server/data/challengeCheck.js

   1 function checkChallenge(c)
   2 {
   3     const vid = parseInt(c.vid);
   4     if (isNaN(vid) || vid <= 0)
   5         return "Please select a variant";
   6
   7     const mainTime = parseInt(c.mainTime);
   8     const increment = parseInt(c.increment);
   9     if (isNaN(mainTime) || mainTime <= 0)
  10         return "Main time should be strictly positive";
  11     if (isNaN(increment) || increment < 0)
  12         return "Increment must be positive";
  13
  14     // Basic alphanumeric check for players names
  15     let playerCount = 0;
  16     for (p of c.players)
  17     {
  18         if (p.name.length > 0)
  19         {
  20             if (!p.name.match(/^[\w]+$/))
  21                 return "Wrong characters in players names";
  22             playerCount++;
  23         }
  24     }
  25
  26     if (playerCount > 0 && playerCount != c.nbPlayers-1)
  27         return "None, or all of the opponent names must be filled"
  28
  29     // Just characters check on server:
  30     if (!c.fen.match(/^[a-zA-Z0-9, /-]*$/))
  31         return "Bad FEN string";
  32 }
  33
  34 module.exports = checkChallenge;