[WIP] Linux support

Author: acidicoala

CMakeLists.txt

@@ -7,8 +7,6 @@ include(KoalaBox/cmake/KoalaBox.cmake)
 add_subdirectory(KoalaBox)
 add_subdirectory(tools)
 
-configure_build_config(extra_build_config)
-
 set(SMOKE_API_STATIC_SOURCES
     static/smoke_api/interfaces/steam_apps.hpp
     static/smoke_api/interfaces/steam_apps.cpp
@@ -61,6 +59,8 @@ else()
 endif()
 set_32_and_64(SMOKE_API_FILENAME smoke_api32 smoke_api64)
 
+configure_build_config(extra_build_config)
+
 ### SmokeAPI interface
 
 add_library(SmokeAPI_common INTERFACE)
@@ -109,13 +109,13 @@ if(WIN32)
         DLL_FILES_GLOB "C:/Windows/System32/version.dll"
     )
 else()
-    configure_linker_exports(
-        TARGET SmokeAPI
-        HEADER_NAME "libsteam_api_exports.cpp"
-        FORWARDED_DLL "${STEAM_API_MODULE}_o.so"
-        DLL_FILES_GLOB "${CMAKE_CURRENT_SOURCE_DIR}/res/steamworks/*/binaries/${LINUX_DIR}/${STEAM_API_MODULE}.so"
-        INPUT_SOURCES_DIR ""
-    )
+#    configure_linker_exports(
+#        TARGET SmokeAPI
+#        HEADER_NAME "libsteam_api_exports.cpp"
+#        FORWARDED_DLL "${STEAM_API_MODULE}_o.so"
+#        DLL_FILES_GLOB "${CMAKE_CURRENT_SOURCE_DIR}/res/steamworks/*/binaries/${LINUX_DIR}/${STEAM_API_MODULE}.so"
+#        INPUT_SOURCES_DIR ""
+#    )
 endif()
 
 ## https://github.com/batterycenter/embed

KoalaBox

@@ -1,4 +1,4 @@
 #pragma once
 
-#define STEAMAPI_DLL    "${STEAMAPI_DLL}"
+#define STEAM_API_MODULE    "${STEAM_API_MODULE}"
 #define STEAMCLIENT_DLL "${STEAMCLIENT_DLL}"

res/extra_build_config.gen.h

@@ -2,11 +2,11 @@
 
 #include "smoke_api/smoke_api.hpp"
 
-extern "C" void __attribute__((constructor)) on_loaded() {
+extern "C" void __attribute__((constructor)) init() {
     // On linux we don't automatically get current module handle,
-    // hence we get it manually
+    // hence we find it manually
     Dl_info info;
-    if(dladdr(reinterpret_cast<void*>(&on_loaded), &info) && info.dli_fname) {
+    if(dladdr(reinterpret_cast<void*>(&init), &info) && info.dli_fname) {
         void* handle = dlopen(info.dli_fname, RTLD_NOW | RTLD_NOLOAD);
         smoke_api::init(handle);
     } else {
@@ -15,6 +15,6 @@ extern "C" void __attribute__((constructor)) on_loaded() {
     }
 }
 
-extern "C" void __attribute__((destructor)) on_unloaded() {
+extern "C" void __attribute__((destructor)) fini() {
     smoke_api::shutdown();
 }

src/main_linux.cpp

@@ -64,9 +64,9 @@ namespace {
     bool on_steamclient_loaded(const HMODULE steamclient_handle) {
         auto* const steamapi_handle = original_steamapi_handle
                                           ? original_steamapi_handle
-                                          : kb::module::get_library_handle(TEXT(STEAMAPI_DLL));
+                                          : kb::module::get_library_handle(TEXT(STEAM_API_MODULE));
         if(!steamapi_handle) {
-            LOG_ERROR("{} -> {} is not loaded", __func__, STEAMAPI_DLL);
+            LOG_ERROR("{} -> {} is not loaded", __func__, STEAM_API_MODULE);
             return true;
         }
 
@@ -75,7 +75,7 @@ namespace {
         const auto steamclient_versions = find_steamclient_versions(steamapi_handle);
         for(const auto& steamclient_version : steamclient_versions) {
             if(CreateInterface$(steamclient_version.c_str(), nullptr)) {
-                // TODO: This is not true when running under Proton.
+                // TODO: This is not true when running under Proton or native Linux.
                 // Even before initialization, an interface will be returned,
                 // but GetISteamGenericInterface will still fail.
                 LOG_WARN("'{}' was already initialized. SmokeAPI might not work as expected.", steamclient_version);
@@ -119,20 +119,20 @@ namespace smoke_api {
             // We need to hook functions in either mode
             kb::hook::init(true);
 
-            if(kb::hook::is_hook_mode(module_handle, STEAMAPI_DLL)) {
+            if(kb::hook::is_hook_mode(module_handle, STEAM_API_MODULE)) {
                 LOG_INFO("Detected hook mode");
 
                 start_dll_listener();
             } else {
                 LOG_INFO("Detected proxy mode");
 
+                start_dll_listener();
+
                 const auto self_path = kb::paths::get_self_dir();
                 original_steamapi_handle = kb::loader::load_original_library(
                     self_path,
-                    STEAMAPI_DLL
+                    STEAM_API_MODULE
                 );
-
-                start_dll_listener();
             }
 
             LOG_INFO("Initialization complete");

src/smoke_api/smoke_api.cpp

@@ -206,10 +206,10 @@ namespace steam_interfaces {
             // Remove steam client map since we don't want to hook its methods
             virtual_hook_map.erase(STEAM_CLIENT);
 
-            // Map remaining virtual hook map to a set of keys
+            // Map virtual hook map to a set of keys
             const auto prefixes = std::views::keys(virtual_hook_map) | std::ranges::to<std::set>();
 
-            // Prepare HSteamPipe and HSteamUser
+
             const auto CreateInterface$ = KB_MOD_GET_FUNC(steamclient_handle, CreateInterface);
             const auto* const THIS = CreateInterface$(steam_client_interface_version.c_str(), nullptr);
             hook_virtuals(THIS, steam_client_interface_version);