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LinkChecker.js
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// LinkChecker for AutoBot
var system = require('system');
var URL = "";
var arrLinks = [{link:'/',text:'__root__',parent:'__init__'}];
var visitedLinks = [];
var maxLinks = 100; // maximum number of links to be checked, exits after that
var skipExternal = false; // skip external links while checking, useful to test your website offline (or locally)
var followall = false; // follow all links, will make you crawl outside your website
var debug = true; // prints a list of all urls checked
var verbose = false; // prints detailed arrays showing visited links and queued links
if (system.args.length === 1) {
console.log('Pass the URL of the website as argument to this script!');
phantom.exit();
} else {
URL = system.args[1];
if (typeof String.prototype.endsWith !== 'function' ) {
String.prototype.endsWith = function( str ) {
return this.substring( this.length - str.length, this.length ) === str;
};
}
if(URL.endsWith(".html")) { //todo : replace with a regex later
arrLinks = [{link:'',text:'__root__',parent:'__'}];
}
if(system.args.length > 2) {
maxLinks = system.args[2];
}
}
console.log('Starting testing with URL ' + URL + ' ...');
function getParent(url,arrLinks) {
var parent="";
if(verbose) {
console.log(JSON.stringify(arrLinks));
}
for(var i = 0 ; i<arrLinks.length ; i++) {
if(((URL+arrLinks[i].link) === url) ||
((arrLinks[i].link.lastIndexOf("http://") === 0 ||
arrLinks[i].link.lastIndexOf("https://") === 0) && arrLinks[i].link === url)) {
parent = arrLinks[i].parent;
break;
}
}
return parent;
}
function startChecking(url,callback,arrLinks,visitedLinks,follow) {
var page = require('webpage').create();
//console.log('Testing URL ' + url + ' ...')
page.onError = function(msg, trace) {
if(debug && verbose) {
var msgStack = ['ERROR: ' + msg];
if (trace && trace.length) {
msgStack.push('TRACE:');
trace.forEach(function(t) {
msgStack.push(' -> ' + t.file + ': ' + t.line + (t.function ? ' (in function "' + t.function + '")' : ''));
});
}
console.error(msgStack.join('\n'));
}
};
page.onResourceReceived = function(response) {
// check for a resource only once, since it may be split in response
if(response.stage === "start") {
if(follow || url === response.url) {
if(response.status >= 400 && response.status < 500) {
var parent = getParent(url,arrLinks);
//console.log(response.stage);
console.log('HTTP Client Error # ' + response.status + ' while testing resource ' + response.url
+ ' at URL ' + url + ' with parent URL ' + parent);
}
if(response.status >= 500 && response.status < 600) {
var parent = getParent(url,arrLinks);
console.log('HTTP Server Error # ' + response.status + ' while testing resource ' + response.url
+ ' at URL ' + url + ' with parent URL ' + parent);
}
}
}
};
page.open(url,follow, function(status) {
if(debug) {
console.log('Testing ' + url);
}
if (status !== 'success' && (page.url.indexOf('about:blank') !== 0 && page.url !== "") //added for PhatntomJS 2
&& page.url !== url) {
var parent = getParent(url, arrLinks);
console.log('Unable to open (unexpected redirect) at URL ' + url + ' with parent URL '+ parent
+ ' to URL ' + page.url);
} else {
var pageurl = page.url;
var ua = page.evaluate(function(url,follow,pageurl) {
if(!follow) return [];
var listofanchortags = document.getElementsByTagName('a');
var links = Array.prototype.map.call(listofanchortags,function(link){
return {
link : link.getAttribute('href'),
text : link.textContent,
parent : url
};
});
var filteredlinks = links.filter(function(element){
var flag = true;
if(element.link === null) {
flag = false;
}
else if(element.link === "/" || element.link === "#" /*|| element.link === ""*/) {
flag = false; // filter links to same page
}
else if(//element.link.lastIndexOf("http:") === 0
//|| element.link.lastIndexOf("https:") === 0
element.link.lastIndexOf("mailto:") === 0
|| element.link.lastIndexOf("tel:") === 0
|| element.link.lastIndexOf("javascript:") === 0
|| element.link.lastIndexOf("//") === 0
|| element.link.lastIndexOf("#") === 0
//|| element.link.endsWith(".pdf")
//|| element.link.endsWith(".ppt")
//|| element.link.endsWith(".pptx")
//|| element.link.endsWith(".ps")
) {
flag = false; // filter external links
}
return flag;
});
filteredlinks = Array.prototype.map.call(filteredlinks,function(ele){
if(ele.link.lastIndexOf("..") === 0) {
ele.link = "/"+ele.link;
}
else if (ele.link.indexOf("http://") === 0 ||
ele.link.indexOf("https://") === 0) {
return ele;
}
else if(ele.link.lastIndexOf("http://") !== 0 &&
ele.link.lastIndexOf("https://") !== 0) { //&&
//ele.link.indexOf("/") !== 0){
if(ele.text.trim() !== "" && ele.link === "") {
ele.text = "__missing__link__"+ele.text.trim();
ele.link = "__missing__link__";
return ele;
}
var r = /:\/\/(.[^/]+)/;
var startwith = "";
if(pageurl.lastIndexOf("https://") === 0) {
startwith = 'https://';
}
else {
startwith = 'http://';
}
if(ele.link.indexOf("/") === 0) {
ele.link = startwith + pageurl.match(r)[1] + '/' + ele.link.substring(1);
}
else if(ele.link.lastIndexOf("?") === 0 && pageurl.lastIndexOf("?") === -1) {
ele.link = pageurl + ele.link;
}
else if(ele.link === "") {
// empty link href
}
else {
//ele.link = startwith + pageurl.match(r)[1] + '/' + ele.link;
ele.link = pageurl.substring(0,pageurl.lastIndexOf("/")+1) + ele.link;
}
}
return ele;
});
return filteredlinks;
},url,follow,pageurl);
if(verbose && debug) {
console.log(JSON.stringify(ua));
}
if (visitedLinks.indexOf(url) === -1) {
visitedLinks.push(url);
}
ua = ua.filter(function(ele) {return arrLinks.indexOf(ele.link) === -1;});
//console.log(JSON.stringify(ua));
arrLinks = arrLinks.concat(ua);
//console.log(JSON.stringify(arrLinks));
arrLinks = arrLinks.filter(function(ele) {
return visitedLinks.indexOf(URL+ele.link) === -1
&& visitedLinks.indexOf(ele.link) === -1;
});
//console.log(JSON.stringify(arrLinks));
}
page.close();
arrLinks.splice(0,1);
callback(arrLinks,visitedLinks);
});
}
function process(arrLinks, visitedLinks) {
if(verbose && !debug) {
console.log('Visited - '+visitedLinks);
var workList = Array.prototype.map.call(arrLinks,function(ele){return ele.link;});
console.log('In queqe - '+ workList);
}
var url = "";
var follow = true;
var r = /:\/\/(.[^/]+)/;
if(arrLinks.length > 0 && maxLinks > 0) {
if(arrLinks[0].link.indexOf("http://") === 0 ||
arrLinks[0].link.indexOf("https://") === 0){
url = arrLinks[0].link;
var domainOfLink = arrLinks[0].link.match(r)[1];
var domainOfURL = URL.match(r)[1];
//console.log(domainOfLink);
//console.log(domainOfURL);
if(domainOfLink === domainOfURL || followall) {
follow = true;
}
else {
follow = false;
}
}
else{
url = URL+(arrLinks[0].link);
}
//console.log(skipExternal);
//console.log(follow);
if(skipExternal && !follow) {
arrLinks.splice(0,1);
if (visitedLinks.indexOf(url) === -1) {
visitedLinks.push(url);
}
process(arrLinks, visitedLinks);
}
else if(arrLinks[0].text.lastIndexOf("__missing__link__") === 0) {
console.log('Missing link found at URL ' + arrLinks[0].parent+ ' with text '
+ arrLinks[0].text.substring(17));
arrLinks.splice(0,1);
process(arrLinks, visitedLinks);
}
else {
maxLinks--;
startChecking(url,process,arrLinks,visitedLinks,follow);
}
}
else {
if(maxLinks > 0) {
console.log('Testing ' + URL + ' completed successfully');
}
else {
console.log('Testing ' + URL + ' terminated as maxLinks bound reached');
}
phantom.exit();
}
}
process(arrLinks,visitedLinks);