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#!/bin/sh -eu
# As a first step see README.md and follow the steps under "Running a fuzzer using clang".
# You might need 'gsutil' to download new corpora from the Google cloud:
# Read the docs at https://github.com/google/oss-fuzz/blob/master/docs/corpora.md
# then install 'google-cloud-sdk' and execute 'gcloud init'.
# Now 'gsutil' should be ready to use.
if test -z "$1"; then
echo "Usage: $0 <fuzzer target>"
echo "Example: $0 gnutls_base64_decode_fuzzer"
exit 1
fi
if ! grep -q FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION Makefile; then
echo "The fuzzers haven't been built for fuzzing (maybe for regression testing !?)"
echo "Please built regarding README.md and try again."
exit 1
fi
fuzzer=$1
project=gnutls
# sync/copy the OSS-Fuzz corpora into the .new directory
mkdir -p ${fuzzer}.new
cp -fp ${fuzzer}.in/* ${fuzzer}.new
gsutil cp $(gsutil ls gs://${project}-backup.clusterfuzz-external.appspot.com/corpus/libFuzzer/${fuzzer}|tail -n 1) ${fuzzer}.new
(cd ${fuzzer}.new && unzip -q -f -o *.zip && rm *.zip)
# create fuzzer target
BUILD_ONLY=1 ./run-clang.sh ${fuzzer}
# merge the corpora into the .in directory
./${fuzzer} -merge=1 ${fuzzer}.in ${fuzzer}.new
# now clear .new dir and put all corpora there
rm -f ${fuzzer}.new/*
mv ${fuzzer}.in/* ${fuzzer}.new
# now merge again (optimizes number of corpora)
./${fuzzer} -merge=1 ${fuzzer}.in ${fuzzer}.new
echo
echo "If new files have been added, 'git add' and 'git commit' them."
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