Add configurable scheme hook

Signed-off-by: Sean Du <do4suki@gmail.com>

README.md

@@ -5,7 +5,7 @@
 **用途**
 - 转发 `UnityPlayer.dll` 实际导入的少量 `version.dll` 导出函数
 - 等待 IL2CPP 运行时初始化稳定
-- 运行时 hook `Stage.NetworkUtil.GetSchemeType()`，强制返回 `0`
+- 可选地 hook `Stage.NetworkUtil.GetSchemeType()`，在需要时强制切到 `http`
 - 支持通过 `config.json` 覆盖 `api_url` 和 `asset_url`
 
 **目录结构**
@@ -17,6 +17,7 @@
 - `GameAssembly.dll` 出现时，IL2CPP runtime 可能还不能安全访问，因此 hook 线程会额外等待一小段时间
 - 运行时日志会写到游戏目录下的 `cgss-http-hook.log`
 - 生成的 DLL 包含 Windows 版本资源，定义在 `src/version.rc`
+- 支持通过 `force_http` 控制是否 hook scheme，默认 `true`
 - `config.json` 中的 URL 会自动规范化：若写了 `http://` 或 `https://` 会自动去掉，若末尾缺少 `/` 会自动补上
 
 **构建**
@@ -33,12 +34,14 @@ cmake --build build
 **config.json**
 ```json
 {
+  "force_http": true,
   "api_url": "apis.game.starlight-stage.jp/",
   "asset_url": "asset-starlight-stage.akamaized.net/"
 }
 ```
 
 字段说明：
+- `force_http`：是否强制将 scheme 改成 `http`。默认 `true`
 - `api_url`：API 主机名，按原始字段格式填写，不带 scheme
 - `asset_url`：资源主机名，按原始字段格式填写，不带 scheme
 

config.json.example

@@ -1,4 +1,5 @@
 {
+  "force_http": true,
   "api_url": "apis.game.starlight-stage.jp/",
   "asset_url": "asset-starlight-stage.akamaized.net/"
 }

src/config.cpp

@@ -60,6 +60,13 @@ namespace config {
             }
             out = normalize_base_url(document[key].GetString());
         }
+
+        void read_bool(const rapidjson::Document& document, const char* key, bool& out) {
+            if (!document.HasMember(key) || !document[key].IsBool()) {
+                return;
+            }
+            out = document[key].GetBool();
+        }
     }
 
     void load() {
@@ -88,9 +95,12 @@ namespace config {
             return;
         }
 
+        read_bool(document, "force_http", g_urls.force_http);
         read_string(document, "api_url", g_urls.api_url);
         read_string(document, "asset_url", g_urls.asset_url);
 
+        hook_logf("[cgss-http-hook] force_http=%s", g_urls.force_http ? "true" : "false");
+
         if (!g_urls.api_url.empty()) {
             hook_logf("[cgss-http-hook] normalized api_url=%s", g_urls.api_url.c_str());
         }

src/config.hpp

@@ -2,6 +2,7 @@
 
 namespace config {
     struct OverrideUrls {
+        bool force_http = true;
         std::string api_url;
         std::string asset_url;
     };

src/hook.cpp

@@ -43,6 +43,12 @@ namespace {
     }
 
     void patch_custom_preference_scheme() {
+        const auto& urls = config::get();
+        if (!urls.force_http) {
+            hook_log("[cgss-http-hook] force_http disabled, skipping CustomPreference scheme patch");
+            return;
+        }
+
         auto custom_preference = il2cpp_symbols::get_class(
             "Assembly-CSharp.dll", "Cute", "CustomPreference"
         );
@@ -111,20 +117,25 @@ namespace {
             return;
         }
 
-        auto create_status = MH_CreateHook(
-            reinterpret_cast<void*>(addr),
-            reinterpret_cast<void*>(&get_scheme_type_hook),
-            reinterpret_cast<void**>(&g_orig_get_scheme_type)
-        );
-        if (create_status != MH_OK && create_status != MH_ERROR_ALREADY_CREATED) {
-            hook_log("[cgss-http-hook] MH_CreateHook failed");
-            return;
-        }
+        const auto& urls = config::get();
+        if (urls.force_http) {
+            auto create_status = MH_CreateHook(
+                reinterpret_cast<void*>(addr),
+                reinterpret_cast<void*>(&get_scheme_type_hook),
+                reinterpret_cast<void**>(&g_orig_get_scheme_type)
+            );
+            if (create_status != MH_OK && create_status != MH_ERROR_ALREADY_CREATED) {
+                hook_log("[cgss-http-hook] MH_CreateHook failed");
+                return;
+            }
 
-        auto enable_status = MH_EnableHook(reinterpret_cast<void*>(addr));
-        if (enable_status != MH_OK && enable_status != MH_ERROR_ENABLED) {
-            hook_log("[cgss-http-hook] MH_EnableHook failed");
-            return;
+            auto enable_status = MH_EnableHook(reinterpret_cast<void*>(addr));
+            if (enable_status != MH_OK && enable_status != MH_ERROR_ENABLED) {
+                hook_log("[cgss-http-hook] MH_EnableHook failed");
+                return;
+            }
+        } else {
+            hook_log("[cgss-http-hook] force_http disabled, keeping original scheme");
         }
 
         if (get_application_server_url_addr) {
@@ -156,7 +167,9 @@ namespace {
         }
 
         InterlockedExchange(&g_hook_installed, 1);
-        hook_log("[cgss-http-hook] hooked Stage.NetworkUtil.GetSchemeType");
+        if (urls.force_http) {
+            hook_log("[cgss-http-hook] hooked Stage.NetworkUtil.GetSchemeType");
+        }
     }
 
     DWORD WINAPI init_thread(void*) {