From ad1578f5567620f333375b15620968d55637e4de Mon Sep 17 00:00:00 2001
From: acidicoala <67734819+acidicoala@users.noreply.github.com>
Date: Mon, 9 Jan 2023 08:02:57 +0300
Subject: [PATCH] Refactor

---
 .idea/codeStyles/Project.xml                  |   2 +
 CMakeLists.txt                                |  35 +++---
 KoalaBox                                      |   2 +-
 res/SmokeAPI.json                             |  18 ++--
 src/core/api.cpp                              |  48 +++++++++
 src/core/api.hpp                              |  11 ++
 src/core/macros.hpp                           |  58 ----------
 src/core/types.hpp                            |  65 ++++++++++-
 src/koalageddon/{cache.cpp => kg_cache.cpp}   |   4 +-
 src/koalageddon/{cache.hpp => kg_cache.hpp}   |   4 +-
 src/koalageddon/koalageddon.cpp               |  21 ++--
 src/koalageddon/koalageddon.hpp               |  24 ++++-
 src/koalageddon/steamclient.hpp               |   7 --
 .../steamclient}/client_app_manager.cpp       |   3 -
 .../steamclient}/client_apps.cpp              |   4 +-
 .../steamclient}/client_inventory.cpp         |   4 +-
 .../steamclient}/client_user.cpp              |   2 +-
 .../{ => steamclient}/steamclient.cpp         |  33 +++---
 src/koalageddon/steamclient/steamclient.hpp   |  33 ++++++
 src/koalageddon/types.hpp                     |  26 -----
 src/koalageddon/vstdlib.cpp                   |   1 -
 src/koalageddon/vstdlib.hpp                   |   1 -
 src/{core => smoke_api}/config.cpp            |   4 +-
 src/{core => smoke_api}/config.hpp            |   3 +-
 src/smoke_api/smoke_api.cpp                   |   4 +-
 src/steam_api_exports/steam_api_exports.hpp   |  35 ++++++
 src/steam_api_exports/steam_api_flat.cpp      |   6 +-
 src/steam_api_exports/steam_api_internal.cpp  |   6 +-
 .../steam_api_unversioned.cpp                 |  17 ++-
 src/steam_api_virtuals/isteamapps.cpp         |   2 +-
 src/steam_api_virtuals/isteamclient.cpp       |   2 +-
 src/steam_api_virtuals/isteaminventory.cpp    |   2 +-
 src/steam_api_virtuals/isteamuser.cpp         |   2 +-
 src/steam_api_virtuals/steam_api_virtuals.hpp |  31 ++++++
 src/steam_functions/steam_functions.hpp       | 102 ------------------
 src/steam_impl/steam_apps.cpp                 |  80 ++++----------
 src/steam_impl/steam_apps.hpp                 |   1 -
 src/steam_impl/steam_client.cpp               |   4 +-
 src/steam_impl/steam_client.hpp               |   2 +-
 .../steam_impl.cpp}                           |  29 ++---
 src/steam_impl/steam_impl.hpp                 |  11 ++
 src/steam_impl/steam_inventory.cpp            |   8 +-
 src/steam_impl/steam_user.cpp                 |   4 +-
 src/steamclient_exports/steamclient.cpp       |   1 -
 44 files changed, 380 insertions(+), 382 deletions(-)
 create mode 100644 src/core/api.cpp
 create mode 100644 src/core/api.hpp
 delete mode 100644 src/core/macros.hpp
 rename src/koalageddon/{cache.cpp => kg_cache.cpp} (92%)
 rename src/koalageddon/{cache.hpp => kg_cache.hpp} (67%)
 delete mode 100644 src/koalageddon/steamclient.hpp
 rename src/{steamclient_virtuals => koalageddon/steamclient}/client_app_manager.cpp (79%)
 rename src/{steamclient_virtuals => koalageddon/steamclient}/client_apps.cpp (93%)
 rename src/{steamclient_virtuals => koalageddon/steamclient}/client_inventory.cpp (97%)
 rename src/{steamclient_virtuals => koalageddon/steamclient}/client_user.cpp (85%)
 rename src/koalageddon/{ => steamclient}/steamclient.cpp (94%)
 create mode 100644 src/koalageddon/steamclient/steamclient.hpp
 delete mode 100644 src/koalageddon/types.hpp
 rename src/{core => smoke_api}/config.cpp (97%)
 rename src/{core => smoke_api}/config.hpp (97%)
 create mode 100644 src/steam_api_exports/steam_api_exports.hpp
 create mode 100644 src/steam_api_virtuals/steam_api_virtuals.hpp
 delete mode 100644 src/steam_functions/steam_functions.hpp
 rename src/{steam_functions/steam_functions.cpp => steam_impl/steam_impl.cpp} (89%)
 create mode 100644 src/steam_impl/steam_impl.hpp

diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
index 31071dd..1a62352 100644
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -35,6 +35,8 @@
       <option name="KEEP_FIRST_COLUMN_COMMENT" value="false" />
       <option name="BLANK_LINES_BEFORE_IMPORTS" value="0" />
       <option name="BLANK_LINES_AFTER_IMPORTS" value="0" />
+      <option name="BLANK_LINES_AROUND_CLASS" value="0" />
+      <option name="BLANK_LINES_AROUND_METHOD" value="0" />
       <option name="BLANK_LINES_AROUND_METHOD_IN_INTERFACE" value="0" />
       <option name="IF_BRACE_FORCE" value="3" />
       <option name="SOFT_MARGINS" value="120" />
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ebfd3b8..5975e23 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,19 +35,21 @@ configure_build_config(extra_build_config)
 
 set(
     SMOKE_API_SOURCES
-    src/core/config.cpp
-    src/core/config.hpp
+    src/core/api.cpp
+    src/core/api.hpp
     src/core/globals.cpp
     src/core/globals.hpp
-    src/core/macros.hpp
     src/core/paths.cpp
     src/core/paths.hpp
     src/core/types.cpp
     src/core/types.hpp
-    src/smoke_api/smoke_api.cpp
-    src/smoke_api/smoke_api.hpp
     src/smoke_api/app_cache.cpp
     src/smoke_api/app_cache.hpp
+    src/smoke_api/config.cpp
+    src/smoke_api/config.hpp
+    src/smoke_api/smoke_api.cpp
+    src/smoke_api/smoke_api.hpp
+    src/steam_api_exports/steam_api_exports.hpp
     src/steam_api_exports/steam_api_flat.cpp
     src/steam_api_exports/steam_api_internal.cpp
     src/steam_api_exports/steam_api_unversioned.cpp
@@ -55,6 +57,7 @@ set(
     src/steam_api_virtuals/isteamclient.cpp
     src/steam_api_virtuals/isteaminventory.cpp
     src/steam_api_virtuals/isteamuser.cpp
+    src/steam_api_virtuals/steam_api_virtuals.hpp
     src/steam_impl/steam_apps.cpp
     src/steam_impl/steam_apps.hpp
     src/steam_impl/steam_client.cpp
@@ -63,8 +66,8 @@ set(
     src/steam_impl/steam_inventory.hpp
     src/steam_impl/steam_user.cpp
     src/steam_impl/steam_user.hpp
-    src/steam_functions/steam_functions.cpp
-    src/steam_functions/steam_functions.hpp
+    src/steam_impl/steam_impl.cpp
+    src/steam_impl/steam_impl.hpp
     src/steamclient_exports/steamclient.cpp
     src/main.cpp
     ${GENERATED_LINKER_EXPORTS}
@@ -74,20 +77,18 @@ set(
 if (CMAKE_SIZEOF_VOID_P EQUAL 4)
     set(
         SMOKE_API_SOURCES ${SMOKE_API_SOURCES}
-        src/koalageddon/cache.hpp
-        src/koalageddon/cache.cpp
+        src/koalageddon/kg_cache.hpp
+        src/koalageddon/kg_cache.cpp
         src/koalageddon/koalageddon.hpp
         src/koalageddon/koalageddon.cpp
-        src/koalageddon/steamclient.cpp
-        src/koalageddon/steamclient.hpp
-        src/koalageddon/types.hpp
         src/koalageddon/vstdlib.cpp
         src/koalageddon/vstdlib.hpp
-        # TODO: Move to koalageddon package
-        src/steamclient_virtuals/client_app_manager.cpp
-        src/steamclient_virtuals/client_apps.cpp
-        src/steamclient_virtuals/client_inventory.cpp
-        src/steamclient_virtuals/client_user.cpp
+        src/koalageddon/steamclient/client_app_manager.cpp
+        src/koalageddon/steamclient/client_apps.cpp
+        src/koalageddon/steamclient/client_inventory.cpp
+        src/koalageddon/steamclient/client_user.cpp
+        src/koalageddon/steamclient/steamclient.cpp
+        src/koalageddon/steamclient/steamclient.hpp
     )
 endif ()
 
diff --git a/KoalaBox b/KoalaBox
index 960ad86..2e68320 160000
--- a/KoalaBox
+++ b/KoalaBox
@@ -1 +1 @@
-Subproject commit 960ad86f2c9327165c103be812af1e94930bd555
+Subproject commit 2e6832007f2f2ba7c09141597ee97680febd77a2
diff --git a/res/SmokeAPI.json b/res/SmokeAPI.json
index 68e75ac..deb8151 100644
--- a/res/SmokeAPI.json
+++ b/res/SmokeAPI.json
@@ -14,16 +14,14 @@
     "16384": "original"
   },
   "extra_dlcs": {
-    "extra_dlcs": {
-      "1234": {
-        "dlcs": {
-          "56789": "Example DLC 1"
-        }
-      },
-      "4321": {
-        "dlcs": {
-          "98765": "Example DLC 2"
-        }
+    "1234": {
+      "dlcs": {
+        "56789": "Example DLC 1"
+      }
+    },
+    "4321": {
+      "dlcs": {
+        "98765": "Example DLC 2"
       }
     }
   },
diff --git a/src/core/api.cpp b/src/core/api.cpp
new file mode 100644
index 0000000..11bfc9e
--- /dev/null
+++ b/src/core/api.cpp
@@ -0,0 +1,48 @@
+#include <core/api.hpp>
+#include <koalabox/logger.hpp>
+#include <koalabox/http_client.hpp>
+
+namespace api {
+
+    struct SteamResponse {
+        uint32_t success = 0;
+        Vector<DLC> dlcs;
+
+        NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(SteamResponse, success, dlcs) // NOLINT(misc-const-correctness)
+    };
+
+    std::optional<Vector<DLC>> fetch_dlcs_from_github(AppId_t app_id) noexcept {
+        try {
+            const auto* url =
+                "https://raw.githubusercontent.com/acidicoala/public-entitlements/main/steam/v2/dlc.json";
+            const auto json = koalabox::http_client::fetch_json(url);
+            const auto response = json.get<AppDlcNameMap>();
+
+            return DLC::get_dlcs_from_apps(response, app_id);
+        } catch (const Json::exception& e) {
+            LOG_ERROR("Failed to fetch dlc list from GitHub: {}", e.what())
+            return std::nullopt;
+        }
+    }
+
+    std::optional<Vector<DLC>> fetch_dlcs_from_steam(AppId_t app_id) noexcept {
+        try {
+            const auto url = fmt::format("https://store.steampowered.com/dlc/{}/ajaxgetdlclist", app_id);
+            const auto json = koalabox::http_client::fetch_json(url);
+
+            LOG_TRACE("Steam response: \n{}", json.dump(2))
+
+            const auto response = json.get<SteamResponse>();
+
+            if (response.success != 1) {
+                throw std::runtime_error("Web API responded with 'success' != 1");
+            }
+
+            return response.dlcs;
+        } catch (const Exception& e) {
+            LOG_ERROR("Failed to fetch dlc list from Steam: {}", e.what())
+            return std::nullopt;
+        }
+    }
+
+}
diff --git a/src/core/api.hpp b/src/core/api.hpp
new file mode 100644
index 0000000..ca7d229
--- /dev/null
+++ b/src/core/api.hpp
@@ -0,0 +1,11 @@
+#pragma once
+
+#include <core/types.hpp>
+
+namespace api {
+
+    std::optional<Vector<DLC>> fetch_dlcs_from_github(AppId_t app_id) noexcept;
+
+    std::optional<Vector<DLC>> fetch_dlcs_from_steam(AppId_t app_id) noexcept;
+
+}
diff --git a/src/core/macros.hpp b/src/core/macros.hpp
deleted file mode 100644
index 835622e..0000000
--- a/src/core/macros.hpp
+++ /dev/null
@@ -1,58 +0,0 @@
-#pragma once
-
-#include <core/globals.hpp>
-#include <koalabox/hook.hpp>
-
-/**
- * By default, virtual functions are declared with __thiscall
- * convention, which is normal since they are class members.
- * But it presents an issue for us, since we cannot pass *this
- * pointer as a function argument. This is because *this
- * pointer is passed via register ECX in __thiscall
- * convention. Hence, to resolve this issue we declare our
- * hooked functions with __fastcall convention, to trick
- * the compiler into reading ECX & EDX registers as 1st
- * and 2nd function arguments respectively. Similarly, __fastcall
- * makes the compiler push the first argument into the ECX register,
- * which mimics the __thiscall calling convention. Register EDX
- * is not used anywhere in this case, but we still pass it along
- * to conform to the __fastcall convention. This all applies
- * to the x86 architecture.
- *
- * In x86-64 however, there is only one calling convention,
- * so __fastcall is simply ignored. However, RDX in this case
- * will store the 1st actual argument to the function, so we
- * have to omit it from the function signature.
- *
- * The macros below implement the above-mentioned considerations.
- */
-#ifdef _WIN64
-#define PARAMS(...) void* RCX, __VA_ARGS__
-#define ARGS(...) RCX, __VA_ARGS__
-#define THIS RCX
-#else
-#define PARAMS(...) const void* ECX, const void* EDX, __VA_ARGS__
-#define ARGS(...) ECX, EDX, __VA_ARGS__
-#define THIS ECX
-#endif
-
-// Names beginning with $ designate macros that are not meant to be used directly by the sources consuming this file
-
-#define DLL_EXPORT(TYPE) extern "C" [[maybe_unused]] __declspec( dllexport ) TYPE __cdecl
-#define VIRTUAL(TYPE) __declspec(noinline) TYPE __fastcall
-
-#define GET_ORIGINAL_HOOKED_FUNCTION(FUNC) \
-    static const auto FUNC##_o = koalabox::hook::get_original_hooked_function(globals::address_map, #FUNC, FUNC);
-
-#define GET_ORIGINAL_FUNCTION_STEAMAPI(FUNC) \
-    static const auto FUNC##_o = koalabox::hook::get_original_function(globals::steamapi_module, #FUNC, FUNC);
-
-
-#define DETOUR_ADDRESS(FUNC, ADDRESS) \
-    koalabox::hook::detour_or_warn(globals::address_map, ADDRESS, #FUNC, reinterpret_cast<uintptr_t>(FUNC));
-
-#define $DETOUR(FUNC, NAME, MODULE_HANDLE) \
-    koalabox::hook::detour_or_warn(globals::address_map, MODULE_HANDLE, NAME, reinterpret_cast<uintptr_t>(FUNC));
-
-#define DETOUR_STEAMCLIENT(FUNC) $DETOUR(FUNC, #FUNC, globals::steamclient_module)
-#define DETOUR_VSTDLIB(FUNC) $DETOUR(vstdlib::FUNC, #FUNC, globals::vstdlib_module)
diff --git a/src/core/types.hpp b/src/core/types.hpp
index 05e303c..b2c4a8e 100644
--- a/src/core/types.hpp
+++ b/src/core/types.hpp
@@ -1,7 +1,63 @@
 #pragma once
 
 #include <koalabox/core.hpp>
+#include <koalabox/hook.hpp>
 #include <nlohmann/json.hpp>
+#include <core/globals.hpp>
+
+/**
+ * By default, virtual functions are declared with __thiscall
+ * convention, which is normal since they are class members.
+ * But it presents an issue for us, since we cannot pass *this
+ * pointer as a function argument. This is because *this
+ * pointer is passed via register ECX in __thiscall
+ * convention. Hence, to resolve this issue we declare our
+ * hooked functions with __fastcall convention, to trick
+ * the compiler into reading ECX & EDX registers as 1st
+ * and 2nd function arguments respectively. Similarly, __fastcall
+ * makes the compiler push the first argument into the ECX register,
+ * which mimics the __thiscall calling convention. Register EDX
+ * is not used anywhere in this case, but we still pass it along
+ * to conform to the __fastcall convention. This all applies
+ * to the x86 architecture.
+ *
+ * In x86-64 however, there is only one calling convention,
+ * so __fastcall is simply ignored. However, RDX in this case
+ * will store the 1st actual argument to the function, so we
+ * have to omit it from the function signature.
+ *
+ * The macros below implement the above-mentioned considerations.
+ */
+#ifdef _WIN64
+#define PARAMS(...) void* RCX, __VA_ARGS__
+#define ARGS(...) RCX, __VA_ARGS__
+#define THIS RCX
+#else
+#define PARAMS(...) const void* ECX, const void* EDX, __VA_ARGS__
+#define ARGS(...) ECX, EDX, __VA_ARGS__
+#define THIS ECX
+#endif
+
+// Names beginning with $ designate macros that are not meant to be used directly by the sources consuming this file
+
+#define DLL_EXPORT(TYPE) extern "C" [[maybe_unused]] __declspec( dllexport ) TYPE __cdecl
+#define VIRTUAL(TYPE) __declspec(noinline) TYPE __fastcall
+
+#define GET_ORIGINAL_HOOKED_FUNCTION(FUNC) \
+    static const auto FUNC##_o = koalabox::hook::get_original_hooked_function(globals::address_map, #FUNC, FUNC);
+
+#define GET_ORIGINAL_FUNCTION_STEAMAPI(FUNC) \
+    static const auto FUNC##_o = koalabox::hook::get_original_function(globals::steamapi_module, #FUNC, FUNC);
+
+
+#define DETOUR_ADDRESS(FUNC, ADDRESS) \
+    koalabox::hook::detour_or_warn(globals::address_map, ADDRESS, #FUNC, reinterpret_cast<uintptr_t>(FUNC));
+
+#define $DETOUR(FUNC, NAME, MODULE_HANDLE) \
+    koalabox::hook::detour_or_warn(globals::address_map, MODULE_HANDLE, NAME, reinterpret_cast<uintptr_t>(FUNC));
+
+#define DETOUR_STEAMCLIENT(FUNC) $DETOUR(FUNC, #FUNC, globals::steamclient_module)
+#define DETOUR_VSTDLIB(FUNC) $DETOUR(vstdlib::FUNC, #FUNC, globals::vstdlib_module)
 
 #ifdef _WIN64
 #define COMPILE_KOALAGEDDON 0
@@ -9,6 +65,12 @@
 #define COMPILE_KOALAGEDDON 1
 #endif
 
+constexpr auto STEAM_APPS = "STEAMAPPS_INTERFACE_VERSION";
+constexpr auto STEAM_CLIENT = "SteamClient";
+constexpr auto STEAM_USER = "SteamUser";
+constexpr auto STEAM_INVENTORY = "STEAMINVENTORY_INTERFACE_V";
+constexpr auto CLIENT_ENGINE = "CLIENTENGINE_INTERFACE_VERSION";
+
 using AppId_t = uint32_t;
 using SteamInventoryResult_t = uint32_t;
 using SteamItemInstanceID_t = uint64_t;
@@ -33,11 +95,8 @@ enum EUserHasLicenseForAppResult {
 };
 
 class ISteamClient;
-
 class ISteamApps;
-
 class ISteamUser;
-
 class ISteamInventory;
 
 // These aliases exist solely to increase code readability
diff --git a/src/koalageddon/cache.cpp b/src/koalageddon/kg_cache.cpp
similarity index 92%
rename from src/koalageddon/cache.cpp
rename to src/koalageddon/kg_cache.cpp
index 3ada77d..88ad5b0 100644
--- a/src/koalageddon/cache.cpp
+++ b/src/koalageddon/kg_cache.cpp
@@ -1,10 +1,10 @@
-#include <koalageddon/cache.hpp>
+#include <koalageddon/kg_cache.hpp>
 #include <koalabox/cache.hpp>
 #include <koalabox/logger.hpp>
 
 constexpr auto KEY_KG_CONFIG = "koalageddon_config";
 
-namespace koalageddon::cache {
+namespace koalageddon::kg_cache {
 
     std::optional<KoalageddonConfig> get_koalageddon_config() {
         try {
diff --git a/src/koalageddon/cache.hpp b/src/koalageddon/kg_cache.hpp
similarity index 67%
rename from src/koalageddon/cache.hpp
rename to src/koalageddon/kg_cache.hpp
index 9c23471..4b6c8fe 100644
--- a/src/koalageddon/cache.hpp
+++ b/src/koalageddon/kg_cache.hpp
@@ -1,8 +1,8 @@
 #pragma once
 
-#include <koalageddon/types.hpp>
+#include <koalageddon/koalageddon.hpp>
 
-namespace koalageddon::cache {
+namespace koalageddon::kg_cache {
 
     std::optional<KoalageddonConfig> get_koalageddon_config();
 
diff --git a/src/koalageddon/koalageddon.cpp b/src/koalageddon/koalageddon.cpp
index ad711e5..737254f 100644
--- a/src/koalageddon/koalageddon.cpp
+++ b/src/koalageddon/koalageddon.cpp
@@ -1,9 +1,9 @@
 #include <koalageddon/koalageddon.hpp>
 #include <koalageddon/vstdlib.hpp>
-#include <koalageddon/cache.hpp>
+#include <koalageddon/kg_cache.hpp>
 #include <build_config.h>
-#include <core/config.hpp>
-#include <steam_functions/steam_functions.hpp>
+#include <smoke_api/config.hpp>
+#include <steam_api_exports/steam_api_exports.hpp>
 #include <koalabox/dll_monitor.hpp>
 #include <koalabox/http_client.hpp>
 #include <koalabox/logger.hpp>
@@ -17,10 +17,10 @@ namespace koalageddon {
     * @return A string representing the source of the config.
     */
     String init_koalageddon_config() {
-        if (!config::instance.koalageddon_config.is_null()) {
+        if (!smoke_api::config::instance.koalageddon_config.is_null()) {
             try {
                 // First try to read a local config override
-                config = config::instance.koalageddon_config.get<decltype(config)>();
+                config = smoke_api::config::instance.koalageddon_config.get<decltype(config)>();
 
                 return "local config override";
             } catch (const Exception& ex) {
@@ -33,7 +33,7 @@ namespace koalageddon {
             const String url = "https://raw.githubusercontent.com/acidicoala/public-entitlements/main/koalageddon/v2/steam.json";
             config = koalabox::http_client::fetch_json(url).get<decltype(config)>();
 
-            cache::save_koalageddon_config(config);
+            kg_cache::save_koalageddon_config(config);
 
             return "GitHub repository";
         } catch (const Exception& ex) {
@@ -43,7 +43,7 @@ namespace koalageddon {
         try {
             // Then try to get a cached copy of a previously fetched config.
             // We expect this unboxing to throw exception if no koalageddon config is present.
-            config = cache::get_koalageddon_config().value();
+            config = kg_cache::get_koalageddon_config().value();
 
             return "disk cache";
         } catch (const Exception& ex) {
@@ -71,7 +71,7 @@ namespace koalageddon {
 
                         globals::vstdlib_module = module_handle;
 
-                        if (config::instance.unlock_family_sharing) {
+                        if (smoke_api::config::instance.unlock_family_sharing) {
                             DETOUR_VSTDLIB(Coroutine_Create)
                         }
                     } else if (name < equals > STEAMCLIENT_DLL) {
@@ -87,8 +87,9 @@ namespace koalageddon {
                     }
                 } catch (const Exception& ex) {
                     LOG_ERROR(
-                        "Koalageddon mode dll monitor process_interface_selector error. Module: '{}', Message: {}",
-                        name, ex.what())
+                        "Error listening to DLL load events. Module: '{}', Message: {}",
+                        name, ex.what()
+                    )
                 }
             }
         );
diff --git a/src/koalageddon/koalageddon.hpp b/src/koalageddon/koalageddon.hpp
index feac193..8790c9e 100644
--- a/src/koalageddon/koalageddon.hpp
+++ b/src/koalageddon/koalageddon.hpp
@@ -1,8 +1,30 @@
 #pragma once
 
-#include <koalageddon/types.hpp>
+#include <core/types.hpp>
 
 namespace koalageddon {
+    // Offset values are interpreted according to pointer arithmetic rules, i.e.
+    // 1 unit offset represents 4 and 8 bytes in 32-bit and 64-bit architectures respectively.
+    struct KoalageddonConfig {
+        uint32_t client_engine_steam_client_internal_ordinal = 12;
+        uint32_t steam_client_internal_interface_selector_ordinal = 18;
+        uint32_t vstdlib_callback_address_offset = 20;
+        uint32_t vstdlib_callback_data_offset = 0;
+        uint32_t vstdlib_callback_interceptor_address_offset = 1;
+        uint32_t vstdlib_callback_name_offset = 4;
+
+        // We do not use *_WITH_DEFAULT macro to ensure that overriding
+        // the koalageddon config requires definition of all keys
+        NLOHMANN_DEFINE_TYPE_INTRUSIVE(
+            KoalageddonConfig, // NOLINT(misc-const-correctness)
+            client_engine_steam_client_internal_ordinal,
+            steam_client_internal_interface_selector_ordinal,
+            vstdlib_callback_address_offset,
+            vstdlib_callback_data_offset,
+            vstdlib_callback_interceptor_address_offset,
+            vstdlib_callback_name_offset
+        )
+    };
 
     /// We need this interface in other IClient* functions in order to query original DLC status
     extern const void* client_app_manager_interface;
diff --git a/src/koalageddon/steamclient.hpp b/src/koalageddon/steamclient.hpp
deleted file mode 100644
index 0bc73f3..0000000
--- a/src/koalageddon/steamclient.hpp
+++ /dev/null
@@ -1,7 +0,0 @@
-#pragma once
-
-namespace koalageddon::steamclient {
-
-    void process_client_engine(uintptr_t interface);
-
-}
diff --git a/src/steamclient_virtuals/client_app_manager.cpp b/src/koalageddon/steamclient/client_app_manager.cpp
similarity index 79%
rename from src/steamclient_virtuals/client_app_manager.cpp
rename to src/koalageddon/steamclient/client_app_manager.cpp
index 5f80e48..bb3020a 100644
--- a/src/steamclient_virtuals/client_app_manager.cpp
+++ b/src/koalageddon/steamclient/client_app_manager.cpp
@@ -1,7 +1,4 @@
 #include <steam_impl/steam_apps.hpp>
-#include <core/macros.hpp>
-#include <core/types.hpp>
-#include <steam_functions/steam_functions.hpp>
 
 VIRTUAL(bool) IClientAppManager_IsAppDlcInstalled(PARAMS(AppId_t app_id, AppId_t dlc_id)) {
     return steam_apps::IsDlcUnlocked(
diff --git a/src/steamclient_virtuals/client_apps.cpp b/src/koalageddon/steamclient/client_apps.cpp
similarity index 93%
rename from src/steamclient_virtuals/client_apps.cpp
rename to src/koalageddon/steamclient/client_apps.cpp
index 82b5d79..f143494 100644
--- a/src/steamclient_virtuals/client_apps.cpp
+++ b/src/koalageddon/steamclient/client_apps.cpp
@@ -1,8 +1,6 @@
-#include <core/macros.hpp>
-#include <core/types.hpp>
 #include <steam_impl/steam_apps.hpp>
 #include <koalageddon/koalageddon.hpp>
-#include <steam_functions/steam_functions.hpp>
+#include <koalageddon/steamclient/steamclient.hpp>
 
 VIRTUAL(int) IClientApps_GetDLCCount(PARAMS(AppId_t appId)) {
     return steam_apps::GetDLCCount(
diff --git a/src/steamclient_virtuals/client_inventory.cpp b/src/koalageddon/steamclient/client_inventory.cpp
similarity index 97%
rename from src/steamclient_virtuals/client_inventory.cpp
rename to src/koalageddon/steamclient/client_inventory.cpp
index e987351..26d75f5 100644
--- a/src/steamclient_virtuals/client_inventory.cpp
+++ b/src/koalageddon/steamclient/client_inventory.cpp
@@ -1,7 +1,5 @@
-#include <core/macros.hpp>
-#include <core/types.hpp>
+#include <koalageddon/steamclient/steamclient.hpp>
 #include <steam_impl/steam_inventory.hpp>
-#include <steam_functions/steam_functions.hpp>
 
 VIRTUAL(EResult) IClientInventory_GetResultStatus(PARAMS(SteamInventoryResult_t resultHandle)) {
     return steam_inventory::GetResultStatus(
diff --git a/src/steamclient_virtuals/client_user.cpp b/src/koalageddon/steamclient/client_user.cpp
similarity index 85%
rename from src/steamclient_virtuals/client_user.cpp
rename to src/koalageddon/steamclient/client_user.cpp
index 128a0e8..0881226 100644
--- a/src/steamclient_virtuals/client_user.cpp
+++ b/src/koalageddon/steamclient/client_user.cpp
@@ -1,4 +1,4 @@
-#include <core/macros.hpp>
+#include <koalageddon/steamclient/steamclient.hpp>
 #include <steam_impl/steam_apps.hpp>
 
 VIRTUAL(bool) IClientUser_BIsSubscribedApp(PARAMS(AppId_t app_id)) {
diff --git a/src/koalageddon/steamclient.cpp b/src/koalageddon/steamclient/steamclient.cpp
similarity index 94%
rename from src/koalageddon/steamclient.cpp
rename to src/koalageddon/steamclient/steamclient.cpp
index 5f7beb8..b776e34 100644
--- a/src/koalageddon/steamclient.cpp
+++ b/src/koalageddon/steamclient/steamclient.cpp
@@ -1,8 +1,9 @@
+#include <koalageddon/steamclient/steamclient.hpp>
 #include <koalageddon/koalageddon.hpp>
-#include <steam_functions/steam_functions.hpp>
 #include <koalabox/hook.hpp>
 #include <koalabox/logger.hpp>
 #include <koalabox/util.hpp>
+
 #include <Zydis/Zydis.h>
 #include <Zydis/DecoderTypes.h>
 
@@ -85,9 +86,9 @@ namespace koalageddon::steamclient {
         const auto& operand = instruction.operands[0];
 
         return instruction.mnemonic == ZYDIS_MNEMONIC_PUSH &&
-               operand.type == ZYDIS_OPERAND_TYPE_IMMEDIATE &&
-               operand.visibility == ZYDIS_OPERAND_VISIBILITY_EXPLICIT &&
-               operand.encoding == ZYDIS_OPERAND_ENCODING_SIMM16_32_32;
+            operand.type == ZYDIS_OPERAND_TYPE_IMMEDIATE &&
+            operand.visibility == ZYDIS_OPERAND_VISIBILITY_EXPLICIT &&
+            operand.encoding == ZYDIS_OPERAND_ENCODING_SIMM16_32_32;
     }
 
     std::optional<String> get_string_argument(const ZydisDecodedInstruction& instruction) {
@@ -141,9 +142,9 @@ namespace koalageddon::steamclient {
 
         const auto is_mov_base_esp = [](const ZydisDecodedInstruction& instruction) {
             return instruction.mnemonic == ZYDIS_MNEMONIC_MOV &&
-                   instruction.operand_count == 2 &&
-                   instruction.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER &&
-                   instruction.operands[1].reg.value == ZYDIS_REGISTER_ESP;
+                instruction.operand_count == 2 &&
+                instruction.operands[0].type == ZYDIS_OPERAND_TYPE_REGISTER &&
+                instruction.operands[1].reg.value == ZYDIS_REGISTER_ESP;
         };
 
         // Initialize with a dummy previous instruction
@@ -158,7 +159,7 @@ namespace koalageddon::steamclient {
             &instruction
         ))) {
             LOG_TRACE(
-                "{} visiting {} | {}", __func__,
+                "{} visiting {} │ {}", __func__,
                 (void*) current_address, *get_instruction_string(instruction, current_address)
             )
 
@@ -168,8 +169,8 @@ namespace koalageddon::steamclient {
                 // Save base register
                 context.base_register = instruction.operands[0].reg.value;
             } else if (is_push_immediate(last_instruction) &&
-                       is_push_immediate(instruction) &&
-                       !context.function_name) {
+                is_push_immediate(instruction) &&
+                !context.function_name) {
                 // The very first 2 consecutive pushes indicate interface and function names.
                 // However, subsequent pushes may contain irrelevant strings.
                 const auto push_string_1 = get_string_argument(last_instruction);
@@ -198,7 +199,7 @@ namespace koalageddon::steamclient {
                 // But not continue forward, in order to avoid duplicate processing
                 return;
             } else if (instruction.mnemonic == ZYDIS_MNEMONIC_JMP &&
-                       instruction.operands[0].type == ZYDIS_OPERAND_TYPE_IMMEDIATE) {
+                instruction.operands[0].type == ZYDIS_OPERAND_TYPE_IMMEDIATE) {
                 // On unconditional jump we should recurse as well
                 const auto jump_destination = get_absolute_address(instruction, current_address);
 
@@ -341,7 +342,7 @@ namespace koalageddon::steamclient {
         ))) {
             visited_addresses.insert(current_address);
             LOG_TRACE(
-                "{} visiting {} | {}", __func__,
+                "{} visiting {} │ {}", __func__,
                 (void*) current_address, *get_instruction_string(instruction, current_address)
             )
 
@@ -376,7 +377,7 @@ namespace koalageddon::steamclient {
                 LOG_TRACE("Breaking recursion due to conditional branch")
                 return;
             } else if (instruction.mnemonic == ZYDIS_MNEMONIC_JMP &&
-                       operand.type == ZYDIS_OPERAND_TYPE_IMMEDIATE
+                operand.type == ZYDIS_OPERAND_TYPE_IMMEDIATE
                 ) {
                 const auto jump_destination = get_absolute_address(instruction, current_address);
 
@@ -385,9 +386,9 @@ namespace koalageddon::steamclient {
                 LOG_TRACE("Breaking recursion due to unconditional branch")
                 return;
             } else if (instruction.mnemonic == ZYDIS_MNEMONIC_JMP &&
-                       operand.type == ZYDIS_OPERAND_TYPE_MEMORY &&
-                       operand.mem.scale == sizeof(uintptr_t) &&
-                       operand.mem.disp.has_displacement
+                operand.type == ZYDIS_OPERAND_TYPE_MEMORY &&
+                operand.mem.scale == sizeof(uintptr_t) &&
+                operand.mem.disp.has_displacement
                 ) {
                 // Special handling for jump tables. Guaranteed to be present in the interface selector.
                 const auto* table = (uintptr_t*) operand.mem.disp.value;
diff --git a/src/koalageddon/steamclient/steamclient.hpp b/src/koalageddon/steamclient/steamclient.hpp
new file mode 100644
index 0000000..152a1e4
--- /dev/null
+++ b/src/koalageddon/steamclient/steamclient.hpp
@@ -0,0 +1,33 @@
+#pragma once
+
+#include <core/types.hpp>
+
+// IClientAppManager
+VIRTUAL(bool) IClientAppManager_IsAppDlcInstalled(PARAMS(AppId_t, AppId_t));
+
+// IClientApps
+VIRTUAL(int) IClientApps_GetDLCCount(PARAMS(AppId_t));
+VIRTUAL(bool) IClientApps_BGetDLCDataByIndex(PARAMS(AppId_t, int, AppId_t*, bool*, char*, int));
+
+// IClientInventory
+VIRTUAL(EResult) IClientInventory_GetResultStatus(PARAMS(SteamInventoryResult_t));
+VIRTUAL(bool) IClientInventory_GetResultItems(
+    PARAMS(SteamInventoryResult_t, SteamItemDetails_t*, uint32_t, uint32_t *)
+);
+VIRTUAL(bool) IClientInventory_GetResultItemProperty(
+    PARAMS(SteamInventoryResult_t, uint32_t, const char*, char*, uint32_t, uint32_t*)
+);
+VIRTUAL(bool) IClientInventory_CheckResultSteamID(PARAMS(SteamInventoryResult_t, CSteamID));
+VIRTUAL(bool) IClientInventory_GetAllItems(PARAMS(SteamInventoryResult_t*));
+VIRTUAL(bool) IClientInventory_GetItemsByID(PARAMS(SteamInventoryResult_t*, const SteamItemInstanceID_t*, uint32_t));
+VIRTUAL(bool) IClientInventory_SerializeResult(PARAMS(SteamInventoryResult_t, void*, uint32_t, uint32_t *));
+VIRTUAL(bool) IClientInventory_GetItemDefinitionIDs(PARAMS(SteamItemDef_t*, uint32_t, uint32_t *));
+
+// IClientUser
+VIRTUAL(bool) IClientUser_BIsSubscribedApp(PARAMS(AppId_t));
+
+namespace koalageddon::steamclient {
+
+    void process_client_engine(uintptr_t interface);
+
+}
diff --git a/src/koalageddon/types.hpp b/src/koalageddon/types.hpp
deleted file mode 100644
index 7758f0b..0000000
--- a/src/koalageddon/types.hpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#pragma once
-
-#include <koalabox/core.hpp>
-
-// Offset values are interpreted according to pointer arithmetic rules, i.e.
-// 1 unit offset represents 4 and 8 bytes in 32-bit and 64-bit architectures respectively.
-struct KoalageddonConfig {
-    uint32_t client_engine_steam_client_internal_ordinal = 12;
-    uint32_t steam_client_internal_interface_selector_ordinal = 18;
-    uint32_t vstdlib_callback_address_offset = 20;
-    uint32_t vstdlib_callback_data_offset = 0;
-    uint32_t vstdlib_callback_interceptor_address_offset = 1;
-    uint32_t vstdlib_callback_name_offset = 4;
-
-    // We do not use *_WITH_DEFAULT macro to ensure that overriding
-    // the koalageddon config requires definition of all keys
-    NLOHMANN_DEFINE_TYPE_INTRUSIVE(
-        KoalageddonConfig, // NOLINT(misc-const-correctness)
-        client_engine_steam_client_internal_ordinal,
-        steam_client_internal_interface_selector_ordinal,
-        vstdlib_callback_address_offset,
-        vstdlib_callback_data_offset,
-        vstdlib_callback_interceptor_address_offset,
-        vstdlib_callback_name_offset
-    )
-};
diff --git a/src/koalageddon/vstdlib.cpp b/src/koalageddon/vstdlib.cpp
index 69c0b6c..03157a2 100644
--- a/src/koalageddon/vstdlib.cpp
+++ b/src/koalageddon/vstdlib.cpp
@@ -1,5 +1,4 @@
 #include <koalageddon/vstdlib.hpp>
-#include <core/macros.hpp>
 #include <koalabox/hook.hpp>
 #include <koalabox/logger.hpp>
 
diff --git a/src/koalageddon/vstdlib.hpp b/src/koalageddon/vstdlib.hpp
index c4c0fa9..3a74986 100644
--- a/src/koalageddon/vstdlib.hpp
+++ b/src/koalageddon/vstdlib.hpp
@@ -1,4 +1,3 @@
-#include <core/macros.hpp>
 #include <koalageddon/koalageddon.hpp>
 
 namespace koalageddon::vstdlib {
diff --git a/src/core/config.cpp b/src/smoke_api/config.cpp
similarity index 97%
rename from src/core/config.cpp
rename to src/smoke_api/config.cpp
index bc07557..9c290a7 100644
--- a/src/core/config.cpp
+++ b/src/smoke_api/config.cpp
@@ -1,9 +1,9 @@
-#include <core/config.hpp>
+#include <smoke_api/config.hpp>
 #include <core/paths.hpp>
 #include <koalabox/util.hpp>
 #include <koalabox/io.hpp>
 
-namespace config {
+namespace smoke_api::config {
     Config instance; // NOLINT(cert-err58-cpp)
 
     // TODO: Reloading via export
diff --git a/src/core/config.hpp b/src/smoke_api/config.hpp
similarity index 97%
rename from src/core/config.hpp
rename to src/smoke_api/config.hpp
index 44c33cf..c560d31 100644
--- a/src/core/config.hpp
+++ b/src/smoke_api/config.hpp
@@ -3,8 +3,7 @@
 #include <core/types.hpp>
 #include <koalabox/core.hpp>
 
-// TODO: move to smoke_api namespace
-namespace config {
+namespace smoke_api::config {
     enum class AppStatus {
         LOCKED,
         UNLOCKED,
diff --git a/src/smoke_api/smoke_api.cpp b/src/smoke_api/smoke_api.cpp
index f0b7cff..700b629 100644
--- a/src/smoke_api/smoke_api.cpp
+++ b/src/smoke_api/smoke_api.cpp
@@ -1,9 +1,8 @@
 #include <smoke_api/smoke_api.hpp>
 #include <build_config.h>
-#include <core/config.hpp>
+#include <smoke_api/config.hpp>
 #include <core/globals.hpp>
 #include <core/paths.hpp>
-#include <steam_functions/steam_functions.hpp>
 #include <koalabox/dll_monitor.hpp>
 #include <koalabox/logger.hpp>
 #include <koalabox/hook.hpp>
@@ -11,6 +10,7 @@
 #include <koalabox/loader.hpp>
 #include <koalabox/win_util.hpp>
 #include <koalabox/util.hpp>
+#include <steam_api_exports/steam_api_exports.hpp>
 
 #if COMPILE_KOALAGEDDON
 #include <koalageddon/koalageddon.hpp>
diff --git a/src/steam_api_exports/steam_api_exports.hpp b/src/steam_api_exports/steam_api_exports.hpp
new file mode 100644
index 0000000..175d533
--- /dev/null
+++ b/src/steam_api_exports/steam_api_exports.hpp
@@ -0,0 +1,35 @@
+#pragma once
+
+#include <core/types.hpp>
+
+// Flat
+DLL_EXPORT(bool) SteamAPI_ISteamApps_BIsSubscribedApp(ISteamApps*, AppId_t);
+DLL_EXPORT(bool) SteamAPI_ISteamApps_BIsDlcInstalled(ISteamApps*, AppId_t);
+DLL_EXPORT(int) SteamAPI_ISteamApps_GetDLCCount(ISteamApps*);
+DLL_EXPORT(bool) SteamAPI_ISteamApps_BGetDLCDataByIndex(ISteamApps*, int, AppId_t*, bool*, char*, int);
+DLL_EXPORT(EUserHasLicenseForAppResult) SteamAPI_ISteamUser_UserHasLicenseForApp(ISteamUser*, CSteamID, AppId_t);
+DLL_EXPORT(void*) SteamAPI_ISteamClient_GetISteamGenericInterface(ISteamClient*, HSteamUser, HSteamPipe, const char*);
+DLL_EXPORT(EResult) SteamAPI_ISteamInventory_GetResultStatus(ISteamInventory*, SteamInventoryResult_t);
+DLL_EXPORT(bool) SteamAPI_ISteamInventory_GetResultItems(
+    ISteamInventory*, SteamInventoryResult_t, SteamItemDetails_t*, uint32_t*
+);
+DLL_EXPORT(bool) SteamAPI_ISteamInventory_GetResultItemProperty(
+    ISteamInventory*, SteamInventoryResult_t, uint32_t, const char*, char*, uint32_t*
+);
+DLL_EXPORT(bool) SteamAPI_ISteamInventory_CheckResultSteamID(ISteamInventory*, SteamInventoryResult_t, CSteamID);
+DLL_EXPORT(bool) SteamAPI_ISteamInventory_GetAllItems(ISteamInventory*, SteamInventoryResult_t*);
+DLL_EXPORT(bool) SteamAPI_ISteamInventory_GetItemsByID(
+    ISteamInventory*, SteamInventoryResult_t*, const SteamItemInstanceID_t*, uint32_t
+);
+DLL_EXPORT(bool) SteamAPI_ISteamInventory_SerializeResult(ISteamInventory*, SteamInventoryResult_t, void*, uint32_t*);
+DLL_EXPORT(bool) SteamAPI_ISteamInventory_GetItemDefinitionIDs(ISteamInventory*, SteamItemDef_t*, uint32_t*);
+
+// Internal
+DLL_EXPORT(void*) SteamInternal_FindOrCreateUserInterface(HSteamUser, const char*);
+DLL_EXPORT(void*) SteamInternal_CreateInterface(const char*);
+
+// Unversioned
+DLL_EXPORT(void*) CreateInterface(const char*, int*);
+DLL_EXPORT(void*) SteamApps();
+DLL_EXPORT(void*) SteamClient();
+DLL_EXPORT(void*) SteamUser();
diff --git a/src/steam_api_exports/steam_api_flat.cpp b/src/steam_api_exports/steam_api_flat.cpp
index 0085f9e..e5c225a 100644
--- a/src/steam_api_exports/steam_api_flat.cpp
+++ b/src/steam_api_exports/steam_api_flat.cpp
@@ -1,12 +1,8 @@
-#include <core/macros.hpp>
-#include <core/types.hpp>
+#include <steam_api_exports/steam_api_exports.hpp>
 #include <steam_impl/steam_apps.hpp>
 #include <steam_impl/steam_client.hpp>
 #include <steam_impl/steam_inventory.hpp>
 #include <steam_impl/steam_user.hpp>
-#include <steam_functions/steam_functions.hpp>
-
-using namespace koalabox;
 
 // ISteamApps
 
diff --git a/src/steam_api_exports/steam_api_internal.cpp b/src/steam_api_exports/steam_api_internal.cpp
index bd63bf3..9255e29 100644
--- a/src/steam_api_exports/steam_api_internal.cpp
+++ b/src/steam_api_exports/steam_api_internal.cpp
@@ -1,9 +1,5 @@
-#include <core/macros.hpp>
-#include <core/types.hpp>
+#include <steam_api_exports/steam_api_exports.hpp>
 #include <steam_impl/steam_client.hpp>
-#include <koalabox/hook.hpp>
-
-using namespace koalabox;
 
 DLL_EXPORT(void*) SteamInternal_FindOrCreateUserInterface(HSteamUser hSteamUser, const char* version) {
     return steam_client::GetGenericInterface(
diff --git a/src/steam_api_exports/steam_api_unversioned.cpp b/src/steam_api_exports/steam_api_unversioned.cpp
index e679295..a5cf207 100644
--- a/src/steam_api_exports/steam_api_unversioned.cpp
+++ b/src/steam_api_exports/steam_api_unversioned.cpp
@@ -1,13 +1,10 @@
+#include <steam_api_exports/steam_api_exports.hpp>
 #include <steam_impl/steam_client.hpp>
-#include <core/macros.hpp>
 #include <koalabox/logger.hpp>
 #include <koalabox/win_util.hpp>
 #include <koalabox/util.hpp>
-#include <steam_functions/steam_functions.hpp>
 #include <regex>
 
-using namespace koalabox;
-
 /**
  * Searches the `.rdata` section of the original dll for the full interface version string
  * Results are cached for performance.
@@ -17,7 +14,7 @@ String get_versioned_interface(const String& version_prefix, const String& fallb
 
     if (not version_map.contains(version_prefix)) {
         try {
-            const String rdata = win_util::get_pe_section_data_or_throw(globals::steamapi_module, ".rdata");
+            const String rdata = koalabox::win_util::get_pe_section_data_or_throw(globals::steamapi_module, ".rdata");
 
             const std::regex regex(version_prefix + "\\d{3}");
             std::smatch match;
@@ -26,7 +23,7 @@ String get_versioned_interface(const String& version_prefix, const String& fallb
                 return version_map[version_prefix];
             }
 
-            throw util::exception("No match found for '{}'", version_prefix);
+            throw koalabox::util::exception("No match found for '{}'", version_prefix);
         } catch (const Exception& ex) {
             LOG_ERROR(
                 "Failed to get versioned interface: {}."
@@ -41,7 +38,7 @@ String get_versioned_interface(const String& version_prefix, const String& fallb
 }
 
 DLL_EXPORT(void*) SteamClient() {
-    static auto version = get_versioned_interface(steam_functions::STEAM_CLIENT, "006");
+    static auto version = get_versioned_interface(STEAM_CLIENT, "006");
 
     return steam_client::GetGenericInterface(
         __func__, version, [&]() {
@@ -53,7 +50,7 @@ DLL_EXPORT(void*) SteamClient() {
 }
 
 DLL_EXPORT(void*) SteamApps() {
-    static auto version = get_versioned_interface(steam_functions::STEAM_APPS, "002");
+    static auto version = get_versioned_interface(STEAM_APPS, "002");
 
     return steam_client::GetGenericInterface(
         __func__, version, [&]() {
@@ -65,7 +62,7 @@ DLL_EXPORT(void*) SteamApps() {
 }
 
 DLL_EXPORT(void*) SteamUser() {
-    static auto version = get_versioned_interface(steam_functions::STEAM_USER, "012");
+    static auto version = get_versioned_interface(STEAM_USER, "012");
 
     return steam_client::GetGenericInterface(
         __func__, version, [&]() {
@@ -77,7 +74,7 @@ DLL_EXPORT(void*) SteamUser() {
 }
 
 DLL_EXPORT(void*) SteamInventory() {
-    static auto version = get_versioned_interface(steam_functions::STEAM_INVENTORY, "001");
+    static auto version = get_versioned_interface(STEAM_INVENTORY, "001");
 
     return steam_client::GetGenericInterface(
         __func__, version, [&]() {
diff --git a/src/steam_api_virtuals/isteamapps.cpp b/src/steam_api_virtuals/isteamapps.cpp
index d32d11e..f0e5f9f 100644
--- a/src/steam_api_virtuals/isteamapps.cpp
+++ b/src/steam_api_virtuals/isteamapps.cpp
@@ -1,5 +1,5 @@
+#include <steam_api_virtuals/steam_api_virtuals.hpp>
 #include <steam_impl/steam_apps.hpp>
-#include <core/macros.hpp>
 
 VIRTUAL(bool) ISteamApps_BIsSubscribedApp(PARAMS(AppId_t appID)) {
     return steam_apps::IsDlcUnlocked(
diff --git a/src/steam_api_virtuals/isteamclient.cpp b/src/steam_api_virtuals/isteamclient.cpp
index df38a53..4844358 100644
--- a/src/steam_api_virtuals/isteamclient.cpp
+++ b/src/steam_api_virtuals/isteamclient.cpp
@@ -1,5 +1,5 @@
+#include <steam_api_virtuals/steam_api_virtuals.hpp>
 #include <steam_impl/steam_client.hpp>
-#include <steam_functions/steam_functions.hpp>
 
 VIRTUAL(void*) ISteamClient_GetISteamApps(
     PARAMS(
diff --git a/src/steam_api_virtuals/isteaminventory.cpp b/src/steam_api_virtuals/isteaminventory.cpp
index d4a49fb..be80b60 100644
--- a/src/steam_api_virtuals/isteaminventory.cpp
+++ b/src/steam_api_virtuals/isteaminventory.cpp
@@ -1,5 +1,5 @@
+#include <steam_api_virtuals/steam_api_virtuals.hpp>
 #include <steam_impl/steam_inventory.hpp>
-#include <steam_functions/steam_functions.hpp>
 
 VIRTUAL(EResult) ISteamInventory_GetResultStatus(PARAMS(SteamInventoryResult_t resultHandle)) {
     return steam_inventory::GetResultStatus(
diff --git a/src/steam_api_virtuals/isteamuser.cpp b/src/steam_api_virtuals/isteamuser.cpp
index 6f47e0a..e6eda64 100644
--- a/src/steam_api_virtuals/isteamuser.cpp
+++ b/src/steam_api_virtuals/isteamuser.cpp
@@ -1,5 +1,5 @@
+#include <steam_api_virtuals/steam_api_virtuals.hpp>
 #include <steam_impl/steam_user.hpp>
-#include <steam_functions/steam_functions.hpp>
 
 VIRTUAL(EUserHasLicenseForAppResult) ISteamUser_UserHasLicenseForApp(PARAMS(CSteamID steamID, AppId_t appID)) {
     return steam_user::UserHasLicenseForApp(
diff --git a/src/steam_api_virtuals/steam_api_virtuals.hpp b/src/steam_api_virtuals/steam_api_virtuals.hpp
new file mode 100644
index 0000000..fe52c8f
--- /dev/null
+++ b/src/steam_api_virtuals/steam_api_virtuals.hpp
@@ -0,0 +1,31 @@
+#pragma once
+
+#include <core/types.hpp>
+
+// ISteamApps
+VIRTUAL(bool) ISteamApps_BIsSubscribedApp(PARAMS(AppId_t));
+VIRTUAL(bool) ISteamApps_BIsDlcInstalled(PARAMS(AppId_t));
+VIRTUAL(int) ISteamApps_GetDLCCount(PARAMS());
+VIRTUAL(bool) ISteamApps_BGetDLCDataByIndex(PARAMS(int, AppId_t*, bool*, char*, int));
+
+// ISteamClient
+VIRTUAL(void*) ISteamClient_GetISteamApps(PARAMS(HSteamUser, HSteamPipe, const char*));
+VIRTUAL(void*) ISteamClient_GetISteamUser(PARAMS(HSteamUser, HSteamPipe, const char*));
+VIRTUAL(void*) ISteamClient_GetISteamGenericInterface(PARAMS(HSteamUser, HSteamPipe, const char*));
+VIRTUAL(void*) ISteamClient_GetISteamInventory(PARAMS(HSteamUser, HSteamPipe, const char*));
+
+
+// ISteamInventory
+VIRTUAL(EResult) ISteamInventory_GetResultStatus(PARAMS(SteamInventoryResult_t));
+VIRTUAL(bool) ISteamInventory_GetResultItems(PARAMS(SteamInventoryResult_t, SteamItemDetails_t*, uint32_t*));
+VIRTUAL(bool) ISteamInventory_GetResultItemProperty(
+    PARAMS(SteamInventoryResult_t, uint32_t, const char*, char*, uint32_t*)
+);
+VIRTUAL(bool) ISteamInventory_GetAllItems(PARAMS(SteamInventoryResult_t*));
+VIRTUAL(bool) ISteamInventory_GetItemsByID(PARAMS(SteamInventoryResult_t*, const SteamItemInstanceID_t*, uint32_t));
+VIRTUAL(bool) ISteamInventory_SerializeResult(PARAMS(SteamInventoryResult_t, void*, uint32_t*));
+VIRTUAL(bool) ISteamInventory_GetItemDefinitionIDs(PARAMS(SteamItemDef_t*, uint32_t*));
+VIRTUAL(bool) ISteamInventory_CheckResultSteamID(PARAMS(SteamInventoryResult_t, CSteamID));
+
+// ISteamUser
+VIRTUAL(EUserHasLicenseForAppResult) ISteamUser_UserHasLicenseForApp(PARAMS(CSteamID, AppId_t));
diff --git a/src/steam_functions/steam_functions.hpp b/src/steam_functions/steam_functions.hpp
deleted file mode 100644
index 778be77..0000000
--- a/src/steam_functions/steam_functions.hpp
+++ /dev/null
@@ -1,102 +0,0 @@
-#pragma once
-
-#include <core/macros.hpp>
-#include <core/types.hpp>
-
-// TODO: Refactor into multiple headers
-
-// ISteamClient
-VIRTUAL(void*) ISteamClient_GetISteamApps(PARAMS(HSteamUser, HSteamPipe, const char*));
-VIRTUAL(void*) ISteamClient_GetISteamUser(PARAMS(HSteamUser, HSteamPipe, const char*));
-VIRTUAL(void*) ISteamClient_GetISteamGenericInterface(PARAMS(HSteamUser, HSteamPipe, const char*));
-VIRTUAL(void*) ISteamClient_GetISteamInventory(PARAMS(HSteamUser, HSteamPipe, const char*));
-
-// ISteamApps
-VIRTUAL(bool) ISteamApps_BIsSubscribedApp(PARAMS(AppId_t));
-VIRTUAL(bool) ISteamApps_BIsDlcInstalled(PARAMS(AppId_t));
-VIRTUAL(int) ISteamApps_GetDLCCount(PARAMS());
-VIRTUAL(bool) ISteamApps_BGetDLCDataByIndex(PARAMS(int, AppId_t*, bool*, char*, int));
-
-// ISteamUser
-VIRTUAL(EUserHasLicenseForAppResult) ISteamUser_UserHasLicenseForApp(PARAMS(CSteamID, AppId_t));
-
-// ISteamInventory
-VIRTUAL(EResult) ISteamInventory_GetResultStatus(PARAMS(SteamInventoryResult_t));
-VIRTUAL(bool) ISteamInventory_GetResultItems(PARAMS(SteamInventoryResult_t, SteamItemDetails_t*, uint32_t*));
-VIRTUAL(bool) ISteamInventory_GetResultItemProperty(
-    PARAMS(SteamInventoryResult_t, uint32_t, const char*, char*, uint32_t*)
-);
-VIRTUAL(bool) ISteamInventory_GetAllItems(PARAMS(SteamInventoryResult_t*));
-VIRTUAL(bool) ISteamInventory_GetItemsByID(PARAMS(SteamInventoryResult_t*, const SteamItemInstanceID_t*, uint32_t));
-VIRTUAL(bool) ISteamInventory_SerializeResult(PARAMS(SteamInventoryResult_t, void*, uint32_t*));
-VIRTUAL(bool) ISteamInventory_GetItemDefinitionIDs(PARAMS(SteamItemDef_t*, uint32_t*));
-VIRTUAL(bool) ISteamInventory_CheckResultSteamID(PARAMS(SteamInventoryResult_t, CSteamID));
-
-// API
-
-DLL_EXPORT(void*) CreateInterface(const char*, int*);
-DLL_EXPORT(void*) SteamInternal_FindOrCreateUserInterface(HSteamUser, const char*);
-DLL_EXPORT(void*) SteamInternal_CreateInterface(const char*);
-DLL_EXPORT(void*) SteamApps();
-DLL_EXPORT(void*) SteamClient();
-DLL_EXPORT(void*) SteamUser();
-
-// Flat interfaces
-
-DLL_EXPORT(bool) SteamAPI_ISteamApps_BIsSubscribedApp(ISteamApps*, AppId_t);
-DLL_EXPORT(bool) SteamAPI_ISteamApps_BIsDlcInstalled(ISteamApps*, AppId_t);
-DLL_EXPORT(int) SteamAPI_ISteamApps_GetDLCCount(ISteamApps*);
-DLL_EXPORT(bool) SteamAPI_ISteamApps_BGetDLCDataByIndex(ISteamApps*, int, AppId_t*, bool*, char*, int);
-DLL_EXPORT(EUserHasLicenseForAppResult) SteamAPI_ISteamUser_UserHasLicenseForApp(ISteamUser*, CSteamID, AppId_t);
-DLL_EXPORT(void*) SteamAPI_ISteamClient_GetISteamGenericInterface(ISteamClient*, HSteamUser, HSteamPipe, const char*);
-DLL_EXPORT(EResult) SteamAPI_ISteamInventory_GetResultStatus(ISteamInventory*, SteamInventoryResult_t);
-DLL_EXPORT(bool) SteamAPI_ISteamInventory_GetResultItems(
-    ISteamInventory*, SteamInventoryResult_t, SteamItemDetails_t*, uint32_t*
-);
-DLL_EXPORT(bool) SteamAPI_ISteamInventory_GetResultItemProperty(
-    ISteamInventory*, SteamInventoryResult_t, uint32_t, const char*, char*, uint32_t*
-);
-DLL_EXPORT(bool) SteamAPI_ISteamInventory_CheckResultSteamID(ISteamInventory*, SteamInventoryResult_t, CSteamID);
-DLL_EXPORT(bool) SteamAPI_ISteamInventory_GetAllItems(ISteamInventory*, SteamInventoryResult_t*);
-DLL_EXPORT(bool) SteamAPI_ISteamInventory_GetItemsByID(
-    ISteamInventory*, SteamInventoryResult_t*, const SteamItemInstanceID_t*, uint32_t
-);
-DLL_EXPORT(bool) SteamAPI_ISteamInventory_SerializeResult(ISteamInventory*, SteamInventoryResult_t, void*, uint32_t*);
-DLL_EXPORT(bool) SteamAPI_ISteamInventory_GetItemDefinitionIDs(ISteamInventory*, SteamItemDef_t*, uint32_t*);
-
-// IClientApps
-VIRTUAL(int) IClientApps_GetDLCCount(PARAMS(AppId_t));
-VIRTUAL(bool) IClientApps_BGetDLCDataByIndex(PARAMS(AppId_t, int, AppId_t*, bool*, char*, int));
-
-// IClientAppManager
-VIRTUAL(bool) IClientAppManager_IsAppDlcInstalled(PARAMS(AppId_t, AppId_t));
-
-// IClientUser
-VIRTUAL(bool) IClientUser_BIsSubscribedApp(PARAMS(AppId_t));
-
-// IClientInventory
-VIRTUAL(EResult) IClientInventory_GetResultStatus(PARAMS(SteamInventoryResult_t));
-VIRTUAL(bool) IClientInventory_GetResultItems(
-    PARAMS(SteamInventoryResult_t, SteamItemDetails_t*, uint32_t, uint32_t *)
-);
-VIRTUAL(bool) IClientInventory_GetResultItemProperty(
-    PARAMS(SteamInventoryResult_t, uint32_t, const char*, char*, uint32_t, uint32_t*)
-);
-VIRTUAL(bool) IClientInventory_CheckResultSteamID(PARAMS(SteamInventoryResult_t, CSteamID));
-VIRTUAL(bool) IClientInventory_GetAllItems(PARAMS(SteamInventoryResult_t*));
-VIRTUAL(bool) IClientInventory_GetItemsByID(PARAMS(SteamInventoryResult_t*, const SteamItemInstanceID_t*, uint32_t));
-VIRTUAL(bool) IClientInventory_SerializeResult(PARAMS(SteamInventoryResult_t, void*, uint32_t, uint32_t *));
-VIRTUAL(bool) IClientInventory_GetItemDefinitionIDs(PARAMS(SteamItemDef_t*, uint32_t, uint32_t *));
-
-namespace steam_functions {
-    using namespace koalabox;
-
-    const String STEAM_APPS = "STEAMAPPS_INTERFACE_VERSION"; // NOLINT(cert-err58-cpp)
-    const String STEAM_CLIENT = "SteamClient"; // NOLINT(cert-err58-cpp)
-    const String STEAM_USER = "SteamUser"; // NOLINT(cert-err58-cpp)
-    const String STEAM_INVENTORY = "STEAMINVENTORY_INTERFACE_V"; // NOLINT(cert-err58-cpp)
-    const String CLIENT_ENGINE = "CLIENTENGINE_INTERFACE_VERSION"; // NOLINT(cert-err58-cpp)
-
-    void hook_virtuals(void* interface, const String& version_string);
-    uint32_t get_app_id_or_throw();
-}
diff --git a/src/steam_impl/steam_apps.cpp b/src/steam_impl/steam_apps.cpp
index bf06885..f1cfe96 100644
--- a/src/steam_impl/steam_apps.cpp
+++ b/src/steam_impl/steam_apps.cpp
@@ -1,23 +1,13 @@
 #include <steam_impl/steam_apps.hpp>
-#include <koalabox/http_client.hpp>
+#include <steam_impl/steam_impl.hpp>
 #include <smoke_api/app_cache.hpp>
-#include <core/config.hpp>
+#include <smoke_api/config.hpp>
 #include <koalabox/logger.hpp>
 #include <koalabox/util.hpp>
-#include <steam_functions/steam_functions.hpp>
 #include <core/types.hpp>
-#include <utility>
+#include <core/api.hpp>
 
 namespace steam_apps {
-    // TODO: Needs to go to API
-
-    struct SteamResponse {
-        uint32_t success = 0;
-        Vector<DLC> dlcs;
-
-        NLOHMANN_DEFINE_TYPE_INTRUSIVE_WITH_DEFAULT(SteamResponse, success, dlcs) // NOLINT(misc-const-correctness)
-    };
-
     /// Steamworks may max GetDLCCount value at 64, depending on how much unowned DLCs the user has.
     /// Despite this limit, some games with more than 64 DLCs still keep using this method.
     /// This means we have to get extra DLC IDs from local config, remote config, or cache.
@@ -26,38 +16,8 @@ namespace steam_apps {
     Map<AppId_t, Vector<DLC>> app_dlcs; // NOLINT(cert-err58-cpp)
     Set<AppId_t> fully_fetched; // NOLINT(cert-err58-cpp)
 
-    std::optional<Vector<DLC>> fetch_from_github(AppId_t app_id) noexcept {
-        try {
-            const auto* url
-                = "https://raw.githubusercontent.com/acidicoala/public-entitlements/main/steam/v2/dlc.json";
-            const auto json = koalabox::http_client::fetch_json(url);
-            const auto response = json.get<AppDlcNameMap>();
-
-            return DLC::get_dlcs_from_apps(response, app_id);
-        } catch (const Json::exception& e) {
-            LOG_ERROR("Failed to fetch dlc list from GitHub: {}", e.what())
-            return std::nullopt;
-        }
-    }
-
-    std::optional<Vector<DLC>> fetch_from_steam(AppId_t app_id) noexcept {
-        try {
-            const auto url = fmt::format("https://store.steampowered.com/dlc/{}/ajaxgetdlclist", app_id);
-            const auto json = koalabox::http_client::fetch_json(url);
-
-            LOG_TRACE("Steam response: \n{}", json.dump(2))
-
-            const auto response = json.get<SteamResponse>();
-
-            if (response.success != 1) {
-                throw std::runtime_error("Web API responded with 'success' != 1");
-            }
-
-            return response.dlcs;
-        } catch (const Exception& e) {
-            LOG_ERROR("Failed to fetch dlc list from Steam: {}", e.what())
-            return std::nullopt;
-        }
+    String get_app_id_log(const AppId_t app_id) {
+        return app_id ? fmt::format("App ID: {:>8}, ", app_id) : "";
     }
 
     /**
@@ -72,7 +32,7 @@ namespace steam_apps {
             // No app id means we are operating in game mode.
             // Hence, we need to use utility functions to get app id.
             try {
-                app_id = steam_functions::get_app_id_or_throw();
+                app_id = steam_impl::get_app_id_or_throw();
                 LOG_INFO("Detected App ID: {}", app_id)
             } catch (const Exception& ex) {
                 LOG_ERROR("Failed to get app ID: {}", ex.what())
@@ -96,19 +56,19 @@ namespace steam_apps {
             aggregated_dlcs < append > source;
         };
 
-        append_dlcs(config::get_extra_dlcs(app_id), "local config");
+        append_dlcs(smoke_api::config::get_extra_dlcs(app_id), "local config");
 
-        const auto github_dlcs = fetch_from_github(app_id);
-        if (github_dlcs) {
-            append_dlcs(*github_dlcs, "GitHub repository");
+        const auto github_dlcs_opt = api::fetch_dlcs_from_github(app_id);
+        if (github_dlcs_opt) {
+            append_dlcs(*github_dlcs_opt, "GitHub repository");
         }
 
-        const auto steam_dlcs = fetch_from_steam(app_id);
-        if (steam_dlcs) {
-            append_dlcs(*steam_dlcs, "Steam API");
+        const auto steam_dlcs_opt = api::fetch_dlcs_from_steam(app_id);
+        if (steam_dlcs_opt) {
+            append_dlcs(*steam_dlcs_opt, "Steam API");
         }
 
-        if (github_dlcs && steam_dlcs) {
+        if (github_dlcs_opt && steam_dlcs_opt) {
             fully_fetched.insert(app_id);
         } else {
             append_dlcs(smoke_api::app_cache::get_dlcs(app_id), "disk cache");
@@ -121,10 +81,6 @@ namespace steam_apps {
         smoke_api::app_cache::save_dlcs(app_id, aggregated_dlcs);
     }
 
-    String get_app_id_log(const AppId_t app_id) {
-        return app_id ? fmt::format("App ID: {:>8}, ", app_id) : "";
-    }
-
     bool IsDlcUnlocked(
         const String& function_name,
         AppId_t app_id,
@@ -132,7 +88,7 @@ namespace steam_apps {
         const Function<bool()>& original_function
     ) {
         try {
-            const auto unlocked = config::is_dlc_unlocked(app_id, dlc_id, original_function);
+            const auto unlocked = smoke_api::config::is_dlc_unlocked(app_id, dlc_id, original_function);
 
             LOG_INFO("{} -> {}DLC ID: {:>8}, Unlocked: {}", function_name, get_app_id_log(app_id), dlc_id, unlocked)
 
@@ -196,7 +152,7 @@ namespace steam_apps {
             const auto inject_dlc = [&](const DLC& dlc) {
                 // Fill the output pointers
                 *pDlcId = dlc.get_id();
-                *pbAvailable = config::is_dlc_unlocked(
+                *pbAvailable = smoke_api::config::is_dlc_unlocked(
                     app_id, *pDlcId, [&]() {
                         return is_originally_unlocked(*pDlcId);
                     }
@@ -223,7 +179,9 @@ namespace steam_apps {
             const auto success = original_function();
 
             if (success) {
-                *pbAvailable = config::is_dlc_unlocked(app_id, *pDlcId, [&]() { return *pbAvailable; });
+                *pbAvailable = smoke_api::config::is_dlc_unlocked(
+                    app_id, *pDlcId, [&]() { return *pbAvailable; }
+                );
                 print_dlc_info("original");
             } else {
                 LOG_WARN("{} -> original call failed for index: {}", function_name, iDLC)
diff --git a/src/steam_impl/steam_apps.hpp b/src/steam_impl/steam_apps.hpp
index 7f7dea2..ae9bb3d 100644
--- a/src/steam_impl/steam_apps.hpp
+++ b/src/steam_impl/steam_apps.hpp
@@ -1,7 +1,6 @@
 #pragma once
 
 #include <core/types.hpp>
-#include <koalabox/core.hpp>
 
 namespace steam_apps {
 
diff --git a/src/steam_impl/steam_client.cpp b/src/steam_impl/steam_client.cpp
index da5986c..ca1b05c 100644
--- a/src/steam_impl/steam_client.cpp
+++ b/src/steam_impl/steam_client.cpp
@@ -1,6 +1,6 @@
 #include <steam_impl/steam_client.hpp>
+#include <steam_impl/steam_impl.hpp>
 #include <koalabox/logger.hpp>
-#include <steam_functions/steam_functions.hpp>
 
 namespace steam_client {
 
@@ -13,7 +13,7 @@ namespace steam_client {
 
         LOG_DEBUG("{} -> '{}' @ {}", function_name, interface_version, interface)
 
-        steam_functions::hook_virtuals(interface, interface_version);
+        steam_impl::hook_virtuals(interface, interface_version);
 
         return interface;
     }
diff --git a/src/steam_impl/steam_client.hpp b/src/steam_impl/steam_client.hpp
index b9d64fb..210a62b 100644
--- a/src/steam_impl/steam_client.hpp
+++ b/src/steam_impl/steam_client.hpp
@@ -1,6 +1,6 @@
 #pragma once
 
-#include <koalabox/core.hpp>
+#include <core/types.hpp>
 
 namespace steam_client {
 
diff --git a/src/steam_functions/steam_functions.cpp b/src/steam_impl/steam_impl.cpp
similarity index 89%
rename from src/steam_functions/steam_functions.cpp
rename to src/steam_impl/steam_impl.cpp
index 983afb5..7bfeac8 100644
--- a/src/steam_functions/steam_functions.cpp
+++ b/src/steam_impl/steam_impl.cpp
@@ -1,4 +1,7 @@
-#include <steam_functions/steam_functions.hpp>
+#include <steam_impl/steam_impl.hpp>
+#include <steam_api_virtuals/steam_api_virtuals.hpp>
+#include <steam_api_exports/steam_api_exports.hpp>
+#include <core/globals.hpp>
 #include <build_config.h>
 #include <koalabox/hook.hpp>
 #include <koalabox/win_util.hpp>
@@ -7,10 +10,10 @@
 #include <polyhook2/Misc.hpp>
 
 #if COMPILE_KOALAGEDDON
-#include <koalageddon/steamclient.hpp>
+#include <koalageddon/steamclient/steamclient.hpp>
 #endif
 
-namespace steam_functions {
+namespace steam_impl {
 
     typedef Map<String, Map<int, int>> FunctionOrdinalMap;
 
@@ -19,7 +22,7 @@ namespace steam_functions {
             {
                 {6,  16},
                 {7,  18},
-                {8,  15},
+                {8, 15},
                 {9, 16},
                 {12, 15},
             }
@@ -105,7 +108,7 @@ namespace steam_functions {
 
             return version_number;
         } catch (const std::exception& ex) {
-            util::panic("Failed to extract version number from: '{}'", version_string);
+            koalabox::util::panic("Failed to extract version number from: '{}'", version_string);
         }
     }
 
@@ -120,11 +123,11 @@ namespace steam_functions {
             }
         }
 
-        util::panic("Invalid interface version ({}) for function {}", interface_version, function_name);
+        koalabox::util::panic("Invalid interface version ({}) for function {}", interface_version, function_name);
     }
 
 #define HOOK_VIRTUALS(MAP, FUNC) \
-    hook::swap_virtual_func( \
+    koalabox::hook::swap_virtual_func( \
         globals::address_map, \
         interface,      \
         #FUNC, \
@@ -209,14 +212,14 @@ namespace steam_functions {
     }
 
     HSteamPipe get_steam_pipe_or_throw() {
-        const auto& steam_api_module = win_util::get_module_handle_or_throw(STEAMAPI_DLL);
+        const auto& steam_api_module = koalabox::win_util::get_module_handle_or_throw(STEAMAPI_DLL);
         void* GetHSteamPipe_address;
         try {
-            GetHSteamPipe_address = (void*) win_util::get_proc_address_or_throw(
+            GetHSteamPipe_address = (void*) koalabox::win_util::get_proc_address_or_throw(
                 steam_api_module, "SteamAPI_GetHSteamPipe"
             );
         } catch (const Exception& ex) {
-            GetHSteamPipe_address = (void*) win_util::get_proc_address_or_throw(
+            GetHSteamPipe_address = (void*) koalabox::win_util::get_proc_address_or_throw(
                 steam_api_module, "GetHSteamPipe"
             );
         }
@@ -245,8 +248,8 @@ namespace steam_functions {
 
     AppId_t get_app_id_or_throw() {
         // Get CreateInterface
-        const auto& steam_client_module = win_util::get_module_handle_or_throw(STEAMCLIENT_DLL);
-        auto* CreateInterface_address = (void*) win_util::get_proc_address_or_throw(
+        const auto& steam_client_module = koalabox::win_util::get_module_handle_or_throw(STEAMCLIENT_DLL);
+        auto* CreateInterface_address = (void*) koalabox::win_util::get_proc_address_or_throw(
             steam_client_module, "CreateInterface"
         );
         auto* CreateInterface_o = PLH::FnCast(CreateInterface_address, CreateInterface);
@@ -255,7 +258,7 @@ namespace steam_functions {
         int result;
         auto* i_steam_client = CreateInterface_o("SteamClient006", &result);
         if (i_steam_client == nullptr) {
-            throw util::exception("Failed to obtain SteamClient006 interface. Result: {}", result);
+            throw koalabox::util::exception("Failed to obtain SteamClient006 interface. Result: {}", result);
         }
 
         // Get GetISteamUtils
diff --git a/src/steam_impl/steam_impl.hpp b/src/steam_impl/steam_impl.hpp
new file mode 100644
index 0000000..79d3899
--- /dev/null
+++ b/src/steam_impl/steam_impl.hpp
@@ -0,0 +1,11 @@
+#pragma once
+
+#include <core/types.hpp>
+
+namespace steam_impl {
+
+    void hook_virtuals(void* interface, const String& version_string);
+
+    uint32_t get_app_id_or_throw();
+
+}
diff --git a/src/steam_impl/steam_inventory.cpp b/src/steam_impl/steam_inventory.cpp
index 6a530d5..02c70d9 100644
--- a/src/steam_impl/steam_inventory.cpp
+++ b/src/steam_impl/steam_inventory.cpp
@@ -1,5 +1,5 @@
 #include <steam_impl/steam_inventory.hpp>
-#include <core/config.hpp>
+#include <smoke_api/config.hpp>
 #include <koalabox/logger.hpp>
 
 namespace steam_inventory {
@@ -53,11 +53,11 @@ namespace steam_inventory {
         )
 
         static uint32_t original_count = 0;
-        const auto injected_count = config::instance.extra_inventory_items.size();
+        const auto injected_count = smoke_api::config::instance.extra_inventory_items.size();
 
         // Automatically get inventory items from steam
         static Vector<SteamItemDef_t> auto_inventory_items;
-        if (config::instance.auto_inject_inventory) {
+        if (smoke_api::config::instance.auto_inject_inventory) {
             CALL_ONCE({
                 uint32_t count = 0;
                 if (get_item_definition_ids(nullptr, &count)) {
@@ -103,7 +103,7 @@ namespace steam_inventory {
 
             for (int i = 0; i < injected_count; i++) {
                 auto& item = pOutItemsArray[original_count + auto_injected_count + i];
-                const auto item_def_id = config::instance.extra_inventory_items[i];
+                const auto item_def_id = smoke_api::config::instance.extra_inventory_items[i];
 
                 item = new_item(item_def_id);
 
diff --git a/src/steam_impl/steam_user.cpp b/src/steam_impl/steam_user.cpp
index d6efaf8..3f68320 100644
--- a/src/steam_impl/steam_user.cpp
+++ b/src/steam_impl/steam_user.cpp
@@ -1,5 +1,5 @@
 #include <steam_impl/steam_user.hpp>
-#include <core/config.hpp>
+#include <smoke_api/config.hpp>
 #include <koalabox/logger.hpp>
 
 namespace steam_user {
@@ -16,7 +16,7 @@ namespace steam_user {
             return result;
         }
 
-        const auto has_license = config::is_dlc_unlocked(
+        const auto has_license = smoke_api::config::is_dlc_unlocked(
             0, appID, [&]() {
                 return result == k_EUserHasLicenseResultHasLicense;
             }
diff --git a/src/steamclient_exports/steamclient.cpp b/src/steamclient_exports/steamclient.cpp
index 453ca38..3312072 100644
--- a/src/steamclient_exports/steamclient.cpp
+++ b/src/steamclient_exports/steamclient.cpp
@@ -1,4 +1,3 @@
-#include <core/macros.hpp>
 #include <steam_impl/steam_client.hpp>
 
 DLL_EXPORT(void*) CreateInterface(const char* interface_string, int* out_result) {