#!/bin/sh 

# version 3.0 Sep 25 11:21:02 PDT 1998
# rev 3.01 Tue Nov  3 17:38:58 PST 1998
#	zen - changed /usr/ucb/echo -n to nawk stuff.

# This tool suite was written by and is copyrighted by Brad Powell, Matt
# Archibald, and Dan Farmer 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999 with input
# from Casper Dik, and Alec Muffett.
#
# The copyright holder disclaims all responsibility or liability with
# respect to its usage or its effect upon hardware or computer
# systems, and maintains copyright as set out in the "LICENSE"
# document which accompanies distribution.

#-----------------------------------------------------------------
# Titan Revision FCS 3.0
#-----------------------------------------------------------------


CheckMeOut() {
echo "finding out where we are..."

cwd=`pwd`
echo "we are in '$cwd'"
echo ""

#-----------------------------------------------------------------

echo "checking out your system..."

os=`uname -s`
rev=`uname -r`
arch=`uname -m`
cookie="$os-$rev-$arch"

case "$cookie" in
        Linux-*)		arch="linux" 
				;;
        SunOS-4*-sun3*)		arch="sol1sun3" 
				;;
        SunOS-4*-sun4*)		arch="sol1sun4" 
				;;
        SunOS-5*-sun4*)		arch="sol2sun4" 
				;;
        SunOS-5*-i86pc)		arch="sol2x86" 
				;;
        *)			echo "$0: error: unknown architecture"
				exit 1 
				;;
esac

echo "this system runs: $cookie"
echo "we will be using: $arch"
echo ""

}

Install() {
#-----------------------------------------------------------------

echo "checking for dependencies..."

CheckMeOut

#-----------------------------------------------------------------

echo "setting up links..."

if [ ! -d "arch/$arch" ]
then
	echo "$0: error: no directory 'arch/$arch'"
	exit 1
fi

cd $cwd || exit 1

echo "removing old links..."
for i in `ls arch/$arch`
 do
rm -f $i > /dev/null 2>&1 
done

cd $cwd || exit 1

for i in `ls $cwd/arch/$arch` 
 do
	echo "linking $i into path..."
	ln -s $cwd/arch/$arch/$i $i
done

cd $cwd || exit 1

echo "linking done."
echo "cleaning up is_root, sanity_check, Titan..."
rm -f is_root sanity_check Titan configured sample.Server sample.Firewall sample.Desktop

echo "pulling in local Titan script..."
if [ -x $cwd/arch/$arch/bin/Titan.top ]; then
 /bin/cp $cwd/arch/$arch/bin/Titan.top $cwd/Titan
 /bin/cp $cwd/arch/$arch/bin/TitanReport $cwd/TitanReport
 /bin/cp $cwd/arch/$arch/bin/sample.config $cwd/sample.Firewall
 /bin/cp $cwd/arch/$arch/bin/sample.config $cwd/sample.Server
 /bin/cp $cwd/arch/$arch/bin/sample.config $cwd/sample.Desktop

else
 echo "Titan does not seem to be fully installed - Exiting"
 exit 1
fi

echo " "
echo "Run Titan utilites with 'Titan -[v,f,i]' after reading the Docs..."
echo "			OR"
echo "Run Titan using a config file. (Titan -c sample.Server) after reading the Docs  "
echo " "

}

UnInstall() {

echo "checking for dependencies..."
CheckMeOut

cd $cwd || exit 1
#cd $cwd/arch || exit 1

echo "removing old links..."
for i in `ls arch/$arch`
 do
rm -f $i > /dev/null 2>&1
done

cd $cwd || exit 1
 
echo "Unlinking done...."
echo "cleaning up is_root, sanity_check, Titan..."
rm -f is_root sanity_check TitanReport Titan sample.Server sample.Firewall sample.Desktop $cwd/arch/configured $cwd/arch/cgi-bin

echo "done."

}

BackupFiles() {

echo "Titan can backup all of the files it modifies; This is recommended"
nawk 'BEGIN {printf("proceed? y/n: ")}' /dev/null
read YN
case $YN in
 [yY])
  echo "Okay... Checking for backup program..."
  if [ -r ./lib/backtit.sh -a -r ./lib/untit.sh ]; then 
  echo "Found backtit.sh - Backing up system files now... This might take a while.."
  sleep 3
  cd ./bin
  ./lib/backtit.sh
  else
  echo "Could not find the expected file ./lib/backtit.sh..."
  echo "Passing- No backups done prior to initial Titan run..."
  fi
  ;;
 [nN])
  echo "Okay - Installation complete - What to do now..."
  echo "Take a look at sample.config file for suggested runs of Titan"
  echo "Typically run Titan -v to look at what you have, Titan -f to"
  echo "get the default fixes, Titan -v to see what changed.."
  ;;
 *)
  echo "Sorry - Don't know ${YN} - Install Complete - Exiting"
  echo "You can backup the assumed files by running ./lib/backtit.sh"
 ;;
esac

}

RecoverFiles() {

echo "Titan can recover all of the files it modified; this is only recommended if "
echo "Titan broke something"
nawk 'BEGIN {printf("proceed? y/n: ")}' /dev/null
read YN
case $YN in
 [yY])
  echo "Okay... Checking for recover program..."
  if [ -r ./lib/backtit.sh -a -r ./lib/untit.sh ]; then 
  echo "Found untit.sh - Recovering files now... This might take a while.."
  sleep 3
  cd ./bin
  ./lib/untit.sh -r
  else
  echo "Could not find the expected file ./lib/untit.sh..."
  echo "Passing- No recover done prior to uinstall of Titan..."
  fi
  ;;
 [nN])
  echo "Okay - De-Installation complete - What to do now..."
  echo "Typically run Configure -i to re-install Titan"
  ;;
 *)
  echo "Sorry - Don't know ${YN} - De-Installation Complete - Exiting"
  echo "You can backup the assumed files by running ./lib/backtit.sh"
  echo "You can recover the assumed files by running ./lib/untit.sh"
 ;;
esac

}


date > arch/configured

action=$1
case ${action} in
   -[Dd]*)
  RecoverFiles
  UnInstall
  ;;
   -[Ii]*)
  Install
  BackupFiles
  ;;
 *)
  echo "Usage: $0 -[Ii] = Install Configs"
  echo "Usage: $0 -[Dd] = DeInstall Configs"
  exit 1
 ;;
esac

exit 0