new: add config hub

lib/util.go

@@ -1,12 +1,27 @@
 package lib
 
 import (
+	"fmt"
+	"strings"
 	"time"
 
 	"github.com/gofiber/fiber/v2"
 	"github.com/russross/blackfriday/v2"
 )
 
+// python3 -c "import string; print(string.ascii_letters+string.digits+\" /,_-?!'\\\"\")"
+var valid string = `abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 /,_-?!'"`
+
+func IsStringValid(s string) bool{
+  for _, c := range s {
+    if !strings.Contains(valid, string(c)){
+      fmt.Printf("%c\n", c)
+      return false
+    }
+  }
+  return true
+}
+
 func RenderError(c *fiber.Ctx, code int) error{
   var msg string = "Server Error"
   c.Status(code)