1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 #define LOG_TAG "ObjectInputStream" 19 20 #include "JNIHelp.h" 21 #include "JniConstants.h" 22 #include "ScopedUtfChars.h" 23 24 #define SETTER(FUNCTION_NAME, JNI_C_TYPE, JNI_TYPE_STRING, JNI_SETTER_FUNCTION) \ 25 static void FUNCTION_NAME(JNIEnv* env, jclass, jobject instance, \ 26 jclass declaringClass, jstring javaFieldName, JNI_C_TYPE newValue) { \ 27 if (instance == NULL) { \ 28 return; \ 29 } \ 30 ScopedUtfChars fieldName(env, javaFieldName); \ 31 if (fieldName.c_str() == NULL) { \ 32 return; \ 33 } \ 34 jfieldID fid = env->GetFieldID(declaringClass, fieldName.c_str(), JNI_TYPE_STRING); \ 35 if (fid != 0) { \ 36 env->JNI_SETTER_FUNCTION(instance, fid, newValue); \ 37 } \ 38 } 39 40 SETTER(ObjectInputStream_setFieldBool, jboolean, "Z", SetBooleanField) 41 SETTER(ObjectInputStream_setFieldByte, jbyte, "B", SetByteField) 42 SETTER(ObjectInputStream_setFieldChar, jchar, "C", SetCharField) 43 SETTER(ObjectInputStream_setFieldDouble, jdouble, "D", SetDoubleField) 44 SETTER(ObjectInputStream_setFieldFloat, jfloat, "F", SetFloatField) 45 SETTER(ObjectInputStream_setFieldInt, jint, "I", SetIntField) 46 SETTER(ObjectInputStream_setFieldLong, jlong, "J", SetLongField) 47 SETTER(ObjectInputStream_setFieldShort, jshort, "S", SetShortField) 48 49 static void ObjectInputStream_setFieldObject(JNIEnv* env, jclass, jobject instance, 50 jclass declaringClass, jstring javaFieldName, jstring javaFieldTypeName, jobject newValue) { 51 if (instance == NULL) { 52 return; 53 } 54 ScopedUtfChars fieldName(env, javaFieldName); 55 if (fieldName.c_str() == NULL) { 56 return; 57 } 58 ScopedUtfChars fieldTypeName(env, javaFieldTypeName); 59 if (fieldTypeName.c_str() == NULL) { 60 return; 61 } 62 jfieldID fid = env->GetFieldID(declaringClass, fieldName.c_str(), fieldTypeName.c_str()); 63 if (fid != 0) { 64 env->SetObjectField(instance, fid, newValue); 65 } 66 } 67 68 static jobject ObjectInputStream_newInstance(JNIEnv* env, jclass, 69 jclass instantiationClass, jclass constructorClass) { 70 jmethodID mid = env->GetMethodID(constructorClass, "<init>", "()V"); 71 if (mid == 0) { 72 return NULL; 73 } 74 return env->NewObject(instantiationClass, mid); 75 } 76 77 static JNINativeMethod gMethods[] = { 78 NATIVE_METHOD(ObjectInputStream, newInstance, "(Ljava/lang/Class;Ljava/lang/Class;)Ljava/lang/Object;"), 79 NATIVE_METHOD(ObjectInputStream, setFieldObject, "(Ljava/lang/Object;Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;Ljava/lang/Object;)V"), 80 NATIVE_METHOD(ObjectInputStream, setFieldByte, "(Ljava/lang/Object;Ljava/lang/Class;Ljava/lang/String;B)V"), 81 NATIVE_METHOD(ObjectInputStream, setFieldChar, "(Ljava/lang/Object;Ljava/lang/Class;Ljava/lang/String;C)V"), 82 NATIVE_METHOD(ObjectInputStream, setFieldDouble, "(Ljava/lang/Object;Ljava/lang/Class;Ljava/lang/String;D)V"), 83 NATIVE_METHOD(ObjectInputStream, setFieldFloat, "(Ljava/lang/Object;Ljava/lang/Class;Ljava/lang/String;F)V"), 84 NATIVE_METHOD(ObjectInputStream, setFieldInt, "(Ljava/lang/Object;Ljava/lang/Class;Ljava/lang/String;I)V"), 85 NATIVE_METHOD(ObjectInputStream, setFieldLong, "(Ljava/lang/Object;Ljava/lang/Class;Ljava/lang/String;J)V"), 86 NATIVE_METHOD(ObjectInputStream, setFieldShort, "(Ljava/lang/Object;Ljava/lang/Class;Ljava/lang/String;S)V"), 87 NATIVE_METHOD(ObjectInputStream, setFieldBool, "(Ljava/lang/Object;Ljava/lang/Class;Ljava/lang/String;Z)V"), 88 }; 89 int register_java_io_ObjectInputStream(JNIEnv* env) { 90 return jniRegisterNativeMethods(env, "java/io/ObjectInputStream", gMethods, NELEM(gMethods)); 91 } 92
