android_backup_FileBackupHelperBase.cpp revision 7adc274abd9c0c361b798c2348251358d7adeb18
1b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato/* 2b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * Copyright (C) 2009 The Android Open Source Project 3b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * 4b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * Licensed under the Apache License, Version 2.0 (the "License"); 5b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * you may not use this file except in compliance with the License. 6b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * You may obtain a copy of the License at 7b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * 8b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * http://www.apache.org/licenses/LICENSE-2.0 9b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * 10b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * Unless required by applicable law or agreed to in writing, software 11b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * distributed under the License is distributed on an "AS IS" BASIS, 12b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * See the License for the specific language governing permissions and 14b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * limitations under the License. 15b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato */ 16b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 17290bb011c5c1a9ba1f2116810b06cf52a9c36b3eJoe Onorato#define LOG_TAG "FileBackupHelper_native" 18290bb011c5c1a9ba1f2116810b06cf52a9c36b3eJoe Onorato#include <utils/Log.h> 19290bb011c5c1a9ba1f2116810b06cf52a9c36b3eJoe Onorato 20b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato#include "JNIHelp.h" 21b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato#include <android_runtime/AndroidRuntime.h> 22b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 238ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian#include <utils/BackupHelpers.h> 24b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 25b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onoratonamespace android 26b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato{ 27b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 281cf587496fcb1d652bab9fc6792fb106b6fefaa4Joe Onorato// java.io.FileDescriptor 29290bb011c5c1a9ba1f2116810b06cf52a9c36b3eJoe Onoratostatic jfieldID s_descriptorField = 0; 30b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 31b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onoratostatic int 3206290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onoratoctor(JNIEnv* env, jobject clazz) 3306290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato{ 3406290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato return (int)new RestoreHelperBase(); 3506290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato} 3606290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 3706290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onoratostatic void 3806290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onoratodtor(JNIEnv* env, jobject clazz, jint ptr) 3906290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato{ 4006290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato delete (RestoreHelperBase*)ptr; 4106290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato} 4206290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 4306290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onoratostatic int 4423ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe OnoratoperformBackup_native(JNIEnv* env, jobject clazz, jobject oldState, int data, 4523ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato jobject newState, jobjectArray files, jobjectArray keys) 46b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato{ 47b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato int err; 48b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 49b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato // all parameters have already been checked against null 50290bb011c5c1a9ba1f2116810b06cf52a9c36b3eJoe Onorato int oldStateFD = oldState != NULL ? env->GetIntField(oldState, s_descriptorField) : -1; 51290bb011c5c1a9ba1f2116810b06cf52a9c36b3eJoe Onorato int newStateFD = env->GetIntField(newState, s_descriptorField); 52d2110dbce071a236b6176de344ca797b737542ebJoe Onorato BackupDataWriter* dataStream = (BackupDataWriter*)data; 53b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 54b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato const int fileCount = env->GetArrayLength(files); 55b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato char const** filesUTF = (char const**)malloc(sizeof(char*)*fileCount); 56b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato for (int i=0; i<fileCount; i++) { 57b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato filesUTF[i] = env->GetStringUTFChars((jstring)env->GetObjectArrayElement(files, i), NULL); 58b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato } 59b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 6023ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato const int keyCount = env->GetArrayLength(keys); 6123ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato char const** keysUTF = (char const**)malloc(sizeof(char*)*keyCount); 6223ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato for (int i=0; i<keyCount; i++) { 6323ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato keysUTF[i] = env->GetStringUTFChars((jstring)env->GetObjectArrayElement(keys, i), NULL); 6423ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato } 6523ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato 6623ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato err = back_up_files(oldStateFD, dataStream, newStateFD, filesUTF, keysUTF, fileCount); 67b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 68b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato for (int i=0; i<fileCount; i++) { 69b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato env->ReleaseStringUTFChars((jstring)env->GetObjectArrayElement(files, i), filesUTF[i]); 70b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato } 71b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato free(filesUTF); 7223ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato 7323ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato for (int i=0; i<keyCount; i++) { 7423ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato env->ReleaseStringUTFChars((jstring)env->GetObjectArrayElement(keys, i), keysUTF[i]); 7523ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato } 7623ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato free(keysUTF); 77b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 78b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato return err; 79b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato} 80b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 8106290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 8206290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onoratostatic int 8306290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe OnoratowriteFile_native(JNIEnv* env, jobject clazz, jint ptr, jstring filenameObj, int backupReaderPtr) 8406290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato{ 8506290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato int err; 8606290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato RestoreHelperBase* restore = (RestoreHelperBase*)ptr; 8706290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato BackupDataReader* reader = (BackupDataReader*)backupReaderPtr; 8806290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato char const* filename; 8906290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 9006290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato filename = env->GetStringUTFChars(filenameObj, NULL); 9106290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 9206290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato err = restore->WriteFile(String8(filename), reader); 9306290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 9406290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato env->ReleaseStringUTFChars(filenameObj, filename); 9506290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 9606290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato return err; 9706290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato} 9806290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 9906290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onoratostatic int 10006290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe OnoratowriteSnapshot_native(JNIEnv* env, jobject clazz, jint ptr, jobject fileDescriptor) 10106290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato{ 10206290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato int err; 10306290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 10406290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato RestoreHelperBase* restore = (RestoreHelperBase*)ptr; 10506290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato int fd = env->GetIntField(fileDescriptor, s_descriptorField); 10606290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 10706290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato err = restore->WriteSnapshot(fd); 10806290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 10906290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato return err; 11006290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato} 11106290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato 112b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onoratostatic const JNINativeMethod g_methods[] = { 11306290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato { "ctor", "()I", (void*)ctor }, 11406290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato { "dtor", "(I)V", (void*)dtor }, 115b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato { "performBackup_native", 11623ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato "(Ljava/io/FileDescriptor;ILjava/io/FileDescriptor;[Ljava/lang/String;[Ljava/lang/String;)I", 11723ecae3bbb60c5af940f3a22170d75eb6ac05b69Joe Onorato (void*)performBackup_native }, 11806290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato { "writeFile_native", "(ILjava/lang/String;I)I", (void*)writeFile_native }, 11906290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onorato { "writeSnapshot_native", "(ILjava/io/FileDescriptor;)I", (void*)writeSnapshot_native }, 120b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato}; 121b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 12206290a4bb9b280fa14a2bbeb2d3ceb09396a78c3Joe Onoratoint register_android_backup_FileBackupHelperBase(JNIEnv* env) 123b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato{ 124b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato jclass clazz; 125b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 126b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato clazz = env->FindClass("java/io/FileDescriptor"); 127b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato LOG_FATAL_IF(clazz == NULL, "Unable to find class java.io.FileDescriptor"); 128b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato s_descriptorField = env->GetFieldID(clazz, "descriptor", "I"); 129b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato LOG_FATAL_IF(s_descriptorField == NULL, 130b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato "Unable to find descriptor field in java.io.FileDescriptor"); 131b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 1327adc274abd9c0c361b798c2348251358d7adeb18Christopher Tate return AndroidRuntime::registerNativeMethods(env, "android/app/backup/FileBackupHelperBase", 133b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato g_methods, NELEM(g_methods)); 134b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato} 135b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 136b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato} 137