Content script comunicating with html page

20-08-2016, 09:53 PM

I need my content script to run with privileges.

For my script to perform a privileged action, it needs to send a "message" to my background page,(background.html), so the background pages peforms it for it.

Here is my current content script:

Code:
function checkReq(){
 var list = document.getElementById("gkpluginsExtListReq");
 if(list===null){
 return;
 }
 list.title = "ready";
 if(list.childNodes.length>0){
 var curReq = list.firstChild;
 if(typeof curReq.innerHTML=="undefined"){
 list.removeChild(curReq);
 return;
 }
 var obj = JSON.parse(atob(curReq.innerHTML));
 obj.onload = obj.onerror = obj.onabor = function(response){
 var txtout = document.createElement("textarea");
 txtout.id = obj.extreqid;
 txtout.style.display = "none";
 var Hfres = response.status+" "+response.statusText+"\r\n"+response.responseHeaders;
 if(response.finalUrl){
 Hfres += "FinalLocation: "+response.finalUrl+"\r\n";
 }
 if(obj.returndtaescape){
 txtout.value = escape(Hfres+"\r\n"+response.responseText);
 }else if(obj.returndtab64){
 txtout.value = btoa(Hfres+"\r\n"+response.responseText);
 }else{
 txtout.value = Hfres+"\r\n"+response.responseText;
 }
 document.body.appendChild(txtout);
 };
 GM_xmlhttpRequest(obj);
 list.removeChild(curReq);
 }
 }
 setInterval(checkReq,100);

My background.html page is empty, because i until now, i had no luck to let it "comunicate" with my content script.
I appreciate any help.

P.S: My current project is a extension for google chrome, and the Message Passing page from google chrome developer section didn't really help me out.

Content script comunicating with html page

Submitted by A, 20-08-2016, 09:53 PM, Thread ID: 22817