Refactor Base64 validation in isLikelyBase64 function to remove unnecessary suffix check.

parser/common.go

@@ -33,7 +33,7 @@ func ParsePort(portStr string) (int, error) {
 }
 
 func isLikelyBase64(s string) bool {
-	if len(s)%4 == 0 && strings.HasSuffix(s, "=") && !strings.Contains(strings.TrimSuffix(s, "="), "=") {
+	if len(s)%4 == 0 && !strings.Contains(strings.TrimSuffix(s, "="), "=") {
 		s = strings.TrimSuffix(s, "=")
 		chars := "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
 		for _, c := range s {

server/handler/sub.go

@@ -27,10 +27,9 @@ func SubHandler(model M.ClashType, template string) func(c *gin.Context) {
 
 		if len(query.Subs) == 1 {
 			userInfoHeader, err := common.FetchSubscriptionUserInfo(query.Subs[0], "clash", config.GlobalConfig.RequestRetryTimes)
-			if err != nil {
-				c.String(http.StatusInternalServerError, err.Error())
+			if err == nil {
+				c.Header("subscription-userinfo", userInfoHeader)
 			}
-			c.Header("subscription-userinfo", userInfoHeader)
 		}
 
 		if query.NodeListMode {

server/static/index.html

@@ -55,7 +55,7 @@
             <label for="endpoint">客户端类型:</label>
             <select class="form-control" id="endpoint" name="endpoint">
                 <option value="clash">Clash</option>
-                <option value="meta">Clash.Meta</option>
+                <option value="meta" selected>Clash.Meta</option>
             </select>
         </div>
         <!-- Template -->
@@ -75,9 +75,9 @@
         </div>
         <!-- User Agent -->
         <div class="form-group mb-3">
-            <label for="user-agent">ua标识:</label>
+            <label for="user-agent">UA 标识:</label>
             <textarea class="form-control" id="user-agent" name="user-agent"
-                placeholder="用于获取订阅的http请求中的user-agent标识(可选)" rows="3"></textarea>
+                placeholder="用于获取订阅的 http 请求中的 User-Agent 标识（可选）" rows="3"></textarea>
         </div>
         <!-- Refresh -->
         <div class="form-check mb-3">