97 lines
3.1 KiB
C++
97 lines
3.1 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 <iostream>
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#include <string>
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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/brotli/sandboxed.h"
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#include "contrib/brotli/utils/utils_brotli.h"
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#include "contrib/brotli/utils/utils_brotli_dec.h"
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#include "contrib/brotli/utils/utils_brotli_enc.h"
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ABSL_FLAG(bool, decompress, false, "decompress");
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absl::Status CompressInMemory(BrotliSandbox& sandbox,
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const std::string& in_file_s,
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const std::string& out_file_s) {
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BrotliEncoder enc(&sandbox);
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if (!enc.IsInit()) {
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return absl::UnavailableError("Unable to init brotli encoder");
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}
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SAPI_ASSIGN_OR_RETURN(std::vector<uint8_t> buf_in, ReadFile(in_file_s));
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SAPI_RETURN_IF_ERROR(enc.Compress(buf_in));
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SAPI_ASSIGN_OR_RETURN(std::vector<uint8_t> buf_out, enc.TakeOutput());
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SAPI_RETURN_IF_ERROR(WriteFile(out_file_s, buf_out));
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return absl::OkStatus();
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}
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absl::Status DecompressInMemory(BrotliSandbox& sandbox,
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const std::string& in_file_s,
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const std::string& out_file_s) {
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BrotliDecoder dec(&sandbox);
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if (!dec.IsInit()) {
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return absl::UnavailableError("Unable to init brotli decoder");
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}
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SAPI_ASSIGN_OR_RETURN(std::vector<uint8_t> buf_in, ReadFile(in_file_s));
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SAPI_ASSIGN_OR_RETURN(BrotliDecoderResult ret, dec.Decompress(buf_in));
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if (ret != BROTLI_DECODER_RESULT_SUCCESS) {
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return absl::UnavailableError("Compressed file corrupt");
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}
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SAPI_ASSIGN_OR_RETURN(std::vector<uint8_t> buf_out, dec.TakeOutput());
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SAPI_RETURN_IF_ERROR(WriteFile(out_file_s, buf_out));
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return absl::OkStatus();
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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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std::string in_file_s(args[1]);
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std::string out_file_s(args[2]);
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BrotliSapiSandbox 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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absl::Status status;
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if (absl::GetFlag(FLAGS_decompress)) {
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status = DecompressInMemory(sandbox, in_file_s, out_file_s);
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} else {
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status = CompressInMemory(sandbox, in_file_s, out_file_s);
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}
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if (!status.ok()) {
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std::cerr << 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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