#!/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-avoid-da-lockout"
SWTPM_DEV_NAME="/dev/${VTPM_NAME}"
TPM_PATH="$(mktemp -d)" || exit 1
LOG_FILE=$TPM_PATH/tpm-00.log
SWTPM_CMD_UNIX_PATH=${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 "${TESTDIR}/common"
source "${TESTDIR}/test_common"

TPM_PATH=$TPM_PATH run_swtpm "${SWTPM_INTERFACE}" \
	--tpm2 \
	--log "file=$LOG_FILE,level=20" \
	--flags not-need-init,startup-clear

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

# Define password-protected NV space with DA attribute set: tssnvdefinespace -ha 01000000 -hi o -pwdn test -sz 1 -at da
cmd='\x80\x02\x00\x00\x00\x31\x00\x00\x01\x2a\x40\x00\x00\x01\x00\x00\x00\x09\x40\x00\x00\x09\x00\x00\x00\x00\x00\x00\x04\x74\x65\x73\x74\x00\x0e\x01\x00\x00\x00\x00\x0b\x00\x04\x00\x04\x00\x00\x00\x01'
RES=$(swtpm_cmd_tx "${SWTPM_INTERFACE}" ${cmd})
exp=' 80 02 00 00 00 13 00 00 00 00 00 00 00 00 00 00 01 00 00'
if [ "$RES" != "$exp" ]; then
	echo "Error: Did not get expected result from TPM2_NV_DefineSpace"
	echo "expected: $exp"
	echo "received: $RES"
	exit 1
fi

# Write to NV space without password: tssnvwrite -ha 01000000 -ic A
cmd='\x80\x02\x00\x00\x00\x24\x00\x00\x01\x37\x01\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x09\x40\x00\x00\x09\x00\x00\x00\x00\x00\x00\x01\x41\x00\x00'
RES=$(swtpm_cmd_tx "${SWTPM_INTERFACE}" ${cmd})
exp=' 80 01 00 00 00 0a 00 00 09 22'
if [ "$RES" != "$exp" ]; then
	echo "Error: Did not get expected result from TPM2_NV_Write"
	echo "expected: $exp"
	echo "received: $RES"
	exit 1
fi

# The TPM_PT_LOCKOUT_COUNTER must be 0 now: tssgetcapability -cap 6 -pr 0x20e -pc 1
cmd='\x80\x01\x00\x00\x00\x16\x00\x00\x01\x7a\x00\x00\x00\x06\x00\x00\x02\x0e\x00\x00\x00\x01'
RES=$(swtpm_cmd_tx "${SWTPM_INTERFACE}" ${cmd})
exp=' 80 01 00 00 00 1b 00 00 00 00 01 00 00 00 06 00 00 00 01 00 00 02 0e 00 00 00 00'
if [ "$RES" != "$exp" ]; then
	echo "Error: Did not get expected result from TPM2_GetCapability(TPM_PT_LOCKOUT_COUNTER)"
	echo "expected: $exp"
	echo "received: $RES"
	exit 1
fi

# Abruptly init the TPM: swtpm will internally send TPM2_Shutdown()
if ! run_swtpm_ioctl "${SWTPM_INTERFACE}" -i; then
	echo "Error: Could not initialize the ${SWTPM_INTERFACE} TPM."
	exit 1
fi

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

# The TPM_PT_LOCKOUT_COUNTER must still be '0' now: tssgetcapability -cap 6 -pr 0x20e -pc 1
# Without swtpm sending TPM2_Shutdown, it would be '1' now
cmd='\x80\x01\x00\x00\x00\x16\x00\x00\x01\x7a\x00\x00\x00\x06\x00\x00\x02\x0e\x00\x00\x00\x01'
RES=$(swtpm_cmd_tx "${SWTPM_INTERFACE}" ${cmd})
exp=' 80 01 00 00 00 1b 00 00 00 00 01 00 00 00 06 00 00 00 01 00 00 02 0e 00 00 00 00'
if [ "$RES" != "$exp" ]; then
	echo "Error: Did not get expected result from TPM2_GetCapability(TPM_PT_LOCKOUT_COUNTER)"
	echo "expected: $exp"
	echo "received: $RES"
	exit 1
fi

# Again write to NV space without password: tssnvwrite -ha 01000000 -ic A
cmd='\x80\x02\x00\x00\x00\x24\x00\x00\x01\x37\x01\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x09\x40\x00\x00\x09\x00\x00\x00\x00\x00\x00\x01\x41\x00\x00'
RES=$(swtpm_cmd_tx "${SWTPM_INTERFACE}" ${cmd})
exp=' 80 01 00 00 00 0a 00 00 09 22'
if [ "$RES" != "$exp" ]; then
	echo "Error: Did not get expected result from TPM2_NV_Write"
	echo "expected: $exp"
	echo "received: $RES"
	exit 1
fi

# CMD_STOP: swtpm will internally send TPM2_Shutdown()
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

TPM_PATH=$TPM_PATH run_swtpm "${SWTPM_INTERFACE}" \
	--tpm2 \
	--log "file=$LOG_FILE,level=20" \
	--flags not-need-init,startup-clear

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

# The TPM_PT_LOCKOUT_COUNTER must still be '0' now: tssgetcapability -cap 6 -pr 0x20e -pc 1
# Without swtpm sending TPM2_Shutdown, it would be '2' now
cmd='\x80\x01\x00\x00\x00\x16\x00\x00\x01\x7a\x00\x00\x00\x06\x00\x00\x02\x0e\x00\x00\x00\x01'
RES=$(swtpm_cmd_tx "${SWTPM_INTERFACE}" ${cmd})
exp=' 80 01 00 00 00 1b 00 00 00 00 01 00 00 00 06 00 00 00 01 00 00 02 0e 00 00 00 00'
if [ "$RES" != "$exp" ]; then
	echo "Error: Did not get expected result from TPM2_GetCapability(TPM_PT_LOCKOUT_COUNTER)"
	echo "expected: $exp"
	echo "received: $RES"
	exit 1
fi

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

echo "OK"

exit 0