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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This fuzzer tests browser-side implementation of
// ozone::mojom::WaylandConnection.
#include <drm_fourcc.h>
#include <fuzzer/FuzzedDataProvider.h>
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <vector>
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/message_loop/message_pump_type.h"
#include "base/no_destructor.h"
#include "base/task/single_thread_task_executor.h"
#include "base/test/bind.h"
#include "base/test/icu_test_util.h"
#include "base/test/mock_callback.h"
#include "base/test/task_environment.h"
#include "base/test/test_timeouts.h"
#include "mojo/core/embedder/embedder.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/ozone/platform/wayland/host/wayland_buffer_manager_host.h"
#include "ui/ozone/platform/wayland/host/wayland_connection.h"
#include "ui/ozone/platform/wayland/host/wayland_event_source.h"
#include "ui/ozone/platform/wayland/host/wayland_output_manager.h"
#include "ui/ozone/platform/wayland/host/wayland_window.h"
#include "ui/ozone/platform/wayland/test/test_wayland_server_thread.h"
#include "ui/ozone/platform/wayland/test/test_zwp_linux_buffer_params.h"
#include "ui/ozone/platform/wayland/test/wayland_connection_test_api.h"
#include "ui/platform_window/platform_window_delegate.h"
#include "ui/platform_window/platform_window_init_properties.h"
using testing::_;
namespace {
using TerminateGpuCallback = base::OnceCallback<void(std::string)>;
// Copied from ui/ozone/test/mock_platform_window_delegate.h to avoid
// dependency from the whole library (it causes link problems).
class MockPlatformWindowDelegate : public ui::PlatformWindowDelegate {
public:
MockPlatformWindowDelegate() = default;
MockPlatformWindowDelegate(const MockPlatformWindowDelegate&) = delete;
MockPlatformWindowDelegate& operator=(const MockPlatformWindowDelegate&) =
delete;
~MockPlatformWindowDelegate() override = default;
MOCK_METHOD1(OnBoundsChanged, void(const BoundsChange& change));
MOCK_METHOD1(OnDamageRect, void(const gfx::Rect& damaged_region));
MOCK_METHOD1(DispatchEvent, void(ui::Event* event));
MOCK_METHOD0(OnCloseRequest, void());
MOCK_METHOD0(OnClosed, void());
MOCK_METHOD2(OnWindowStateChanged,
void(ui::PlatformWindowState old_state,
ui::PlatformWindowState new_state));
MOCK_METHOD0(OnLostCapture, void());
MOCK_METHOD1(OnAcceleratedWidgetAvailable,
void(gfx::AcceleratedWidget widget));
MOCK_METHOD0(OnWillDestroyAcceleratedWidget, void());
MOCK_METHOD0(OnAcceleratedWidgetDestroyed, void());
MOCK_METHOD1(OnActivationChanged, void(bool active));
MOCK_METHOD0(OnMouseEnter, void());
};
struct Environment {
Environment()
: task_environment((base::CommandLine::Init(0, nullptr),
TestTimeouts::Initialize(),
base::test::TaskEnvironment::MainThreadType::UI)) {
logging::SetMinLogLevel(logging::LOGGING_FATAL);
mojo::core::Init();
}
void SetTerminateGpuCallback(ui::WaylandBufferManagerHost* host) {
DCHECK(host);
host->SetTerminateGpuCallback(base::BindOnce(
&Environment::OnTerminateCallbackFired, base::Unretained(this)));
}
void OnTerminateCallbackFired(std::string message) { terminated = true; }
base::test::TaskEnvironment task_environment;
bool terminated = false;
};
} // namespace
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
static Environment env;
DCHECK(!env.terminated);
// Required for ICU initialization.
static base::NoDestructor<base::AtExitManager> exit_manager;
FuzzedDataProvider data_provider(data, size);
base::CommandLine::Init(0, nullptr);
// Required for base::FormatNumber that WaylandBufferManagerHost uses.
base::test::InitializeICUForTesting();
std::vector<uint32_t> known_fourccs{
DRM_FORMAT_R8, DRM_FORMAT_GR88, DRM_FORMAT_ABGR8888,
DRM_FORMAT_XBGR8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888,
DRM_FORMAT_XRGB2101010, DRM_FORMAT_XBGR2101010, DRM_FORMAT_RGB565,
DRM_FORMAT_NV12, DRM_FORMAT_YVU420};
wl::TestWaylandServerThread server;
CHECK(server.Start());
std::unique_ptr<ui::WaylandConnection> connection =
std::make_unique<ui::WaylandConnection>();
CHECK(connection->Initialize());
// Wait until everything is initialised.
env.task_environment.RunUntilIdle();
auto screen = connection->wayland_output_manager()->CreateWaylandScreen();
connection->wayland_output_manager()->InitWaylandScreen(screen.get());
MockPlatformWindowDelegate delegate;
gfx::AcceleratedWidget widget = gfx::kNullAcceleratedWidget;
EXPECT_CALL(delegate, OnAcceleratedWidgetAvailable(_))
.WillOnce(testing::SaveArg<0>(&widget));
ui::PlatformWindowInitProperties properties;
properties.bounds = gfx::Rect(0, 0, 800, 600);
properties.type = ui::PlatformWindowType::kWindow;
std::unique_ptr<ui::WaylandWindow> window = ui::WaylandWindow::Create(
&delegate, connection.get(), std::move(properties));
CHECK_NE(widget, gfx::kNullAcceleratedWidget);
// Let the server process the events and wait until everything is initialised.
ui::WaylandConnectionTestApi test_api(connection.get());
test_api.SyncDisplay();
base::FilePath temp_dir, temp_path;
base::ScopedFD fd =
base::CreateAndOpenFdForTemporaryFileInDir(temp_dir, &temp_path);
EXPECT_TRUE(fd.is_valid());
// 10K screens are reality these days.
const gfx::Size buffer_size(data_provider.ConsumeIntegralInRange(1U, 20000U),
data_provider.ConsumeIntegralInRange(1U, 20000U));
// The buffer manager opens a file descriptor for each plane so |plane_count|
// cannot be really large. Technically, the maximum is |ulimit| minus number
// of file descriptors opened by this process already (which is 17 at the time
// of writing) but there is little sense in having more than a few planes in a
// real system so here is a hard limit of 500.
const uint32_t kPlaneCount = data_provider.ConsumeIntegralInRange(1U, 500U);
const uint32_t kFormat = known_fourccs[data_provider.ConsumeIntegralInRange(
0UL, static_cast<unsigned long>(known_fourccs.size() - 1))];
std::vector<uint32_t> strides(kPlaneCount);
std::vector<uint32_t> offsets(kPlaneCount);
std::vector<uint64_t> modifiers(kPlaneCount);
for (uint32_t i = 0; i < kPlaneCount; ++i) {
strides[i] = data_provider.ConsumeIntegralInRange(1U, UINT_MAX);
offsets[i] = data_provider.ConsumeIntegralInRange(0U, UINT_MAX);
modifiers[i] =
data_provider.ConsumeIntegralInRange(uint64_t(0), UINT64_MAX);
if (kPlaneCount > 1 && modifiers[i] == DRM_FORMAT_MOD_INVALID)
modifiers[i] = 0;
}
const uint32_t kBufferId = 1;
auto* manager_host = connection->buffer_manager_host();
env.SetTerminateGpuCallback(manager_host);
manager_host->CreateDmabufBasedBuffer(
mojo::PlatformHandle(std::move(fd)), buffer_size, strides, offsets,
modifiers, kFormat, kPlaneCount, kBufferId);
// Wait until the buffers are created.
test_api.SyncDisplay();
if (!env.terminated) {
server.RunAndWait(
base::BindLambdaForTesting([](wl::TestWaylandServerThread* server) {
// The server must notify the buffers are created so that the client
// is able to free the resources (destroy the params).
auto params_vector = server->zwp_linux_dmabuf_v1()->buffer_params();
// To ensure, no other buffers are created, test the size of the
// vector.
for (wl::TestZwpLinuxBufferParamsV1* mock_params : params_vector) {
zwp_linux_buffer_params_v1_send_created(
mock_params->resource(), mock_params->buffer_resource());
}
}));
test_api.SyncDisplay();
} else {
// If the |manager_host| fires the terminate gpu callback, we need to set
// the callback again.
env.SetTerminateGpuCallback(manager_host);
}
manager_host->DestroyBuffer(kBufferId);
// Wait until the buffers are destroyed.
test_api.SyncDisplay();
// Reset the value as |env| is a static object.
env.terminated = false;
return 0;
}
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