backup.cpp revision ebee1379eaf4306eb2de9437844009aa7eb18c28
18ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian/* 28ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * Copyright (C) 2009 The Android Open Source Project 38ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * 48ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * Licensed under the Apache License, Version 2.0 (the "License"); 58ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * you may not use this file except in compliance with the License. 68ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * You may obtain a copy of the License at 78ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * 88ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * http://www.apache.org/licenses/LICENSE-2.0 98ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * 108ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * Unless required by applicable law or agreed to in writing, software 118ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * distributed under the License is distributed on an "AS IS" BASIS, 128ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 138ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * See the License for the specific language governing permissions and 148ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian * limitations under the License. 158ae2335a3c93d0c00e998fdec18f64dfe43b94cbMathias Agopian */ 16d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 17b13b9bdad2baf6ad1ec2e56b6b7598fa20f55fc4Mathias Agopian#include <androidfw/BackupHelpers.h> 18d2110dbce071a236b6176de344ca797b737542ebJoe Onorato#include <utils/String8.h> 19d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 20d2110dbce071a236b6176de344ca797b737542ebJoe Onorato#include <fcntl.h> 21d2110dbce071a236b6176de344ca797b737542ebJoe Onorato#include <stdio.h> 22d2110dbce071a236b6176de344ca797b737542ebJoe Onorato#include <string.h> 23d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 24d2110dbce071a236b6176de344ca797b737542ebJoe Onoratousing namespace android; 25d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 26d2110dbce071a236b6176de344ca797b737542ebJoe Onorato#include <unistd.h> 27d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 28cfedceb8c180a2e176154d461659e0c3569dc931Andreas Gampestatic int usage(int /* argc */, const char** argv) 29d2110dbce071a236b6176de344ca797b737542ebJoe Onorato{ 30d2110dbce071a236b6176de344ca797b737542ebJoe Onorato const char* p = argv[0]; 31d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 32d2110dbce071a236b6176de344ca797b737542ebJoe Onorato fprintf(stderr, "%s: Backs up your data.\n" 33d2110dbce071a236b6176de344ca797b737542ebJoe Onorato "\n" 34d2110dbce071a236b6176de344ca797b737542ebJoe Onorato "usage: %s\n" 35d2110dbce071a236b6176de344ca797b737542ebJoe Onorato " Prints all of the data that can be backed up to stdout.\n" 36d2110dbce071a236b6176de344ca797b737542ebJoe Onorato "\n" 37d2110dbce071a236b6176de344ca797b737542ebJoe Onorato "usage: %s list FILE\n" 38d2110dbce071a236b6176de344ca797b737542ebJoe Onorato " Lists the backup entities in the file.\n" 39d2110dbce071a236b6176de344ca797b737542ebJoe Onorato "\n" 40d2110dbce071a236b6176de344ca797b737542ebJoe Onorato "usage: %s print NAME FILE\n" 41d2110dbce071a236b6176de344ca797b737542ebJoe Onorato " Prints the entity named NAME in FILE.\n", 42d2110dbce071a236b6176de344ca797b737542ebJoe Onorato p, p, p, p); 43d2110dbce071a236b6176de344ca797b737542ebJoe Onorato return 1; 44d2110dbce071a236b6176de344ca797b737542ebJoe Onorato} 45d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 46cfedceb8c180a2e176154d461659e0c3569dc931Andreas Gampestatic int perform_full_backup() 47d2110dbce071a236b6176de344ca797b737542ebJoe Onorato{ 48d2110dbce071a236b6176de344ca797b737542ebJoe Onorato printf("this would have written all of your data to stdout\n"); 49d2110dbce071a236b6176de344ca797b737542ebJoe Onorato return 0; 50d2110dbce071a236b6176de344ca797b737542ebJoe Onorato} 51d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 52cfedceb8c180a2e176154d461659e0c3569dc931Andreas Gampestatic int perform_list(const char* filename) 53d2110dbce071a236b6176de344ca797b737542ebJoe Onorato{ 54d2110dbce071a236b6176de344ca797b737542ebJoe Onorato int err; 55d2110dbce071a236b6176de344ca797b737542ebJoe Onorato int fd; 56d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 57d2110dbce071a236b6176de344ca797b737542ebJoe Onorato fd = open(filename, O_RDONLY); 58d2110dbce071a236b6176de344ca797b737542ebJoe Onorato if (fd == -1) { 59d2110dbce071a236b6176de344ca797b737542ebJoe Onorato fprintf(stderr, "Error opening: %s\n", filename); 60d2110dbce071a236b6176de344ca797b737542ebJoe Onorato return 1; 61d2110dbce071a236b6176de344ca797b737542ebJoe Onorato } 62d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 63d2110dbce071a236b6176de344ca797b737542ebJoe Onorato BackupDataReader reader(fd); 645f15d151b5101fadfe6cba1e8f4aa6367e8c603eJoe Onorato bool done; 65d2110dbce071a236b6176de344ca797b737542ebJoe Onorato int type; 66d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 675f15d151b5101fadfe6cba1e8f4aa6367e8c603eJoe Onorato while (reader.ReadNextHeader(&done, &type) == 0) { 685f15d151b5101fadfe6cba1e8f4aa6367e8c603eJoe Onorato if (done) { 695f15d151b5101fadfe6cba1e8f4aa6367e8c603eJoe Onorato break; 705f15d151b5101fadfe6cba1e8f4aa6367e8c603eJoe Onorato } 71d2110dbce071a236b6176de344ca797b737542ebJoe Onorato switch (type) { 72d2110dbce071a236b6176de344ca797b737542ebJoe Onorato case BACKUP_HEADER_ENTITY_V1: 73d2110dbce071a236b6176de344ca797b737542ebJoe Onorato { 74d2110dbce071a236b6176de344ca797b737542ebJoe Onorato String8 key; 75d2110dbce071a236b6176de344ca797b737542ebJoe Onorato size_t dataSize; 76d2110dbce071a236b6176de344ca797b737542ebJoe Onorato err = reader.ReadEntityHeader(&key, &dataSize); 77d2110dbce071a236b6176de344ca797b737542ebJoe Onorato if (err == 0) { 78ebee1379eaf4306eb2de9437844009aa7eb18c28Andreas Gampe printf(" entity: %s (%zu bytes)\n", key.string(), dataSize); 79d2110dbce071a236b6176de344ca797b737542ebJoe Onorato } else { 80d2110dbce071a236b6176de344ca797b737542ebJoe Onorato printf(" Error reading entity header\n"); 81d2110dbce071a236b6176de344ca797b737542ebJoe Onorato } 82d2110dbce071a236b6176de344ca797b737542ebJoe Onorato break; 83d2110dbce071a236b6176de344ca797b737542ebJoe Onorato } 84d2110dbce071a236b6176de344ca797b737542ebJoe Onorato default: 85d2110dbce071a236b6176de344ca797b737542ebJoe Onorato { 86d2110dbce071a236b6176de344ca797b737542ebJoe Onorato printf("Unknown chunk type: 0x%08x\n", type); 87d2110dbce071a236b6176de344ca797b737542ebJoe Onorato break; 88d2110dbce071a236b6176de344ca797b737542ebJoe Onorato } 89d2110dbce071a236b6176de344ca797b737542ebJoe Onorato } 90d2110dbce071a236b6176de344ca797b737542ebJoe Onorato } 91d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 92d2110dbce071a236b6176de344ca797b737542ebJoe Onorato return 0; 93d2110dbce071a236b6176de344ca797b737542ebJoe Onorato} 94d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 95cfedceb8c180a2e176154d461659e0c3569dc931Andreas Gampestatic int perform_print(const char* entityname, const char* filename) 96d2110dbce071a236b6176de344ca797b737542ebJoe Onorato{ 97d2110dbce071a236b6176de344ca797b737542ebJoe Onorato printf("perform_print(%s, %s);", entityname, filename); 98d2110dbce071a236b6176de344ca797b737542ebJoe Onorato return 0; 99d2110dbce071a236b6176de344ca797b737542ebJoe Onorato} 100d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 101cfedceb8c180a2e176154d461659e0c3569dc931Andreas Gampeint main(int argc, const char** argv) 102d2110dbce071a236b6176de344ca797b737542ebJoe Onorato{ 103d2110dbce071a236b6176de344ca797b737542ebJoe Onorato if (argc <= 1) { 104d2110dbce071a236b6176de344ca797b737542ebJoe Onorato return perform_full_backup(); 105d2110dbce071a236b6176de344ca797b737542ebJoe Onorato } 106d2110dbce071a236b6176de344ca797b737542ebJoe Onorato if (argc == 3 && 0 == strcmp(argv[1], "list")) { 107d2110dbce071a236b6176de344ca797b737542ebJoe Onorato return perform_list(argv[2]); 108d2110dbce071a236b6176de344ca797b737542ebJoe Onorato } 109d2110dbce071a236b6176de344ca797b737542ebJoe Onorato if (argc == 4 && 0 == strcmp(argv[1], "print")) { 110d2110dbce071a236b6176de344ca797b737542ebJoe Onorato return perform_print(argv[2], argv[3]); 111d2110dbce071a236b6176de344ca797b737542ebJoe Onorato } 112d2110dbce071a236b6176de344ca797b737542ebJoe Onorato return usage(argc, argv); 113d2110dbce071a236b6176de344ca797b737542ebJoe Onorato} 114d2110dbce071a236b6176de344ca797b737542ebJoe Onorato 115