#!/bin/sh
#
# Recipes for making badlen-* family of archives.
# 
# Every one is based on a version of foo, with binary editing using
# bvi (or similar) and cut-n-paste with dd.

tmp=/var/tmp/$$
trap "rm -f $tmp.*; exit 0" 0 1 2 3 15

# Set up for a new badlen-X archive
#
X=0
while true
do
    [ ! -f badlen-$X.index ] && break
    X=`expr $X + 1`
    if [ $X -eq 100 ]
    then
	echo "Botch: all archives badlen-0...badlen-99 already exist?"
	exit 1
    fi
done
if [ $X -eq 0 ]
then
    cp foo.0 badlen-0.0
    cp foo.meta badlen-0.meta
    cp foo.index badlen-0.index
    X=1
fi

ln badlen-0.meta badlen-$X.meta
ln badlen-0.index badlen-$X.index

case $X
in
    1)	# Trailer len of first pmResult smaller than header len.
	cp foo.0 badlen-$X.0
	echo '263s\\.\\80\\' >$tmp.ex
	;;

    2)	# Data file truncated just before first trailer record ... 132
	# bytes for label and 128 (4 bytes short) for first data record.
	dd if=badlen-0.0 of=badlen-$X.0 bs=1 count=260
	;;

    3)	# Data file truncated mid way thru first pmResult ... 132 bytes for
	# label and 120 (12 bytes short) for first partial data record.
	dd if=badlen-0.0 of=badlen-$X.0 bs=1 count=252
	;;

    4)	# Empty data file
	echo >badlen-$X.0
	;;

    5)	# Short label record (42 bytes, not 132)
	dd if=badlen-0.0 of=badlen-$X.0 bs=1 count=42
	;;

    6)	# Label header len 64 not 132 as expected
	cp foo.0 badlen-$X.0
	echo '3s\\.\\40\\' >$tmp.ex
	;;

    7)	# Label trailer len 64 not 132 as expected
	cp foo.0 badlen-$X.0
	echo '131s\\.\\40\\' >$tmp.ex
	;;

    8)	# Label bad PM_LOG_VER
	cp foo.0 badlen-$X.0
	echo '7s\\.\\FF\\' >$tmp.ex
	;;

    9)  # Truncated metadata file
	cp foo.0 badlen-$X.0
	cp foo.index badlen-$X.index
	rm -f badlen-$X.meta
	dd if=foo.meta of=badlen-$X.meta bs=1 count=840
	;;

    10)	# Data file truncated in trailer of label record
	dd if=badlen-0.0 of=badlen-$X.0 bs=1 count=131
	;;

    11)	# Data file truncated in header of first pmResult
	dd if=badlen-0.0 of=badlen-$X.0 bs=1 count=133
	;;

esac

if [ -f $tmp.ex ]
then
    echo 'w' >>$tmp.ex
    echo 'q' >>$tmp.ex

    if which bvi >/dev/null 2>&1
    then
	bvi -f $tmp.ex badlen-$X.0
    else
	echo "bvi not installed"
	echo "Need to apply the equivalent of this binary editing to badlen-$X.0"
	cat $tmp.ex
    fi
fi

echo "badlen-$X created."

exit