diff --git a/config/common.json b/config/common.json
new file mode 100644
index 0000000..99fb03e
--- /dev/null
+++ b/config/common.json
@@ -0,0 +1,3 @@
+{
+    "web": "https://demo.winxg.com"
+}
\ No newline at end of file
diff --git a/public/index.php b/public/index.php
index 6b09ab5..f924ab4 100644
--- a/public/index.php
+++ b/public/index.php
@@ -248,8 +248,7 @@ function api_test()
 
 function api_upload()
 {
-    $web = "https://demo.winxg.com";
-
+    $web = get_config('common', 'web');
     $url = "https://telegra.ph/upload";
     $filePath = $_FILES["file"]["tmp_name"];
     $ch = curl_init();
@@ -298,32 +297,7 @@ function init()
 
     check_api();
 
-    if (str_starts_with($_SERVER['REQUEST_URI'], "/file")) {
-        $id = explode("/", $_SERVER['REQUEST_URI'])[2] ?? "";
-
-        $stmt = get_db()->prepare("SELECT * FROM files WHERE uuid=:uuid LIMIT 1");
-        $stmt->bindParam(':uuid', $id);
-        $stmt->execute();
-
-        $row = $stmt->fetch(PDO::FETCH_ASSOC);
-
-        if (empty($row['src'])) {
-            echo_json([
-                "code" => 1,
-                "msg" => "图片不存在",
-                "data" => []
-            ]);
-        }
-
-        $imgUrl = "https://telegra.ph{$row['src']}";
-
-        $content = file_get_contents($imgUrl);
-        header('Content-Type: image/jpeg');
-        header('Content-Length: ' . strlen($content));
-
-        echo $content;
-        die;
-    }
+    check_file();
 }
 
 function get_page_title()
@@ -377,5 +351,54 @@ function uniqidReal($lenght = 13)
     return substr(bin2hex($bytes), 0, $lenght);
 }
 
+function check_file()
+{
+    if (str_starts_with($_SERVER['REQUEST_URI'], "/file")) {
+        $id = explode("/", $_SERVER['REQUEST_URI'])[2] ?? "";
+
+        $stmt = get_db()->prepare("SELECT * FROM files WHERE uuid=:uuid LIMIT 1");
+        $stmt->bindParam(':uuid', $id);
+        $stmt->execute();
+
+        $row = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        if (empty($row['src'])) {
+            echo_json([
+                "code" => 1,
+                "msg" => "图片不存在",
+                "data" => []
+            ]);
+        }
+
+        $imgUrl = "https://telegra.ph{$row['src']}";
+
+        $content = file_get_contents($imgUrl);
+        header('Content-Type: image/jpeg');
+        header('Content-Length: ' . strlen($content));
+
+        echo $content;
+        die;
+    }
+}
+
+function get_config($file, $path)
+{
+    if (!file_exists(CONFIG_PATH . $file . ".json")) {
+        return "";
+    }
+    $conf = file_get_contents(CONFIG_PATH . $file . ".json");
+
+    $arr = json_decode($conf, true);
+
+    $value = $arr;
+
+    foreach(explode(".", $path) as $p){
+        $value = $value[$p] ?? "";
+        if (!$value) break;
+    }
+
+    return $value;
+}
+
 // common func end
 ?>
\ No newline at end of file