#!/bin/sh

#

# $Id: AFSConfig,v 1.2 99/05/09 14:49:54 abe Exp $

#

# AFSConfig: configure for AFS

AFSD=/usr/vice/etc/afsd

AH=AFSHeaders

AV=AFSVersion

STD=/usr/afsws/include

# Establish trap and stty handling.

ISIG=":"

trap 'rm -f $AH $AV; $ISIG; exit 1'  1 2 3 15

stty -a 2>&1 | grep isig > /dev/null

if test $? -eq 0

then

  stty -a 2>&1 | egrep -e -isig > /dev/null

  if test $? -eq 0

  then

    ISIG="stty -isig"

    stty isig

  fi

fi

# Decide how to use echo.

ECHO=`echo -n ""`

if test "X$ECHO" = "X-n "

then

  EC="\c"

  EO=""

else

  EC=""

  EO="-n"

fi

# Decide (perhaps for a second time) that AFS is installed.

CELL=""

if test -r /usr/vice/etc/ThisCell

then

  cell=`awk '{print $1}' /usr/vice/etc/ThisCell`

  if test -d /afs/$cell

  then

    CELL=$cell

  else

    CELL=`echo $cell | sed 's/\([^.]*\)\..*/\1/'`

    if test "X$CELL" != "X"

    then

      if test ! -d /afs/$CELL

      then

        CELL=""

      fi

    fi

  fi

fi

if test "X$CELL" = "X"

then

  echo ""

  echo "This system does not appear to have AFS installed."

  exit 1

fi

# See if AFS configuration is wanted.

cat << .CAT_MARK

AFS appears to be installed on this system; cell name "$CELL".

Lsof needs to be configured for AFS by identifying: 1) the directory

that includes the AFS header files needed to compile AFS support into

lsof; and 2) the version of AFS that is installed.

.CAT_MARK

END=0

while test $END = 0

do

  echo ""

  echo $EO "Do you want to configure lsof for AFS (y|n) [y]? $EC"

  read ANS EXCESS

  if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

  then

    exit 1

  fi

  if test "X$ANS" = "Xy" -o "X$ANS" = "XY" -o "X$ANS" = "X"

  then

    END=1

  else

    echo ""

    echo "Please answer y or n."

  fi

done

# See if $AH exists and points to a likely place.

AHOK=""

echo ""

echo "====================================================================="

echo ""

if test -r $AH

then

  AHP=`cat $AH`

  if test -r $AHP

  then

    if test -r $AHP/afs/afs.h

    then

      cat << .CAT_MARK

The location of the AFS header files required by lsof has been

previously identified as "$AHP".

Since <afs/afs.h> can be found there, that's probably correct.

.CAT_MARK

      END=0

      while test $END = 0

      do

	echo ""

	echo $EO "Do you want to use $AHP again (y|n) [y]? $EC"

	read ANS EXCESS

	if test "X$ANS" = "Xy" -o "X$ANS" = "XY" -o "X$ANS" = "X"

	then

	  AHOK="ok"

	  END=1

	else

	  if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

	  then

	    rm -f $AH

	    AHP=""

	    END=1

	  else

	    echo ""

	    echo "Please answer y or n."

	  fi

	fi

      done

    else

      echo "\"$AHP\" has been previously specified as the location of the"

      echo "AFS header files, but it lacks an afs/afs.h header file."

      rm -f $AH

      AHP=""

    fi

  else

    echo "The file ./$AH exists, but has no AFS header file path in it."

    rm -f $AH

    AHP=""

  fi

else

  echo "No previous header location has been specified."

  rm -f $AH

  AHP=""

fi

# See if the header files are in the "standard" place.

if test "X$AHOK" != "Xok"

then

  if test -r $STD

  then

    echo ""

    echo "====================================================================="

    echo ""

    echo "The AFS header files appear to be in the \"standard\" location --"

    echo "i.e.: \"$STD\"."

    END=0

    while test $END = 0

    do

      echo ""

      echo $EO "Do you want to let lsof use them (y|n) [y]? $EC"

      read ANS EXCESS

      if test "X$ANS" = "Xy" -o "X$ANS" = "XY" -o "X$ANS" = "X"

      then

	echo $STD > $AH

	AHOK="ok"

	END=1

      else

	if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

	then

	  END=1

	else

	  echo ""

	  echo "Please answer y or n."

	fi

      fi

    done

  fi

fi

# Ask for the AFS header file location.

if test "X$AHOK" != "Xok"

then

  echo ""

  echo "====================================================================="

  echo ""

  echo "Please specify the full path where lsof can find the AFS header"

  echo "files.  A possible location is: \"/afs/$CELL/<sysname>/include\"."

  cat << .CAT_MARK

The <sysname> component of the path is the AFS system name that

was used to configure and build AFS on this system.  It is usually

constructed from a manufacturer or Unix operating system designation,

followed by a version number -- e.g., hp800_ux90, sun4m_54, vax_ul43,

etc.  You may have to consult your AFS documentation to determine

what <sysname> applies to your configuration.

.CAT_MARK

  END=0

  while test $END = 0

  do

    echo ""

    echo $EO "Do you want to see the contents of /afs/$CELL (y|n) [y]? $EC"

    read ANS EXCESS

    if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

    then

      END=1

    else

      if test "X$ANS" = "Xy" -o "X$ANS" = "XY" -o "X$ANS" = "X"

      then

	echo ""

	ls -C /afs/$CELL

	END=1

      else

	echo ""

	echo "Please answer y or n."

      fi

    fi

  done

  END=0

  while test $END = 0

  do

    echo ""

    echo $EO "AFS header file path: $EC"

    read ANS EXCESS

    fc=`expr "${ANS}X" : '\(.\).*'`

    if test "X$fc" = "X/"

    then

      if test -r $ANS/afs/afs.h

      then

	echo $ANS > $AH

	AHOK="ok"

	END=1

      else

	echo ""

	echo "$ANS/afs/afs.h doesn't exist."

	echo "Please enter a path whose afs subdirectory contains afs.h"

      fi

    else

      echo ""

      echo "Please enter an absolute path name."

    fi

  done

fi

if test "X$AHOK" != "Xok"

then

  echo "AFSConfig: unknown error"

  exit 1

fi

# Determine AFS version.

if test -r $AV

then

  echo ""

  echo "====================================================================="

  echo ""

  AVN=`cat $AV`

  cat << .CAT_MARK

The AFS version was previously specified as: $AVN

.CAT_MARK

  END=0

  while test $END = 0

  do

    echo ""

    echo $EO "Is this the correct version number (y|n) [y]? $EC"

    read ANS EXCESS

    if test "X$ANS" = "Xy" -o "X$ANS" = "XY" -o "X$ANS" = "X"

    then

      exit 0

    fi

    if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

    then

      rm -f $AV

      END=1

    else

      echo "Please answer y or n."

    fi

  done

fi

# See if the version number can be determined.

if test -r $AFSD

then

  ANS=`strings $AFSD | grep "Base configuration afs" | sed 's/^.*ion afs\([^ ]*\) .*/\1/'`

  TV=`echo $ANS | sed 's/^\([0-9]*\)\.\([0-9]*\)\(.*\)/\1 \2 \3/' | awk '{printf "%d.%d%s\n",$1,$2,$3}'`

  if test "X$ANS" = "X$TV"

  then

    echo ""

    echo "====================================================================="

    echo ""

    cat << .CAT_MARK

Examining $AFSD the AFS version number appears to be: $TV

.CAT_MARK

    END=0

    while test $END = 0

    do

      echo ""

      echo $EO "Do you want to use this version number (y/n) [y]? $EC"

      read ANS EXCESS

      if test "X$ANS" = "Xn" -o "X$ANS" = "XN"

      then

	END=1

      else

	if test "X$ANS" = "Xy" -o "X$ANS" = "XY" -o "X$ANS" = "X"

	then

	  echo $TV > $AV

	  exit 0

	else

	  echo ""

	  echo "Please answer y or n."

	fi

      fi

    done

  fi

fi

# Ask for the version number.

echo ""

echo "====================================================================="

END=0

while test $END = 0

do

  echo ""

  echo $EO "Please enter the AFS version number: $EC"

  read ANS EXCESS

  TV=`echo $ANS | sed 's/^\([0-9]*\)\.\([0-9]*\)\(.*\)/\1 \2 \3/' | awk '{printf "%d.%d%s\n",$1,$2,$3}'`

  if test "X$ANS" = "X$TV"

  then

    echo $TV > $AV

    exit 0

  fi

done