116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
// Copyright 2022 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <fcntl.h>
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#include <unistd.h>
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#include <cstdlib>
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#include <fstream>
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#include <iostream>
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#include <string>
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#include <vector>
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#include "absl/flags/flag.h"
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#include "absl/flags/parse.h"
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#include "absl/log/globals.h"
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#include "absl/log/initialize.h"
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#include "contrib/zstd/sandboxed.h"
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#include "contrib/zstd/utils/utils_zstd.h"
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ABSL_FLAG(bool, stream, false, "stream data to sandbox");
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ABSL_FLAG(bool, decompress, false, "decompress");
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ABSL_FLAG(bool, memory_mode, false, "in memory operations");
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ABSL_FLAG(uint32_t, level, 0, "compression level");
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absl::Status Stream(ZstdApi& api, std::string infile_s, std::string outfile_s) {
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std::ifstream infile(infile_s, std::ios::binary);
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if (!infile.is_open()) {
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return absl::UnavailableError(absl::StrCat("Unable to open ", infile_s));
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}
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std::ofstream outfile(outfile_s, std::ios::binary);
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if (!outfile.is_open()) {
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return absl::UnavailableError(absl::StrCat("Unable to open ", outfile_s));
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}
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if (absl::GetFlag(FLAGS_memory_mode)) {
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if (absl::GetFlag(FLAGS_decompress)) {
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return DecompressInMemory(api, infile, outfile);
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}
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return CompressInMemory(api, infile, outfile, absl::GetFlag(FLAGS_level));
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}
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if (absl::GetFlag(FLAGS_decompress)) {
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return DecompressStream(api, infile, outfile);
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}
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return CompressStream(api, infile, outfile, absl::GetFlag(FLAGS_level));
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}
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absl::Status FileDescriptor(ZstdApi& api, std::string infile_s,
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std::string outfile_s) {
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sapi::v::Fd infd(open(infile_s.c_str(), O_RDONLY));
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if (infd.GetValue() < 0) {
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return absl::UnavailableError(absl::StrCat("Unable to open ", infile_s));
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}
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sapi::v::Fd outfd(open(outfile_s.c_str(), O_WRONLY | O_CREAT));
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if (outfd.GetValue() < 0) {
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return absl::UnavailableError(absl::StrCat("Unable to open ", outfile_s));
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}
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if (absl::GetFlag(FLAGS_memory_mode)) {
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if (absl::GetFlag(FLAGS_decompress)) {
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return DecompressInMemoryFD(api, infd, outfd);
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}
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return CompressInMemoryFD(api, infd, outfd, absl::GetFlag(FLAGS_level));
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}
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if (absl::GetFlag(FLAGS_decompress)) {
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return DecompressStreamFD(api, infd, outfd);
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}
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return CompressStreamFD(api, infd, outfd, absl::GetFlag(FLAGS_level));
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}
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int main(int argc, char* argv[]) {
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std::string prog_name(argv[0]);
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absl::SetStderrThreshold(absl::LogSeverityAtLeast::kInfo);
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std::vector<char*> args = absl::ParseCommandLine(argc, argv);
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absl::InitializeLog();
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if (args.size() != 3) {
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std::cerr << "Usage:\n " << prog_name << " INPUT OUTPUT\n";
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return EXIT_FAILURE;
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}
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ZstdSapiSandbox sandbox;
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if (!sandbox.Init().ok()) {
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std::cerr << "Unable to start sandbox\n";
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return EXIT_FAILURE;
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}
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ZstdApi api(&sandbox);
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absl::Status status;
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if (absl::GetFlag(FLAGS_stream)) {
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status = Stream(api, argv[1], argv[2]);
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} else {
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status = FileDescriptor(api, argv[1], argv[2]);
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}
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if (!status.ok()) {
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std::cerr << "Unable to ";
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std::cerr << (absl::GetFlag(FLAGS_decompress) ? "decompress" : "compress");
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std::cerr << " file.\n" << status << "\n";
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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