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// Copyright (c) 2017 Egor Tensin <Egor.Tensin@gmail.com>
// This file is part of the "PDB repository" project.
// For details, see https://github.com/egor-tensin/pdb-repo.
// Distributed under the MIT License.
#pragma once
#include "address.hpp"
#include <Windows.h>
#include <DbgHelp.h>
#include <cstring>
#include <sstream>
#include <stdexcept>
#include <string>
namespace pdb
{
class ModuleInfo
{
public:
typedef IMAGEHLP_MODULE64 Raw;
ModuleInfo()
: raw{prepare_buffer()}
{ }
explicit ModuleInfo(const Raw& raw)
: raw{raw}
{ }
explicit operator Raw&() { return raw; }
explicit operator const Raw&() const { return raw; }
Address get_offline_base() const { return raw.BaseOfImage; }
std::string get_name() const { return raw.ModuleName; }
private:
static Raw prepare_buffer()
{
Raw raw;
std::memset(&raw, 0, sizeof(raw));
raw.SizeOfStruct = sizeof(raw);
return raw;
}
Raw raw;
};
class Module : public ModuleInfo
{
public:
Module(Address online_base, const ModuleInfo& info)
: ModuleInfo{info}
, online_base{online_base}
{ }
Address get_online_base() const { return online_base; }
Address translate_offline_address(Address offline) const
{
if (offline < get_offline_base())
throw std::range_error{invalid_offline_address(offline)};
return offline - get_offline_base() + get_online_base();
}
Address translate_online_address(Address online) const
{
if (online < get_online_base())
throw std::range_error{invalid_online_address(online)};
return online - get_online_base() + get_offline_base();
}
private:
std::string invalid_offline_address(Address offline) const
{
std::ostringstream oss;
oss << "offline address " << format_address(offline)
<< " doesn't belong to module " << get_name()
<< " (base offline address " << format_address(get_offline_base()) << ')';
return oss.str();
}
std::string invalid_online_address(Address online) const
{
std::ostringstream oss;
oss << "online address " << format_address(online)
<< " doesn't belong to module " << get_name()
<< " (base online address " << format_address(get_online_base()) << ')';
return oss.str();
}
const Address online_base;
};
}
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