Issue 1801 - Use URL objects to process URLs in the background page

lib/basedomain.js

Index: lib/basedomain.js
===================================================================
deleted file mode 100644
--- a/lib/basedomain.js
+++ /dev/null
@@ -1,173 +0,0 @@
-/*!
- * Parts of original code from ipv6.js <https://github.com/beaugunderson/javascript-ipv6>
- * Copyright 2011 Beau Gunderson
- * Available under MIT license <http://mths.be/mit>
- */
-
-const RE_V4 = /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|0x[0-9a-f][0-9a-f]?|0[0-7]{3})\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|0x[0-9a-f][0-9a-f]?|0[0-7]{3})$/i;
-const RE_V4_HEX = /^0x([0-9a-f]{8})$/i;
-const RE_V4_NUMERIC = /^[0-9]+$/;
-const RE_V4inV6 = /(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;
-
-const RE_BAD_CHARACTERS = /([^0-9a-f:])/i;
-const RE_BAD_ADDRESS = /([0-9a-f]{5,}|:{3,}|[^:]:$|^:[^:]$)/i;
-
-function isIPv4(address)
-{
-  if (RE_V4.test(address))
-    return true;
-  if (RE_V4_HEX.test(address))
-    return true;
-  if (RE_V4_NUMERIC.test(address))
-    return true;
-  return false;
-}
-
-function isIPv6(address)
-{
-  var a4addon = 0;
-  var address4 = address.match(RE_V4inV6);
-  if (address4)
-  {
-    var temp4 = address4[0].split('.');
-    for (var i = 0; i < 4; i++)
-    {
-      if (/^0[0-9]+/.test(temp4[i]))
-        return false;
-    }
-    address = address.replace(RE_V4inV6, '');
-    if (/[0-9]$/.test(address))
-      return false;
-
-    address = address + temp4.join(':');
-    a4addon = 2;
-  }
-
-  if (RE_BAD_CHARACTERS.test(address))
-    return false;
-
-  if (RE_BAD_ADDRESS.test(address))
-    return false;
-
-  function count(string, substring)
-  {
-    return (string.length - string.replace(new RegExp(substring,"g"), '').length) / substring.length;
-  }
-
-  var halves = count(address, '::');
-  if (halves == 1 && count(address, ':') <= 6 + 2 + a4addon)
-    return true;
-  if (halves == 0 && count(address, ':') == 7 + a4addon)
-    return true;
-  return false;
-}
-
-/**
- * Returns base domain for specified host based on Public Suffix List.
- */
-function getBaseDomain(/**String*/ hostname) /**String*/
-{
-  // remove trailing dot(s)
-  hostname = hostname.replace(/\.+$/, '');
-
-  // return IP address untouched
-  if (isIPv6(hostname) || isIPv4(hostname))
-    return hostname;
-  
-  // decode punycode if exists
-  if (hostname.indexOf('xn--') >= 0)
-  {
-    hostname = punycode.toUnicode(hostname);
-  }
-
-  // search through PSL
-  var prevDomains = [];
-  var curDomain = hostname;
-  var nextDot = curDomain.indexOf('.');
-  var tld = 0;
-   
-  while (true)
-  {
-    var suffix = publicSuffixes[curDomain];
-    if (typeof(suffix) != 'undefined')
-    {
-      tld = suffix;
-        break;
-    }
-     
-    if (nextDot < 0)
-    {
-      tld = 1;
-      break;
-    }
-     
-    prevDomains.push(curDomain.substring(0,nextDot));
-    curDomain = curDomain.substring(nextDot+1);
-    nextDot = curDomain.indexOf('.');
-  }
-   
-  while (tld > 0 && prevDomains.length > 0)
-  {
-    curDomain = prevDomains.pop() + '.' + curDomain;
-    tld--;
-  }
-  
-  return curDomain;
-}
-
-/**
- * Checks whether a request is third party for the given document, uses
- * information from the public suffix list to determine the effective domain
- * name for the document.
- */
-function isThirdParty(/**String*/ requestHost, /**String*/ documentHost)
-{
-  // Remove trailing dots
-  requestHost = requestHost.replace(/\.+$/, "");
-  documentHost = documentHost.replace(/\.+$/, "");
-
-  // Extract domain name - leave IP addresses unchanged, otherwise leave only base domain
-  var documentDomain = getBaseDomain(documentHost);
-  if (requestHost.length > documentDomain.length)
-    return (requestHost.substr(requestHost.length - documentDomain.length - 1) != "." + documentDomain);
-  else
-    return (requestHost != documentDomain);
-}
-
-/**
- * Extracts host name from a URL.
- */
-function extractHostFromURL(/**String*/ url)
-{
-  if (url && extractHostFromURL._lastURL == url)
-    return extractHostFromURL._lastDomain;
-
-  var host = new URL(url).hostname;
-  extractHostFromURL._lastURL = url;
-  extractHostFromURL._lastDomain = host;
-  return host;
-}
-
-/**
- * Extracts host name from the URL of the given frame. If the URL don't have host
- * information (like about:blank or data: URLs) it falls back to the parent frame.
- */
-function extractHostFromFrame(frame)
-{
-  var host = extractHostFromURL(frame.url);
-  if (!host)
-  {
-    var parentFrame = frame.parent;
-    if (parentFrame)
-      return extractHostFromFrame(parentFrame);
-  }
-  return host;
-}
-
-/**
- * Strips the fragment from a URL.
- */
-function stripFragmentFromURL(/**String*/ url)
-{
-  return url.replace(/#.*/, "");
-}