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#include "pch.h"
#include "loader.h"
#include <shlwapi.h>
#include <filesystem>
HINSTANCE hLThis = 0;
FARPROC p[857];
HINSTANCE hL = 0;
bool GetExePathWide(wchar_t* dest, DWORD destSize)
{
if (!dest)
return NULL;
if (destSize < MAX_PATH)
return NULL;
DWORD length = GetModuleFileNameW(NULL, dest, destSize);
return length && PathRemoveFileSpecW(dest);
}
wchar_t exePath[4096];
wchar_t buffer1[8192];
wchar_t buffer2[12288];
BOOL WINAPI DllMain(HINSTANCE hInst, DWORD reason, LPVOID)
{
if (reason == DLL_PROCESS_ATTACH)
{
hLThis = hInst;
if (!GetExePathWide(exePath, 4096))
{
MessageBoxA(
GetForegroundWindow(),
"Failed getting game directory.\nThe game cannot continue and has to exit.",
"Northstar Wsock32 Proxy Error",
0);
return true;
}
SetCurrentDirectoryW(exePath);
if (!ProvisionNorthstar()) // does not call InitialiseNorthstar yet, will do it on LauncherMain hook
return true;
// copy the original library for system to our local directory, with changed name so that we can load it
swprintf_s(buffer1, L"%s\\bin\\x64_retail\\wsock32.org.dll", exePath);
GetSystemDirectoryW(buffer2, 4096);
swprintf_s(buffer2, L"%s\\wsock32.dll", buffer2);
try
{
std::filesystem::copy_file(buffer2, buffer1);
}
catch (const std::exception& e1)
{
if (!std::filesystem::exists(buffer1))
{
// fallback by copying to temp dir...
// because apparently games installed by EA Desktop app don't have write permissions in their directories
auto temp_dir = std::filesystem::temp_directory_path() / L"wsock32.org.dll";
try
{
std::filesystem::copy_file(buffer2, temp_dir);
}
catch (const std::exception& e2)
{
if (!std::filesystem::exists(temp_dir))
{
swprintf_s(
buffer2,
L"Failed copying wsock32.dll from system32 to \"%s\"\n\n%S\n\nFurthermore, we failed copying wsock32.dll into "
L"temporary directory at \"%s\"\n\n%S",
buffer1,
e1.what(),
temp_dir.c_str(),
e2.what());
MessageBoxW(GetForegroundWindow(), buffer2, L"Northstar Wsock32 Proxy Error", 0);
return false;
}
}
swprintf_s(buffer1, L"%s", temp_dir.c_str());
}
}
hL = LoadLibraryExW(buffer1, 0, LOAD_WITH_ALTERED_SEARCH_PATH);
if (!hL)
{
LibraryLoadError(GetLastError(), L"wsock32.org.dll", buffer1);
return false;
}
// load the functions to proxy
// it's only some of them, because in case of wsock32 most of the functions can actually be natively redirected
// (see wsock32.def and https://source.winehq.org/WineAPI/wsock32.html)
p[1] = GetProcAddress(hL, "EnumProtocolsA");
p[2] = GetProcAddress(hL, "EnumProtocolsW");
p[4] = GetProcAddress(hL, "GetAddressByNameA");
p[5] = GetProcAddress(hL, "GetAddressByNameW");
p[17] = GetProcAddress(hL, "WEP");
p[30] = GetProcAddress(hL, "WSARecvEx");
p[36] = GetProcAddress(hL, "__WSAFDIsSet");
p[45] = GetProcAddress(hL, "getnetbyname");
p[52] = GetProcAddress(hL, "getsockopt");
p[56] = GetProcAddress(hL, "inet_network");
p[67] = GetProcAddress(hL, "s_perror");
p[72] = GetProcAddress(hL, "setsockopt");
}
if (reason == DLL_PROCESS_DETACH)
{
FreeLibrary(hL);
return true;
}
return true;
}
extern "C"
{
FARPROC PA = NULL;
int RunASM();
void PROXY_EnumProtocolsA()
{
PA = p[1];
RunASM();
}
void PROXY_EnumProtocolsW()
{
PA = p[2];
RunASM();
}
void PROXY_GetAddressByNameA()
{
PA = p[4];
RunASM();
}
void PROXY_GetAddressByNameW()
{
PA = p[5];
RunASM();
}
void PROXY_WEP()
{
PA = p[17];
RunASM();
}
void PROXY_WSARecvEx()
{
PA = p[30];
RunASM();
}
void PROXY___WSAFDIsSet()
{
PA = p[36];
RunASM();
}
void PROXY_getnetbyname()
{
PA = p[45];
RunASM();
}
void PROXY_getsockopt()
{
PA = p[52];
RunASM();
}
void PROXY_inet_network()
{
PA = p[56];
RunASM();
}
void PROXY_s_perror()
{
PA = p[67];
RunASM();
}
void PROXY_setsockopt()
{
PA = p[72];
RunASM();
}
}
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