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

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}"

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


# Startup the TPM
RES=$(swtpm_cmd_tx "${SWTPM_INTERFACE}" '\x00\xC1\x00\x00\x00\x0C\x00\x00\x00\x99\x00\x01')
exp=' 00 c4 00 00 00 0a 00 00 00 00'
if [ "$RES" != "$exp" ]; then
	echo "Error: Did not get expected result from TPM_Startup(ST_Clear)"
	echo "expected: $exp"
	echo "received: $RES"
	exit 1
fi

# Reset PCR 20
RES=$(swtpm_cmd_tx "${SWTPM_INTERFACE}" '\x00\xC1\x00\x00\x00\x0F\x00\x00\x00\xC8\x00\x03\x00\x00\x10')
exp=' 00 c4 00 00 00 0a 00 00 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

# 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