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- // Copyright 2014 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "base/at_exit.h"
- #include "base/command_line.h"
- #include "base/files/file.h"
- #include "base/files/file_util.h"
- #include "base/strings/string_number_conversions.h"
- #include "net/spdy/fuzzing/hpack_fuzz_util.h"
- #include "net/third_party/quiche/src/quiche/spdy/core/hpack/hpack_constants.h"
- #include "net/third_party/quiche/src/quiche/spdy/core/hpack/hpack_encoder.h"
- #include "net/third_party/quiche/src/quiche/spdy/core/spdy_protocol.h"
- namespace {
- // Target file for generated HPACK header sets.
- const char kFileToWrite[] = "file-to-write";
- // Number of header sets to generate.
- const char kExampleCount[] = "example-count";
- } // namespace
- using spdy::HpackFuzzUtil;
- using std::map;
- // Generates a configurable number of header sets (using HpackFuzzUtil), and
- // sequentially encodes each header set with an HpackEncoder. Encoded header
- // sets are written to the output file in length-prefixed blocks.
- int main(int argc, char** argv) {
- base::AtExitManager exit_manager;
- base::CommandLine::Init(argc, argv);
- const base::CommandLine& command_line =
- *base::CommandLine::ForCurrentProcess();
- if (!command_line.HasSwitch(kFileToWrite) ||
- !command_line.HasSwitch(kExampleCount)) {
- LOG(ERROR) << "Usage: " << argv[0] << " --" << kFileToWrite
- << "=/path/to/file.out"
- << " --" << kExampleCount << "=1000";
- return -1;
- }
- std::string file_to_write = command_line.GetSwitchValueASCII(kFileToWrite);
- int example_count = 0;
- base::StringToInt(command_line.GetSwitchValueASCII(kExampleCount),
- &example_count);
- DVLOG(1) << "Writing output to " << file_to_write;
- base::File file_out(base::FilePath::FromUTF8Unsafe(file_to_write),
- base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE);
- CHECK(file_out.IsValid()) << file_out.error_details();
- HpackFuzzUtil::GeneratorContext context;
- HpackFuzzUtil::InitializeGeneratorContext(&context);
- spdy::HpackEncoder encoder;
- for (int i = 0; i != example_count; ++i) {
- spdy::Http2HeaderBlock headers =
- HpackFuzzUtil::NextGeneratedHeaderSet(&context);
- std::string buffer = encoder.EncodeHeaderBlock(headers);
- std::string prefix = HpackFuzzUtil::HeaderBlockPrefix(buffer.size());
- CHECK_LT(0, file_out.WriteAtCurrentPos(prefix.data(), prefix.size()));
- CHECK_LT(0, file_out.WriteAtCurrentPos(buffer.data(), buffer.size()));
- }
- CHECK(file_out.Flush());
- DVLOG(1) << "Generated " << example_count << " blocks.";
- return 0;
- }
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