Add primary script

multihome

+#!/bin/bash
+
+# This script is called with the following arguments:
+#    Arg  Name                          Example
+#    $1   Interface name                ppp0
+#    $2   The tty                       ttyS1
+#    $3   The link speed                38400
+#    $4   Local IP number               12.34.56.78
+#    $5   Peer  IP number               12.34.56.99
+#    $6   Optional ``ipparam'' value    foo
+
+# The  environment is cleared before executing this script
+# so the path must be reset
+PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin
+export PATH
+
+# These variables are for the use of the scripts run by run-parts
+PPP_IFACE="$1"
+PPP_TTY="$2"
+PPP_SPEED="$3"
+PPP_LOCAL="$4"
+PPP_REMOTE="$5"
+PPP_IPPARAM="$6"
+
+IP=/sbin/ip
+IPT=/sbin/iptables
+CNT=/usr/sbin/conntrack
+
+EOLO=ppp0
+ALICE1=ppp1
+ALICEv6=ppp2
+ALICE2=ppp3
+
+DEFROUTES="$EOLO $ALICE1"
+
+OVPN_CONFIG_DIR="/etc/openvpn"
+
+#CFILE=$(readlink -f $0)
+CDIR=$(dirname $0)
+
+
+ACTIVEDEVS=$(/sbin/ifconfig | grep ppp | grep -v $ALICEv6 | awk '{print $1}')
+
+UP=/etc/ppp/ip-up.d
+DOWN=/etc/ppp/ip-down.d
+
+echo $ACTIVEDEVS > /tmp/active.devices
+echo ${CDIR} > /tmp/mhome.cdir
+case ${PPP_IFACE} in
+   $EOLO)
+      TABLE="eolo"
+      MARK=1
+      ;;
+   $ALICE1)
+      TABLE="alice"
+      MARK=2
+      ;;
+   $ALICE2)
+      TABLE="alice2"
+      MARK=3
+      ;;
+   $ALICEv6)
+      TABLE="alicev6"
+      MARK="NO"
+      ;;
+   *)
+      TABLE="eolo"
+      MARK=1
+esac
+
+if [ $MARK != "NO" ] ; then
+case ${CDIR} in 
+   $UP)
+      $IP route add default dev $PPP_IFACE table $TABLE
+      $IP rule add from $PPP_LOCAL table $TABLE
+      $IP rule add fwmark $MARK table $TABLE
+
+      $IPT -t nat -I POSTROUTING -s 192.168.0.0/16 -o $PPP_IFACE -j MASQUERADE
+
+      $IPT -t mangle -I POSTROUTING -o $PPP_IFACE -j MARK --set-mark $MARK
+
+      echo 0 > /proc/sys/net/ipv4/conf/$PPP_IFACE/rp_filter # DISABLE MARTIANS FILTERING
+      echo 1 > /proc/sys/net/ipv4/ip_forward  # ENABLE IP FORWARD
+      echo 10 > /proc/sys/net/ipv4/route/gc_timeout # FAST ROUTING TABLE CACHE TIMEOUT
+
+      logger -t "[PPP $PPP_IFACE - $TABLE]" "Connection up (ip $PPP_LOCAL, activedevices $ACTIVEDEVS)"
+
+
+      for VPN_CONFIG in `cd $OVPN_CONFIG_DIR; ls *.$TABLE.conf 2> /dev/null`; do
+        VPN_NAME=${VPN_CONFIG%%.conf}
+        cat $OVPN_CONFIG_DIR/$VPN_CONFIG | grep -v "^local" > $OVPN_CONFIG_DIR/$VPN_CONFIG.tmp
+        echo "local $PPP_LOCAL" >> $OVPN_CONFIG_DIR/$VPN_CONFIG.tmp
+        mv $OVPN_CONFIG_DIR/$VPN_CONFIG.tmp $OVPN_CONFIG_DIR/$VPN_CONFIG
+        /etc/init.d/openvpn stop $VPN_NAME >/dev/null 2>&1
+        /etc/init.d/openvpn start $VPN_NAME >/dev/null 2>&1
+        logger -t "[PPP $TABLE - OpenVPN]" "$VPN_NAME enabled on $PPP_LOCAL" 
+      done
+
+
+     
+
+      ;;
+   $DOWN)
+      $IPT -t nat -D POSTROUTING -s 192.168.0.0/16 -o $PPP_IFACE -j MASQUERADE
+
+      $IPT -t mangle -D POSTROUTING -o $PPP_IFACE -j MARK --set-mark $MARK
+
+      $IP rule del fwmark $MARK table $TABLE
+      $IP rule del from $PPP_LOCAL table $TABLE
+
+      # Remove already established connection from the conntrack table
+      $CNT -D -m $MARK
+
+      logger -t "[PPP $PPP_IFACE - $TABLE]" "Connection down (ex ip $PPP_LOCAL, activedevices $ACTIVEDEVS)"
+
+
+     for VPN_CONFIG in `cd $OVPN_CONFIG_DIR; ls *.$TABLE.conf 2> /dev/null`; do
+        VPN_NAME=${VPN_CONFIG%%.conf}
+        /etc/init.d/openvpn stop $VPN_NAME >/dev/null 2>&1
+        logger -t "[PPP $TABLE- OpenVPN]" "$VPN_NAME disabled"
+      done
+
+      ;;
+esac
+
+$IP route del default 2>&1 > /dev/null
+if [ x"$ACTIVEDEVS" != x"" ] ; then 
+   DEFR=""
+   for iface in $ACTIVEDEVS
+      do
+      logger -t "[PPP $iface- nexhop]" "$DEFR nexthop dev $iface weight 1"
+      DEFR="$DEFR nexthop dev $iface weight 1"
+   done
+   $IP route  add default scope global $DEFR
+   #$IP route  add default equalize $DEFR
+fi
+$IP route flush cache
+else
+case ${CDIR} in
+   $UP)
+      $IP route add default dev $PPP_IFACE table $TABLE
+      $IP rule add from $PPP_LOCAL table $TABLE
+
+      ;;
+   $DOWN)
+
+      $IP rule del from $PPP_LOCAL table $TABLE
+      ;;
+esac
+$IP route flush cache
+fi