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 <errno.h> 18 #include <stdio.h> 19 #include <stdlib.h> 20 21 #include <algorithm> 22 #include <memory> 23 #include <string> 24 #include <vector> 25 26 #include <ziparchive/zip_archive.h> 27 #include <ziparchive/zip_archive_stream_entry.h> 28 #include <ziparchive/zip_writer.h> 29 30 static void usage() { 31 fprintf(stderr, "usage: bionic_tests_zipalign ALIGNMENT INPUT_ZIP_FILE OUTPUT_ZIP_FILE\n"); 32 fprintf(stderr, " ALIGNMENT:\n"); 33 fprintf(stderr, " The new alignment of all entries in the new zip file.\n"); 34 fprintf(stderr, " INPUT_ZIP_FILE:\n"); 35 fprintf(stderr, " The input zip file that will be read but left unmodified.\n"); 36 fprintf(stderr, " OUTPUT_ZIP_FILE:\n"); 37 fprintf(stderr, " The output zip file that will be created from the input file.\n"); 38 } 39 40 using ZipData = std::pair<std::unique_ptr<ZipEntry>, std::unique_ptr<ZipString>>; 41 42 static bool GetEntries(ZipArchiveHandle handle, std::vector<ZipData>* entries) { 43 void* cookie; 44 int32_t return_value = StartIteration(handle, &cookie, nullptr, nullptr); 45 if (return_value != 0) { 46 fprintf(stderr, "Unable to iterate over entries: %s\n", ErrorCodeString(return_value)); 47 return false; 48 } 49 50 ZipEntry entry; 51 ZipString name; 52 while ((return_value = Next(cookie, &entry, &name)) == 0) { 53 entries->emplace_back(std::make_pair(std::make_unique<ZipEntry>(entry), 54 std::make_unique<ZipString>(name))); 55 } 56 if (return_value != -1) { 57 fprintf(stderr, "Error while iterating over zip entries: %s\n", ErrorCodeString(return_value)); 58 } else { 59 // Sort by offset. 60 std::sort(entries->begin(), entries->end(), 61 [](ZipData& a, ZipData& b) { return a.first->offset < b.first->offset; }); 62 } 63 64 EndIteration(cookie); 65 return return_value == -1; 66 } 67 68 static bool CreateAlignedZip(ZipArchiveHandle& handle, FILE* zip_dst, uint32_t alignment) { 69 std::vector<ZipData> entries; 70 // We will not free the memory created in entries since the program 71 // terminates right after this function is called. 72 if (!GetEntries(handle, &entries)) { 73 return false; 74 } 75 76 ZipWriter writer(zip_dst); 77 78 int32_t error; 79 for (auto& entry : entries) { 80 ZipEntry* zip_entry = entry.first.get(); 81 ZipString* zip_str = entry.second.get(); 82 83 size_t flags = 0; 84 if ((zip_entry->method & kCompressDeflated) != 0) { 85 flags |= ZipWriter::kCompress; 86 } 87 std::string zip_name(reinterpret_cast<const char*>(zip_str->name), zip_str->name_length); 88 error = writer.StartAlignedEntry(zip_name.c_str(), flags, alignment); 89 if (error != 0) { 90 fprintf(stderr, "StartAlignedEntry failed: %s\n", ZipWriter::ErrorCodeString(error)); 91 return false; 92 } 93 std::unique_ptr<ZipArchiveStreamEntry> stream( 94 ZipArchiveStreamEntry::Create(handle, *zip_entry)); 95 const std::vector<uint8_t>* data; 96 while ((data = stream->Read()) != nullptr) { 97 error = writer.WriteBytes(data->data(), data->size()); 98 if (error != 0) { 99 fprintf(stderr, "WriteBytes failed: %s\n", ZipWriter::ErrorCodeString(error)); 100 return false; 101 } 102 } 103 if (!stream->Verify()) { 104 fprintf(stderr, "Failed to verify zip stream writer entry.\n"); 105 return false; 106 } 107 error = writer.FinishEntry(); 108 if (error != 0) { 109 fprintf(stderr, "FinishEntry failed: %s\n", ZipWriter::ErrorCodeString(error)); 110 } 111 } 112 113 error = writer.Finish(); 114 if (error != 0) { 115 fprintf(stderr, "Finish failed: %s\n", ZipWriter::ErrorCodeString(error)); 116 return false; 117 } 118 return true; 119 } 120 121 int main(int argc, char* argv[]) { 122 if (argc != 4) { 123 usage(); 124 return 1; 125 } 126 127 char* end; 128 unsigned long int alignment = strtoul(argv[1], &end, 10); 129 if ((alignment == ULONG_MAX && errno == ERANGE) || *end != '\0') { 130 fprintf(stderr, "ALIGNMENT value is not a valid number: %s\n", argv[1]); 131 usage(); 132 return 1; 133 } 134 if (((alignment - 1) & alignment) != 0) { 135 fprintf(stderr, "ALIGNMENT value is not a power of 2: %s\n", argv[1]); 136 return 1; 137 } 138 139 ZipArchiveHandle handle; 140 141 int32_t return_value = OpenArchive(argv[2], &handle); 142 if (return_value != 0) { 143 CloseArchive(handle); 144 fprintf(stderr, "Unable to open '%s': %s\n", argv[2], ErrorCodeString(return_value)); 145 return 1; 146 } 147 148 FILE* zip_dst = fopen(argv[3], "we"); 149 if (zip_dst == nullptr) { 150 fprintf(stderr, "Unable to create '%s': %s\n", argv[3], strerror(errno)); 151 return 1; 152 } 153 154 bool success = CreateAlignedZip(handle, zip_dst, static_cast<uint32_t>(alignment)); 155 156 CloseArchive(handle); 157 fclose(zip_dst); 158 159 return success ? 0 : 1; 160 } 161
