#!/bin/bash
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2007-2022  IPFire Team  <info@ipfire.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/>.       #
#                                                                             #
###############################################################################

. /etc/sysconfig/rc
. ${rc_functions}

# Stop if nothing is configured
if [ ! -s "/var/ipfire/ppp/settings" ];then
 exit 0
fi

eval $(/usr/local/bin/readhash /var/ipfire/ppp/settings)

MAX=160
ATTEMPTS=0
COUNT=0
if [ ! $HOLDOFF ]; then
	HOLDOFF=30
fi

if [ "$RECONNECTION" = "dialondemand" ]; then
	exit 0
fi

msg_log () {
	logger -t $(basename $0)[$$] $*
}

msg_log "Connectd ($1) started with PID $$"


if [ -s "/var/ipfire/red/keepconnected" ]; then
	ATTEMPTS=$(cat /var/ipfire/red/keepconnected)
else
	echo "0" > /var/ipfire/red/keepconnected
fi

case "$1" in
  start)
  	boot_mesg "Starting connection daemon..."
  	echo_ok

		while [ "$COUNT" -lt "$MAX" ]; do
			if [ ! -e "/var/ipfire/red/keepconnected" ]; then
				# User pressed disconnect in gui
				msg_log "Stopping by user request. Exiting."
				/etc/rc.d/init.d/network stop red
				exit 0
			fi
			if [ -e "/var/ipfire/red/active" ]; then
				# Successfully connected in time
				echo "0" > /var/ipfire/red/keepconnected
				msg_log "System is online. Exiting."; exit 0
			fi
			if ( ! ps ax | grep -q [p]ppd ); then
				msg_log "No pppd is running. Trying reconnect."
				break # because pppd died
			fi
			sleep 5
			(( COUNT+=1 ))
		done

		/etc/rc.d/init.d/network stop red

		(( ATTEMPTS+=1 ))
		msg_log "Reconnecting: Attempt ${ATTEMPTS} of ${MAXRETRIES}"
		if [ "${ATTEMPTS}" -ge "${MAXRETRIES}" ]; then
			echo "0" > /var/ipfire/red/keepconnected
			if [ "$BACKUPPROFILE" != '' ]; then
				rm -f /var/ipfire/ppp/settings
				cp "/var/ipfire/ppp/settings-${BACKUPPROFILE}" /var/ipfire/ppp/settings
				msg_log "Switched to backup profile ${BACKUPPROFILE}"
				# to be shure the right secrets are used
        eval $(/usr/local/bin/readhash /var/ipfire/ppp/settings-${BACKUPPROFILE})
        echo "'$USERNAME' * '$PASSWORD'" > /var/ipfire/ppp/secrets
			else
				msg_log "No backup profile given. Exiting."
				exit 0
			fi
		else
			echo $ATTEMPTS > /var/ipfire/red/keepconnected
			sleep ${HOLDOFF}
		fi
		/etc/rc.d/init.d/network start red >/dev/tty12 2>&1 </dev/tty12 &
		;;

  reconnect)
		while ( ps ax | grep -q [p]ppd ); do
			msg_log "There is a pppd still running. Waiting 2 seconds for exit."
			sleep 2
		done

		/etc/rc.d/init.d/network restart red
		;;

  *)
		echo "Usage: $0 {start|reconnect}"
		exit 1
	;;
esac

msg_log "Exiting gracefully connectd with PID $$."