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78 lines
3.0 KiB
78 lines
3.0 KiB
4 months ago
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# Copyright 2020 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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################################################################################
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#!/bin/bash
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# build libpng using the upstream-provided build.sh.
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# it will also build the vanilla (non-proto) fuzz target,
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# but we discard it.
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(cd libpng/ && contrib/oss-fuzz/build.sh && rm -rf $OUT/*)
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# Compile png_fuzz_proto.proto; should produce two files in genfiles/:
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# png_fuzz_proto.pb.cc png_fuzz_proto.pb.h
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rm -rf genfiles && mkdir genfiles && LPM/external.protobuf/bin/protoc png_fuzz_proto.proto --cpp_out=genfiles
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# compile the upstream-provided vanilla fuzz target
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# but replace LLVMFuzzerTestOneInput with FuzzPNG so that
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# png_proto_fuzzer_example.cc can call FuzzPNG from its own
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# LLVMFuzzerTestOneInput.
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$CXX $CXXFLAGS -c -DLLVMFuzzerTestOneInput=FuzzPNG libpng/contrib/oss-fuzz/libpng_read_fuzzer.cc -I libpng
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# compile & link the rest
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$CXX $CXXFLAGS png_proto_fuzzer_example.cc libpng_read_fuzzer.o genfiles/png_fuzz_proto.pb.cc \
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-I genfiles -I. -I libprotobuf-mutator/ -I LPM/external.protobuf/include \
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-lz \
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LPM/src/libfuzzer/libprotobuf-mutator-libfuzzer.a \
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LPM/src/libprotobuf-mutator.a \
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LPM/external.protobuf/lib/libprotobuf.a \
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libpng/.libs/libpng16.a \
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$LIB_FUZZING_ENGINE \
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-o $OUT/png_proto_fuzzer_example
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# custom png proto mutator
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$CXX $CXXFLAGS png_proto_fuzzer_example.cc png_proto_mutator.cc libpng_read_fuzzer.o genfiles/png_fuzz_proto.pb.cc \
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-I genfiles -I. -I libprotobuf-mutator/ -I LPM/external.protobuf/include \
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-lz \
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LPM/src/libfuzzer/libprotobuf-mutator-libfuzzer.a \
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LPM/src/libprotobuf-mutator.a \
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LPM/external.protobuf/lib/libprotobuf.a \
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libpng/.libs/libpng16.a \
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$LIB_FUZZING_ENGINE \
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-o $OUT/png_proto_fuzzer_example_custom_mutator
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echo > dummy.cc
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# A target, w/o protos but with a specialized custom mutator.
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$CXX $CXXFLAGS -c libpng/contrib/oss-fuzz/libpng_read_fuzzer.cc -I libpng
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$CXX $CXXFLAGS dummy.cc \
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-include fuzzer-test-suite/libpng-1.2.56/png_mutator.h \
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-D PNG_MUTATOR_DEFINE_LIBFUZZER_CUSTOM_MUTATOR \
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libpng_read_fuzzer.o \
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-lz \
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libpng/.libs/libpng16.a \
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$LIB_FUZZING_ENGINE \
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-o $OUT/png_custom_mutator_fuzzer_example
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# An experimental out-of-tree target, with a specialized custom mutator.
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$CXX $CXXFLAGS libpng_transforms_fuzzer.cc \
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-include fuzzer-test-suite/libpng-1.2.56/png_mutator.h \
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-D PNG_MUTATOR_DEFINE_LIBFUZZER_CUSTOM_MUTATOR \
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-I libpng \
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-lz \
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libpng/.libs/libpng16.a \
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$LIB_FUZZING_ENGINE \
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-o $OUT/png_transforms_fuzzer
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