#!/bin/sh

#====================================================================
# Start/stop script for LinShare server.
# (http://www.linpki.org/projects/show/linshare).
# 
# chkconfig: 2345 20 100
# description: LinShare
#
### BEGIN INIT INFO
# Provides:          linshare
# Required-Start:    $syslog
# Required-Stop:     $syslog
# Should-Start:      $network $time
# Should-Stop:       $network $time
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: LinShare
# Description:       LinShare init script
### END INIT INFO
#
# Copyright (C) 2010 Thomas CHEMINEAU
# Copyright (C) 2010 LINAGORA GROUP
#
# This program 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
# of the License, or (at your option) any later version.
#
# This program 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.
#
# GPL License: http://www.gnu.org/licenses/gpl.txt
#
#====================================================================

#====================================================================
# Changelog
#====================================================================
# Version X (Date)
# - What you have done
# Author: Your Name
# Author: Your Name
#
# Version 0.1 (03/2010)
# - First version
# Author: Thomas CHEMINEAU (LINAGORA GROUP)
#====================================================================

# -----------------------------------------------------------------------------
#  Parameters
# -----------------------------------------------------------------------------

LINSHARE_HOME="/opt/linshare"
LINSHARE_BIN="${LINSHARE_HOME}/linshare.sh"
LINSHARE_BACKUPDIR="${LINSHARE_HOME}/var/backups"
LINSHARE_JETTYDIR="/tmp"

# -----------------------------------------------------------------------------
#  Functions
# -----------------------------------------------------------------------------

#
# Do backup.
# Works for:
# - PostgreSQL under Debian.
#
backup ()
{
  ret=1
  # Check backup directory
  if [ ! -d "${LINSHARE_BACKUPDIR}" ]; then
    mkdir -p "${LINSHARE_BACKUPDIR}"
  fi
  # Debian
  if [ -f /etc/debian_version ]; then
    # PostgreSQL
    if [ -n "`echo ${LINSHARE_DBDRIVER} | grep -i postgresql`" ]; then
      for database in ${LINSHARE_DBNAME}; do
        file="${LINSHARE_BACKUPDIR}/${database}-`date +%Y%m%d`.sql"
        su - postgres -c "pg_dump ${database}" > ${file}
        ret=$?
        if [ ${ret} -ne 0 ]; then
          break;
        fi
      done
    fi
  fi
  if [ ${ret} -eq 0 ]; then
    echo "OK"
  else
    echo "FAILED"
  fi
  exit ${ret}
}

#
# Purge Jetty temporary files.
#
purge ()
{
  cmd="ls -1rt ${LINSHARE_JETTYDIR}/j[0-9]*"
  max="`${cmd} | wc -l`"
  nb="`expr ${max} - 2`"
  if [ `expr ${nb} \< 2` -eq 0 ]; then
    rm `${cmd} | head -n ${nb}`
  fi
}

#
# Call LinShare script.
#
run ()
{
  ${LINSHARE_BIN} $* > /dev/null 2>&1
  if [ $? -eq 0 ]; then
    echo "OK"
  else
    echo "FAILED"
  fi
}

#
# Print status. Heartbeat compliant.
# 0: RUNNING, 3:STOPPING
#
status ()
{
  ${LINSHARE_BIN} check > /dev/null 2>&1
  if [ $? -eq 0 ]; then
    echo "OK"
    exit 0
  else
    echo "KO"
    exit 3
  fi
}

# -----------------------------------------------------------------------------
#  Main
# -----------------------------------------------------------------------------

ACTIONS=""

case "$1" in
  "start")
    ACTIONS="start"
    ;;
  "stop")
    ACTIONS="stop"
    ;;
  "restart")
    ACTIONS="stop start"
    ;;
  "backup")
    ACTIONS="backup"
    ;;
  "purge")
    ACTIONS="purge"
    ;;
  "status")
    ACTIONS="status"
    ;;
  *)
    echo "`basename $0` {start|stop|restart|backup|status}"
    exit 2
    ;;
esac

if [ -f /etc/default/`basename $0` ]; then
  . /etc/default/`basename $0`;
fi

for action in ${ACTIONS}; do
  case "${action}" in
    "start")
      echo -n "Starting LinShare... "
      run $*
      ;;
    "stop")
      echo -n "Stopping LinShare... "
      run $*
      ;;
    "backup")
      echo -n "Backup in progress... "
      backup
      ;;
    "purge")
      purge
      ;;
    "status")
      status
      ;;
  esac
done