/* Test displaying debug info */
static void DebugInfoTest(void)
{
char hwid[VB_REGION_HWID_LEN];
int i;
/* Recovery string should be non-null for any code */
for (i = 0; i < 0x100; i++)
TEST_PTR_NEQ(RecoveryReasonString(i), NULL, "Non-null reason");
/* HWID should come from the gbb */
ResetMocks();
VbRegionReadHWID(&cparams, hwid, sizeof(hwid));
TEST_EQ(strcmp(hwid, "Test HWID"), 0, "HWID");
VbApiKernelFree(&cparams);
ResetMocks();
cparams.gbb_size = 0;
VbRegionReadHWID(&cparams, hwid, sizeof(hwid));
TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID bad gbb");
VbApiKernelFree(&cparams);
ResetMocks();
cparams.gbb->hwid_size = 0;
VbRegionReadHWID(&cparams, hwid, sizeof(hwid));
TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID missing");
VbApiKernelFree(&cparams);
ResetMocks();
cparams.gbb->hwid_offset = cparams.gbb_size + 1;
VbRegionReadHWID(&cparams, hwid, sizeof(hwid));
TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID past end");
VbApiKernelFree(&cparams);
ResetMocks();
cparams.gbb->hwid_size = cparams.gbb_size;
VbRegionReadHWID(&cparams, hwid, sizeof(hwid));
TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID overflow");
VbApiKernelFree(&cparams);
/* Display debug info */
ResetMocks();
VbDisplayDebugInfo(&cparams, &vnc);
TEST_NEQ(*debug_info, '\0', "Some debug info was displayed");
VbApiKernelFree(&cparams);
}
/* Test displaying debug info */
static void DebugInfoTest(void)
{
char hwid[256];
int i;
/* Recovery string should be non-null for any code */
for (i = 0; i < 0x100; i++)
TEST_PTR_NEQ(RecoveryReasonString(i), NULL, "Non-null reason");
/* HWID should come from the gbb */
ResetMocks();
VbGbbReadHWID(&ctx, hwid, sizeof(hwid));
TEST_EQ(strcmp(hwid, "Test HWID"), 0, "HWID");
ResetMocks();
sd->gbb_size = 0;
VbGbbReadHWID(&ctx, hwid, sizeof(hwid));
TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID bad gbb");
ResetMocks();
sd->gbb->hwid_size = 0;
VbGbbReadHWID(&ctx, hwid, sizeof(hwid));
TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID missing");
ResetMocks();
sd->gbb->hwid_offset = sd->gbb_size + 1;
VbGbbReadHWID(&ctx, hwid, sizeof(hwid));
TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID past end");
ResetMocks();
sd->gbb->hwid_size = sd->gbb_size;
VbGbbReadHWID(&ctx, hwid, sizeof(hwid));
TEST_EQ(strcmp(hwid, "{INVALID}"), 0, "HWID overflow");
/* Display debug info */
ResetMocks();
VbDisplayDebugInfo(&ctx);
TEST_NEQ(*debug_info, '\0', "Some debug info was displayed");
}
VbError_t VbDisplayDebugInfo(VbCommonParams *cparams, VbNvContext *vncptr)
{
VbSharedDataHeader *shared =
(VbSharedDataHeader *)cparams->shared_data_blob;
GoogleBinaryBlockHeader *gbb = cparams->gbb;
char buf[DEBUG_INFO_SIZE] = "";
char sha1sum[SHA1_DIGEST_SIZE * 2 + 1];
char hwid[256];
uint32_t used = 0;
VbPublicKey *key;
VbError_t ret;
uint32_t i;
/* Redisplay current screen to overwrite any previous debug output */
VbDisplayScreen(cparams, disp_current_screen, 1, vncptr);
/* Add hardware ID */
VbRegionReadHWID(cparams, hwid, sizeof(hwid));
used += StrnAppend(buf + used, "HWID: ", DEBUG_INFO_SIZE - used);
used += StrnAppend(buf + used, hwid, DEBUG_INFO_SIZE - used);
/* Add recovery reason */
used += StrnAppend(buf + used,
"\nrecovery_reason: 0x", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
shared->recovery_reason, 16, 2);
used += StrnAppend(buf + used, " ", DEBUG_INFO_SIZE - used);
used += StrnAppend(buf + used,
RecoveryReasonString(shared->recovery_reason),
DEBUG_INFO_SIZE - used);
/* Add VbSharedData flags */
used += StrnAppend(buf + used, "\nVbSD.flags: 0x", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
shared->flags, 16, 8);
/* Add raw contents of VbNvStorage */
used += StrnAppend(buf + used, "\nVbNv.raw:", DEBUG_INFO_SIZE - used);
for (i = 0; i < VBNV_BLOCK_SIZE; i++) {
used += StrnAppend(buf + used, " ", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
vncptr->raw[i], 16, 2);
}
/* Add dev_boot_usb flag */
VbNvGet(vncptr, VBNV_DEV_BOOT_USB, &i);
used += StrnAppend(buf + used, "\ndev_boot_usb: ", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 10, 0);
/* Add dev_boot_legacy flag */
VbNvGet(vncptr, VBNV_DEV_BOOT_LEGACY, &i);
used += StrnAppend(buf + used,
"\ndev_boot_legacy: ", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 10, 0);
/* Add dev_boot_signed_only flag */
VbNvGet(vncptr, VBNV_DEV_BOOT_SIGNED_ONLY, &i);
used += StrnAppend(buf + used, "\ndev_boot_signed_only: ",
DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 10, 0);
/* Add TPM versions */
used += StrnAppend(buf + used, "\nTPM: fwver=0x", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
shared->fw_version_tpm, 16, 8);
used += StrnAppend(buf + used, " kernver=0x", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
shared->kernel_version_tpm, 16, 8);
/* Add GBB flags */
used += StrnAppend(buf + used, "\ngbb.flags: 0x", DEBUG_INFO_SIZE - used);
if (gbb->major_version == GBB_MAJOR_VER && gbb->minor_version >= 1) {
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
gbb->flags, 16, 8);
} else {
used += StrnAppend(buf + used,
"0 (default)", DEBUG_INFO_SIZE - used);
}
/* Add sha1sum for Root & Recovery keys */
ret = VbGbbReadRootKey(cparams, &key);
if (!ret) {
FillInSha1Sum(sha1sum, key);
VbExFree(key);
used += StrnAppend(buf + used, "\ngbb.rootkey: ",
DEBUG_INFO_SIZE - used);
used += StrnAppend(buf + used, sha1sum,
DEBUG_INFO_SIZE - used);
}
ret = VbGbbReadRecoveryKey(cparams, &key);
if (!ret) {
FillInSha1Sum(sha1sum, key);
VbExFree(key);
used += StrnAppend(buf + used, "\ngbb.recovery_key: ",
DEBUG_INFO_SIZE - used);
used += StrnAppend(buf + used, sha1sum,
DEBUG_INFO_SIZE - used);
}
/* If we're in dev-mode, show the kernel subkey that we expect, too. */
if (0 == shared->recovery_reason) {
FillInSha1Sum(sha1sum, &shared->kernel_subkey);
used += StrnAppend(buf + used,
"\nkernel_subkey: ", DEBUG_INFO_SIZE - used);
used += StrnAppend(buf + used, sha1sum, DEBUG_INFO_SIZE - used);
}
/* Make sure we finish with a newline */
used += StrnAppend(buf + used, "\n", DEBUG_INFO_SIZE - used);
/* TODO: add more interesting data:
* - Information on current disks */
buf[DEBUG_INFO_SIZE - 1] = '\0';
return VbExDisplayDebugInfo(buf);
}
