<#!/bin/bash

if [[ "${VPN_BASH}" != "" ]]
then
    return
else
    declare -g VPN_BASH=1
fi


# Includes
#-----------------------------------------------------------------------------------------------------------------------------------

. /usr/global/lib/network.bash


# Global Variable
#-----------------------------------------------------------------------------------------------------------------------------------

declare -Ag VPN_JOB_TAB
declare -g  VPN_STATUS_FILE="/var/lib/rx3-vpn.status"


if [ ! -v LOG ] || [[ "${LOG}" == "" ]]
then
    export LOG=":"
fi


#--------------------------------------------------------------------------------------------------------------------------
# vpn_init
#--------------------------------------------------------------------------------------------------------------------------

vpn_init()
{
    network_init

    file_dir_init ${VPN_STATUS_FILE} root apache
}


#--------------------------------------------------------------------------------------------------------------------------
# vpn_deinit
#--------------------------------------------------------------------------------------------------------------------------

vpn_deinit()
{
    network_deinit
}


#--------------------------------------------------------------------------------------------------------------------------
# vpn_start
#--------------------------------------------------------------------------------------------------------------------------

vpn_start()
{
    local job_id=0
    local job_nb
    local dst_id
    local config_file
    local mng_port

    
    for dst_id in ${NETWORK_DST_ID_LIST}
    do
        network_dst_tab_get ${dst_id}
        
        if [[ "${dst_type}" == "1" ]]
        then
            config_file="${VPN_CONFIG_FILE/DEVICE/${dst_device}}"
            mng_port=$((2330+$(echo ${dev} | sed -e "s/tun//")))
            
            tab_assign VPN_JOB_TAB "${dst_id},PId" "0"
            tab_assign VPN_JOB_TAB "${dst_id},Cmd" "/usr/sbin/openvpn --config ${config_file} --dev ${dst_device} --daemon"

            ${DEBUG} \rm  -f ${config_file} 2>/dev/null
	    ${DEBUG} sed  -e "s/TARGET-CFG/${dst_config}-client.conf/" -e "s/VPN-DEVICE/${dst_device}/" -e "s/MNG-PORT/${mng_port}/" <${template_file} >${config_file}

            echo >>${LOG_FILE} $(date) "Loading config: VPN[${dst_id}]   Name: [${dst_name}]  Cmd: [${VPN_JOB_TAB["${job_id},Cmd"]}]"
	    job_id=$(( ${job_id} + 1))
        fi
    done
    
    job_nb=${job_id}

    
    # Main Loop
    
    while true
    do
        while [[ "${job_id}" -lt "${job_nb}" ]]
        do
            ${DEBUG} kill -0 ${VPN_JOB_TAB["${job_id},PId"]} 2>/dev/null
            rc=$?

            if [[ ${VPN_JOB_TAB["${job_id},PId]"]} == 0 ]] || [[ $rc != 0 ]]
            then
	        echo >> ${LOG_FILE} $(date) "Restarting Cmd: [${VPN_JOB_TAB["${job_id}",Cmd]}]..."

	        eval ${DEBUG} ${VPN_JOB_TAB["${job_id},Cmd"]}
            
	         VPN_JOB_TAB["${job_id},PId"]="$( ps aux | grep "${VPN_JOB_TAB["Cmd,${job_id}"]}" | grep -v grep | head -1 | awk '{print $2}')"
	        VPN_JOB_TAB["${job_id},Date"]="$(date)"
  
	        echo >> ${LOG_FILE} $(date) "PId: [${VPN_JOB_TAB["${job_id},PId"]}]!"
            fi

            job_id=$(( ${job_id} + 1))
        done
        
	job_id=0
	>${VPN_STATUS_FILE}

	while [[ ${job_id} -lt ${job_nb} ]]
        do
	    echo >>${VPN_STATUS_FILE} "PId: [${VPN_JOB_TAB["${job_id},PId"]}]   Date: [${VPN_JOB_TAB["${job_id},Date"]}]   Cmd: [${VPN_JOB_TAB["${job_id},Date"]}]"
	    job_id=$(( ${job_id} + 1))
	done

	job_id=0
        
	sleep 30

        network_dst_address_refresh_all
    done
}


#--------------------------------------------------------------------------------------------------------------------------
# vpn_stop
#--------------------------------------------------------------------------------------------------------------------------

vpn_stop()
{
    echo >> ${LOG_FILE} $(date) "Killing daemon: [$(cat ${PID_FILE})]..."
    
    kill -15 $(cat ${PID_FILE})

    while read stat
    do
	echo >> ${LOG_FILE} $(date) "Killing VPN: [$stat] [$(echo "$stat" | sed -e 's/PId: \[//' -e 's/\].*//')]..."
	${DEBUG} kill -15 $(echo "$stat" | sed -e 's/PId: \[//' -e 's/\].*//')
    done <${VPN_STATUS_FILE}
}


#--------------------------------------------------------------------------------------------------------------------------
# vpn_status
#--------------------------------------------------------------------------------------------------------------------------

vpn_status()
{
    if [ -f ${VPN_STATUS_FILE} ]
    then
	cat ${VPN_STATUS_FILE}
    fi
}