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oss-fuzz: Update the README file, the Docker file and the build script

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Cosmin Truta 2024-09-12 18:26:10 +03:00
parent 5a7e87fc04
commit 3117b5f94a
3 changed files with 28 additions and 24 deletions
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17
contrib/oss-fuzz/Dockerfile
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@ -1,3 +1,5 @@
# Copyright 2024 Cosmin Truta
# Copyright 2017 Glenn Randers-Pehrson
# Copyright 2016 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
@ -15,11 +17,12 @@
################################################################################
FROM gcr.io/oss-fuzz-base/base-builder
MAINTAINER glennrp@gmail.com
RUN apt-get update && \
apt-get install -y make autoconf automake libtool
RUN git clone --depth 1 https://github.com/madler/zlib.git
RUN git clone --depth 1 https://github.com/glennrp/libpng.git
RUN cp libpng/contrib/oss-fuzz/build.sh $SRC
WORKDIR libpng
RUN apt-get update && \
apt-get install -y make autoconf automake libtool zlib1g-dev
RUN git clone --depth=1 https://github.com/pnggroup/libpng.git && \
git clone --depth=1 https://github.com/madler/zlib.git && \
cp libpng/contrib/oss-fuzz/build.sh $SRC
WORKDIR /home/libpng

4
contrib/oss-fuzz/README.txt
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@ -1,3 +1,7 @@
libpng additions to oss-fuzz
============================
Copyright (c) 2024 Cosmin Truta
Copyright (c) 2017 Glenn Randers-Pehrson
This code is released under the libpng license.

25
contrib/oss-fuzz/build.sh
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@ -1,6 +1,8 @@
#!/bin/bash -eu
#!/usr/bin/env bash
set -eu
# Copyright 2017-2018 Glenn Randers-Pehrson
# Copyright 2024 Cosmin Truta
# Copyright 2017 Glenn Randers-Pehrson
# Copyright 2016 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
@ -15,36 +17,31 @@
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Revisions by Glenn Randers-Pehrson, 2017:
# 1. Build only the library, not the tools (changed "make -j$(nproc) all" to
# "make -j$(nproc) libpng16.la").
# 2. Disabled WARNING and WRITE options in pnglibconf.dfa.
# 3. Build zlib alongside libpng
################################################################################
# Disable logging via library build configuration control.
cat scripts/pnglibconf.dfa | \
sed -e "s/option STDIO/option STDIO disabled/" \
-e "s/option WARNING /option WARNING disabled/" \
-e "s/option WRITE enables WRITE_INT_FUNCTIONS/option WRITE disabled/" \
> scripts/pnglibconf.dfa.temp
mv scripts/pnglibconf.dfa.temp scripts/pnglibconf.dfa
scripts/pnglibconf.dfa >scripts/pnglibconf.dfa.tmp
mv -f scripts/pnglibconf.dfa.tmp scripts/pnglibconf.dfa
# build the libpng library.
# Build the libpng library ("libpng16.la"), excluding the auxiliary tools.
autoreconf -f -i
./configure --with-libpng-prefix=OSS_FUZZ_
make -j$(nproc) clean
make -j$(nproc) libpng16.la
# build libpng_read_fuzzer.
# Build libpng_read_fuzzer.
$CXX $CXXFLAGS -std=c++11 -I. \
$SRC/libpng/contrib/oss-fuzz/libpng_read_fuzzer.cc \
-o $OUT/libpng_read_fuzzer \
-lFuzzingEngine .libs/libpng16.a -lz
# add seed corpus.
# Add seed corpus.
find $SRC/libpng -name "*.png" | grep -v crashers | \
xargs zip $OUT/libpng_read_fuzzer_seed_corpus.zip
cp $SRC/libpng/contrib/oss-fuzz/*.dict \
$SRC/libpng/contrib/oss-fuzz/*.options $OUT/
$SRC/libpng/contrib/oss-fuzz/*.options \
$OUT/