gPass/chrome_addon/background.js

/*
  Copyright (C) 2013-2017 Grégory Soutadé
  
  This file is part of gPass.
  
  gPass is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
  
  gPass is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with gPass.  If not, see <http://www.gnu.org/licenses/>.
*/

function url_block_callback(details)
{
    // console.log(JSON.stringify(details));
    if (details.requestBody)
    {
	if (details.requestBody.formData)
	{
	    for (var key in details.requestBody.formData)
	    {
		for(var idx in details.requestBody.formData[key])
		{
		    value = details.requestBody.formData[key][idx];
		    if (value.startsWith("@@") ||
			value.startsWith("@_"))
			return {cancel: true};
		}
	    }
	}

	/*
	// Analyse POST parameters
	if (details.method == "POST" && details.requestBody.raw)
	{
	    alert(details.requestBody.raw);
	    var postedString = decodeURIComponent(String.fromCharCode.apply(null,
                                      new Uint8Array(details.requestBody.raw[0].bytes)));
	    if (postedString.indexOf("=@@") != -1 ||
		postedString.indexOf("=@_") != -1)
		return {cancel: true};
	}
*/
    }

    return {cancel: false};
}

chrome.runtime.onMessage.addListener(
    function(request, sender, sendResponse) {

	if (request.type == "notification")
	{
	    options = {
		type: "basic",
		title : "gPass",
		message : request.options.message,
		iconUrl:chrome.extension.getURL("icons/gpass_icon_64.png")
	    };

	    chrome.notifications.create("gPass", options, function(){});

	    window.setTimeout(function() {chrome.notifications.clear("gPass", function(){})}, 2000);
	}
	else if (request.type == "block_url")
	{
	    chrome.tabs.getCurrent(function cb(tab) {
		if (tab)
		{
		    chrome.webRequest.onBeforeRequest.addListener(
			url_block_callback,
			{urls:[request.options.url],
			 "types":["main_frame"],
			 "tabId":tab.id,
			 "windowId":tab.windowId
			},
			["blocking", "requestBody"]);
		}
		else
		{
		    chrome.webRequest.onBeforeRequest.addListener(
			url_block_callback,
			{urls:[request.options.url], "types":["main_frame"]},
			["blocking", "requestBody"]);
		}
	    });
	}
    });