File: harness.h.tmpl

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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.

#ifndef COMPONENTS_EXO_WAYLAND_FUZZER_HARNESS_H_
#define COMPONENTS_EXO_WAYLAND_FUZZER_HARNESS_H_

#include <memory>
#include <map>

#include <wayland-util.h>

#include "base/memory/unsafe_shared_memory_region.h"
#include "components/exo/wayland/fuzzer/actions.pb.h"

// Forwards declarations for the wayland-defined structs.
{% for interface in interfaces %}
  struct {{interface.name}};
{% endfor %}

namespace exo {
namespace wayland_fuzzer {

// When using LPM to fuzz wayland, the wayland_fuzzer::actions proto defines the
// sequence of events that the fuzzer wants to perform. It then falls to this
// harness to actually convert that sequence into the relevant calls, as if it
// were a normal wayland client.
class Harness {
 public:
  Harness();

  Harness(const Harness&) = delete;
  Harness& operator=(const Harness&) = delete;

  ~Harness();

  void Run(const actions::action& current_step);

  void Run(const actions::actions& all_steps);

  {% for interface in interfaces %}
    std::vector<::{{interface.name}}*> {{interface.name}}_list_;

    void add_{{interface.name}}({{interface.cpp_type}} new_obj) {
      {{interface.name}}_list_.push_back(new_obj);
    }

    void remove_{{interface.name}}(uint32_t idx) {
      if (idx < {{interface.name}}_list_.size())
        {{interface.name}}_list_[idx] = nullptr;
    }

    {{interface.cpp_type}} get_{{interface.name}}(uint32_t idx) const {
      return idx < {{interface.name}}_list_.size()
        ? {{interface.name}}_list_[idx]
        : nullptr;
    }
    {% if interface.is_global %}
      std::vector<std::pair<uint32_t, uint32_t>> {{interface.name}}_globals_;
    {% endif %}
  {% endfor %}

  int GetFileDescriptor(int id);

 private:
  std::map<int, base::UnsafeSharedMemoryRegion> shared_memory_map_;
};

}  // namespace wayland_fuzzer
}  // namespace exo

#endif  // COMPONENTS_EXO_WAYLAND_FUZZER_HARNESS_H_