[REORG]

src/Yavsc.Abstract/Chat/HubInputValidator.cs

@@ -0,0 +1,90 @@
+//
+//  ChatHub.cs
+//
+//  Author:
+//       Paul Schneider <paul@pschneider.fr>
+//
+//  Copyright (c) 2016-2019 GNU GPL
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public License
+//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System;
+using System.Linq;
+using Yavsc;
+
+namespace Yavsc
+{
+    public class HubInputValidator {
+
+        public Action<string,string,string> NotifyUser {get;set;}
+        public bool ValidateRoomName (string roomName)
+        {
+            bool valid = ValidateStringLength(roomName,1,25);
+            if (valid) valid = IsLetterOrDigit(roomName);
+            if (!valid) NotifyUser(NotificationTypes.Error, "roomName", ChatHub.InvalidRoomName);
+            return valid;
+        }
+        public bool ValidateUserName (string userName)
+        {
+            bool valid = true;
+            
+            if (userName.Length<1 || userName[0] == '?' && userName.Length<2) valid = false;
+            if (valid) {
+                    string suname = (userName[0] == '?') ? userName.Substring(1) : userName;
+                    if (valid) valid = ValidateStringLength(suname, 1,12);
+                    if (valid) valid = IsLetterOrDigit(userName);
+            }
+            if (!valid) NotifyUser(NotificationTypes.Error, "userName" , ChatHub.InvalidUserName);
+            return valid;
+        }
+        public bool ValidateMessage (string message)
+        {
+            if (!ValidateStringLength(message, 1, 10240))
+            {
+                NotifyUser(NotificationTypes.Error, "message", ChatHub.InvalidMessage);
+                return false;
+            }
+            return true;
+        }
+        public bool ValidateReason (string reason)
+        {
+            if (!ValidateStringLength(reason, 1,240))
+            {
+                NotifyUser(NotificationTypes.Error, "reason", ChatHub.InvalidReason);
+                return false;
+            }
+            return true;
+        }
+        static bool ValidateStringLength(string str, int minLen, int maxLen)
+        {
+            if (string.IsNullOrEmpty(str))
+            {
+                if (minLen<=0) {
+                    return true;
+                } else {
+                    return false;
+                }
+            }
+            if (str.Length>maxLen||str.Length<minLen) return false;
+            return true;
+        }
+        static bool IsLetterOrDigit(string s)
+        {
+            foreach (var c in s)
+                if (!char.IsLetterOrDigit(c))
+                    return false;
+            return true;
+        }
+    }
+}