#!/bin/sh
# set -x
#
# tftpconfig
# Utility for setting up a TFTP boot server on a Slackware machine.
#
# Copyright (C) 2000 BSDi, Concord, CA, USA
# All rights reserved.
#
# Written by David Cantrell <david@slackware.com>
# Last modified 16-Apr-2002 by Alvaro Figueroa <fede2@fuerzag.ulatina.ac.cr>
# Licensed under the GNU General Public License (GPL), any version
#
# ChangeLog:
# 07-Jly-2002	- Fix bugs and add support for new JavaStation files
# 16-Apr-2002	- Almost a complete rewrite of the script.
#		- New order of userland rarpd related actions.
#		- Removed Slackware/Splack dependence.
#		- I can know be runned outside /tftpboot.
#		- It also checks if /tftpboot exist as a link.
#		- It ask for the name of the tftpimage insted of using
#		  Splacks's
#		- It only checks if depmod and modprobe exist if it needs
#		  them
#		- It checks for programs having execute permitions instead
#		  of read permition.
#
# 28-Nov-2001   - More clean up to the awk script.
#
# 27-Nov-2001   - Removed function hex, and replaced by a small awk script.
#
# 24-Jul-2001   - Removed any need to use addr, and replaced by and awk
#		  script, inside function hex. It need to be cleaned up.
#
# 20-Jul-2001   - Broke apart detections for Slackware Linux.
#               - Detect kernel version before looking for rarp module.
#                 (Kernel 2.4.x no longer has rarpd in the kernel.)
#               - Gave choice to continue without 'addr' or kernel 'rarpd'.
#                 (Appears '/usr/bin/addr' is not in Slackware 8.)
#               - Fixed missing 'fi' bug that caused EOF unexpectedly.
#               - Splack Linux development started here.
#
# 25-May-2001   Added support for the 2.4 boot image for UltraSPARCs.
#
# 12-May-2001   Fixed the names of the image files it checks for when run.
#
# 09-Mar-2001   Removed console type question, as it is no longer necessary.
#
# 08-Mar-2001   Edited to work with the new TFTP boot image names.
#
# 12-Dec-2000   - Checks for correct tftp boot images existing before running.
#               - Asks for machine type (either 32-bit or 64-bit).
#               - Asks for console type (either color or serial).
#               - Copies appropriate tftp image into place.
#               - Sets symbolic links necessary for 32-bit SPARC systems.
#
# 05-Dec-2000   Initial version.
#
echo "Utility for setting up a TFTP boot server on a Slackware machine."
echo "Licensed under the GNU General Public License (GPL), any version."
echo "Original by David Cantrell. Maintained by Splack Linux - splack.org"

# Check for required software.
for f in /usr/sbin/inetd /usr/sbin/in.tftpd /sbin/arp 
do
   if [ ! -x $f ]
   then
      echo "System is missing $f, exiting."
      exit
   fi
done

USERLAND_RARPD=0

# Is the tftp server enabled?
a="`cat /etc/inetd.conf | grep tftp | cut -c 1`"
if [ "`cat /etc/inetd.conf | grep tftp | cut -c 1`" = "#" ]
then
   echo "You need to enable your TFTP server by uncommenting this line in your"
   echo "/etc/inetd.conf file:"
   echo
   cat /etc/inetd.conf | grep tftp
   echo
   echo "Remove the hash mark, save, and rerun this script."
   exit
fi

# Check kernel version.
if [ "`uname -r | cut -b1-3`" != "2.4" ]
then
	# Kernel is not 2.4.x.
	# do we have RARP support in the kernel?
	if [ ! -r /proc/net/rarp ]
	then
		for f in /sbin/depmod /sbin/modprobe
		do
		   if [ ! -x $f ]
   		   then
		      echo "System is missing $f, exiting."
		      exit
 		   fi
		done
		/sbin/depmod -a
		/sbin/modprobe rarp

   		if [ ! -r /proc/net/rarp ]
   		then
      			echo "The running kernel lacks RARP support and the RARP module appears to be"
      			echo "missing.  You need a kernel with RARP support for TFTP booting."
      		exit
   	fi
fi
else
	echo "Running Kernel is greater than 2.2.x"
	if [ ! -x /sbin/rarpd ]
	then 
	  echo "You'll need a userland rarpd. Splack has packages for it"
	  exit -1
#fi
	else
	  echo "Using userland rarpd."
	  USERLAND_RARPD=1
	fi
fi

# Create the tftpboot directory if we need to.
if [ ! -d /tftpboot -o ! -L /tftpboot ]
then
   mkdir -p /tftpboot
fi

draw_line()
{
   echo
   echo
   echo "--------------------------------------------------------------------------------"
   echo
}


# initial welcome screen, user can hit Ctrl+C here
cat << EOF


   tftpconfig - Splack's TFTP Boot Server Utility

   This script will help you get your machine up and running as a
   boot server for your SPARC-based computer.  Tftpconfig needs to know a few
   things before it can proceed:

      - The MAC address of the machine that will be network booting.
      - The IP address you want to assign that machine.
      - The boot image you want this machine to serve it.

   Once you have gathered the MAC address and have chosen an IP address, press
   enter.
EOF
read JUNK

draw_line

# get the MAC address
cat << EOF

   MAC Address of Client Machine

   Enter the MAC address of the client machine.  This will be something 
   similar to 08:00:20:B7:10:55, but may be written without leading zeros.
   The MAC address is always displayed when the system powers on.  It is
   usually the second thing displayed, right after "Keyboard present."

   Enter the MAC address in the format above.  Add leading zeros if you need
   to.  Do use colons to seperate each value in the MAC address.  If you mess
   up, hit Ctrl+C and start the script over again.

EOF
echo -n "   MAC address > "
read MACADDR

draw_line

# get the IP address for the client machine
cat << EOF

   IP Address of Client Machine

   Enter the IP address that you want to assign the client machine when it
   boots up.  Depending on your local network setup, this could be anything.
   An example of a valid IP address is 192.168.1.14

   Be sure to consult with the network administrator to make sure the IP
   address you will be using is available.  IP address conflicts can cause
   headaches for everyone.

EOF
echo -n "   IP address > "
read IPADDR

draw_line

# results
cat << EOF

   Settings

   You have supplied the following information:

      MAC address    $MACADDR
      IP address     $IPADDR

   If these settings are correct, press enter.  Otherwise, press Ctrl+C and
   start the script over again.

EOF
read JUNK


# Populate the rarp table.
/sbin/arp -s $IPADDR $MACADDR

# If using a userland rarpd entries might go to /etc/ethers.
if [ "$USERLAND_RARPD" == "1" ]
then
	echo "$MACADDR $IPADDR" >> /etc/ethers 
#fi
else
	/sbin/rarp -s $IPADDR $MACADDR
fi

TFTPNAME=`awk -v IP=$IPADDR 'BEGIN{split(IP,a,".");printf("%02X%02X%02X%02X\n",a[1],a[2],a[3],a[4])}'`

cat << EOF

   Client Machine Type

   You need to specify the type of system the client is.  If it a sun4c,
   sun4d, or sun4m system, then it is a 32-bit machine.  Any machine that
   has "Ultra" in its name is a 64-bit machine.

   Examples of 32-bit machines:  SPARCstation 1/1+/2, SPARCstation IPC/IPX,
                                 SPARCstation 5/10/20, SPARCcenter 1000/2000,
                                 SPARCstation Classic

   Examples of 64-bit machines:  Ultra 1/2/5/10/30/60/80, Enterprise servers.

   Examples of JavaStations:     Sun JavaStation 1.

   Select machine type:

      [1]  My client machine is 32-bit.
      [2]  My client machine is 64-bit.
      [3]  My client machine is a JavaStation.

EOF

LUPE=1
MACHINETYPE=0

while [ "$LUPE" = "1" ]
do
   echo -n "   Machine type [1,2,3] > "
   read MACHINETYPE

   if [ "$MACHINETYPE" = "1" -o "$MACHINETYPE" = "2" -o "$MACHINETYPE" = "3" ];
   then
      LUPE=0
   else
      echo
      echo "   ERROR:  You must enter a 1, 2, or 3 for the machine type."
      echo
   fi
done

draw_line

# if we're booting an UltraSPARC, ask what kernel to use
if [ "$MACHINETYPE" = "2" ]
then
   cat << EOF

   UltraSPARC Kernel Version

   You need to select the kernel version you'd like to use since you
   are booting an UltraSPARC system.

   Select kernel version:

      [1]  Linux 2.2.19
      [2]  Linux 2.4.4

EOF
LUPE=1
while [ "$LUPE" = "1" ]
do
   echo -n "   Kernel version [1,2] > "
   read KERNELVER

   if [ "$KERNELVER" = "1" -o "$KERNELVER" = "2" ]
   then
      LUPE=0
   else
      echo
      echo "   ERROR:  You must enter a 1 or 2 for the kernel version."
      echo
   fi
done
fi

draw_line

# results
cat << EOF

   Settings

   You have supplied the following information:

      MAC address    $MACADDR
      IP address     $IPADDR
EOF
echo -n "      Machine type   "
if [ "$MACHINETYPE" = "1" ]
then
   echo -n "32-bit"
elif [ "$MACHINETYPE" = "2" ]
then
   echo -n "64-bit "
   if [ "$KERNELVER" = "1" ]
   then
      echo -n "(Linux 2.2.19)"
   elif [ "$KERNELVER" = "2" ]
   then
      echo -n "(Linux 2.4.4)"
   fi
else
   echo -n "JavaStation"
fi
echo

cat << EOF

   If these settings are correct, press enter.  Otherwise, press Ctrl+C and
   start the script over again.

EOF
read JUNK

if [ "$MACHINETYPE" = "1" ]
then
   IMGNAME=tftp-sun4cdm.img
elif [ "$MACHINETYPE" = "2" ]
then
   if [ "$KERNELVER" = "1" ]
   then
      IMGNAME=tftp-sun4u.img
   elif [ "$KERNELVER" = "2" ]
   then
      IMGNAME=tftp-sun4u-2.4.4.img
   fi
elif [ "$MACHINETYPE" = "3" ]
then
   IMGNAME=tftp-javastation.boot
fi

if [ ! -r $IMGNAME ]
then
  echo "This image does not exist, or does not have the right perms"
  exit
fi

cp $IMGNAME /tftpboot/$TFTPNAME
if [ "$MACHINETYPE" = "3" ]
 then
 echo "Unpacking root image - please wait"
 mkdir /tftpboot/$IPADDR
 IMGDIR=`pwd`
 ( cd /tftpboot/$IPADDR; tar xzf $IMGDIR/tftp-javastation.root.tgz )
fi

#Is is necesary to create the $TFTPNAME.(SUN4C|SUN4D|SUN4M) link?
# Yes but only for older Sun4c machines

# if [ "$MACHINETYPE" = "1" -o "$MACHINETYPE" = "3" ]
if [ "$MACHINETYPE" = "1" ]
then
   ( cd /tftpboot
     ln -sf $TFTPNAME $TFTPNAME.SUN4C
     ln -sf $TFTPNAME $TFTPNAME.SUN4D
     ln -sf $TFTPNAME $TFTPNAME.SUN4M )
fi

# restart inetd
killall -HUP inetd

if [ $USERLAND_RARPD = '1' ]
then
        /usr/sbin/rarpd #Start the userland rarp server
fi


# done!
echo

echo "Your system is now set up to act as a boot server for $MACADDR."
echo "You may now go to your SPARC system and type 'boot net' at the ok prompt."