| /* 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 firmware 2common.c |
| */ |
| |
| #include "2sysincludes.h" |
| #include "2common.h" |
| |
| #include "test_common.h" |
| |
| /** |
| * Test alignment functions |
| */ |
| static void test_align(void) |
| { |
| uint64_t buf[4]; |
| uint8_t *p0, *ptr; |
| uint32_t size; |
| |
| /* Already aligned */ |
| p0 = (uint8_t *)buf; |
| ptr = p0; |
| size = 16; |
| TEST_SUCC(vb2_align(&ptr, &size, 4, 16), "vb2_align() aligned"); |
| TEST_EQ(vb2_offset_of(p0, ptr), 0, "ptr"); |
| TEST_EQ(size, 16, " size"); |
| TEST_EQ(vb2_align(&ptr, &size, 4, 17), |
| VB2_ERROR_ALIGN_SIZE, "vb2_align() small"); |
| |
| /* Offset */ |
| ptr = p0 + 1; |
| size = 15; |
| TEST_SUCC(vb2_align(&ptr, &size, 4, 12), "vb2_align() offset"); |
| TEST_EQ(vb2_offset_of(p0, ptr), 4, "ptr"); |
| TEST_EQ(size, 12, " size"); |
| |
| /* Offset, now too small */ |
| ptr = p0 + 1; |
| size = 15; |
| TEST_EQ(vb2_align(&ptr, &size, 4, 15), |
| VB2_ERROR_ALIGN_SIZE, "vb2_align() offset small"); |
| |
| /* Offset, too small even to align */ |
| ptr = p0 + 1; |
| size = 1; |
| TEST_EQ(vb2_align(&ptr, &size, 4, 1), |
| VB2_ERROR_ALIGN_BIGGER_THAN_SIZE, "vb2_align() offset tiny"); |
| } |
| |
| /** |
| * Test work buffer functions |
| */ |
| static void test_workbuf(void) |
| { |
| uint64_t buf[8]; |
| uint8_t *p0 = (uint8_t *)buf, *ptr; |
| struct vb2_workbuf wb; |
| |
| /* Init */ |
| vb2_workbuf_init(&wb, p0, 32); |
| TEST_EQ(vb2_offset_of(p0, wb.buf), 0, "Workbuf init aligned"); |
| TEST_EQ(wb.size, 32, " size"); |
| |
| vb2_workbuf_init(&wb, p0 + 4, 32); |
| TEST_EQ(vb2_offset_of(p0, wb.buf), 8, "Workbuf init unaligned"); |
| TEST_EQ(wb.size, 28, " size"); |
| |
| vb2_workbuf_init(&wb, p0 + 2, 5); |
| TEST_EQ(wb.size, 0, "Workbuf init tiny unaligned size"); |
| |
| /* Alloc rounds up */ |
| vb2_workbuf_init(&wb, p0, 32); |
| ptr = vb2_workbuf_alloc(&wb, 22); |
| TEST_EQ(vb2_offset_of(p0, ptr), 0, "Workbuf alloc"); |
| TEST_EQ(vb2_offset_of(p0, wb.buf), 24, " buf"); |
| TEST_EQ(wb.size, 8, " size"); |
| |
| vb2_workbuf_init(&wb, p0, 32); |
| TEST_PTR_EQ(vb2_workbuf_alloc(&wb, 33), NULL, "Workbuf alloc too big"); |
| |
| /* Free reverses alloc */ |
| vb2_workbuf_init(&wb, p0, 32); |
| vb2_workbuf_alloc(&wb, 22); |
| vb2_workbuf_free(&wb, 22); |
| TEST_EQ(vb2_offset_of(p0, wb.buf), 0, "Workbuf free buf"); |
| TEST_EQ(wb.size, 32, " size"); |
| |
| /* Realloc keeps same pointer as alloc */ |
| vb2_workbuf_init(&wb, p0, 32); |
| vb2_workbuf_alloc(&wb, 6); |
| ptr = vb2_workbuf_realloc(&wb, 6, 21); |
| TEST_EQ(vb2_offset_of(p0, ptr), 0, "Workbuf realloc"); |
| TEST_EQ(vb2_offset_of(p0, wb.buf), 24, " buf"); |
| TEST_EQ(wb.size, 8, " size"); |
| } |
| |
| /* |
| * Test struct packing for vboot_struct.h structs which are passed between |
| * firmware and OS, or passed between different phases of firmware. |
| */ |
| static void test_struct_packing(void) |
| { |
| TEST_EQ(EXPECTED_VBPUBLICKEY_SIZE, sizeof(struct vb2_packed_key), |
| "sizeof(vb2_packed_key)"); |
| TEST_EQ(EXPECTED_VBSIGNATURE_SIZE, sizeof(struct vb2_signature), |
| "sizeof(vb2_signature)"); |
| TEST_EQ(EXPECTED_VB2KEYBLOCKHEADER_SIZE, |
| sizeof(struct vb2_keyblock), |
| "sizeof(VbKeyBlockHeader)"); |
| TEST_EQ(EXPECTED_VB2FIRMWAREPREAMBLEHEADER2_1_SIZE, |
| sizeof(struct vb2_fw_preamble), |
| "sizeof(vb2_fw_preamble)"); |
| } |
| |
| /** |
| * Helper functions not dependent on specific key sizes |
| */ |
| static void test_helper_functions(void) |
| { |
| { |
| uint8_t *p = (uint8_t *)test_helper_functions; |
| TEST_EQ((int)vb2_offset_of(p, p), 0, "vb2_offset_of() equal"); |
| TEST_EQ((int)vb2_offset_of(p, p+10), 10, |
| "vb2_offset_of() positive"); |
| } |
| |
| { |
| struct vb2_packed_key k = {.key_offset = sizeof(k)}; |
| TEST_EQ((int)vb2_offset_of(&k, vb2_packed_key_data(&k)), |
| sizeof(k), "vb2_packed_key_data() adjacent"); |
| } |
| |
| { |
| struct vb2_packed_key k = {.key_offset = 123}; |
| TEST_EQ((int)vb2_offset_of(&k, vb2_packed_key_data(&k)), 123, |
| "vb2_packed_key_data() spaced"); |
| } |
| |
| { |
| struct vb2_signature s = {.sig_offset = sizeof(s)}; |
| TEST_EQ((int)vb2_offset_of(&s, vb2_signature_data(&s)), |
| sizeof(s), "vb2_signature_data() adjacent"); |
| } |
| |
| { |
| struct vb2_signature s = {.sig_offset = 123}; |
| TEST_EQ((int)vb2_offset_of(&s, vb2_signature_data(&s)), 123, |
| "vb2_signature_data() spaced"); |
| } |
| |
| { |
| uint8_t *p = (uint8_t *)test_helper_functions; |
| TEST_SUCC(vb2_verify_member_inside(p, 20, p, 6, 11, 3), |
| "MemberInside ok 1"); |
| TEST_SUCC(vb2_verify_member_inside(p, 20, p+4, 4, 8, 4), |
| "MemberInside ok 2"); |
| TEST_EQ(vb2_verify_member_inside(p, 20, p-4, 4, 8, 4), |
| VB2_ERROR_INSIDE_MEMBER_OUTSIDE, |
| "MemberInside member before parent"); |
| TEST_EQ(vb2_verify_member_inside(p, 20, p+20, 4, 8, 4), |
| VB2_ERROR_INSIDE_MEMBER_OUTSIDE, |
| "MemberInside member after parent"); |
| TEST_EQ(vb2_verify_member_inside(p, 20, p, 21, 0, 0), |
| VB2_ERROR_INSIDE_MEMBER_OUTSIDE, |
| "MemberInside member too big"); |
| TEST_EQ(vb2_verify_member_inside(p, 20, p, 4, 21, 0), |
| VB2_ERROR_INSIDE_DATA_OUTSIDE, |
| "MemberInside data after parent"); |
| TEST_EQ(vb2_verify_member_inside(p, 20, p, 4, SIZE_MAX, 0), |
| VB2_ERROR_INSIDE_DATA_OUTSIDE, |
| "MemberInside data before parent"); |
| TEST_EQ(vb2_verify_member_inside(p, 20, p, 4, 4, 17), |
| VB2_ERROR_INSIDE_DATA_OUTSIDE, |
| "MemberInside data too big"); |
| TEST_EQ(vb2_verify_member_inside(p, -8, p, 12, 0, 0), |
| VB2_ERROR_INSIDE_PARENT_WRAPS, |
| "MemberInside wraparound 1"); |
| TEST_EQ(vb2_verify_member_inside(p, 20, p, -8, 0, 0), |
| VB2_ERROR_INSIDE_MEMBER_WRAPS, |
| "MemberInside wraparound 2"); |
| TEST_EQ(vb2_verify_member_inside(p, 20, p, 4, 0, -8), |
| VB2_ERROR_INSIDE_DATA_WRAPS, |
| "MemberInside wraparound 3"); |
| } |
| |
| { |
| struct vb2_packed_key k = {.key_offset = sizeof(k), |
| .key_size = 128}; |
| TEST_SUCC(vb2_verify_packed_key_inside(&k, sizeof(k)+128, &k), |
| "PublicKeyInside ok 1"); |
| TEST_SUCC(vb2_verify_packed_key_inside(&k - 1, |
| 2*sizeof(k)+128, &k), |
| "PublicKeyInside ok 2"); |
| TEST_EQ(vb2_verify_packed_key_inside(&k, 128, &k), |
| VB2_ERROR_INSIDE_DATA_OUTSIDE, |
| "PublicKeyInside key too big"); |
| } |
| |
| { |
| struct vb2_packed_key k = {.key_offset = 100, |
| .key_size = 4}; |
| TEST_EQ(vb2_verify_packed_key_inside(&k, 99, &k), |
| VB2_ERROR_INSIDE_DATA_OUTSIDE, |
| "PublicKeyInside offset too big"); |
| } |
| |
| { |
| struct vb2_signature s = {.sig_offset = sizeof(s), |
| .sig_size = 128}; |
| TEST_SUCC(vb2_verify_signature_inside(&s, sizeof(s)+128, &s), |
| "SignatureInside ok 1"); |
| TEST_SUCC(vb2_verify_signature_inside(&s - 1, |
| 2*sizeof(s)+128, &s), |
| "SignatureInside ok 2"); |
| TEST_EQ(vb2_verify_signature_inside(&s, 128, &s), |
| VB2_ERROR_INSIDE_DATA_OUTSIDE, |
| "SignatureInside sig too big"); |
| } |
| |
| { |
| struct vb2_signature s = {.sig_offset = 100, |
| .sig_size = 4}; |
| TEST_EQ(vb2_verify_signature_inside(&s, 99, &s), |
| VB2_ERROR_INSIDE_DATA_OUTSIDE, |
| "SignatureInside offset too big"); |
| } |
| } |
| |
| int main(int argc, char* argv[]) |
| { |
| test_align(); |
| test_workbuf(); |
| test_struct_packing(); |
| test_helper_functions(); |
| |
| return gTestSuccess ? 0 : 255; |
| } |