URIにきちんとTLDが付いているか検証する

validateHost.js

/**
 * @example
 *  validateHost("http://hogehoge"); // false
 */

var io = window.Services.io,
    eTLD = window.Services.eTLD,
    fixup = Cc["@mozilla.org/docshell/urifixup;1"].getService(Ci.nsIURIFixup);

function makeURI (aURL, aCharset, aBaseURI) {
  try {
    return io.newURI(aURL, aCharset, aBaseURI);
  } catch(e) {
    return fixup.createFixupURI(aURL, fixup.FIXUP_FLAG_NONE);
  }
}
function validateHost (aURI) {
  if (!(aURI instanceof Ci.nsIURI))
    aURI = makeURI(aURI);

  var suffix = eTLD.getPublicSuffixFromHost(aURI.host);
  // co.jp など "." が含まれていたらドメイン名だとみなす
  if (suffix.indexOf(".") > 0)
    return true;

  switch (suffix) {
  // gTLD
  case "aero":
  case "arpa":
  case "asia":
  case "biz":
  case "cat":
  case "com":
  case "coop":
  case "edu":
  case "gov":
  case "info":
  case "int":
  case "jobs":
  case "mil":
  case "mobi":
  case "museum":
  case "name":
  case "net":
  case "org":
  case "pro":
  case "tel":
  case "travel":
  // ccTLD
  case "ac":
  case "ad":
  case "ae":
  case "af":
  case "ag":
  case "ai":
  case "al":
  case "am":
  case "an":
  case "ao":
  case "aq":
  case "ar":
  case "as":
  case "at":
  case "au":
  case "aw":
  case "ax":
  case "az":
  case "ba":
  case "bb":
  case "bd":
  case "be":
  case "bf":
  case "bg":
  case "bh":
  case "bi":
  case "bj":
  case "bm":
  case "bn":
  case "bo":
  case "br":
  case "bs":
  case "bt":
  case "bv":
  case "bw":
  case "by":
  case "bz":
  case "ca":
  case "cc":
  case "cd":
  case "cf":
  case "cg":
  case "ch":
  case "ci":
  case "ck":
  case "cl":
  case "cm":
  case "cn":
  case "co":
  case "cr":
  case "cs":
  case "cu":
  case "cv":
  case "cx":
  case "cy":
  case "cz":
  case "dd":
  case "de":
  case "dj":
  case "dk":
  case "dm":
  case "do":
  case "dz":
  case "ec":
  case "ee":
  case "eg":
  case "eh":
  case "er":
  case "es":
  case "et":
  case "eu":
  case "fi":
  case "fj":
  case "fk":
  case "fm":
  case "fo":
  case "fr":
  case "ga":
  case "gb":
  case "gd":
  case "ge":
  case "gf":
  case "gg":
  case "gh":
  case "gi":
  case "gl":
  case "gm":
  case "gn":
  case "gp":
  case "gq":
  case "gr":
  case "gs":
  case "gt":
  case "gu":
  case "gw":
  case "gy":
  case "hk":
  case "hm":
  case "hn":
  case "hr":
  case "ht":
  case "hu":
  case "id":
  case "ie":
  case "il":
  case "im":
  case "in":
  case "io":
  case "iq":
  case "ir":
  case "is":
  case "it":
  case "je":
  case "jm":
  case "jo":
  case "jp":
  case "ke":
  case "kg":
  case "kh":
  case "ki":
  case "km":
  case "kn":
  case "kp":
  case "kr":
  case "kw":
  case "ky":
  case "kz":
  case "la":
  case "lb":
  case "lc":
  case "li":
  case "lk":
  case "lr":
  case "ls":
  case "lt":
  case "lu":
  case "lv":
  case "ly":
  case "ma":
  case "mc":
  case "md":
  case "me":
  case "mg":
  case "mh":
  case "mk":
  case "ml":
  case "mm":
  case "mn":
  case "mo":
  case "mp":
  case "mq":
  case "mr":
  case "ms":
  case "mt":
  case "mu":
  case "mv":
  case "mw":
  case "mx":
  case "my":
  case "mz":
  case "na":
  case "nc":
  case "ne":
  case "nf":
  case "ng":
  case "ni":
  case "nl":
  case "no":
  case "np":
  case "nr":
  case "nu":
  case "nz":
  case "om":
  case "pa":
  case "pe":
  case "pf":
  case "pg":
  case "ph":
  case "pk":
  case "pl":
  case "pm":
  case "pn":
  case "pr":
  case "ps":
  case "pt":
  case "pw":
  case "py":
  case "qa":
  case "re":
  case "ro":
  case "rs":
  case "ru":
  case "rw":
  case "sa":
  case "sb":
  case "sc":
  case "sd":
  case "se":
  case "sg":
  case "sh":
  case "si":
  case "sj":
  case "sk":
  case "sl":
  case "sm":
  case "sn":
  case "so":
  case "sr":
  case "st":
  case "su":
  case "sv":
  case "sy":
  case "sz":
  case "tc":
  case "td":
  case "tf":
  case "tg":
  case "th":
  case "tj":
  case "tk":
  case "tl":
  case "tm":
  case "tn":
  case "to":
  case "tp":
  case "tr":
  case "tt":
  case "tv":
  case "tw":
  case "tz":
  case "ua":
  case "ug":
  case "uk":
  case "um":
  case "us":
  case "uy":
  case "uz":
  case "va":
  case "vc":
  case "ve":
  case "vg":
  case "vi":
  case "vn":
  case "vu":
  case "wf":
  case "ws":
  case "ye":
  case "yt":
  case "yu":
  case "za":
  case "zm":
  case "zr":
  case "zw":
    return true;
  default:
    return false;
  }
}