feat: fs link api

server/common/base.go

@@ -0,0 +1,18 @@
+package common
+
+import (
+	"fmt"
+	"github.com/alist-org/alist/v3/internal/conf"
+	"github.com/alist-org/alist/v3/internal/setting"
+	"net/http"
+	"strings"
+)
+
+func GetBaseUrl(r *http.Request) string {
+	baseUrl := setting.GetByKey(conf.BaseUrl)
+	if baseUrl == "" {
+		baseUrl = fmt.Sprintf("//%s", r.Host)
+	}
+	strings.TrimSuffix(baseUrl, "/")
+	return baseUrl
+}