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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
{%- set header_guard = "%s_"|format(
filename|upper|replace("/","_")|replace(".","_")|
replace("-", "_")) %}
#ifndef {{header_guard}}
#define {{header_guard}}
#include "{{mojolpm_generator_filepath}}"
#include "base/functional/bind.h"
#include "mojo/public/tools/fuzzers/mojolpm.h"
#include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
class RendererTestcase
: public {{mojolpm_generator_classname}} {
public:
explicit RendererTestcase(
std::unique_ptr<ProtoTestcase> testcase,
const blink::BrowserInterfaceBrokerProxy* context_interface_broker_proxy,
blink::ThreadSafeBrowserInterfaceBrokerProxy*
process_interface_broker_proxy,
blink::AssociatedInterfaceProvider* associated_interface_provider);
~RendererTestcase() override;
scoped_refptr<base::SequencedTaskRunner> GetFuzzerTaskRunner() override;
void SetUp(base::OnceClosure done_closure) override;
void TearDown(base::OnceClosure done_closure) override;
{% for interface in context_interfaces %}
void HandleNew{{interface.identifier}}Action(
uint32_t id,
base::OnceClosure done_closure) override;
{% endfor %}
{% for interface in process_interfaces %}
void HandleNew{{interface.identifier}}Action(
uint32_t id,
base::OnceClosure done_closure) override;
{% endfor %}
{% for interface in associated_interfaces %}
void HandleNew{{interface.identifier}}Action(
uint32_t id,
base::OnceClosure done_closure) override;
{% endfor %}
private:
void SetUpOnFuzzerThread(base::OnceClosure done_closure);
void TearDownOnFuzzerThread(base::OnceClosure done_closure);
template <typename T>
void NewProcessInterface(uint32_t id, base::OnceClosure done_closure);
template <typename T>
void NewContextInterface(uint32_t id, base::OnceClosure done_closure);
template <typename T>
void NewAssociatedRemoteInterface(uint32_t id, base::OnceClosure done_closure);
// This is different to the "normal" MojoLPM testcase model, since we need
// to also own the lifetime of the protobuf object, when it's normally owned
// by libfuzzer.
std::unique_ptr<ProtoTestcase> proto_testcase_ptr_;
// Bindings
raw_ptr<const blink::BrowserInterfaceBrokerProxy>
context_interface_broker_proxy_;
raw_ptr<blink::ThreadSafeBrowserInterfaceBrokerProxy>
process_interface_broker_proxy_;
raw_ptr<blink::AssociatedInterfaceProvider>
associated_interface_provider_;
SEQUENCE_CHECKER(sequence_checker_);
};
namespace {
scoped_refptr<base::SequencedTaskRunner> GetFuzzerTaskRunnerImpl() {
// XXX: This should be main thread? IO thread? Probably doesn't
// actually matter.
static scoped_refptr<base::SequencedTaskRunner> fuzzer_task_runner =
base::SequencedTaskRunner::GetCurrentDefault();
return fuzzer_task_runner;
}
} // anonymous namespace
{% for interface in context_interfaces %}
void RendererTestcase::HandleNew{{interface.identifier}}Action(
uint32_t id,
base::OnceClosure done_closure) {
NewContextInterface<{{interface.namespace}}::{{interface.name}}>(id, std::move(done_closure));
}
{% endfor %}
{% for interface in process_interfaces %}
void RendererTestcase::HandleNew{{interface.identifier}}Action(
uint32_t id,
base::OnceClosure done_closure) {
NewProcessInterface<{{interface.namespace}}::{{interface.name}}>(id, std::move(done_closure));
}
{% endfor %}
{% for interface in associated_interfaces %}
void RendererTestcase::HandleNew{{interface.identifier}}Action(
uint32_t id,
base::OnceClosure done_closure) {
NewAssociatedRemoteInterface<{{interface.namespace}}::{{interface.name}}>(id, std::move(done_closure));
}
{% endfor %}
scoped_refptr<base::SequencedTaskRunner>
RendererTestcase::GetFuzzerTaskRunner() {
return GetFuzzerTaskRunnerImpl();
}
RendererTestcase::RendererTestcase(
std::unique_ptr<ProtoTestcase> testcase,
const blink::BrowserInterfaceBrokerProxy* context_interface_broker_proxy,
blink::ThreadSafeBrowserInterfaceBrokerProxy*
process_interface_broker_proxy,
blink::AssociatedInterfaceProvider* associated_interface_provider)
: {{mojolpm_generator_classname}}(*testcase.get()),
proto_testcase_ptr_(std::move(testcase)),
context_interface_broker_proxy_(context_interface_broker_proxy),
process_interface_broker_proxy_(process_interface_broker_proxy),
associated_interface_provider_(associated_interface_provider) {
// RendererTestcase is created on the main thread, but the actions that
// we want to validate the sequencing of take place on the fuzzer sequence.
DETACH_FROM_SEQUENCE(sequence_checker_);
}
RendererTestcase::~RendererTestcase() {}
void RendererTestcase::SetUp(base::OnceClosure done_closure) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
GetFuzzerTaskRunner()->PostTask(
FROM_HERE,
base::BindOnce(&RendererTestcase::SetUpOnFuzzerThread,
base::Unretained(this), std::move(done_closure)));
}
void RendererTestcase::TearDown(base::OnceClosure done_closure) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
GetFuzzerTaskRunner()->PostTask(
FROM_HERE,
base::BindOnce(&RendererTestcase::TearDownOnFuzzerThread,
base::Unretained(this), std::move(done_closure)));
}
void RendererTestcase::SetUpOnFuzzerThread(base::OnceClosure done_closure) {
mojolpm::GetContext()->StartTestcase();
std::move(done_closure).Run();
}
void RendererTestcase::TearDownOnFuzzerThread(base::OnceClosure done_closure) {
mojolpm::GetContext()->EndTestcase();
std::move(done_closure).Run();
}
template <typename T>
void RendererTestcase::NewProcessInterface(uint32_t id,
base::OnceClosure done_closure) {
mojo::Remote<T> remote;
mojo::GenericPendingReceiver receiver = remote.BindNewPipeAndPassReceiver();
process_interface_broker_proxy_->GetInterface(std::move(receiver));
CHECK(remote.is_bound() && remote.is_connected());
mojolpm::GetContext()->AddInstance(id, std::move(remote));
std::move(done_closure).Run();
}
template <typename T>
void RendererTestcase::NewContextInterface(uint32_t id,
base::OnceClosure done_closure) {
mojo::Remote<T> remote;
mojo::GenericPendingReceiver receiver = remote.BindNewPipeAndPassReceiver();
context_interface_broker_proxy_->GetInterface(std::move(receiver));
CHECK(remote.is_bound() && remote.is_connected());
mojolpm::GetContext()->AddInstance(id, std::move(remote));
std::move(done_closure).Run();
}
template <typename T>
void RendererTestcase::NewAssociatedRemoteInterface(uint32_t id,
base::OnceClosure done_closure) {
mojo::AssociatedRemote<T> associated_remote;
auto receiver = associated_remote.BindNewEndpointAndPassReceiver();
associated_interface_provider_->GetInterface(std::move(receiver));
CHECK(associated_remote.is_bound() && associated_remote.is_connected());
mojolpm::GetContext()->AddInstance(id, std::move(associated_remote));
std::move(done_closure).Run();
}
#endif // {{header_guard}}
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