#!/bin/sh

# Copyright (C) 2014-2022 Internet Systems Consortium, Inc. ("ISC")
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

# shellcheck disable=SC1091
# SC1091: Not following: ... was not specified as input (see shellcheck -x).

# Exit with error if commands exit with non-zero and if undefined variables are
# used.
set -eu

# Disclaimer: `${keactrl} start` commands use `set +e` / `set -e` instead of
# run_command because
# run_command launches a subshell which inherently waits
# for the background processes started in `${keactrl} start` which don't end
# until explicitly stopped. So the test would freeze if
# run_command would be used.

# Include common test library.
. "@abs_top_builddir@/src/lib/testutils/dhcp_test_lib.sh"

# Set location of the keactrl.
keactrl="@abs_top_builddir@/src/bin/keactrl/keactrl"

# Set the have_netconf flag to know if netconf is available.
if test '@HAVE_NETCONF@' = 'yes'; then
    have_netconf=true
else
    have_netconf=false
fi

# Configuration file names need to have two '.' to check proper extension detection.
# This is why the names contain '.conf' followed by the extension which is '.json'
# Names for DHCPv4
DHCP4_CFG_FILE_NAME="dhcp4_test_config.conf"
DHCP4_CFG_FILE="@abs_top_builddir@/src/bin/keactrl/tests/${DHCP4_CFG_FILE_NAME}.json"
# Names for DHCPv6
DHCP6_CFG_FILE_NAME="dhcp6_test_config.conf"
DHCP6_CFG_FILE="@abs_top_builddir@/src/bin/keactrl/tests/${DHCP6_CFG_FILE_NAME}.json"
# Names for D2
D2_CFG_FILE_NAME="d2_test_config.conf"
D2_CFG_FILE="@abs_top_builddir@/src/bin/keactrl/tests/${D2_CFG_FILE_NAME}.json"
# Names for CA
CA_CFG_FILE_NAME="ca_test_config.conf"
CA_CFG_FILE="@abs_top_builddir@/src/bin/keactrl/tests/${CA_CFG_FILE_NAME}.json"
# Names for Netconf
NC_CFG_FILE_NAME="nc_test_config.conf"
NC_CFG_FILE="@abs_top_builddir@/src/bin/keactrl/tests/${NC_CFG_FILE_NAME}.json"
# Configuration files for all daemons.
CFG_FILES="kea_dhcp4_config_file=${DHCP4_CFG_FILE}\n\
kea_dhcp6_config_file=${DHCP6_CFG_FILE}\n\
kea_dhcp_ddns_config_file=${D2_CFG_FILE}\n\
kea_ctrl_agent_config_file=${CA_CFG_FILE}\n\
kea_netconf_config_file=${NC_CFG_FILE}"
KEACTRL_BUILD_DIR="@abs_top_builddir@"
# A name of the keactrl config file
KEACTRL_CFG_FILE="@abs_top_builddir@/src/bin/keactrl/tests/keactrl_test.conf"
# Path to the Kea log file.
LOG_FILE="@abs_top_builddir@/src/bin/keactrl/tests/test.log"
# Binaries' names
wildcard_name="kea-"
kea4_name="${wildcard_name}dhcp4"
kea6_name="${wildcard_name}dhcp6"
d2_name="${wildcard_name}dhcp-ddns"
agent_name="${wildcard_name}ctrl-agent"
netconf_name="${wildcard_name}netconf"

# DHCPv4 configuration
dhcp4_config="{
    \"Dhcp4\":
    {
        \"interfaces-config\": {
            \"interfaces\": [ ]
        },
        \"valid-lifetime\": 4000,
        \"renew-timer\": 1000,
        \"rebind-timer\": 2000,
        \"lease-database\":
        {
            \"type\": \"memfile\",
            \"persist\": false
        },
        \"subnet4\": [
        {
            \"subnet\": \"10.0.0.0/24\",
            \"pools\": [ { \"pool\": \"10.0.0.10-10.0.0.100\" } ]
        } ],
        \"loggers\": [
        {
            \"name\": \"kea-dhcp4\",
            \"output_options\": [
                {
                    \"output\": \"$LOG_FILE\"
                }
            ],
            \"severity\": \"INFO\"
        }
        ]
    }
}"

# DHCPv6 configuration
dhcp6_config="{
    \"Dhcp6\":
    {
        \"interfaces-config\": {
            \"interfaces\": [ ]
        },
        \"server-id\": {
          \"type\": \"LLT\",
          \"persist\": false
        },
        \"preferred-lifetime\": 3000,
        \"valid-lifetime\": 4000,
        \"renew-timer\": 1000,
        \"rebind-timer\": 2000,
        \"lease-database\":
        {
            \"type\": \"memfile\",
            \"persist\": false
        },
        \"subnet6\": [
        {
            \"subnet\": \"2001:db8:1::/64\",
            \"pools\": [ { \"pool\": \"2001:db8:1::10-2001:db8:1::100\" } ]
        } ],
        \"loggers\": [
        {
            \"name\": \"kea-dhcp6\",
            \"output_options\": [
                {
                    \"output\": \"$LOG_FILE\"
                }
            ],
            \"severity\": \"INFO\"
        }
        ]
    }
}"

# DHCP-DDNS configuration
dhcp_ddns_config="{
    \"DhcpDdns\":
    {
        \"ip-address\": \"127.0.0.1\",
        \"port\": 53001,
        \"tsig-keys\": [],
        \"forward-ddns\" : {},
        \"reverse-ddns\" : {},
        \"loggers\": [
        {
            \"name\": \"kea-dhcp-ddns\",
            \"output_options\": [
                {
                    \"output\": \"$LOG_FILE\"
                }
            ],
            \"severity\": \"INFO\"
        }
        ]
    }
}"

# Control-agent configuration
control_agent_config="{
    \"Control-agent\": {
        \"http-host\": \"127.0.0.1\",
        \"http-port\": 18080,
        \"loggers\": [
        {
            \"name\": \"kea-ctrl-agent\",
            \"output_options\": [
                {
                    \"output\": \"$LOG_FILE\"
                }
            ],
            \"severity\": \"INFO\"
        }
        ]
    }
}"

# Netconf configuration
netconf_config="{
    \"Netconf\": {
        \"loggers\": [
        {
            \"name\": \"kea-netconf\",
            \"output_options\": [
                {
                    \"output\": \"$LOG_FILE\"
                }
            ],
            \"severity\": \"INFO\"
        }
        ]
    }
}"

# Fixed part of the keactrl configuration file.
keactrl_fixed_config="dhcp4_srv=${KEACTRL_BUILD_DIR}/src/bin/dhcp4/kea-dhcp4\n\
dhcp6_srv=${KEACTRL_BUILD_DIR}/src/bin/dhcp6/kea-dhcp6\n\
dhcp_ddns_srv=${KEACTRL_BUILD_DIR}/src/bin/d2/kea-dhcp-ddns\n\
ctrl_agent_srv=${KEACTRL_BUILD_DIR}/src/bin/agent/kea-ctrl-agent\n\
netconf_srv=${KEACTRL_BUILD_DIR}/src/bin/netconf/kea-netconf\n"

# This test checks that DHCPv4, DHCPv6, D2, CA and Netconf server can
# be started and shut down.
start_all_servers_no_verbose_test() {
    # Create configuration file for keactrl. This configuration enables
    # DHCPv4, DHCPv6, D2, CA and netconf.
    keactrl_config="${CFG_FILES}\ndhcp4=yes\ndhcp6=yes\n\
dhcp_ddns=yes\nctrl_agent=yes\nnetconf=yes\n\
kea_verbose=no\n${keactrl_fixed_config}"

    test_start "keactrl.start_all_servers_no_verbose_test"

    # Create configuration file for Kea and for keactrl.
    create_dhcp4_config "${dhcp4_config}"
    create_dhcp6_config "${dhcp6_config}"
    create_d2_config "${dhcp_ddns_config}"
    create_ca_config "${control_agent_config}"
    create_nc_config "${netconf_config}"
    create_keactrl_config "${keactrl_config}"

    # Set logging to a file.
    set_logger

    # Start servers using keactrl script.
    printf 'Starting Kea: %s start -c %s -s all\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    # Append the -s option to specify all servers. This is not necessary
    # because all should be a default but let's see if it is accepted
    # by the command line parser.
    set +e
    "${keactrl}" start -c ${KEACTRL_CFG_FILE} -s all
    assert_eq 0 "${?}" "Expected keactrl to return %d, returned value was %d"
    set -e

    # Wait up to 20s for the DHCPv6 server to configure.
    wait_for_message 20 "DHCP6_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea6_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 20s for the DHCPv4 server to configure.
    wait_for_message 20 "DHCP4_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Wait for D2, CA and Netconf to configure.
    if ${have_netconf}; then
        expected=3
    else
        expected=2
    fi
    wait_for_message 20 "DCTL_CONFIG_COMPLETE" ${expected}
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for CPL daemons to start. \
Expected wait_for_message return %d, returned %d."

    wait_for_message 20 "DHCP_DDNS_STARTED" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${d2_name} to start. \
Expected wait_for_message return %d, returned %d."

    wait_for_message 20 "CTRL_AGENT_HTTP_SERVICE_STARTED" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${agent_name} to start. \
Expected wait_for_message return %d, returned %d."

    if ${have_netconf}; then
        wait_for_message 20 "NETCONF_STARTED" 1
        assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
            "Timeout waiting for${netconf_name} to start. \
Expected wait_for_message return %d, returned %d."
    fi

    # Make sure that debug messages are logged for neither
    # server (non-verbose mode).
    get_log_messages "DHCP6_START_INFO"
    assert_eq 0 "${_GET_LOG_MESSAGES}" \
        "Expected get_log_messages return %d, returned %d."

    get_log_messages "DHCP4_START_INFO"
    assert_eq 0 "${_GET_LOG_MESSAGES}" \
        "Expected get_log_messages return %d, returned %d."

    get_log_messages "DCTL_STANDALONE"
    assert_eq 0 "${_GET_LOG_MESSAGES}" \
        "Expected get_log_messages return %d, returned %d."

    # Server may shut down immediately after configuration has completed.
    # Give it some time to shutdown.
    sleep 3

    # Make sure that all servers are running.
    get_pid ${kea4_name} ${DHCP4_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea4_name} process running, found %d processes running"

    get_pid ${kea6_name} ${DHCP6_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea6_name} process running, found %d processes running"

    get_pid ${d2_name} ${D2_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${d2_name} process running, found %d processes running"

    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 1 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Use keactrl stop to shutdown the servers.
    printf 'Stopping Kea: %s stop -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    set +e
    "${keactrl}" stop -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${?}" "Expected keactrl to return %d, returned value was %d."
    set -e

    # Wait up to 10s for the DHCPv6 server to stop.
    wait_for_message 10 "DHCP6_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea6_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 10s for the DHCPv4 server to stop.
    wait_for_message 10 "DHCP4_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 10s for the D2, CA and Netconf to stop.
    if ${have_netconf}; then
        expected=3
    else
        expected=2
    fi
    wait_for_message 10 "DCTL_SHUTDOWN" ${expected}
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${d2_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Make sure that all servers are down.
    if ${have_netconf}; then
        expected=6
    else
        expected=5
    fi
    wait_for_server_down ${expected} ${wildcard_name}
    assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
        "Expected wait_for_server_down return %d, returned %d"

    test_finish 0
}

# This test checks that both DHCPv4 and DHCPv6 server can be started in
# a verbose mode.
start_all_servers_verbose_test() {
    # Create configuration file for keactrl. This configuration enables
    # all servers.
    keactrl_config="${CFG_FILES}\ndhcp4=yes\ndhcp6=yes\n\
dhcp_ddns=yes\nctrl_agent=yes\nnetconf=yes\n\
kea_verbose=yes\n${keactrl_fixed_config}"

    test_start "keactrl.start_all_servers_verbose_test"

    # Create configuration file for Kea and for keactrl.
    create_dhcp4_config "${dhcp4_config}"
    create_dhcp6_config "${dhcp6_config}"
    create_d2_config "${dhcp_ddns_config}"
    create_ca_config "${control_agent_config}"
    create_nc_config "${netconf_config}"
    create_keactrl_config "${keactrl_config}"

    # Set logging to a file.
    set_logger

    # Start servers using keactrl script.
    printf 'Starting Kea: %s start -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    set +e
    "${keactrl}" start -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d"
    set -e

    # Wait up to 20s for the DHCPv6 server to configure.
    wait_for_message 20 "DHCP6_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea6_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 20s for the DHCPv4 server to configure.
    wait_for_message 20 "DHCP4_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to start. \
Expected wait_for_message return %d, returned %d."

    wait_for_message 20 "DCTL_CONFIG_COMPLETE" 2
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for CPL daemons to start. \
Expected wait_for_message return %d, returned %d."

    wait_for_message 20 "DHCP_DDNS_STARTED" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${d2_name} to start. \
Expected wait_for_message return %d, returned %d."

    wait_for_message 20 "CTRL_AGENT_HTTP_SERVICE_STARTED" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${agent_name} to start. \
Expected wait_for_message return %d, returned %d."

    if ${have_netconf}; then
        wait_for_message 20 "NETCONF_STARTED" 1
        assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
            "Timeout waiting for${netconf_name} to start. \
Expected wait_for_message return %d, returned %d."
    fi

    # Check if the debug messages are present, which should only be
    # the case if the verbose mode is on.
    get_log_messages "DHCP6_START_INFO" 1
    assert_eq 1 "${_GET_LOG_MESSAGES}" \
        "Expected get_log_messages for DHCP6_START_INFO return %d, returned %d."

    get_log_messages "DHCP4_START_INFO" 1
    assert_eq 1 "${_GET_LOG_MESSAGES}" \
        "Expected get_log_messages for DHCP4_START_INFO return %d, returned %d."

    if ${have_netconf}; then
        expected=3
    else
        expected=2
    fi
    get_log_messages "DCTL_STANDALONE" ${expected}
    assert_eq "${expected}" "${_GET_LOG_MESSAGES}" \
        "Expected get_log_messages for DCT_STANDALONE return %d, returned %d."

    # Server may shut down immediately after configuration has completed.
    # Give it some time to shutdown.
    sleep 3

    # Make sure that all servers are running.
    get_pid ${kea4_name} ${DHCP4_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea4_name} process running, found %d processes running"

    get_pid ${kea6_name} ${DHCP6_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea6_name} process running, found %d processes running"

    get_pid ${d2_name} ${D2_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${d2_name} process running, found %d processes running"

    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 1 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Use keactrl stop to shutdown the servers.
    printf 'Stopping Kea: %s stop -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" stop -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d."

    # Wait up to 10s for the DHCPv6 server to stop.
    wait_for_message 10 "DHCP6_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea6_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 10s for the DHCPv4 server to stop.
    wait_for_message 10 "DHCP4_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 10s for the D2, CA and Netconf to stop.
    if ${have_netconf}; then
        expected=3
    else
        expected=2
    fi
    wait_for_message 10 "DCTL_SHUTDOWN" ${expected}
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${d2_name} and ${agent_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Make sure that all servers are down.
    if ${have_netconf}; then
        expected=6
    else
        expected=5
    fi
    wait_for_server_down ${expected} ${wildcard_name}
    assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
        "Expected wait_for_server_down return %d, returned %d"

    test_finish 0
}

# Test that a simple "keactrl status" works.
keactrl_status_test() {
  # Create the configuration files.
  create_dhcp4_config "${dhcp4_config}"
  create_dhcp6_config "${dhcp6_config}"
  create_d2_config "${dhcp_ddns_config}"
  create_ca_config "${control_agent_config}"
  create_nc_config "${netconf_config}"
  create_keactrl_config "${CFG_FILES}
${keactrl_fixed_config}
ctrl_agent=no
dhcp_ddns=no
dhcp4=yes
dhcp6=yes
netconf=no
kea_verbose=no
"

  run_command \
    "${keactrl}" status -c "${KEACTRL_CFG_FILE}"
  assert_eq 0 "${EXIT_CODE}"
  assert_str_eq \
'DHCPv4 server: inactive
DHCPv6 server: inactive
DHCP DDNS: inactive
Control Agent: inactive' \
    "$(printf '%s\n' "${OUTPUT}" | head -n 4)"

  if "${have_netconf}"; then
    assert_str_eq 'Netconf agent: inactive' \
      "$(printf '%s\n' "${OUTPUT}" | head -n 5 | tail -n 1)"
  fi
}

# Test that a simple "keactrl status" without a configuration file works in two
# cases: KEA_PIDFILE_DIR set and not set.
keactrl_status_tests() {
  # Run first without any relevant entries in the configuration file.
  test_start 'keactrl.status_test.empty_config'
  create_keactrl_config 'hello=world'
  run_command \
    "${keactrl}" status -c "${KEACTRL_CFG_FILE}"
  assert_eq 1 "${EXIT_CODE}"
  test_finish ${?}

  # Run without KEA_PIDFILE_DIR.
  if test -n "${KEA_PIDFILE_DIR+x}"; then
    save_kea_pidfile_dir="${KEA_PIDFILE_DIR}"
    unset KEA_PIDFILE_DIR
  fi
  assert_str_eq '' "${KEA_PIDFILE_DIR-}"

  test_start 'keactrl.status_test'
  keactrl_status_test
  test_finish ${?}

  # Restore KEA_PIDFILE_DIR which should have been set from dhcp_test_lib.sh.
  if test -n "${save_kea_pidfile_dir+x}"; then
    export KEA_PIDFILE_DIR="${save_kea_pidfile_dir}"
  fi
  assert_str_neq '' "${KEA_PIDFILE_DIR-}"

  # Restore KEA_PIDFILE_DIR.
  test_start 'keactrl.status_test.KEA_PIDFILE_DIR'
  keactrl_status_test
  test_finish ${?}
}

# This test checks that only DHCPv4 server can be started and that other
# servers are not started.
start_v4_server_test() {
    # Create configuration file for keactrl. This configuration enables
    # DHCPv4 server but disables other servers.
    keactrl_config="${CFG_FILES}\ndhcp4=yes\ndhcp6=no\n\
dhcp_ddns=no\nctrl_agent=no\nnetconf=no\n\
kea_verbose=no\n${keactrl_fixed_config}"

    test_start "keactrl.start_v4_server_test"

    # Create configuration file for Kea and for keactrl.
    create_dhcp4_config "${dhcp4_config}"
    create_dhcp6_config "${dhcp6_config}"
    create_d2_config "${dhcp_ddns_config}"
    create_ca_config "${control_agent_config}"
    create_nc_config "${netconf_config}"
    create_keactrl_config "${keactrl_config}"

    # Set logging to a file.
    set_logger

    # Start DHCPv4 server using keactrl script.
    printf 'Starting Kea: %s start -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    set +e
    "${keactrl}" start -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return 0, returned value was ${EXIT_CODE}"
    set -e

    # Wait up to 20s for the DHCPv4 server to configure.
    wait_for_message 20 "DHCP4_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Server may shut down immediately after configuration has completed.
    # Give it some time to shutdown.
    sleep 3

    # Make sure that DHCPv4 server is running.
    get_pid ${kea4_name} ${DHCP4_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea4_name} process running, found %d processes running"

    # Make sure that DHCPv6 server is not running.
    get_pid ${kea6_name} ${DHCP6_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea6_name} process running, found %d processes running"

    # Make sure that D2 server is not running.
    get_pid ${d2_name} ${D2_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${d2_name} process running, found %d processes running"

    # Make sure that CA is not running.
    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    # Make sure that Netconf agent is not running.
    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 0 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Make sure that the status command returns appropriate status.
    printf "Getting status of Kea modules: %s\n" "${keactrl} status \
-c ${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" status -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned %d"
    assert_string_contains "DHCPv4 server: active" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    assert_string_contains "DHCPv6 server: inactive" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    assert_string_contains "DHCP DDNS: inactive" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    assert_string_contains "Control Agent: inactive" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    if ${have_netconf}; then
        assert_string_contains "Netconf agent: inactive" "${OUTPUT}" \
            "Expected keactrl status command return %s"
    fi

    # Use keactrl stop to shutdown the servers.
    printf 'Stopping Kea: %s stop -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" stop -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d."

    # Wait up to 10s for the DHCPv4 server to stop.
    wait_for_message 10 "DHCP4_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Make sure that all servers are down.
    if ${have_netconf}; then
        expected=6
    else
        expected=5
    fi
    wait_for_server_down ${expected} ${wildcard_name}
    assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
        "Expected wait_for_server_down return %d, returned %d"

    test_finish 0
}

# This test checks that only DHCPv6 server can be started and that other
# servers are not started.
start_v6_server_test() {
    # Create configuration file for keactrl. This configuration enables
    # DHCPv6 server but disables other servers..
    keactrl_config="${CFG_FILES}\ndhcp4=no\ndhcp6=yes\n\
dhcp_ddns=no\nctrl_agent=no\nnetconf=no\n\
kea_verbose=no\n${keactrl_fixed_config}"

    test_start "keactrl.start_v6_server_test"

    # Create configuration file for Kea and for keactrl.
    create_dhcp4_config "${dhcp4_config}"
    create_dhcp6_config "${dhcp6_config}"
    create_d2_config "${dhcp_ddns_config}"
    create_ca_config "${control_agent_config}"
    create_nc_config "${netconf_config}"
    create_keactrl_config "${keactrl_config}"

    # Set logging to a file.
    set_logger

    # Start DHCPv6 server using keactrl script.
    printf 'Starting Kea: %s start -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    set +e
    "${keactrl}" start -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d"
    set -e

    # Wait up to 20s for the DHCPv6 server to configure.
    wait_for_message 20 "DHCP6_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea6_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Server may shut down immediately after configuration has completed.
    # Give it some time to shutdown.
    sleep 3

    # Make sure that DHCPv6 server is running.
    get_pid ${kea6_name} ${DHCP6_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea6_name} process running, found %d processes running"

    # Make sure that DHCPv4 server is not running.
    get_pid ${kea4_name} ${DHCP4_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea4_name} process running, found %d processes running"

    # Make sure that D2 server is not running.
    get_pid ${d2_name} ${D2_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${d2_name} process running, found %d processes running"

    # Make sure that CA is not running.
    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    # Make sure that Netconf agent is not running.
    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 0 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Make sure that the status command returns appropriate status.
    printf "Getting status of Kea modules: %s\n" "${keactrl} status -c ${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" status -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned %d"
    assert_string_contains "DHCPv4 server: inactive" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    assert_string_contains "DHCPv6 server: active" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    assert_string_contains "DHCP DDNS: inactive" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    assert_string_contains "Control Agent: inactive" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    if ${have_netconf}; then
        assert_string_contains "Netconf agent: inactive" "${OUTPUT}" \
            "Expected keactrl status command return %s"
    fi

    # Use keactrl stop to shutdown the servers.
    printf 'Stopping Kea: %s stop -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" stop -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d."

    # Wait up to 10s for the DHCPv6 server to stop.
    wait_for_message 10 "DHCP6_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea6_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Make sure that all servers are down.
    if ${have_netconf}; then
        expected=6
    else
        expected=5
    fi
    wait_for_server_down ${expected} ${wildcard_name}
    assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
        "Expected wait_for_server_down return %d, returned %d"

    test_finish 0
}

# This test checks that the DHCPv4 server can be started first, and then the
# other servers can be started while DHCPv4 server is already running.
# Also check that both servers can be reconfigured.
late_start_v4_server_test() {
    # Create configuration file for keactrl. This configuration enables
    # DHCPv6 server but disables other servers.
    keactrl_config="${CFG_FILES}\ndhcp4=no\ndhcp6=yes\n\
dhcp_ddns=no\nctrl_agent=no\nnetconf=no\n\
kea_verbose=no\n${keactrl_fixed_config}"

    test_start "keactrl.late_start_v4_server_test"

    # Create configuration file for Kea and for keactrl.
    create_dhcp4_config "${dhcp4_config}"
    create_dhcp6_config "${dhcp6_config}"
    create_d2_config "${dhcp_ddns_config}"
    create_ca_config "${control_agent_config}"
    create_nc_config "${netconf_config}"
    create_keactrl_config "${keactrl_config}"

    # Set logging to a file.
    set_logger

    # Start DHCPv6 server using keactrl script.
    printf 'Starting Kea: %s start -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    set +e
    "${keactrl}" start -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return 0, returned value was ${EXIT_CODE}"
    set -e

    # Wait up to 20s for the DHCPv6 server to configure.
    wait_for_message 20 "DHCP6_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea6_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Server may shut down immediately after configuration has completed.
    # Give it some time to shutdown.
    sleep 3

    # Make sure that DHCPv6 server is running.
    get_pid ${kea6_name} ${DHCP6_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea6_name} process running, found %d processes running"

    # Make sure that DHCPv4 server is not running.
    get_pid ${kea4_name} ${DHCP4_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea4_name} process running, found %d processes running"

    # Make sure that D2 server is not running.
    get_pid ${d2_name} ${D2_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${d2_name} process running, found %d processes running"

    # Make sure that CA is not running.
    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    # Make sure that Netconf agent is not running.
    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 0 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Trigger reconfiguration, make sure that the DHCPv6 server reconfigured.
    printf 'Reconfiguring the DHCPv6 server: %s reload -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" reload -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d"

    # There should be two completed reconfigurations so far.
    wait_for_message 10 "DHCP6_CONFIG_COMPLETE" 2
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" "Timeout waiting for ${kea6_name} to reconfigure. \
Expected wait_for_message to return %d, returned %d."

    # Update keactrl config to enable other servers.
    keactrl_config="${CFG_FILES}\ndhcp4=yes\ndhcp6=yes\n\
dhcp_ddns=yes\nctrl_agent=yes\nnetconf=yes\n\
kea_verbose=yes\n${keactrl_fixed_config}"
    create_keactrl_config "${keactrl_config}"

    # Start other servers using keactrl script.
    printf 'Starting Kea: %s start -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    set +e
    "${keactrl}" start -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d"
    set -e

    # Wait up to 20s for the DHCPv4 server to configure.
    wait_for_message 20 "DHCP4_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 20s for the D2, CA and Netconf to configure.
    if ${have_netconf}; then
        expected=3
    else
        expected=2
    fi
    wait_for_message 20 "DCTL_CONFIG_COMPLETE" ${expected}
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${d2_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Make sure that DHCPv6 server is running.
    get_pid ${kea6_name} ${DHCP6_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea6_name} process running, found %d processes running"

    # Make sure that DHCPv4 server is running.
    get_pid ${kea4_name} ${DHCP4_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea4_name} process running, found %d processes running"

    # Make sure that D2 server is running.
    get_pid ${d2_name} ${D2_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${d2_name} process running, found %d processes running"

    # Make sure that CA is running.
    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    # Make sure that Netconf agent is running.
    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 1 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Trigger reconfiguration, make sure that servers are reconfigured.
    printf "Reconfiguring all servers: %s reload -c %s\n" \
        "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" reload -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d"

    # There should be three completed configurations of DHCPv6 server.
    wait_for_message 10 "DHCP6_CONFIG_COMPLETE" 3
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" "Timeout waiting for ${kea6_name} to reconfigure. \
Expected wait_for_message to return %d, returned %d."

    # There should be two completed configurations of DHCPv4 server.
    wait_for_message 10 "DHCP4_CONFIG_COMPLETE" 2
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" "Timeout waiting for ${kea4_name} to reconfigure. \
Expected wait_for_message to return %d, returned %d."

    # There should be two completed configurations of D2 and two
    # configurations of CA.
    wait_for_message 10 "DCTL_CONFIG_COMPLETE" 4
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" "Timeout waiting for ${d2_name} or ${agent_name} \
to reconfigure. Expected wait_for_message to return %d, returned %d."

    # Use keactrl stop to shutdown the servers.
    printf 'Stopping Kea: %s stop -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" stop -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d."

    # Wait up to 10s for the DHCPv6 server to stop.
    wait_for_message 10 "DHCP6_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea6_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 10s for the DHCPv4 server to stop.
    wait_for_message 10 "DHCP4_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 10s for the D2, CA and Netconf to stop.
    if ${have_netconf}; then
        expected=3
    else
        expected=2
    fi
    wait_for_message 10 "DCTL_SHUTDOWN" ${expected}
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${d2_name} and ${agent_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Make sure that all servers are down.
    if ${have_netconf}; then
        expected=6
    else
        expected=5
    fi
    wait_for_server_down ${expected} ${wildcard_name}
    assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
        "Expected wait_for_server_down return %d, returned %d"

    test_finish 0
}

# This test checks that the DHCPv4 server can be started first, and then the
# other servers can be started while DHCPv4 server is already running.
# Also check that both servers can be reconfigured.
late_start_v6_server_test() {
    # Create configuration file for keactrl. This configuration enables
    # DHCPv4 server but disables DHCPv6 server.
    keactrl_config="${CFG_FILES}\ndhcp4=yes\ndhcp6=no\n\
dhcp_ddns=no\nctrl_agent=no\nnetconf=no\n\
kea_verbose=yes\n${keactrl_fixed_config}"

    test_start "keactrl.late_start_v6_server_test"

    # Create configuration file for Kea and for keactrl.
    create_dhcp4_config "${dhcp4_config}"
    create_dhcp6_config "${dhcp6_config}"
    create_d2_config "${dhcp_ddns_config}"
    create_ca_config "${control_agent_config}"
    create_nc_config "${netconf_config}"
    create_keactrl_config "${keactrl_config}"

    # Set logging to a file.
    set_logger

    # Start DHCPv4 server using keactrl script.
    printf 'Starting Kea: %s start -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    set +e
    "${keactrl}" start -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return 0, returned value was ${EXIT_CODE}"
    set -e

    # Wait up to 20s for the DHCPv4 server to configure.
    wait_for_message 20 "DHCP4_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Server may shut down immediately after configuration has completed.
    # Give it some time to shutdown.
    sleep 3

    # Make sure that DHCPv4 server is running.
    get_pid ${kea4_name} ${DHCP4_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea4_name} process running, found %d processes running"

    # Make sure that DHCPv6 server is not running.
    get_pid ${kea6_name} ${DHCP6_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea6_name} process running, found %d processes running"

    # Make sure that D2 server is not running.
    get_pid ${d2_name} ${D2_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${d2_name} process running, found %d processes running"

    # Make sure that CA is not running.
    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 0 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    # Make sure that Netconf agent is not running.
    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 0 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Trigger reconfiguration, make sure that the DHCPv4 server is reconfigured.
    printf 'Reconfiguring the DHCPv4 server: %s reload -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" reload -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d"

    # There should be two completed reconfigurations so far.
    wait_for_message 10 "DHCP4_CONFIG_COMPLETE" 2
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" "Timeout waiting for ${kea4_name} to reconfigure. \
Expected wait_for_message to return %d, returned %d."

    # Update keactrl config to enable other servers.
    keactrl_config="${CFG_FILES}\ndhcp4=yes\ndhcp6=yes\n\
dhcp_ddns=yes\nctrl_agent=yes\nnetconf=yes\n\
kea_verbose=no\n${keactrl_fixed_config}"
    create_keactrl_config "${keactrl_config}"

    # Start other servers using keactrl script.
    printf 'Starting Kea: %s start -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    set +e
    "${keactrl}" start -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return 0, returned value was ${EXIT_CODE}"
    set -e

    # Wait up to 20s for the DHCPv6 server to configure.
    wait_for_message 20 "DHCP6_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 20s for the D2, CA and Netconf to configure.
    if ${have_netconf}; then
        expected=3
    else
        expected=2
    fi
    wait_for_message 20 "DCTL_CONFIG_COMPLETE" ${expected}
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${d2_name} to start. \
Expected wait_for_message return %d, returned %d."


    # Make sure that DHCPv6 server is running.
    get_pid ${kea6_name} ${DHCP6_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea6_name} process running, found %d processes running"

    # Make sure that DHCPv4 server is running.
    get_pid ${kea4_name} ${DHCP4_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea4_name} process running, found %d processes running"

    # Make sure that D2 server is running.
    get_pid ${d2_name} ${D2_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${d2_name} process running, found %d processes running"

    # Make sure that CA is running.
    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    # Make sure that Netconf agent is running.
    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 1 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Trigger reconfiguration, make sure that servers are reconfigured.
    printf 'Reconfiguring DHCPv6 and DHCPv4 servers: %s reload -c %s\n' \
        "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" reload -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d"

    # There should be three completed configurations of DHCPv4 server.
    wait_for_message 10 "DHCP4_CONFIG_COMPLETE" 3
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" "Timeout waiting for ${kea4_name} to reconfigure. \
Expected wait_for_message to return %d, returned %d."

    # There should be two completed configurations of DHCPv6 server.
    wait_for_message 10 "DHCP6_CONFIG_COMPLETE" 2
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" "Timeout waiting for ${kea6_name} to reconfigure. \
Expected wait_for_message to return %d, returned %d."

    # There should be two completed configurations of D2 and two
    # configurations of CA.
    wait_for_message 10 "DCTL_CONFIG_COMPLETE" 4
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" "Timeout waiting for ${d2_name} to reconfigure. \
Expected wait_for_message to return %d, returned %d."

    # Use keactrl stop to shutdown the servers.
    printf 'Stopping Kea: %s stop -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" stop -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d."

    # Wait up to 10s for the DHCPv6 server to stop.
    wait_for_message 10 "DHCP6_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea6_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 10s for the DHCPv4 server to stop.
    wait_for_message 10 "DHCP4_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 10s for the D2, CA and Netconf to stop.
    wait_for_message 10 "DCTL_SHUTDOWN" 2
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${d2_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Make sure that all servers are down.
    if ${have_netconf}; then
        expected=6
    else
        expected=5
    fi
    wait_for_server_down ${expected} ${wildcard_name}
    assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
        "Expected wait_for_server_down return %d, returned %d"

    test_finish 0
}

# This test checks that the servers can be shutdown selectively.
stop_selected_server_test() {
    # Create configuration file for keactrl. This configuration enables
    # all servers.
    keactrl_config="${CFG_FILES}\ndhcp4=yes\ndhcp6=yes\n\
dhcp_ddns=yes\nctrl_agent=yes\nnetconf=yes\n\
kea_verbose=no\n${keactrl_fixed_config}"

    test_start "keactrl.stop_selected_server_test"

    # Create configuration file for Kea and for keactrl.
    create_dhcp4_config "${dhcp4_config}"
    create_dhcp6_config "${dhcp6_config}"
    create_d2_config "${dhcp_ddns_config}"
    create_ca_config "${control_agent_config}"
    create_nc_config "${netconf_config}"
    create_keactrl_config "${keactrl_config}"

    # Set logging to a file.
    set_logger

    # Start servers using keactrl script.
    printf 'Starting Kea: %s start -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    set +e
    "${keactrl}" start -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d"
    set -e

    # Wait up to 20s for the DHCPv6 server to configure.
    wait_for_message 20 "DHCP6_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea6_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 20s for the DHCPv4 server to configure.
    wait_for_message 20 "DHCP4_CONFIG_COMPLETE" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Wait up to 20s for the D2, CA and Netconf to configure.
    if ${have_netconf}; then
        expected=3
    else
        expected=2
    fi
    wait_for_message 20 "DCTL_CONFIG_COMPLETE" ${expected}
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${d2_name} to start. \
Expected wait_for_message return %d, returned %d."

    # Make sure that debug messages are not logged (non-verbose mode).
    get_log_messages "DHCP6_START_INFO"
    assert_eq 0 "${_GET_LOG_MESSAGES}" \
        "Expected get_log_messages return %d, returned %d."

    get_log_messages "DHCP4_START_INFO"
    assert_eq 0 "${_GET_LOG_MESSAGES}" \
        "Expected get_log_messages return %d, returned %d."

    get_log_messages "DCTL_STANDALONE"
    assert_eq 0 "${_GET_LOG_MESSAGES}" \
    "Expected get_log_messages return %d, returned %d."

    # Server may shut down immediately after configuration has completed.
    # Give it some time to shutdown.
    sleep 3

    # Make sure that all servers are running.
    get_pid ${kea4_name} ${DHCP4_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea4_name} process running, found %d processes running"

    get_pid ${kea6_name} ${DHCP6_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea6_name} process running, found %d processes running"

    get_pid ${d2_name} ${D2_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${d2_name} process running, found %d processes running"

    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 1 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Use keactrl stop to shutdown DHCPv4 server.
    printf "Stopping DHCPv4 server: %s stop -s dhcp4 -c %s\n" "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" stop -s dhcp4 -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d."

    # Wait up to 10s for the DHCPv4 server to stop.
    wait_for_message 10 "DHCP4_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea4_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Make sure that the DHCPv4 server is down.
    if ${have_netconf}; then
        expected=6
    else
        expected=5
    fi
    wait_for_server_down ${expected} ${kea4_name}
    assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
        "Expected wait_for_server_down return %d, returned %d"

    # Make sure DHCPv6 server is still running
    get_pid ${kea6_name} ${DHCP6_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${kea6_name} process running, found %d processes running"

    # Make sure D2 server is still running
    get_pid ${d2_name} ${D2_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${d2_name} process running, found %d processes running"

    # Make sure CA is still running
    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    # Make sure Netconf agent is still running
    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 1 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Use keactrl stop to shutdown DHCPv6 server.
    printf 'Stopping DHCPv6 server: %s stop -s dhcp6 -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" stop -s dhcp6 -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d."

    # Wait up to 10s for the DHCPv6 server to stop.
    wait_for_message 10 "DHCP6_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${kea6_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Make sure that the DHCPv6 server is down.
    if ${have_netconf}; then
        expected=6
    else
        expected=5
    fi
    wait_for_server_down ${expected} ${kea6_name}
    assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
        "Expected wait_for_server_down return %d, returned %d"

    # Make sure D2 server is still running
    get_pid ${d2_name} ${D2_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${d2_name} process running, found %d processes running"

    # Make sure CA is still running
    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    # Use keactrl stop to shutdown D2 server.
    printf 'Stopping DHCP DDNS server: %s stop -s dhcp_ddns -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" stop -s dhcp_ddns -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d."

    # Wait up to 10s for the D2 server to stop.
    wait_for_message 10 "DCTL_SHUTDOWN" 1
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${d2_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Make sure that the D2 server is down.
    if ${have_netconf}; then
        expected=6
    else
        expected=5
    fi
    wait_for_server_down ${expected} ${d2_name}
    assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
        "Expected wait_for_server_down return %d, returned %d"

    # Make sure CA is still running
    get_pid ${agent_name} ${CA_CFG_FILE_NAME}
    assert_eq 1 "${_GET_PIDS_NUM}" \
        "Expected %d ${agent_name} process running, found %d processes running"

    # Make sure Netconf agent is still running
    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 1 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Use keactrl stop to shutdown CA.
    printf 'Stopping Control Agent: %s stop -s ctrl_agent -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
    run_command \
        "${keactrl}" stop -s ctrl_agent -c ${KEACTRL_CFG_FILE}
    assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d."

    # Wait up to 10s for the CA to stop.
    wait_for_message 10 "DCTL_SHUTDOWN" 2
    assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
        "Timeout waiting for ${agent_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

    # Make sure that the CA is down.
    if ${have_netconf}; then
        expected=6
    else
        expected=5
    fi
    wait_for_server_down ${expected} ${agent_name}
    assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
        "Expected wait_for_server_down return %d, returned %d"

    # Make sure Netconf agent is still running
    if ${have_netconf}; then
        get_pid ${netconf_name} ${NC_CFG_FILE_NAME}
        assert_eq 1 "${_GET_PIDS_NUM}" \
            "Expected %d ${netconf_name} process running, found %d processes running"
    fi

    # Use keactrl stop to shutdown Netconf agent.
    if ${have_netconf}; then
        printf 'Stopping Netconf agent: %s stop -s netconf -c %s\n' "${keactrl}" "${KEACTRL_CFG_FILE}"
        run_command \
            "${keactrl}" stop -s netconf -c ${KEACTRL_CFG_FILE}
        assert_eq 0 "${EXIT_CODE}" "Expected keactrl to return %d, returned value was %d."

        # Wait up to 10s for the Netconf agent to stop.
        wait_for_message 10 "DCTL_SHUTDOWN" 2
        assert_eq 1 "${_WAIT_FOR_MESSAGE}" \
            "Timeout waiting for ${netconf_name} to shutdown. \
Expected wait_for_message return %d, returned %d."

        # Make sure that the Netconf agent is down.
        wait_for_server_down 6 ${netconf_name}
        assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
            "Expected wait_for_server_down return %d, returned %d"
    fi

    test_finish 0
}

# This test checks that the "status" command doesn't check the presence of the
# config file.
status_no_config_test() {
    test_start "keactrl.status_no_config_test"

    # Make sure that all config files are removed.
    cleanup

    # Create keactrl configuration file.
    create_keactrl_config "${keactrl_config}"

    # Make sure that the "status" command doesn't check the presence of
    # the config file.
    printf "Getting status without a Kea config file\n"

    run_command \
        "${keactrl}" status -c ${KEACTRL_CFG_FILE}
    assert_eq 1 "${EXIT_CODE}" "Expected keactrl to return %d, returned %d"
    assert_string_contains "DHCPv4 server: inactive" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    assert_string_contains "DHCPv6 server: inactive" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    assert_string_contains "DHCP DDNS: inactive" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    assert_string_contains "Control Agent: inactive" "${OUTPUT}" \
        "Expected keactrl status command return %s"
    if ${have_netconf}; then
        assert_string_contains "Netconf agent: inactive" "${OUTPUT}" \
            "Expected keactrl status command return %s"
    fi
    assert_string_contains "Configuration file for Kea does not exist" \
        "${OUTPUT}" "Expected keactrl status command return %s"

    test_finish 0
}

# This test uses version command, which reports version of the keactrl
# tool itself, but also all the daemons.
version_command_test() {
    test_start "keactrl.version-command"

    # Create configuration file for keactrl.
    # Note that += is NOT in POSIX shell so PLEASE do NOT use it.
    keactrl_config="${CFG_FILES}\ndhcp4=yes\ndhcp6=yes\ndhcp_ddns=yes\n"
    keactrl_config="${keactrl_config}ctrl_agent=yes\nnetconf=yes\n"
    keactrl_config="${keactrl_config}kea_verbose=no\n${keactrl_fixed_config}"
    create_keactrl_config "${keactrl_config}"

    # This is what we expect to get. We need to run it through printf
    # to convert \n to actual LF (0xa) or whatever the EOL is used on your
    # system.
    exp="keactrl: @PACKAGE_VERSION@\n"
    exp="${exp}kea-dhcp4: @PACKAGE_VERSION@\n"
    exp="${exp}kea-dhcp6: @PACKAGE_VERSION@\n"
    exp="${exp}kea-dhcp-ddns: @PACKAGE_VERSION@\n"
    exp="${exp}kea-ctrl-agent: @PACKAGE_VERSION@"
    if ${have_netconf}; then
        exp="${exp}\nkea-netconf: @PACKAGE_VERSION@"
    fi
    # The %b parameter tells printf to interpret backslashes.
    EXPECTED_RESP=$(printf "%b" "$exp")

    # Let's use short version:
    run_command \
        "${keactrl}" version -c ${KEACTRL_CFG_FILE}

    assert_str_eq "${EXPECTED_RESP}" "${OUTPUT}" \
                  "Expected keactrl version to report %s, but it reported %s"

    test_finish 0
}

keactrl_error_reporting_tests() {
  test_start 'keactrl_error_reporting_test'
  run_command \
    "${keactrl}"
  assert_eq 1 "${EXIT_CODE}"
  assert_str_eq 'ERROR/keactrl: missing command' "$(printf '%s\n' "${OUTPUT}" | head -n 1)"
  test_finish ${?}

  test_start 'keactrl_error_reporting_test.start.c'
  run_command \
    "${keactrl}" start -c
  assert_eq 1 "${EXIT_CODE}"
  assert_str_eq 'ERROR/keactrl: keactrl-config-file not specified' "$(printf '%s\n' "${OUTPUT}" | head -n 1)"
  test_finish ${?}

  test_start 'keactrl_error_reporting_test.start.s'
  run_command \
    "${keactrl}" start -s
  assert_eq 1 "${EXIT_CODE}"
  assert_str_eq 'ERROR/keactrl: servers not specified' "$(printf '%s\n' "${OUTPUT}" | head -n 1)"
  test_finish ${?}
}


# shellcheck disable=SC2034
# SC2034: ... appears unused. Verify use (or export if used externally).
# reason: bin and bin_path are used in version_test
{
bin=$(basename "${keactrl}")
bin_path=$(dirname "${keactrl}")
version_test 'keactrl.version' 'long_version_too_please'
}

keactrl_status_tests
version_command_test
start_all_servers_no_verbose_test
start_all_servers_verbose_test
start_v4_server_test
start_v6_server_test
late_start_v4_server_test
late_start_v6_server_test
stop_selected_server_test
status_no_config_test
keactrl_error_reporting_tests