initial nokogiri libgumbo integration

projects/nokogiri/Dockerfile

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+# Copyright 2023 Google LLC
+#
+# 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.
+#
+###############################################################################
+
+FROM gcr.io/oss-fuzz-base/base-builder
+RUN apt-get update && apt-get --no-install-recommends install -y build-essential make curl wget
+
+RUN git clone https://github.com/sparklemotion/nokogiri.git
+
+RUN wget https://github.com/fuzzy-boiii23a/oss-fuzz-corpus/raw/main/nokogiri_corpus.zip
+
+COPY build.sh parse_fuzzer.cc gumbo.dict $SRC/

projects/nokogiri/build.sh

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+# Copyright 2023 Google LLC
+#
+# 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 SANITIZER_OPTS=""
+export SANITIZER_LINK=""
+
+if [ "$FUZZING_ENGINE" = "centipede" ]
+then
+  export CXXFLAGS="-fsanitize-coverage=trace-pc-guard,pc-table,trace-cmp -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -fno-builtin -gline-tables-only"
+  export CFLAGS="-fsanitize-coverage=trace-pc-guard,pc-table,trace-cmp -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -fno-builtin -gline-tables-only"
+  export ENGINE_LINK="$LIB_FUZZING_ENGINE -lc++"
+fi
+if [ "$FUZZING_ENGINE" = "libfuzzer" ]
+then
+  export CXXFLAGS="-fsanitize=fuzzer-no-link"
+  export CFLAGS="-fsanitize=fuzzer-no-link"
+  export ENGINE_LINK="$(find $(llvm-config --libdir) -name libclang_rt.fuzzer-x86_64.a | head -1)"
+fi
+if [ "$FUZZING_ENGINE" = "honggfuzz" ]
+then
+  export CXXFLAGS="-fsanitize-coverage=trace-pc-guard,indirect-calls,trace-cmp"
+  export CFLAGS="-fsanitize-coverage=trace-pc-guard,indirect-calls,trace-cmp"
+  export ENGINE_LINK="$(find . -name honggfuzz.a)"
+fi
+if [ "$FUZZING_ENGINE" = "afl" ]
+then
+  export CXXFLAGS="-fsanitize=fuzzer-no-link -fsanitize-coverage=trace-pc-guard,indirect-calls,trace-cmp"
+  export CFLAGS="-fsanitize=fuzzer-no-link -fsanitize-coverage=trace-pc-guard,indirect-calls,trace-cmp"
+  export ENGINE_LINK="$(find . -name libAFLDriver.a | head -1) $(find . -name afl-compiler-rt-64.o | head -1)"
+fi
+
+if [ "$SANITIZER" = "undefined" ]
+then
+  export SANITIZER_OPTS="-fsanitize=undefined"
+  export SANITIZER_LINK="$(find $(llvm-config --libdir) -name libclang_rt.ubsan_standalone_cxx-x86_64.a | head -1)"
+fi
+if [ "$SANITIZER" = "address" ]
+then
+  export SANITIZER_OPTS="-fsanitize=address"
+  export SANITIZER_LINK="$(find $(llvm-config --libdir) -name libclang_rt.asan_cxx-x86_64.a | head -1)"
+fi
+if [ "$SANITIZER" = "coverage" ]
+then
+  export SANITIZER_OPTS="-g -fprofile-instr-generate -fcoverage-mapping"
+  export SANITIZER_LINK=""
+fi
+
+
+export CXXFLAGS="-O0 $CXXFLAGS $SANITIZER_OPTS"
+export CFLAGS="-O0 $CFLAGS $SANITIZER_OPTS"
+cd nokogiri/gumbo-parser/src && make clean && make && cd -
+$CXX $CXXFLAGS -o parse_fuzzer parse_fuzzer.cc nokogiri/gumbo-parser/src/libgumbo.a $ENGINE_LINK $SANITIZER_LINK
+mv parse_fuzzer $OUT/parse_fuzzer
+mv gumbo.dict $OUT/parse_fuzzer.dict
+mv nokogiri_corpus.zip $OUT/parse_fuzzer_seed_corpus.zip