#!/bin/bash 
  
 #### VARIABILI 
 SCRIPTNAME=`echo $0 | awk -vFS='/' '{print $NF}'` 
 #EXEC=/hosthome${PWD#$HOME}${0#'.'} 
  

waitfinish() 
{ 
    SEMAPHORE=$1.booting 
    touch $SEMAPHORE 
    while [ -f $SEMAPHORE ]; do 
       sleep 2 
    done 
    sleep 5 
} 
 
 notifyfinish() 
{ 
   rm $1.booting 
} 

startvm() 
{ 
X="--new --exec=/hosthome${PWD#$HOME}/${SCRIPTNAME}" 

 	  if       [ -e r_pc1-pc1.disk ] || 
       [ -e r_pc2-pc2.disk ] || 
       [ -e r_1-r1.disk ] || 
       [ -e r_2-r2.disk ]   ; then    
 	    echo "$0: some .disk file exists in this directory!" 
 	    echo " launch "$0 crash" first" 
 	    exit 1 
 	  fi 
  
 	  vstart  r_pc1-pc1 --eth0=A $X 
 	  waitfinish r_pc1-pc1 
 	  vstart  r_pc2-pc2 --eth0=C $X 
 	  waitfinish r_pc2-pc2 
 	  vstart  r_1-r1 --eth0=A --eth1=B $X 
 	  waitfinish r_1-r1 
 	  vstart  r_2-r2 --eth1=B --eth0=C $X 
 	  waitfinish r_2-r2 
echo '' 
echo ' *** all machines started ***'
} 

crashvm() 
 { 
 	  vcrash  r_pc1-pc1
 	  vcrash  r_pc2-pc2
 	  vcrash  r_1-r1
 	  vcrash  r_2-r2
 } 
 
make_ripd_file() 
{ 
cat > /etc/zebra/ripd.conf <<  EOF 
! 
 hostname ripd 
 password root 
 enable password root 
! 
log file /var(log/zebra/ripd.log 
!ricorda che questa è una prova...
EOF
}
  
make_zebra_file() 
 { 
  	  cat > /etc/zebra/zebra.conf <<EOF
 ! -*- zebra -*-  
 ! 
 ! zebra configuration file 
 ! 
 hostname zebrad 
 password root 
 enable password root 
 ! 
 ! Static default route sample. 
 ! 
 ! ip route 0.0.0.0/0 203.181.89.241 
 ! 
 log file /var/log/zebra/zebra.log 
EOF
}
 
  help_exit() 
 { 
 	    echo "Usage:$0 {start|crash}" 
 	    echo " Run this script from your home or from a subdir" 
 	    echo "  lab start " 
 	    echo "starts all virtual machines for the lab " 
    echo "     press enter after each virtual machines has booted " 
 	   echo "  lab crash " 
	   echo "     makes all virtual machines to crash and delete .disk files " 
 	    exit 1 
 	  } 
  
 if [ "$1" = "start" ]; then 
 startvm 
 elif [ "$1" = "crash" ]; then 
 crashvm 
 rm -f *.disk  *.booting 
 elif [ ! -z $1 ]; then 
 help_exit 
 elif [ -z $1 ]; then 
 
	if [ `id -u` != "0" ]; then 
 help_exit 
 fi 
 
   SCRIPTFILE=`cat /proc/cmdline | awk -v FS== -v RS=' ' '{if($1=="exec") print $2}' ` 
   SCRIPTDIR=${SCRIPTFILE%/${SCRIPTNAME}} 
   echo changing directory to $SCRIPTDIR 
   cd $SCRIPTDIR  
 
case "$HOSTNAME" in 
 
r_pc1-pc1) 
 /sbin/ifconfig eth0 195.11.14.5 netmask 255.255.255.0 up 
 /sbin/route add default gw 195.11.14.1
 
## NORIP 
## NOBGP 
notifyfinish r_pc1-pc1
  ;; 
 
 
r_pc2-pc2) 
 /sbin/ifconfig eth0 200.1.1.7 netmask 255.255.255.0 up 
 /sbin/route add default gw 200.1.1.1
 
## NORIP 
## NOBGP 
notifyfinish r_pc2-pc2
  ;; 
 
 
r_1-r1) 
 /sbin/ifconfig eth0 195.11.14.1 netmask 255.255.255.0 up 
 /sbin/ifconfig eth1 100.0.0.9 netmask 255.255.255.252 up 
 /sbin/route add -net 200.1.1.0/24 gw 100.0.0.10
 
## NORIP 
## NOBGP 
notifyfinish r_1-r1
  ;; 
 
 
r_2-r2) 
 /sbin/ifconfig eth0 200.1.1.1 netmask 255.255.255.0 up 
 /sbin/ifconfig eth1 100.0.0.10 netmask 255.255.255.252 up 
 /sbin/route add -net 195.11.14.0/24 gw 100.0.0.9
 
## NORIP 
## NOBGP 
notifyfinish r_2-r2
  ;; 
 
 
*) 
echo "error:don\'t know how to configure $HOSTNAME " 
exit 1 
esac 
fi