FunctionCall.hh

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/*
 * Copyright 2021 Assured Information Security, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#pragma once
 
#include <introvirt/core/fwd.hh>
#include <introvirt/core/memory/guest_ptr.hh>
#include <introvirt/util/json/json.hh>
 
#include <functional>
#include <iostream>
#include <memory>
#include <string>
#include <unordered_map>
 
namespace introvirt {
 
class FunctionCall {
  public:
    virtual guest_ptr<void> return_address() const = 0;
 
    virtual void return_address(const guest_ptr<void>& value) = 0;
 
    bool hook_return() const;
 
    void hook_return(bool val);
 
    virtual bool is_return_event(Event& event) const = 0;
 
    virtual void handle_return(Event& event) = 0;
 
    virtual bool returned() const = 0;
 
    virtual const std::string& library_name() const = 0;
 
    virtual const std::string& function_name() const = 0;
 
    virtual void write(std::ostream& os = std::cout) const = 0;
 
    virtual Json::Value json() const = 0;
 
    void data(const std::string& key, const std::shared_ptr<void>& value);
 
    void data(const std::string& key, std::shared_ptr<void>&& value);
 
    std::shared_ptr<void> data(const std::string& key);
 
    std::shared_ptr<const void> data(const std::string& key) const;
 
    virtual ~FunctionCall() = default;
 
  private:
    std::unordered_map<std::string, std::shared_ptr<void>> data_;
    bool hook_return_ = false;
};
 
} // namespace introvirt