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content / test / fuzzer / audio_context_manager_mojolpm_fuzzer.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 <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/test/simple_test_tick_clock.h"
#include "content/browser/media/webaudio/audio_context_manager_impl.h" // [nogncheck]
#include "content/browser/site_instance_impl.h" // nogncheck
#include "content/public/browser/audio_service.h"
#include "content/public/browser/site_instance.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_switches.h"
#include "content/public/test/mock_navigation_handle.h"
#include "content/public/test/test_browser_context.h"
#include "content/test/fuzzer/audio_context_manager_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 "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/blink/public/mojom/webaudio/audio_context_manager.mojom-mojolpm.h"
#include "third_party/blink/public/mojom/webaudio/audio_context_manager.mojom.h"
#include "third_party/libprotobuf-mutator/src/src/libfuzzer/libfuzzer_macro.h"
#include "url/origin.h"
const char* kCmdline[] = {"audio_context_manager_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 AudioContextManagerTestcase
: public mojolpm::Testcase<
content::fuzzing::audio_context_manager::proto::Testcase,
content::fuzzing::audio_context_manager::proto::Action> {
public:
using ProtoTestcase =
content::fuzzing::audio_context_manager::proto::Testcase;
using ProtoAction = content::fuzzing::audio_context_manager::proto::Action;
explicit AudioContextManagerTestcase(const ProtoTestcase& testcase);
~AudioContextManagerTestcase();
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 TearDownOnUIThread(base::OnceClosure done_closure);
void AddAudioContextManager(uint32_t id, base::OnceClosure done_closure);
void AddAudioContextManagerImpl(
mojo::PendingReceiver<blink::mojom::AudioContextManager> receiver);
// Prerequisite state.
content::mojolpm::RenderViewHostTestHarnessAdapter test_adapter_;
base::SimpleTestTickClock clock_;
raw_ptr<content::AudioContextManagerImpl> audio_context_manager_ = nullptr;
raw_ptr<content::TestRenderFrameHost> render_frame_host_ = nullptr;
};
AudioContextManagerTestcase::AudioContextManagerTestcase(
const ProtoTestcase& testcase)
: Testcase<ProtoTestcase, ProtoAction>(testcase) {
test_adapter_.SetUp();
}
AudioContextManagerTestcase::~AudioContextManagerTestcase() {
test_adapter_.TearDown();
}
void AudioContextManagerTestcase::RunAction(const ProtoAction& action,
base::OnceClosure run_closure) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
const auto ThreadId_UI = content::fuzzing::audio_context_manager::proto::
RunThreadAction_ThreadId_UI;
const auto ThreadId_IO = content::fuzzing::audio_context_manager::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::kNewAudioContextManager:
AddAudioContextManager(action.new_audio_context_manager().id(),
std::move(run_closure));
return;
// TODO(bookholt): add support for playback start/stop
case ProtoAction::kAudioContextManagerRemoteAction:
mojolpm::HandleRemoteAction(action.audio_context_manager_remote_action());
break;
case ProtoAction::ACTION_NOT_SET:
break;
}
GetFuzzerTaskRunner()->PostTask(FROM_HERE, std::move(run_closure));
}
void AudioContextManagerTestcase::SetUp(base::OnceClosure done_closure) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&AudioContextManagerTestcase::SetUpOnUIThread,
base::Unretained(this), std::move(done_closure)));
}
void AudioContextManagerTestcase::SetUpOnUIThread(
base::OnceClosure done_closure) {
// content::CreateAudioSystemForAudioService();
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 AudioContextManagerTestcase::TearDown(base::OnceClosure done_closure) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&AudioContextManagerTestcase::TearDownOnUIThread,
base::Unretained(this), std::move(done_closure)));
}
void AudioContextManagerTestcase::TearDownOnUIThread(
base::OnceClosure done_closure) {
// audio_context_manager_.reset();
GetFuzzerTaskRunner()->PostTask(FROM_HERE, std::move(done_closure));
}
void AudioContextManagerTestcase::AddAudioContextManagerImpl(
mojo::PendingReceiver<blink::mojom::AudioContextManager> receiver) {
clock_.SetNowTicks(base::TimeTicks::Now());
audio_context_manager_ = &content::AudioContextManagerImpl::CreateForTesting(
*render_frame_host_, std::move(receiver));
audio_context_manager_->set_clock_for_testing(&clock_);
}
static void AddAudioContextManagerInstance(
uint32_t id,
mojo::Remote<blink::mojom::AudioContextManager> remote,
base::OnceClosure run_closure) {
mojolpm::GetContext()->AddInstance(id, std::move(remote));
std::move(run_closure).Run();
}
// Component(s) which we fuzz
void AudioContextManagerTestcase::AddAudioContextManager(
uint32_t id,
base::OnceClosure run_closure) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
mojo::Remote<blink::mojom::AudioContextManager> remote;
auto receiver = remote.BindNewPipeAndPassReceiver();
content::GetUIThreadTaskRunner({})->PostTaskAndReply(
FROM_HERE,
base::BindOnce(&AudioContextManagerTestcase::AddAudioContextManagerImpl,
base::Unretained(this), std::move(receiver)),
base::BindOnce(AddAudioContextManagerInstance, id, std::move(remote),
std::move(run_closure)));
}
DEFINE_BINARY_PROTO_FUZZER(
const content::fuzzing::audio_context_manager::proto::Testcase&
proto_testcase) {
// bail out early if no work to do
if (!proto_testcase.actions_size() || !proto_testcase.sequences_size() ||
!proto_testcase.sequence_indexes_size()) {
return;
}
// Make sure that the environment is initialized before we do anything else.
GetEnvironment();
AudioContextManagerTestcase testcase(proto_testcase);
base::RunLoop main_run_loop;
// Unretained is safe here, because `main_run_loop` has to finish before
// testcase goes out of scope.
GetFuzzerTaskRunner()->PostTask(
FROM_HERE,
base::BindOnce(&mojolpm::RunTestcase<AudioContextManagerTestcase>,
base::Unretained(&testcase), GetFuzzerTaskRunner(),
main_run_loop.QuitClosure()));
main_run_loop.Run();
}