#!/bin/bash
#
# Script checking the right permissions for software installations:
# Ordinary files must at least have permissions 664 and directories 755.
# 
# Christoph Niethammer <niethammer@hlrs.de> (C) 2010-2011
#

declare -r APP_NAME="${0##*/}"
declare -r  VERSION="0.8"
declare SEARCH_DIRS=
declare     VERBOSE=0
declare PRINT_FILES=0
declare  PRINT_DIRS=0
declare -r FILE_PERMS="! -perm -664"
declare -r  DIR_PERMS="! -perm 775"


function print_usage {

binary=`basename $0`
cat <<EOF
${APP_NAME}: (${VERSION})

Copyright (C) 2010-2011 Christoph Niethammer <niethammer@hlrs.de>

Usage: $APP_NAME DIR

  -h, --help       Print this usage
  -v, --verbose    Be more verbose (print list of found directories and files)

Checks permissions in the given directories. Permissions for files must be 
at least set to 664 and for directories must be exactly 775.

EOF
}

function die {
	echo $1
	exit 1
}

if [ $# -lt 1 ]; then
	print_usage
    exit 0
fi

for arg in $@; do 
	case $arg in
        --help|-h)
            print_usage
            exit 0
            ;;
	    --verbose|-v)
            VERBOSE=1
		    PRINT_FILES=1
		    PRINT_DIRS=1
            ;;
        *)
	        if [[ ! -d $arg ]]; then
		        echo "# Skipped	$arg"
		    continue
	        fi
	        SEARCH_DIRS+="${IFS}${arg}"
	        #echo "# Added	$arg"
            ;;
    esac
done

echo "# Searching for directories which do not match '$DIR_PERMS' ..." 
WRONG_DIRS=(`find $SEARCH_DIRS -type d $DIR_PERMS -print`)
echo "# Searching for files which do not match '$FILE_PERMS' ..." 
WRONG_FILES=(`find $SEARCH_DIRS -type f $FILE_PERMS -print`)


if [[ $PRINT_FILES -eq 1 ]]; then
echo "# ** directories with wrong permissions:"
for dir in ${WRONG_DIRS[@]}; do
    echo $dir
done

echo "# ** files with wrong permissions:"
for file in ${WRONG_FILES[@]}; do
    echo $file
done
fi

echo "#"
echo "# ------------------------------"
echo "# Summary:"
echo "#   directories with wrong permissions:  ${#WRONG_DIRS[@]}"
echo "#   files with wrong permissions:        ${#WRONG_FILES[@]}"
echo "# ------------------------------"
echo "#"

# clean up temporary files
#rm $WRONG_DIR_FILE
#rm $WRONG_FILES_FILE