Vodlocker Download Functional

vlocker_download_functions.js

//Download URL only accessible from input element named "videourl"
//Exists after flash player has loaded (inb4 haxed through flash)
function getDownloadURL(elem_name){
	var videlems=document.getElementsByName(elem_name);
	if(videlems.length>0){return videlems[0].getAttribute("value");
	}else{return null;}
}
//The file title is accessible either from the element id "file_title" or the document title
function getVideoNameFromID(elem_id){
	var titelem=document.getElementById(elem_id);
	return titelem==null?null:titelem.innerText.replace("Background Audio?","").replace("Close X","").trim();
}
function getVideoNameFromTitle(title_string){
	var tit=title_string==null?document.title:title_string;
	//The vodlocker title usually has "Watch x" at the start of the title
	return tit.indexOf("Watch ")==0?tit.substring(6):tit;
}
function getVideoName(){
	var name=getVideoNameFromID("file_title");
	console.log(name);
	if(name==null){name=getVideoNameFromTitle(document.title);}
	console.log(name);
	if(name==null){name="v.mp4";}
	console.log(name);
	return name;
}
//The name of the download depends upon the last part of the url (default is v.mp4)
//Checks if .mp4 exists within the string (doesn't check if at end however)
function setDownloadName(download_url,orig_name,name,extension){return download_url.replace(orig_name,(name.indexOf(extension)>0?name:name+extension));}
function createDownloadLink(link_url){
		var download_a=document.createElement("a");
		download_a.setAttribute("href",link_url);
		download_a.setAttribute("target","_blank");
		return download_a;
}
function downloadCurrentFile(download_name){
	var durl=getDownloadURL("videourl");
	if(durl==null){
		alert("Video download URL does not exist on page");
	}else{
		var dname=(download_name==null)?getVideoName():download_name;
		console.log(dname);
		var dlink=setDownloadName(durl,"v.mp4",dname,".mp4");
		var da=createDownloadLink(dlink);
		da.click();
	}
}
downloadCurrentFile();