added a post build script to change the file DOS stub after build

This commit is contained in:
otavepto 2024-01-12 15:38:09 +02:00
parent f7db814f4c
commit 9534e9dd1b
4 changed files with 319 additions and 0 deletions

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@echo off
setlocal
pushd "%~dp0"
set /a last_code=0
set /a VERBOSE=1
set "debug_info=/DEBUG:NONE"
set "debug_info_format="
set "optimization_level=/Ox /Oi /Ob2 /Ot /O2 /Oy-"
set "dbg_defs=/DEMU_RELEASE_BUILD /DNDEBUG"
set "build_root_dir=."
:: common stuff
set "build_temp_dir=build"
set "common_compiler_args=/std:c++17 /MP /DYNAMICBASE /errorReport:none /nologo /utf-8 /EHsc /GF /GL- /GS"
set "common_compiler_args_32=%common_compiler_args%"
set "common_compiler_args_64=%common_compiler_args%"
:: "win" variables are used to build .dll and /SUBSYTEM:WINDOWS applications,
:: "exe" variables are used to build pure console applications
set "common_linker_args=/DYNAMICBASE /ERRORREPORT:NONE /NOLOGO /emittoolversioninfo:no"
set "common_win_linker_args_32=%common_linker_args%"
set "common_win_linker_args_64=%common_linker_args%"
set "common_exe_linker_args_32=%common_linker_args%"
set "common_exe_linker_args_64=%common_linker_args%"
:: directories to use for #include
set release_incs_both=%ssq_inc% /I"../../../pe_helpers"
set release_incs32=%release_incs_both%
set release_incs64=%release_incs_both%
:: libraries to link with
:: copied from Visual Studio 2022
set "CoreLibraryDependencies=kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib"
set "release_libs_both=%CoreLibraryDependencies% Ws2_32.lib Iphlpapi.lib Wldap32.lib Winmm.lib Bcrypt.lib Dbghelp.lib"
set release_libs32=%release_libs_both%
set release_libs64=%release_libs_both%
:: common source files used everywhere, just for convinience, you still have to provide a complete list later
set release_src="file_dos_stub.cpp" "../../../pe_helpers/pe_helpers.cpp"
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: x32
setlocal
call "../../../build_win_set_env.bat" 32 || (
endlocal
call :err_msg "Couldn't find Visual Studio or build tools - 32"
set /a last_code=1
goto :end_script
)
echo // building exe - 32
call :build_for 1 1 "%build_root_dir%\file_dos_stub_32.exe" release_src
set /a last_code+=%errorlevel%
endlocal & set /a last_code=%last_code%
timeout /t 3 /nobreak
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: x64
setlocal
call "../../../build_win_set_env.bat" 64 || (
endlocal
call :err_msg "Couldn't find Visual Studio or build tools - 64"
set /a last_code=1
goto :end_script
)
echo // building exe - 64
call :build_for 1 1 "%build_root_dir%\file_dos_stub_64.exe" release_src
set /a last_code+=%errorlevel%
endlocal & set /a last_code=%last_code%
:: cleanup
echo // cleaning up
call :cleanup
echo: & echo:
goto :end_script
:: 1: is 32 bit build
:: 2: subsystem type [0: dll, 1: console app, 2: win32 app]
:: check this table: https://learn.microsoft.com/en-us/cpp/build/reference/entry-entry-point-symbol#remarks
:: 3: out filepath
:: 4: (ref) all source files
:: 5: (optional) (ref) extra inc dirs
:: 6: (optional) extra defs
:: 7: (optional) extra libs
:build_for
setlocal
set /a _is_32_bit_build=%~1 2>nul || (
endlocal
call :err_msg "Missing build arch"
exit /b 1
)
set /a _subsys_type=%~2 2>nul || (
endlocal
call :err_msg "Missing subsystem type"
exit /b 1
)
set "_out_filepath=%~3"
if "%_out_filepath%"=="" (
endlocal
call :err_msg "Missing output filepath"
exit /b 1
)
set "_all_src="
for /f "tokens=* delims=" %%A in (' if not "%~4" equ "" if defined %~4 echo %%%~4%%') do set _all_src=%%A
if not defined _all_src (
endlocal
call :err_msg "Missing src files"
exit /b 1
)
set "_extra_inc_dirs="
for /f "tokens=* delims=" %%A in (' if not "%~5" equ "" if defined %~5 echo %%%~5%%') do set _extra_inc_dirs=%%A
set "_extra_defs=%~6"
set "_extra_libs=%~7"
set "_build_tmp="
for /f "usebackq tokens=* delims=" %%A in ('"%_out_filepath%"') do (
set "_build_tmp=%build_temp_dir%\%%~nA_%_is_32_bit_build%"
)
if "%_build_tmp%"=="" (
endlocal
call :err_msg "Unable to set build tmp dir from filename"
exit /b 1
)
mkdir "%_build_tmp%"
set "_target_args=%common_compiler_args_64%"
if %_is_32_bit_build% equ 1 (
set "_target_args=%common_compiler_args_32%"
)
set _target_inc_dirs=%release_incs64%
if %_is_32_bit_build% equ 1 (
set _target_inc_dirs=%release_incs32%
)
set _target_libs=%release_libs64%
if %_is_32_bit_build% equ 1 (
set _target_libs=%release_libs32%
)
:: https://learn.microsoft.com/en-us/cpp/build/reference/md-mt-ld-use-run-time-library
:: https://learn.microsoft.com/en-us/cpp/build/reference/dll-build-a-dll
set "_runtime_type=/MT"
set "_target_linker_args="
:: [0: dll, 1: console app, 2: win32 app]
if %_subsys_type% equ 0 (
set "_runtime_type=/MT /LD"
if %_is_32_bit_build% equ 1 (
set "_target_linker_args=%common_win_linker_args_32%"
) else (
set "_target_linker_args=%common_win_linker_args_64%"
)
) else if %_subsys_type% equ 1 (
if %_is_32_bit_build% equ 1 (
set "_target_linker_args=%common_exe_linker_args_32%"
) else (
set "_target_linker_args=%common_exe_linker_args_64%"
)
) else if %_subsys_type% equ 2 (
if %_is_32_bit_build% equ 1 (
set "_target_linker_args=%common_win_linker_args_32%"
) else (
set "_target_linker_args=%common_win_linker_args_64%"
)
) else (
endlocal
call :err_msg "Unknown subsystem type"
exit /b 1
)
if "%VERBOSE%" equ "1" (
echo cl.exe %_target_args% /Fo%_build_tmp%\ /Fe%_build_tmp%\ %debug_info% %debug_info_format% %optimization_level% %release_defs% %_extra_defs% %_runtime_type% %_target_inc_dirs% %_extra_inc_dirs% %_all_src% %_target_libs% %_extra_libs% /link %_target_linker_args% /OUT:"%_out_filepath%"
echo:
)
cl.exe %_target_args% /Fo%_build_tmp%\ /Fe%_build_tmp%\ %debug_info% %debug_info_format% %optimization_level% %release_defs% %_extra_defs% %_runtime_type% %_target_inc_dirs% %_extra_inc_dirs% %_all_src% %_target_libs% %_extra_libs% /link %_target_linker_args% /OUT:"%_out_filepath%"
set /a _exit=%errorlevel%
rmdir /s /q "%_build_tmp%"
endlocal & exit /b %_exit%
:err_msg
1>&2 echo [X] %~1
exit /b
:cleanup
del /f /q *.exp >nul 2>&1
del /f /q *.lib >nul 2>&1
del /f /q *.a >nul 2>&1
del /f /q *.obj >nul 2>&1
del /f /q *.pdb >nul 2>&1
del /f /q *.ilk >nul 2>&1
rmdir /s /q "%build_temp_dir%" >nul 2>&1
for %%A in ("ilk" "lib" "exp") do (
del /f /s /q "%build_root_dir%\*.%%~A" >nul 2>&1
)
exit /b
:end_script
echo:
if %last_code% equ 0 (
echo [GG] no failures
) else (
1>&2 echo [XX] general failure
)
popd
endlocal & (
exit /b %last_code%
)

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#include <fstream>
#include <iostream>
#include <vector>
#include "pe_helpers/pe_helpers.hpp"
static size_t get_file_size(std::fstream &file)
{
try
{
auto org_pos = file.tellg();
file.seekg(0, std::ios::end);
auto size = file.tellg();
file.seekg(org_pos, std::ios::beg);
return (size_t)size;
}
catch(...)
{
return 0;
}
}
static std::vector<uint8_t> load_file(std::fstream &file, size_t size)
{
try
{
auto org_pos = file.tellg();
file.seekg(0, std::ios::beg);
std::vector<uint8_t> data(size, 0);
file.read((char *)&data[0], data.size());
file.seekg(org_pos, std::ios::beg);
return data;
}
catch(const std::exception& e)
{
return std::vector<uint8_t>();
}
}
constexpr static size_t DOS_STUB_OOFSET = offsetof(IMAGE_DOS_HEADER, e_lfanew) + sizeof(IMAGE_DOS_HEADER::e_lfanew);
constexpr static const char DOS_STUB_SIGNATURE[] = "VLV";
constexpr static uint32_t DOS_STUB_ONE = 1; // what is this?
int main(int argc, char* *argv)
{
if (argc < 2) {
std::cerr << "Expected one or more binary files" << std::endl;
return 1;
}
for (size_t i = 1; i < argc; ++i) {
auto arg = argv[i];
std::fstream file(arg, std::ios::in | std::ios::out | std::ios::binary);
if (!file.is_open()) {
std::cerr << "Failed to open file: '" << arg << "'" << std::endl;
return 1;
}
auto file_size = get_file_size(file);
if (!file_size) {
std::cerr << "Failed get file size for file: '" << arg << "'" << std::endl;
return 1;
}
auto data = load_file(file, file_size);
if (data.empty()) {
std::cerr << "Failed get file data for file: '" << arg << "'" << std::endl;
return 1;
}
uint32_t pe_size = (uint32_t)pe_helpers::get_pe_size((HMODULE)&data[0]);
if (!pe_size) {
std::cerr << "Failed get PE size for file: '" << arg << "'" << std::endl;
return 1;
}
// std::cout << "File size = " << file_size << ", PE size = " << pe_size << std::endl;
file.seekp(DOS_STUB_OOFSET, std::ios::beg);
// 4 bytes: 'V' 'L' 'V' '\0'
file.write(DOS_STUB_SIGNATURE, sizeof(DOS_STUB_SIGNATURE));
// 4 bytes: (uint32_t)1
file.write((const char *)&DOS_STUB_ONE, sizeof(DOS_STUB_ONE));
// 4 bytes: PE image size
file.write((const char *)&pe_size, sizeof(pe_size));
file.close();
}
return 0;
}

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