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
17 #include <androidfw/BackupHelpers.h>
18 #include <utils/String8.h>
19
20 #include <fcntl.h>
21 #include <stdio.h>
22 #include <string.h>
23
24 using namespace android;
25
26 #include <unistd.h>
27
28 int
usage(int argc,const char ** argv)29 usage(int argc, const char** argv)
30 {
31 const char* p = argv[0];
32
33 fprintf(stderr, "%s: Backs up your data.\n"
34 "\n"
35 "usage: %s\n"
36 " Prints all of the data that can be backed up to stdout.\n"
37 "\n"
38 "usage: %s list FILE\n"
39 " Lists the backup entities in the file.\n"
40 "\n"
41 "usage: %s print NAME FILE\n"
42 " Prints the entity named NAME in FILE.\n",
43 p, p, p, p);
44 return 1;
45 }
46
47 int
perform_full_backup()48 perform_full_backup()
49 {
50 printf("this would have written all of your data to stdout\n");
51 return 0;
52 }
53
54 int
perform_list(const char * filename)55 perform_list(const char* filename)
56 {
57 int err;
58 int fd;
59
60 fd = open(filename, O_RDONLY);
61 if (fd == -1) {
62 fprintf(stderr, "Error opening: %s\n", filename);
63 return 1;
64 }
65
66 BackupDataReader reader(fd);
67 bool done;
68 int type;
69
70 while (reader.ReadNextHeader(&done, &type) == 0) {
71 if (done) {
72 break;
73 }
74 switch (type) {
75 case BACKUP_HEADER_ENTITY_V1:
76 {
77 String8 key;
78 size_t dataSize;
79 err = reader.ReadEntityHeader(&key, &dataSize);
80 if (err == 0) {
81 printf(" entity: %s (%d bytes)\n", key.string(), dataSize);
82 } else {
83 printf(" Error reading entity header\n");
84 }
85 break;
86 }
87 default:
88 {
89 printf("Unknown chunk type: 0x%08x\n", type);
90 break;
91 }
92 }
93 }
94
95 return 0;
96 }
97
perform_print(const char * entityname,const char * filename)98 int perform_print(const char* entityname, const char* filename)
99 {
100 printf("perform_print(%s, %s);", entityname, filename);
101 return 0;
102 }
103
104 int
main(int argc,const char ** argv)105 main(int argc, const char** argv)
106 {
107 if (argc <= 1) {
108 return perform_full_backup();
109 }
110 if (argc == 3 && 0 == strcmp(argv[1], "list")) {
111 return perform_list(argv[2]);
112 }
113 if (argc == 4 && 0 == strcmp(argv[1], "print")) {
114 return perform_print(argv[2], argv[3]);
115 }
116 return usage(argc, argv);
117 }
118
119