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#!/bin/bash -eu
# Copyright 2016 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
################################################################################
# Fuzzer runner. Appends .options arguments and seed corpus to users args.
# Usage: $0 <fuzzer_name> <fuzzer_args>
export PATH=$OUT:$PATH
cd $OUT
FUZZER=$1
shift
rm -rf /tmp/input/ && mkdir /tmp/input/
CORPUS=
SEED_CORPUS="${FUZZER}_seed_corpus.zip"
if [ -f $SEED_CORPUS ]; then
echo "Using seed corpus: $SEED_CORPUS"
unzip -d /tmp/input/ $SEED_CORPUS > /dev/null
CORPUS=/tmp/input
fi
if [[ "$FUZZING_ENGINE" = afl ]]; then
# https://chromium.googlesource.com/chromium/src/+/master/third_party/afl/src/docs/env_variables.txt
export ASAN_OPTIONS="$ASAN_OPTIONS:abort_on_error=1:symbolize=0"
export MSAN_OPTIONS="$MSAN_OPTIONS:exit_code=86:symbolize=0"
export UBSAN_OPTIONS="$UBSAN_OPTIONS:symbolize=0"
export AFL_I_DONT_CARE_ABOUT_MISSING_CRASHES=1
export AFL_SKIP_CPUFREQ=1
rm -rf /tmp/afl_output && mkdir /tmp/afl_output
# AFL expects at least 1 file in the input dir.
echo input > /tmp/input/input
CMD_LINE="$OUT/afl-fuzz $AFL_FUZZER_ARGS -i /tmp/input -o /tmp/afl_output $@ $OUT/$FUZZER"
else
CMD_LINE="$OUT/$FUZZER $FUZZER_ARGS $@ $CORPUS"
OPTIONS_FILE="${FUZZER}.options"
if [ -f $OPTIONS_FILE ]; then
OPTIONS_ARGS=$(grep "=" $OPTIONS_FILE | sed 's/\(\w*\)\W*=\W*\(.*\)/-\1=\2 /g' | tr '\n' ' ')
CMD_LINE="$CMD_LINE $OPTIONS_ARGS"
fi
if [[ ! "$CMD_LINE" =~ "-dict=" ]]; then
if [ -f "$FUZZER.dict" ]; then
CMD_LINE="$CMD_LINE -dict=$FUZZER.dict"
fi
fi
fi
echo $CMD_LINE
bash -c "$CMD_LINE"
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