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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <map>
#include <string>
#include <stdio.h>
#include <unistd.h>
#include <android-base/stringprintf.h>
#include <ziparchive/zip_archive.h>
#include "config.h"
#include "ota_io.h"
#define OTAIO_MAX_FNAME_SIZE 128
static ZipArchiveHandle archive;
static bool is_retry = false;
static std::map<std::string, bool> should_inject_cache;
static std::string get_type_path(const char* io_type) {
return android::base::StringPrintf("%s/%s", OTAIO_BASE_DIR, io_type);
}
void ota_io_init(ZipArchiveHandle za, bool retry) {
archive = za;
is_retry = retry;
ota_set_fault_files();
}
bool should_fault_inject(const char* io_type) {
// archive will be NULL if we used an entry point other
// than updater/updater.cpp:main
if (archive == nullptr || is_retry) {
return false;
}
const std::string type_path = get_type_path(io_type);
if (should_inject_cache.find(type_path) != should_inject_cache.end()) {
return should_inject_cache[type_path];
}
ZipString zip_type_path(type_path.c_str());
ZipEntry entry;
int status = FindEntry(archive, zip_type_path, &entry);
should_inject_cache[type_path] = (status == 0);
return (status == 0);
}
bool should_hit_cache() {
return should_fault_inject(OTAIO_CACHE);
}
std::string fault_fname(const char* io_type) {
std::string type_path = get_type_path(io_type);
std::string fname;
fname.resize(OTAIO_MAX_FNAME_SIZE);
ZipString zip_type_path(type_path.c_str());
ZipEntry entry;
int status = FindEntry(archive, zip_type_path, &entry);
ExtractToMemory(archive, &entry, reinterpret_cast<uint8_t*>(&fname[0]), OTAIO_MAX_FNAME_SIZE);
return fname;
}
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