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content / test / fuzzer / image_capture_mojolpm_fuzzer.cc [blame]
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include <cstddef>
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/raw_ptr.h"
#include "base/no_destructor.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/thread_pool/thread_pool_instance.h"
#include "base/test/scoped_command_line.h"
#include "content/browser/browser_main_loop.h" //nogncheck
#include "content/browser/image_capture/image_capture_impl.h" //nogncheck
#include "content/browser/site_instance_impl.h" //nogncheck
#include "content/public/browser/site_instance.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/main_function_params.h"
#include "content/public/test/mock_navigation_handle.h"
#include "content/public/test/test_browser_context.h"
#include "content/test/fuzzer/image_capture_mojolpm_fuzzer.pb.h"
#include "content/test/fuzzer/mojolpm_fuzzer_support.h"
#include "content/test/test_render_frame_host.h"
#include "content/test/test_web_contents.h"
#include "media/capture/mojom/image_capture.mojom-mojolpm.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "third_party/libprotobuf-mutator/src/src/libfuzzer/libfuzzer_macro.h"
const char* kCmdline[] = {"image_capture_mojolpm_fuzzer", nullptr};
content::mojolpm::FuzzerEnvironment& GetEnvironment() {
static base::NoDestructor<content::mojolpm::FuzzerEnvironment> environment(
1, kCmdline);
return *environment;
}
scoped_refptr<base::SequencedTaskRunner> GetFuzzerTaskRunner() {
return GetEnvironment().fuzzer_task_runner();
}
class ImageCaptureTestcase
: public mojolpm::Testcase<content::fuzzing::image_capture::proto::Testcase,
content::fuzzing::image_capture::proto::Action> {
public:
using ProtoTestcase = content::fuzzing::image_capture::proto::Testcase;
using ProtoAction = content::fuzzing::image_capture::proto::Action;
explicit ImageCaptureTestcase(const ProtoTestcase& testcase);
~ImageCaptureTestcase();
void SetUp(base::OnceClosure done_closure) override;
void TearDown(base::OnceClosure done_closure) override;
void RunAction(const ProtoAction& action,
base::OnceClosure run_closure) override;
private:
void SetUpOnUIThread(base::OnceClosure done_closure);
void SetUpOnIOThread(base::OnceClosure done_closure);
void TearDownOnUIThread(base::OnceClosure done_closure);
void TearDownOnIOThread(base::OnceClosure done_closure);
void AddImageCapture(uint32_t id, base::OnceClosure done_closure);
void AddImageCaptureImpl(
mojo::PendingReceiver<media::mojom::ImageCapture> receiver);
// Prerequisite state.
content::mojolpm::RenderViewHostTestHarnessAdapter test_adapter_;
raw_ptr<content::TestRenderFrameHost> render_frame_host_ = nullptr;
};
ImageCaptureTestcase::ImageCaptureTestcase(const ProtoTestcase& testcase)
: Testcase<ProtoTestcase, ProtoAction>(testcase) {
test_adapter_.SetUp();
base::test::ScopedCommandLine scoped_command_line;
content::MainFunctionParams main_function_params(
scoped_command_line.GetProcessCommandLine());
content::BrowserMainLoop browser_main_loop_(
std::move(main_function_params),
std::make_unique<base::ThreadPoolInstance::ScopedExecutionFence>());
browser_main_loop_.Init();
}
ImageCaptureTestcase::~ImageCaptureTestcase() {
test_adapter_.TearDown();
}
void ImageCaptureTestcase::RunAction(const ProtoAction& action,
base::OnceClosure run_closure) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
const auto ThreadId_UI =
content::fuzzing::image_capture::proto::RunThreadAction_ThreadId_UI;
const auto ThreadId_IO =
content::fuzzing::image_capture::proto::RunThreadAction_ThreadId_IO;
switch (action.action_case()) {
case ProtoAction::kRunThread:
// These actions ensure that any tasks currently queued on the named
// thread have chance to run before the fuzzer continues.
//
// We don't provide any particular guarantees here; this does not mean
// that the named thread is idle, nor does it prevent any other threads
// from running (or the consequences of any resulting callbacks, for
// example).
if (action.run_thread().id() == ThreadId_UI) {
content::GetUIThreadTaskRunner({})->PostTaskAndReply(
FROM_HERE, base::DoNothing(), std::move(run_closure));
} else if (action.run_thread().id() == ThreadId_IO) {
content::GetIOThreadTaskRunner({})->PostTaskAndReply(
FROM_HERE, base::DoNothing(), std::move(run_closure));
}
return;
case ProtoAction::kNewImageCapture:
AddImageCapture(action.new_image_capture().id(), std::move(run_closure));
return;
case ProtoAction::kImageCaptureRemoteAction:
mojolpm::HandleRemoteAction(action.image_capture_remote_action());
break;
case ProtoAction::ACTION_NOT_SET:
break;
}
GetFuzzerTaskRunner()->PostTask(FROM_HERE, std::move(run_closure));
}
void ImageCaptureTestcase::SetUp(base::OnceClosure done_closure) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
content::GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&ImageCaptureTestcase::SetUpOnIOThread,
base::Unretained(this), std::move(done_closure)));
}
void ImageCaptureTestcase::SetUpOnIOThread(base::OnceClosure done_closure) {
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&ImageCaptureTestcase::SetUpOnUIThread,
base::Unretained(this), std::move(done_closure)));
}
void ImageCaptureTestcase::SetUpOnUIThread(base::OnceClosure done_closure) {
render_frame_host_ =
static_cast<content::TestWebContents*>(test_adapter_.web_contents())
->GetPrimaryMainFrame();
render_frame_host_->InitializeRenderFrameIfNeeded();
GetFuzzerTaskRunner()->PostTask(FROM_HERE, std::move(done_closure));
}
void ImageCaptureTestcase::TearDown(base::OnceClosure done_closure) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&ImageCaptureTestcase::TearDownOnUIThread,
base::Unretained(this), std::move(done_closure)));
}
void ImageCaptureTestcase::TearDownOnUIThread(base::OnceClosure done_closure) {
content::GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&ImageCaptureTestcase::TearDownOnIOThread,
base::Unretained(this), std::move(done_closure)));
}
void ImageCaptureTestcase::TearDownOnIOThread(base::OnceClosure done_closure) {
GetFuzzerTaskRunner()->PostTask(FROM_HERE, std::move(done_closure));
}
void ImageCaptureTestcase::AddImageCaptureImpl(
mojo::PendingReceiver<media::mojom::ImageCapture> receiver) {
content::ImageCaptureImpl::Create(render_frame_host_, std::move(receiver));
}
static void AddImageCaptureInstance(
uint32_t id,
mojo::Remote<media::mojom::ImageCapture> remote,
base::OnceClosure run_closure) {
mojolpm::GetContext()->AddInstance(id, std::move(remote));
std::move(run_closure).Run();
}
void ImageCaptureTestcase::AddImageCapture(uint32_t id,
base::OnceClosure run_closure) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
mojo::Remote<media::mojom::ImageCapture> remote;
auto receiver = remote.BindNewPipeAndPassReceiver();
content::GetUIThreadTaskRunner({})->PostTaskAndReply(
FROM_HERE,
base::BindOnce(&ImageCaptureTestcase::AddImageCaptureImpl,
base::Unretained(this), std::move(receiver)),
base::BindOnce(AddImageCaptureInstance, id, std::move(remote),
std::move(run_closure)));
}
DEFINE_BINARY_PROTO_FUZZER(
const content::fuzzing::image_capture::proto::Testcase& proto_testcase) {
if (!proto_testcase.actions_size() || !proto_testcase.sequences_size() ||
!proto_testcase.sequence_indexes_size()) {
return;
}
GetEnvironment();
ImageCaptureTestcase testcase(proto_testcase);
base::RunLoop main_run_loop;
GetFuzzerTaskRunner()->PostTask(
FROM_HERE,
base::BindOnce(&mojolpm::RunTestcase<ImageCaptureTestcase>,
base::Unretained(&testcase), GetFuzzerTaskRunner(),
main_run_loop.QuitClosure()));
main_run_loop.Run();
}