ExportEntry.hpp

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/* Copyright 2017 - 2024 R. Thomas
 * Copyright 2017 - 2024 Quarkslab
 *
 * 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.
 */
#ifndef LIEF_PE_EXPORT_ENTRY_H
#define LIEF_PE_EXPORT_ENTRY_H
 
#include <string>
#include <ostream>
 
#include "LIEF/Object.hpp"
#include "LIEF/visibility.h"
#include "LIEF/Abstract/Symbol.hpp"
 
namespace LIEF {
namespace PE {
 
class Builder;
class Parser;
 
class LIEF_API ExportEntry : public LIEF::Symbol {
 
  friend class Builder;
  friend class Parser;
 
  public:
  struct LIEF_API forward_information_t {
    std::string library;
    std::string function;
 
    operator bool() const {
      return !library.empty() || !function.empty();
    }
 
    LIEF_API friend std::ostream& operator<<(std::ostream& os, const forward_information_t& info);
  };
 
  public:
  ExportEntry() = default;
  ExportEntry(uint32_t address, bool is_extern,
              uint16_t ordinal, uint32_t function_rva);
  ExportEntry(const ExportEntry&) = default;
  ExportEntry& operator=(const ExportEntry&) = default;
  ~ExportEntry() override = default;
 
  uint16_t ordinal() const {
    return ordinal_;
  }
  uint32_t address() const {
    return address_;
  }
  bool is_extern() const {
    return is_extern_;
  }
  bool is_forwarded() const {
    return forward_info_;
  }
 
  forward_information_t forward_information() const {
    return is_forwarded() ? forward_info_ : forward_information_t{};
  }
 
  uint32_t function_rva() const {
    return function_rva_;
  }
 
  void ordinal(uint16_t ordinal) {
    ordinal_ = ordinal;
  }
 
  void address(uint32_t address) {
    address_ = address;
  }
 
  void is_extern(bool is_extern) {
    is_extern_ = is_extern;
  }
 
  uint64_t value() const override {
    return address();
  }
 
  void value(uint64_t value) override {
    address(static_cast<uint32_t>(value));
  }
 
  void set_forward_info(std::string lib, std::string function)  {
    forward_info_.library =  std::move(lib);
    forward_info_.function = std::move(function);
  }
 
  void accept(Visitor& visitor) const override;
 
 
  LIEF_API friend std::ostream& operator<<(std::ostream& os, const ExportEntry& exportEntry);
 
  private:
  uint32_t function_rva_ = 0;
  uint16_t ordinal_ = 0;
  uint32_t address_ = 0;
  bool     is_extern_ = false;
 
  forward_information_t forward_info_;
 
};
 
}
}
 
#endif /* PE_EXPORTENTRY_H */