#!/bin/bash
#
# Copyright 2012-2015 Red Hat, Inc.
#
# This file is part of Thermostat.
#
# Thermostat is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published
# by the Free Software Foundation; either version 2, or (at your
# option) any later version.
#
# Thermostat is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Thermostat; see the file COPYING.  If not see
# <http://www.gnu.org/licenses/>.
#
# Linking this code with other modules is making a combined work
# based on this code.  Thus, the terms and conditions of the GNU
# General Public License cover the whole combination.
#
# As a special exception, the copyright holders of this code give
# you permission to link this code with independent modules to
# produce an executable, regardless of the license terms of these
# independent modules, and to copy and distribute the resulting
# executable under terms of your choice, provided that you also
# meet, for each linked independent module, the terms and conditions
# of the license of that module.  An independent module is a module
# which is not derived from or based on this code.  If you modify
# this code, you may extend this exception to your version of the
# library, but you are not obligated to do so.  If you do not wish
# to do so, delete this exception statement from your version.
#
#####################################################################
#

if [ "$#" -lt 3 ]; then
  echo "usage: $0 <hostname> <port> <ipcConfigFile>" >&2
  exit 1
fi
HOSTNAME="$1"
PORT="$2"
CONFIG_FILE="$3"

# Source thermostat-ipc-client-common from same directory as this script
# Defines IPC_CLASSPATH variable with JARs necessary for the IPC service
CWD="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
. "${CWD}"/thermostat-ipc-client-common

# Ensure thermostat-ipc-client-common sourced correctly
if [ -z "${IPC_CLASSPATH}" ]; then
  echo "Classpath not properly defined for command channel" >&2
  exit 1
fi

# Additional JARs necessary for the server
IPC_CLASSPATH="${IPC_CLASSPATH}:${THERMOSTAT_LIBS}/thermostat-common-core-@project.version@.jar"
IPC_CLASSPATH="${IPC_CLASSPATH}:${THERMOSTAT_LIBS}/thermostat-shared-config-@project.version@.jar"
IPC_CLASSPATH="${IPC_CLASSPATH}:${THERMOSTAT_LIBS}/thermostat-agent-command-@project.version@.jar"
IPC_CLASSPATH="${IPC_CLASSPATH}:${THERMOSTAT_LIBS}/thermostat-common-command-@project.version@.jar"
IPC_CLASSPATH="${IPC_CLASSPATH}:${THERMOSTAT_LIBS}/thermostat-agent-command-server-@project.version@.jar"
IPC_CLASSPATH="${IPC_CLASSPATH}:${THERMOSTAT_LIBS}/netty-buffer-@netty.version@.jar"
IPC_CLASSPATH="${IPC_CLASSPATH}:${THERMOSTAT_LIBS}/netty-common-@netty.version@.jar"
IPC_CLASSPATH="${IPC_CLASSPATH}:${THERMOSTAT_LIBS}/netty-transport-@netty.version@.jar"
IPC_CLASSPATH="${IPC_CLASSPATH}:${THERMOSTAT_LIBS}/netty-codec-@netty.version@.jar"
IPC_CLASSPATH="${IPC_CLASSPATH}:${THERMOSTAT_LIBS}/netty-handler-@netty.version@.jar"
IPC_CLASSPATH="${IPC_CLASSPATH}:${THERMOSTAT_LIBS}/gson-@gson.version@.jar"

CMD_CHANNEL_CLASS="com.redhat.thermostat.agent.command.server.internal.CommandChannelServerMain"

# Set this to remote debug
if [ x"$THERMOSTAT_CMDC_DEBUG" != x ] ; then
  DEBUG_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,quiet=y,address=1083"
fi

# Determine owner of this file
THIS_SCRIPT="$CWD/thermostat-command-channel"
if [ $DARWIN_MODE -eq 0 ]; then
  SCRIPT_OWNER=$(stat -c '%U' "${THIS_SCRIPT}")
else
  # posix
  SCRIPT_OWNER=$(stat -f '%Su' "${THIS_SCRIPT}")
fi

# Start server
if [ $CYGWIN_MODE -eq 1 ]; then
	CONFIG_FILE_ARG="-DipcConfigFile=`cygpath -w ${CONFIG_FILE}`"
	# Drop permissions, if root
	if [ "$(id -u)" -eq 0 ]; then
	  exec /bin/su -s /bin/bash -c "${JAVA} ${CONFIG_FILE_ARG} "${LOGGING_ARGS[@]}" -cp "`cygpath -w -p ${IPC_CLASSPATH}`" ${DEBUG_OPTS} ${CMD_CHANNEL_CLASS} ${HOSTNAME} ${PORT}" "${SCRIPT_OWNER}"
	else
	  exec ${JAVA} "${CONFIG_FILE_ARG}" "${LOGGING_ARGS[@]}" -cp "`cygpath -w -p ${IPC_CLASSPATH}`" ${DEBUG_OPTS} "${CMD_CHANNEL_CLASS}" "${HOSTNAME}" "${PORT}"
	fi
else
	CONFIG_FILE_ARG="-DipcConfigFile=${CONFIG_FILE}"
	# Drop permissions, if root
	if [ "$(id -u)" -eq 0 ]; then
	  exec /bin/su -s /bin/bash -c "${JAVA} ${CONFIG_FILE_ARG} "${LOGGING_ARGS[@]}" -cp "${IPC_CLASSPATH}" ${DEBUG_OPTS} ${CMD_CHANNEL_CLASS} ${HOSTNAME} ${PORT}" "${SCRIPT_OWNER}"
	else
	  exec ${JAVA} "${CONFIG_FILE_ARG}" "${LOGGING_ARGS[@]}" -cp "${IPC_CLASSPATH}" ${DEBUG_OPTS} "${CMD_CHANNEL_CLASS}" "${HOSTNAME}" "${PORT}"
	fi
fi