Java Archive Verifier

jar-verify.sh

#!/bin/sh

# Usage: jar-verify FILE-OR-DIR-TO-VERIFY
# 
# Histogram: ./jar-verify test.jar | cut -d: -f 2 | uniq -c | sort -rn

which which 2>&1 >/dev/null || { echo "Ensure Which is Installed."; exit 1; }
which file 2>&1 >/dev/null || { echo "Ensure File Type Detector - file is Installed."; exit 1; }
which unzip 2>&1 >/dev/null || { echo "Ensure Unzip is Installed."; exit 1; }
[ -z "$TMPDIR " ] && { TMPDIR=/tmp; echo "Temporary Directory is now: $TMPDIR"; }

function checkClassType() {
	local CO="$1"
        local QUAL="$2"
	local OUTPUT=`file "$CO" 2>/dev/null | cut -d: -f 2-`
	echo "$QUAL: $OUTPUT"
}

function checkDirType() {
	local DO="$1"
	local QUAL="$2"
	[ -d "$DO" ] && {
		ls "$DO" | while read file; do
			checkFile "$DO/$file" "$QUAL/$file"
		done
	}
}

function extractArchiveToDir() {
	local AO="$1"
	local DD="$2"
	unzip -d "$DD" -o -q "$AO"
}

function checkArchiveType() {
	local AO="$1"
	local QUAL="$2"
	local TMP="rand-$RANDOM-`date +%Y-%m-%d`"
	mkdir -p "$TMPDIR/$TMP" && {
		extractArchiveToDir "$AO" "$TMPDIR/$TMP" && checkDirType "$TMPDIR/$TMP" "$QUAL"
		rm -fr "$TMPDIR/$TMP/"
        }
}

function checkFile() {
	local FO=$1
	local QUAL=$2
	case $1 in
		*.class) 
			checkClassType "$FO" "$QUAL"
			;;
		*.war|*.ear|*.jar|*.zip)
			checkArchiveType "$FO" "$QUAL"
			;;
		*)
			checkDirType "$FO" "$QUAL"
			;;
	esac
}

[ -z "$1" ] && { echo "Syntax is: $0 FILE-OR-DIR-TO-VERIFY" ; exit 1 ; }

while [ ! -z "$1" ]; do
	checkFile "$1" "$1"
	shift
done