// ==UserScript==
// @name        Google Images Bypass Content Security Policy
// @description Bypasses the Content Security Policy of websites that are blocking the website preview view on Google Images r###lts. Otherwise you only see the mesage: Blocked by Content Security Policy. This page has a content security policy that prevents it from being loaded in this way. Firefox prevented this page from loading in this way because the page has a content security policy that disallows it.
// @namespace   cuzi
// @oujs:author cuzi
// @version     2
// @license     GPL-3.0
// @include     /^https?:\/\/images\.google\.\w{2,3}\//
// @grant       GM_xmlhttpRequest
// ==/UserScript==
(function() {
function loadFrame(ev) {
removeButton();
var iframe = document.getElementById("il_f");
GM_xmlhttpRequest({
method: "GET",
url: iframe.src,
onload: function(response) {
var charset = "utf-8";
var re = /<meta charset=\"(.*?)\">/;
var m = response.responseText.match(re);
if(m && m[1]) {
charset = m[1];
}
iframe.src = 'data:text/html;charset='+charset+',' + encodeURIComponent(response.responseText);
}
});
}
function addButton(ev) {
button = document.createElement("button");
button.appendChild(document.createTextNode("Bypass Content Security Policy"));
button.setAttribute("style","font-size:150%; color:crimson;");
button.addEventListener("click",loadFrame);
document.getElementById("il_mi").insertBefore(button, document.getElementById("il_mi").firstChild);
}
function removeButton(ev) {
if(button) {
button.parentNode.removeChild(button);
button = null;
}
}
if(document.getElementById("il_f")) {
var iframe = document.getElementById("il_f");
var t0 = window.setTimeout(loadFrame,4000);
var button;
addButton();
iframe.addEventListener("load",function(ev) {
clearInterval(t0);
});
}
})();