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Removed steam_api hooking

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acidicoala
2022-12-29 21:44:02 +03:00
parent 8cba428c0f
commit 941d5d7d8c
6 changed files with 70 additions and 69 deletions
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124
src/smoke_api/smoke_api.cpp
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@@ -24,6 +24,65 @@ namespace smoke_api {
Path self_directory;
void init_koalageddon_mode() {
#ifndef _WIN64
logger->info("🐨 Detected Koalageddon mode 💥");
dll_monitor::init({VSTDLIB_DLL, STEAMCLIENT_DLL}, [](const HMODULE& library, const String& name) {
original_library = library; // TODO: Is this necessary?
if (name == VSTDLIB_DLL) {
// Family Sharing functions
DETOUR(Coroutine_Create)
} else if (name == STEAMCLIENT_DLL) {
// Unlocking functions
// TODO: Un-hardcode the pattern
const String pattern("55 8B EC 8B ?? ?? ?? ?? ?? 81 EC ?? ?? ?? ?? 53 FF 15");
auto Log_Interface_address = (FunctionAddress) patcher::find_pattern_address(
win_util::get_module_info(library), "Log_Interface", pattern
);
if (Log_Interface_address) {
DETOUR_EX(Log_Interface, Log_Interface_address)
}
}
});
#endif
}
void init_proxy_mode() {
logger->info("🔀 Detected proxy mode");
original_library = loader::load_original_library(self_directory, ORIGINAL_DLL);
}
void init_hook_mode() {
logger->info("🪝 Detected hook mode");
dll_monitor::init(STEAMCLIENT_DLL, [](const HMODULE& library) {
original_library = library;
DETOUR(CreateInterface)
});
// Hooking steam_api has show itself to be less desirable than steamclient
// for the reasons outlined below:
//
// Calling original in flat functions will actually call the hooked functions
// because the original function redirects the execution to a function taken
// from self pointer, which would have been hooked by SteamInternal_*Interface
// functions.
//
// Furthermore, turns out that many flat functions share the same body,
// which looks like the following snippet:
//
// mov rax, qword ptr ds:[rcx]
// jmp qword ptr ds:[rax+immediate]
//
// This means that we end up inadvertently hooking unintended functions.
// Given that hooking steam_api has no apparent benefits, but has inherent flaws,
// the support for it has been dropped from this project.
}
void init(HMODULE self_module) {
try {
DisableThreadLibraryCalls(self_module);
@@ -51,68 +110,13 @@ namespace smoke_api {
if (is_hook_mode) {
hook::init(true);
if (util::strings_are_equal(exe_name, "steam.exe")) {
#ifndef _WIN64
logger->info("🐨 Detected Koalageddon mode 💥");
dll_monitor::init({VSTDLIB_DLL, STEAMCLIENT_DLL}, [](const HMODULE& library, const String& name) {
original_library = library; // TODO: Is this necessary?
if (name == VSTDLIB_DLL) {
// Family Sharing functions
DETOUR(Coroutine_Create)
} else if (name == STEAMCLIENT_DLL) {
// Unlocking functions
// TODO: Un-hardcode the pattern
const String pattern("55 8B EC 8B ?? ?? ?? ?? ?? 81 EC ?? ?? ?? ?? 53 FF 15");
auto Log_Interface_address = (FunctionAddress) patcher::find_pattern_address(
win_util::get_module_info(library), "Log_Interface", pattern
);
if (Log_Interface_address) {
DETOUR_EX(Log_Interface, Log_Interface_address)
}
}
});
#endif
} else if (config.hook_steamclient) { // target steamclient(64).dll
logger->info("🪝 Detected hook mode for SteamClient");
dll_monitor::init(STEAMCLIENT_DLL, [](const HMODULE& library) {
original_library = library;
DETOUR(CreateInterface)
});
} else { // target steam_api.dll
logger->info("🪝 Detected hook mode for Steam_API");
dll_monitor::init(ORIGINAL_DLL, [](const HMODULE& library) {
original_library = library;
DETOUR(SteamInternal_FindOrCreateUserInterface)
DETOUR(SteamInternal_CreateInterface)
DETOUR(SteamApps)
DETOUR(SteamClient)
DETOUR(SteamUser)
DETOUR(SteamAPI_ISteamApps_BIsSubscribedApp)
DETOUR(SteamAPI_ISteamApps_BIsDlcInstalled)
DETOUR(SteamAPI_ISteamApps_GetDLCCount)
DETOUR(SteamAPI_ISteamApps_BGetDLCDataByIndex)
DETOUR(SteamAPI_ISteamClient_GetISteamGenericInterface)
DETOUR(SteamAPI_ISteamInventory_GetResultStatus)
DETOUR(SteamAPI_ISteamInventory_GetResultItems)
DETOUR(SteamAPI_ISteamInventory_GetResultItemProperty)
DETOUR(SteamAPI_ISteamInventory_CheckResultSteamID)
DETOUR(SteamAPI_ISteamInventory_GetAllItems)
DETOUR(SteamAPI_ISteamInventory_GetItemsByID)
DETOUR(SteamAPI_ISteamInventory_GetItemDefinitionIDs)
});
if (util::strings_are_equal(exe_name, "steam.exe") && !util::is_x64()) {
init_koalageddon_mode();
} else {
init_hook_mode();
}
} else {
logger->info("🔀 Detected proxy mode for Steam_API");
original_library = loader::load_original_library(self_directory, ORIGINAL_DLL);
init_proxy_mode();
}
logger->info("🚀 Initialization complete");
} catch (const Exception& ex) {

4
src/smoke_api/smoke_api.hpp
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@@ -27,7 +27,6 @@ namespace smoke_api {
struct Config {
uint32_t $version = 1;
bool logging = false;
bool hook_steamclient = true;
bool unlock_all = true;
Set<uint32_t> override;
Vector<uint32_t> dlc_ids;
@@ -35,10 +34,9 @@ namespace smoke_api {
Vector<uint32_t> inventory_items;
NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(
Config, $version,
Config, $version, // NOLINT(misc-const-correctness)
logging,
unlock_all,
hook_steamclient,
override,
dlc_ids,
auto_inject_inventory,

6
src/steam_impl/steam_apps.cpp
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@@ -159,18 +159,18 @@ namespace steam_apps {
return count;
};
if (app_id) {
if (app_id != 0) {
logger->debug("{} -> App ID: {}", function_name, app_id);
}
// Compute count only once // FIXME: This doesn't work in Koalageddon mode
// Compute count only once
// FIXME: This doesn't work in Koalageddon mode
original_dlc_count = original_function();
logger->debug("{} -> Original DLC count: {}", function_name, original_dlc_count);
const auto injected_count = static_cast<int>(config.dlc_ids.size());
logger->debug("{} -> Injected DLC count: {}", function_name, injected_count);
if (original_dlc_count < max_dlc) {
return total_count(original_dlc_count + injected_count);
}

1
src/steamclient_virtuals/client_user.cpp
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@@ -3,6 +3,7 @@
using namespace smoke_api;
// TODO: Implement?
VIRTUAL(bool) IClientUser_IsSubscribedApp(PARAMS(AppId_t app_id)) { // NOLINT(misc-unused-parameters)
return steam_apps::IsDlcUnlocked(__func__, 0, app_id);
}