null_offset_valid(void **state)
{
uint8_t buffer[sizeof(TPMU_HA) + sizeof(TPMU_SIGNATURE)] = { 0 };
size_t buffer_size = sizeof(buffer);
TPMS_SIGNATURE_ECDSA *ptr;
TPM2B_ECC_PARAMETER *ptr2;
size_t offset = 0;
TSS2_RC rc;
memset(buffer, 'a', TPM2_SHA512_DIGEST_SIZE);
rc = Tss2_MU_TPMU_HA_Unmarshal(buffer, buffer_size, &offset, TPM2_ALG_SHA512, NULL);
assert_int_equal (rc, TSS2_RC_SUCCESS);
assert_int_equal (offset, TPM2_SHA512_DIGEST_SIZE);
offset = 0;
ptr = (TPMS_SIGNATURE_ECDSA *) buffer;
ptr2 = (TPM2B_ECC_PARAMETER *) (buffer + 8);
ptr->hash = HOST_TO_BE_16(TPM2_ALG_SHA1);
ptr->signatureR.size = HOST_TO_BE_16(4);
ptr->signatureR.buffer[0] = 'a';
ptr->signatureR.buffer[1] = 'b';
ptr->signatureR.buffer[2] = 'c';
ptr->signatureR.buffer[3] = 'd';
ptr2->size = HOST_TO_BE_16(4);
ptr2->buffer[0] = 'e';
ptr2->buffer[1] = 'd';
ptr2->buffer[2] = 'f';
ptr2->buffer[3] = 'g';
rc = Tss2_MU_TPMU_SIGNATURE_Unmarshal(buffer, buffer_size, &offset, TPM2_ALG_ECDSA, NULL);
assert_int_equal (rc, TSS2_RC_SUCCESS);
assert_int_equal (offset, 14);
}
/*
* Invalid case with not big enough buffer. Make sure offest is untouched.
*/
static void
tpmu_unmarshal_buffer_size_lt_data_nad_lt_offset(void **state)
{
TPMU_HA ha = {0};
TPMU_SIGNATURE sig = {0};
uint8_t buffer[sizeof(ha) + sizeof(sig)] = { 0 };
TPMS_SIGNATURE_ECDSA *ptr;
TPM2B_ECC_PARAMETER *ptr2;
size_t offset = 5;
TSS2_RC rc;
memset(buffer, 'a', TPM2_SHA512_DIGEST_SIZE);
rc = Tss2_MU_TPMU_HA_Unmarshal(buffer, TPM2_SHA512_DIGEST_SIZE - 1, &offset, TPM2_ALG_SHA512, &ha);
assert_int_equal (rc, TSS2_MU_RC_INSUFFICIENT_BUFFER);
assert_int_equal (offset, 5);
ptr = (TPMS_SIGNATURE_ECDSA *) buffer;
ptr2 = (TPM2B_ECC_PARAMETER *) (buffer + 8);
ptr->hash = HOST_TO_BE_16(TPM2_ALG_SHA1);
ptr->signatureR.size = HOST_TO_BE_16(4);
ptr->signatureR.buffer[0] = 'a';
ptr->signatureR.buffer[1] = 'b';
ptr->signatureR.buffer[2] = 'c';
ptr->signatureR.buffer[3] = 'd';
ptr2->size = HOST_TO_BE_16(4);
ptr2->buffer[0] = 'e';
ptr2->buffer[1] = 'd';
ptr2->buffer[2] = 'f';
ptr2->buffer[3] = 'g';
rc = Tss2_MU_TPMU_SIGNATURE_Unmarshal(buffer, 14, &offset, TPM2_ALG_ECDSA, &sig);
assert_int_equal (rc, TSS2_MU_RC_INSUFFICIENT_BUFFER);
assert_int_equal (offset, 5);
}
static void
tpmu_name_marshal(void **state)
{
TPMU_NAME name = {0};
TPMT_HA ha = {0};
uint8_t buf[256] = {0};
TPM2_HANDLE hdl = TPM2_RS_PW;
TPM2_HANDLE hdl_expected = HOST_TO_BE_32(TPM2_RS_PW);
TPM2_ALG_ID id_expected = HOST_TO_BE_16(TPM2_ALG_SHA1);
size_t size = sizeof(hdl), offset = 0;
const char digest[] = {0xa, 0xb, 0xc, 0xd, 0xe, 0xf, 0x01, 0x02,
0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
0x10, 0x11, 0x12, 0x13, 0x14};
TPM2_RC rc;
/* Handle case */
size = sizeof(hdl);
name.handle = hdl;
rc = Tss2_MU_TPMU_NAME_Marshal(&name, size, buf, sizeof(hdl), &offset);
assert_int_equal (rc, TSS2_RC_SUCCESS);
assert_int_equal (offset, sizeof(hdl));
assert_memory_equal ((void *) buf, &hdl_expected, sizeof(hdl));
/* Digest case */
offset = 0;
size = sizeof(TPM2_ALG_ID) + TPM2_SHA1_DIGEST_SIZE;
ha.hashAlg = TPM2_ALG_SHA1;
memcpy(&ha.digest, digest, TPM2_SHA1_DIGEST_SIZE);
memcpy(&name.digest, &ha, sizeof(ha));
rc = Tss2_MU_TPMU_NAME_Marshal(&name, size, buf, TPM2_SHA1_DIGEST_SIZE + 2, &offset);
assert_int_equal (rc, TSS2_RC_SUCCESS);
assert_int_equal (offset, TPM2_SHA1_DIGEST_SIZE + 2);
assert_memory_equal (buf, &id_expected, sizeof(TPM2_ALG_ID));
assert_memory_equal (buf + 2, digest, TPM2_SHA1_DIGEST_SIZE);
}
int main(void) {
const struct CMUnitTest tests[] = {
cmocka_unit_test (tpmu_marshal_success),
cmocka_unit_test (tpmu_marshal_success_offset),
cmocka_unit_test (tpmu_marshal_buffer_null_with_offset),
cmocka_unit_test (tpmu_marshal_buffer_null_offset_null),
cmocka_unit_test (tpmu_marshal_buffer_size_lt_data_nad_lt_offset),
cmocka_unit_test (tpmu_unmarshal_success),
cmocka_unit_test (tpmu_unmarshal_dest_null_buff_null),
cmocka_unit_test (tpmu_unmarshal_buffer_null_offset_null),
cmocka_unit_test (tpmu_unmarshal_dest_null_offset_valid),
cmocka_unit_test (tpmu_unmarshal_buffer_size_lt_data_nad_lt_offset),
cmocka_unit_test (tpmu_name_marshal),
};
return cmocka_run_group_tests(tests, NULL, NULL);
}
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