#!/bin/bash
################################################################################
#   OpenAirInterface
#   Copyright(c) 1999 - 2014 Eurecom
#
#    OpenAirInterface 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.
#
#
#    OpenAirInterface 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 OpenAirInterface.The full GNU General Public License is
#    included in this distribution in the file called "COPYING". If not,
#    see <http://www.gnu.org/licenses/>.
#
#  Contact Information
#  OpenAirInterface Admin: openair_admin@eurecom.fr
#  OpenAirInterface Tech : openair_tech@eurecom.fr
#  OpenAirInterface Dev  : openair4g-devel@eurecom.fr
#
#  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
#
################################################################################
# file start_sgi.bash
# brief
# author Lionel Gauthier
# company Eurecom
# email: lionel.gauthier@eurecom.fr
#

#########################################
# INPUT OF THIS SCRIPT:
# THE DIRECTORY WHERE ARE LOCATED THE CONFIGURATION FILES
#########################################


###########################################################
THIS_SCRIPT_PATH=$(dirname $(readlink -f $0))
. $THIS_SCRIPT_PATH/utils.bash
. $THIS_SCRIPT_PATH/interfaces.bash
. $THIS_SCRIPT_PATH/networks.bash
###########################################################

if [ $# -eq 1 ]; then
    declare -x CONFIG_FILE_DIR=$1
    if [ ! -d $CONFIG_FILE_DIR ]; then
        echo_error "ERROR while invoking this script, as first argument to this script you have to provide the path to a directory (./CONF/VLAN.VIRTUAL.$HOSTNAME for example) containing valid epc and enb config files"
        exit 1
    fi
else
    echo_error "ERROR while invoking this script, as first argument to this script  you have to provide the path to a directory  (./CONF/VLAN.VIRTUAL.$HOSTNAME for example) containing valid epc and enb config files"
    exit 1
fi


cd $THIS_SCRIPT_PATH
#######################################################
# FIND CONFIG FILE
#######################################################
SEARCHED_CONFIG_FILE_EPC="epc*$HOSTNAME.conf"
CONFIG_FILE_EPC=`find $CONFIG_FILE_DIR -iname $SEARCHED_CONFIG_FILE_EPC`
if [ -f $CONFIG_FILE_EPC ]; then
    echo_warning "EPC config file found is now $CONFIG_FILE_EPC"
else
    echo_error "EPC config file not found, exiting (searched for $SEARCHED_CONFIG_FILE_EPC)"
    exit 1
fi



#######################################################
# SOURCE CONFIG FILE
#######################################################
rm -f /tmp/source.txt
VARIABLES="
           PGW_INTERFACE_NAME_FOR_SGI\|\
           PGW_IPV4_ADDR_FOR_SGI"

VARIABLES=$(echo $VARIABLES | sed -e 's/\\r//g')
VARIABLES=$(echo $VARIABLES | tr -d ' ')
cat $CONFIG_FILE_EPC | grep -w "$VARIABLES"| tr -d " " | tr -d ";" > /tmp/source.txt
source /tmp/source.txt

declare PGW_IPV4_NETMASK_FOR_SGI=$(          echo $PGW_IPV4_ADDR_FOR_SGI              | cut -f2 -d '/')
PGW_IPV4_ADDR_FOR_SGI=$(                     echo $PGW_IPV4_ADDR_FOR_SGI              | cut -f1 -d '/')

bash_exec "iptables -P INPUT ACCEPT"
bash_exec "iptables -F INPUT"
bash_exec "iptables -P OUTPUT ACCEPT"
bash_exec "iptables -F OUTPUT"
bash_exec "iptables -P FORWARD ACCEPT"
bash_exec "iptables -F FORWARD"
bash_exec "iptables -t nat -F"
bash_exec "iptables -t mangle -F"
bash_exec "iptables -t filter -F"
bash_exec "iptables -t raw -F"

bash_exec "iptables -A OUTPUT  -o eth1                           --protocol sctp -j DROP"


create_sgi_vlans