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// Copyright 2021 Code Intelligence GmbH
//
// 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.
#include "java_reproducer.h"
#include "fuzzed_data_provider.h"
#include "jvm_tooling.h"
namespace {
const char kRecordingFuzzedDataProviderClass[] =
"com/code_intelligence/jazzer/runtime/RecordingFuzzedDataProvider";
}
namespace jazzer {
jobject GetFuzzedDataProviderJavaObject(const JVM &jvm) {
static jobject java_object = nullptr;
if (java_object == nullptr) {
jclass java_class = jvm.FindClass(kFuzzedDataProviderImplClass);
jmethodID java_constructor = jvm.GetMethodID(java_class, "<init>", "()V");
jobject local_ref = jvm.GetEnv().NewObject(java_class, java_constructor);
// We leak a global reference here as it will be used until JVM exit.
java_object = jvm.GetEnv().NewGlobalRef(local_ref);
}
return java_object;
}
jobject GetRecordingFuzzedDataProviderJavaObject(const JVM &jvm) {
auto &env = jvm.GetEnv();
jclass java_class = jvm.FindClass(kRecordingFuzzedDataProviderClass);
jmethodID java_make_proxy = jvm.GetStaticMethodID(
java_class, "makeFuzzedDataProviderProxy",
"()Lcom/code_intelligence/jazzer/api/FuzzedDataProvider;", true);
jobject local_ref = env.CallStaticObjectMethod(java_class, java_make_proxy);
if (env.ExceptionCheck()) {
env.ExceptionDescribe();
exit(1);
}
// This global reference is deleted in SerializeRecordingFuzzedDataProvider.
jobject global_ref = env.NewGlobalRef(local_ref);
env.DeleteLocalRef(local_ref);
return global_ref;
}
std::string SerializeRecordingFuzzedDataProvider(const JVM &jvm,
jobject recorder) {
auto &env = jvm.GetEnv();
jclass java_class = jvm.FindClass(kRecordingFuzzedDataProviderClass);
jmethodID java_serialize =
jvm.GetStaticMethodID(java_class, "serializeFuzzedDataProviderProxy",
"(Lcom/code_intelligence/jazzer/api/"
"FuzzedDataProvider;)Ljava/lang/String;",
true);
auto serialized_recorder =
(jstring)env.CallStaticObjectMethod(java_class, java_serialize, recorder);
env.DeleteLocalRef(java_class);
env.DeleteGlobalRef(recorder);
if (env.ExceptionCheck()) {
env.ExceptionDescribe();
exit(1);
}
const char *serialized_recorder_cstr =
env.GetStringUTFChars(serialized_recorder, nullptr);
std::string out(serialized_recorder_cstr);
env.ReleaseStringUTFChars(serialized_recorder, serialized_recorder_cstr);
env.DeleteLocalRef(serialized_recorder);
return out;
}
} // namespace jazzer
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