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#!/bin/bash -eu
# Copyright 2021 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.
#
################################################################################
# Build protoc with default options.
unset CFLAGS CXXFLAGS
mkdir $SRC/protobuf-install/
cd $SRC/protobuf/
./autogen.sh
./configure --prefix=$SRC/protobuf-install
make -j$(nproc)
make install
export PROTOC="$SRC/protobuf-install/bin/protoc"
# Build protobuf-java (requires protoc in source tree).
cd $SRC/protobuf/java/
cp $PROTOC $SRC/protobuf/src/
MAVEN_ARGS="-Dmaven.test.skip=true -Djavac.src.version=15 -Djavac.target.version=15"
$MVN package $MAVEN_ARGS
CURRENT_VERSION=$($MVN org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate \
-Dexpression=project.version -q -DforceStdout)
cp "core/target/protobuf-java-$CURRENT_VERSION.jar" $OUT/protobuf-java.jar
# Compile test protos with protoc.
cd $SRC/
$PROTOC --java_out=. --proto_path=. test-full.proto
jar --create --file $OUT/test-full.jar foo/*
ALL_JARS="protobuf-java.jar test-full.jar"
# The classpath at build-time includes the project jars in $OUT as well as the
# Jazzer API.
BUILD_CLASSPATH=$(echo $ALL_JARS | xargs printf -- "$OUT/%s:"):$JAZZER_API_PATH
# All .jar and .class files lie in the same directory as the fuzzer at runtime.
RUNTIME_CLASSPATH=$(echo $ALL_JARS | xargs printf -- "\$this_dir/%s:"):\$this_dir
for fuzzer in $(find $SRC -name '*Fuzzer.java'); do
fuzzer_basename=$(basename -s .java $fuzzer)
javac -cp $BUILD_CLASSPATH $fuzzer
cp $SRC/$fuzzer_basename.class $OUT/
# Create an execution wrapper that executes Jazzer with the correct arguments.
echo "#!/bin/sh
# LLVMFuzzerTestOneInput for fuzzer detection.
this_dir=\$(dirname \"\$0\")
LD_LIBRARY_PATH=\"$JVM_LD_LIBRARY_PATH\" \
\$this_dir/jazzer_driver --agent_path=\$this_dir/jazzer_agent_deploy.jar \
--cp=$RUNTIME_CLASSPATH \
--target_class=$fuzzer_basename \
--jvm_args=\"-Xmx2048m\" \
\$@" > $OUT/$fuzzer_basename
chmod +x $OUT/$fuzzer_basename
done
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