#!/bin/bash
################################################################################
# Eurecom OpenAirInterface core network
# Copyright(c) 1999 - 2014 Eurecom
#
# This program is free software; you can redistribute it and/or modify it
# under the terms and conditions of the GNU General Public License,
# version 2, as published by the Free Software Foundation.
#
# This program is distributed in the hope 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, write to the Free Software Foundation, Inc.,
# 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
#
# The full GNU General Public License is included in this distribution in
# the file called "COPYING".
#
# Contact Information
# Openair Admin: openair_admin@eurecom.fr
# Openair Tech : openair_tech@eurecom.fr
# Forums       : http://forums.eurecom.fsr/openairinterface
# Address      : EURECOM,
#                Campus SophiaTech,
#                450 Route des Chappes,
#                CS 50193
#                06904 Biot Sophia Antipolis cedex,
#                FRANCE
################################################################################
# file start_enb.bash
# brief
# author Lionel Gauthier
# company Eurecom
# email: lionel.gauthier@eurecom.fr
###########################################
# INPUT PARAMETER FOR THIS SCRIPT: 'rebuild', 'build' or implicit 'start'
#########################################
# This script start a ENB  
# The MME is provided to EURECOM by external partner, and should be started by your own.


###########################################################
# Parameters
###########################################################
declare MAKE_LTE_ACCESS_STRATUM_TARGET_RT="lte-softmodem HARD_RT=1 ENABLE_ITTI=1 USE_MME=R10 LINK_PDCP_TO_GTPV1U=1 DISABLE_XER_PRINT=1 SECU=1 RRC_MSG_PRINT=1 "

###########################################################
THIS_SCRIPT_PATH=$(dirname $(readlink -f $0))
source $THIS_SCRIPT_PATH/utils.bash
###########################################################
declare -x CONFIG_FILE_DIR=./CONF

cd $THIS_SCRIPT_PATH

#######################################################
# FIND CONFIG FILE
#######################################################
SEARCHED_CONFIG_FILE_ENB="enb*.conf"
CONFIG_FILE_ENB=$THIS_SCRIPT_PATH/`find $CONFIG_FILE_DIR -iname $SEARCHED_CONFIG_FILE_ENB`
if [ -f $CONFIG_FILE_ENB ]; then
    echo_warning "eNB config file found is now $CONFIG_FILE_ENB"
else
    echo_error "eNB config file not found, exiting"
    exit 1
fi

#######################################################
# SOURCE CONFIG FILE
#######################################################
rm -f /tmp/source.txt
VARIABLES="
           ENB_INTERFACE_NAME_FOR_S1_MME\|\
           ENB_IPV4_ADDRESS_FOR_S1_MME\|\
           ENB_INTERFACE_NAME_FOR_S1U\|\
           ENB_IPV4_ADDRESS_FOR_S1U\|\
           hard_real_time"

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

declare ENB_IPV4_NETMASK_FOR_S1_MME=$(       echo $ENB_IPV4_ADDRESS_FOR_S1_MME        | cut -f2 -d '/')
declare ENB_IPV4_NETMASK_FOR_S1U=$(          echo $ENB_IPV4_ADDRESS_FOR_S1U        | cut -f2 -d '/')

ENB_IPV4_ADDRESS_FOR_S1_MME=$(               echo $ENB_IPV4_ADDRESS_FOR_S1_MME        | cut -f1 -d '/')
ENB_IPV4_ADDRESS_FOR_S1U=$(                  echo $ENB_IPV4_ADDRESS_FOR_S1U           | cut -f1 -d '/')

is_openvswitch_interface $ENB_INTERFACE_NAME_FOR_S1_MME  \
                               $ENB_INTERFACE_NAME_FOR_S1U

if [ $? -eq 1 ]; then
   echo_success "Found open-vswitch network configuration"
else
    is_vlan_interface $ENB_INTERFACE_NAME_FOR_S1_MME \
                      $ENB_INTERFACE_NAME_FOR_S1U
    if [ $? -eq 1 ]; then
        echo_success "Found VLAN network configuration"
        clean_enb_vlan_network
        build_enb_vlan_network
        test_enb_vlan_network
    else
        is_real_interface  $ENB_INTERFACE_NAME_FOR_S1_MME \
                      $ENB_INTERFACE_NAME_FOR_S1U
        if [ $? -eq 1 ]; then
            echo_success "Found standart network configuration"
        else
            echo_error "Cannot find open-vswitch network configuration or VLAN network configuration or standard network configuration"
            exit 1
        fi
    fi 
fi

clean() {
    cd $OPENAIR_TARGETS/ARCH/EXMIMO/DRIVER/eurecom && make clean           || exit 1
    cd $OPENAIR_TARGETS/ARCH/EXMIMO/USERSPACE/OAI_FW_INIT && make clean    || exit 1
    make --directory=$OPENAIR_TARGETS/RTAI/USER clean                      || exit 1
    find $OPENAIR_TARGETS/RTAI/USER -name *.a -delete
    find $OPENAIR_TARGETS/RTAI/USER -name *.d -delete
    find $OPENAIR_TARGETS/RTAI/USER -name *.o -delete
    find $OPENAIR_TARGETS/RTAI/USER -name *.ko -delete
}

build() {
    cd $OPENAIR_TARGETS/ARCH/EXMIMO/DRIVER/eurecom && make -j`grep -c ^processor /proc/cpuinfo ` || exit 1
    cd $OPENAIR_TARGETS/ARCH/EXMIMO/USERSPACE/OAI_FW_INIT && make -j`grep -c ^processor /proc/cpuinfo ` || exit 1
    make --directory=$OPENAIR_TARGETS/RTAI/USER $MAKE_LTE_ACCESS_STRATUM_TARGET_RT -j`grep -c ^processor /proc/cpuinfo ` || exit 1
    make --directory=$OPENAIR_TARGETS/RTAI/USER $MAKE_LTE_ACCESS_STRATUM_TARGET_RT  || exit 1
}

##################################################
# process script parameters
##################################################
for arg in "$@"
do
    case "$arg" in
    rebuild)  clean;build
            ;;

    rebuildonly)  clean;build; exit 0
            ;;

    build)   build
            ;;
            
    buildonly)   build; exit 0 
            ;;
            
    *)      
            ;;
    esac
done



##################################################
# LAUNCH eNB 
##################################################
pkill oaisim
pkill tshark

if [ ! -d $THIS_SCRIPT_PATH/OUTPUT ]; then
    mkdir -m 777 -p $THIS_SCRIPT_PATH/OUTPUT
fi


ITTI_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/itti_enb_rf.$HOSTNAME.log
rotate_log_file $ITTI_LOG_FILE
    
STDOUT_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/stdout_enb_rf.$HOSTNAME.log
rotate_log_file $STDOUT_LOG_FILE
rotate_log_file $STDOUT_LOG_FILE.filtered
    
PCAP_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/tshark_enb_rf.$HOSTNAME.pcap
rotate_log_file $PCAP_LOG_FILE


cd $THIS_SCRIPT_PATH

if [ x$ENB_INTERFACE_NAME_FOR_S1_MME == x$ENB_INTERFACE_NAME_FOR_S1U ]; then 
    nohup tshark -i $ENB_INTERFACE_NAME_FOR_S1_MME -w $PCAP_LOG_FILE &
else
    nohup tshark -i $ENB_INTERFACE_NAME_FOR_S1_MME -i $ENB_INTERFACE_NAME_FOR_S1U -w $PCAP_LOG_FILE &
fi


echo_warning "HARD REAL TIME MODE"
PATH=$PATH:/usr/realtime/bin
    
cd $THIS_SCRIPT_PATH


if [ ! -f /tmp/init_rt_done.tmp ]; then
    echo_warning "STARTING REAL TIME (RTAI)"
    insmod /usr/realtime/modules/rtai_hal.ko     > /dev/null 2>&1
    insmod /usr/realtime/modules/rtai_sched.ko   > /dev/null 2>&1
    insmod /usr/realtime/modules/rtai_sem.ko     > /dev/null 2>&1
    insmod /usr/realtime/modules/rtai_fifos.ko   > /dev/null 2>&1
    insmod /usr/realtime/modules/rtai_mbx.ko     > /dev/null 2>&1
    echo "1" > /sys/bus/pci/rescan
    touch /tmp/init_rt_done.tmp
    chmod 666 /tmp/init_rt_done.tmp
else
    echo_warning "REAL TIME FOUND STARTED (RTAI)"
fi

cd $OPENAIR_TARGETS/RTAI/USER
bash ./init_exmimo2.sh
echo_warning "STARTING SOFTMODEM..."
#cat /dev/rtf62 > $STDOUT_LOG_FILE &
./lte-softmodem -K $ITTI_LOG_FILE -O $CONFIG_FILE_ENB --ulsch-max-errors=20 2>&1
cd $THIS_SCRIPT_PATH
sync
pkill tshark
pkill cat
sync
#cat $STDOUT_LOG_FILE |  grep -v '[PHY]' | grep -v '[MAC]' | grep -v '[EMU]' | \
#                        grep -v '[OCM]' | grep -v '[OMG]' | \
#                        grep -v 'RLC not configured' | grep -v 'check if serving becomes' | \
#                        grep -v 'mac_rrc_data_req'   | grep -v 'BCCH request =>' > $STDOUT_LOG_FILE.filtered