#!/bin/bash
# +--------------------------------------------------------------------+
# EFA Backup
# Version 20140201
# +--------------------------------------------------------------------+
# Copyright (C) 2012~2014  http://www.efa-project.org
#
# 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 3 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.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
# +--------------------------------------------------------------------+
action="$1"

#----------------------------------------------------------------#
# Variables
#----------------------------------------------------------------#
BACKUPDIR="/var/EFA/backup"
MYSQLROOTPWD="`grep MYSQLROOTPWD /etc/EFA-Config | sed 's/.*://'`"
TMPDIR="/tmp"
DAYSTOKEEP=5

#----------------------------------------------------------------#

#----------------------------------------------------------------#
# Begin Backup Purge
#----------------------------------------------------------------#
function start_purge()
{

  echo "Purging Backups older than $DAYSTOKEEP..."
  # Do not purge if no recent backups are present
  if [[ -n `find $BACKUPDIR -type f -mtime -$((DAYSTOKEEP+1))` ]]; then
    find $BACKUPDIR -type f -mtime +$DAYSTOKEEP -exec rm -f {} \;
    echo "Old backups purged."
  else
    echo "No recent backups are present!  Skipping purge."
  fi
} 
#----------------------------------------------------------------#

#----------------------------------------------------------------#
# Begin Backup
#----------------------------------------------------------------#
function start_backup()
{
  # Get current date and time
  CDATE=`date +%m%d%Y`
  CTIME=`date +%H%M%S`

  echo "Beginning System Backup at $CDATE $CTIME"

  WORKINGDIR=$TMPDIR/$CDATE$CTIME/backup

  mkdir -p $WORKINGDIR

  # Perform SQL Dump
  mkdir -p $WORKINGDIR/sql
  mysqldump --user=root --password=$MYSQLROOTPWD --all-databases --events > $WORKINGDIR/sql/backup.sql
  
  # Backup Postfix Settings
  mkdir -p $WORKINGDIR/etc/postfix/ssl
  cp -a /etc/postfix/*cf $WORKINGDIR/etc/postfix
  cp -a /etc/postfix/*access $WORKINGDIR/etc/postfix
  cp -a /etc/postfix/transport $WORKINGDIR/etc/postfix
  cp -a /etc/postfix/virtual $WORKINGDIR/etc/postfix
  cp -a /etc/postfix/sasl_passwd $WORKINGDIR/etc/postfix
  cp -a /etc/postfix/relocated $WORKINGDIR/etc/postfix
  cp -a /etc/postfix/access $WORKINGDIR/etc/postfix
  cp -a /etc/postfix/canonical $WORKINGDIR/etc/postfix
  cp -a /etc/postfix/generic $WORKINGDIR/etc/postfix
  cp -a /etc/postfix/header_checks $WORKINGDIR/etc/postfix
  cp -a /etc/postfix/ssl/smtpd.pem $WORKINGDIR/etc/postfix/ssl

  # Backup EFA-Config
  cp -a /etc/EFA-Config $WORKINGDIR/etc
  
  # Backup sysconfig
  mkdir $WORKINGDIR/etc/sysconfig/
  cp -ra /etc/sysconfig/* $WORKINGDIR/etc/sysconfig 
  
  # Backup portions of /etc
  cp -a /etc/passwd $WORKINGDIR/etc
  cp -a /etc/fstab $WORKINGDIR/etc
  cp -a /etc/shadow $WORKINGDIR/etc
  cp -a /etc/clamd.conf $WORKINGDIR/etc
  cp -a /etc/hosts* $WORKINGDIR/etc
  cp -a /etc/networks $WORKINGDIR/etc
  cp -a /etc/my.cnf $WORKINGDIR/etc
  cp -a /etc/php.ini $WORKINGDIR/etc
  cp -a /etc/resolv* $WORKINGDIR/etc
  cp -a /etc/sudo.conf $WORKINGDIR/etc
  cp -a /etc/webmin.config $WORKINGDIR/etc
  
  # Backup MailScanner settings
  mkdir -p $WORKINGDIR/etc/MailScanner
  cp -ra /etc/MailScanner/* $WORKINGDIR/etc/MailScanner
  
  # Backup Cron
  cp -ra /etc/cron* $WORKINGDIR/etc

  # Backup SQLGrey
  mkdir -p $WORKINGDIR/etc/sqlgrey
  cp -a /etc/sqlgrey/* $WORKINGDIR/etc/sqlgrey
  
  # Backup SSH Config
  mkdir -p $WORKINGDIR/etc/ssh
  cp -a /etc/ssh/* $WORKINGDIR/etc/ssh

  # Backup pki
  mkdir -p $WORKINGDIR/etc/pki
  cp -ra /etc/pki/* $WORKINGDIR/etc/pki

  # Backup MailWatch Config
  mkdir -p $WORKINGDIR/var/www/html/mailscanner
  cp -a /var/www/html/mailscanner/conf.php $WORKINGDIR/var/www/html/mailscanner

  # Backup Apache
  mkdir -p $WORKINGDIR/etc/httpd
  cp -ra /etc/httpd/* $WORKINGDIR/etc/httpd

  # Gzip tarball the collection
  tar -cpzf $TMPDIR/backup-$CDATE-$CTIME.tar.gz -C $TMPDIR/$CDATE$CTIME .
  rm -rf $TMPDIR/$CDATE$CTIME
  mv $TMPDIR/backup-$CDATE-$CTIME.tar.gz $BACKUPDIR
  chmod 0600 $BACKUPDIR/backup-$CDATE-$CTIME.tar.gz

  echo "Backup Completed at `date +%m%d%Y\ %H%M%S`"
}
#----------------------------------------------------------------#

#----------------------------------------------------------------#
# Check if we are root
#----------------------------------------------------------------#
function user_check()
{
  if [ `whoami` == root ]
    then
      echo "[EFA] Good you are root"
      if [[ ${action} == "-backup" ]]; then
        start_backup
      elif [[ ${action} == "-purge" ]]; then
        start_purge
      fi
  else
    echo "[EFA] Please become root to run this backup"
    exit 0
  fi
}
#----------------------------------------------------------------#

#----------------------------------------------------------------#
# show the usage
#----------------------------------------------------------------#
function show_usage()
{
  echo "Usage: $0 [option]"
  echo "Where [option] is:"
  echo ""
  echo "-backup"
  echo "   Initiate backup"
  echo ""
  echo "-purge"
  echo "   Purge oldest backups"
  echo ""
}
#----------------------------------------------------------------#

#----------------------------------------------------------------#
# Parse action
#----------------------------------------------------------------#
function parse_action()
{
  case $action in
      -backup)
        user_check
        ;;
      -purge)
        user_check
        ;;
      *)
        show_usage
        ;;
  esac
  exit 0
}
#----------------------------------------------------------------#

#----------------------------------------------------------------#
# Main function
#----------------------------------------------------------------#
function main()
{
  if [ "X${action}" == "X" ]
    then
      show_usage
      exit 0
    else
      parse_action
  fi
}
#----------------------------------------------------------------#

#----------------------------------------------------------------#
# Run main
#----------------------------------------------------------------#
main
#----------------------------------------------------------------#