From efca0a2ac81607f29e0dd9711d4d8fb161207696 Mon Sep 17 00:00:00 2001
From: Sean Du <do4suki@gmail.com>
Date: Mon, 22 Jun 2026 12:37:04 +0800
Subject: [PATCH] Require api_url before startup

Signed-off-by: Sean Du <do4suki@gmail.com>
---
 README.md           |  6 +++---
 config.json.example |  2 +-
 src/config.cpp      | 31 ++++++++++++++++++++++++-------
 src/config.hpp      |  2 +-
 src/proxy.cpp       |  6 +++++-
 5 files changed, 34 insertions(+), 13 deletions(-)

diff --git a/README.md b/README.md
index 409cce1..2bec831 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ make
 ```json
 {
   "force_http": true,
-  "api_url": "apis.game.starlight-stage.jp/",
+  "api_url": "",
   "asset_url": "asset-starlight-stage.akamaized.net/",
   "launch_borderless_helper": true
 }
@@ -51,8 +51,8 @@ make
 
 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
+- `api_url`：必填。API 主机名，按原始字段格式填写，不带 scheme；留空时程序会弹窗提示
+- `asset_url`：资源主机名，按原始字段格式填写，不带 scheme；留空时回落到 `asset-starlight-stage.akamaized.net/`
 - `launch_borderless_helper`：是否自动启动 `cgss-borderless-helper.exe`。默认 `true`
 
 **使用方法**
diff --git a/config.json.example b/config.json.example
index 0e05996..c803f9b 100644
--- a/config.json.example
+++ b/config.json.example
@@ -1,6 +1,6 @@
 {
   "force_http": true,
-  "api_url": "apis.game.starlight-stage.jp/",
+  "api_url": "",
   "asset_url": "asset-starlight-stage.akamaized.net/",
   "launch_borderless_helper": true
 }
diff --git a/src/config.cpp b/src/config.cpp
index 87870a9..67c4775 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -6,6 +6,10 @@ namespace config {
     namespace {
         OverrideUrls g_urls;
         bool g_loaded = false;
+        constexpr const wchar_t* kConfigErrorTitleW = L"cgss-dmm-hook";
+        constexpr const wchar_t* kApiUrlRequiredMessageW =
+            L"config.json \u4E2D\u5FC5\u987B\u8BBE\u7F6E\u975E\u7A7A api_url\u3002";
+        constexpr const char* kDefaultAssetUrl = "asset-starlight-stage.akamaized.net/";
 
         std::string get_config_path() {
             char path[MAX_PATH] = {};
@@ -58,7 +62,7 @@ namespace config {
             return
                 "{\r\n"
                 "  \"force_http\": true,\r\n"
-                "  \"api_url\": \"apis.game.starlight-stage.jp/\",\r\n"
+                "  \"api_url\": \"\",\r\n"
                 "  \"asset_url\": \"asset-starlight-stage.akamaized.net/\",\r\n"
                 "  \"launch_borderless_helper\": true\r\n"
                 "}\r\n";
@@ -79,16 +83,16 @@ namespace config {
         }
     }
 
-    void load() {
+    bool load() {
         if (g_loaded) {
-            return;
+            return !g_urls.api_url.empty();
         }
         g_loaded = true;
 
         const auto config_path = get_config_path();
         if (config_path.empty()) {
             hook_log("[cgss-dmm-hook] failed to resolve config.json path");
-            return;
+            return false;
         }
 
         std::ifstream config_stream(config_path);
@@ -101,7 +105,7 @@ namespace config {
             } else {
                 hook_log("[cgss-dmm-hook] config.json not found, failed to generate default config.json");
             }
-            return;
+            return false;
         }
 
         rapidjson::IStreamWrapper wrapper(config_stream);
@@ -109,7 +113,7 @@ namespace config {
         document.ParseStream(wrapper);
         if (document.HasParseError() || !document.IsObject()) {
             hook_log("[cgss-dmm-hook] failed to parse config.json");
-            return;
+            return false;
         }
 
         read_bool(document, "force_http", g_urls.force_http);
@@ -125,10 +129,23 @@ namespace config {
 
         if (!g_urls.api_url.empty()) {
             hook_logf("[cgss-dmm-hook] normalized api_url=%s", g_urls.api_url.c_str());
+        } else {
+            hook_log("[cgss-dmm-hook] api_url is empty");
+            MessageBoxW(
+                nullptr,
+                kApiUrlRequiredMessageW,
+                kConfigErrorTitleW,
+                MB_OK | MB_ICONERROR | MB_TOPMOST
+            );
+            return false;
         }
-        if (!g_urls.asset_url.empty()) {
+        if (g_urls.asset_url.empty()) {
+            g_urls.asset_url = kDefaultAssetUrl;
+            hook_logf("[cgss-dmm-hook] asset_url is empty, fallback to %s", g_urls.asset_url.c_str());
+        } else {
             hook_logf("[cgss-dmm-hook] normalized asset_url=%s", g_urls.asset_url.c_str());
         }
+        return true;
     }
 
     const OverrideUrls& get() {
diff --git a/src/config.hpp b/src/config.hpp
index 0b057da..4921435 100644
--- a/src/config.hpp
+++ b/src/config.hpp
@@ -8,6 +8,6 @@ namespace config {
         bool launch_borderless_helper = true;
     };
 
-    void load();
+    bool load();
     const OverrideUrls& get();
 }
diff --git a/src/proxy.cpp b/src/proxy.cpp
index 9db6990..1863d2a 100644
--- a/src/proxy.cpp
+++ b/src/proxy.cpp
@@ -343,7 +343,11 @@ namespace {
             hook_log("[cgss-dmm-hook] non-game process detected, skipping hook/helper startup");
             return 0;
         }
-        config::load();
+        if (!config::load()) {
+            hook_log("[cgss-dmm-hook] config validation failed, terminating process");
+            TerminateProcess(GetCurrentProcess(), 1);
+            return 0;
+        }
         start_borderless_helper();
         start_hook_thread();
         return 0;