Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Joe Onorato | 290bb01 | 2009-05-13 18:57:29 -0400 | [diff] [blame] | 17 | #define LOG_TAG "FileBackupHelper_native" |
| 18 | #include <utils/Log.h> |
| 19 | |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 20 | #include "JNIHelp.h" |
| 21 | #include <android_runtime/AndroidRuntime.h> |
| 22 | |
Mathias Agopian | 8ae2335 | 2009-06-04 13:53:57 -0700 | [diff] [blame] | 23 | #include <utils/BackupHelpers.h> |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 24 | |
| 25 | namespace android |
| 26 | { |
| 27 | |
Joe Onorato | 1cf5874 | 2009-06-12 11:06:24 -0700 | [diff] [blame] | 28 | // java.io.FileDescriptor |
Joe Onorato | 290bb01 | 2009-05-13 18:57:29 -0400 | [diff] [blame] | 29 | static jfieldID s_descriptorField = 0; |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 30 | |
| 31 | static int |
Joe Onorato | 06290a4 | 2009-06-18 20:10:37 -0700 | [diff] [blame] | 32 | ctor(JNIEnv* env, jobject clazz) |
| 33 | { |
| 34 | return (int)new RestoreHelperBase(); |
| 35 | } |
| 36 | |
| 37 | static void |
| 38 | dtor(JNIEnv* env, jobject clazz, jint ptr) |
| 39 | { |
| 40 | delete (RestoreHelperBase*)ptr; |
| 41 | } |
| 42 | |
| 43 | static int |
Joe Onorato | 23ecae3 | 2009-06-10 17:07:15 -0700 | [diff] [blame] | 44 | performBackup_native(JNIEnv* env, jobject clazz, jobject oldState, int data, |
| 45 | jobject newState, jobjectArray files, jobjectArray keys) |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 46 | { |
| 47 | int err; |
| 48 | |
| 49 | // all parameters have already been checked against null |
Joe Onorato | 290bb01 | 2009-05-13 18:57:29 -0400 | [diff] [blame] | 50 | int oldStateFD = oldState != NULL ? env->GetIntField(oldState, s_descriptorField) : -1; |
| 51 | int newStateFD = env->GetIntField(newState, s_descriptorField); |
Joe Onorato | d2110db | 2009-05-19 13:41:21 -0700 | [diff] [blame] | 52 | BackupDataWriter* dataStream = (BackupDataWriter*)data; |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 53 | |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 54 | const int fileCount = env->GetArrayLength(files); |
| 55 | char const** filesUTF = (char const**)malloc(sizeof(char*)*fileCount); |
| 56 | for (int i=0; i<fileCount; i++) { |
| 57 | filesUTF[i] = env->GetStringUTFChars((jstring)env->GetObjectArrayElement(files, i), NULL); |
| 58 | } |
| 59 | |
Joe Onorato | 23ecae3 | 2009-06-10 17:07:15 -0700 | [diff] [blame] | 60 | const int keyCount = env->GetArrayLength(keys); |
| 61 | char const** keysUTF = (char const**)malloc(sizeof(char*)*keyCount); |
| 62 | for (int i=0; i<keyCount; i++) { |
| 63 | keysUTF[i] = env->GetStringUTFChars((jstring)env->GetObjectArrayElement(keys, i), NULL); |
| 64 | } |
| 65 | |
| 66 | err = back_up_files(oldStateFD, dataStream, newStateFD, filesUTF, keysUTF, fileCount); |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 67 | |
| 68 | for (int i=0; i<fileCount; i++) { |
| 69 | env->ReleaseStringUTFChars((jstring)env->GetObjectArrayElement(files, i), filesUTF[i]); |
| 70 | } |
| 71 | free(filesUTF); |
Joe Onorato | 23ecae3 | 2009-06-10 17:07:15 -0700 | [diff] [blame] | 72 | |
| 73 | for (int i=0; i<keyCount; i++) { |
| 74 | env->ReleaseStringUTFChars((jstring)env->GetObjectArrayElement(keys, i), keysUTF[i]); |
| 75 | } |
| 76 | free(keysUTF); |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 77 | |
| 78 | return err; |
| 79 | } |
| 80 | |
Joe Onorato | 06290a4 | 2009-06-18 20:10:37 -0700 | [diff] [blame] | 81 | |
| 82 | static int |
| 83 | writeFile_native(JNIEnv* env, jobject clazz, jint ptr, jstring filenameObj, int backupReaderPtr) |
| 84 | { |
| 85 | int err; |
| 86 | RestoreHelperBase* restore = (RestoreHelperBase*)ptr; |
| 87 | BackupDataReader* reader = (BackupDataReader*)backupReaderPtr; |
| 88 | char const* filename; |
| 89 | |
| 90 | filename = env->GetStringUTFChars(filenameObj, NULL); |
| 91 | |
| 92 | err = restore->WriteFile(String8(filename), reader); |
| 93 | |
| 94 | env->ReleaseStringUTFChars(filenameObj, filename); |
| 95 | |
| 96 | return err; |
| 97 | } |
| 98 | |
| 99 | static int |
| 100 | writeSnapshot_native(JNIEnv* env, jobject clazz, jint ptr, jobject fileDescriptor) |
| 101 | { |
| 102 | int err; |
| 103 | |
| 104 | RestoreHelperBase* restore = (RestoreHelperBase*)ptr; |
| 105 | int fd = env->GetIntField(fileDescriptor, s_descriptorField); |
| 106 | |
| 107 | err = restore->WriteSnapshot(fd); |
| 108 | |
| 109 | return err; |
| 110 | } |
| 111 | |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 112 | static const JNINativeMethod g_methods[] = { |
Joe Onorato | 06290a4 | 2009-06-18 20:10:37 -0700 | [diff] [blame] | 113 | { "ctor", "()I", (void*)ctor }, |
| 114 | { "dtor", "(I)V", (void*)dtor }, |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 115 | { "performBackup_native", |
Joe Onorato | 23ecae3 | 2009-06-10 17:07:15 -0700 | [diff] [blame] | 116 | "(Ljava/io/FileDescriptor;ILjava/io/FileDescriptor;[Ljava/lang/String;[Ljava/lang/String;)I", |
| 117 | (void*)performBackup_native }, |
Joe Onorato | 06290a4 | 2009-06-18 20:10:37 -0700 | [diff] [blame] | 118 | { "writeFile_native", "(ILjava/lang/String;I)I", (void*)writeFile_native }, |
| 119 | { "writeSnapshot_native", "(ILjava/io/FileDescriptor;)I", (void*)writeSnapshot_native }, |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 120 | }; |
| 121 | |
Joe Onorato | 06290a4 | 2009-06-18 20:10:37 -0700 | [diff] [blame] | 122 | int register_android_backup_FileBackupHelperBase(JNIEnv* env) |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 123 | { |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 124 | jclass clazz; |
| 125 | |
| 126 | clazz = env->FindClass("java/io/FileDescriptor"); |
| 127 | LOG_FATAL_IF(clazz == NULL, "Unable to find class java.io.FileDescriptor"); |
| 128 | s_descriptorField = env->GetFieldID(clazz, "descriptor", "I"); |
| 129 | LOG_FATAL_IF(s_descriptorField == NULL, |
| 130 | "Unable to find descriptor field in java.io.FileDescriptor"); |
| 131 | |
Christopher Tate | 7adc274 | 2010-03-05 18:03:22 -0800 | [diff] [blame^] | 132 | return AndroidRuntime::registerNativeMethods(env, "android/app/backup/FileBackupHelperBase", |
Joe Onorato | b1a7ffe | 2009-05-06 18:06:21 -0700 | [diff] [blame] | 133 | g_methods, NELEM(g_methods)); |
| 134 | } |
| 135 | |
| 136 | } |