tests/vb2_api2_tests.c - mirrors/cros/chromiumos/platform/vboot_reference - Git at Google

 /* Copyright (c) 2014 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 api library, new style structs
  */

 #include <stdio.h>

 #include "2sysincludes.h"
 #include "2api.h"
 #include "2common.h"
 #include "2misc.h"
 #include "2nvstorage.h"
 #include "2rsa.h"
 #include "2secdata.h"

 #include "test_common.h"
 #include "vb2_convert_structs.h"

 /* Common context for tests */
 static uint8_t workbuf[VB2_WORKBUF_RECOMMENDED_SIZE]
 	__attribute__ ((aligned (16)));
 static struct vb2_context ctx;
 static struct vb2_shared_data *sd;

 static const uint8_t mock_body[320] = "Mock body";
 static const int mock_body_size = sizeof(mock_body);
 static const int mock_algorithm = VB2_ALG_RSA2048_SHA256;
 static const int mock_hash_alg = VB2_HASH_SHA256;
 static int mock_sig_size;

 static const struct vb2_guid test_guid[4] = {
 	{.raw = {0x11}},
 	{.raw = {0x22}},
 	{.raw = {0x33}},
 	{.raw = {0x44}},
 };

 /* Mocked function data */
 static int retval_vb2_load_fw_keyblock;
 static int retval_vb2_load_fw_preamble;

 /* Type of test to reset for */
 enum reset_type {
 	FOR_MISC,
 	FOR_EXTEND_HASH,
 	FOR_CHECK_HASH,
 };

 static void reset_common_data(enum reset_type t)
 {
 	struct vb2_fw_preamble2 *pre;
 	struct vb2_signature2 *sig;
 	uint32_t sig_offset;

 	int i;

 	memset(workbuf, 0xaa, sizeof(workbuf));

 	memset(&ctx, 0, sizeof(ctx));
 	ctx.workbuf = workbuf;
 	ctx.workbuf_size = sizeof(workbuf);

 	vb2_init_context(&ctx);
 	sd = vb2_get_sd(&ctx);

 	vb2_nv_init(&ctx);

 	vb2_secdata_create(&ctx);
 	vb2_secdata_init(&ctx);

 	retval_vb2_load_fw_keyblock = VB2_SUCCESS;
 	retval_vb2_load_fw_preamble = VB2_SUCCESS;

 	sd->workbuf_preamble_offset = ctx.workbuf_used;
 	pre = (struct vb2_fw_preamble2 *)
 		(ctx.workbuf + sd->workbuf_preamble_offset);
 	pre->hash_count = 3;
 	pre->hash_offset = sig_offset = sizeof(*pre);

 	for (i = 0; i < 3; i++) {
 		sig = vb2_create_hash_sig(mock_body,
 					  mock_body_size - 16 * i,
 					  mock_hash_alg);
 		memcpy(&sig->guid, test_guid + i, sizeof(sig->guid));
 		memcpy((uint8_t *)pre + sig_offset, sig, sig->c.total_size);
 		sig_offset += sig->c.total_size;
 		mock_sig_size = sig->c.total_size;
 		free(sig);
 	}

 	sd->workbuf_preamble_size = sig_offset;
 	ctx.workbuf_used = sd->workbuf_preamble_offset
 		+ sd->workbuf_preamble_size;

 	if (t == FOR_EXTEND_HASH || t == FOR_CHECK_HASH)
 		vb2api_init_hash2(&ctx, test_guid, NULL);

 	if (t == FOR_CHECK_HASH)
 		vb2api_extend_hash(&ctx, mock_body, mock_body_size);
 };

 /* Mocked functions */

 int vb2_load_fw_keyblock2(struct vb2_context *ctx)
 {
 	return retval_vb2_load_fw_keyblock;
 }

 int vb2_load_fw_preamble2(struct vb2_context *ctx)
 {
 	return retval_vb2_load_fw_preamble;
 }

 /* Tests */

 static void phase3_tests(void)
 {
 	reset_common_data(FOR_MISC);
 	TEST_SUCC(vb2api_fw_phase3_2(&ctx), "phase3 good");

 	reset_common_data(FOR_MISC);
 	retval_vb2_load_fw_keyblock = VB2_ERROR_MOCK;
 	TEST_EQ(vb2api_fw_phase3_2(&ctx), VB2_ERROR_MOCK, "phase3 keyblock");
 	TEST_EQ(vb2_nv_get(&ctx, VB2_NV_RECOVERY_REQUEST),
 		VB2_RECOVERY_RO_INVALID_RW, "  recovery reason");

 	reset_common_data(FOR_MISC);
 	retval_vb2_load_fw_preamble = VB2_ERROR_MOCK;
 	TEST_EQ(vb2api_fw_phase3_2(&ctx), VB2_ERROR_MOCK, "phase3 keyblock");
 	TEST_EQ(vb2_nv_get(&ctx, VB2_NV_RECOVERY_REQUEST),
 		VB2_RECOVERY_RO_INVALID_RW, "  recovery reason");
 }

 static void init_hash_tests(void)
 {
 	struct vb2_fw_preamble2 *pre;
 	struct vb2_signature2 *sig;
 	int wb_used_before;
 	uint32_t size;

 	reset_common_data(FOR_MISC);
 	pre = (struct vb2_fw_preamble2 *)
 		(ctx.workbuf + sd->workbuf_preamble_offset);
 	sig = (struct vb2_signature2 *)((uint8_t *)pre + pre->hash_offset);

 	wb_used_before = ctx.workbuf_used;
 	TEST_SUCC(vb2api_init_hash2(&ctx, test_guid, &size),
 		  "init hash good");
 	TEST_EQ(sd->workbuf_hash_offset,
 		(wb_used_before + (VB2_WORKBUF_ALIGN - 1)) &
 		~(VB2_WORKBUF_ALIGN - 1),
 		"hash context offset");
 	TEST_EQ(sd->workbuf_hash_size, sizeof(struct vb2_digest_context),
 		"hash context size");
 	TEST_EQ(ctx.workbuf_used,
 		sd->workbuf_hash_offset + sd->workbuf_hash_size,
 		"hash uses workbuf");
 	TEST_EQ(sd->hash_tag,
 		sd->workbuf_preamble_offset + pre->hash_offset,
 		"hash signature offset");
 	TEST_EQ(sd->hash_remaining_size, mock_body_size, "hash remaining");

 	wb_used_before = ctx.workbuf_used;
 	TEST_SUCC(vb2api_init_hash2(&ctx, test_guid + 2, NULL),
 		  "init hash again");
 	TEST_EQ(ctx.workbuf_used, wb_used_before, "init hash reuses context");
 	TEST_EQ(sd->hash_tag,
 		sd->workbuf_preamble_offset + pre->hash_offset +
 		2 * mock_sig_size,
 		"hash signature offset 2");

 	reset_common_data(FOR_MISC);
 	TEST_EQ(vb2api_init_hash2(&ctx, test_guid + 3, &size),
 		VB2_ERROR_API_INIT_HASH_GUID, "init hash invalid guid");

 	reset_common_data(FOR_MISC);
 	sd->workbuf_preamble_size = 0;
 	TEST_EQ(vb2api_init_hash2(&ctx, test_guid, &size),
 		VB2_ERROR_API_INIT_HASH_PREAMBLE, "init hash preamble");

 	reset_common_data(FOR_MISC);
 	ctx.workbuf_used =
 		ctx.workbuf_size - sizeof(struct vb2_digest_context) + 8;
 	TEST_EQ(vb2api_init_hash2(&ctx, test_guid, &size),
 		VB2_ERROR_API_INIT_HASH_WORKBUF, "init hash workbuf");

 	reset_common_data(FOR_MISC);
 	sig->hash_alg = VB2_HASH_INVALID;
 	TEST_EQ(vb2api_init_hash2(&ctx, test_guid, &size),
 		VB2_ERROR_SHA_INIT_ALGORITHM, "init hash algorithm");
 }

 static void check_hash_tests(void)
 {
 	struct vb2_fw_preamble2 *pre;
 	struct vb2_signature2 *sig;
 	struct vb2_digest_context *dc;

 	reset_common_data(FOR_CHECK_HASH);
 	pre = (struct vb2_fw_preamble2 *)
 		(ctx.workbuf + sd->workbuf_preamble_offset);
 	sig = (struct vb2_signature2 *)((uint8_t *)pre + pre->hash_offset);
 	dc = (struct vb2_digest_context *)
 		(ctx.workbuf + sd->workbuf_hash_offset);

 	TEST_SUCC(vb2api_check_hash2(&ctx), "check hash good");

 	reset_common_data(FOR_CHECK_HASH);
 	sd->hash_tag = 0;
 	TEST_EQ(vb2api_check_hash2(&ctx),
 		VB2_ERROR_API_CHECK_HASH_TAG, "check hash tag");

 	reset_common_data(FOR_CHECK_HASH);
 	sd->workbuf_hash_size = 0;
 	TEST_EQ(vb2api_check_hash2(&ctx),
 		VB2_ERROR_API_CHECK_HASH_WORKBUF, "check hash no workbuf");

 	reset_common_data(FOR_CHECK_HASH);
 	sd->hash_remaining_size = 1;
 	TEST_EQ(vb2api_check_hash2(&ctx),
 		VB2_ERROR_API_CHECK_HASH_SIZE, "check hash size");

 	reset_common_data(FOR_CHECK_HASH);
 	ctx.workbuf_used = ctx.workbuf_size;
 	TEST_EQ(vb2api_check_hash2(&ctx),
 		VB2_ERROR_API_CHECK_HASH_WORKBUF_DIGEST, "check hash workbuf");

 	reset_common_data(FOR_CHECK_HASH);
 	dc->hash_alg = VB2_HASH_INVALID;
 	*((uint8_t *)sig + sig->sig_offset) ^= 0x55;
 	TEST_EQ(vb2api_check_hash2(&ctx),
 		VB2_ERROR_SHA_FINALIZE_ALGORITHM, "check hash finalize");

 	reset_common_data(FOR_CHECK_HASH);
 	*((uint8_t *)sig + sig->sig_offset) ^= 0x55;
 	TEST_EQ(vb2api_check_hash2(&ctx),
 		VB2_ERROR_API_CHECK_HASH_SIG, "check hash sig");
 }

 int main(int argc, char* argv[])
 {
 	phase3_tests();
 	init_hash_tests();
 	check_hash_tests();

 	return gTestSuccess ? 0 : 255;
 }
	/* Copyright (c) 2014 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 api library, new style structs
	*/

	#include <stdio.h>

	#include "2sysincludes.h"
	#include "2api.h"
	#include "2common.h"
	#include "2misc.h"
	#include "2nvstorage.h"
	#include "2rsa.h"
	#include "2secdata.h"

	#include "test_common.h"
	#include "vb2_convert_structs.h"

	/* Common context for tests */
	static uint8_t workbuf[VB2_WORKBUF_RECOMMENDED_SIZE]
	__attribute__ ((aligned (16)));
	static struct vb2_context ctx;
	static struct vb2_shared_data *sd;

	static const uint8_t mock_body[320] = "Mock body";
	static const int mock_body_size = sizeof(mock_body);
	static const int mock_algorithm = VB2_ALG_RSA2048_SHA256;
	static const int mock_hash_alg = VB2_HASH_SHA256;
	static int mock_sig_size;

	static const struct vb2_guid test_guid[4] = {
	{.raw = {0x11}},
	{.raw = {0x22}},
	{.raw = {0x33}},
	{.raw = {0x44}},
	};

	/* Mocked function data */
	static int retval_vb2_load_fw_keyblock;
	static int retval_vb2_load_fw_preamble;

	/* Type of test to reset for */
	enum reset_type {
	FOR_MISC,
	FOR_EXTEND_HASH,
	FOR_CHECK_HASH,
	};

	static void reset_common_data(enum reset_type t)
	{
	struct vb2_fw_preamble2 *pre;
	struct vb2_signature2 *sig;
	uint32_t sig_offset;

	int i;

	memset(workbuf, 0xaa, sizeof(workbuf));

	memset(&ctx, 0, sizeof(ctx));
	ctx.workbuf = workbuf;
	ctx.workbuf_size = sizeof(workbuf);

	vb2_init_context(&ctx);
	sd = vb2_get_sd(&ctx);

	vb2_nv_init(&ctx);

	vb2_secdata_create(&ctx);
	vb2_secdata_init(&ctx);

	retval_vb2_load_fw_keyblock = VB2_SUCCESS;
	retval_vb2_load_fw_preamble = VB2_SUCCESS;

	sd->workbuf_preamble_offset = ctx.workbuf_used;
	pre = (struct vb2_fw_preamble2 *)
	(ctx.workbuf + sd->workbuf_preamble_offset);
	pre->hash_count = 3;
	pre->hash_offset = sig_offset = sizeof(*pre);

	for (i = 0; i < 3; i++) {
	sig = vb2_create_hash_sig(mock_body,
	mock_body_size - 16 * i,
	mock_hash_alg);
	memcpy(&sig->guid, test_guid + i, sizeof(sig->guid));
	memcpy((uint8_t *)pre + sig_offset, sig, sig->c.total_size);
	sig_offset += sig->c.total_size;
	mock_sig_size = sig->c.total_size;
	free(sig);
	}

	sd->workbuf_preamble_size = sig_offset;
	ctx.workbuf_used = sd->workbuf_preamble_offset
	+ sd->workbuf_preamble_size;

	if (t == FOR_EXTEND_HASH \|\| t == FOR_CHECK_HASH)
	vb2api_init_hash2(&ctx, test_guid, NULL);

	if (t == FOR_CHECK_HASH)
	vb2api_extend_hash(&ctx, mock_body, mock_body_size);
	};

	/* Mocked functions */

	int vb2_load_fw_keyblock2(struct vb2_context *ctx)
	{
	return retval_vb2_load_fw_keyblock;
	}

	int vb2_load_fw_preamble2(struct vb2_context *ctx)
	{
	return retval_vb2_load_fw_preamble;
	}

	/* Tests */

	static void phase3_tests(void)
	{
	reset_common_data(FOR_MISC);
	TEST_SUCC(vb2api_fw_phase3_2(&ctx), "phase3 good");

	reset_common_data(FOR_MISC);
	retval_vb2_load_fw_keyblock = VB2_ERROR_MOCK;
	TEST_EQ(vb2api_fw_phase3_2(&ctx), VB2_ERROR_MOCK, "phase3 keyblock");
	TEST_EQ(vb2_nv_get(&ctx, VB2_NV_RECOVERY_REQUEST),
	VB2_RECOVERY_RO_INVALID_RW, " recovery reason");

	reset_common_data(FOR_MISC);
	retval_vb2_load_fw_preamble = VB2_ERROR_MOCK;
	TEST_EQ(vb2api_fw_phase3_2(&ctx), VB2_ERROR_MOCK, "phase3 keyblock");
	TEST_EQ(vb2_nv_get(&ctx, VB2_NV_RECOVERY_REQUEST),
	VB2_RECOVERY_RO_INVALID_RW, " recovery reason");
	}

	static void init_hash_tests(void)
	{
	struct vb2_fw_preamble2 *pre;
	struct vb2_signature2 *sig;
	int wb_used_before;
	uint32_t size;

	reset_common_data(FOR_MISC);
	pre = (struct vb2_fw_preamble2 *)
	(ctx.workbuf + sd->workbuf_preamble_offset);
	sig = (struct vb2_signature2 )((uint8_t )pre + pre->hash_offset);

	wb_used_before = ctx.workbuf_used;
	TEST_SUCC(vb2api_init_hash2(&ctx, test_guid, &size),
	"init hash good");
	TEST_EQ(sd->workbuf_hash_offset,
	(wb_used_before + (VB2_WORKBUF_ALIGN - 1)) &
	~(VB2_WORKBUF_ALIGN - 1),
	"hash context offset");
	TEST_EQ(sd->workbuf_hash_size, sizeof(struct vb2_digest_context),
	"hash context size");
	TEST_EQ(ctx.workbuf_used,
	sd->workbuf_hash_offset + sd->workbuf_hash_size,
	"hash uses workbuf");
	TEST_EQ(sd->hash_tag,
	sd->workbuf_preamble_offset + pre->hash_offset,
	"hash signature offset");
	TEST_EQ(sd->hash_remaining_size, mock_body_size, "hash remaining");

	wb_used_before = ctx.workbuf_used;
	TEST_SUCC(vb2api_init_hash2(&ctx, test_guid + 2, NULL),
	"init hash again");
	TEST_EQ(ctx.workbuf_used, wb_used_before, "init hash reuses context");
	TEST_EQ(sd->hash_tag,
	sd->workbuf_preamble_offset + pre->hash_offset +
	2 * mock_sig_size,
	"hash signature offset 2");

	reset_common_data(FOR_MISC);
	TEST_EQ(vb2api_init_hash2(&ctx, test_guid + 3, &size),
	VB2_ERROR_API_INIT_HASH_GUID, "init hash invalid guid");

	reset_common_data(FOR_MISC);
	sd->workbuf_preamble_size = 0;
	TEST_EQ(vb2api_init_hash2(&ctx, test_guid, &size),
	VB2_ERROR_API_INIT_HASH_PREAMBLE, "init hash preamble");

	reset_common_data(FOR_MISC);
	ctx.workbuf_used =
	ctx.workbuf_size - sizeof(struct vb2_digest_context) + 8;
	TEST_EQ(vb2api_init_hash2(&ctx, test_guid, &size),
	VB2_ERROR_API_INIT_HASH_WORKBUF, "init hash workbuf");

	reset_common_data(FOR_MISC);
	sig->hash_alg = VB2_HASH_INVALID;
	TEST_EQ(vb2api_init_hash2(&ctx, test_guid, &size),
	VB2_ERROR_SHA_INIT_ALGORITHM, "init hash algorithm");
	}

	static void check_hash_tests(void)
	{
	struct vb2_fw_preamble2 *pre;
	struct vb2_signature2 *sig;
	struct vb2_digest_context *dc;

	reset_common_data(FOR_CHECK_HASH);
	pre = (struct vb2_fw_preamble2 *)
	(ctx.workbuf + sd->workbuf_preamble_offset);
	sig = (struct vb2_signature2 )((uint8_t )pre + pre->hash_offset);
	dc = (struct vb2_digest_context *)
	(ctx.workbuf + sd->workbuf_hash_offset);

	TEST_SUCC(vb2api_check_hash2(&ctx), "check hash good");

	reset_common_data(FOR_CHECK_HASH);
	sd->hash_tag = 0;
	TEST_EQ(vb2api_check_hash2(&ctx),
	VB2_ERROR_API_CHECK_HASH_TAG, "check hash tag");

	reset_common_data(FOR_CHECK_HASH);
	sd->workbuf_hash_size = 0;
	TEST_EQ(vb2api_check_hash2(&ctx),
	VB2_ERROR_API_CHECK_HASH_WORKBUF, "check hash no workbuf");

	reset_common_data(FOR_CHECK_HASH);
	sd->hash_remaining_size = 1;
	TEST_EQ(vb2api_check_hash2(&ctx),
	VB2_ERROR_API_CHECK_HASH_SIZE, "check hash size");

	reset_common_data(FOR_CHECK_HASH);
	ctx.workbuf_used = ctx.workbuf_size;
	TEST_EQ(vb2api_check_hash2(&ctx),
	VB2_ERROR_API_CHECK_HASH_WORKBUF_DIGEST, "check hash workbuf");

	reset_common_data(FOR_CHECK_HASH);
	dc->hash_alg = VB2_HASH_INVALID;
	((uint8_t )sig + sig->sig_offset) ^= 0x55;
	TEST_EQ(vb2api_check_hash2(&ctx),
	VB2_ERROR_SHA_FINALIZE_ALGORITHM, "check hash finalize");

	reset_common_data(FOR_CHECK_HASH);
	((uint8_t )sig + sig->sig_offset) ^= 0x55;
	TEST_EQ(vb2api_check_hash2(&ctx),
	VB2_ERROR_API_CHECK_HASH_SIG, "check hash sig");
	}

	int main(int argc, char* argv[])
	{
	phase3_tests();
	init_hash_tests();
	check_hash_tests();

	return gTestSuccess ? 0 : 255;
	}