core: use saslprep to limit usernames

packages/hydrooj/src/lib/validator.ts

@@ -75,8 +75,6 @@ export const isEmail = (s) => RE_MAIL.test(s);
 export const checkEmail = (s) => { if (!RE_MAIL.test(s)) throw new ValidationError('mail'); else return s; };
 export const isContent = (s: any) => s && s.length < 65536;
 export const checkContent = (s) => { if (!(s && s.length < 65536)) throw new ValidationError('content'); else return s; };
-export const isName = (s) => s && s.length < 256;
-export const checkName = (s) => { if (!isName(s)) throw new ValidationError('name'); else return s; };
 export const isPid = (s) => RE_PID.test(s.toString());
 export const checkPid = (s) => { if (!RE_PID.test(s)) throw new ValidationError('pid'); else return s; };
 export const isIntro = () => true;
@@ -102,8 +100,6 @@ global.Hydro.lib.validator = {
     checkEmail,
     isContent,
     checkContent,
-    isName,
-    checkName,
     isPid,
     checkPid,
     isIntro,