| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #define LOG_TAG "FileBackupHelper_native" |
| #include <utils/Log.h> |
| |
| #include "JNIHelp.h" |
| #include "core_jni_helpers.h" |
| |
| #include <androidfw/BackupHelpers.h> |
| |
| namespace android |
| { |
| |
| static jlong |
| ctor_native(JNIEnv* env, jobject clazz, jobject fileDescriptor) |
| { |
| int fd = jniGetFDFromFileDescriptor(env, fileDescriptor); |
| if (fd == -1) { |
| return (jlong)NULL; |
| } |
| |
| return (jlong)new BackupDataWriter(fd); |
| } |
| |
| static void |
| dtor_native(JNIEnv* env, jobject clazz, jlong w) |
| { |
| delete (BackupDataWriter*)w; |
| } |
| |
| static jint |
| writeEntityHeader_native(JNIEnv* env, jobject clazz, jlong w, jstring key, jint dataSize) |
| { |
| int err; |
| BackupDataWriter* writer = (BackupDataWriter*)w; |
| |
| const char* keyUTF = env->GetStringUTFChars(key, NULL); |
| if (keyUTF == NULL) { |
| return -1; |
| } |
| err = writer->WriteEntityHeader(String8(keyUTF), dataSize); |
| |
| env->ReleaseStringUTFChars(key, keyUTF); |
| |
| return (jint)err; |
| } |
| |
| static jint |
| writeEntityData_native(JNIEnv* env, jobject clazz, jlong w, jbyteArray data, jint size) |
| { |
| int err; |
| BackupDataWriter* writer = (BackupDataWriter*)w; |
| |
| if (env->GetArrayLength(data) < size) { |
| // size mismatch |
| return -1; |
| } |
| |
| jbyte* dataBytes = env->GetByteArrayElements(data, NULL); |
| if (dataBytes == NULL) { |
| return -1; |
| } |
| |
| err = writer->WriteEntityData(dataBytes, size); |
| |
| env->ReleaseByteArrayElements(data, dataBytes, JNI_ABORT); |
| |
| return (jint)err; |
| } |
| |
| static void |
| setKeyPrefix_native(JNIEnv* env, jobject clazz, jlong w, jstring keyPrefixObj) |
| { |
| BackupDataWriter* writer = (BackupDataWriter*)w; |
| |
| const char* keyPrefixUTF = env->GetStringUTFChars(keyPrefixObj, NULL); |
| String8 keyPrefix(keyPrefixUTF ? keyPrefixUTF : ""); |
| |
| writer->SetKeyPrefix(keyPrefix); |
| |
| env->ReleaseStringUTFChars(keyPrefixObj, keyPrefixUTF); |
| } |
| |
| static const JNINativeMethod g_methods[] = { |
| { "ctor", "(Ljava/io/FileDescriptor;)J", (void*)ctor_native }, |
| { "dtor", "(J)V", (void*)dtor_native }, |
| { "writeEntityHeader_native", "(JLjava/lang/String;I)I", (void*)writeEntityHeader_native }, |
| { "writeEntityData_native", "(J[BI)I", (void*)writeEntityData_native }, |
| { "setKeyPrefix_native", "(JLjava/lang/String;)V", (void*)setKeyPrefix_native }, |
| }; |
| |
| int register_android_backup_BackupDataOutput(JNIEnv* env) |
| { |
| //ALOGD("register_android_backup_BackupDataOutput"); |
| return RegisterMethodsOrDie(env, "android/app/backup/BackupDataOutput", |
| g_methods, NELEM(g_methods)); |
| } |
| |
| } |