build.sh (3433B)
1 #!/bin/bash 2 # Copyright 2018 Google Inc. 3 # 4 # Licensed under the Apache License, Version 2.0 (the "License"); 5 # you may not use this file except in compliance with the License. 6 # You may obtain a copy of the License at 7 # 8 # http://www.apache.org/licenses/LICENSE-2.0 9 # 10 # Unless required by applicable law or agreed to in writing, software 11 # distributed under the License is distributed on an "AS IS" BASIS, 12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 # See the License for the specific language governing permissions and 14 # limitations under the License. 15 # 16 ################################################################################ 17 18 # This script is meant to be run by the oss-fuzz infrastructure from the script 19 # https://github.com/google/oss-fuzz/blob/master/projects/libwebp/build.sh 20 # It builds the different fuzz targets. 21 # Only the libfuzzer engine is supported. 22 23 # To test changes to this file: 24 # - make changes and commit to your REPO 25 # - run: 26 # git clone --depth=1 git@github.com:google/oss-fuzz.git 27 # cd oss-fuzz 28 # - modify projects/libwebp/Dockerfile to point to your REPO 29 # - run: 30 # python3 infra/helper.py build_image libwebp 31 # # enter 'y' and wait for everything to be downloaded 32 # - run: 33 # python3 infra/helper.py build_fuzzers --sanitizer address libwebp 34 # # wait for the tests to be built 35 # And then run the fuzzer locally, for example: 36 # python3 infra/helper.py run_fuzzer libwebp \ 37 # --sanitizer address \ 38 # animencoder_fuzzer@AnimEncoder.AnimEncoderTest 39 40 set -eu 41 42 EXTRA_CMAKE_FLAGS="" 43 export CXXFLAGS="${CXXFLAGS} -DFUZZTEST_COMPATIBILITY_MODE" 44 EXTRA_CMAKE_FLAGS="-DFUZZTEST_COMPATIBILITY_MODE=libfuzzer" 45 46 # limit allocation size to reduce spurious OOMs 47 WEBP_CFLAGS="$CFLAGS -DWEBP_MAX_IMAGE_SIZE=838860800" # 800MiB 48 49 export CFLAGS="$WEBP_CFLAGS" 50 cmake -S . -B build -DWEBP_BUILD_FUZZTEST=ON ${EXTRA_CMAKE_FLAGS} 51 cd build && make -j$(nproc) && cd .. 52 53 find $SRC/libwebp-test-data -type f -size -32k -iname "*.webp" \ 54 -exec zip -qju fuzz_seed_corpus.zip "{}" \; 55 56 # The following is taken from https://github.com/google/oss-fuzz/blob/31ac7244748ea7390015455fb034b1f4eda039d9/infra/base-images/base-builder/compile_fuzztests.sh#L59 57 # Iterate the fuzz binaries and list each fuzz entrypoint in the binary. For 58 # each entrypoint create a wrapper script that calls into the binaries the 59 # given entrypoint as argument. 60 # The scripts will be named: 61 # {binary_name}@{fuzztest_entrypoint} 62 FUZZ_TEST_BINARIES_OUT_PATHS=$(find ./build/tests/fuzzer/ -executable -type f) 63 echo "Fuzz binaries: $FUZZ_TEST_BINARIES_OUT_PATHS" 64 for fuzz_main_file in $FUZZ_TEST_BINARIES_OUT_PATHS; do 65 FUZZ_TESTS=$($fuzz_main_file --list_fuzz_tests | cut -d ' ' -f 4) 66 cp -f ${fuzz_main_file} $OUT/ 67 fuzz_basename=$(basename $fuzz_main_file) 68 chmod -x $OUT/$fuzz_basename 69 for fuzz_entrypoint in $FUZZ_TESTS; do 70 TARGET_FUZZER="${fuzz_basename}@$fuzz_entrypoint" 71 # Write executer script 72 cat << EOF > $OUT/$TARGET_FUZZER 73 #!/bin/sh 74 # LLVMFuzzerTestOneInput for fuzzer detection. 75 this_dir=\$(dirname "\$0") 76 export TEST_DATA_DIRS=\$this_dir/corpus 77 chmod +x \$this_dir/$fuzz_basename 78 \$this_dir/$fuzz_basename --fuzz=$fuzz_entrypoint -- \$@ 79 chmod -x \$this_dir/$fuzz_basename 80 EOF 81 chmod +x $OUT/$TARGET_FUZZER 82 done 83 # Copy data. 84 cp fuzz_seed_corpus.zip $OUT/${fuzz_basename}_seed_corpus.zip 85 cp tests/fuzzer/fuzz.dict $OUT/${fuzz_basename}.dict 86 done