SiteAdvisor Clone for Google

By fire_015 — Last update Mar 23, 2007 — Installed 599 times. Daily Installs: 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0 
// ==UserScript==
// @name           SiteAdvisor Clone for Google
// @namespace      http://codr.us/category/Greasemonkey/SiteAdvisor-Clone-for-Google
// @description    This will check all links in your Google search results for safety against siteadvisor.com
// @include        *.google.*/search* 
// ==/UserScript==

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var links = document.getElementsByTagName('a');
for (var i=0; i<links.length; i++) {
    if (links[i].className == 'l') {
        var domain = ExtractDomainName(document.links[i].href.toLowerCase());
        span = document.createElement('span');
        s = span.cloneNode(true);
        s.setAttribute('id', 'checkstatus'+i);
        links[i].parentNode.appendChild(s);
        checkAdvisory(domain, i);
    }
}

// Check the site advisor website
// We use restricted.html because too many queries to /sites/domain blocks your IP
function checkAdvisory(domain, id) {
    GM_xmlhttpRequest({
        method:"GET",
        url:'http://www.siteadvisor.com/restricted.html?domain='+domain+'&suite=false&premium=true',
        onload:function(result) {
        if (result.responseText.indexOf('is rated green') !== -1) {
		document.getElementById('checkstatus'+id).innerHTML = ' <img src="'+img_green+'" title="This site is safe to browse">';
            }
        else if (result.responseText.indexOf('is rated yellow') !== -1) {
                document.getElementById('checkstatus'+id).innerHTML = ' <img src="'+img_yellow+'" title="This site might not be safe to browse">';
            }
        else if (result.responseText.indexOf('is rated red') !== -1) {
                document.getElementById('checkstatus'+id).innerHTML = ' <img src="'+img_red+'" title="This site is not safe to browse">';
            }
        }
    });
}

// Extract domain name
// Code obtained from http://willmaster.com/possibilities/
function ExtractDomainName(s) {
// Feed this function anything that looks like 
//   a domain name or URL. It will do its best 
//   to extract the domain without subdomains.

// For the comments, let's assume that s equals
//   "http://www.books.Example.co.uk:80/page.html"

// Remove http://, if present.
// (Result is "www.books.Example.co.uk:80/page.html")
var i = s.indexOf('//');
if(i > -1) { s = s.substr(i+2); }

// Remove path/file information, if present.
// (Result is "www.books.Example.co.uk:80")
i = s.indexOf('/');
if(i > -1) { s = s.substr(0,i); }

// Remove port number, if present.
// (Result is "www.books.Example.co.uk")
i = s.indexOf(':');
if(i > -1) { s = s.substr(0,i); }

// Return s if no letters (could be an IP address).
// (Doesn't apply to the example)
var re = /[a-z]/i;
if(! re.test(s)) { return s; }

// Split s into chunks on periods, store in array a.
// (Result is 
//          "www"
//          "books"
//          "Example"
//          "co"
//          "uk"
//    (5 chunks) )
var a = s.split('.');

// If less than 2 chunks, it's not really a domain name.
//   Just return s and be done with it.
// (Doesn't apply to the example)
if(a.length < 2) { return s; }

// Create domain name with last 2 chunks of array a.
// (Result is "co.uk")
var domain = a[a.length-2] + '.' + a[a.length-1];

// If more than 2 chunks ...
// (Yes, the example has 5 chunks)
if(a.length > 2) {
   // ... and if the last two chunks are each exactly 
   //   2 characters long, it's probably a domain with 
   //   the format Example.co.uk. Therefore, insert the 
   //   third from last chunk of array a into the front 
   //   of the domain name.
   // (The example "co.uk" matches those criteria where, if  
   //   "example.com" had been the domain, it would not.)
   // (Result is "Example.co.uk")
   if(a[a.length-2].length==2 && a[a.length-1].length==2) {
      domain = a[a.length-3] + '.' + domain;
      }
   }

// Lowercase the domain name and return it.
// (Result is "example.co.uk")
return domain.toLowerCase();
}