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Jed Estepff6df892015-12-15 16:04:53 -08001/*
2 * Copyright (C) 2015 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
Tao Baoac27a7a2017-09-28 17:43:53 -070017#include "config.h"
18
Jed Estepff6df892015-12-15 16:04:53 -080019#include <map>
20#include <string>
21
Jed Estep88dd7792016-03-22 15:25:27 -070022#include <android-base/stringprintf.h>
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070023#include <ziparchive/zip_archive.h>
Jed Estep88dd7792016-03-22 15:25:27 -070024
Jed Estepff6df892015-12-15 16:04:53 -080025#include "ota_io.h"
26
27#define OTAIO_MAX_FNAME_SIZE 128
28
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070029static ZipArchiveHandle archive;
Tianjie Xu47282422017-01-09 13:45:37 -080030static bool is_retry = false;
Jed Estep88dd7792016-03-22 15:25:27 -070031static std::map<std::string, bool> should_inject_cache;
Jed Estepff6df892015-12-15 16:04:53 -080032
Jed Estep88dd7792016-03-22 15:25:27 -070033static std::string get_type_path(const char* io_type) {
34 return android::base::StringPrintf("%s/%s", OTAIO_BASE_DIR, io_type);
Jed Estepff6df892015-12-15 16:04:53 -080035}
36
Tianjie Xu47282422017-01-09 13:45:37 -080037void ota_io_init(ZipArchiveHandle za, bool retry) {
Jed Estepff6df892015-12-15 16:04:53 -080038 archive = za;
Tianjie Xu47282422017-01-09 13:45:37 -080039 is_retry = retry;
Jed Estepff6df892015-12-15 16:04:53 -080040 ota_set_fault_files();
41}
42
43bool should_fault_inject(const char* io_type) {
44 // archive will be NULL if we used an entry point other
45 // than updater/updater.cpp:main
Tianjie Xu47282422017-01-09 13:45:37 -080046 if (archive == nullptr || is_retry) {
Jed Estepff6df892015-12-15 16:04:53 -080047 return false;
48 }
Jed Estep88dd7792016-03-22 15:25:27 -070049 const std::string type_path = get_type_path(io_type);
50 if (should_inject_cache.find(type_path) != should_inject_cache.end()) {
51 return should_inject_cache[type_path];
Jed Estepff6df892015-12-15 16:04:53 -080052 }
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070053 ZipString zip_type_path(type_path.c_str());
54 ZipEntry entry;
55 int status = FindEntry(archive, zip_type_path, &entry);
56 should_inject_cache[type_path] = (status == 0);
57 return (status == 0);
Jed Estepff6df892015-12-15 16:04:53 -080058}
59
60bool should_hit_cache() {
61 return should_fault_inject(OTAIO_CACHE);
62}
63
64std::string fault_fname(const char* io_type) {
Jed Estep88dd7792016-03-22 15:25:27 -070065 std::string type_path = get_type_path(io_type);
66 std::string fname;
67 fname.resize(OTAIO_MAX_FNAME_SIZE);
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070068 ZipString zip_type_path(type_path.c_str());
69 ZipEntry entry;
Tianjie Xuc89d1e72017-08-28 14:15:07 -070070 if (FindEntry(archive, zip_type_path, &entry) != 0) {
71 return {};
72 }
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070073 ExtractToMemory(archive, &entry, reinterpret_cast<uint8_t*>(&fname[0]), OTAIO_MAX_FNAME_SIZE);
Jed Estep88dd7792016-03-22 15:25:27 -070074 return fname;
Jed Estepff6df892015-12-15 16:04:53 -080075}