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// Copyright 2015 Antony Polukhin.
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_DLL_DETAIL_WINDOWS_PE_INFO_HPP
#define BOOST_DLL_DETAIL_WINDOWS_PE_INFO_HPP
#include <boost/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
#include <boost/filesystem/fstream.hpp>
#include <boost/dll/detail/x_info_interface.hpp>
namespace boost { namespace dll { namespace detail {
// reference:
// http://www.joachim-bauch.de/tutorials/loading-a-dll-from-memory/
// http://msdn.microsoft.com/en-us/magazine/ms809762.aspx
// http://msdn.microsoft.com/en-us/magazine/cc301808.aspx
//
// Basic Windows typedefs. We can not use <boost/detail/winapi/basic_types.hpp> header
// because that header must be included only on Windows platform
typedef unsigned char BYTE_;
typedef unsigned short WORD_;
typedef unsigned long DWORD_;
typedef long LONG_;
typedef unsigned long ULONG_;
typedef boost::int64_t LONGLONG_;
typedef boost::uint64_t ULONGLONG_;
struct IMAGE_DOS_HEADER_ { // 32/64 independent header
boost::dll::detail::WORD_ e_magic; // Magic number
boost::dll::detail::WORD_ e_cblp; // Bytes on last page of file
boost::dll::detail::WORD_ e_cp; // Pages in file
boost::dll::detail::WORD_ e_crlc; // Relocations
boost::dll::detail::WORD_ e_cparhdr; // Size of header in paragraphs
boost::dll::detail::WORD_ e_minalloc; // Minimum extra paragraphs needed
boost::dll::detail::WORD_ e_maxalloc; // Maximum extra paragraphs needed
boost::dll::detail::WORD_ e_ss; // Initial (relative) SS value
boost::dll::detail::WORD_ e_sp; // Initial SP value
boost::dll::detail::WORD_ e_csum; // Checksum
boost::dll::detail::WORD_ e_ip; // Initial IP value
boost::dll::detail::WORD_ e_cs; // Initial (relative) CS value
boost::dll::detail::WORD_ e_lfarlc; // File address of relocation table
boost::dll::detail::WORD_ e_ovno; // Overlay number
boost::dll::detail::WORD_ e_res[4]; // Reserved words
boost::dll::detail::WORD_ e_oemid; // OEM identifier (for e_oeminfo)
boost::dll::detail::WORD_ e_oeminfo; // OEM information; e_oemid specific
boost::dll::detail::WORD_ e_res2[10]; // Reserved words
boost::dll::detail::LONG_ e_lfanew; // File address of new exe header
};
struct IMAGE_FILE_HEADER_ { // 32/64 independent header
boost::dll::detail::WORD_ Machine;
boost::dll::detail::WORD_ NumberOfSections;
boost::dll::detail::DWORD_ TimeDateStamp;
boost::dll::detail::DWORD_ PointerToSymbolTable;
boost::dll::detail::DWORD_ NumberOfSymbols;
boost::dll::detail::WORD_ SizeOfOptionalHeader;
boost::dll::detail::WORD_ Characteristics;
};
struct IMAGE_DATA_DIRECTORY_ { // 32/64 independent header
boost::dll::detail::DWORD_ VirtualAddress;
boost::dll::detail::DWORD_ Size;
};
struct IMAGE_EXPORT_DIRECTORY_ { // 32/64 independent header
boost::dll::detail::DWORD_ Characteristics;
boost::dll::detail::DWORD_ TimeDateStamp;
boost::dll::detail::WORD_ MajorVersion;
boost::dll::detail::WORD_ MinorVersion;
boost::dll::detail::DWORD_ Name;
boost::dll::detail::DWORD_ Base;
boost::dll::detail::DWORD_ NumberOfFunctions;
boost::dll::detail::DWORD_ NumberOfNames;
boost::dll::detail::DWORD_ AddressOfFunctions;
boost::dll::detail::DWORD_ AddressOfNames;
boost::dll::detail::DWORD_ AddressOfNameOrdinals;
};
struct IMAGE_SECTION_HEADER_ { // 32/64 independent header
static const std::size_t IMAGE_SIZEOF_SHORT_NAME_ = 8;
boost::dll::detail::BYTE_ Name[IMAGE_SIZEOF_SHORT_NAME_];
union {
boost::dll::detail::DWORD_ PhysicalAddress;
boost::dll::detail::DWORD_ VirtualSize;
} Misc;
boost::dll::detail::DWORD_ VirtualAddress;
boost::dll::detail::DWORD_ SizeOfRawData;
boost::dll::detail::DWORD_ PointerToRawData;
boost::dll::detail::DWORD_ PointerToRelocations;
boost::dll::detail::DWORD_ PointerToLinenumbers;
boost::dll::detail::WORD_ NumberOfRelocations;
boost::dll::detail::WORD_ NumberOfLinenumbers;
boost::dll::detail::DWORD_ Characteristics;
};
template <class AddressOffsetT>
struct IMAGE_OPTIONAL_HEADER_template {
static const std::size_t IMAGE_NUMBEROF_DIRECTORY_ENTRIES_ = 16;
boost::dll::detail::WORD_ Magic;
boost::dll::detail::BYTE_ MajorLinkerVersion;
boost::dll::detail::BYTE_ MinorLinkerVersion;
boost::dll::detail::DWORD_ SizeOfCode;
boost::dll::detail::DWORD_ SizeOfInitializedData;
boost::dll::detail::DWORD_ SizeOfUninitializedData;
boost::dll::detail::DWORD_ AddressOfEntryPoint;
union {
boost::dll::detail::DWORD_ BaseOfCode;
unsigned char padding_[sizeof(AddressOffsetT) == 8 ? 4 : 8]; // in x64 version BaseOfData does not exist
} BaseOfCode_and_BaseOfData;
AddressOffsetT ImageBase;
boost::dll::detail::DWORD_ SectionAlignment;
boost::dll::detail::DWORD_ FileAlignment;
boost::dll::detail::WORD_ MajorOperatingSystemVersion;
boost::dll::detail::WORD_ MinorOperatingSystemVersion;
boost::dll::detail::WORD_ MajorImageVersion;
boost::dll::detail::WORD_ MinorImageVersion;
boost::dll::detail::WORD_ MajorSubsystemVersion;
boost::dll::detail::WORD_ MinorSubsystemVersion;
boost::dll::detail::DWORD_ Win32VersionValue;
boost::dll::detail::DWORD_ SizeOfImage;
boost::dll::detail::DWORD_ SizeOfHeaders;
boost::dll::detail::DWORD_ CheckSum;
boost::dll::detail::WORD_ Subsystem;
boost::dll::detail::WORD_ DllCharacteristics;
AddressOffsetT SizeOfStackReserve;
AddressOffsetT SizeOfStackCommit;
AddressOffsetT SizeOfHeapReserve;
AddressOffsetT SizeOfHeapCommit;
boost::dll::detail::DWORD_ LoaderFlags;
boost::dll::detail::DWORD_ NumberOfRvaAndSizes;
IMAGE_DATA_DIRECTORY_ DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES_];
};
typedef IMAGE_OPTIONAL_HEADER_template<boost::dll::detail::DWORD_> IMAGE_OPTIONAL_HEADER32_;
typedef IMAGE_OPTIONAL_HEADER_template<boost::dll::detail::ULONGLONG_> IMAGE_OPTIONAL_HEADER64_;
template <class AddressOffsetT>
struct IMAGE_NT_HEADERS_template {
boost::dll::detail::DWORD_ Signature;
IMAGE_FILE_HEADER_ FileHeader;
IMAGE_OPTIONAL_HEADER_template<AddressOffsetT> OptionalHeader;
};
typedef IMAGE_NT_HEADERS_template<boost::dll::detail::DWORD_> IMAGE_NT_HEADERS32_;
typedef IMAGE_NT_HEADERS_template<boost::dll::detail::ULONGLONG_> IMAGE_NT_HEADERS64_;
template <class AddressOffsetT>
class pe_info: public x_info_interface {
boost::filesystem::ifstream& f_;
typedef IMAGE_NT_HEADERS_template<AddressOffsetT> header_t;
typedef IMAGE_EXPORT_DIRECTORY_ exports_t;
typedef IMAGE_SECTION_HEADER_ section_t;
typedef IMAGE_DOS_HEADER_ dos_t;
template <class T>
inline void read_raw(T& value, std::size_t size = sizeof(T)) const {
f_.read(reinterpret_cast<char*>(&value), size);
}
public:
static bool parsing_supported(boost::filesystem::ifstream& f) {
dos_t dos;
f.seekg(0);
f.read(reinterpret_cast<char*>(&dos), sizeof(dos));
// 'MZ' and 'ZM' according to Wikipedia
if (dos.e_magic != 0x4D5A && dos.e_magic != 0x5A4D) {
return false;
}
header_t h;
f.seekg(dos.e_lfanew);
f.read(reinterpret_cast<char*>(&h), sizeof(h));
return h.Signature == 0x00004550 // 'PE00'
&& h.OptionalHeader.Magic == (sizeof(boost::uint32_t) == sizeof(AddressOffsetT) ? 0x10B : 0x20B);
}
explicit pe_info(boost::filesystem::ifstream& f) BOOST_NOEXCEPT
: f_(f)
{}
private:
inline header_t header() {
header_t h;
dos_t dos;
f_.seekg(0);
read_raw(dos);
f_.seekg(dos.e_lfanew);
read_raw(h);
return h;
}
inline exports_t exports(const header_t& h) {
exports_t exports;
static const unsigned int IMAGE_DIRECTORY_ENTRY_EXPORT_ = 0;
const std::size_t exp_virtual_address = h.OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT_].VirtualAddress;
const std::size_t real_offset = get_file_offset(exp_virtual_address, h);
BOOST_ASSERT(real_offset);
f_.seekg(real_offset);
read_raw(exports);
return exports;
}
std::size_t get_file_offset(std::size_t virtual_address, const header_t& h) {
section_t image_section_header;
{ // f_.seekg to the beginning on section headers
dos_t dos;
f_.seekg(0);
read_raw(dos);
f_.seekg(dos.e_lfanew + sizeof(header_t));
}
for (std::size_t i = 0;i < h.FileHeader.NumberOfSections;++i) {
read_raw(image_section_header);
if (virtual_address >= image_section_header.VirtualAddress
&& virtual_address < image_section_header.VirtualAddress + image_section_header.SizeOfRawData)
{
return image_section_header.PointerToRawData + virtual_address - image_section_header.VirtualAddress;
}
}
return 0;
}
public:
std::vector<std::string> sections() {
std::vector<std::string> ret;
const header_t h = header();
ret.reserve(h.FileHeader.NumberOfSections);
// get names, e.g: .text .rdata .data .rsrc .reloc
section_t image_section_header;
char name_helper[section_t::IMAGE_SIZEOF_SHORT_NAME_ + 1];
std::memset(name_helper, 0, sizeof(name_helper));
for (std::size_t i = 0;i < h.FileHeader.NumberOfSections;++i) {
// There is no terminating null character if the string is exactly eight characters long
read_raw(image_section_header);
std::memcpy(name_helper, image_section_header.Name, section_t::IMAGE_SIZEOF_SHORT_NAME_);
if (name_helper[0] != '/') {
ret.push_back(name_helper);
} else {
// For longer names, image_section_header.Name contains a slash (/) followed by ASCII representation of a decimal number.
// this number is an offset into the string table.
// TODO: fixme
ret.push_back(name_helper);
}
}
return ret;
}
std::vector<std::string> symbols() {
std::vector<std::string> ret;
const header_t h = header();
const exports_t exprt = exports(h);
const std::size_t exported_symbols = exprt.NumberOfNames;
const std::size_t fixed_names_addr = get_file_offset(exprt.AddressOfNames, h);
ret.reserve(exported_symbols);
boost::dll::detail::DWORD_ name_offset;
std::string symbol_name;
for (std::size_t i = 0;i < exported_symbols;++i) {
f_.seekg(fixed_names_addr + i * sizeof(name_offset));
read_raw(name_offset);
f_.seekg(get_file_offset(name_offset, h));
getline(f_, symbol_name, '\0');
ret.push_back(symbol_name);
}
return ret;
}
std::vector<std::string> symbols(const char* section_name) {
std::vector<std::string> ret;
const header_t h = header();
std::size_t section_begin_addr = 0;
std::size_t section_end_addr = 0;
{ // getting address range for the section
section_t image_section_header;
char name_helper[section_t::IMAGE_SIZEOF_SHORT_NAME_ + 1];
std::memset(name_helper, 0, sizeof(name_helper));
for (std::size_t i = 0;i < h.FileHeader.NumberOfSections;++i) {
// There is no terminating null character if the string is exactly eight characters long
read_raw(image_section_header);
std::memcpy(name_helper, image_section_header.Name, section_t::IMAGE_SIZEOF_SHORT_NAME_);
if (!std::strcmp(section_name, name_helper)) {
section_begin_addr = image_section_header.PointerToRawData;
section_end_addr = section_begin_addr + image_section_header.SizeOfRawData;
}
}
BOOST_ASSERT(section_begin_addr);
BOOST_ASSERT(section_end_addr);
}
const exports_t exprt = exports(h);
const std::size_t exported_symbols = exprt.NumberOfFunctions;
const std::size_t fixed_names_addr = get_file_offset(exprt.AddressOfNames, h);
const std::size_t fixed_ordinals_addr = get_file_offset(exprt.AddressOfNameOrdinals, h);
const std::size_t fixed_functions_addr = get_file_offset(exprt.AddressOfFunctions, h);
ret.reserve(exported_symbols);
boost::dll::detail::DWORD_ ptr;
boost::dll::detail::WORD_ ordinal;
std::string symbol_name;
for (std::size_t i = 0;i < exported_symbols;++i) {
// getting ordinal
f_.seekg(fixed_ordinals_addr + i * sizeof(ordinal));
read_raw(ordinal);
// getting function addr
f_.seekg(fixed_functions_addr + ordinal * sizeof(ptr));
read_raw(ptr);
ptr = static_cast<boost::dll::detail::DWORD_>( get_file_offset(ptr, h) );
if (ptr >= section_end_addr || ptr < section_begin_addr) {
continue;
}
f_.seekg(fixed_names_addr + i * sizeof(ptr));
read_raw(ptr);
f_.seekg(get_file_offset(ptr, h));
getline(f_, symbol_name, '\0');
ret.push_back(symbol_name);
}
return ret;
}
// a test method to get dependents modules,
// who my plugin imports (1st level only)
/*
e.g. for myself I get:
KERNEL32.dll
MSVCP110D.dll
boost_system-vc-mt-gd-1_56.dll
MSVCR110D.dll
*/
/*
std::vector<std::string> depend_of(boost::system::error_code &ec) BOOST_NOEXCEPT {
std::vector<std::string> ret;
IMAGE_DOS_HEADER* image_dos_header = (IMAGE_DOS_HEADER*)native();
if(!image_dos_header) {
// ERROR_BAD_EXE_FORMAT
ec = boost::system::error_code(
boost::system::errc::executable_format_error,
boost::system::generic_category()
);
return ret;
}
IMAGE_OPTIONAL_HEADER* image_optional_header = (IMAGE_OPTIONAL_HEADER*)((boost::dll::detail::BYTE_*)native() + image_dos_header->e_lfanew + 24);
if(!image_optional_header) {
// ERROR_BAD_EXE_FORMAT
ec = boost::system::error_code(
boost::system::errc::executable_format_error,
boost::system::generic_category()
);
return ret;
}
IMAGE_IMPORT_DESCRIPTOR* image_import_descriptor = (IMAGE_IMPORT_DESCRIPTOR*)((boost::dll::detail::BYTE_*)native() + image_optional_header->DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress);
if(!image_import_descriptor) {
// ERROR_BAD_EXE_FORMAT
ec = boost::system::error_code(
boost::system::errc::executable_format_error,
boost::system::generic_category()
);
return ret;
}
while(image_import_descriptor->FirstThunk) {
std::string module_name = reinterpret_cast<char*>((boost::dll::detail::BYTE_*)native() + image_import_descriptor->Name);
if(module_name.size()) {
ret.push_back(module_name);
}
image_import_descriptor++;
}
return ret;
}
*/
};
typedef pe_info<boost::dll::detail::DWORD_> pe_info32;
typedef pe_info<boost::dll::detail::ULONGLONG_> pe_info64;
}}} // namespace boost::dll::detail
#endif // BOOST_DLL_DETAIL_WINDOWS_PE_INFO_HPP
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