#! /bin/bash
#
# This file is part of the LibreOffice project.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#

#check that zzuf is installed
hash zzuf &> /dev/null
if [ $? -eq 1 ];then
    echo >&2 "zzuf not found. Please install and/or fix the PATH environment variable. Aborting"
    exit -1
fi

#check that file(s) to fuzz are mentioned
if [[ $# -eq 0 ]]; then
    echo "Usage: fuzzfiles.sh <list of seed files to fuzz>"
    echo "The generated fuzzed files will be output to the current working directory"
    echo "The fuzzed files will be named XYZ-ratio-NNNN where:"
    echo -e "\tXYZ: the original file name"
    echo -e "\tratio: the fuzz ratio (what % of bytes were fuzzed)"
    echo -e "\tNNNN: the mutation # for that file and ratio combo"
    exit -1
fi

for file in $@; do
    if [ -d $file ]; then
        echo "$file is a directory. Only files are allowed"
    elif [ -e $file ]; then
        basename=${file##*/}
        #Sequence from 0.001 to 0.5
        for ratio in `seq -w 1 2 500 | sed -e 's/^/0./'`; do
            echo "Fuzzing $file with ratio $ratio"
            for i in {1..1000}; do
                zzuf -r $ratio < $file > "$basename-$ratio-$i"
                done #end of for i in {1..
            done #end of for ratio in ...
    fi #end if of file vailidity check
done #end for file in $@