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content / browser / webui / web_ui_url_loader_factory_unittest.cc [blame]
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/public/browser/web_ui_url_loader_factory.h"
#include <optional>
#include "base/memory/ref_counted_memory.h"
#include "base/notreached.h"
#include "base/strings/strcat.h"
#include "base/strings/stringprintf.h"
#include "build/build_config.h"
#include "content/browser/webui/url_data_manager.h"
#include "content/public/browser/url_data_source.h"
#include "content/public/common/url_constants.h"
#include "content/public/test/test_browser_context.h"
#include "content/public/test/test_renderer_host.h"
#include "mojo/public/c/system/data_pipe.h"
#include "mojo/public/c/system/types.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/mojom/url_loader.mojom.h"
#include "services/network/public/mojom/url_loader_factory.mojom.h"
#include "services/network/test/test_url_loader_client.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content {
namespace {
const char* kTestWebUIScheme = kChromeUIScheme;
constexpr char kTestWebUIHost[] = "testhost";
constexpr size_t kMaxTestResourceSize = 10;
// A URLDataSource that always returns the byte sequence:
// {0, 1, 2, ..., resource_size - 1}.
class TestWebUIDataSource final : public URLDataSource {
public:
static std::vector<unsigned char> GetResource(size_t size) {
std::vector<unsigned char> resource(size);
for (size_t i = 0; i < resource.size(); ++i)
resource[i] = i;
return resource;
}
explicit TestWebUIDataSource(size_t resource_size)
: resource_size_(resource_size) {}
// URLDataSource implementation:
std::string GetSource() override { return kTestWebUIHost; }
void StartDataRequest(
const GURL& /*url*/,
const content::WebContents::Getter& /*wc_getter*/,
content::URLDataSource::GotDataCallback callback) override {
std::move(callback).Run(base::MakeRefCounted<base::RefCountedBytes>(
GetResource(resource_size_)));
}
std::string GetMimeType(const GURL& url) override { return "video/webm"; }
private:
const size_t resource_size_;
};
class OversizedWebUIDataSource final : public URLDataSource {
public:
explicit OversizedWebUIDataSource(size_t resource_size)
: resource_size_(resource_size) {}
// URLDataSource implementation:
std::string GetSource() override { return kTestWebUIHost; }
void StartDataRequest(
const GURL& /*url*/,
const content::WebContents::Getter& /*wc_getter*/,
content::URLDataSource::GotDataCallback callback) override {
auto resource =
base::MakeRefCounted<OversizedRefCountedMemory>(resource_size_);
std::move(callback).Run(std::move(resource));
}
std::string GetMimeType(const GURL& url) override { return "video/webm"; }
private:
// An implementation of RefCountedMemory representing a very large "virtual"
// buffer that is never actually allocated.
class OversizedRefCountedMemory final : public base::RefCountedMemory {
public:
explicit OversizedRefCountedMemory(size_t size) : size_(size) {}
OversizedRefCountedMemory(const OversizedRefCountedMemory&) = delete;
OversizedRefCountedMemory& operator=(const OversizedRefCountedMemory&) =
delete;
// base::RefCountedMemory implementation:
base::span<const uint8_t> AsSpan() const override {
// This uses `reinterpret_cast` of `1` to avoid nullness `CHECK` in the
// constructor of `span`.
//
// SAFETY: This is unsound, but any use of the pointer will crash as the
// first page is not mapped. The test does not actually use the pointer.
return UNSAFE_BUFFERS(base::span<const uint8_t>(
reinterpret_cast<const uint8_t*>(1), size_));
}
private:
~OversizedRefCountedMemory() override = default;
const size_t size_;
};
const size_t resource_size_;
};
} // namespace
const struct RangeRequestTestData {
size_t resource_size = 0;
std::optional<int> first_byte_position;
std::optional<int> last_byte_position;
int expected_error_code = net::OK;
uint32_t expected_size = 0;
} kRangeRequestTestData[] = {
// No range.
{kMaxTestResourceSize, std::nullopt, std::nullopt, net::OK,
kMaxTestResourceSize},
// No range, 0-size resource.
{0, std::nullopt, std::nullopt, net::OK, 0},
{kMaxTestResourceSize, 3, std::nullopt, net::OK, kMaxTestResourceSize - 3},
{kMaxTestResourceSize, 1, 1, net::OK, 1},
// Range too large by 1, truncated to resource size.
{kMaxTestResourceSize, 0, kMaxTestResourceSize, net::OK,
kMaxTestResourceSize},
// Range starts after the last resource byte.
{kMaxTestResourceSize, kMaxTestResourceSize, kMaxTestResourceSize + 5,
net::ERR_REQUEST_RANGE_NOT_SATISFIABLE, 0},
// Invalid range.
{kMaxTestResourceSize, 2, 1, net::ERR_REQUEST_RANGE_NOT_SATISFIABLE, 0},
#if defined(ARCH_CPU_64_BITS)
// Resource too large.
{static_cast<size_t>(std::numeric_limits<uint32_t>::max()) + 1,
std::nullopt, std::nullopt, net::ERR_INSUFFICIENT_RESOURCES, 0},
#endif // defined(ARCH_CPU_64_BITS)
};
class WebUIURLLoaderFactoryTest
: public RenderViewHostTestHarness,
public testing::WithParamInterface<RangeRequestTestData> {
public:
void SetUp() override {
RenderViewHostTestHarness::SetUp();
const auto resource_size = GetParam().resource_size;
std::unique_ptr<URLDataSource> data_source;
if (resource_size <= kMaxTestResourceSize)
data_source = std::make_unique<TestWebUIDataSource>(resource_size);
else
data_source = std::make_unique<OversizedWebUIDataSource>(resource_size);
URLDataManager::AddDataSource(browser_context(), std::move(data_source));
}
};
INSTANTIATE_TEST_SUITE_P(,
WebUIURLLoaderFactoryTest,
testing::ValuesIn(kRangeRequestTestData));
TEST_P(WebUIURLLoaderFactoryTest, RangeRequest) {
mojo::Remote<network::mojom::URLLoaderFactory> loader_factory(
CreateWebUIURLLoaderFactory(main_rfh(), kTestWebUIScheme,
/*allowed_hosts=*/{}));
network::ResourceRequest request;
request.url = GURL(base::StrCat({kTestWebUIScheme, "://", kTestWebUIHost}));
if (GetParam().first_byte_position) {
const std::string range_value =
GetParam().last_byte_position
? base::StringPrintf("bytes=%d-%d", *GetParam().first_byte_position,
*GetParam().last_byte_position)
: base::StringPrintf("bytes=%d-", *GetParam().first_byte_position);
request.headers.SetHeader(net::HttpRequestHeaders::kRange, range_value);
}
mojo::PendingRemote<network::mojom::URLLoader> loader;
network::TestURLLoaderClient loader_client;
loader_factory->CreateLoaderAndStart(
loader.InitWithNewPipeAndPassReceiver(), /*request_id=*/0,
/*options=*/0, request, loader_client.CreateRemote(),
net::MutableNetworkTrafficAnnotationTag(TRAFFIC_ANNOTATION_FOR_TESTS));
loader_client.RunUntilComplete();
EXPECT_EQ(loader_client.completion_status().error_code,
GetParam().expected_error_code);
if (loader_client.completion_status().error_code == net::OK) {
ASSERT_TRUE(loader_client.response_body().is_valid());
size_t response_size;
ASSERT_EQ(
loader_client.response_body().ReadData(
MOJO_READ_DATA_FLAG_QUERY, base::span<uint8_t>(), response_size),
MOJO_RESULT_OK);
ASSERT_EQ(response_size, GetParam().expected_size);
if (response_size > 0u) {
std::vector<uint8_t> response(response_size);
ASSERT_EQ(loader_client.response_body().ReadData(
MOJO_READ_DATA_FLAG_ALL_OR_NONE, response, response_size),
MOJO_RESULT_OK);
std::vector<unsigned char> expected_resource =
TestWebUIDataSource::GetResource(GetParam().resource_size);
expected_resource.erase(expected_resource.begin(),
expected_resource.begin() +
GetParam().first_byte_position.value_or(0));
expected_resource.resize(GetParam().expected_size);
EXPECT_EQ(response, expected_resource);
}
}
}
TEST(WebUIURLLoaderFactoryErrorHandlingTest, HandlesDestroyedContext) {
content::BrowserTaskEnvironment task_environment;
auto test_context = std::make_unique<TestBrowserContext>();
mojo::Remote<network::mojom::URLLoaderFactory> loader_factory(
CreateWebUIServiceWorkerLoaderFactory(test_context.get(),
kTestWebUIScheme, {}));
// Destroy the context before sending a request.
test_context.reset();
network::ResourceRequest request;
request.url = GURL(base::StrCat({kTestWebUIScheme, "://", kTestWebUIHost}));
mojo::PendingRemote<network::mojom::URLLoader> loader;
network::TestURLLoaderClient loader_client;
loader_factory->CreateLoaderAndStart(
loader.InitWithNewPipeAndPassReceiver(), /*request_id=*/0,
/*options=*/0, request, loader_client.CreateRemote(),
net::MutableNetworkTrafficAnnotationTag(TRAFFIC_ANNOTATION_FOR_TESTS));
loader_client.RunUntilComplete();
ASSERT_EQ(loader_client.completion_status().error_code, net::ERR_FAILED);
}
} // namespace content