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Commit b44ed765 authored by Pawan Wagh's avatar Pawan Wagh
Browse files

Adding JNI for create random parcel 

Adding an interface in random_parcel_lib and librandom_parcel_jni
to fill a parcel created by java fuzzers.

Test: m random_parcel_lib && m librandom_parcel_jni
Bug: 258075762
Change-Id: I0ecfdd676ee3881857b37cf80974d91492c4094f
parent e618e292

core/tests/fuzzers/FuzzService/FuzzBinder.java

+7 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
 */

package randomparcel;

import android.os.IBinder;

import android.os.Parcel;



public class FuzzBinder {

    static {
@@ -33,6 +34,12 @@ public class FuzzBinder { 
        fuzzServiceInternal(binder, data);

    }



    // This API creates random parcel object

    public static void createRandomParcel(Parcel parcel, byte[] data) {

        getRandomParcel(parcel, data);

    }



    private static native void fuzzServiceInternal(IBinder binder, byte[] data);

    private static native void getRandomParcel(Parcel parcel, byte[] data);

    private static native int registerNatives();

}

core/tests/fuzzers/FuzzService/random_parcel_jni.cpp

+14 −0
Original line number Diff line number Diff line
@@ -16,7 +16,9 @@ 


#include "random_parcel_jni.h"

#include <android_util_Binder.h>

#include <android_os_Parcel.h>

#include <fuzzbinder/libbinder_driver.h>

#include <fuzzbinder/random_parcel.h>

#include <fuzzer/FuzzedDataProvider.h>

using namespace android;
@@ -35,3 +37,15 @@ JNIEXPORT void JNICALL Java_randomparcel_FuzzBinder_fuzzServiceInternal(JNIEnv * 
JNIEXPORT jint JNICALL Java_randomparcel_FuzzBinder_registerNatives(JNIEnv* env) {

    return registerFrameworkNatives(env);

}



JNIEXPORT void JNICALL Java_randomparcel_FuzzBinder_getRandomParcel(JNIEnv *env, jobject thiz, jobject jparcel, jbyteArray fuzzData) {

    size_t len = static_cast<size_t>(env->GetArrayLength(fuzzData));

    uint8_t data[len];

    env->GetByteArrayRegion(fuzzData, 0, len, reinterpret_cast<jbyte*>(data));



    FuzzedDataProvider provider(data, len);

    RandomParcelOptions options;



    Parcel* parcel = parcelForJavaObject(env, jparcel);

    fillRandomParcel(parcel, std::move(provider), &options);

}

core/tests/fuzzers/FuzzService/random_parcel_jni.h

+2 −0
Original line number Diff line number Diff line
@@ -23,4 +23,6 @@ extern "C" { 


    // Function from AndroidRuntime

    jint registerFrameworkNatives(JNIEnv* env);



    JNIEXPORT void JNICALL Java_randomparcel_FuzzBinder_getRandomParcel(JNIEnv *env, jobject thiz, jobject parcel, jbyteArray fuzzData);

}