1 /* 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 17 #include <map> 18 #include <string> 19 20 #include <stdio.h> 21 #include <unistd.h> 22 23 #include <android-base/stringprintf.h> 24 25 #include "minzip/Zip.h" 26 #include "config.h" 27 #include "ota_io.h" 28 29 #define OTAIO_MAX_FNAME_SIZE 128 30 31 static ZipArchive* archive; 32 static std::map<std::string, bool> should_inject_cache; 33 34 static std::string get_type_path(const char* io_type) { 35 return android::base::StringPrintf("%s/%s", OTAIO_BASE_DIR, io_type); 36 } 37 38 void ota_io_init(ZipArchive* za) { 39 archive = za; 40 ota_set_fault_files(); 41 } 42 43 bool 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 46 if (archive == NULL) { 47 return false; 48 } 49 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]; 52 } 53 const ZipEntry* entry = mzFindZipEntry(archive, type_path.c_str()); 54 should_inject_cache[type_path] = entry != nullptr; 55 return entry != NULL; 56 } 57 58 bool should_hit_cache() { 59 return should_fault_inject(OTAIO_CACHE); 60 } 61 62 std::string fault_fname(const char* io_type) { 63 std::string type_path = get_type_path(io_type); 64 std::string fname; 65 fname.resize(OTAIO_MAX_FNAME_SIZE); 66 const ZipEntry* entry = mzFindZipEntry(archive, type_path.c_str()); 67 mzReadZipEntry(archive, entry, &fname[0], OTAIO_MAX_FNAME_SIZE); 68 return fname; 69 } 70
