mirror of https://github.com/google/oss-fuzz.git
106 lines
3.9 KiB
Bash
Executable File
106 lines
3.9 KiB
Bash
Executable File
#!/bin/bash -eu
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# Copyright 2018 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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# Disable UBSan vptr since target built with -fno-rtti.
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export CFLAGS="$CFLAGS -fno-sanitize=vptr"
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export CXXFLAGS="$CXXFLAGS -fno-sanitize=vptr"
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declare -r FUZZER_TARGETS_CC=$(find . -name *_fuzz_test.cc)
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declare -r FUZZER_TARGETS="$(for t in ${FUZZER_TARGETS_CC}; do echo "${t:2:-3}"; done)"
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FUZZER_DICTIONARIES="\
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"
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# Skip gperftools, ASAN runs don't use tcmalloc.
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export DISABLE_GPERFTOOLS_BUILD=1
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sed -i 's#envoy_dependencies()#envoy_dependencies(skip_targets=["tcmalloc_and_profiler"])#' WORKSPACE
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# Copy $CFLAGS and $CXXFLAGS into Bazel command-line flags, for both
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# compilation and linking.
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#
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# Some flags, such as `-stdlib=libc++`, generate warnings if used on a C source
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# file. Since the build runs with `-Werror` this will cause it to break, so we
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# use `--conlyopt` and `--cxxopt` instead of `--copt`.
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declare -r EXTRA_BAZEL_FLAGS="$(
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for f in ${CFLAGS}; do
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echo "--conlyopt=${f}" "--linkopt=${f}"
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done
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for f in ${CXXFLAGS}; do
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echo "--cxxopt=${f}" "--linkopt=${f}"
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done
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)"
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declare BAZEL_BUILD_TARGETS=""
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declare FILTERED_FUZZER_TARGETS=""
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for t in ${FUZZER_TARGETS}
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do
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declare BAZEL_PATH="//"$(dirname "$t")":"$(basename "$t")
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declare TAGGED=$(bazel query "attr('tags', 'no_fuzz', ${BAZEL_PATH})")
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if [ -z "${TAGGED}" ]
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then
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FILTERED_FUZZER_TARGETS+="$t "
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BAZEL_BUILD_TARGETS+="${BAZEL_PATH}_driverless "
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fi
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done
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# Build driverless libraries.
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bazel build --verbose_failures --dynamic_mode=off --spawn_strategy=standalone \
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--genrule_strategy=standalone --strip=never \
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--copt=-fno-sanitize=vptr --linkopt=-fno-sanitize=vptr --linkopt=-lc++fs \
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--define tcmalloc=disabled --define signal_trace=disabled \
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--define ENVOY_CONFIG_ASAN=1 --copt -D__SANITIZE_ADDRESS__ \
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--define force_libcpp=enabled \
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--build_tag_filters=-no_asan \
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${EXTRA_BAZEL_FLAGS} \
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--linkopt="-lFuzzingEngine" \
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${BAZEL_BUILD_TARGETS[*]}
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# Profiling with coverage requires that we resolve+copy all Bazel symlinks and
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# also remap everything under proc/self/cwd to correspond to Bazel build paths.
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if [ "$SANITIZER" = "profile" ]
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then
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# The build invoker expects to pickup the root of source in $SRC, we need this
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# to look like proc/self/cwd.
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declare -r REMAP_PATH="${SRC}/proc/self/cwd"
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mkdir -p "${REMAP_PATH}"
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# For .cc, we only really care about source/ today.
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rsync -av "${SRC}"/envoy/source "${REMAP_PATH}"
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# For .h, and some generated artifacts, we need bazel-out/. Need to heavily
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# filter out the build objects from bazel-out/. Also need to resolve symlinks,
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# since they don't make sense outside the build container.
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rsync -avLk --include '*.h' --include '*.cc' --include '*/' --exclude '*' \
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"${SRC}"/envoy/bazel-out "${REMAP_PATH}"
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fi
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# Copy out test driverless binaries from bazel-bin/ and zip up related test
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# corpuses.
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for t in ${FILTERED_FUZZER_TARGETS}
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do
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TARGET_CORPUS=$(python "${SRC}"/find_corpus.py "$t")
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TARGET_BASE="$(expr "$t" : '.*/\(.*\)_fuzz_test')"
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TARGET_DRIVERLESS=bazel-bin/"${t}"_driverless
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echo "Copying fuzzer $t and corpus"
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cp "${TARGET_DRIVERLESS}" "${OUT}"/"${TARGET_BASE}"_fuzz_test
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zip "${OUT}/${TARGET_BASE}"_fuzz_test_seed_corpus.zip \
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"$(dirname "${t}")"/"${TARGET_CORPUS}"/*
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done
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# Copy dictionaries and options files to $OUT/
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for d in $FUZZER_DICTIONARIES; do
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cp "$d" "${OUT}"/
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done
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