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refactored the entire win client loader to use C++ + use relative paths to the exe itself + added a debug log

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otavepto 2024-01-13 01:18:52 +02:00
parent d1fdde23cc
commit 00ace6727d
1 changed files with 207 additions and 230 deletions
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241
tools/steamclient_loader/win/ColdClientLoader.cpp
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@ -1,9 +1,10 @@
// My own modified version of ColdClientLoader originally written by Rat431 // a Modified version of ColdClientLoader originally written by Rat431
// https://github.com/Rat431/ColdAPI_Steam/tree/master/src/ColdClientLoader // https://github.com/Rat431/ColdAPI_Steam/tree/master/src/ColdClientLoader
#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers #include "common_helpers/common_helpers.hpp"
// Windows Header Files #include "pe_helpers/pe_helpers.hpp"
#include <windows.h> #include "dbg_log/dbg_log.hpp"
// C RunTime Header Files // C RunTime Header Files
#include <stdlib.h> #include <stdlib.h>
#include <malloc.h> #include <malloc.h>
@ -12,94 +13,104 @@
#include <stdio.h> #include <stdio.h>
#include <string> #include <string>
#include "pe_helpers/pe_helpers.hpp"
bool IsNotRelativePathOrRemoveFileName(WCHAR* output, bool Remove) static const std::wstring IniFile = pe_helpers::get_current_exe_path_w() + L"ColdClientLoader.ini";
static const std::wstring dbg_file = pe_helpers::get_current_exe_path_w() + L"COLD_LDR_LOG.txt";
constexpr static const char STEAM_UNIVERSE[] = "Public";
std::wstring get_ini_value(LPCWSTR section, LPCWSTR key, LPCWSTR default_val = NULL)
{ {
int LG = lstrlenW(output); std::vector<wchar_t> buff(INT16_MAX);
for (int i = LG; i > 0; i--) { DWORD read_chars = GetPrivateProfileStringW(section, key, default_val, &buff[0], (DWORD)buff.size(), IniFile.c_str());
if (output[i] == '\\') { if (!read_chars) {
if(Remove) std::wstring();
RtlFillMemory(&output[i], (LG - i) * sizeof(WCHAR), NULL);
return true;
} }
// "If neither lpAppName nor lpKeyName is NULL and the supplied destination buffer is too small to hold the requested string, the return value is equal to nSize minus one"
int trials = 3;
while ((read_chars == (buff.size() - 1)) && trials > 0) {
buff.resize(buff.size() * 2);
read_chars = GetPrivateProfileStringW(section, key, default_val, &buff[0], (DWORD)buff.size(), IniFile.c_str());
--trials;
} }
return false;
return std::wstring(&buff[0], read_chars);
} }
int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPWSTR lpCmdLine, _In_ int nCmdShow) int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPWSTR lpCmdLine, _In_ int nCmdShow)
{ {
WCHAR CurrentDirectory[MAX_PATH] = { 0 }; dbg_log::init(dbg_file.c_str());
WCHAR Client64Path[MAX_PATH] = { 0 };
WCHAR ClientPath[MAX_PATH] = { 0 };
WCHAR ExeFile[MAX_PATH] = { 0 };
WCHAR ExeRunDir[MAX_PATH] = { 0 };
WCHAR ExeCommandLine[4096] = { 0 };
WCHAR AppId[128] = { 0 };
int Length = GetModuleFileNameW(GetModuleHandleW(NULL), CurrentDirectory, sizeof(CurrentDirectory)) + 1; if (!common_helpers::file_exist(IniFile)) {
for (int i = Length; i > 0; i--) { dbg_log::write(L"Couldn't find the configuration file: " + dbg_file);
if (CurrentDirectory[i] == '\\') { MessageBoxA(NULL, "Couldn't find the configuration file ColdClientLoader.ini.", "ColdClientLoader", MB_ICONERROR);
lstrcpyW(&CurrentDirectory[i + 1], L"ColdClientLoader.ini"); dbg_log::close();
break;
}
}
if (GetFileAttributesW(CurrentDirectory) == INVALID_FILE_ATTRIBUTES) {
MessageBoxA(NULL, "Couldn't find the configuration file(ColdClientLoader.ini).", "ColdClientLoader", MB_ICONERROR);
return 1; return 1;
} }
GetPrivateProfileStringW(L"SteamClient", L"SteamClient64Dll", L"", Client64Path, MAX_PATH, CurrentDirectory); std::wstring Client64Path = common_helpers::to_absolute(
GetPrivateProfileStringW(L"SteamClient", L"SteamClientDll", L"", ClientPath, MAX_PATH, CurrentDirectory); get_ini_value(L"SteamClient", L"SteamClient64Dll"),
GetPrivateProfileStringW(L"SteamClient", L"Exe", NULL, ExeFile, MAX_PATH, CurrentDirectory); pe_helpers::get_current_exe_path_w()
GetPrivateProfileStringW(L"SteamClient", L"ExeRunDir", NULL, ExeRunDir, MAX_PATH, CurrentDirectory); );
GetPrivateProfileStringW(L"SteamClient", L"ExeCommandLine", NULL, ExeCommandLine, 4096, CurrentDirectory);
GetPrivateProfileStringW(L"SteamClient", L"AppId", NULL, AppId, sizeof(AppId), CurrentDirectory);
if (AppId[0]) { std::wstring ClientPath = common_helpers::to_absolute(
SetEnvironmentVariableW(L"SteamAppId", AppId); get_ini_value(L"SteamClient", L"SteamClientDll"),
SetEnvironmentVariableW(L"SteamGameId", AppId); pe_helpers::get_current_exe_path_w()
SetEnvironmentVariableW(L"SteamOverlayGameId", AppId); );
std::wstring ExeFile = common_helpers::to_absolute(
get_ini_value(L"SteamClient", L"Exe"),
pe_helpers::get_current_exe_path_w()
);
std::wstring ExeRunDir = common_helpers::to_absolute(
get_ini_value(L"SteamClient", L"ExeRunDir"),
pe_helpers::get_current_exe_path_w()
);
std::wstring ExeCommandLine = get_ini_value(L"SteamClient", L"ExeCommandLine");
std::wstring AppId = get_ini_value(L"SteamClient", L"AppId");
// log everything
dbg_log::write(L"SteamClient64Dll: " + Client64Path);
dbg_log::write(L"SteamClient: " + ClientPath);
dbg_log::write(L"Exe: " + ExeFile);
dbg_log::write(L"ExeRunDir: " + ExeRunDir);
dbg_log::write(L"ExeCommandLine: " + ExeCommandLine);
dbg_log::write(L"AppId: " + AppId);
if (AppId.size() && AppId[0]) {
SetEnvironmentVariableW(L"SteamAppId", AppId.c_str());
SetEnvironmentVariableW(L"SteamGameId", AppId.c_str());
SetEnvironmentVariableW(L"SteamOverlayGameId", AppId.c_str());
} else { } else {
dbg_log::write("You forgot to set the AppId");
MessageBoxA(NULL, "You forgot to set the AppId.", "ColdClientLoader", MB_ICONERROR); MessageBoxA(NULL, "You forgot to set the AppId.", "ColdClientLoader", MB_ICONERROR);
return 1; return 1;
} }
WCHAR TMP[MAX_PATH] = { 0 }; if (!common_helpers::file_exist(Client64Path)) {
if (!IsNotRelativePathOrRemoveFileName(Client64Path, false)) { dbg_log::write("Couldn't find the requested SteamClient64Dll");
lstrcpyW(TMP, Client64Path);
SecureZeroMemory(Client64Path, sizeof(Client64Path));
GetFullPathNameW(TMP, MAX_PATH, Client64Path, NULL);
}
if (!IsNotRelativePathOrRemoveFileName(ClientPath, false)) {
lstrcpyW(TMP, ClientPath);
SecureZeroMemory(ClientPath, sizeof(ClientPath));
GetFullPathNameW(TMP, MAX_PATH, ClientPath, NULL);
}
if (!IsNotRelativePathOrRemoveFileName(ExeFile, false)) {
lstrcpyW(TMP, ExeFile);
SecureZeroMemory(ExeFile, sizeof(ExeFile));
GetFullPathNameW(TMP, MAX_PATH, ExeFile, NULL);
}
if (!IsNotRelativePathOrRemoveFileName(ExeRunDir, false)) {
lstrcpyW(TMP, ExeRunDir);
SecureZeroMemory(ExeRunDir, sizeof(ExeRunDir));
GetFullPathNameW(TMP, MAX_PATH, ExeRunDir, NULL);
}
if (GetFileAttributesW(Client64Path) == INVALID_FILE_ATTRIBUTES) {
MessageBoxA(NULL, "Couldn't find the requested SteamClient64Dll.", "ColdClientLoader", MB_ICONERROR); MessageBoxA(NULL, "Couldn't find the requested SteamClient64Dll.", "ColdClientLoader", MB_ICONERROR);
dbg_log::close();
return 1; return 1;
} }
if (GetFileAttributesW(ClientPath) == INVALID_FILE_ATTRIBUTES) { if (!common_helpers::file_exist(ClientPath)) {
dbg_log::write("Couldn't find the requested SteamClientDll");
MessageBoxA(NULL, "Couldn't find the requested SteamClientDll.", "ColdClientLoader", MB_ICONERROR); MessageBoxA(NULL, "Couldn't find the requested SteamClientDll.", "ColdClientLoader", MB_ICONERROR);
dbg_log::close();
return 1; return 1;
} }
if (GetFileAttributesW(ExeFile) == INVALID_FILE_ATTRIBUTES) { if (!common_helpers::file_exist(ExeFile)) {
dbg_log::write("Couldn't find the requested Exe file");
MessageBoxA(NULL, "Couldn't find the requested Exe file.", "ColdClientLoader", MB_ICONERROR); MessageBoxA(NULL, "Couldn't find the requested Exe file.", "ColdClientLoader", MB_ICONERROR);
dbg_log::close();
return 1;
}
if (!common_helpers::dir_exist(ExeRunDir)) {
dbg_log::write("Couldn't find the requested Exe run dir");
MessageBoxA(NULL, "Couldn't find the requested Exe run dir.", "ColdClientLoader", MB_ICONERROR);
dbg_log::close();
return 1; return 1;
} }
@ -110,10 +121,10 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
bool orig_steam = false; bool orig_steam = false;
DWORD keyType = REG_SZ; DWORD keyType = REG_SZ;
WCHAR OrgSteamCDir[MAX_PATH] = { 0 }; WCHAR OrgSteamCDir[8192] = { 0 };
WCHAR OrgSteamCDir64[MAX_PATH] = { 0 }; WCHAR OrgSteamCDir64[8192] = { 0 };
DWORD Size1 = MAX_PATH; DWORD Size1 = _countof(OrgSteamCDir);
DWORD Size2 = MAX_PATH; DWORD Size2 = _countof(OrgSteamCDir64);
if (RegOpenKeyExW(HKEY_CURRENT_USER, L"Software\\Valve\\Steam\\ActiveProcess", 0, KEY_ALL_ACCESS, &Registrykey) == ERROR_SUCCESS) if (RegOpenKeyExW(HKEY_CURRENT_USER, L"Software\\Valve\\Steam\\ActiveProcess", 0, KEY_ALL_ACCESS, &Registrykey) == ERROR_SUCCESS)
{ {
orig_steam = true; orig_steam = true;
@ -124,74 +135,39 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
if (RegCreateKeyExW(HKEY_CURRENT_USER, L"Software\\Valve\\Steam\\ActiveProcess", 0, 0, REG_OPTION_NON_VOLATILE, if (RegCreateKeyExW(HKEY_CURRENT_USER, L"Software\\Valve\\Steam\\ActiveProcess", 0, 0, REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS, NULL, &Registrykey, NULL) != ERROR_SUCCESS) KEY_ALL_ACCESS, NULL, &Registrykey, NULL) != ERROR_SUCCESS)
{ {
dbg_log::write("Unable to patch Steam process informations on the Windows registry (ActiveProcess), error = " + std::to_string(GetLastError()));
MessageBoxA(NULL, "Unable to patch Steam process informations on the Windows registry.", "ColdClientLoader", MB_ICONERROR); MessageBoxA(NULL, "Unable to patch Steam process informations on the Windows registry.", "ColdClientLoader", MB_ICONERROR);
dbg_log::close();
return 1; return 1;
} }
} }
// Set values to Windows registry. // Set values to Windows registry.
RegSetValueExA(Registrykey, "ActiveUser", NULL, REG_DWORD, (LPBYTE)& UserId, sizeof(DWORD)); RegSetValueExA(Registrykey, "ActiveUser", NULL, REG_DWORD, (const BYTE *)&UserId, sizeof(DWORD));
RegSetValueExA(Registrykey, "pid", NULL, REG_DWORD, (LPBYTE)& ProcessID, sizeof(DWORD)); RegSetValueExA(Registrykey, "pid", NULL, REG_DWORD, (const BYTE *)&ProcessID, sizeof(DWORD));
RegSetValueExW(Registrykey, L"SteamClientDll", NULL, REG_SZ, (const BYTE *)ClientPath.c_str(), (ClientPath.size() + 1) * sizeof(ClientPath[0]));
{ RegSetValueExW(Registrykey, L"SteamClientDll64", NULL, REG_SZ, (const BYTE *)Client64Path.c_str(), (Client64Path.size() + 1) * sizeof(Client64Path[0]));
// Before saving to the registry check again if the path was valid and if the file exist RegSetValueExA(Registrykey, "Universe", NULL, REG_SZ, (const BYTE *)STEAM_UNIVERSE, (DWORD)sizeof(STEAM_UNIVERSE));
if (GetFileAttributesW(ClientPath) != INVALID_FILE_ATTRIBUTES) {
RegSetValueExW(Registrykey, L"SteamClientDll", NULL, REG_SZ, (LPBYTE)ClientPath, (DWORD)(lstrlenW(ClientPath) * sizeof(WCHAR)) + 1);
}
else {
RegSetValueExW(Registrykey, L"SteamClientDll", NULL, REG_SZ, (LPBYTE)"", 0);
}
if (GetFileAttributesW(Client64Path) != INVALID_FILE_ATTRIBUTES) {
RegSetValueExW(Registrykey, L"SteamClientDll64", NULL, REG_SZ, (LPBYTE)Client64Path, (DWORD)(lstrlenW(Client64Path) * sizeof(WCHAR)) + 1);
}
else {
RegSetValueExW(Registrykey, L"SteamClientDll64", NULL, REG_SZ, (LPBYTE)"", 0);
}
}
RegSetValueExA(Registrykey, "Universe", NULL, REG_SZ, (LPBYTE)"Public", (DWORD)lstrlenA("Public") + 1);
// Close the HKEY Handle. // Close the HKEY Handle.
RegCloseKey(Registrykey); RegCloseKey(Registrykey);
// dll to inject // dll to inject
bool inject_extra_dll = false; bool inject_extra_dll = false;
std::wstring extra_dll(8192, L'\0'); std::wstring extra_dll = common_helpers::to_absolute(
{ get_ini_value(L"Extra", L"InjectDll"),
auto read_chars = GetPrivateProfileStringW(L"Extra", L"InjectDll", L"", &extra_dll[0], extra_dll.size(), CurrentDirectory); pe_helpers::get_current_exe_path_w()
if (extra_dll[0]) { );
extra_dll = extra_dll.substr(0, read_chars);
} else {
extra_dll.clear();
}
if (extra_dll.size()) { if (extra_dll.size()) {
if (!IsNotRelativePathOrRemoveFileName(&extra_dll[0], false)) { dbg_log::write(L"InjectDll: " + extra_dll);
std::wstring tmp = extra_dll; if (!common_helpers::file_exist(extra_dll)) {
read_chars = GetFullPathNameW(tmp.c_str(), extra_dll.size(), &extra_dll[0], NULL); dbg_log::write("Couldn't find the requested dll to inject");
if (!read_chars) {
MessageBoxA(NULL, "Unable to get full path of dll to inject.", "ColdClientLoader", MB_ICONERROR);
return 1;
}
if (read_chars >= extra_dll.size()) {
extra_dll.resize(read_chars);
read_chars = GetFullPathNameW(tmp.c_str(), extra_dll.size(), &extra_dll[0], NULL);
if (!read_chars) {
MessageBoxA(NULL, "Unable to get full path of dll to inject after resizing buffer.", "ColdClientLoader", MB_ICONERROR);
return 1;
}
}
extra_dll = extra_dll.substr(0, read_chars);
}
if (GetFileAttributesW(extra_dll.c_str()) == INVALID_FILE_ATTRIBUTES) {
MessageBoxA(NULL, "Couldn't find the requested dll to inject.", "ColdClientLoader", MB_ICONERROR); MessageBoxA(NULL, "Couldn't find the requested dll to inject.", "ColdClientLoader", MB_ICONERROR);
dbg_log::close();
return 1; return 1;
} }
inject_extra_dll = true; inject_extra_dll = true;
} }
}
// spawn the exe // spawn the exe
STARTUPINFOW info = { 0 }; STARTUPINFOW info = { 0 };
@ -202,10 +178,12 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
SecureZeroMemory(&processInfo, sizeof(processInfo)); SecureZeroMemory(&processInfo, sizeof(processInfo));
WCHAR CommandLine[16384] = { 0 }; WCHAR CommandLine[16384] = { 0 };
_snwprintf(CommandLine, _countof(CommandLine), L"\"%ls\" %ls %ls", ExeFile, ExeCommandLine, lpCmdLine); _snwprintf(CommandLine, _countof(CommandLine), L"\"%ls\" %ls %ls", ExeFile.c_str(), ExeCommandLine.c_str(), lpCmdLine);
if (!ExeFile[0] || !CreateProcessW(ExeFile, CommandLine, NULL, NULL, TRUE, CREATE_SUSPENDED, NULL, ExeRunDir, &info, &processInfo)) if (!CreateProcessW(ExeFile.c_str(), CommandLine, NULL, NULL, TRUE, CREATE_SUSPENDED, NULL, ExeRunDir.c_str(), &info, &processInfo))
{ {
dbg_log::write("Unable to load the requested EXE file");
MessageBoxA(NULL, "Unable to load the requested EXE file.", "ColdClientLoader", MB_ICONERROR); MessageBoxA(NULL, "Unable to load the requested EXE file.", "ColdClientLoader", MB_ICONERROR);
dbg_log::close();
return 1; return 1;
} }
@ -219,30 +197,26 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
std::string(err_inject) + "\n" + std::string(err_inject) + "\n" +
pe_helpers::get_err_string(code) + "\n" + pe_helpers::get_err_string(code) + "\n" +
"Error code = " + std::to_string(code) + "\n"; "Error code = " + std::to_string(code) + "\n";
dbg_log::write(err_full);
MessageBoxA(NULL, err_full.c_str(), "ColdClientLoader", MB_ICONERROR); MessageBoxA(NULL, err_full.c_str(), "ColdClientLoader", MB_ICONERROR);
dbg_log::close();
return 1; return 1;
} }
} }
bool run_exe = true; bool run_exe = true;
#ifndef EMU_RELEASE_BUILD #ifndef EMU_RELEASE_BUILD
{ std::wstring resume_by_dbg = get_ini_value(L"Debug", L"ResumeByDebugger");
std::wstring dbg_file(50, L'\0'); dbg_log::write(L"Debug::ResumeByDebugger: " + resume_by_dbg);
auto read_chars = GetPrivateProfileStringW(L"Debug", L"ResumeByDebugger", L"", &dbg_file[0], dbg_file.size(), CurrentDirectory); for (auto &c : resume_by_dbg) {
if (dbg_file[0]) {
dbg_file = dbg_file.substr(0, read_chars);
} else {
dbg_file.clear();
}
for (auto &c : dbg_file) {
c = (wchar_t)std::tolower((int)c); c = (wchar_t)std::tolower((int)c);
} }
if (dbg_file == L"1" || dbg_file == L"y" || dbg_file == L"yes" || dbg_file == L"true") { if (resume_by_dbg == L"1" || resume_by_dbg == L"y" || resume_by_dbg == L"yes" || resume_by_dbg == L"true") {
run_exe = false; run_exe = false;
std::string msg = "Attach a debugger now to PID " + std::to_string(processInfo.dwProcessId) + " and resume its main thread"; std::string msg = "Attach a debugger now to PID " + std::to_string(processInfo.dwProcessId) + " and resume its main thread";
dbg_log::write(msg);
MessageBoxA(NULL, msg.c_str(), "ColdClientLoader", MB_OK); MessageBoxA(NULL, msg.c_str(), "ColdClientLoader", MB_OK);
} }
}
#endif #endif
// run // run
@ -264,8 +238,11 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
// Close the HKEY Handle. // Close the HKEY Handle.
RegCloseKey(Registrykey); RegCloseKey(Registrykey);
} else {
dbg_log::write("Unable to restore the original Steam process informations in the Windows registry, error = " + std::to_string(GetLastError()));
} }
} }
dbg_log::close();
return 0; return 0;
} }