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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include <cmath>
#include <string>
#include "base/compiler_specific.h"
#include "base/files/file_util.h"
#include "base/files/platform_file.h"
#include "base/functional/bind.h"
#include "base/functional/callback_forward.h"
#include "base/json/json_reader.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/memory/scoped_refptr.h"
#include "base/message_loop/message_pump_type.h"
#include "base/task/bind_post_task.h"
#include "base/task/single_thread_task_runner.h"
#include "base/test/task_environment.h"
#include "base/threading/platform_thread.h"
#include "base/threading/thread.h"
#include "base/time/time.h"
#include "chrome/test/chromedriver/net/pipe_writer_posix.h"
#include "chrome/test/chromedriver/net/timeout.h"
#include "net/base/completion_once_callback.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
namespace {
std::pair<std::string, int> ReadAll(base::File read_pipe) {
std::string received_message;
scoped_refptr<net::IOBufferWithSize> buffer =
base::MakeRefCounted<net::IOBufferWithSize>(4096);
int rv = 0;
while (true) {
rv = read_pipe.ReadAtCurrentPos(buffer->data(), buffer->size());
if (rv <= 0) {
break;
}
received_message.insert(received_message.end(), buffer->data(),
buffer->data() + rv);
}
return std::make_pair(std::move(received_message), rv);
}
int WriteAll(std::unique_ptr<PipeWriterPosix> writer, std::string message) {
scoped_refptr<net::IOBufferWithSize> buffer =
base::MakeRefCounted<net::IOBufferWithSize>(4096);
auto callback = [](base::RepeatingClosure extra_callback, int* written,
int rv) {
*written = rv;
extra_callback.Run();
};
int rv = 0;
const int to_send = static_cast<int>(message.size());
int sent = 0;
while (sent < to_send) {
base::RunLoop run_loop;
int written = 0;
int count = std::min(buffer->size(), to_send - sent);
std::copy(std::next(message.begin(), sent),
std::next(message.begin(), sent + count), buffer->data());
rv = writer->Write(
buffer.get(), count,
base::BindOnce(callback, run_loop.QuitClosure(), &written));
if (rv == net::ERR_IO_PENDING) {
run_loop.Run();
rv = written;
}
if (rv <= 0) {
sent = rv;
break;
}
sent += rv;
}
return sent;
}
} // namespace
class PipeWriterPosixTest : public testing::Test {
protected:
PipeWriterPosixTest() : long_timeout_(base::Minutes(1)) {}
~PipeWriterPosixTest() override = default;
void SetUp() override {}
void TearDown() override {}
Timeout long_timeout() const { return Timeout(long_timeout_); }
bool CreatePipeWriter(std::unique_ptr<PipeWriterPosix>* writer,
base::File* read_pipe) {
base::ScopedPlatformFile read_file;
base::ScopedPlatformFile write_file;
if (!base::CreatePipe(&read_file, &write_file)) {
VLOG(0) << "unable to create a pipe";
return false;
}
if (!base::SetCloseOnExec(write_file.get())) {
VLOG(0) << "unable to label the parent pipes as close on exec";
return false;
}
*read_pipe = base::File(std::move(read_file));
*writer = std::make_unique<PipeWriterPosix>();
(*writer)->Bind(std::move(write_file));
return true;
}
void WriteAll(scoped_refptr<base::TaskRunner> task_runner,
std::unique_ptr<PipeWriterPosix> writer,
std::string message,
base::OnceCallback<void(int)> callback) {
task_runner->PostTask(
FROM_HERE, base::BindOnce(&::WriteAll, std::move(writer), message)
.Then(base::BindPostTask(
task_environment_.GetMainThreadTaskRunner(),
std::move(callback))));
}
base::test::SingleThreadTaskEnvironment task_environment_{
base::test::SingleThreadTaskEnvironment::MainThreadType::IO};
const base::TimeDelta long_timeout_;
};
TEST_F(PipeWriterPosixTest, Ctor) {
PipeWriterPosix writer;
EXPECT_FALSE(writer.IsConnected());
}
TEST_F(PipeWriterPosixTest, CreateAndBind) {
std::unique_ptr<PipeWriterPosix> writer;
base::File read_pipe;
EXPECT_TRUE(CreatePipeWriter(&writer, &read_pipe));
EXPECT_TRUE(writer->IsConnected());
}
TEST_F(PipeWriterPosixTest, Close) {
std::unique_ptr<PipeWriterPosix> writer;
base::File read_pipe;
EXPECT_TRUE(CreatePipeWriter(&writer, &read_pipe));
EXPECT_TRUE(writer->IsConnected());
writer->Close();
EXPECT_FALSE(writer->IsConnected());
}
TEST_F(PipeWriterPosixTest, Write) {
std::unique_ptr<PipeWriterPosix> writer;
base::File read_pipe;
EXPECT_TRUE(CreatePipeWriter(&writer, &read_pipe));
EXPECT_TRUE(writer->IsConnected());
base::Thread::Options options;
options.message_pump_type = base::MessagePumpType::IO;
base::Thread thread("WriterThread");
ASSERT_TRUE(thread.StartWithOptions(std::move(options)));
std::pair<std::string, int> received;
base::RunLoop run_loop;
std::string sent_message = "Hello, pipes!";
writer->DetachFromThread();
int written = 0;
auto callback =
base::BindOnce([](int* written, int result) { *written = result; },
base::Unretained(&written))
.Then(run_loop.QuitClosure());
WriteAll(thread.task_runner(), std::move(writer), sent_message,
std::move(callback));
auto [received_message, code] = ReadAll(std::move(read_pipe));
EXPECT_EQ(sent_message, received_message);
EXPECT_EQ(0, code);
run_loop.Run();
const int expected_message_size = static_cast<int>(sent_message.size());
EXPECT_EQ(expected_message_size, written);
}
TEST_F(PipeWriterPosixTest, WriteToClosed) {
base::RunLoop run_loop;
std::unique_ptr<PipeWriterPosix> writer;
base::File read_pipe;
EXPECT_TRUE(CreatePipeWriter(&writer, &read_pipe));
read_pipe.Close();
EXPECT_TRUE(writer->IsConnected());
std::string message = "Hello, World!";
scoped_refptr<net::StringIOBuffer> buffer =
base::MakeRefCounted<net::StringIOBuffer>(message);
EXPECT_EQ(net::ERR_CONNECTION_RESET,
writer->Write(buffer.get(), buffer->size(),
base::BindOnce([](int rv) {})));
EXPECT_FALSE(writer->IsConnected());
}
TEST_F(PipeWriterPosixTest, WriteLarge) {
std::unique_ptr<PipeWriterPosix> writer;
base::File read_pipe;
EXPECT_TRUE(CreatePipeWriter(&writer, &read_pipe));
EXPECT_TRUE(writer->IsConnected());
base::Thread::Options options;
options.message_pump_type = base::MessagePumpType::IO;
base::Thread thread("WriterThread");
ASSERT_TRUE(thread.StartWithOptions(std::move(options)));
std::pair<std::string, int> received;
base::RunLoop run_loop;
std::string sent_message(1 << 20, 'a');
writer->DetachFromThread();
int written = 0;
auto callback =
base::BindOnce([](int* written, int result) { *written = result; },
base::Unretained(&written))
.Then(run_loop.QuitClosure());
WriteAll(thread.task_runner(), std::move(writer), sent_message,
std::move(callback));
auto [received_message, code] = ReadAll(std::move(read_pipe));
EXPECT_EQ(sent_message, received_message);
EXPECT_EQ(0, code);
run_loop.Run();
const int expected_message_size = static_cast<int>(sent_message.size());
EXPECT_EQ(expected_message_size, written);
}
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