| /* |
| * 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(JNIEnv* env, jobject clazz) |
| { |
| return (jlong)new RestoreHelperBase(); |
| } |
| |
| static void |
| dtor(JNIEnv* env, jobject clazz, jlong ptr) |
| { |
| delete (RestoreHelperBase*)ptr; |
| } |
| |
| static jint |
| performBackup_native(JNIEnv* env, jobject clazz, jobject oldState, jlong data, |
| jobject newState, jobjectArray files, jobjectArray keys) |
| { |
| int err; |
| |
| // all parameters have already been checked against null |
| int oldStateFD = oldState != NULL ? jniGetFDFromFileDescriptor(env, oldState) : -1; |
| int newStateFD = jniGetFDFromFileDescriptor(env, newState); |
| BackupDataWriter* dataStream = (BackupDataWriter*)data; |
| |
| const int fileCount = env->GetArrayLength(files); |
| char const** filesUTF = (char const**)malloc(sizeof(char*)*fileCount); |
| for (int i=0; i<fileCount; i++) { |
| filesUTF[i] = env->GetStringUTFChars((jstring)env->GetObjectArrayElement(files, i), NULL); |
| } |
| |
| const int keyCount = env->GetArrayLength(keys); |
| char const** keysUTF = (char const**)malloc(sizeof(char*)*keyCount); |
| for (int i=0; i<keyCount; i++) { |
| keysUTF[i] = env->GetStringUTFChars((jstring)env->GetObjectArrayElement(keys, i), NULL); |
| } |
| |
| err = back_up_files(oldStateFD, dataStream, newStateFD, filesUTF, keysUTF, fileCount); |
| |
| for (int i=0; i<fileCount; i++) { |
| env->ReleaseStringUTFChars((jstring)env->GetObjectArrayElement(files, i), filesUTF[i]); |
| } |
| free(filesUTF); |
| |
| for (int i=0; i<keyCount; i++) { |
| env->ReleaseStringUTFChars((jstring)env->GetObjectArrayElement(keys, i), keysUTF[i]); |
| } |
| free(keysUTF); |
| |
| return (jint) err; |
| } |
| |
| |
| static jint |
| writeFile_native(JNIEnv* env, jobject clazz, jlong ptr, jstring filenameObj, jlong backupReaderPtr) |
| { |
| int err; |
| RestoreHelperBase* restore = (RestoreHelperBase*)ptr; |
| BackupDataReader* reader = (BackupDataReader*)backupReaderPtr; |
| char const* filename; |
| |
| filename = env->GetStringUTFChars(filenameObj, NULL); |
| |
| err = restore->WriteFile(String8(filename), reader); |
| |
| env->ReleaseStringUTFChars(filenameObj, filename); |
| |
| return (jint) err; |
| } |
| |
| static jint |
| writeSnapshot_native(JNIEnv* env, jobject clazz, jlong ptr, jobject fileDescriptor) |
| { |
| int err; |
| |
| RestoreHelperBase* restore = (RestoreHelperBase*)ptr; |
| int fd = jniGetFDFromFileDescriptor(env, fileDescriptor); |
| |
| err = restore->WriteSnapshot(fd); |
| |
| return (jint) err; |
| } |
| |
| static const JNINativeMethod g_methods[] = { |
| { "ctor", "()J", (void*)ctor }, |
| { "dtor", "(J)V", (void*)dtor }, |
| { "performBackup_native", |
| "(Ljava/io/FileDescriptor;JLjava/io/FileDescriptor;[Ljava/lang/String;[Ljava/lang/String;)I", |
| (void*)performBackup_native }, |
| { "writeFile_native", "(JLjava/lang/String;J)I", (void*)writeFile_native }, |
| { "writeSnapshot_native", "(JLjava/io/FileDescriptor;)I", (void*)writeSnapshot_native }, |
| }; |
| |
| int register_android_backup_FileBackupHelperBase(JNIEnv* env) |
| { |
| return RegisterMethodsOrDie(env, "android/app/backup/FileBackupHelperBase", |
| g_methods, NELEM(g_methods)); |
| } |
| |
| } |