#!/bin/sh
########################################################################
# Begin
#
# Description : RED Device Script
#
# Authors     : Michael Tremer - mitch@ipfire.org
#               Maniacikarus - maniacikarus@ipfire.org
# Inspired by : Nathan Coulson - nathan@linuxfromscratch.org
#               Kevin P. Fleming - kpfleming@linuxfromscratch.org
#
# Version     : 01.00
#
# Notes       : 
#
########################################################################

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

#Define some defaults
RED_VDSL_INET_VLAN=7
RED_VDSL_IPTV_VLAN=8
RED_VDSL_IPTV_DISABLE=0

eval $(/usr/local/bin/readhash /var/ipfire/main/settings)
if [ "$RRDLOG" == "" ]; then
	RRDLOG=/var/log/rrd
fi

eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
eval $(/usr/local/bin/readhash /var/ipfire/dns/settings)
eval $(/usr/local/bin/readhash /var/ipfire/mac/settings)

MAC=$(tr - : <<<$MAC)

TYPE="${RED_TYPE}"
DEVICE="${RED_DEV}"

if [ "$TYPE" == "STATIC" ] || [ "$TYPE" == "DHCP" ]; then
	if [ "$DEVICE" == "" ]; then
		boot_mesg "No device for red network. Please run setup." ${FAILURE}
		echo_failure
		[ "${1}" == "start" ] && exit 0
	fi
fi
	
if [ "${TYPE}" == "STATIC" ]; then
	if [ "${DEVICE}" != "${GREEN_DEV}" ]; then
		ADDRESS="${RED_ADDRESS}"
		BROADCAST="${RED_BROADCAST}"
		NETADDRESS="${RED_NETADDRESS}"
		NETMASK="${RED_NETMASK}"
	else
		ADDRESS="${GREEN_ADDRESS}"
		BROADCAST="${GREEN_BROADCAST}"
		NETADDRESS="${GREEN_NETADDRESS}"
		NETMASK="${GREEN_NETMASK}"
	fi
	GATEWAY="${DEFAULT_GATEWAY}"
	# DNS1
	# DNS2

	if [ -z "${BROADCAST}" ]; then
		boot_mesg "BROADCAST variable missing, cannot continue." ${FAILURE}
		echo_failure
		exit 1
	fi
	if [ -n "${ADDRESS}" -a -n "${NETMASK}" ]; then
		PREFIX=`whatmask ${NETMASK} | grep -e ^CIDR | awk -F': ' '{ print $2 }' | cut -c 2-`
		args="${args} ${ADDRESS}/${PREFIX} broadcast ${BROADCAST}"
	else
		boot_mesg "ADDRESS and/or NETMASK variable missing from input, cannot continue." ${FAILURE}
		echo_failure
		exit 1
	fi
fi

PIDFILE="/var/run/dhcpcd-${DEVICE}.pid"
LEASEINFO="/var/ipfire/dhcpc/dhcpcd-${DEVICE}.info"
DHCP_START="-N -R -L /var/ipfire/dhcpc -c /var/ipfire/dhcpc/dhcpcd.exe "
DHCP_STOP="-k -c /var/ipfire/dhcpc/dhcpcd.exe "

case "${1}" in
	start)
		if [ "${DEVICE}" != "${GREEN_DEV}" ] && [ "${DEVICE}" != "" ]; then
			boot_mesg "Bringing up the ${DEVICE} interface..."
			boot_mesg_flush
			# Check if an interface is there...
			if ip link show ${DEVICE} > /dev/null 2>&1; then
				link_status=`ip link show ${DEVICE} 2> /dev/null`
				if [ -n "${link_status}" ]; then
					if ! echo "${link_status}" | grep -q UP; then
						if [ -n "$MAC" ]; then
							boot_mesg "Setting mac address on ${DEVICE} to ${MAC}"	
							ip link set dev ${DEVICE} address ${MAC}
							evaluate_retval		
						fi
						
						ip link set ${DEVICE} up
					fi
				fi
			else
				boot_mesg "Interface ${DEVICE} doesn't exist." ${FAILURE}
				echo_failure
				exit 1
			fi
		fi

		## Create & Enable vnstat
		/usr/bin/vnstat -u -i ${DEVICE} -r --enable --force > /dev/null 2>&1
		
		if [ "${TYPE}" == "STATIC" ]; then
		
			if [ "$DEVICE" != "${GREEN_DEV}" ]; then
				boot_mesg "Adding IPv4 address ${ADDRESS} to the ${DEVICE} interface..."
				ip addr add ${args} dev ${DEVICE}
				evaluate_retval
			fi
			echo -n "${DEVICE}" > /var/ipfire/red/iface
			echo -n "${ADDRESS}"  > /var/ipfire/red/local-ipaddress
			echo -n "${GATEWAY}" > /var/ipfire/red/remote-ipaddress
			grep -v "gateway" /etc/hosts > /tmp/hosts
			echo "$GATEWAY gateway"  >> /tmp/hosts
			mv /tmp/hosts /etc/hosts
			echo -n "${DNS1}" > /var/ipfire/red/dns1
			echo -n "${DNS2}" > /var/ipfire/red/dns2
			touch /var/ipfire/red/active
			
			boot_mesg "Setting up default gateway ${GATEWAY}..."
			ip route add default via ${GATEWAY} dev ${DEVICE}
			evaluate_retval
			
			run_subdir ${rc_base}/init.d/networking/red.up/

			# Configure aliases only if red static
			/usr/local/bin/setaliases

		elif [ "${TYPE}" == "DHCP" ]; then

			if [ -e $LEASEINFO ]; then
				boot_mesg -n "Stopping dhcpcd on the ${DEVICE} interface..."
				. $LEASEINFO
				if [ "$LEASETIME" = "4294967295" ]; then
					# do nothing, just echo ok
					echo ""
					echo_ok
				else
					if [ -n "$DHCP_STOP" ]; then
						/sbin/dhcpcd ${DEVICE} $DHCP_STOP &> /dev/null
						RET="$?"
						if [ "$RET" -eq 0 ]; then
							echo ""
							echo_ok
						elif [ "$RET" -eq 1 ]; then
							boot_mesg "dhcpcd not running!" ${WARNING}
							echo_warning
						else
							echo ""
							echo_failure
						fi
					else
						echo ""
						killproc dhcpcd
					fi
				fi
			fi

			boot_mesg -n "Starting dhcpcd on the ${DEVICE} interface..."		
			echo -n "${DEVICE}" > /var/ipfire/red/iface

			## Create & Enable vnstat
			/usr/bin/vnstat -u -i ${DEVICE} -r --enable --force > /dev/null 2>&1

			# Test to see if there is a stale pid file
			if [ -f "$PIDFILE" ]; then
				ps `cat "$PIDFILE"` | grep dhcpcd > /dev/null
				if [ $? != 0 ]; then
					rm -f /var/run/dhcpcd-${DEVICE}.pid > /dev/null
				else
					boot_mesg "dhcpcd already running!" ${WARNING}
					echo_warning
					exit 2
				fi
			fi
			
			iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i ${DEVICE} -j ACCEPT
			iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i ${DEVICE} -j ACCEPT
			
			if [ -n "${RED_DHCP_HOSTNAME}" ]; then
				DHCP_START+="-h ${RED_DHCP_HOSTNAME} "
	  	fi
	  	
	  	/sbin/dhcpcd ${DEVICE} ${DHCP_START} >/dev/null 2>&1
	  	RET="$?"
	  	
	  	if [ "$RET" = "0" ]; then
				. /var/ipfire/dhcpc/dhcpcd-${DEVICE}.info
				echo ""
				echo_ok
				boot_mesg "           DHCP Assigned Settings for ${DEVICE}:"
				boot_mesg_flush
				boot_mesg "           IP Address:      $IPADDR"
				boot_mesg_flush
				if [ -n "${RED_DHCP_HOSTNAME}" ]; then
					boot_mesg "           Hostname:        $RED_DHCP_HOSTNAME"
					boot_mesg_flush
				fi
				boot_mesg "           Subnet Mask:     $NETMASK"
				boot_mesg_flush
				boot_mesg "           Default Gateway: $GATEWAY"
				boot_mesg_flush
				boot_mesg "           DNS Server:      $DNS"
				boot_mesg_flush
				if [ -n "$DNS0" ] && [ -n "$DNS1" ]; then
					boot_mesg "Overwritting DNS-Server addresses with ${DNS0},${DNS1}"	
					echo -n ${DNS0} > /var/ipfire/red/dns1
					echo -n ${DNS1} > /var/ipfire/red/dns2			
					evaluate_retval		
				else
					echo -n `/etc/rc.d/helper/getdnsfromdhcpc.pl 1` > /var/ipfire/red/dns1
					echo -n `/etc/rc.d/helper/getdnsfromdhcpc.pl 2` > /var/ipfire/red/dns2
				fi

				. /var/ipfire/dhcpc/dhcpcd-${DEVICE}.info
				echo "$IPADDR"  > /var/ipfire/red/local-ipaddress
				grep -v "gateway" /etc/hosts > /tmp/hosts
				echo "$GATEWAY gateway"  >> /tmp/hosts
				mv /tmp/hosts /etc/hosts
				echo "$GATEWAY" > /var/ipfire/red/remote-ipaddress
				touch /var/ipfire/red/active
			else
				echo ""
				$(exit "$RET")
				evaluate_retval
			fi
		
		elif [ "$TYPE" == "PPPOE" ]; then
			
			if ( ps ax | grep -q [p]ppd ); then 
			    boot_mesg "pppd is still running." ${FAILURE}
			    echo_failure
			    exit 1
			fi
			
			eval $(/usr/local/bin/readhash /var/ipfire/ppp/settings)
			
			[ -c "/dev/ppp" ] || mknod /dev/ppp c 108 0
			
			PPP_NIC=${DEVICE}

			if [ "$TYPE" == "vdsl" ]; then
				boot_mesg "Createing VLAN Interface ${DEVICE}.${RED_VDSL_INET_VLAN} ..."
				modprobe 8021q
				vconfig add ${DEVICE} ${RED_VDSL_INET_VLAN}
				PPP_NIC=${DEVICE}.${RED_VDSL_INET_VLAN}
				sleep 0.2
				ip link set ${PPP_NIC} up
				TYPE="pppoe"

				if [ "${RED_VDSL_IPTV_DISABLE}" == "0" ]; then
					PIDFILE="/var/run/dhcpcd-${DEVICE}.${RED_VDSL_IPTV_VLAN}.pid"
					LEASEINFO="/var/ipfire/dhcpc/dhcpcd-${DEVICE}.${RED_VDSL_IPTV_VLAN}.info"

					# Test to see if there is a stale pid file
					if [ -f "$PIDFILE" ]; then
						ps `cat "$PIDFILE"` | grep dhcpcd > /dev/null
						if [ $? != 0 ]; then
							rm -f /var/run/dhcpcd-${DEVICE}.${RED_VDSL_IPTV_VLAN}.pid > /dev/null
						fi
					fi

					if [ ! -f "$PIDFILE" ]; then
						boot_mesg "Createing VLAN Interface ${DEVICE}.${RED_VDSL_IPTV_VLAN} ..."
						vconfig add ${DEVICE} ${RED_VDSL_IPTV_VLAN}
						boot_mesg -n "Starting dhcpcd on the ${DEVICE}.${RED_VDSL_IPTV_VLAN} interface..."
						/sbin/dhcpcd ${DEVICE}.${RED_VDSL_IPTV_VLAN} ${DHCP_START} >/dev/null 2>&1
						RET="$?"

						if [ "$RET" = "0" ]; then
							. /var/ipfire/dhcpc/dhcpcd-${DEVICE}.${RED_VDSL_IPTV_VLAN}.info
							echo ""
							echo_ok
							boot_mesg "           DHCP Assigned Settings for ${DEVICE}.${RED_VDSL_IPTV_VLAN}:"
							boot_mesg_flush
							boot_mesg "           IP Address:      $IPADDR"
							boot_mesg_flush
							boot_mesg "           Hostname:        $RED_DHCP_HOSTNAME"
							boot_mesg_flush
							boot_mesg "           Subnet Mask:     $NETMASK"
							boot_mesg_flush
							boot_mesg "           Default Gateway: $GATEWAY"
							boot_mesg_flush
							boot_mesg "           DNS Server:      $DNS"
							boot_mesg_flush

						else
							echo ""
							$(exit "$RET")
							evaluate_retval
						fi
					fi
				fi
			fi

			if [ "$TYPE" == "pppoeatm" ] || [ "$TYPE" == "pptpatm" ]; then
				PPP_NIC=nas0		
				boot_mesg "Createing ATM-Bridge as $PPP_NIC ..."
				br2684ctl -c0 -e${ENCAP} -a0.${VPI}.${VCI} >/dev/null 2>&1 &
				sleep 1
				if [ "$TYPE" == "pppoeatm" ]; then
					TYPE="pppoe"
				fi
				if [ "$TYPE" == "pptpatm" ]; then
					TYPE="pptp"
				fi
			fi
			if [ "$TYPE" == "pppoe" ] || [ "$TYPE" == "pptp" ]; then
				if [ "$PPP_NIC" == "" ]; then
					boot_mesg "No device for red interface given. Check netsetup or dialprofile!" ${FAILURE}
					echo_failure
					exit 0
				fi
				boot_mesg "Bringing up the $TYPE interface on $PPP_NIC ..."
				ip addr flush dev $PPP_NIC >/dev/null 2>&1
				if [ "$TYPE" == "pptp" ]; then
					if [ "$PPTP_NICCFG" == "dhcp" ]; then

						# Test to see if there is a stale pid file
						if [ -f "$PIDFILE" ]; then
							ps `cat "$PIDFILE"` | grep dhcpcd > /dev/null
							if [ $? != 0 ]; then
								rm -f /var/run/dhcpcd-${DEVICE}.${RED_VDSL_IPTV_VLAN}.pid > /dev/null
							fi
						fi

						if [ ! -f "$PIDFILE" ]; then
							boot_mesg -n "Starting dhcpcd on the ${DEVICE} interface..."
							/sbin/dhcpcd ${DEVICE} -G ${DHCP_START} >/dev/null 2>&1
							RET="$?"

							if [ "$RET" = "0" ]; then
								. /var/ipfire/dhcpc/dhcpcd-${DEVICE}.info
								echo ""
								echo_ok
								boot_mesg "           DHCP Assigned Settings for ${DEVICE}:"
								boot_mesg_flush
								boot_mesg "           IP Address:      $IPADDR"
								boot_mesg_flush
								boot_mesg "           Hostname:        $RED_DHCP_HOSTNAME"
								boot_mesg_flush
								boot_mesg "           Subnet Mask:     $NETMASK"
								boot_mesg_flush
								boot_mesg "           Default Gateway: $GATEWAY"
								boot_mesg_flush
								boot_mesg "           DNS Server:      $DNS"
								boot_mesg_flush

							else
								echo ""
								$(exit "$RET")
								evaluate_retval
							fi
						fi
					else
						ip addr add $PPTP_NICCFG dev $PPP_NIC
					fi
				fi
				ip link set ${PPP_NIC} up
			else
				boot_mesg "Bringing up the PPP via ${TYPE} on ${COMPORT}..."
			fi
			
			###                      ###
			### Configuring the pppd ###
			###                      ###
			
			### Plugin Options
			#			
			if [ "$TYPE" == "pppoe" ]; then
				[ "${METHOD}" == "PPPOE_PLUGIN" ] && \
					PLUGOPTS="plugin /usr/lib/pppd/2.4.4/rp-pppoe.so"
			fi

			### Synchronous Mode
			#
			#PPPOE_SYNC=-s
			#PPPD_SYNC=sync
	
			### Access Concentrator Name
			#
			if [ -n "${CONCENTRATORNAME}" ]; then
				ACNAME="-C ${CONCENTRATORNAME}"
			fi

			### Service Name
			#
			if [ -n "${SERVICENAME}" ]; then
				if [ "${METHOD}" == "PPPOE_PLUGIN" ]; then
					PLUGOPTS+=" rp_pppoe_service ${SERVICENAME}"
				else
					SERVICENAME="-S ${SERVICENAME}"
				fi
			fi

			### Authentication Types
			#
			if [ "${AUTH}" == "pap" ]; then
				AUTH="-chap"
			elif [ "${AUTH}" == "chap" ]; then
				AUTH="-pap"
			else
				AUTH=""
			fi

			### DNS Config
			#
			if [ "${DNS}" == "Automatic" ]; then
				DNS="usepeerdns"
			else
				DNS=""
				echo nameserver=$DNS1 > /etc/ppp/resolv.conf
				echo nameserver=$DNS2 >> /etc/ppp/resolv.conf
			fi

			### Dial On Demand		
			#
			if [ "${RECONNECTION}" != "persistent" ]; then
				if [ "${TIMEOUT}" != "0" ] && [ "${TIMEOUT}" != "" ]; then
					SECONDS=$[${TIMEOUT} * 60]
				else
					SECONDS=300
				fi
				if [ "${RECONNECTION}" == "dialondemand" ]; then
					touch /var/ipfire/red/dial-on-demand
					DEMAND="demand persist idle ${SECONDS} 10.112.112.112:10.112.112.113"
					DEMAND+=" ipcp-accept-remote ipcp-accept-local noipdefault ktune"
				fi
			fi
			
			if [ "$TYPE" == "pppoe" ]; then
				### When using pppoe-plugin the device has to be the last option
				#
				[ "${METHOD}" == "PPPOE_PLUGIN" ] && PLUGOPTS+=" $PPP_NIC"
			fi
			
			if [ "$TYPE" == "modem" ]; then
				PLUGOPTS=" /dev/${COMPORT} ${DTERATE} connect /etc/ppp/dialer lock modem crtscts"
				METHOD="PPPOE_PLUGIN"
			elif [ "$TYPE" == "serial" ]; then
				PLUGOPTS=" /dev/${COMPORT} ${DTERATE} connect /bin/true lock modem crtscts"
				METHOD="PPPOE_PLUGIN"
			fi
		
			### Standard PPP options we always use
			#
			PPP_STD_OPTIONS="$PLUGOPTS $DNS defaultroute noipdefault noauth"
			PPP_STD_OPTIONS+=" default-asyncmap hide-password nodetach mtu ${MTU}"
			PPP_STD_OPTIONS+=" mru ${MTU} noaccomp nodeflate nopcomp novj novjccomp"
			PPP_STD_OPTIONS+=" nobsdcomp user ${USERNAME} lcp-echo-interval 20"
			PPP_STD_OPTIONS+=" lcp-echo-failure 3 ${AUTH}"
				
			### Debugging
			#
			if [ "${DEBUG}" == "on" ]; then
				DEBUG="debug"
			else
				DEBUG=""
			fi
			
			### PPPoE invocation
			#
			if [ "$TYPE" == "pppoe" ]; then
				PPPOE_CMD="/usr/sbin/pppoe -p /var/run/ppp-ipfire.pid.pppoe -I $PPP_NIC"
				PPPOE_CMD+=" -T 80 -U $PPPOE_SYNC $ACNAME $SERVICENAMEOPT"
			fi

			### PPTP ###
			#
			if [ "$TYPE" == "pptp" ]; then
				PPPOE_CMD="pptp $PPTP_PEER --nolaunchpppd"
				METHOD=""
			fi
			
			### Run everything
			#
			if [ "$METHOD" == "PPPOE_PLUGIN" ]; then
				/usr/sbin/pppd $PPP_STD_OPTIONS $DEBUG $DEMAND >/dev/null 2>&1 &
				evaluate_retval
				# echo PLUGIN: /usr/sbin/pppd $PPP_STD_OPTIONS $DEBUG $DEMAND
			else
				/usr/sbin/pppd pty "$PPPOE_CMD" $PPP_STD_OPTIONS $DEBUG $DEMAND $PPPD_SYNC >/dev/null 2>&1 &
				evaluate_retval
				# echo PPP: /usr/sbin/pppd pty "$PPPOE_CMD" $PPP_STD_OPTIONS $DEBUG $DEMAND $PPPD_SYNC
			fi
			## Create & Enable vnstat
			/usr/bin/vnstat -u -i ppp0 -r --enable --force > /dev/null 2>&1
			/etc/rc.d/init.d/connectd start
			# Add a NaN value to ppp0 rrd to supress spikes at reconnect
			rrdtool update $RRDLOG/collectd/localhost/interface/if_octets-ppp0.rrd \
				$(date +%s):: > /dev/null 2>&1
			exit 0
		fi
		;;

	stop)
		if [ "$TYPE" == "STATIC" ]; then
			boot_mesg "Stopping default gateway ${GATEWAY}..."
			ip route del default via ${GATEWAY} >/dev/null 2>&1
			echo_ok
			if [ "$DEVICE" != "${GREEN_DEV}" ]; then
				boot_mesg "Removing IPv4 addresses from the ${DEVICE} interface..."
				ip addr flush dev ${DEVICE}
				evaluate_retval
			fi
			run_subdir ${rc_base}/init.d/networking/red.down/

		elif [ "$TYPE" == "PPPOE" ]; then
			boot_mesg "Bringing down the PPP interface ..."
			## Disable vnstat collection
			/usr/bin/vnstat -u -i ppp0 -r --disable > /dev/null 2>&1
			rm -f /var/ipfire/red/keepconnected
			killall -w -s TERM /usr/sbin/pppd 2>/dev/null
			evaluate_retval
			# Add a NaN value to ppp0 rrd to supress spikes at reconnect
			rrdtool update $RRDLOG/collectd/localhost/interface/if_octets-ppp0.rrd \
				$(date +%s):: > /dev/null 2>&1
		fi

		if [ -e $LEASEINFO ]; then
			boot_mesg -n "Stopping dhcpcd on the ${DEVICE} interface..."
			. $LEASEINFO
			if [ "$LEASETIME" = "4294967295" ]; then
				# do nothing, just echo ok
				echo ""
				echo_ok
			else
				if [ -n "$DHCP_STOP" ]; then
					/sbin/dhcpcd ${DEVICE} $DHCP_STOP &> /dev/null
					RET="$?"
					if [ "$RET" -eq 0 ]; then
						echo ""
						echo_ok
					elif [ "$RET" -eq 1 ]; then
						boot_mesg "dhcpcd not running!" ${WARNING}
						echo_warning
					else
						echo ""
						echo_failure
					fi
				else
					echo ""
					killproc dhcpcd
				fi
			fi
		fi

		if [ "$DEVICE" != "${GREEN_DEV}" ] && [ "$DEVICE" != "" ]; then
			link_status=`ip link show $DEVICE.${RED_VDSL_INET_VLAN} 2> /dev/null`
			if [ -n "${link_status}" ]; then
				if echo "${link_status}" | grep -q UP; then
					boot_mesg "Bringing down the ${DEVICE}.${RED_VDSL_INET_VLAN} interface..."
					ip link set ${DEVICE}.${RED_VDSL_INET_VLAN} down
					vconfig del ${DEVICE} ${RED_VDSL_INET_VLAN}
					evaluate_retval
				fi
			else
				link_status=`ip link show $DEVICE 2> /dev/null`
				if [ -n "${link_status}" ]; then
					if echo "${link_status}" | grep -q UP; then
						boot_mesg "Bringing down the ${DEVICE} interface..."
						ip link set ${DEVICE} down
						evaluate_retval
					fi
				fi
			fi
		fi
		killall -w -s KILL /usr/sbin/pppd >/dev/null 2>&1
		killall -w -s KILL pptp >/dev/null 2>&1
		killall -w -s KILL br2684ctl >/dev/null 2>&1

		## Disable vnstat collection
		/usr/bin/vnstat -u -i ${DEVICE} -r --disable > /dev/null 2>&1

		rm -f /var/ipfire/red/{active,device,dial-on-demand,dns1,dns2,local-ipaddress,remote-ipaddress,resolv.conf}
		exit 0;
		;;
esac

# End