#!/bin/bash

# For the license, see the LICENSE file in the root directory.
#set -x

ROOT=${abs_top_builddir:-$(pwd)/..}
TESTDIR=${abs_top_testdir:-$(dirname "$0")}

VTPM_NAME="vtpm-test-tpm2-locality"
SWTPM_DEV_NAME="/dev/${VTPM_NAME}"
TPM_PATH="$(mktemp -d)" || exit 1
STATE_FILE=$TPM_PATH/tpm2-00.permall
VOLATILE_STATE_FILE=$TPM_PATH/tpm2-00.volatilestate
SWTPM_INTERFACE=${SWTPM_INTERFACE:-cuse}
SWTPM_CMD_UNIX_PATH=${TPM_PATH}/unix-cmd.sock
SWTPM_CTRL_UNIX_PATH=${TPM_PATH}/unix-ctrl.sock

function cleanup()
{
	pid=${SWTPM_PID}
	if [ -n "$pid" ]; then
		kill_quiet -9 "$pid"
	fi
	rm -rf "$TPM_PATH"
}

trap "cleanup" EXIT

[ "${SWTPM_INTERFACE}" == "cuse" ] && source "${TESTDIR}/test_cuse"
source "${TESTDIR}/common"

rm -f "$STATE_FILE" "$VOLATILE_STATE_FILE" 2>/dev/null

TPM_PATH=$TPM_PATH run_swtpm "${SWTPM_INTERFACE}" --tpm2

display_processes_by_name "$SWTPM"

if ! kill_quiet -0 "${SWTPM_PID}"; then
	echo "Error: ${SWTPM_INTERFACE} TPM did not start."
	exit 1
fi

# Init the TPM
if ! run_swtpm_ioctl "${SWTPM_INTERFACE}" -i; then
	echo "Error: Could not initialize the ${SWTPM_INTERFACE} TPM."
	exit 1
fi

if ! kill_quiet -0 "${SWTPM_PID}" 2>/dev/null; then
	echo "Error: ${SWTPM_INTERFACE} TPM not running anymore after INIT."
	exit 1
fi

# Set locality 4 on the TPM
if ! run_swtpm_ioctl "${SWTPM_INTERFACE}" -l 4; then
	echo "Error: ${SWTPM_INTERFACE} TPM did not accept locality 4."
	exit 1
fi

# Set illegal locality 5 on the TPM
if run_swtpm_ioctl "${SWTPM_INTERFACE}" -l 5; then
	echo "Error: ${SWTPM_INTERFACE} TPM accepted locality 5."
	exit 1
fi

# Set locality 0 on the TPM
if ! run_swtpm_ioctl "${SWTPM_INTERFACE}" -l 0; then
	echo "Error: ${SWTPM_INTERFACE} TPM did not accept locality 0."
	exit 1
fi

# In locality 2 we can reset PCR 20
if ! run_swtpm_ioctl "${SWTPM_INTERFACE}" -l 2; then
	echo "Error: ${SWTPM_INTERFACE} TPM did not accept locality 2."
	exit 1
fi

# Need to set locality 0 or 3 for TPM2_Startup to work...
# TPM_Startup for TPM 1.2 worked in all localities
if ! run_swtpm_ioctl "${SWTPM_INTERFACE}" -l 3; then
	echo "Error: ${SWTPM_INTERFACE} TPM did not accept locality 3."
	exit 1
fi

# Startup the TPM
RES=$(swtpm_cmd_tx "${SWTPM_INTERFACE}" '\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00')
exp=' 80 01 00 00 00 0a 00 00 00 00'
if [ "$RES" != "$exp" ]; then
	echo "Error: Did not get expected result from TPM2_Startup(SU_Clear)"
	echo "expected: $exp"
	echo "received: $RES"
	exit 1
fi

# In locality 2 we can reset PCR 20
if ! run_swtpm_ioctl "${SWTPM_INTERFACE}" -l 2; then
	echo "Error: ${SWTPM_INTERFACE} TPM did not accept locality 2."
	exit 1
fi

# Reset PCR 20
RES=$(swtpm_cmd_tx "${SWTPM_INTERFACE}" '\x80\x02\x00\x00\x00\x1b\x00\x00\x01\x3d\x00\x00\x00\x14\x00\x00\x00\x09\x40\x00\x00\x09\x00\x00\x00\x00\x00')
exp=' 80 02 00 00 00 13 00 00 00 00 00 00 00 00 00 00 01 00 00'
if [ "$RES" != "$exp" ]; then
	echo "Error: Could not reset PCR 20 in locality 2"
	echo "expected: $exp"
	echo "received: $RES"
	exit 1
fi

# In locality 1 we can NOT reset PCR 20
if ! run_swtpm_ioctl "${SWTPM_INTERFACE}" -l 1; then
	echo "Error: ${SWTPM_INTERFACE} TPM did not accept locality 1."
	exit 1
fi

# Reset PCR 20
RES=$(swtpm_cmd_tx "${SWTPM_INTERFACE}" '\x80\x02\x00\x00\x00\x1b\x00\x00\x01\x3d\x00\x00\x00\x14\x00\x00\x00\x09\x40\x00\x00\x09\x00\x00\x00\x00\x00')
exp=' 80 01 00 00 00 0a 00 00 09 07'
if [ "$RES" != "$exp" ]; then
	echo "Error: Could reset PCR 20 in locality 1"
	echo "expected: $exp"
	echo "received: $RES"
	exit 1
fi

# Shut down TPM
if ! run_swtpm_ioctl "${SWTPM_INTERFACE}" -s; then
	echo "Error: Could not shut down the ${SWTPM_INTERFACE} TPM."
	exit 1
fi

if wait_process_gone ${SWTPM_PID} 4; then
	echo "Error: ${SWTPM_INTERFACE} TPM should not be running anymore."
	exit 1
fi

if [ ! -e "$STATE_FILE" ]; then
	echo "Error: TPM state file $STATE_FILE does not exist."
	exit 1
fi

echo "OK"

exit 0