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