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|
#!/bin/bash -eu
# Copyright 2018 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
################################################################################
export CFLAGS="$CFLAGS"
export CXXFLAGS="$CXXFLAGS"
declare -r FUZZER_TARGETS_CC=$(find . -name *_fuzz_test.cc)
declare -r FUZZER_TARGETS="$(for t in ${FUZZER_TARGETS_CC}; do echo "${t:2:-3}"; done)"
FUZZER_DICTIONARIES="\
"
# Copy $CFLAGS and $CXXFLAGS into Bazel command-line flags, for both
# compilation and linking.
#
# Some flags, such as `-stdlib=libc++`, generate warnings if used on a C source
# file. Since the build runs with `-Werror` this will cause it to break, so we
# use `--conlyopt` and `--cxxopt` instead of `--copt`.
#
declare -r EXTRA_BAZEL_FLAGS="$(
for f in ${CFLAGS}; do
echo "--conlyopt=${f}" "--linkopt=${f}"
done
for f in ${CXXFLAGS}; do
echo "--cxxopt=${f}" "--linkopt=${f}"
done
if [ "$SANITIZER" = "undefined" ]
then
# Bazel uses clang to link binary, which does not link clang_rt ubsan library for C++ automatically.
# See issue: https://github.com/bazelbuild/bazel/issues/8777
echo "--linkopt=\"$(find $(llvm-config --libdir) -name libclang_rt.ubsan_standalone_cxx-x86_64.a | head -1)\""
fi
)"
declare BAZEL_BUILD_TARGETS=""
declare BAZEL_CORPUS_TARGETS=""
declare FILTERED_FUZZER_TARGETS=""
for t in ${FUZZER_TARGETS}
do
declare BAZEL_PATH="//"$(dirname "$t")":"$(basename "$t")
declare TAGGED=$(bazel query "attr('tags', 'no_fuzz', ${BAZEL_PATH})")
if [ -z "${TAGGED}" ]
then
FILTERED_FUZZER_TARGETS+="$t "
BAZEL_BUILD_TARGETS+="${BAZEL_PATH}_driverless "
BAZEL_CORPUS_TARGETS+="${BAZEL_PATH}_corpus_tar "
fi
done
# Build driverless libraries.
bazel build --verbose_failures --dynamic_mode=off --spawn_strategy=standalone \
--genrule_strategy=standalone --strip=never \
--copt=-fno-sanitize=vptr --linkopt=-fno-sanitize=vptr \
--define tcmalloc=disabled --define signal_trace=disabled \
--define ENVOY_CONFIG_ASAN=1 --copt -D__SANITIZE_ADDRESS__ \
--define force_libcpp=enabled --build_tag_filters=-no_asan \
--linkopt=-lc++ --linkopt=-pthread ${EXTRA_BAZEL_FLAGS} \
${BAZEL_BUILD_TARGETS[*]} ${BAZEL_CORPUS_TARGETS[*]}
# Profiling with coverage requires that we resolve+copy all Bazel symlinks and
# also remap everything under proc/self/cwd to correspond to Bazel build paths.
if [ "$SANITIZER" = "coverage" ]
then
# The build invoker looks for sources in $SRC, but it turns out that we need
# to not be buried under src/, paths are expected at out/proc/self/cwd by
# the profiler.
declare -r REMAP_PATH="${OUT}/proc/self/cwd"
mkdir -p "${REMAP_PATH}"
# For .cc, we only really care about source/ today.
rsync -av "${SRC}"/envoy/source "${REMAP_PATH}"
rsync -av "${SRC}"/envoy/test "${REMAP_PATH}"
# Remove filesystem loop manually.
rm -rf "${SRC}"/envoy/bazel-envoy/external/envoy
# Clean up symlinks with a missing referrant.
find "${SRC}"/envoy/bazel-envoy/external -follow -type l -ls -delete || echo "Symlink cleanup soft fail"
rsync -avLk "${SRC}"/envoy/bazel-envoy/external "${REMAP_PATH}"
# For .h, and some generated artifacts, we need bazel-out/. Need to heavily
# filter out the build objects from bazel-out/. Also need to resolve symlinks,
# since they don't make sense outside the build container.
declare -r RSYNC_FILTER_ARGS=("--include" "*.h" "--include" "*.cc" "--include" \
"*.hpp" "--include" "*.cpp" "--include" "*.c" "--include" "*/" "--exclude" "*")
rsync -avLk "${RSYNC_FILTER_ARGS[@]}" "${SRC}"/envoy/bazel-out "${REMAP_PATH}"
rsync -avLkR "${RSYNC_FILTER_ARGS[@]}" "${HOME}" "${OUT}"
rsync -avLkR "${RSYNC_FILTER_ARGS[@]}" /tmp "${OUT}"
fi
# Copy out test driverless binaries from bazel-bin/.
for t in ${FILTERED_FUZZER_TARGETS}
do
TARGET_BASE="$(expr "$t" : '.*/\(.*\)_fuzz_test')"
TARGET_DRIVERLESS=bazel-bin/"${t}"_driverless
echo "Copying fuzzer $t"
cp "${TARGET_DRIVERLESS}" "${OUT}"/"${TARGET_BASE}"_fuzz_test
done
# Zip up related test corpuses.
# TODO(htuch): just use the .tar directly when
# https://github.com/google/oss-fuzz/issues/1918 is fixed.
CORPUS_UNTAR_PATH="${PWD}"/_tmp_corpus
for t in ${FILTERED_FUZZER_TARGETS}
do
echo "Extracting and zipping fuzzer $t corpus"
rm -rf "${CORPUS_UNTAR_PATH}"
mkdir -p "${CORPUS_UNTAR_PATH}"
tar -C "${CORPUS_UNTAR_PATH}" -xvf bazel-bin/"${t}"_corpus_tar.tar
TARGET_BASE="$(expr "$t" : '.*/\(.*\)_fuzz_test')"
# There may be *.dict files in this folder that need to be moved into the OUT dir.
find "${CORPUS_UNTAR_PATH}" -type f -name *.dict -exec mv -n {} "${OUT}"/ \;
zip "${OUT}/${TARGET_BASE}"_fuzz_test_seed_corpus.zip \
"${CORPUS_UNTAR_PATH}"/*
done
rm -rf "${CORPUS_UNTAR_PATH}"
# Copy dictionaries and options files to $OUT/
for d in $FUZZER_DICTIONARIES; do
cp "$d" "${OUT}"/
done
# Cleanup bazel- symlinks to avoid oss-fuzz trying to copy out of the build
# cache.
rm -f bazel-*
|
