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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 <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <algorithm>
#include <memory>
#include <string>
#include <vector>
#include <ziparchive/zip_archive.h>
#include <ziparchive/zip_archive_stream_entry.h>
#include <ziparchive/zip_writer.h>
static void usage() {
fprintf(stderr, "usage: bionic_tests_zipalign ALIGNMENT INPUT_ZIP_FILE OUTPUT_ZIP_FILE\n");
fprintf(stderr, " ALIGNMENT:\n");
fprintf(stderr, " The new alignment of all entries in the new zip file.\n");
fprintf(stderr, " INPUT_ZIP_FILE:\n");
fprintf(stderr, " The input zip file that will be read but left unmodified.\n");
fprintf(stderr, " OUTPUT_ZIP_FILE:\n");
fprintf(stderr, " The output zip file that will be created from the input file.\n");
}
using ZipData = std::pair<std::unique_ptr<ZipEntry>, std::unique_ptr<ZipString>>;
static bool GetEntries(ZipArchiveHandle handle, std::vector<ZipData>* entries) {
void* cookie;
int32_t return_value = StartIteration(handle, &cookie, nullptr, nullptr);
if (return_value != 0) {
fprintf(stderr, "Unable to iterate over entries: %s\n", ErrorCodeString(return_value));
return false;
}
ZipEntry entry;
ZipString name;
while ((return_value = Next(cookie, &entry, &name)) == 0) {
entries->emplace_back(std::make_pair(std::make_unique<ZipEntry>(entry),
std::make_unique<ZipString>(name)));
}
if (return_value != -1) {
fprintf(stderr, "Error while iterating over zip entries: %s\n", ErrorCodeString(return_value));
} else {
// Sort by offset.
std::sort(entries->begin(), entries->end(),
[](ZipData& a, ZipData& b) { return a.first->offset < b.first->offset; });
}
EndIteration(cookie);
return return_value == -1;
}
static bool CreateAlignedZip(ZipArchiveHandle& handle, FILE* zip_dst, uint32_t alignment) {
std::vector<ZipData> entries;
// We will not free the memory created in entries since the program
// terminates right after this function is called.
if (!GetEntries(handle, &entries)) {
return false;
}
ZipWriter writer(zip_dst);
int32_t error;
for (auto& entry : entries) {
ZipEntry* zip_entry = entry.first.get();
ZipString* zip_str = entry.second.get();
size_t flags = 0;
if ((zip_entry->method & kCompressDeflated) != 0) {
flags |= ZipWriter::kCompress;
}
std::string zip_name(reinterpret_cast<const char*>(zip_str->name), zip_str->name_length);
error = writer.StartAlignedEntry(zip_name.c_str(), flags, alignment);
if (error != 0) {
fprintf(stderr, "StartAlignedEntry failed: %s\n", ZipWriter::ErrorCodeString(error));
return false;
}
std::unique_ptr<ZipArchiveStreamEntry> stream(
ZipArchiveStreamEntry::Create(handle, *zip_entry));
const std::vector<uint8_t>* data;
while ((data = stream->Read()) != nullptr) {
error = writer.WriteBytes(data->data(), data->size());
if (error != 0) {
fprintf(stderr, "WriteBytes failed: %s\n", ZipWriter::ErrorCodeString(error));
return false;
}
}
if (!stream->Verify()) {
fprintf(stderr, "Failed to verify zip stream writer entry.\n");
return false;
}
error = writer.FinishEntry();
if (error != 0) {
fprintf(stderr, "FinishEntry failed: %s\n", ZipWriter::ErrorCodeString(error));
}
}
error = writer.Finish();
if (error != 0) {
fprintf(stderr, "Finish failed: %s\n", ZipWriter::ErrorCodeString(error));
return false;
}
return true;
}
int main(int argc, char* argv[]) {
if (argc != 4) {
usage();
return 1;
}
char* end;
unsigned long int alignment = strtoul(argv[1], &end, 10);
if ((alignment == ULONG_MAX && errno == ERANGE) || *end != '\0') {
fprintf(stderr, "ALIGNMENT value is not a valid number: %s\n", argv[1]);
usage();
return 1;
}
if (((alignment - 1) & alignment) != 0) {
fprintf(stderr, "ALIGNMENT value is not a power of 2: %s\n", argv[1]);
return 1;
}
ZipArchiveHandle handle;
int32_t return_value = OpenArchive(argv[2], &handle);
if (return_value != 0) {
CloseArchive(handle);
fprintf(stderr, "Unable to open '%s': %s\n", argv[2], ErrorCodeString(return_value));
return false;
}
FILE* zip_dst = fopen(argv[3], "we");
if (zip_dst == nullptr) {
fprintf(stderr, "Unable to create '%s': %s\n", argv[3], strerror(errno));
return 1;
}
bool success = CreateAlignedZip(handle, zip_dst, static_cast<uint32_t>(alignment));
CloseArchive(handle);
fclose(zip_dst);
return success ? 0 : 1;
}
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