content/renderer/loader/navigation_body_loader_unittest.cc

// Copyright 2019 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 "content/renderer/loader/navigation_body_loader.h"

#include "base/bind.h"
#include "base/macros.h"
#include "base/run_loop.h"
#include "base/single_thread_task_runner.h"
#include "base/test/task_environment.h"
#include "content/common/navigation_params.mojom.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "net/cert/x509_util.h"
#include "net/ssl/ssl_connection_status_flags.h"
#include "net/test/cert_test_util.h"
#include "services/network/public/cpp/url_loader_completion_status.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/platform/scheduler/test/renderer_scheduler_test_support.h"
#include "third_party/blink/public/platform/web_navigation_body_loader.h"
#include "third_party/blink/public/web/web_navigation_params.h"

namespace content {

namespace {

class NavigationBodyLoaderTest : public ::testing::Test,
                                 public blink::WebNavigationBodyLoader::Client {
 protected:
  NavigationBodyLoaderTest() {}

  ~NavigationBodyLoaderTest() override { base::RunLoop().RunUntilIdle(); }

  MojoCreateDataPipeOptions CreateDataPipeOptions() {
    MojoCreateDataPipeOptions options;
    options.struct_size = sizeof(MojoCreateDataPipeOptions);
    options.flags = MOJO_CREATE_DATA_PIPE_FLAG_NONE;
    options.element_num_bytes = 1;
    options.capacity_num_bytes = 1024;
    return options;
  }

  void CreateBodyLoader() {
    mojo::ScopedDataPipeProducerHandle producer_handle;
    mojo::ScopedDataPipeConsumerHandle consumer_handle;
    MojoCreateDataPipeOptions options = CreateDataPipeOptions();
    ASSERT_EQ(mojo::CreateDataPipe(&options, producer_handle, consumer_handle),
              MOJO_RESULT_OK);

    writer_ = std::move(producer_handle);
    auto endpoints = network::mojom::URLLoaderClientEndpoints::New();
    endpoints->url_loader_client = client_remote_.BindNewPipeAndPassReceiver();
    blink::WebNavigationParams navigation_params;
    navigation_params.sandbox_flags = network::mojom::WebSandboxFlags::kNone;
    auto common_params = CreateCommonNavigationParams();
    auto commit_params = CreateCommitNavigationParams();
    NavigationBodyLoader::FillNavigationParamsResponseAndBodyLoader(
        std::move(common_params), std::move(commit_params), /*request_id=*/1,
        network::mojom::URLResponseHead::New(), std::move(consumer_handle),
        std::move(endpoints),
        blink::scheduler::GetSingleThreadTaskRunnerForTesting(),
        /*render_frame_impl=*/nullptr, /*is_main_frame=*/true,
        &navigation_params);
    loader_ = std::move(navigation_params.body_loader);
  }

  void StartLoading() {
    loader_->StartLoadingBody(this, nullptr /*code_cache_host*/);
    base::RunLoop().RunUntilIdle();
  }

  void Write(const std::string& buffer) {
    uint32_t size = buffer.size();
    MojoResult result = writer_->WriteData(buffer.c_str(), &size, kNone);
    ASSERT_EQ(MOJO_RESULT_OK, result);
    ASSERT_EQ(buffer.size(), size);
  }

  void Complete(int net_error) {
    client_remote_->OnComplete(network::URLLoaderCompletionStatus(net_error));
    base::RunLoop().RunUntilIdle();
  }

  void BodyCodeCacheReceived(mojo_base::BigBuffer data) override {}

  void BodyDataReceived(base::span<const char> data) override {
    ASSERT_TRUE(expecting_data_received_);
    did_receive_data_ = true;
    data_received_ += std::string(data.data(), data.size());
    TakeActions();
    if (run_loop_.running())
      run_loop_.Quit();
  }

  void BodyLoadingFinished(
      base::TimeTicks completion_time,
      int64_t total_encoded_data_length,
      int64_t total_encoded_body_length,
      int64_t total_decoded_body_length,
      bool should_report_corb_blocking,
      const absl::optional<blink::WebURLError>& error) override {
    ASSERT_TRUE(expecting_finished_);
    did_finish_ = true;
    error_ = error;
    TakeActions();
    if (run_loop_.running())
      run_loop_.Quit();
  }

  void TakeActions() {
    if (!buffer_to_write_.empty()) {
      std::string buffer = buffer_to_write_;
      buffer_to_write_ = std::string();
      ExpectDataReceived();
      Write(buffer);
    }
    if (toggle_defers_loading_) {
      toggle_defers_loading_ = false;
      loader_->SetDefersLoading(blink::WebLoaderFreezeMode::kNone);
      loader_->SetDefersLoading(blink::WebLoaderFreezeMode::kStrict);
    }
    if (destroy_loader_) {
      destroy_loader_ = false;
      loader_.reset();
    }
  }

  void ExpectDataReceived() {
    expecting_data_received_ = true;
    did_receive_data_ = false;
  }

  void ExpectFinished() {
    expecting_finished_ = true;
    did_finish_ = false;
  }

  std::string TakeDataReceived() {
    std::string data = data_received_;
    data_received_ = std::string();
    return data;
  }

  void Wait() {
    if (expecting_data_received_) {
      if (!did_receive_data_)
        run_loop_.Run();
      ASSERT_TRUE(did_receive_data_);
      expecting_data_received_ = false;
    }
    if (expecting_finished_) {
      if (!did_finish_)
        run_loop_.Run();
      ASSERT_TRUE(did_finish_);
      expecting_finished_ = false;
    }
  }

  base::test::TaskEnvironment task_environment_;
  static const MojoWriteDataFlags kNone = MOJO_WRITE_DATA_FLAG_NONE;
  mojo::Remote<network::mojom::URLLoaderClient> client_remote_;
  std::unique_ptr<blink::WebNavigationBodyLoader> loader_;
  mojo::ScopedDataPipeProducerHandle writer_;

  base::RunLoop run_loop_;
  bool expecting_data_received_ = false;
  bool did_receive_data_ = false;
  bool expecting_finished_ = false;
  bool did_finish_ = false;
  std::string buffer_to_write_;
  bool toggle_defers_loading_ = false;
  bool destroy_loader_ = false;
  std::string data_received_;
  absl::optional<blink::WebURLError> error_;
};

TEST_F(NavigationBodyLoaderTest, SetDefersBeforeStart) {
  CreateBodyLoader();
  loader_->SetDefersLoading(blink::WebLoaderFreezeMode::kStrict);
  loader_->SetDefersLoading(blink::WebLoaderFreezeMode::kNone);
  // Should not crash.
}

TEST_F(NavigationBodyLoaderTest, DataReceived) {
  CreateBodyLoader();
  StartLoading();
  ExpectDataReceived();
  Write("hello");
  Wait();
  EXPECT_EQ("hello", TakeDataReceived());
}

TEST_F(NavigationBodyLoaderTest, DataReceivedFromDataReceived) {
  CreateBodyLoader();
  StartLoading();
  ExpectDataReceived();
  buffer_to_write_ = "world";
  Write("hello");
  Wait();
  EXPECT_EQ("helloworld", TakeDataReceived());
}

TEST_F(NavigationBodyLoaderTest, DestroyFromDataReceived) {
  CreateBodyLoader();
  StartLoading();
  ExpectDataReceived();
  destroy_loader_ = false;
  Write("hello");
  Wait();
  EXPECT_EQ("hello", TakeDataReceived());
}

TEST_F(NavigationBodyLoaderTest, SetDefersLoadingFromDataReceived) {
  CreateBodyLoader();
  StartLoading();
  ExpectDataReceived();
  toggle_defers_loading_ = true;
  Write("hello");
  Wait();
  EXPECT_EQ("hello", TakeDataReceived());
}

TEST_F(NavigationBodyLoaderTest, StartDeferred) {
  CreateBodyLoader();
  loader_->SetDefersLoading(blink::WebLoaderFreezeMode::kStrict);
  StartLoading();
  Write("hello");
  ExpectDataReceived();
  loader_->SetDefersLoading(blink::WebLoaderFreezeMode::kNone);
  Wait();
  EXPECT_EQ("hello", TakeDataReceived());
}

TEST_F(NavigationBodyLoaderTest, StartDeferredWithBackForwardCache) {
  CreateBodyLoader();
  loader_->SetDefersLoading(blink::WebLoaderFreezeMode::kBufferIncoming);
  StartLoading();
  Write("hello");
  ExpectDataReceived();
  loader_->SetDefersLoading(blink::WebLoaderFreezeMode::kNone);
  Wait();
  EXPECT_EQ("hello", TakeDataReceived());
}

TEST_F(NavigationBodyLoaderTest, OnCompleteThenClose) {
  CreateBodyLoader();
  StartLoading();
  Complete(net::ERR_FAILED);
  ExpectFinished();
  writer_.reset();
  Wait();
  EXPECT_TRUE(error_.has_value());
}

TEST_F(NavigationBodyLoaderTest, DestroyFromOnCompleteThenClose) {
  CreateBodyLoader();
  StartLoading();
  Complete(net::ERR_FAILED);
  ExpectFinished();
  destroy_loader_ = true;
  writer_.reset();
  Wait();
  EXPECT_TRUE(error_.has_value());
}

TEST_F(NavigationBodyLoaderTest, SetDefersLoadingFromOnCompleteThenClose) {
  CreateBodyLoader();
  StartLoading();
  Complete(net::ERR_FAILED);
  ExpectFinished();
  toggle_defers_loading_ = true;
  writer_.reset();
  Wait();
  EXPECT_TRUE(error_.has_value());
}

TEST_F(NavigationBodyLoaderTest, CloseThenOnComplete) {
  CreateBodyLoader();
  StartLoading();
  writer_.reset();
  ExpectFinished();
  Complete(net::ERR_FAILED);
  Wait();
  EXPECT_TRUE(error_.has_value());
}

TEST_F(NavigationBodyLoaderTest, DestroyFromCloseThenOnComplete) {
  CreateBodyLoader();
  StartLoading();
  writer_.reset();
  ExpectFinished();
  destroy_loader_ = true;
  Complete(net::ERR_FAILED);
  Wait();
  EXPECT_TRUE(error_.has_value());
}

TEST_F(NavigationBodyLoaderTest, SetDefersLoadingFromCloseThenOnComplete) {
  CreateBodyLoader();
  StartLoading();
  writer_.reset();
  ExpectFinished();
  toggle_defers_loading_ = true;
  Complete(net::ERR_FAILED);
  Wait();
  EXPECT_TRUE(error_.has_value());
}

// Tests that FillNavigationParamsResponseAndBodyLoader populates security
// details on the response when they are present.
TEST_F(NavigationBodyLoaderTest, FillResponseWithSecurityDetails) {
  auto response = network::mojom::URLResponseHead::New();
  response->ssl_info = net::SSLInfo();
  net::CertificateList certs;
  ASSERT_TRUE(net::LoadCertificateFiles(
      {"subjectAltName_sanity_check.pem", "root_ca_cert.pem"}, &certs));
  ASSERT_EQ(2U, certs.size());

  base::StringPiece cert0_der =
      net::x509_util::CryptoBufferAsStringPiece(certs[0]->cert_buffer());
  base::StringPiece cert1_der =
      net::x509_util::CryptoBufferAsStringPiece(certs[1]->cert_buffer());

  response->ssl_info->cert =
      net::X509Certificate::CreateFromDERCertChain({cert0_der, cert1_der});
  net::SSLConnectionStatusSetVersion(net::SSL_CONNECTION_VERSION_TLS1_2,
                                     &response->ssl_info->connection_status);

  auto common_params = CreateCommonNavigationParams();
  common_params->url = GURL("https://example.test");
  auto commit_params = CreateCommitNavigationParams();

  blink::WebNavigationParams navigation_params;
  navigation_params.sandbox_flags = network::mojom::WebSandboxFlags::kNone;
  auto endpoints = network::mojom::URLLoaderClientEndpoints::New();
  mojo::ScopedDataPipeProducerHandle producer_handle;
  mojo::ScopedDataPipeConsumerHandle consumer_handle;
  MojoResult rv =
      mojo::CreateDataPipe(nullptr, producer_handle, consumer_handle);
  ASSERT_EQ(MOJO_RESULT_OK, rv);
  NavigationBodyLoader::FillNavigationParamsResponseAndBodyLoader(
      std::move(common_params), std::move(commit_params), /*request_id=*/1,
      std::move(response), std::move(consumer_handle), std::move(endpoints),
      blink::scheduler::GetSingleThreadTaskRunnerForTesting(),
      /*render_frame_impl=*/nullptr, /*is_main_frame=*/true,
      &navigation_params);
  EXPECT_TRUE(
      navigation_params.response.SecurityDetailsForTesting().has_value());
}

}  // namespace

}  // namespace content